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      • KCI등재후보

        도시형 마을기업의 성장요인과 사례연구

        윤성준 ( Youn¸ Sung-jun ),장석인 ( Chang¸ Sug-in ),진재근 ( Jin¸ Jae-keun) ) 사회혁신기업연구원 2020 혁신기업연구 Vol.5 No.2

        한국은 지난 20년 동안 지방 자치제를 도입했지만, 대도시권 이외 지방자치단체들은 발전 속도 저하와 인구유출 등의 문제에 여전히 시달리고 있으며, 지역사회의 해체가 더욱 가시화되고 있다. 이에 지방자치단체 주민들이 지역 문제를 스스로 해결하게끔 지원하고, 해결 과정에서 지방자치단체라는 공동체의 응집력을 강화하며, 사회를 활성화하기 위한 시급하고 효과적인 정책이 필요하다. 이런 배경에서 마을기업의 개념이 갈수록 중시되고 있고, 지방단체의 해체 현상, 지역 경기의 쇠퇴 등의 문제 해결방안으로 사회적 경제에 대한 연구를 바탕으로 하는 사회기업, 협동조합, 마을기업 등의 개념이 떠오르고 있다. 따라서 본 연구는 지역 활성화를 위한 지역 마을기업 육성정책을 수립하는 데 목적이 있으며, 구체적으로는 다음과 같다. 첫째, 영국과 일본, 그리고 한국의 커뮤니티 비즈니스의 현황, 발전과정을 검토하고 각 발전에서 가지고 있는 문제점을 파악하고자 한다. 둘째, 선행연구를 통해 마을기업이 지역 활성화에 가지고 있는 역할을 살펴보고자 한다. 셋째, 서울시와 고양시에 있는 모범이 되는 마을기업을 사례 분석하고, 이를 토대로 마을기업의 성공 요인 요소를 살펴보고자 한다. 넷째, 연구 결과에 따라 시사점을 제시한다. 그리고 연구 결과에 따른 마을기업의 성공 요인은 다음과 같다. 첫째, 마을기업의 핵심요소는 지역 주민 중심으로 사업 주체를 발전시킬 수 있다. 둘째, 지역 문제와 주민들이 관심이 있는 문제를 해결하기 위한 기업 경영 형태로 적정 이윤의 비영리 형태와 이익의 사회 환원 방식으로 구성되어야 한다. 셋째, 마을 기업은 지역 주민들이 참여해서 자체적으로 제도나 조례의 형태로 규정을 수립하고 자율적으로 이사진을 조직하여 운영할 필요가 있다. 넷째, 주민 조직의 역할과 지도자를 양성하고 중앙정부/자치 단체의 재정 지원과 법률 제도 및 조례의 제정, 마을 운영의 전문 부서 또는 운영 시스템을 수립해야 한다. 다섯째, 마을기업의 성공 요인으로서 마을기업 네트워크 간 순환 지원 구조의 형성이나 지역 내 수익 등에 의한 이미지 제고 및 기업 간 협의회 구성을 강화해야 한다. Korea has introduced a local autonomy system for 20 years, but local governments other than metropolitan areas are suffering from problems such as slow development and population outflow, and the dissolution of local communities is becoming visible. That is why local residents need urgent and effective policies to solve local problems on their own, strengthen the cohesion of local government communities and revitalize society in the process of solving them. Against this backdrop, the concept of village enterprise is becoming increasingly important. More and more studies on the social economy have occurred in the concept of social enterprises, co-operatives and village enterprises, so new measures for problems such as the dissolution of local organizations and the decline of the local economy are being put forward Therefore, this research is an important basis for the establishment of the village enterprise development policy for the revitalization of the region, and the purpose of this study is to establish the local village enterprise development policy for the revitalization of the region because of its high value. Specifically: First, we would like to review the current status and development process of community business in both countries, Japan, and Korea and identify the problems we have in each development Second, we would like to examine the role that village enterprises have in revitalizing the region through prior research. Third, we would like to analyze examples of exemplary village enterprises in Seoul and Goyang, and examine the factors that contribute to the success of village enterprises based on the analysis. Fourth, suggest implications according to the results of the study. The success factors of the village enterprise according to the results of the study are as follows. First, the core element of the village enterprise can develop the business entity around the local residents. Second, it should consist of a non-profit form of appropriate profits and a social return method of profits in the form of corporate management to solve regional problems and problems of residents' interest Third, the village enterprise needs to be operated autonomously by local residents to establish their own regulations in the form of the system or ordinance and to organize and operate the board of directors. Fourth, the roles and leaders of the residents' organizations shall be nurtured and the financial support of the central government/autonomous organizations and the finance of legal systems and ordinances, the specialized departments or operating systems of village operations shall be established. Fifth, as a success factor in village family business, the formation of circular support structure between village enterprise networks or the enhancement of image by profit in the region, and the formation of inter-business council should be strengthened.

      • KCI등재

        Coacervate-mediated novel pancreatic cancer drug Aleuria Aurantia lectin delivery for augmented anticancer therapy

        Sungjun Kim,Yunyoung Choi,김교범 한국생체재료학회 2022 생체재료학회지 Vol.26 No.3

        Background: Pancreatic cancer, one of the cancers with the highest mortality rate, has very limited clinical treatment. Cancer cells express abnormal glycans on the surface, and some lectins with a high affinity for the glycans induce apoptosis in cancer. In this study, the efficacy of Aleuria Aurantia lectin (AAL) for the treatment of pancreatic cancer was evaluated and the efficacy improvement through AAL delivery with mPEGylated coacervate (mPEG-Coa) was investigated. Methods: AAL was treated with pancreatic cancer cells, PANC-1, and the expression level of caspase-3 and subsequent apoptosis was analyzed. In particular, the anticancer efficacy of AAL was compared with that of concanavalin A, one of the representative anticancer lectins. Then, methoxypolyethylene glycol-poly(ethylene arginylaspartate diglyceride), a polycation, was synthesized, and an mPEG-Coa complex was prepared with polyanion heparin. The AAL was incorporated into the mPEG-Coa and the release kinetics of the AAL from the mPEG-Coa and the cargo protection capacity of the mPEG-Coa were evaluated. Finally, improved anticancer ability through Coamediated AAL delivery was assessed. Results: These results indicated that AAL is a potential effective pancreatic cancer treatment. Moreover, mPEGCoa rapidly released AAL at pH 6.5, an acidic condition in the cancer microenvironment. The initial rapid release of AAL effectively suppressed pancreatic cancer cells, and the continuous supply of AAL through the Coa transporter effectively inhibited proliferation recurrence of cancer cells. Conclusion: AAL is a potential novel drug for the treatment of pancreatic cancer therapeutic agent. In addition, a continuous supply of drugs above the therapeutic threshold using mPEG-Coa could improve therapeutic efficacy.

      • KCI등재

        Energy efficiency in Korea: analysis using a hybrid DEA model

        Sungjun Park,김진수 한국자원공학회 2016 Geosystem engineering Vol.19 No.3

        Given the increasing importance of energy efficiency, we appraise the situation in Korea by analyzing past energy consumption patterns. By using a modified hybrid model of index decomposition analysis, artificial neural network (ANN), and data envelopment analysis (DEA), we predict the optimal energy consumption and estimate the difference between the optimal and real values. We decompose primary energy consumption considering the energy loss in a transformation, correcting the over-fitting problem in ANN, and addressing the negative value issue in DEA. We find that energy consumption was the most efficient between 1993 and 1994, 1994 and 1995, 1997 and 1998, and 1999 and 2000. If the over-fitting and negative value problems are properly controlled, the presented LMDI-ANN-DEA hybrid model can be used to predict energy efficiency. The results of this study would be useful to analyze energy consumption patterns in the benchmark years of Korea and help the government formulate a suitable energy policy.

      • Increased risk of cardiovascular disease in patients with rosacea: A nationwide retrospective cohort study

        ( Sungjun Choi Daein Choi ),( Seulggie Choi ),( Sang Min Park ),( Hyun-sun Yoon ) 대한피부과학회 2020 대한피부과학회 학술발표대회집 Vol.72 No.1

        Background: There is emerging evidence that rosacea is associated with various systemic diseases. However, its association with cardiovascular disease (CVD) remains controversial. Objectives: We aimed to investigate whether patients with rosacea are at increased risk of developing CVD. Methods: This retrospective cohort study from the Korean National Health Insurance Service-Health Screening Cohort included patients with newly diagnosed rosacea (n=2,681) and age-, sex-, and index year-matched controls without rosacea (n=26,810) between 2003 and 2014. The primary outcome was subsequent CVD including coronary heart disease and stroke. Multivariable Cox regression analyses were used to evaluate adjusted hazard ratios (aHRs) for subsequent CVD adjusted for major risk factors of CVD. Results: Compared to controls, patients with rosacea were more likely to have more comorbidities and were less likely to smoke, consume alcohol, and exercise regularly. Rosacea patients displayed an increased risk for CVD (aHR 1.20, 95% CI 1.03-1.40) and coronary heart disease (aHR 1.29, 95% CI 1.05-1.60) compared to controls. The risk for stroke was not significantly increased (aHR 1.12, 95% CI 0.91-1.37). Conclusion: Patients with rosacea are more likely to develop subsequent CVD adjusted for major CVD risk factors.

      • KCI등재

        A Proposal of Shuffle Graph Convolutional Network for Skeleton-based Action Recognition

        Sungjun Jang(장성준),Han Byeol Bae(배한별),HeanSung Lee(이현성),Sangyoun Lee(이상윤) 한국정보전자통신기술학회 2021 한국정보전자통신기술학회논문지 Vol.14 No.4

        Skeleton-based action recognition has attracted considerable attention in human action recognition. Recent methods for skeleton-based action recognition employ spatiotemporal graph convolutional networks (GCNs) and have remarkable performance. However, most of them have heavy computational complexity for robust action recognition. To solve this problem, we propose a shuffle graph convolutional network (SGCN) which is a lightweight graph convolutional network using pointwise group convolution rather than pointwise convolution to reduce computational cost. Our SGCN is composed of spatial and temporal GCN. The spatial shuffle GCN contains pointwise group convolution and part shuffle module which enhances local and global information between correlated joints. In addition, the temporal shuffle GCN contains depthwise convolution to maintain a large receptive field. Our model achieves comparable performance with lowest computational cost and exceeds the performance of baseline at 0.3% and 1.2% on NTU RGB+D and NTU RGB+D 120 datasets, respectively.

      • KCI등재

        Flashlight Sintering Characteristics of the Inkjet-Printed Nanosized Copper Ink on an Auxiliary Heated Paper Substrate

        Sungjun Choi,Yong-Rae Jang,Hak-Sung Kim,Caroline Sunyong Lee 한국정밀공학회 2024 International Journal of Precision Engineering and Vol.11 No.2

        The flashlight sintering characteristics of inkjet-printed nanosized copper ink on paper substrates with varying pattern widths and intervals were studied. The copper nano particles (CNPs) synthesized using vapor self-assembled multilayer (VSAM) method to prevent oxidation, were produced with ink and patterned on a paper substrate through inkjet printing. The width and interval of the Cu patterns were varied from 350 to 550 μm to investigate the flashlight sintering tendency. It was confirmed that the Cu pattern resistivity decreased as the width of the Cu pattern increased, with decreasing interval between the Cu patterns. For the Cu pattern with the largest width and narrowest interval, the lowest specific resistivity was 6.43 × 10–6 Ω∙m. For auxiliary heating at 80 °C, the lowest resistivity of the Cu pattern was 7.10 × 10–6 Ω∙m with improved adhesion to the substrate, and this resistivity was 6.2 times lower than that without auxiliary heating. The temperature gradient of the CNP pattern during the flashlight sintering process was predicted using custom made simulation program. Therefore, the experiments and simulations confirmed that the wider the width and the narrower the interval between patterns, the flashlight sintering characteristics improved through higher heat generation by minimizing heat spreading.

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