Skocz do pozycji: 1.

Tytuł:

The Relationship between Impact Sensitivity of Nitroaromatic Energetic Compounds and their Electrostatic Sensitivity

Autorzy:

Zohari, N.
Seyed-Sadjadi, S. A.
Marashi-Manesh, S.

Powiązania:

https://bibliotekanauki.pl/articles/358443.pdf

Data publikacji:

2016

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

energetic materials
nitroaromatic compounds
impact sensitivity
electrostatic sensitivity
safety

Opis:

This study presents a linear relationship between the impact sensitivity of nitroaromatic energetic compounds and their electric spark sensitivity. The methodology assumes that the impact sensitivity of a nitroaromatic energetic compound with the general formula CaHbNcOd can be expressed as a function of the electrostatic sensitivity, the number of NH2 group substitutions in the 2,4,6-trinitrophenyl ring and non-additive structural parameters. The root mean square and absolute standard deviation of a newly introduced correlation were respectively found to be 2.4 and 2.0 for 27 nitroaromatic energetic compounds. The proposed new correlation was also tested for 7 additional nitroaromatic energetic compounds, which have complex molecular structures such as 1-(2,4,6-trinitrophenyl)-5,7-dinitrobenzotriazole and 1,3,7,9-tetranitrophenoxazine.

Źródło:

Central European Journal of Energetic Materials; 2016, 13, 2; 427-443
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Use of nano-diamond in cosmetic microdermabrasion

Autorzy:

Janaszczyk, A.
Brzecka, P.
Chuchracki, M.
Mitura, K.

Powiązania:

https://bibliotekanauki.pl/articles/285882.pdf

Data publikacji:

2017

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów

Tematy:

nanodiamonds
microdermabrasion
sensitivity

Źródło:

Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 87
1429-7248

Pojawia się w:

Engineering of Biomaterials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Adaptive finite elements based on sensitivities fortopological mesh changes

Autorzy:

Friederich, J.
Leugering, G.
Steinmann, P.

Powiązania:

https://bibliotekanauki.pl/articles/205694.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

adaptive mesh refinement
sensitivity-based refinement
topological sensitivity
asymptotic expansion

Opis:

We propose a novel approach to adaptive refinement in FEM based on local sensitivities for node insertion. To this end, we consider refinement as a continuous graph operation, for instance by splitting nodes along edges. Thereby, we introduce the concept of the topological mesh derivative for a given objective function. For its calculation, we rely on the first-order asymptotic expansion of the Galerkin solution of a symmetric linear second-order elliptic PDE. In this work, we apply this concept to the total potential energy, which is related to the approximation error in the energy norm. In fact, our approach yields local sensitivities for minimization of the energy error by refinement. Moreover, we prove that our indicator is equivalent to the classical explicit a posteriori error estimator in a certain sense. Numerical results suggest that our method leads to efficient and competitive adaptive refinement.

Źródło:

Control and Cybernetics; 2014, 43, 2; 279-306
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Sensitivity analysis of deterministic signaling pathways models

Autorzy:

Puszyński, K.
Lachor, P.
Kardyńska, M.
Śmieja, J.

Powiązania:

https://bibliotekanauki.pl/articles/201589.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

signaling pathways
sensitivity analysis

Opis:

The paper is focused on application of sensitivity methods to analysis of signaling pathway models. Two basic methods are compared: local, based on standard sensitivity functions, and global, based on Sobol indices. Firstly, a general outline of modeling of signaling pathways by means of ordinary differential equations is briefly described. Afterwards, the methods of sensitivity analysis, known from literature, are introduced and illustrated with a simple example of a dynamical system of the second order. Subsequently, the analysis of the p53/Mdm2 regulatory module, which is a key element of any pathway involving p53 protein, is presented. The results of this analysis suggest that no single method should be chosen for investigation of any signaling pathway model but several of them should be applied to answer important questions about sources of heterogeneity in cells behavior, robustness of signaling pathways and possible molecular drug targets.

Źródło:

Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 3; 471-479
0239-7528

Pojawia się w:

Bulletin of the Polish Academy of Sciences. Technical Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Sensitivity analysis of planar mechanisms
Badania wrażliwości mechanizmów płaskich

Autorzy:

Romaniak, K.

Powiązania:

https://bibliotekanauki.pl/articles/281664.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

kinematics
planar mechanisms
sensitivity

Opis:

When designing a new mechanism, the designer has to know its kinematic parameters: position, velocity, acceleration, the number of design options, specific positions, motion ranges of particular links, effects of manufacturing tolerances of links and clearances in kinematic pairs on functioning of the mechanism. The latter parameter is associated with sensitivity of the mechanism, understood as its ability to respond to even minimal variations of the driving link position. The source of information about these parameters becomes the objective function obtained through the application of the modification method. This study explores the effects of clearances in kinematic pairs and structure of the mechanism on its sensitivity.
Konstruktor już na etapie projektowania mechanizmu chce wiedzieć, jakie będą jego właściwości kinematyczne. Interesują go położenia, prędkości, przyspieszenia, liczba opcji montażowych, położenia osobliwe, zakresy ruchu poszczególnych ogniw, wpływ tolerancji wykonania ogniw oraz luzów w parach kinematycznych na działanie mechanizmu. Ostatnia z wymienionych właściwości łączy się z pojęciem wrażliwości mechanizmu, rozumianej jako jego zdolności do reagowania na najmniejszą zmianę położenia ogniwa napędzającego. Źródłem informacji na temat wszystkich wymienionych właściwości jest funkcja celu otrzymana w wyniku stosowania metody modyfikacji. W niniejszym opracowaniu przedstawiono wpływ luzów w parach kinematycznych i struktury mechanizmu na jego wrażliwość.

Źródło:

Journal of Theoretical and Applied Mechanics; 2009, 47, 2; 473-482
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Sensory processing sensitivity and its relation to susceptibility to misinformation

Autorzy:

Sadowski, Szymon Kamil
Szpitalak, Malwina

Powiązania:

https://bibliotekanauki.pl/articles/2121400.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

high sensitivity
sensory processing sensitivity
personality trait
misinformation effect
suggestibility
eyewitness testimony

Opis:

Sensory processing sensitivity is a relatively new theoretical construct. Its main components include deeper processing of stimuli as well as a stronger response to environmental impacts, both positive and negative. The effect of misinformation, which involves the inclusion of misinformation in the witness's memory reports, can be modified by varied factors, including personality characteristics. To the knowledge of the authors, no such research has been conducted so far and thereby the aim of the following study was to examine the relationship between the sensory processing sensitivity and susceptibility to the misinformation effect. Group studies were carried out according to the three-stage scheme of investigating the misinformation effect. After the original material was presented, the participants were exposed to a post-event material, containing the misinformation in the experimental group. Then the memory of the original material was tested. A strong misinformation effect was shown. Highly sensitive people, achieving the highest results in the Highly Sensitive Person Scale, were more resistant to the misinformation effect.

Źródło:

Polish Psychological Bulletin; 2022, 53, 2; 79-87
0079-2993

Pojawia się w:

Polish Psychological Bulletin

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

The Safe Control Sensitivity Functions in Matrix Game of Ships

Autorzy:

Lisowski, J.

Powiązania:

https://bibliotekanauki.pl/articles/116375.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Morski w Gdyni. Wydział Nawigacyjny

Tematy:

matrix game
matrix game of ships
sensitivity
safe control
sensitivity functions
safe control sensitivity functions
ship control algorithm
Safety at Sea

Opis:

The paper describes the use of matrix game theory for the synthesis of safe control of a ship in collision situations. An analysis of the sensitivity of the ship control algorithm to the inaccuracy of process state information and changes in its parameters was presented. Sensitivity characteristics were compared on the example of the navigational situation in the Kattegat Strait for good and restricted visibility at sea.

Źródło:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 3; 527-532
2083-6473
2083-6481

Pojawia się w:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

A new OSS design based on parameter sensitivity to changes in measurements

Autorzy:

Kalicka, R.
Bochen, D.

Powiązania:

https://bibliotekanauki.pl/articles/969953.pdf

Data publikacji:

2006

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

optimal sampling schedule
sensitivity criterion

Opis:

As a result of the severe practical and ethical constraints imposed on medical measurements, the parameter estimation procedure designed for diagnosis and therapy is often a difficult problem. When blood sampling provides the data, the number of samples and the observation interval should be minimized. Designing an experiment for parameter estimation requires a step known as quantitative experiment design, usually preceded by a step called qualitative experiment design. The latter answers if a model is identifiable under particular experimental conditions. The former is suitable for the purpose of obtaining the maximum information from the data to be collected. An experiment design is based on the optimization of a suitable criterion formulated with respect to the analyzed variables of the experiment (input shape, sampling schedule). This paper considers sampling schedule design. New criteria for new optimal sampling schedules (OSS) have been formulated on the basis of sensitivity function. These are referred to as S-OSS and RS-OSS designs. The results of optimization for both criteria are compared with the result obtained with a reputable established D-optimal design based on the Fisher information matrix. By showing the results of S-OSS and RS-OSS design we can present the reliability and efficiency of the new criteria in comparison to D-OSS design. Illustrative examples are presented.

Źródło:

Control and Cybernetics; 2006, 35, 2; 385-406
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Economic analysis of implementing VMI model using game theory

Autorzy:

Stehel, Vojtěch
Vochozka, Marek
Kliestik, Tomas
Bakes, Vladimir

Powiązania:

https://bibliotekanauki.pl/articles/19090921.pdf

Data publikacji:

2019

Wydawca:

Instytut Badań Gospodarczych

Tematy:

VMI
game theory
sensitivity analysis

Opis:

Research background: The article deals with implementing VMI between the supplier and customer. To assess whether the system will be implemented, the evolution game theory is used. The contribution is based on the limitations of the study of the evolutionary game theory approach to modelling VMI policies (Torres et al., 2014) and its later extension, The evolutionary game theory approach to modelling VMI policies (Torres & García-Díaz, 2018). It aims is to complement the studies and provide a comprehensive picture of the issue. Purpose of the article: The main objective of the contribution is to respond to the question whether the VMI system will be introduced between the supplier and customer. Methods: In the first phase, the matrix is analysed from the point of view of the game meaning and its limit parameters. The limit parameters are set taking into account the economic reality. The only examined states of the matrix are those where the result is not obvious. For the purposes of the contribution, we work with a 5-year period. A new software capable of calculating evolutionary focus and their stability is created. Sensitivity analysis is carried out for the individual parameters that affect the system behaviour. Findings & Value added: Value added is a complex description of the system and complementation of previous studies in this field. VMI is confirmed. The results obtained can be used for practical management, so that the managers are able to identify what the actual costs are and what the probability of introducing the system is. At the same time, they can identify the parameters that can be influenced by them and observe their impact on the shift of the system introduction probability.

Źródło:

Oeconomia Copernicana; 2019, 10, 2; 253-272
2083-1277

Pojawia się w:

Oeconomia Copernicana

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Relationships between Anxiety Sensitivity of Academics and Some Variables such as Gender, Age and Personality

Autorzy:

Yazici, Hikmet

Powiązania:

https://bibliotekanauki.pl/articles/16530191.pdf

Data publikacji:

2013-12-31

Wydawca:

Wydawnictwo Adam Marszałek

Tematy:

anxiety sensitivity
gender
age
personality

Opis:

Anxiety sensitivity (AS) has been defined as the fear of symptoms of anxiety. AS is connected with psychological and demographic variables. The author of this study sought to examine the relationships among academic staffs’ gender, age and AS with a sample of 355 practicing academic staff (female=133, male=222). Results showed that female academic staff have greater AS than their male colleagues. Results also revealed statistically significant relationships between age, moving away from social activities and AS. Implications for research and practice are discussed.

Źródło:

The New Educational Review; 2013, 34; 19-29
1732-6729

Pojawia się w:

The New Educational Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Measurement of pressure sensitivity of modal birefringence of birefringent optical fibers using a Sagnac interferometer

Autorzy:

Kaczmarek, C
Wójcik, W

Powiązania:

https://bibliotekanauki.pl/articles/174434.pdf

Data publikacji:

2015

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

birefringent fiber
birefringence
pressure sensitivity

Opis:

The paper presents a method of measuring the sensitivity of modal birefringence to pressure in birefringent optical fibers, based on a Sagnac interferometer with a birefringent fiber. In this method, the pressure sensitivity of modal birefringence of the optical fiber is determined on the basis of the measurement of the pressure sensitivity of the Sagnac interferometer including the fiber being measured, and the measurement of the group modal birefringence of that fiber, which is also performed by using the Sagnac interferometer. Utilizing the above method, measurements were performed of the pressure sensitivity of modal birefringence of birefringent optical fibers: a photonic crystal fiber and a bow-tie fiber, in the wavelength range 1460–1600 nm. Presented are the results of these measurements and their comparison with the results obtained by using different methods for the same types of fibers.

Źródło:

Optica Applicata; 2015, 45, 1; 5-14
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

In vitro activity of oxazaphosphorines in childhood acute leukemia: Preliminary report.

Autorzy:

Styczyński, Jan
Wysocki, Mariusz
Dębski, Robert
Balwierz, Walentyna
Rokicka-Milewska, Roma
Matysiak, Michał
Balcerska, Anna
Kowalczyk, Jerzy
Wachowiak, Jacek
Sońta-Jakimczyk, Danuta
Chybicka, Alicja

Powiązania:

https://bibliotekanauki.pl/articles/1043830.pdf

Data publikacji:

2002

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

ALL
leukemia
sensitivity
glufosfamide
resistance

Opis:

Glufosfamide (β-D-glucosyl-ifosfamide mustard) is a new agent for cancer chemotherapy. Its pharmacology is similar to commonly used oxazaphosphorines, but it does not require activation by hepatic cytochrome P-450 and preclinically demonstrates lower nephrotoxicity and myelosuppression than ifosfamide. The aim of the study was a comparison of the drug resistance profiles of glufosfamide and other oxazaphosphorines in childhood acute leukemias. Leukemic cells, taken from children with ALL on diagnosis (n = 41), ALL on relapse (n = 12) and AML on diagnosis (n= 13) were analyzed by means of the MTT assay. The following drugs were tested: glufosfamide (GLU), 4-HOO-ifosfamide (IFO), 4-HOO-cyclophosphamide (CYC) and mafosfamide cyclohexylamine salt (MAF). In the group of initial ALL samples median cytotoxicity values for GLU, IFO, CYC and MAF were 15.5, 33.8, 15.7 and 7.8 μM, respectively. In comparison with initial ALL samples, the relative resistance for GLU and IFO in relapsed ALL samples was 1.9 (p = 0.049) and 1.3 (ns), and in initial AML samples 31 (p < 0.001) and 5 (p = 0.001), respectively. All oxazaphosphorines presented highly significant cross-resistance. Glufosfamide presented high activity against lymphoblasts both on diagnosis and on relapse.

Źródło:

Acta Biochimica Polonica; 2002, 49, 1; 221-225
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

High order sensitivity analysis of a mistuned blisk including intentional mistuning

Autorzy:

Pohle, L.
Tatzko, S.
Panning-von Scheidt, L.
Wallaschek, J.

Powiązania:

https://bibliotekanauki.pl/articles/281842.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

turbine blades
mistuning
sensitivity analysis

Opis:

Small deviations between turbine blades exist due to manufacturing tolerances or material inhomogeneities. This effect is called mistuning and usually causes increased vibration amplitudes and also a lower service life expectancy of bladed disks or so called blisks (bladed integrated disk). The major resulting problem is to estimate the maximum amplitude with respect to these deviations. Due to the probability distribution of these deviations, statistical methods are used to predict the maximum amplitude. State of the art is the Monte-Carlo simulation which is based on a high number of randomly re-arranged input parameters. The aim of this paper is to introduce a useful method to calculate the probability distribution of the maximum amplitude of a mistuned blisk with respect to the random input parameters. First, the applied reduction method is presented to initiate the sensitivity analysis. This reduction method enables the calculation of the frequency response function (FRF) of a Finite Element Model (FEM) in a reasonable calculation time. Based on the Taylor series approximation, the sensitivity of the vibration amplitude depending on normally distributed input parameters is calculated and therewith, it is possible to estimate the maximum amplitude. Calculating only a single frequency response function shows a good agreement with the results of over 1000 Monte-Carlo simulations.

Źródło:

Journal of Theoretical and Applied Mechanics; 2017, 55, 1; 353-368
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Impact Initiation of Compositions Ammonium Perchlorate with Inorganic Components

Autorzy:

Dubovik, A. V.
Kokovikhin, D. V.

Powiązania:

https://bibliotekanauki.pl/articles/357980.pdf

Data publikacji:

2010

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

sensitivity to impact
ammonium perchlorate

Opis:

Experimental data on sensitivity to impact of compositions ultra- and nanodispersed AP with inorganic components are presented. Critical parameters of impact initiation of these compositions lay down on the straight line in co-ordinates (e^cr, P^cr2) characterising balance of energy at the impact.

Źródło:

Central European Journal of Energetic Materials; 2010, 7, 4; 325-334
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

A New Method for Predicting the Friction Sensitivity of Nitramines

Autorzy:

Keshavarz, M. H.
Hayati, M.
Ghariban-Lavasani, S.
Zohari, N.

Powiązania:

https://bibliotekanauki.pl/articles/358230.pdf

Data publikacji:

2015

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

friction sensitivity
nitramine
correlation
safety

Opis:

This study presents a new simple correlation between friction sensitivity of nitramines and their molecular structures. This novel correlation can help chemists and chemical engineers to predict the friction sensitivity of new nitramines without using any experimental data, which is important for safety in industrial processes. The new correlation can also help to elucidate the mechanism of initiation of energetic materials by frictional stimuli. This new method assumes that friction sensitivity of a nitramine of general formula CaHbNcOd can be expressed as a function of the optimized elemental composition and the contributions of specific molecular structural parameters. The new correlation has root mean square and average deviations of 7.64 and 6.44 J, respectively, for 20 nitramines with different molecular structures. The proposed new method was also tested for 11 nitramines containing complex molecular structures.

Źródło:

Central European Journal of Energetic Materials; 2015, 12, 2; 215-227
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Characteristics of Melt Cast Compositions Based on cis-1,3,4,6-Tetranitrooctahydroimidazo-[4,5 d] imidazole (BCHMX)/TNT

Autorzy:

Elbeih, A.
Zeman, S.

Powiązania:

https://bibliotekanauki.pl/articles/358268.pdf

Data publikacji:

2014

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

nitramines
BCHMX
sensitivity
detonation
brisance

Opis:

cis-1,3,4,6-Tetranitrooctahydroimidazo-[4,5 d]imidazole (BCHMX) is a new bicyclic nitramine which has been prepared using a two-stage synthetic method. In this work, a new melt cast composition based on BCHMX/TNT (60/40 by wt.) was prepared. For comparison purposes, Composition B based on RDX (1,3,5-trinitro1,3,5-triazacyclohexane)/TNT (60/40 by wt.), and HMX (1,3,5,7-tetranitro-1,3,5,7tetraazacyclooctane)/TNT (60/40 by wt.) were also studied. Impact and friction sensitivities of these compositions and of the individual explosives were determined. The detonation velocities were measured experimentally. The performance of the compositions prepared was studied by measuring the brisance using the Kast method. The detonation parameters of the compositions and the individual explosives were calculated using the EXPLO5 thermodynamic code. The results show that mixing these nitramines with TNT decreases their sensitivities. BCHMX/TNT is more sensitive to impact and friction than Composition B while it has higher detonation parameters, at the same level as HMX/TNT. In comparison, BCHMX/TNT has the highest relative brisance of the compositions studied. It is postulated that the higher performance characteristics of BCHMX and compositions based on it, in comparison with those of HMX, are due to a higher positive heat of formation for this nitramine.

Źródło:

Central European Journal of Energetic Materials; 2014, 11, 4; 501-513
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Insensitive HMX (Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine) Nanocrystals Fabricated by High-Yield, Low-Cost Mechanical Milling

Autorzy:

Wang, Y.
Jiang, W.
Song, X.
Deng, G.
Li, F.

Powiązania:

https://bibliotekanauki.pl/articles/358912.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

nanoexplosives
HMX
thermal decomposition
sensitivity

Opis:

A mechanical approach had been adopted for fabricating HMX nanoparticles. This fabrication method avoided the recrystallization process and was different from the traditional methods employed to prepare nanoexplosives. In particular, the high yield and low cost increased the possibility of its industrial application. Specifcally, HMX particles, that had a mean size of 0.27 μm, were prepared by mechanical milling; a signifcant proportion of nano-HMX (<100 nm) were present and these were observed by TEM and SEM images. The thermal decomposition of HMX samples before and after pulverization was investigated by TG/DSC analysis. The results indicated that there was no obvious difference between the thermographs of raw and pulverized HMX. The HMX samples were investigated by friction, impact, and shock sensitivity tests. High safety was confrmed since pulverized HMX was far more insensitive than raw HMX; indeed the shock sensitivity of pulverized HMX was about 60 percent lower than that of raw HMX.

Źródło:

Central European Journal of Energetic Materials; 2013, 10, 2; 277-287
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Ethical sensitivity, job satisfaction and related factors of the nurses working in different areas

Autorzy:

Tural Buyuk, E.
Rizaral, S.
Güdek, E.

Powiązania:

https://bibliotekanauki.pl/articles/1916723.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Medyczny w Białymstoku

Tematy:

Nursing
Job Satisfaction
Ethical Sensitivity

Opis:

Introduction: Defined as the ability to recognize an ethical problem, ethical sensitivity is closely related to nurses' professional experience and job satisfaction.Purpose: To determine the ethical sensitivity, job satisfaction and related factors of nurses working in different areas.Materials and methods: This research was a descriptive study. Participants were 160 nurses working at Samsun Ondokuz Mayıs University, Health Application and Research Center in Samsun, Turkey. The permission of institution and Medical Research Ethics Committee approval were obtained. After getting permission from the top management of hospitals, information about the study was given to nurses. Those willing to participate were informed that participation was voluntary and invited to give written consent before data collection. For data collection purposes, the researchers used Personal Information Form, Ethical Sensitivity Questionnaire, and Minnesota Satisfaction Questionnaire.Results: In our study 70.6% of the nurses stated that they chose the profession willingly, 48.8% had 1-5 years of professional experience, and 45% stated that they had ethical problems in their professional life. Total score of nurses in the ethical sensitivity and job satisfaction scales was found to be at moderate level. Job satisfaction of single nurses that were in the 40 and over age group that performing their duties willingly was found to be statistically significantly higher than other groups (p <0.05).Conclusion: There was no relationship between nurses' total score averages of job satisfaction and total score averages of ethical sensitivity

Źródło:

Progress in Health Sciences; 2015, 5, 1; 138-149
2083-1617

Pojawia się w:

Progress in Health Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Sources of uncertainty for the Determination of Chlorpyrifos by Gas Chromatography Equipped with Flame Photometric Detector

Autorzy:

Zalat, O. A.
Elsayed, M. A.
Fayed, M. S.
Abd El Megid, M. K.

Powiązania:

https://bibliotekanauki.pl/articles/411973.pdf

Data publikacji:

2014

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

sensitivity
Minimum detectability
Chlorpyrifos
injection

Opis:

Analysts are increasingly being required to evaluate the uncertainty associated with methods. Estimating the uncertainty of an analytical result is an essential part of quantitative analysis. This paper discusses the sources of uncertainty of chlorpyrifos determination by gas chromatography equipped with flame photometric detector (GC-FPD). The analysis was performed on HP-5 MS, 30 m x 0.32 mm capillary column with a 0.25 μm stationary film thickness using ultra pure nitrogen (99.9999 %) as a carrier gas at 25 psi constant pressure. The method has been optimized. Factors affecting quantization of chlorpyrifos such as injector temperature, carrier gas inlet pressure, air to hydrogen ratios and initial temperature program have been studied to get the best sensitivity, minimum delectability. The liner range of the detector was from 0.15 ng/ml to 1200 ppm, the minimum detection limit was 0.15 ng/ml and the relative standard deviation was 0.839.

Źródło:

International Letters of Chemistry, Physics and Astronomy; 2014, 6; 8-55
2299-3843

Pojawia się w:

International Letters of Chemistry, Physics and Astronomy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

The Highly Sensitive Child as a challenge for education – introduction to the concept

Autorzy:

Baryła-Matejczuk, Monika
Artymiak, Małgorzata
Ferrer-Cascales, Rosario
Betancort, Moises

Powiązania:

https://bibliotekanauki.pl/articles/1386935.pdf

Data publikacji:

2020-03-31

Wydawca:

Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego

Tematy:

highly sensitive child
children’s development environment
early education
environmental sensitivity
sensory processing sensitivity

Opis:

The main aim of this paper is to summarize available findings related to the subject of high sensitivity from both the educational and parenting perspectives. According to the authors of the concept of Sensory Processing Sensitivity (SPS), between 15% and 20% of the population exhibit such traits, therefore one has to say that it is necessary to raise the awareness of this subject amongst parents and teachers. High sensitivity may exhibit itself in many ways, depending on the environmental and other temperamental conditions. Understanding its main characteristics (DOES) will allow one to appreciate the potential of this condition instead of focusing on its deficiencies. Such a perspective opens up possible avenues of supporting the Highly Sensitive Child’s resources by both parents and teachers. A review was carried out to answer a research question by collecting and summarizing theo-retical and empirical evidence that fits pre-specified eligibility criteria. The study selection criteria was to find literature/paper reviews and primary studies published in indexed journals included in various databases and focused on Sensory Processing Sensitivity directly, transdisciplinary and ho-listic approaches were central to the process. In the research strategy, the following databases were consulted: PSYCinfo, Scopus and PubMed. The keywords sensory processing, sensitive, environ-mental sensitivity, education were placed in all electronic databases and set to be found in the titles, abstracts or keywords of the documents. No limits on dates were established. At the preparation stage, articles relevant to the topic were selected and supplemented with publications related to child development and educational context. The search was conducted from December 2018 to July 2019.

Źródło:

Problemy Wczesnej Edukacji; 2020, 48, 1; 51-62
1734-1582
2451-2230

Pojawia się w:

Problemy Wczesnej Edukacji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Measurement of sensitivity of solar blind UV cameras to solar light

Autorzy:

Chrzanowski, Krzysztof
Stafiej, B.

Powiązania:

https://bibliotekanauki.pl/articles/1818213.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich

Tematy:

solar sensitivity
SBUV cameras
solar blind UV cameras
UV cameras sensitivity
corona discharge detection

Opis:

Solar blind UV cameras are not theoretically supposed to be sensitive to solar light. However, there is practically always some sensitivity to solar light. This limited solar sensitivity can sometimes make it impossible to detect the weak emission of a corona target located on the solar background. Therefore, solar sensitivity is one of the crucial performance parameters of solar blind UV cameras. However, despite its importance, the problem of determining solar sensitivity of solar blind UV cameras has not been analysed and solved in the specialized literature, so far. This paper presents the concept (definition, measurement method, test equipment, interpretation of results) of measuring solar sensitivity of solar blind UV cameras.

Źródło:

Opto-Electronics Review; 2021, 29, 2; 45--58
1230-3402

Pojawia się w:

Opto-Electronics Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Measurement of sensitivity of solar blind UV cameras to solar light

Autorzy:

Chrzanowski, Krzysztof
Stafiej, B.

Powiązania:

https://bibliotekanauki.pl/articles/1818215.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich

Tematy:

solar sensitivity
SBUV cameras
solar blind UV cameras
UV cameras sensitivity
corona discharge detection

Opis:

Solar blind UV cameras are not theoretically supposed to be sensitive to solar light. However, there is practically always some sensitivity to solar light. This limited solar sensitivity can sometimes make it impossible to detect the weak emission of a corona target located on the solar background. Therefore, solar sensitivity is one of the crucial performance parameters of solar blind UV cameras. However, despite its importance, the problem of determining solar sensitivity of solar blind UV cameras has not been analysed and solved in the specialized literature, so far. This paper presents the concept (definition, measurement method, test equipment, interpretation of results) of measuring solar sensitivity of solar blind UV cameras.

Źródło:

Opto-Electronics Review; 2021, 29, 2; 45--58
1230-3402

Pojawia się w:

Opto-Electronics Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Measurement of sensitivity of solar blind UV cameras to solar light

Autorzy:

Chrzanowski, Krzysztof
Stafiej, B.

Powiązania:

https://bibliotekanauki.pl/articles/1818218.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich

Tematy:

solar sensitivity
SBUV cameras
solar blind UV cameras
UV cameras sensitivity
corona discharge detection

Opis:

Solar blind UV cameras are not theoretically supposed to be sensitive to solar light. However, there is practically always some sensitivity to solar light. This limited solar sensitivity can sometimes make it impossible to detect the weak emission of a corona target located on the solar background. Therefore, solar sensitivity is one of the crucial performance parameters of solar blind UV cameras. However, despite its importance, the problem of determining solar sensitivity of solar blind UV cameras has not been analysed and solved in the specialized literature, so far. This paper presents the concept (definition, measurement method, test equipment, interpretation of results) of measuring solar sensitivity of solar blind UV cameras.

Źródło:

Opto-Electronics Review; 2021, 29, 2; 45--58
1230-3402

Pojawia się w:

Opto-Electronics Review

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 24.

Tytuł:

Measurement of sensitivity of solar blind UV cameras to solar light

Autorzy:

Chrzanowski, Krzysztof
Stafiej, B. Stafiej

Powiązania:

https://bibliotekanauki.pl/articles/1818220.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich

Tematy:

solar sensitivity
SBUV cameras
solar blind UV cameras
UV cameras sensitivity
corona discharge detection

Opis:

Solar blind UV cameras are not theoretically supposed to be sensitive to solar light. However, there is practically always some sensitivity to solar light. This limited solar sensitivity can sometimes make it impossible to detect the weak emission of a corona target located on the solar background. Therefore, solar sensitivity is one of the crucial performance parameters of solar blind UV cameras. However, despite its importance, the problem of determining solar sensitivity of solar blind UV cameras has not been analysed and solved in the specialized literature, so far. This paper presents the concept (definition, measurement method, test equipment, interpretation of results) of measuring solar sensitivity of solar blind UV cameras.

Źródło:

Opto-Electronics Review; 2021, 29, 2; 45--58
1230-3402

Pojawia się w:

Opto-Electronics Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Attainability analysis in the problem of stochastic equilibria synthesis for nonlinear discrete systems

Autorzy:

Bashkirtseva, I.
Ryashko, L.

Powiązania:

https://bibliotekanauki.pl/articles/330694.pdf

Data publikacji:

2013

Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Tematy:

stochastic sensitivity function
attainability
chaos suppression

Opis:

A nonlinear discrete-time control system forced by stochastic disturbances is considered. We study the problem of synthesis of the regulator which stabilizes an equilibrium of the deterministic system and provides required scattering of random states near this equilibrium for the corresponding stochastic system. Our approach is based on the stochastic sensitivity functions technique. The necessary and important part of the examined control problem is an analysis of attainability. For 2D systems, a detailed investigation of attainability domains is given. A parametrical description of the attainability domains for various types of control inputs in a stochastic Henon model is presented. Application of this technique for suppression of noise-induced chaos is demonstrated.

Źródło:

International Journal of Applied Mathematics and Computer Science; 2013, 23, 1; 5-16
1641-876X
2083-8492

Pojawia się w:

International Journal of Applied Mathematics and Computer Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Sensivity and design of fiber layout in composites

Autorzy:

Dems, K.

Powiązania:

https://bibliotekanauki.pl/articles/279497.pdf

Data publikacji:

2000

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

sensitivity analysis
composites
fiber layout
optimization

Opis:

For a linear structure reiforced with elastic fibers, the first variation of an arbitrary behavioral functional corresponding to variation of shape or orientation of fibers is derived by using the direct approach to sensivity analysis. The relevant optimality conditions for optimal design and identification problems are then derived. Both the static and dynamic loading cases are considered. Some simple examples illustrate the applicability of the presented approach.
Wrażliwość i projektowanie ułożenia włókien w kompozycie. W pracy rozpatrzono pierwszą wariację dowolnego funkcjonału związaną z wariacją kształtu lub orientacji wzmacniających włókien w płaskiej liniowo-sprężystej tarczy. Wrażliwości rozpatrywanego funkcjonału wyznaczono wykorzystując metodę bezpośrednią analizy wrażliwości. Następnie sformułowano typowy problem optymalnego projektowania oraz problem identyfikacyjny i wyznaczono odpowiednie warunki optymalności. Rozpatrzono zarówno przypadek obciążeń statycznych, jak i dynamicznych.

Źródło:

Journal of Theoretical and Applied Mechanics; 2000, 38, 4; 807-818
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Elasto-plastic limit loads of cylinder-cone configurations
Sprężysto-plastyczne obciążenia graniczne w układach walcowo-stożkowych

Autorzy:

Dinkler, D.
Knoke, O.

Powiązania:

https://bibliotekanauki.pl/articles/279836.pdf

Data publikacji:

2003

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

stability
buckling
imperfection sensitivity
perturbation
plasticity

Opis:

The paper presents a procedure for computation of the limit loads of imperfection-sensitive shells including plastic deformations. On the basis of strain energy of shells, the worst case scenario for critical perturbations at fixed load levels is investigated. Limit loads of cylindrical and conical shells under combined actions are compared to European design rules. The concept is applied to more general buckling cases of combined shell structures.
W pracy przedstawiono metodę wyznaczania obciążeń granicznych dla powłok wrażliwych na niedoskonałości, z uwzględnieniem odkształceń plastycznych. Opierajac się na energii odksztalcenia powłok rozważono przypadek najgorszego scenariusza krytycznych perturbacji przy ustalonych poziomach obciążeń. Wartości obciążeń granicznych dla powłók cylindrycznych i stożkowych porównano z przyjętymi w Europie metodami projektowania. Koncepcja została zastosowana do analizy bardziej ogólnych przypadków utraty stateczności konstrukcji powłokowych.

Źródło:

Journal of Theoretical and Applied Mechanics; 2003, 41, 3; 443-457
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Concerning the Shock Sensitivities of Certain Plastic Bonded Explosives Based on Attractive Cyclic Nitramines

Autorzy:

Zeman, S.
Elbeih, A. E.
Hussein, A.
Elshenawy, T.
Pelikán, V.
Yan, Q-L.

Powiązania:

https://bibliotekanauki.pl/articles/358824.pdf

Data publikacji:

2017

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

nitramines
gap test
PBX
sensitivity
performance

Opis:

Plastic bonded explosives (PBXs) based on ε-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (ε-HNIW), 1,3,5-trinitro-1,3,5-triazinane (RDX), β-1,3,5,7-tetranitro-1,3,5,7-tetrazocane (β-HMX) and cis-1,3,4,6-tetranitro-octahydroimidazo-[4,5-d]imidazole (BCHMX) were prepared using a hydroxyl-terminated polybutadiene as a binder (HTPB) and cured with hexamethylene di-isocyanate (HMDI). Recently published data for analogous PBXs with a polyisobutylene binder (i.e. a C4 matrix) are also included. All of these PBXs were tested using the Small Scale Water Gap Test according to STANAG 4490, the results of which are directly proportional to the impact and friction sensitivities of the PBXs studied. Reciprocal ratios between the shock sensitivity of these PBXs and their performance were found using the volume heat of explosion as a variable; a semi-logarithmic analogue, using a representative of the detonation pressure (product ρD2) as a variable, has shown an opposite trend for three of these PBXs. A semi-logarithmic relationship between the shock sensitivity of the PBXs and the impact sensitivity of their pure nitramine fillers has confirmed the higher shock reactivity of the C4 PBXs filled with both technical ε-HNIW and RS-ε-HNIW, while for the HTPB PBXs filled with technical grade ε-HNIW, the shock sensitivity found was as expected. The shape and size of the particles should not be a reason for the increased resistance to shock of HMX-C4.

Źródło:

Central European Journal of Energetic Materials; 2017, 14, 4; 775-787
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Tartrazine Solution as Dosimeter for Gamma Radiation Measurement

Autorzy:

Gobara, M.
Baraka, A.

Powiązania:

https://bibliotekanauki.pl/articles/412328.pdf

Data publikacji:

2014

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

gamma radiation
degradation
sensitivity
tartrazine
dosimeter

Opis:

In this study, Tartrazine aqueous solution was investigated as a simple low-dose dosimeter in the range of 20-500 Gy for the high ionizing radiation, gamma ray. Gradual bleaching of Tartarzine solution was observed with dose by measuring the absorbance of Tartarzine-solutions at specified wavelength, λ_max = 428 nm. Tartrazine concentration (10^–4, 5 ×10^–4 and 10^–3 M) and solution-initial pH value (5, 7 and 9) were considered as factors affecting degree of bleaching. It was found that Tartarzine-solution color was diminished gradually with selected dose range due to breakdown of the azo bond. The rate of bleaching increases with the increase of solution-initial pH. Increase of Tartarzine-concentration causes widening of range to which solution is susceptible. The post-irradiated effect (24 hours) was found to cause more bleaching. The sensitivity of Tartrazine solution is not regular with the Tartarzine-concentration and regular with pH.

Źródło:

International Letters of Chemistry, Physics and Astronomy; 2014, 14, 1; 106-117
2299-3843

Pojawia się w:

International Letters of Chemistry, Physics and Astronomy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Diagnostic accuracy of sonoelastography in different diseases
Wartość diagnostyczna sonoelastografii w różnych jednostkach chorobowych

Autorzy:

Manzoor, Iqra
Bacha, Raham
Gilani, Syed Amir

Powiązania:

https://bibliotekanauki.pl/articles/1033265.pdf

Data publikacji:

2018

Wydawca:

Medical Communications

Tematy:

accuracy
different diseases
sensitivity
sonoelastography
specificity

Opis:

The objective of this study was to evaluate the diagnostic accuracy of sonoelastography in patients of primary and secondary health care settings. Google scholar, PubMed, Medline, Medscape, Wikipedia and NCBI were searched in October 2017 for all original studies and review articles to identify the relevant material. Two reviewers independently selected articles for evaluation of the diagnostic accuracy of sonoelastography in different diseases based on titles and abstracts retrieved by the literature search. The accuracy of sonoelastography in different diseases was used as the index text, while B-mode sonography, micro pure imaging, surgery and histological findings were used as reference texts. Superficial lymph nodes, neck nodules, malignancy in thyroid nodules, benign and malignant cervical lymph nodes, thyroid nodules, prostate carcinoma, benign and malignant breast abnormalities, liver diseases, parotid and salivary gland masses, pancreatic masses, musculoskeletal diseases and renal disorders were target conditions. The data extracted by the two reviewers concerning selected study characteristics and results were presented in tables and figures. In total, 46 studies were found for breast masses, lymph nodes, prostate carcinoma, liver diseases, salivary and parotid gland diseases, pancreatic masses, musculoskeletal diseases and renal diseases, and the overall sensitivity of sonoelastography in diagnosing all these diseases was 83.14% while specificity was 81.41%. This literature review demonstrates that sonoelastography is characterized by high sensitivity and specificity in diagnosing different disorders of the body.
Celem badania była ocena dokładności diagnostycznej sonoelastografii u chorych leczonych w warunkach placówek podstawowej i specjalistycznej opieki zdrowotnej. W październiku 2017 roku dokonano przeglądu baz danych Google Scholar, PubMed, MEDLINE, Medscape, Wikipedia oraz NCBI w celu pozyskania prac oryginalnych i poglądowych, które stanowiły materiał do badania. Prace wybierało dwóch badaczy niezależnie. Oceniono dokładność sonoelastografii w diagnostyce różnych chorób na podstawie tytułów i streszczeń wyszukanych prac. Główny termin stanowiła „skuteczność sonoelastografii w diagnostyce różnych chorób”, a terminy „ultrasonografia w trybie B-mode”, „obrazowanie MicroPure”, „zabieg operacyjny” i „wynik badania histopatologicznego” stosowano jako terminy referencyjne. Badane patologie dotyczyły: powierzchownych węzłów chłonnych, guzków okolicy szyi, złośliwych guzów tarczycy, łagodnych i złośliwych zmian w węzłach chłonnych szyjnych, guzków tarczycy, raka gruczołu krokowego, łagodnych i złośliwych zmian w piersiach, chorób wątroby, zmian w śliniankach przyusznych i gruczołach ślinowych, zmian w trzustce, chorób układu mięśniowo-szkieletowego oraz chorób nerek. Pozyskane przez dwóch badaczy dane dotyczące charakterystyki ocenianych prac oraz wyniki analizy przedstawiają tabele i ryciny. W sumie wyszukano 46 badań dotyczących zmian w piersiach, węzłów chłonnych, raka gruczołu krokowego, chorób wątroby, chorób gruczołów ślinowych i ślinianek przyusznych, zmian w trzustce, chorób układu mięśniowo-szkieletowego i chorób nerek, a ogólna czułość i swoistość sonoelastografii w diagnostyce tych chorób wynosiły odpowiednio 83,14% i 81,41%. Niniejszy przegląd literatury wskazuje na wysoką czułość i swoistość sonoelastografii w diagnostyce różnych chorób. Artykuł w wersji polskojęzycznej jest dostępny na stronie http://jultrason.pl/index.php/issues/volume-18-no-72

Źródło:

Journal of Ultrasonography; 2018, 18, 72; 29-36
2451-070X

Pojawia się w:

Journal of Ultrasonography

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Ego Depletion Sensitivity as the Mediator Between Avoidance Temperaments and Subjective Vitality

Autorzy:

Adil, Adnan
Kanwal, Asmara
Yasin, Ghulam
Ameer, Sadaf

Powiązania:

https://bibliotekanauki.pl/articles/2129975.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Ego depletion sensitivity
temperament
subjective vitality

Opis:

The present study examined the mediating role of ego depletion sensitivity between temperaments and subjective vitality. The sample of the present research consisted of 210 undergraduate students of the University of Sargodha. Temperament, ego depletion sensitivity, and subjective vitality were operationalized through Approach-Avoidance Temperament Questionnaire (Elliot & Thrash, 2010), Depletion Sensitivity Scale (Salmon et al., 2014), and Subjective Vitality Scale (Ryan & Frederick, 1997), respectively. Correlation analysis depicted that ego depletion sensitivity was positively correlated with avoidance temperament and negatively correlated with subjective vitality. Furthermore, ego depletion sensitivity mediated between avoidance temperament and subjective vitality. Implications of the study along with its limitations and suggestions were discussed.

Źródło:

Polish Psychological Bulletin; 2021, 52, 2; 188-196
0079-2993

Pojawia się w:

Polish Psychological Bulletin

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Literatura macedońska dla dzieci (rekonesans badawczy)
Macedonian Children’s Literature (Preliminary Thoughts)

Autorzy:

Mojsowa‑Czepiszewska, Wesna

Powiązania:

https://bibliotekanauki.pl/articles/784467.pdf

Data publikacji:

2019

Wydawca:

Wydawnictwo Uniwersytetu Śląskiego

Tematy:

Macedonian literature for children
sensitivity
maturation

Opis:

This short study embraces both the first sprouts of the written Macedonian literature for children (somewhere around the second part of the 19th century), and the literary production which happens after the establishment of the contemporary Macedonian language, that is, after the 1945. Still, the main accent is on two newer books: Verses also Grow (И строфите растат) by Alexandar Kujundziski and Jump and Skip (Скокни прескокни) by Vasil Mukaetov which is a part of the refreshed reading list as an optional book for the Macedonian language lessons in the primary schools in Macedonia. Both authors put an emphasis exactly on a child’s sensitivity and such issues as character growth and maturation. In their books, they transfer the reader from childhood to adulthood unnoticeably and lightly. Their message is to help the little human in the complex process of his or her own comprehension and to show him or her that he or she are not alone in this process.

Źródło:

Paidia i Literatura; 2019, 1; 101-115
2719-4167

Pojawia się w:

Paidia i Literatura

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Македонската литература за деца (мала студија за запознавање)
Macedonian Children’s Literature (Preliminary Thoughts)

Autorzy:

Мојсова‑Чепишевска, Весна

Powiązania:

https://bibliotekanauki.pl/articles/942572.pdf

Data publikacji:

2019

Wydawca:

Wydawnictwo Uniwersytetu Śląskiego

Tematy:

Macedonian literature for children
sensitivity
maturation

Opis:

This short study embraces both the first sprouts of the written Macedonian literature for children (somewhere around the second part of the 19th century), and the literary production which happens after the establishment of the contemporary Macedonian language, that is, after the 1945. Still, the main accent is on two newer books: Verses also Grow (И строфите растат) by Alexandar Kujundziski and Jump and Skip (Скокни прескокни) by Vasil Mukaetov which is a part of the refreshed reading list as an optional book for the Macedonian language lessons in the primary schools in Macedonia. Both authors put an emphasis exactly on a child’s sensitivity and such issues as character growth and maturation. In their books, they transfer the reader from childhood to adulthood unnoticeably and lightly. Their message is to help the little human in the complex process of his or her own comprehension and to show him or her that he or she are not alone in this process.

Źródło:

Paidia i Literatura; 2019, 1; 83-99
2719-4167

Pojawia się w:

Paidia i Literatura

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

A statistical criterion to establish normal ranges for age in a contrast sensitivity function test

Autorzy:

Santillán, J E
Issolio, L A
Colombo, E M

Powiązania:

https://bibliotekanauki.pl/articles/173959.pdf

Data publikacji:

2014

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

contrast sensitivity
ophthalmological clinic
normality references

Opis:

In a previous work (Opt. Appl. 39(2), 2009, pp. 415–428) we established the characteristics that a computer-based contrast sensitivity function (CSF) measurement system has to be used in the opthalmological clinic. In order to obtain a generalized use of CSF in clinics and as a screening tool, the necessity to incorporate a normality range by age was also suggested. It will also be important to establish how many reference curves are necessary, because in the last decades, different ranges have been presented in the literature. In the present work, our purpose was to show how to distribute the observers in terms of the statistical variations of CSF as a function of age in a normal population of healthy eyes. We then evaluated the utility of these curves in the detection of vision problems and, finally, the possibility of using them as a screening tool considering a reduced number of spatial frequencies. We used a computer-based CSF measurement system to present sinusoidal gratings whose values range from 1 to 24 cycles per degree. Three different groups (control, clinical and non-clinical) of subjects were considered. From the statistical analysis we obtained two ranges of normality, based on significant differences that appear around the age of 50. As we were interested in evaluating if this separation could increase the sensitivity of the test, we also performed a series of measurements in a clinical environment. As an interesting possibility of usage of a vision test is screening, we also measured people in conditions relatively different to those found in laboratories or clinics. We observed that this division into two ranges allows a better discrimination, especially for young adults. Measurements show an improvement of 22% in the detection of vision anomalies.

Źródło:

Optica Applicata; 2014, 44, 2; 213-225
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Sensitivity enhancement of metamaterial-based surface plasmon resonance biosensor for near infrared

Autorzy:

Pal, S.
Prajapati, Y. K.
Saini, J. P.
Singh, V.

Powiązania:

https://bibliotekanauki.pl/articles/173477.pdf

Data publikacji:

2016

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

metamaterials
sensor sensitivity
reflectance
evanescent field

Opis:

The present study investigates the angular response and sensitivity of a surface plasmon resonance biosensor with metamaterial, by taking the advantage of the remarkable property of metamaterials. The proposed biosensor numerically shows that silver with a metamaterial layer enhances the sensitivity. The thickness of metamaterial and silver layer has been optimized. On comparing these results with a conventional surface plasmon resonance biosensor, it is observed that the sensitivity of the proposed biosensor is improved by introducing the metamaterial. The proposed biosensor has a sensitivity 6.3124 times higher than that of the conventional surface plasmon resonance sensor.

Źródło:

Optica Applicata; 2016, 46, 1; 131-143
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

A remark on sensitivity in linear programming and Gale-Samuelson nonsubstitution theorem

Autorzy:

De Giuli, M. E.
Giorgi, G.

Powiązania:

https://bibliotekanauki.pl/articles/969906.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

linear programming
sensitivity analysis
nonsubstitution theorem

Opis:

The main purpose of this paper is to show that David Gale's result (1960, Lemma 9.3 on sensitivity in linear programming) is not generally valid. In this lemma, additional assumptions, that are instead required, are not made. We give some correct versions of the above mentioned lemma, and with these an elementary proof of the Gale-Samuelson nonsubstitution theorem.

Źródło:

Control and Cybernetics; 2010, 39, 3; 827-838
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Reliability study of a containment shell
Analiza niezawodności osłony budynku reaktora

Autorzy:

Postek, E.
Siemaszko, A.
Kleiber, M.

Powiązania:

https://bibliotekanauki.pl/articles/281404.pdf

Data publikacji:

2002

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

nuclear engineering
reliability
design sensitivity
FEM

Opis:

Computational time needed for reliability analysis of realistic structural problems as a rule is very high. Improvements in efficiency are critical to allow solution of large realistic problems. The reliability analysis is usually performed using approximate First Order Reliability Method (FORM). Iterative solution procedures of FORM require extensive design sensitivity computations of high accuracy. The design of realistic structures requires computer-based numerical procedures, such as finite e,ement analysis. The design sensitivity gradients are not explicitly available in terms of design variables. The most intensive computational task of design sensitivity computation should be carried out by highly efficient and accurate methods such as discrete design sensitivity analysis. This paper describes requirements for design sensitivity information for reliability analysis. The way of coupling reliability computation with discrete AVM and DDM methods of design sensitivity analysis is pointed out. A computational program developed for layered concrete shells allows one to solve large realistic reliability problems. The reliability study of an RC nuclear containment shell is carried out. Reliability studies show which of the parameters have the highest impact on the reliability of the vessel.
Analiza niezawodności dużych konstrukcji wymaga zazwyczaj bardzo długich obliczeń komputerowych. Poprawa efektywności algorytmów jest zazwyczaj warunkiem koniecznym uzyskania rozwiązań dla dużych rzeczywistych problemów. Analizę niezawodności zwykle przeprowadza się stosując przybliżoną metodę analizy niezawodności pierwszego rzędu (FORM). Procedury iteracyjne analizy niezawodności pierwszego rzędu (FORM) wymagają obliczenia gradientów wrażliwości o wysokiej dokładności. Projektowanie konstrukcji wymaga stosowania metod numerycznych takich jak metoda elementów skończonych. Gradienty wrażliwości nie są jawnie zależne od zmiennych projektowych. Obliczenia gradientów wrażliwości powinno być realizowane przy zastosowaniu efektywnych, dyskretnych metod analizy wrażliwości. W artykule przedstawiono sposób połączenia analizy niezawodności z dyskretnymi metodami obliczania gradientów wrażliwości - zmiennej sprzężonej (AVM) i różniczkowania bezpośredniego (DDM). Rozwinięty program komputerowy dla żelbetowych powłok warstwowych pozwala na rozwiązywanie dużych zadań niezawodnościowych. Przedstawiona została analiza niezawodności żelbetowego budynku bezpieczeństwa reaktora nuklearnego. Analiza niezawodności pozwala na stwierdzenie, który z parametrów projektowych ma największy wpływ na niezawodność osłony.

Źródło:

Journal of Theoretical and Applied Mechanics; 2002, 40, 1; 179-203
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Probit Analysis - a Promising Tool for Evaluation of Explosives Sensitivity

Autorzy:

Šelešovský, J.
Pachmáň, J.

Powiązania:

https://bibliotekanauki.pl/articles/357996.pdf

Data publikacji:

2010

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

probit analysis
sensitivity
sensitiveness
friction
impact

Opis:

The sensitivity of explosives to various initiating events, in probability of initiation-level of stimulus space, has a shape of sigmoidal curve. In standard sensitivity tests only one point on this curve is sought, most often the 50% initiation probability level. The usual (and most often used) method for its determination is the up-and-down method. The whole sensitivity curve can be obtained by conducting large number of trials at all levels or more effectively by probit analysis. The usage of probit analysis, improvement of the precision of the results and comparison with the results precision of the up-and-down method is demonstrated by the example of determination of sensitivity to friction.

Źródło:

Central European Journal of Energetic Materials; 2010, 7, 3; 269-278
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Effect of Different Polymeric Matrices on the Sensitivity and Performance of Interesting Cyclic Nitramines

Autorzy:

Elbeih, A.
Zeman, S.
Jungova, M.
Akstein, Z.

Powiązania:

https://bibliotekanauki.pl/articles/358359.pdf

Data publikacji:

2012

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

HNIW
BCHMX
RDX
HMX
sensitivity
performance

Opis:

Different polymeric matrices, based on butadiene-styrene rubber, polymethyl-methacrylate and silicone binders, were investigated for their ability to decrease the sensitivity of explosives to different mechanical stimuli. A series of plastic explosives based on four different nitramines, namely RDX (1,3,5-trinitro- 1,3,5-triazacyclohexane), β-HMX (β-1,3,5,7-tetranitro-1,3,5,7-tetrazacyclooctane), BCHMX (bicycloHMX, cis-1,3,4,6-tetranitro-octahydroimidazo-[4,5- d ]imidazole) and ε -HNIW (ε -2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane, ε-CL-20), bonded by the selected polymeric matrices were prepared. Sensitivity to impact of all of the plastic explosives prepared as well as of the pure explosives, was measured using the fall hammer test. Sensitivity to friction was determined using the BAM friction test. The performance was studied using the ballistic mortar test and the results were recorded relative to TNT (trinitrotoluene) as reference. By comparing the results of impact and friction sensitivities, it is obvious that the mechanism of transfer of the friction force to the reaction center of the nitramine molecule should be different from that of impact energy transfer. The silicone binder appeared to be the best polymer for decreasing the sensitivity of explosives. The results of the ballistic mortar proved that the performance of the plastic explosives prepared is affected by the type and weight percentage of the binder in each sample.

Źródło:

Central European Journal of Energetic Materials; 2012, 9, 2; 131-138
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Control system defined by some integral operator

Autorzy:

Majewski, M.

Powiązania:

https://bibliotekanauki.pl/articles/255698.pdf

Data publikacji:

2017

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Volterra equation
implicit function theorem
sensitivity

Opis:

In the paper we consider a nonlinear control system governed by the Volterra integral operator. Using a version of the global implicit function theorem we prove that the control system under consideration is well-posed and robust, i.e. for any admissible control u there exists a uniquely defined trajectory xu which continuously depends on control u and the operator [formula] is continuously differentiable. The novelty of this paper is, among others, the application of the Bielecki norm in the space of solutions which allows us to weaken standard assumptions.

Źródło:

Opuscula Mathematica; 2017, 37, 2; 313-325
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Sensitivity Analysis and Optimization for Selected Supply Chain Management Issues in the Company – Using System Dynamics and Vensim

Autorzy:

Kasperska, Elżbieta
Mateja-Losa, Elwira
Marjasz, Rafał

Powiązania:

https://bibliotekanauki.pl/articles/475034.pdf

Data publikacji:

2013

Wydawca:

Fundacja Upowszechniająca Wiedzę i Naukę Cognitione

Tematy:

System Dynamics
sensitivity analysis
optimization
Vensim

Opis:

The aim of our paper is to present the new results of research work on optimization and simulation for some logistic problems in the company. The System Dynamics (SD) method and the Vensim simulation language are applied in order to solve specific managerial problems described by Forrester in the model of supply chain. The historical model of Customer-Producer-Employment System by Forrester (Forrester, 1961) has not been examined with the sensitivity analysis, from the “automatic” testing perspective. Optimization experiments have not been conducted, either. It is surprising, since the model is old and widely known. The opportunities offered by the Vensim language allow us to perform such analysis. The visualization called “confidence bounds“ is used, to show the behaviour of chosen variables over a period of time. The Monte-Carlo method is applied for sampling a set of numbers from within bounded domains (distribution for each searching parameters is specified). The authors of this paper conducted numerous experiments in this scope. This paper presents their results and offers some conclusions formulated at the end.

Źródło:

Journal of Entrepreneurship, Management and Innovation; 2013, 9, 2; 29-44
2299-7075
2299-7326

Pojawia się w:

Journal of Entrepreneurship, Management and Innovation

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

A pot evaluation of the sensitivity of spring barley [Hordeum vulgare L.] to water stress applied at different growth stages

Autorzy:

Martyniak, L

Powiązania:

https://bibliotekanauki.pl/articles/2041977.pdf

Data publikacji:

2001

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

pot
Polska
barley
drought sensitivity
spring barley
sensitivity
growth stage
Hordeum vulgare
water stress
genetic variation

Źródło:

Journal of Applied Genetics; 2001, 42, 2; 145-151
1234-1983

Pojawia się w:

Journal of Applied Genetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Constructing improvement plan for inputs through dialogue with DM about DEA-Efficiency for DMUs

Autorzy:

Uemura, Y.

Powiązania:

https://bibliotekanauki.pl/articles/206812.pdf

Data publikacji:

1999

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

evaluation efficiency
partial improvement plan
sensitivity analysis

Opis:

Evaluation of efficiency of the DMUs (Decision Making Units) in a company is a very important problem. Thus, the studies of evaluation of efficiency are being actively carried out on the basis of the production functions, for example Cobb-Douglas production function and fuzzy loglinear production function (fuzzy Cobb-Douglas model). Recently, DEA (Data Envelopment Analysis) was applied to evaluation of efficiency, in the sense of benchmarking evaluation. After having evaluated DMUs by DEA, we obtain the improvement plan for every input in the inefficient DMUs. Though we many not be able to decrease inputs at one time according to the DEA plan, it is natural to construct some phased improvement plans for decreasing the inputs. First, we propose to support the construction of some phased improvement plans by the sensitivity analysis for the evaluated efficiency by applicatiion of definite limits to the decrease of inputs. Second, we evaluate this method by applying it to the case of bank data.

Źródło:

Control and Cybernetics; 1999, 28, 1; 133-139
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

The importance of the nuclear and cytoplasmic signalling in the cellular response to ionizing radiation

Autorzy:

Szumiel, I.

Powiązania:

https://bibliotekanauki.pl/articles/146716.pdf

Data publikacji:

2000

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

cellular signalling pathways
ionizing radiation
radiation sensitivity

Opis:

DNA is the universal primary target for ionizing radiation; however, the cellular response is highly diversified not only by differential DNA repair ability. The monitoring system for the ionizing radiation-inflicted DNA damage consists of 3 apparently independently acting enzymes which are activated by DNA breaks: two protein kinases, Atm (ataxia telangiectasia mutated) and DNA-PK (DNA-dependent protein kinase) and a poly(ADP-ribose) polymerase, PARP-1. These 3 enzymes are the source of alarm signals, which affect to various extents DNA repair, progression through the cell cycle and eventually the pathway to cell death. Their functions probably are partly over-lapping. On the side of DNA repair their role consists in recruiting and/or activating the repair enzymes, as well as preventing illegitimate recombination of the damaged sites. A large part of the nuclear signalling pathway, including the integrating role of Tp53 has been revealed. Two main signalling pathways start at the plasma membrane: the MAPK/ERK (mitogen and extracellular signal regulated protein kinase family) "survival pathway" and the SAPK/JNK (stress-activated protein kinase/c-Jun N-terminal kinase) "cell death pathway". The balance between them is likely to determine the cell’s fate. When DNA break rejoining is impaired, the cell is unconditionally radiation sensitive. The fate of a repair-competent cell is determined by the time factor: the cell cycle arrest should be long enough to ensure the completion of repair. Incomplete repair or misrepair may be tolerated, when generation of the death signal is prevented. So, the character and timing of the signals are, to a large part, responsible for the cellular intrinsic radiation sensitivity and depend on the characteristics of the cellular signalling web.

Źródło:

Nukleonika; 2000, 45, 4; 215-220
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Sensitivity analysis of biological tissue freezing process with respect to the radius of spherical cryoprobe
Analiza wrażliwości procesu zamrażania tkanki biologicznej ze względu na promień kriosondy sferycznej

Autorzy:

Majchrzak, E.
Kałuża, G.

Powiązania:

https://bibliotekanauki.pl/articles/280301.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

freezing process
boundary element method
sensitivity analysis

Opis:

Application of the shape sensitivity analysis to the case of problems of the biological tissue freezing process is discussed. The freezing process described by a strongly non-linear bioheat transfer equation in which an additional term controlling the evolution of latent heat appears. Using the approach called 'the one domain method', one finally obtains a partial differential equation containing the substitute thermal capacity of tissue. The boundary and initial conditions determine the thermal interaction between the tissue and cryoprobe tip. In the paper, we consider a spherical internal cryoprobe. In order to estimate the influence of cryoprobe geometry on the course of the process, the shape sensitivity analysis is applied. In particular, a direct approach is used (explicit differentiation method). The results of numerical modeling (the boundary element method is applied) allow one to formulate essential practical conclusions concerning the course of cryosurgery treatments.
Praca dotyczy zastosowania analizy wrażliwości kształtu w zagadnieniach modelowaniaprocesuzamrażania tkanki biologicznej. Proces ten jest opisany silnie nieliniowym równaniem przepływu biociepła, w którym pojawia się dodatkowy składnik związany z wydzielaniem się utajonego ciepła zamrażania. Formalne przekształcenia wyjściowego równania opisującego proces prowadzi do równania różniczkowego, w którym występuje zastępcza pojemność cieplna tkanki (tzw. metoda jednego obszaru). Odpowiednio przyjęte warunki brzegowe determinują oddziaływania termiczne między tkanką a końcówką kriosondy. W pracy rozważa się sferyczną kriosondę wewnętrzną. VV celu oszacowania wpływu geometrii kriosondy na przebieg procesu zamrażania wykorzystano podejście bezpośrednie analizy wrażliwości kształtu. Wyniki obliczeii numerycznych otrzymane za pomocą metody elementów brzegowych pozwoliły na sformułowanie wniosków przydatnych w praktyce kriochirurgicznej.

Źródło:

Journal of Theoretical and Applied Mechanics; 2006, 44, 2; 381-392
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Time-independent stochastic design sensitivity analysis of structural systems with second-order accuracy

Autorzy:

Weber, H.

Powiązania:

https://bibliotekanauki.pl/articles/281017.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

design sensitivity
statics
random parameter
finite element

Opis:

In the paper, the static sensitivity of complex structures with respect to random design parameters is presented. Using the adjoint system method, based on the mean-point second-order perturbation method, the first two probabilistic moments of time-independent sensitivity are formulated with means and cross-covariances of random design parameters as the input data. It enables one to obtain the second-order accuracy of the solution. The presented formulations are illustrated by a number of numerical examples. The influence of finite element mesh density for the obtained results is discussed using the analysis of the spatial bar dome.

Źródło:

Journal of Theoretical and Applied Mechanics; 2016, 54, 3; 783-794
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Path to ε-HNIW with Reduced Impact Sensitivity

Autorzy:

Elbeih, A.
Husarova, A.
Zeman, S.

Powiązania:

https://bibliotekanauki.pl/articles/358508.pdf

Data publikacji:

2011

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

HNIW
crystallization
thermal stability
impact sensitivity
SEM

Opis:

New purification method was applied to obtain epsilon HNIW (ε-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane, ε-HNIW) which has low impact sensitivity. The method is based on removing the impurities from a solution of alpha HNIW (ε-HNIW) by a chemical reaction to obtain pure epsilon form. For comparison, selected different published methods for recrystallization of HNIW to obtain the epsilon form were studied. All the selected methods are based on solvent-antisolvent technique. The optimum parameters, such as type of solvent and anti-solvent, volume ratio of solvent to anti-solvent, rate of addition, speed of stirring, etc., were applied to enhance the crystal size and shape of ε-HNIW. Checking the polymorphs of the obtained HNIW was done by Fourier transform infrared spectroscopy (FTIR). The thermal stability of the prepared samples was studied by using differential thermal analysis technique (DTA). Qualitative analysis of the crystal size and shape was done using scanning electron microscope (SEM) devise. Quantitative measurement of the crystals sizes for the studied samples was determined by Laser scattering particle size distribution analyzer. Impact sensitivity was measured by falling hammer test. The results indicate that all the applied methods of recrystallization give ε-HNIW. The impact sensitivity of HNIW decreases by obtaining small particles with regular shape. All the used published methods produce ε-HNIW with higher impact sensitivity than other nitramines. While the obtained crystals from the new method has regular smooth surface, with small particle size and its impact sensitivity is lower than RDX and HMX.

Źródło:

Central European Journal of Energetic Materials; 2011, 8, 3; 173-182
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Novel High-Nitrogen Content Energetic Compounds with High Detonation and Combustion Performance for use in Plastic Bonded Explosives (PBXs) and Composite Solid Propellants

Autorzy:

Keshavarz, M. H.
Abadi, Y. H.
Esmaeilpour, K.
Damiri, S.
Oftadeh, M.

Powiązania:

https://bibliotekanauki.pl/articles/358704.pdf

Data publikacji:

2018

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

tetrazoles derivatives
detonation performance
combustion performance
sensitivity

Opis:

Five novel high-nitrogen content (N>50%) derivatives of tetrazole are introduced in the study reported here. The assessment of various properties of these compounds were performed, which include physicothermal properties (crystal density, condensed phase heat of formation, melting point, enthalpy of fusion and entropy of fusion), detonation performance (velocity and pressure of detonation, detonation temperature and power), sensitivity with respect to external stimuli (impact, shock, friction and electric spark) and combustion performance (specific impulse). The predicted results of these compounds are compared with dihydroxylammonium 5,5’-bistetrazole-1,1’-diolate (TKX-50) and octanitro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) as a high performance ionic salt and a neutral explosive, respectively. The novel energetic compounds were found to have higher detonation and combustion performance than either TKX-50 or HMX. The new explosives are therefore good candidates to obtain high detonation and combustion performance in plastic bonded explosives (PBXs) and composite solid propellants, respectively.

Źródło:

Central European Journal of Energetic Materials; 2018, 15, 2; 364-375
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Considerations on Energy Deposition with the BAM-Fallhammer

Autorzy:

Von Oertzen, A.
Lehmann, T.

Powiązania:

https://bibliotekanauki.pl/articles/358904.pdf

Data publikacji:

2016

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

explosives
impact sensitivity
BAM-Fallhammer
quality control

Opis:

The BAM-Fallhammer is a mechanical device to test the impact sensitivity of explosives and to determine a sensitiveness level. By its construction it transforms potential energy into kinetic energy of an impacting hammer, then hitting the sample. Ideally the entire potential energy is available at the moment of impact and the supporting base is infinitely rigid. By this study we want to quantify how much a real Fallhammer deviates from the ideal concept, and what the differences between different Fallhammers in different laboratories are. This information has never been collected in a consistent way. The aim of the authors is to develop guidance on the mechanical properties of the Fallhammer, which can be used for different purposes such as internal quality control, validation of the correct functioning of the Fallhammer, preparation of Round-Robin tests and similar. An established and verified mechanical status of a Fallhammer would greatly improve the quality and comparability of results and Round-Robin tests on the impact sensitivity of explosives.

Źródło:

Central European Journal of Energetic Materials; 2016, 13, 2; 273-288
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

Empathic Sensitivity of Children with Special Educational Needs in Inclusive Learning Environment in Poland

Autorzy:

Barłóg, Krystyna

Powiązania:

https://bibliotekanauki.pl/articles/1969295.pdf

Data publikacji:

2018-09-30

Wydawca:

Wydawnictwo Adam Marszałek

Tematy:

empathic sensitivity
special educational needs
inclusive education

Opis:

Empathic sensitivity or empathy is the basis for human interactions and communication, proper interpersonal relationships. As a process and phenomenon, it is particularly important in education and social and emotional functioning. The research, which has already been conducted, was focused on the development of empathic sensitivity of children and young, able-bodied people. The reform of education in Poland implemented in 1989 enabled students with special educational needs to access education in mainstream schools. Preliminary studies in this field are an attempt to show the empathic sensitivity of children with special educational needs who are learning together with healthy, non-disabled friends – their peers in mass education, which is inclusive. The aim of this paper is to present the research outcomes concerning inclusive education in the Podkarpackie Province, Poland.

Źródło:

The New Educational Review; 2018, 53; 273-282
1732-6729

Pojawia się w:

The New Educational Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 51.

Tytuł:

Properties of a fibre optic strain sensor in the configuration of a Mach-Zehnder modal interferometer with a polarization maintaining photonic crystal fibre

Autorzy:

Kaczmarek, C.

Powiązania:

https://bibliotekanauki.pl/articles/221393.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

photonic crystal fibre
modal interferometer
temperature sensitivity

Opis:

The paper presents the properties of a strain sensor, which was made using the micro hole collapse method and operates in the configuration of a Mach-Zehnder modal interferometer with a PM-1550-01 polarization maintaining photonic crystal fibre. The sensor’s transfer curve was determined analytically. Its strain sensitivity, determined from measurements, decreases slightly with increasing wavelength and is in a range from -2.01 to -2.23 pm/με in the wavelength range 1520-1580 nm. Based on the Fourier analysis of the wavelength spectrum of the constructed sensor, the difference of the group refractive indices of the core and the cladding of the photonic crystal fibre was determined, which are in a range from 7.45·10^-3 to 1.01·10^-2. The temperature sensitivity of the sensor, determined on the basis of measurements performed in a range from 23 to 60°C, is positive and equals 5.9 pm/K.

Źródło:

Metrology and Measurement Systems; 2018, 25, 2; 417-424
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 52.

Tytuł:

Process of separating acetonitrile and water using LTTMs as entrainer

Autorzy:

Li, Chengshuai
Ma, Wencheng

Powiązania:

https://bibliotekanauki.pl/articles/2081511.pdf

Data publikacji:

2021

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

LTTMs
ACN
Simulation
Extraction distillation
Sensitivity analysis

Opis:

New extractive distillation confi gurations, which use low transition temperature mixtures (LTTMs) as entrainers, have attracted widespread attention among scholars due to their green processes. Furthermore, the design and comparison of different processes can promote the application of new solvents in the future. In this study, two extractive distillation processes, the extractive distillation column (ED) and the extraction dividing wall column (EDW), were selected from previous work. The separation process of acetonitrile (ACN)-water ternary mixtures was studied, and GC3:1(choline chloride/glycolic acid mixture (molar mass 1:3)) and EC2:1((choline chloride/ethylene glycol 1:2 molar mass) were used as entrainers. Minimum consumption energy and the purity of ACN and water were set as the goals, and our sensitivity analysis and economic evaluation results showed that both ED and EDW were effective. As a result, LTTMs can be used in extractive distillation for azeotrope separation.

Źródło:

Polish Journal of Chemical Technology; 2021, 23, 4; 1-9
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 53.

Tytuł:

Sensitivity enhancement of a nanocomposite-based fiber optics sensor with platinum nanoparticles

Autorzy:

Vahed, Hamid
Ghazanfari, Elham

Powiązania:

https://bibliotekanauki.pl/articles/174148.pdf

Data publikacji:

2019

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

surface plasmon resonance
sensor
nanocomposite
platinum
sensitivity

Opis:

In this paper, sensitivity enhancement of a nanocomposite-based optical fiber sensor with platinum nanoparticles is investigated. This optical fiber sensor is based on the surface plasmon resonance in the nanocomposite layer coating the core of optical fiber. A comparison is carried out for sensitivity between an optical fiber sensor based surface plasmon resonance with platinum layer and the one with nanocomposite layer. The nanocomposite layer consists of platinum nanoparticles with varying volume fraction which is arrayed in a host dielectric material of InN or TiO₂. We show that the sensitivity of the sensor with a nanocomposite layer containing platinum nanoparticles is bigger than the sensitivity of the sensor with a platinum layer for all the values of refractive index of sample media. Also, the effect of the thickness of the nanocomposite layer and the volume fraction of platinum nanoparticles on the spectrum of the transmitted power has been investigated.

Źródło:

Optica Applicata; 2019, 49, 1; 65-74
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 54.

Tytuł:

Sensitivity analysis as a tool to optimise Human Development Index

Autorzy:

Kuc-Czarnecka, Marta

Powiązania:

https://bibliotekanauki.pl/articles/22446409.pdf

Data publikacji:

2019

Wydawca:

Instytut Badań Gospodarczych

Tematy:

Human Development Index
composite indicators
sensitivity analysis

Opis:

Research background: Composite indicators are commonly used as an approximation tool to measure economic development, the standard of living, competitiveness, fairness, effectiveness, and many others being willingly implemented into many different research disciplines. However, it seems that in most cases, the variable weighting procedure is avoided or erroneous since, in most cases, the so-called ?weights by belief? are applied. As research show, it can be frequently observed that weights do not equal importance in composite indicators. As a result, biased rankings or grouping of objects are obtained. Purpose of the article: The primary purpose of this article is to optimise and improve the Human Development Index, which is the most commonly used composite indicator to rank countries in terms of their socio-economic development. The optimisation will be done by re-scaling the current weights, so they will express the real impact of every single component taken into consideration during HDI?s calculation process. Methods: In order to achieve the purpose mentioned above, the sensitivity analysis tools (mainly the first-order sensitivity index) were used to determine the appropriate weights in the Human Development Index. In the HDI?s resilience evaluation process, the Monte Carlo simulations and full-Bayesian Gaussian processes were applied. Based on the adjusted weights, a new ranking of countries was established and compiled with the initial ranking using, among others, Kendall tau correlation coefficient. Findings & Value added: Based on the data published by UNDP for 2017, it has been shown that the Human Development Index is built incorrectly by putting equal weights for all of its components. The weights proposed by the sensitivity analysis better reflect the actual contribution of individual factors to HDI variability. Re-scaled Human Development Index constructed based on proposed weights allow for better differentiation of countries due to their socio-economic development.

Źródło:

Equilibrium. Quarterly Journal of Economics and Economic Policy; 2019, 14, 3; 425-440
1689-765X
2353-3293

Pojawia się w:

Equilibrium. Quarterly Journal of Economics and Economic Policy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 55.

Tytuł:

Mechanical and Sensitivity Properties of Cast PBXs Containing Agglomerated TATB

Autorzy:

Cai, Jialin
Luo, Guan
Huang, Hui
Zhen, Shensheng
Shi, Yuantong

Powiązania:

https://bibliotekanauki.pl/articles/27788223.pdf

Data publikacji:

2022

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

cast PBXs
TATB
mechanical properties
sensitivity properties

Opis:

The aim of this study was to investigate the effects of agglomerated TATB on the mechanical and sensitivity properties of cast polymer-bonded explosives (PBXs). By introducing agglomerated TATB, cast PBXs with a high solids content can be obtained. The mechanical properties of TATB-based cast PBXs were evaluated by tensile and compression tests. The experimental results showed that the addition of the agglomerated TATB clearly enhanced the ductility and fracture toughness, but decreased the strength of the PBXs. However, the strength increased with the decreasing particle size of the agglomerated TATB. When TATB-crystal was replaced by agglomerated TATB in the cast PBXs, a significant drop in the initial modulus and stress were observed. Samples with a higher content of agglomerated TATB were less sensitive to impact stimuli. The desired mechanical and sensitivity characteristics may be achieved for TATB-based cast PBXs by introducing agglomerated TATB.

Źródło:

Central European Journal of Energetic Materials; 2022, 19, 2; 168--180
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 56.

Tytuł:

Sensitivity-based stability evaluation of closed piping networks

Autorzy:

Fu, Y.
Cai, Y.
Wu, K.

Powiązania:

https://bibliotekanauki.pl/articles/1933181.pdf

Data publikacji:

2007

Wydawca:

Politechnika Gdańska

Tematy:

closed-loop water system
sensitivity
stability
evaluation

Opis:

Aiming at a closed-loop water system of HVAC engineering, the authors put forward an evaluation method of systems' stability based on sensitivity. It has three evaluating indexes: [alfa] - the summation of flow changes in other subcircuits influenced by resistance change in a certain subcircuit [Beta] - the summation of flow changes in a certain sub circuit influenced by resistance changes in other subcircuits; [gamma] - average [Beta] (or [alfa]) value of each subcircuit, reflecting the strength of regulating interference between subcircuits. The method is used to analyze the stability of a reverse return system (RRS) and a direct return system (DRS). The DRS subcircuit farthest from the heat source and the middle RRS are the least stable. Stability of the whole RRS is inferior to that of the DRS.

Źródło:

TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2007, 11, 3; 197-202
1428-6394

Pojawia się w:

TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 57.

Tytuł:

DOŚWIADCZENIE „OBCEGO” W PAMIĘCI HISTORYCZNEJ POLAKÓW
EXPERIENCE OF AN "ALIEN" IN THE HISTORICAL MEMORY OF POLES

Autorzy:

Drzewiecki, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/418841.pdf

Data publikacji:

2017

Wydawca:

Akademia Marynarki Wojennej. Wydział Nauk Humanistycznych i Społecznych

Tematy:

historical memory
experience
immigration
politics
sovereignty
sensitivity

Opis:

Historical memory represents a kind of battery to store our national experience, be it positive or negative, that has a major impact on who we are today, and how we deal with our past. This experience derives, by way of illustration, from emigration that made Poles experience the feeling of "alienation". The author wonders what lessons stem from this experience, and whether living in a free and democratic state, we are capable of understanding and assisting the "strangers", uprooted from their ancestral land by the vortex of history, and forced to seek a new place of settlement and to "build up their life" in the more and more complicated international reality.

Źródło:

Colloquium; 2017, 9, 4; 33-54
2081-3813
2658-0365

Pojawia się w:

Colloquium

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 58.

Tytuł:

Synthesis of a pumping unit with consideration of a flexible member in the system

Autorzy:

Sapietová, A.
Sekerka, M.
Vaško, M.
Sapieta, M.

Powiązania:

https://bibliotekanauki.pl/articles/102969.pdf

Data publikacji:

2016

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

torque
sensitivity analysis
multibody systems
MSC ADAMS

Opis:

To achieve a correct function and maximal effectiveness of a pumping unit, it is necessary to correctly design the input dynamic parameters. This paper will present sensitivity analysis, which aims to find appropriate input parameters needed to realize the prescribed work tasks from the point of view of consideration of flexible member in the system.

Źródło:

Advances in Science and Technology. Research Journal; 2016, 10, 31; 119-123
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 59.

Tytuł:

Fuzzy global sensitivity analysis of fuzzy net present value

Autorzy:

Sari, I. D.
Kuchta, D.

Powiązania:

https://bibliotekanauki.pl/articles/206340.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

fuzzy sensitivity analysis
fuzzy net present value

Opis:

The cash flows of an investment project are influenced by several factors. All the factors influencing fuzzy net present value of a project should be taken into account, together with their variability, in order to analyze the whole project, and to make the best decisions during the project’s life. In this paper a fuzzy global sensitivity analysis method is proposed for fuzzy net present value to determine the influences of the factors on the worth of an investment project. The results of the proposed method for an application are also interpreted.

Źródło:

Control and Cybernetics; 2012, 41, 2; 481-496
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 60.

Tytuł:

Sensitivity analysis of an identification method dedicated to nonlinear systems working under operational loads
Analiza wrażliwości metody identyfikacji układów nieliniowych w warunkach eksploatacyjnych

Autorzy:

Iwaniec, J.

Powiązania:

https://bibliotekanauki.pl/articles/281049.pdf

Data publikacji:

2011

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

sensitivity analysis
nonlinear system identification
operational loads

Opis:

In the paper, the exploitational nonlinear systems identification method based on algorithms of the restoring force, boundary perturbations and direct parameter identification methods is presented. The obtained parameter estimates provide information concerning forces transferred on the foundation and find application in the model-based diagnostics. The results of the sensitivity analysis carried out in order to assess the influence of input parameters uncertainties (accuracy of resonant frequency and amplitude estimates, errors of transfer function estimation in operational conditions, value of introduced additional mass) on the accuracy of estimated system parameters are also presented.
W pracy przedstawiono metodę operacyjnej identyfikacji parametrów modeli nieliniowych konstrukcji mechanicznych, realizowaną w oparciu o algorytmy metody sił resztkowych, zaburzeń brzegowych oraz bezpośredniej identyfikacji parametrów. Uzyskane estymaty parametrów dostarczają informacji o siłach przekazywanych na pod- łoże i znajdują zastosowanie w diagnostyce realizowanej w oparciu o model układu nieuszkodzonego. W celu oszacowania wpływu niepewności parametrów wejściowych na dokładność estymowanych parametrów układu, przeprowadzono analizę wrażliwości poszukiwanych parametrów układu (masy, sztywności, tłumienia) na dokładność estymacji częstotliwości i amplitud rezonansowych (uwarunkowaną błędami estymacji funkcji przejścia w warunkach eksploatacyjnych), a także wartość masy wprowadzanej do układu w celu zmodyfikowania jego własności dynamicznych (zgodnie z algorytmem metody zaburzeń brzegowych).

Źródło:

Journal of Theoretical and Applied Mechanics; 2011, 49, 2; 419-438
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 61.

Tytuł:

Determination of the Mechanical and Thermal Properties, and Impact Sensitivity of Pressed HMX-based PBX

Autorzy:

Li, Yuxiang
Wu, Peng
Hua, Cheng
Wang, Jun
Huang, Bing
Chen, Jin
Qiao, Zhiqiang
Yang, Guangcheng

Powiązania:

https://bibliotekanauki.pl/articles/358006.pdf

Data publikacji:

2019

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

nanoexplosives
impact sensitivity
particle size
hot spot

Opis:

Submicron- and nano-explosives have attracted growing attention, while the mechanism of how particle size influences the impact sensitivity is not completely understood. In the present work, HMX (octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine) based PBXs (plastic bonded explosives) of three particle size distributions (1-2 and 10-20 μm, and 100-300 nm) and two pressed densities (91%TMD and 79%TMD) were characterized and tested with a range of techniques to determine their mechanical and thermal properties and impact sensitivities. The results demonstrated that with decreased particle size, the mechanical strength as well as the thermal conductivity were dramatically improved, and the impact sensitivity was significant decreased. The structure of impacted samples suggested that the ignition mechanism is dependant on the particle size. Samples with higher density were more sensitive to impact, as the impact force acting on these samples was higher. The correlation between particle size and impact sensitivity is discussed in detail.

Źródło:

Central European Journal of Energetic Materials; 2019, 16, 2; 295-315
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 62.

Tytuł:

Influence of Guanylurea Dinitramide (GUDN) on the Thermal Behaviour, Sensitivity and Ballistic Properties of the B-KNO3-PEC Ignition System

Autorzy:

Badgujar, D. M.
Phatak, S.
Wagh, R. M.
Bhingarakar, V.
Talawar, M. B.
Kakade, S. D.

Powiązania:

https://bibliotekanauki.pl/articles/358215.pdf

Data publikacji:

2018

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

ballistics
guanylurea dinitramide
igniter
sensitivity
thermal analysis

Opis:

Boron and potassium nitrate are the key components for the ignition system of the igniter composition for rocket propellants. Boron-potassium nitrate-ethyl cellulose (B:KNO3:PEC) in proportions of 30:70:10 is a well established igniter composition. The composition delivers a maximum pressure in the range 4.0-4.6 MPa in closed vessel firing at a loading density of 0.01 g/cm3. For the effective ignition of a large booster stage propellant (length more than 4 m), an enhancement in the maximum pressure, without affecting safety, is a prime requirement. The use of guanylurea dinitramide (GUDN) in an igniter composition has not been reported in the literature. Hence, the present study on the effect of GUDN on the combustion behaviour and sensitivity of the B/KNO3 composition (30/70) has been carried out. Several compositions containing different weight percents of GUDN were prepared. Their thermal behaviour was determined by thermal analysis DSC-TGA. Their sensitivities to external stimuli such as impact, friction and spark were evaluated. The results of closed vessel firings indicated that GUDN-based igniter compositions produced higher peak pressures (up to 4.5 MPa to 5.8 MPa), with invariably lower burning times, compared to the control composition. The REAL computer programme indicated an increase in the flame temperature of the composition from 2238 K to 2425 K on addition of GUDN. All of the compositions were insensitive towards friction up to 36 kg, and towards spark up to 5 J energy.

Źródło:

Central European Journal of Energetic Materials; 2018, 15, 2; 315-326
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 63.

Tytuł:

Effect of polar plasticizers on the characteristics of selected cyclic nitramines

Autorzy:

Elbeih, A.
Zeman, S.
Pachman, J.

Powiązania:

https://bibliotekanauki.pl/articles/358627.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

energetic materials
polymers
sensitivity
combustion
thermal stability

Opis:

Dioctyl sebacate (DOS) is a plasticizer used with oily material for the softening of polyisobutylene binder (PIB) to form a polymeric matrix. This matrix was used for the preparation of various plastic explosives. The following energetic cyclic nitramines were used as explosive fillers: BCHMX (cis-1,3,4,6- tetranitrooctahydroimidazo [4,5 d]imidazole), ε-HNIW (ε-2,4,6,8,10,12- hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane), RDX (1,3,5-trinitro-1,3,5- triazacyclohexane), and HMX (1,3,5,7-tetranitro-1,3,5,7-tetrazacyclooctane). For comparison, Fluorel binder was used for the preparation of several plastic bonded explosives (PBXs) based on the same selected explosives. Impact and friction sensitivities of the prepared samples and the pure explosive fillers were measured. The thermal stability was studied using differential thermal analysis (DTA). High performance liquid chromatography (HPLC) was used to detect the presence of BCHMX dissolved in dioctyl sebacate (DOS). The heat of combustion of the prepared samples and of the pure explosive fillers was measured using a bomb calorimetry. The results show that PIB softened by plasticizer (DOS) has a greater positive effect on decreasing the impact sensitivity of the studied pure explosives than Fluorel binder. On the other hand, the plasticizer acts as a solvent for the energetic materials and decreases the decomposition temperature of these plastic explosives.

Źródło:

Central European Journal of Energetic Materials; 2013, 10, 3; 339-349
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 64.

Tytuł:

Vibration diagnostics of footbridge with use of rotation sensor

Autorzy:

Banaś, A.
Wilde, K.

Powiązania:

https://bibliotekanauki.pl/articles/1395589.pdf

Data publikacji:

2014

Wydawca:

Polskie Towarzystwo Promocji Wiedzy

Tematy:

vibrational diagnostics
footbridge
sensitivity analysis
rotation sensors

Opis:

The benefits of the additional measurement of rotational degrees of free-dom on the performance of the vibration diagnosis of bridges are studied in this paper. The common vibrational diagnostics that uses translational degrees of freedom is extended by measurements of rotations. The study is curried out on a footbridge and the presence of damage as well as its location and size is determined with use of FEM updating procedure. The results showed that rotational degrees of freedom significantly improve the effectiveness of the vibrational method.

Źródło:

Applied Computer Science; 2014, 10, 4; 38-49
1895-3735

Pojawia się w:

Applied Computer Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 65.

Tytuł:

A New Thermally-stable Insensitive High Explosive:N,N′-Bis(1,2,3,4-tetrazol-5-yl)-4,4′-diamino-2,2′,3,3′,5,5′,6,6′-octanitroazobenzene (BTeDAONAB)

Autorzy:

Mousavi, S.
Esmaeilpour, K.
Keshavarz, M. H.

Powiązania:

https://bibliotekanauki.pl/articles/951499.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

synthesis
BTeDAONAB
sensitivity
thermal stability
high explosive

Opis:

A novel high performance explosive compound, N,N′-bis(1,2,3,4-tetrazol5-yl)-4,4′-diamino-2,2′,3,3′,5,5′,6,6′-octanitroazobenzene( BTeDAONAB), is introduced which is a thermally stable, insensitive high explosive. The presence of −NH2, −N=N− groups and the tetrazole ring simultaneously in the BTeDAONAB unit surprisingly increases its thermal stability. For the identification and characterization of BTeDAONAB, different analytical techniques have been used, including melting point, IR, 1H NMR, 13C NMR spectroscopy, elemental analysis, differential thermal analysis (DTA), thermogravimetry (TG), differential scanning calorimetry (DSC) and X-ray diffraction (XRD). The sensitivity and detonation properties of BTeDAONAB were compared with 2,4,6-triamino1,3,5-trinitrobenzene (TATB) and N,N′-bis(1,2,4-triazol-3-yl-)-4,4′-diamino2,2′,3,3′,5,5′,6,6′-octanitroazobenzene (BTDAONAB), two well-known, thermally stable, insensitive high explosives, as well as hexanitrostilbene (HNS). These studies show that BTeDAONAB has favorable thermal stability with high performance.

Źródło:

Central European Journal of Energetic Materials; 2013, 10, 4; 455-465
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 66.

Tytuł:

A comprehensive mathematical programming model for minimizing costs in a multiple-item reverse supply chain with sensitivity analysis

Autorzy:

Mahmoudi, H.
Fazlollahtabar, H.

Powiązania:

https://bibliotekanauki.pl/articles/407169.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

reverse supply chain
mathematical modeling
sensitivity analysis

Opis:

These instructions give you guidelines for preparing papers for IFAC conferences. A reverse supply chain is configured by a sequence of elements forming a continuous process to treat return-products until they are properly recovered or disposed. The activities in a reverse supply chain include collection, cleaning, disassembly, test and sorting, storage, transport, and recovery operations. This paper presents a mathematical programming model with the objective of minimizing the total costs of reverse supply chain including transportation, fixed opening, operation, maintenance and remanufacturing costs of centers. The proposed model considers the design of a multi-layer, multi-product reverse supply chain that consists of returning, disassembly, processing, recycling, remanufacturing, materials and distribution centers. This integer linear programming model is solved by using Lingo 9 software and the results are reported. Finally, a sensitivity analysis of the proposed model is also presented.

Źródło:

Management and Production Engineering Review; 2014, 5, 3; 42-52
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 67.

Tytuł:

Rola stylów poznawczych w odbiorze bodźców smakowych

Autorzy:

Złotogórska, Agata
Szäefer, Agata

Powiązania:

https://bibliotekanauki.pl/articles/1177627.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Kazimierza Wielkiego w Bydgoszczy

Tematy:

cognitive style
heuristic
sensory sensitivity
taste
vision

Opis:

Summary. Little is known about cognitive mediators of colour-flavour perception when they are atypically combined. We explored the possibility that cognitive style and sensory sensitivity may act as intermediaries and might explain interpersonal differences in making heuristic decision based on visual cues. 55 participants (M = 21.42; SD = 2.12) were ask to complete two questionnaires. Afterwards they were presented with three coloured samples of sweetened milk and asked to select perceived flavour. Almost all participants used visual cue in determining what flavour the beverage was at least in one sample. Neither reflection nor self-awareness did significantly relate to correct recognition of the flavour. Nevertheless negative significant association was found between sensory sensitivity and self-awareness (rho = -0.40; p < 0.01).The results also indicate that women more frequently made heuristic decisions. Findings confirm that the importance of visually acquired information exceeds that from other senses. The results indicate that people either focus on their inside or on the environment.

Źródło:

Polskie Forum Psychologiczne; 2015, XX, 2; 244-260
1642-1043

Pojawia się w:

Polskie Forum Psychologiczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 68.

Tytuł:

Device for measurement and control of humidity in crude oil and petroleum products

Autorzy:

Semenov, Andriy
Zviahin, Oleksander
Kryvinska, Natalia
Semenova, Olena
Rudyk, Andrii

Powiązania:

https://bibliotekanauki.pl/articles/2204346.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

crude oil
humidity
moisture content
measurement
sensitivity

Opis:

A device with a frequency-modulated output signal has been developed to increase the sensitivity and accuracy of measuring moisture content in crude oil and petroleum products in the range of 0~20%. The main element of the device is a self-oscillator transducer based on a transistor structure with negative differential resistance. A capacitive sensor in the form of a capacitive cylindrical structure with cylindrical electrodes was used to determine moisture content in crude oil and petroleum products. Electric permittivity of a two-component mixture of oil and water was estimated and the capacitance of the humidity-sensitive capacitive cylindrical structure with cylindrical electrodes was calculated. An electrical diagram of the device for measuring and controlling the humidity of crude oil and petroleum products has been developed. The relative error of converting the humidity of oil and petroleum products into capacitance which was caused by the change in oil temperature, was determined to be 0.225%. Values of relative errors of the device for measuring the humidity of oil and petroleum products are as follows: 1.355 · 10-5% is caused by instability of the oscillator frequency, 0.01% is caused by fluctuations in the supply voltage of the self-oscillator transducer, 0.05% is caused by a change in ambient temperature by 1°C. For the developed device, which used errors of the first and second type, the reliability of humidity control of oil and petroleum products has been determined to be 0.9591.

Źródło:

Metrology and Measurement Systems; 2023, 30, 1; 195--208
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 69.

Tytuł:

Characteristics of pure Love mode SAW sensor with graphene interdigital transducer for biosensing applications

Autorzy:

Chen, Chen
Wang, Xinyu
Wang, Yuting

Powiązania:

https://bibliotekanauki.pl/articles/2233256.pdf

Data publikacji:

2022

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

SAW biosensor
Love mode
graphene
mass sensitivity

Opis:

The characteristics of Love wave biosensors are systematically investigated. The results show that sensors with combination of a ZnO guiding layer and 90ST or 90AT Quartz substrates exhibit purer Love modes than those with the SiO2 guiding layer. The corresponding maxi- mum sensitivities are −10.9069 and −11.641m2/kg, respectively, which are nearly two times higher than those of SiO2 layer. The ZnO/90ST Quartz Love wave sensor exhibits the largest K2 of 0.3022 and achieves 0 ppm/oC of TCF at hZnO/λ = 0.0216. The sensor employing the Graphene IDT further improves the sensitivity by nearly one order of magnitude.

Źródło:

Journal of Theoretical and Applied Mechanics; 2022, 60, 4; 551--559
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 70.

Tytuł:

Socio-economic factors in the event of an oil spill in the North Adriatic

Autorzy:

Suban, V.
Pegan, U.
Demšar, J.
Tuljak-Suban, D.
Perkovič, M.
Bandelj, V.

Powiązania:

https://bibliotekanauki.pl/articles/24201431.pdf

Data publikacji:

2023

Wydawca:

Uniwersytet Morski w Gdyni. Wydział Nawigacyjny

Tematy:

oil spill
vulnerability
Northern Adriatic
analytical hierarchy process
costal pollution
sensitivity mapping
socio economic assessmnet
environmental sensitivity index

Opis:

Should an oil spill of tier III magnitude occur in the Northern Adriatic, there is a high probability that the oil will reach and pollute the surrounding coastline. Therefore, it is vital to conduct coastal vulnerability studies to develop priority plans and coastal vulnerability maps to help first responders protect the coastline. As there is no common contingency plan for oil spills in the Northern Adriatic, three countries, Italy, Slovenia, and Croatia, which share the area, decided to participate in the North Adriatic Incident Response System (NAMIRS) project. Part of the project was to conduct a coastal vulnerability study in the area. One of the three pillars for determining vulnerability, in addition to the ecological and geomorphological factors, is the socioeconomic aspect, which was studied as part of the research. As there are no clear scientific methods to determine the vulnerability of the socio‐economic factors, a survey was conducted where the participants gave their subjective opinion on its value. This was done through three workshops organised in each participating country, where professional stakeholders familiar with the state of socio‐economic activities assessed their vulnerability. The values obtained were combined with the assessments of the geomorphological and environmental factors and gathered in a coastal vulnerability layer, which was incorporated into a GIS as a standard coastal vulnerability map that will help first responders prioritise coastal protection. The research results will also be useful globally and not just in the area studied by NAMIRS, since the method used is readily applicable to any part of the world.

Źródło:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 685--691
2083-6473
2083-6481

Pojawia się w:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 71.

Tytuł:

Duchowość jako niedoceniany aspekt psyche. Propozycja nowego ujęcia duchowości w psychologii – kategoria wrażliwości duchowej

Autorzy:

Kapała, Magdalena

Powiązania:

https://bibliotekanauki.pl/articles/614437.pdf

Data publikacji:

2017

Wydawca:

Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej

Tematy:

spirituality
spiritual sensitivity
the components of spiritual sensitivity
Spiritual Sensitivity Inventory (SSI)
subjectivity
subjective quality of life
duchowość
wrażliwość duchowa
składniki wrażliwości duchowej
Inwentarz Wrażliwości Duchowej (SSI)
podmiotowość
poczucie jakości życia

Opis:

In the article, I present a proposal for a new approach to spirituality in the field of psychology – the spiritual sensitivity (a disposition to experience spirituality, manifested in the embracement of the nature of things in the transcendent and final perspective, in moral sensitivity, and the ability to find meaning in paradoxical and limiting situations), which consists of individual, interconnected competences (Holism and Harmony Wisdom, Awareness, Meaning; Religiosity and Faith; Ethics and Moral Sensitivity/Conscience; Openness to  Other People; Spiritual Commitment; Aesthetic Sensitivity). The proposed theoretical framework relates spirituality – abstract, ideational realm – to the specific, individualized, everyday life of a person, i.e. to the selection of objectives and measures for their implementation, as well as it allows to operationalization the spirituality in easier way in research studies. In the article, I briefly present the method for measuring spiritual sensitivity – Spiritual Sensitivity Inventory (SSI) (Straś-Romanowska, Kowal, Kapała) – and indicate some regularities detected in a series of studies on the nature of the phenomenon and its role in human life, e.g. its importance for the sense of subjectivity and subjective quality of life of people.
W artykule została przedstawiona propozycja nowego sposobu ujmowania duchowości w obszarze psychologii jako wrażliwości duchowej (dyspozycja do doświadczania duchowości przejawiająca się w ujmowaniu zdarzeń w perspektywie transcendentnej i ostatecznej, we wrażliwości moralnej oraz umiejętności odnajdywania sensu w sytuacjach paradoksalnych i granicznych), na którą składają się poszczególne, połączone ze sobą kompetencje (Holizm i Harmonia; Mądrość, Świadomość, Sens; Religijność i Wiara; Wrażliwość Etyczno-Moralna/Sumienie; Otwartość na Drugą Osobę; Zaangażowanie Duchowe; Wrażliwość Estetyczna). Proponowane ramy teoretyczne odnoszą duchowość (sferę abstrakcyjną, ideacyjną) do konkretnego, codziennego, zindywidualizowanego życia osoby, np. do wyboru celów i środków służących do ich realizacji. Ponadto pozwalają na jej łatwiejszą operacjonalizację w badaniach naukowych. W ramach omówienia krótko została zaprezentowana metoda pomiaru wrażliwości duchowej – Inwentarz Wrażliwości Duchowej (SSI) (Straś-Romanowska, Kowal, Kapała) oraz zasygnalizowano niektóre prawidłowości wykryte w serii badań, dotyczącyce natury zjawiska i jego roli w życiu człowieka, np. znaczenia dla poczucia podmiotowości i subiektywnej jakości życia osoby.

Źródło:

Annales Universitatis Mariae Curie-Skłodowska, sectio J – Paedagogia-Psychologia; 2017, 30, 1
0867-2040

Pojawia się w:

Annales Universitatis Mariae Curie-Skłodowska, sectio J – Paedagogia-Psychologia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 72.

Tytuł:

Numerical evaluation of sensitivity of stress distribution in bone to geometric parameters of endoprosthesis

Autorzy:

Kowalczyk, P.

Powiązania:

https://bibliotekanauki.pl/articles/280295.pdf

Data publikacji:

1999

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

biomechanics
sensitivity analysis
finite element method
contact problems

Opis:

One of serious drawbacks in the bone endoprosthetics is the implant separation from bone or cement. Stress concentrations on the implant surface are deemed major factor in this process and implant shape optimization seems to be a natural way of improvement of stress disrtibution. An important tool in effective optimization algorithms is design sensitivity analysis (DSA). The discretized formulation of the problem in terms of the finite element method is presented in this paper. A three-dimensional model of femur with a cementless implant analysed. Frictionless contact and perfect bonding are assumed on the smooth and rough parts of the implant surface, respectively. Computational examples show the stress concentrations and their sensitivity to various geometric parameters of the implant.
Jednym z poważnych mankamentów endoprotetyki stawów jest odrywanie się implantu od cementu lub kości. Główną przyczyną tego zjawiska są koncentracje naprężeń na powierzchni implantu. Optymalizacja kształtu implantu jest uważana za naturalną drogę do przeciwdziałania temu zjawisku. Ważnym narzędziem w algorytmach optymalizacji jest analiza wrażliwości parametrycznej (DSA). Praca przedstawia sformułowanie zagadnienia wrażliwości w zdyskretyzowanym ujęciu metody elementów skończonych. Analizowana jest kość udowa z implantem bezcementowym o powierzchni gładkiej, a w górnej części porowatej. Przykłady numeryczne przedstawiają koncentracje naprężeń w tkance kostnej i ich wrażliwość na różne parametry kształtu implantu.

Źródło:

Journal of Theoretical and Applied Mechanics; 1999, 3; 555-577
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 73.

Tytuł:

Static and sensitivity analysis of nonlocal nanobeams subject to load and material uncertainties by convex modeling

Autorzy:

Radebe, I. S.
Adali, S.

Powiązania:

https://bibliotekanauki.pl/articles/281141.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

nanobeams
load uncertainty
material uncertainty
convex modeling
sensitivity

Opis:

At the nano-scale, loads acting on a nanobeam and its material properties are likely to be not known precisely, i.e., uncertain. In the present paper, the deflection of a nanobeam subject to load and material uncertainties is studied by convex modeling of the uncertainties. The level of uncertainty is taken to be bounded and the maximum deflection corresponding to the worst-case of loading or material properties is obtained, that is, the uncertainties are determined so as to maximize the deflection. The sensitivity of the deflection to the uncertainty in the material properties is also investigated. Numerical results are given relating the level of uncertainty to maximum deflection.

Źródło:

Journal of Theoretical and Applied Mechanics; 2015, 53, 2; 345-356
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 74.

Tytuł:

Recent Advances in the Study of the Initiation of Nitramines by Impact Using Their 15N NMR Chemical Shifts

Autorzy:

Jungová, M.
Zeman, S.
Yan, Q.-L.

Powiązania:

https://bibliotekanauki.pl/articles/358278.pdf

Data publikacji:

2014

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

impact sensitivity
initiation
15N NMR chemical shifts

Opis:

The relationship between the 15N NMR chemical shifts of aza nitrogen atoms in twelve nitramines and the impact sensitivity of these compounds, expressed as the drop energy, Edr, has been analyzed from the point of view of recently published findings. This relationship appears to be the best method for identifying the key atoms at the reaction centre of a given molecule. These atoms might be taken as “chemical hot spots”. The absence of any solid state influence on the chemical shifts, which were here determined in solution, does not have a fundamental influence on the reaction centre identification. The relationship discussed here confirms the close molecular structural dependence for drop energies (impact sensitivities) obtained for individual energetic materials (EMs) by means of a standard impact tester (Julius Peters) with the detection of the 50% probability of initiation based on acoustic detection. The dependence of impact sensitivity on specific crystal surfaces, using samples of individual EMs obtained by screening, should be investigated more extensively.

Źródło:

Central European Journal of Energetic Materials; 2014, 11, 3; 383-393
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 75.

Tytuł:

Exploring the role of socio-economic and built environment driving factors in shaping the commuting modal share: a path-analysis-based approach

Autorzy:

Boukarta, Soufiane
Berezowska-Azzag, Ewa

Powiązania:

https://bibliotekanauki.pl/articles/1050982.pdf

Data publikacji:

2020-12-21

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

commuting
questionnaire
sensitivity analysis
path analysis
Djelfa (Algeria)

Opis:

This paper explores the role of the built environment and socio-economic drivers in shaping the modal share of commuting. For this, we have identified through our literature review 67 potential variables categorised into two groups; the built environment and the households’ socio-economic characteristics. We have considered the city of Djelfa as a case study and used the questionnaire as a data collection tool. The questionnaire processing of the 700 questionnaires provided to the households allowed us to select 184 questionnaires for our analysis. The sensitivity analysis protocol is designed for two stages; (i) an exploratory stage, conducted by principal component analysis and bivariate correlation analysis; (ii) and a confirmatory stage conducted by a path analysis. The first step allowed us to hypothesise several causal pathways that could explain, directly or indirectly, the modal share of commuting. The results of the path analysis show that the modal shares of walking, private car and public transit are controlled by 13, 16 and 12 explanatory variables, respectively. Overall, the socio-economic characteristics of households discourage walking and transit use, and encourage private car commuting. On the other hand, the variables identified in this paper related to the built environment discourage walking, but encourage the use of public transit rather than private cars for commuting.

Źródło:

Quaestiones Geographicae; 2020, 39, 4; 87-107
0137-477X
2081-6383

Pojawia się w:

Quaestiones Geographicae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 76.

Tytuł:

Susceptibility to antibiotics of bacterial microorganisms most commonly isolated from clinical and subclinical forms of mastitis in cows

Autorzy:

Radzikowski, Daniel

Powiązania:

https://bibliotekanauki.pl/articles/1178235.pdf

Data publikacji:

2018

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

antibiotic therapy
antibiotics
dairy cows
mastitis
resistance
sensitivity

Opis:

Mastitis is an increasing problem in dairy farms and in the dairy industry. The paper presents changes in susceptibility of strains of bacteria isolated from quarter milk cows from mastitis in 2011, 2012, 2013, 2014, 2015 in the Factory Laboratory of Dairy Cooperative in south-eastern Poland. In total, 3409 strains of staphylococci, 2774 strains of streptococci and 423 strains of E. coli were isolated in these years. Susceptibility to antibiotics was examined by the disc diffusion method on Mueller-Hinton base. On the basis of the research it can be concluded that the highest sensitivity of staphylococci in all study periods is found for cefguin (from 91.2% to 96.1%) and cefapirin (92.2% to 96.2%), and the smallest for tetracycline (18 %), streptomycin (11.9%) and amoxicillin (9.3%). The highest sensitivity of bacteria from the Streptococcus family are cefapirin (97%), cefquinome (96.1%), amoxycycline (95.6%) and cefalexin (89.9%) on average in all years of research. The highest resistance was found for neomycin and streptomycin. They show that during the period under study over 90% of Escherichia coli were sensitive to streptomycin. Sensitivity at the level of 70%-80% was noted for amoxicillin, neomycin and cefapirin. The highest resistance of E. coli bacilli evolved for cefallaxin and tetracycline. Accordingly, early diagnosis of a pathogenic pathogen, and then selecting the appropriate form of treatment, gives you the opportunity to minimize the loss of mastitis in dairy cows.

Źródło:

World Scientific News; 2018, 93; 107-114
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 77.

Tytuł:

Climate response of Salix oritrepha growth along a latitudinal gradient on the northeastern Tibetan Plateau

Autorzy:

Lu, X.
Sigdel, S.R.
Dawadi, B.
Wang, Y.

Powiązania:

https://bibliotekanauki.pl/articles/2077745.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

shrub
radial growth
climate sensitivity
dendrochronology
summer temperature

Opis:

Shrubs are widespread at higher altitudes and latitudes. Dendrochronology of shrub growth has been intensively studied in the circumpolar Arctic, Mediterranean and Patagonia. However, relatively little is known about shrub growth responses to climate change on the Tibetan Plateau. Herein, we investigate climate sensitivity of Salix oritrepha growth along a north–south (35–39° N) latitudinal gradient on the north- eastern Tibetan Plateau. Four S. oritrepha shrub sites were selected for dendrochronology study. Pearson and partial correlation analyses were used to estimate strength of the climate sensitivity of the growth time series at each site. We found that not all of the site chronologies show consistent variations. Despite of this, its ra- dial growth was primarily limited by the July mean temperature across the latitudinal gradient, and warming summer climate tends to increase the growth of S. oritrepha on the northeastern Tibetan Plateau.

Źródło:

Dendrobiology; 2019, 81; 14-21
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 78.

Tytuł:

Failure simulation of Babar dam – Algeria and its impact on the valley downstream section

Autorzy:

Gaagai, Aissam
Boudoukha, Abderrahmane
Benaabidate, Lahcen

Powiązania:

https://bibliotekanauki.pl/articles/292897.pdf

Data publikacji:

2020

Wydawca:

Instytut Technologiczno-Przyrodniczy

Tematy:

dam
dam failure
Hec-Ras
sensitivity analysis
simulation

Opis:

A failure analysis of Babar dam on the El Arab River was performed to highlight the impact of flood wave and velocities on the four villages downstream of the dam; Hella, Khérenne, Chebla and El Oueldja. The simulation of wave propagation along the El Arab River under several scenarios was performed by the hydraulic HEC-RAS model. This model is dedicated to the description of floods at the dam following a breach in the dike. The main factors considered in this simulation include the level of flood water, the flood hydrograph, and the typical scenario for this breach. The flood risk analysis revealed that the maximum of flood wave flow registered at the breach is (Q_max = 9253.02 m³∙s^{–1), and is beginning to mitigate downstream of the dam along the El Arab River where it reached at the last village with a low flow (Q = 1110.64 m3∙s–1). This simulation allowed drawing the risk map which showed the areas threatened by flood wave resulting from a total failure of the work, and consequently required a plan of security measures to moderate as much as possible the consequences of floods. A sensitivity analysis was conducted to approach the parameters of impact of the breach on the dam failure scenario. It was confirmed that these parameters as formulation time, breach width and side slope have a great influence on the dam failure scenario with the four adjustments (±20 and ±50).}

Źródło:

Journal of Water and Land Development; 2020, 44; 75-89
1429-7426
2083-4535

Pojawia się w:

Journal of Water and Land Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 79.

Tytuł:

Validity test of the IPD-Work consortium approach for creating comparable job strain groups between Job Content Questionnaire and Demand-Control Questionnaire

Autorzy:

Choi, Bongkyoo
Ko, Sangbaek
Ostergren, Per-Olof

Powiązania:

https://bibliotekanauki.pl/articles/2177398.pdf

Data publikacji:

2015-03-26

Wydawca:

Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi

Tematy:

epidemiological studies
Malmö
sensitivity
specificity
scoring methods
misclassification

Opis:

Objectives This study aims to test the validity of the IPD-Work Consortium approach for creating comparable job strain groups between the Job Content Questionnaire (JCQ) and the Demand-Control Questionnaire (DCQ). Material and Methods A random population sample (N = 682) of all middle-aged Malmö males and females was given a questionnaire with the 14-item JCQ and 11-item DCQ for the job control and job demands. The JCQ job control and job demands scores were calculated in 3 different ways: using the 14-item JCQ standard scale formulas (method 1); dropping 3 job control items and using the 11-item JCQ standard scale formulas with additional scale weights (method 2); and the approach of the IPD Group (method 3), dropping 3 job control items, but using the simple 11-item summation-based scale formulas. The high job strain was defined as a combination of high demands and low control. Results Between the 2 questionnaires, false negatives for the high job strain were much greater than false positives (37–49% vs. 7–13%). When the method 3 was applied, the sensitivity of the JCQ for the high job strain against the DCQ was lowest (0.51 vs. 0.60–0.63 when the methods 1 and 2 were applied), although the specificity was highest (0.93 vs. 0.87–0.89 when the methods 1 and 2 were applied). The prevalence of the high job strain with the JCQ (the method 3 was applied) was considerably lower (4–7%) than with the JCQ (the methods 1 and 2 were applied) and the DCQ. The number of congruent cases for the high job strain between the 2 questionnaires was smallest when the method 3 was applied. Conclusions The IPD-Work Consortium approach showed 2 major weaknesses to be used for epidemiological studies on the high job strain and health outcomes as compared to the standard JCQ methods: the greater misclassification of the high job strain and lower prevalence of the high job strain.

Źródło:

International Journal of Occupational Medicine and Environmental Health; 2015, 28, 2; 321-333
1232-1087
1896-494X

Pojawia się w:

International Journal of Occupational Medicine and Environmental Health

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 80.

Tytuł:

"Hearing Their Voices": Exploring Femicide among Migrants and Culture Minorities

Autorzy:

Nudelman, Anita
Boira, Santiago
Tsomaia, Tina Tiko
Balica, Ecaterina
Tabagua, Sopio

Powiązania:

https://bibliotekanauki.pl/articles/2107586.pdf

Data publikacji:

2017-07-31

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

Femicide Survivors
Immigrants
Qualitative Interview Guide
Culture-Sensitivity

Opis:

The rates of domestic violence and femicide in various European countries tend to be higher among migrant women, as well as among women from cultural minorities. This led to the development of a culture and gender-sensitive in-depth interview guide aimed at better understanding this phenomenon, as well as identifying specific aspects of the experience of violence in a foreign scenario. The first stage was developing a draft interview guide based on the most important issues addressed in the professional literature, relating both to victims of domestic violence and to survivors of femicide and their families. This has allowed others to “hear their voices” and to understand their own perspectives, which are especially important considering the steady increase of this phenomenon around the world. The second phase was a pilot study among immigrant femicide survivors: first in Spain, later in Romania, and finally in Georgia, focusing on internally displaced people. The last step was analyzing the feedback from the different countries, which led to a refined and improved version of the interview guide. Thus, the current paper presents an ongoing process leading to a standardized interview guide, which could be adapted to local socio-cultural contexts, enabling comparative studies across Europe.

Źródło:

Qualitative Sociology Review; 2017, 13, 3; 48-68
1733-8077

Pojawia się w:

Qualitative Sociology Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 81.

Tytuł:

Simulation and sensitivity analysis for biodiesel production in a reactive distillation column

Autorzy:

Agarwal, M.
Singh, K.
Chaurasia, S. P.

Powiązania:

https://bibliotekanauki.pl/articles/779118.pdf

Data publikacji:

2012

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

biodiesel
reactive distillation
modeling
simulation
transesterification
sensitivity analysis

Opis:

The conventional process for biodiesel production by transesterification is still expensive due to a need of high excess of alcohol required and its recovery by distillation. The use of a reactive distillation process can reduce the amount of alcohol in the feed stream as it works on a simultaneous reaction and separation. In the present study, a mathematical model has been developed for biodiesel production from triglycerides in a reactive distillation column, which has been validated with the reported data and CHEMCAD results. The effects of process parameters such as methanol to oil feed ratio, feed temperature, and reaction time have been investigated. The sensitivity analysis shows that yield of ester increases with methanol to oil ratio and number of stages, however, it decreases with fl ow rate. The MATLAB simulated results show that methanol to oil molar ratio of 5:1 produces 90% (by wt.) of methyl ester in a residence time of 4.7 minutes.

Źródło:

Polish Journal of Chemical Technology; 2012, 14, 3; 59-65
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 82.

Tytuł:

Sensitivity to antimicrobials of faecal Buttiauxella spp. from roe and red deer (Capreolus capreolus, Cervus elaphus) detected with MALDI-TOF mass spectrometry

Autorzy:

Lauková, A.
Pogány Simonová, M.
Kubašová, I.
Miltko, R.
Bełżecki, G.
Strompfová, V.

Powiązania:

https://bibliotekanauki.pl/articles/2087696.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Buttiauxella
roe deer
red deer
antibiotics
sensitivity
enterocins

Źródło:

Polish Journal of Veterinary Sciences; 2018, 21, 3; 543-547
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 83.

Tytuł:

Reinforcement sensitivity and jealousy in romantic relationships

Autorzy:

Moroń, Marcin
Grzywnowicz, Paulina
Łojan, Adam
Szyszłow, Marlena
Warlewska, Ewa

Powiązania:

https://bibliotekanauki.pl/articles/2127818.pdf

Data publikacji:

2019-04-05

Wydawca:

Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL

Tematy:

reinforcement sensitivity
jealousy
commitment
approach-avoidance social goals

Opis:

Jealousy is an adaptive emotional reaction that signals threat to the current romantic relationship and motivates the person to protect that relationship. Given that jealousy is a mechanism of sensitivity to signals of relational threat, it was predicted that neurobiological systems of fight-flight- -freeze (FFFS) and behavioral inhibition (BIS) would be positively correlated with emotional jealousy. It was also predicted that these associations would be stronger in individuals highly committed to their relationships. We examined the mediatory role of approach-avoidance social goals in relations between BIS, FFFS, behavioral activation system (BAS), and the experience of jealousy. The present study was conducted on a group of 217 participants aged between 17 and 36 years, involved in romantic relationships. The results showed that the sensitivity of BIS and the freeze system (FFFS) was correlated positively with the intensity of jealousy. Commitment appeared to moderate the relations between FFFS and the intensity of jealousy. Avoidance social goals mediated the relation between BIS and the intensity of jealousy.

Źródło:

Roczniki Psychologiczne; 2016, 19, 1; 191-202
1507-7888

Pojawia się w:

Roczniki Psychologiczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 84.

Tytuł:

Sensitivity analysis of signaling pathway models based on discrete-time measurements

Autorzy:

Kardynska, M.
Smieja, J.

Powiązania:

https://bibliotekanauki.pl/articles/229721.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

sensitivity analysis
signaling pathways
measurement uncertainty
discretetime measurements

Opis:

The paper is focused on sensitivity analysis of large-scale models of biological systems that describe dynamics of the so called signaling pathways. These systems are continuous in time but their models are based on discrete-time measurements. Therefore, if sensitivity analysis is used as a tool supporting model development and evaluation of its quality, it should take this fact into account. Such models are usually very complex and include many parameters difficult to estimate in an experimental way. Changes of many of those parameters have little effect on model dynamics, and therefore they are called sloppy. In contrast, other parameters, when changed, lead to substantial changes in model responses and these are called stiff parameters. While this is a well-known fact, and there are methods to discern sloppy parameters from the stiff ones, they have not been utilized, so far, to create parameter rankings and quantify the influence of single parameter changes on system time responses. These single parameter changes are particularly important in analysis of signalling pathways, because they may pinpoint parameters, associated with the processes to be targeted at the molecular level in laboratory experiments. In the paper we present a new, original method of creating parameter rankings, based on an Hessian of a cost function which describes the fit of the model to a discrete experimental data. Its application is explained with simple dynamical systems, representing two typical dynamics exhibited by the signaling pathways.

Źródło:

Archives of Control Sciences; 2017, 27, 2; 239-250
1230-2384

Pojawia się w:

Archives of Control Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 85.

Tytuł:

Sensitivity Analysis of the Nasgro Equation Based on the PZL-130 TC-II Orlik Trainer Aircraft Full Scale Fatigue Test

Autorzy:

Reymer, Piotr
Leski, Andrzej
Kurdelski, Marcin

Powiązania:

https://bibliotekanauki.pl/articles/24201173.pdf

Data publikacji:

2022

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

sensitivity analysis
crack propagation
full scale fatigue test

Opis:

The study investigates the sensitivity of numerical crack propagation estimations based on the Nasgro equation. The equation is widely used for crack propagation calculations since it considers the whole range of crack propagation speed from threshold to critical values of stress intensity factor range (∆K). The presented investigation is based on the actual results of the full scale fatigue test (FSFT) of the PZL-130 ‘Orlik’ TC-II aircraft. We provide a brief description of the test and the general approach followed in crack propagation estimations originally carried out after the test. The obtained results are verified in terms of variation of the input data. Overall results are compared and discussed.

Źródło:

Fatigue of Aircraft Structures; 2022, 14; 8--17
2081-7738
2300-7591

Pojawia się w:

Fatigue of Aircraft Structures

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 86.

Tytuł:

Clinical Evaluation and Instrumental Diagnostics in Acute Acromioclavicular Joint Dislocation

Autorzy:

Bezruchenko, Serhii
Dolhopolov, Oleksii
Yarova, Maryna
Luchko, Roman
Mazevych, Vadim

Powiązania:

https://bibliotekanauki.pl/articles/28408830.pdf

Data publikacji:

2022-03-02

Wydawca:

Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica

Tematy:

diagnostics
sensitivity and specificity
acromioclavicular joint
MRI
outcomes

Opis:

Background. The aim was to improve the diagnosis of acromioclavicular joint dislocation by studying the capabilities and characteristics of clinical and instrumental diagnostic methods. The idea is expressed that modern clinical and instrumental diagnostic methods comprise a large number of techniques, but no single algorithm for diagnosing injury to the AC joint has been developed. A gold standard for investigating and diagnosing acute AC joint dislocation does not currently exist. Materials and Methods. A retrospective study of the characteristics and capabilities of clinical and instrumental diagnostic methods was performed in 152 patients with traumatic shoulder pathology. The patients were divided into two groups: Group I of 102 patients (67%) with acromioclavicular joint dislocation type III-VI according to Rockwood classification and Group II of 50 patients (33%) with a partial tear of the rotator cuff. Clinical and instrumental examinations involved specific provocative tests; the radiological diagnostics comprised conventional radiographs with the Zanca, axillary and Alexander views, and CT, MRI, and ultrasound examinations. Results. The characterization of examination methods was based on the records of patients in Group I and II. The most sensitive clinical test to establish Rockwood type V of acromioclavicular joint dislocation was the Paxinos test (91%). The lowest sensitivity across the tests used was observed with the active compression test to diagnose type IV of dislocation (50%). As regards the X-ray examination, the axial view was 100% sensitive for detecting type IV and VI AC joint dislocation. The Zanca view is highly sensitive for patients with Rockwood type V and Alexander view for Rockwood type III and V dislocations. The accuracy of ultrasound work-up in Group I was 95%, with 96% sensitivity and 93% specificity, while MRI accuracy was 97%, with 96% sensitivity and 98% specificity, and CT accuracy was 81%, with 83% sensitivity and 75% specificity. Conclusions. 1. Determination of the sensitivity and specificity of the X-ray examination revealed the absence of a 100% effective X-ray view for type III and V AC joint dislocation. 2. The accuracy and sensitivity of the ultrasound, MRI, and CT examinations are high. 3. There is currently no consensus on a protocol to view acute AC joint injuries. 4. Complete and timely early diagnosis of acromioclavicular dislocation allows for a differentiated approach to surgical treatment tactics, preventing possible complications and restoring the function of the injured shoulder joint to the fullest extent.

Źródło:

Ortopedia Traumatologia Rehabilitacja; 2022, 24(1); 1-12
1509-3492
2084-4336

Pojawia się w:

Ortopedia Traumatologia Rehabilitacja

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 87.

Tytuł:

External wall technological solutions for carbon zero kindergartens in Italy

Autorzy:

Ciacci, Cecilia
Bazzocchi, Frida
Di Naso, Vincenzo

Powiązania:

https://bibliotekanauki.pl/chapters/31234004.pdf

Data publikacji:

2020

Wydawca:

Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej

Tematy:

external envelope
carbon-zero
sensitivity analysis
kindergartens
sustainability

Opis:

For the construction of a carbon zero kindergartens, it is necessary to choose a proper technological solution for the external wall and the material to be used for the insulation layer in the early stages of the design process. Furthermore, in the context of “2030 climate & energy framework” and “2050 low-carbon economy”, from the beginning of the building design, it is fundamental to try to identify the elements that significantly influence energy performance to reduce building energy needs. The main aim of the presented study is to analyse five different technological solutions for an external wall combined with four different materials for the insulation layer. The solutions will be used in a new typological model for a kindergarten and analysed and compared with respect to both environmental impact and energy performance. Results point out that all the technological solutions proposed are valid alternatives to build a carbon-zero kindergarten in Italy. Furthermore, for completeness, a sensitivity analysis was carried out to understand the influence on energy demand of different factors such as, for instance, the type of wall technological solution, the thickness of insulation for wall and roof and the type of solar shading considering different climate zones in Italy.

Źródło:

Innovations – Sustainability – Modernity – Openness. Energy; 45-65
9788366391291

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 88.

Tytuł:

Are companies managed by overconfident CEO financially constraint? Investment-cash flow sensitivity approach

Autorzy:

Bukalska, Elżbieta

Powiązania:

https://bibliotekanauki.pl/articles/22444429.pdf

Data publikacji:

2020

Wydawca:

Instytut Badań Gospodarczych

Tematy:

CEO overconfidence
investment-cash flow sensitivity
financial constraints

Opis:

Research background: Overconfidence is one of the biases and fallacies that affect a cognitive process. Indeed, overconfidence has some serious consequences even in corporate finance. The literature is not consistent as for the impact of overconfidence on investment and financing decisions. Additionally, we include the issue of financial constraints to our analysis as investment-cash flow sensitivity (ICFS) is perceived as the measure of financial constraints. Purpose of the article: The aim of this paper is to test investment-cash flow sensitivity and financial constraints under managerial overconfidence. We think that companies managed by overconfident managers show a higher relation between cash flows and investment and demonstrate bigger financial constraints. Methods: In this paper, we test investment-cash flow sensitivity and financial constraints under CEO overconfidence among panel data of Polish private firms. We collect the unique sample of 145 non-listed companies by surveying the CEOs on their overconfidence. We collect the financial data of surveyed companies covering the 2010?2016 period. Total number of observations is 1015. Findings & Value added: First, we find a positive and higher relation between the investment-cash flow sensitivity for companies managed by overconfident managers which is in line with recent research. As for the financial constraints we find lower level of financial constraints among the companies managed by overconfident man-agers. This might be evidence that despite having lower financial constraints the companies managed by overconfident managers intentionally choose internal funds as the main source of financing and refrain from using external funds. To the best of our knowledge, this paper is the first empirical study for Polish companies on the relation between CEO overconfidence and financial decisions.

Źródło:

Equilibrium. Quarterly Journal of Economics and Economic Policy; 2020, 15, 1; 107-131
1689-765X
2353-3293

Pojawia się w:

Equilibrium. Quarterly Journal of Economics and Economic Policy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 89.

Tytuł:

MOLPTOL – a software package for sensitivity analysis in MOLP

Autorzy:

Sitarz, Sebastian
Botor, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/2027992.pdf

Data publikacji:

2021

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Computer software
Multi-objective linear programming
Sensitivity analysis

Opis:

The paper introduces a new software package, MOLPTOL, for sensitivity analysis in multi-objective linear programming. In this application, which is available for free of charge on the web page (https:// sites.google.com/view/molptol), the tolerance approach as a measure of sensitivity is used. The motivation for creating MOLPTOL is the lack of such tools to date. MOLPTOL is novel for multi-criteria decision-making methods based on sensitivity analysis. The paper presents some new computational methods for obtaining the supremal tolerances as well.

Źródło:

Multiple Criteria Decision Making; 2021, 16; 140-152
2084-1531

Pojawia się w:

Multiple Criteria Decision Making

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 90.

Tytuł:

Land Sensitivity Analysis of Degradation using MEDALUS model : Case Study of Deliblato Sands, Serbia

Autorzy:

Kadović, R.
Bohajar, Y. A. M.
Perović, V.
Simić, S. B.
Todosijević, M.
Tošić, S.
Anđelić, M.
Mlađan, D.
Dovezenski, U.

Powiązania:

https://bibliotekanauki.pl/articles/204632.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Deliblato sands
land degradation
sensitivity
MEDALUS
GIS mapping

Opis:

This paper studies the assessment of sensitivity to land degradation of Deliblato sands (the northern part of Serbia), as a special nature reserve. Sandy soils of Deliblato sands are highly sensitive to degradation (given their fragility), while the system of land use is regulated according to the law, consisting of three zones under protection. Based on the MEDALUS approach and the characteristics of the study area, four main factors were considered for evaluation: soil, climate, vegetation and management. Several indicators affecting the quality of each factor were identified. Each indicator was quantified according to its quality and given a weighting of between 1.0 and 2.0. ArcGIS 9 was utilized to analyze and prepare the layers of quality maps, using the geometric mean to integrate the individual indicator map. In turn, the geometric mean of all four quality indices was used to generate sensitivity of land degradation status map. Results showed that 56.26% of the area is classified as critical; 43.18% as fragile; 0.55% as potentially affected and 0.01% as not affected by degradation. The values of vegetation quality index, expressed as coverage, diversity of vegetation functions and management policy during the protection regime are clearly represented through correlation coefficient (0.87 and 0.47).

Źródło:

Archives of Environmental Protection; 2016, 42, 4; 114-124
2083-4772
2083-4810

Pojawia się w:

Archives of Environmental Protection

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 91.

Tytuł:

Exergetic analysis of the chitosan-based treatment process for removing polycyclic aromatic hydrocarbons from seawater and sediments

Autorzy:

Cantillo-Figueroa, Maileth
Moreno-Sader, Kariana A.
Gonzalez-Delgado, Angel D.

Powiązania:

https://bibliotekanauki.pl/articles/1844377.pdf

Data publikacji:

2021

Wydawca:

Instytut Technologiczno-Przyrodniczy

Tematy:

efficiency
exergy
polycyclic aromatic hydrocarbons
PAHs
sensitivity analysis

Opis:

The Bay of Cartagena (Colombia) is a site of commercial interest owing to its privileged location for maritime operations; however, the discharge of wastewaters from industrial activities and domestic sewage are affecting the water quality, and consequently, the biodiversity of coastal ecosystems. The polycyclic aromatic hydrocarbons (PAHs) are found in sediments and water of main ports, causing severe damage to the ecosystem. Thus, alternatives for the treatment of the Bay of Cartagena’s water and sediments are needed. In this paper, we performed the exergetic analysis of removing PAHs from water and sediments in the Bay of Cartagena using an adsorption-based treatment process with chitosan microbeads and magnetic nanoparticles (CM-TiO2/Fe3O4). The outcomes of exergy of utilities, irreversibilities and exergy losses were calculated using process data and exergy of substances. The Aspen plus V10 software provided the physical exergies, while chemical exergies were gathered from the literature. Overall exergy efficiency of 0.3% was determined for the seawater and sediment treatment facility. A sensitivity analysis was performed to identify the impact and viability of different design alternatives.

Źródło:

Journal of Water and Land Development; 2021, 48; 88-93
1429-7426
2083-4535

Pojawia się w:

Journal of Water and Land Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 92.

Tytuł:

Sensitivity analysis of a fuzzy expert system for modelling dependencies in human operators’ emergency tasks

Autorzy:

Zio, E.
Baraldi, P.
Librizzi, M.
Podofillini, L.
Dang, H. V.

Powiązania:

https://bibliotekanauki.pl/articles/2069589.pdf

Data publikacji:

2007

Wydawca:

Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności

Tematy:

human reliability analysis
fuzzy expert system
sensitivity analysis

Opis:

This paper analyzes the behaviour of a fuzzy expert system for evaluating the dependence among successive operator actions, through a sensitivity analysis on the fuzzy input partitioning and assessment. Preliminary results are presented with respect to a case study concerning two successive tasks of an emergency procedure in a nuclear reactor. Work is in progress to perform a thorough sensitivity analysis to generalize the results obtained.

Źródło:

Journal of Polish Safety and Reliability Association; 2007, 2; 379--389
2084-5316

Pojawia się w:

Journal of Polish Safety and Reliability Association

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 93.

Tytuł:

Optimal heat distributions by a gradient-based shape optimization method

Autorzy:

Belhachmi, Z.
Meftahi, B.
Meftahi, H.

Powiązania:

https://bibliotekanauki.pl/articles/206300.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

heat conduction
shape optimization
sensitivity analysis
minimax differentiability

Opis:

In this paper, we consider the problem of locating coated inclusions in a 2D dimensional conductor material in order to obtain a suitable thermal environment. The mathematical model is described by elliptic partial differential equation with linear boundary condition, including heat transfer coefficient. A shape optimization problem is formulated by introducing a cost functional to solve the problem under consideration. The shape sensitivity analysis is rigorously performed for the problem by means of a Lagrangian formulation. The optimization problem is solved by means of gradient-based strategy and numerical experiments are carried out to demonstrate the feasibility of the approach.

Źródło:

Control and Cybernetics; 2018, 47, 1; 33-53
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 94.

Tytuł:

Modeling of the fascia-mesh system and sensitivity analysis of a junction force after a laparoscopic ventral hernia repair
Modelowanie układu powięź-siatka i analiza wrażliwości siły połączenia po laparoskopowej operacji przepukliny brzusznej

Autorzy:

Szymczak, C.
Lubowiecka, I.
Tomaszewska, A.
Śmietański, M.

Powiązania:

https://bibliotekanauki.pl/articles/279958.pdf

Data publikacji:

2010

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

biomechanics
ventral hernia repair
cable model
sensitivity analysis

Opis:

In the paper, a simple model of the fascia-mesh system is considered to assess the junction force after a laparoscopic hernia repair. The aim of this study is to develop a cable model of the system in order to find the junction force and to distinguish the most important parameters affecting the system junction force. The cable is subjected to a pressure in the abdominal cavity and displacements of the cable edges caused by bends of the patient body. The attention is paid to the junction force sensitivity analysis with respect to initial tension of the mesh, its length and elasticity as well as fascia flexibility. All these parameters are crucial for ventral hernia repair safety. Finally, some concluding remarks important for practicing surgeons and for further more advanced study using two dimensional fascia-mesh models are presented.
W pracy rozpatrywano prosty model układu powięź-siatka do oszacowania siły połączenia siatki z powięzią po laparoskopowej operacji przepukliny brzusznej. Celem pracy jest zastosowanie modelu cięgna do wyznaczenia siły połączenia tego układu oraz do wyznaczenia najważniejszych parametrów mających wpływ na siłę połączenia implantu z powięzią. W tym celu zastosowano analizę wrażliwości siły połączenia względem wariacji początkowej siły rozciągającej siatki, jej długości i modułu sprężystości oraz podatności powięzi. Cięgno jest obciążone ciśnieniem wewnątrz brzusznym oraz przemieszczeniami jego końców wywołanymi skłonami ciała pacjenta. Wszystkie podane wyżej parametry są istotne dla bezpieczeństwa operacji przepukliny. W wyniku pracy sformułowano pewne wnioski ważne dla chirurgów oraz dla dalszych bardziej zaawansowanych badań z zastosowaniem modeli dwuwymiarowych układu powięź-siatka.

Źródło:

Journal of Theoretical and Applied Mechanics; 2010, 48, 4; 933-950
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 95.

Tytuł:

Modeling of thermal processes proceeding in a 1D domain of crystalline solids using the lattice Boltzmann method with an interval source function

Autorzy:

Piasecka-Belkhayat, A.
Korczak, A.

Powiązania:

https://bibliotekanauki.pl/articles/281185.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

lattice Boltzmann method
directed interval arithmetics
sensitivity analysis

Opis:

The interval lattice Boltzmann method (ILBM) with an uncertainly defined internal heat source function is used to simulate heat transfer in a thin silicone film. The solution to the interval Boltzmann transport equations has been obtained taking into account the rules of directed interval arithmetics. A similar analysis has been done using the sensitivity model where the Boltzmann transport equations and boundary-initial conditions have been differentiated with respect to the no-interval heat source value. The knowledge of the sensitivity function distribution and the application of the Taylor formula allow one to find the border solutions of the problem analyzed, which (to some extent) correspond to the solution obtained under the assumption of the uncertainly defined source function. In the final part of the paper, numerical computations obtained for both methods are presented.

Źródło:

Journal of Theoretical and Applied Mechanics; 2017, 55, 1; 167-175
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 96.

Tytuł:

Decreasing the Friction Sensitivity of TATP, DADP and HMTD

Autorzy:

Matyáš, R.
Šelešovský, J.
Musil, T.

Powiązania:

https://bibliotekanauki.pl/articles/358197.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

primary explosive
TATP
HMTD
sensitivity to friction
desensitization

Opis:

The infuence of water and WD-40 oil content on the sensitivity to friction of three primary explosives, triacetone triperoxide (TATP), diacetone diperoxide (DADP) and hexamethylene triperoxide diamine (HMTD), has been investigated. All of these explosives belong to a group of improvised explosives. The possibility of desensitization of these explosives by the addition of other substances was studied. Sensitivity curves were obtained for the solid organic peroxides with various liquid contents. The sensitivity decreases signifcantly with only a small quantity of liquid − up to about 20% of the liquid. Further increase in the liquid content has a negligible further impact on the sensitivity to friction. Water and WD-40 oil were compared as desensitizating agents.

Źródło:

Central European Journal of Energetic Materials; 2013, 10, 2; 263-275
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 97.

Tytuł:

A Novel Approach for the Prediction of Electric Spark Sensitivity of Polynitroarenes Based on the Measured Data from a New Instrument

Autorzy:

Keshavarz, Mohammad Hossein

Powiązania:

https://bibliotekanauki.pl/articles/358523.pdf

Data publikacji:

2019

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

electric spark sensitivity
RDAD
ESZ KTTV
polynitroarene
correlation

Opis:

This paper introduces two novel correlations for the assessment of the electric spark sensitivity of polynitroarenes based on a new instrument, marked as ESZ KTTV, which gives more reliable experimental data than a previous old system, marked as RDAD. The first correlation used the number of oxygen and chlorine atoms, as well as a correcting function that increases the predicted results based on elemental composition. Since the relationship between the measurements from ESZ KTTV and RDAD is not unequivocal, a second correlation can convert the reported data based on the RDAD system to the ESZ KTTV instrument. The second correlation can be applied to many available predictive methods, and provides the estimated results based on the RDAD instrument. For 34 polynitroarenes, where experimental values from both the RDAD and the ESZ KTTV instruments were available, the values of the root-mean-square deviation (RMSD) for the first and second correlations were 43.9 mJ and 36.0 mJ, respectively. Thus, due to the larger uncertainty in the measured data of the old RDAD system, both correlations provide more reliable data based on the ESZ KTTV instrument.

Źródło:

Central European Journal of Energetic Materials; 2019, 16, 1; 65-76
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 98.

Tytuł:

An Insensitive Booster Explosive: DAAF Surface-coated with Viton A

Autorzy:

Li, X.
Wu, B.
Liu, S.
An, C.
Wang, J.

Powiązania:

https://bibliotekanauki.pl/articles/358841.pdf

Data publikacji:

2018

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

DAAF
refinement
surface-coated
thermal analysis
impact sensitivity

Opis:

3,3’-Diamino-4,4’-azoxyfurazan (DAAF) is the principal component of an insensitive booster explosive; refined DAAF and DAAF surface-coated with Viton A were prepared. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and differential scanning calorimetry (DSC) were employed to characterize the morphology, composition, and thermal decomposition of these samples. The impact sensitivity and theoretical detonation velocity of DAAF-based composites were also measured and analyzed. The results showed that DAAF surface-coated with Viton A was successfully obtained, and the impact sensitivity of DAAF/Viton A composites was much lower than that of crude DAAF. In addition, DAAF/Viton A composites exhibited better thermal stability compared to crude DAAF and refined DAAF. The theoretical detonation velocity of DAAF/Viton A composites and TATB/Viton A composites are roughly the same. Therefore, there is still great potential for DAAF to be used as the main explosive component of a booster explosive.

Źródło:

Central European Journal of Energetic Materials; 2018, 15, 3; 445-455
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 99.

Tytuł:

Analiza wrażliwości powłoki walcowej obciążonej dwiema przeciwnie skierowanymi siłami skupionymi
Sensitivity analysis of a cylindrical shell loaded by two concentrated forces directed in opposite ways

Autorzy:

Kubiak, H.
Czarniawski, T.

Powiązania:

https://bibliotekanauki.pl/articles/152690.pdf

Data publikacji:

2010

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

wrażliwość
powłoka walcowa
przemieszczenie
sensitivity
cylindrical shell
displacement

Opis:

W artykule przedstawiono analizę wrażliwości powłoki cylindrycznej obciążonej parą, przeciwnie skierowanych sił skupio-nych. Przedstawiono obliczenie przemieszczenia powłoki, jej wrażliwość na zmianę promienia krzywizny i grubości powłoki. Wrażliwość została obliczona metodą różniczkowania bezpośredniego. Obliczenia przeprowadzono dla różnych grubości i różnych promieni powłoki. W wyniku przeprowadzonych obliczeń wyciągnięto następujące wnioski: wrażliwość przemieszczenia rośnie wraz ze wzrostem promienia i maleje ze wzrostem grubości.
The article presents the sensitivity analysis of a cylindrical shell loaded by two concentrated forces directed in the opposite ways. The calculations present the shell displacement, its sensitivity to the change of a curvature radius and shell thickness. The sensitivity was estimated by means of a direct differentiation method. The direct differentiation method was conducted on the strength of solution shell by means of double trigonometric series. Authors took the solution of displacement from Łukasiewicz book [4]. In this paper three examples are presented. The calculations were carried out for different thickness and for different radii of the shell. As a result of calculations, the following conclusions were drawn: displacement sensitivity increases with the increasing radius and decreases with the increasing thickness, sensitivity to the change of shell thickness is bigger than sensitivity to the change of a curvature radius. Order of magnitude of sensitivity depends on the proportion shell thickness to curvature radius.

Źródło:

Pomiary Automatyka Kontrola; 2010, R. 56, nr 8, 8; 934-937
0032-4140

Pojawia się w:

Pomiary Automatyka Kontrola

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 100.

Tytuł:

Dynamic analysis of embedded chains in mooring line for fish cage system

Autorzy:

Hou, H. M.
Dong, G. H.
Xu, T. J.
Zhao, Y. P.
Bi, C. W.

Powiązania:

https://bibliotekanauki.pl/articles/259892.pdf

Data publikacji:

2018

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

embedded chains
soil resistance
parameter sensitivity
dynamic analysis

Opis:

Investigation of the embedded chains in soil starts to play an important role in understanding the structural performance of mooring system, when the embedded anchors will be employed to sustain large loads with the gradually growth of installation depth of offshore aquaculture farm. The aim of this study is to investigate the dynamic response of mooring line considering the influence of embedded chains in clay soil for net cage system. Lumped-mass method is used to establish the numerical model for evaluating the performance of mooring line with embedded chains. To validate the numerical model, comparisons of numerical results with the analytical formulas and the experimental data are conducted. A good agreement of the profile and the tension response is obtained. Then, the effect of embedded chains on the static and dynamic response of mooring line is evaluated, and the dynamic behavior of mooring system considering embedded chains for net cage system is investigated. The results indicate that the soil resistance on embedded chains should be included to predict the mooring line development and the load on the embedded anchors in the numerical simulations. An appropriate safety factor should be included if employing the simplified model Case C at the initial design phase. And the effect of embedded chains on the holding capacity of embedded anchors in single-point mooring system for single net cage cannot be negligible during the design and operation phases. Consequently, it is profound to take into account the interaction of embedded chains and soil for accurately predicting the reliability of mooring system for fish cage.

Źródło:

Polish Maritime Research; 2018, 4; 83-97
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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