• Journal of the Korean Society of Radiology
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• v.10 no.4
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• pp.247-253
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• 2016

Ultrasound devices diagnose many disease, which is widely used, can not be standardized quantitative evaluated in order to evaluate sonography image of quality. Therefore, in this papers, aims to get correct image in order to accurate diagnosis by figuring out the appropriate parameter based on each target by measuring distortion which results in the analyzation of the sensitivity of SNR and the histogram of signal by manipulating parameter of 8 mm target in ATS-539 multipurpose phantom. Equipment using Acuson sequoia 512, convex probe and utilizes multi-objective phantom. experiment method is that first you put the phantom on the flat and acquire 85 sheets of image, changing frequency(2,3,4 MHz, harmonic 3, 4, 4.5 MHz), Focus(2, 4, 6 unit), and Dynamic Range(58, 68, 78, 88, 98) for a 8 mm structure. through the Image J program. The sensitivity angle of 8mm target through Image J program is gauged by each separate target SNR and the distorted angle subtract and measure Histogram of background from Histogram of signal and take top 40% from the given result value above. According to parameter variation we found out proper parameter by acquiring SNR of sensitivity and distortion data for aspect of transition. The more this findings have Focus, the lower distortion value and at 4 MHz frequency this result have high SNR and low distortion value. Dynamic Range got an appropriate image on 88 and 98. It is considered on the basis of the experimental data, the probability of disease diagnosis will get higher.

• Journal of Korean Society on Water Environment
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• v.26 no.1
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• pp.1-9
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• 2010

Technology-Based Effluent Limitations (TBELs) is a permit limits for a pollutant that is based on the capability of a treatment technology to reduce the pollutant to a certain concentration. Widely practiced for regulations of industrial wastewater in US, TBELs has been accepted as an effective means that can achieve balanced goals between complete elimination of pollutants discharge and economic feasibility for industries. The review of TBELs application in US and the applicability of TBELs to the domestic industry categories was given in three papers. In the first paper, the development and practices of TBELs in US were reviewed including case studies. The developments of TBELs in US in the four major categories, the metal products & machinery, the petroleum refining, the porcelain enameling and the meat & poultry products were reviewed. The applicability of TBELs to the domestic industrial categories was also assessed. In the second paper, the pollution loads analysis for domestic industrial wastewater was conducted based on risk assessment indicator using Toxic Weighting Factors (TWFs). This is an essential part to determine the priority of TBELs application for the domestic industrial categories. In the last paper, the application of TBELs to the domestic industries was demonstrated through a case-study for the pulp/paper/paperboard category. Direct application of TBELs of US into the Korean regulation system may not be desirable because the specific goals and the environment for the regulations for the two countries may not be identical. For example, unlike US, Korea does not adopt the individual permit system for pollution sources. However, among the unproductive and exhaustive controversies over the uniform regulations regardless of the industrial categories in Korea, the introduction of the principles of TBELs are inevitable and more extensive study for applications of TBELs optimized for Korean regulation system will be necessary.

• Archives of design research
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• v.11
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• pp.22-29
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• 1995

I have to find standpoint of sight moulding of Chi I Sung Hwa(seven stars picture) analysis of graphic systems of a symbol sight native to our nation. And I will comprehend emotion of folkways by simple and graphic lines and colors in mathematical Grid of which ancestor had expressed in gauge moulding consciousness. This papers aim is to make a contribution to lead by on part of communication design. About structural analysis of pictorial graphic side. I) Mathematical thought of the Orient and space constitution are first basically the Orient expressed number notion of mathematics of unlimitedness and notion of zero so called space and empty second can analigize a diagonal expansion method by development of symmetry notion to basic the dual principle of the negative and positive by degrees development expressed space division method by direction notion. 2) About the proportion analysis it based the golden section globularity and in modern layout it takes vision center of position, after appointing the brow of sacred image of Chil Sung Hwa as center point of proportion and applied to the point proportion and so analigized the posibility of established. Rule in union of each elements and rule of forms about picture image. 3) Mathematical structure analysis to search a unified principle at the balanced arrangement and rule of forms it analigized the standard the rule of forms. it analigized the standard the rule of forms to body module of basic movement of protagonist and follower above basic forms of grid that is the basis of design system.

• Health Policy and Management
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• v.28 no.3
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• pp.195-196
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• 2018

The Korean Academy of Health Policy and Management (KAHPM) has shown remarkable achievements in the field of health policy and management in Korea for the last 30 years. The KAHPM consists of experts in various fields of health policy and management, and has been the leading academic discussion forum for health policy agendas of interest to the public. Health Policy and Management (HPM), the official journal of the KAHPM, published the first issue of volume 1 in October, 1991 and is publishing the second issue of volume 28 as of 2018. Currently, it is one of Korea' main journals in the field of health policy and management. HPM has published a special issue in commemoration of the 30th anniversary of the KAHPM. The HPM invited authors, including former presidents of the KAHPM and current board members, to write about main issues in health policy and management. Although the HPM tried to set up an invited author on all subjects in the health policy and management field, 19 papers are published, that completed the peer review process by August, 2018. The authors of the special issue of the 30th anniversary of the KAHPM include six former presidents, a senior professor, and 12 board members. The subjects of this issue are reform of the healthcare delivery system, health insurance and medical policy, reform of health system governance, the role of National Health Insurance Service (NHIS), the Korea Institute for Health and Social Affairs (KIHASA) and the National Evidence-based healthcare Collaborating Agency (NECA), ethical aspects of health policy change, regional disparities of healthcare, healthcare accreditation, new healthcare technology evaluation system, globalization of the healthcare industry, the epidemiological investigator system, the quarantine system, safety and disaster, and official development assistance. There are some remaining topics to deal with for the KAHPM: aged society, anti-smoking, non-infectious disease, suicide, healthcare resources, emergency medical care, out-of-pocket money, medical fee payment system, medical aid system, long-term care insurance, industrial accident compensation insurance, community-centered health welfare system, and central government and local government of health. The HPM will continue to publish review articles on the main topics in health policy and management. This is because the KAHPM, which has been the leading academic society of Korea's health policy and management for the last 30 years, feels responsible for continuing its mission for the next 30 years.

• Korean System Dynamics Review
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• v.1 no.2
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• pp.5-31
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• 2000

The summit meeting of the South North Korean leaders was a turning point in the relationships between the two countries. It was followed by the Red-Cross Meeting, Minister-Level Meeting, economic agreements, which have increased the relationship more colorful in both quantities and qualities. However, the half-century period for separation was too long to overcome all the problems by only one event. The two countries have quite different social systems; one politically strong person is governing the North, while many interest groups are involved in political decision making processes in the South. In short, it would take a long time to settle down all the problems residing between the two countries. A system dynamics model is developed to describe the long term dynamics of the relations between the South and North Koreas. As a first attempt, the model focuses only on the diplomatic meeting issues between the South and North. The model aggregates diplomatic issues into 5 categories; economic issues, security issues, infrastructure, cultural issues, and past problems. It assumes that there would not be any dramatic changes between the two countries. It is a conceptual model composed of around 200 variables, and should not be used as a forecast tool. However, it captures most of the logics discussed in the papers and conferences concerning the South and North Korea relations. Many sensitivity studies and Monte Carlo simulations have shown that the simulation results matches with mental models of experts; that is the model can be used as a learning tool or as a secondary opinion until the data required by the model is collected. In order to analyze the current situation, five scenarios are simulated and analyzed; the functional approach, the conditional approach, the balanced approach, the circumstantial approach, and the strategic approach. The functional approach represents that the South makes efforts in the area where the possibility of agreement is high for the next 10 years. The conditional approach is a scenario where the South impose all difficult issues as conditions for resolving other diplomatic issues. The balanced approach is resolving the five issues with the same priorities, while the circumstantial approach is resolving issues which seem to be resolved easily. Finally, another optimum approach has been seek using the system dynamics model developed. The optimum strategy (it is named as the strategic approach) was strikingly different from other four approaches. The optimum strategy is so complicated that no one could find it with mental model(or by just insights). Considering that the system dynamic model used to find the optimum is a simplifind (maybe over simplified) version of the reality, it is concluded that a well designed system dynamics model would be of great help to resolving the complicated diplomatic problems in any kind.

• Journal of Educational Research in Mathematics
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• v.25 no.1
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• pp.113-137
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• 2015

The objective of the present study is to systematically examine the effects of on the cognitive and affective domains of elementary, middle, and high school students by conducting a meta-analysis. To this end, this study selected 31 research papers that had analyzed the effects of applying, and performed a meta-analysis of the findings presented in each research paper. The results obtained from the meta-analysis are presented as follows. First, both the collaborative learning program and the peer tutoring program for underachieving students in math manifested an above average size of effect in the cognitive domain. In particular, the effect was the greatest at the elementary school level, and out of the two programs, peer tutoring was identified to have a sizable effect. Second, both programs displayed an above average size of effect in the affective domain, and peer tutoring was identified to have a higher effect than collaborative learning. In addition, when the programs were compared based on school levels, the size of effect was highest at the elementary school level followed by middle school and high school, in that order. When compared based on the criteria of the affective domain, self-efficacy in math, learners' attitude toward math, and learners' interest in math were identified to. Finally, this study presented suggestions for teaching underachieving students in math and conducting follow-up studies based on the analysis results.

• Journal of Digital Convergence
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• v.14 no.4
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• pp.55-68
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• 2016

Academic research of the social service delivery system is very limited. This paper checked on the status of research on current social service delivery system in order to explore new research and policy directions. Analysis study consisted of 79 pieces and the framework was divided into dimensional analysis, content analysis and analytical standards. Research on the papers of social service delivery systems showed from the initial stage of the policy discussion to the phase of the individual services. Summarizing the study is as follows. First, This studies confirmed that at this time the quality studies on social service delivery system is needed. Second, this indicates that right now, the government budget of social services and the data relating to social service agencies will be opened to the public for the expansion of social services studies. Third, to expand social services delivery systems research, it showed that social services demand forecasting research such as budget allocation, population characteristics, equality of public service and local information is needed. Finally, since the quality of service is reduced by the oversupply, the discussion of the entry regulations of social service providers is required.

• Journal of Korean Home Economics Education Association
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• v.15 no.2
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• pp.79-99
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• 2003

This study is designed to identify the goals of home economics education. starting from the needs for basic research to establish a theoretical framework in home economics and for the development of basic logics to strengthen the position of home economics education as a prerequisite course in a national curriculum. To this end. this article thoroughly studied curriculum documents prepared at the national level and curriculum papers reflecting research trends of home economics education. using the results as data to identify the theoretical goals of home economics education. The research results are as follows : First, home economics education should help students become independent members of society. on the basis of daily lives. Second, with respect to personal capability development. home economics education should help to identify and solve various life-related problems in a practical problem solving. Practical members of society should be able to maintain balance in family, job, and personal career, solving the aforementioned problems in a practical way. Third, home economics education should make contributions to promoting a creative family culture in which life styles tailored for personal needs are created (education for creative members of society). The theoretical results of the study should be verified in a critical manner, followed by quantitative research that will lead to agreement among experts as to the theoretical goals.

• Journal of Korea Port Economic Association
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• v.32 no.4
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• pp.89-107
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• 2016

It is a critical problem of the Busan container cargo market that serious competition between the north port terminal and the new port terminal is weakening port of Busan's competitiveness. To avoid this serious competition, Busan Port Authority(BPA) has executed a cargo-rate approval system from last year. However if Busan's container terminal operators do not accept this system, the execution performance will be insufficient. Therefore, the purpose of this study is to test the effect of cargo-rate approval in the Busan container cargo market. To attain this research purpose, the current situation was analyzed and the existing papers were investigated. Therefore, cargo-stabilizing factors were extracted and the moderated effect between these factors and cargo-rate approval was tested. The results are as follows. First, three cargo stabilizing factors-(market structure, market behavior, and BPA)-appear to have a strong positive impact on the stabilizing effect; however, the factors that are handled by the operators can not influence the stabilizing effect. In particular, market behavior factors, such as cargo-rate dumping restriction, contributed to stabilizing cargo market. Second, The results appear to have a strong positive impact on the moderated effect as well as the cargo-rate approval. These research results show that the execution of cargo-rate approval is important in stabilizing the cargo market. Therefore, stabilizing the cargo market will contrubute to improving the image and bargaining power of the Port of Busan.

• Journal of Digital Convergence
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• v.14 no.8
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• pp.19-36
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• 2016

The purpose of this study was to analyze domestic and overseas cases of flipped learning instructional design model and actual classes in K-12 Education, and find out educational implications in order to design effective flipped learning. Papers, 14 articles in domestic and international journals, were collected. As results of the analysis, first, flipped learning instructional model was presented as flipped learning that applied to ADDIE model and 8C model etc. Second, 'Activities before classroom' consisted of watching lecture videos, lecture notes etc. 'Activities during classroom' was checking prior learning in early stage, individual activities and cooperative activities in middle stage, and solving quizzes, reviewing in later stage. After class, students performed tasks and questions&answers. Third, in case of creating lecture video, they used application such as Screencast-o-matic, Explain Everything; In contrast, some cases utilized online web-sites such as YouTube or Phet. Fourth, positive results were shown in learners' academic achievement, motivation and learning attitude etc. This research has a significance in terms of analyzing the flipped learning instructional model and flipped learning activities, and providing the preliminary data to facilitate the design for the effective flipped learning.