천음속/초음속 압축기 익렬에서 Shock-Boundary Layer 상호작용의 수동적 제어에 의한 성능 향상 연구

김상덕,권창오,사종엽,Kim, Sang-Deok,Gwon, Chang-O,Sa, Jong-Yeop 대한기계학회 1996 大韓機械學會論文集B Vol.20 No.9

In this paper the CSCM type upwind flux difference splitting Navier-Stokes method has been applied to study the ARL-SL19 transoni $c^ersonic compressor cascade flow. First, the general characteristics of baseline cascade flow were analyzed. At freestream Mach n.1.612 and exit/inlet pressure ratio 2.15, the results from current laminar flow were compared well in suction surface with the experiment; however, not well in pressure surface. Second, numerical study of the transoni $c^ersonic compressor cascade flow demonstrated the effectiveness of a passive control by the various size cavities. A cavity under the shock foot point at the suction surface of the blades was used as a passive control. The passive control of shock-boundary layer interaction by a cavity reduced total pressure losses. The effect of cavity length and depth was studied. The total pressure loss was reduced by about 10% and the isentropic efficiency was improved slightly. The effect of cavity depth in current study(d/l = 0.05, 0.02) was not found strong. Further adequate turbulence modeling and TVD schemes would help to capture the shock more accurately and increase the effectiveness of the current shock-boundary layer interaction study using upwind flux difference splitting computational methods.thods.

생산자책임재활용제도와 종이팩

김상덕,Kim, Sang-Deok (사)한국포장협회 2008 包裝界 Vol.177 No.-

농산물 도매가격 결정 방식에 관한 연구

김상덕 ( Sang Deok Kim ),양승룡 ( Seung Ryong Yang ) 한국축산경영학회,농업정책학회(구 한국축산경영학회) 2015 농업경영정책연구 Vol.42 No.3

This study sheds light on the appropriateness of the current price determination process and seeks for alternative pricing systems using the evaluation by the commission merchants at the Garak Agricultural Market. The merchants evaluate that the auction system is better than the negotiation transaction. This can be construed that the transaction costs of the negotiation transaction are higher than those of the auction system. The government’s effort to expand the negotiation transaction can cause several problems. We also have the merchants evaluate the three auction systems. the previously executed outcry auction, the current electronic bid auction, and a new electronic auction. The results show that the current electronic bid auction is mostly preferred. This seems mainly because they are the present practice. It has shown that the new electronic auction received relatively a lower level of preference. On the other hand the new system is preferred in terms of fairness and convenience of price determination process. Therefore it calls for further studies on feasibility in the future. In addition, the Dutch auction and the Vickrey auction were fairly appreciated despite no experience of them. We finally suggest several points with respect to the agricultural pricing system in the wholesale market.

관계특유투자와 관계자본이 관계학습과 성과에 미치는 영향

김상덕(Sang Deok Kim) 한국마케팅학회 2010 마케팅연구 Vol.25 No.1

비대칭적 의존구조가 심한 유통경로에서는 건전한 거래관계 형성이 어렵고, 기능장애적인 경로관계, 기회주의적 행동이 만연하게 된다. 이러한 비대칭적 의존구조 하에서는 건전한 거래 관계 형성을 위해 약자를 보호하고, 안정적인 거래관계를 유지할 수 있는 보호 메커니즘을 연구하는 것은 중요하다. 본 연구는 이러한 보호 메커니즘을 자원기반관점을 이용하여 발견하고, 실증하고 있다. 특히, 관계특유투자와 관계자본, 그리고 관계학습을 유통경로의 중요한 자원으로 보고 이것들이 경로관계의 성과에 어떠한 영향을 미치는지 살펴보고 있다. 국내 백화점의 입점업체 250개의 백화점 납품 담당자를 대상으로 한 설문조사가 실시되었고, 구조방정식 모형 분석을 이용하여 가설검정을 실시하였다. 가설검정 결과 관계특유투자와 관계자본이 관계학습의 세가지 과정인 정보공유, 공동이해, 관계특유기억 개발 모두를 강화하였고, 관계특유기억의 개발은 두가지 유통경로의 성과인 효율성과 효과성을 강화하였다. 반면 정보공유는 성과에 영향을 미치지 않았고, 공동이해는 부분적인 영향을 미쳤다. Viewing inter-organizational learning as an important avenue for creating comparative advantage and considerable profits in relationships, scholars have focused on understanding the factors affecting inter-organizational learning and the links with performances. The extant conceptual framework of inter-organizational learning, however, links the relationship conditions between organizations directly to relationship learning outcomes, but have left the intervening learning processes virtually unexplored. In View of buyer-seller relationships as important avenues for relationship learning, scholars postulated that channel safeguarding mechanisms(i.e., relationship specific investment and relational capital) influence channel performance through intervening relationship learning processes(i.e., learning via sharing information, learning via sense making, and learning via developing relationship-specific memories). In spite of the potential value of the model of relationship learning, few have subjected it to empirical testing. According to Scholars, bilateral governance is expected to be appropriate safeguarding mechanisms to handle substantial transaction cost and dependence. Expanding on this use of safeguarding mechanisms, we focus on the concept from an RBV perspective. Although Transaction Cost Economy has emphasized Relationship Specific Investments as a source of transaction cost, resource-based view literature has emphasized RSIs as a source of competitive advantage. Some researcher have argued that RSIs have a very positive effect that can contribute substantially to organizational transaction value. This study also believes relational capital is bilateral safeguarding mechanism that can contribute to transaction value, and is considered separate from market-based and unilateral governance safeguarding mechanism. The purpose of this study is to investigate the effects of relationship safeguarding mechanisms on relationship performances, such as, relationship efficiency and relationship effectiveness, and the effects of relationship leaning processes as mediators among them. To be concrete, this paper develops a model of the antecedents of two conceptually distinct forms of relationship performances, and tests the hypothesized differential effects of relationship specific investments and relational capital on them. And this paper investigates the extent to which these relationships are mediated by three conceptually distinct forms of relationship learning processes, such as sharing information, joint sense making, and developing relationship-specific memories. The reason why this study deals with department store distribution channel is that there is very strong inter-dependence between department store and its tenants. Their strong inter-dependence makes their relationship as a corporate marketing channel system and creates an atmosphere that relationship learning occur without difficulty. For the purpose of empirical testing, 250 respondents of tenants of department store industry in Korea were surveyed and the analysis utilizing structural equation model indicated that relationship specific investments and relational capital had positive effects on three forms of relationship learning processes, and developing relationship-specific memories had positive effects on two relationship performances. On the other hand, sharing information had no effect and joint sense making had partial effects on relationship performances.

자동화자식별 시스템의 성능개선에 관한 연구

김상덕(Sang-Deok Kim),홍수기(Soo-Ki Hong),박명철(Myung-Chol Park) 한국법과학회 2003 한국법과학회 학술대회 Vol.2003 No.1

DIC를 이용한 입자 강화 복합재료의 기계적 특성 평가

김상덕(Sang Deok Kim),윤동현(Dong Hyun Yoon),전현규(Hyun Kyu Jeon),김재훈(Jae Hoon Kim),김인걸(In Gul Kim),정기연(Ki Yeon Jeong),이선영(Sun Young Lee),양희성(Hee Seong Yang) 대한기계학회 2020 大韓機械學會論文集A Vol.44 No.2

입자 강화 복합재료는 고체 추진 로켓의 연료로 사용되며, 이 복합재료는 제조 및 운송, 경화반응 중의 열응력 및 점화 시 급격한 내부 압력 상승으로 인해 그레인의 표면 또는 내부에 손상이 발생할 수 있다. 따라서 입자 강화 복합재료의 구조적 안정성을 위해 기계적 특성은 광범위한 온도 범위에서 우수해야 한다. 본 연구에서는 입자 강화 복합재료의 기계적 특성을 상온, 고온 및 저온 환경에서 굽힘과 충격시험을 수행함으로써 평가하였다. 입자 강화 복합재료의 굽힘 및 충격 거동은 상온과 비교하여 고온에서는 낮은 물성을 보였으며, 상대적으로 저온에서는 높은 물성을 보였다. 또한, 디지털 이미지 상관법을 이용하여 파손이 일어나는 과정을 변형률장의 획득과 함께 확인하였다. A particulate reinforced composite is used as a fuel for solid propulsion rockets. Damage may occur on or inside the surface of the hardened composite grain due to manufacturing and transportation, thermal stress during hardening reactions, and the rapid combustion pressure at ignition. Thus, to ensure the structural stability of the particulate reinforced composite, excellent mechanical properties are required within a wide temperature range. Therefore, in this study, the mechanical properties of a particulate reinforced composite are evaluated by conducting bending and impact tests at room temperature, high temperature, and low temperature. The bending and impact behavior of the particulate reinforced composite at various temperatures reveal low strength and stiffness at high temperatures compared to room temperature, and relatively high strength and stiffness at low temperatures. In addition, digital image correlation (DIC) shows the process of fracturing a specimen with the acquisition of strain field.

유통경로 구성원 간 고객지향적 영역초월행동의 선행변수에 관한 연구

김상덕(Sang Deok Kim) 한국경영학회 2008 經營學硏究 Vol.37 No.4

Recently, scholars of marketing channels are interested in customer oriented boundary spanning behaviors which mainly have been dealt in field of organizational behaviors. Boundary spanning is the activity by which individuals within organizations bridge external needs and provide information for internal users. In the context of this study. the author is interested in customer oriented boundary spanning behaviors(COBSB). COBSB are likely to be considered relatively more role-prescribed and those that are likely to be considered relatively more extra roles. such as. external representations. being vocal advocates to outsiders of the organization's image. goods. and services. internal influence. taking individual initiative in communications to the firm and co-workers. and oneself. and service delivery. serving customers in a conscientious. responsive. flexible. and courteous manner. However. previous empirical researches mainly have dealt with COBSB in the context of service industry focusing on the behaviors of frontline service employees. Few researches have interested in COBSB between distribution channel members, which makes scholars focus on service employee related antecedents of COBSB, such as, role stress and fairness perception. The lack of studies dealing with COBSB between distribution channel members make it difficult to understand the link between COBSB and a lot of interorganizational variables. such as. trust, commitment. dependence. transaction specific investment. opportunism, and relational norms. Hence this study try to deal with COBSB in the context of distribution channels and to test of a interorganizational model of antecedents. In short. the author proposes and tests the links between COBSB and six interorganizational constructs derived from four theoretical perspectives: (1) commitment-trust. (2) dependence. (3) transaction cost economics. and (4) relational norms. Each perspective specifies a different set and distinct causal ordering of focal constructs as the most critical for understanding interorganizational behaviors. For the purpose of empirical testing. the research was asked to professional research organization. By requesting H company which is having the most panels in distribution industry. 320 copies of questionnaires were collected during two months from December. 2007. The respondents were composed of three categories of retailers: (1) 100 of corporate retailers (sales agencies), (2) 120 of contractual retailers (franchisees), and (3) 100 of conventional retailers in Seoul. They were asked to respond to the survey via face-to-face interview conducted by a professional research company and were restricted to direct dealing authorities and manager with at least three months of dealing experience with suppliers. Data were collected through a key informant technique. The use of key informants in evaluating firm activities is consistent with prior study should not threaten measurement validity. The statistical characteristics of these 320 respondents came to the conclusion that were adequate for analysis. The analysis using path analysis indicated that trust. commitment of buyers had positive effects on COBSB. And Opportunism of suppliers had contrary effects on them. However. dependence. relational norms. and transaction specific investment affected them partially.

유통경로 내 조직간 영역초월행동에 관한 연구

김상덕(Sang Deok Kim) 한국경영학회 2007 한국경영학회 통합학술발표논문집 Vol.2007 No.8

최근 영역초월행동에 관한 관심이 늘어나고 있다. 여기서 영역초월행동은 종업원들이 사전에 정해진 역할을 넘어서 추가적으로 수행하는 행동을 의미하는데, 영역초월행동은 고객의 만족과 서비스 품질지각, 그리고 호의적인 구전활동을 강화하는데 중요한 역할을 한다. 그러나 영역초월행동이 중요한 역할을 할 것으로 기대할 수 있는 기업 간 거래관계, 특히 유통경로 구성원간 관계에서 영역초월행동에 관한 연구는 국내는 물론 해외에서도 매우 부족한 실정이라 할 수 있다. 이에 본 연구에서는 기존에 서비스 분야에서 주로 다루어졌던 영역초월행동을 유통경로 조직간 관계에서 다루었다. 특히, 본 연구는 다양한 유통경로의 조직패턴, 즉, 기업형, 계약형, 그리고 전통형 유통경로별로 영역초월행동이 어떻게 다르게 나타나는 지도 탐험적으로 살펴보았다. 자동차 대리점 200 점, 외식 프랜차이즈 가맹점 120 점, 산업자재 소매점 104 점, 총 420 개의 소매점을 대상으로 실시한 설문조사 결과 판매자의 의사소통의 질, 공정성, 마케팅 프로그램의 일관성이 구매자의 관계만족과 조직결속을 통해 영역초월행동을 강화하는 것으로 나타났다. 한편, 영역초월행동은 수직적 통합수준이 높은 계약형과 기업형 경로구조에서 더 활발하게 나타났다. Recently, both scholars and marketers have asserted the importance of boundary spanning behaviors, such as external representation, being vocal advocates to outsiders of the organization`s image, goods, and services, internal influence, taking individual initiative in communications to the firm and co-workers to improve service delivery by the organization, co-workers, and oneself, and service delivery, serving customers in a conscientious, responsive, flexible, and courteous manner. However, there is lack of study dealing with bourdary spanning behaviors bewteen organizational dyads, in which boundary spanning behaviors are expected to have important roles. The objectives of this paper is to investigate these important concerns with prior research by developing a theoretical model predicting how distinct buyer`s boundary spanning behaviors occur. To be concrete, this paper develops a seller characteristics-based model of the attitudinal antecedents of three conceptually distinct forms of boundary spanning behaviors, and tests the hypothesized differential effects of seller characteristics on the three forms of boundary spanning behaviors, and investigates the extent to which these relationships are mediated by relationship satisfaction and organizational commitment. For the purpose of empirical testing, 420 respondents of leading automobile dealers, dining franchisees, industrial material retailers in Korea were surveyed and the analysis utilizing structural equation model indicated that communication quality, fairness, and marketing program dynamism had positive effects on buyer`s boundary spanning behaviors via relationship satisfaction and organizational commitment. In addition, boundary spanning behaviors occurred more in contractural and corporate distribution channel than in conventional distribution channel.

유통경로 내 조직간 영역초월행동에 관한 연구

김상덕(Sang Deok Kim) 한국유통학회 2007 한국유통학회 학술대회 발표논문집 Vol.- No.-

최근 영역초월행동에 관한 관심이 늘어나고 있다. 여기서 영역초월행동은 종업원들이 사전에 정해진 역할을 넘어서 추가적으로 수행하는 행동을 의미하는데, 영역초월행동은 고객의 만족과 서비스 품질지각, 그리고 호의적인 구전활동을 강화하는데 중요한 역할을 한다. 그러나 영역초월행동이 중요한 역할을 할 것으로 기대할 수 있는 기업 간 거래관계, 특히 유통경로 구성원간 관계에서 영역초월행동에 관한 연구는 국내는 물론 해외에서도 매우 부족한 실정이라 할 수 있다. 이에 본 연구에서는 기존에 서비스 분야에서 주로 다루어졌던 영역초월행동을 유통경로 조직간 관계에서 다루었다. 특히, 본 연구는 다양한 유통경로의 조직패턴, 즉, 기업형, 계약형, 그리고 전통형 유통경로별로 영역초월행동이 어떻게 다르게 나타나는 지도 탐험적으로 살펴보았다. 자동차 대리점 200점, 외식 프랜차이즈 가맹점 120점, 산업자재 소매점 104점, 총 420개의 소매점을 대상으로 실시한 설문조사 결과 판매자의 의사소통의 질, 공정성, 마케팅 프로그램의 일관성이 구매자의 관계만족과 조직결속을 통해 영역초월행동을 강화하는 것으로 나타났다. 한편, 영역초월행동은 수직적 통합수준이 높은 계약형과 기업형 경로구조에서 더 활발하게 나타났다. Recently, both scholars and marketers have asserted the importance of boundary spanning behaviors, such as external representation, being vocal advocates to outsiders of the organization's image, goods, and services, internal influence, taking individual initiative in communications to the firm and co-workers to improve service delivery by the organization, co-workers, and oneself, and service delivery, serving customers in a conscientious, responsive, flexible, and courteous manner. However, there is lack of study dealing with bourdary spanning behaviors bewteen organizational dyads, in which boundary spanning behaviors are expected to have important roles. The objectives of this paper is to investigate these important concerns with prior research by developing a theoretical model predicting how distinct buyer's boundary spanning behaviors occur. To be concrete, this paper develops a seller characteristics-based model of the attitudinal antecedents of three conceptually distinct forms of boundary spanning behaviors, and tests the hypothesized differential effects of seller characteristics on the three forms of boundary spanning behaviors, and investigates the extent to which these relationships are mediated by relationship satisfaction and organizational commitment. For the purpose of empirical testing, 420 respondents of leading automobile dealers, dining franchisees, industrial material retailers in Korea were surveyed and the analysis utilizing structural equation model indicated that communication quality, fairness, and marketing program dynamism had positive effects on buyer's boundary spanning behaviors via relationship satisfaction and organizational commitment. In addition, boundary spanning behaviors occurred more in contractural and corporate distribution channel than in conventional distribution channel.

수요부문 풍요성과 동태성이 유통경로 성과에 미치는 영향

김상덕(Sang Deok Kim),오세조(Sejo Oh) 한국유통학회 2006 流通硏究 Vol.11 No.1

장기적인 경기침체가 지속되고, 환경의 변화가 급격하게 발생하는 오늘날, 기업이 환경에 어떻게 대처하는가는 그 기업의 매우 중요한 과제가 되었다. 본 연구는 최근 그 중요성이 부각되고 있는 수요부문 환경의 풍요성과 동태성이 만족, 신뢰, 결속 등과 같은 유통경로 시스템의 성과에 어떠한 영향을 미치는지 발견하는 것을 그 목적으로 하고 있다. 특히 본 연구는 기존 연구와는 달리 유통경로 시스템의 수직적 통합 수준에 따라 환경의 영향이 어떻게 달라지는지를 규명하는데 그 구체적인 목적이 있다. 이와 같은 목적으로 기업형 유통 경로 시스템(우유 회사와 보급소), 계약형 유통경로 시스템(치킨 프랜차이즈 본부와 가맹 점), 전통형 유통경로 시스템(화장품 회사와 거래 전문점)을 대상으로 설문조사를 실시하였으며, 조절변수 회귀분석을 수행한 결과 환경의 풍요성은 유통업체의 만족, 신뢰, 결속을 강화시킨 반면, 동태성은 약화시켰고, 수직적 통합의 수준은 이러한 영향을 더욱 강화하는 역할을 하였다. In these days of severe changes in the environment and economic slump, it is indispensable for firms to cope with the environment effectively. This study is an attempt to investigate the mechanisms through which output sector munificence and dynamism affect distribution channel performances, such as, satisfaction, trust, and commitment. Especially, this study focus on moderating effects on distribution channel integration that has not been investigated in the past. For the purpose of empirical testing, 70 corporate channels, 120 contractual channels, and 100 conventional marketing channels have been selected and analyzed. According to the result from moderated regression analysis, munificence strengthens distribution channel performances, while dynamism weakens them. And integration reinforces the effects.