• 한국컴퓨터정보학회논문지
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• 제22권12호
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• pp.137-143
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• 2017

In this paper, we propose optimal route searching algorithm using ANN(Artificial Neural Network) and implement route searching system. Our proposed scheme shows that the route using artificial neural network is almost same as the route using Dijkstra's algorithm but the time in our propose algorithm is shorter than that of existing Dijkstra's algorithm. Proposed route searching method using artificial neural network has better performance than exiting route searching method because it use several weight value in making different routes. Through simulation, we show that our proposed routing system improves the performance and reduces time to make route irrespective of the number of hidden layers.

• International Journal of Computer Science & Network Security
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• 제22권6호
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• pp.212-222
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• 2022

There has been a rapid increase in the use of cloud email services. As a result, email encryption has become more commonplace as concerns about cloud privacy and security grow. Nevertheless, this increase in usage is creating the challenge of how to effectively be searching and filtering the encrypted emails. They are popular technologies of solving the issue of the encrypted emails searching through searchable public key encryption. However, the problem of encrypted email filtering remains to be solved. As a new approach to finding and filtering encrypted emails in the cloud, we propose a ciphertext-based encrypted policy attribute-based encryption scheme and keyword search procedure based on hidden policy ciphertext. This feature allows the user of searching using some encrypted emails keywords in the cloud as well as allowing the emails filter-based server toward filter the content of the encrypted emails, similar to the traditional email keyword filtering service. By utilizing composite order bilinear groups, a hidden policy system has been successfully demonstrated to be secure by our dual system encryption process. Proposed system can be used with other scenarios such as searching and filtering files as an applicable method.

• 한국문헌정보학회지
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• 제41권1호
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• pp.231-242
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• 2007

웹 검색 분야에서 사용되고 있는 다양한 연구 방법들 중 로그 분석 방법은 이용자의 실제 검색 행위를 사실적으로 반영한다. 로그 분석을 통하여 대다수 이용자의 전반적인 이용 행태를 분석할 수 있으므로, 로그 분석 방법은 이용자 계층이 다양하고 이질적인 웹 검색 분야의 연구에 적합한 방법이라고 할수 있다. 이에 본 연구에서는 네이버의 트랜잭션 로그를 분석한 일련의 연구를 중심으로 로그 분석 방법론이 웽 검색 분야에 어떻게 활용되고 기여할 수 있는지를 파악하고 향후 활용 분야를 제시하고자 한다. 본 연구의 결과는 웹 검색 분야의 학문적 발전과 보다 효율적인 웹 검색 시스템 개발과 서비스 구축에 기여할 수 있을 것으로 기대된다.

• 한국도서관정보학회지
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• 제9권
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• pp.1-31
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• 1982

A library catalog is most important finding tool to a library collection. This tool should be so designed as to enable users to handle with ease and convenience. Library catalog use study is necessary in order to identify the demands made on the catalog by its actual users and to measure the adequacy with which the catalog is meeting these demands. Many major catalog use surveys were performed by means of questionnaire and interview, but these methods are so difficult and perverse that the results of catalog use studies might often be far from scientific precision. The aim of this paper is to seek the guidelines with which one might assist the catalogers in providing an effective library catalog for their patrons. In order to get the first-hand information an actual survey was undertaken on searching behavior at the catalog of Jeonbug National University Library from November 30 to December 5, 1981 and from May 17 to May 22, 1982. The results of the survey can be summarized as follows: 1. Most of the students (79.77%) use the library. 2. Most of the library patrons (74.52%) use the public catalog as the searching tool to the library collection. 3. 67.85% of the catalog users are interested in searching materials written in Korean, Japanese, and Chinese. 4. 72.86% of the catalog users are interested in searching known items at catalog. 5. In known item searching, 49.44% of the catalog users choose title entry. 6. 20.17% of the catalog users are interested subject searching at the catalog. 7. Reference card is not utilized in searching. 8. For the translated items users want double entries in both vernacular and Korean. 9. At current catalog description, author, title, call number, translator, publisher and joint author are useful entry. Edition, author's date of birth and death, illustrative, size of book and bibliographical notes are not much utilized. 10. 55.39% of the catalog user need systematic guidance on how to use the library catalog and collection.

• 한국정보시스템학회지:정보시스템연구
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• 제8권2호
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• pp.91-110
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• 1999

Recently, searching agent systems to help purchase of products between business and customer have been actively studied in Electronic Commerce(EC). However, the most of comparative searching agent systems are only provided customers with searching results by the keyword-based search, and is not support the efficient decision models to be selected products considering the customer's requirements. This paper proposes the decision agent system applied decision model as well as searching functions based on the keyword-input to be selected useful products in EC. The proposed decision agent system is consist of the user interface, provider interface, decision model. Especially, as the example of the decision model, this paper is designed and implemented the prototype of decision agent system which is normalized the searching data and value of customer's preference weight as to each attribute, and orderly provided customers with computed results. This agent system is also carried out sensitive analysis according to the reflection ratio of the each attribute.

• 인터넷정보학회논문지
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• 제5권1호
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• pp.59-66
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• 2004

대칭 영역 탐색은 대칭 정보를 이용하여 사전 정보 없이 얼굴영역을 추출 할 수 있다. 그러나 눈, 코, 입 등과 같은 얼굴의 특징 부위보다 탐색할 마스크의 크기가 커져야 함으로 이 방법은 계산 시간이 많이 걸린다. 본 논문에서는 얼굴 영상에 대하여 사전 정보 없이, 적은 계산량으로 얼굴 영역 추출이 가능하도록 대칭 영역 탐색 및 웨이블릿 변환을 이용하여 얼굴 영역의 추출과 그 특징에서의 대칭간에 따른 영상을 이용하여 원영상에서는 영역 분할을 통한 얼굴 영역 추출 방법을 제안하고 실험을 통하여 이를 확인하였다.

• 보건의료산업학회지
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• 제3권1호
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• pp.47-58
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• 2009

This study is to grasp selection factors and habits of information searching of customers of ophthalmic service and to verify the differences in them and to investigate how they affect in selecting medical institute by demographic sociological characters, selection factors by classification and habits of information searching, how many times they used and the type of medical treatment. The result of analysis of importance of selection factors of medical institute, it showed that doctors' career were evaluated high by classification and it showed in order of university hospital, hospital, clinic in facilities and equipment and in order of university hospital, clinic, hospital in distance transportation Analysis of importance of selection factors by sex distinction, it showed that doctors' career were high for both male and female and according to the result of analysis of selection factors by an age, doctors' career variable was measured high and it showed in order of facilities, equipment, distance and convenient transportation. The result of analysis by the form of medical treatment, doctors' career were measured high in all diseases. Facilities and equipment were measured high in case of a corrective operation of eyesight and distance transportation variable showed high in simple eye diseases. According to the result of analysis of habits of searching information by utility frequency, one's own experience in the past(direct visits) was the highest over all and it showed in order of introduction of other ophthalmic department in case of people who go to the institutes many times.

• 국제지역연구
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• 제16권1호
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• pp.221-239
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• 2012

최근 인터넷의 급속한 확산으로 인하여 인터넷 쇼핑은 새로운 문화형식으로 우리 생활 속에 필수적 요소로 자리를 잡고 있다. 중국 인터넷 시장은 전체적인 규모나 성장에서 급속히 발전하고 있는 매우 매력적인 시장이기 때문에 많은 세계 기업들이 활발하게 진출하고 있다. 본 연구는 인터넷으로 쇼핑의 경험이 있는 중국소비자를 대상으로 인터넷 쇼핑환경에서 소비자의 쇼핑동기가 어떤 요인으로 구성되고, 이러한 쇼핑동기의 각 구성요소들이 정보탐색의도, 만족도 및 구매의도에 어떠한 영향을 미치는지를 확인하고자 하였다. 본 연구결과와 그 시사점을 요약해보면 다음과 같다. 첫째, 중국 소비자의 인터넷 쇼핑동기는 "편의성추구", "저가격추구", "다양성추구" 및 "쾌락성추구" 4가지 차원으로 구성되었다. 둘째, 인터넷 쇼핑동기의 각 구성차원은 정보탐색의도간의 관계에서 "편의성추구", "다양성추구"와 "쾌락성추구"는 각각 정보탐색의도에 직접적이고 유의한 긍정적인 영향을 미치는 것으로 나타났다. "저가격추구"는 정보탐색의도에 직접적이고 유의한 긍정적인 영향을 미치지 않는 것으로 나타났다. 셋째, 정보탐색의도에 관한 기존 연구문헌을 고찰하고, 정보탐색의도는 만족도에 직접적이고 유의한 긍정적인 영향을 미치는 뿐만 아니라 구매의도에도 직접적이고 유의한 긍정적인 영향을 미치는 것으로 나타났다. 넷째, 만족도는 구매의도에 직접적이고 유의한 긍정적인 영향을 미치는 것으로 나타났다.

• Journal of Preventive Medicine and Public Health
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• 제34권4호
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• pp.389-398
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• 2001

Objectives : To investigate the information searching behavior of health care consumers according to sociodemographic characteristics. Methods : A questionnaire survey was conducted of 1,507 persons who were selected through a multi-stage stratified area cluster sampling of the Republic of Korea, excluding the province of Jeiu-do. Personal were conducted through a door-to-door survey between 27 July and 10 August 1999. Results : 80.5% of respondents used more than one source of information and those $40\sim59$ years of age, female, a housewife or student and those who claimed a religion demonstrated more active information searching behavior. A personal informer was used significantly more in those $20\sim39$ years old, female, and those who claimed a religion. Clerical workers, those with post-secondary education and a monthly income greater than 2,000,000 won ($1500) were more actively used a public informer. Low socioeconomic status and older persons used an experimental informer when they chose a health care institution. Conclusion : Regardless of the sociodemographic characteristics, personal and experimental informers were the most useful source of information. Because appropriate information was not easy to obtain, the health care consumer was dependent upon word-of-mouth communication(personal informer) when using health care services.

• 한국실내디자인학회논문집
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• 제23권2호
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• pp.90-98
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• 2014

This study has analyzed the meaning of observation time in the course of acquiring the information of subjects who observed the space of hall in subway stations to figure out the process of spatial information excluded and the features of intensive searching. The followings are the results from the analysis of searching process with the interpretation of the process for information acquirement through the interpretation of observation area and time. First, based on the general definition of observation time, the reason for analyzing the features of acquiring spatial information according to the subjects' observation time has been established. The feature of decreased analysis data reflected that of observation time in the process of perceiving and recognizing spatial information, which showed that the observation was focused on the enter of the space during the time spent in the process of observing the space and the spent time with considerable exclusion of bottom end (in particular, right bottom end). Second, while the subjects were observing the space of hall in subway stations, they focused on the top of the left center and the signs on the right exit the most, which was followed by the focus on the both side horizontally and the clock on the top. Third, the analysis of consecutive observation frequency enabled the comparison of the changes to the observation concentration by area. The difference of time by area produced the data with which the change to the contents of spatial searching in the process of searching space could be known. Fourth, as the observation frequency in the area of I changed [three times -> six times -> 9 times], the observation time included in the area increased, which showed the process for the change from perception to recognition of information with the concentration of attention through visual information. It makes it possible to understand that more time was spent on the information to be acquired with the exclusion of the unnecessary information around.