• Journal of the Korean Geographical Society
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• v.43 no.4
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• pp.526-543
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• 2008

Based on the social network analysis(SNA), this study examines the structural and spatial characteristics of the actor networks of the manufacturing industries for the elderly. In the field of economic geography, former researches on network have mainly focused on the network governance. However, this study focused on the social network analysis. Centrality indexes are used to analyze the topological structure of actor networks of firms and organizations. In order to investigate the spatial structure of actor networks, not only the regional distribution of actors but also the correlation between centrality index and distance are analyzed. Network matrixes among actors are transformed to network matrixes among regions using block modeling method to reveal the spatial characteristics of the actor networks. In spite of the importance of the Capital Region, networks in the non-Capital Region like Chungnam and Pusan were showed high network density. This suggested that some kinds of policy project operating in the non-Capital Region had the influence on this network in the initial stage of industry.

• Journal of Digital Convergence
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• v.10 no.11
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• pp.165-174
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• 2012

This study analyzes the effects of group characteristics of smart work users on intention for smart work activation(i.e., time flexibility, space flexibility, resource flexibility and ICT infrastructure). Also, this study analyzes the effects of different types of smart work depending on occupational groups, firm size and gender in local manufacturing companies. The results show that ICT infrastructure had the most significance in the early stage of smart work. On the contrary to the previous studies which focused more on time flexibility and space flexibility, this study exemplified that the resource flexibility demonstrated relatively higher significance than time flexibility and space flexibility. The results suggest the possibility of successful smart work by recognizing the change in organizational culture, specifically in face to face evaluation and vertical organizational culture to performance-based and horizontal organizational culture.

• Korean Journal of Heritage: History & Science
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• v.45 no.4
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• pp.160-173
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• 2012

일본 문화청 소속의 정부조직이었던 나라국립문화재연구소가 국가조직의 행정개혁에 따라 현재의 독립행정법인 나라문화재연구소로 변혁하면서 나타나고 있는 여러가지 상황에 대해서 살펴보고자 한다. 나분켄은 동아시아에서도 잘 알려진 국보 호류지금당벽화의 소실이 문화재 분야의 큰 문제로 부각되면서 종합적이고 학술적인 문화재의 연구 보호 종합기관의 설립 필요성에 의해 만들어진 기관이었다. 연구분야에서 보면 초기에는 역사, 건축, 미술공예, 정원, 유적 등 다양한 분야에서 출발했으나 나라지역의 헤이조큐 유적보존 문제가 주요 이슈로 떠오르면서 매장문화재의 발굴 중심으로 그 역할이 강화되는 변화를 겪에 되었다. 그러나 선사고고학이 아닌 역사고고학이 중심이었기 때문에 건축사나 정원사, 보존과학 등 서로 다른 학문이 융합하여 연구할 수 있는 강점이 강화되어 설립목적은 견지하면서 변모하였다. 독립행정법인으로의 변화는 1999년의 제145차 통상국회에서 "독립행정법인통칙법"이 성립되면서 부터였다. 독립행정법인의 취지는 독립 운영하는 쪽이 효율적인 부분을 분리시켜 법인격을 가진 기관으로 바꾸면서 운영교부금을 주무관청으로부터 받아 사용처를 독자적 재량에 맡기면서 이윤을 올릴 수도 있게 한 것이다. 또한 조직과 인사의 자율성을 보장받는 장점도 있으나 평가시스템이 되입되는 정신적 부담도 공존하게 된다. 즉, 민간 방법의 도입에 따라 국가의 부담을 경감하고자하는 의미가 내재되어있다. 나분켄의 독립행정법인화는 동시에 도쿄문화재연구소의 통합을 수반하게 되었다. 도분켄은 원래 미술공예품을 중심으로한 동산문화재 연구와 보존과학부분에 충실한 조직이었으므로 부동산문화재 중심의 나분켄과 통합에 우려의 목소리가 있었다. 그러나 불행중 다행으로 다카마쓰즈카 고분벽화의 열화문제와 키토라 고분 벽화의 보존문제로 인하여 전무후무한 협업연구가 진행되고 양 연구소의 역량을 결집할 수 있는 계기가 되었다. 결론적으로 말하자면, 독립행정법인화는 매년 예산을 중기계획이나 연도계획과 정합성을 유지하면서 독자적인 판단을 통해 편성하는 등 극히 유연한 대응이 가능하다는 장점을 가지고 있는 반면, 문화재 보존을 위한 연구라는 공공적인 목적을 가진 조직이 정부의 의도대로 독자적으로 이윤을 올리는 사업을 확립하여 국가의 부담을 경감하는 방향으로 나아갈 수 있는가라는 부분에서는 의심할 여지가 남아 있다.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.18 no.1
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• pp.189-201
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• 2023

The purpose of this study is to analyze the ICT startup investment status in Korea and examine the relationship between startups and venture capitals by network analysis. In this study, the Gephi was used to analyze network attribute values and to compare the results of each centrality. As a result of the analysis, IMM investment, Altos Ventures, and Smilegate Investment were located in the top ranks in each centrality. It can present that venture capital companies ranked high in betweenness centrality, closeness centrality, eigenvector centrality have continuously invested in growing startups into unicorns from 2014 to 2019. These results can be used as data for startups want to receive funding from venture capital in the future in consider to the relation of startup and invest industry. This study provides information to develop strategies for the sustainable venture investment environment in Korea of stakeholders such as startups, venture capital, consumers, and the government; as a result, it can help various follow-up studies in the field of startups and venture capital.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.37 no.5
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• pp.54-63
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• 2000

We present a multi-resolution block matching algorithm (BMA) for fast motion estimation At the coarsest level, a motion vector (MV) having minimum matching error is chosen via a full search, and a MV with minimum matching error is concurrently found among the MVs of the spatially adjacent blocks Here, to examine the spatial MVs accurately, we propose an efficient method for searching full resolution MV s without MV quantization even at the coarsest level The chosen two MV s are used as the initial search centers at the middle level At the middle level, the local search is performed within much smaller search area around each search center If the method used at the coarsest level is adopted here, the local searches can be done at integer-pel accuracy A MV having minimum matching error is selected within the local search areas, and then the final level search is performed around this initial search center Since the local searches are performed at integer-pel accuracy at the middle level, the local search at the finest level does not take an effect on the overall performance So we can skip the final level search without performance degradation, thereby the search speed increases Simulation results show that in comparison with full search BMA, the proposed BMA without the final level search achieves a speed-up factor over 200 with minor PSNR degradation of 02dB at most, under a normal MPEG2 coding environment Furthermore, our scheme IS also suitable for hardware implementation due to regular data-flow.

• Journal of the Korean Society for Nondestructive Testing
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• v.25 no.4
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• pp.247-253
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• 2005

This study investigated the effects on foot and ankle roll-over characteristics according to different heel heights during walking. Fifteen female volunteers who have neither musculoskeletal nor foot problems were participated in gait analyses, wearing four different pairs of shoes in different heel heights. To obtain roll-over shape of foot/ankle complex, we used trajectories of knee and ankle joints as well as the renter of pressure between initial contact and opposite initial contact. Results revealed that the entire roll-over shape moved distally as the heel height increased but roll-over characteristics showed uniformly with different heel heights. In addition, we found that nondisablea persons automatically adapted to their foot/ankle complex to varying heel heights within 6cm, by moving the origin of roll-over shape distally to maintain roll-over characteristics. However, since the balance of the gait only by the ankle joint could not be achieved beyond the heel height of 6cm, compensations at the knee and the hip joints occurred simultaneously. Roll-over characteristics in human walking would provide simpler and wider understanding of human walking, and furthermore could be applied to the wide understanding of prosthetics and orthotics of the lower extremity as well as orthopaedic shoes.

• The Journal of the Korea Contents Association
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• v.13 no.12
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• pp.149-167
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• 2013

This study focuses how storytelling in advertising has introduced and determinated mobile telecommunication technology as a digital technology in the process of its rapid acceptance into our society. The objective of the study is to confirm the role of advertising in introducing technology into a society and the relation between advertising and technology by chasing the digital discourse produced by advertising while digital technology permeates through our society. This study uses content analysis for basic research and discourse analysis for exploring the change of digital discourse in the corporate ads of mobile telecommunication companies since 15 years. As a result, 1) 'digital' and 'analogue' discourses were found to be competing and contesting with each other across the years. Digital discourse mainly connected to a new mode of thinking and lifestyle appeared predominant in the early period, but eventually gave way to its alternative, analogue dialogue. The analogue discourse was brought with such values as humanity, slowness and happiness, which has been by and large undermined by the new, fancy digital technologies and their world, 2) whereas some mixed forms of these two discourses were also found. 3) In the meantime, digital-based mobile communication technologies were identified with people who think outside of box and have an innovative attitude toward their life in the ads. Through this signification process, the ads contribute to permeation of mobile communication technology into our daily life.

• Journal of Internet Computing and Services
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• v.8 no.3
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• pp.19-32
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• 2007

This paper present a new face recognition method based on LVQ neural net to construct a real time face recognition system. The previous researches which used PCA, LDA combined neural net usually need much time in training neural net. The supervised LVQ neural net needs much less time in training and can maximize the separability between the classes. In this paper, the proposed method transforms the input face image by PCA and LDA sequentially into low-dimension feature vectors and recognizes the face through LVQ neural net. In order to make the system robust to external light variation, light compensation is performed on the detected face by max-min normalization method as preprocessing. PCA and LDA transformations are applied to the normalized face image to produce low-level feature vectors of the image. In order to determine the initial centers of LVQ and speed up the convergency of the LVQ neural net, the K-Means clustering algorithm is adopted. Subsequently, the class representative vectors can be produced by LVQ2 training using initial center vectors. The face recognition is achieved by using the euclidean distance measure between the center vector of classes and the feature vector of input image. From the experiments, we can prove that the proposed method is more effective in the recognition ratio for the cases of still images from ORL database and sequential images rather than using conventional PCA of a hybrid method with PCA and LDA.

• Journal of the Korean Association of Geographic Information Studies
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• v.1 no.1
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• pp.86-98
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• 1998

In order to provide an information as input data of possible storm surges in advance, the typhoon center and maximum wind position analysis scheme must be developed for the initialization of pressure and wind field.This study proposes a semi-automatical and objective analysis method and a procedure on a real time basis using the satellite TBB data of the GMS IR1, NOAA satellite CH4 and CH5, and shows the result of an experimental analysis. It includes a simple method of determining the parameters of the typhoon using minimum top temperature of the convective cloud near the inner eyewall. The method analyzing the isotropic cross sectional variation of TBB gradient from center to environment was developed to determine the center of Rmax of typhoon. This position of intense eyewall from typhoon center can be considered as the position of maximum wind. The results of estimation of typhoon center show very good agreement to the results of synoptic analysis. It is found that the Rmax is approximately 50-200km. From the comparison of the GMS and NOAA IR TBB data, it is found that the Rmax from NOAA data tends to be longer than those from GMS data.

• Journal of the Economic Geographical Society of Korea
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• v.11 no.2
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• pp.251-271
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• 2008

Maquiladora industries have grown due to the decrease in labor costs caused by Mexico's economic crisis and the increase in possibility of Mexico's advance into North American markets caused by the NAFTA that come into effect since the 1980s and 1990s. Early Marquiladora industries have started to be located in the Northern borders of Mexico using young-female labor forces centered on the textile and electronic part industries. However, after the 1980s, the port soared, and the regional range of Maquiladora industries has also enlarged to 25 states. The most important regions of Maquiladora industries in Mexico are Chihuahua and Baja California and their cities are Ciudad Juares and Tijuana. Maquiladora industries had grown in terms of the cost of product and the employment until the end of the 1990s. However, Maquiladora industries have decreased in the cost of product and the employment since the 2000s. The regional range of Maquiladora industries has enlarged into the entire of Mexico, but most of Maquilador industries is still located in Northern border regions centered on six states. The textile industry is a representative one of Maquiladora industries and the early Maquilador industries have been focused on the textile industry. Thus, the textile industry in Maquiladora shows the same pattern as any other industries in Mexico. However, machinery and electronic part industries have been concentrated on the Northern border states and existing manufacturing zones. In terms of the change in employment by industry, machinery and electronic part industries occupied most high employment proportion and the textile industry sector was the next. The distinguished point is that service industries are growing.