The Experts below are selected from a list of 276 Experts worldwide ranked by ideXlab platform
A.j.h. Frijns - One of the best experts on this subject based on the ideXlab platform.
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Local Clothing thermal properties of typical office ensembles under realistic static and dynamic conditions
International Journal of Biometeorology, 2018Co-Authors: S Stephanie Vesela, Agnes Psikuta, A.j.h. FrijnsAbstract:An accurate local thermal sensation model is indispensable for the effective development of personalized conditioning systems in office environments. The output of such a model relies on the accurate prediction of local skin temperatures, which in turn depend on reliable input data of the local Clothing thermal resistance and Clothing area factor. However, for typical office Clothing ensembles, only few local datasets are available in the literature. In this study, the dry thermal resistance was measured for 23 typical office Clothing ensembles according to EN-ISO 15831 on a sweating agile manikin. For 6 ensembles, the effects of different air speeds and body movement were also included. Local Clothing area factors were estimated based on 3D scans. Local differences can be found between the measured local insulation values and local area factors of this study and the data of other studies. These differences are likely due to the garment Fit on the manikin and reveal the necessity of reporting Clothing Fit parameters (e.g., ease allowance) in the publications. The increased air speed and added body movement mostly decreased the local Clothing insulation. However, the reduction is different for all body parts, and therefore cannot be generalized. This study also provides a correlation between the local Clothing insulation and the ease allowance for body parts covered with a single layer of Clothing. In conclusion, the need for well-documented measurements is emphasized to get reproducible results and to choose accurate Clothing parameters for thermo-physiological and thermal sensation modeling.
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Measurements of local Clothing resistances and local area factors under various conditions
2017Co-Authors: S Stephanie Vesela, Agnes Psikuta, Boris Kingma, A.j.h. FrijnsAbstract:The local dry thermal resistances of typical office ensembles was measured according to EN- ISO 15831 on a sweating agile manikin for different air speeds and body movement. Also, the local Clothing area factors were estimated based on 3D scans. The results of five representative office outFits are discussed in this paper. Measured local insulation values and estimated local area factors differ from data in other studies. Since literature data are mostly between values obtained for regular and loose Fit in this study, this difference is likely due to the garment Fit on the manikin and reveals the necessity of reporting Clothing Fit parameters (e.g. ease allowance) in the publications. The increased air speed and body movement mostly decrease the local dry thermal insulation. We emphasize the need for well documented garment parameters and measurements to get reproducible results and to choose accurate Clothing parameters for thermo-physiological and thermal sensation modelling.
Guowen Song - One of the best experts on this subject based on the ideXlab platform.
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effects of moisture content and Clothing Fit on Clothing apparent wet thermal insulation a thermal manikin study
Textile Research Journal, 2016Co-Authors: Guowen Song, Faming Wang, René M. Rossi, Wen Shi, Simon AnaheimAbstract:‘Wet’ thermal insulation, defined as the thermal insulation when Clothing gets partially or fully wet, is an important physical parameter to quantify Clothing thermal comfort. As the water/sweat gradually occupies the intra-yarn and inter-yarn air voids of the Clothing material, the Clothing intrinsic thermal insulation will be diminished and, hence, contribute to the loss of total insulation. In cold conditions, a loss in total thermal insulation caused by sweating may result in an inadequate thermal insulation to keep thermal balance and eventually leads to the development of hypothermia and cold injuries. Therefore, it is imperative to investigate the effect of Clothing Fit and moisture content on Clothing ‘wet’ insulation. In this study, the ‘wet’ thermal insulation of three two-layer Clothing ensembles was determined using a Newton thermal manikin. Four levels of moisture content were added to the underwear: 100, 200, 500 and 700 g. The Clothing apparent ‘wet’ thermal insulation under different testi...
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A novel approach for Fit analysis of thermal protective Clothing using three-dimensional body scanning.
Applied Ergonomics, 2014Co-Authors: Guowen SongAbstract:Abstract The garment Fit played an important role in protective performance, comfort and mobility. The purpose of this study is to quantify the air gap to quantitatively characterize a three-dimensional (3-D) garment Fit using a 3-D body scanning technique. A method for processing of scanned data was developed to investigate the air gap size and distribution between the Clothing and human body. The mesh model formed from nude and clothed body was aligned, superimposed and sectioned using Rapidform software. The air gap size and distribution over the body surface were analyzed. The total air volume was also calculated. The effects of fabric properties and garment size on air gap distribution were explored. The results indicated that average air gap of the Fit Clothing was around 25–30 mm and the overall air gap distribution was similar. The air gap was unevenly distributed over the body and it was strongly associated with the body parts, fabric properties and garment size. The research will help understand the overall Clothing Fit and its association with protection, thermal and movement comfort, and provide guidelines for Clothing engineers to improve thermal performance and reduce physiological burden.
S Stephanie Vesela - One of the best experts on this subject based on the ideXlab platform.
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Local Clothing thermal properties of typical office ensembles under realistic static and dynamic conditions
International Journal of Biometeorology, 2018Co-Authors: S Stephanie Vesela, Agnes Psikuta, A.j.h. FrijnsAbstract:An accurate local thermal sensation model is indispensable for the effective development of personalized conditioning systems in office environments. The output of such a model relies on the accurate prediction of local skin temperatures, which in turn depend on reliable input data of the local Clothing thermal resistance and Clothing area factor. However, for typical office Clothing ensembles, only few local datasets are available in the literature. In this study, the dry thermal resistance was measured for 23 typical office Clothing ensembles according to EN-ISO 15831 on a sweating agile manikin. For 6 ensembles, the effects of different air speeds and body movement were also included. Local Clothing area factors were estimated based on 3D scans. Local differences can be found between the measured local insulation values and local area factors of this study and the data of other studies. These differences are likely due to the garment Fit on the manikin and reveal the necessity of reporting Clothing Fit parameters (e.g., ease allowance) in the publications. The increased air speed and added body movement mostly decreased the local Clothing insulation. However, the reduction is different for all body parts, and therefore cannot be generalized. This study also provides a correlation between the local Clothing insulation and the ease allowance for body parts covered with a single layer of Clothing. In conclusion, the need for well-documented measurements is emphasized to get reproducible results and to choose accurate Clothing parameters for thermo-physiological and thermal sensation modeling.
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Measurements of local Clothing resistances and local area factors under various conditions
2017Co-Authors: S Stephanie Vesela, Agnes Psikuta, Boris Kingma, A.j.h. FrijnsAbstract:The local dry thermal resistances of typical office ensembles was measured according to EN- ISO 15831 on a sweating agile manikin for different air speeds and body movement. Also, the local Clothing area factors were estimated based on 3D scans. The results of five representative office outFits are discussed in this paper. Measured local insulation values and estimated local area factors differ from data in other studies. Since literature data are mostly between values obtained for regular and loose Fit in this study, this difference is likely due to the garment Fit on the manikin and reveals the necessity of reporting Clothing Fit parameters (e.g. ease allowance) in the publications. The increased air speed and body movement mostly decrease the local dry thermal insulation. We emphasize the need for well documented garment parameters and measurements to get reproducible results and to choose accurate Clothing parameters for thermo-physiological and thermal sensation modelling.
Jasmit Kaur - One of the best experts on this subject based on the ideXlab platform.
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A Study to Explore Fit Perceptions and Satisfaction with Apparel Fit in Ready-To-Wear Garments amongst Young Adults
International Journal of Research, 2018Co-Authors: Samita Gupta, Jasmit KaurAbstract:The study was undertaken to enhance understanding of general satisfaction amongst young adult consumers aged between 20 to 30 years with ‘Ready-to-Wear’ apparel Fit. The respondents were limited to 100 females and 100 males, belonging to the city of Kolkata and were subjected to a structured questionnaire for their responses. This study seeks to refine the concept of apparel Fit and satisfaction with Fit in general, to qualitatively investigate consumers’ perceptions of apparel Fit and the factors that may affect Fit satisfaction, and to develop an understanding of consumers’ overall satisfaction with Fit. The general perceptions of Clothing Fit satisfaction may be affected by a multitude of factors which come into play when consumers evaluate whether or not garment Fit meets their expectations, both during and after purchasing garments. The study also concentrates on respondents’ demographic characteristics, such as age (for example, young adults), gender and body size. Chi-Square test was done to show that Fit satisfaction did not have any association with body shape of the consumer. Findings on differences in Fit satisfaction between genders indicated no distinguishable differences in satisfaction with Fit regarding ‘Ready-to-Wear’ garments. A good Fit resulted both in, and from, a comfortable feeling. Results showed that physical comfort related to Fit was achieved when the consumer was satisfied with physical and functional Fit, including aspects such as tightness, length, size, and freedom of movement. Psychological Fit was achieved when the consumer was satisfied with aesthetic Fit. The study provides a theoretical basis for future consumer behaviour research, by conceptualizing consumers’ definition of apparel Fit, and by identifying and quantifying key drivers of apparel Fit satisfaction in general.
Gary D. Foster - One of the best experts on this subject based on the ideXlab platform.
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Similarities and Differences between Weight Loss Maintainers and Regainers: A Qualitative Analysis
Journal of the Academy of Nutrition and Dietetics, 2012Co-Authors: Naomi R. Reyes, Tracy L. Oliver, Alicia A. Klotz, Caitlin Lagrotte, Stephanie S. Vander Veur, Amy Virus, Brooke A. Bailer, Gary D. FosterAbstract:Abstract Obesity is remarkably refractory to treatment. Despite a plethora of quantitative studies, little qualitative research has been conducted on the topic of weight loss maintenance. This study used six focus groups to explore which factors promoted or prevented maintaining weight loss among a diverse, urban population. Eligible participants were those who had intentionally lost ≥10% of their body weight in the past 2 years and were categorized as either "regainers" or "maintainers" using self-reported length of weight maintenance and amount (%) regained. Regainers had regained ≥33% of their weight loss and maintainers had regained ≤15%. Participants (n=29) were predominantly African-American (58.6%) females (65.6%) with a mean age of 46.9±11.2 years. Four themes reflected similarities between regainers and maintainers, and four reflected differences between the groups. Both groups experienced lapses, used Clothing Fit for feedback on weight status, desired greater support during maintenance, and decreased self-monitoring of food intake over time. When compared with regainers, maintainers more often continued strategies used during weight loss, weighed themselves regularly, and used productive problem-solving skills and positive self-talk. Regainers experienced greater difficulty independently continuing food and exercise behaviors during maintenance, identifying decreased accountability and waning motivation as barriers. These findings suggest that weight loss maintenance efforts can be improved by addressing challenges such as long-term self-monitoring and problem-solving skills, and that maintenance success might depend on how people think as much as what they do.