• 한국안전학회지
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• 제30권6호
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• pp.1-6
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• 2015

The actual condition is that environmental pollution due to the development of various industries has recently become a serious issue. An interest in improving the gas mileage is rising due to an increase in the number of vehicles in the era of high oil price in particular. In order to solve this problem, priority should be given to light-weight design of car body, However, at present, a design method enabling the conventional steel plate to be replaced is direly needed in order to guarantee passengers' safety according to excessive light-weight design of car body. In this study, in order to apply a design method that could realize fuel savings and environmental pollution prevention through an improvement in gas mileage together with meeting the safety requirements for vehicles, it was supposed that CFRP/Al composites member would be used as primary structural member. And to this end, it was intended to obtain optimum design data by experimentally implementing external impulsive load applied to the car body. According to results of impact test of CFRP/Al composites member, a collapsed shape of folding, crack, and bending occurred. So, it was possible to find that energy was observed. And in case of specimen having an angle of $90^{\circ}$ in the outermost layer and stack sequence of $[90^{\circ}{_2}/0^{\circ}2]s$, its collapsed length was shown to be short. Therefore, it was possible to find that the absorbed energy was shown to be higher by 20% or above at the maximum.

• 한국응용과학기술학회지
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• 제38권2호
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• pp.453-464
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• 2021

바쁜 일상 속에서 신체 활동량의 감소와 식생활의 서구화 등으로 인한 복부 비만의 발생률이 높아지고 있다. 따라서 체형 관리에 대한 욕구를 충족시키기 위해 시간 대비 고 효율의 관리 프로그램이 필요하다. 본 연구에서는 전기근육자극요법 (electric muscle stimulation therapy)을 활용하여 다이어트젤(슬리밍 화장품)과의 복합사용에 의하여 허리둘레 및 체지방량 (또는 복부의 지방)를 감소 효과를 촉진시켰다. 연구 대상자는 20대 성인 남녀로 다이어트젤을 허리 부위에 단순 도포를 한 후, 그 위에 EMS를 착용하여 기상 후와 취침 전에 1일 2회 20분간 마사지를 실시하였다. 실험 기간은 2주 동안 실시되었다. 지방분해 촉진 효과는 비 조영 CT를 활용하여 피하지방의 감소에 대한 관찰이 되었으며, 이와 함께 허리둘레와 체지방량 측정으로 확인되었다. 결론적으로 개발된 EMS와 다이어트젤의 동시 사용 프로그램은 약 3 cm (p<.001)의 허리둘레 감소와 약 1 kg (p<.01)의 체지방량 감소를 나타내어 허리라인 관리에 탁월한 효과가 있음을 입증하였다. 이는 EMS의 활용이 근육 자극에 의한 마사지 효과를 나타내며 다이어트젤의 흡수를 도와 지방 분해를 촉진시키는 역할을 하는 것으로 사료된다.

• 한국산학기술학회논문지
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• 제13권2호
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• pp.741-746
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• 2012

본 연구는 조리전공 남녀대학생의 식사행태 및 비만에 대한 연구로 남학생 평균 연령은 20.4세, 여학생 19.8세, 신장은 남학생 174.0 cm, 여학생 162.6 cm, 체중은 남학생 71.4 kg, 여학생 60.3 kg이었다. 평균 체지방률은 남학생 20.5%, 여학생 30.2%로 남녀학생 모두 과체중에 해당되었다. 대부분의 학생들이 본인의 체중에 유의적인 차이로 불만을 나타내었으며, 남녀학생 모두 표준형과 좀 마른형이 이상체형이라고 생각하고 있었다. 남학생이 여학생에 비해 아침을 먹지 않았고, 점심은 매일 먹는 비율이 남학생 40.7%, 여학생은 27.0%밖에 되지 않았으며, 저녁식사는 남학생의 54.8%, 여학생은 35.5%만이 매일 먹고 있어 유의적인 차이가 있었다. 식사형태는 밥류를 선호하고 야식은 주 1~2일 먹는 비율이 가장 많았으며, 식사를 하지 않는 이유로 시간이 없어서 못 먹는다는 응답이 많았다. 스트레스 시 남학생의 56.%는 평소와 같이 먹는 반면 여학생의 58.7%는 평소보다 많이 먹고 있었다.

• 디지털융복합연구
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• 제13권9호
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• pp.479-487
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• 2015

본 연구는 20대 여성의 외모만족도, 외모지향성, 외모평가 및 자아존중감을 파악하고 각 요인들이 비만스트레스에 미치는 영향을 알아보고자 시행되었다. 분석결과 20대 여성은 실제 BMI(Body Mass Index)보다 주관적 체형을 더 크게 인식하고 있었다. 대상자의 제 변수간의 상관관계를 살펴본 결과, 외모지향성(r=.386, p=<.001), 자아존중감(r=.324, p=<.001)으로 정적상관성을, 외모평가(r=-453, p=<.001), 외모만족도(r=-.560, p=<.001)는 부적상관성을 보였다. 위계적 회귀방법으로 비만스트레스에 영향을 미치는 요인을 분석한 결과, 1단계 모형에서 외모만족도 31.3%, 2단계 모형에서 외모지향성, 외모평가, 외모만족도가 45.3%, 3단계 모형에서 주관적 체형, BMI 및 제 변수가 54.7%를 설명하였다. 분석결과를 토대로 20대 여성에게 실제 정상BMI를 가진 체형이 가장 이상적인 체형임을 인식하는 교육과 삶의 지표를 외형보다 내면에 둘 수 있도록 다양한 프로그램을 마련하는 것이 20대 여성의 비만스트레스를 다소나마 줄여 줄 수 있을 것으로 사료된다.

• Asian-Australasian Journal of Animal Sciences
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• 제22권7호
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• pp.1060-1068
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• 2009

The buffalo (Bubalus bubalis) is an important contributor to milk, meat, power, fuel and leather production in many developing countries. Buffaloes can be categorized into Asian and Mediterranean buffaloes. Asian buffalo includes two subspecies known as Riverine and Swamp types. Riverine (water buffalo) and Swamp buffaloes possess different genetics (50 vs. 48 chromosomes, respectively), morphology (body frame, body weight, horn shape and skin color) and behavior (wallowing in mud or water) and thus, are reared and used for different purposes. Low per head milk yield, poor reproductive performance (seasonal breeding behavior, anestrous, and longer calving interval) and low growth rate in buffaloes have been attributed to insufficient supply of nutrients. In many parts of Asia, where the buffalo is an integral part of the food chain and rural economy, irregular and inadequate availability of quality feedstuffs and their utilization are hampering the performance of this unique animal. Balanced nutrition and better management can enhance buffalo productivity. Many efforts have been made in the last few decades to improve nutrient supply and utilization in buffaloes. Recent research on locally available feed resources such as crop residues, and industrial by-products, dietary addition of micronutrients, use of performance modifiers and use of ruminally protected fat and protein sources have shown significant potential to improve growth, milk yield and reproductive performance of buffaloes. However, a number of issues, including establishment of nutrient requirements for dairy and beef, development of buffalo calf feeding systems, nutritional management of metabolic and reproductive anomalies, and understanding and exploitation of the buffalo gut ecosystem, need to be addressed. Extensive coordinated research and extension efforts are required for improved buffalo nutrition in developing countries.

• 한국정밀공학회지
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• 제20권2호
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• pp.94-103
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• 2003

In case of environment requiring safety such as human body and requiring flexible shape, a conventional mechanical actuator system does not satisfy requirements. Therefore, in order to solve these problems. a research of various smart material such as EAP (Electro Active Polymer), EAC (Electro Active Ceramic) and SMA (Shape Memory Alloy) is in progress. Recently, the highest preferring material among various smart material is EP (Electrostictive Polymer), because it has very fast response time, powerful force and large displacement. The previous researches have been studied properties of polymer and simple control, but present researches are studied a polymer actuator. An EP (Electostrictive Polymer) actuator has properties which change variably ils shape and environmental condition. Therefore, in order to coincide with a user's purpose, it is important not only to decide a shape of actuator and mechanical design but also to investigate a efficient controller. In this paper, we constructed the control logic with an adaptive fuzzy algorithm which depends on the physical properties of EP that has a dielectric constant depending on time. It caused for a sub-actuator to operate at the same time that a sub-actuator system operation increase with a functional improvement and control efficiency improvement in each actuator, hence it becomes very important to manage it effectively and to control the sub-system which Is operated effectively. There is a limitation on the management of Main-host system which has multiple sub-system, hence it brings out the Multi-Vehicle Control process that disperse the task efficiently. Controlling the multi-dispersion system efficiently, it needs the research of Main-host system's scheduling, data interchange between sub-actuators, data interchange between Main-host system and sub-actuator system, and data communication process. Therefore in this papers, we compared the fuzzy controller with the adaptive fuzzy controller. also, we applied the scheduling method for efficient multi-control in EP Actuator and the algorithm with interchanging data, protocol design.

• 대한의용생체공학회:의공학회지
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• 제26권5호
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• pp.343-349
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• 2005

Continuously motivating people to exercise regularly is more important than finding a way out of barriers such as lack of time, cost of equipment, lack of nearby facilities, and poor weather. Our proposed system presents practicable methods of motivation through a diverse exercise aid system. The Health Improvement and Management System (all-in-one system which saves space and maintenance costs) measures and evaluates a diverse body shape analysis and physical fitness test and directs users to automated personalized exercise prescription which is prescribed by the expert system of three types of exercise templates: aerobics, anaerobics, and leisure sports. Automated personalized exercise prescriptions are built into XML based documents because the data needs to be in the form of flexible, expansible, and convertible structures in order to process various exercise templates, BIOFIT, a digital exercise trainer, monitors and provides feedback on the physiological parameters while users are working out in the gymnasium. If these parameters do not range within the prescribed target zone, the device will alarm users to control the exercise and make the exercise trainer adjust systemically the proper exercise level. Numeric health information such as the report of the physical fitness test and the exercise prescription makes people stay interested in exercising. In addition, this service can be delivered through the Internet.

• Child Health Nursing Research
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• 제9권2호
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• pp.123-130
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• 2003

Purpose: The purpose of this study was to investigate the relationship between health locus of control(HLOC) and eating behavior in obese middle school girls. Method: The sample consisted of 170 obese middle school girls in Seoul. Result: 1. The average scores of HLOC were HLOC-Internal ; 4.11, HLOC-External ; 2.45, HLOC-Chance ; 2.09. 2. The average scores of eating behavior factors were Disinhibition ; 2.69, Dietary Restraint ; 2.67, Hunger ; 2.55. 3. The HLOC-Internal and eating behavior(dietary restraint and hunger) were correlated positively. The HLOC-Chance and disinhibition was correlated positively. But HLOC-Chance and dietary restraint was correlated negatively. The HLOC-External and eating behavior(dietary restraint, disinhibition and hunger) were correlated positively. 4. There was not a significant difference in HLOC depending on the demographic characteristics(grade, degree of obesity, father & mother's body shape, existence of obese sibling). There were significant differences in HLOC-Internal and HLOC-External according to thinking about oneself who is obese or not. 5. There was not a significant difference in eating behavior depending on the demographic characteristics(grade, degree of obesity, father & mother's body shape, existence of obese sibling, perception of oneself as a obese). Conclusion: This study has shown a correlation between HLOC and eating behavior. As a result of these findings, clinical and school nurses should be involved in management and counselling of obese girls concerning individual health locus of control and eating behavior.

• 복식문화연구
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• 제5권4호
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• pp.130-158
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• 1997

This study outputs calculation of regression of each items for production of torso basic pattern according to 6 body types as the result of another study and intends to present drawing method of torso model by short measure method modified and supplied and supplied by experiments of wearing clothing. SAS(Statistical Analysis System) is used for figures management and methods for analysis used are Frequency Analysis, Means Analysis, Regression Analysis, Correlation Analysis, etc. Results are as follows. 1. Correlation analysis is used to output the size necessary for torso prototype drawing by sort measure method and waist front length, back length, crotch length, shoulder point-cerricale-shoulder point, bust circumference, waist circumference, weight, etc, are set up as representative items calculation of regression of each type is suggested. 2. In the result of experiment of the first wearing clothing intended for 5 in each type and the whole 30, to develop torso prototype drawing method by short measure method, as we find some problems of the shape and propriety of neck root circumference line, the position of shoulder point, pulling or hold armpit parts, waist circumference line, the degree of dissatisfaction is high, so the second experiment of wearing clothing is propriety of each part is improved, all items except the length and quantity of shoulder dart, waist in back bodice, clearance quantity of hip circumference, and the place of shoulder line in side bodice. So, it was modifed and supplied and then the third torso prototyped drawing method by shout measure method was suggested. The third prototype drawing method was suggested, by modifying and supplying.

• 수산해양기술연구
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• 제58권1호
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• pp.32-38
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• 2022

In this study, Target strength for multi-frequency (38 kHz, 70 kHz, 120 kHz and 200 kHz) of chub mackerel (Scomber japonicus) was estimated using by the KRM model. The body shape of the Chub mackerel was described by an X-ray system and the body length of 20 individuals ranged from 16 cm to 28 cm. The swimbladder tilt angle ranged between -8 and -14°, the maximum TS value according to the swimming angle of chub mackerel was -33.0 dB at -11°. The averaged TScm according to fork length was -66.02 dB at 38 kHz, -66.50 dB at 70 kHz, -66.00 dB at 120 kHz and -67.35 dB at 200kHz, respectively.