• Journal of information and communication convergence engineering
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• v.17 no.2
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• pp.128-134
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• 2019

Based on the concept of Industry 4.0, various sensors are attached to facilities and equipment to collect data in real time and diagnose faults using analyzing techniques. Diagnostic technology continuously monitors faults or performance degradation of facilities and equipment in operation and diagnoses abnormal symptoms to ensure safety and availability through maintenance before failure occurs. In this paper, we propose a model to analyze the data and diagnose the state or failure using machine learning. The diagnosis model is based on a support vector machine (SVM)-based diagnosis model and a self-learning one-class SVM-based diagnostic model. In the future, it is expected that this model can be applied to facilities used in the entire industry by applying the actual data to the diagnostic model proposed in this paper, conducting the experiment, and verifying it through the model performance evaluation index.

• Journal of Korean Public Health Nursing
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• v.26 no.1
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• pp.147-157
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• 2012

Purpose: The purpose of this study was to identify the related factors of change affecting the stages of change for exercise, on the assumption that there are various stages of change in the exercise behavior of women in nursing college. Methods: The subjects were 496 female college students in D city. The research instruments were stages of change for exercise behavior, the process of change, decisional balance, and self-efficacy. The dates were analyzed by descriptive statistics, ANOVA, and stepwise multiple regression using the SPSS 18.0 program. Results: The distribution of the subjects across the stages was: pre-contemplation, 17.7%; contemplation, 58.7%; preparation, 19.0%; action, 2.8%; maintenance, 1.8%. Analysis of variance showed that cognitive process (F=17.26, p<0.01), behavioral process (F=27.05, p<0.01), the pros of decisional-balance (F=7.07, p<0.01), the cons of decision-balance (F=5.82, p<0.01), and self efficacy (F=17.79, p<0.01) were significantly associated with the change of exercise behavior stages. The related factors of change affecting the change of exercise behavior stage were the cons of decision-making, counter conditioning, self re-evaluation, and body mass index, including 28.4% R-square. Conclusion: The transtheoretical model would be applicable to explain the exercise behavior of some women in nursing college. So, this study will be useful information for developing effective exercise behavior programs considering female students' stages of change.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.sup2
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• pp.1-5
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• 2016

To reduce tobacco use and related harm in Korea, telephone based cessation services (Quitlines) began full operation to provide regular behavioral counseling for smoking cessation in 2006. After registration in the cessation program, at least 21 calls per year are given to each client to help quit and encourage maintenance. Tailored programs for males, females, and adolescent smokers have been offered taking into account smokers' characteristics and smoking behavior. Mailing self-help quit packs and e-mail and SMS services are allowable as additional services.A total of 23,201 smokers were registered on the Quitline program from 2006 to 2014. In 2014, an average of 13,343 calls per month have been received by 28 coaches, the 1 year abstinence rate of clients is 26%, and clients' satisfaction rate is 81.6%. After introduction of the call system in 2007, client convenience and effective operations have been achieved with high technology support of a computer-based telephone system. Systematic education and evaluation programs for quit coaches have contributed to quality assurance of the services. Currently, research into development of new programs and evaluation of Quitline performance is being undertaken. A Comprehensive Multi-channel Cessation Center (CMCC) has been suggested and is now planned as a next step in the national program for smoking cessation.

• Journal of Fisheries and Marine Sciences Education
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• v.11 no.2
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• pp.150-183
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• 1999

Korea-Japan Fisheries Agreement concluded in 1965 made a contribution to the stable development of fisheries relationship for both countries until the year of 1980. From the time on thereafter a series of respectable fishery disputes occurred throughout the period of fisheries self-regulation in accordance with alteration of home and abroad conditions. And both countries marched into a cooperation era by enforcement of the new fisheries agreement from the 23 January 1999, because the Fisheries Agreement system of 1965 had many limitations to settle the fundamental fisheries problems. In this paper, the author carried out the legal interpretation, arrangement of historical facts and evaluation of actual results of the Korea-Japan Fisheries Agreement of 1965. The key contents of the Fisheries Agreement were the establishment of 12-nautical mile exclusive fishery zone and the joint-control fishery zone under the principles of maintenance of MSY for fishery resources, freedom of high seas and mutual cooperation. The legal foundation of the conclusion of the Fisheries Agreement were the San Francisco Peace Treaty of 1952 and the four International Conventions on the Law of the Sea of 1958. During the 33 years, the fisheries power of Korea made a rapid stride, on the other hand that of Japan was almost stagnated. And in the meantime, there were very important development on the international law of the sea, for instant, the settlement of 12-nautical mile territorial sea regime and the establishment of 200-nautical mile exclusive economic zone regime. Annual meetings of the Joint Fisheries Committee were not successful to fill the role for conservation of fishery resources. The Fisheries Self-Regulation Agreement concluded in 1980 was also insufficient to accept the new international regime on the law of the sea, for that reason it was terminated on 23 January 1999. But it is true that the Fisheries Agreement of 1965 made a contribution to normalization of fisheries relationship between both countries and fisheries development of Korea.

• The Journal of Korean Physical Therapy
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• v.27 no.1
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• pp.68-77
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• 2015

Purpose: This study was conducted in order to explore home visiting therapists' self-perceived role, problems, and supplement points of the home-based rehabilitation (HR) program based on the community-based rehabilitation (CBR) model. Methods: Four home visiting physical therapists, who conducted the HR program, participated in this study. After completion of the HR program, in-depth interviews were conducted using a semi-structured questionnaire for participants to explore their self-perceived role, problems, and supplement points of the HR program. Results: Participants regarded the role of the HR program as for "the linkage between recipient & society", "maintenance & improvement of recipients' physical function", and "education of recipient about the way of self rehabilitation". The problems and supplement points were derived from all phases of the HR program, including "human & material resources", "training program for human resources for HR service", "selection of recipient of HR service", "contents of the intervention for HR service", and "duration of HR service". Conclusion: These findings indicate that participants well recognized the intention of the HR program based on the CBR model, and suggest that high-quality human resources with rich expertise and experiences, a training program for HR service led by experts, and selection of recipients led by experts are necessary for an effective HR program. In addition, strategies and capacities specified to HR service should be identified, and applied to the training program for human resources for HR service. The results of this study could provide useful information when the government decides on the next guideline for home visiting health service.

• Journal of Climate Change Research
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• v.8 no.1
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• pp.21-30
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• 2017

Recently, There has been much discussed about unused space. This space can be used in a variety of ways. Utilizing it as a facility, craft shop, and utilizing renewable energy generation facilities. Especially, in terms of climate change should be supplied renewable energy. Renewable energy needs to be developed in terms of responding to climate change, and the recent Paris agreement is also emphasizing the importance of renewable energy. In particular, renewable energy needs to be widely disseminated. And renewable energy is limited space. In this regard, idle land can provide opportunities for securing new renewable energy generation facilities. The introduction of new and renewable energy facilities in idle space can enhance the self-sufficiency rate of the local community, which is significant in terms of responding to climate. In this study, to investigate the possibility of utilizing a unused space for a photovoltaic power generation facility, we investigated the amount of electricity which could be generated through photovoltaic power generation, and the economic effects, using a RETScreen model. The results showed that 9,738 MWh of power can be generated and that $4,540tCO_2eqcan$ be saved. Regarding the economic effect, the net present value of the facility was shown to be 2,247,389,020 KRW. As the net present value was shown to be positive, we believe that the installation of a photovoltaic power generation facility in an unused space would have a positive economic effect. We found the net present value following the fluctuation of the SMP price to be positive, though there was some variation. However, as the economic efficiency was shown to be low because the net present value in relation to the maintenance costs was negative, we believe that maintenance costs must be taken fully into account when evaluating economic efficiency. In particular, as subsidies can be used to cover maintenance costs which must be factored into photovoltaic power generation, we believe that photovoltaic power generation can have an economic effect. Because spaces not currently in use can have a positive economic effect as renewable energy power generation facilities, and can also contribute to the reduction of greenhouse gas emissions, unused spaces are thought to greatly help local governments to cope with climate change as well as reinforcing their related capabilities. We believe our study will help local governments with decisions relating to unused real estate utilization in the future.

• Journal of the Korean Institute of Landscape Architecture
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• v.18 no.4
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• pp.127-140
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• 1991

The Primary purpose of this study is to investigate factors and variables which have significant effects on user satisfaction with recreational facilities in Taejong-Dae recreational complex, thereby establishing indices of planning and development of urban parks and open space. To test the causal models of this research, the date were gathered by self-administered questionnaires from 967 households in Pusan City which were selected by the multi-stage probability sampling methood. The analysis of the multi-stage primarily consists of two phase : The first analysis dealt exploratory factor analysis which identified major factors involved in satisfaction with recreational activities and facilities in Taejong-Dae recreational complex and the second analysis tested the fit of the causal models of this research by employing LISREL methodology. There are three advantages of using LISREL over other multivariate analysis methods : First, measurement error is allowed and calculated in LISREL, otherwise there is a risk of seriously misleading estimates of coefficients ; Second, LISREL deals with latent variables or unmeasured variables ; Third, it enables to test causal relations among variables. The factors analysis identified that five factors are involved in satisfaction with recreational facilities. The five factors of satisfaction with recreational facilities are space for repose and relaxation, active recreation facilities such as pool and zoo, physical exercise facility, convenience and maintenance facility, and linear facility, and linear facility for walking. The second phase analysis tested the fit of the causal models for satisfaction with recreational facilities to the data and identified statistically significant causal linkage among overall satisfaction with Taejong-Dae recreational complex, other endogenous factors and exogenous variables. Overall fits of both causal models were very good. Among endogenous factors, facility for repose and relaxation. linear facility for walking, active recreation facility, facility for convenience and maintenance were identified as having significant effects on overall satisfaction. Exogenous variables which have significant effects on endogenous variables wer also identified. These significant relationships indicate important factors and variables that should be considered in planning and development of the recreational complex. On the basis of these significant causal relationships, implications for planning and the delovepment of Taejong-Dae recreational complex were suggested.

• Journal of the Korea institute for structural maintenance and inspection
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• v.22 no.3
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• pp.97-102
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• 2018

Conventional PSC I type girders were adversely affected by the self - weight of concrete, anchorage, prestressing. In order to overcome this problem, PSC girder was constructed with a hollow in the web and developed a hollow web PSC type I girder which is applicable to 50 - 70m span by multistage stressing and then actually long span hollow web PSC girder bridge was constructed. In this study, the results of Static Load Test and the Finite Element Analysis of the hollow web PSC I girder bridges were compared and analyzed, and the Load Carrying Capacity and safety of PSC girder bridges were evaluated. The Static Load Test and the numerical analysis results of this bridge showed similar tendency and the behavior of the hollow web PSC I girder was well simulated. The entire girders of the bridges had sufficient Load Carrying Capacity under the live load design condition and the bridges satisfied the safety and confirmed the appropriateness of the construction.

• Journal of the Korea institute for structural maintenance and inspection
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• v.15 no.5
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• pp.75-81
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• 2011

Recently prestressed concrete bridges are generally used instead of reinforced concrete. PSC is more durable than RC because it can reduce crack problems, reinforcement corrosion, leakage and carbonation etc. And also PSC is more effective because there is no crack in tension area, and the entire concrete section is considered in section analysis. And it can reduce section size because vertical component by prestressing force can reduce the shear force. However, using high strength concrete can increase the self weight of bridge because of it's higher density. So the hollowed PPC girder with light weight aggregate can be a alternative. In this study the hollowed PPC girder with light weight aggregate is designed and the performance of hollowed PPC girder is evaluated by experimental tests as well as numerical analysis. As a result, The hollowed PPC girder of light aggregate behaved fully elastically under service load of 110kN, and the plastic behavior was showed after elastic behavior through experimental test, and it can be also estimated by numerical analysis.

• Journal of the Korea institute for structural maintenance and inspection
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• v.13 no.2 s.54
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• pp.189-198
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• 2009

In this paper, the performance of bridge health monitoring system(BHMS) installed in suspension bridge was tested and the field loading tests have been done by using BHMS to get quantitative results on the response of bridge. Before the field tests, globally structural analysis was performed to verify and estimate the test results and the static and dynamic field loading tests were carried out. Depending on comparison with results of field tests and structural analysis, field tests results were evaluated as 30%~50% less than structural analysis results, so it was confirmed that the bridge has excellent structural performance. Therefore field test results were measured within an acceptable error range, so it is verified that the BHMS in the bridge has been reliable and efficient.