• 한국공작기계학회논문집
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• 제11권1호
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• pp.91-96
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• 2002

Recently industry has moved towards automated operations with the goal of achieving better product quality greater productivity and reliability The pump design in characterized by extensive utilization of the related database which contains performance data. The inputs to the system are through interactive dialogue sessions and the basic input consist of flow rate, head, of fluid efficiency and the customer special requirements. These basic inputs along with the numerous rules in the knowledge bases and the mathematical modeling enable the effective design of the pump industry This paper represents the development of an automatic pump design system that was composed of a main program the data input module the drawing module the drawing edit module and was programed by the AutoLISP language under the Auto CAD program The developed system ultimately generates the design for a pump through the AutoCAD language.

• Membrane and Water Treatment
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• 제9권6호
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• pp.447-454
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• 2018

Although flotation techniques are often used for the removal of algal particles, the practicality of algae-harvesting technologies is limited owing to the complex and expensive facilities and equipment required for chemical coagulation. Here, we examined the feasibility of an approach to separating algal particles from water bodies without the need for chemical coagulants, depending on the condition of the algae, and to determine the optimal conditions. Using Anabaena sp., a cyanobacterium causes algal blooms in lakes, we stimulated auto-flocculation in algal particles without coagulants and conducted solid-liquid separation experiments of algal particles under various conditions. The six cultivation columns included in our analysis comprised four factors: Water temperature, light intensity, nutrients, and carbon source; auto-flocculation was induced under all treatments, with the exception of the treatment involving no limits to all factors, and algal particles were well-settled under all conditions for which auto-flocculation occurred. Meanwhile, flotation removal of auto-flocculated algal particles was attained only when nutrients were blocked after algae were grown in an optimal medium. However, no significant differences were detected between the functional groups of the extracellular polymeric substances (EPSs) of floated and settled algal particles in the FT-IR peak, which can cause attachment by collision with micro-bubbles.

• 펄프종이기술
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• 제47권6호
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• pp.81-88
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• 2015

The molecular weight (MW) and crystallinity of cotton linter need to be controlled to be dissolved well in N-methylmorpholine N-oxide (NMMO) solvent for manufacturing regenerated fibers of clothing fabrics. Electron beam irradiation or sulfuric acid pre-treatment followed by alkaline peroxide bleaching has been used to control MW effectively and to improve brightness of cotton linter. Auto-hydrolysis of cotton linter without electron beam irradiation or chemical pre-treatment was found to be effective as an alternative pre-treatment method. Removal of metal ions, that hampered dissolution of cotton linter by NMMO, was also investigated when the auto-hydrolysis was accompanied with ionic polymers and chelating agent.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1987년도 한국자동제어학술회의논문집; 한국과학기술대학, 충남; 16-17 Oct. 1987
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• pp.335-339
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• 1987

In this report, automatic packing equipment for dairy milk is presented. For food industry, Pneumatic System is widely applied because of it's environments. So, for the actuation, signal processing and sensing of this auto-packer, all pneumatic equipments was applied.

• 기술사
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• 제37권5호
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• pp.42-46
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• 2004

Automobile industry with history of more than 100 years is totally influencing all the economic environments and has very important wellbeing role in the World in every country of the world. Korean Automotive industry in production has only about 40 years but ranked remarkably 6th biggist in the world in the year of 2003. Nowadays The auto, industry has changed into buyer's market in competitively global battle fields and also is changing industry paradigm in product, sales, production, colarboration & emerging, etc. BRICs(Especially China)are rapidly emerging as main producers and customers in new big markets. Korea Auto. Industry faces crictical problems such as higher salary, furious labor union's striking lack of raw material, evasion of 3D works with studying engineering by students which are the key pending agenda that should be overcome for prosperous growth and development of achieving US20,000 GNP.

• 대한안전경영과학회지
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• 제12권2호
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• pp.133-138
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• 2010

The environmental regulation of a product is a global trend. The environmental regulation directives such as RoHS, WEEE, ELV and REACH have impacted Korean export-oriented auto parts manufacturer and affects the export of the product to aboard. In electronics manufacture and auto parts manufacturer, there are different systems for environmental regulation compliance. Nowadays the automotive mechatronics parts in a car are increasing. The HEV and intelligent car will need more mechatronics parts. It is necessary to apply the environmental regulation system of electronics to the automotive parts. In this paper, we proposed the application of PDX standard used in electronic industry to the BOM of the auto parts manufactures and showed an example of generated BOM for selected auto part using PDX. The PDX-based BOM can be used for the recording of environmental substances of the automotive mechatronics part and help the collaboration across auto parts manufactures in accordance with environmental regulation.

• 디지털융복합연구
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• 제12권2호
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• pp.211-221
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• 2014

이 연구는 중국 보험소비자의 보험업에 대한 신뢰 결정요인을 구조방정식 모형을 통해 살펴보고, 생명보험과 자동차보험 간 보험소비자 신뢰 결정요인에 차이가 있는지를 잠재평균과 다집단분석을 통해 검증하였다. 분석결과, 중국 보험소비자의 보험업 신뢰 결정요인으로 가장 큰 영향을 미치는 것은 보험회사의 정직성이었고, 정직성 요인 다음으로는 보험회사가 장래 보험금 지급을 제대로 할 수 있는지를 포괄하는 공신력이 신뢰 결정요인으로 작용하고 있는 것으로 나타났다. 반면, 배려는 신뢰 결정요인으로서는 통계적으로 유의미하지 않았다. 한편, 보험소비자의 신뢰는 중국 보험시장에서도 추후 재가입이나 주변 사람 추천 등 관계몰입으로 강하게 연결됨을 보였다. 이러한 결과는 앞으로 보험업이 더욱 견고하게 지속 성장하기 위해서는 무엇보다 보험소비자의 신뢰 구축이 긴요하다는 것을 시사해 준다.

• 노동경제논집
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• 제29권2호
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• pp.117-143
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• 2006

본 논문은 1963년부터 2003년까지의 40년간의 국내의 금속, 화학, 금융, 자동차 운수부문(sector)의 조합원 수가 시기별로 어떤 증가나 감소 패턴을 보이는가를 규명한다. 또한 이 4개 부문에 속한 산업(industry)인 금속부문의 자동차 조립, 자동차 부품, 조선산업, 화학부문의 시멘트, 석유정제, 제약산업, 금융부문의 민간은행업, 그리고 자동차 운수부문의 시내버스업에서 노조 조직률을 추정하여 산업별로 상대적 노조규모의 차이를 보여준다. 이러한 노조규모의 절대적인 혹은 상대적인 규모의 시기별 변화나 산업별 차이가 각 부문이나 산업이 처한 경제적 환경(성장 단계나 경로)과 제도적 환경(정부개입의 유형이나 정도) 및 사회적 환경(근로자들의 학력, 성별, 연령 혹은 회사의 규모 등의 산업구조)에 영향을 받는 사용자들이나 노조의 태도나 선택에 의해 설명된다. 부문이나 산업수준의 다양성을 고려한 본 논문의 미시적인 사회 경제적 이론들은 선진국의 국제비교 노사관계의 최근 연구들에서 나타나는 미시적인 연구의 필요성의 증가와 맥을 같이한다.

• 통상정보연구
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• 제8권3호
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• pp.299-321
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• 2006

The purpose of this study was to analyze export competitiveness of Korean auto parts and Chinese auto parts in U.S. market by using Index of Export Bias and Market Comparative Advantage Index. For attaining the purpose of study, we classified the auto parts which exported to U.S. market and the imported products by using the six units classification of the Harmonized System(HS). Analyzing period was 1998-2005. The analysis of Korean results of MCA indicated that the Korean auto parts which gained export competitiveness in the U.S. market were HS Code No. 8708.94, 8708.99, 8708.92. The products which will have export competitiveness in the U.S. market would be HS Code No. 8708.93, 8708.39, 8708.60 respectively. On the other hand, the results indicated that the Chinese auto parts which gained export competitiveness in the U.S. market were HS Code No. 8708.70, 8708.31, 8708.91, 8708.60, 8708.39. From this study, we find the following strategies for successful advancing into the U.S. and world market. i) Linking strategy through working cooperation with local auto firms, government and academic world. ii) Advance strategy of auto firm accompany by module working and system auto parts firm. iii) Retention strategy of large technical institution established by auto parts firms and taking cooperation of auto firms iv) Settlement strategy for having weaken competitive article and production field. v) Cost-cutting strategy through strengthening logistics cooperation system between auto parts firms and auto firms. vi) Active invitation strategy of foreign investment under quickly cooperating of government.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2001년도 추계학술대회 논문집
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• pp.174-177
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• 2001

The automated computer-aided drafting technique is attempted for drawing process pictures of axisymmetric solid forgings which are mainly used in automobile industry. For this study basic concepts to draw the shape of an element are described and applied to the 2-dimensional and 3-dimensional modeling of forged parts. 2-dimensional display of process pictures is developed by using AutoLISP language in AutoCAD software of a drafting technique and 3-dimensional view of process pictures is based on the UG/open API and UG/open GRIP languages of Unigraphics software. Testing the developed program to forging of bolts and ballstuds, it was shown to give good results to be applicable in forging industry.