• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.7
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• pp.1701-1707
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• 2010

This study is intended for implementing the system environment that can help integrate and retrieve various types of data in real-time by providing semantic interoperability among distributed heterogeneous information systems. The semantic interoperability is made possible by providing a TMDR(Topicmaps Metadata Registry), a set of ontologies. TMDR, which has been made by combining MDR(MetaData Registry) and TopicMaps and storing them in the database, is able to generate distributed query and provide efficient knowledge. MDR is a metadata management technique for distributed data management. TopicMaps is an ontology representation technique that takes into consideration the hierarchy and association for accessing knowledge data. We have created TMDR, a kind of ontology, that is fit for any system and able to detect and resolve semantic conflicts on the level of data and schema. With this system we propose a query-processing technique to integrate and access heterogeneous information sources. Unlike existing retrieval methods this makes possible efficient retrieval and reasoning by providing association focusing on subjects.

• Journal of the Korean Society for Railway
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• v.19 no.4
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• pp.555-563
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• 2016

Line capacity of railways is a core criterion to decide maximum trips in accordance with traffic demand and a priority in railway investment to improve transportation capability. Particularly, because two operators will start revenue services in the HSR from mid-2016, the line capacity should be carefully calculated and controlled to avoid conflicts between the maximum number of KTXs, and the number needed to guarantee the effective competition of the operators. Meanwhile, there have been many arguments about calculating the line capacity, because this number is affected by the number of trips by train types, stopping pattern and dwell time in each station, journey time, crossing or passing, safety headway between trains, etc. To deal successfully with these kinds of problems, this study proposes a simulation method to calculate the line capacity that considers train operation according to the operator's service policies.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.22 no.2
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• pp.161-170
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• 2004

This study is to standardize framework data model in facility area. This study focuses on standization of application oriented data model in facility management and other facility applications. In order to outline the framework data model in facility area, building and cultural sub-themes which have been proposed in a previously conducted research have initially been considered. Also various international and domestic standards in framework data for facility area have been analyzed to identify appropriate feature classes and types. In order to avoid future conflicts, many facilities experts from various facility areas including facility database and facility manarement have provided their inputs in this study based on their viewpoints and prospects. As a results of this study, we are developed to features and data model or framework data in facility area.

• The Transactions of the Korea Information Processing Society
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• v.6 no.2
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• pp.261-274
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• 1999

Recently, automated business processing systems, so called workflow systems, have been studied. have been studied. even though each task has noticible duration inherently, most of previous models regard it as a simple finite automation where state transitions occur instantly. In this paper, we propose a modeling method for workflow each of whose component task has minimum processing time and due-date. Firstly we provide a priority function to choose the proper alternatives when tasks fail before their due-date. The priority function considers the time-relevant factor and the semantic compatibility level to decide the best alternative. secondly, we identify six different types of execution requirements for tasks with noticible durations. They are serial, parallel, simultaneous start simultaneous termination, interleaved and nested dependency. Note that previous models deal with only serial execution and parallel execution. Lastly, we also propose graph-based methods to detect logical conflicts in time constraint-based workflow specifications.

• Korean Journal of Social Welfare
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• v.51
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• pp.29-61
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• 2002

This study was designed to find out the determinants of types of bullying behavior, and the effects of types of bullying behavior on the bullies. For this purpose, a hypothetical model which explains the relationships among 6 environmental factors, 5 types of bullying behavior, and 5 outcome variables for the bullies was developed. Using the data collected from 177 junior and high school students who have bullied the other students, the hypothetical model was tested. For data analysis, a path analysis was used, and the best-fitting model was found (df=78, GFI=0.953, CFI=1.00). As a result of analyzing the model, types of bullying behavior were found to be determined by the different environmental factors: Isolation was determined by 2 factors (feeling of isolation from friends, exposure to bullying), social bullying by 2 factors (lack of support from parents, exposure to bullying), verbal bullying by conflicts with parents, physical bullying by 3 factors (lack of support from parents, exposure to isolation and exposure to bullying), and instrumental bullying by lack of support from parents. On the other hand, the pleasure that the bullies feel after bullying behavior was increased by isolation, verbal bullying and physical bullying, while decreased by instrumental bullying. Guilt feeling was decreased by isolation and instrumental bullying, while increased by physical bullying. Isolation increased the tendency of blaming the victim. Isolation and instrumental bullying increased bullies' self-esteem, while social bullying decreased self-esteem. Verbal bullying increased the extent of bullying, while instrumental bullying decreased the extent of bullying. Based on the findings, the intervention strategies to change the bullies' attitudes toward victim, and to increase social support from the significant others as well as the effective ways to reorganize the school environment in order to reduce and prevent bullying behavior were suggested.

• Journal of Korean Society of Forest Science
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• v.99 no.4
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• pp.447-469
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• 2010

The recent publications of two major works from Ministry of Environment and Korea National Arboretum (Type specimens collected from Korea at the herbarium of the University of Tokyo, five volumes) and National Institute of Biological Resources (Korean type specimens deposited in foreign herbaria and museums, two volumes excluding other animal groups) on Korean vascular plants have resulted in discrepancies needing either correction or clarification. The former published the results of a portion of T. Nakai's collections deposited at TI, while the latter produced the results about collections of G. Koidzumi's, J. Ohwi's, and S. Kitamura's at Kyoto University and of E. H. Wilson's and H. Leveille's at Harvard University. Consequently some omissions, discrepancies, and conflicts resulted, such as the inclusion of conflicting designations of lectotype, isotype, syntype or holotype, erroneous citations of publications, and misinformation. Suh et al.'s publications about type specimens of Korean plants deposited at TI showed 47 conflicting typifications and 20 typographical and other errors. Type information offered by Yim et al. were discussed, and 75 conflicting typification and 30 typographical and other errors from these two volumes were also brought to notice. It is clear that Suh et al. and Yim et al. merely provided type information without consulting original description of each plant species. It is apparent that all these conflicting designation of types, erroneous citations of publications, and other types of misinformation were as a result of the disregard of original citation and the ignorance of basic type concept.

• Journal of Korean Public Health Nursing
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• v.15 no.2
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• pp.398-411
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• 2001

The separation system of pharmacy and clinic has begun on the purpose of preventing drug misuse and abuse since July 1st of 2000. The system revealed some conflicts between doctors. pharmacists and consumers. Consequently pharmaceutical law and related policies undergone some change. Now in an early period of the implementation of the system, the necessity to examine relevance of those policies and law enforcement to medical doctors' prescriptions pattern evolves. This study tries to verify the pattern through a field study. For the purpose, 930 prescriptions collected in May of 2001, from a pharmacy located in Gangnam-gu in Seoul, were analysed. The prescriptions were issued from several clinics: 459 prescriptions from otorhinolaryngological clinic(ENT), 177 from internal medicine clinic(IM), 130 from ophthalmic clinic(Opt), 52 from obstetric and gynecologic clinic(OB & GY), and 112 from miscellaneous clinics. ENT, IM, Opt. OB & GY are situated in a clinic building of 40m distance. The general findings are following: 1) $88.8\%$ of the total patients came from 5clinics in nearby single clinic building. 2) Average prescribing days were 6.2 days and the average number of used drugs were 4.0 drugs, i.e. 2-4 times of WHO criteria 1-2 drugs. 3) Use of antibiotics in the oral administration drugs rated $71.8\%(WHO: \;22.7\%)$ 4) Use of injection rated $31.3\%(WHO:\;17.2\%)$ 5) $96.2\%$ of the patients use multiple antibiotics in the injection and oral administration together. 6) The patients had multiple disease : ENT patients 1.7 disease and 1M patients has 2.7 disease in average and several regular prescribing types evolved particularly in the ENT prescription. With this result we found that drugs. especially antibiotics are still abused a lot, and there were significant differences in the number of used drugs and prescrbing days between the clinics. It implies somes differences of the preparation work and time for pharmacists. And preparation can be done in advance by pharmacists' own efforts through noticing regular prescribing types. The study suggests the followings: 1) Patient counseling should be done to minimize the incidence of adverse events. 2) The enforcement of the standardized differential preparation price system should be reconsidered. 3) Preparation of typical regularly appeared prescription in advance. which is regarded as 'a prearranged work between doctors and pharmacists' and has been prohibited should be reconsidered. 4) Drug utilization review program should be established to prevent drugs abuse. especially antibiotics abuse.

• Korean Journal of Culture and Social Issue
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• v.24 no.3
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• pp.491-518
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• 2018

The purpose of this study was to compare with qualitative research articles on the grandparents' parenting experiences of grandchildren between those with primary responsibility and those with partial responsibility in Korean Journals since 2000. For the purpose of the study, this study analyzed research of 43 qualitative research articles(19 grandfamilies, 24 custodial grandparents), with respect to their objectives, basic annual trends, methodology, subject, category of content. The major findings are as follows. Firstly, the annual number of articles of grandfamilies are on an decreasing trend, while those of custodial grandparents are on an increasing trend. Secondly, the phenomenology and interview are frequently used in research of the two types of family. Thirdly, 6~10 participants were the most frequent number of participation in all of the family. However, demographics, caring circumstances, physical circumstances were significantly different in two types of family. Fourthly, caring categories of contents(the meaning, positive factor, conflict factor and resolution of conflicts) were also similar, while these were significant diffent in specific psychological experiences in all of the family. Based on the findings of this comparative study, suggestions for pratical services and implication for future study were proposed.

• Journal of Science Education
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• v.44 no.1
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• pp.1-14
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• 2020

In this study, we analyzed the written and drawn explanations of thirty elementary school pre-service teachers in order to examine their perception on the seasonal length of day and night. The main findings are as follows: First, pre-service teachers used the most common term in the description of the texts, such as meridian altitude, axis of rotation, and revolution, and there were more misconceptions in the drawn explanation than in the written explanation. Second, by analyzing the pre-service teachers' perceptions by combining written and drawn explanations, it is possible to detect scientific errors that the distance between the Earth and the Sun is closer when the axis of rotation is tilted in relation to the revolution and seasonal changes due to changes in the orbital radius of the Earth. In addition, there have been types of explanations such as seasonally changing meridian altitudes related to the rotation of the Earth but no change in the location of the Sun. Based on the results of the analysis, we discussed the lack of experience in constructing an explanatory system of specific phenomena using scientific knowledge, lack of observational experiences about natural phenomena, and lack of exposure to other explanatory systems that cause cognitive conflicts. We hope that it will be concrete and practical help to improve the understanding of pre-service teachers in the science domain of primary teacher training program.

• Journal of the Korea Concrete Institute
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• v.28 no.4
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• pp.435-444
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• 2016

In Korea, approximately 48% of all households live in apartments, which are a form of multi-unit dwellings, and this figure increases up to 58%, when row houses and multiplex houses are included. As such, majority of the population reside in multi-unit dwellings where they are exposed to the problem of floor impact noise that can cause disputes and conflicts. Accordingly, this study was conducted to manufacture a high-weight, high-stiffness foamed concrete in order to develop a technology to reduce the floor impact noise. For the purpose of deriving the optimum mixing ratio for the foamed concrete that best reduces the floor impact noise, the amounts of the foaming agent, lightweight aggregate and binder were varied accordingly. Also, the target characteristics of the concrete to be developed included density of over $0.7t/m^3$, compressive strength of over $2.0N/mm^2$ and thermal conductivity of under 0.19 W/mK. The results of the experiment showed that the fluidity was very excellent at over 190 mm, regardless of the type and input amount of foaming agent and lightweight aggregate. The density and compressive strength measurements showed that the target density and compressive strength were satisfied in the specimen with 50% foam mixing ratio for foamed concrete and in all of the mixtures for the lightweight aggregate foamed concrete. In addition, the thermal conductivity measurements showed that the target thermal conductivity was satisfied in all of the foamed concrete specimens, except for VS50, in the 25% replacement ratio case for Type A aggregate, and all of the mixtures for Type B aggregate.