• The Journal of Korean Institute of Communications and Information Sciences
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• v.26 no.12C
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• pp.280-291
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• 2001

LL (Leased Line service) is a facility-based service as a traditional business data service, but new competition services, such as FR (Frame Relay), VPN (Virtual Private Network), and ATM (Asynchronous Transfer Mode), are value-added services. Because of different service classifications, it is hard to gather necessary data for the service providers to plan their market strategies and regulations and policies are also applied asymmetrically to each service provider. Therefore an appropriate market classification is required for the business data services. After various methods of market classification are reviewed, the Hendry model is selected in this paper to analyze substitution-degree among brands or among services. Since the structure of virtual competitions is required for the Hendry model to be applied to data service market, the market is analyzed first by the well-known Porter's model. By the analysis of Porter's model, two virtual competition structures are set up - one is for the competitions among leased line service providers, and the other is for the competitions among business data services such as LL, FR, VPN and ATM. After the Hendry model is applied to each competition structure, it is confirmed that 7 LL service providers do not compete directly, but 2 sub-markets exist for the LL service provisions. However, it is shown that 4 business data services compete directly. Using the Switching Probability Matrix from Hendry model, future market shares of LL service providers and market shares of business data services are forecasted. These empirical results are helpful for service providers to set competitive strategies with the minimization of cannibalization effect and they can easily and efficiently predict their market demands.

• Journal of Navigation and Port Research
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• v.42 no.3
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• pp.151-158
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• 2018

Students from the Maritime universities enrolled themselves into one year navigational training, according to The International Convention on Standards of Training, Certification and Watchkeeping for Seafarer(STCW). The purpose of this paper is to analyze if the students demonstrate improvements and accomplishments while they participate in their practical training. The subjects are third year students of the Korea Maritime and Ocean University who were onboard the Training Ship of the University. The purpose of this paper is to cover the degree of improvement by training, based on the core competency of officers. We also present the basic data for the efficiency in the curriculum of the practical training course for the school. As a result of the research, most of the students showed high improvements in their core competency subjects at the end of their one-year training. However, subjects such as cargo management and protection of the maritime environment resulted in below average results. These were some of the areas that needed improvement.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.05a
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• pp.548-549
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• 2015

무인 잠수정은 자율 무인잠수정(이하 'AUV' 또는 '자율무인잠수정'을 혼용)과 원격조정잠수정(이하 'ROV'로 지칭)으로 분류를 할 수 있다. ROV는 테더 게이블로 인한 작업 범위의 한계와 운동성능 효율이 떨어지는 단점을 지니고 있어, 테더 케이블이 필요 없는 AUV에 대한 필요성이 증대되고 있다. 추측 항법 시스템인 관성 항법 시스템(inertial navigation system, 이하 'INS'로 지칭)은 외부 도움없이 관성측정 장치(inertial measurement unit, 이하 'IMU'로 지칭)를 활용하여 구성된 시스템을 말한다. IMU는 자이로 스코프(gyroscope), 가속도계(accelerometer), 지자기(magnetic)센서로 구성된 측정 장치로 3개의 센서를 사용하여 상호 보정을 통한 기동 체의 위치, 속도 및 자세 정보를 제공한다. 복합항법시스템은 추측항법시스템이 가지는 누적오차와 측위 항법시스템이 가지는 외부환경에 대한 단점을 상호 보완하는 방법으로 연구가 진행 중이다. 하지만 심해서 또는 해양의 특성에 따라 측위 시스템이 사용되지 못하기 때문에 추측 항법시스템의 다양한 관성 센서를 활용한 상로 보완과 신호처리 방법을 통한 연구 개발이 진행 중이다. 다양한 센서 정보를 통합하는 목적으로 칼만 필터와 같은 최적 필터기법이 보편적으로 사용되고 있다. 칼만 필터는 확률 선형 시스템에 대하여 공정잡음 및 측정 잡음이 가우시안 확률 분포를 따를 때 최적의 추정자가 된다. 또한 가우시안 조건을 만족하지 않는 경우에도 선형 추정자 중에 추정 오차의 분산이 가장 작은 추정자이다. 칼만 필터가 최상의 성능을 발휘 하려면 공정잡음과 측정 잡음의 실제 값을 정확히 알아내는 것이 중요하다. 잡음 수준에 대한 정보가 부정확 할 경우 칼만 필터는 발산 할 수 있기 때문에 시스템에서 잡음 수준의 공산은 칼만 필터의 최적 이득을 결정하는 중요한 요소로 추정치에 큰 영향을 준다. 따라서 칼만 필터를 추측항법시스템에 적용 시킬 경우 실제 모텔의 잡음 공분산을 정확히 추정할 수 있는 기법이 요구된다. 추측항법시스템은 다양한 센서를 활용하기 때문에 움직이는 기동 표적에 적용시 잡음공분상이 변하기 때문에 항법시스템이 저하 될 수 있다. 본 연구에서는 다양한 센서를 융합하여 해양 생체 로봇의 정밀 자세 제어가 가능한 시스템을 제안하고자 한다.

• Korean Journal of Health Education and Promotion
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• v.12 no.1
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• pp.128-150
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• 1995

본 연구의 목적은 중학생의 보건교육에 대한 요구도를 살피기 위해 먼저 현재 자신이 알고 있는 보건지식에 대한 만족도와 보건교육에 대한 필요도 및 이에 영향을 미치는 요인에 대해 알아보고, 이와 관련하여 보건지식에 대한 만족도와 보건교육에 대한 필요도가 보건교육 요구도에 미치는 영향을 분석해 보는 데 있다. 연구를 위한 조사대상으로 경기도 소재 M, S 중학교의 1,2학년 전체 학생 688명을 선정하였고, 1994년 12월 1일부터 15일까지 자기기입식 설문지를 통해 보건교육에 대한 요구도를 조사하였다. 본 연구의 결과는 다음과 같다. 1. 조사대상자의 분포는 남학생이 59.3%, 여학생이 40.7%였고, 자신의 건강상태에 대해 건강하다고 응답한 학생이 78.9%, 건강하지 않다고 응답한 학생이 21.1%였다. 또한 현재 알고 있는 보건지식에 대해 만족한다고 응답한 학생은 68.2%였고, 31.8%의 학생이 만족하지 않는다고 응답하였다. 보건교육에 대한 필요도에 대해서는 92.7%의 학생이 필요하다고 응답하였다. 2. 보건교육에 대한 요구도에서는 첫째, 보건교과설정에 대해 45.6%가 찬성하였고, 둘째, 보건교육 실시시기에 대해서는 82.8%가 유치원 및 국민학교에서부터 시작되어야 한다고 하였다. 셋째, 보건교육의 적정시간에 대해 82.4%가 1주일 또는 1달에 1-2시간이라고 하였으며, 넷째, 보건교육 담당교사에 대해서는 63.2%가 보건교육 전문가가 담당하여야 한다고 응답하였다. 다섯째, 보건교육 내용에 대한 선호도 순위는 구급처치, 안전교육, 영양, 환경, 음주와 흡연 및 약물남용, 구강보건, 개인위생, 식품위생, 전염병관리, 성교육, 건강과 운동, 정신건강, 비전염성질환 관리, 공중보건, 의료기관의 기능 순이었다. 3. 현재 알고 있는 보건지식에 대한 만족도에 영향을 미치는 변수로는 성(p<0.01). 형제순위(p<0.05), 아버지의 학력(p<0.01), 어머니의 학력(p<0.01), 학업성적(p<0.05)이었으며, 보건교육 필요도에 영향을 미치는 변수는 성(p<0.05), 어머니의 학력(p<0.05), 학업성적(p<0.01)이었다. 4. 현재 알고 있는 보건지식에 대한 만족도에 따라 보건교육에 대한 요구도에 차이가 나타났다. 보건지식에 대해 만족하고 있지 못한 비만족군의 경우 보건교과의 설정에 대해 만족군보다 더 적극적으로 찬성하였고(p<0.05), 보건교육의 실시 시기에 대해서는 유치원 시기부터가 적정하다고 응답하였다(p>0.01). 보건교육의 내용선정에 있어서도 만족군과 비만족군간의 차이가 나타났는데, 만족군의 경우는 안전교육, 건강과 운동, 공중보건, 비만족군의 경우는 성교육을 요구하였다(p<0.05). 5. 보건교육에 대한 필요도에 따라 보건교육에 대한 요구도에 차이가 나타났다. 보건교육이 필요하다고 응답한 필요군의 경우 보건교과의 설정에 대해 적극적으로 찬성하였다(p<0.01). 또한 필요군은 보건교육의 실시 시기에 대해 유치원 시기부터가 적정하다고 응답한 반면, 보건교육이 필요하지 않다고 한 비필요군의 경우는 중학교 이후부터 적정하다고 응답하였다(p<0,01). 보건교육의 내용선정에 있어서도 음주와 흡연 및 약물남용, 식품위생, 건강과 운동, 비전염성질환 예방을 제외한 내용에서 필요군과 비필요군간의 차이가 나타났다(p<0.05).

• Journal of the Korea Convergence Society
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• v.9 no.6
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• pp.77-88
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• 2018

"Standard Precautions" (SP) is important for nursing students as it will lead to the protection of health professionals from infectious diseases and prevention of the wide spread of epidemic illnesses. Therefore, this study investigated factors influencing nursing students' attitudes toward SP. Data were collected from 291 nursing students from May to June, in 2016. According to the results, perceived benefit (4.26) was the highest among sub factors of the health belief model, test score of SP was 78.8%, and attitude score (4 point scale) was 3.63. Perceived sensitivity, perceived benefits, perceived barriers, self-efficacy, knowledge about SP showed significant correlations with the attitudes towards SP. Among sub-factors of the health beliefs, perceived sensitivity (${\beta}=.152$, p<.05) and perceived barrier (${\beta}=-.125$, p<.05) were found to influence nursing students' attitudes toward SP (F= 5.680, p<.001). Hence, it can be concluded that a convergence education program promoting health belief is needed for improving attitudes toward SP among nursing students.

• Journal of The Korean Association For Science Education
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• v.35 no.3
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• pp.455-463
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• 2015

Korea received foreign aid for science education in 1960-70, now, Korea is one of the most advanced countries in the world and provides not only official development assistance through government grants or ODA but also private aids through voluntary services to less developed countries. Korean science teachers have been offering voluntary services in Timor-Leste since 2004, starting on personal level and now by through the Korean Science Teachers Association. This study aims to describe the voluntary activity by Korean science teachers in Timor-Leste, to analyze the conflict points revealed in the activity, and to search the meaning of the activity in respect of science education. This study used methods like document analysis, interview of the participants, participants' observation, a case study, and member check. This activity has involved various conflicts in finance, curriculum, pedagogy, educational instrument, environment, language, chronological issues, and perceptions. This activity was not a one-sided offer of aid, but an opportunity for personal development and self-reflection, and a basis for discussion on science education. There are many difficulties in this work, which is carried out at the teachers' own expense. More concern should be paid on this volunteer service from educational institutions and academic world.

• Culinary science and hospitality research
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• v.17 no.4
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• pp.59-73
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• 2011

The purpose of this study is to establish a marketing strategy for the makgeolli manufacturing industry. We fractionized cousumer types depending on motives for purchase of customers who had bought makeolli or drunk it for the last six months. We also examined the relationship between makgeolli selection attributes and customer satisfaction by the cousumer types. SPSS 15.0 statistical package was used to process data. Frequency analysis, factor analysis, a reliability test, K-means cluster analysis, one-way ANOVA, and multiple regression were executed. As a result, the motives to purchase and drink were divided into four factors - marketing, effect on health, self-desires, outside environment; consumers into three types - dependent type, loving type, indifferent type; makgeolli selection attributes into five factors - health characteristics, visual elements, brand characteristics, drinking characteristics, purchase characteristics. It was shown that the makgeolli loving type considered all the makgeolli selection attributes as most important; the dependent type considered the health characteristics and visual elements as less important than the loving type did. The indifferent type considered all the makgeolli selection attributes as less important compared with the other types. Among the makgeolli selection attributes, drinking characteristics and the purchase characteristics had effects on customer satisfaction.

• The Korean Journal of Elementary Counseling
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• v.8 no.1
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• pp.51-66
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• 2009

This study aims at examining how it becomes to change the interpersonal cognitive problem solving ability development of elementary rejected children when teacher practices counseling strategy in classroom To do this, 130 fifth-graders of 4 classrooms from H Elementary School in B City went through Ahn Ie-hwan's(2007) social status type system by using the peer nomination, Then, 21 children were labeled as rejected children. Among them, 16 children were divided into experimental group & control group, 8 for the each group. In order to improve the interpersonal cognitive problem solving ability of rejected children with teacher's counseling strategy in classroom used in this study, 5 weeks activity made according to the level of classroom was carried out in four sides, that is, setting of classroom structure-environments, classroom activities, counseling activities, cooperative learning method, referring to Dreikurs'(1971) 'The counseling strategy in classroom' composed of self-discipline, cooperation, mutual respect, shared responsibility, and social equality. This study obtained the following results. First, There was a significant effect in improving the interpersonal cognitive problem solving ability of rejected children. Looking into sub-factors, there was a significant effect in improving consequential thought and method-ends thought except alternative solution thought and causal thought. Second, there was a significant difference in social status & change of 5 types of children in social status in the respective classrooms when those of the experimental group where teacher's counseling strategy in classroom carried out and those of the control group where teacher's counseling strategy in classroom not carried out were compared. To conclude the results mentioned above, We can see the fact that the counseling strategy in classroom positively affected interpersonal cognitive problem solving ability.

• Korean Journal of Social Welfare
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• v.57 no.1
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• pp.121-146
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• 2005

The purpose of this paper is to analyze the structure and characteristics of the utilization support systems(USS), which has been institutionalized to aid the use of social welfare services in Japan's social welfare systems recently. In order to conduct such purposes, this paper made the process as follows. Firstly, this paper examined the developmental processes of social welfare systems, and the back ground of institutionalization of USS in Japan. Secondly, this paper formulated at ideal dimension the analytic model which was to explain the structure and characteristics of the USS. To build this model, this paper used two factors which were the connective dependency to the welfare support systems and the feasible-satisfying alternative setting for user. Thirdly, this paper analyzed the characteristics of the user-driven support facilities which has already activated in social welfare systems in Japan. According to the result of analyzing such model, this paper explained that USS in Japan has possessed the structure and characteristics, such as to aid self actualization and human right of user, to compose the inner coalition organization with supply systems, to emphasize the employee to train care management's skill, and to keep up bounded openness to USS's participation. Therefore, oligopoly market is formulated owing to bounded openness in the field of USS and the role of social worker such as a care manager is emphasized on making care plan.

• Korean Journal of Social Welfare
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• v.67 no.3
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• pp.107-124
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• 2015

This study started from ideas on lack of discussion regarding age integration emphasized as an alternative paradigm for aged society and exclusion of policy target from discussion on age integration. This study analyzed potentiality of age integration through comparing the perception on impacts of age integration between policy target and professional. Results showed that policy target perceived social and individual effects of age integration more sceptically than professional. Also, policy target reported higher levels of agreement on development of age friendly environment and increase in social contribution by the aged as social impacts of age integration. Otherwise policy target, professional showed higher levels of agreement on enhancement of social solidarity and increase in mutual understanding among generations. In perception on individual impacts of age integration, policy target differed from professional by emphasizing extension of self-determination and self-autonomy. Lastly, group membership of policy target or professional significantly determined levels of agreement on positive impacts of age integration.