• 한국문헌정보학회지
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• 제52권3호
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• pp.289-334
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• 2018

웹상에서 영어 이외의 언어들로 이루어진 정보가 빠르게 증가하고 있지만, 여전히 영어 정보가 가장 큰 비중을 차지함에 따라 공통어(lingua franca)로서의 지배적인 영향을 미치고 있다. 따라서 영어가 비모어인 이용자들이 보다 다양하고 풍부한 정보를 획득할 수 있도록 하기 위해서는 비영어권 화자의 모어 정보검색행위와 영어 정보검색행위에 대한 조사를 통해 주요 특징 및 차이점을 살펴볼 필요가 있다. 본 연구에서는 국내 한 사립대학의 대학생 24명을 대상으로 동시적 사고구술 기법을 적용한 정보검색 실험을 실시해 한글 정보검색행위 및 영어 정보검색행위와 인지과정을 조사하였다. 관찰데이터 및 사고구술데이터의 정성적 데이터를 기반으로, 검색 언어에 따른 웹 정보검색행위의 양상 차이에 대한 빈도분석을 실시하였다. 연구 결과, 한글 검색에서 능동적이고 적극적이며 독립적인 특성의 양상이, 영어 검색에서 수동적이고 소극적이며 의존적인 특성의 양상이 나타났다. 한글 검색에서는 이용자, 태스크, 시스템 등 다양한 출처에서 용어를 추출 조합한 검색어 구성, 여러 수준에서의 검색범위 조정, 검색엔진 검색결과페이지 내 탐색대상 아이템의 선택과 관련한 원활한 필터링, 다수 아이템의 탐색 및 비교, 웹 페이지의 전체 내용 브라우징 등이 주요 특징으로 확인되었다. 반면, 영어 검색에서는 주로 태스크 추출 용어 중심 검색어 구성, 제한된 검색범위 선호, 카테고리나 링크 등 아이템과 아이템 간 관련성에 의존한 탐색 대상 아이템 선택, 동일 아이템의 반복적 탐색, 웹 페이지의 일부 내용 브라우징, 그리고 사전 및 번역기와 같은 언어지원도구의 빈번한 사용 등이 두드러진 특징으로 파악되었다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2004년도 하계종합학술대회 논문집(2)
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• pp.561-564
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• 2004

The motion estimation which requires huge computation consumes large power in a video encoder. Although a number of fast-search algorithms are proposed to reduce the power consumption, the smaller the computation, the worse the performance they have. In this paper, we propose an architecture that a low energy management scheme can be applied with several fast-search algorithm. In addition. we show that ECVH, a software scheduling scheme which dynamically changes the search algorithm, the operating frequency, and the supply voltage using the remaining slack time within given power-budget, can be applied to the architecture, and show that the power consumption can be reduced.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.345-348
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• 2005

Because the current web search engine estimates the similarity of documents, using the frequency of words, many documents irrespective of the user query are provided. To solve these kinds of problems, the semantic web is appearing as a future web. It is possible to provide the service based on the semantic web through ontology which specifies the knowledge in a special domain and defines the concepts of knowledge and the relationships between concepts. In this paper to search the information of potential customers for home-delivery marketing, we model the specific domain for generating the ontology. And we research how to retrieve the information, using the ontology. Therefore, in this paper, we generate the ontology to define the domain about potential customers and develop the search robot which collects the information of customers.

• Journal of Information Processing Systems
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• 제14권2호
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• pp.448-454
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• 2018

Artificial bee colony (ABC) algorithm has attracted significant interests recently for solving the multivariate optimization problem. However, it still faces insufficiency of slow convergence speed and poor local search ability. Therefore, in this paper, a modified ABC algorithm with bees' number reallocation and new search equation is proposed to tackle this drawback. In particular, to enhance solution accuracy, more bees in the population are assigned to execute local searches around food sources. Moreover, elite vectors are adopted to guide the bees, with which the algorithm could converge to the potential global optimal position rapidly. A series of classical benchmark functions for frequency-modulated sound waves are adopted to validate the performance of the modified ABC algorithm. Experimental results are provided to show the significant performance improvement of our proposed algorithm over the traditional version.

• 천문학회보
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• 제42권1호
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• pp.37.3-37.3
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• 2017

We present a novel GPU accelerated search algorithm for broadband extended gravitational-wave emission (BEGE) with better than real-time analyis of H1-L1 LIGO S6 data. It performs matched filtering with over 8 million one-second duration chirps. Parseval's Theorem is used to predict the standard deviation ${\sigma}$ of filter output, taking advantage of near-Gaussian LIGO (H1,L1)-data in the high frequency range of 350-2000 Hz. A multiple of ${\sigma}$ serves as a threshold to filter output back to the central processing unit. This algorithm attains 80% efficiency, normalized to the Fast Fourier Transform (FFT). We apply it to a blind, all-sky search for BEGE in LIGO data, such as may be produced by long gamma-ray bursts and superluminous supernovae. We report on mysterious features, that are excluded by exact simultaneous occurrance. Our results are consistent with no events within a radius of about 20 Mpc.

• Smart Structures and Systems
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• 제19권4호
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• pp.449-461
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• 2017

One of the most recent methods of structural damage identification is using the difference between structures responses after and before damage occurrence. To do this one can formulate the damage detection problem as an inverse optimization problem where the extents of damage in each element are considered as the optimizations variables. To optimize the objective function, heuristic methods such as GA, PSO etc. are widely utilized. In this paper, inspired by animals such as bat, dolphin, oilbird, shrew etc. that use echolocation for finding food, a new and efficient method, called Echolocation Search Algorithm (ESA), is proposed to properly identify the site and extent of multiple damage cases in structural systems. Numerical results show that the proposed method can reliably determine the location and severity of multiple damage cases in structural systems.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2007년도 추계종합학술대회
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• pp.570-573
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• 2007

본 논문에서는 한글의 글자 단위 검색 기능 구현에 있어서 한글의 빈도수 정보를 이용하여 보다 효율적으로 검색할 수 있는 방안을 제시한다. 또한 본 논문에서 제시하는 알고리즘을 적용하여 데이터베이스에서 한글 글자 단위 검색이 가능하도록 검색 기능을 구현하였다.

• 동아시아식생활학회지
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• 제19권1호
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• pp.116-129
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• 2009

The study was conducted to evaluate consumer awareness of the risk elements associated with foods and their information search behavior regarding food safety. The data were collected from 504 adult consumers living in Seoul, Busan, Incheon, Daegu, Daejeon, and Gwangju through a self-administered questionnaire on August, 2006. Frequency analyses, t tests, one-way analysis of variance, and Duncan's multiple range comparison tests were conducted to analyze the responses using SPSS v. 14.0. The levels of recognition of consumers regarding each risk element were generally low. Many respondents answered that they obtained information regarding food safety from TV/radio/newspapers and family/relatives/friends/neighbors. The respondents also indicated that they had strong confidence in the information from family/relatives/friends/neighbors. Additionally, most respondents required information regarding heavy metal contamination, endoctrine disruptors, and avian influenza.

• 제어로봇시스템학회논문지
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• 제14권6호
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• pp.603-607
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• 2008

This paper proposes a fast acquisition method using INS velocity and multiple correlators for high speed vehicles. In order to reduce acquisition time in GPS receiver, the method utilizes inertial velocity information and multiple correlators. Search range of the Doppler frequency is reduced by using INS velocity and the number of cells at one search can be increased by using multiple correlators. By using both multiple correlators and the INS velocity in the acquisition, search space can be greatly reduced. Experimental results show that the method gives faster signal acquisition performance than the conventional method.

• 가족자원경영과 정책
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• 제6권1호
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• pp.149-165
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• 2002

This study is to understand consumer's information search activity and satisfaction. When they buy the elderly related goods through internet market and to get some ideas for silver industry on internet shopping. The 382 subjects by online banner formatted Questionnaires were analyzed by frequency, percentage, standard deviation, Person's relation and regression analysis by SPSS PC program. The major findings are summarized as follows. (1) The most respondents were young and well-educated. In terms of psychological variables, the degree of the consumer's perception for internet usefulness and using capability were relatively high. (2) Information search amount of the group who have experienced purchasing elderly related goods through internet shopping and had low perception of internet risk is higher than other group. (3) The variables influenced mostly on consumer satisfaction were the age, the sex, the purchasing experience from Internet shopping, the Internet using capacity and the perception of internee usefulness as well as of the perception of internet risk.