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이영철(Young-Chul Lee),김수현(Su-Heun Kim),송영호(Young-Ho Song),이태양(Tae-Yang Lee),안현식(Hyun-Sik Ahn),김인환(In-Hwan Kim),정구민(Gu-Min Jeong) 대한전기학회 2009 정보 및 제어 심포지엄 논문집 Vol.2009 No.10
휴대폰의 사용의 급증과 더불어 기술이 발전 하면서, 기존의 통신 수단으로서의 역할만이 아닌 여러 가지 수단으로 사용되고 있다. 이에 따라 새로운 기능이 접목되고 새로운 형태의 어플리케이션을 보임으로 해서 다양한 형태의 서비스가 제공이 가능 하게 되었다. 개개인의 소유인 핸드 셋에 WPAN 기능이 접목되어서 근거리 통신 서비스의 다양한 모델이 생성되고 있다.
플래시와 WIPI 플랫폼을 이용한 모바일 폰 어플리케이션 개발
이영철(Young-Chul Lee),이민철(Min-Chul Lee),이태양(Tae-Yang Lee),정구민(Gu-Min Jeong) 한국멀티미디어학회 2009 한국멀티미디어학회 학술발표논문집 Vol.2009 No.1
휴대폰의 사용의 급증과 더불어 기술이 발전 하면서, 기존의 통신 수단으로서의 역할만이 아닌 다른 여러 가지 기능을 하는 콘텐츠가 증가하고 있다. 이에 따라 각 통신사들은 많은 콘텐츠를 경쟁적으로 제공함으로 해서 이익을 창출하고, 소비자의 편의를 도모하고 있다. 이렇듯 서로 다른 통신사에서 서로 다른 플랫폼을 사용하고 그에 따른 콘텐츠를 개발함으로서 개발자들과 사용자들에게 많은 불편함을 초래 하였다. 이러한 불편함을 없애기 위해 WIPI통합 플랫폼을 이용하여 개발한다.
메밀추출물 첨가가 In Vitro 전분가수분해율 및 정상성인의 혈당반응에 미치는 영향
이명헌 ( Myung Heon Lee ),이정선 ( Jung Sun Lee ),이태헌 ( Tae Hun Lee ),구재근 ( Jae Geun Koo ),이영철 ( Young Chul Lee ),정승원 ( Seung Weon Jeong ),남궁배 ( Bae Nahmgung ),양희철 ( Hee Chul Yang ) 한국식품영양학회 2009 韓國食品營養學會誌 Vol.22 No.4
This study determined the effects of added buckwheat extract on the rate of corn starch hydrolysis in vitro as well as blood glucose responses through its supplementation in healthy subjects. The rate of corn starch hydrolysis in the presence or absence of various buckwheat extracts was determined in an in vitro enzyme/dialysis system for 2 hr. The buckwheat was extracted by water, ethanol(40%, 70%, 100%) and methanol(40%, 70%, 100%), respectively. Twenty percent(w/w) additions of the ethanol, methanol and water buckwheat extract to corn starch solution significantly reduced the starch hydrolysis at every minute for 2 hr(p<0.05). The calculated hydrolysis indices of the buckwheat extracts were in the order of 100% ethanol extract(50), 100% methanol(54), 40% ethanol(58), 40% methanol(62), 70% methanol(64), 70% ethanol(68), water (82). For the blood glucose response study, groups of 12 volunteers were given 50 g of boiled rice with or without buckwheat extract(10% and 20% of starch weight) using the 100%, 70%, and 40% ethanol extracts, respectively. The addition of each buckwheat ethanol extract significantly reduced blood glucose concentrations at three or more points during 2 hr and also reduced the mean peak rise and area under the blood glucose curve(p<0.05). The calculated glycemic index(GI) values for all ethanol buckwheat extract groups were significantly decreased compared to the control(rice). At the concentrations of 20%, the buckwheat 100% ethanol extracts lowered the GI by 68%. The 100% ethanol extract was more effective than the 70% and 40% extracts for reducing GI. Therefore, the 100% ethanol buckwheat extract would be the most therapeutically useful in modifying postprandial hyperglycemia.
가맹본부의 리더십 유형과 가맹사업자의 매출과의 관계에 관한 실증적 연구 : 관계결속의 매개효과와 동기의 조절효과를 중심으로
양회창(Yang, Hoe-Chang),이영철(Lee, Young-Chul) 한국유통과학회 2009 한국유통과학회 학술대회 논문집 Vol.2009 No.-
This study explores the relationships among franchisor's leadership style, franchisee's revenue, and commitment The main purpose of this study is when the causal relationship between leadership style and revenue to determine the mediating effect of commitment and when causal relationship between leadership style and commitment to determine the moderating effect of motivation. The results of the study show that franchisor's leadership styles are significantly related to franchisee's revenue. Although all leadership styles exhibit significant relationships with franchisee's revenue, only achievement oriented leadership style plays a significant role in the formation of franchisee's revenue. The level of franchisee's intrinsic motivation is significantly moderated between franchisor's supportive leadership style and commitment. It is also revealed that commitment exhibit complete or partial mediation effect in the relationships between franchisor's all leadership style and franchisee's revenue. Implications and future research directions are also discussed.
가맹본부의 리더십 행동유형과 가맹사업자의 관계결속에 관한 실증적 연구
양회창(Yang Hoe-Chang),이영철(Lee Young-Chul) 한국유통학회 2010 流通硏究 Vol.15 No.1
본 연구는 가맹사업자의 자기효능감에 주목하여 정부가 예비가맹사업자들을 보호하기 위해 가맹본부에 다양한 규제와 정책을 사용하는 것이 최선의 방법이 아니라는 것에 관심을 두고 있다. 본 연구에서는 경로-목표이론(path-goal theory)에서 제시한 가맹본부의 리더십 행동 유형과 가맹사업자의 관계결속의 영향관계에 있어서 가맹사업자의 특성으로 자기효능감의 조절효과를 규명하고, 실증 분석한 결과 다음과 같은 연구의 시사점을 발견할 수 있었다. 첫째, 가맹본부의 리더십 행동유형이 관계결속에 긍정적 효과를 가져 온다는 사실이 확인됨으로써 가맹본부는 가맹사업자에게 맞는 리더십 행동유형을 적용할 수 있도록 하여야 한다. 둘째, 가맹사업자의 자기효능감이 관계결속에 긍정적 효과가 있을 뿐만 아니라, 리더십 행동유형과 관계결속 사이에 상당한 조절효과가 있기 때문에 가맹본부는 가맹사업자들의 개인차(individual difference) 관리가 필요하다. 셋째, 정부는 가맹본부를 규제할 것만이 아니라 가맹본부가 가맹사업자들의 특성을 확실하게 파악하고 기업의 목표달성을 위한 정당한 통제가 가능하도록 제도적 지원을 해야 할 것이다. Franchise businesses in South Korea have contributed to economic growth and job creation, and its growth potential remains very high. However, despite such virtues, domestic franchise businesses face many problems such as the instability of franchisor's business structure and weak financial conditions. To solve these problems, the government enacted legislation and strengthened franchise related laws. However, the strengthening of laws regulating franchisors had many side effects that interrupted the development of the franchise business. For example, legal regulations regarding franchisors have had the effect of suppressing the franchisor's leadership activities (e.g. activities such as the ability to advocate the franchisor’s policies and strategies to the franchisees, in order to facilitate change and innovation). One of the main goals of the franchise business is to build cooperation between the franchisor and the franchisee for their combined success. However, franchisees can refuse to follow the franchisor's strategies because of the current state of franchise-related law and government policy. The purpose of this study to explore the effects of franchisor's leadership style on franchisee's commitment in a franchise system. We classified leadership styles according to the path-goal theory (House & Mitchell, 1974), and it was hypothesized and tested that the four leadership styles proposed by the path-goal theory (i.e. directive, supportive, participative and achievement-oriented leadership) have different effects on franchisee's commitment. Another purpose of this study to explore the how the level of franchisee's self-efficacy influences both the franchisor's leadership style and franchisee's commitment in a franchise system. Results of the present study are expected to provide important theoretical and practical implications as to the role of franchisor's leadership style, as restricted by government regulations and the franchisee's self-efficacy, which could be needed to improve the quality of the long-term relationship between the franchisor and franchisee. Quoted by Northouse(2007), one problem regarding the investigation of leadership is that there are almost as many different definitions of leadership as there are people who have tried to define it. But despite the multitude of ways in which leadership has been conceptualized, the following components can be identified as central to the phenomenon: (a) leadership is a process, (b) leadership involves influence, (c) leadership occurs in a group context, and (d) leadership involves goal attainment. Based on these components, in this study leadership is defined as a process whereby franchisor’s influences a group of franchisee’ to achieve a common goal. Focusing on this definition, the path-goal theory is about how leaders motivate subordinates to accomplish designated goals. Drawing heavily from research on what motivates employees, path-goal theory first appeared in the leadership literature in the early 1970s in the works of Evans (1970), House (1971), House and Dessler (1974), and House and Mitchell (1974). The stated goal of this leadership theory is to enhance employee performance and employee satisfaction by focusing on employee motivation. In brief, path-goal theory is designed to explain how leaders can help subordinates along the path to their goals by selecting specific behaviors that are best suited to subordinates' needs and to the situation in which subordinates are working (Northouse, 2007). House & Mitchell(1974) predicted that although many different leadership behaviors could have been selected to be a part of path-goal theory, this approach has so far examined directive, supportive, participative, and achievement-oriented leadership behaviors .And they suggested that leaders may exhibit any or all of these four styles with various subordinates and in different situations. However, due to restrictive government regulations, franchisor