• Title/Summary/Keyword: Expansion Factor

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A Study on the Rebar Corrosion Control in Concrete by Using the Sacrificial Anode Cathodic Protection (희생양극법을 이용한 콘크리트중의 철근부식 억제 효과에 대한 연구)

  • 문한영;김성수;김홍삼;김성섬
    • Proceedings of the Korea Concrete Institute Conference
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    • 1997.10a
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    • pp.299-302
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    • 1997
  • Generally the corrosion expansion of the steel due to outdoor corrosive environmental factor brings about serious problem on the durability of concrete structures. It is the purpose of this study to see whether adapted sacrificial anode method is effective or not. from the experimental results. the potential of steel in concrete in case of adapting the sacrificial anode method satisfies protection standard value (less than -850mV vs CSE).

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Study on the Selection of Voltages for Economic Low Voltage Power Distribution System (경제적인 저압 동력계통 전압방식에 관한 연구)

  • Chang, Choong-Koo;Suh, Sang-Jin;Lee, Min-Young
    • Proceedings of the KIEE Conference
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    • 2001.11b
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    • pp.157-160
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    • 2001
  • The selection of voltage is one of the most significant factors in the design of power system for industrial plant. It is a major factor in determining over-all system cost, flexibility, and ease of future expansion. This paper presents the study results on the selection of economic voltage for low voltage power distribution system.

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Behavior of Pile Foundation of Skewed Plate Girder Bridge with Integral Abutment (일체교대식 판형교의 사각변화에 따른 파일기초 거동분석)

  • 서혜선;이성우
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1998.10a
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    • pp.389-396
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    • 1998
  • One solution to prevent deterioration due to expansion joint and to extend lifetime of short span bridges, is jointless integral abutment bridge. To understand behavior of pile foundation of skewed plate girder bridge with integral abutment, finite element analysis was performed for the model of different skew angle from 90。 to 50。. Comparison of stresses at pile and abutment was made for each case. It is found that effect of temperature change is major factor to influence the behavior of skewed integral abutment bridge.

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A Study about Establishment of Discrimination Model of Impact Factors of Big Traffic Accident -With Laws Violation Type- (대형교통사고 영향요인의 판별모델 구축에 관한 연구 -법규위반 유형을 중심으로-)

  • 오윤표;고상선
    • Journal of Korean Society of Transportation
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    • v.10 no.3
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    • pp.59-74
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    • 1992
  • The change of industrial structure, the expansion of economic scale, the elevation of national life level and rapid motorization bring about social problems that are traffic accident, traffic congestion, etc. Especially, big traffic accidents bring about the great number of dead and wounded person with damage of property. But there are no study results available mainly focused on the big traffic accident analysis. Accordingly, this study is essentially for the factor analysis of big accident types including laws violation and the assaulting driver's death using Quantification ll method.

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A Study for Lifespan Prediction of Expansion by Temperature Status (온도상태에 따른 신축관 이음의 수명예측에 관한 연구)

  • Oh, Jung-Soo;Lee, Bong-Soo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.10
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    • pp.424-429
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    • 2018
  • In this study, an expansion joint that is susceptible to waterhammer was tested for its vibration durability. The operation data for the hydraulic actuator was the expansion length of the expansion joint when the waterhammer occurred. In the case of the vibration durability test, the internal temperature status of the expansion joint was assumed to be a stress factor and a lifespan prediction model was assumed to follow the Arrhenius model. A test was carried out by increasing the internal temperature status at $30^{\circ}C$, $50^{\circ}C$, and $65^{\circ}C$. By a linear transformation of the lifespan data for each temperature, a constant value and activation energy coefficient was induced for the Arrhenius equation and verified by comparing the value of a lifetime prediction model with the experimental value at $85^{\circ}C$. The failure modes of the ongoing or finished test were leakage, bellows separation, and internal deformation. In the future, a composite lifespan prediction model, including two more stress factors, will be developed.

A Study on the Retailer's Global Expansion Strategy and Supply Chain Management : Focus on the Metro Group (소매업체의 글로벌 확장전략과 공급사슬관리에 관한 연구: 메트로 그룹을 중심으로)

  • Kim, Dong-Yun;Moon, Mi-Jin;Lee, Sang-Youn
    • Journal of Distribution Science
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    • v.11 no.12
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    • pp.25-37
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    • 2013
  • Purpose - The structure of retailing has changed as retailers develop markets in response to business environment changes. This study aims to analyze the general situation of retailers in order to predict future global strategy using case studies of overseas expansion strategy and the Metro Group's global strategy. Research design, data, and methodology - The backgrounds to the new retail business model and retailer classification are analyzed as theoretical data. In addition, the key success point of the Metro Group's "cash and carry" strategy is analyzed as is the Metro Group's global CFAR (collaborative planning, forecasting, and replenishment) strategy. Finally, the plan for cooperation and precise forecasting under the Metro Group's supply chain management are analyzed from the promotion environment viewpoint. Related materials analyzed included the 2012 annual report, the Metro Group's web page, and a video interview with the executive in charge of global strategy and the new market development department. Some data were revised to avoid disrupting essential aspects of the case studies. Results - The important finding was that the Metro Group could be a world-class retail company with its successful global expansion strategy. The Metro Group's global strategy's primary goal is to have a leading business position in Eastern and Western Europe. The "cash and carry" strategy is highest priority in its overseas expansion strategy. Moreover, the Metro Group has standardized product planning capacity, which could be applied in various countries with different structural and cultural backgrounds. This is the main reason that the Metro Group could rapidly become successful in the Eastern Europe and Asian markets through its structural overseas expansion strategies. In addition, the Metro Group emphasizes the importance of supply chain management. Conclusions - First, retailers should create additional value through utilizing the domestic market, market power, and economies of scale to launch a global strategy to maximize benefits from diversification. Second, the political, economic, and cultural background of the target country needs to be understood to successfully implement the overseas expansion strategy. Third, the main factor of successful cooperation with a local partner is how quickly the company gains total understanding of the business resources and core competence of its partner. All organizations should focus on the achievement of goals in order to successfully operate the partnership. Fourth, retailers should improve their business, financial and organizational structure. Moreover, the work processes and company culture should also be improved to respond strongly in the competitive global market. Fifth, the essential point of a successful retail business is the control capacity of its branding and format. The retailer could avoid forecasting errors through supply chain management by perfectly distributing the actual amount of its inventory. In addition, the risks along the supply chain are effectively shared between the supply chain partners. Finally, the central tendency of the market is to gain in strength with this taking place across all parts of the business.

An Empirical Study on the Use of Trade Insurance by Korea Agricultural and Marine Products Trading Companies (한국 농수산물 수출업체의 무역보험상품 이용에 관한 실증분석)

  • PAK, Myong-Sop;PAK, Young-Hyun
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.66
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    • pp.285-312
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    • 2015
  • Export and import of food, agriculture, forestry, fishery products are suffering from low growth rate due to the European financial crisis, global recession, and Japan's 2012 export expansion following the aftermath of 2011 earthquake. Upon the signing and enactment of Free Trade Agreement with the U.S. and the EU, agriculture and fishery product have become the center of attention. Agriculture and fishery was reported to be 80million dollars, 1.46% of total national export, in 2012. Starting from2000, South Korea's government began its effort to expand agriculture and fishery export and as a result, export has steadily increased despite decreased consumption led by global recession. K-Sure has started an insurance program with the purpose of promoting SME business's export. It protects SME business against risk arising from credit, emergency, bad debt, and domestic price increase. This study aims to evaluate the service quality of K-Sure's insurance program via surveying SME businesses in the agriculture and fishery industry. Also this study will identify key service factors for SME businesses and explore ways to expand SME exports of agriculture and fishery by analyzing consumer satisfaction index. Results indicated service product quality factor, service communication quality factor, and social quality factor was key to improving consumer satisfaction for SME businesses in agriculture and fishery industry. Service product quality factor had a negative effect on consumer satisfaction in term of variety and results indicated that service communication quality factor's responsiveness element had minimal impact on consumer satisfaction. Conversely, all elements for social quality factor had positive effects on consumer satisfaction. Thus, leading to the conclusion that improvements in service product quality factor and service communication quality factor will indeed increase consumer satisfaction.

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An Analysis on the Constructional Factor of Slacks by Lower-Limb Movement (하지동작(下肢動作)에 따른 Slacks 구성요인(構成要因) 분석(分析))

  • Park, Young Deuk;Suh, Young Sook
    • Journal of the Korean Society of Clothing and Textiles
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    • v.17 no.4
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    • pp.648-662
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    • 1993
  • The summarized findings resulted from experiments and investigation are suggested as follows ; The analysis of measurements on the lower limb movements : For this experimentation, data was collected from three hundred and eighty female, age 19 to 23, who answered five lower limb movements(M1~M5). The statistics show that the order of the expansion ratio is gluteal area-length/knee-girth/back-line/knee-depth/thigh-depth/hip-girth, from the highest to the lowest in all movements. When comparing the correlation coefficient of the measurements, the values of the correlation coefficient of the height and the length items are very low, but those of the girth, the breadth, and the depth items are relatively high and those of the waist and the hip items are highest. For more sophisticated analysis, the factor analysis was conducted on the lower limb movements. Four factors were classified on the factor load by the "varimax rotation" method. Each movement shows the most important factor differently, as follows ; the most important factor in M1 is "the shape factor of lower limb below hip-line", that in M2 is "the cross-sectional shape factor", that in M3 is "the size factor of abdominal and loins region", and those in M4 and M5 accord with the interpretation of M3. When the investigation of the estimated function was conducted, in the selectional case of representative items on the slacks construction, it found that it would be better to add abdomen and thigh items as important considerations to waist girth, hip girth and crotch length.

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A Study on the Influence Factor Relationship of the Railway Tourism Policy for Job Satisfaction (철도관광정책 직무만족도 영향요인 연계성 분석)

  • Kim, Jung-Phyung
    • Journal of the Korean Society for Railway
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    • v.18 no.4
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    • pp.391-400
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    • 2015
  • This research used a survey of 350 staff members working at Korail with the purpose of analyzing influence factors for the railway tourism policy for job satisfaction; results were presented for the proposed factor. First, we selected the influence factor through precedent research related to the railway tourism policy. Second, the selected influence factor and the extent of satisfaction were used to determine whether or not any kind of difference existed according to individual attributes of the railway employees. Finally, we analyzed what the influence factor was between the category factor and the sub-category factor. In conclusion, it was found that government subsidy had a meaningful correlation with infrastructure expansion and the improvement of the railway business as it is connected to tourism efficiency. Human resources have a meaningful correlation with the needs of educational institutions and the retaining of talent. Railway tourism production has a meaningful correlation with railway tour production as it is conducted to satisfy tourists and the consortium. The shift of viewpoint has a meaningful correlation with the escape from the peace-at-any price principle and demand forecasting.

Identifying Supply-demand Relationships on Ecosystem Services Using Socio-ecological Approach in Gyeong-gi Province (사회-생태계 이론을 활용한 경기도 지역 생태계서비스 공급-수요관계 분석)

  • Park, Yoon-Sun;Kim, Choong-Ki;Lee, Jae-Hyuck;Song, Young-Keun;Hong, Hyun-Jeong
    • Journal of Korean Society of Rural Planning
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    • v.27 no.3
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    • pp.35-46
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    • 2021
  • Ecosystem services play a role in promoting sustainable development by contributing to human welfare. For sustainable development, a balance between supply and demand for ecosystem services must be made. In this regard, in this study, factor analysis was performed using the results of measuring ecosystem services for the supply of ecosystem services and national statistical data representing socio-economic factors for demand for ecosystem services The results of analysis for Gyeong-gi Province are as follows. The service supply based on the result of ecosystem services was divided into the mixed service provisioning as factor1, the food provisioning as factor2, and the P retention service provisioning area as factor3. As for the demand for services based on socio-economic factors, factor1 is divided into urbanized areas, factor2 is forest development area, and factor3 is agricultural activity development area. Local governments that maintain balance were evaluated as Pocheon, Yangpyeong, Icheon, Pyeongtaek, Goyang, Suwon, Gwangmyeong, and Osan, and imbalanced local governments appeared in Gimpo, Uiwang, Anseong, and Yeoju. A management plan to maintain the balance between supply and demand of ecosystem services was suggested. The analysis method and results of this study are expected to be applicable to various local governments through regional expansion.