scholarly journals Comprehensive model of upper human body clothing ventilation in standing and walking conditions

2018 ◽  
Vol 13 (4) ◽  
pp. 155892501882072
Author(s):  
Nagham Ismail ◽  
Nesreen Ghaddar ◽  
Kamel Ghali
Keyword(s):  
Human Body ◽  
Relative Velocity ◽  
Air Flow ◽  
Electric Circuit ◽  
Maximum Error ◽  
Body Parts ◽  
Tracer Gas ◽  
Physical Boundary Condition ◽  
Experimental Values ◽  
Physical Boundary

The ventilation of the microclimate air of the clothed human body segment is a result of (1) the air flow from the environment through the clothing open apertures, (2) the penetration of the porous clothing, or (3) air flow originating in the microclimate of the other clothed body parts. The microclimate air flow at the connections of clothed segments is named the inter-segmental ventilation and constitutes a real physical boundary condition that leads to ventilation of connected segments. In this study, a simplified electric circuit model is developed to estimate clothing ventilation based on the analogy between the air flow in the microclimate air layer and an electric circuit composed of resistance and inductance elements. The model takes into account the inter-connection between the segments for the clothed human upper part driven by difference of pressure in the microclimate air of the trunk and the upper arms. The developed model is validated using the tracer gas method applied on a walking manikin placed in a climatic chamber under windy conditions. Good agreement was found between predicted segmental ventilation and the experimental values with a maximum error of 16%. It was found that the inter-segmental ventilation is significant at high relative velocity for permeable clothing and increased with the increase in the relative velocity constituting about 30% of the arm ventilation and 14% of the trunk ventilation.

Prediction and analysis of compression behaviour of warp-knitted spacer fabric with cylindrical surface

2018 ◽  
Vol 48 (9) ◽  
pp. 1489-1504 ◽  
Author(s):  
Mrinal K Datta ◽  
B K Behera ◽  
Ashvani Goyal
Keyword(s):  
Human Body ◽  
Cylindrical Surface ◽  
Radius Of Curvature ◽  
Body Parts ◽  
Energy Effect ◽  
Compression Behaviour ◽  
Spacer Fabric ◽  
Medical Textile ◽  
Experimental Values ◽  
Spacer Fabrics

Nowadays, applications of spacer fabric cover wider areas of technical textile. It is used in the automotive textile, personal protective clothing, sports textile, foundation garments, pads for swimwear, buffer clothing, medical textile etc. It does possess good recovery to compression, high bulk with relatively lightweight and very good moisture permeability. Almost in all applications, spacer fabrics are compressed by different parts of human body. Body parts have different shapes and curvatures. In all standard methods, spacer fabric compressibility is measured by a pair of flat circular plate which cannot represent a human body. The contour of body can be assumed as cylindrical with varying radius of curvature. So, it is necessary to understand the mechanism of compression of spacer fabric with cylindrical surface in order to understand the performance of the fabric under real-world dynamics. In this research, an effort is being made to predict the compression behaviour of warp-knitted spacer fabric by flat as well as cylindrical surface. Finite Element Models were designed on Abaqus/CAE platform to meet above requirement with variable circumstances. Experimental setup was also made to analyse cylindrical and flat compression at different circumstances. Results show that flat compression and cylindrical compression are largely deferred in terms of shape of load-deformation curve and compressional energy. Effect of variables on compression behaviour was also analysed. Model results were validated with experimental values. It is found that the proposed model has got a good agreement with the experimental results.

Theoretical and Experimental Estimation of Inter-Segmental Clothing Ventilation and Impact on Human Segmental Heat Losses

2015 ◽  
Author(s):  
Nagham Bilal Ismail ◽  
Nesreen Ghaddar ◽  
Kamel Ghali
Keyword(s):  
Human Body ◽  
Flow Characteristics ◽  
Heat Losses ◽  
The Body ◽  
Thermal Manikin ◽  
Body Parts ◽  
Tracer Gas ◽  
Wind Speeds ◽  
Local Ventilation ◽  
Ventilation Rates

Air exchange between a specific garment and the environment could occur 1) through the fabric with the environment, 2) through garment apertures with the environment, and 3) between local body parts’ microclimates. The first mechanism is related to the fabric properties and the flow characteristics around the human body. The second mechanism is induced by buoyancy and pressure alteration due to external wind. The third mechanism named inter-segmental ventilation occurs between different clothing sections caused by position of apertures, relative wind, fabric permeability and microclimate size of connected clothed segments. The objective of this work is to develop a simplified accurate model that solves coupled momentum, mass and heat balances including buoyancy for the connected clothed upper human body to predict inter-segmental ventilation and assess its impact on the air flow characteristics in the microclimate layer and on local ventilation rates. This model is coupled to the bioheat model to predict the effect of the inter-segmental ventilation on the heat losses from the body and on bringing the thermal comfort. The model is validated by performing an improved experimental method on a thermal manikin using the tracer gas method at different wind speeds for permeable clothing.

Property in Human Body Parts

2020 ◽  
Author(s):  
Justine Pila
Keyword(s):  
Intellectual Property ◽  
Property Rights ◽  
Human Body ◽  
First Principles ◽  
The Political ◽  
Body Parts ◽  
Cautionary Tale ◽  
Regulatory Approach ◽  
Legal Position ◽  
The Law

This chapter surveys the current legal position concerning property in bodies and bodily materials. Of especial relevance in the current age of advanced genetic and other bio technologies, it looks beyond property in bodies and their materials ‘as such’ to consider also (a) the availability of rights of personal and intellectual property in objects incorporating or derived from them, and (b) the reliance on quasi-property rights of possession and consent to regulate the storage and use of corpses and detached bodily materials, including so-called ‘bio-specimens’. Reasoning from first principles, it highlights the practical and conceptual, as well as the political and philosophical, difficulties in this area, along with certain differences in the regulatory approach of European and US authorities. By way of conclusion, it proposes the law of authors’ and inventors’ rights as simultaneously offering a cautionary tale to those who would extend the reach of property even further than it extends currently and ideas for exploiting the malleability of the ‘property’ concept to manage the risks of extending it.

3D-printing human body parts

2017 ◽  
Vol 60 (10) ◽  
pp. 15-17 ◽  
Author(s):  
Keith Kirkpatrick
Keyword(s):  
3D Printing ◽  
Human Body ◽  
Body Parts

Polysemy of Words Expressing Human Body Parts of The Four Limb Area in Thai Language in Vietnam

2019 ◽  
Author(s):  
Thanh Ha Thi Mai ◽  
Keyword(s):  
Human Body ◽  
Fairy Tales ◽  
Language Contact ◽  
Word Meaning ◽  
Field Research ◽  
Linguistic Anthropology ◽  
Body Parts ◽  
Thai Language ◽  
Unit Of Measurement ◽  
Semantic Transformation

The nomenclature and polysemiosis of body parts has constituted a central part of linguistics, and of Linguistic Anthropology. The ramifications of such work make inroads into our understandings of many fields, including language contact, semiotics, and so forth, This current paper identifies the structures and emerging denotations of expressions of human body parts (HBPs) in Thai language, and ways in which these dimensions reflect polysemy. The study thus applies the following methods: Field research methods of linguistics, description, comparison, and collation. As sources of data, this study surveys Thai rhymes, fairy tales, riddles and riddle songs, rhyming  stories, children’s songs and linguistic data of daily speeches in the  northwest of Vietnam. The paper uses theories on word meaning and the transformation of word meaning. To aid analysis, this paper applies methods of  analyzing meaning components so to construct significative meaning structures of words expressing HBPs in Thai language, thus identifying the semantemes chosen to be the basis for the transformation. In the polysemy of  words expressing HBPs of the four limbs, the polysemy of words expressing  the following parts were studied: khèn - tay, cánh tay (arm); mễ – tay, bàn  tay (hand); khà - đùi (thigh); tìn - chân, bàn chân (leg, foot). Directions of semantic transformation of words expressing HBPs in Thai language are as  diversified and as multi-leveled as Vietnamese. Furthermore, in Thai language, there occur differences in the four scopes of semantic transformation, as compared with Vietnamese, including “people’s characteristics,” “human activities,” “nomination of things with activities like HBPs’ activities,” and “unit of measurement.” This study contributes to Linguistic Anthropology by suggesting that the polysemy of words expressing HBPs of the four limb area in Thai language will outline a list of linguistic phenomena which serve as the basis to understand cultural and national features, in the light of perception and categorization of the reality of the Thai minority with reference to Vietnamese.

Bodily Dasein and Chinese Script Components

2017 ◽  
Vol 2017 (2) ◽  
Author(s):  
Kwan Tze-wan
Keyword(s):  
Human Body ◽  
The Body ◽  
Chinese Script ◽  
Chinese Characters ◽  
Body Parts ◽  
Constitutive Principle ◽  
New Perspective ◽  
Social Environmental ◽  
The One ◽  
Definition Of

AbstractIn the Shuowen, one of the earliest comprehensive character dictionaries of ancient China, when discussing where the Chinese characters derive their structural components, Xu Shen proposed the dual constitutive principle of “adopting proximally from the human body, and distally from things around.” This dual emphasis of “body” and “things around” corresponds largely to the phenomenological issues of body or corporeality on the one hand, and lifeworld on the other. If we borrow Heidegger’s definition of Dasein as Being-in-the world, we can easily arrive at a reformulation of Xu Shen’s constitutive principle of the Chinese script as one that concerns “bodily Dasein.” By looking into various examples of script tokens we can further elaborate on how the Chinese make use not only of the body in general but various body parts, and how they differentiate their life world into material nature, living things, and a multifaceted world of equipment in forming a core basis of Chinese characters/components, upon which further symbolic manipulation such as “indication”, “phonetic borrowing”, semantic combination, and “annotative derivation”, etc. can be based. Finally, examples will be cited to show how in the Chinese scripts the human body (and its parts) might interact with other’s bodies (and their parts) or with “things around” (whether nature, living creatures, or artifacts) in various ways to cover the social, environmental, ritual, technical, economical, and even intellectual aspects of human experience. Bodily Dasein, so to speak, provides us with a new perspective of understanding and appreciating the entire scope of the Chinese script.

A Study on a Vibratory Model of a Human Body

1987 ◽  
Vol 109 (2) ◽  
pp. 148-153 ◽  
Author(s):  
S. P. Nigam ◽  
M. Malik
Keyword(s):  
Human Body ◽  
Natural Frequencies ◽  
Degree Of Freedom ◽  
Male Body ◽  
Mass System ◽  
Modeling Procedure ◽  
Experimental Values

This paper is concerned with the modeling of the human body as a spring mass system. Based on certain assumptions, an analysis for evaluating the mass and stiffness values of the model is developed. As an illustration of the modeling procedure, a 15-degree-of-freedom model of a male body is considered. The computed natural frequencies of the model are found to be within the range of available experimental values.

scholarly journals Design of Novel BELBIC Controlled Semi-Active Suspension and Comparative Analysis with Passive and PID Controlled Suspension

2021 ◽  
Vol 18 (5) ◽  
Author(s):  
Pankaj SHARMA ◽  
Vinod KUMAR
Keyword(s):  
Human Body ◽  
Degrees Of Freedom ◽  
Active Suspension ◽  
Driver Model ◽  
Ride Quality ◽  
Body Parts ◽  
Hybrid Techniques ◽  
Design Engineers ◽  
Mass Displacement

Passenger comfort, quality of ride, and handling have broughta lot of attention and concern toautomotive design engineers. These 2 parameters must have optimum balance as they have an inverse effect on each other. Researchers have proposed several approaches and techniques like PID control, fuzzy approach, GA, techniques with inspiration from nature and hybrid techniques to attain the same. A new controller based on the learning behavior of the human brain has been used for the control of semi-active suspension in this study. The controller is known as the Brain Emotional Learning-Based Intelligent Controller (BELBIC). A one-fourth model of car along with the driver model having 6 degrees of freedom (DOF) wasmodeled and simulated. The objective of the studywasto analyze the performance of the proposed controller for improving the dynamic response of the vehicle model coupled with complex biodynamic models of the human body as a passenger, making the whole dynamic system very complex to control. The performance wasanalyzed based on percentage reduction in the overshoot of the vehicle’s sprung mass as well as different human body parts when subjected to road disturbances. The proposed controller performance wascompared with the PID controller, widely used in semi-active suspension. The simulation results obtained for BELBIC controlled system for circular road bump showed that the overshoot of passenger head and body wasreduced by 18.84 and 18.82 %, respectively and reduction for buttock and leg displacement was18.87 %. The vehicle’s seat and sprung mass displacement displayedan improvement of 18.90 and 18.51 %. The overshoot of passenger's head and body displacement wasimproved by 19.79and 19.62 %,respectively, whereas improvement for buttock & leg, vehicle’s seat, and sprung mass displacement were19.81, 20.00, and 20.49 % against trapezoidal speed bump. The PID controlled suspension disclosed an improvement of 8.74, 8.53, 8.75, 11.11, 14.75 % against circular bump and 10.72, 10.33, 10.73, 11.11 and 11.75 % against trapezoidal bump for overshoot reduction of passenger head, body, buttock & leg, vehicle’s seat and sprung mass displacement, respectively. The proposed BELBIC controlled semi-active suspension outperformed the widely used PID controlled semi-active suspension and indicated asignificant improvement in the ride quality of the vehicle.

scholarly journals Somatic Lexemes in the Kartvelian Linguistic Space

2019 ◽  
Vol 5 (2) ◽  
pp. 28
Author(s):  
Rusudan Asatiani ◽  
Natia Dundua ◽  
Marine Ivanishvili
Keyword(s):  
Human Body ◽  
Human Life ◽  
Semantic Space ◽  
Historical Study ◽  
Body Parts ◽  
Semantic Field ◽  
The People ◽  
Inner Organs ◽  
Core Vocabulary ◽  
Linguistic Units

Comparative-historical study of languages makes it possible to represent the diachronic process of structuring the world and forming the corresponding concepts. The abovementioned process is inherently integral and reflected in such socio-cultural areas of human life as language, art, religion, farming, ethno-traditional customs, culture (in its broadest sense), etc. The proto-language reconstructed as a result of the comparative-historical study and the picture of its diachronic development provide some information about the genetic relations between the people speaking the corresponding related languages, about their original homeland and the directions of their historical migrations, about their knowledge, ideas and representations. This time we have analyzed the semantic field of the lexemes denoting the human body parts, which are reconstructed at the Proto-Kartvelian language and exist in the contemporary Kartvelian languages (Georgian, Megrelian, Laz, and Svan) and some dialects (notably, Gurian, Rachian, Xevsurian, and Kiziqian). Our goal is to reveal the semantic structure of the mentioned field, to analyze the respective concepts as well as to outline processes of the development and the establishment of corresponding tokens (resp. lexemes). Vocabulary denoting a human body (resp. Somatic lexemes), its parts and inner organs is a constituent part of the basic core vocabulary of a language and presumably ought to be fixed in the ancient times’ reflecting data. Analysis of the lexical units, which have been reconstructed either at the Common-Kartvelian or Georgian-Zan level on the basis of regular sound correspondences between the Kartvelian languages, allows us to highlight the main course of forming and developing the linguistic units we are concerned with; namely, the accumulation of “knowledge” had been carried out due to the process of differentiation and detailed elaboration of the human body anatomy and respectively, the corresponding semantic field, somatic vocabulary, had been underway to be enriched based on the relation of cognitively interpreted markedness. Language changes and development, formation of new categories and concepts, and consequently, creation of new linguistic units is mainly carried out as the result of detailed elaboration, further specification and partition of unmarked categories: an unmarked category undergoes the division-differentiation on the basis of formally marked oppositions that leads to the formation of new linguistic units and structures and reflects the dynamic picture of enhancement of linguistic cognition of the universe. Dialectic material enriches the semantic space even more and specifies and fills the meanings of lexemes to be studied.

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