• 여성건강간호학회지
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• 제10권2호
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• pp.109-118
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• 2004

Purpose: The purpose of this study was to develop a specialized education curriculum aimed at helping nurses prepare for running and managing a Maternal-Child Health Center (Postpartum Care Center). Method: This study was conducted by an academy and industry joint research group consisting of professors of Nursing, and nurses actually running a Postpartum Care Center. The group compiled job descriptions of nursing through document research, interviews and observation during site visits, surveys, and seminars. They then performed a feasibility study and developed the final curriculum. Result: The education curriculum is a 32-week(2semester) program compromised of a theory part (12 credits, 180 hours) covering maternal and infant care and business start-up and field practice (3 credits, 45 hours). Courses in the theory part include an antenatal care, overview and details of maternal care, starting a business and its management. Of these courses, the overview of a maternal care course was developed with web-based contents. Field practice is designed to give students opportunities to visit Postpartum Care Centers, observe the care provided, and get hands-on experience. Conclusion: The specialized education curriculum is a 32-week course comprised of 12 credits on theory of antenatal care, overview and details of maternal care, infant care, starting and operating a business and 3 credits of field practice.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권5호
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• pp.1984-2002
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• 2020

With the appearance of wireless spectrum crisis in traditional cellular network, device-to-device (D2D) communication has been regarded as a promising solution to ease heavy traffic burden by enabling precise content delivery among mobile users. However, due to the channel sharing, the interference between D2D and cellular users can affect the transmission rate and narrow the throughput in the network. In this paper, we firstly present a weighted interference minimization cluster formation model involving both social attribute and physical closeness. The weighted-interference, which is evaluated under the susceptible-infected(SI) model, is utilized to gather user in social and physical proximity. Then, we address the cluster formation problem via spectrum clustering with iterative operation. Finally, we propose the stable matching theory algorithm in order to maximize rate oriented to accomplish the one-to-one resource allocation. Numerical results show that our proposed scheme acquires quite well clustering effect and increases the accumulative transmission rate compared with the other two advanced schemes.

• Nuclear Engineering and Technology
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• 제49권8호
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• pp.1748-1751
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• 2017

Reduced activation ferritic/martensitic (RAFM) steels are widely applied as structural materials in the nuclear industry. To investigate hydrogen's effect on RAFM steels' elastic properties and the mechanism of that effect, a procedure of first principles simulation combined with experiment was designed. Density functional theory models were established to simulate RAFM steels' elastic status before and after hydrogen's insertion. Also, experiment was designed to measure the Young's modulus of RAFM steel samples with and without hydrogen charging. Both simulation and experiment showed that the solubility of hydrogen in RAFM steels would decrease the Young's modulus. The effect of hydrogen on RAFM steels' Young's modulus was more significant in water-quenched steels than it was in tempering steels. This indicated that defects inside martensite, considered to be hydrogen traps, could decrease the cohesive energy of the matrix and lead to a decrease of the Young's modulus after hydrogen insertion.

• 한국초등과학교육학회지:초등과학교육
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• 제27권2호
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• pp.158-169
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• 2008

The purpose of this study was to analyze the uses of the external representations in the $3{\sim}6th$ grade science textbooks developed under the 7th National Curriculum on the basis of the theories and the research results on learning with the multiple representations. The results showed that the frequencies of the macroscopic external representations were higher than those of the symbolic external representations. The external representations with drawing and/or writing, especially writing, were used more frequently than those without drawing and/or writing. However, the most of the external representations were rarely used according to the principles and/or the theories (e.g., personalization principle, dual coding theory, cognitive load theory, and social constructivism theory) for effective uses of the multiple external representations in the science textbooks. The present study provides the guideline to establish the effective uses of the external representations in the science textbooks that not only meet learners but also teachers.

• 한국세라믹학회지
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• 제54권5호
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• pp.443-447
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• 2017

The initial reaction of hexachlorodisilane ($Si_2Cl_6$, HCDS) on amorphous silica ($SiO_2$) surface for atomic layer deposition was investigated using density functional theory. Two representative reaction sites on the amorphous $SiO_2$ surface for HCDS reaction, a surface hydroxyl and a two-membered ring, were considered. The reaction energy barrier for HCDS on both sites was higher than its adsorption energy, indicating that it would desorb from the surface rather than react with the surface. At high temperature range, some HCDSs can have kinetic energy high enough to overcome the reaction energy barrier. The HCDS reaction on top of the reacted HCDS was investigated to confirm its self-limiting characteristics.

• 보건교육건강증진학회지
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• 제17권2호
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• pp.1-15
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• 2000

The purpose of this study is to analyse factors related to sex behavior and intention to premarital purity on the basis of theory of reasoned action. A structured Questionnaire was developed on the basis of Triandis model. Survey was conducted to 1662 unmarried person in high school students, college students, and workers. The results are as follows. For the factor of sexual behavior, male, older age had higher experience to sexual relationship, but for the factor of premarital purity, female and workers than student had higher consciousness of purity. Positive attitude to premarital purity, expectation toward preservation of purity, parental and social normative influence and facilitating factor such as experiences of sex education showed significant relationship to intention of premarital purity. Also multiple logistic regression showed that health behaviors such as smoking and drinking, sex and job were statistically significant factor for sex behavior. The result of this study suggest that educational program sex as well as good health behavior should developed and theory-based models in conducting health education research.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제24권3호
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• pp.627-658
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• 2010

접선의 개념은 수학에서 매우 중요하다. 그러나 대학생들조차 미분가능과 접선의 존재를 동일시하는 등 접선의 중요성과 개념에 대해 혼란스러워하고 있다. 이런 관점에서 본 논문에서는 선행연구를 창조하고 초, 중, 고교의 교과서와 교육과정을 분석하여 접선개념의 도입 등을 분석하고 Lakatos 이론과 GSP를 이용한 접선지도방법과 실제 학교현장에서 사용할 수 있는 학습지도안을 제시하고, 현장적용 및 교수실험결과를 소개한다.

• Journal of Electrical Engineering and Technology
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• 제13권1호
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• pp.11-19
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• 2018

With the development of smart grid technology, it has become a hotspot to increase benefits of both residential users and electric power companies through demand response technology and interactive technology. In this paper, the game theory is introduced to the interaction between residential users and an electric company, making a mutually beneficial situation for the two. This paper solves the problem of electricity pricing and load shifting in the interactive behavior by building the game-theoretic process, proposing the interaction strategy and doing the optimization. In the simulation results, the residential users decrease their cost by 11% mainly through shifting the thermal loads and the electric company improves its benefits by 5.6% though electricity pricing. Simulation analysis verifies the validity of the proposed method and shows great revenue for the economy of both sides.

• 공학교육연구
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• 제26권3호
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• pp.35-41
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• 2023

The study was conducted to develop two parallel short forms for the Convergent thinking and Problem solving questionnaires which are part of H University's core competency diagnostic tools, based on Multi-Item Response Theory. Item responses of 2,580 students were analyzed using Graded Response Model(GRM) to determine item difficulty and discrimination of each item. The research results are as follows. Two parrallel short tests were developed for the Convergent thinking questionnaire consisting of 12 items which were originally 17 items. Likewise, the Problem solving questionnaire, which originally consisted of 15 questions, was divided into two parallel short forms, each consisting of 9 items. The reliability of the shortened parallel tests was confirmed through internal consistency analysis, and their similarity to the original tests was established through correlation analysis. This study contributed to quality management of competency-based education and programs at H University by developing shortened tests. Based on the results, implications were presented as well as limitations and discussions.

• 의학교육논단
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• 제12권2호
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• pp.27-33
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• 2010

The purpose of this study was to review the definition of cognitive load (CL), the relationship between CL and instructional design, and to provide a viewpoint of CL in curriculum and instructional design in medical education. Cognitive load theory (CLT) makes use of three hypotheses about the structure of human memory: working memory (WM) is limited in terms of the amount of information it can hold, in contrast with WM, long term memory is assumed to have no limits and organizes information as schemata. CL indicates the mental load on the limitation of WM. CLT has been used to design instructional interventions that help to ease the learning process. Extraneous CL is related to irrelevant instructional interventions, while intrinsic CL is the complexity of the information itself. Germane CL is the cognitive process for acquiring schema formation. It is a necessary CL to achieve deeper comprehension and solve problems. The range of medical education includes complex, multifaceted and knowledge-rich domains with clinical skills and attitudes. Therefore, CLT may be used to guide instructional design in medical education in terms of decreasing extraneous CL, adjusting intrinsic CL and enhancing the germane CL.