주택재개발사업에 있어서 공공의 역할에 대한 연구

박혁서(Park, Hyeok-Seo) 한국주거환경학회 2010 주거환경(한국주거환경학회논문집) Vol.8 No.2

This study analyzes the role of public authorities in relation to housing redevelopment projects. To do so, it carried out a comparative analysis between Korea’s public management system and Japan’s partnership system with a view to suggest the role of public and the direction in which public management system should orient itself. This study confirmed that while the role of the public in Korea’s housing redevelopment system so far has revolved around the establishment of plans and approvals, it is switching into a different form that supports housing redevelopment associations with the introduction of the public management system. However, the role of public authorities in support of housing redevelopment projects focuses on securing fairness and preventing illegality and does not assist residents to take part in the public-guided redevelopment plans or coordinate conflicting interests and opinions among the interested parties. On the other hand, the study found that the Japanese urban renewal project emphasizes the role of public authorities in assisting residents to reflect their opinions in urban renewal project and induces mutual agreement between interested parties prior to the launch of a fully-fledged project based on the partnerships. It is easy to note that the role of public sector found in such partnerships works as a propellant in the smooth adoption and implementation of urban renewal project. Based on the aforementioned comparative analysis, the study concluded that the role of public authorities is to support the private authorities to enhance its efficiency regarding housing redevelopment projects. To do so, the study suggests development of a public management system to help reinforce cooperative functions between local governments and residents so as to ensure that the local governments can accommodate residents’ ideas and opinions and play a role in mediating between different stances taken by stakeholders.

전광 광회선 분배 기술

박혁,김영화,김광준,Park, Hyuk,Kim, Young-Hwa,Kim, Kwang-Jun 한국통신학회 2002 정보와 통신 Vol.19 No.10

초고령사회의 고령임차인 주거문제와 일본의 주택세이프티넷제도에 관한 연구

박혁서(Park, Hyeok Seo) 한국주거환경학회 2020 주거환경(한국주거환경학회논문집) Vol.18 No.1

This research offers an analysis of the housing issues for Japanese aged lessees in the era of a super-aged society and the performance of the housing safety net system that was put in place to deal with such issues. This analysis is expected to have profound implications on the housing policy for the aged lessees in Korea that will need to be implemented in the era of the super-aged society that will come about by 2026. The analysis of this study resulted in the following conclusions. Firstly, the housing issue for the aged in the era of a super-aged society is greatly different from that in the aged society preceding the super-aged one. As most of the rental housing is occupied by the aged lessees, they been unwelcomed in the rental housing market. The main reasons for this include such problems as solitary death, failure to pay the rent and the debt-guarantee fee for the rent, all of which are linked to issues likely to occur in relation to the aged. Secondly, effectively dealing with the issues requires more than the efforts of a local government that is usually faced with tight financial constraints. This is where a subsidy by the central government is needed, and the central government has to offer a guideline on the housing safety net for the aged lessees and help local governments to make appropriate policy decisions in consideration of the rental housing market in a particular area. Thirdly, the lessors, as well as the lessees, should be supported to establish a housing safety net for the aged. To this end, it is important to promote public-private partnerships and private organizations such as housing support councils and a corporate body for housing support. Fourthly, the analysis highlighted the importance of a flexible housing safety net for the aged that is operated by the local government. In short, it is necessary to understand and approach the housing safety net issue in terms of a local rental housing market. Finally, it is thus crucial to set up online information systems which will help the aged to search for proper rental housing and enable them to make an application for moving in, as they find it physically challenging to move around in search of suitable accommodation.

일본의 콤팩트 도시 구축을 통한 지방도시재생에 관한 연구

박혁서(Park, Hyeok-Seo) 한국주거환경학회 2018 주거환경(한국주거환경학회논문집) Vol.16 No.2

This study analyzes urban regeneration of local cities through the establishment of compact city in Japan The population of most local cities in Japan has been decreasing due to low fertility and aging, which has caused a so-called “hallowing out” phenomenon in the central area of cities as well as urban economic recession. In addition, administrative costs per resident and maintenance costs of the infrastructure have increased due to a population decline in urban outskirt areas, where such costs used to be externalized in the past when a city was undergoing development. In order to solve the problem of declining local cities, the Special Act on Urban Regeneration was revised in 2014. The implementation of this Act institutionalized urban regeneration of local cities through the establishment of a compact city. This study undertook a comparative analysis of urban regeneration through the establishment of a centralized compact city in Aomori and the establishment of a network type multi-core compact city in Toyama. which were implemented in Japan. As a result, the following conclusions were obtained. First of all, in the case of urban regeneration in local cities through the establishment of a centralized compact city, the central area of the city is activated by attracting large-scale commercial facilities to the central area of the city. However, due to the population size in local cities and high land value of the central city area, it is difficult to attract private capital that can lead to the development of large-scale commercial facilities. Secondly, in order to develop large-scale commercial facilities in such cases, the local government often cooperate with the private sector in the form of the third sector, which can cause a large increase in the financial burden. Thirdly, it was concluded that reintegrating the population to the central area of the city is not much effective, unless the housing cost burden in the central city area and basis of the livelihood are not taken into consideration. On the other hand, the network type multi-core compact city, distributes major facilities and population in several major local areas as well as the central city area, which can take into account the present circumstances of the local city without forcefully integrating existing urban structures into one central city area. Secondly, if a traffic network is formed between the central city and major local cole area by utilizing public transportation, it will increase the floating population and vitalize central city areas as well as major multi-cores. Thirdly, it was concluded that network type multi-core compact cities can be developed faster than centralized compact cities because the former utilizes existing major multi-cores rather than integrating the existing facilities into the central city areas.

BcN 멀티캐스트 기능 구조

박혁,송종태,전경규,이순석,Park, H.,Song, J.T.,Chun, K.G.,Lee, S.S. 한국전자통신연구원 2006 전자통신동향분석 Vol.21 No.6

BcN에서의 멀티캐스트 특히 IPTV 방송서비스의 서비스 및 네트워크의 요구 사항을 살펴보고 기능 구조를 도출하였다. 방송서비스의 수익은 시청률에 민감하다. 특히 접속제어를 바탕으로 하는 BcN에서 IPTV 방송서비스를 제공한다면, 표본추출 방식의 기존 방송과 달리 시청자의 거동을 전수 조사할 수 있어 수익과 시청률의 관계는 더욱 밀착될 것이다. 품질 문제로 시청자를 잃지 않기 위해서는 전달망은 패킷의 손실을 최대한 막아야 하며, 네트워크 장애 발생시 서비스의 장애가 최소한으로 억제되도록 설계되어야 한다. 따라서 망은 OAM 기능 및 경로 보호 기능을 가져야 하며, 악의적인 사용자의 공격에 대한 대비책도 갖추어야 한다. 본 고에서 논의한 기능 구조에서는 서비스 인증 후 개별 채널 변환을 L2 스위치에서 접속제어하여 적법하지 않은 사용자의 접근을 막도록 하였으며, 코어 네트워크에서는 Multicast MPLS를 사용하여 OAM 및 경로보호를 제공할 수 있도록 하였다. 또한 채널 변환에 대한 정보를 파악함으로써, 자원의 사용 및 개별 사용자의 거동을 파악할 수 있도록 하였다.

개인용 컴퓨터와 소프트웨어를 이용한 3차원 전산화단층영상에서의 금속 수복물에 의한 선상 오류의 제거

박혁,이희철,김기덕,박창서,Park Hyok,Lee Hee-Cheol,Kim Kee-Deog,Park Chang-Seo 대한영상치의학회 2003 Imaging Science in Dentistry Vol.33 No.3

Purpose: The purpose of this study is to evaluate the effectiveness and usefulness of newly developed personal computer-based software to eliminate the linear artifacts by the metal restorations. Materials and Methods: A 3D CT image was conventionally reconstructed using ADVANTAGE WINDOWS 2.0 3D Analysis software (GE Medical System, Milwaukee, USA) and eliminated the linear artifacts manually. Next, a 3D CT image was reconstructed using V-works 4.0/sup TM/(Cybermed Inc., Seoul, Korea) and the linear artifacts eliminated manually in the axial images by a skillful operator using a personal computer. A 3D CT image was reconstructed using V-works 4.0/sup TM/(Cybermed Inc., Seoul, Korea) and the linear artifacts were removed using a simplified algorithm program to eliminate the linear artifacts automatically in the axial images using a personal computer, abbreviating the manual editing procedure. Finally, the automatically edited reconstructed 3D images were compared to the manually edited images. Results and Conclusion: We effectively eliminated the linear artifacts automatically by this algorithm, not by the manual editing procedures, in some degree. But programs based on more complicated and accurate algorithms may lead to a nearly flawless elimination of these linear artifacts automatically.

통계적 여과 기법이 적용된 센서 네트워크에서 에너지 효율적인 네트워크 관리를 위한 영역별 경로 재설정 주기 결정 기법

박혁,조대호,Park, Hyuk,Cho, Tae-Ho 한국시뮬레이션학회 2011 한국시뮬레이션학회 논문지 Vol.20 No.3

대규모 센서 네트워크를 구성하는 센서 노드는 개방된 무인 환경에서 동작한다. 악의적인 공격자는 일부 센서 노드를 탈취 하여 허위 보고서를 주입할 수 있다. 통계적 여과 기법은 이러한 허위 보고서 주입 공격에 대응하기 위한 기법으로 보고서 전달 과정 중에 허위 보고서를 검출하고 여과할 수 있는 방법을 제안하였다. 통계적 여과 기법에서는 적절한 전달 경로 설정을 통하여 허위 보고서 검출 성능 향상뿐만 아니라 에너지 효율 또한 높일 수 있다. 하지만 네트워크의 위상 변화와 노드의 에너지고갈 등의 다양한 환경 변화로 인하여 전달 경로를 재설정해야 하는 경우가 빈번히 발생한다. 빈번한 경로 재설정은 과도한 에너지 소모를 유발하므로 적절한 경로 재설정 주기를 결정하는 것은 매우 중요하다. 본 논문에서는 센서 네트워크의 제안된 에너지를 효율적으로 사용하기 위한 영역별 경로 재설정 주기 결정 기법을 제안한다. 제안 기법은 퍼지 시스템을 이용해 각 영역의 경로 재설정 주기를 동적으로 결정한다. 또한 주기가 결정된 영역에 대해 적절한 보안 수준을 결정하고 해당 영역은 이를 적용하여 경로를 재설정한다. 시뮬레이션을 통하여 제안 기법이 경로 재설정에 사용되는 에너지 소모량을 최대 50% 이상 감소시켰음을 확인하였다. A large-scale sensor network usually operates in open and unattended environments, hence individual sensor node is vulnerable to various attacks. Therefore, malicious attackers can physically capture sensor nodes and inject false reports into the network easily through compromised nodes. These false reports are forwarded to the base station. The false report injection attack causes not only false alarms, but also the depletion of the restricted energy resources in a battery powered network. The statistical en-route filtering (SEF) mechanism was proposed to detect and drop false reports en route. In SEF, the choice of routing paths largely affect the energy consumption rate and the detecting power of the false report. To sustain the secure routing path, when and how to execute the path re-selection is greatly need by reason of the frequent network topology change and the nodes's limitations. In this paper, the regional path re-selection period determination method is proposed for efficient usage of the limited energy resource. A fuzzy logic system is exploited in order to dynamically determine the path re-selection period and compose the routing path. The simulation results show that up to 50% of the energy is saved by applying the proposed method.

일본의 전통가옥지구 보존정책과 정부 간 협력에 관한 연구

박혁서(Hyeok-Seo Park) 서울연구원 2009 서울도시연구 Vol.10 No.3

일본 주택재개발사업의 재원분석 - 시가지개발사업과 주택지구개량사업을 중심으로

박혁서(Park Hyeok-Seo) 한국주거환경학회 2005 주거환경(한국주거환경학회논문집) Vol.3 No.1

  In this thesis, the urban redevelopment project and the housing improvement project in Japan are analyzed in the side of the project funds. The urban redevelopment project aims at the harmonious redevelopment of the business area and the residence zone in the urban district, and the housing improvement project aims at the redevelopment of residence zone. The urban redevelopment project is being performed by both the public grant from the government and the private capital. However, even though the project takes on a public character, most of the project is showing a tendency to center on only the redevelopment for business use of popular areas, such as railway station area, etc. Also, there is a tendency to be greatly influenced by the fluctuations of the real estate market. On the other hand, for the housing improvement project, which is performed by the public grant of the government in full, the public grant is also changing under the influence of the real estate market. And the problem due to the competition for securing budget among business proprietors is arising. In relation to the tendency, this thesis has examined closely through the analysis of the project funds that there is the mutual relation between public grant and real estate business, and that it influences the urban environment. It has concluded that reconsidering the guidance of the government as well as the efficiency of the role allotment of the private sector for the housing redevelopment project. in which the public grant is supported, is necessary.

저소득가구를 위한 주택임대료지원정책에 관한 연구

박혁서(Park, Hyeok-Seo) 한국주거환경학회 2013 주거환경(한국주거환경학회논문집) Vol.11 No.3

This study conducted a comparative analysis of the rent-support policies for low-income households in Korea and Japan. The study focused on the housing benefit system in Korea and the housing assistance system in Japan to carry out a comparative analysis. Both systems are the major rent-support systems for low-income households in Korea and Japan and have the characteristics of a public assistance system. Since 2008, Korea's residential rent market has experienced skyrocketing prices for both housing lease on a deposit basis as well as monthly rents, thereby imposing a heavy burden on low-income households in terms of housing expenses. Thus, rent-support policies have become a quintessential policy challenge in terms of ensuring basic residential supports for them. Against this backdrop, as Korea's National Basic Livelihood Security Act is set to be revised in 2014, the housing benefit system that has been offered based on this Act is subject to significant revision. The key changes include the expansion of the eligible household for the benefits and the modification of application criteria, among others. Thanks to the revision, a household that did not fall into the category of the basic households for national basic livelihood security in accordance with the National Basic Livelihood Security Act will be able to receive housing benefits. This means that the housing benefit system goes beyond the boundary of the national basic livelihood security system and is expanded further. While this expands the eligible recipients of the system, it also has a possibility of reducing the effectiveness of the support by sharing limited budgets among too many recipients. As for Japan, its housing assistance system, which is implemented as a part of the national basic livelihood security system, limits the target to the lowest income households. Instead, the Japanese government fully reflects market rents to ensure feasible and effective rent support making up for this limitation. The study presents an ideal direction for Korea's housing benefit policy through the comparative analysis between both countries'systems and policies.