• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.3
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• pp.802-807
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• 2010

The high efficient and cooling system is very important to the control panels of electrical distributors, and Industrial automated system including computer. Also, it can be used widely in various industrial systems such as industrial robots, numerically controlled machining center, and so on. The cooling method which flowing gasses were forced to circulate by compulsion was adapted in this study. then development of counter flow type of cooling system for effective panel cooling. In the present study, fin assembly was developed for this cooling system. As results, the developed system has the improvements of cooling performances and radiant heat ratio. Its increasing of airflow mass is about 20%, and radiation rate of heating is twice or more as high as the conventional system.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2001.11a
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• pp.19-35
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• 2001

우리나라에서 수행된 국책연구개발기술과 관련된 기존 연구는 주로 기술개발에 초점이 맞추어진 관계로, 개발기술의 상용화는 연구개발 결과평가요인의 하나로서 다루어졌을 뿐, 그 자체를 효율화하기 위한 체계적인 연구는 없었다고 해도 과언이 아니다. 이러한 결과로 실제 국책연구개발의 기술적인 이전이 부족하고, 여러 분야에로의 2차 확산을 통한 상용화에 대한 성공률이 상대적으로 낮은 수준에 머무르고 있다. 또한 국내에서 출원된 특허를 포함한 산업재산권의 휴면 율이 55%-65% 수준에 이르고 있다. 이와 같이 연구개발기술의 산업계로의 확산이 부족한 관계로 국제적인 기술경쟁력의 제고가 어려우며, 기술발전과 산업발전이 상호 작용하는 선 순환적 구조를 이루지 못하고 있다. 따라서 본고에서는 기술집약형 중소기업 또는 기술벤처기업을 통한 정보통신산업분야의 정부지원 연구개발 기술의 상업화를 촉진하기 위한 효율적 방안의 도출을 위하여, 일차적으로 연구개발 기술의 상용화프로세스 모형을 도출하고, 다음으로 도출된 모형의 단계별 특성에 대한 기술개발자, 기술사용기업, 지원기관간의 중요도 차이를 분석하고자 한다. 이를 위하여 기존의 기술상용화 관련문헌 분석과, 우리나라의 정보통신 분야의 상용화 특성분석을 통하여, 우리나라 기술개발특성에 맞는 6 단계의 상용화프로세스 모형, 즉 1) 연구개발 계획 및 제안서 작성, 2)연구개발의 수행, 3)개발기술의 인큐베이팅과 시작품제작, 4)테스팅, 엔지니어링 및 시험생산, 5) 공장입지 결정 및 대량생산, 6) 시장판매, 마케팅 및 확산 등을 도출하였다. 아울러 동 모형의 단계별 특성을 설문지로 작성하여, 기술사용기업(벤처기업 및 기술집약형 중소기업), 기술개발자(국책연구소, 대학, 및 일반기업), 관련기관(정부, TBI운영기관, 정책 및 지원기관)을 대상으로 설문조사를 하였다. 회수 및 사용된 142개 설문지 분석을 통하여, 일차적으로 정보통신 국책개발기술의 상용화에 관한 변수들의 중요도 순위로 본 중요도 실태를 분석하였으며, 나아가 이들 변수에 대하여 앞에서 제시한 기술사용기업-기술개발자-관련기관 즉 세 집단 간의 차이분석 즉 ANOVA 분석을 하였다. 이러한 분석을 통하여 우리나라 정보통신 국책연구개발기술의 상용화와 관련된 특성을 도출하는 동시에, 이를 촉진하기 위한 인프라조성과 관련한 중요한 특성 및 지원정책 대안을 도출하였다.

• Journal of the Korean Geographical Society
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• v.45 no.2
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• pp.256-274
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• 2010

The aim of this study is to examine agglomeration patterns of advertising industries and spatial networks of advertisement production in Korea. The focus of analysis is the agglomeration pattern of advertising industries within Seoul because these are agglomerated in Seoul like other business services. Analysis methods are local Moran's I index and location quotient with the regional percentages of each sector's number of employees. Clusters in Gangnam Area are related to start-up advertising firms and global agencies entering domestic advertising markets. Network analysis is used to investigate the spatial networks of TV advertisement production between advertising agencies(AA) and film productions(FP). After transformation of AA-FP network matrix to regional matrix centrality index and brokerage scores are calculated. This analysis shows individual region's different role and position in the AA-FP network. Many agencies in or out of Gangnam Area outsource most advertisement makings to film productions in Gangnam Area. Advertising industry dusters in Gangnam Area is important as of the destination of advertisement production networks and the circulation of those networks.

• Journal of Korea Society of Industrial Information Systems
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• v.19 no.2
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• pp.93-103
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• 2014

This paper establishes the empirical model based on Hall's(1990) and Basu' s(1996) models, estimates the five types of productivity in the medical service industry over the period 1975:1-2010:4, and analyzes the cyclicality of measured productivities and their correlations with the industrial real wage. The empirical results are summarized as the followings. First, there proved to be substantial market power in pricing and returns to scale in production for the medical service industry. Second, the three types of productivity among 5 types showed to be procyclical. Third, the average labor productivity, the original Solow residual, and the cost-based Solow residual are expected to provide reasonable indexes in analyzing the relationship between productivity and real wage.

• Journal of the Korea Concrete Institute
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• v.27 no.3
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• pp.245-252
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• 2015

As people have more interest in environment-friendly structures recently, many researchers are actively researching non-sintered cement in Korea and other countries. Non-sintered cement shows various characteristics of its reaction products and hardeners, depending on the kind of alkali activators. Thus, this study manufactures ground granulated blast furnace slag based non-sintered cement binder by using circulating fluidized bed combustion ash, which is a kind of industrial byproduct, as a stimulant, and investigated its hardening characteristics and hydration, depending on the rate of circulating fluidized bed combustion ash. Besides, this study investigated its insulation property according to the weight lightening of non-sintered cement. As a result, ettringite and C-S-H were mainly formed in the hydration, and it was possible to manufacture a non-sintered cement hardener over 50 MPa. Lastly, it was possible to manufacture a non-sintered cement hardener in a thermal conductivity level of $0.127W/m{\cdot}K$ when the compressive strength was 10 MPa for weight lightening.

• KDI Journal of Economic Policy
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• v.18 no.2
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• pp.185-209
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• 1996

북한(北韓)의 경제개발전략(經濟開發戰略)의 제특징(諸特徵)은 저렴한 농산물가격(農産物價格)에 의한 농업부분(農業部分)에서의 잉여(剩餘), 저임금(低賃金)에 의한 도시노동자(都市勞動者)들로부터의 잉여(剩餘)를 가지고 경제발전(經濟發展)을 이룩하는 것이라 요약할 수 있다. 농민(農民), 도시노동자(都市勞動者) 양측(兩測)을 희생시키면서 유지되어 온 이러한 성장구조(成長構造)는 원래 같으면 저농산물가격(低農産物價格)${\rightarrow}$저임금(低賃金)${\rightarrow}$축적자금확대(蓄積資金擴大)${\rightarrow}$재투자(再投資)${\rightarrow}$생산량증가(生産量增加)${\rightarrow}$소비수준 (消費水準) 증가(增加)로 점진적으로 발전해야만 하는 것이다. 하지만 이러한 성장전략(成長戰略)은 처음부터 철저히 부정되어 왔다. 먼저 농촌부분(農村部分)부터 보면 농촌협동조합(農村協同組合)에서의 소유제도(所有制度), 분배제도(分配制度)의 문제(問題)로 인해 농민(農民)의 근로의욕(勤勞意欲)이 크게 상실되었고 그 결과(結果) 농업생산(農業生産)은 저하되었다. 한편 도시부분(都市部分)에서는 인민(人民)들의 저소비(低消費)의 결과(結果)로 축적된 자금(資金)이 군사부분(軍事部分)에 집중적으로 투자됨으로 인해 그 투자효과(投資效果)가 제 구실을 못하게 되었다. 뿐만 아니라 자급자족지향형(自給自足指向型)의 중공업화(重工業化)는 중공업(重工業)과 관련산업(關聯産業) 상호간(相互間)의 수요(需要)만을 충족시켜 왔다. 그 외에 기업(企業)이 국가(國家)의 지령(指令)에 의해서만 움직이는 국영기업관리체제(國營企業管理體制)의 비효율성(非效率性)도 지금의 북한경제(北韓經濟)를 침체(沈滯)의 늪에서 헤어나지 못하게 하는 주요(主要)한 요인(要因)으로 작용했다. 농업생산(農業生産)의 정체(停滯), 중공업(重工業)을 위한 중공업정책(重工業政策)이라고 하는 왜곡된 투자구조(投資構造), 기업관리체제(企業管理體制)의 비효율성(非效率性)은 북한(北韓)의 계획경제순환구조(計劃經濟循環構造)를 기본(基本)부터 뒤흔들기 시작하면서, 급기야 1980년대 후반부터는 순환구조(循環構造) 그 자체(自體)를 마비시키는 사태(事態)로까지 발전했다. 순환구조(循環構造)의 마비(痲痺)라고 하는 심각한 경제난(經濟難)을 타개하기 위해 북한(北韓)은 나진(羅津) 선봉(先鋒) 자유경제무역지대(自由經濟貿易地帶)를 설치(設置)하고 새로운 자금축적원(資金蓄積源)으로서 외국인직접투자(外國人直接投資)를 유치하는 개방정책(開放政策)을 추진하여 왔다. 하지만 북한(北韓)의 경제(經濟) 순환구조(循環構造)의 마비(痲痺)를 풀 수 있는 근본적(根本的)인 해법(解法)은 어디까지나 그 발단(發端)인 농촌(農村)의 경제체제개혁(經濟體制改革), 농(農) 경공업(輕工業)을 위한 중공업(重工業), 국영기업(國營企業)의 개혁(改革) 등을 과감히 실시하는 것이다. 왜냐하면 해외직접투자(海外直接投資)라는 새로운 자금축적원(資金蓄積源)은 어디까지나 지금의 악순환구조(惡循環構造)를 임시적(臨時的)으로 정지시켜 주는 보완적(補完的)인 조치(措置)에 불과하기 때문이다.

• Journal of the Korean Recycled Construction Resources Institute
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• v.4 no.1
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• pp.101-109
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• 2009

This CW(Construction wastes) are increasing as construction industry is growing, so many countries make efforts to recycle CW. Korea also made a stipulation for recycling CW. But the main content of this stipulation is for using recycled aggregates. Advanced countries try to increase reuse rate of not only recycled aggregate but also other kinds of wastes. So they are adopting SDM(separating dismantlement) method and we are also planning to make the system for SDM. This study is about SDM analysis through construction field investigation and difference analysis between SDM and UDM comparing predictive amount by UDM with real generated amount by SDM. First, the generated amount of construction wastes by SDM is more than estimated amount by UDM, and mixed waste was specially reduced more than UDM. The warehouse is easier than the office building to applicate SDM. But still there is no manual for SDM in the site, so establishment of SDM is demanded.

• Information Systems Review
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• v.18 no.2
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• pp.173-198
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• 2016

Financial distress can damage stakeholders and even lead to significant social costs. Thus, financial distress prediction is an important issue in macroeconomics. However, most existing studies on building a financial distress prediction model have only considered idiosyncratic risk factors without considering systematic risk factors. In this study, we propose a prediction model that considers both the idiosyncratic risk based on a financial ratio and the systematic risk based on a business cycle. Ultimately, we build several IT artifacts associated with financial ratio and add them to the idiosyncratic risk factors as well as address the imbalanced data problem by using an oversampling technique and synthetic minority oversampling technique (SMOTE) to ensure good performance. When considering systematic risk, our study ensures that each data set consists of both financially distressed companies and financially sound companies in each business cycle phase. We conducted several experiments that change the initial imbalanced sample ratio between the two company groups into a 1:1 sample ratio using SMOTE and compared the prediction results from the individual data set. We also predicted data sets from the subsequent business cycle phase as a test set through a built prediction model that used business contraction phase data sets, and then we compared previous prediction performance and subsequent prediction performance. Thus, our findings can provide insights into making rational decisions for stakeholders that are experiencing an economic crisis.

• Clean Technology
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• v.18 no.1
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• pp.111-119
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• 2012

These days many companies are trying to reduce, recycle and reuse their wastes. Even though many wastes can be recycled, those are incinerated or landfilled. To solve these problems, there are many projects to make efforts to recycle wastes in especially the industrial complexes. But, due to the absence of information about waste recycling, recyclable wastes are still incinerated or landfilled. Based on these research background, this study aims to suggest the evaluation methodology of the $CO_2$ emissions and cost reduced by circulating the industrial waste to resource. We evaluated the environmental and economic effect between companies which emit the plastic waste and organic solvent waste and use them as raw-materials in the off-line recycling information exchange network. The environmental and economic aspects were analyzed comparing waste recycling with waste incineration. By recycling the plastic waste as raw-materials, $CO_2$ emission were reduced 1,070 ton in 2009 and 1,234 ton in 2010 and 657.4 million won in 2009 and 755.0 million won in 2010 were reduced. In recycling the organic solvent waste, 7.3 ton-$CO_2$ in 2010 and 5.6 ton-$CO_2$ in 2011 were reduced and 15.9 million won in 2010 and 12.2 million won in 2011 were reduced.

• Journal of the Korean Regional Science Association
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• v.40 no.3
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• pp.109-126
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• 2024

The central government has been promoting innovation cities since the early 2000s for the balanced development of the country in order to solve the problems of overcrowding in the metropolitan area and underdevelopment of the country due to rapid urbanization since the 1980s. The 10 innovation cities built through the regional relocation of public institutions were expected to have positive effects such as economic revitalization and population influx, but uncertainties and various externalities still exist. Therefore, this study aims to analyze innovation cities from the perspective of urban resilience to create sustainable cities. To this end, the research analyzed urban factors in the physical, natural, social, economic, and institutional dimensions of Ulsan Ujeong Innovation City, and applied the Adaptive Cycle and Panarchy to comprehensively analyze them. As a result of the analysis, it was found that the built, socio-economic, and natural environments are currently undergoing the adaptive cycle stages of preservation, reorganization, and growth, respectively, and the interaction and structural causal relationships between Korea, Ulsan Metropolitan City, and Ulsan Ujeong Innovation City were identified. The study concluded that Ulsan Ujeong Innovation City can be sustainable by utilizing opportunities such as the central government's Innovation City Season 2 and financial support, construction of Janghyeon Advanced Industrial Complex, and fostering local innovation clusters according to local conditions.