• 한국정보시스템학회지:정보시스템연구
• /
• 제29권3호
• /
• pp.237-251
• /
• 2020

Purpose The research was studied the hierarchical Hangul emotion index by organizing all the emotions which SNS users are thinking. As a preliminary study by the researcher, the English-based Plutchick (1980)'s emotional standard was reinterpreted in Korean, and a hashtag with implicit meaning on SNS was studied. To build a multidimensional emotion dictionary and classify three-dimensional emotions, an emotion seed was selected for the composition of seven emotion sets, and an emotion word dictionary was constructed by collecting SNS hashtags derived from each emotion seed. We also want to explore the priority of each Hangul emotion index. Design/methodology/approach In the process of transforming the matrix through the vector process of words constituting the sentence, weights were extracted using TF-IDF (Term Frequency Inverse Document Frequency), and the dimension reduction technique of the matrix in the emotion set was NMF (Nonnegative Matrix Factorization) algorithm. The emotional dimension was solved by using the characteristic value of the emotional word. The cosine distance algorithm was used to measure the distance between vectors by measuring the similarity of emotion words in the emotion set. Findings Customer needs analysis is a force to read changes in emotions, and Korean emotion word research is the customer's needs. In addition, the ranking of the emotion words within the emotion set will be a special criterion for reading the depth of the emotion. The sentiment index study of this research believes that by providing companies with effective information for emotional marketing, new business opportunities will be expanded and valued. In addition, if the emotion dictionary is eventually connected to the emotional DNA of the product, it will be possible to define the "emotional DNA", which is a set of emotions that the product should have.

• 한국치위생학회지
• /
• 제16권6호
• /
• pp.849-861
• /
• 2016

Objectives: The purpose of the study was to investigate the relationships among snack habits, oral health practice, and oral health status in preschool children. Methods: The subjects were 209 preschool children and their mothers in Jeonbuk from March 24 to May 30, 2014. The study instruments comprised snack habits, oral health practice, and oral health status. Data were analyzed for independent t-test, one way ANOVA and hierarchical multiple regression using SPSS Win 21.0 version. Results: Higher dft index was shown in the older age (p=0.033), lower mother's education (p<0.001), lower mother's daily toothbrushing (p<0.001), check-up after tooth-brushing (p<0.001), tooth-brushing practice before sleeping (p<0.001), tooth-brushing practice after snack (p<0.001), regular dental check-up (p<0.001), fluoride and sealant for prevention caries (p<0.001), limitation of sugar snack intake (p<0.007), periodic replacement toothbrush (p=0.022). The cause of higher dft index included soda (p<0.001), yogurt (p<0.001), snack (p=0.002), bread and cake (p=0.002) and caramel and candy (p<0.001). Fruit (p<0.001), vegetable (p<0.001) and milk (p=0.004) decreased dft index. Factors affecting oral health status were tooth-brushing practice before sleeping, tooth-brushing practice after snack, regular dental check-up, fluoride and sealant for prevention caries, and intake of soda, yogurt, caramel, candy, and fruit. The explanation power of the final model was 67.6%. Conclusions: It is necessary to develop the oral health education program for the preschool children and mothers to enhance the best oral health condition.

• 한국문헌정보학회지
• /
• 제48권4호
• /
• pp.297-322
• /
• 2014

본 연구의 목적은 KCI의 인문학, 사회과학, 예술체육 분야 저자키워드를 대상으로 의미적, 형태적 분석을 통해 기존에 연구된 개념범주 텍사노미의 적합성을 확인하고 실용적인 개선 방안을 제시하는 것이다. 연구를 통해 '실체, 추상, 일반/공통, 개체'의 네 개 최상위수준의 개념범주를 보다 구체적이고 핵심 개념이 반영된 일곱 개의 범주 '개체, 활동/기능, 특성, 이론/방법, 형식/틀, 일반/공통, 인스턴스'로 변경하였다. 중위범주와 하위범주의 경우 신설, 세분화, 통합, 삭제, 이동 등의 방법으로 개념범주의 계층 구조를 단순화시키고 범주 간 용어분포의 불균형을 개선하였다. 구조적학술용어사전(STNet)을 테스트베드로 삼아 수정된 개념범주 텍사노미를 적용한 결과 용어의 분포가 균형적으로 이루어지고, 용어의 속성 표현이 상세화되는 효과를 보이는 것으로 나타났다.

• 대한공간정보학회지
• /
• 제19권3호
• /
• pp.13-21
• /
• 2011

이동성을 지원하는 모바일 환경에서 위치정보의 활용에 대한 사용자 요구가 증가되고 있으며, 시간 흐름에 따라 변화가 크게 증가되는 차량 위치와 관련된 교통 정보를 효과적으로 유지 관리하기 위한 이동체 데이터베이스 시스템의 활용이 지속적으로 제기되고 있다. 이에 반해 객체의 공간적 속성이 시간에 따라 연속적으로 변하는 이동체에 대해 위치기반서비스를 위한 지도 데이터베이스와 연계된 연구가 미비한 실정이다. 이에 본 연구에서는 시간의 변화에 따른 이동체의 위치와 질의 처리가 가능한 효율적인 시공간 이동체 색인 구조와 이를 지원하는 새로운 실증적 모델의 정립을 목적으로 한다. 본 연구에서 제시한 단계별 고정 그리드 인덱스를 이용한 시공간 이동체 모델은 대용량의 위치 기반 데이터의 효율적인 필터링을 통해 검색을 위한 공간 개체 수를 줄일 수 있었다. 또한 축척별 지도 표시를 위해 레벨을 조건으로 제약시켜 계층적 데이터 접근이 허용도록 효율적으로 구성되었음을 확인할 수 있었다.

• 대한통합의학회지
• /
• 제11권4호
• /
• pp.199-211
• /
• 2023

Purpose : Rapid population aging in South Korea is emerging as serious social problems, and interest in the health-related quality of life of the elderly is also increasing. Therefore, this study attempted to provide basic data to develop measures to improve the health-related quality of life of the elderly by identifying the impact of the elderly's dietary lifestyle on the health-related quality of life. Methods : Utilizing raw data from the Korea national health and nutrition examination survey spanning from 2011 to 2020, this study focused on individuals aged 65 and above. After excluding cases with missing data, 12,731 individuals were included in the final analysis. Various statistical methods including frequency analysis, t-tests, ANOVA, Scheffé test and hierarchical regression analysis were performed using SPSS 25.0 for windows. The statistical significance level (α) was set at .05. Results : The main results of this study were as follows. Firstly, dietary lifestyle exhibited variations depending on gender, age, education level, individual income, basic livelihood type, household type, self-rated health status, and chewing difficulty (p<.001). Secondly, there were disparities in health-related quality of life (as measured by the EQ-5D index) based on gender, age, education level, residence, individual income, basic livelihood security, self-rated health status, and chewing difficulty (p<.001). Thirdly, the EQ-5D index showed that elderly individuals' dietary lifestyle adversely impacted their health-related quality of life (F=353.74, p<.001). Conclusion : Therefore, it is necessary to prepare policies to improve the health-related quality of life by maintaining a proper diet for the elderly, and customized support and management is required taking into account the elderly's gender, age, education level, individual income, basic livelihood security, household type, self-rated health status, chewing difficulty etc.

• 한국데이타베이스학회:학술대회논문집
• /
• 한국데이타베이스학회 1997년도 International Conference MULTIMEDIA DATABASES on INTERNET
• /
• pp.472-482
• /
• 1997

Multi-dimensional data play a crucial role in various fields, as like computer graphics, geographical information system, and multimedia applications. Indexing method fur multi-dimensional data Is a very Important factor in overall system performance. What is proposed in this paper is a new dynamic access method for spatial objects called HL-CIF(Hierarchically Layered Caltech Intermediate Form) tree which requires small amount of storage space and facilitates efficient query processing. HL-CIF tree is a combination of hierarchical management of spatial objects and CIF tree in which spatial objects and sub-regions are associated with representative points. HL-CIF tree adopts "centroid" of spatial objects as the representative point. By reflecting objects′sizes and positions in its structure, HL-CIF tree guarantees the high spatial locality of objects grouped in a sub-region rendering query processing more efficient.

• 한국건설관리학회:학술대회논문집
• /
• 한국건설관리학회 2003년도 학술대회지
• /
• pp.88-95
• /
• 2003

A firm's business composition and the sales volume of each business segment are subject to change depending, to a considerable extent, on the firm's business strategy. These changes were weighted and represented as a single index, referred to by scholars in strategic management and industrial organization research fields as 'firm entropy' then its impact on firms' profitability was assessed over twelve years. The performance differences between contractor and non-contractor firms, as well as focused and diversified firms, were compared through a Longitudinal Data Analysis Technique within a Hierarchical Linear Modeling framework. Hypothesis was formulated based on firm diversification theories and previous research findings. The hypothesis was tested according to the modeling outcomes, and implications are presented. The research findings indicate that the level of firms' long-term profitability supports the argument that the construction industry is highly competitive and mature.

• 아동학회지
• /
• 제29권3호
• /
• pp.55-72
• /
• 2008

This study investigated how mother's thinking styles are represented and researched relationships between their thinking styles, their stress coping styles, and child-rearing stress. Subjects were 254 mothers of children attending child care centers and kindergartens. Instruments were the Thinking Styles Questionnaire Short Version (Sternberg & Wagner, 1991), Parenting Stress Index/Short Form (Abidin, 1990), and the Way of Coping Checklist (Lazarus & Folkman, 1984) Data were analyzed by MANOVA, Pearson's correlation, and regression. Results showed more educated mothers had legislative and internal thinking styles, and mothers employed outside the home had hierarchical, internal, and liberal thinking styles. Varieties of maternal thinking styles were related to parental distress, to parent-child dysfunctional interaction and to child's difficult temperament.

• 한국HCI학회:학술대회논문집
• /
• 한국HCI학회 2007년도 학술대회 1부
• /
• pp.750-754
• /
• 2007

본 논문은 실내의 로비나 복도에 설치된 방범 카메라로부터 얻어진 일련의 영상으로부터 '걷기', '뛰기', '앉기', '일어서기', '넘어짐'의 비교적 짧은 시간에 일어나는 인간 행동들을 실시간으로 인식하는 시스템의 구현에 관해 다룬다. 먼저 입력으로 받은 영상을 계층적 색인 구조를 갖는 다중 가우시안 기반의 배경 모델을 이용하여 윤곽을 추출하고 객체를 인식하여 시간차에 의한 가중치로 누적하여 시간 템플릿을 만든다. 만들어진 시간 템플릿으로부터 특징을 추출하여 신경망 모델에 적용하여 5가지 인간행동을 구분한다. 구현된 시스템으로 인간행동 인식 실험을 수행하였는데, 실험 참가자들의 행동 방식이 약간씩 달랐음에도 불구하고 높은 인식률을 보여주었다.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 22-24 Oct. 1991
• /
• pp.238-242
• /
• 1991

This paper presents an approach to self-tuning PI control of dynamic plants, based on fuzzy logic application. A fuzzy logic composed of linguistic conditional statements is employed by defining the relations of input-output variables of the controller. In the synthesis of a fuzzy logic controller, one of the most difficult problem is the selection of linguistic control rules and parameters. To overcome this difficulty, self-tuning fuzzy PI controller (STFPIC) with a hierarchical structure in which the fuzzy PI controller is assigned as the lower level and the rule modification and parameter adjustment as the higher level. The rules and parameters are generated by the adjustment of membership function through performance index(PE). In this paper, the algorithm for of the controller performance is estimated by means of computer simulation.