• 대한수학회지
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• 제56권5호
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• pp.1355-1370
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• 2019

A curve $X{\subset}\mathbb{P}^r$ has maximal rank if for each $t{\in}\mathbb{N}$ the restriction map $H^0(\mathcal{O}_{\mathbb{P}r}(t)){\rightarrow}H^0(\mathcal{O}_X(t))$ is either injective or surjective. We show that for all integers $d{\geq}r+1$ there are maximal rank, but not arithmetically Cohen-Macaulay, smooth curves $X{\subset}\mathbb{P}^r$ with degree d and genus roughly $d^2/2r$, contrary to the case r = 3, where it was proved that their genus growths at most like $d^{3/2}$ (A. Dolcetti). Nevertheless there is a sector of large genera g, roughly between $d^2/(2r+2)$ and $d^2/2r$, where we prove the existence of smooth curves (even aCM ones) with degree d and genus g, but the only integral and non-degenerate maximal rank curves with degree d and arithmetic genus g are the aCM ones. For some (d, g, r) with high g we prove the existence of reducible non-degenerate maximal rank and non aCM curves $X{\subset}\mathbb{P}^r$ with degree d and arithmetic genus g, while (d, g, r) is not realized by non-degenerate maximal rank and non aCM integral curves.

• 무역상무연구
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• 제75권
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• pp.179-198
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• 2017

Recently, agricultural exports of Korea have steadily increased. But, no progress is being made at the WTO and DDA negotiations, the FTAs have played a leading role in the formulation of the international trade rules, and countries have been cleverly utilizing non-tariff barriers such as SPS and TBT, there is a growing need to respond to non-tariff barriers aggressively. On the other hand, since the FTA has the potential to activate the global value chain, there is a high need for exporting companies in the domestic agricultural sector to understand the structure of the global value chain in agriculture and actively utilize the global value chain. The non-tariff measures of agricultural commodities major trading partners in the field of domestic agricultural exports were mostly comprised of SPS measures and TBT measures. The non-tariff measures corresponding to inputs and production stages of value chain elements (seeds, seedlings) in the value chain were mainly reported in SPS measures. TBT measures are mainly carried out in selective packaging, storage, processing, distribution, and export sales. It is most important for agricultural export companies to know their position on the value chain and information on non-tariff measures of importing countries in order to actively utilize the global value chain. Since there are non-tariff barriers that are difficult to be solved at the individual enterprise level, active government support of the government is not only important but also actively promoting relevant information to farmers and agricultural exporters. In addition, potential export farmers and prospective export companies will be able to identify TBT and SPS and other non-tariff barriers well in advance, and respond to them in advance. Also, through networking with export related organizations and overseas buyers, It is very important that policy support from the perspective of global value chain is linked effectively.

• 자원ㆍ환경경제연구
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• 제23권2호
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• pp.349-364
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• 2014

본 연구에서는 제조업종의 전력소비와 생산활동 간 인과관계를 분석하기 위해 1985년~2011년 동안의 업종별 연간 전력소비량과 실질부가가치 자료를 이용하여 단위근검정, 공적분검정, 오차수정모형을 통해 시계열분석을 수행하였다. 연구결과 제조업 전체적으로 양방향의 인과관계가 존재하는 것으로 나타났다. 업종별 특성에 따라 구분하여 도출한 인과관계에서도 전력비다소비업종, 고부가가치업종, 저부가가치업종에서는 전력소비와 생산활동 간에 양방향의 인과관계가 존재하는 것으로 나타났다. 다만 전력다소비업종의 경우 전력소비에서 생산활동으로의 단방향 인과관계가 발견되었다. 이러한 결과는 전력수요관리정책은 효율개선을 우선적으로 추진하여 생산활동에 미치는 부정적인 영향을 최소화해야 하고, 증가하는 전력수요를 안정적으로 충족하기 위한 전력공급체계를 구축할 필요가 있음을 보여준다.

• 한국태양에너지학회 논문집
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• 제36권1호
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• pp.11-18
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• 2016

The local wind systems in the Pohang region were categorized into wind sectors. Still, thorough knowledge of wind resource assessment, wind environment analysis, and atmospheric environmental impact assessment was required since the region has outstanding wind resources, it is located on the path of typhoon, and it has large-scale atmospheric pollution sources. To overcome the resolution limitation of meteorological dataset and problems of categorization criteria of the preceding studies, the high-resolution wind resource map of the Korea Institute of Energy Research was used as time-series meteorological data; the 2-step method of determining the clustering coefficient through hierarchical clustering analysis and subsequently categorizing the wind sectors through non-hierarchical K-means clustering analysis was adopted. The similarity of normalized time-series wind vector was proposed as the Euclidean distance. The meteor-statistical characteristics of the mean vector wind distribution and meteorological variables of each wind sector were compared. The comparison confirmed significant differences among wind sectors according to the terrain elevation, mean wind speed, Weibull shape parameter, etc.

• 디지털융복합연구
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• 제19권5호
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• pp.229-239
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• 2021

본 연구를 위하여 정부의 금융관련 부서의 발표자료와 각 금융기관 및 전자금융 관련 기관의 자료를 광범위하게 분석한 결과, 우리나라의 전자금융 환경에 있어 첫째) 비대면 금융의 확대, 둘째) 금융권의 원격근무, 셋째) 공인인증의 폐지, 넷째) 고도화되는 보이스피싱, 다섯째) 금융산업의 개방과 형태의 다양화, 여섯째) '지갑 없는 사회'의 도래 등의 실제적 변화가 나타나고 있다. 하지만 이상의 문제 외에도 예를 들어, 4차 산업혁명으로 촉발된 전 세계적 변화는 금융보안 분야에도 전파되어, 인공지능 기술/딥러닝 기술/사용자 분석 기술/딥페이크(deepfake) 기술 등과 같은 문제는 특히 대응하기 어려운 위험요소이다. 전자금융은 사회적으로 점점 그 비중이 확대되고 있는 만큼, 전자금융과 그 환경의 문제 및 그로 인한 범죄와 범죄 수사의 분야까지도 꾸준하게 연구되어야 마땅하다.

• 한국응급구조학회지
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• 제6권1호
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• pp.153-168
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• 2002

Since 1992, conventional fire fighting businesses have been converted into a metropolitan autonomous fire fighting system to be ready for a variety of disasters. However, the corresponding investment has been overlapped due to the non-integration of businesses to prevent any potential disasters, and a series of collaborative systems have been not functioning so well. In the meantime, our fire fighting sector has been trying to set up its own clean and faithful position by abolishing any inconvenient system or outsourcing private sectors, and expanded its work scope from conventional fire fighting even to rescue and emergency works. While focusing on handling disaster, the fire fighting sector has been widely trusted and reliable throughtout our nation. Moreover, our fire fighting sector has secured nation wide mobile organizations, technical personnel by field, special equipments and independent communication network. In addition, the fire fighting sector has knowledges, expertise and capabilities required for managing disasters, while in charge of almost every disaster management works including fire, explosion, collapse, disaster and flood. It becomes an organization for comprehensive disaster management under an absolute national trust, which is based on the system for prevention, preparation and countermeasure against a variety of disasters. Thus, our fire fighting sector must make many efforts and try to modernize conventional education and training. The ways to facilitate rescue and emergency works may include the nurture of technical fire fighting personnel along with modernized equipments, the reinforcement of rescue and emergency education, the facilitation of operating civil defense corps, the facilitation of operating volunteer fire fighting corps, the better arrangement of 119 briefing room for public healthcare in provincial offices, the sterilization of rescue instruments and equipments the better repair education for emergency rescue member, the establishment of regional emergency assistant system and the expansion of fire fighting personnel and equipments. In terms of reinforcing the functions and services of rescue 119 and emergency corps, we must review the following considerations: Building up security system along with operational expansion, building up a system for emergency medical treatment, building up a comprehensive information management system for rescue and emergency, constructing a provincial safety museum and so forth. For the ways to better the works of rescue 119 we can review the following considerations : Improving the education for fire fighting training corps under Jeju Provincial Fire and Disaster Management Department, providing rescue members with more opportunities for clinical practices, enhancing the morale of rescue members, installing a comprehensive briefing room for emergency rescue members, building up medical networks along with reasonable policies for information service, operating the consulting system for rescue 119 and so on. If these requirements are met, it is expected that the fire fighting departments in Jeju province can cope with every accident and disaster a little more rapidly and quickly in compliance with local needs, so that they can keep their own position as a public fire fighting organization which may be trusted by the public.

• 지역연구
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• 제38권4호
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• pp.31-44
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• 2022

본 연구는 당해도시와 연담도시권 내 도시들의 특성과 단위면적(m²)당 아파트 거래가격 간의 상관성을 확인하는 목적을 가지고 수행되었다. 구체적으로 당해 도시 및 연담도시권 내 도시들이 인구 특성. 산업 특성, 도시계획사업 및 개발사업 특성, 입지적 특성이 아파트 m²당 매매가격 형성의 원인으로 작용하는지, 당해도시와 연담도시 간에 차별적인 특성을 보이는지 또한 수도권과 비수도권 간에 차별적인 특성을 보이는지를 상관분석, 다중회귀분석을 통해 파악하고자 하였다. 인구특성 부문에서는 모두 상관성이 있는 것으로 나타났다. 산업부문과 도시계획사업 및 개발사업 특성 부문은 당해도시에서는 유의하지 않게 나오지만, 연담도시권으로 분석하여 볼 때, 유의하게 나타나는 것으로 된다. 수도권과 비수도권으로 분류하여 분석하여 볼 때, 인구 부문은 수도권 및 비수도권 모두 유의하게 나타나며, 입지적 부문에서는 강남구와의 거리만이 유의하게 나타난다. 이는 지금 수도권으로 인구가 집중되기 때문에 아파트 m²당 매매가격도 수도권 집중으로 높은 가격대를 형성하는 것으로 이와 같은 결과가 나타나는 것으로 판단된다. 본 연구는 아파트 m²당 매매가격에 영향을 미치는 요인을 분석할 때, 당해도시 뿐 아니라 인접 지역들의 특성을 같이 분석하여야 한다는 결과를 보여주며, 또한 부동산 정책을 실시할 때에도 당해도시 뿐 아니라 연담도시권으로 설정하여 주택시장 모니터링이 함께 이루어질 필요가 있다는 점을 시사한다.

• 보건행정학회지
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• 제13권4호
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• pp.84-98
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• 2003

This research objective is to determine the optimal price break points for n­block tariff, because comparing non­linear pricing with uniform pricing on the basis of profit, n­block tariff outperforms two­part tariff, all unit discount price schedule, and uniform pricing. Although the merits of non­linear pricing are well documented, the attempt to practice the non-linear pricing in medical service sector has been relatively rare. The determination of the parameters under n­block tariff is the interesting decision making agenda for marketers. Under n­block tariff, the marketers should decide the optimal price break points and the optimal marginal price for each price zone. The results can be summarized as follows: The researchers found that mixture model can be the feasible methodology for determining the optimal number of n­block tariff and identifying the optimal segmentation criteria. We demonstrate the feasibility and the superiority of the mixture model by applying it to the database of medical examination. The results appear that the number of patients per month can be the optimal segmentation variable. And 6­block tariff is the optimal price break for this medical service.

• 전자통신동향분석
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• 제35권1호
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• pp.12-24
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• 2020

To keep pace with other powerful nations in this era of the era of digitalization and to emerge stronger in the world, the defense forces of South Korea aim to innovate and prepare themselves for digital battlefields of possible wars in the future. The resources in the defense sector, which is the core of defense intelligence, is based on an intelligent mission collaboration tactical network system via cyber, command, control, communication, and computer (C4), and military and non-human weapons. Defense intelligence depends on the degree of the convergence of advanced Information and communication technologies (ICTs). Considering this aspect of defense intelligence, We plan to determine the application status of defense blockchain technology and examine the feasibility of applying blockchain technology and the core of applied technology. Generally, a key feature of blockchain technology is its data integrity in untrusted environments. There are various types of core technologies for the blockchain depending on the target areas of application in the defense sector, and it is also essential to derive new application strategies for core technologies that are applied in combination with other ICT technologies. We plan to demonstrate new defense ICT converged technologies (DNAB2: Data, Network, AI, BigData, Blockchain) and DNAB2-As-Services in the defense strategy.

• 산학경영연구
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• 제22권1호
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• pp.1-25
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• 2009

일반적으로 공기업의 문제는 경제적 합리성이라는 속성과 너무 괴리되어 있다는 점에서 비롯되어 우리나라의 경우 정부 상위관리기관과 정치권의 낙하산 인사의 대상으로 악용되며 노조와의 유착 등으로 인한 비능율과 부패의 온상처럼 비쳐져왔다. 이에 많은 사람들이 공기업을 개혁해야 한다는 생각을 하게 되었다. 앞으로의 공기업 개혁방향은 명확하다. 기간산업 등 민영화가 곤란한 부문은 정부의 소유 및 통제 하에 공기업 효율성을 제고시키는 경영관리 시스템을 구축해야 하고, 이외의 부문에서 효율화가 어려운 공기업은 민간에 경영권을 이양하는 민영화정책을 적극 고려하는 발상의 전환이 필요하다.