• Journal of Electrical Engineering and Technology
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• 제13권2호
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• pp.540-549
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• 2018

This paper proposes the method of active distribution network expansion planning considering distributed generation integration and distribution network reconfiguration. The distribution network reconfiguration is taken as the expansion planning alternative with zero investment cost of the branches. During the process of the reconfiguration in expansion planning, all the branches are taken as the alternative branches. The objective is to minimize the total costs of the distribution network in the planning period. The expansion alternatives such as active management, new lines, new substations, substation expansion and Distributed Generation (DG) installation are considered. Distribution network reconfiguration is a complex mixed-integer nonlinear programming problem, with integration of DGs and active managements, the active distribution network expansion planning considering distribution network reconfiguration becomes much more complex. This paper converts the dual-level expansion model to Second-Order Cone Programming (SOCP) model, which can be solved with commercial solver GUROBI. The proposed model and method are tested on the modified IEEE 33-bus system and Portugal 54-bus system.

• Journal of Electrical Engineering and Technology
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• 제4권1호
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• pp.1-12
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• 2009

In recent years, integration of new distributed generation (DG) technology in distribution networks has become one of the major management concerns for professional engineers. This paper presents a dynamic methodology of optimal allocation and sizing of DG units for a given practical distribution network, so that the cost of active power can be minimized. The approach proposed is based on a combined Genetic/Fuzzy Rules. The genetic algorithm generates and optimizes combinations of distributed power generation for integration into the network in order to minimize power losses, and in second step simple fuzzy rules designs based upon practical expertise rules to control the reactive power of a multi dynamic shunt FACTS Compensator (SVC, STATCOM) in order to improve the system loadability. This proposed approach is implemented with the Matlab program and is applied to small case studies, IEEE 25-Bus and IEEE 30-Bus. The results obtained confirm the effectiveness in sizing and integration of an assigned number of DG units.

• 정보학연구
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• 제3권3호
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• pp.103-115
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• 2000

국제물류정보는 국가경쟁력과도 직결되는 문제로서 지금까지 여러 관련기관에서 물류정보시스템을 구축해서 운영해오고 있다. 그러나 정보시스템간 정보가 중복되는 부분이 많아 비효율적으로 운영되고 있어 이에 대한 개선책이 요구되고 있다. 독립적인 일괄정보시스템을 구축하는데는 상당한 시간과 투자가 뒤따르므로 기존의 정보시스템을 연계하여 통합하는 방법이 효율적으로 물류정보화를 구축할 수 있는 실행가능한 대안이다. 따라서 본 연구에서는 기존의 물류정보서비스망들이 연계되어 서로의 데이터베이스를 공유할 수 있는 방법이 국가 경제적인 관점에서 효율적인 국제물류정보망을 갖추는 지름길임을 인식하고 그 방안을 제시하고 있다.

• 한국의류산업학회지
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• 제23권5호
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• pp.598-610
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• 2021

Korean textile and fashion companies have played a major role not only in developing the Korean economy since Korea's industrialization started in the early 1960s but also in providing opportunities to form and expand chaebols (conglomerates of family-owned businesses). This study reviewed and analyzed the historical development of chaebols, which started the fiber/textile/fashion business before the 1960s and maintained their chaebol status until 2010. The Samsung, Samyang, Kolon, Taekwang, Hyosung, LG, and SK groups were included in the study, and data were collected from diverse sources, including the publications and websites of the chaebol companies, newspapers, magazines, and research articles. The strategies of the companies at the corporate and group levels were examined based on the corporate lifecycle, which consists of existence, growth, maturity, rebirth, and decline stages. The results showed that all the analyzed companies actively engaged in product line expansion during the growth stage. Vertical integration, especially backward integration, was common during the growth stage. Some groups established new companies to manage additional product lines and integration, while others pursued growth strategies mainly at the corporate level. The rebirth stage occurred in only a few companies and groups. Some seemed to be going through the decline stage, and the rest of the groups exited the textile and fashion business.

• International Journal of Knowledge Content Development & Technology
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• 제8권4호
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• pp.19-31
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• 2018

The recognition of public libraries as development partners places an onus on public libraries to provide services that will enhance national integration and development. Whereas libraries have been known to provide information resources in various formats, recent developments around the world have shown that it is no longer enough to provide information to users. Users are being encouraged to become knowledge producers and not just consumers. In this regard, libraries are rethinking their strategies. One of the consequences of this, is the creation of makerspaces: a space for creating things within the library. This paper explores the prospects of makerspaces in Nigerian public libraries. The paper identified how makerspaces could lead to national development by providing access to technology, providing opportunity for users to work together thereby promoting unity and togetherness among the citizenry of a given society as well as providing an enabling environment for people to be creative. The paper argued that makerspaces in Nigerian public libraries will lead to increased patronage and users' satisfaction, change in perception of librarians by the public, promote synergy among citizens and result in economic development.

• International Journal of Computer Science & Network Security
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• 제21권3호
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• pp.76-82
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• 2021

An anthological analysis of known literature and historical sources is carried out in the work. It was found that the development of foreign language training of future professionals was influenced by a number of factors: socio-economic (focus on the needs of the labor market, integration into the international space, scientific and technological progress); educational (updating legal documents in the field of education, standardization of educational content, development of methods of professional development of a specialist). The historical period is analyzed and the following stages are determined: ideological (realization of ideological imperative in language and professional training of future specialists; educational-methodical (preparation according to unified curricula, reading and translation as a leading type of speech activity); integration (integration of foreign language teaching and multicultural education)), methodological (use of traditional verbal methods, standardized textbooks). Thus, the research conducted in the article indicates the periods (stages) of formation, functioning and development of foreign language education.

• 무역학회지
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• 제47권6호
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• pp.21-37
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• 2022

This study sought to look at why Facebook and Twitter, which have dominated the social media market, are moving away from other services. To this end, we sought to identify the causes of churn in terms of firm-level strategic direction and resource allocation, which have not been actively presented to the studies. For this purpose, this study divides the social media firm's strategies into horizontal expansion strategy and vertical integration strategy based on the existing reports and researches, and how each of the representative firms' strategies affects users' switching behavior. As a result, there was a significant difference in the strategic direction of the social media firm, when a horizontal expansion strategy is taken, user's switching intention is higher than when a vertical integration strategy is taken. In addition, the switching intention according to the level of dependence showed that the lower the dependence on social media, the higher the intention to switch to other media. The findings are expected to provide highly realistic and concrete strategic alternatives for a variety of economic actors, such as individuals and companies who want to do business using social media.

• 한국사회복지학
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• 제58권1호
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• pp.237-264
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• 2006

최근 장애 정의에 있어 환경적인 요인이 중요한 비중을 차지하게 됨에 따라 새로운 패러다임에 근거 한 사회통합 논의의 필요성이 대두하게 되었다. 한편 장애문제를 비장애인과 마찬가지로 장애의 경험에 국한되지 않고 총체적인 삶의 경험에 초점을 맞추어야 한다는 생애주기별 접근의 중요성이 강조되고 있다. 본 연구의 목적은 생애주기별로 자립생활 패러다임에 따른 사회통합 수준을 측정하고 영향요인에 대해 분석함으로써 질적 측면에서 정책적, 실천적 함의를 제공하는 데 있다. 자립생활 패러다임에 따른 사회통합의 하위차원은 일상생활 자율성, 물리적 접근성, 사회적 지지의 적절성, 경제적 안정정도, 선택권, 심리적 임파워먼트의 6개 차원으로 구분하였다. 조사대상자는 서울과 경기지역에 거주하는 지체 및 뇌병변장애인 591명이며, 전화설문조사방법을 사용하였다. 연구결과 생애주기별로 사회통합의 하위차원에 따라 다른 특성을 보였고 사회통합의 각 차원별로 영향을 미치는 요인이 상이하게 나타났다. 이러한 결과를 통해 얻을 수 있는 중요한 함의는 사회통합의 증진을 위한 장애정책의 방향은 생애주기별로 차별화 되어야 하며 장애인의 일상 활동이나 접근성의 향상뿐만 아니라 선택권이나 심리적 임파워먼트의 증진을 위한 노력이 병행될 필요가 있다는 것이다.

• International Journal of Computer Science & Network Security
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• 제22권1호
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• pp.69-76
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• 2022

At the current stage of globalization and European integration of Ukraine, the aspects related to the effective fight against corruption in the system of economic security of our country are receiving more and more attention, as they become a prerequisite for continuing reforms based on international funding. In order to consider this issue and solve this problem, the necessary step is to develop and implement real mechanisms of the system for detecting and preventing corrupt behavior, which are based on international anti-corruption standards. The leading component of this system is the management of corruption risks in the system of economic security in order to identify them and implement measures to reduce them. This study analyzes the corruption perception index in Ukraine in recent years, which showed a positive, albeit somewhat slow dynamics of its growth, indicating a gradual increase in overcoming corruption through the introduction of a number of anti-corruption measures and changes. It is proved that the current stage of socio-economic development of the country contributes to strengthening the processes of combating corruption and preventing corruption risks, creating an effective and efficient anti-corruption system of the state. The concept of "corruption" was studied, it was found that in the field of public administration it is considered from different positions and is closely related to the concept of "corruption risks". The essence and features of corruption risks are studied, the preconditions of their occurrence are formulated, the relationship between the causes of corruption risks and economic security in the field of public authority has been established. The system of corruption risk management is considered and its components are characterized. It is proposed to increase the effectiveness of anticorruption policy through the implementation of measures aimed at investigating the causes of corruption risks, as well as developed effective and effective means of reducing corruption risks within the system of economic security

• 유통과학연구
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• 제12권11호
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• pp.35-43
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• 2014

Purpose - This study evaluates the mutual influential power regarding the trade volumes of Japan and USA, based on a literature review and an empirical analysis. Through the literature review, I could evaluate each country's actual import-export volume and its status. Further, I could evaluate how each country could influence its trade outcome, through empirical analysis. Research design, data, and methodology - This study aims to review the trade structure to improve Japan-USA economic and social cooperation, as the two countries have reciprocal complementary features, and to examine trade weaknesses and analyze factors influencing trade and its direction, as well as to identify ways to expand trade. Results - The intra-economic potential cooperation fields are numerous. Additionally, anticipated profits from these fields are stable as compared to other fields in the regional economic integration. Conclusion - The interrelations between the two economic identities can provide optimal opportunities for industrial technology cooperation. Under the current aggravated competition in industrial fields, it is advisable to identify ways to secure stable resource suppliers, including the development of export markets.