• 한국멀티미디어학회논문지
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• 제22권2호
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• pp.210-224
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• 2019

Given a positive integer k as input, a spatial preference query finds the k best data objects based on the scores (e.g., qualities) of feature objects in their spatial neighborhoods. Several solutions have been proposed for spatial preference queries in Euclidean space. A few algorithms study spatial preference queries in undirected spatial networks where each edge is undirected and the distance between two points is the length of the shortest path connecting them. However, spatial preference queries have not been thoroughly investigated in directed spatial networks where each edge has a particular orientation that makes the distance between two points noncommutative. Therefore, in this study, we present a new method called ALPS+ for processing spatial preference queries in directed spatial networks. We conduct extensive experiments with different setups to demonstrate the superiority of ALPS+ over conventional solutions.

• 한국문헌정보학회지
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• 제17권
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• pp.105-159
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• 1989

The purpose of this study is (a) to identify physical and content elements of children's books that seem to interest second and fifth graders to read, and (b) to observe how the influence of those elements on children's reading interest shifts as children develop. For the purpose of this study, children's books are classified into two groups: 'books of low preference' and 'books of high preference' as determined by second graders, and fifth graders' library circulation record in the library chosen as the sample for the present study. The physical and content elements of the books belonging to these two groups are analyzed and compared. Main findings and conclusions made in this study are summarised as follows: (1) The physical elements of children's books which have significant relationship with second graders' reading preference are illustration quantity, size of types, space between lines, and size of the book. (2) The content elements of children's books which have significant relationship with second graders' reading preference are the readability level of sentences, and the sex of heroes. (3) The physical elements of children's books which have significant relationship with fifth graders' reading preference are illustration quantity, illustration styles, and size of the book. (4) The content elements of children's books which have significant relationship with fifth graders' reading preference are the readability level, the sex of heroes, subject matters, themes and the environmental settings as the background of stories. (5) Reading preference of the pupils at the second and fifth grades are influenced by the quantity of illustration. Second grade pupils prefer reading books which contain a larger quantity of illustrations, whereas 5th grade pupils prefer books which contain less quantity of illustrations. (6) The relationship between second graders' reading preference and the illustration style are rejected at the $10\%$ significance level. A strong relationship, however, appears to exist between 5th graders' reading preference and the illustration style. The 5th grade pupils prefer more realistic illustrations, while cartoons and semi-abstract drawings do not appeal to them. (7) The type size, and space between lines which have had great influence on the book preference of 2nd grade pupils influence little on the 5th grade pupils book preference. (8) Second grade pupils prefer the book of a small Size, whereas 5th grade pupils whose reading taste has developed at a primary stage prefer the book of a large size beyond a certain standard. (9) Second grade pupils prefer reading books which can be easily read, whreeas 5th grade pupils prefer reading books containing difficult sentences. (10) Second grade pupils and the 5th grade pupils both prefer books in accordance with the sex of there heroes. (11) Relationship between second graders' reading preference and the subject matters are rejected at the 10% significance level. A strong relationship, however, appears to exist between 5th graders' reading preference and the subject matter. Fifth grade pupils prefer reading books of which the themes are mystery, exploration and adventure. (12) The theme of books is not proved to relate with the book preference of the 2nd grade pupils, but it is closely related with the book preference of 5th grade pupils. Fifth grade pupils prefer reading books which contain exploratory stories. (13) Second grade pupils are not influenced by the environmental setting of the story, but 5th grade pupils prefer reading stories with the environmental setting in the air. (14) The quantity of illustrations is the element influencing most on .the book preference of the 2nd grade pupils, followed by the space between the lines, which influences least on the book preference of the 5th grade pupils. (15) The physical element influencing most on the book preference of the 2nd grade pupils is the quantity of the illustrations. The physical element which has the most strong influence on the book preference of the 5th graders is illustration styles. (16) The content elements which has much influence on the book preference of the 5th grade pupils are certain kinds of characteristics of heroes. In case of the 2nd grade pupils book preference, striking evidence of such characteristics of heroes is not traced.

• Communications for Statistical Applications and Methods
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• 제8권3호
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• pp.651-659
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• 2001

Preference map is a widely used graphical method for the preference data set which is frequently encountered in the field of marketing research. This provides joint configuration usually in two dimensional space between "products" and their "attributes". Whereas the classical preference map adopts the ordinary least squares method in deriving map, the present article suggests the weighted least squares approach providing the better graphical display and interpretation compared to the classical one. Internet search engine data in Korea are analysed for illustration.

• 기술경영경제학회:학술대회논문집
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• 기술경영경제학회 2006년도 제28회 동계학술발표회 논문집
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• pp.264-297
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• 2006

In this paper, we attempt to analyze consumer preference for the alternative-fuel vehicles based on data from a stated preference using the conjoint analysis. Five possible fuel types (gasoline, diesel, CNG, LPG, Hybrid (electricity+gasoline)) are covered in conjoint cards. To estimate and analyze consumer preference, discrete choice model is used. Specifically, Bayesian mixed logit model is used. Based on estimating results, we discuss the business strategy and policy for the alternative fuel vehicle.

• 한국경영과학회지
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• 제19권1호
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• pp.41-52
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• 1994

Imprecision of evaluation or lack of prior information about preference can be an obstacle for decision maker in representing his strict preference. Therefore, fuzziness of preference can take place, and in addition, intransitivity or incomparability of preference becomes the critical difficulty in making complete preorder of alternatives. In order to get better solution and to improve practical usufulness, MCDM should be established as a pseudo-criterion model that include fuzzy preference. In this paper, we suggest a pseudo-criterion model that can make complete preorder of alternatives by metric distance measure.

• 대한가정학회지
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• 제28권4호
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• pp.31-39
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• 1990

The purpose of this study is to search 1) Favorite color preference for clothing 2) Concept development for respective color preference concerned with sex, and 3) concept development for clothing clolr and clothing design. The results are as follows. 1. Liked-color preference for clothing color; female children liked pink, and male children liked blue. 2. Disliked-color preference for colthing female children and male children disliked black color. 3. Boyish color; White, Green, Blue, Black. 4. Girlish color; Yellow red, Pink, Red, Pruple, Yellow. 5. Concept development for clothing color and clothing design; Children aknowledged more the colthing color than the colthing design.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2003년도 가을 학술발표논문집 Vol.30 No.2 (3)
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• pp.13-15
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• 2003

SIP(Session Initiation Protocol)는 사용자간의 멀티미디어 세션을 처리하기 위한 응용 계층의 시그널링 프로토콜로서 유연성 및 확장이 용이한 장점을 가지고 있다. Caller Preference는 이러한 SIP의 기본적인 프로토콜을 확장한 형태로서 송신자가 Preference를 명시하여 서버가 처리할 응답 기능을 선택하거나 수신자의 수신 능력(Callee Capabilities)에 따라 적절한 호처리를 진행할 수 있는 서비스이다. 본 논문에서는 SIP를 기반으로 하는 VoIP(Voice over IP) 시스템을 구현함에 있어 UA(User Agent)내에 Preference를 선택적으로 명시할 수 있는 기능을 포함시키고 또한 이의 요청에 대한 수용이 가능하고 호처리를 진행할 수 있는 네트워크 서버를 구현하였다.

• 한국독성학회:학술대회논문집
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• 한국독성학회 2003년도 추계학술대회
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• pp.161-161
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• 2003

Different circling preference of mice is a reference of inter-individual differences in their endogenous neuroimmune circuits. I have investigated relationship between differential immune responses in mice, who have same age, gender, and genetic background, and circling behavior preference.(omitted)

• 대한간호학회지
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• 제29권2호
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• pp.215-224
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• 1999

The study was conducted to centum the construct of individual perception and preference for work characteristics as personal factors influencing Korean nurses' job satisfaction. The subjects of the study were 231 nurses who are currently working in intensive care units and have been for a minimum of 6 months. The study used the Staff Perception and Preference Scale(Song et al., 1997) to measure the individual's perception and preference on the technical. practice. and management components of the ideal work environment. The Korean version of the Staff Perception and Preference Scale consists of 16 items on perception and 13 on preference with each item related on a scale from 1(not at all) to 4(a great deal). Psychometric testing revealed that the preference and perception scale is internally consistent with Chronbach's alphas of .83 for perception scale arid .80 for preference scale. The subscales of the perception and preference scale also showed acceptable reliability for the early stage of the development of the instruments with Chronbach alphas of .62-.76 and .69-.83 respectively. Criterion-related validity of the scale was tested by examining correlations with individual growth need that is conceptually close to individual preference. but not to individual perception. Individual growth need was significantly related to individual preference(r＝.63, p<.05), but the correlation with the perception scale was not significant. A separate factor analysis for the each of perception and preference scales was performed with a three-factor loading solution based on a previous study. The results on the staff perception scale confirmed with varimax rotation that the items were cleanly and strongly loaded on technique. practice and management components, which together explained 50.7% of the variance. The factor analysis on the staff preference scale also yielded a three factor solution that explained 56.7% of the variance. but items on technique and management components were loaded together. This phenomena may due to the current nursing delivery system in Korea where nurses never experience either shared governance nor case management, and as a results they may not be able to consider management roles as their potential extended roles. Therefore, more efforts should be given to enhance nurses' autonomy and decision making in the technique, practice and management components of their work environment. Meanwhile, there is a need for continuously confirming and developing tools for individual perception and preferences to effectively enhance job satisfaction among Korean nurses through innovative work environments.

• 한국지구과학회지
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• 제31권2호
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• pp.172-184
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• 2010

본 연구는 과학영재교육원의 지구과학영재들을 대상으로 좌/우뇌 활용 선호도에 따른 문제해결의 접근 방식에 관한 유형을 알아보기 위한 것이다. 지구과학 영재 16명을 대상으로 뇌활용 선호도를 알아보기 위하여 R/LCT, BPI를 실시하였고, 문제해결방식을 알아보기 위하여 S-CPST를 실시하였다. R/LCT에서 좌뇌 성향의 학생은 8명, 우뇌 성향은 7명, 중간 점수를 보인 학생은 1명이었다. BPI에서는 좌뇌 성향의 학생이 8명, 우뇌 성향은 8명이었다. S-CPST 에서 좌뇌 성향의 학생들은 먼저 구성 요소에 흥미를 갖고 그 특징을 탐색했다. 또, 숫자나 기호 등을 사용해 논리적이고 객관적으로 문제를 해결하는 반면 자신의 아이디어를 그림으로 표현하는 것을 어려워했다. 우뇌 성향의 학생들은 3단계문제해결방식을 나타냈다. 먼저 전체적인 형태에 관심을 갖고, 둘째, 각각의 구성요소 분석하고, 셋째, 이들을 종합하여 다시 전체로 조직하였다. 또, 직관적 패턴을 보고 문제의 해결 방법을 여러 가지로 제시하며 그림을 사용하여 구체화시켰다. 결과적으로 지구과학 영재들은 좌/우뇌 성향에 따라 서로 다른 방식으로 문제를 해결하였다. 따라서 보다 효과적인 지구과학 영재교육을 위하여 영재들의 좌/우뇌 성향을 고려한 교수학습방법이 요구된다.