• Journal of Sericultural and Entomological Science
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• no.12
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• pp.47-50
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• 1970

There are many factors affecting the development of sericultural industry in Korea. The setting of a rational pricing system for sericultural products is one of important activities of the Korean Government to improve the incentives to producers. The determination o： the prices for many years were based on the production costs including a certain level of profits. Some of cost items are in conflict both in cocoon producers and silk-reeling industries. Government officials have to evaluate these conflicting problems and estimate the consequences of their decisions. In this situation the final decision often became political decisions. This analysis is aimed at providing an alternative method of setting the prices of sericultural products. The criteria of the equilibrium employed in this analysis are based on economic principle which equilibrium condition is determined by the relationships between the marginal productivity of input factors and factor prices. In order to obtain the related information Cobb-Douglas'functions were fitted using KIST computer and data were obtained mostly from the Bank of Korea and the Ministry of Agriculture and Forestru, An important assumption is that "Opportunity Costs" of factors input in both cocoon production and silk-Peeling industries are same, The major finding s obtained are as followings. 1) The sum of coefficient of production elastisity in silk-reeling industries is greater than one. Silk-reeling industries are operating under the situation of increasing return to scale and it is, therefore, expected to develop the industries as the capital-intensive large scale. 2) The cocoon producing farmers are under the situations of the decreasing return to scale and it is expected to continue their cocoon farming as the labor-intensive small scale, assuming the present level of production technology. As the development of commercial farming, the resources input in cocoon production will be shifted to the production for higher profitable crops, 3) The price elastisity of production is higher in cocoon production than in silk-reeling industries. It is expected that the price changing effects on domestic production will be resulted from cocoon producers. 4) Based on analysis results of marginal productivities and the opportunity costs of resources, cocoon price for meeting equilibrium price condition is to be increased by 8-16 percent or standard price level of silk increased by 6-8 percent. There were the possibilities of over evaluation on opportunity cost of resources input in silk-reeling industries, or income transfered from the farmers to the industries. It is recommended that the prices for meeting equilibrium price conditions are to be determined by 72 percent for cocoon and 28 percent for silk-reeling costs, based on standard level of the exporting prices.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.22 no.7
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• pp.41-45
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• 2004

기업의 IT 환경 순환주기를 보면 업태마다 약간의 차이가 있겠으나 평균 2∼3년, 길게는 5년 정도마다 신규 부문에 대한 대단위의 투자가 이루어지고 있으며, 이런 투자 주기는 2000년 밀레니엄 시대를 맞이하여 더욱 활발하게 이루어졌다. 결과적으로 기업의 IT 자산은 그 동안 질적인 부분보다는 양적인 팽창이 기업 경쟁력 강화, 업무 생산성 향상이라는 명분을 충족시키기 위한 수단으로 행해져 왔다.

• the USERS
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• s.45
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• pp.50-53
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• 2005

인성디지탈은 기업 정보시스템의 인프라가 되는 주요 업무용 소프트웨어, 그래픽, 보안, 백업 솔루션 제품군, 그리고 하드웨어 제품군 등 IT 전 부문에 걸쳐 고객이 필요로 하는 토탈 솔루션을 제공하고 있다. 소프트웨어와 네트워크 사업으로 시장 경험을 쌓아왔던 인성디지탈은 하드웨어 사업으로 그 영역을 확장함으로써 더욱 경쟁력있는 e-솔루션 사업 영역을 갖추고 IT 사업을 위한 새로운 도약을 준비하고 있다.

• the USERS
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• s.47
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• pp.32-33
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• 2006

정부는 2006년 1월 정보통신 R&D 사업을 확정하고 IT839 전략의 가속화를 중점 추진하는 내용의 투자계획안을 확정하였다. 이를 위해 기술개발에 7,067억원, 인력양성 부문에 1,145억원, 표준화에 335억원, 연구기반조성에 1,078억원 등 전년대비 10.1% 증가한 통 9,634억원을 투입할 계획이다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.18 no.4
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• pp.336-344
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• 2012

It is very important to salvage the vessel and seafarer rapidly and efficiently when maritime accident occurred, as maritime accident has a bad effect on vessel, seafarer and shipping industry as well as the whole community itself. Especially, marine salvage in relation to the accident involving huge marine pollution and loss of life will be regarded as a more important process because the accident would result more severe damages. However, domestic marine salvage forces are weaker than other country's, and private marine salvage company has poor technical and commercial base even though the Korea Coast Guard and Navy have relatively more modernized equipments and squad. Thus, it is very important to promote marine salvage operation capacity because it is related with the national security as well as the national economy. In this regard, this study examines the promoting method of marine salvage including its public and private section from the perspectives of law and systemic revision.

• Informatization Policy
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• v.21 no.1
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• pp.3-16
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• 2014

The personal information is now considered more valuable and important topic in this highly improved knowledge information society. In this research, 50 research papers and government reports between 2000 and 2013 are analysed to understand a trend of academic research of the personal information. To summarize of the result of the analysis, firstly, there are many discussions and emphases to governmental protections of the personal information, mainly in the qualitative and legal system level. Secondly, there are insufficient researches of the personal information, particularly in the academic field rather than government and national research institutes. Thirdly, there are not sufficient investigations to approach influential reasons and relations of cause and effect, though there are much enough researches on the actual and present conditions of the protection of the personal information. To develop the investigation of the personal information, it needs to be considered to research more about systematic approach to the issue of personal information, expansion of research area considering the changeable IT environment, diverse methodological experiment like a metrical way, reformation of investigation system, and improved information management in the private sector.

• Design & Manufacturing
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• v.15 no.1
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• pp.48-56
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• 2021

The quality of products produced by injection molding process is greatly influenced by the process variables set on the injection molding machine during manufacturing. It is very difficult to predict the quality of injection molded product considering the stochastic nature of manufacturing process, because the process variables complexly affect the quality of the injection molded product. In the present study we predicted the quality of injection molded product using Artificial Neural Network (ANN) method specifically from Multiple Input Single Output (MISO) and Multiple Input Multiple Output (MIMO) perspectives. In order to train the ANN model a systematic plan was prepared based on a combination of orthogonal sampling and random sampling methods to represent various and robust patterns with small number of experiments. According to the plan the injection molding experiments were conducted to generate data that was separated into training, validation and test data groups to optimize the parameters of the ANN model and evaluate predicting performance of 4 structures (MISO1-2, MIMO1-2). Based on the predicting performance test, it was confirmed that as the number of output variables were decreased, the predicting performance was improved. The results indicated that it is effective to use single output model when we need to predict the quality of injection molded product with high accuracy.

• Design & Manufacturing
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• v.16 no.2
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• pp.1-6
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• 2022

As environmental regulations are strengthened, automobile manufacturers continuously research lightweight structures based on carbon fiber reinforced plastic (CFRP). However, it is difficult to see the effect of strength reinforcement when using a single CFRP material. To improve this, a hybrid laminate in which CFRP is mixed with the existing body structural steel was proposed. In this paper, CFRP patch reinforcement is applied to each compression/tensile action surface of a 22MnB5 metal sheet, and it was evaluated through a 3-point bending experiment. Progressive failure was observed in similar deflection on bending deformation to each one-sided reinforced specimen. After progressive failure, the tensile reinforced specimen was confirmed to separate the damaged CFRP patch and 22MnB5 sheet from the center of the flexure. The compression reinforced specimen didn't separate that CFRP patch and 22MnB5, and the strength reinforcement behavior was confirmed. In the compression reinforced specimen, damaged CFRP patches were observed at the center of flexure during bending deformation. As a result of checking the specimen of the compression reinforcement specimen with an optical microscope, It is confirmed that the damaged CFRP patch and the reinforced CFRP patch overlapped, resulting in a concentrated load. Through the experimental results, the 22MnB5 strength reinforcement characteristics according to the reinforcement position of the CFRP patch were confirmed.

• Journal of Energy Engineering
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• v.20 no.1
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• pp.54-62
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• 2011

Since the release of mid-term domestic GHG goals until 2020, in 2009, some various GHG reduction policies have been proposed. In case of the transportation sector for the mid-term domestic GHG goals, it targets to reduce about 30% regarding the doemstic economic growth until 2020. A major reduction method in passenger cars considers an electric car. In this study we analyze some various scenarios to compare between internal combustion engine car and electric car using break-even analysis. Through the analysis we suggest a subsidy policy for electric car.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2000.10a
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• pp.81-86
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• 2000

Exchange-cooperation between south and north Korea using the Information can say that it breaks down a physical barrier and recoverys quickly national homogeneity between them. As a case of a unified Germany, Excange-cooperation in the information and communication field has an important influnence on making a decision over the progress speed and quantity of friendly relations between Seoul and Pyong-yang, which ranges over a wide field like economy and society. This paper examines a unified German's precedent and the present condition of Excange-cooperation between the South and the North of Korea so that Excang-cooperation scheme in the information and communication field presents.