• The Journal of Asian Finance, Economics and Business
• /
• v.10 no.2
• /
• pp.183-193
• /
• 2023

This paper proposes and examines the economic impact of infrastructure improvement on the San-En-Nanshin region in the Chubu area of Japan. We develop a single transportation computable general equilibrium (CGE) model for each subregion within the San-En-Nanshin region. The explicit modeling of the transportation infrastructure is defined based on interregional commuting flows and business trips, considering the spatial structure of the San-En-Nanshin economy. A CGE model is integrated with an interregional transportation network model to enhance the framework's potential for understanding the infrastructure's role in regional development. To evaluate the economic impact of transportation improvement, we analyze the interrelationship between travel time savings and regional output and income. The economic impact analysis under the CGE framework reveals how transportation facilities and systems affect firm and household behavior and therefore induce changes in the production and consumption of commodities and transportation services. The proposed theoretical model was tested by using data from the 2005 IO tables of each subregion and the 2006 transport flow dataset issued by the Ministry of Land, Infrastructure, Transport, and Tourism in Japan. As a result, the paper confirms the positive effect of transportation investment on the total output and income of the studied region. Specifically, we found that while economic benefits typically appear in urban areas, rural areas can still potentially benefit from transportation improvement projects.

• SUVANNABHUMI
• /
• v.16 no.1
• /
• pp.175-203
• /
• 2024

With the enactment of international free trade and economic agreements and cooperation, BIMP-EAGA is an opportunity to accelerate development and economic growth in eastern Indonesia. This subregional cooperation could be used to reduce the development gap or inequality between the western and eastern regions, which are geographically, demographically, and economically different. This cooperation also may accelerate development in the border area. This study analyzes Indonesia's policies related to connectivity in BIMP-EAGA subregional cooperation and its implementation. The study results show that the National Secretariat of Sub-Regional Economic Cooperation has encouraged cooperation clusters ranging from natural resources, transportation, infrastructure, ICT, and tourism to MSMEs. In terms of connectivity, Indonesia is also involved in the development program of three economic corridors, namely West Borneo, East Borneo, and Sulu-Sulawesi. Indonesia's involvement in the three corridors has boosted the connectivity of Indonesia's territory, especially border areas, with neighboring countries. Connectivity has covered not only physical but also institutional and people-to-people dimensions. However, there are still several challenges, ranging from the standardization of the Customs, Immigration, and Quarantine (CIQ) mechanisms, improvement of institutional quality, and consistent strong political will among the involved parties. In addition, considering the vulnerability of the BIMP subregion to transnational crimes and acts of radical terrorism, BIMP-EAGA needs to think about solutions to overcome these cross-border security problems so that the momentum of development in the subregion may be sustained.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.22 no.1
• /
• pp.108-113
• /
• 2012

Routing paths are mightily important for the network security in WSNs. To maintain such routing paths, sustained path re-selection and path management are needed. Region segmentation based path selection method (RSPSM) provides a path selection method that a sensor network is divided into several subregions, so that the regional path selection and path management are available. Therefore, RSPSM can reduce energy consumption when the path re-selection process is executed. However, it is hard to guarantee optimized secure routing path at all times since the information using the path re-selection process is limited in scope. In this paper, we propose partial path selection method in each subregion using preselected partial paths made by RSPSM for routing path optimization in SEF based sensor networks. In the proposed method, the base station collects the information of the all partial paths from every subregion and then, evaluates all the candidates that can be the optimized routing path for each node using a evaluation function. After the evaluation process is done, the result is sent to each super DN using the global routing path information (GPI) message. Thus, each super DN provides the optimized secure routing paths using the GPI. We show the effectiveness of the proposed method via the simulation results. We expect that our method can be useful for the improvement of RSPSM.

• Proceedings of the Korean Information Science Society Conference
• /
• 2001.10b
• /
• pp.373-375
• /
• 2001

본 논문에서는 연속된 프레임에서 특징점을 추출하고 특징점의 유사도를 Hough 공간에 누적하여 정확한 이동을 찾아내는 기법을 제시한다. 특징점은 예지의 시작점, 끝점, 분기점과 굴곡점을 사용한다. 정합을 위하여 특징점 주위의 평균 밝기, 굴곡점의 굴곡각을 이용하며, 물체 주위에 물체보다 특징이 강한 배경에 민감하지 않게 동작하기 위하여 Hough 공간상의 극대값들에 대하여, 분할 영역의 평균과 표준 편차를 비교함으로써 정확한 이동 경로를 산출한다. 제안하는 알고리즘을 실제 영상에 적응한 경우 배경의 특징이 매우 강한 경우 Hough 공간의 최대값을 찾는 기법이 해결할 수 없는 부분도 정확히 추적하는 결과를 보인다.

• Journal of the Korean Institute of Landscape Architecture
• /
• v.14 no.3
• /
• pp.47-57
• /
• 1987

본 연구의 목적은 인간 생태학적 조경계획의 이론적 배경과 계획과정을 살펴보고, 인간 생태학이라는 사회과학적 이론의 환경계획에의 적용 가능성및 필요성을 밝히고자 함에 있다. 인간의 건강과 복지가 인간 생태학적 조경계획의 지침으로 제시되고 있다. 따라서 본 연구는 Philadelphia와 New York의 교외에 위치한 Upper Makefield Township 주민들의 정주유형 (Settlement Patterns), 활동유형(Activity Patterns), 이용자유형(User Patterns), 인간생태학적 소구역(Human Ecological Subregion)의 구분 및 정주기준(Siting Criteria)등을 조사 연구한 후 이들의 상호관계를 밝혀 계획가들에게 인간생태계의 이해를 도모하고자 하였다.

• The Pure and Applied Mathematics
• /
• v.12 no.3 s.29
• /
• pp.229-235
• /
• 2005

The notions of spherically concave functions defined on a subregion of the Riemann sphere P are introduced in different ways in Kim & Minda [The hyperbolic metric and spherically convex regions. J. Math. Kyoto Univ. 41 (2001), 297-314] and Kim & Sugawa [Charaterizations of hyperbolically convex regions. J. Math. Anal. Appl. 309 (2005), 37-51]. We show continuity of the concave function defined in the latter and show that the two notions of the concavity are equivalent for a function of class $C^2$. Moreover, we find more characterizations for spherically concave functions.

• Journal of the Institute of Electronics Engineers of Korea SP
• /
• v.40 no.5
• /
• pp.357-364
• /
• 2003

The main difficulty in estimating the fundamental matrix stems from the unavoidable outliers inherent in the given correspondence matches. Several researches showed that the estimation results are much dependent on selecting the corresponding points. These represent that it is important to solve the problems due to errors on the point locations and mismatches. In this paper, our analysis shows that if the evenly distributed corresponding points are selected, we can estimate a more precise fundamental matrix. This paper presents novel approaches to estimate the fundamental matrix by considering the inlier distributions. In order to select evenly distributed points, we divide the entire image into the subregions, and then examine the number of the inliers in each subregion and the area of each region. The simulation results showed that our consideration of the inlier distribution can provide a more precise estimation of the fundamental matrix.

• Journal of Digital Convergence
• /
• v.15 no.8
• /
• pp.225-234
• /
• 2017

This study was conducted with male/female teenagers to examine the interaction between their attachment to social media and their self-identity in both real space and cyberspace. Among the subjects, male teenagers tended to use social media more than female teenagers. Also, the more friends/followers they have, the more they would use the service itself. In the subordinate correlation of the subjects' self-identity in both cyberspace and real space, most areas showed positive correlation. And each subregion of the areas of real-space ego-identity and social media addiction showed positive correlation with them as well. On the other hand, in areas of social media addiction and cyberspace ego-identity, all areas showed negative correlation except the area of dominance. Through this experiment, it was proven apparent that there needs to be proper management of teenagers that are overusing and are addicted to social media, and that programs should be developed to mediate the subjects in regards to each subregion of real space and cyberspace ego-identity.

• Proceedings of the KIEE Conference
• /
• 2002.07b
• /
• pp.841-843
• /
• 2002

A novel and simple method, which can be used to automatically regenerate 3D finite element meshes, is presented in the paper. This technique based on the structural deformation analysis. It is problem independent and can be used to renew the mesh of any kind of 3D shape design system whether the geometric surface is parameterized or not. The mesh deformation degree can be adjusted by choosing suitable subregion and giving proper parameters. It is sufficient to obtain a smooth contour with proper mesh quality. Application to the optimum design of shielding plate shows the effectiveness of the proposed technique.

• Proceedings of the Korean Information Science Society Conference
• /
• 2004.10b
• /
• pp.742-744
• /
• 2004

본 논문은 복잡한 배경에서의 얼굴 검출에 있어서 다중 특징 추출 데이터로 학습한 계단식 분류기에 의한 방법을 제안한다 얼굴 검출에서 얼굴의 패턴은 상당히 다양한 영상 표현으로 나타나기 때문에 하나의 특징 추출 방법은 사람의 얼굴을 모델링 하기에는 부족하다. 따라서 여기서는 얼굴의 전체적인 지역적인 특징을 나타내는 Subregion과, 얼굴의 주파수 특성에 따라 좀 더 세밀하고 다양한 속성들을 나타내는 Haar 웨이블릿 변환을 이용하여 다중으로 특징을 추출하여 효과적인 모델링을 시도하였다. 특징을 추출한 얼굴과 비얼굴의 패턴(pattern)을 구분하기 위해서 패턴들의 통계적인 특성을 이용하여 각 추출방법에 맞게 학습된 Bayesian 분류기를 직렬로 연결하여 사용하였으며 비얼굴은 얼굴과 유사한 비얼굴(face-like nonface) 패턴들을 사용하여 모델링 하였다. 제안한 얼굴 검출 방식의 성능은 MIT-CMU 시험 영상들을 이용하여 평가하였다. 그 결과 한 가지 특징 추출을 사용하는 것 보다 두 가지 특징 추출을 병행한 계단식 구성이 더 정확한 검출 결과를 나타내었다.