• 제목/요약/키워드: Logistics Analysis

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사용된 소파블록의 안전성 검토를 위한 시공단계별 충돌해석 (Impact Analyses for the Safety Checks of Used Wave Dissipation Concrete Block Considering Construction Phases)

  • 허택녕;최창호
    • 한국산학기술학회논문지
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    • 제19권10호
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    • pp.640-647
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    • 2018
  • 우리나라는 지정학적 요인으로 인해 항만수요가 증가하고, 자연재난의 강도 또한 나날이 증대되고 있기 때문에 사용중인 항만의 확장 및 증설 계획에 맞추어 이미 사용한 소파블록을 재활용할 필요성이 날로 증가하고 있다. 하지만 소파블록의 재활용을 위한 평가시스템 및 규준이 현재 마련되어 있지 않아 기술자의 경험에 의존하여 재활용 및 폐기여부를 판단하고 있기 때문에 자원의 재활용이라는 경제적인 측면에서 이는 매우 비합리적이다. 이에 본 연구에서는 소파블록의 안전성을 평가하기 위해 지상에 놓인 소파블록은 육안으로, 수중에 놓인 소파블록은 잠수에 의한 외관조사를 수행하였고, 소파블록 20개에 대하여 반발경도를 측정하고, 3개소의 콘크리트 코어를 채취한 후, 이를 기초로 소파블록의 재료적 평가를 수행하였다. 또한 사용된 소파블록은 시공단계에 따라 이동과 거치하는 과정에서 부분적으로 혹은 완전히 파손되어 본래의 기능이 상실되는 경우가 종종 발생한다. 따라서 사용된 소파블록의 안정적인 재사용 여부를 검토하기 위해 범용 유한요소 프로그램인 ADINA를 이용하여 소파블록을 3차원 유한요소로 모형화하고, 소파블록의 이동, 거치 및 시공단계에 따른 충돌해석을 수행하였다. 마지막으로 재료적 평가결과를 이용하여 수행된 시공과정이 고려된 충돌해석결과로부터 소파블록의 재활용여부를 검토할 수 있는 합리적인 평가과정과 시공방법을 각각 제안하였다. 따라서 본 논문에서 사용된 평가방법으로 소파블록을 평가하여 재활용하면 경제비용적 관점에서 소파블록의 재사용을 극대화할 수 있을 것으로 기대한다.

인천시 내항 재생의 갈등 사례 연구 (A Case Study on Conflicts Regarding the Regeneration of Incheon Inner Harbor)

  • 이범훈;정진원
    • 한국산학기술학회논문지
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    • 제21권7호
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    • pp.496-503
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    • 2020
  • 인천 내항의 경우, 오늘날 인천시가 겪고 있는 중앙정부의 도시재생 정책 관련 갈등의 대표적인 사례이다. 본 연구는 인천 내항 도시재생 과정에서 제기된 갈등 사례를 중심으로 분석하여 향후 인천시 재생 정책의 정책적 시사점과 방향성을 제시하는데 목적이 있다. 본 연구는 질적 연구이며, 갈등 전개 과정, 갈등 주체, 갈등 내용 및 성격으로 분석하여 갈등 전략을 도출하였다. 분석결과, 첫째, 중앙부처는 내항 1·8부두에 대한 명확한 계획 방향과 구상을 제시하고 있으며, 기조는 민간부문 시행자 참여를 통한 항만 재개발 사업이다. 둘째, 인천시는 도시재생을 통하여 창조도시라는 새로운 비전을 추구하고 있으며, 특히 8부두 내 노후 창고를 리모델링하여 다양한 복합문화시설로 활용하고자 한다. 셋째, 인천 항만공사는 항만 구역의 토지 소유에 대한 권리를 가지고 있으며, 공공성과 사업성의 조화를 제시하지만 사업성 효율을 최대한 높이려는 의도를 가지고 있다. 넷째, 항만물류업체와 항운 노조 등은 항만의 사업성과 함께 기존 항만의 기능이 지속할 수 있는 공간 조성을 요구하고 있다. 다섯째, 지역 주민과 시민단체들은 내항 전체를 시민에게 돌려주는 방향으로 개방해야 한다고 주장하고 있다. 이러한 갈등을 해결하기 위해서는 다음과 같은 정책적 시사점이 필요하다. 첫째, 인천 내항에 대한 재생 철학의 확립으로 인천 내항 및 주변 지역을 바람직한 방향으로 관리하기 위한 도시계획이자 행정 가이드라인의 정립이다. 둘째, 다양한 이해관계자의 참여를 통한 협력적 거버넌스의 구축이다.

영국 해상보험법에서 고지의무 위반에 대한 구제의 대안에 관한 연구 (A Study on Seeking an Alternative Approach to the Remedy for Breach of the Duty of Disclosure in English Marine Insurance Law)

  • 신건훈
    • 무역상무연구
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    • 제24권
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    • pp.25-49
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    • 2004
  • English contract law has traditionally taken the view that it is not the duty of the parties to a contract to give information voluntarily to each other. In English law, one of the principal distinctions between insurance contract law and general contract law is the existence of the duty of disclosure in insurance law. This article is, therefore, designed to analyse the scope or extent of the duty of disclosure and the remedy for breach of the duty in English marine insurance law. The main purpose of this article is also to seek the alternative remedy for the breach. The results of analysis are as following : First, the scope of the duty of disclosure is closely related to the test of materiality and the concept of a hypothetical prudent insurer. The assured is required to disclose only material circumstances subject to MIA 1906, s. 18(1). The test of materiality, which had caused a great deal of debate in English courts over 30 years, was finally settled by the House of Lords in Pan Atlantic and the House of Lords rejected the 'decisive influence' test and the 'increased risk' test, and the decision of the House of Lords is thought to accept the 'mere influence' test in subsequent case by the Court of Appeal. Secondly, an actual insurer is, in order to avoid contract, required to provide proof that he is induced to enter into the contract by reason of the non-disclosure of the assured. But this subjective test of actual inducement is somewhat meaningless in sense that English court takes the test of materiality as a starting point and assumes the presumption of inducement even in case of no clear proof on the inducement. Finally, MIA 1906, s. 18 provides expressly for the remedy of avoidance of the contract for breach of the duty of disclosure. This means rescission or retrospective avoidance of the entire contract, and the remedy is based upon a fairly crude 'all-or-nothing' approach. The remedy of rescission is too draconian from the point of view of the assured, because he can be deprived of all cover despite he is innocent perfectly. An inadvertent breach from an innocent mistake is as fatal as wilful concealment. What is, therefore, needed in English marine insurance law with respect to remedy for the breach is to introduce a more sophisticated or proportionate remedy ascertaining degrees of fault.

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메커니즘 관점에서 본 조직변신과 포스코의 혁신패턴 연구 (Mechanism-based View of Innovative Capability Building in POSCO)

  • Kim, So-Hyung
    • 유통과학연구
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    • 제11권6호
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    • pp.59-65
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    • 2013
  • Purpose - Studies of mechanism as a competitive strategy, a relatively new field in the study of strategic management research, has recently drawn the attention of the business management scholars. The literature has so far proposed the subjective-based view, environment-based view, and the resource-based view in its analyses of firm management. Hence, it is highly likely for the firm management to be reasonably thought of as a combination of and interaction among the three key elements of subject, environment, and resources this is the mechanism-based view (MBV). It is reasonable to consider firm management to be the combination of and interaction among the three key elements of subject, environment, and resources. The overall dynamic process that integrates these three elements and creates functional harmony is identified as the mechanism, the principle of firm management. Much of the extant literatures on MBV has mainly focused on case studies, a qualitative approach prone to subjectivity of the researcher, although the intuition from the study may lead to meaningful insights into a firm-specific mechanism. This study's focus is also on case analysis, but it still attempts a quantitative approach in order to reach a scientific and systematic understanding of the MBV. Research design, data, and methodology - I used both a qualitative and quantitative approach to a single model, given the complexity of the innovation processes. I conducted in-depth interviews with POSCO employees-20 from general management, two from human resources, eight from information technology, five from finance and accounting, and five from production and logistics management. Once the innovative events were selected, the interview results were double-checked by the interviewees themselves to ensure the accuracy of the answers recorded. Based on the interview, I then conducted statistical validation using the survey results as well. Results - This study analyzes the building process of innovation and the effect of the mechanism pattern on innovation by examining the case of POSCO, which has survived over the past 21 years. I apply a new analytical tool to study mechanism innovation types, perform a new classification, and describe the interrelationships among the mechanism factors. This process allows me to see how the "Subject"factor interacts with the other factors. I found that, in the innovation process of the adoption stage, Subject had a mediating effect but that the mediating effect of resource and performance was smaller than the effect of Subject on performance alone. During the implementation stage, the mediating effect of Subject increased. Conclusion - Therefore, I have confirmed that the subject utilizes resources reasonably and efficiently. I have also advanced mechanism studies: whereas the field's research methods have been largely confined to single case studies, I have used both qualitative and quantitative methods to examine the relationships among mechanisms.

The effects of store image components on consumers purchasing retailer brands in Korea

  • Chung, Lak-Chae;Cho, Young-Sang
    • 유통과학연구
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    • 제9권4호
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    • pp.15-27
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    • 2011
  • Although a huge number of academic researchers have paid considerable attention to exploring both the degree to which store image influences retailer brand customers and how to develop store personality, they have overlooked the contemporary retail context in which retailers have developed many different types of retailer brands, that is, price-oriented or quality-oriented retailer brands. Rather than focusing on the latter, much literature has looked at the former. Accordingly, even though there are many articles related to store image, a few authors have shown their interest in identifying the extent to which store personality affects customers purchasing retailer brands at lower prices. As a result, their efforts have been to illustrate the relationship between store image and consumer behaviours buying retailer brands. In that multiple retailers over the world such as E-Mart, Lotte-Mart, Tesco Korea and Tesco UK have actively introduced not only the quality-focused retailer brands that quality is better than, or equal to national brands, and prices are slightly higher than, or equal to them, but also price-focused retailer brands, academicians should make an effort to investigate how store image affects customers purchasing a quality-oriented retailer brand, comparing with previous research results. That is why the authors illustrate the extent to which store personality components influence retailer brand customers, including particularly quality-oriented retailer brand customers through an empirical research. By adopting a questionnaire method as a research technique to illuminate the relationship between store image components and retailer brand customers, research validity increases and further, data gathered through a field survey are analysed through a few statistic analysis methods, in order to minimise statistical deviations. Compared with the prior research concentrated on price-focused retailer brands, the authors have significantly shed light on customer behaviours purchasing retailer brand products with higher quality. When it comes to store personality components, the research suggests the following five items: merchandise attributes, services, physical facilities, promotions, and institutional image, considering the subcomponents mentioned by the previous research. Proposing the conceptual research model which those elements are differently hypothesised, according to retailer brand types: PR (Price-oriented Retailer brand) and QR (Quality-oriented Retailer brand), the research is proceeded. Through empirical research, the authors found that amongst the five items, only promotion influenced retailer brand customers in the Korean retailing marketplace, unlike other countries explored by many researchers, such as UK. Although much literature emphasises that those elements are closely related to retailer brand buying proneness, it is completely not fit to the Korean market. Also, research findings provide new insights into the degree of store image effects on retailer brand customers for academiciansand practitioners. Whether the retailer brand development program that a retailer has carried simultaneously both price-focused and quality-focused retailer brand types is practically profitable should be explored in the future.

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농산물도매시장 하역체계 개선을 위한 정책적 제언 : 가락시장을 중심으로 (Policy Proposal to Improve the Unloading System of the Agricultural Wholesale Market, Focusing on the Garak Market)

  • 이래협;선일석
    • 유통과학연구
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    • 제10권10호
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    • pp.25-33
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    • 2012
  • Purpose - The Garak agricultural wholesale market ('Garak Market') plays a central role in the distribution of agricultural products in Korea and is important in connecting consumers with producers. However, problems regarding inefficiencies and the high-cost structure of the wholesale market's distribution/logistical system are being raised in relation to severe competition among retailers. Furthermore, the service needs of retailers and market users are not being fulfilled due to the inconsistency of the wholesale market's functions and facilities, thus reducing the competitiveness of the market. In this regard, innovative changes are being requested of the agricultural wholesale market according to changes in the agricultural product distribution environment. In particular, the lack of unloading facilities and the outdated unloading system of the wholesale market must be improved to enhance system efficiency. Research design, data, and methodology - This study observed the problems of the unloading system of the agricultural wholesale market in order to present relevant measures for improvement. The need for unloading auctions was also researched in this study. The survey of 70 forwarders belonging to the producing district distributor association of the Garak market was conducted by post. Additionally, 20 auction dealers and 59 shippers and transporters were individually interviewed. The survey on the need for unloading auctions used five-point Likert Scales. The statistical analysis was conducted with SPSS WIN 12.0 software. Results - First, the wholesale market must employ members of the unloading labor union to allow these employees to directly manage the unloading process. Second, it is crucial to revise regulations to ensure that the principal agent pays the unloading cost according to the standard unloading cost system. Third, the vehicle auction carried out for certain vegetable products must be converted to the unloaded auction system. According to the related interviews with the wholesale market's distribution agents, whereas shippers and transporters recognized the need for unloaded auctions, auction dealers tend to have a negative view of this system. Furthermore, the stated reasons in favor of unloaded cabbage, radish, and other vegetable auctions were prevention of constraint, creation of transparent trade conditions, and reduction of corrected seller tickets. Many of the respondents answered that the transport cost reduction rate in unloaded auctions must be below 20%. Fourth, the unloading system must be mechanized and a detailed, reasonable plan must be provided to settle the existing conflict with the unloading labor union. Conclusions - The proposals in this study are expected to play an important role in improving the cargo handling system of the wholesale agricultural product market in the future. Improving the system is expected to help shore up the competitiveness of the industry. If all the related bodies closely cooperate with each other and work harder, taking advantage of the synergies created by the facility modernization project, the Garak market will play a pivotal role in the distribution of agricultural products.

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아동복지기관이 제공하는 서비스품질에 대한 서비스제공자와 이용자간의 상호지향성 (Coorientation between Service Provider and Users about Providing Service Quality by the Child Welfare Agency)

  • 엄경호;박영규
    • 산경연구논집
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    • 제10권5호
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    • pp.67-76
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    • 2019
  • Purpose - The Korean child welfare services may have different feelings between providers and users. Few studies on the child welfare service quality have been conducted and research on the coorientation model of child welfare services are nonexistent. We compared the perceptions of Korean child welfare service providers and users in this study. It will have many applications in the service quality fields by applying a coorientation model. Research design, data, and methodology - In order to enhance user satisfaction with child welfare services, around 200 samples were carried out both in Busan and Kyungsangnamdo randomly. Seven point Likert scale was used in the questionnaire. Two measurements were made to evaluate the different positions on the part of child welfare service providers and users to assess their mutual orientation. Paired t-test verification was conducted for congruency analysis, and the verification of agreement and accuracy was analyzed by independent t-tests. Results - We empirically examined the differences between the providers and the users stance. The results are as follows. We have verified the statistical significance of the difference in perception between providers and users. We also confirmed a degree of agreement, a degree of congruency, a degree of accuracy and a degree of meta agreement in the study. In the Korean child welfare service quality, the coorientation model of process quality appeared in the form of semi-dissensus, the coorientation model of results quality were shown in the form of ignorances and the coorientation model of physical environment quality were investigated in the form of semi-dissensus. Conclusion - The study concluded that users need to understand more about the providers in order to enhance the coorientation model in process quality and physical environmental quality, and the providers need to persuade the users clearly about the positive factors. To enhance the coorientation model of the result quality, it can be misunderstood by guessing that the other party will positively evaluate it. Therefore, users believe that they need to talk more clearly to the provider about the results of the korean child welfare service quality to reduce misunderstandings and to understand each other about the resulting quality.

순위가중치평균법에 의한 의사전략 결합 및 다기준의사결정 문제로의 적용 (Aggregation of Decision Inputs with Ordered Weighted Averaging Operators and Application to the Multiple Criteria Decision Making Problems)

  • 오세웅;박종민;양영훈;서기열;이철영;서상현
    • 한국항해항만학회지
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    • 제31권6호
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    • pp.537-543
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    • 2007
  • 다기준 의사결정 문제에서 요인간의 가중치 계산과 계산된 요인의 평가값 종합화는 매우 중요하다. 본 연구에서는 다기준 의사결정 문제에 있어서 의사결정자의 의사전략 결합기법과 다기준의사결정 문제로의 적용을 연구하였다. 복잡한 환경에서 의사결정을 할 때 발생되는 모호함을 해결하기 위해 주관적 의견을 결합한 퍼지지합 이론을, 다기준 문제의 요인을 퍼지값으로 계층화하기 위해 계층분석법을 적용하였다. 또한, 의사결정자의 의사전략을 결합하기 위해 순위 가중치평균법을 이용하였다. 순위가 있는 가중치 평균방법은 퍼지집합의 orness 특성을 이용하여 의사결정자의 주관적 의지를 반영할 수 있는 기법으로, 순위가중치평균(OWA) 연산자에 따른 낙관적 혹은 비관적인 정도에 따라 주관적인 의도를 반영할 수 있는 방법이다. 다기준의사결정 문제의 적용사례로서 해상교통안전을 위한 대기정박지의 위치분석 문제를 본 연구에서 제시한 방법에 따라 적용하였다.

ARIMA와 VAR·VEC 모형에 의한 부산항 물동량 예측과 관련성연구 (Study on the Forecasting and Relationship of Busan Cargo by ARIMA and VAR·VEC)

  • 이성윤;안기명
    • 한국항해항만학회지
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    • 제44권1호
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    • pp.44-52
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    • 2020
  • 세계적인 장기경기침체 속에서 보다 정확한 물동량 예측은 항만정책 수행에 중요하다. 따라서, 본 연구에서는 부산항 컨테이너 물동량(수출입화물과 환적화물)을 단변량 모형인 ARIMA 뿐만 아니라 인과관계가 있을 것으로 예상되는 경제규모(한국, 중국, 미국의 국내총생산), 금리수준 그리고 경기변동을 고려한 벡터자기회귀모형과 벡터오차수정모형을 활용하여 추정하고 비교하였다. 측정자료는 2014년 1월부터 2019년 8월까지 월별 부산항 컨테이너 물동량이다. 분석결과에 의하면, 수출입물동량 시계열은 비교적 안정적(stationary)이어서 VAR에 의해 추정하였고 환적화물은 불안정적(non-stationary)하지만, 경제규모, 금리 및 경기변동과 공적분(장기적인 균형관계)를 띠고 있어 VEC모형으로 추정하였다. 추정결과, 안정적인 수출입화물 추정에서는 단변량 모형인 ARIMA가 우수하고 추세가 있는 환적화물은 다변량모형인 VEC모형이 보다 예측력이 우수한 것으로 나타나고 있다. 특히 수출입화물은 우리나라 경제규모와 관련이 있고, 환적화물은 중국과 미국 경제규모와 밀접한 관련이 있다. 또한 중국 경제규모가 미국에 비하여 더 밀접하게 나타나고 있어 환적화물 증대전략에 시사점을 주고 있다.

TLCSM 개선을 위한 IT기술의 적용방안 (A Scheme on applying IT technology for TLCSM improvements)

  • 최명진;권대일;양재경
    • 한국산학기술학회논문지
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    • 제17권12호
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    • pp.26-33
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    • 2016
  • 현대의 무기체계는 새로운 전쟁양상의 변화와 첨단 과학기술의 급격한 발달로 인하여 체계가 복잡 및 다양해지고 있으며, 무기체계의 운영 및 관리를 위한 군수비용의 급격한 증가의 양상을 보이고 있다. 또한 정부의 창조경제 수행방안으로 군의 군수비용을 최소화하기 위한 방안에 대한 적극적인 검토가 요구되고 있다. 이에 본 연구에서는 군수비용 절감을 위하여 첫째, 군수품의 분류기준, 관련 규정 및 제도, 장비정비정보체계에 대해서 분석 등을 통한 군수품 관리의 문제점을 도출하였다. 둘째, 도출한 군수품 관리 문제점에 대한 개선방안으로 실명제 및 책임제 군수관리의 필요성과 운영방안, 정비지시서 상태분류 기준 세분화 적용방안을 제시하였으며, 적용에 따른 기대효과를 분석하였다. 마지막으로 IT기술 중 CBM를 활용한 품목별 제원관리 및 기록체계를 구축 할 수 있도록 총수명주기체계관리(TLCSM)를 현 군에서 운용 중인 장비정비정보체계와의 연동할 수 있는 시스템 구축 방안을 제시하였다. 이와 같이 제시한 방안을 적용하게 된다면 군수행정의 오류방지, 단순화 및 신속화, 군수품 관리에 대한 신뢰성 향상 및 예산절감 등의 효과가 기대된다.