• Journal of Radiation Protection and Research
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• v.44 no.1
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• pp.32-42
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• 2019

Background: There have been much efforts to develop the proper and realistic machine Quality Assurance (QA) reflecting on real Volumetric Modulated Arc Therapy (VMAT) plan. In this work we propose and test a special VMAT plan of plan-class specific (pcsr) QA, as a machine QA so that it might be a good solution to supplement weak point of present machine QA to make it more realistic for VMAT treatment. Materials and Methods: We divided human body into 5 treatment sites: brain, head and neck, chest, abdomen, and pelvis. One plan for each treatment site was selected from real VMAT cases and contours were mapped into the computational human phantom where the same plan as real VMAT plan was created and called plan-class specific reference (pcsr) QA plan. We delivered this pcsr QA plan on a daily basis over the full research period and tracked how much MLC movement and dosimetric error occurred in regular delivery. Several real patients under treatments were also tracked to test the usefulness of pcsr QA through comparisons between them. We used dynalog file viewer (DFV) and Dynalog file to analyze position and speed of individual MLC leaf. The gamma pass rate from portal dosimetry for different gamma criteria was analyzed to evaluate analyze dosimetric accuracy. Results and Discussion: The maxRMS of MLC position error for all plans were all within the tolerance limit of < 0.35 cm and the positional variation of maxPEs for both pcsr and real plans were observed very stable over the research session. Daily variations of maxRMS of MLC speed error and gamma pass rate for real VMAT plans were observed very comparable to those in their pcsr plans in good acceptable fluctuation. Conclusion: We believe that the newly proposed pcsr QA would be useful and helpful to predict the mid-term quality of real VMAT treatment delivery.

• Journal of the Society of Disaster Information
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• v.15 no.1
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• pp.28-38
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• 2019

Purpose: The purpose of this study is to contribute to improvement of measurement management level of construction structure and technology development of monitoring sensor by presenting the detailed causes and improvement plans of construction monitoring sensor's decline in durability. Method: The causes and improvement plans of the durability degradation of the construction monitoring sensor were divided into the construction field and the electric, electronic field. The detailed status was reviewed. Results: In the field of construction, approval and inspection, inspection and testing, verification and calibration, and minimization of loss and damage ratio were reviewed. In the field of electric and electronics, sensor package and sealing, disconnection of stress concentration area, damage caused by lightning and corrosion were reviewed. Conclusion: It is expected that the durability of monitoring sensors applied to the construction site will become longer than the present status based on the study that analyzed causes and improvement plans of construction monitoring sensor's decline in durability in the field of construction and electric, electronic devices.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.35 no.1
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• pp.139-147
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• 2019

The purpose of this paper is to analyze the linkage between Si-Jeong-Chon (municipalities of Japan) catastrophic disaster recovery-regeneration plan (DRRP) and regional comprehensive plan (RCP), each of which was made after the Great East Japan Earthquake, and to make implications on establishment of a disaster recovery plan of Korea. In order to explore the relationship between the two plans, the DRRPs and RCPs of 30 municipalities are collected and categorized according to their characteristics. The results show that DRRPs of the municipalities are not always in a consistent form and contents because regulations and guidelines on DRRP are not definite and specific. The relationship between DRRP and RCP in terms of its form and contents can be divided into 3 categories; Reflective Type (RT), Complementary Type (CT), and Substitutive Type (ST). The 22 RT plans as the majority of those DRRPs appear to reflect the development strategies of municipalities' RCPs. Both 3 CT plans and 5 ST plans seem to be integrated with RCPs in some way. The plan in CT of a municipality supplements its RCP by adding some new strategies to its recovery section and the plan in ST of a municipality appears to replace its RCP. Finally the influential factors which are considered to determine linkage type are identified as remaining time which is legally required to re-establish its RCP, the extent of damage, and socioeconomic condition changes.

• Journal of the Korea Convergence Society
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• v.12 no.2
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• pp.287-294
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• 2021

The purpose of this study is to type the necessary support services related to the employment of the elderly and to identify in-depth the relationship between the type of support services related to the employment of the elderly and factors that determine employment plans. Data provided by 182 small and medium-sized owners in Seoul A area were analyzed using latent profile analysis and logistic regression. As a result of the analysis, first, it was confirmed that the number of workers and the employment of the elderly were the factors that increased the probability of the elderly employment plans. Second, it was found that the "high-level group of necessary support services" is more likely to have plans to hire the elderly compared to other groups. Based on the results of the study, we would like to provide basic data regarding the direction of government support needed by private businesses to hire the elderly.

• Journal of Environmental Impact Assessment
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• v.30 no.1
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• pp.24-34
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• 2021

Many countries have established and implemented marine ecosystem management plans to solve various problems arising from excessive development and use of marine and coastal areas. In this study, network analysis was applied to compare and understand marine ecosystem management's direction and characteristics in Korea and other maritime countries. The results showed that the words 'strengthen,' 'promote,' 'improve,' and 'establish' were the keywords used a lot in domestic and foreign marine ecosystem management plans. Establishing a foundation for marine ecosystem management, establishing international cooperation and partnerships, and strengthening climate change adaptation was commonly included. However, there were some differences in detailed management plans. In foreign countries, it aims to present management measures for certain species and improve the existing institutional foundation. Still, in Korea, it aims to strengthen the comprehensive management of marine life and establish an institutional foundation for marine ecosystems. This study is expected to help understand the direction of domestic and overseas marine ecosystem management and establish a domestic marine ecosystem management plan in the future.

• Journal of Hospice and Palliative Care
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• v.24 no.1
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• pp.36-45
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• 2021

Purpose: This study examined the relationship between Knowledge of Life-sustaining Treatment Plans and Attitudes toward Withdrawal of Life-sustaining Treatment among nursing college students, and attempted to identify the mediating effect of Role Perception on Life-sustaining Treatment in that relationship. It is hoped that the findings will ultimately contribute to the development of active nursing strategies. Methods: The participants were 142 nursing college students in the third and fourth years of study who had experienced clinical practice at two universities in cities Y and C. Data were collected from November 1 to 30, 2019. For data analysis, SPSS for Windows version 22.0 was used to calculate descriptive statistics, the t-test, Pearson's correlation coefficients, and multiple regression. To analyze the mediating effect, the Baron and Kenny bootstrapping method was used. Results: Attitudes toward Withdrawal of Life-sustaining Treatment of nursing college students had a significant positive correlation with Knowledge of Life-sustaining Treatment Plans (r=0.34, P<0.001) and Role Perception on Life-sustaining Treatment (r=0.44, P<0.001). Role Perception on Life-sustaining Treatment partially mediated the relationship between Knowledge of Life-sustaining Treatment Plans and Attitudes toward Withdrawal of Life-sustaining Treatment (95% CI, 0.446~1.055). Conclusion: Based on the results of this study, improving nursing college students' Role Perception on Life-sustaining Treatment could be used as a coping strategy to establish positive Attitudes toward Withdrawal of Life-sustaining Treatment.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.22 no.4
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• pp.149-156
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• 2022

In the recent pandemic situation, importance of artificial intelligence has been highlighted and major countries are making efforts to secure leadership in AI technology. The Korean government has been continuously expanding government investment to secure technological competitiveness. Despite the importance of efficient operation strategies for government-supported projects, related discussions rarely existed. Therefore, this study aims to analyze the AI voucher support project, which is a representative government project in the AI field, and to suggest improvement plans. An interview with AI solution companies was conducted, and issues in the process of promoting AI voucher support projects were identified through content analysis. Based on the analysis results, improvement plans were presented in stages of project preparation, progression, termination, and follow-up management. This study has significance in suggesting improvement plans for the government support project for the successful growth of the AI industry at a time when the importance of AI is increasing.

• Journal of the Korean Society for information Management
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• v.39 no.3
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• pp.195-216
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• 2022

In this study, the author applied the service design methodology to the university library to maximize the service value provided by the university library. To this end, the 'Double Diamond Model', a service design model, was applied to the university library, and service design tools such as Persona, Customer Journey Map, and Touch Points were utilized. To reflect on the service design in the university library, the author first reviewed the literature related to the subject and researched the previous studies. Then, the issue was discovered by questionnaire surveys, interviews with users and librarians, and field investigations. Based on this, Persona and situation scenarios were derived. In addition, after synthesizing Persona's situational behavior and user's emotional change, the study visualized the Customer Journey Map and suggested service improvement plans for 11 items in 3 areas. This study is focused on the process of deriving service improvement plans rather than improving a specific service. The purpose of this study was to improve university library service and to suggest new service plans. The significance of this study is that the practical service improvement plans were applied to the university library.

• Journal of the Korea Society for Simulation
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• v.19 no.1
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• pp.1-11
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• 2010

K company produces semiconductor package products under the make-to-order policy to supply for domestic and foreign semiconductor manufacturing companies. Its production process is a machine-paced assembly line type, which consists of die sawing, assembly, and test. This paper suggests three plans to increase process throughput based on the process analysis of K company and evaluates them via a simulation model using a real data collected. The three plans are line balancing by adding machines to the bottleneck process, product group scheduling, and reallocation of the operators in non-bottleneck processes. The evaluation result shows the highest daily throughput increase of 17.3% with an effect of 2.8% reduction of due date violation when the three plans are applied together. Payback period for the mixed application of the three plans is obtained as 1.37 years.

• Journal of Korean Society of Rural Planning
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• v.29 no.3
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• pp.91-97
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• 2023

The purpose of this research is to apply the regional development attractiveness of the national level determined in the previous study to the city and county level of Chungcheongnam-do. We verified results with the population change of the floating population data. In order to measure regional development attractiveness in 2020, Chungcheongnam-do's integrated air environment index and per capita gross regional product were gathered. Population movement data over the past five years have been used to analyze population changes in the floating population data. Regional development attractiveness depended on the data of GDP per capita, which had a large difference between the maximum and minimum values. The rate of increase or decrease in population change by city and county in Chungcheongnam-do over the past five years has changed significantly since 2021 and characteristics of each group were grouped into four groups. Based on the environment and economic feasibility of the region, it can be the starting point for a new analysis of Korea's regional development projects and the selection of target sites. Policy suggestions can also be made in spatial plans such as short-term comprehensive plans, long-term comprehensive plans, and development plans. It can be a limit of this research that regional development attractiveness was determined by the relatively large per capita gross domestic product. It is necessary to further develop regional development attractiveness by closely investigating the characteristics of the region, social problems, and emissions of environmentally harmful substances.