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Tytuł:
Cumulative Industrial Noise Impact on the Environment
Autorzy:
Wszołek, T.
Powiązania:
https://bibliotekanauki.pl/articles/178090.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
industrial noise
cumulative impact
noise indicators
cumulative noise levels
Opis:
The paper presents basic legal conditions, applicable to the calculation of cumulative noise levels in the environment with indication mainly on lack of detailed regulations both in formal and methodological approach for evaluating those levels. The paper is focused on methodological approach with the emphasis on analysis of existing case studies in the industry. The main subject of the analysis is the cumulation of industrial noise sources: newly designed and existing ones, together with a proposal of accumulate other types of the noise. Evaluation of cumulative noise levels for new (designed) objects is realised by computational methods, and for existing objects, by measurements or by combination of measurement and computational methods. It is assumed that the cumulative level is an energetic sum of the rating levels for all installations and it will not exceed the limit value in a given place. For the cumulation of different noise sources, the weighting for criterion values of these sources will be applied in aggregation.
Źródło:
Archives of Acoustics; 2017, 42, 2; 169-174
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research results on precursor of the tandem shaped charge projectile model
Badania prekursorów modelu tandemowego pocisku kumulacyjnego
Autorzy:
Wiśniewski, A.
Podgórzak, P.
Powiązania:
https://bibliotekanauki.pl/articles/235923.pdf
Data publikacji:
2005
Wydawca:
Wojskowy Instytut Techniczny Uzbrojenia
Tematy:
pociski kumulkacyjne
missiles cumulative
Opis:
In the article the results of the research of different precursors of the model of tandem shaped charge projectile were presented. They were connected with the precursors with the different liners: semi-spherical, conical, in the shape of section “W” and in the shape of EFP type. The warheads were filled with hexogen, hexoflen, octoflen and low-sensitive plastic explosive (LSPE).The destruction ability of reactive armour with the use of these warheads were tested. During the tests the mechanical destruction of reactive armours, the detonation of cassettes nd also only small traces of damage were observed. The analysis of possibility to use the tested warheads in tandem projectile was carried out.
W artykule przedstawiono wyniki badań różnych prekursorów modelu tandemowego pocisku kumulacyjnego. Dotyczyły one prekursorów z wkładką półsferyczną, stożkową, o przekroju „W” i EFP. Głowice elaborowane były heksogenem, heksoflenem, oktoflenem oraz niskowrażliwym plastycznym materiałem wybuchowym (PMW). Sprawdzano zdolność niszczenia pancerza reaktywnego z użyciem tych głowic. Podczas badań obserwowano mechaniczne niszczenie kaset reaktywnych, detonacje kaset, a także zaledwie niewielkie ślady uszkodzenia. Dokonano analizy możliwości zastosowania testowanych głowic w pocisku tandemowym.
Źródło:
Problemy Techniki Uzbrojenia; 2005, R. 34, z. 94; 31-38
1230-3801
Pojawia się w:
Problemy Techniki Uzbrojenia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gloss on the judgement of the Supreme Court of 28 February 2023, I KZP 13/22 (expressing approval)
Autorzy:
Krajnik, Szymon
Powiązania:
https://bibliotekanauki.pl/articles/25806663.pdf
Data publikacji:
2023
Wydawca:
Uczelnia Łazarskiego. Oficyna Wydawnicza
Tematy:
extradition
rule of speciality
European Convention on Extradition
cumulative sentence
cumulative penalty
Opis:
The present gloss refers to the thesis and considerations expressed in the Supreme Court judgement of 28 February 2023, I KZP 13/22, concerning the exception to the rule of speciality stipulated in Article 14(1)(b) of the European Convention on Extradition. The author presents arguments concerning the broad international legal context of the analysed regulation, which develops and confirms the accuracy of the Supreme Court’s stance on a broader than lexical interpretation of the term ‘final discharge’. Moreover, the paper discusses the nature of the exception in question in the light of the standard of protection laid down in Article 52(4) of the Constitution of the Republic of Poland.
Źródło:
Ius Novum; 2023, 17, 4 ENG; 125-133
1897-5577
Pojawia się w:
Ius Novum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonlinear Fatigue Damage Accumulation
Autorzy:
Dębski, D. K.
Powiązania:
https://bibliotekanauki.pl/articles/97967.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
cumulative fatigue damage
fatigue damage accumulation
cumulative damage rules
load interaction effects
fatigue life prediction
Opis:
One important element of any computational fatigue analysis is the adoption of a hypothesis of fatigue damage accumulation. The most commonly used is the hypothesis of linear accumulation of fatigue damage called the Palmgren-Miner hypothesis. This linear hypothesis does not take into account a factor of great importance: the mutual influence of consecutive fatigue load sequences on each other. In the presented paper, only two consecutive load sequences linked by mutual relations have been analyzed and the results of the analysis have been shown. A more complex form which takes into account the full load history would create complex formula difficult to use. Perhaps, we should go in this direction, especially that today we have enormous computing power at our disposal.
Źródło:
Fatigue of Aircraft Structures; 2015, 7; 18-23
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution Approximations for Cusum and Cusumsq Statistics
Autorzy:
Habibi, Reza
Powiązania:
https://bibliotekanauki.pl/articles/465719.pdf
Data publikacji:
2010
Wydawca:
Główny Urząd Statystyczny
Tematy:
Beta approximated
Change point
Cumulative sum
Cumulative sum of squares Multivariate normal
Response surface regression
Opis:
The cumulative sum (cusum) is an important statistics in testing for a change point. This paper is concerned with the distribution approximations to the cusum statistic under the null and alternative hypotheses. We also consider distribution approximations for the cumulative sum of squares (cusumsq) test statistics. Finally, a discussion section is given.
Źródło:
Statistics in Transition new series; 2010, 11, 3; 158-168
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Skuteczność cyfrowego uśredniania koherentnego przy nieidealnej synchronizacji
The efficiency of digital cumulative averaging at non ideal synchronization
Autorzy:
Domańska, A.
Powiązania:
https://bibliotekanauki.pl/articles/157900.pdf
Data publikacji:
2012
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
uśrednianie koherentne
synchronizacja
cumulative averaging
synchronization
Opis:
Artykuł przedstawia zagadnienie oceny wpływu nieidealnej synchronizacji na wartości próbek sygnału będącego rezultatem cyfrowego uśredniania koherentnego. Podano zależność określającą wariancję wartości sygnału po uśrednieniu, z powodu błędu synchronizacji. W przypadku sygnału sinusoidalnego, wariancja ta zależy od: wariancji błędu synchronizacji, amplitudy, relacji między częstotliwością sygnału i częstotliwością próbkowania oraz od liczby próbek. Przy niezerowym błędzie synchronizacji, uśrednianie koherentne redukując szum addytywny powoduje zniekształcenia chwilowych wartości sygnału będących wynikiem uśredniania.
Digital cumulative averaging (CAV) is a form of the digital filtration and belongs to the methods for noise reduction in repeatable signals. An advantage distinguishing CAV from the usual digital filtration is that it also causes noise reduction in the signal band. The CAV algorithm realizes two operations: synchronization of segments and coherence averaging of samples. The paper presents the problem of evaluating the influence of non ideal synchronization on the value of samples of the signal being the CAV result. If the synchronization error does not occur, CAV reducing the noise does not change the recovered signal value. For the non-zero synchronization error, CAV reducing the noise causes distortions of temporary values of this signal. The synchronization error influences the error of the sample value and, in consequence, the error of the CAV result. The CAV efficiency depends, in such a case, on the synchronization accuracy of the converted segments. Section 2 describes the system CAV structure. In Section 3 there is given the dependence defining the variance of the single sample and the sample obtained from CAV caused by the synchronization error. In the case of sinusoidal signals, the variance of the result (samples of the signal after CAV) due to the synchronization error depends on: the synchronization error variance, the amplitude, the relation between the signal frequency and the sampling frequency as well as the number of the averaged samples/ repetitions. One can determine the limit value of this variance.
Źródło:
Pomiary Automatyka Kontrola; 2012, R. 58, nr 9, 9; 782-784
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A mildew infection resistance study of winter barley varieties and their mixtures by the logistic model
Autorzy:
Bakinowska, E.
Tratwal, A.
Nowosad, K.
Bocianowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/2082786.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cumulative probabilities
powdery mildew
variety mixtures
Opis:
Biological diversity within a mixture field allows for better use of habitat and agro-tech- nical conditions by the mixtures, which can be seen by higher and more stable yields than varieties sown separately. Our studies were conducted in the growing seasons 2011/2012–2014/2015 as field experiments with four winter barley varieties (Bombaj, Gil, Gregor, Bażant) and three, two- and three-component mixtures (Bombaj/Gil, Bombaj/Gre- gor, Gil/Gregor/Bażant). Seven different chemical treatments with fungicides were applied. The aim of this study was to compare the different varieties of winter barley with their mix- tures for resistance to powdery mildew infection. To achieve this aim the logistic model for the analysis of data was used. Of the varieties under consideration, the best and the most re- sistant variety was Gregor, while the weakest and the most susceptible to diseases (powdery mildew) was Gil. This variety was also significantly weaker than any of the other mixtures taken into account. Moreover, it was so weak that when it was included in mixtures with other varieties, it weakened these mixtures as well.
Źródło:
Journal of Plant Protection Research; 2020, 60, 2; 207-214
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New Characteristics in the Assessment of Reliability of Machines and Devices
Autorzy:
Kopania, Gabriela
Kuczmaszewska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2023856.pdf
Data publikacji:
2021-12
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
reliability
damage intensity function
cumulative damage
Opis:
The aim of this work is to present new reliability characteristics expressed as functions of some variable expressing the measure of effective operation of a machine or a device. These characteristics can be used for both renewable and non-renewable objects. Their mathematical idea reflects the essence of already known characteristics, i.e. it expresses the probability of failure but expressed as a function of a variable, not necessarily identified with time.
Źródło:
Management and Production Engineering Review; 2021, 14, 4; 45-52
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ergonomic Risk Factors for Cumulative Trauma Disorders in VDU Operators
Autorzy:
Turhan, N.
Akat, C.
Akyuz, M.
Cakci, A.
Powiązania:
https://bibliotekanauki.pl/articles/89783.pdf
Data publikacji:
2008
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
VDU operators
cumulative trauma disorders
ergonomics
posture
Opis:
The objectives of this study were to investigate the rate of cumulative trauma disorders (CTDs) in the upper body and to describe the associations of such disorders with ergonomic parameters in a group of data entry operators. A total of 173 data entry operators volunteered to take part in the study. Questionnaires were used to investigate their medical history. Diagnoses of CTDs were made with clinical tests. A visual posture analysis of the workers and an ergonomic analysis of workstations and workload were used to reveal risk factors. Neck and shoulder pain, extensor tendonitis of the wrists and De Quervain’s disease were common in the study population. An assessment of risk factors showed that leaning wrists on the keyboard, hard keystrokes, extreme wrist joint and thumb positions and working in poor ergonomic design were correlated to pain and development of CTDs.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2008, 14, 4; 417-422
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of complex decision problems based on cumulative prospect theory
Autorzy:
Dudzińska-Baryła, R.
Powiązania:
https://bibliotekanauki.pl/articles/406332.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
cumulative prospect theory
complex decision problem
decision tree
Opis:
Complex risky decision problems involve sequences of decisions and random events. The choice at a given stage depends on the decisions taken in the previous stages, as well as on the realizations of the random events that occurred earlier. In the analysis of such situations, decision trees are used, and the criterion for choosing the optimal decision is to maximize the expected monetary value. Unfortunately, this approach often does not reflect the actual choices of individual decision makers. In descriptive decision theory, the criterion of maximizing the expected monetary value is replaced by a subjective valuation that takes into account the relative outcomes and their probabilities. This paper presents a proposal to use the principles of cumulative prospect theory to analyse complex decision problems. The concept of a certainty equivalent is used to make it possible to compare risky and non-risky alternatives.
Źródło:
Operations Research and Decisions; 2018, 28, 3; 5-16
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Data compression and clustering of one-third-octave spectra by acoustical colors
Autorzy:
Józwiak, R.
Nissen, I.
Listewnik, K.
Powiązania:
https://bibliotekanauki.pl/articles/332570.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
cumulative value
acoustical colors
hydroacoustic measurement
underwater communication
Opis:
This article presents a new approach for the data compression and clustering of one-third octave spectrum by using "acoustical colours". Using in-situ measurements by the IGLOO – sensor nodes it can show that this approach allows a clustering of the colors for a quick look classification. This is helpful using wireless acoustical transmissions with restricted transfer volume in underwater sensor networks without jamming their own measurements.
Źródło:
Hydroacoustics; 2017, 20; 85-92
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Word-final /ɔ̃/ in Greater Poland Polish: A Cumulative Context Effect?
Autorzy:
Kaźmierski, Kamil
Szlandrowicz, Marta
Powiązania:
https://bibliotekanauki.pl/articles/1368378.pdf
Data publikacji:
2020-12-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Polish
nasal vowels
cumulative context effect
corpus phonology
Opis:
An empirical corpus-based study of the likelihood of realizing the Polish nasal vowel /ɔ̃/ word-finally as [ɔm] (i.e. of 'nasal stopping') is presented. The goal was to verify whether the phenomenon exhibits a cumulative context effect, with words typically occurring in an environment favoring a particular phonetic variant showing higher rates of that variant regardless of environment. The results show that nasal stopping is more likely before stop-initial words than before words beginning in other sounds, if there is no intervening pause. Results with regard to the hypothesis that words typically followed by stops will show higher likelihood of nasal stopping, however, remain inconclusive.
Źródło:
Research in Language; 2020, 18, 4; 381-394
1731-7533
Pojawia się w:
Research in Language
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the valuations of alternatives based on cumulative prospect theory and almost stochastic dominance
Autorzy:
Michalska, E.
Dudzińska-Baryła, R.
Powiązania:
https://bibliotekanauki.pl/articles/406467.pdf
Data publikacji:
2012
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
cumulative prospect theory
almost stochastic dominance
decision analysis
Opis:
There are commonly accepted and objective decision rules, which are consistent with rationality, for example stochastic dominance rules. But, as can be seen in many research studies in behavioral economics, decision makers do not always act rationally. Rules based on cumulative prospect theory or almost stochastic dominance are relatively new tools which model real choices. Both approaches take into account some behavioral factors. The aim of this paper is to check the consistency of orders of the valuations of random alternatives based on these behavioral rules. The order of the alternatives is generated by a preference relation over the decision set. In this paper, we show that the methodology for creating rankings based on total orders can be used for the preference relations considered, because they enable comparison of all the elements in a set of random alternatives. For almost second degree stochastic dominance, this is possible due to its particular properties, which stochastic dominance does not possess.
Źródło:
Operations Research and Decisions; 2012, 22, 3; 23-36
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application cumulative tensile explosions for roof cutting in Chinese underground coal mines
Autorzy:
Yang, Jun
Liu, Binhui
Bian, Wenhui
Chen, Kuikui
Wang, Hongyu
Cao, Chen
Powiązania:
https://bibliotekanauki.pl/articles/2073869.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
roboty strzałowe
wysadzanie skał
kopalnia
cumulative blast
bilateral cumulative tensile explosion
roof cutting and pressure relief technology
gob-side entry retaining
Opis:
Cumulative blasts are an important controlled blasting method used to control the propagation of cracks in the predetermined direction. However, traditional cumulative blasts are associated with long processing times and poor blasting effects. A simple blasting technology called bilateral cumulative tensile explosion (BCTE) is proposed in this paper. There are two application types where BCTE is used. The first application is used to control the stability of high-stress roadways in both Wangzhuang mine 6208 tailgate and Hongqinghe mine 3-1103 tailgate. The second application is used to replace the backfill body in gob-side entry retaining (GER) in Chengjiao mine 21404 panel, Jinfeng mine 011810 panel and Zhongxing mine 1200 panel. The first application type reveals that BCTE can significantly reduce the deformation of the surrounding rock and reduce the associated maintenance cost of the roadways. Whereas the second application type, the roadway deformations are smaller, the process is simpler, and the production costs are lower, which further promotes GER and is of significance towards conserving resources.
Źródło:
Archives of Mining Sciences; 2021, 66, 3; 421--435
0860-7001
Pojawia się w:
Archives of Mining Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differences in the reconstructions of the depositional environment of overbank sediments performed using the C/M diagram and cumulative curve analyses
Autorzy:
Liro, M.
Powiązania:
https://bibliotekanauki.pl/articles/294944.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
depositional environment
C/M diagram
cumulative curve
settling velocity
Opis:
In order to compare the results of the reconstructions of depositional environment of sediments performed using the C/M diagram (Passega, Byramjee 1969) and the cumulative curve analysis (Visher 1969), 49 samples of overbank sediment were collected in the valley of the Dunajec River. The samples were collected from the fill of an abandoned channel on the floodplain of the lower Dunajec (17 km from its mouth) and from the floodplain of the Dunajec in the backwater of the Czorsztyn Reservoir and analysed used the laser diffraction and sieve methods. A cumulative curve analysis of the samples located in the fields of dominant deposition from traction in the C/M diagram (Fields I, II, III, IX) showed that the dominant type of their transport prior to deposition was saltation and suspension (81%), while traction amounted to an average of 19%. In the fields of the C/M diagram corresponding to the deposition of graded suspension under the conditions of high (Field IV) and moderate turbulence (Field V), the dominant type of sediment transport before deposition was saltation, whose amounted to 78–86% (Field IV) and 50–76 % (Field V). In the fields of the C/M diagram indicating deposition from graded suspension transported in conditions of low turbulence (VI) and uniform suspension of varied grain size (VII), the dominant type of transport prior to deposition was suspension, amounting to 35–94%. Sediments located in the field of the C/M diagram corresponding to the finest uniform suspension and pelagic suspension (Field VIII) were in 91–95% transported in suspension prior to deposition.
Źródło:
Landform Analysis; 2015, 29; 35-40
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 125

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