• 제목/요약/키워드: Dortmund

검색결과 22건 처리시간 0.037초

Benzene+aniline, benzene+nitrobenzene, p-xylene+cyclohexane계의 고액평형에 관한 연구 (A Study on the Solid-liquid Equilibria for Benzene+aniline, Benzene+nitrobenzene, p-xylene+cyclohexane)

  • 박소진;백승관
    • 공업화학
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    • 제9권6호
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    • pp.864-869
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    • 1998
  • 본 실험에서는 대표적인 방향족 화합물이며 유기용매로 널리 이용됨에 따라 환경문제를 유발하는 벤젠을 포함한 방향족 유기혼합물에 대한 고액평형을 자체 제작한 장치로 정적방법에 의해 측정하였다. Benzene+p-xylene계화 1-dodecanol+cyclohexane계로서 실험방법의 정확성과 재현성을 확인하였으며, benzene+aniline, benzene+nitrobenzene, p-xylene+cyclohexane계의 새로운 고액평형데이터를 측정하고 수정된 UNIFAC(Dortmund)식에 의한 계산값과도 비교하였다.

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SIMULATION OF RETURNABLE TRANSPORT ITEM SYSTEMS

  • Krabs, Andreas;Reinholz, Andreas
    • 한국시뮬레이션학회:학술대회논문집
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    • 한국시뮬레이션학회 2001년도 The Seoul International Simulation Conference
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    • pp.83-89
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    • 2001
  • This paper provides a short description of the COMPASS-model which is a concept for the simulation of multiway systems. The focus of the COMPASS-model is to offer an opportunity to investigate the effects of redistribution strategies on logistic and monetary values in a system of returnable transport items (RTI). The modeling concept consists of five modules: topology, system load, distribution, redistribution, cost. It includes the integration of highly sophisticated evolutionary algorithms for the optimal solving of complex capacitated vehicle routing problems (CVRP) which are typical for RTI-systems. The results of first experiments with a COMPASS-based prototype are repeated. They reveal some basic regularities in RTI-systems.

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Natural Ventilation in High-Rise Building with Double Facades, saving or waste of Energy

  • Lee, Eung-Jik;Pasquay, Till
    • KIEAE Journal
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    • 제2권3호
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    • pp.39-45
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    • 2002
  • Double facades are built to allow natural ventilation in high rise buildings and buildings with high outside noise level. In high rise Buildings the gains in summer can be reduced by sufficient sun protection devices placed outside the rooms in the ventilated space between the inner and outer facade. To evaluate the energetic performance, three buildings with double facade were monitored for at least one year (Siemens Building in Dortmund/Germany, Victoria Insurance Company in Duesseldorf/Germany and RWE Tower in Essen/Germany). The results document the indoor climate, the boundary conditions for further planning and the possibilities for high rise buildings without or with little cooling facilities.

지역혁신 지원기관의 역할과 성과: 독일 도르트문트시를 사례로 (Roles of Regional Innovation Agencies and their Performance in Dortmund, Germany)

  • 신동호
    • 한국경제지리학회지
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    • 제21권4호
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    • pp.409-424
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    • 2018
  • 독일 도르트문트시는 전통적 공업도시로 한때 유럽 최대의 공업지역인 루르의 중심도시였다. 그러나 1950년대 이후 탈산업화로 인해 심각한 피해가 있었다. 그 후 도르트문트는 공격적이고 지속적인 지역재생정책과 사업으로 도시의 면모를 바꾸어 나아가고 있다. 1990년대에는 루르지역 전체를 대상으로 한 국제건축공모전으로, 2000년대에는 자체적인 도르트문트 프로젝트로, 그리고 2010년대에는 스마트 시티 전략으로 지역을 혁신하는 가운데 도시의 성장경로를 바꾸어 나아가고 있다. 본 연구는 도르트문트의 이러한 지역재생정책의 성과를 분석하고, 그러한 성과가 나타나게 하는 행위주체의 역할과 그들간의 관계를 규명하고자 한다. 본 연구는 지역혁신체제론과 경로이론에 입각하여 필자가 수집한 다양한 자료를 분석하고, 정책적, 이론적 시사점을 도출하였다.

수지진동에서의 진동강도, 손잡이온도, 소음 및 미는 힘의 복합효과에 따른 악력 및 지단피부온의 변화 (Combined Effect of Vibration Intensity, Grip Temperature, Noise and Pushing Power on Grip Forces and Skin Temperatures of Fingers)

  • 고경심
    • Journal of Preventive Medicine and Public Health
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    • 제27권4호
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    • pp.763-776
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    • 1994
  • Recent studies reveal that grip forces during the hand-arm vibration are most significant for the genesis of vibration-induced white linger syndrome. Therefore, exerted grip forces and skin temperatures of fingers were regarded as dependent variables in experiments and the effects of grip temperature, noise, pushing force, vibration and the combined effect of vibration and pushing force were studied. The objectives of the present study were, first, to varify and compare the changes of grip force affected by grip temperature, noise, pushing force, vibration and the combined effect of vibration and pushing force and, second, to observe the reaction of finger skin temperature affected by above factors. Forty-six healthy male students ($25.07{\pm}2.85$) participated in five systematically permuted trials, which endured 4 minutes each other. Experiments were executed in a special chamber with an air temperature of 21C. In each experiments, the subjects were exposed to five experiment types: (1) grip force of 25N only, (2) pushing force of 50N, (3) acceleration of vibration $7.1m/sec^2(z-direction)$, (4) pink noise of 95 dB (A) and (5) combination of pushing force 50N and acceleration of vibration $7.1m/sec^2$. A repeated-measures analysis of variance (ANOVA) was performed on the grip force to test whether it was affected by noise, pushing force, vibration and pushing force. The present results show that vibration was significantly related to the increase of grip force, but the other factors, such as pushing force, noise and grip temperature had no signigicant influence on the increase of grip force, and that the reaction of finger skin temperature were significantly affected by the skin temperature at start of experiment and grip temperature, not grip force and other experimental conditions. Therefore, we suggest that the management for decreasing the grip force is meaningful to prevent the occurrence of Hand-arm vibration syndrome (HAVS).

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Steady State Design for the Separation of Acetone-Chloroform Maximum Boiling Azeotrope Using Three Different Solvents

  • Pokhrel, Manish;Owusu, Asante Daniel;Cho, Jungho
    • Korean Chemical Engineering Research
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    • 제55권4호
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    • pp.490-496
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    • 2017
  • We have designed an extractive distillation for separating maximum boiling azeotrope of acetone-chloroform system. PRO/II 9.4 was used to simulate the overall process. The VLE data adopted from Dortmund data bank was regressed to obtain a new set of binary interaction parameters. Three different entrainers were used for the separation process--dimethyl sulfoxide (DMSO), ethylene glycol (EG) and benzene--to test their viability for the acetone-chloroform system. Thermodynamic feasibility analysis was done through ternary map diagrams. Two different thermodynamic models, NRTL and UNIQUAC, were explored for the study of overall process.

Creative Industries in Germany - Recent Development and the Role of Science and Technology Parks

  • Gruehn, Dietwald
    • World Technopolis Review
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    • 제3권1호
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    • pp.30-38
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    • 2014
  • The paper deals with the emergence of creative industries in Germany in the last decade and points out the recent development of creative industries at examples from different sub-segments. Recent national and regional policies are reflected and the importance of creative industries in relation to other economic branches will be discussed. Key factors for the development of creative industries are highlighted based on a literature review and a compilation of several empirical research studies. The paper points out the role of Science & Technology Parks for the development and further development of creative industries, based on German experiences. Finally, the conclusion deals with some ideas to facilitate the impact of Science and Technology Parks on creative industries in Germany.

Germany Goes Green - Innovations towards a Sustainable Regional Development

  • Gruehn, Dietwald
    • World Technopolis Review
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    • 제1권4호
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    • pp.230-239
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    • 2013
  • The paper deals with recent paradigm shift in German environmental policy, fundamentally modifying the German society towards a sustainable future development. Key elements of this development are forceful climate protection measures to contribute to global climate protection strategy and to fulfil international conventions, supplemented by a comprehensive strategy to promote the adaptation to climate change, the nuclear power phase out in the medium term, and innovative landscape and regional planning projects to strengthen regional identity and economic power. All this components are,complemented by a financial support program including incentives, tax reductions, and research funding.

대학주도형 기술창업보육센터의 발전방향 - 해외사례연구를 중심으로 - (Development Strateges for University Initiated Technology Business Ineubator)

  • 강병수;오덕성
    • 지역연구
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    • 제11권2호
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    • pp.63-86
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    • 1995
  • One of the innovative and most promising approaches to new high-tech business formation from university is technology business incubators, which attempts to enhance small high-tech start-up firms' chances of survival. To date, there is few comprehensive effort to do a comparative study of technology business incubatiors between European Countries and U.S. to evaluate the impacts of them on regional development. With these consideration in mind this research anlayzed key findings of 6 case studies of university related Technology Business Incubators in the U.K., Germany, and U.S. to explore relationship of university to regional development. These included Cambridge Science Park(CSP) '||'&'||' West of Scotland Science Park in the U.K., Dortmund Technologiezentrum '||'&'||' Berlin Technologiezentrum, and Rensselaer Technology Development Center of the Georgia Institute of Technology in the U.S. The primary objective of this study was to advance our understanding of the impact and utility of technology business incubators and to get some policy implications for the future development in this area in Korea. Among the major question examined hear was "how do they contribute the overall economy of the communities in which they are located\ulcorner". The results of the case study about this question were very positive. The technology business incubators contributed to foster new high-tech small business formation from university, to facilitate the cooperation between university and industry and Incubator tenants created jobs and income, pay taxes, and in doing so, had a multiplier effects on the local economy. The same was true of incubator graduates. With this consideration in mind the university related business regioned development policy in korean local communities.

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