• 한국도서관정보학회지
• /
• 제42권4호
• /
• pp.263-280
• /
• 2011

본 연구에서는 국내 주요 검색 포털들의 전반적인 모바일 통합 검색 현황을 조사하고, 네이버와 구글의 모바일 통합 검색 컨텐츠를 분석, 평가하였다. 즉 이 연구에서는 네이버와 구글을 대상으로 검색 결과에 노출되는 문서 수, 검색 결과 문서들의 컬렉션별 분포, 작성 연도별 분포와 같은 특징을 조사하고, 문서의 적합도, 최신성, 신뢰도 등을 평가하였다. 또한 네이버의 통합웹 베스트와 통합웹, 구글의 베스트 웹문서와 웹문서의 품질을 비교하였으며, 문서의 순위와 문서의 적합도 간의 상관관계를 분석하였다. 본 연구의 결과는 향후 포털의 효과적인 모바일 통합 검색 서비스의 개발에 활용될 수 있을 것으로 기대된다.

• 한국문헌정보학회지
• /
• 제33권2호
• /
• pp.185-202
• /
• 1999

정보산업이 국가의 기간산업으로 발돋움하면서 정보산업의 핵심을 이루는 정보자원의 개발과 확보는 정보산업의 발전과 성공의 중요한 요인이 된다. 이때 공공부문에서 보유하고 있는 공공정보자원은 국가적인 정보자원의 확보를 위한 기반이 될 수 있으며 공공정보자원의 적극적인 활용은 거시적으로 정보산업의 발전과 직결될 수 있다. 본 연구에서는 이와 과하여 공공정보자원의 민간 활용 방안을 제시하였다 공공정보자원의 민간 활용 은 공공부문의 정보자원을 민간 사업자에게 제공하여 정보의 부가가치화와 상업화를 통해 최종 이용자인 국민에게 제공하는 것으로서 민간 사업자의 사업 기회 창출과 이를 통한 산업 육성, 그리고 공공${\cdot}$민간 부문간의 역할 분담을 통해 보편적 서비스를 실현할 수 있다.

• 한국멀티미디어학회논문지
• /
• 제1권1호
• /
• pp.37-44
• /
• 1998

최근 SGML을 이용한 문서정보와 구축에 관한 연구가 많이 이루어지고 있으나, 현재 운영되고 있는 전자도서관에서는 기존의 출판물 문서를 이진 문서영상으로 스캐닝하여 사용자에게 그대로 서비스하는 방식을 이용하고 있다. 이때, 주로 200dpi로 스캐닝한 문서영상에 대하 TIFF 영상포맷에서의 ITU-T T.6 압축방법을 사용하여 제공하고 있는데, 이진 문서영상의 질 저하 현상과 낮은 압축율로 인해 어려움을 겪고 있다. 이에, 본 연구에서는 문서영상 데이터베이스의 확장성 및 효용성과 서비스 질의 향상성을 고려하여, 문서영상의 스캐닝 해상도는 600dpi가 적당하며, 압축방법은 JBIG이 타당함을 제시하였다. 아울러, 사용자 장비인 모니터와 프린터를 통한 서비스의 특성을 분석하여 이진 문서영상의 해상도를 단계별로 높여 서비스하는 방안을 제시함으로써, JBIG의 단점인 과다한 복구시간 문제를 해결하였다. 대표적인 문서영상들에 대한 실험을 통해, JBIG의 높은 압축율 및 제시된 단계별 서비스 방안의 타당성을 확인하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제15권1호
• /
• pp.343-364
• /
• 2021

In the 5G era, the communication networks tend to be ultra-densified, which will improve the accuracy of indoor positioning and further improve the quality of positioning service. In this study, we propose an indoor three-dimensional (3D) dynamic reconstruction fingerprint matching algorithm (DSR-FP) in a 5G ultra-dense network. The first step of the algorithm is to construct a local fingerprint matrix having low-rank characteristics using partial fingerprint data, and then reconstruct the local matrix as a complete fingerprint library using the FPCA reconstruction algorithm. In the second step of the algorithm, a dynamic base station matching strategy is used to screen out the best quality service base stations and multiple sub-optimal service base stations. Then, the fingerprints of the other base station numbers are eliminated from the fingerprint database to simplify the fingerprint database. Finally, the 3D estimated coordinates of the point to be located are obtained through the K-nearest neighbor matching algorithm. The analysis of the simulation results demonstrates that the average relative error between the reconstructed fingerprint database by the DSR-FP algorithm and the original fingerprint database is 1.21%, indicating that the accuracy of the reconstruction fingerprint database is high, and the influence of the location error can be ignored. The positioning error of the DSR-FP algorithm is less than 0.31 m. Furthermore, at the same signal-to-noise ratio, the positioning error of the DSR-FP algorithm is lesser than that of the traditional fingerprint matching algorithm, while its positioning accuracy is higher.

• 대한한방내과학회지
• /
• 제39권3호
• /
• pp.389-404
• /
• 2018

Objective: The aim of this study was to investigate acupuncture therapy for post-stroke cognitive disorder to suggest the methods of a study about acupuncture therapy. Methods: Several academic databases were used in this study, including National Digital Science Library (NDSL), National Assembly Library of Korea, Korean Traditional Knowledge Portal, Research Information Sharing Service (RISS), Korean studies Information Service System (KISS), Korean Medical Database (KMBASE), Korea Med, Oriental Medicine Advanced Searching Integrated System (OASIS), PubMed, MEDLINE with Full Text, and China National Knowledge Infrastructure (CNKI). Keywords used were "중풍", "뇌졸중", "인지장애", "침", "acupuncture", and "cognitive disorder". Results: Ultimately, 28 papers were investigated. that were mainly published in 2012 and 2016. Of these, More than two-thirds received a score of one or less on the Jadad scale. Acupuncture points such as GV20, GV24, PC6, EX-HN1, SP6, and GV26 were most frequently used. The treatment duration was mostly 30 minutes or less, and the treatment cycle was mostly for four weeks. Dilatational wave was generally used in pulse wave form, and amplitude of electricity was increased until patients were able to endure. G6805 was generally used in electric acupuncture apparatus. According to results of acupuncture treatment, assessments such as the MMSE (Mini Mental State Examination) and the Montreal Cognitive Function Assessment Scale (MoCA) showed statistically significant improvements in 28 studies. Conclusions: Future research is needed to standardize the treatment of acupuncture, and more diversified high quality papers should be published to help clarify the therapeutic effects of acupuncture and the mechanisms of cognitive disorder post-stroke.

• Journal of Multimedia Information System
• /
• 제1권1호
• /
• pp.67-75
• /
• 2014

Nowadays as video services grow rapidly, it is important for the service providers to provide customized services. Video ranking plays a key role for the service providers to attract the subscribers. In this paper we propose a weekly video ranking mechanism based on the quantified user engagement. The traditional QoE ranking mechanism is relatively subjective and usually is accomplished by grading, while QoS is relatively objective and is accomplished by analyzing the quality metrics. The goal of this paper is to establish a ranking mechanism which combines the both advantages of QoS and QoE according to the third-party data collection platform. We use data mining method to classify and analyze the collected data. In order to apply into the actual situation, we first group the videos and then use the regression tree and the decision tree (CART) to narrow down the number of them to a reasonable scale. After that we introduce the analytic hierarchy process (AHP) model and use Elo rating system to improve the fairness of our system. Questionnaire results verify that the proposed solution not only simplifies the computation but also increases the credibility of the system.

• 한방재활의학과학회지
• /
• 제31권2호
• /
• pp.49-55
• /
• 2021

Objectives The impact of social and economic losses on society due to the occurrence of osteoporosis patients is serious. The purpose of this study is to identify the types and effects of herbal medicine for osteoporosis and osteopenia. Methods We will investigate 8 online databases (MEDLINE/PubMed, Cochrane library, EMbase, China National Knowledge Infrastructure [CNKI], J-stage, National Digital Science Library [NDSL], Research Information Sharing Service [RISS], Koreanstudies Information Service System [KISS]) without language, publication date limitation for the clinical study of herbal medicine for osteoporosis and osteopenia published between the start of the database and 2021. The frequency, duration and pattern of the any type of herbal medicine utilization will be analyzed. Results Randomized controlled trials about herbal medicine or herbal medicine extracts for osteoporosis and osteopenia should be included in the study. Cochrane risk in bias tools will be used to evaluate the methodological quality of the study. A risk ratio or mean difference with a 95% confidence interval will show the effects of herbal medicine or herbal medicine extracts for osteoporosis and osteopenia. Conclusions The results of the systematic review will reflect the current status of herbal medicine treatment for osteoporosis and osteopenia, and it can be expected to verify the validity of the effectiveness, and provide it as a basic data for the use of herbal medicine in clinical utilization.

• 한방재활의학과학회지
• /
• 제31권2호
• /
• pp.25-40
• /
• 2021

Objectives This study was conducted to analyze the effect of using acupotomy for piriformis muscle syndrome. Methods The databases used for the search were PubMed, Embase, Cochrane library, China National Knowledge Infrastructure (CNKI), Koreanstudies Information Service System (KISS), Research Information Sharing Service (RISS), Oriental Medicine Advanced Searching Integrated System (OASIS), KMbase, and National Digital Science Library (NDSL). The literature was searched using a total of 9 domestic and foreign databases. randomized controlled trial using only acupotomy as an intervention was selected. The selected studies are analyzed the risk of bias through Cochrane risk of bias, and meta-analysis was performed using Revman. Results As a result of meta-analysis of 11 selected studies, acupotomy was more effective than nerve block and acupuncture. In terms of visual analog scale and immediate analgesic effect, acupotomy did not have statistically significant results compared to other treatment methods. meta-analysis of electro-acupuncture and acupotomy showed no significant results. Conclusions When acupotomy is applied as a treatment for piriformis muscle syndrome, it is more effective than nerve block and acupuncture. but most of the studies have been judged as 'unclear' in the risk of bias assessment. Due to characteristics of treatment group and control group's intervention, It is judged that the blinding of the participant was not properly implemented. Therefore, it is considered that high-quality studies are necessary to supplement the problems in the future.

• Asia pacific journal of information systems
• /
• 제23권2호
• /
• pp.21-39
• /
• 2013

As the utilization of information technology and the turbulence of technological change increase in organizations, the adoption of IT outsourcing also grows to manage IT resource more effectively and efficiently. In this new way of IT management technique, service level management(SLM) process becomes critical to derive success from the outsourcing in the view of end users in organization. Even though much of the research on service level management or agreement have been done during last decades, the performance of the service level management process have not been evaluated in terms of final objectives of the management efforts or success from the view of end-users. This study explores the relationship between SLM maturity and IT outsourcing success from the users' point of view by a analytical case study in four client organizations under an IT outsourcing vendor, which is a member company of a major Korean conglomerate. For setting up a model for the analysis, previous researches on service level management process maturity and information systems success are reviewed. In particular, information systems success from users' point of view are reviewed based the DeLone and McLean's study, which is argued and accepted as a comprehensively tested model of information systems success currently. The model proposed in this study argues that SLM process maturity influences information systems success, which is evaluated in terms of information quality, systems quality, service quality, and net effect proposed by DeLone and McLean. SLM process maturity can be measured in planning process, implementation process and operation and evaluation process. Instruments for measuring the factors in the proposed constructs of information systems success and SL management process maturity were collected from previous researches and evaluated for securing reliability and validity, utilizing appropriate statistical methods and pilot tests before exploring the case study. Four cases from four different companies under one vendor company were utilized for the analysis. All of the cases had been contracted in SLA(Service Level Agreement) and had implemented ITIL(IT Infrastructure Library), Six Sigma and BSC(Balanced Scored Card) methods since last several years, which means that all the client organizations pursued concerted efforts to acquire quality services from IT outsourcing from the organization and users' point of view. For comparing the differences among the four organizations in IT out-sourcing sucess, T-test and non-parametric analysis have been applied on the data set collected from the organization using survey instruments. The process maturities of planning and implementation phases of SLM are found not to influence on any dimensions of information systems success from users' point of view. It was found that the SLM maturity in the phase of operations and evaluation could influence systems quality only from users' view. This result seems to be quite against the arguments in IT outsourcing practices in the fields, which emphasize usually the importance of planning and implementation processes upfront in IT outsourcing projects. According to after-the-fact observation by an expert in an organization participating in the study, their needs and motivations for outsourcing contracts had been quite familiar already to the vendors as long-term partners under a same conglomerate, so that the maturity in the phases of planning and implementation seems not to be differentiating factors for the success of IT outsourcing. This study will be the foundation for the future research in the area of IT outsourcing management and success, in particular in the service level management. And also, it could guide managers in practice in IT outsourcing management to focus on service level management process in operation and evaluation stage especially for long-term outsourcing contracts under very unique context like Korean IT outsourcing projects. This study has some limitations in generalization because the sample size is small and the context itself is confined in an unique environment. For future exploration, survey based research could be designed and implemented.

• 대한예방한의학회지
• /
• 제24권1호
• /
• pp.1-14
• /
• 2020

Objectives : The purpose of this systematic review was to investigate the efficacy and safety of Sanjoin-tang (Suanzaoren decoction, SZRD) for insomnia in menopausal syndromes. Method : We searched the following databases: PubMed, Cochrane Library, EMBASE, China National Knowledge Infrastructure (CNKI), Chinese Science and Technique Journals Database (VIP), Wanfang, Research Information Service System (RISS), OASIS, Korean studies Information Service System (KISS), and National Digital Science Library (NDSL) databases. Randomized controlled trials (RCTs) or quasi-RCTs that used SZRD for women in menopause were included. The methodological quality of each RCT was assessed using the risk of bias tool. Results : In total, nine RCTs were finally included. The included RCTs had a high risk of bias across their domains. Three RCTs examined the effects of SZRD compared with western medicine (WM) in insomnia. Three RCTs showed favorable effects of SZRD with insomnia. Infrastructure also showed that SZRD resulted in better clinical WM (RR 1.19, 95% CI 1.07 to 1.32, P=0.001, I²=0%). Four RCTs showed favorable effects of Modified SZRD with insomnia. Infrastructure also showed that Modified SZRD resulted in better clinical WM (RR 1.13, 95% CI 1.04 to 1.23, P=0.004, I²=0%). Among the 4 RCTs, three RCTs showed an equivalent effect on the total Pittsburh Sleep Quality Index (PSQI). The meta-analysis also showed that Modified SZRD had a superior effect on the total of PSQI (total of PSQI : MD -2.55, 95% CI -3.72 to -1.37, P<0.0001, I²=85%). Only 2 trials reported adverse events and none reported severe adverse events. Conclusion : SZRD appears to be safe, but there is insufficient evidence to make a definitive conclusion because only a few studies reported adverse events. Due to the poor methodological quality of the included studies and the small number of trials included, the evidence cannot be reproduced and assessed. Well-designed RCTs with a larger sample size are needed in the future.