scholarly journals Theoretical aspects of evaluation breathability clothing for determining heat balance of the human body

2013 ◽  
pp. 179-195
Author(s):  
Sergiy Kovalchuk
Keyword(s):  
Hydraulic Resistance ◽  
Human Body ◽  
Heat Balance ◽  
Aerodynamic Drag ◽  
Mutual Influence ◽  
Annular Channel ◽  
Estimation Algorithm ◽  
Accurate Method ◽  
Bioclimatic Index ◽  
Iterative Equations

At the moment, there is no accurate method of determining the thermal balance of the human body, especially given breathability clothing. The main objective is to provide estimation algorithm air flow in the annular channel induced aerodynamic drag force. The developed method is based on the determination of the hydraulic resistance wall clothes and description of the appropriate non-linear effects in the annular channel using iterative equations. Total hydraulic resistance of the wall apparel determined by computing the local hydraulic resistance based on their mutual influence and resistance layers of fabric with the bellhop or staggered placement of layers. Key words: hydraulic resistance, bioclimatic index, breathability clothing, the iterative equation, the heat balance of the human body.

Microfluidics of blood in blood vessels stenosis

2016 ◽  
Vol 11 (2) ◽  
pp. 210-217 ◽  
Author(s):  
A.T. Akhmetov ◽  
A.A. Valiev ◽  
A.A. Rakhimov ◽  
S.P. Sametov ◽  
R.R. Habibullina
Keyword(s):  
Blood Flow ◽  
Blood Vessels ◽  
Hydraulic Resistance ◽  
Microfluidic Device ◽  
Human Body ◽  
Vascular System ◽  
Hydrodynamic Conditions ◽  
Microstructure Change ◽  
Healthy Part

It is mentioned in the paper that hydrodynamic conditions of a flow in blood vessels with the stenosis are abnormal in relation to the total hemodynamic conditions of blood flow in a vascular system of a human body. A microfluidic device developed with a stepped narrowing for studying of the blood flow at abnormal conditions allowed to reveal blood structure in microchannels simulating the stenosis. Microstructure change is observed during the flow of both native and diluted blood through the narrowing. The study of hemorheological properties allowed us to determine an increasing contribution of the hydraulic resistance of the healthy part of the vessel during the stenosis formation.

Heat balance model for a human body in the form of wet bulb globe temperature indices

2018 ◽  
Vol 71 ◽  
pp. 1-9 ◽  
Author(s):  
Tomonori Sakoi ◽  
Tohru Mochida ◽  
Yoshihito Kurazumi ◽  
Kohei Kuwabara ◽  
Yosuke Horiba ◽  
...  
Keyword(s):  
Human Body ◽  
Heat Balance ◽  
Balance Model ◽  
Wet Bulb Globe Temperature ◽  
Temperature Indices ◽  
Globe Temperature

scholarly journals James Joyce and the Epiphanic Inscription: Towards an Art of Gesture as Rhythm

Humanities ◽  
2018 ◽  
Vol 7 (4) ◽  
pp. 109
Author(s):  
Alberto Tondello
Keyword(s):  
James Joyce ◽  
Human Body ◽  
Mutual Influence ◽  
The Body ◽  
The Mind ◽  
The Relationship ◽  
Shed Light

In Agency and Embodiment, Carrie Noland describes gesture as “a type of inscription, a parsing of the body into signifying and operational units”, considering it as a means to read and decode the human body. Through an analysis of James Joyce’s collection of Epiphanies, my paper will examine how gesture, as a mode of expression of the body, can be transcribed on the written page. Written and collected to record a “spiritual manifestation” shining through “in the vulgarity of speech or gesture, or in a memorable phase of the mind itself”, Joyce’s Epiphanies can be considered as the first step in his sustained attempt to develop an art of gesture-as-rhythm. These short pieces appear as the site in which the author seeks, through the medium of writing, to negotiate and redefine the boundaries of the physical human body. Moving towards a mapping of body and mind through the concept of rhythm, and pointing to a collaboration and mutual influence between interiority and exteriority, the Epiphanies open up a space for the reformulation of the relationship between the human body and its environment. Unpacking the ideas that sit at the heart of the concept of epiphany, the paper will shed light on how this particular mode of writing produces a rhythmic art of gesture, fixing and simultaneously liberating human and nonhuman bodies on the written page.

scholarly journals Hydraulic resistance of an annular channel with a rectangular roughness on the wall

2020 ◽  
Vol 1689 ◽  
pp. 012054
Author(s):  
S Medgedem ◽  
A S Korsun ◽  
V N Fedoseev ◽  
M I Pisarevskii ◽  
Y N Pisarevskaya
Keyword(s):  
Hydraulic Resistance ◽  
Annular Channel

Hydraulic resistance and heat transfer in an annular channel with rotating flow

1971 ◽  
Vol 21 (1) ◽  
pp. 838-840
Author(s):  
A. I. Borisenko ◽  
K. F. Nechitailo ◽  
V. A. Safonov ◽  
A. I. Yakovlev
Keyword(s):  
Heat Transfer ◽  
Hydraulic Resistance ◽  
Annular Channel ◽  
Rotating Flow

Electric Heating Biogas Digester Experimental Research and Numerical Simulation of Fluent

2013 ◽  
Vol 724-725 ◽  
pp. 236-240
Author(s):  
Ling Jia ◽  
Shi Lu Xing ◽  
Rui Tian ◽  
Li Ying Wang ◽  
Song Li
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Heat Balance ◽  
Simulation Analysis ◽  
Electric Heating ◽  
Accurate Method ◽  
Dynamic Boundary Conditions ◽  
Experimental Conditions ◽  
Simulation Process ◽  
Good Agreement

In order to verify the correspondence of numerical simulation and experimental results in the electric heating biogas digester system, an electric heating biogas digester experimentdevice was established, and according to the experimental conditions, software Fluent was used to simulate the process of the heat transfer in the system. Before simulation, analyze theexperimental data through the calculation of heat balance and modify it, then use the modifiedexperimental data, compile UDF to characterize the dynamic boundary conditions, choosestandard turbulence model through the Raleigh number, numerical solving the process. Numericalsimulation results show: simulation process basically reflects the experiment, the simulation dataand experimental data are good agreement, and error within 1%. It is concluded that thenumerical simulation analysis is accurate, method is reliable.

scholarly journals Capture of 3D Human Motion Pose in Virtual Reality Based on Video Recognition

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Qiang Fu ◽  
Xingui Zhang ◽  
Jinxiu Xu ◽  
Haimin Zhang
Keyword(s):  
Virtual Reality ◽  
Fuzzy Logic ◽  
Human Body ◽  
Estimation Algorithm ◽  
Human Motion ◽  
Body Motion ◽  
Classification Model ◽  
Accuracy Rate ◽  
Motion State ◽  
Adaptive Adjustment

Motion pose capture technology can effectively solve the problem of difficulty in defining character motion in the process of 3D animation production and greatly reduce the workload of character motion control, thereby improving the efficiency of animation development and the fidelity of character motion. Motion gesture capture technology is widely used in virtual reality systems, virtual training grounds, and real-time tracking of the motion trajectories of general objects. This paper proposes an attitude estimation algorithm adapted to be embedded. The previous centralized Kalman filter is divided into two-step Kalman filtering. According to the different characteristics of the sensors, they are processed separately to isolate the cross-influence between sensors. An adaptive adjustment method based on fuzzy logic is proposed. The acceleration, angular velocity, and geomagnetic field strength of the environment are used as the input of fuzzy logic to judge the motion state of the carrier and then adjust the covariance matrix of the filter. The adaptive adjustment of the sensor is converted to the recognition of the motion state. For the study of human motion posture capture, this paper designs a verification experiment based on the existing robotic arm in the laboratory. The experiment shows that the studied motion posture capture method has better performance. The human body motion gesture is designed for capturing experiments, and the capture results show that the obtained pose angle information can better restore the human body motion. A visual model of human motion posture capture was established, and after comparing and analyzing with the real situation, it was found that the simulation approach reproduced the motion process of human motion well. For the research of human motion recognition, this paper designs a two-classification model and human daily behaviors for experiments. Experiments show that the accuracy of the two-category human motion gesture capture and recognition has achieved good results. The experimental effect of SVC on the recognition of two classifications is excellent. In the case of using all optimization algorithms, the accuracy rate is higher than 90%, and the final recognition accuracy rate is also higher than 90%. In terms of recognition time, the time required for human motion gesture capture and recognition is less than 2 s.

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