• Journal of The Korea Institute of Healthcare Architecture
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• v.11 no.1
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• pp.43-54
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• 2005

This study is a second paper of the re-structuring strategies of healthcare facilities in Kwang-ju and Jeon-nam province for it's competition power in the emerging global health care market. Kwang-Ju city and Jeon-nam province have had difficulties in building a balanced healthcare system because of rapidly declining population, weakened healthcare infra-structure and geographical problems of healthcare supply by numerous islands. This paper presents the new approaching process for re-building healthcare network in the regional healthcare facilities planning. In addition, it analyzes health planning index, healthcare system, the concept of health care networking, etc. Finally, this presents the case study of regional healthcare facilities planning in Kwang-ju city and Jeon-nam Province.

• Nuclear Engineering and Technology
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• v.51 no.3
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• pp.825-836
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• 2019

One of the most challenging safety precautions for workers in dynamic, radioactive environments is avoiding radiation sources and sustaining low exposure. This paper presents a sampling-based algorithm, DL-RRT*, for minimum dose walk-path re-planning in radioactive environments, expedient for occupational workers in nuclear facilities to avoid unnecessary radiation exposure. The method combines the principle of random tree star ($RRT^*$) and $D^*$ Lite, and uses the expansion strength of grid search strategy from $D^*$ Lite to quickly find a high-quality initial path to accelerate convergence rate in $RRT^*$. The algorithm inherits probabilistic completeness and asymptotic optimality from $RRT^*$ to refine the existing paths continually by sampling the search-graph obtained from the grid search process. It can not only be applied to continuous cost spaces, but also make full use of the last planning information to avoid global re-planning, so as to improve the efficiency of path planning in frequently changing environments. The effectiveness and superiority of the proposed method was verified by simulating radiation field under varying obstacles and radioactive environments, and the results were compared with $RRT^*$ algorithm output.

• Journal of Korean Society of Rural Planning
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• v.14 no.2
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• pp.33-42
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• 2008

Recently, rural leisure by urban dwellers has been recognized as a catalyst for regional development or restoration. The federal government implemented several regional planning policies attempting to address this phenomenon in the late nineties. However, most of these policies focused on supply-centered planning, which caused a diverse set of problems relating to the sustainability and economic validity of the planning. Instead, this study focuses on the re-visitation one of the demand variables, with the intention of analyzing the character of rural leisure demand and its re-visitation choice attributes. For these reasons, this study investigates the character of current rural leisure demand, and develops functional equations about urban people who visit rural areas, using logit model. The results of this study can be summarized as follow: Urban people are visiting rural areas from nearby cities or metropolitan areas that are within 3 hours driving distance, and over 80% of rural visitors are one-day visitors. Therefore, most of their visitation activities should be understood as rural leisure, including rural tourism. In addition, the likelihood of the rural tourist to make a return visit is influenced by their transportation means, product purchasing, staying period and travel time. The results of such rural leisure demand can provide information for regional planning strategies, such as selection of target market, type of market segments, improvement of recognition level, activity program price, facility and space planning, produce sale and connection with tour site.

• Journal of Information Processing Systems
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• v.16 no.6
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• pp.1324-1342
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• 2020

Various modified algorithms of rapidly-exploring random tree (RRT) have been previously proposed. However, compared to the RRT algorithm for collision avoidance with global and static obstacles, it is not easy to find a collision avoidance and local path re-planning algorithm for dynamic obstacles based on the RRT algorithm. In this study, we propose boundary-RRT*, a novel-algorithm that can be applied to aerial vehicles for collision avoidance and path re-planning in a three-dimensional environment. The algorithm not only bounds the configuration space, but it also includes an implicit bias for the bounded configuration space. Therefore, it can create a path with a natural curvature without defining a bias function. Furthermore, the exploring space is reduced to a half-torus by combining it with simple right-of-way rules. When defining the distance as a cost, the proposed algorithm through numerical analysis shows that the standard deviation (σ) approaches 0 as the number of samples per unit time increases and the length of epsilon ε (maximum length of an edge in the tree) decreases. This means that a stable waypoint list can be generated using the proposed algorithm. Therefore, by increasing real-time performance through simple calculation and the boundary of the configuration space, the algorithm proved to be suitable for collision avoidance of aerial vehicles and replanning of local paths.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.751-753
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• 2005

기존의 시맨틱 웹 서비스 에이전트는 사용자 요구에 의미적으로 부합하는 서비스를 검색하고 합성하는 플래너에 중점을 둔 반면 실행자에는 큰 비중을 두지 않았다. 그러나 기존의 다수 플래닝 알고리즘은 사용자 제약 사항의 일부만을 적용하여 불완전한 결과를 도출함에도 불구하고 플래닝을 완료하는 문제가 있다. 따라서 실행자가 단순히 플래닝된 서비스만을 실행한다면 사용자 요구를 완전히 충족시킬 수 없다. 이를 해결하기 위해 본 논문에서는 플래닝의 취약점을 보완하는 실행자를 제안하고 이를 기반으로 에이전트를 개발하였다. 본 논문에서 제안한 실행자는 서비스 실행 결과를 분석하여 사용자의 요구 사항 중 반영되지 않은 정보의 적용 또는 불필요한 정보의 제거를 위해, 플래너에게 re-planning을 요구하거나 서비스 실행 결과 자체에서 관련 정보를 추출한다. 이를 통해 사용자의 요구 사항에 대한 서비스 결과의 정확도 향상을 도모한다.

• Journal of Mechanical Science and Technology
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• v.20 no.1
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• pp.19-28
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• 2006

This paper describes rapid prototyping (RP) and reverse engineering (RE) application for orthopedic surgery planning to improve the efficiency and accuracy of the orthopedic surgery. Using the symmetrical characteristics of the human body, CAD data of undamaged bone of the injured area are generated from a mirror transformation of undamaged bone data for the uninjured area. The physical model before the injury is manufactured from Poly jet RP process. The surgical plan, including the selection of the proper implant, pre-forming of the implant and decision of fixation positions, etc., is determined by a physical simulation using the physical model. In order to examine the applicability and efficiency of the surgical planning technology, two case studies, such as a distal tibia comminuted fracture and an iliac wing fracture of pelvis, are carried out. From the results of the examination, it has been shown that the RP and RE can be applied to orthopedic surgical planning and can be an efficient surgical tool.

• The Journal of the Korea Contents Association
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• v.15 no.12
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• pp.459-470
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• 2015

In this study, we have developed a retirement coaching model for effective retirement planning by applying systematic conversation of the coaching technique. A draft of the retirement coaching model was complemented by the validity verification of experts. The retirement coaching model can be summarized as follows. The first step, rapport and empowerment(RE), consists of sharing the image of a happy retirement after establishing a rapport between the coach and the people wanting to prepare for retirement. The second step, target establishment(T), consists of setting the theme and goals of the conversation. The third step, identification(I), consists of developing a retirement plan for achieving the established goals. The fourth step, realization(R), consists of establishing a concrete schedule and a method of retirement planning. The fifth step, evaluation(E), consists of sharing impressions during coaching sessions, which facilitates future action plans.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.38 no.2
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• pp.150-159
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• 2010

The approach and landing phase of a re-entry vehicle is composed of Steep Glideslope phase, Circular Flare phase, Flare Maneuver phase. The trajectory planning algorithm with geometric parameters is studied in this paper for on-board trajectory planning. This algorithm generate reference trajectory rapidly considering safe landing of re-entry vehicle. In this paper, the Mamdani Fuzzy PD type controller for longitudinal and lateral control is designed which has robustness of nonlinear system. In addition, the simulation is performed including initial downrange and crossrange errors, and the results shows that the proposed fuzzy logic controller has good performance.

• Journal of Families and Better Life
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• v.25 no.1 s.85
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• pp.145-158
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• 2007

The purpose of this study was to elicit the multi-dimensions of retirement expectations, and explore sub-factors of retirement expectations which predict the possibility of worker's participation to each pre-retirement planning programs. The major findings were as follows: first, this study shows that there are four sub-factors; Imposed frustration, New beginning, Transition to rest, Continuing. And there was a significant difference in retirement expectation according to sex, age, income, and health status. Second, the major affecting factors on participation in pre-retirement planning programs were sex, age, job, educational attainment, and health status. Third, those who have retirement expectations of 'Imposed frustration' tend to attend re-employment, leisure, and health education. Those who have retirement expectations of 'Transition to rest' tend to attend re-employment, inauguration education. And those who have retirement of 'Continuing' tend to attend leisure education.

• Journal of Korean Society of Rural Planning
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• v.17 no.1
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• pp.59-65
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• 2011

Re-visitation have an effect on dependent variables of regional tourism demand model. This study focused on the re-visitation impacts of consideration on sustainable tourism development of tourists as a new factors of tourism. Based on literature reviews, 11 variables were selected, a questionnaire survey was given to 406 tourists divided into 5 tourism sites at Chuncheon city, and logit model and probit model were used for analysis. The fitness levels of two models were very significant(p=0.0000). The study results suggest that the likelihood of the rural tourist to make a return visit is influenced by recognition of sustainable tourism, purchase of souvenir and farm produce, visitation of regional shops, conversation with regional residents, residents' participation on development, age and marriage. The results of such re-visitation demand can provide information for regional development strategies. The approach to re-visitation research impacts of consideration on sustainable tourism development is expected to become a useful foundation in studying on sustainable regional development.