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Accuracy Analysis for a Mobile Mapping System

  • Lee, Seung-Yong;Kim, Seong-Baek;Choi, Ji-Hoon;Jang, Byoung-Tae
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.603-605
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    • 2003
  • Constructing a geo-spatial database of Graphic Information Systems(GIS) in various applications is suffering from the difficulty of data acquisition, which is labor-intensive and time consuming. In order to provide the spatial data rapidly and accurately, 4S-Van, a prototype mobile mapping system, has been developed. This paper presents a novel approach for an analysis for Mobile Mapping Systems. Furthermore, we discuss the accuracy of measurements using images acquired from the 4S-Van. The first part of this paper introduces accuracies of other mobile mapping systems. Then, we describe main features of the 4S-Van and our proposed method for an analysis accuracies, which can be applicable to other mobile mapping systems. The last part of paper concludes with a summary and our suggestions for implementation of mobile mapping system.

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A Study on the Improvements of the Deterrent Factors in Coastal Passenger Routes of Korea;At a Management Level in the 'P' Car-ferry Liner. (우리나라 연안여객항로의 활성화저해요인과 그 개선방안에 관한 연구;P선사의 진해-거제항로를 중심으로)

  • Kim, Myeong-Jae
    • Proceedings of the Korea Port Economic Association Conference
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    • 2006.08a
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    • pp.67-102
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    • 2006
  • The Purpose of this study is to improve the deterrent factors in Korea's coastal passenger shipping on the basis of field data collected in order to help stimulate it and enhance its competitiveness. As the representative model of this study, the "P" car-ferry liner was chosen, whereby various deterrent factors were observed in the course of the SWOT analysis and through the questionnaires. The major deterrent factors in summary were inflexible government regulations for additional ship operation, disadvantages of taxes policy, port facility shortages, non-allowing of ship's night operation, complicated and inflexible ship's operation controls by the concerned authorities, unreasonable divisions of steaming areas, and existences of obstacles on the ship's running routes, etc. which considered all are important to activate the liners.

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Analysis of Factors Affecting Stress in the Elderly Women

  • Kang, Yun-Jung;Lee, Gil-Hyun
    • Biomedical Science Letters
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    • v.24 no.4
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    • pp.319-328
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    • 2018
  • The purpose of this study is to identify the factors influencing the stress of the elderly women by various tools and to provide basic data for adaptation to the aging women. For this purpose, stress was measured by stress measuring equipment (HRV) and stress measurement questionnaire (SRI) in 31 elderly women over 60 years old. In summary, the results of this study suggest that the worse the subjective health, and when there is a spouse, it predicts a stress. In order to reduce the stress of elderly women based on these results, physical health management and environmental factors that can enhance the intimacy between husband and wife are also necessary.

Analysis of Operational Effect of Public Culture & Arts Institution (공공 문화예술기관의 운영효과 분석)

  • Kim, Shin-Pyo;Cho, Hyun-Joo
    • Journal of Industrial Convergence
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    • v.14 no.2
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    • pp.39-46
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    • 2016
  • The purpose of this Study is to present the tasks and means of improving the operational system of public culture and arts institutes in the future on the basis of the analysis of the effectiveness of operation of public culture and arts institutes. The summary of the results of analysis in this Study is as follows: Firstly, it was found that the factor variables that impart effect on the operation of public culture and arts institutes included (1) artistic value, (2) convenience and (3) organizational management, while the performance variable of public culture and arts institutes was (4) operational performance. Secondly, in the analysis of the structure that explains the operational effects of public culture and arts institutes, convenience and organizational management were found to impart effects on the operational performances. However, artistic value was found to have no effect on operational performances. Therefore, these results of analysis imply that organizational management and convenience, rather than artistic value, need to be fortified in order to elevate the operational performances of public culture and arts institutes.

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A Study on the Landscape Characteristics of Jeju Woljeong-ri Batdam as an Agricultural Heritage Systems (농업유산으로서 제주 월정리 밭담의 경관 특징에 대한 연구)

  • Lim, Jung-woo;Son, Yong-hoon
    • Journal of Korean Society of Rural Planning
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    • v.27 no.3
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    • pp.57-68
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    • 2021
  • The purpose of this study was to examine the area of Woljeong-ri, Jeju, as a target site in order to derive the landscape features of Jeju Batdam, designated as an agricultural heritage. The summary of the research results is as follows. First, the Batdam of Woljeong-ri is closely related to the local natural envrionment, forming a unique landscape pattern in terms of shape and scale. Second, the site where drainage management is important due to its geological characteristics has a water resource management Batdam landscape for effective drainage management. Third, the farmers in Woljeong-ri, who have been engaged in agricultural activities for a long time, have implemented a utilization system that considers different land conditions. As a result, the landscape of Batdam in Woljeong-ri, Jeju, shows the characteristics of the landscape that is constantly evolving.

A stability factor for structure-dependent time integration methods

  • Shuenn-Yih Chang;Chiu-Li Huang
    • Structural Engineering and Mechanics
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    • v.87 no.4
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    • pp.363-373
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    • 2023
  • Since the first family of structure-dependent methods can simultaneously integrate unconditional stability and explicit formulation in addition to second order accuracy, it is very computationally efficient for solving inertial problems except for adopting auto time-stepping techniques due to no nonlinear iterations. However, an unusual stability property is first found herein since its unconditional stability interval is drastically different for zero and nonzero damping. In fact, instability might occur for solving a damped stiffness hardening system while an accurate result can be obtained for the corresponding undamped stiffness hardening system. A technique of using a stability factor is applied to overcome this difficulty. It can be applied to magnify an unconditional stability interval. After introducing this stability factor, the formulation of this family of structure-dependent methods is changed accordingly and thus its numerical properties must be re-evaluated. In summary, a large stability factor can result in a large unconditional stability interval but also lead to a large relative period error. As a consequence, a stability factor must be appropriately chosen to have a desired unconditional stability interval in addition to an acceptable period distortion.

A Study on Establishing the Evaluation System of the Stock Enhancement Program (수산자원조성사업의 합리적인 평가체계 도입 방안에 관한 연구)

  • Kim, Dae-Young;Ryu, Jeoung-Gon;Lee, Jeoung-Sam
    • The Journal of Fisheries Business Administration
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    • v.41 no.1
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    • pp.1-24
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    • 2010
  • The main goal of the study is to propose an objective and standardized evaluation system of stock enhancement programs. In order to achieve this goal, the study first suggested the need for stock enhancement program evaluation system through the review of current status and problems. Second, the study identified possible problems of the existing stock enhancement program evaluation by reviewing domestic and foreign evaluation systems. Finally the study proposed a new evaluation system and implementation plan of it. This study also classified the program evaluation criteria into ex-ante evaluation and ex-post evaluation according to the evaluation point in time, and applied the economic, political and technical feasibility tests into the evaluation of the stock enhancement program in order to solve the current problems of the evaluation. The evaluation process of the stock enhancement program is composed of an evaluation system design, estimation of weights using the analytical hierarchy process, design of estimation standard, conversion of scores and final summary of the evaluation. The central government takes the lead in the evaluation of the regional (metropolitan city or province) projects and the regional government is in charge of the evaluation of the local (city or county) projects. For the implementation of the ex-ante evaluation, either the regional or local governments ask for the evaluation and then submit an evaluation plan and other necessary documents to the upper level governments. The ex-post evaluation is then carried out by the upper level governments.

Evaluation of Structural Performance on Corbel in the Reinforced Concrete (철근콘크리트 코오벨 부재의 구조성능 평가 및 내력 추정)

  • Cho, Seong-Ho;Park, Tae-Won;Woo, Sung-Sik;Chung, Lan;Park, Hyun-Soo;Kim, Dong-Baek
    • Journal of the Korean Society of Safety
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    • v.23 no.3
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    • pp.58-64
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    • 2008
  • In order to identify the exact behavior of corbel section, the horizontal force acting on corbel section should be considered as well as the vertical force. In this study, a new corbel section, which is economical and easy to construct, is developed by evaluating the exact strength of the section. Experiments were performed to verify the strengths of the proposed sections comparing with those of the currently used section. The summary of the experiment results are as follows: 1) In order to minimize the horizontal force effect, it was found that the use of pre-stressing was most effective, and that TB type corbel section is a most efficient section in terms of economy and workability. 2) The experimentally obtained strength of corbel section matched well with that estimated using shear friction theory. Therefore, it is concluded that shear friction theory would be very useful if a precise crack angie in the corbel section, which is pre-stressed by PS strings and threaded bolts, is available.

Study on Three-yin-three-yang on the Parting and Meeting of Yin-Yang in Hwangjenegyeng Somun (소문 음양이합론의 삼음삼양 해석과 운용방법)

  • Kim Kwang Joong
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.17 no.6
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    • pp.1347-1355
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    • 2003
  • The adapted scope of the Opening-covering-axis of Three-yin-three-yang can summary two parts. the first, former treatise of Gyeng-Lak emphasized the line structure by point and line but now we can understand expansible structure as not only line but also space of structure by the space structure of six-meeting. So the application of Gyeng-Lak can be various by extensive analysis of the Hand-three-yin-three-yang in Sky(Yang) including the Foot-three-yin-three-yang in Ground (Vin), even if the original text has limited examples. The second, former additional explanations of Hwangjenegyeng Sanghanlon by doctors can be profoundly analysis about the pathology and cure process of Three-yin-three-yang of human body. It has base on the metaphorically symbolized theory of Three-yin-three-yang. This is the Saeng-jang-shu-chang of So-yin, Tae-yang, Yang-myeng, So-yang. Tae-yin, Guel-yin in order. Also the circulation of Opening-covering-axis of Three-yin-three-yang has order in Tae-yang (Opening), Yang-myeng (Covering), So-yang (Axis), Tae-yin (Opening), Guel-yin (Covering), So-yin(Axis).

An Overview of Current Trends of Studies about Environmental Health Indicators in Korea (우리나라 환경보건지표 개발 과정과 활용)

  • Lee, Jong-Tae
    • Journal of Environmental Health Sciences
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    • v.40 no.2
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    • pp.71-80
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    • 2014
  • Objectives: The main purpose of this review is to introduce the current status of environmental health indicators of Korea and to share our experience of the developmental process of Korean version of environmental health indicators. Methods: This paper describes 1) the background of environmental health indicators; 2) the ways how we developed environmental health indicators of Korea; 3) the current status of selected indicators; and 4) suggestions for the further policy development. Results: The 6-year long project for the development of environmental health indicator systems in Korea could provide outputs on three major distinct aspects on the indicator issues. Firstly, we have developed the rational process/manual so that the government can select and advocate the potential indicators with a relatively objective manner. Secondly, we have suggested the potential candidate indicators which can be implemented immediately. We also pooled all indicators in order to evaluate the summary index which we expect to tell the status of environmental health. Third, we provided suggestions on the further utilization of this indicator system. Conclusion: The mission of environmental health policy is to resolve the public health problems occurring because of hazardous environment. In order to identify the environmental determinants of the community health problems and to evaluate the effectiveness of the policy implemented, these environmental indicators can be used. Therefore, the government should implement this ready-prepared system of environmental health indicators.