Adam Smith의 Invisible Hand에 관한 연구

서대윤 강원대학교 산업경제연구소 1998 産業과經濟 Vol.8 No.1

우리나라 라면製品의 競爭戰略에 관한 實證的 硏究

徐大允 관동대학교 기업경영연구소 1990 경영논집 Vol.9 No.-

Yoga Training Improves Metabolic Parameters in Obese Boys

서대윤,이성률,Arturo Figueroa,김형규,백영호,Yi Sub Kwak,김나리,최태훈,이병두,고경수,Byung Joo Park,Song Young Park,한진 대한약리학회 2012 The Korean Journal of Physiology & Pharmacology Vol.16 No.3

Yoga has been known to have stimulatory or inhibitory effects on the metabolic parameters and to be uncomplicated therapy for obesity. The purpose of the present study was to test the effect of an 8-week of yoga-asana training on body composition, lipid profile, and insulin resistance (IR) in obese adolescent boys. Twenty volunteers with body mass index (BMI) greater than the 95th percentile were randomly assigned to yoga (age 14.7±0.5 years, n=10) and control groups (age 14.6±1.0 years, n=10). The yoga group performed exercises three times per week at 40∼60% of heart-rate reserve (HRR) for 8 weeks. IR was determined with the homeostasis model assessment of insulin resistance (HOMA-IR). After yoga training, body weight, BMI, fat mass (FM), and body fat % (BF %) were significantly decreased, and fat-free mass and basal metabolic rate were significantly increased than baseline values. FM and BF % were significantly improved in the yoga group compared with the control group (p<0.05). Total cholesterol (TC) was significantly decreased in the yoga group (p<0.01). HDL-cholesterol was decreased in both groups (p<0.05). No significant changes were observed between or within groups for triglycerides, LDL-cholesterol, glucose, insulin, and HOMA-IR. Our findings show that an 8-week of yoga training improves body composition and TC levels in obese adolescent boys, suggesting that yoga training may be effective in controlling some metabolic syndrome factors in obese adolescent boys.

海外直接投資 決定要因에 關한 諸理論의 綜合化

徐大允 관동대학교 1986 關大論文集 Vol.14 No.1

Morning and evening exercise

서대윤,이성렬,김나리,고경수,이병두,박병주,한진 한국한의학연구원 2013 Integrative Medicine Research Vol.2 No.4

A growing body of evidence suggests that exercise may contribute to preventing pathological changes, treating multiple chronic diseases, and reducing mortality and morbidity ratios. Scientific evidence moreover shows that exercise plays a key role in improving health-related physical fitness components and hormone function. Regular exercise training is one of the few strategies that has been strictly adapted in healthy individuals and in athletes. However, time-dependent exercise has different outcomes, based on the exercise type, duration, and hormone adaptation. In the present review, we therefore briefly describe the type, duration, and adaptation of exercise performed in the morning and evening. In addition, we discuss the clinical considerations and indications for exercise training.

韓國輸出의 現況 및 當面課題에 關한 考察

徐大允 관동대학교 1985 關大論文集 Vol.13 No.2

Ⅰ. Introduction Export has been playing an important role in developing Korean economy ever since the early 1960s. But the fast-growing export has been slowing down since 1979 becasue of its structural and fundamental changes both in export industry and overseas market. In view of unique structure and position of Korean economy, export is compelled to keep growing; Korea has no natural resourses enough to maintain her economic development, and one of the most highly populated countries in the world. Korea has no choice but to continue her economic development based on export growth. This study is therefore to find out new ways to take as the second stage of export development in order to revitalize it by reviewing the export so far and analyzing the export competition power, ever-increasing protectionism prevailing worldwide. Ⅱ. Changed Overseas Market Situation 1. Ever-increasing Protectionism The world economy has been slowing down mainly due to the oil shocks of 1973 and 1979, and unstable international monetary situation since the early 1970s. Every country suffering from high unemployment and shortage of foreign exchange has been reinforcing import regulations and various trade barriers. The principal export products such as textiles, footwear, electronics, and steel products are under the various trade barriers like quota system, countervailing duty, self-regulation of export countries, etc. involving 19 major export countries. In terms of amount exported in 1980, 1981, and 1982, each 24.2%, 22.4%, and 22.3% had been exported under the influence of export regulations. But the percentage goes up much higher as 38.1%, 36.1%, and 34.7% each for 1980, 1981, and 1982 if applied only to advanced countries. Ⅲ. Structural Analysis of Export 1. Export Trend Export has been increased with incredibly high rate; U$ 55 milliion in 1962 reached to U$1 billion in 1971, U$ 10 billion in 1977, and U$ 15 billion in 1979. But the situation changed from 1980 by showing slow growth mainly because of deteriorated competition power, and worldewide recession. 2. Export Market by Commodity Mining, agricultural, and marine products played an important role in the early 1960s, but later in late 1960s labor-intensive products took over, again from mid-1970s heavy industry products started to lead the export. In the early 1960s, principal export commodities were Tungsten ores, raw silk, fresh and frozen fish, but textiles, plywood, wig led the export industry from the early 1970s. The following products were electronics, ship, iron and steel products, which still keep pace together with textils. 3. Export Market by Principal Country As of late 1983, korean goods are shipping out to 176 countries which means Korea diversified her market worldwide, virtually covering the entire world except some communist countries. Export market however is too much concentrated and dependent on the U.S.A. and Japan, which cover almost 1/2 of entire export amount. In this respect, more efforts should be placed on the development of African, Latin conutries, and Australian market. Ⅳ. Problems and Its Solution 1. Cutthroat Competition Fair competition is a advantage of free economy society, which brings better production efficiency, quality, improvement, and cost-down. However, the competition beyond the limit leads to no profit all the parties concenred. Cutthroat competition among Korean exporters has been the chronical trouble since wig export boomed in late 1960s, which can be raised as a classic case brought no benefit to exporters, importers, even consumers. Cutthroat competition means nothing but suicide. What is worse, it will eventually brings import regulations. 2. Overseas Production System This has several benefits; 1) to make it possible to avoid import regulations. 2) to be familiar with merchandising based on local marketing concept. 3) to expedite internationalization of Korean side management. 4) to accumulate experience in international division of industry. 5) to learn advanced production system, technology, market information, and management skill. 3. Practical Marketing Strategy No marketing policy has been required since export so far has been order-made. But situation has been changed in terms of commodity structure and method of export. Exporters should be market-oriented to meet consumer's requirements. From the long term standpoint, brand image should be establish in the local market. More attention should be paid to the design and packing which are the most important sales points. Merchandising should also be made based on the local market information, fashion, consumers trend, etc. In a word, exporter should create demand by himself. 4. Shift to Capital Intensive Higher Added-value Products. Labor-intensive products like textiles, footwear have been losing competitive advantage due to increased labor cost compared to that of Chins, Thailand, Malysis, Sri Lanka and the like. Greater attention should be paid to the capital intensive products in terms of better utilization of resourses, and higher added-value together with the deteriorated competitive advantage of labor-intennsive products. However, raw and intermidiate production material, and parts industry should be brought up in order to make it possible that capital intensive products can get higher added-value, and to keep competitive advantage. 5. The Second Export Drive Needed. There is a strong tendency that too much emphasis is being laid on the qualitative approach of export. No one denys the importance of improvement in export structure, profitability, and marketing strategy but the export amount must be increased to contribute to economy growth, creating job opportunity, and foreign exchanged reserve. Export amount per capita of Korea is just U$ 555 compared to U$ 1,168 of Japan, U$ 1.202 of Taiwan, not to mention of U$ 5,320 of Belgium, U$ 4,012 of Switzerland. Korean export has long way to go and be revitalized particulary in terms of growth. Ⅴ. Conclusion This study is to find out new ways to enhance export by reviewing the export by commodity, market, market, andother situations. In order to revitalize export under this situation, competitive advantages should be recovered by stabilizing wage, financing expenses, and improving quality. Market should also be diversified and shipment should be made in orderly manner, not rushing in a short period. Cutthroat competition among Korean exporters will bring loss exporters involved, and will eventually lead to no national interest. Supposing export price is raised just 1 percent for the entire export of U$ 24.4 billion (in 1983), it will add U$ 244 million. Aside from the above, more fundamental steps be required. Overseas production system will bring benefit in terms of merchandising, production technology, and practical marketing policy. At the same time, this will help avoid import barriers. Exporters should pay more attention to the marketing policy from now on, also should establish brand image which is made based on the export market sense. Sales promotion activities are needed from the long term standpoint particulary in case of consumer goods. Labor-itensive light industry products should be switched over to capital-intensive higher added value goods. But in this case, R and D, and material, parts industries should be brought up. Lastly, more attention to the export revitalization drive is needed since there is a strong tenddency that too much emphasis is paid on the domestic industry reinforcement as well as qualitative approach of export industry. But it is too early to give too much priority on the above said. More attention should be paid to the increasing export size at least for the time being.

Ursolic acid in health and disease

서대윤,이성률,허준원,노미현,이병두,고경수,곽효범,한진 대한약리학회 2018 The Korean Journal of Physiology & Pharmacology Vol.22 No.3

Ursolic acid (UA) is a natural triterpene compound found in various fruits and vegetables. There is a growing interest in UA because of its beneficial effects, which include anti-inflammatory, anti-oxidant, anti-apoptotic, and anti-carcinogenic effects. It exerts these effects in various tissues and organs: by suppressing nuclear factor-kappa B signaling in cancer cells, improving insulin signaling in adipose tissues, reducing the expression of markers of cardiac damage in the heart, decreasing inflammation and increasing the level of anti-oxidants in the brain, reducing apoptotic signaling and the level of oxidants in the liver, and reducing atrophy and increasing the expression levels of adenosine monophosphate-activated protein kinase and irisin in skeletal muscles. Moreover, UA can be used as an alternative medicine for the treatment and prevention of cancer, obesity/diabetes, cardiovascular disease, brain disease, liver disease, and muscle wasting (sarcopenia). In this review, we have summarized recent data on the beneficial effects and possible uses of UA in health and disease managements.

여자 고등학생의 일일 보수량에 따른 안정시 뇌파 차이 분석

서대윤,김태훈 한국융합과학회 2023 한국융합과학회지 Vol.12 No.1

Purpose: High school students spend a lack of physical activities at school. This study aimed to exaime the effect of daily number of steps on brainwave in female high school students. Methods: Thirty five high school students were mornitored the steps by wearing the inbody band 2 watch during daily life styles of 12 weeks and divided the groups: group A (n=10, Averaged steps < 3,500), group B (n=11, Averaged steps < 5,000 and > 6,500), and group C (n=11, Averaged steps > 7,000 and 9,000). After 12 weeks, we measured the brainwave at rest. Result: As a result of the one-way ANOVA performed to analyze the difference in brainwave at rest between the 3 groups, significant differences were found in Gamma wave (p<.05), High-Beta wave (p<.01), and SMR wave (p<.01). As a result of the ex post analysis performed, Gamma wave and High-Beta wave turned out to be higher for groups B and A than group C, and the SMR wave turned out to be higher for groups C and B than group A. Conclusion: Based on the results of this study, it may be inferred that the groups with over 5,000 steps per day, which can be represented by the amount of daily physical activities, can reduce excitement and stress in a stable condition and effectively express the brainwave that appears when they focus in a relaxed condition than the groups with less than such. Hence, it is determined that it would be necessary to develop and operate various physical activity programs and curriculum which anyone can practice in daily life to help promote the physical and brain health of the female high school students who avoid activities in school. 연구목적: 본 연구에서는 여자 고등학생의 일일 보수량에 따른 안정시 뇌파 차이를 분석함으로써 청소년들 중에서도 특히 신체활동이 부족한 여자 고등학생들의 규칙적인 일일 신체활동량의 중요성과교육적 의의를 탐색하였다. 연구방법: D광역시 H고등학교 2학년 재학생 중 연구의 취지에 동의한35명을 대상자로 선정하여 총 12주 간inbody band2 워치를 착용한 채 평소와 같이 일상생활을 하게하였고, 12주 간 총 걸은 보수량을 일일 평균 보수로 산출하여 3천 5백보 미만인 10명의 그룹을 A그룹, 5천보 이상 6천 5백보 미만인 11명의 그룹을 B그룹, 7천보 이상 9천보 미만인 11명의 그룹을 C그룹으로 분류하였다. 연구 도중 참여를 포기하길 원하는 학생 3명을 제외한 총 32명의 안정시 뇌파를측정한 후 분석하였다. 결과: 세 그룹 간의 안정시 뇌파 차이를 분석하기 위하여 일원분산분석 결과, Gamma파(p<.05), High-Beta파(p<.01), SMR파(p<.01)에서 유의한 차이가 나타났다. 사후 분석 결과Gamma파와 High-Beta파는 C그룹보다 B그룹과 A그룹이 더 높게 나타났고, SMR파는 C그룹과 B그룹이 A그룹보다 더 높게 나타났다. 본 연구 결과를 통해 일일 신체활동량으로 대표할 수 있는 일일보수량이 5천보 이상 되는 그룹이 이보다 적은 그룹보다 안정상태에서 흥분과 스트레스를 감소시키고 편안한 상태에서 집중할 때 나타나는 뇌파를 효과적으로 발현시킬 수 있을 것으로 유추할 수 있겠다. 결론: 따라서 학교 현장에서 움직임을 기피하는 여고생들의 신체 및 두뇌 건강 증진을 위해 일상생활에서 누구나 실천할 수 있는 다양한 신체활동 프로그램과 교육과정을 개발하여 운영할 필요가있다고 판단된다.

예압된 냉간단조 금형세트의 유한요소 해석 ( Finite Element Analysis of the Prestressed Cold Forging Dies )

서대윤,류찬호,이민철,전만수 대한기계학회 1998 대한기계학회 춘추학술대회 Vol.- No.-

綜合貿易商社의 營業現況과 課題에 관한 硏究

徐大允 관동대학교 기업경영연구소 1985 경영논집 Vol.3 No.-