Temat: comfort - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: An attempt of the application of matching pursuit mp with Gabor dictionary for evaluation of ride comfort disturbance level
Autorzy:: Grzegożek, W.
Szczygieł, J.
Tematy:: comfort evaluation
comfort disturbances
matching pursuit
time-frequency dictionaries; Pokaż więcej
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Powiązania:: https://bibliotekanauki.pl/articles/242356.pdf Link otwiera się w nowym oknie
Opis:: Ride comfort has always been considered to be essentialfor vehicle development. Nowadays it is one of aspects of wehicle industry that is getting more and more important. Disturbances in vehicle motion, for example drive across an obstacle or drive of a rail vehicle across the transition curve may be the reason for ride comfort disturbances. These excitation values may define the subjective negative comfort assessment by a passenger or a driver. Sudden changes of acceleration with low frequencies are particularly perceptible. That is why the attempts of evaluation of these disturbances are included in standards as PCT and PDE indexes for rail vehicles. In order to designate these indexes filtration of the recorded lateral acceleration runs is done. The values of changes of lateral acceleration, of lateral jerk and roll rate in time intervals are defined. This kind of analysis in which only the amplitudes of values measured were taken into account and in which 2 Hz filter was used may cause discrepancy between subjective assessment and evaluated level of vibration. Wavelet transform that is the tool of time-frequency analysis makes non-stationary signals such as acceleration signals in case of comfort disturbances possible. The problem of evaluation of vibration level that is basedon wavelet transform analysis appears. In order to evaluate this vibration level algorithm of matching pursuit MP may be used to match the mother wavelet to the recorded signal in the best way possible. The article presents an attempt of matching pursuit algorithm with Gabor dictionary for evaluation of the discomfort level that was based on the run recorded in the tram.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: System zapewnienia komfortu w pomieszczeniach izolowanych akustycznie
Comfort providing systems in spaces with acoustic insulation
Autorzy:: Klekot, G.
Tematy:: ergonomia
komfort akustyczny
komfort klimatyczny
ergonomics
acoustic comfort
climatic comfort; Pokaż więcej
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Powiązania:: https://bibliotekanauki.pl/articles/198211.pdf Link otwiera się w nowym oknie
Opis:: Obecne ogromne możliwości sprzętu do rejestracji i przetwarzania dźwięków wygenerowały zapotrzebowanie na izolowane akustycznie pomieszczenia, w których możliwa jest poufna wymiana informacji. Potrzeba eliminacji propagacji sygnałów wibroakustycznych drogą powietrzną i przez strukturę stawia postulat pełnej izolacji takiego pomieszczenia, co z kolei stwarza konieczność zapewnienia właściwego składu chemicznego powietrza oraz stabilizacji temperatury. Artykuł zawiera rozważania dotyczące realizacji zadania zapewnienia komfortu termicznego oraz właściwej jakości powietrza w autonomicznym pomieszczeniu do prowadzenia rozmów poufnych. Przedstawiono prototypowe rozwiązania instalacji stabilizujących warunki przebywania ludzi w modułowej kabinie izolowanej akustycznie.
High capacities of currently available devices for sound registering and processing have generated a need for sound insulated spaces dedicated to exchange of confidential information. In such spaces, preventing propagation of vibroacoustic signals both by the way of air and construction elements entails complete insulation of the room. In order to meet this requirement, proper chemical composition of air and stabilized temperature conditions have to be guaranteed. The paper discusses questions related to the process of solving the task of providing thermal comfort and satisfying air quality in a room for confidential discussions. It presents prototype solutions of installations dedicated to stabilize human-friendly conditions inside a modular chamber provided with acoustic insulation.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Intelligent Prediction Model of the Thermal and Moisture Comfort of the Skin-Tight Garment
Autorzy:: Cheng, Pengpeng
Wang, Jianping
Zeng, Xianyi
Bruniaux, Pascal
Chen, Daoling
Tematy:: sportswear tights
thermal comfort
moisture comfort
principal component analysis
intelligent prediction model; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Powiązania:: https://bibliotekanauki.pl/articles/2056304.pdf Link otwiera się w nowym oknie
Opis:: In order to improve the efficiency and accuracy of predicting the thermal and moisture comfort of skin-tight clothing (also called skin-tight underwear), principal component analysis (PCA) is used to reduce the dimensions of related variables and eliminate the multicollinearity relationship among variables. Then, the optimized variables are used as the input parameters of the coupled intelligent model of the genetic algorithm (GA) and back propagation (BP) neural network, and the thermal and moisture comfort of different tights (tight tops and tight trousers) under different sports conditions is analysed. At the same time, in order to verify the superiority of the genetic algorithm and BP neural network intelligent model, the prediction results of GA-BP, PCA-BP and BP are compared with this model. The results show that principal component analysis (PCA) improves the accuracy and adaptability of the GA-BP neural network in predicting thermal and humidity comfort. The forecasting effect of the PCA-GA-BP neural network is obviously better than that of the GA-BP, PCA-BP, BP model, which can accurately predict the thermal and moisture comfort of tight-fitting sportswear. The model has better forecasting accuracy and a simpler structure.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Laboratory study about pressure distribution on car seats with people of different anthropometric features participation
Laboratoryjne badania rozkładu nacisków na siedziskach samochodowych z udziałem osób o różnych cechach antropometrycznych
Autorzy:: Zuska, A.
Jurecki, R.
Jaśkiewicz, M.
Tematy:: comfort
static comfort
travelling comfort
pressure distribution
car seat bottoms
komfort
komfort statyczny
komfort podróżowania
rozkład nacisków
siedziska samochodowe; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Powiązania:: https://bibliotekanauki.pl/articles/1363725.pdf Link otwiera się w nowym oknie
Opis:: This article refers to actual problem of cars’ travelling comfort. In the first part of the article, an experiment was described in which particular attention was given to measuring system that is used in studying pressure distribution on the car seat bottom and backrest of the car seat. The structure of this system and usage possibilities, including basic parameters of its’ work were also discussed. In the second part, an analysis of the conducted study results was presented, with special consideration taken to dependence between particular values which characterize the pressure distribution on car seat bottom and basic anthropometric parameters of the human body
Artykuł odnosi się do aktualnej problematyki komfortu podróżowania pojazdami samochodowymi. W pierwszej części opisano przeprowadzony eksperyment, zwracając szczególną uwagę na system pomiarowy wykorzystywany do badania rozkładu nacisków na siedzisko i oparcie fotela samochodowego. Omówiono budowę tego systemu oraz możliwości wykorzystania, podając podstawowe parametry jego pracy. W części drugiej przedstawiono analizę wyników przeprowadzonych badań eksperymentalnych ze szczególnym uwzględnieniem zależności między wybranymi wielkościami charakteryzującymi rozkład nacisków na siedzisko fotela a podstawowymi parametrami antropometrycznymi ciała człowieka.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Application of anthropodynamic dummies for evaluating the impact of vehicle seat vibrations upon human body
Autorzy:: Stańczyk, T. L.
Zuska, A.
Tematy:: anthropodynamic dummy
vibratory comfort; Pokaż więcej
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Powiązania:: https://bibliotekanauki.pl/articles/281528.pdf Link otwiera się w nowym oknie
Opis:: The paper presents the anthropodynamic dummy constructed at the Department of Automotive Vehicles and Transportation of the Kielce University of Technology, Kielce, Poland. The dummy is shown at the concept and design stages, and as a final construction. The first part of the study presents structural and dynamic requirements, and also the structure and construction selected for the dummy. The vertical dynamics of the body of a seated human is accounted for by conducting detailed analysis of the variation range of mass parameters and of the dummy elastic and damping parameters. The second part of the study presents the results of experimental simulations performed for the dummy.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: An attempt of an employment of a continuous wavelet transform for evaluation of temporary comfort disturbances
Autorzy:: Grzegożek, W.
Szczygieł, J.
Król, S.
Tematy:: ride comfort analysis
continuous wavelet transform (CWT)
vibration discomfort
comfort on discrete events; Pokaż więcej
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Powiązania:: https://bibliotekanauki.pl/articles/244076.pdf Link otwiera się w nowym oknie
Opis:: This paper focuses on an attempt of an employment of a continuous wavelet transform as a tool of time-frequency analysis to identify and asses the comfort on discrete events. A short review of practical procedures for predicting vibration discomfort defined by ISO 2631-5 and BS 6041, ENV 12299 is enclosed. The results of research of tram temporary comfort disturbances are also described in the paper. The research enclosed the comfort on curve transitions and comfort on discrete events. Research was carried out in the old city centre as in this area there are a lot of curves and large number of excitations can be expected. An exemplary analysis of tram comfort using a continuous wavelet transform is presented. The signals in time intervals in which PCr and PDE indexes that have high values are analyzed. Moreover, the evaluation of comfort disturbances using wavelet transform based on Morlet mother wavelet is done. The continuous wavelet transform that was employed proves high usefulness of this method for assessment of temporary comfort disturbances. The results of Fourier transform of the signals measured are also presented in this article. Traditional methods based on the vibration dose value and frequency weighting methodsfor assessment of these vibrations are less useful in respect to non-stationary character of temporary disturbances.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Determination of comfort levels of women with urinary incontinence
Autorzy:: Yücel Çinar, Sebnem
Özdemir, Handan
Goke Arlsan, Gamze
Ergin, Eda
Gurcan, Seda
Tematy:: Women
comfort
urinary incontinence; Pokaż więcej
Wydawca:: Uniwersytet Medyczny w Białymstoku
Powiązania:: https://bibliotekanauki.pl/articles/1918962.pdf Link otwiera się w nowym oknie
Opis:: Purpose: This descriptive study was planned to investigate the comfort levels of women with urinary incontinence. Materials and methods: The study comprised 219 women with a complaint of urinary incontinence admitted to the outpatient clinic of Obstetrics and Gynecology Department of a university hospital between June – December 2015. The Sociodemographic Characteristics Questionnaire, Urinary Incontinence & Frequency Comfort Questionnaire (UIFCQ), and International Consultation on Incontinence Questionnaire Short Form (ICIQ-SF) were used. Results: The study results demonstrated that the mean score the participants obtained from the UIFCQ was 4.20 ± 0.74 and that their comfort levels were moderate. Their mean score for the ICIQ-SF was 10.41± 4.98, and urinary incontinence adversely affected their quality of life in 74% of them. While the mean UIFCQ scores were KW = 48.673, p=0.00 for the frequency of urinary incontinence, t=2.33, p=0.02 for receiving treatment, KW = 58.267, p = 0.00 for the amount of urinary leakage, KW=26.37, p=0.00 for the educational attainment, t=7.04, p=0.03 for the number of births, the mean ICIQ-SF scores were KW = 13.74, p =0.00 for the educational attainment and t = 24.02, p=0.00 for the number of births (p <0.05). Conclusions: It was determined that the comfort level of the participants with urinary incontinence was moderate, that urinary incontinence affected the quality of life and that as their comfort level increased, so did their quality of life.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Investigation of Thermal Comfort, Productivity and Lighting Conditions in Higher Education Buildings
Autorzy:: Siwczuk, Natalia
Piotrowski, Jerzy Zbigniew
Honus, Stanislav
Tematy:: lighting
productivity
thermal comfort; Pokaż więcej
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Powiązania:: https://bibliotekanauki.pl/articles/58907703.pdf Link otwiera się w nowym oknie
Opis:: Thermal comfort and lighting conditions are essential aspects of indoor environmental quality. They are considered to influence the productivity of room users. The paper presents the experimental test results of research conducted in the university educational building of Kielce University of Technology (Central Poland) using anonymous questionnaires and physical measurements of indoor air parameters with a high-precision microclimate meter. It covers the analysis of the subjective assessment of thermal sensations, acceptability and preference, as well as productivity, lighting and air quality in eleven rooms (both lecture rooms and classrooms). The study analyses the impact of the indoor environment (mostly air temperature and illuminance) on the subjective sensations of the respondents they expressed in the questionnaires. The experiments have enabled us to provide valuable insights into developing the proper indoor environmental conditions to maximise room users' comfort and productivity.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Thermal Comfort Properties of Bamboo/Silk Fabrics
Komfort termiczny i właściwości tkanin bambusowo-jedwabnych
Autorzy:: Geethanjali, T.
Prakash, C.
Ramesh Babu, V.
Jebastin Rajwin, A.
Tematy:: bamboo
comfort
knitted fabric
thermal comfort
silk
bambus
komfort
dzianina
komfort termiczny
jedwab; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Powiązania:: https://bibliotekanauki.pl/articles/1419797.pdf Link otwiera się w nowym oknie
Opis:: The thermal resistance of fabrics containing silk showed a higher value in comparison with lyocell-rich blends. The water vapour permeability, absorbency and wickability of lyocell and lyocell-rich blends were found to be superior as compared to 100% silk fabrics. With respect to aesthetic comfort properties, the drape of the lyocell rich fabrics was good in comparison with 100% silk fabrics.
W badaniu stwierdzono, że tkaniny zawierające jedwab mają wyższą wartość oporu cieplnego w porównaniu z mieszankami bogatymi w Lyocell. Stwierdzono również, że przepuszczalność pary wodnej, nasiąkliwość i podatność na skręcanie Lyocell i mieszanek bogatych w Lyocell były lepsze w porównaniu ze 100% tkaninami jedwabnymi. Pod względem komfortu estetycznego, tkanin bogatych w Lyocell wypadły lepiej, w porównaniu z tkaninami 100% jedwabnymi.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Is It Reasonable to Expect Individuals to Wear Hearing Protectors for Extended Periods?
Autorzy:: Williams, W.
Tematy:: hearing protectors
comfort
discomfort
communications; Pokaż więcej
Wydawca:: Centralny Instytut Ochrony Pracy
Powiązania:: https://bibliotekanauki.pl/articles/89843.pdf Link otwiera się w nowym oknie
Opis:: The purpose of this work is to look at the expectations and actions that exist around the use of hearing protectors. Are our expectations for the performance of hearing protectors rational and is the way we expect them to be used reasonable? Perhaps we are expecting too much of hearing protectors and their ability to effectively reduce noise exposure. Better understanding of expectations and requirements along with improvements in technology and design offer the opportunity to markedly improve on the current situation.
Dostawca treści:: Biblioteka Nauki

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