• Title/Summary/Keyword: System necessity

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A Structural Equation Modeling of Internalizing Problem Behaviors of Korean Chinese'left-behind'Children in China (중국 조선족 유수아동의 내재화 문제행동에 관한 구조모형)

  • Hyun, Mina;Park, Jisun;Shin, Dong-Myeon
    • 한국사회정책
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    • v.24 no.1
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    • pp.153-185
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    • 2017
  • The purpose of this study is to investigate the actual conditions and causes of the problem behaviors of Korean Chinese'left-behind'children in China in order to propose a support system to prevent problem behaviors of them. For this purpose, a questionnaire survey was conducted on 399 children who attend at three Korean Chines schools in Yonbian in China. The questionnaire consisted of general characteristics, internalizing problem behavior, social support, self-esteem, and self-resilience. This paper analysed the survey data by employing one-way ANOVA and a structural equation modeling. It verified if there is significant difference in internalizing problem behaviour, self-esteem, self-resilience, and social support between left-behind children's group and non left-behind children's group. It also identified a structural causal relationship and direct or indirect effects among problematic behaviour, self-esteem, self-resilience, and social support. The results of the analysis are as follows. First, there was a statistically significant difference in the social withdrawal and depression of internalizing problem behaviors between left-behind children's group and non left-behind children's group. Second, the left-behind children's group showed no significant difference in self-resilience and social support compared to non left-behind children's group, but showed a significant difference in self-esteem. In the positive self- esteem factor, non left-behind children's group showed much higher score whereas left-behind children's group was higher in the negative self-esteem factor. Third, social support for left-behind children's group has a statistically significant direct negative effect on internalizing problem behaviors, and indirectly negative effects on problem behavior through self-resilience. These results suggest the necessity of establishing a social support system for mitigating and preventing problem behaviors and the necessity of preparing measures to improve self-resilience. Based on the results of the study, we discussed how to establish a social support system in China to mitigate internalizing problem behaviors of Korean Chinese left-behind children.

Survey and Analysis of User Opinion for the Review and Modernization of GMDSS and Implementation of e-Navigation (GMDSS 현대화 검토와 e-Navigation 이행을 위한 이용자 의견 조사 분석)

  • Lee, Bo-Kyeong;Kong, Gil-Young;Kim, Dae-Hae;Cho, Ik-Soon
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.21 no.4
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    • pp.381-388
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    • 2015
  • Global Maritime Distress and Safety System (GMDSS) equipment and Electronic Chart Display & Information System (ECDIS) are typical equipment which help seafarers to obtain information for ship's safe navigation. In this study, a survey on using of GMDSS equipment and ECDIS was conducted on a total of 260 ship masters and crew who have been working on ocean-going vessels. The subjects were asked about the usage, and level and reason of satisfaction or dissatisfaction of GMDSS equipment and ECDIS, the leading navigational system from which they receive information. The survey showed that the third- and fourth-most frequently used equipment, MF/HF and INMARSAT (telex), were deemed to be the second- and third-most useless equipment. It means that the frequency of device usage is not proportionate to the level of navigational safety. Especially, 'ease of device use (42.3%)' and 'necessity of the provided information (50%)' were highlighted as factors increasing the level of satisfaction with the system. The survey result shows that ship safety cannot be realized by only adopting advanced systems, technology and services. It emphasizes the need to consider the level of 'accessibility and appropriateness of the information' and 'ease of device use'. Discussions implemented by the IMO on various policies and regulations are aimed at securing ship safety. In order to achieve the goal, such institutions should be validated by end-users and relevant studies should be conducted.

A Study on the Expansion of Arbitration's Area of Coverage in Korea (한국중재의 영역확대 방안에 관한연구)

  • Kim, Suk-Chul
    • Journal of Arbitration Studies
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    • v.20 no.3
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    • pp.47-69
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    • 2010
  • From the review of Korean arbitration systems with the comparison of those of other countries, we can summarize some issues to be tackled as follows: First, Korean arbitration system started with the purpose of export promotion. This may be the main reason that various domestic disputes have not been resolved by arbitration. Second, the Korean Arbitration Law applies to private disputes. The Law's arbitration scope is wider than that of China and France, but narrower than that of the U.S.A. that encompasses a variety of disputes in the filed of consumer, labor, medical services, patents, etc. Third, active judges or public officials in Korea can not be arbitrator and there is no arbitration court. However, if chief judge allows the necessity, court's judges in the UK can be arbitrator with the mutual agreement of the parties and also arbitration system is operated in the court. Fourth, the Korean Commercial Arbitration Board(KCAB), the only representative institution for arbitration in Korea, is under the Ministry of Knowledge Economy(MKE). This makes it difficult for the KCAB to handle other disputes related to the Ministry of Health and Welfare, the Ministry of Strategy and Finance, the Ministry for Food, Agriculture, Forestry and Fisheries, the Ministry of Employment and Labor, etc. Fifth, as mentioned, the KCAB is the unique institution for arbitration by the Law in Korea, while other countries allow have a diversity of arbitration agencies such as maritime arbitration organization, consumer arbitration institution, arbitration court, etc. Therefore, we suggest some ideas to expand the arbitration's area of coverage in Korea as follows: First, there should be more active policies that promote various domestic disputes to be settled by the arbitration system. Second, it is quite needed to expand the scope of arbitration to cover many disputes in the fields of consumer, labor, medical service, advertising, fair trade, etc. Third, there should be discussions to allow court judges as arbitrator and to introduce the arbitration court. Fourth, the KCAB should strengthen its status and roles as general arbitration organization to overcome the limited scope of commercial disputes. For this, there should be the strong support and coordination among the MKE and other government agencies. Fifth, to reduce the burden of the court's complicated and expensive procedures, more efficient disputes resolution systems should be established on the basis of the parties' free will. Each central government agency should streamline the legal barriers to allow industrial organizations under its control to establish their own or joint arbitration system with the KCAB.

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A User Analysis on the Improving Direction of KONEPS : Focus on Gyeongbuk province (국가종합전자조달시스템 종합쇼핑몰 개선방향에 대한 사용자분석 : 경북지역 중심으로)

  • Kim, Sang-Min;Lee, Hyun-Soo
    • Journal of Digital Convergence
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    • v.16 no.5
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    • pp.33-42
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    • 2018
  • This paper is based on the suggestions of the prior research on the buyer feedback, the selection of various product options, and the payment procedure improvements for Korea ON-line E-Procurement System(KONEPS), and this is to confirm the necessity of improvement and satisfaction from the viewpoint of the workers of the public and subordinate organizations the purchasing and using of the computer equipment in the actual KONEPS(Korea ON-line E-Procurement System). Based on the basic questionnaires and in-depth interviews, this paper conducts the qualitative case studies on IT and non - IT workers who had purchasing experiences for equipment at public institutions and government agencies in Gyeongbuk province. As results of the study, it was confirmed that the improvement is necessary for the buyer feedback and option selection part, and that there is a difference among the work experience for the simplification of the payment procedure and the satisfaction. In addition, the biggest contribution in the provided research is to categorize and to analyze the opinions on the use of public and relevant subordinate research participants. Additional work will be needed for a large number of workers in public and subordinate organizations who have purchasing experiences for handling various procurement products and those working in the metropolitan area and other public and subordinate agencies.

Development and application of the Smart Learning Teaching-Learning Program in Elementary Science Class - Focused on the unit of Solar System and Star (초등과학에서 스마트러닝 교수·학습 프로그램의 개발과 적용 - 태양계와 별 단원을 중심으로)

  • Yun, Hee Geon;Choi, Sun-Young
    • Journal of Science Education
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    • v.39 no.3
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    • pp.321-332
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    • 2015
  • This study was intended to determine how developed Smart learning teaching-learning program on the unit of Solar system and Star affected on science-related attitude, science learning interest and academic achievement. The unit of Solar system and Star was selected among 5th grade science curriculum contents to design smart learning teaching-learning program. Smart learning instruction program utilized a various contents of smart equipment and made learners to do problem solving through their interaction and cooperation. The results of this study were as follows: First, smart learning instruction improved the science-related attitude and the science learning interest and the academic achievement of the experimental group students significantly. Sencond, the survey and the individual face-to-face data shows the positive effects of smart learning instruction. Especially, the satisfaction was high on the attitudes and interests in the classroom and the students regarded the classroom activities as interesting games by using the smart devices. On the basic of the conclusions, this work suggested the direction of the future studies, such as necessity of developments and researches on Smart learning teaching-learning program about other units or other subjects, such as measures of the increasing the intrinsic interest on science rather than Smart learning elicit simple interest and attitude.

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A Promotion Plan through Measuring the Utilization of Information Classification Systems in the Construction Industry (건설정보 분류체계 활용도 측정을 통한 분류체계 활성화 방안)

  • Park, Hwan-Pyo;Lee, Jae-Seob
    • Korean Journal of Construction Engineering and Management
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    • v.5 no.6 s.22
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    • pp.90-100
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    • 2004
  • The importance of information management has been emphasized in Korean construction industry, Both public and private have invested to establish and operate construction CALS, construction management (CM), computer integrated construction(CIC), and earned value management system(EVMS). A standard construction information classification system is essential to operate the systems mentioned above. Therefore, Korean government released Integrated Construction Information Classification System(ICICS) in 2001. However, the ICICS is not widely used in construction due to: 1) difficulty of changing existing system, 2) insufficient publicity of the ICICS, and 3) no legal binding force. Especially, participants in construction do not recognize applicability of the ICICS. This research surveyed the degree of recognition and utilization of the ICICS. This survey includes both customized classification systems used by companies and the ICICS and investigates the degree of utilization and drawbacks. The results show some construction companies use their own classification systems and the others use the ICICS prepared by the government. Furthermore, the degree of recognition is in sufficient. The degree of use in design management, specifications, cost and schedule management is very limited. The publicity and education are critical to induce the utilization of the ICICS. The necessity of revision was recommended based on pilot project study that is performed to measure the degree of application of ICICS on the projects. Therefore, this research proposes the measurement model for information application and analyzes the degree of utilization of the ICICS in different phases of construction.

Design and Implementation of a Spatial Data Mining System (공간 데이터 마이닝 시스템의 설계 및 구현)

  • Bae, DUck-Ho;Baek, Ji-Haeng;Oh, Hyun-Kyo;Song, Ju-Won;Kim, Sang-Wook;Choi, Myoung-Hoi;Jo, Hyeon-Ju
    • Journal of Korea Spatial Information System Society
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    • v.11 no.2
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    • pp.119-132
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    • 2009
  • Owing to the GIS technology, a vast volume of spatial data has been accumulated, thereby incurring the necessity of spatial data mining techniques. In this paper, we propose a new spatial data mining system named SD-Miner. SD-Miner consists of three parts: a graphical user interface for inputs and outputs, a data mining module that processes spatial mining functionalities, a data storage model that stores and manages spatial as well as non-spatial data by using a DBMS. In particular, the data mining module provides major data mining functionalities such as spatial clustering, spatial classification, spatial characterization, and spatio-temporal association rule mining. SD-Miner has own characteristics: (1) It supports users to perform non-spatial data mining functionalities as well as spatial data mining functionalities intuitively and effectively; (2) It provides users with spatial data mining functions as a form of libraries, thereby making applications conveniently use those functions. (3) It inputs parameters for mining as a form of database tables to increase flexibility. In order to verify the practicality of our SD-Miner developed, we present meaningful results obtained by performing spatial data mining with real-world spatial data.

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A Study on the Policy Improvement by Means of a Historical Review of School Health Programs (학교보건사업의 역사적 고찰을 통한 정책 방향에 관한 연구)

  • Kim, Sang-Wook;Kim, Yoon-Shin;Chang, Chang-Gok
    • Journal of the Korean Society of School Health
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    • v.17 no.2
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    • pp.127-150
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    • 2004
  • Objectives: The purpose of this study is to provide a basic structure for the establishment of the direction of school health programs, an overview of the historical changes of school health programs and their results, and a conceptual framework on school health programs. Methods: The data analysis has been done using a statistical almanac, relevant laws and regulations, operation handbook of the program, theses, reports, records of public hearings, and other reports as a technical research primarily based on evidence. The methodology of this research classifies the development and growth transition of school health programs during a historical period through the investigation of regulations, organization, manpower, and its program via its development process and to provide a basic tool to design a solid school health policy. Results: A The growth and development of school health programs The development of school health programs was classified into three different periods including the forthcoming period (1945~1967), the completion period (1967~1993), and the actualization period based on the establishment of legislation for School Health Law, other relevant legislation, and the contents of school health programs (1993~present). B. Policy direction of school health programs School health programs have reestablished their goals and range based on basic direction, and developed the W1it model of information structure for school health program management and its basic structure. Finally, the stepwise support system through the building of the school health support center is recommended. (1) The basic direction of school health programs has proposed 7 basic goals to reestablish the policy direction of health improvement based on total health. (2) The W1it model of information system and the school health information system for school health program management has been developed to utilize positive management. (3) School health policy through the study of the health laws and systems has been developed. The necessity of school health support center for the policy support, functional support and operation support has also been proposed. Conclusions: It is necessary to build a school health support center that consists of health professionals in charge of policy support, functional support, and program support of school health programs in order to realize and develop new policy.

Assessment of the Struvite Crystallization Process for Phosphate Removal and Recovery from a Sludge Treatment System of a Domestic Wastewater Treatment Plant (하수처리장 슬러지처리 계통에서의 인 제거 및 회수를 위한 Struvite 결정화 공정 적용성 평가)

  • Baek, Seung Ryong;Lee, Byung Joon
    • Journal of Korean Society of Environmental Engineers
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    • v.39 no.8
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    • pp.462-469
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    • 2017
  • Eutrophication and shortage of phosphate ore raise the necessity of phosphate removal and recovery from wastewater treatment plants. Especially, a sludge treatment system containing highly concentrated phosphate should be targeted for phosphate removal and recovery. This study thus aimed to evaluate the capability of the struvite crystallization process for phosphate removal and recovery from a sludge treatment system of a wastewater treatment plant. Analysis on phosphate concentrations and masses in the sludge treatment system revealed that digested sludge and centrate have phosphate concentrations and masses, high enough to adopt the struvite crystallization process. Chemical equilibrium modeling indicated that the struvite crystallization reaction substantially occurred with pH higher than 8 and $Mg^{2+}$ concentration 1.2 times higher than its theoretical requirement. A series of batch tests with digested sludge and centrate indicated that the phosphate removal reaction by struvite crystallization followed a first-order kinetics and reached over 80% removal efficiency at equilibrium. Aeration in the batch tests was found to purge $CO_2$ in sludge or centrate and increase pH up to 8.7, without adding NaOH. Thus, we concluded that the struvite crystallization process could be an efficient and economical process for phosphate removal and recovery from a wastewater treatment plant.

DFT-spread OFDM Communication System for the Power Efficiency and Nonlinear Distortion in Underwater Communication (수중통신에서 비선형 왜곡과 전력효율을 위한 DFT-spread OFDM 통신 시스템)

  • Lee, Woo-Min;Ryn, Heung-Gyoon
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.35 no.8A
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    • pp.777-784
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    • 2010
  • Recently, the necessity of underwater communication and demand for transmitting and receiving various data such as voice or high resolution image data are increasing as well. The performance of underwater acoustic communication system is influenced by characteristics of the underwater communication channels. Especially, ISI(inter symbol interference) occurs because of delay spread according to multi-path and communication performance is degraded. In this paper, we study the OFDM technique to overcome the delay spread in underwater channel and by using CP, we compensate for delay spread. But PAPR which OFDM system has problem is very high. Therefore, we use DFT-spread OFDM method to avoid nonlinear distortion by high PAPR and to improve efficiency of amplifier. DFT-spread OFDM technique obtains high PAPR reduction effect because of each parallel data loads to all subcarrier by DFT spread processing before IFFT. In this paper, we show performance about delay spread through OFDM system and verify method that DFT spread OFDM is more suitable than OFDM for underwater communication. And we analyze performance according to two subcarrier mapping methods(Interleaved, Localized). Through the simulation results, performance of DFT spread OFDM is better about 5~6dB at $10^{-4}$ than OFDM. When compared to BER according to subcarrier mapping, Interleaved method is better about 3.5dB at $10^{-4}$ than Localized method.