• 정보처리학회논문지D
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• 제13D권4호
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• pp.613-618
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• 2006

임베디드 소프트웨어의 적용범위가 넓어짐에 따라 소프트웨어의 개발시간을 줄이기 위한 많은 개발도구가 개발되었다. 하지만, 기존 도구들은 특정 플랫폼 적용을 목적으로 개발되었기 때문에 적용 가능한 범위가 제한된다. 이러한 문제 해결을 위하여 다양한 통신 환경을 지원함으로써 플랫폼 제약을 제거한 임베디드 모니터링 시스템을 개발하였다. 임베디드 모니터링 시스템은 코드 인라인 기법을 통하여 모니터링 과정을 진행한다. 하지만, 코드 인라인 기법은 모니터링 센서의 수행에 대한 부하문제를 가지고 있기 때문에 모니터링 센서의 최적화에 대한 고려가 필요하다. 이에 본 논문에서는 모니터링 과정 초기화 방안과 모니터링 센서 최적화를 위한 비트마스킹 기법을 제안한다. 개발된 임베디드 모니터링 시스템은 임베디드 시스템을 사용하는 모든 분야에 적용가능하다.

• 한국간호교육학회지
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• 제8권1호
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• pp.84-94
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• 2002

The purpose of this descriptive study was to identify problems and solving strategies on student evaluation of clinical nursing education. Subjects were 239 nurses in 18 hospitals from February to July, 1999. Content analysis using qualitative research method was used to analyze data taking into account the semi-structured questionnaire. The results of this study were as follows: Four categories about problems and solving strategies on the evaluation of clinical nursing education were identified: 'The environment of the clinical nursing education'; 'contents and items of evaluation tool'; 'criteria of evaluation tool'; and 'problems with evaluators in clinical settings'. The problems of the environment of the clinical nursing education were due to the lack of co-ordination between nursing schools and hospitals. In order to solve these problems, the following strategies were suggested: 'initiate a joint meeting between nursing schools and hospitals'; 'do not change the clinical settings frequently'; 'evaluate students after being familiar with them'; and 'evaluate them immediately after clinical practice was ended'. In the problems of contents and items of the evaluation tool, the contents of the tool were very abstract and general. The strategies for treating these problems were to evaluate student using the concrete evaluation items'; refrain from evaluation of nursing knowledge', develop the evaluation tools that are fit for a specific clinical setting'; develop the evaluation tools in line with students' knowledge level; and 'carry out evaluation using the proper contents of tool. The problems of criteria of the evaluation tools were the results of the lack of the clear criteria. The strategies for treating these problems were 'develop the criteria of the evaluation tool'; simplify the range of the cores or evaluate students using check-list'; to evaluate students in objective manner'. The problem of evaluators in clinical settings was due to the failure by evaluators who were not prepared for the task. The strategies were 'to educate and prepare the evaluators before evaluation'.

• 가정과삶의질연구
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• 제28권3호
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• pp.27-41
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• 2010

In this study, based on the current curriculum of consumer education in high school with the advent of Web 2.0 age, I analyzed both the curriculum used by new information tools related with Web 2.0 age and the one used by traditional tools to find out the degree of necessity of consumer education for the high school students in proportion to the level of their informational ability. First, compared with the education of food, clothes and shelter in the curriculum of manual training and domestic science, the necessity, importance, and availability were low and the students had a lower level of interest than they had with the three factors mentioned above. Second, after dividing the sector of consumer education in the curriculum into three fields such as reasonable purchase and use, solution and prevention of consumer problems and forming a new consumer trend, I looked into the necessity of the teaching method using conventional tools and the one using new informational tools following Web 2.0 age respectively. Traditional tools were favored for the education of consumption-related laws and policies, consumers' rights for the general cause of consumer problem solving and preventing. For the generation of the new comsumer trend, the new information tools were preferred in the appreciation of consuming culture and the issues of consuming environment. Third, it was revealed that students' level of informational ethics was the highest at 5.55 while their level of information creation and processing was the lowest at 3.96 from the research of six categories of their informational ability.

• Human Ecology Research
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• 제56권1호
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• pp.99-108
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• 2018

This study develops a scale to measure the practice of consideration and sharing by adolescents. This data as an object of high school students in regards to items generated from the content validity test and preliminary study stage based on the consideration scale, literature review and expert for elementary school students on a 5-point Likert scale. The factor analysis of the collected data using SPSS 20.0 2 indicated the final fators. The three fanal factors designated by the measuring items are: 'practice of consideration and sharing', 'recognition of consideration and sharing', and 'self-recognition'. As a result of analyzing students' individual variables, this study found that family relationship satisfaction and school life satisfaction had positive relationship in self-recognition, recognition of consideration and sharing, practice of consideration and sharing, and total personality score. The measurement tools developed in this study, are expected to act as valid tools to develop a program that can increase the practice of consideration and sharing activities.

• 국제학술발표논문집
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• The 10th International Conference on Construction Engineering and Project Management
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• pp.1308-1308
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• 2024

Computer vision techniques have been widely employed in automated construction management to enhance safety and prevent accidents at construction sites. However, previous research in the field of vision-based approaches has often overlooked small-sized construction tools. These tools present unique challenges in data collection due to their diverse shapes and sizes, as well as in improving model performance to accurately detect and classify them. To address these challenges, this study aimed to enhance the performance of vision-based classifiers for small-sized construction tools, including bucket, cord reel, hammer, and tacker, by leveraging synthetic images generated from a 3D virtual environment. Three classifiers were developed using the YOLOv8 algorithm, each differing in the composition of the training dataset: (i) 'Real-4000', trained on 4,000 authentic images collected through web crawling methods (1,000 images per object); (ii) 'Hybrid-4000', consisting of 2,000 authentic images and 2,000 synthetic images; and (iii) 'Hybrid-8000', incorporating 4,000 authentic images and 4,000 synthetic images. To validate the performance of the classifiers, 144 directly-captured images for each object were collected from real construction sites as the test dataset. The mean Average Precision at an IoU threshold of 0.5 (mAP_0.5) for the classifiers was 79.6%, 90.8%, and 94.8%, respectively, with the 'Hybrid-8000' model demonstrating the highest performance. Notably, for objects with significant shape variations, the use of synthetic images led to the enhanced performance of the vision-based classifiers. Moreover, the practical applicability of the proposed classifiers was validated through confidence scores, particularly between the 'Hybrid-4000' and 'Hybrid-8000' models. Statistical analysis using t-tests indicated that the performance of the 'Hybrid-4000' model would either matched or exceeded that of the 'Hybrid-8000'model based on confidence scores. Thus, employing the 'Hybrid-4000' model may be preferable in terms of data collection efficiency and processing time, contributing to enhanced safety and real-time automation and robotics in construction practices.

• International Journal of Contents
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• 제4권3호
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• pp.35-40
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• 2008

Recently, almost games are using the 3D environment. Therefore, it required strongly that well-structured 3D engine or tools for development of some complicate 3D applications efficiently. In this paper, we design and implement a 3D engine (PLay engine) using the DirectX 9 SDK of the Microsoft corporation. The PLay engine has independent module structure, which has object oriented characteristics. and has not only 3D rendering functions but efficient algorithms. Moreover, we implement some tools what has compatibility with our engine for convenience. Therefore, it helps development of a 3D application easily and efficiently. We also describe each module with 2-layer structure, and each tool with compatible module, and make a simple game using PLay engine for testify.

• 한국산업융합학회 논문집
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• 제26권2_2호
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• pp.265-272
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• 2023

In this paper, we directly implemented the Line Tracer ROS package that can detect and follow lines drawn on the map on Gazebo, an open-source that is widely used in autonomous driving research. For line detection, the cv_bridge package was used to enable OpenCV's image processing tools, and parameters such as robot speed, line color and ground material could be changed. In addition, proportional (P) and PID controls could be implemented using the color centroid obtained through image processing. Through this approach, the effect of proportional and differential coefficients on the robot's line tracer motion could be analyzed effectively. In addition, by displaying robot simulation results using various tools of ROS, an efficient development for control nodes could be established in ROS.

• 한국멀티미디어학회논문지
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• 제2권4호
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• pp.476-489
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• 1999

하드웨어와 소프트웨어로 구성된 시스템을 동시협조 설계하는 새로운 설계 패러다임인 HW/SW 통합설계를 지원하는 설계 도구가 많이 개발되고 있다. 기존의 HW/SW 통합설계 도구는 빠른 기술 변화, 제한된 플랫폼, 표준화되지 않은 시스템기술, 일관적이지 못한 사용자 인터페이스, 개발 대상의 다양성, 지원 기능의 차이 등으로 인해 일반화되지 못하고 있다 본 논문에서는 이런 문제점을 해결하기 위해, 웹에 기반 한 개방형 분산 HW/SW 통합설계 환경을 제안한다. 제안한 HW/SW 통합설계 환경은 객체에 기반 한 3층 클라이언트/서버 구조를 가지며, 특정 벤더에 구애받지 않는 개방성을 지닌다. 또한 세션 서비스를 이용한 협동 작업 환경을 지원하며, OOUI를 채택해 사용자 인터페이스를 크게 변경하지 않고 새로운 기능을 쉽게 추가할 수 있다. 제안한 환경은 효율적이고 안전한 설계 데이터의 전송을 보장하기 위해 트랜잭션 서버와 보안 서비스를 포함한다. 제안한 환경의 타당성을 입증하기 위 해 웹에 기반 한 개방형 분산 HW/SW 통합설계 환경의 프로토 타입인 WebCEDA를 개발하였다. 제안한 환경은 일반적인 CAD도구의 웹-기반 환경의 모델로 활용될 수 있다.

• International Journal of Advanced Culture Technology
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• 제6권4호
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• pp.323-330
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• 2018

The growth of the older population is expected to further increase social problems associated with population aging, such as isolation, poverty, and depression. The emerging issues associated with the older population are also expected to provide further momentum on studies about the dwelling environment as factors that ensure the health of older people as well as improve their quality of life. Therefore, approaches for explaining the issues of the older age group should be diversified using a variety of factors and appropriate analytic tools. Studies on measuring depression have principally focused on assessing an objective self-report questionnaire, usually in a highly structured, textual form which may not reflect the cognitive impairment of older adults. The aim of this study was to define and measure dwelling depression among older adults in Korea. There are two specific hypotheses in this study as follows: (a) there will be statistically significant relationships with dwelling dissatisfaction and depression, and (b) dwelling depression tools containing text and images will be, respectively, assessment tools that have a good construct with content validity and reliability. In the first experiment, to define and measure dwelling depression, 301 people over 65 years old living in single and two-person households were surveyed using a text-based dwelling depression questionnaires from September 1-30, 2017. In the second experiment, to examine whether the projective image questionnaire could serve as a suitable replacement for the text-based questionnaires, the same participants were surveyed from January 22 to February 2, 2018. The results show that depression has a close correlation with dwelling dissatisfaction. In addition, the geriatric dwelling depression index (GDDI) based on the projective image was refined. Additionally, the projective image questionnaire has a close correlation with the text-based questionnaire. Finally, through ROC curve analysis, it was found that the projective image questionnaire can accurately predict a depression group. To this end, this preliminary study examined the validity of the projective image questionnaire in older adults to make this instrument feasible for older populations and to contribute to a profound understanding of geriatric depression due to the living environment. We hope they will provide a basis for further research on psychological diagnoses using projective images.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제15권3호
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• pp.154-166
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• 2009

기업 운영에서 발생하는 데이타의 수집과 통합에서부터 의사결정을 위한 정보의 분석 및 그 결과로의 접근을 제공하기 위한 BI 환경에서 최종 사용자들을 위한 프론트-엔드 툴로서는 데이터베이스 쿼리 및 리포팅 툴, OLAP 툴, 데이타 마이닝 툴이 대표적이다. 데이타베이스 쿼리 및 리포팅 툴은 SQL 쿼리 결과 셋을 반영하는 워드프로세서가 생성하는 문서 수준의 정교한 동적 문서의 생성과 웹 환경을 통한 문서 배포 능력이 장점이지만 데이타 소스가 RDBMS로 제한되어 있다. 반면, OLAP 툴과 데이타 마이닝 툴은 각기 고유한 방식으로 데이타를 분석할 수 있는 능력은 강력하지만 차트와 표 등의 제한적인 컴포넌트들만으로 분석 결과를 제공할 수 있다는 한계를 가지고 있다. 본 논문에서는 상호 보완적으로 사용될 수 있는 BI 환경을 위한 프론트-엔드 툴들을 통합하였다. 본 논문에서 제안하는 리포팅 툴은 RDBMS에서 데이타를 추출하기 위한 SQL 기반의 쿼리 편집기만을 내장한 기존의 리포팅 툴과 달리 OLAP과 데이타 마이닝을 위한 쿼리 편집기를 추가하여 OLAP과 데이타 마이닝 서버로부터도 데이터를 추출할 수 있다. 그리고 기존의 리포팅 툴은 동일한 문서를 다수의 사용자들이 조회하는 상황에서 반복된 문서 생성을 피하기 위하여 서버 측에서 문서를 생성하는 구조를 갖지만 이 시스템은 다수의 사용자들을 위한 문서배포 목적이 아닌 사용자들이 데이타 분석 목적으로 서로 다른 문서를 생성하는 상황에 적합하도록 서버 측에 비해 제한된 리소스 환경을 갖는 클라이언트 측에서 동작하는 리포트 뷰어에서 대량의 데이타를 포함하는 문서를 생성할 수 있는 구조와 처리방식을 갖고 있다. 또한 이 시스템에서 접근하는 세가지 종류의 데이타 소스에서 추출한 데이타들을 연계하여 하나의 문서에서 통합할 수 있도록 하는 자료구조를 갖추고 있다. 마지막으로 이 시스템은 특정 벤더의 OLAP과 데이타 마이닝 서버에 종속적으로 동작하지 않기 위하여 웹 서비스 기반의 XMLA를 이들 서버와의 통신 프로토콜로써 선택하였다.