• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 춘계학술대회
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• pp.499-502
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• 2010

프로그램의 복잡화와 대규모프로그램의 등장으로 다중작업을 분할하여 소규모 단위의 Task로 나누고 각각의 Task를 우선순위에 따라 스케쥴링을 수행해야하는 요구가 점점 확대되고 있다. 또한, 프로그램 개발환경의 다양화로 인하여 프로그램을 구현하다 보면 다양한 환경 조건에 맞춰서 개발하게 된다. 예를 들어 Embedded 환경인지 Windows 환경인지에 따라 다르고 운용체제의 사용에 따라서도 제약사항을 가져오는 경우가 많다. 이에 개발환경과 운용체제에 의존적이지 않도록 다중작업 분할처리를 수행할 수 있는 적응형 스케쥴링 기법을 소개한다. 본 논문에서는 적응형 스케쥴링 기법에 적용된 알고리즘에 대한 설명과 구현 후 적용한 사례를 기반으로 한 내용을 다룬다.

• 한국도서관정보학회지
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• 제42권4호
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• pp.31-50
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• 2011

교육에 있어서 평가는 피교육자의 성장과 발달 정도를 확인하고, 교육의 질적 향상을 도모하는 중요한 요소이다. 평가의 방법에는 여러 가지가 있으나 지필시험, 객관식 고사와 같은 전통적인 평가 방식이 갖는 한계를 극복하기 위해서 수행평가가 등장하였다. 수행평가는 피교육자가 과제를 완성한 정도나 상태를 바탕으로 평가하는 방법이다. 정보활용교육은 피교육자의 정보활용능력을 신장하는데 목적이 있으며, 수행평가는 정보활용능력의 상태나 정도를 측정하는데 매우 적합하다. 수행평가를 위해서는 먼저 수행과제가 준비되어 있어야 한다. 그러나 교수자가 수행평가의 요건을 모두 고려하여 수행과제를 개발한다는 것은 쉽지 않다. 이에 본 연구에서는 교수자가 정보활용교육을 전개함에 있어서 수행과제를 쉽게 제작할 수 있도록 수행과제 개발도구를 제안하고자 한다. 본 연구에서 제안한 수행과제 개발 도구는 템플릿 형태를 취하고 있으며, 4단계 즉, 교육목적 및 학습목표, 지식과 기능, 과제 유형, 측정 및 채점기준으로 구성하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 D
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• pp.2489-2491
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• 2005

Currently, Programmable Logic Contorller(PLC) uses Real Time Operation System(RTOS) as basic OS. RTOS executes defined results as to defined time. General features of RTOS emphasize the priority in each task, high-speed process of external interrupt, task scheduling, synchronization in task, the limitation of memory capacity. For safety critical placement, PLC software needs Verification and Validation(V&V). For example, nuclear power plant. In this paper, PLC RTOS is verified by formal methods. Particularly, formal method V&V uses verification tool called 'STATEMATE', and shows the results.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.400-400
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• 2000

This paper purposed that verify the validity of Petri Net method for control progressive increase of system complexity, before extend the realized single robot system to multi-robot system. An autonomous mobile robot(AMR) needs decision making, motion control, path planning, tracking a path, obstacle avoidance, and sensor fusion, to complete its task. An AMR integrates and operates these technics through a consistent command system. An error in a command hierarchy which is like duplication or omission of a control command hierarchy for each module results in serious problems. This paper minimizes the error by modeling each module and whole system using Petri Net graphical representation and applies it to the exploration task of an AMR

• 대한가정학회지
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• 제40권5호
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• pp.195-210
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• 2002

The purpose of this study were to find out the difference of needs of caring between care-givers and non care-givers, and to suggest the way of lessening vigorous task of care-givers for the elderly with dementia. Data were collected from 130 nationwide respondents intentionally divided into two groups; care-givers and non care-givers in the middle aged with middle and upper income. Collected data were analyzed by frequency, percentage, t-test using SPSS package. Since the result of survey, unexpectedly, showed no difference between two groups, it could be explained as that these two groups commonly had same needs of caring for the elderly with dementia. Major findings were as follow; 1) Most Koreans stiff thought family should be the main care-giver for the elderly with dementia prior to nation or society. 2) Responsibility of caring for the elderly with dementia would be better to be shared with children instead of focusing to a child. 3) They thought ideal residential facilities for the elderly with dementia were small-scale professional dementia facility(group home) rather than home or general elderly housing. 4) Professional dementia care hospital was one of the most needed facilities for the elderly with dementia, followed by short-stay and dar-care center. 5) It was revealed care-giving task was vigorous showing that most care-givers spent 1-5 hours a day for caring, while 13% of respondents spent 11-24 hours a duty. 6) 90% of care-givers took the responsibility of main care-giver because of duty of offsprings or spouses, and wanted to be free from their current circumstances. From the result of this survey researchers would like to suggest the establishment of diverse facilities for professional dementia care to lessen the caring burden for the elderly with dementia: group home, chronic hospital, short-stay, day-care center. Financial support from the government for the housing renovation of the caring families should be considered seriously afterward. It is needed to give the opportunity to select proper paid dementia care facilities according to their income and situation of household.

• 한국학교보건학회지
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• 제30권1호
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• pp.70-80
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• 2017

Purpose: Recently, various accidents and incidents occurred in our school environment, making it necessary to enhance teachers' competency in school safety management. To this end, this study was conducted to analyze the needs of teachers related to school safety management competency development. Methods: For this purpose, the existing teacher's task analysis related to school safety management was revised and surveys were conducted to measure teachers' present level, expectative level and importance of the items based on the task analysis. To analyze the data, Borich Needs Assessment and The Locus for Focus Model were used. Results: In the t-test between the teachers' present level and expectative level about school safety management, all 39 tasks were related (p<.001). The priorities in developing teachers' competency in school safety management were found to be the 6 tasks listed below: 'To deal with each type of accident,' 'To implement CPR and defibrillator,' 'To use fire extinguishers and fire hydrants,' 'To use descending life lines,' 'To give first aid,' and 'To cope with elevator accidents.' Conclusion: By utilizing the results of the teacher's competency and need assesment as components, teachers' training programs can be made more applicable to the school setting. In addition, more experience-based programs should be considered when designing teachers' training programs in order to apply the priority found from the teacher's need assessment.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권9호
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• pp.2436-2457
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• 2023

The elderly population is rapidly increasing worldwide, but many face challenges in using digital tools like the Internet due to health and incapacity issues. Existing online search user interfaces (UIs) often overlook the specific usability needs of the elderly. This study proposes an adaptable web search UI model for the elderly, based on their perspectives, to enhance search performance and usability. The proposed UI model is evaluated through comparative usability testing with 20 participants, comparing it to the Google search UI. Effectiveness, efficiency, and satisfaction are measured using task completion time, error rate, and subjective preferences. The results show significant differences (p > 0.05) between the proposed web search UI model and the Google search UI. The proposed UI model achieves higher subjective satisfaction levels, indicating better alignment with the needs and preferences of elderly users. It also reduces task completion time, indicating improved efficiency, and decreases the error rate, suggesting enhanced effectiveness. These findings emphasize the importance of considering the unique usability needs of the elderly when designing search UIs. The proposed adaptable web search UI model offers a promising approach to enhance the digital experiences of elderly users. This study lays the groundwork for further development and refinement of adaptable web search UI models that cater to the specific needs of elderly users, enabling designers to create more inclusive and user-friendly search interfaces for the growing elderly population.

• 한국멀티미디어학회논문지
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• 제13권10호
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• pp.1423-1435
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• 2010

무선 센서 네트워크를 구성하는 센서 노드는 배터리 기반의 제한된 전원과 낮은 연산 능력의 초경량 마이크로프로세서, 그리고 제한된 크기의 메모리 자원 등과 같은 하드웨어 사양을 가지고 있다. 이와 같은 제약 사항에도 불구하고 무선 센서 노드는 센싱 데이터의 실시간 처리 및 데이터 송수신 작업을 동시에 병행할 수 있어야 한다. 이에 본 논문에서는 배터리 작동식의 무선 센서 노드를 위한 에너지 효율적인 실시간 태스크 스케줄링 기법을 제안하였다. 제안한 에너지 효율적인 실시간 스케줄링 가법은 태스크의 실제 실행시간이 최악 실행시간보다 작을 경우에 발생되는 태스크의 실행 여유시간을 이용하여, 마이크로프로세서의 동작 주파수를 조절하고 무선 센서 노드의 전력 소비를 줄인다. 제안한 기법의 동작을 시험한 결과, 효율적인 전력 소비를 제공함과 동시에 실시간 태스크의 마감시한이 보장됨을 확인하였다.

• 공학교육연구
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• 제25권2호
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• pp.3-12
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• 2022

The purpose of this study was to investigate the perceptions and educational needs of the university faculties in charge of capstone design courses. To achieve the purpose of this study, the 100 questionnaires collected from the faculties nationwide with teaching experience in capstone design courses were analyzed using descriptive statistics analysis, the Borich needs assessment model, and the Locus for focus model. The faculties perceived the importance of their roles in the following order: coaching students, providing opportunities for students to show their abilities, motivating and encouraging, and building trusting relationships with students. The biggest challenges that the faculties perceived in capstone design classes were the lack of university-industry collaboration and project execution time. In the analysis of the needs for the capstone design process, the research results showed that team-building, core task development and analysis, deriving problem-solving ideas, building prototypes, and comprehensive reflection ranked the top priorities. This study is expected to help the design of the courses and the development of customized faculty support programs by analyzing the faculties' perceptions and needs for capstone design classes.

• 감성과학
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• 제16권3호
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• pp.305-310
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• 2013

This user-centered research aims to empirically evaluate color temperature (K) and illuminance (lx) of residential bathroom lightings to determine the most optimal lighting conditions for productive task performance as well as for satisfying users' emotional needs. Using 3 LED lighting fixtures, 4 types of lighting contexts were investigated; main lighting, task lighting, shower lighting, and bath lighting. Two lightings were installed parallel to the vertical edges of the main bathroom mirror to be used as main and task lighting, while another fixture was installed above the bathtub to be used for shower and bathing. For each lighting context, subjects (N＝54) were instructed to perform a few tasks during which time the users were exposed to different lighting conditions with color temperature ranging from 2700 K ~ 6500 K and illuminance ranging from 100 lx ~ 700 lx. Upon completing the given tasks, subjects were asked to evaluate the lighting conditions and their applicability for performing the given tasks. Based on the user evaluations, the most optimal lighting conditions for the different lighting scenarios are as follow: 1) 3500 K ~ 4300 K and 150 lx for main lighting, 2) 3500 K ~ 4300 K and 500 lx ~ 700 lx for task lighting, and 3) 2700 K ~ 3500 K and 100 lx ~ 150 lx for shower/bath lighting. These results can be used to adjust the lighting standards suggested by KS, as well as be utilized by both engineers and designers in designing new types of user-centered bathroom lightings.