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Fast Multi-Phase Packet Classification Architecture using Internal Buffer and Single Entry Caching (내부 버퍼와 단일 엔트리 캐슁을 이용한 다단계 패킷 분류 가속화 구조)

  • Kang, Dae-In;Park, Hyun-Tae;Kim, Hyun-Sik;Kang, Sung-Ho
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.44 no.9
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    • pp.38-45
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    • 2007
  • With the emergence of new applications, packet classification is essential for supporting advanced internet applications, such as network security and QoS provisioning. As the packet classification on multiple-fields is a difficult and time consuming problem, internet routers need to classify incoming packet quickly into flows. In this paper, we present multi-phase packet classification architecture using an internal buffer for fast packet processing. Using internal buffer between address pair searching phase and remained fields searching phases, we can hide latency from the characteristic that search times of source and destination header fields are different. Moreover we guarantee the improvement by using single entry caching. The proposed architecture is easy to apply to different needs owing to its simplicity and generality.

Consumer Satisfaction According to Consumer's Information search Elements (소비자 정보탐색 요소에 따른 소비자 만족)

  • 강미옥
    • Journal of the Korean Home Economics Association
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    • v.36 no.5
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    • pp.29-46
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    • 1998
  • This study investigates how the consumers utilize the elements of information search and how consumers are satisfied with them. For this study, drives who have bought their own cars in two years were chosen for subjects of investigation. And samples were interviewed with an organized questionaire from July 8 to July 27, 1996. 300 samples were used for the final analysis. The major results from this study are as follows. 1) In general information search, consumers get a great deal of information from a talk their friends, neighbors, or colleagues, and they obtain information from an experienced person or a professional. In using sources of information search, they made the best use of their experiences, which is the sources of internal information, and for the second, they used advertising and the explanation of a salesman. In using the contents of information search, they made the best use of information about the merits and demerits in each attribute. In using the method of information search, the mixed search 1 method was used the most, and the attribute search method was used. 2) The casual relationship between the general satisfaction for the products and the relative variable was investigated. An age, the time pressure, the information of the products had a direct and indirect influence on the general for the products. The perceived risk, the number of inquiring activity, a shop and the buying method had a direct influence on the general for the products. An indirect influence was showed in the general satisfaction for the products through the medium of inquiring activity, a shop, and buying method.

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The Effects of Subjective Knowledge on Information Search as Related to a Consumer's Life Cycle (의류제품 소비자의 생활주기에 따른 주관적 지식이 정보탐색에 미치는 영향)

  • Hwang, Jeong-In;Park, Jae-Ok
    • Journal of the Korean Home Economics Association
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    • v.48 no.9
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    • pp.41-54
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    • 2010
  • This study attempted to determine how the subjective knowledge related to a consumer's life cycle influences their information search in the decision making process. The data was collected using a total of 349 questionnaires for the final analysis of this study. SPSS 12.0 for windows was used for the data analysis and the detailed analyses included descriptive analysis, factor analysis, reliability tests, one way ANOVA, multiple regression analysis and t-tests. The results of this study showed that there are differences in the subdivisions of subjective knowledge of apparel according to the consumer's life cycle and there is a difference in the types of information searches according to the consumer's subjective knowledge, and the subdivisions of subjective knowledge of the consumers influence their information search. This study showed that although it affected the internal search, the media search, and the store search, it did not influence the personal search in the decision making process.

A Review of Clinical Studies for Chinese Medicine Treatment of Idiopathic Edema Using the CNKI Database (특발성 부종의 중의치료에 대한 임상연구 동향 - CNKI검색을 중심으로)

  • Park, Mi-so;Kim, Soo-duk;Kong, Geon-sik;Choi, Yo-sup;Bae, Ji-eun;Baek, Hye-kyung;Kim, Young-jun;Shin, Dong-guk
    • The Journal of Internal Korean Medicine
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    • v.43 no.4
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    • pp.596-605
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    • 2022
  • Objectives: This study investigated the latest clinical studies on Korean medicine treatment of idiopathic edema in the Chinese National Knowledge Infrastructure Database (CNKI). Methods: We searched the last 9 years of clinical studies discussing Oriental medicine-based treatments for idiopathic edema in the CNKI database. The search focused on the authors, publication year, type of study, purposes of study, method and duration of treatment, evaluation criteria, and results of the selected articles. Results: The search identified 7 randomized controlled trials (RCTs) and 9 others. All studies used oral herbal medicine for treatment. The most commonly used herbs were Poria Sclerotium (茯苓), Atractylodis Rhizoma Alba (白朮), and Alismatis Rhizoma (澤瀉), which are the constituent herbs of Oryeong-san (五苓散). All 16 studies confirmed the efficacy of Oriental medicine treatments. Conclusion: More varied and scientifically designed clinical studies are required to develop treatments for idiopathic edema. The results of this study could be used as basic data for further studies on idiopathic edema.

A Review of Research Trends in Traditional Korean Medicine for Nonalcoholic Fatty Liver Disease (비알코올 지방간질환에 대한 한의학 연구 동향 보고: 국내 논문을 중심으로)

  • Kim, Na-yeon;Yoon, Mi-jung;Choi, Hong-sik;Kim, Seung-mo;Kim, Sang-chan;Kim, Kyung-soon
    • The Journal of Internal Korean Medicine
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    • v.43 no.4
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    • pp.680-719
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    • 2022
  • Objectives: The aim of this study was to investigate the trends in research on non-alcoholic fatty liver disease (NAFLD) using Korean traditional medicine. Methods: This review included studies related to the treatment of NAFLD, irrespective of the year of publication. The search terms were "nonalcoholic fatty liver disease", "non-alcoholic fatty liver", "nonalcoholic hepatitis", "herb", "herbal medicine", "acupuncture", and "traditional medicine". The studies were analyzed according to the type of research. Results: After screening, 179 studies were selected from the 592 identified by the search. The types of studies were 151 in vivo or in vitro studies, 5 randomized controlled trials, 12 case reports, 2 unspecified clinical studies, 8 review articles, and 1 article that was difficult to classify. Conclusion: Analysis of the trends in Korean traditional medicine treatment by reviewing the studies on NAFLD revealed a focus on experimental studies rather than clinical studies. Therefore, multifaceted and well-designed studies are needed.

An Empirical Study on the Factors Affecting the Participation of uTrade Hub in terms of Product Characteristics and Sourcing Patterns -Focused on the uTrade Search Services- (제품특성과 구매패턴에 따른 uTradeHub 활용요인 연구)

  • Song, Sun-Yok
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.49
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    • pp.461-490
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    • 2011
  • The purpose of this study is to examine which factors are encouraging SMEs to participate in uTradeHub(focused on the uTrade search service) in terms of product characteristics and sourcing patterns. The three factors encouraging Trade e-Marketplaces are identified in this study. First, internal factors include the support of top management, mature of IT infrastructure. Second, external factors include the pressure of industry, industry competition, dependence of trading partners. Third perception factors are perceived Usefulness, perceived easy of use. The empirical analysis had the following results. First, it reveals that support of top management, mature of IT infrastructure, industry competition have significant influence upon uTrade Search Services. On the other hand, pressure of industry, dependence of trading partners, Perceived relative benefits are not significant variable of the participation in uTrade Search Services. Second, the factors affecting the participation in uTrade Search Services are differentiated in terms of product characteristics and sourcing patterns. And the support of top management, mature of IT infrastructure, Perceived relative benefits are emphasized very important factors affecting the participation of uTrade Search Services in SMEs. The industry competition is recognized as more important factor in horizontal market in which Spot sourcing just like Operating products is trading. On the other hands, the dependence of trading partners are significant factor in vertical market in which Systemic sourcing just like Manufacturing products is trading.

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A Search Efficiency Improvement Method using Internal Contiguity in Query Terms (질의 내부 단어 인접도를 이용한 검색 효율 향상 기법)

  • Yoon, Soung-Woong;Chae, Jin-Ki;Lee, Sang-Hoon
    • Journal of KIISE:Databases
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    • v.35 no.2
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    • pp.192-198
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    • 2008
  • It is difficult to get relevant information on vast Web data. Search engines summarize and store Web information and show the ranked lists based on user queries affected by relative importance and user-adaptation. But these have limitation with showing user-intended information at the top priority. User intention is presented in general within query itself. In this paper, we propose the selective rankup methodology of user-intended search results based on weighting internal contiguity in query terms. With experimental results, we can find user-intended results with 75.8% probability using this simple method only, and efficiency of rerank proposed outperforms ordinary case by $13{\sim}20%$.

An Analysis of Differences on External Reference Price-ending and Consumer Satisfaction in Menu Products (메뉴 상품의 외적 준거 가격 끝수와 소비자 만족의 차이 분석)

  • Na, Tae-Kyun;Kim, Jang-Eix
    • Culinary science and hospitality research
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    • v.13 no.2
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    • pp.123-135
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    • 2007
  • This study intended to determine how price-ending types used for menu products affected consumers' price evaluation and value perception and such behavioral intentions as purchase intention and search intention. The collected data went through statistical processing, including frequency analysis, factor analysis, T-test and ANOVA using an $SPSS/PC^+$ 12.0 statistical package. The results can be summarized as follows: First, as for differences in internal reference price by ending, internal reference price was lower if menu ending was an odd number than it was an even number, which indicates that consumers tend to consider the price of the menu products to be lower if the ending of menu products is an odd number. Second, menu price-ending was found to have significant differences on consumers' purchase intention, search intention, and value perception. But the results of two-way ANOVA showed that price ending by restaurant types had no effect on consumers' search intention and restaurant type. This study suggested a desirable external reference price-ending type for menu products as one of sales promotion strategies to menu products planners and drew up a concrete plan to determine which price-ending type is useful by consumers' personal properties.

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Development of Purchasing Information Process Agent System

  • Kwon, Suhn-Beom;Sukho Ko
    • Proceedings of the Korea Inteligent Information System Society Conference
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    • 2001.01a
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    • pp.169-175
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    • 2001
  • It is not easy for business workers to find proper information for his job, because of the following problems:(1) information exist in various information system both internal and external with diverse formats(2) he cannot estimate relevance of all the information and (3) he cannot select proper information among large volume of information. The requirements for the systems are the following things:(1) search of relevant information from various internal and external information systems(2) proving an integrated view of information for workers, and (3) information processing and decision-making are seamlessly integrated fro business workers. We proposed an agent system to fulfill the requirements. We focus on the purchasing job, and developed a prototype system. PIPA(Purchasing Information Process Agent). The PIPA performs not only information processing jobs(information search gathering, display, business form -making)but also decision-making support job (evaluation of supplier candidates, and apply of sourcing policy) for sourcing manager. The framework of the PIPA can be appled to other information processing and desision-making jobs.

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Optimal locations of point supports in laminated rectangular plates for maximum fundamental frequency

  • Wang, C.M.;Xiang, Y.;Kitipornchai, S.
    • Structural Engineering and Mechanics
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    • v.5 no.6
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    • pp.691-703
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    • 1997
  • This paper investigates the optimal locations of internal point supports in a symmetric crossply laminated rectangular plate for maximum fundamental frequency of vibration. The method used for solving this optimization problem involves the Rayleigh-Ritz method for the vibration analysis and the simplex method of Nelder and Mead for the iterative search of the optimum support locations. Being a continuum method, the Rayleigh-Ritz method allows easy handling of the changing point support locations during the optimization search. Rectangular plates of various boundary conditions, aspect ratios, composed of different numbers of layers, and with one, two and three internal point supports are analysed. The interesting results on the optimal locations of the point supports showed that (a) there are multiple solutions; (b) the locations are dependent on both the plate aspect ratios and the number of layers (c) the fundamental frequency may be raised significantly with appropriate positioning of the point supports.