Improving QoS using Cellular-IP/PRC in Hospital Wireless Network

김성홍,Kim, Sung-Hong Korea Institute of Electronic Communication Scienc 2006 한국전자통신학회 논문지 Vol.1 No.2

병원 무선망에서 호 수락 방식과 보다 적은 범위 셀 환경에서 QoS를 보장하기 위해 통합된 페이징과 루프 정보 관리 캐시를 사용하는 Cellular IP 특성을 가진 Cellular-IP/PRC 네트워크를 제안한다. 제안한 호 수락 방식은, 이동 노드의 홈 기지국 용량이 충분하고, 인접 셀 이동 노드가 홈 기지국에서 호가 수락되었다고 가정할 경우 받을 간섭의 증가량을 고려해 통화 품질이 보장될 때, 홈 기지국은 새로운 호를 이동 노드의 송신 전력 예측에 기반을 둔 호 수락 방식이다. 병원 무선망 내의 페이징과 라우터를 관리하기 위해 사용되었던 PC(Paging Cache)와 RC(Routing Cache)를 하나의 PRC(Paging Router Cache)로 통합 관리하고, 모든 노드 내에 구성하여 운용토록 하고, 이동 노드의 핸드오프 및 로밍 상태를 효율적으로 관리 할 수 있도록 이동 노드에 핸드오프 상태 머신을 추가하며, 노드에서 관련 기능을 수행하도록 연구한다. 시스템 환경에서 통화량에 영향을 주는 인자를 분석하고 각 링크 통화권 및 불균형 정도를 예측하여, 하향링크에 의해 통화권이 제한되었는지를 판단하여 호를 수락 또는 차단하는 알고리즘 이용 총 송수신 전력을 기반으로 제안한 알고리즘을 응용해서 QoS에서 가장 밀접하고 중요한 호 차단 확률과 호 탈락 확률, GoS(Grade of Service), 셀 용량의 효율을 예측 처리하여 QoS 성능 개선을 나타낸다. In this paper, we propose for improving QoS in hospital wireless network using Cellular-IP/PRC(Paging Route Cache) with Paging Cache and Route Cache in Cellular-IP. Although the Cellular-IP/PRC technology is devised for mobile internet communication, it has its vulnerability in frequent handoff environment. This handoff state machine using differentiated handoff improves quality of services in Cellular-IP/PRC. Suggested algorithm shows better performance than existing technology in wireless mobile internet communication environment. When speech quality is secured considering increment of interference to receive in case of suppose that proposed acceptance method grooves base radio station capacity of transfer node is plenty, and most of contiguity cell transfer node was accepted at groove base radio station with a blow, groove base radio station new trench lake acceptance method based on transmission of a message electric power estimate of transfer node be. Do it so that may apply composing PC(Paging Cache) and RC(Routing Cache) that was used to manage paging and router in radio Internet network in integral management and all nodes as one PRC(Paging Router Cache), and add hand off state machine in transfer node so that can manage hand off of transfer node and Roaming state efficiently, and studies so that achieve connection function at node. Analyze benevolent person who influence on telephone traffic in system environment and forecasts each link currency rank and imbalance degree, forecast most close and important lake interception probability and lake falling off probability, GoS(Grade of Service), efficiency of cell capacity in QoS because applies algorithm proposing based on algorithm use gun send-receive electric power that judge by looking downward link whether currency book was limited and accepts or intercept lake and handles and displays QoS performance improvement.

근현대건축의 모폴로지 이론과 건축설계

김성홍,Kim, Sung-Hong 한국건축역사학회 2004 건축역사연구 Vol.13 No.4

This paper investigates morphological theory as an intellectual framework for research and design. The first part of the paper will review morphological studies in the fields of urban geography, urban planning and architecture, particularly in England from the 1940s to the 1980s. While urban geographers and planners were concerned primarily with town plans, building forms and land use, architectural theoreticians were more interested in the topological relationship between urban and architectural space. The underlying premises and principles of these two approaches will be reviewed. The second part of the paper will focus on typology in Europe and North America. The reinterpretation of typology by Italian architects helped to bridge the gap between individual elements of architecture and the overall form of the city. However, typological theory became less accessible in post-war England and the United States. After 1980, the debate on typology became muted by the onset of vague notions such as functionalism, bio-technical determinism, and contextualism. This paper will propose a redefinition of morphology as a heuristic device, in contrast with the dichotomic view of urban morphology and architectural typology. Morphology will be shown to combine the geometrical and topological; the intentional and accidental; the real and abstract; and a priori and a posteriori. The last part of the paper discusses the lack of comparative theories and methods surrounding the physical form of architecture and the city by Korea commentators. Empirically rooted facility planning, non-comparative historical studies, and iconographic criticism emerged as a central preoccupation of architectural culture between the 1960s and 1980s, a time when international debate on architecture and urbanism was most intense. This paper will give consideration to the built environment as a dynamic physical entity and space as an epiphenomenon of daily urban life, such that collaboration between urban designers, architects, and landscape architects is seen as both beneficial and necessary.

부분 방전 전하와 음향 방출 펄스의 동시 측정에 의한 트리잉 파괴 진단

김성홍,박재준,김재환 ( Sung Hong Kim,Jae Jun Park,Jae Hwan Kim ) 한국전기전자재료학회 1997 전기전자재료학회논문지 Vol.10 No.3

회귀분석을 이용한 절연열화의 수명예측

김성홍,김재환,박재준,김순기,심종탁,최재관,이영상 ( Sung Hong Kim,Jae Hwan Kim,Jae Jun Park,Soon Gi Kim,Jae Kwan Choi,Jong Tak Shim,Yong Sang Lee ) 한국전기전자재료학회 1997 한국전기전자재료학회 추계학술대회논문집 Vol.1997 No.1

산업재 사장의 판매 전 서비스 성공요인에 대한 탐색적 연구

김성홍(Sung Hong, Kim),김진한(Jin Han, Kim) 한국서비스경영학회 2010 서비스경영학회지 Vol.11 No.2

온라인민원서비스품질 측정모형 연구

김성홍(Sung-Hong Kim) 한국생산관리학회 2007 韓國生産管理學會誌 Vol.18 No.3

  공공서비스가 인터넷과 같은 전자적 네트워크를 통해 제공되면서 온라인민원서비스품질은 중요한 이슈로 등장하고 있다. 온라인민원서비스품질을 체계적으로 측정하기 위해 본 연구는 온라인민원서비스품질을 평가할 수 있는 모델을 개발하였으며, 온라인민원서비스품질과 품질성과를 측정하기 위한 설문지를 개발하였다.<BR>  본 연구는 온라인민원서비스 이용경험이 있는 3,200명의 국민을 대상으로 설문조사를 수행하고, 확인적 요인분석을 통해 온라인민원서비스품질 측정항목의 신뢰도 및 타당성을 검증하였으며, 온라인민원서비스품질과 품질성과의 관계를 분석하였다.<BR>  본 연구의 주요결과는 다음과 같다. 첫째, 본원적 서비스, 부가서비스, 개인화, 적극지원성, 신뢰성, 절차적절성, 접근용이성, 이용편리성, 심미성은 온라인민원서비스의 중요한 구성요인이다. 둘째, 결과품질, 준비품질, 절차품질, 매체유형성은 온라인민원서비스품질의 중요한 구성 차원이다. 셋째, 온라인민원서비스품질 구성차원 가운데 결과품질, 절차품질, 매체유형성은 품질성과에 유의한 영향을 미치지만 준비품질은 품질성과에 유의한 영향을 미치지 않는다.   As public service has transferred through electronic network like the Internet, public e-service quality is emerging as a critical issue. To measure systematically performances of public e-service, this paper develops a model to evaluate the public e-service quality. This study employs a survey questionnaire to evaluate the public e-service quality and quality performance.<BR>  Drawing upon a sample of 3,200 citizens used to public e-service and working within the framework of confirmatory factor analysis(CFA), this study examines the structure and dimensionality, and reliability and validity of the public e-service quality instrument. The relationship among public e-service quality and quality performance is also analyzed.<BR>  The major findings of this study are as follows. First, essential service, public service, personalization, positive assistance, reliability, process appropriateness, ease of accessibility, convenience, and aesthetics are the critical construct of public e-service quality. Second, outcome quality, preparation quality, process quality, and media tangibles are the critical dimension of public e-service quality. Third, outcome quality, process quality, and media tangibles of public e-service quality affect quality performance, but preparation quality doesn’t.

초음파 전처리가 슬러지의 호기성 소화에 미치는 영향 예측

김성홍 ( Sung Hong Kim ),이동우 ( Dong Woo Lee ) 조선대학교 공학기술연구원 2012 공학기술논문지 Vol.5 No.2

In this study, an aerobic digester hybrid ultrasonication was developed for the treatment of aerobic digestion of sewage sludge. Batch aerobic digester prepared with ultrasonication apparatus that was suggested by other researchers which were used in this numerical experiment. In terms of solids reduction, ultrasonication is followed by aerobic digestion, which has no remarkable advantage because solubilized COD increased at the ultrasonification stage which is used as substrate for the synthesis of microorganisms at the aerobic digestion stage. On the other hand, effective solid reduction was expected by performing intermittent sonication in the phase of aerobic digestion.

자외선을 이용한 먹는 물 소득 방법에 관한 고찰

김성홍 ( Sung Hong Kim ) 조선대학교 공학기술연구원 2008 공학기술논문지 Vol.1 No.2

Interest in UV disinfection is growing among public water treatment facilities and wastewater treatment plant because of its effectiveness to removal of pathogen and Giardia which is resistant to traditional chemical disinfection. UV disinfection has ability to inactivate pathogenic microorganisms without forming regulated disinfection byproducts(DBPs). UV disinfection is widely operated in Europe and North America. Because of the susceptibility of Cryptosporidium to UV disinfection and the emphasis in recent regulations on controlling Cryptosporidium, the number of public water system using UV disinfection is expected to increase significantly over the next decade. Korea is no longer safe from the pathogenic microorganisms and is under pressure of using cleaner disinfection technology than traditional chlorination. In this study, UV technology and its application methods is introduced to prepare new disinfection era.

재순환 충전탑식 반응기를 이용한 효율적 탈질

김성홍(Sung Hong Kim),송승훈(Seung Hoon Song),박재연(Jae Yeon Park),유영제(Young Je Yoo) 한국생물공학회 2004 KSBB Journal Vol.19 No.2

A Study on the Evaluation of Multi-dimensional ASP Service Quality and Its Effects on User Satisfaction and Perceived Firm Performance

김성홍(Sung-Hong Kim),김진한(Jin-Han Kim),김길선(Kilsun Kim) 한국경영과학회 2008 韓國經營科學會誌 Vol.33 No.2

Quality has long been considered as an important factor in creating competitive advantage, and researches on quality have not been limited to off-line products but actively extended to e-services and information goods. However, given the nature of multi-dimensional aspect of quality, the systematic study on the quality of online service is still in its early stage. Especially, studies on the quality of ASP services have been rare in academic and professional journals despite the growth of ASP industry in its size and the rapid expansion in the range of application. In this paper, we clarified the multi-dimensional quality aspects of the ASP service using a Garvin’s framework (1984) which encompasses the service aspects of products, and developed a measurement model for ASP service quality. Then we empirically tested the effects of ASP service quality on user satisfaction and perceived firm performance using the data from 240 Korean small firms with less than 50 employees that had experienced the ASP service. Our results show that there are positive relationships among ASP service quality and personal performance, user satisfaction and perceived firm performance, and that product and service-related aspects of ASP service exert differential effects on performance measures so that the product-related aspects of the ASP service such as performance, features, reliability and conformance are considered to be more important in evaluating benefits from ASP services. Contrary to the approaches in literature where only the quality of online services is evaluated, our results emphasize the importance of differentiating product and service-related aspects of ASP service and provide a basis for more comprehensive evaluation of ASP service quality.