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Tytuł:
Angle - what kinds of angles we make use of
Autorzy:
Jędrzejewski, J.
Troczka-Pawelec, K.
Powiązania:
https://bibliotekanauki.pl/articles/951845.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane
Tematy:
kąty
geometria
matematyka szkolna
angles
geometry
school mathematics
Opis:
The idea of an angle has several meanings at school mathematics. We propose the survey of different understandings of this notion with respect to the age of pupils, the level of school. We discuss the difficulties in defining and understanding of the notion of an angle. Of course, we discuss the topic with respect to Polish programmes of school mathematics.
Źródło:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics; 2015, 20; 15-22
2450-9302
Pojawia się w:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-wetting to Wetting Transition Temperatures of Liquid Tin on Surfaces of Different Steel Samples Corresponding to their Spontaneous Deoxidation
Autorzy:
Varanasi, D.
Aldawoudi, K. E
Baumli, P.
Koncz-Horvath, D.
Kaptay, G.
Powiązania:
https://bibliotekanauki.pl/articles/2049712.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wetting transition
deoxidation
contact angles
steels
liquid tin
Opis:
The goal of this paper is to measure the non-wetting to wetting transition temperatures of liquid tin on surfaces of different steel samples in vacuum with residual pressure of 10-8 bar. The experiments were conducted on four steels (C45, S103, CK60 and EN1.4034) of varying compositions using pure tin (99.99%) by the sessile drop method. Non-wetting to wetting transition (contact angle decreasing below 90°) by liquid tin was observed as function of increasing temperature in the range of 820-940 K for low alloyed steels C45, S103 and CK60, while it was considerably higher (around 1130 K) for high chromium EN1.4034 steel. it is concluded that at about the same temperatures, the surfaces of the steel samples are spontaneously deoxidized due to the combined effect of high temperature, low vacuum and C-content of steels. After the oxide layer is removed, the contact angles of liquid tin on steel surfaces were found in the range of 45-80° for low alloyed C45, S103 and CK60 steels and around 20° for high chromium EN1.4034 steel. These relatively high contact angle values compared to other metal/metal couples (such as liquid Cu on steels) are due to the formation of not fully metallic intermetallic compounds (FeSn and FeSn2) at the interface (such do not form in the Cu/Fe system).
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 2; 469-476
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Building the library of RNA 3D nucleotide conformations using the clustering approach
Autorzy:
Zok, T.
Antczak, M.
Riedel, M.
Nebel, D.
Villmann, T.
Lukasiak, P.
Blazewicz, J.
Szachniuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/329744.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
RNA nucleotides
conformer library
torsion angles
clustering
neural gas
Opis:
An increasing number of known RNA 3D structures contributes to the recognition of various RNA families and identification of their features. These tasks are based on an analysis of RNA conformations conducted at different levels of detail. On the other hand, the knowledge of native nucleotide conformations is crucial for structure prediction and understanding of RNA folding. However, this knowledge is stored in structural databases in a rather distributed form. Therefore, only automated methods for sampling the space of RNA structures can reveal plausible conformational representatives useful for further analysis. Here, we present a machine learning-based approach to inspect the dataset of RNA three-dimensional structures and to create a library of nucleotide conformers. A median neural gas algorithm is applied to cluster nucleotide structures upon their trigonometric description. The clustering procedure is two-stage: (i) backbone- and (ii) ribose-driven. We show the resulting library that contains RNA nucleotide representatives over the entire data, and we evaluate its quality by computing normal distribution measures and average RMSD between data points as well as the prototype within each cluster.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2015, 25, 3; 689-700
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Research of Tandem-Scheme UAV Model Aerodynamic Characteristics
Autorzy:
Masko, O. M.
Kryvokhatko, I. S.
Sukhov, V. V.
Powiązania:
https://bibliotekanauki.pl/articles/213671.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
UAV
tandem-scheme
aerodynamic characteristics
wingspan
stagger
dihedral angles
Opis:
Tandem-wing aerodynamic scheme became widespread for tube launch UAV due to possibility of required flight performance realization under tight dimension constraints. In this work results of wind tunnel weight and visual tests of UAV model with wingspans about 1 m are presented. Model aerodynamic characteristics were defined by six-component wind tunnel balance at Mach number 0.075 and Reynolds number 187 000 calculated for one wing chord of 0.11 m. Model stagger (390, 490, 590 mm), rear wing dihedral angle (0°, -5°, -9°), forward-to-rear wingspan ratio (0.67; 0.9; 0.92; 1.24) were variable. It was determined that model is longitudinal and directional static stable, has high maximal lift-drag ratio (in range from 10.6 to 13.7) and acceptable maximal lift coefficient without flaps (from 1.05 to 1.09) and critical angle of attack (from 15.1 to 16.4°). Stagger increasing leads to zero or positive maximal lift-drag ratio increasing. If forward wing span is larger than rear wing span than stagger increasing is more effective with zero dihedral angle. If rear wing span is larger than forward wing span than stagger increasing is more effective with negative dihedral angle.
Źródło:
Prace Instytutu Lotnictwa; 2014, 4 (237) December 2014; 63-75
0509-6669
2300-5408
Pojawia się w:
Prace Instytutu Lotnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low speed wind tunnel test of the jet trainer model at high angles of attack
Autorzy:
Smędra, K.
Świerkot, R.
Kubryński, K.
Powiązania:
https://bibliotekanauki.pl/articles/949501.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
aerodynamics
aerodynamic project
high angles of attack aerodynamics
manoeuvrability
Opis:
The article discusses the results of the wind tunnel test of the model of the highly manoeuvrable jet trainer, in the wide range of angles of attack. The main objective of this work was to modify the geometry in order to achieve the assumed properties (stability, control and dynamic behaviour in terms of high angles of attack), and possibly reliable verification of characteristics. In order to control the geometry of subsequent variants of aerodynamic models during the test, the full parametric representation of the CAD geometry was used (applying Siemens NX system) and the modular construction of the models. This enables to change the various components (e.g. the front part of the fuselage, the air inlets, wings, tail, strakes etc.). The wind tunnel models were produced using 3D printers, based on the FDM (Fused Deposition Modelling) method. This allows for relatively fast model prototyping while maintaining full control of geometry and very low cost. Studies were conducted using several models differing in geometry as well (in order to determine the effect of blockage) model scale implementation. Studies carried out in a low speed wind tunnel using an internal balance mounted on bent sting (to enable measurement at high angles of attack). The measurements were carried out in the range of angles of attack -2° to 56° and slip angles +/- 20°, with different deflections of leading edge flaps, trailing edge flaps, elevator, rudder and ailerons. The static aerodynamic characteristics of final version of the model indicates the correct properties in the entire range of flight conditions: the ability to ensure a longitudinal balance with appropriate longitudinal moments necessary to control (reduce the angle of attack), the correct dynamic characteristics at high angles of attack (no pro-spin trend) and the ability to lateral and directional control. Some interesting novelty that will be presented in the paper is a preliminary evaluation of the dynamic properties of the aircraft at high angles of attack, carried out on the model in the tunnel, providing three degrees of freedom (rotation about all three axes).
Źródło:
Journal of KONES; 2016, 23, 4; 471-478
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lower extremities joint angles during squats - underexplored parameter of standard rehabilitation and sports exercise
Autorzy:
Kotiuk, Viktor
Kostrub, Oleksandr
Blonskyi, Roman
Sushchenko, Lyudmyla
Smirnov, Dmitry
Vadzyuk, Nazar
Powiązania:
https://bibliotekanauki.pl/articles/2170358.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
squats
joint angles
half-squats
Smith machine squats
lunges
Opis:
The purpose was to specify the lower extremity joint angles in different squats for the future development of adequate computational models of the joints. Methods. We investigated joint angles in the lower extremity joints in 103 athletes in different types of squats with and without added weight (barbell) 75% of 1 repetition maximum. Results. The mean knee and hip flexion and ankle dorsiflexion angles in horizontal squats are respectively 113.42°, 128.21°, and 23.27°; in half-squats 70.60°, 87.94°, and 15.60°; in lunges 98.04°, 96.36°, and 8.02°; in Smith machine squats 94.42°, 106.28°, and 4.46°. In a horizontal squat with a barbell, the knee joint flexion and the ankle joint dorsiflexion angles are significantly larger (by 4.56° and 3.11 °, respectively) than in squats without added weight. The knee joint flexion and ankle dorsiflexion angles in lunges are significantly less in barbell squats (by 4.15° and 4.37°, respectively). The knee flexion angle in horizontal barbell squats in male athletes is significantly larger than in female athletes (by 4.71°). Conclusions. The mean knee and hip flexion and ankle dorsiflexion angles in different types of squats are established and may be used for further research. Horizontal squats produce greater lower extremity joint angles.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2022, 40; 17-24
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculation of Contact Pressures in Cylindrical Metal-Polymer Sliding Guides
Autorzy:
Chernets, Myron
Pashechko, Mykhaylo
Kornienko, Anatolii
Ishchenko, Anatoly
Powiązania:
https://bibliotekanauki.pl/articles/2123281.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
cylindrical metal-polymer guides
calculation method
maximum contact pressures
contact angles
Opis:
Guides (linear plain bearings) of reciprocating motion are widely used in many areas of human activity. However, at present there are no reasonable methods for their calculation, in particular metal-polymer guides. The author's method of contact strength calculation of cylindrical metal-polymer sliding guides is presented in the article. The effect of load, bushing diameter and radial clearance on the maximum contact pressures and their distribution in the guide was studied on the example of epoxy-based polymer composite material Moglice of the German company DIAMANT Metallplastic GmbH, which is used to restore tribotechnical sliding systems elements. Quantitative and qualitative regularities of dependence of contact pressures on the accepted factors of influence are established: at loading increase four times the maximum contact pressures and contact angles will increase twice irrespective of change of sizes of a radial clearance and diameter of a base; increasing the base diameter leads to a directly proportional decrease in maximum contact pressures; doubling the radial clearance leads to a -fold increase in pressure, regardless of changes in the magnitude of the load and the diameter of the base. Regularities of change of contact parameters from the specified factors are given graphically.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 3; 30--33
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of oxidation on the wetting of coal surfaces by water: experimental and molecular dynamics simulation studies
Autorzy:
Li, E.
Lu, Y.
Cheng, F.
Wang, X.
Miller, J. D.
Powiązania:
https://bibliotekanauki.pl/articles/109792.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
wettability
oxidation
molecular dynamics simulation
hydrogen bonding
contact angles
coal surfaces
Opis:
The wettability of coal surfaces by water continues to be one of the key factors which determines the success of coal flotation. Consequently, oxidation of coal surfaces is a fundamental issue of interest. In this work, the effect of oxidation on the wetting of coal surfaces and the interaction between water molecules and oxygen-containing sites at the coal surface was investigated based on advancing/receding contact angle measurements and molecular dynamics simulations. For the simulation studies, a flat coal surface was constructed with the assistance of the molecular repulsion between graphite surfaces and the assembly of Wiser coal molecules. Our results indicated that the simulated advancing and receding contact angles were very similar, and both of them decreased, as expected, with an increase of hydroxyl sites at the coal surface. The good agreement between the simulated advancing/receding contact angles and the experimental receding contact angle values suggested that the configuration of the systems and the set of parameters for the simulation were appropriate. The spreading of water is mainly due to the hydrogen bonds formed between the interfacial water molecules and the hydroxyl sites at the coal surface. The hydroxyl groups show stronger hydration capacity than other oxygen-containing groups according to the calculated hydrogen bonds and interaction energies.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 4; 1039-1051
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CHB inverter with DC-link capacitor balancing and total harmonic minimization
Autorzy:
Armi, F.
Manai, L.
Besbes, M.
Powiązania:
https://bibliotekanauki.pl/articles/141332.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
CHB inverter
capacitor voltage balancing
switching angles
Newton Raphson
algorithm
SHE
THD
Opis:
A cascaded H-bridge (CHB) multilevel inverter generally requires several DC sources. An alternative option is to replace the separate DC source feeding an H-bridge cell with a capacitor, while maintaining the other H-bridge cell with a real DC voltage source. In this paper a 7-level cascaded H-bridge inverter with a single DC-source is presented. This paper focuses mainly to achieve effective capacitor voltage balancing and selective harmonic elimination (SHE) based on the Newton Raphson algorithm (N–R). It shows hope to reduce the voltage ripple of the capacitors, which leads to higher power conversion efficiency with equal power distribution, reduces the initial cost, and complexity hence it is apt for industrial applications. Simulation results support the proposed control technique.
Źródło:
Archives of Electrical Engineering; 2018, 67, 1; 81-93
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Udoskonalenie techniki obserwacji zwilżenia mączlika szklarniowego : (Trialeurodes vaporariorum Westwood)
Improving the observation technique of the wettability of greenhouse whitefly : (Trialeurodes vaporariorum Westwood)
Autorzy:
Ratajkiewicz, H.
Wrocławski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1366451.pdf
Data publikacji:
2015
Wydawca:
Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:
zwilżenie
kąty przylegania
mączlik szklarniowy
Trialeurodes vaporariorum
wetting properties
contact angles
greenhouse whitefly
Opis:
Hydrofobowe właściwości powierzchni owadów zapewniają ochronę ich organizmów przed zwilżeniem przez wodę. Dzięki tym właściwościom szkodniki roślin uprawnych mogą zmniejszać zwilżenie przez krople rozpylonej cieczy. Celem pracy było udoskonalenie techniki obserwacji zwilżenia mączlika szklarniowego (Trialeurodes vaporariorum Westwood) po naniesieniu kropli poprzez opryskiwanie. Badania potwierdziły przydatność wykonanego stolika pochylanego z wbudowanym zwierciadłem płaskim w ocenie zwilżenia T. vaporariorum. Obecność obfitych wosków kutykularnych oraz mikrostruktura grzbietowej części puparium i larw mogą wyjaśniać przyczyny ich hydrofobowości. Wraz z obniżeniem napięcia powierzchniowego cieczy zwiększało się zwilżenie owada. Wyznaczenie kątów przylegania cieczy po spontanicznym osadzeniu kropli na puparium T. vaporariorum nie przyniosło jednak zadowalających rezultatów z uwagi na kształt powierzchni grzbietowej.
The hydrophobic properties of insects surface protect their organisms from wetting by water. Thanks to these properties pest may reduce wetting by spray droplets. The aim of this work was to improve observation techniques of wetting the greenhouse whitefly (Trialeurodes vaporariorum Westwood) after the application of spray droplets. The study confirmed the usefulness of the tilting stage with built-in flat mirror in evaluation of wetting properties of T. vaporariorum. The presence of abundant epicuticular waxes and dorsal microstructure may explain the hydrophobicity of pupae and larvae. As the surface tension of the liquid decreased the wetting of the insect increased. Determination of the contact angles after spontaneous deposition of droplets on pupa of T. vaporariorum has not produced satisfactory results due to the shape of the dorsal surface.
Źródło:
Aparatura Badawcza i Dydaktyczna; 2015, 20, 3; 174-187
2392-1765
Pojawia się w:
Aparatura Badawcza i Dydaktyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical characteristics of the modified glow discharge ion source
Autorzy:
Soliman, B.
Abdelrahman, M.
Basal, N.
Abdelsalam, F.
Powiązania:
https://bibliotekanauki.pl/articles/1057968.pdf
Data publikacji:
2018-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
plane cold cathode
copper anode of different angles
ion source
plasma and discharge anisotropy
Opis:
This work is concerned with a study on the operating characteristics of a self-axial extraction-type glow-discharge ion source. This compact ion source, with conical anode of various divergence angle Θ, can work under different operating conditions. An output ion beam currents I_{b} were measured at a distance d_{cc} = 5 cm from the plane cathode, and were found to be dependent upon the gas pressure p, angle Θ and the discharge current I_{d}. High ion beam currents of 85 μA and 410 μA were obtained at the optimum angle Θ=30° for discharges: [N₂ gas, p = 2.9×10¯² mbar, I_{d} = 2 mA] and [H₂ gas, p = 7.7×10¯² mbar, I_{d} = 2 mA], respectively.
Źródło:
Acta Physica Polonica A; 2018, 133, 1; 10-14
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Panorama ze Wzgórza Czwartek w Lublinie - analiza widoczności zabudowy metodą kątów widokowych
Panoramic view from Czwartek Hill - The method of dynamic analysis of visual angles
Autorzy:
Czyńska, K.
Powiązania:
https://bibliotekanauki.pl/articles/369416.pdf
Data publikacji:
2011
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
analiza kątów widokowych
wirtualne modelowanie miast
dynamic analysis of visual angles
virtual city models
Opis:
Zagadnienie ochrony historycznie ukształtowanych krajobrazów miejskich przed niekorzystnymi działaniami inwestycyjnymi jest niezwykle złożone. Badanie skutków planowanych działań jest trudne do przeprowadzenia przy pomocy tradycyjnych technik analizowania przestrzeni miejskiej. Szansą na ułatwienie i przyspieszenie tego procesu, a także jego obiektywizację jest zastosowanie cyfrowych technik analitycznych wykorzystujących wirtualne modele miast. W niniejszym artykule przedstawiona zostanie metoda interpretacji budowy krajobrazu miejskiego z wykorzystaniem technik modelowania cyfrowego. Analizie kątów widokowych poddana zostanie jedna z najbardziej atrakcyjnych panoram Lublina - widok ze Wzgórza Czwartek. W pracy wykorzystano autorską aplikacje komputerową opracowana przez autorkę. Możliwość jej praktycznego zastosowania została wykazana w projektach planistycznych wykonanych dla Gminy Miasta Szczecin w latach 2005-2007 oraz dla Gminy Miasta Lublin w latach 2010-2011.
Protection of historically developed urban landscapes against adverse investment activities is extremely complex. Examination of effects of planned activities is difficult to perform using traditional analyzing techniques. An opportunity to facilitate and accelerate this process and its objectification is the use of virtual city models. This paper presents a method of interpretation of urban landscape using method of dynamic analysis of visual angles. It will be shown on the example of one of the most magnificent panoramas of Lublin - a view from the Czwartek Hill. The method was used in practice in the projects carried out for the City of Szczecin in the years 2005-2007 and for the Municipality of Lublin in 2010-2011.
Źródło:
Przestrzeń i Forma; 2011, 15; 303-310
1895-3247
2391-7725
Pojawia się w:
Przestrzeń i Forma
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka życia duchowego Elżbiety Catez – św. Elżbiety od Trójcy Świętej na podstawie jej listów adresowanych do ks. kanonika Emiliana Izydora Angles’a
Elisabeth’s Catez Characteristic of Spiritual Life – St. Elisabeth of the Holy Trinity on the Base of her Letters Addressed to Canon Priest Emilian Isidor Angles
Autorzy:
Wilk, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/571290.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Papieski Jana Pawła II w Krakowie
Tematy:
Elżbieta Catez – św. Elżbieta od Trójcy Świętej
ks. kanonik Emilian Izydor Angles
powiernik
wiara
życie duchowe
Elisabeth Catez – Saint Elisabeth of the Holy Trinity
Canon Priest Emilian Isidor Angles
confessor
faith
spiritual life
Opis:
Elżbieta Catez, a w klasztorze karmelitańskim w Dijon Elżbieta od Trójcy Świętej, zarówno jako osoba świecka, jak i zakonna przez lata prowadziła korespondencję ze swoim pierwszym ojcem duchowym – ks. kanonikiem Emilianem Izydorem Angles’em. Po jej śmierci zachowały się dwadzieścia dwa listy, które stanowią teksty źródłowe niniejszego opracowania. W artykule przeprowadzono ich studium pod kątem życia duchowego autorki. Wyszczególniono dwie grupy pism. W pierwszych pięciu (Listy młodzieńcze) wyróżniono trzy aspekty jej życia teologalnego: 1. Pragnienie tego, czego chce Bóg; 2. Obecność Boga w duszy; 3. Przynależność do Boga. W kolejnych siedemnastu (Listy z Karmelu) wyeksponowano trzy wzajemnie przenikające się aspekty jej życia duchowego: 1. Obdarowanie miłością; 2. Duchowe pragnienia; 3. Niebo w duszy. Listy te są świadectwem, do jakiej doskonałości może dojść dusza wrażliwa na Boży głos; świadectwem bliskości Boga i człowieka; świadectwem głębokiego życia duchowego kształtowanego przez Bożą łaskę i ludzką odpowiedź; świadectwem życia, do którego Bóg ma pierwsze prawo.
Elisabeth Catez and in Carmelite Convent in Dijon Elisabeth of the Holy Trinity, as well as secular person and a convent one for many years she continued correspondence with her first priest – Canon Priest Emilian Isidor Angles. After her death were kept twenty two letters, which are the foundational texts of this analyses. In the article is made the study of those letters from the perspective of author’s spiritual life. There are set two groups of these writings. In the first five (Youth Letters) are distinguished three aspects of her teologal life: 1. Desire that, what God wants; 2. The presence of God in soul; 3. Belonging to God. In other seventeen (Letters from Carmel) there are exposed three intermingling aspects of her spiritual life: 1. Gifted with love; 2. Spiritual desires; 3. Heaven in soul. These letters are the proof to what perfection can get soul sensitive to God’s voice; testimony of closeness God and man; testimony of deep spiritual life shaped by God’s grace and human’s answer; evidence of life to which God has first right.
Źródło:
Polonia Sacra; 2018, 22, 3(52); 167-189
1428-5673
Pojawia się w:
Polonia Sacra
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effects of Co-ordinating Postures With Shoulder and Elbow Flexion Angles on Maximum Grip Strength and Upper-Limb Muscle Activity in Standing and Sitting Postures
Autorzy:
Kong, Y. K.
Powiązania:
https://bibliotekanauki.pl/articles/90234.pdf
Data publikacji:
2014
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
coordination posture
shoulder and elbow angles
grip strength
EMG
koordynacja postawy
siła uścisku
kończyny górne
Opis:
Eighteen co-ordination postures with shoulder flexion angles (0°, 45° and 90°) and elbow flexion angles (0°, 45° and 90°) in standing and sitting positions were evaluated to identify the effects of co-ordination postures on maximum grip strength and muscle activities of the upper limb in this study. Thirty-nine subjects were recruited and their maximum grip strengths were measured. According to the analysis of grip strength, grip strength was shown to be stronger in a standing posture (297.4 N) than in a sitting posture (274.6 N). In addition, grip strength (293.8 N) at 90° shoulder flexion angle was significantly higher than that at 0° and 45°shoulder angles. There was no statistically significant difference in grip strength from the effects of elbow angles in this study. The results of muscle activities for all muscle groups showed a similar trend with the results of grip strength associated with shoulder angles.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2014, 20, 4; 595-606
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determining the spatial orientation of remote sensing sensors on the basis of incomplete coordinate systems
Autorzy:
Zalas, E.
Sanecki, J.
Klewski, A.
Stępień, G.
Powiązania:
https://bibliotekanauki.pl/articles/906053.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
remote sensing
Euler angles
incomplete coordinate system
exterior orientation of sensor
isometric transformation
axes rotations
Opis:
This article presents a method of determining the spatial orientation of measuring sensors. This method is based on isometric space transformation of a rigid body registered in an oblique coordinate system and is adopted for photogrammetric purposes. The approach is based on incomplete coordinate systems used for determination of transformation parameters. In this publication an incomplete coordinate system is one without one of the axes and in which the matching points connected to primary and secondary coordinate systems are on the two other axes. On the basis of angular momentum, translocation of the beginning of coordinate system is determined first. The next step is to calculate the Euler angles – exterior orientation of sensor. In this method the beginning (the center) of the coordinate system is associated with the sensor itself. This approach, in comparison with the methods known from photogrammetry and remote sensing, allows one to reduce the points needed for transformation. In case of determining the Euler angles two points are indispensable and, in case of moving the beginning of coordinate system, three points are essential. At the end of this paper the analysis of transformation, based on independent control points (ICP), was completed.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 29-33
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
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