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Tytuł:
Monitoring Plyometric Exercise Intensity Using Rating of Perceived Exertion Scale
Autorzy:
Asadi, Abbas
Powiązania:
https://bibliotekanauki.pl/articles/1031792.pdf
Data publikacji:
2014
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
maximal effort
perceived exertion
stretch-shortening cycle
Opis:
The aim of this investigation was to determine the effectiveness of rating of perceived exertion (RPE) scale to measure plyometric exercise intensity during low (L), moderate (M) and high (H) intensity. Fourteen physically active students (age; 21±1.1 y, height; 178.7±8.2 cm and body mass; 74.6±9.1 kg) volunteered to participate in this study and performed each intensity once separated with 24 h recovery. The H consisted of 1 set of 5 repetitions at 90% of the subject’s vertical jump height (VJH). The M consisted of 10 repetitions at 70% VJT, and the L consisted of 1 set of 15 repetitions at 50% VJH. RPE was measured following the completion each intensity using 0-10 Borg RPE scale. Data was analyzed using repeated measures ANOVA and the level of significant was set at p < 0.05. The results indicated increases in RPE following enhancing exercise intensity (p < 0.05). Performing fewer repetitions at a higher intensity was perceived to be more difficult than performing more repetitions at a lower intensity. The results of the current investigation revealed that the RPE method is effective in monitoring different plyometric exercise and training intensities and it can be recommend that strength and conditioning professionals and athletes use the RPE method based on the effectiveness tool for monitoring their plyometric exercise and training sessions at different intensities.
Źródło:
Physical Activity Review; 2014, 2; 10-15
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Students facing the perspective of returning to school after the period of remote education. Based on the Comfort–Stretch-Panic concept
Autorzy:
Chojnacka, Barbara
Iwański, Rafał
Litwiński, Michał
Sielicka, Edyta
Powiązania:
https://bibliotekanauki.pl/articles/45447804.pdf
Data publikacji:
2024-01-14
Wydawca:
Akademia Pedagogiki Specjalnej im. Marii Grzegorzewskiej. Wydawnictwo APS
Tematy:
remote education
direct education
students' educational readiness
Comfort–Stretch–Panic concept
Opis:
The aim of the study was to identify the factors that influence situating the students in the Comfort–Stretch-Panic (CSP) zones in the perspective of transition from remote to direct education. The study uses an original tool adapted upon the CSP concept. The presented data was obtained in 2021, from a representative sample of 1125 students. Thus, obtained data allowed to determine the factors of willingness of the primary school students to return to direct education. The research hypotheses were verified using a multinomial logit model. The study shows that the students' readiness depends on factors such as: gender and age, active participation in the online educational process, difficulties related to the process and relationships at school, as well as the family and school support potential. The significant influence caused by the students' personal problems and psychophysical condition on their potential return to direct education was not observed.
Źródło:
International Journal of Pedagogy, Innovation and New Technologies; 2023, 10, 2; 126-152
2392-0092
Pojawia się w:
International Journal of Pedagogy, Innovation and New Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of the Fracture Toughness Characteristics of S355JR Steel
Autorzy:
Dzioba, I.
Furmańczyk, P.
Lipiec, S.
Powiązania:
https://bibliotekanauki.pl/articles/352777.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
S355JR steel
strength properties
fracture toughness
stretch zone width
Opis:
The article presents the results of tests carried out on S355JR steel of ferrite-pearlite and ferrite-bainite microstructures. The strength properties and fracture toughness were determined. The critical value of fracture toughness was determined at the moment of crack initiation by measuring of the stretch zone width, and in the moment of reaching a subcritical crack growth of 0.2 mm. Determination of fracture toughness characteristics was carried out in accordance with the procedures of ISO and ASTM standards.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 1; 497-503
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Debre Gergis archaeological site: Ethio-Polish research in the Tigray region of Ethiopia (preliminary results)
Autorzy:
Gaudiello, Michela
Mackiewicz, Maksym
Powiązania:
https://bibliotekanauki.pl/articles/2033319.pdf
Data publikacji:
2021-12-31
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
Tigray region
Ethiopia
Late Aksumite period
excavation
survey
digital documentation
decorrelation stretch
Opis:
A new Polish project, the first to be carried out in Ethiopia by the PCMA University of Warsaw, jointly with Mekelle University, focused on the excavation of the ruins of a church tentatively dated to the Late Aksumite period (6th–8th centuries AD). The site, which is located in the northern Ethiopian region of Tigray, was chosen for multiple reasons, not the least because of its location on ancient trade routes and because the surviving ruins offered the advantage of immediate visual impact. The work was unexpectedly interrupted by the global Covid-19 pandemic and recent political turbulences in the Tigray region. The paper discusses the early findings, providing, among others, a full description of the PolART excavations in the southeastern part of the church and the discovery of a rock shelter with an ancient inscription and painted pictograms.
Źródło:
Polish Archaeology in the Mediterranean; 2021, 30(2); 477-511
1234-5415
Pojawia się w:
Polish Archaeology in the Mediterranean
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Właściwości folii stretch stosowanej do osłaniania bel zielonki a jakość uzyskiwanych kiszonek
Properties of the stretch film used for green foodder bales wrapping vs. quality of the silage
Autorzy:
Korpysz, K.
Gach, S.
Powiązania:
https://bibliotekanauki.pl/articles/334108.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
folia stretch
zielonka
kiszonki
stretch
green foodder
silage
Opis:
Wskazano na właściwości folii stosowanej do osłaniania bel zielonki przed dostępem powietrza. Przytoczono istotne parametry folii, metody ich badania oraz wyniki badań. Dokonano przeglądu i analizy wyników badań nad wpływem rodzaju i liczby warstw folii na jakość kiszonki.
Some properties of the stretch film used to cover bales with green fodder and protect against air access were discussed. The most important parameters of the film were considered as well as methods and results of investigation ofthe film. The review and analysis of some experimental data were presented to show an effect of type and number of the film layers on quality of the ensilaged green fodder.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2011, 56, 1; 76-81
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Underclass i kultura ubóstwa w badaniach nad rozwojem kompetencji moralnych i społecznych w środowiskach ludzi ubogich
Underclass, Culture of Poverty and the Research in Sociomoral Competence among the Poor
Autorzy:
Kowalewska, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/781209.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
underclass
culture od poverty
morality
value stretch
contemporary society
Opis:
In this paper, I consider whether a theoretically defined concept of underclass can be helpful in social scientific discourse. I analyze, review and categorize the concept of a underclass and I made some suggestions for a use of the concept application in the study of social, psychological and moral consequences of poverty. It begins with a discussion of the continuing and pervasive appeal of structural explanations as the root cause of poverty. Then are also examined cultural theories, which by contrast find explanation for poverty in various elements of culture (ex. cultural traits of poor are thought to be different from those of the rest society). A third, a synthetic review of the urban underclass concept is explored. The article also describes the concept of a „culture of poverty” (taking into account the context of the subculture) and „lower class value stretch” as influential concepts in analyses of contemporary poverty and in explanations of the behavior of the poor.
In this paper, I consider whether a theoretically defined concept of underclasscan be helpful in social scientific discourse. I analyze, review and categorize the conceptof a underclass and I made some suggestions for a use of the concept application inthe study of social, psychological and moral consequences of poverty. It begins with adiscussion of the continuing and pervasive appeal of structural explanations as theroot cause of poverty. Then are also examined cultural theories, which by contrast findexplanation for poverty in various elements of culture (ex. cultural traits of poor arethought to be different from those of the rest society). A third, a synthetic review of theurban underclass concept is explored. The article also describes the concept of a „cultureof poverty” (taking into account the context of the subculture) and „lower class valuestretch” as influential concepts in analyses of contemporary poverty and in explanationsof the behavior of the poor.
Źródło:
Ethics in Progress; 2018, 9, 1; 62-98
2084-9257
Pojawia się w:
Ethics in Progress
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the Influence of Stretch on the Air Permeability of Knitted Fabric: Effect of Loop Length
Badanie wpływu rozciągnięcia dzianin na przepuszczalność powietrza. Wpływ długości pętli
Autorzy:
Kumar, V.
Prakash, C.
Manigandan, G.
Sampath, V. R.
Powiązania:
https://bibliotekanauki.pl/articles/1419911.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
air permeability
comfort
knitted fabrics
loop length
relaxation
stretch
przepuszczalność powietrza
wygoda
dzianiny
długość pętli
rozciągliwość
Opis:
Most of the time, a certain degree of stretch prominently and incrementally occurs in intimate wear, leisure wear, sportswear, medical textiles etc., during their action. Variations in the stretch gradient would definitely cause changes in the air permeability of knitted fabrics. The influence of variables such as loop length, the presence of an elastomeric component and fabric structure on the air permeability of cotton single jersey and pique knitted fabrics in a stretched state was critically analysed. In this work, changes in the air permeability of cotton jersey samples with and without elastomer were investigated and reported by keeping the samples in static up to an incremental stretch of 40% at a rate of 10% of the stretch gradient, in a dry relaxed state, wet relaxed state and fully relaxed state.
W większości przypadków, podczas użytkowania odzieży rekreacyjnej, sportowej, medycznej itp. występuje pewien stopień rozciągnięcia. Wahania gradientu rozciągliwości powodują zmiany przepuszczalności powietrza dzianin. W pracy przeanalizowano wpływ zmiennych, takich jak: długość pętli, obecność składnika elastomerowego i rodzaju struktury na przepuszczalność powietrza dzianin bawełnianych typu single jersey i typu pique w stanie rozciągniętym. W pracy zbadano i odnotowano zmiany przepuszczalności powietrza w przypadku próbek dżerseju bawełnianego z elastomerem i bez elastomeru, utrzymując próbki w stanie statycznym do przyrostowego rozciągnięcia 40% z 10% gradientem rozciągania w stanie mokrym i suchym.
Źródło:
Fibres & Textiles in Eastern Europe; 2021, 1 (145); 53-56
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bending Moment and Cross-Section Deformation of a Box Profile
Autorzy:
Kut, Stanisław
Stachowicz, Feliks
Powiązania:
https://bibliotekanauki.pl/articles/102893.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
stretch-bending
box profile
aluminium alloy
deformation
FEM
zginanie
profil skrzynkowy
stop aluminium
odkształcenie
MES
Opis:
In the process of plastic bending of thin-walled profiles, there is a significant deformation of the cross-section, which has a very significant impact on the course and effects of the shaping process construction products. In this paper, the experimental, analytical as well as numerical analyses of the box profile bending process enabled to establish the relationships determining the dependence of the cross-sectional form and bending moment on the bending curvature. The following paper discusses pure bending moment and the cross-sectional deformation of 21.5×21.5×1.8 mm and 25×25×2.5 mm square tubes made of the 6060 aluminium alloy. Satisfactory agreement of the experimental results and numerical calculations was obtained for the values of horizontal and vertical wall deflection, as well as for the experimental, calculated and numerical bending moment characteristics.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 2; 85-93
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for local approximation of a planar deformation field
Autorzy:
Ligas, Marcin
Banaś, Marek
Szafarczyk, Anna
Powiązania:
https://bibliotekanauki.pl/articles/106795.pdf
Data publikacji:
2019
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
deformation analysis
polar decomposition
affine transformation
rotation matrix
stretch tensor
analiza deformacji
rozkład biegunowy operatora
transformacja afiniczna
macierz obrotu
Opis:
We present a method of approximation of a deformation eld based on the local ane transformations constructed based on n nearest neighbors with respect to points of adopted grid. The local ane transformations are weighted by means of inverse distance squared between each grid point and observed points (nearest neighbors). This work uses a deformation gradient, although it is possible to use a displacement gradient instead – the two approaches are equivalent. To decompose the deformation gradient into components related to rigid motions (rotations, translations are excluded from the deformation gradient through dierentiation process) and deformations, we used a polar decomposition and decomposition into a sum of symmetric and an anti-symmetric matrices (tensors). We discuss the results from both decompositions. Calibration of a local ane transformations model (i.e., number of nearest neighbors) is performed on observed points and is carried out in a cross-validation procedure. Verication of the method was conducted on simulated data-grids subjected to known (functionally generated) deformations, hence, known in every point of a study area.
Źródło:
Reports on Geodesy and Geoinformatics; 2019, 108; 1-8
2391-8365
2391-8152
Pojawia się w:
Reports on Geodesy and Geoinformatics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of optimal cyclic uniaxial stretches for stem cell-to-tenocyte differentiation under a wide range of mechanical stretch conditions by evaluating gene expression and protein synthesis levels
Autorzy:
Morita, Y.
Watanabe, S.
Ju, Y.
Xu, B.
Powiązania:
https://bibliotekanauki.pl/articles/951825.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
hBMSC
differentiation
mechanical stretch
tenocyte
różniczkowanie
wydłużanie
Opis:
We examined optimal cyclic uniaxial stretches for stem cell-to-tenocyte differentiation by applying a wide range of cyclic mechanical stimuli. Human bone marrow mesenchymal stem cells (hBMSCs) were subjected to three types of cyclic elongation of 5%, 10%, or 15% at a cyclic frequency of 1 Hz for 24 h or 48 h, and differentiation into tenocytes was assessed by two methods: real-time polymerase chain reaction determination of gene expression levels and western blotting analysis of protein expression levels. The gene expression levels of the differentiation markers type I collagen (Col I), type III collagen (Col III), tenascin-C (Tnc), and scleraxis (Scx), all of which are constituents of tendon tissue, were increased when cells were exposed to 10% stretching stimulation. The levels of Col I and Tnc protein synthesis levels were also higher in the cells with 10% stretching stimulation than in those subjected to other stimuli. The results indicated that 10% stretching stimulus was efficient to induce the differentiation of hBMSCs into tenocytes. In addition, the changes in gene and protein expression levels were strongly correlated with cell orientation angle. The results presented here suggest that mesenchymal stem cell-to-tenocyte differentiation is strongly associated with cumulative elongation load on the cells. This work provides novel insights into the differentiation of tenogenesis in a strain-induced environment and supports the therapeutic potential of hBMSCs.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 3; 71-79
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of differentiation time of mesenchymal-stem-cell to tenocyte under a cyclic stretching with a microgrooved culture membrane and selected measurement cells
Autorzy:
Morita, Y.
Yamashita, T.
Toku, Y.
Yu, Y.
Powiązania:
https://bibliotekanauki.pl/articles/307018.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
różnicowanie
kości
stymulacja mechaniczna
hBMSC
cyclic stretch
differentiation
differentiation time
human bone marrow-derived mesenchymal stem cell
mechanical stimulus
tenocyte
Opis:
There is a need for efficient stem cell-to-tenocyte differentiation techniques for tendon tissue engineering. More than 1 week is required for tenogenic differentiation with chemical stimuli, including co-culturing. Research has begun to examine the utility of mechanical stimuli, which reduces the differentiation time to several days. However, the precise length of time required to differentiate human bone marrow-derived mesenchymal stem cells (hBMSCs) into tenocytes has not been clarified. Understanding the precise time required is important for future tissue engineering projects. Therefore, in this study, a method was developed to more precisely determine the length of time required to differentiate hBMSCs into tenocytes with cyclic stretching stimulus. Methods: First, it had to be determined how stretching stimulation affected the cells. Microgrooved culture membranes were used to suppress cell orientation behavior. Then, only cells oriented parallel to the microgrooves were selected and evaluated for protein synthesis levels for differentiation. Results: The results revealed that growing cells on the microgrooved membrane and selecting optimally-oriented cells for measurement improved the accuracy of the differentiation evaluation, and that hBMSCs differentiated into tenocytes in approximately 10 h. Conclusions: The differentiation time corresponded to the time required for cellular cytoskeleton reorganization and cellular morphology alterations. This suggests that cells, when subjected to mechanical stimulus, secrete mRNAs and proteins for both cytoskeleton reorganization and differentiation.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 1; 3-10
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neuromechanical control in submaximal drop jumps: The effects of volitional effort demands and drop height magnitude on soleus muscle activation
Autorzy:
Mrdakovic, V.
Pazin, N.
Vulovic, R.
Filipovic, N.
Ilic, D.
Powiązania:
https://bibliotekanauki.pl/articles/307166.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
elektromiografia
sprzężenie zwrotne
staw skokowy
biomechanika
electromyography
stretch-shortening cycle
feedback control
pre activation
feedforward control
ankle biomechanics
Opis:
The purpose of this study was to investigate soleus muscle activation during different phases of drop jump performed at submaximal levels of volitional effort and drop height magnitude. Methods: Fifteen professional volleyball players with minimum of eight years of experience in jumping activities participated in the study. Experimental protocol involved executing submaximal drop jumps at three levels of volitional effort (i.e., 65, 80 and 95% of the maximal height of jump). All submaximal drop jumps were done from three drop heights (20, 40 and 60 cm). The soleus muscle activation was monitored during four jump phases: pre-activation phase before touchdown, early contact phase upon touchdown, early and late push-off phase. Results: The results indicate that volitional effort level did not change the muscle activation during pre activation and early contact phase, but only in early and late push-off phase ( p ≤ 0.05). Conversely, it was observed that muscle activation during all phases of drop jump was adapted to the increased intensity of the external load caused by increasing of drop height magnitude ( p ≤ 0.01). Conclusions: The findings of the present study suggested that soleus muscle activation has selective responses to internal load (i.e., volitional effort level) and external load (i.e., drop height magnitude) intensities when drop jump is executing with submaximal effort.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 4; 101-111
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potencjały ukryte w uczniowskich doświadczeniach wyniesionych z edukacji zdalnej w czasie pandemii
Potential hidden in students’ experiences regarding remote education during pandemic
Autorzy:
Nowotniak, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/26384309.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Kazimierza Wielkiego w Bydgoszczy
Tematy:
COVID-19
edukacja zdalna
model Komfort–Napięcie–Panika
uczniowie
distance education
Comfort–Stretch–Panic model
students
Opis:
W artykule zaprezentowano fragment wyników badania na temat: Diagnoza potrzeb i oczekiwań uczniów oraz nauczycieli szkół podstawowych w Szczecinie w przededniu powrotu do szkoły, przeprowadzonego w maju 2021 roku (reprezentatywna próba 1125 uczniów). Ramą teoretyczną badań jest model Komfort–Napięcie–Panika (ang. Comfort–Stretch–Panic model), autorstwa Karla Rohnke. Funkcjonowanie ucznia w każdej z tych trzech stref to syntetyczny obraz unikatowych, dopełniających się doświadczeń wywołanych wymogiem edukacji zdalnej w okresie pandemii. Przedmiotem niniejszego artykułu jest fragment wyników badań i wniosków dotyczących ukrytych potencjałów tkwiących w doświadczeniach zebranych przez uczniów w tamtym czasie.
This article presents a fragment of results of a research – its subject being Diagnosing needs and expectations of students and teachers in primary schools in Szczecin days before returning to school – conducted in May 2021 among 1125 students. Comfort-Stretch-Panic model, created by Karl Rohnke, has been used as a theoretical framework for said research. Students’ functioning in each and every one of the model’s aspects provides a synthetic depiction of unique, complementary experiences caused by remote education, imposed by the pandemic. The article focuses on a fragment of results and conclusions regarding potential hidden in such experiences in given time.
Źródło:
Przegląd Pedagogiczny; 2023, 1; 103-116
1897-6557
Pojawia się w:
Przegląd Pedagogiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcja sensorów rozciągania i kondycjonowania w zmiennych temperaturach na bazie polimerów barwionych barwnikiem luminescencyjnym
The conception of stretch and storage in variable temperature sensors based on polymers with luminescence dye
Autorzy:
Owczarek, G.
Pościk, A.
Powiązania:
https://bibliotekanauki.pl/articles/153600.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
sensory rozciągania
sensory kondycjonowania
polimery
luminescencja
stretch sensors
storage sensors
polymers
luminescence
Opis:
Przedstawiono koncepcję sensorów rozciągania i kondycjonowania w zmiennych temperatury wykonanych z polimerów barwionych barwnikiem luminescencyjnym o strukturze stlibenu (4,4'-Bis(2-benzoxazolyl) stilben). Dla sensorów rozciągania wyznaczono eksperymentalnie warunki odnoszące się do parametrów wymiarowych, jakie muszą być spełnione, aby paski sensorów mogły stanowić element detekcyjny. Dla sensorów kondycjonowania określono zakres temperatur, przy którym możliwa jest wzrokowa identyfikacja zmian barwy sensora oświetlonego promieniowaniem nadfioletowym.
The conception of stretch sensors made of polyethylene with luminescence dye with stliben structure (4,4-Bis(2-benzoxazolyl)stilben) is presented in the paper. The sensor models are made as stripes which are mounted to the so called basic material for which the stretch process or the temperature change process is monitored. As a result of external forces on the basic material (stretching) or temperature changes there are irreversible changes in the structure of an integrated with it sensor as a dyed polymer belt/stripe. It also causes change in the spectrum of visible radiation emitted as a result of lighting the dye polymer with ultraviolet radiation. Potential use of the designed stretch polymer sensors are elements of personal protective equipment for which, as a result of external factors, there are irreversible changes that cause reduction or total loss of the required protective properties. That element of equipment that protects against fall from height (stretch sensor) or protective clothes (temperature sensor) should be classified to this group. For stretch sensors the methods of mounting dyed polymer stripes to the basic material (which is stretched) were determined. As a result of the performed research there were determined the experimental conditions concerning the dimensional parameters which should be met to use dyed polymer stripes as one of the detect elements for stretch processes in a basic material. For storage sensors the range of temperature changes, recognizable during visual inspection, was determined.
Źródło:
Pomiary Automatyka Kontrola; 2013, R. 59, nr 9, 9; 931-934
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Effective and Fast Iranian License Plate Detection Using Statistical and Geometrical Approaches
Autorzy:
Poursiyah, Saman
Salami, Hosian
Mohebbi, Mohamad Reza
Tabatabaee, Hamid
Powiązania:
https://bibliotekanauki.pl/articles/102715.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
determine location of license plate
adaptive contrast stretch
character analysis and clustering
tablica rejestracyjna
określanie lokalizacji
zastosowanie kontrastu
Opis:
The first step in the process of detection a license plate is to determine the location of the plate. The output of this stage should be accurate enough and calculations will be completed within a short time. The reason for this is that the output of this stage is as input in the next steps. If the step to determine the location is encountered error, then the operation of the next steps will also be interrupted. In this paper, a new method is used to improve the contrast of the image, delete non-numeric characters, analysis and clustering of plain characters in order to determine the location of an Iranian car license plate with dark characters, a clear background is provided. The proposed method reduces the overall complexity of the algorithm and in addition to its ease of implementation, the system’s speed and efficiency improve the location of the plate. The proposed algorithm is independent of the number of vehicle plates in the image, image size, complete unread plate and in contrast to brightness variations, it is largely resistant. The results of the test on two different data sets with 67 and 492 images, to an accuracy of 100 and 99.59 percent with an error rate of 1.5 and 1.63 and the runtime of 109 and 17.5 milliseconds averaged, were achieved.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 4; 115-125
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 28

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