• Proceedings of the Korea Society for Industrial Systems Conference
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• 2002.06a
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• pp.361-366
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• 2002

It has been reported that neural network with cyclic connections generates limit cycles. The dynamics of discrete time network with cyclic connections has been analyzed. But the dynamics of cyclic network in continuous time has not been known well due to its huge calculation complexity. In this paper, we study the dynamics of the continuous time network with cyclic connections and the effect of chaotic signal in the network for transitions between limit cycles.

• Monthly Duck's Village
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• s.68
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• pp.48-56
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• 2009

현대와 같이 산업사회로 발달되기 이전의 자연생태계는 행복하였다. 청정한 태양 빛 아래 맑은 공기, 물, 흙과 나무가 어우러진 자연의 환경에서 엄연한 먹이사슬질서 속에서 살아 왔었는데, 인구증가와 산업사회로 발전하면서 대량수요가 요구되면서 그들은 점차 행복한 삶의 터전이 없어지고, 강제로 억제시킨 극도의 열악한 집단사육환경에 적응하면서 살아갈 수밖에 없게 되면서 먹이사슬에서 부작용과 역기능이 발생되기 시작하였다. 집단사육장환경을 획기적으로 개선해야 된다. 태양빛이 완전 차단되고 밀폐된 공간에서 집단사육시키고 있는 닭, 오리, 돼지가 정상적으로 생장할 수 있도록 적어도 자연환경에 가까운 밝고 청정한 환경으로 개선시켜야 된다. 사육동물들이 정상적으로 생장할 수 있도록 자연환경과 버금가는 생태환경으로 개선시켜 주어야만 오리들이 건강하게 성장하고 면역력이 증강되어 조류인플루엔자와 같이 원인불명의 질병에 감염되지 않을 것이다. 현실적으로 모든 실내 생태계의 성장을 활성화시키면서 면역력을 증강시킬 수 있는 생명에너지 빛(Bioenergetic Rays)을 방사하는 차세대 조명기술로 집단사육장의 실내를 획기적으로 밝게 하고, 실내의 탁한 공기가 신선한 외부공기로 충분히 순환이 될 수 있도록 반 밀폐구조로 개조해야 한다. 그리고 한 마리 당 활동공간을 넓혀 주어야 한다.

• Journal of Korean Institute of Industrial Engineers
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• v.22 no.3
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• pp.413-426
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• 1996

Modern society, as a result of high industrial technology, is characterized by a series of mass production, moss consumption and mass disposal. As the mass disposal is known as the major culprit of destroying ecological system of our environment, human prosperity is in turn threatened by this indiscrete activities. Under current industrial technology which pursuit maximum profit, environmental problems could not be solved. This paper proposes recycle manufacturing systems of assemble products as a measure of current non-recycle manufacturing systems. Products are also composed of a number of ports. All parts are represented by a function of time cost performance variable as reuse level. We develop on information systems which give all the information on reused and recycled parts. We try to implement this result on a real fields. We confide ourselves to the contribution to on effective solution of environmental problems and to give profit to assembly manufacturing and consumers.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.30 no.1
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• pp.48-58
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• 2007

For a sustainable development, the resources circulation system should be established and required alternative logistics area of enterprises. In this paper, we are to suggest a direction through analysis effects, and reduce, recycle, reuse factor of transportation, material handling, packing, information, management in logistics function, and effects of logistics organization on Firm Performance. We found significant correlations between the constructs extracted above, and between the constructs and firm's performance. This study was conducted with the subjects of manufacturing enterprises with concurrent reviews of literature and statistical analysis, and the meaning of this study would be the analysis of the influencers of the resources circulation system.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2003.11a
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• pp.517-524
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• 2003

현재 전 세계 각국은 지식 경쟁력 확보에 혈안이 되어 있으며, 우리나라는 풍부한 인터넷 인프라를 구비하여 지식 강국으로 발돋움하기 위한 충분한 토대를 마련하고 있다. 특히, 인력은 인터넷 시대의 핵심적 지식 자원으로서, 전문가 두뇌 연계 망(네트워크)의 구축과 운영을 통해 해당 분야 전문가간 협력 및 교류가 진행되면, 지식 정보의 동시 생성, 공유, 활용 체제의 확립이 가능하다 전문가 커뮤니티의 구성원은 정보의 공유와 확산에 자발적으로 기여하는 지식의 선 순환 구조를 이루게 될 것이다. 본 논문에서는 국내외 과학기술 전문가로 구성된 한민족과학기술자 네트워크(KOSEN, www.kosen21.org)를 사례로 전문가 네트워크의 역할과 특징을 살펴보고, 지식 기반 사회에서 전문가 네트워크의 발전 방향을 제안하고자 한다. KOSEN은 지식의 생성, 공유, 활용 등의 지식관리 프로세스를 지원하는 과학기술 전문가 커뮤니티이다. 향후 인적 자원 및 정보 자원의 적절한 연계를 통해 지식의 활용 측면을 더욱 확대하여 본격적인 지식 정보 활용의 장으로 거듭나야 한다. 컨텐트 가치증대를 통한 전문가 참여 확대, 전문가들간 상호 연계의 확대를 통한 소 공동체 형성, 전문가들간 상호 학습, 정보 거래 메커니즘 구축 등의 다양한 방안을 통해 보완될 것으로 기대한다.

• Journal of Korean Institute of Industrial Engineers
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• v.24 no.4
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• pp.639-647
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• 1998

We consider a multiclass production system processed by a single machine with cyclic order. Each part belongs to one of several classes and arrives at each queue in a Poisson process. The processing discipline at each queue is either exhaustive or gated. We introduce a new approach to analysis of mean waiting times for each queue. We formulate mean waiting times as cost functions on state of the system. The mean waiting times are obtained by solving a set of O($J^2$) linear equations, where J is the number of queues in the system. We also obtain the mean number of parts of each queue in the system at an arbitrary time. Based on this result, we plot the numerical values of the mean waiting times for several parameter settings.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.405-406
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• 2021

1990년 대 이후 대한민국의 음악 엔터테인먼트 컨텐츠는 동서양을 넘어 각 대륙으로 수출되며 다양한 부가 가치를 창출하고 있다. 이에 따라 엔터테인먼트 산업은 직업과 진로의 선택에 있어 젊은 층의 높은 선호를 받고 있지만 업계의 외형적 성장에 비해 내부의 직업적 환경과 만족도는 열악한 상황으로 90년 대 이전 '도제 방식'이라는 미명 하에 이어져 온 텃세와 관행 등은 업계 종사자와 신규 창업자를 이탈시키고 있다. 산업의 선순환과 지속 가능성 제고를 위하여 다양한 형태의 청년 창업 지원이 이루어지고 있으나 실제 창업현장에서의 효과는 미미한 실정이다. 본 연구는 SWOT 모델을 이용하여 음악 엔터테인먼트 분야 청년 창업의 강점과 약점, 창업 환경에 따른 위기와 기회를 분석한 후 음악 엔터테인먼트 분야 청년 창업의 시사점을 제시하고 성공 전략을 모색하고자 한다.

• Journal of Digital Convergence
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• v.10 no.2
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• pp.47-53
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• 2012

Economic crisis, efforts to overcome the digital content industry development at home and abroad have been racing in the country's future lies in the digital content industry. Therefore, the digital content industry through vision, model identification knowledge-based global digital content market-based deployment is required. For research purposes the digital content industry to derive an alternative to national industrial development that will lay the groundwork. The deployment order for the first digital content industry, SWOT analysis performed to derive the Korean-specific model. As a result, measures based on the advancement of digital content industry as a long-term vision and specific goals are presented as staged. The age of convergence of the u-media content markets in government, corporations, consumers, and these form the structure of a virtuous cycle distribution systems for energy by being active, synergistic effects are obtained. Above all, based on the content industry to secure internal and external growth is key. Vision of the digital content, the growth momentum of the national social development policies to be used as a role model by changing the way a series of courses is required.

• Journal of Korean Society of Forest Science
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• v.68 no.1
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• pp.1-10
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• 1985

This study was carried to analyze the structural change of interrelationships between the forestry including forest product processing and the other industrial sectors. The interindustry tables (19 setors) were drawn with the aid of the interindustry table published in 1970, 1975 and 1980 in connection with the forestry and forest product processing. In addition, the input coefficient and inverse matrix coefficient were calculated in the light of the 19 sector of interindustry tables. Owing to the change of economic structure during the period of 1970-1980, the importance of forest in Gross National Product has been decreasing. But it has shown that forestry is a kind of original industry having a great deal of intermediate demand which is constantly increasing. Therefore, forestry could be regarded as a supply industry to other industries. In addition, the import coefficient of forestry products in larger than that of other industries and it keeps increasing.

• Journal of the Economic Geographical Society of Korea
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• v.16 no.4
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• pp.551-566
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• 2013

This study aims to evaluate the industrial cluster policy implemented in Korea during the last decade or so, examine whether it can still be a valid policy measure in the creative economy regime, and propose policy directions for the future. It is evaluated that the cluster policy has contributed to increasing productivity by improving networks between companies, universities and research centers and thus strengthening innovation infrastructure. The policy, however, by its characteristics of government-domination, failed to develop open-ended and flexible spontaneous clusters. Industrial clusters have the capability to contribute to the virtuous circle of creative economy by enhancing creativity and innovativeness, and subsequently by increasing value-added. In order to maximize these positive effects, a few suggestions are made, including being faithful to the very nature of clusters, e.g. geographical proximity and connectedness, intending clusters with creativity well maintained, orienting toward multi-scalar clusters with a mixture of local and global perspectives, and matching regional and industrial policies with regards to clusters.