• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 춘계학술대회 논문집
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• pp.111-115
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• 2002

The TGV has been developed in a competition with the domestic air transport. But recently, with congestion, do-regulation of air transport and with the increase of number of cities served by the TGV, operators of rail and air transport are looking for a complementarity between the two modes. In this paper, we'll analyse the background and development of high-speed rail-air links in France for a development plan of high speed transportation network in a national level in Korea.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 하계종합학술대회 논문집(1)
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• pp.113-116
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• 2002

It is required to network to make more intelligent packet processing and forwarding for increasing bandwidth and various services. Classification provides these intelligent to network which is acquired by increasing number of rules in classification rule set. In this Paper, we propose a classification algorithm efficient to scalable rule set ahead as well as Present small rule set. This algorithm has competition to existing methods by performance and advantage that it is mixed with another algorithm because il does not change original shape of rule set.

• 한국빅데이터학회지
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• 제3권2호
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• pp.87-99
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• 2018

본 연구는 공공계약의 여러 가지 형태 중 나라장터(KONEPS)를 통해 체결된 물품구매, 용역, 시설공사 등의 계약 자료를 수집하여 공공계약에서 입찰참가자수의 영향요인을 분석한다. 공공계약에서 입찰참가자수가 중요한 이유는 경쟁성 확보를 통한 합리적 계약 체결여부를 판단하는 최소한의 기준이 될 수 있으며, 발주기관의 예산절감 또는 입찰참가자의 수익성과 밀접한 관계가 있기 때문이다. 연구 목적은 공공계약에서 입찰참여자들의 입찰참여 여부는 어떤 요인에 의해 결정되는지를 분석하여 현재 공공계약에서 입찰참여에 관한 문제점과 정책적 시사점을 제시하기 위한 것이다. 본 연구는 5만여 공공기관이 나라장터로 발주하여 30만여 개인사업자 및 법인이 참여한 435만여 물품구매, 용역, 시설공사 등 많은 계약 건을 비교 분석함으로써 기존의 샘플링 기반 연구와의 차별성을 가진다. 연구모형으로 공고일수, 예산금액, 계약방법, 낙찰방법 등을 독립변수로, 입찰참가자수를 종속변수로 각각 도출하여 활용한다. 조사 분석은 빅데이터 및 다차원 분석기법을 사용한다. 분석결과 첫째, 공공발주 사업의 예산금액의 규모가 클수록 입찰참가자수가 적고, 이는 입찰참가자들이 예산금액이 클수록 수주할 확률이 매우 낮아진다고 인지하는 것에 기인한 것으로 공공사업에 대한 신뢰성 제고를 위하여 분리발주에 대한 제도적 장치가 필요하다는 것을 의미한다. 둘째, 계약방법으로는 제한경쟁이 일반경쟁 보다 입찰참가자수가 많고, 이는 계약방법이 입찰참가자수와 공공사업의 예산절감에 영향을 줄 수 있다는 것을 의미한다. 셋째, 공고일수는 입찰참가자수에 유의미한 영향을 미치지 않았으며 이는 나라장터를 통해 많은 개인사업자 및 법인들이 입찰정보를 숙지하고 있어 정보불균형의 문제는 심각하지 않다는 것을 의미한다. 넷째, 낙찰방법으로는 적격심사낙찰제가 최저가낙찰제 보다 입찰참가자수가 많고, 이는 낙찰방법이 입찰참가자수와 입찰참가자의 수익성에 영향을 줄 수 있다는 것을 의미한다.

• 한국실내디자인학회논문집
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• 제18권5호
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• pp.137-146
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• 2009

The purpose of this study is to analyze the planning concept and spatial characteristics of the multi-housing units in prize-wining works of design competition since 2007. Literature review and content analysis were used for this study and 199units over $59m^2$ were analyzed to review the planning concept, spatial composition and layout. The results of this study were as follows; 1)The planning concept of these units were divided into three aspects; that is, eco-friendly, rational and sustainable unit plan by means of functional, environmental-friendly and future-oriented aspects. 2)Most unit plans had 3LDK+2bath and 4Bay types including family room as a public space. This results shows that family-room and bathroom has recently become more important than number of rooms in multi-housing units planning. 2)In terms of the spatial composition of LDK and Master Bed room, LDK area become large, open type and master-zone were showed 'bed room+dress and powder room+bath' type. 3)The entrance has a intermediated space as a balcony or a former space and the privacy of LDK space was protected from the entrance. This study has a significant moaning on grasping current trend in Korean multi-housing and to provide Information for future direction on housing-unit design.

• 한국정보과학회논문지:정보통신
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• 제35권4호
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• pp.337-344
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• 2008

음파를 이용한 수중 센서 네트워크는 지상에서의 무선 네트워크 환경과 다르게 긴 전파 지연과 낮은 전송 속도를 가진다. 따라서 기존의 선 네트워크에서 사용되는 프로토콜을 수중 센서 네트워크에 적용될 경우 매우 제한적이며 비효율적으로 사용될 수 있다. 본 논문에서는 수중 센서 네트워크에서 에너지 효율과 처리율 향상을 위한 MAC 프로토콜을 제안한다. 제안된 프로토콜은 슬롯 기반의 경쟁 기법을 사용하며 데이타 패킷을 전송하기 위해 사전에 슬롯을 예약하게 된다. 제안된 프로토콜에서는 경쟁방식에 의하여 노드간의 충돌이 발생할 수 있으나 예약방식에 의하여 인접 노드의 채널을 미리 인지함으로써 충돌을 최소화하고 노드의 불필요한 에너지 소모를 줄임과 동시에 처리율 향상을 가져온다. 제안된 프로토콜에 대한 성능을 평가하기 위해 시뮬레이션을 수행하며 소모된 에너지, 충돌횟수, 채널효율, 처리율과 전송지연시간에 대하여 평가한다. 또한 기존의 MAC 프로토콜과 비교함으로써 제안된 프로토콜이 기존의 프로토콜에 비해 성능이 우수함을 보인다.

• 산업경영시스템학회지
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• 제40권1호
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• pp.105-113
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• 2017

Network externality can be defined as the effect that one user of a good or service has on the value of that product to other people. When a network externality is present, the value of a product or service is dependent on the number of others using it. There exist asymmetries in network externalities between the online and traditional offline marketing channels. Technological capabilities such as interactivity and real-time communications enable the creation of virtual communities. These user communities generate significant direct as well as indirect network externalities by creating added value through user ratings, reviews and feedback, which contributes to eliminate consumers' concern for buying products without the experience of 'touch and feel'. The offline channel offers much less scope for such community building, and consequently, almost no possibility for the creation of network externality. In this study, we analyze the effect of network externality on the competition between online and conventional offline marketing channels using game theory. To do this, we first set up a two-period game model to represent the competition between online and offline marketing channels under network externalities. Numerical analysis of the Nash equilibrium solutions of the game showed that the pricing strategies of online and offline channels heavily depend not only on the strength of network externality but on the relative efficiency of online channel. When the relative efficiency of online channel is high, the online channel can greatly benefit by the network externality. On the other hand, if the relative efficiency of online channel is low, the online channel may not benefit at all by the network externality.

• 수산경영론집
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• 제32권2호
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• pp.51-72
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• 2001

This study intends to review the development of Squid Angling Fisheries of Korea and Japan and subsequent changes in the fisheries regime as well as management conditions and to examine reorganization directions. Although catches and productivity are all increasing in Korea and Japan as the squid resource in the East Sea is improving, the number of fishing vessels and the conditions of fisheries management are showing a symmetrical relationship. The former is increasing in Korea and decreasing in Japan while the latter is aggravating in Korea and rather stable in Japan. And while the competition between the two countries for more fishing grounds and catches are not that serious since the resource is relatively increasing, the catch and price competition with other domestic fisheries is a more significant problem. Furthermore, even though light restriction is implemented in both countries in order to suppress over-competition, it is adopted as a means to curtail management costs and block over-investment rather than to adjust international or inter-fisheries circumstances. Japan has been implementing the TAC system on squid resources since 1998. However, it has a different meaning than as a resource management method in its original sense because it is based on the highest catch level of the past and takes into consideration the fishermen's management conditions. In case of Korea, it is necessary to establish a plan to strengthen its fisheries management competence to address its shrinking catch in the Japanese waters. The developments mentioned so far have appeared amidst the increase of squid resources, and if such conditions disappear, problems such as international allocation of catches and fishing seasons, access to fishing grounds, and domestic conflicts among different fisheries will emerge.

• Journal of the Korean Data and Information Science Society
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• 제22권4호
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• pp.765-773
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• 2011

오늘날 국내의 많은 대학은 글로벌 교육시장이 발달하고 입학 지원자수가 감소하게 됨에 따라 대학 간 경쟁이 심화되고 특히 지방대학에서는 입학충원률을 높이고 중도탈락률을 감소시키기 위하여 치열하게 경쟁하고 있다. 이러한 경쟁에서 살아남기 위해서 다양한 노력을 기울이고 있는바, 대학 교육서비스 품질 향상이 일차적이고 우선적인 문제라고 할 수 있다. 이에 본 연구에서는 고등교육분야의 특정한 상황에 맞는 대학 교육서비스 품질 측정도구를 개발하고, 이를 통하여 대학 교육서비스 품질을 결정하는 요인을 도출해 보았으며, 전반적 만족도나 구전효과에 대해 통계적으로 유의한 요인이 무엇인지 규명해 보았다. 나아가 29개의 품질속성에 대해 중요도-만족도 변환지수를 이용하여 해석한 결과, 교수요인, 신뢰요인, 유형요인에 대해서는 매우 긍정적인 평가인 반면 직원요인에 대해서는 비교적 덜 긍정적으로 평가되었다.

• 한국시스템다이내믹스연구
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• 제7권2호
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• pp.191-213
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• 2006

Increasing of the number of Roe Deer in Jesudo is regarded as an direct cause of the damages of Roe Deer - i.e. damages of crops and trees by Roe Deer and traffic accidents between human and Roe Deer. But, no study of the number of Roe Deer in Jejudo has been found and never has been progressed it and nobody convinces about the total number of Roe Deer in Jejudo. In this paper, we focus at the moving pressure which enforces Roe Deer to move the other places. Moving pressure is appeared when the habitat environment destruction of Roe Deer and it forces Roe Deer in hilly section to move the middle mountains section and the low section. This moving pressure promotes the moving of Roe Deer to the other places and then the total number of Roe Deer in new places are increasing. High density of Roe Deer makes the habitat environment bad and increases the competition of Roe Deer. These patterns are repeated continuously. The habitat environment of Roe Deer is related with human life area very closely. We should keep and preserve our nature and environment, and if we develop our nature then we must consider our ecosystem in all aspects. It's the most important thing to us and Roe Deer and other living things.

• 한국운동역학회지
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• 제31권4호
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• pp.234-240
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• 2021

Objective: The purpose of this study is to analyze the distance, number, duration, velocity of sprints generated during women's hockey competition by position to identify sprint patterns. Method: The data was collected in 17 matches between 2016 and 2018, 49 elite women's hockey players were tested using SPI-HPU to identify differences by position using SPSS 25.0. A total of 376 Sprint information was utilized. Results: First, women's hockey players all showed significant differences in the number of sprints, duration, distance, and max velocity depending on their positions. Second, there was a significant difference in the number of sprints in the difference between quarters. And the factors of duration, distance, and max velocity showed differences between positions. Third, according to the results, there were differences in the number of times, duration, distance, and max velocity in the difference between positions. Conclusion: These results can be confirmed the sprint patterns of depends on position during the women's hockey game and can be used as information for the development of physical and tactical training programs.