• 한국인터넷방송통신학회논문지
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• 제8권4호
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• pp.119-125
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• 2008

스마트 기기의 컨버전스를 위한 기존의 방법은 미들웨어를 사용하여 소프트웨어를 통합하는 것이다. 미들웨어를 사용하면 쉽고 빠르게 통합이 가능한 장점이 있다. 하지만 미들웨어는 기본적으로 소프트웨어가 크기 때문에 수행 속도가 느리다. 이러한 단점을 극복하기 위해 본 논문에서는 컨버전스를 위한 모델링 도구를 제안한다. 제안하는 모델링 도구는 모델 단계에서 컨버전스를 수행하고 자동코드를 생성하여 미들웨어 없이 소프트웨어의 컨버전스가 가능 하게 한다. 적용사례로서 u-Home 환경의 텔레비전과 도어락 시스템의 컨버전스를 보여주었다. 미들웨어를 사용하지 않아 저렴한 비용으로 스마트 기기의 컨버전스를 수행하였고 사용자가 원하는 컨버전스 제품을 빠르게 개발할 수 있었다.

• 공학교육연구
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• 제20권5호
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• pp.43-49
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• 2017

This paper deals with inter-relationship change of women's university students on the process of SW development project using social collaboration tool. Inter-relationship is one of the basic vocational competency in NCS(National Competency Standards) of Korea. We redesigned the curriculum of "Software Engineering" subject for this study and composed the project teams of students to develop software. The details of inter-relationship are satisfaction, communication, faith, friendliness, sensitivity, openness and consideration. From the result of this study, faith, openness and consideration have positive effect but satisfaction, communication, friendliness and sensitivity have no meaningful effect. The surveys were conducted in the beginning of semester and the same surveys were conducted again in the end of semester. The results were verified by paired t-test with SPSS 18.0. It is significant that the using of social collaboration tool for team project has positive effect on inter-relationship change, especially faith of women's university students. This study has some limitations for generalization but has meaning as new trial to enlarge the basic vocational competency of students in major subject, "Software Engineering". We expect new study for inter-relationship change of students to evaluate generality based on the proposed method in this paper.

• 한국정밀공학회지
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• 제32권2호
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• pp.141-147
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• 2015

This paper deals with thermal characteristic analysis of induction motors for machine tool spindle for motion error prediction. Firstly, the inverse design of general induction motors for machine tool spindle has been performed by design principles. Characteristics considering VVVF inverter of induction motors were analyzed. Secondary, power loss and thermal characteristics of induction motors analyzed by equivalent thermal resistance model from Motor-CAD S/W. To develop a second-order fitted power-loss distribution model for the constant-torque operating range of the induction motor, we employed the design of experiment and response surface methodology techniques. Finally, the analysis results were experimentally verified, and the validity of the proposed analysis method was confirmed.

• 한국인터넷방송통신학회논문지
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• 제15권3호
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• pp.225-234
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• 2015

스마트폰이나 탭 컴퓨터 등과 같은 대부분의 모바일 기기는 LCD 스크린의 터치를 통해 사용자의 입력을 받는 소프트 키보드를 사용하고 있다. 모바일 기기의 LCD 패널은 크기가 작기 때문에, 가능하면 적은 수의 키를 사용하고, 입력이 효율적인 소프트 키보드를 개발하고자 하는 많은 노력들이 진행 중이다. 한글 키보드의 경우, 특별히, 키 조합이나 중복키로부터 키를 입력받아 한글 문자를 인식하는 한글 오토마타를 작성하는데 많은 시간과 노력이 들어가며 전문성을 필요로 한다. 본 논문은 일반 사용자들도 자신만의 한글 소프트 키보드를 쉽게 만들 수 있는 저작 도구를 설계하고 구현한 내용에 대해 소개한다. 본 저작 도구로 제작한 소프트 키보드는 바로 사용자의 단말기에 탑재하여 실행할 수 있다.

• 한국직업건강간호학회지
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• 제19권1호
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• pp.5-13
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• 2010

Purpose: This study aims to develop a tool to predict occupational health patients' nursing needs or nursing time. Method: A tool was composed based on the materials and opinion of experts, and to verify the reliability and validity of the tool, nursing time of total 311 inpatients in 2 occupational health hospitals were surveyed. Results: The developed tool was total 151 items and composed of physical function, cognitive function, communication, emotional and disturbance behavior, nursing skill, and rehabilitation need. The reliability of the tool was high, showing Cronbach's alpha coefficient of 0.95. But several items should be deleted for low corrected item-total correlation. According to the multiple regression analysis, physical function and rehabilitation need were shown to be the most powerful predictive variables for nursing time. Conclusion: The developed tool was appeared to have high reliability and validity. But further refinement of the tool is needed.

• 한국IT서비스학회지
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• 제12권4호
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• pp.41-57
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• 2013

As the usage of SNS has grown dramatically over the last years, it has been used in various sectors not just a tool for communication. In particular, corporate companies actively use Facebook as a tool for corporate marketing. Corporate companies communicate with their customers by providing service or events information. In this study, empirical analysis was carried out on corporate companies that are using Facebook as a marketing tool, thus finding out the influencing factors in continued usage of Facebook Fan Page users. In addition, analysis of the factors will be investigated according to continued usage of the users, where the user's intention will differ depending on how corporate companies operate and deal with the Facebook Fan Page. Factors affecting the user's satisfaction, perceived usefulness, and perceived playfulness were deducted through the analysis of the existing literature study on corporate company's continued intention on the usage of Facebook Fan Page. Accordingly, factor affecting this such as relationship, speed, content diversity, which are the media characteristics of the Facebook were deducted and finally hypothesized. In addition, the type of corporate company's Facebook Fan Page was divided into event type, communication type, information service type. And hence investigated the factors that differed from the continued usage depending on the type. Results analysis shows that perceived usefulness affected only relationship, speed, content diversity. Furthermore, analysis shows that corporate company's Fan Page of communication and event types are the factors that affect the usage intention which meant it only affected the perceived enjoyment. On the basis of this study, we are able to present an implication of value where corporate company use it as a marketing tool, through factors from continued usage of coroporate company's Facebook Fan Page users.

• 보건교육건강증진학회지
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• 제21권3호
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• pp.87-100
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• 2004

Objective: This research has been conducted in order to conduct sex education using information and communication technologies (ICT) which is currently taught to elementary school students, understand how this method of education affects the knowledge of and attitude towards sexual health in them, so that it could be actually applied in classrooms. Subject: 115 students were divided into three different groups: a comparison group of 38 students (who were given no sex education at all), control 2 group of 39 students (who were given sex education via video programmes), and control 1 group of 38 students (who were given sex education using ICT). Research Tool: A questionnaire used by the literature studies. After verifying content validity, it was modified and supplemented in this way: sex knowledge was reduced to 26, and sex attitude was also reduced to 11. The reliability of the research tool was Cronbach's a=0.86 for sex knowledge tool, and Cronbach's a=0.81 for sex attitude tool. The collected data have been analysed using SPSS 11.0 program. The content validity was analysed by factor analysis and multiple regression analysis, and hypothesis verification was analysed using repeated measure ANOVA test. Result: 1) In sex knowledge marks, there was a significant difference according to the group (p=.009) and point of time (p=.000), and there was a significant interaction between the groups and point of time(P=.000). As a result, it turned out that both video programmes and ICT were significantly effective in improve the knowledge. 2) In sex attitude marks, there were no significant differences according to the group (p=.213), but there was a significant difference according to point of time (p=.002), and there was a significant interaction between the groups and point of time(P=.018). As a result, it turned out that only the education method using ICT was effective in improving the attitude. Conclusion: From the results of this research, it can be said that the sex education using ICT was the most effective method in improving the sex knowledge and attitude of students at elementary school. Therefore, it is advisable that the sex education methods using ICT should be developed and applied continuously.

• 대한안전경영과학회지
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• 제26권1호
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• pp.55-61
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• 2024

In this paper, in order to study the relationship between the safety culture of highway management agencies and disaster reduction activities (BCMS), a measurement tool was identified through previous research on safety culture, and the validity of the measurement tool was confirmed through exploratory factor analysis. I want to check. The subjects of the study were workers belonging to disaster reduction activity management system certification organizations among highway management organizations. The highway management agencies are the Korea Expressway Corporation, which manages the functional continuity of national highways nationwide, and 8 of the 21 private road agencies that manage the functional continuity of the highways. The safety culture measurement tool is an indicator that measures safety culture factors, and is reorganized by the researcher based on survey items from previous studies, with management/manager safety values and attitudes, safety communication, safety education and training, and safety regulations/management system as subfactors. A total of 24 questions were comprised of the survey tool. As a result of the study, the result of exploratory factor analysis was that the safety culture scale was extracted into four factors based on theoretical grounds, and the total cumulative variance was 80.360%. When checking the questions for each factor, it was found that all the questions loaded on the factor that was originally intended to be measured. Factor 1 is management, factor 2 is safety, and factor 3 is communication., Factor 4 was named education. Number of questions: 4 management questions, 3 safety questions, communication It consisted of 4 questions and 2 education questions.

• 한국정보전자통신기술학회논문지
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• 제12권2호
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• pp.120-126
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• 2019

최근 정밀기계, 전기전자, 반도체 등의 급속한 산업의 발달로 전장장치의 고정밀도 가공의 필요성이 증대하고 있다. 작업자의 감각과 경험에 의존하던 절삭 공작기계 제어는 CNC(Computerized Numeric Controller: 컴퓨터 수치제어) 도입으로 가공 정밀도가 획기적으로 개선되고 있다. 또한 공작 기계의 운전 상태를 실시간 반영하는 가공 동특성(cutting dynamics)기법이 관심을 받고 있다. 본 논문은 CNC 공작기계에 음향센서를 부착하여 공구떨림 감지 및 안정화하는 방안을 제시한다. 공구 이송 위치와 음향센서 데이터를 동기화 하고 수집된 음향 주파수에서 이상 진동음에 대한 주파수를 분석하여 떨림을 감지한다. 또한 가공 동특성 기법을 적용하여 공구떨림 감지와 안정화의 신뢰성을 높인다. 제안한 기법은 금형 가공의 공구떨림 안정화 전후 가공 표면조도의 향상 관점에서 분석 평가한다.

• 한국인터넷방송통신학회논문지
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• 제21권4호
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• pp.129-134
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• 2021

전동공구는 동력원인 모터를 이용하여 각종 구조물을 제조 가공하는데 사용되는 공구로 전기를 동력원으로 한 모터를 사용하여 감속장치, 동력전달 및 변환장치 기능을 내장시켜 도구에 회전, 왕복, 진동 운동을 시킴으로써 사용자의 동작기술을 보조하는 역할을 하도록 한 공작용 도구이다. 우리나라의 경우 전동공구 산업은 역사가 짧아서 독일이나 미국, 일본 등 선진국에 비하여 기술수준과 시장 점유율, 인지도 등이 뒤떨어지고 있다. 또한 국내에서 사용되는 전동 Driver는 미국, 유럽 나라의 해외제품으로 국내시장 또한 100% 해외업체 것을 선호하며 다국적 기업들이 국내 시장에 많은 투자를 하고 있는 실정이다. 따라서 국내 기술개발과 지속적으로 높은 시장점유율을 확보하기 위해서는 기술적인 개발이 뒤따라야 한다. 본 논문에서는 전동공구의 기본요구 성능에 맞춰 모터의 성능, 소형화, 고속도의 고출력 성능을 가지는 전동기 Driver를 설계하여 최종적으로 산업용 및 의료용에 적용할 수 있는 개발품을 연구하는데 목적을 두고 있다.