• 웰빙융합연구
• /
• 제6권2호
• /
• pp.9-13
• /
• 2023

Purpose: In this study, we would like to make a technical proposal to solve the odor problem in pig houses. Through this, we would like to suggest an effective way to reduce the odor generated in the pig house as a solution to civil complaints. Research design, data and methodology: Conduct direct visits to pig farms where many civil complaints about bad odor occur, and identify the problems of each farm. Identify elements related to odor control, such as structure, facility, equipment, odor management method, and ventilation type. Through this, the technology to be applied to reduce odor and the solution to the odor problem are presented. Results: The results of major improvements are as follows: 1. Improvement of the structure of the barn or composting shed to an airtight type 2. Improvement of the pig manure treatment structure using the slope inside the barn 3. Establishment of ventilation and cooling systems 4. Automation of the mist spray system. Conclusions: As a result, as practical measures, sealing of facilities using winch curtains, construction of air conditioning systems using negative pressure ventilation, and management systems using AIoT systems were presented. It is judged that this study can be helpful in determining the grievances caused by civil complaints of tenant livestock farms and the direction of facility improvement in the future.

• Nuclear Engineering and Technology
• /
• 제56권1호
• /
• pp.92-99
• /
• 2024

To minimize the cumulative radiation dose, various path-finding approaches for single agent have been proposed. However, for emergence situations such as nuclear power plant accident, these methods cannot be effectively utilized for evacuating a large number of workers because no multi-agent method is valid to conduct the mission. In this study, a novel algorithm for solving the multi-agent path-finding problem is proposed using the conflict-based search approach and the objective function redefined in terms of the cumulative radiation dose. The proposed method can find multi paths that all agents arrive at the destinations with reducing the overall radiation dose. To verify the proposed method, three problems were defined. In the single-agent problem, the objective function proposed in this study reduces the cumulative dose by 82% compared with that of the shortest distance algorithm in experiment environment of this study. It was also verified in the two multi-agent problems that multi paths with minimized the overall radiation dose, in which all agents can reach the destination without collision, can be found. The method proposed in this study will contribute to establishing evacuation plans for improving the safety of workers in radiation-related facilities.

• 한국초등과학교육학회지:초등과학교육
• /
• 제40권1호
• /
• pp.113-125
• /
• 2021

In this study, a problem-centered learning based STEAM field experience learning program was developed and the effects of applying it were investigated. The program was composed of 8 sessions by using problem-centered learning education method and integrating STEAM elements between disciplines. The contents of program are as follow. In the step of sharing problems and making a problem-solving plan, they understood the various examples and meanings of endangered species, explored the project activities, and made an inquiry plan. In the search and re-exploration phase, a smart device was used to investigate the appearance, habitat environment and cause of extinction for Clithon retropictus, and a site inquiry plan was established for each group. Then, they moved to the field to explore brackish-headed gallops and discuss ways to protect endangered species. In the step of creating a solution, a web-based report was produced as the final product using smart devices based on the results of the inquiry. In the presentation and evaluation stage, the produced web-based report was used to present each group, conduct mutual evaluation, and organize project activities. The developed program was applied to 6th grade 29 students enrolled in the J University Gifted Education Center. In order to find out the effectiveness of the program, tests of science process skill, creative problem-solving ability, and scientific attitude were conducted before and after of program learning, and the results were statistically analyzed by t-test. In addition, a STEAM program satisfaction test was conducted after project in order to find out the satisfaction of the class. As a result of application of the program, the results were significantly improved in openness, criticism, and creativity among the sub-factors of creative problem-solving ability and scientific attitude. Satisfaction with the STEAM program was also high, but no significant result was found in science process skill. Therefore, the program of this study could be influenced on improvement of creative problem-solving ability and scientific attitude of gifted students in elementary science.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
• /
• 제14권2호
• /
• pp.183-196
• /
• 2003

연구목적：본 연구에서는 정상 아동 및 외래 내원 아동을 대상으로 한국어판 코너스 부모 및 교사용 평가 척도 (Korean-Conners' Parent Rating Scale：K-CPRS and Korean-Conners' Teacher Rating Scale：KCTRS) 의 간편형에 대한 신뢰도와 타당도를 조사하였다. 방 법：경기도 중소도시 지역에 소재한 두 초등학교에 재학 중인 아동들과 같은 지역 대학 병원 외래에 내원한 ADHD 아동 환자들이 연구 대상에 포함되었다. 연구대상의 교사 및 부모는 코너스 평가 척도를 완성하였으며 추가로 한국어판 ADHD 평가 척도(Korean-ADHD Rating Scale：K-ARS)를 작성하였고 부모는 별도로 한국어판 아동·청소년 평가 척도(Korean-Children Behavior Check List：K-CBCL)를 작성하였다. 자료 분석 방법으로는 기술 통계, 상관 분석, 신뢰도 분석, 요인 분석, t검증과 일원 변량 분석이 실시되었다. 결 과：한국어판 코너스 평가 척도(Korean-Conners' Rating Scale：K-CRS)의 평정자간 신뢰도에서 부모 평가의 정신신체 문제와 불안 요인을 제외하고는 부모 및 교사용 평가 척도의 각 하위 척도들은 서로 유의한 상관을 보였다. 또한 두 척도의 문항들은 비교적 높은 내적 합치도를 보여주었는데, 둘 중에서 교사용 평가 척도가 더 높은 내적 합치도를 나타내었다. K-CRS의 하위 척도치들과 K-CBCL 및 K-ARS의 각 하위척도치는 통계적으로 유의한 상관을 보여주었다. K-CRS에 대한 요인 분석 결과 부모용은 5개 요인 모델이, 교사용은 3개 요인 모델이 가장 최적의 설명 모델인 것으로 나타났다. 부가적으로 ADHD 임상군과 정상군간의 척도 점수에서의 차이를 살펴보았을 때 두 군 간에 통계적으로 유의한 차이가 나타났다. 결 론：한국어판 Conners 부모 및 교사용 평가 척도는 아동들의 문제 행동을 평가하는데 있어 적정한 신뢰도와 타당도를 가지고 있었으며 임상 장면에서 아동의 행동 문제에 대한 평가 및 진단에 유용하게 사용될 수 있을 것으로 보인다.

• 한국산학기술학회논문지
• /
• 제20권4호
• /
• pp.160-168
• /
• 2019

본 연구는 청소년의 정신건강 특성이 문제음주에 미치는 영향을 파악하여 청소년의 문제음주 예방을 위한 간호중재 및 교육의 방향을 제시하고자 수행되었다. 연구방법으로는 2017년 청소년건강행태온라인 조사의 원시자료를 이용한 이차분석 연구로, 본 연구에서는 연구주제의 특성 상 음주경험이 전무한 청소년은 제외한 후 9,597명이 최종분석에 사용되었다. 자료 분석은 SPSS Win 23.0 프로그램을 이용하여 빈도분석, ${\chi}^2$-test, 로지스틱회귀분석을 실시하였다. 연구결과 일반적 특성에서는 학교, 주관적 학업성적, 거주형태, 아버지의 학력, 경제 상태가 문제음주에 영향을 미치는 요인으로 나타났고 정신건강 특성에서는 우울감 경험(95% CI:1.578~1.930, p<.001), 주관적 행복감(95% CI:1.039~1.491, p=.002), 자살생각의 유무(95% CI:1.110~1.426, p<.001), 주관적 수면충족(95% CI:1.085~1.399, p=.001)이 청소년의 문제음주에 영향을 미치는 주요 요인으로 나타났다. 따라서 청소년을 대상으로 하는 문제음주 예방 교육이나 간호중재 프로그램을 진행 할 때 대상자의 정신 건강 특성을 고려하여 전문가의 심도 있는 상담을 받을 수 있도록 제공하는 방법이 필요하다. 본 연구의 제한점을 보완하여 문제음주에 대한 추세를 살펴보거나 청소년의 특성을 깊이 파악하기 위해 심층 면접을 통한 질적 연구를 시행하면 임상에서 나 지역사회에서 청소년 문제음주 대상자들을 중재하는데 있어 간호사의 역량을 발휘하는데 좋은 지침이 될 것이다.

• Asia pacific journal of information systems
• /
• 제10권2호
• /
• pp.71-95
• /
• 2000

Despite repeated exhortation about the importance of social and human dimensions of systems development, socio-organizational issues continue to be neglected and ignored in the current information systems practice. A review of the human information processing literature suggests that the reasons for this continuing lack of attention to social issues may be found in the limitations of human cognition and information processing capacities. Bostrom and Heinen(1978) and Kumar and Bjorn-Anderson(1990) also suggest that the inadequate attention to social problems and issues by the analyst could originate from the analysts limited problem perception. This research explores how the representation forms of information systems(IS) methodology used in understanding and modeling the problem situation affect such systems development problem perception. Typically, a system development methodology prescribes the use of system models(i.e., system representations) to understand, analyze, evaluate, and design the information system. Given the size and complexity of information systems, and the abstraction and simplification underlying the modeling process, system representations usually depict only a limited set of aspects of the system. Thus, a methodology whose representations are limited to technical aspects will tend to limit the analyst's perspective to a technical one only(Kumar & Welke, 1990). Following the same line of argument, in contrast, it is the conjecture of this study that a methodology which specifies both social and technical aspects of IS development will help the analyst develop a more comprehensive view of the IS problem domain. Based on the above concept, a theoretical model was first developed which explained the systems analysts cognitive process. Drawing on this model, a research model was developed hypothesizing the impacts of representation forms on problem identification. The model was tested using a laboratory experiment with 70 individual subjects. A special computer software was developed with a hypermedia authoring tool to conduct the experiments in order to avoid experimenter biases and to maintain consistency in administrating repeated experiments. The program, designed to replace the experimenter, consisted of functions such as presenting the subjects with problem material, asking the subjects questions, and saving the typed answers of the subjects. The results indicate that representation forms strongly influence problem identification. It was found that the use of the socio-technical representation form led to the findings of more social problems than the use of technical representation form. The results imply significant effects of representation forms on problem findings and also suggest that the use of adequate representation forms may help overcome dysfunctional effects of our limited information processing capacity.

• 한국시스템다이내믹스연구
• /
• 제13권1호
• /
• pp.63-80
• /
• 2012

This paper is aiming at providing the systems thinking perspective on the collapse of the savings and loan banking system in Korea. Two causal loop diagrams are developed to conduct the analysis: The first is focusing on the structural problems included in the establishment of S&L banking in 1990s. The later is developed based on the project financing mechanism by controlling the credit standard required during the due diligence. The result of this study shows that the main cause of the collapse of the S&L banking is the structural problem connected to real estate market including the failure of regulation.

• 한국항해항만학회지
• /
• 제40권5호
• /
• pp.329-336
• /
• 2016

The overall purpose of this paper is to conduct research on alternatives for strengthening the competitiveness of a state-run shipping company, Vinalines Corporation, the largest shipping and maritime enterprise in Vietnam. The first section of the introduction gives a panoramic overview of the current development situation of the Vietnam maritime industry and Vinalines. After summarizing a literature review in section 2, some alternatives are proposed in sections 3 and 4 to overcome the current difficulties of Vinalines and to improve the corporation's competitiveness for sustainable development by utilizing linear optimization and financial analysis. The final section presents a summary and recommendation for future study. It is concluded that privatization is the key solution for every problem faced by the corporation at present. Furthermore, modification of laws, restructuring of enterprise governance, financial situation, and fleet are also extremely necessary.

• 지역사회간호학회지
• /
• 제10권1호
• /
• pp.44-52
• /
• 1999

This investigation & study has been made in oder to revitalilize the health care for the elderly in public health centers. The date subject, including 88 persons in charge health services in public heal centers, were from Chejudo. These were largely female, the average age was 38.4 at the health center. Their responsibilities included home visitation, nutrition management for the early, health education, and physical therapy. The most important problem were personal management and a lack of facilities, especially in home visitation, health education, physical therapy. Systematic networks of various activities are needed to encourage not only the patient but also volunteer who will also take part in these services. The numbers of members in charge of the elderly are not only to be increased and educate with facilities and equipment but also better provided with proper facilities and equipment. This is the best way to conduct health services the elderly.

• 품질경영학회지
• /
• 제23권4호
• /
• pp.58-63
• /
• 1995

To access the quality of a fit to a set of data it is always useful to conduct a posteriori analysis involving the examination of residuals, detection of influential data values, etc. Smoothing splines are a type of nonparametric regression estimators for the diagnostic problem. And leverage value, Cook's distance, and DFFITS are used for detecting influential data. Since high leverage points will always have small residuals, the new diagnostic measures including of properties of leverage and residuals are needed. In this paper, we propose FVARATIO version as diagnostic measure in nonparametric regression. Also we consider the rough bound as analogy with linear regression case.