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Performance Evaluation of SDN Controllers: RYU and POX for WBAN-based Healthcare Applications

  • Lama Alfaify;Nujud Alnajem;Haya Alanzi;Rawan Almutiri;Areej Alotaibi;Nourah Alhazri;Awatif Alqahtani
    • International Journal of Computer Science & Network Security
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    • 제23권7호
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    • pp.219-230
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    • 2023
  • Wireless Body Area Networks (WBANs) have made it easier for healthcare workers and patients to monitor patients' status continuously in real time. WBANs have complex and diverse network structures; thus, management and control can be challenging. Therefore, considering emerging Software-defined networks (SDN) with WBANs is a promising technology since SDN implements a new network management and design approach. The SDN concept is used in this study to create more adaptable and dynamic network architectures for WBANs. The study focuses on comparing the performance of two SDN controllers, POX and Ryu, using Mininet, an open-source simulation tool, to construct network topologies. The performance of the controllers is evaluated based on bandwidth, throughput, and round-trip time metrics for networks using an OpenFlow switch with sixteen nodes and a controller for each topology. The study finds that the choice of network controller can significantly impact network performance and suggests that monitoring network performance indicators is crucial for optimizing network performance. The project provides valuable insights into the performance of SDN-based WBANs using POX and Ryu controllers and highlights the importance of selecting the appropriate network controller for a given network architecture.

일부(一部) 농촌주민(農村住民)의 상병현황조사(傷病現況調査)와 조사기법(調査技法)의 비교연구(比較硏究) (A Study on the morbid status of a rural area and comparison of its study methodology)

  • 이은일;민재기;송동빈
    • 농촌의학ㆍ지역보건
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    • 제9권1호
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    • pp.39-45
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    • 1984
  • This research was done to gain the health information in one of the target areas(rural area) of the Korea University Community Health Project, and to improve and standardize the methodology of the health interview survey. There were two types of questions;one was the simple open-ended question and the other was check list in the interview survey for a total of 1,406 inhabitants. And so the result obtained from the above survey was analysed. The results as follows; 1) The morbidity rate in general was 11.2% by simple open-ended question and 32.5% by check list during recent 20 days in interview method. 2) Women had higher morbidity rate in both kinds of method. 3) The most prevalent diseases in the interview method using check list were the ones of the musculo-skeletal system and connective tissue (22.5%), and diseases of the respiratory system (19.8%) and digestive system (13.7%) were in order of frequency. 4) By the position in the family, housewives had highest morbidity rate in the interview method unrespectedly, and the reason seemed that the respondents were houseweives themselves and the morbidity rate was the one by spell not by person. But morbidity rate by the socio-economic status had no significant difference in both methods. 5) The agreement rate on simple open-ended question and check list was 72.5%, but if limiting respondents themselves only, the rate was falled to 54%. 6) The morbidities were diverse in the review of the results of previous morbidity surveies, but the morbidity rate was higher and less variable in case of using check list and getting the replies individually than using simple open-ended question and proxy respondents.

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지역사회를 위한 정보봉사에 관한 일연구-대학도서관을 중심으로

  • 김남석
    • 한국도서관정보학회지
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    • 제1권
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    • pp.17-30
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    • 1974
  • As a society rapidly advances in technology and industry, various demands for information arc increasing and becoming more specialized than every before. The college library can no longer restrict its service to the people or, the campus alone. There is no fundamental change in its place on a college campus, but it has an additional role to play: to meet the demands for information from the community outside of the campus. Thyre is no denying that there are public libraries meant to serve the comnlunity and some small spacialized libraries to support certain institutions. But it is also well known that these libraries are inadequate to satisfy the demands for information in a highly diversified and specialized soceity of today largely due to lack of facilities, funds. and personnel. Under these circdmstances, it is almost imperative that the college library open its door to the community. It was attempted in the article to point out the nccds of cooperation between the college library and the community for economic and intellectual advancement on thc campus and in the community. Various ways of making the college library available to the community werc also discussed.

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체재형 가족농원 이용자의 요구분석 및 개선방안 (Dweller's Requirements Analysis for Improving Community Garden with Log House in Rural Areas)

  • 박덕병;손은호;김경희
    • 한국지역사회생활과학회지
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    • 제20권1호
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    • pp.33-49
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    • 2009
  • Community gardens with log house in rural areas as a rural growth tool are able to promote rural-urban exchange and adapt to current market mechanisms by means of communication and promotion techniques. It is important to know that what community garden's users seek for their benefits and demand for well-established and settled down. The primary purpose of this study was to examine the needs of dwellers to live their community gardens so as to provide a better understanding of community gardens in Korea. An open-ended questionnaire survey was obtained from ten householders on community gardens in the study area. The results show that there needs to establish facilities such as small storehouse for farming appliances and barbecue area, and to set up the regulation to control a loud talking and sing until late night. We suggest that the government supports to help dwellers consider their needs to be comfortable on their gardening plots.

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참먹거리에 대한 지역사회접근 (Community Approach to the True Food)

  • 김종덕
    • 한국지역사회생활과학회지
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    • 제15권4호
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    • pp.165-175
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    • 2004
  • Food is very important for human being. It is not easy for us to enjoy good life because the situation of food is not good in Korea. The self-sufficient food rate is very low and most of food which we take was produced by industrial agriculture. Food of this kind has some problems with respect to the health of consumer, agriculture, environment and community. In order to secure the true food which is safe and environmentally sound, producers, consumers and community have to work together. Producers must engage in environmental agriculture. They must produce the true food and need to know regional consumers. Consumers must pay attention to the regional agriculture and must participate the production of true food. Local government must open farmers' markets for direct marketing between farmers and consumers. NGOs should educate and organize the producers and consumers.

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Addressing User Requirements in Open Source Software: The Role of Online Forums

  • Raza, Arif;Capretz, Luiz Fernando
    • Journal of Computing Science and Engineering
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    • 제8권1호
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    • pp.57-63
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    • 2014
  • User satisfaction has always been important in the success of software, regardless of whether it is closed and proprietary or open source software (OSS). OSS users are geographically distributed and include technical as well as novice users. However, it is generally believed that if OSS was more usable, its popularity would increase tremendously. Hence, users and their requirements need to be addressed in the priorities of an OSS environment. Online public forums are a major medium of communication for the OSS community. The research model of this work studies the relationship between user requirements in open source software and online public forums. To conduct this research, we used a dataset consisting of 100 open source software projects in different categories. The results show that online forums play a significant role in identifying user requirements and addressing their requests in open source software.

DGGE를 이용한 동굴 생태계 세균 군집 구조 분석 (Analysis of Bacterial Community Structure in Gossi Cave by Denaturing Gradient Gel Electrophoresis (DGGE))

  • 조홍범;정순오;최용근
    • 환경생물
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    • 제22권1호
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    • pp.213-219
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    • 2004
  • 동굴 내 정점별 세균 군집 구조를 분석하기 위하여 PCf amplified 16S rDNA denaturing gradient gel electrophoresis(DGGE)를 적용하였다. DGGE는 동일한 분자량을 갖는 dsDNA band라고 할지라도, 각각의 염기서열 차이에 따라 전기영동 상에서 고유한 band양상을 나타낼 수 있다. eubacteria의 16S rDNA V3region을 증폭하기 위해 GC341F와 PRUN518r을 primer로 사용하여 지하수내에 미생물 군집의 다양성과 유사성을 분석하였다. DGGE band 양상을 통해 동굴내의 세균 군집 구조는 외부 환경에 비해 상대적으로 종다양성이 낮으며 동굴내 에서 특이적으로 서식하는 종이 있음을 확인하였다. 또한 유기 영양물질의 공급이 제한되어 있는 동굴에서 구아노가 주요 유기 영양물질의 공급원으로서 큰 영향을 미치고 있는 것으로 파악되었다. DGGE 상의 일부 band의 염기서열분석 결과 Pseudomonas sp. NZ060과 Pseudomonas pseudoalcaligenes, uncultured Variovorax sp., soil bacterium NS7로 동정되었다.

커뮤니티 활성화를 위한 오픈스페이스 영역성 사례연구 - 광주광역시 아파트를 중심으로 - (A Study on the Territoriality in Open Space for Community Activation - Focused on the Case of Apartment in Gwang-ju -)

  • 이하연;문정민
    • 한국주거학회논문집
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    • 제27권6호
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    • pp.1-8
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    • 2016
  • This study is focusing on Territoriality which is supposed to be one of the most important elements to activate open spaces in apartment communities. Case analysis with onsite visit is selected as the research method of this study targeting 6 apartment complexes in Bukgu and Gwangsangu, Gwangju city which accommodate over 500 households up to 800 households, which show high occupancy ratio and which were built after 2006 to minimize the physical environment variable. The result of this study is concluded as follows. First, we need the elements which can induce various action and the use of floor surface in color, pattern, and material should be considered in the stance of pedestrian for easy recognition of Territoriality change. Second, To secure the view, we should consider to plant shrubs or to plant trees wider apart. In most cases, enclosure is secured by using trees of Vertical Boundary for safety and comfort, but overuse in some cases make residents feel fear of enclosed spaces and insecurity. Third, Various and harmonious design elements can be recommended to increase aesthetic impression, to induce positive response for design, and to be used consistently. Finally, Unique space using notable landmark or design elements should be considered.

지역사회 이동성을 측정하는 한국어판 생활공간 평가(Korean Version of the Life-Space Assessment; K-LSA)의 임상적 유용성 및 사용성 검증 연구 (Validation Study of Clinical Utility and Usability on Korean Version of the Life-Space Assessment to Assess Community Mobility)

  • 김정희;장문영
    • 대한지역사회작업치료학회지
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    • 제8권1호
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    • pp.1-10
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    • 2018
  • 목적 : 본 연구의 목적은 노인의 지역사회 이동성을 측정하는 평가도구인 한국어판 생활공간 평가(Korean Version of the Life Space Assessment; K-LSA)의 임상적 유용성 및 사용성을 검증하는 것이다. 연구방법 : 작업치료사와 물리치료사 60명을 대상으로 K-LSA의 임상적 유용성 및 사용성 검증에 관한 설문조사를 실시하였다. 설문지는 임상적 유용성에 관한 객관식 문항 및 사용성에 관한 객관식과 주관식 문항을 포함하였다. 객관식 자료 분석은 빈도 분석 및 기술 통계로 처리하였고, 사용성에 대한 주관식 문항은 항목별로 공통적인 요소를 모아 분류하여 분석하였다. 결과 : K-LSA의 임상적 유용성에 긍정적 표현인 '보통(3점)'과 '그렇다(4점)'와 '매우 그렇다'로 응답한 비율이 95~100%이었고, 문항 별 점수 분포가 3.6~4.0점으로 나타났다. 또한 K-LSA의 사용성에 대한 질문에 긍정적 표현인 '보통'과 '쉽다'와 '매우 쉽다'로만 응답한 비율은 88.3~100%이었고, 문항 별 점수 분포가 3.6~4.0점으로 나타났다. 추가적으로 사용성에 대한 개방형 질문에서 생활공간 범위 3과 4에서 기준의 모호함이 언급되었다. 결론 : K-LSA는 국내 보건의료 분야에서 지역사회 이동성을 측정하는 평가도구로 임상적으로 유용하며, 사용이 용이한 도구이다. 따라서 치료사들이 노인의 사회 참여를 증진시키고, 지역사회 이동을 위한 중재 목표를 세우고, 교육하는데 기초자료로 LSA를 활용할 수 있을 것이다.

ICNP를 적용한 한국 가족의 현상 및 특성 분석 (Analysis of Phenomena and Characteristics of Family Nursing in Korea by ICNP)

  • 김영임;김희걸;윤순녕;박진경;정혜선
    • 지역사회간호학회지
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    • 제13권4호
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    • pp.608-617
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    • 2002
  • The purpose of this study was to analyze phenomena and characteristics of family nursing in Korea based on the study by Yun et al. (1999) by ICNP. The subjects of this study were 115 reports on family nursing care in Korea National Open University. The results of this study were as follows; 1. In the phenomenon of family nursing, 'Inappropriate family coping' comprised of 17.0% and 'Inadequate care for a sick member' comprised of 16.8%. 2. It was found that 'A few close neighbors was 62.5%, 'Lack of communication between married couple' was 60.0%, 'Neglet of general child rearing' was 40.9%, 'Closed communication pattern of the head of a family' was 36.0%, and 'Inadequate distribution of each family member's role' was 27.2%. 3. 'Lack of family interaction in community' and 'Social isolation' were combined with 'Lack of family interaction in community', and 'Disturbance in family communication' and 'Lack of family intimacy' were combined with 'Disturbance in family communication'. 4. 'Dual-loading with office work and housework', 'Overload of caring one's elders because of the status as a dual-income family' and 'Lack of family support system' were added into 'Inappropriate family coping'.

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