Reference Counting 기법들에 대한 멀티코어 환경에서의 성능 확장성

이상엽(Sang Youp Rhee),김종빈(Jongbin Kim),김기황( Kihwang Kim),정형수(Hyungsoo Jung) 한국정보과학회 2018 한국정보과학회 학술발표논문집 Vol.2018 No.6

국제 전략적 제휴에서 기업 간 신뢰의 다차원성과 위험이 신뢰에 미치는 영향에 관한 연구

이상엽(Sang Youp Rhee),이병희(Byung Hee Lee),김주권(Zu Weon Kim) 한국경영학회 2012 經營學硏究 Vol.41 No.6

Throughout the business world today, the competitive landscape is rapidly changing. Innovation, new value-creating propositions, blurring industry boundaries, and intensifying competition on a global scale are all driving businesses to form new connections and alliances at an unprecedented rate. Alliances have continued to become more popular across a broad spectrum of industries, companies, and nationalities. Management scholars and practitioners are increasingly concerned with understanding what makes some alliances work so well overtime while others flounder. Research over the past decades on international strategic alliances has repeatedly argued that mutual trust is essential for successful strategic alliances. Trust is viewed as an important source of competitive advantage because it lowers transaction cost, facilitates investments in relationship assets, and leads to superior information-sharing routines. However, rarely have these concepts been measured and their implications examined. In order to investigate empirically the impact of inter-organizational trust, it is vital to accurately characterize and operationalize a trust construct. Numerous scholars have proposed alternative definitions of trust. Although a variety of trustworthiness factors can be discerned from these definitions, scholars appear to agree on two core dimensions of trust, goodwill and competence. Goodwill trust refers to the expectation that a partner intends to fulfill their role in the relationship. On the other hand, competence trust refers to the expectation that partners have the ability to fulfill their roles. The measurement of the trust in strategic alliances has been an important research topic in the field of international management. However, the validity of the underlying measures is still questionable, and no attempt has been made to estimate its validity based on multidimensionality. Therefore, this study evaluates the discriminant validity of measures of trust. In addition, the risk perspective has a prominent place in the extent literature on trust, but it suffers from being imprecise and fragmented. Therefore, we propose in this article an integrated framework of risk, trust, and performance in international strategic alliances. We hypothesize that perceived risk of strategic alliances will enhance goodwill trust and competence trust based on social exchange theory, and these two kinds of trust will enhance the performance of alliance based on previous research. We test our hypotheses with data collected from 100 international strategic alliances in Korea. Discriminant validity and reliability tests are performed to determine construct validity and reliability using factor analysis and the results of confirmatory factor analysis. The test results show that there is a clear lack of discriminant validity between goodwill trust and competence trust. Amos 6.0 is employed to estimate structural pass coefficients, The overall goodness of fit indices for the model suggest a reasonably good model fit. Our results shows that although goodwill trust and competence trust could be conceptually distinct, in strategic alliances such as those studied here, they may be so intertwined that in practice they are operationally inseparable. The findings also support that perceived risk is positively related to trust and trust have positive relationship with alliance performance. This study concludes by discussing the implications for future inter-firm research and theory development on trust formation. We suggest that in order to investigate empirically the multidimensionality of trust, strategic alliance types may be restricted in designing sampling frame. In addition, the findings also suggest that increasing perceived risks in strategic alliances create and enhance the need for trust. The social exchange perspective presented here, which has traditionally been centered on interpersonal relations, contributes to research strategic alliances.

국제전략적 제휴에서 공식적 통제와 비공시적 통제의 역할에 관한 연구

이상엽(Sang Youp Rhee),김주권(Zuk Weon Kim) 한국경영학회 2013 經營學硏究 Vol.42 No.5

With continued globalization of the world`s economies, strategic alliances have become an important element of many firms` international strategies. Joint ventures, minority equity stake,coproduction and joint research and development are just some forms of strategic alliances. Although firms increasingly rely on these strategic alliances to explore new global opportunities,few studies have examined the ways in which this collaboration form is governed. Control is a critical concept for successful management and performance of international strategic alliances. Choosing effective control is a must when managing these international relationships. Moreover, the extant literature suggests that control is a key source of confidence in partner cooperation. Firms in alliances tend to be more confident about partner cooperation when they feel they have an adequate level of control over their partners. In this paper, we review prior studies addressing control within strategic alliances, as well as strategic alliances control-performance relationship, and ultimately we attempt to increase our understanding of control mechanisms in international strategic alliances. There are two broad categories of control discussed in the literature: formal control and informal control. Formal control is viewed by organizational researchers as a performance evaluation strategy, where either processes or outcomes are measured, evaluated, and rewarded. This suggests that there are two types of formal control: process-based and outcome-based. On the other hand, informal controls differ from formal controls in that they are based on social or people strategies. One type of informal control is known as social control which utilizes organizational values, norms, and cultures to encourage desirable behavior. Process control provides an effective means to garner partner support, guard against opportunism,and develop a long-term relationship because this control method signals the importance of the alliance to the focal firm and the willingness to share risks. On the other hands, output control reflects the extent to which an alliance firm emphasizes bottom-line results. Sole reliance on this control would reflect an exclusive concern with bottom line, irrespective of the manner in which an alliance firm achieves the results. Also this control provides a compelling individual motivation in that non-producers receive no compensation. However, empirical studies have shown mixed support for the effects of controls on alliance performance. Firms, under a “more control is better” presumption, often hedge their bets by simultaneously using formal and informal controls to govern international strategic alliances. In other words,some researchers contend that formal and informal controls may be complements. However,other researchers who view formal and informal controls as substitutes believe that informal control such as social control based on concrete interfirm trust may govern interfirm exchange effectively. Accordingly, if trust between partners is sufficiently strong to support the use of informal control, the combined use of formal control with informal control could hardly be economical. Therefore, it can be said that there is considerable disagreement about whether the use of one strengthens or diminishes the benefits of the other. Using data from 100 strategic alliances in e-business, it is shown that while process control has positive effects, output control has negative effects on alliance performance. And Informal control plays no facilitating role for process control. In other words, our results support that formal and informal controls function as substitutes in explaining cooperation performance. In addition, we can not find support for institutional explanations of the use of informal control for the alliances with emerging economies firms.

국제 전략적 제휴에서 통제기구와 신뢰가 제휴의 위험에 미치는 영향에 관한 연구

이재유(Jae-You Lee),이상엽(Sang-Youp Rhee),이병희(Byung-Hee Lee) 국제e-비즈니스학회 2010 e-비즈니스 연구 Vol.11 No.1

비휘발성 메모리를 이용한 빠르고 지속성 있는 저장장치 모듈 설계 및 구현

장형원 ( Hyeongwon Jang ),이상엽 ( Sang Youp Rhee ),조광일 ( Kwangil Cho ),정형수 ( Hyungsoo Jung ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.2

데이터베이스 시스템의 트랜잭션 로깅이나 파일 시스템의 저널링에서 데이터 저장시 입출력 동기화(Synchronous I/O)는 올바른 프로그램 동작에 필수적이다. 하지만 입출력 동기화로 인한 프로그램의 지연 혹은 기다림은 응용 프로그램 성능의 저하를 가져온다. 본 논문에서는 차세대 저장장치인 비휘발성 메모리를 사용하여 지속성을 보장하며 쓰기 연산의 응답성을 개선하는 사용자 수준의 스토리지 모듈을 제안하고 기존의 동기화된 쓰기 연산과 성능을 비교하였다. 특히 멀티코어 환경에서 동시에 들어오는 여러 입출력 쓰기 연산 요청에 대하여 효율적으로 처리하였다.

한류가 한국 화장품 브랜드의 이미지에 미치는 영향

한충민(Choong Min Han),진희(Xi Chen),이상엽(Sang Youp Rhee) 한국경영학회 2011 經營學硏究 Vol.40 No.4

This study is intended to empirically examine how the Korean wave in China affects Chinese consumers` images of Korean cosmetics brands. Specifically it is proposed that the Korean wave positively influences images of Korean cosmetics brands through favorable Korean images and favorable attitudes toward advertisements featuring Korean drama stars. Many Korean marketers, in order to captialize on goodwill built through popular Korea TV dramas and stars, have employed TV advertising featuring Korean TV stars. In other words, the Korean Wave in China may lead to Chinese favorable perceptions of Korean brands through Korean wave advertising. On the other hand, one can argue that the Korean wave can lead to Chinese favorable images toward Korean brands without Korean wave advertising. the Korean wave can lead to favorable images of Korea, which may influence Chinese perceptions of Korean brands throuhg country-of-origin effects. Therefore, we examine two possible paths on how the Korean wave may affect Chinese images of Korean cosmetic brands through Korean wave advertising and country-of-origin effects. The Korean wave was examined with Chinese affections toward Korean television dramas and drama stars. A structural model was proposed to test these propositions. Surveys were conducted with 181 young female Chinese in Peking. The respondents were mostly graduate students from two major universities in Peking. They were selected because firstly they were active users of cosmetics and secondly they were also believed to be reasonably familiar with Korean dramas and TV stars. We chose Korean stars and cosmetic brands which are quite well known to the respondents. They were Song Hye Kyo and Bae Yong Jun with Laneige and The Face Shop brands. We tested internal consistencies of the measures through Cronbach alpha coefficients and congeneric reliabilities, convergent and nomological validities through confirmatory factor analysis. We found that our measures were reasonably reliable and valid. In addition, Amos 6.0 was employed to estimate structural path coefficients. The overall goodness of fit indices for the model were reasonable good, which suggest a reasonable good fit for the proposed model. The findings suggest that Chinese women with strong affection toward Korean television dramas and stars tend to have favorable images of Korea and favorable attitudes toward advertisements featuring Korean stars. and finally positive perceptions of Korean cosmetics brands. In addition, we found that Korean drama stars showed greater influence in images of the brands that do Korean dramas. Interestingly we also found that the mediating role of Korean country image in brand attitudes were greater than that of attitudes toward advertisements features Korean drama stars. Finally, marketing implications were discussed. Our findings suggest that Korean marketers without employing Korean wave advertising featuring Korean stars may still benefit greatly from goodwill built from the Korean wave. In addition, since stars` influences are greater than TV dramas, marketers perhaps ought to concentrate more on Korean stars than the content of TV dramas in their marketing.

브랜드 글로벌성 vs. 원산지 이미지 -글로벌 브랜드는 원산지 효과에서 자유로운가?

한충민 ( C. Min Han ),이슬기 ( Seul Li Lee ),이상엽 ( Sang Youp Rhee ) 한국국제경영학회 2011 國際經營硏究 Vol.22 No.4

본 연구는 소비자가 지각하는 브랜드 글로벌성과 원산지 이미지가 외국 브랜드 평가에 미치는 영향을 실증적으로 분석한 연구이다. 특히 브랜드 글로벌성이 원산지 이미지의 효과를 조절하는지 즉 글로벌성이 높은 브랜드는 낮은 브랜드에 비해 원산지 효과가 낮아지는지를 검증하고자 하였다. 이를 위해 20-30대 성인을 중심으로 일본 자동차 4개 브랜드를 대상으로 설문조사를 실시하였다. 실증 분석 결과, 우선 브랜드 글로벌성이 소비자의 브랜드 평가에 미치는 영향은 유의한 반면에, 원산지 이미지는 유의하지 않았다. 이와 함께 브랜드 글로벌성이 원산지 이미지의 효과를 조절하는 경향이 있음이 발견되었다. 더 흥미로운 점은 원산지 효과가 글로벌성이 높은 브랜드에서는 나타난 반면에 글로벌성이 낮은 브랜드에서는 나타나지 않았다. 이 결과는 브랜드 글로벌성이 커지면 원산지효과가 줄어들 것이라는 일반적인 기대와 상반되는 것이다. 마지막으로 학술적인 측면뿐만 아니라 마케팅 관점에서 시사점이 논의된다. This study is intended to empirically investigate the effects of consumer perceived brand globalness and country-of-origin image on consumer evaluations of foreign brands. We hypothesize that perceived brand globalness moderates country-of-origin effects in brand effects. Surveys were carried out with adult consumers aged 20`s and 30`s on their evaluations of four Japanese automobile brands. Our findings support the effects of perceived brand globalness, but not country-of- origin effects in consumer evaluation of foreign brands. More importantly, we found that perceived brand globalness moderates the country-of-origin effects. This finding contrasts with our expectation from previous research. Finally, academic and practical implications are discussed.