• Journal of The Korean Association For Science Education
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• v.36 no.2
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• pp.295-302
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• 2016

In this study, we investigated a learning progression focusing on $5^{th}$ to $9^{th}$ graders' performances with dissolution and solution concepts using the construct modeling approach. We designed a construct map describing hypothetical pathways of the concept development of dissolution and solution by analyzing both National Science Curricula and related studies. A conceptions test consisting of ordered multiple-choice items was developed and administered to 826 students. A revised construct map was derived from analyses of the results based on the partial credit model, a branch of polytomous item response theory. The sequence of dissolution and solution concepts presented in the current science curriculum was found to correspond with the learning progression of the students. However, the lower anchor, the concept of the homogeneity of particles in solution, and the factors affecting solubility were not consistent with the expected levels of the construct map. After revising the construct map, we proposed a learning progression for dissolution and solution concepts with five levels: Students of level 1 (the lower anchor) recognize the particles in the solution but misunderstand various concepts; Students of level 2 understand the homogeneity of particles in solution; Students of level 3 understand solubility and the conservation of particles during dissolution; Students of level 4 partially understand the interaction between particles; and Students of level 5 (the upper anchor) understand the interaction between particles and the factors affecting solubility.

• Korean journal of communication and information
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• v.38
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• pp.245-275
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• 2007

This study analyzes interactivity between formal policy and informal trade practices at outside production market of broadcasting production environment in Korea. For this, this study raises three topics. First, the trait of historical context of policy making at outside broadcasting production policy: Second, the trait and meaning of path dependency behavior in the process of trade practices between over-the-air TV Organization and independent production companies : Three, the meaning of interactivity between formal policy and informal trade practices at outside broadcasting production market. Major findings of this study are : the trait of policy making was concentrated on the quantitative rates of the outside production program. And, the trait of trade practices was unfair rivalry in accordance with the custom of insider dealing. The chief cause of the conflict structure of outside broadcasting production market is lacked in policy complement at the qualitative dimension.

• Journal of vocational education research
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• v.35 no.4
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• pp.89-107
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• 2016

The purpose of this study was to verify the causal relationship between self-directed learning ability and career maturity by Middle and High School Students in Seoul. This study used Seoul Education Longitudinal Study(SELS) data. Using autoregressive cross-lagged modeling, the results was followed. first, self-directed learning ability value was had a statistically significant positive effect in accordance with the time course from middle school 1st grade to high school 3rd grade. Second, career maturity also had a statistically significant positive effect in accordance with the time course from middle school 1st grade to high school 3rd grade. Third, previous self-directed learning ability had significant positive effect on the later career maturity, but the previous career maturity had no significant effect on later self-directed learning ability.

• Korean Business Review
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• v.5
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• pp.31-65
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• 1992

석탄산업은 서민생활보호와 에너지 안보 등 국가정책 목표달성을 위하여 매우 중요한 역할을 하고 있다. 또한 태백지역의 경우에는 석탄산업의 존립이 지역사회의 생존과 직결되고 있어서 이의 활성화가 매우 긴요하다. 그러나 석탄산업은 작업환경이 나쁘고 임금수준 등의 제반 여건이 좋지 않고, 사양산업이라는 인식이 만연되어 있는 관계로 근로자들의 이직율이 높고 신규인력의 유입율도 낮아서 탄광의 운영에 커다란 애로요인으로 등장하고 있다. 본 연구는 이러한 상황에 직면해 있는 태백지역 탄광업체의 인력난을 해결해 보기 위하여 탄광근로자들을 대상으로 설문지를 배포하고 이를 분석하여 그 해결책을 모색해 보고자 했다. 이를 위해서 경로분석과 이원분산분석을 통해서 이직요인을 발견하고 이를 위한 다각적인 대응방안을 구상해 보았다. 연구결과 태백지역 인력난을 완화시키고 노동인력의 정착성을 제고시키기 위해서는 1) 기업내적(企業內的)인 방안(方案)으로 근로생활의 보람(quality of working life) 조성, 기업문화의 조성, 임금제도의 개선과 생산성 향상, 후생복지시설의 개선, 내부적 제도의 개선과 회사운영의 공개, 대외적 홍보, 2) 정부(政府)의 지원방안(支援方案)과 논의사항(論議事項)으로 석탄산업에 대한 재정적 지원, 소비성 서비스업에 대한 노동력 유출억제, 교육여건의 개선 그리고 해외광원수입에 관한 문제는 장애요인이 많으므로 가능한 신중한 검토가 수반되어야 한다는 것 등을 고려할 수 있을 것으로 사료된다.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 1999.12a
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• pp.177-190
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• 1999

개방과 경쟁의 도입, 기술의 발달, 고객욕구의 다양화 및 고급화 등과 같은 제반 환경요인의 변화로 최근의 정보통신산업에서는 많은 변화가 야기되고 있다. 특히 별정통신이라는 이름으로 도입된 새로운 사업형태는 탄생상의 문제, 경험과 지식의 부족 및 상층되는 목표로 인하여 정착되어 가는 과정에서 문제와 불협화음이 발생하고 있다. 이러한 문제는 제도, 기능, 시장 그리고 사업자 관계라는 네가지 측면으로 집약될 수 있다. 이에 본 연구는 별정 2호 사업을 숭심으로 유통기능에 대한 검토 및 분석을 통해 유통구조 시스템의 전략적 설계 방향을 다음과 같이 제시하였다. 첫째, 기간통신사업자의 사내 유통망을 보완해주는 사외유통망을 설계함으로써 유통효율성과 마케팅 효과성을 동시에 제고해야 한다는 것이다. 둘째, 별정통신 유통경로 시스템을 발전적 마케팅 전략의 일환으로 통신서비스 제공이라는 단순한 차원을 뛰어넘어 고객생활의 질을 향상시키고 고객의 성공을 가져오는 폭넓고 고차원적인 개념으로 확대하여야 할 것이다. 이러한 기반 위에 통신사업에 대한 홍보활동을 강화하고 다양한 통신서비스를 제공할 수 있는 서비스 충실화를 기하여야 할 것이다. 셋째, 기간통신사업자가 강점을 갖고 있는 영역에 대해서는 기존의 직접마케팅을 활용하고, 약점을 가지고 있는 서비스나 기능에 대해서는 대체하거나 보완하는 역할을 별정사업자에게 부과함으로써 전체 서비스 제공 시스템의 목적을 달성할 수 있을 것이다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.17-18
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• 2023

Since March 15, 2022, the korea coast guard has revised the qualification standards for VTSO so that they can take the VTSO recruitment test under the korea coast guard without boarding experience to diversify their recruitment routes. By this study, we looked into VTS working circumstances and reviewed important provisions about enactment and revision of VTS regulations and VTS certificate system so far to compare and analyze pros and cons of each control task performance method by illustrations which are occasions in both home and foreign control operation. And also, I suggest ways to improve VTSO task in future make a VTSO credential demonstration system settle down successfully.

• Journal of The Korean Association For Science Education
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• v.38 no.4
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• pp.481-494
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• 2018

This study investigated elementary students' understanding of Earth revolution and its accompanied apparent motion of constellation in terms of spatial reasoning. We designed a set of multi-tiered constructed response items in which students described their own idea about the reason of consecutive movement of constellations for three months and drew a diagram about relative locations of the Sun, the Earth, and the constellations. Sixty-five sixth grade students from four elementary schools participated in the tests both before and after science classes on the relative movement of Earth and Moon. Their answers to the items were categorized inductively in terms of transforming frames of reference which are observed on the Earth and designed from the Space-based perspective. We analyzed those categories by the levels of spatial reasoning and depicted the change of students' levels between pre/post-tests so that we could get an idea on the preliminary developmental pathway of students' understanding of this topic. The lower anchor description was that constellations move around the Earth with geocentric perspective. Intermediate level descriptions were planar understanding of Earth movement, intuitive idea on constellation movement along with the Earth. Students with intermediate levels did not reach understanding of the apparent motion of constellations. As the upper anchor description students understood the apparent motion of constellations according to the Earth revolution and could transform their frames of reference between Earth-based view and Space-based view. The features as the case of evolutionary learning progressions and critical points of students' development for this topic were discussed.

• Journal of the Korean earth science society
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• v.39 no.3
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• pp.260-274
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• 2018

The purpose of this study was to propose curriculum and teaching sequence for seasonal change by exploring a learning progression. For the purpose, 4 steps of construct modeling approach (specifying construct, item design, outcome space, and measurement model) proposed by Wilson (2005) was applied. In the stage of specifying construct, 'length of shadow according to seasons', 'position of constellation according to seasons', 'seasons of the southern hemisphere and northern hemisphere', 'cause and phenomenon of seasonal change' were selected as the subconstructs of seasonal changes, and constructed a construct map showing the level of development from level 1 to level 4 for each subconstruct based on the results of the previous research. In the item design stage, we developed five assessment items consisting of 3 items in the form of C-E (choose and explain) and two items in the form of CR (constructed response), applied it to 383 elementary, middle and high school students. In the outcome space stage, the students' responses to the assessment items were categorized based on the construct map. The categories were classified into 4 levels according to student ability and scores of 1-4 were given. In the measurement model stage, we applied the partial credit model of the Rasch model and compared whether the learning pathway created from the results of students' response coincides with the construct map. Based on the results of the research, we modified the construct map and finally created hypothetical learning progression on seasonal change. Finally, we proposed an orientation of curriculum amendment and effective teaching sequence for seasonal change.

• The Korean Journal of Franchise Management
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• v.3 no.2
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• pp.39-54
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• 2012

Franchise system in Korea has been developed in different way compared with American way of franchising based on mutual contract and intellectual property context. Korean franchising is mostly based on product distribution franchise concept rather than business format franchise in which franchisor makes revenue sources from providing their products as much as possible thru group purchasing and logistics rather than receiving royalty. Many franchise enterprises from Korea drive to enter into global franchise market based on the successful performance of Korean way of franchising. Korean enterprises are required to prepare completely for research and survey regarding local culture, custom, way of life and legal matters etc. when entering into global franchise market to gain a substantial performance. CaffeBene recently entered into American franchise business with success, and many other Korean franchise enterprises have a deep interest in proceeding with global franchise business modeling CaffeBene case. There is no Korean franchise enterprise in United Kingdom in which service franchise area in particular with personal service is considered to become a promising and potential franchise business and many people show a great interest in Oriental foods and beverages with well-being trend. Korean franchise enterprises have now access to United Kingdom easier because IT industry including internet of the country have been developed by leaps and bounds since London Olympic in 2012. The purpose of this study is to suggest key success factors and basic strategy such as situation analysis, selecting business format, and marketing strategy for successful launching of franchise business in United Kingdom.

• Korean Journal of Environmental Agriculture
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• v.30 no.1
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• pp.68-75
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• 2011

BACKGROUND: To assess and prevent the environmental impacts and risks by veterinary pharmaceuticals, Guidance on Estimating Soil Persistence and Degradation Kinetics from Environmental Fate Studies on Veterinary Pharmaceuticals for Environmental Risk Assessment was proposed. METHODS AND RESULTS: Proposed guidance was coined by VICH, EU guideline, OECD guideline and soil dissipation studies for the purpose of international harmonizing. Guidance was also modified from pesticide soil persistence testing guidelines of US, EU, and Korea, with practical approaches adopting in-use test guideline for Korea. CONCLUSION(S): Proposed guidance are consisted of three parts; Laboratory Soil Experiment, Field Soil Dissipation Study, and Estimation of $DT_{50}/DT_{90}$. Proposed guidance is to be available for the requirement for registration of veterinary pharmaceuticals with fit for purpose in Korea.