• 자동차안전학회지
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• 제14권4호
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• pp.43-52
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• 2022

Recently, the government has been expanding the supply of hydrogen vehicles according to the roadmap for vitalizing the hydrogen economy, but is developing safety assessment and inspection technology for the relevant vehicles. This study analyzed the prevention of hydrogen bus accidents' economic effect that arises from the application and development of large-capacity CHSS oil pressure repetition-test assessment technology, hydrogen bus internal chamber pressure transmission and emission volume inspection technology, among various technologies capable of assessing the safety of a hydrogen bus fuel system. To this end, the contingent valuation method (CVM), one of the value evaluation methods of non-market goods, was applied to investigate users' willingness to pay for each inspection technology. The survey for users' willingness to pay was conducted by attaching posters to promote surveys on the internet and within buses to the entire public. As a result of the analysis, the average WTP of the hydrogen bus internal chamber pressure transmission volume inspection technology was 25.3 KRW, the average WTP of the hydrogen bus internal chamber pressure emission volume inspection technology was 18.6 KRW, and the average WTP of the large-capacity CHSS oil pressure repetition-test assessment technology was measured at 16.7 KRW. In addition, the costs and benefits of the introduction of the relevant inspection technology were defined through the interviewing of experts at related research institutions and businesses. As a result of conducting an economic analysis (4.5% discount rate) according to the development of each inspection technology, economic feasibility was seen in all assessment and inspection technologies. As much as the technology is indispensable for the safe use of hydrogen buses, it shows that investment in related technology is very necessary in the future. However, because it was decided that the relevant analysis will differ according to the distribution rate of hydrogen buses, further analysis following this future distribution rate of hydrogen buses is needed, and future users should be made clearly aware of the safety and environmental nature of the technology.

• 대한수학교육학회지:학교수학
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• 제4권3호
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• pp.375-399
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• 2002

When a curriculum change is being an issue, the editorships and the promotive directions reflect to supplement the social requests. However it is often criticized that such changes in the textbook itself are not satisfactory enough as to coherent to the editoships. And we set the following research questions; (1) One of the most important changes in the new 7th curriculum is to encourage the students' activities. We checked if it is well suited in the new textbooks. (2) Often textbook itself is not important In class, while instructor or students want something else other than the one suggested in the textbook. We asked 187 teachers how they use the textbooks in class. To answer (1), we checked up the introductory - activity - contents with 7 categories, which are ${\circled1}$ of real life sources ${\circled2}$ in use of concrete manipulative ${\circled3}$ in use of computers or calculators ${\circled4}$ in use of historical resources ${\circled5}$ stimulating to recall a relevant previous knowledges ${\circled6}$ of coherence between the activity and the exploratory contexts. ${\circled2}$ were increased, rewarding to the decrease of ${\circled5}$, in the new textbooks, while changes in ${\circled3}$ and ${\circled4}$ were not enough to talk about increments. Especially slight decrease in ${\circled6}$ were detected and it seemed to attribute to the unmatchable use of ${\circled1}$ and ${\circled2}$ with the explanation of mathematical subjects, which also implies how difficult to match ${\circled1}$ and ${\circled2}$ with ${\circled6}$. Analyzing the reponses of (2), about 70% of the teachers used the introductory activities in the textbook, which led better attention of sudents, while 30% of teachers do not use it because they felt that its inroductory activities had not been adequate for their purposes. Teachers counted inadequacy reasons for not being helpful in class, lack of time or lack of support of students, etc. Those teachers use introductory activities invented of their own for classes. As some results of the study, we suggest firstly that authors of textbooks have to get more informations to provide ways to entcourage students' interest in mathematics classes. The ways must be practical and brain storming as well as More use of computers and calculators and mathematical history are expected. Secondly, we are emphasizing the feedbacks between the textbook authors and the users(teachers and students) through internet. Which, we anticipate, will get better communications between them and be a good foundations of continuous modifications of textbooks.

• 디지털융복합연구
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• 제14권5호
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• pp.377-384
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• 2016

본 연구는 국가 기반 데이터를 활용하여 한국 여자 고등학생의 흡연양상, 건강행태 및 가족특성을 탐색하기 위한 목적으로 수행되었다. 연구설계는 2015년 실시된 11차 청소년건강행태온라인조사의 원시자료를 활용한 서술적 관계 조사연구이다. 연구대상자는 여자 고등학생 2,006명이며, SPSS 23.0 프로그램을 이용하여 분석하였다. 연구결과, 여자 고등학생의 27.5%가 현재 흡연자이며, 30일 이내 흡연 경험이 있는 여고생은 752명(37.5%)이었다. 흡연일수를 기준으로 매일 흡연하는 여고생은 385명(19.2%), 간헐적으로 흡연하는 여고생은 367명(18.3%)으로 분석되었다. 또한 다항 로지스틱 회귀분석 결과, 매일 흡연하는 여고생의 예측요인은 모성의 흡연 여부, 시설거주 여부, 주관적 학업성취도, 주관적인 가정의 경제수준으로 확인되었다. 본 연구를 통해 도출된 결과는 여학생 흡연의 예방 및 관리를 위한 정책 마련 및 교육프로그램 개발을 위해 활용될 수 있을 것으로 기대한다.

• 한국도서관정보학회지
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• 제47권2호
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• pp.99-124
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• 2016

어느 지역이든 공공도서관이 생활밀착형 지식정보서비스 기관, 문화향유 및 평생학습 공간으로 자리매김하려면 서비스 대상인구에 대한 인식조사가 선행되어야 한다. 이에 본 연구는 대구 시민을 대상으로 설문조사 방식을 적용하여 공공도서관의 비중과 중요성, 이용실태와 비이용 이유, 독서프로그램 참여 및 비참여 이유, 도서관 확충(신설) 요망지역 등에 대한 인식을 조사 분석하였다. 이를 바탕으로 국내외 관련 연구, 관계법령, 국민 독서실태조사, 전국문화기반 시설 총람, 대구시민 의식조사, 대구 도시브랜드 시민의식 조사, 광역시도 및 대구시 기초자치단체의 공공도서관 현황 등과 비교하여 대구시 공공도서관의 인프라 충실화 및 이용제고 방안을 제시하였다.

• 유통과학연구
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• 제15권4호
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• pp.69-78
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• 2017

Purpose - The study was AI as exploratory study on artificial intelligence (AI) shopping information services, to explore the possibility of a new business of the distribution industry. For research, we compare to IBM of consumer awareness surveys an AI shopping information service for retailing channel and target goods group. Finally, we present to service scenario for distribution service using AI. Research design, data, and methodology - First, to identify possible the success of the information service shopping using AI, AI technology for the consumer is very important for the acceptance of judgement. Therefore, we explored the possibility of AI information service for business as a shopping. The experimental data were used to interpret the meaning of the relevant literature and the IBM Institute of Business Value (IBV) Report 2015. This research is based on the use of a technical acceptance model (TAM) to determine whether the consumer would adopt the 'AI shopping information service' technology. Step 1 of the process assumes that the consumer adopts AI technology. In step 2, consumers find their preference channels and goods targeted at them as per their preferences. Finally Step 3, we present scenario for 'AI shopping information service' based on the results of Step 1 and 2. Results - Consumers have expressed their high interests in the new shopping information services, especially the on/off line distribution channels can use shopping information to increase the efficiency in provision of goods. Digital channel (such as SNS, online shopping etc.) is especially high value goods such as cars, furniture, and home appliances by displaying it to an appropriate product group. Conclusions - The study reveals the potential for the use of new business models such as 'AI shopping information service' by the distribution industry. We present seven scenario related AI application refer from IBM suggestion, and the findings would enable the distribution industry to approach target consumers with their products, especially high value goods. 'Shopping advisor' is considered to the most effective. In order to apply to the other field of the distribution industry business, which utilizes AI technology, it should be accompanied by additional empirical data analysis should be undertaken.

• 한국도서관정보학회지
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• 제44권2호
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• pp.315-343
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• 2013

공공저작물은 국민의 세금에 의해 작성된 것이므로, 공공의 이익을 위해 민간의 무상의 자유로운 접근 및 이용이 보장되어야 한다. 이를 위해서는 무엇보다도 저작권 처리 문제를 해결할 수 있는 법률적 근거가 마련되어야 한다. 이에 본 연구는 공공저작물의 법적 개념과 공공기관의 개념 및 범위에 대해 검토하였다. 공공저작물의 저작권 보호를 제한하는 입법사례로 미국, 영국 및 독일의 저작권법 관련 규정과 최근에 입법 예고된 개정안들을 분석하였고, 이어서 공공저작물과 관련한 국내 현행 저작권법상의 저작권 보호의 제한 규정 및 저작권법 일부개정안을 상세히 분석하였다. 이러한 분석 결과에 기초하여, 본 연구는 도서관에서의 공공저작물의 이용 활성화를 위하여 저작권 제한을 큰 폭으로 확대하는 법률개정안을 제시하였다.

• 한국초등과학교육학회지:초등과학교육
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• 제32권4호
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• pp.473-484
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• 2013

The purpose of this study was to develop science and art integrated program to improve the creativity of scientifically gifted elementary school students. This study was to develop science and art integrated program to enhance the creativity of these subjects. This program was consisted of 30 lessons covering 10 topics. It was developed of five stages including the observation stage reflecting the characteristics of the right hemisphere relevant to creativity, the interest and curiosity stage, the experiment design and performing stage, the internalization stage, and the stage of expressing arts. This program was applied to 20 senior gifted students in Y Elementary School in Gyeonggi province. Torrance Tests of Creative Thinking(TTCT) was used in order to investigate and measure the effectiveness of the program before and after its use in class. The results of this study are as follows: First, this program showed results of significant improvement of creativity of scientifically gifted elementary school students after its use in class(p<.05). Second, it was significantly effective in increasing their creativity, especially in the subdomains such as originality, abstractness of title, and territory of resistance on hasty conclusions after its use in class(p<.05). Third, it was significantly effective to increase the Creativity Index that represents creative potential(p<.01). In particular, emotional expression, internalized visualization, unique visualization, and richness of the imagery emerged. This study implies that the science and art integrated program was closely related to the right hemisphere of the features enabling the subjects to create new ideas, new things, and new reactions. In addition, this program is expected to contribute to activate the brain areas of creativity for gifted students in the science field.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 춘계학술발표회 논문집(I)
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• pp.5-21
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• 2006

Traditional standards and specifications for concrete have largely been prescriptive, (or prescription-based), and can sometimes hinder innovation and in particular the use of more environmentally friendly concretes by requiring minimum cement contents and SCM replacement levels. In December 2004, the Canadian CSA A23.1-04 standard was issued which made provisions (a) for high-volume SCM concretes, (b) added new performance requirements for concrete, and (c) clearly outlined the requirements and responsibilities for use in performance-based concrete specifications. Also, in December 2003, the CSA A3000 Hydraulic Cement standard was revised. It (a) reclassified the types of cements based on performance requirements, with both Portland and blended cements meeting the same physical requirements, (b) allows the use of performance testing for assessing sulphate resistance of cementitious materials combinations, (c) includes an Annex D, which allows performance testing of new or non-traditional supplementary cementing materials. From a review of international concrete standards, it was found that one of the main concerns with performance specifications has been the lack of tests, or lack of confidence in existing tests, for judging all relevant performance concerns. Of currently used or available test methods for both fresh, hardened physical, and durability properties, it was found that although there may be no ideal testing solutions, there are a number of practical and useful tests available. Some of these were adopted in CSA A23.1-04, and it is likely that new performance tests will be added in future revisions. Other concerns with performance standards are the different perspectives on the point of testing for performance. Some concrete suppliers may prefer processes for both pre-qualifying the plant, and specific mixtures, followed only with testing only 'end-of-chute' fresh properties on-site. However, owners want to know the in-place performance of the concrete, especially with high-volume SCM concretes where placing and curing are important. Also, the contractor must be aware of, and share the responsibility for handling, constructability, curing, and scheduling issues that influence the in-place concrete properties.

• 한국정보시스템학회지:정보시스템연구
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• 제18권3호
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• pp.1-25
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• 2009

As many universities introduce e-Learning classes as formal courses, numerous research topics relating to c-Learning such as, defining e-Learning, identifying factors affecting successful e-Learning deployment and examining relationships between the factors in e-Learning classes need to be focused on. However, most researches thai have been undertaken only consider the positive side or right functional dimension. This can result in e-Learning dissemination at universities being overlooked. In accordance with this indispensability, the negative factors, which are potentially inherent in e-Learning learner's perception and affect personnel e-Learning acceptance in university classes need 10 be acknowledged. The purpose of this study was to identify the negative factors affecting personnel e-Learning acceptance and to analyze the interrelation among the factors in this research model. The two independent variables avoidable convenience and reliant convenience, based on pilot test results, and self-efficacy and perceived playfulness, based on the relevant literature, are used to examine the research model. The research problem was tested with data collected from 446 respondents in 12 universities. This study developed and empirically analyzed a model representing the relationship by using the Structural Equation Model. The major findings of this study are, firstly, that the higher reliant convenience is negatively affecting the degree of system use and learner satisfaction, whereas avoidable convenience is only affecting the learner satisfaction. Secondly, the higher self-efficacy and stronger perceived playfulness affects the degree of system use as well as learner satisfaction. Finally, the degree of system use affects the learner satisfaction.

• Strategy21
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• 통권41호
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• pp.153-173
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• 2017

On 15 December 2015, China seized an underwater drone belonging to the U.S. in the South China Sea. The underwater drone was then about to be retrieved by the Bowditch, a U.S. naval ship.Although China returned the underwater drone to the U.S. on 20 December 2016, the incident resulted in the considerable controversy involving the use of underwater drones. The reason for this is that the seizure of the underwater drone happened in the exclusive economic zone (hereafter referred to as "EEZ") of the Philippines. Part XIII of the United Nations Convention on the Law of the Sea (hereafter referred to as "UNCLOS") governs the matters of marine scientific research (hereafter referred to as "MSR"). If a State intends to use an underwater drone in the EEZ of another coastal State for the purpose of MSR, the former has to obtain the consent of the latter in accordance with relevant provisions included in Part XIII of the UNCLOS. However, it is not obvious whether the consent of a coastal State should be required to launch an underwater drone in the EEZ of the State for the purpose of hydrographic surveying or military surveying. Maritime powers such as the U.S. regard hydrographic surveying or military surveying as part of "other internationally lawful uses of the sea related to these freedoms, such as those associated with the operation of ships, aircraft and submarine cables and pipelines" found in Article 58(1) of the UNCLOS, or part of the freedom of the high seas. This interpretation is not incompatible with the implications that the UNCLOS has. Nevertheless, Korea cannot accept this kind of interpretation that is supported by maritime powers. The freedom of hydrographic surveying or military surveying could imply that the EEZ of Korea would be full of underwater drones launched by China, Japan or even Russia. Hence, Korea should claim that the data collected for the purpose of MSR cannot be distinguished from that collected for the purpose of hydrographic surveying or military surveying. This means that hydrographic surveying or military surveying without the consent of a coastal State in the EEZ of the State should not be permitted.