• Journal of the Korean Society of Manufacturing Process Engineers
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• v.6 no.2
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• pp.47-51
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• 2007

Special quality of automobile clutch master cylinder(CMC) and analyzed aluminum, plastic material comparison. Efficiency of plastic master cylinder can modularize higher, light weight anger of parts, several piece parts by single parts, prove NVH(Noise, Vibration, Harshness) than aluminum master cylinder as analysis result. Also, structure is easy simplicity, exchange, maintenance costs can be reduced and decrease environmental pollution because recycling is superior. According as content of glass fiber increases, mechanical properties of matter of material increase equally and glass fiber changed variously by condition on manufacturing process. Through comparison analysis with Plastic Body development connection site, did verification.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.7 no.11
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• pp.2824-2838
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• 2013

There has been a lot of attention paid recently to analyze dynamic human gestures that vary over time. Most attention to dynamic gestures concerns with spatio-temporal features, as compared to analyzing each frame of gestures separately. For accurate dynamic gesture recognition, motion feature extraction algorithms need to find representative features that uniquely identify time-varying gestures. This paper proposes a new feature-extraction algorithm using temporal self-similarity based on a hierarchical human model. Because a conventional temporal self-similarity method computes a whole movement among the continuous frames, the conventional temporal self-similarity method cannot recognize different gestures with the same amount of movement. The proposed model-based temporal self-similarity method groups body parts of a hierarchical model into several sets and calculates movements for each set. While recognition results can depend on how the sets are made, the best way to find optimal sets is to separate frequently used body parts from less-used body parts. Then, we apply a multiclass support vector machine whose optimization algorithm is based on structural support vector machines. In this paper, the effectiveness of the proposed feature extraction algorithm is demonstrated in an application for taebo gesture recognition. We show that the model-based temporal self-similarity method can overcome the shortcomings of the conventional temporal self-similarity method and the recognition results of the model-based method are superior to that of the conventional method.

• Journal of Environmental Science International
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• v.14 no.2
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• pp.215-220
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• 2005

Thermal neutrality is not enough to achieve thermal comfort. The temperature level can be the optimal, and still people may complain. This situation is often explained by the problem of local discomfort. Local discomfort can be caused by radiant asymmetry, local air velocities, too warm and too cold floor temperature and vertical temperature difference. This temperature difference may generate thermal discomfort due to different thermal sensation in different body parts. Therefore, thermal comfort can not be correctly evaluated without considering these differences. This study investigates thermal discomfort sensations of different body parts and its effect on overall thermal sensation and comfort in air-heating room. Experimental results of evaluating thermal discomfort at different body parts in an air-heating room showed that thermal sensation on the shoulder was significantly related to the overall thermal sensation and discomfort. Although it is known that cool-head, warm-foot condition is good for comfort living, cool temperature around the head generated discomfort.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.15 no.2
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• pp.83-89
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• 2005

This study aims to compare a self-reported and expert-observed method on ergonomic risk factors of Work-related Musculoskeletal Disorders (WMSDs). The checklist was developed based on the results of previous studies, and the symptoms of WMSDs were obtained using a self-reported questionnaire from 1,029 shipyard workers. The risk factors were assessed through the self-report by workers and video analysis by ergonomists. The symptom prevalence at the low back (59.2%), shoulders (50.8 %), and knees (49.7%) were relatively higher than those at other body parts. Odds ratios (ORs) by body parts were 2.48 to 2.90 for the risk job, and the ORs were significantly different from those of the low risk job. The risk factor scores by body parts between workers and ergonomist were very high correlation(r=0.82 to 0.92). The rates of self-report from risk job were 54.0% (elbow and arm) to 72.1 % (low back), but sometimes overestimated(105.7 to 122.6%) than those by ergonomists. The checklist, developed in this study, will be an efficient tool for the evaluation of risk jobs using self-report by workers.

• Journal of the Korean Institute of Gas
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• v.16 no.1
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• pp.46-50
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• 2012

The performance of the Type3 hydrogen composite cylinder whose pressure is 70 MPa using hydrostatic cycling test equipment was evaluted in this study. It also includes the finite element method analysis on the performance of the cylinder when the pressure is applied. As a result, cylinder body parts of the Type3 hydrogen composite cylinder, which draws attention with its safe status and the lightness, was ruptured first and the same result has been found out through the finite element method. The dome knuckle and the cylinder body were proved as the weakest parts since the cylinder body parts was expanded under the pressure.

• Journal of Fashion Business
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• v.5 no.3
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• pp.49-61
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• 2001

In this study, girdle wearing was surveyed on the female college students in Seoul and Seoul satellite cities. Data were collected by convenient sampling method, and sample size was 252 subjects in 18 to 29 years. Questionnaire was composed of 5 parts: experience of girdle wearing, the preference of girdle type, degree of dissatisfaction/discomfort in wearing girdle, wear sensation evaluation of girdle fabrics, including demographic and anthropometric data. The results of surveys are as follows: Experience of girdle wearing (season of wearing girdle, main intention of wearing girdle, frequency of wearing, body part to want to be shaped by girdle) was examined. Especially body parts to be shaped by girdle were in order of abdomen > hip > thigh > waist-hip sideline. Therefore, it would be considered that female college students want to care about the shape of abdomen or hip. The long leg panty type was most preferred among the girdle types. The reason of preference of long leg panty type was cost > easiness of putting on-and-off > shaping many body parts at once. For dissatisfaction/discomfort in wearing the commercial girdles, it showed in order of poor ventilation at sweating > static electricity with outer garment > difficult breathing due to pressure > deformation after laundering.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2005.05a
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• pp.171-175
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• 2005

Automotive parts manufacturers are doing their best to strengthen the competitiveness. They are developing a large variety of new manufacturing technologies to reduce the manufacturing cost. Combined One Body Stamping(C.O.B.S) is one of the remarkable technologies to reduce production cost. C.O.B.S makes possible to form several parts together in a process using only one die set while conventional stamping demands the same number of die sets to the number of parts. But the deformation mechanism in C.O.B.S is more complicated because the interactions between blanks. So the interaction effects should be considered in the stage of initial blank shape design. In the study, a blank design method to consider the interactions between blanks was proposed and verified through the simulations and experiments. A commercial incremental FE code, LS-Dyna, was used to simulate the C.O.B.S Process. And a reverse one step FE code, Hyper Form, was used to predict initial blank shape. The boundary conditions of the reverse one step FE analysis were determined by the proposed method.

• The Journal of Korean Obstetrics and Gynecology
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• v.28 no.2
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• pp.91-108
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• 2015

Objectives : The aim of this study was to investigate the effect of Omibaekchul-san on postpartum edema in women hospitalized at korean medical postpartum care center in comparison with Saenghwa-tang. Methods : The body composition data was collected from 102 women, who took postpartum care in postpartum care center attached to Won-kwang University Jeonju Korean Medical Hospital, from March 2012 to July 2013. The data was analyzed by Body Composition Analyzer (Inbody 720). Specifically the data was composed of the Extra Cellular Fluid/Total Body Fluid (ECF/TBF), Total Body Water (TBW), Intra Cellular Water (ICW), Extra Cellular Water (ECW), Body Weight, Body Mass Index (BMI), Waist Hip Ratio (WHR), and the ECF/TBF of each body parts such as the upperlimb, lowerlimb and trunk. The body composition was measured twice during 2~8.5 days from childbirth and once again after 7~13.5 days from childbirth by Body Composition Analyzer. Results : The Omibaekchul-san -treated group showed a significant decrease of ECF/TBF, ECW, TBF, Body weight, BMI, ECF/TBF of each body parts and increase of WHR in comparison with the data of the Saenghwa-tang-treated group. In two groups, only the change of ICW was unsignificant. Conclusions : Statistically this study suggests that the Omibaekchul-san will help the quality of life of women who are in postpartum edema.

• Journal of the Korean Society of Costume
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• v.63 no.8
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• pp.27-42
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• 2013

The study was aimed to develop men's working pants patterns through the computerized 3-D virtual clothing simulation system and to verify the effects of the 3-D simulated outfit by comparing it to the images of the actual outfits. The average body measurements of South Korean men aged between 30 and 39 used for the simulation in order to generate a 3-D virtual model and to realize outfits of men's working pants for the workers in the heavy industry in South Korea. And also the preliminary questionnaire survey results on certain aspects of the working pants such as type, detailed design preference and discomforting parts were taken into consideration. Both the simulated and real images of the developed working pants were compared in terms of the ease amount according to parts of the working pants, the position of seam lines, the appearance of darts and pleats, and the effects of the fabric surface according to expertise panels' subjective 5-point scale evaluation. The results throughout the study were (1) the basic working pants item worn by subject workers were the straight one pleated pants. The most discomforting parts of the working pants were in the order of body rise, thigh, hip, waist, pants hems and knee girth. (2) the drafting factors of pants patterns differed by the men's body features, which was related to the allocation of suppression amounts between waist and hip girths into darts and hip curve amounts on the waist line level of the pants. (3) the similarity of the virtually simulated and real images of men's working pants resulted in an average of 4.5 to the ease of appearance, 4.6 to the seam lines, 4.1 to the fabric surface effects in a 5-point scale, which means that the two were highly alike.

• Journal of Korean Medical classics
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• v.12 no.2
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• pp.74-90
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• 1999

There are many chapters in "The Yellow Emperor's Internal Classics(黃帝內經)" regarding systemizing months, seasons, meridians, the internal organs(藏府), and parts of body, However it is very confusing because in every chapter, they have different standards. In "Maek'ae(脈解)" of "Plain Questions(素問)", months are related to three $\breve{U}$m and three Yang(三陰三陽). In "Kuoh'imnon(九鍼論)" of "Miraculous Pivot(靈樞)", parts of body are related to seasons and days. In "$\breve{U}$myanggyeirwol(陰陽繫日月)" of "Miraculous Pivot(靈樞)", 12 meridians are related to the Heavenly Streams & Earthly Branches(干支). In "Chinyogy$\breve{o}$ngjongnon(診要經終論)" of "Plain Questions(素問)", the internal organs(藏府) and the head are related to months. In "K$\breve{u}$mgwejin$\breve{o}$llon(金匱眞言論)" of "Plain Questions(素問)", parts of body are related to four seasons. Following statements can be concluded when analyzed with the theory of y$\breve{o}$k(易). 1. Both in "The Yellow Emperor's Internal Classics(黃帝內經)" and "Chuyok(周易)", $\breve{U}$m and Yang are thought as the basis of everything and every change that occur in this universe is by the fluctuation of Yin and Yang. This rule is also applied to our body. 2. "Maek'ae(脈解)" of "Plain Questions(素問)" is related to the theory of twelve principal divinatory symbols and "Kuoh'imnon(九鍼論)" of "Miraculous Pivot(靈樞)" is closely related to the theory of eight divinatory saymbols-direction.