• The Journal of Natural Sciences
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• v.6 no.1
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• pp.103-108
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• 1993

Zeolites were discovered as a natural mineral more than two hundred ago. In the beginning, the mineral was used as ion-exchange material and adsorbent. After the end of World War II , however, a variety of zeolites have become available in large amounts because of the establishment of low temperature synthesis and the discobery of natural zeolite deposits of sedimentary origin. Various uses of xeolite were developed utilizing the unique crystal strucrure and function of these minerals. In connection with this development remakable progress has also been made in basic stuides on the related geology and mineralogy, crystallization from sols and gels, structure, ion exchange, adsorption and cataiysis. As a result, zeolites, which had been known only as mineral specimens displayed in museums. established a firm position among the high-technology masterials with excellent functional capabilities.

• Journal of the Korean Society for Railway
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• v.19 no.2
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• pp.251-261
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• 2016

In this paper, changes of railway-related organization during the Japanese colonial period were studied indepth. The railway-related organizations were expanded from the Railway Management Bureau in 1906 (Residency-General). In 1910, this bureau changed to the General of Chosun Railway Bureau (Government-General) and the Chosun Railway Bureau (Government-General). In the 1940's, it developed into an organization called the Transport Bureau, dealing with the whole transport service. The number of employees in the railway sector increased along with the expansion of the organization and the establishment of a training institution for better recruitment. After examining the period of the construction of railway and connection system, which is deeply related to the railway organizations of the Japanese colonial period, this paper analyzes the transformation process of railway-related laws and organizations. Furthermore, this paper finds common characteristics and differences between railways in a comparison of three countries: Chosun, Japan and Taiwan.

• Convergence Security Journal
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• v.12 no.2
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• pp.107-113
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• 2012

Recently, according to the establishment of personal information protection Act, the public and private organizations are taking a step to protect personal information rights and interests by employing the technical methods such as the access control mechanism, cryptography, etc. The result of the personal information leakage causes a serious damage for the organization image and also has to face with the responsibility by law. However, applying access control and cryptographic approach on the personal information item for every connection to large database system causes significant performance degradation in a large database system. In this paper, we designed and implemented the light weight system using JVM (Java Virtual Machine) for the Oracle DBMS environment which the concurrent transaction occurs many, thereby the proposed system provides the minimum impact on the system performance and meets the need of personal information protection. The proposed system was validated on the personal information protection system which sits on a 'A' public organization's portal site and personnel information management system.

• The Journal of the Society of Korean Medicine Diagnostics
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• v.14 no.1
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• pp.1-14
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• 2010

Backgrounds : Bojungikgitang is one of the most common herbal prescriptions in Oriental Medicine, and it is highly recommended prescription for Nogwonsang syndrome. The Author developed Nogwonsang questionnaire for quantitative evaluation. Nogwonsang questionnaire is consisted of causes that induce fatigue, symptoms that directly associated with fatigue, and secondary symptoms that is induced from fatigue. Purposes : This study aims to verify whether the Bojungikgitang Questionnaire has causality and meaningful path structure by path analysis. Methods : 242 patients from 12 OMD clinics participated in this study. The patients executed a question investigation in the object. Factor analysis was conducted for extraction of factor and abridgment of items. Path analysis was conducted to verify path structure. SPSS 15.0 for Windows and AMOS 7.0 were used for statistical analysis. Results : Overwork factor explains fatigue factor. Coefficient is 0.771. Fatigue factor explains digesting and cold factor. Individually coefficient is 0.632 and 0.465. Model fit is $X^2=61.395$(df=51), GFI=0.960, AGFI=0.939, NFI= 0.924, CFI=0.986, RMSEA=0.029. Path structure is proved to be significant. Conclusions : Further research is needed Gold standard of Nogwonsang. Establishment of Gold standard leads and the collection of data and the research which are objective are possible. Connection of the clinical indexes which are objective on the paperweight outside and leads and the development of the diagnosis tool which is fixed quantity is demanded.

• Journal of KIISE:Computer Systems and Theory
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• v.28 no.9
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• pp.469-478
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• 2001

It is difficult to test a distributed system because of the task of controlling concurrent events,. Existing works do not propose the test sequence generation algorithm in a formal way and the amount of message is large due to synchronization. In this paper, we propose a formal test sequence generation algorithm using logical clock to control concurrent events. It can solve the control-observation problem and makes the test results reproducible. It also provides a generic solution such that the algorithm can be used for any possible communication paradigm. In distributed test, the number of channels among the testers increases non-linearly with the number of distributed objects. We propose a new remote test architecture for solving this problem. SDL Tool is used to verify the correctness of the proposed algorithm and it is applied to the message exchange for the establishment of Q.2971 point-to-multipoint call/connection as a case study.

• Journal of Industrial Convergence
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• v.17 no.3
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• pp.39-49
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• 2019

This study, as a study on building platforms for smart campus ecosystem, took an approach that reflected the needs of various stakeholders of smart campus, and focused on functions to help them strengthen their competitiveness and advance into society by focusing on the learning of the most important university student users, college life, and social connection. First, we looked at the theories related to smart campus construction through prior research, and next, through domestic and international environmental analysis and trend analysis, we designed and presented a target model for e-portfolio focusing on core competency development and support system for Industry-Academic Cooperation, and proposed the main point for continuous smart campus development model.

• The Journal of Sustainable Design and Educational Environment Research
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• v.20 no.3
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• pp.11-24
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• 2021

The purpose of this research is to investigate the current status of edu-tech trends and contents of domestic and foreign private companies in order to successfully establish the K-EDU integrated platform, analyze the connection between future teaching-learning methods and learning styles, and provide basic materials to help frontline schools easily link teaching-learning methods to the most suitable contents per subject. To this end, a literature survey and on-site interviews with officials from companies participating in the 2021 Education Fair provided results of investigating 116 edu-tech contents produced by a total of 68 companies, including 22 overseas (28 contents) and 46 domestic (88 contents) ones, on whether they mutually match future teaching-learning methods and learning styles.

• Journal of The Korea Institute of Healthcare Architecture
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• v.26 no.4
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• pp.15-26
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• 2020

Purpose: The purpose of this study is to derive a plan to establish a more sophisticated master plan so that the direction of master plan study can be sustained in the mid to long term. Methods:: Compare and analyze the differences between the master plan and the design to identify causes and problems. First, after establishing the master plan, compare the expansion area, net area per bed, and service area with the design drawing of the first project to determine the degree of recovery to the level required by the recent medical environment. Second, the possibility of responding to future internal changes is reviewed by comparing and analyzing the arrangement and connection method of extension buildings. Third, comparing the difference between the project following the first project and the phased of masterplan. Results: The first one is that continuous participation of person or group with high understanding of the master plan. Second, establishing a master plan and proceeding with the project through the determination of the correct business budget. Third, a specific area of the mechanical and electrical room suitable for the size and purpose of the hospital should be presented, and research on the arrangement method should be conducted. Finally, the feasibility of the hospital's own plan for securing parking facilities should be accurately investigated. Implications: It is important for the hospital to recover from the past to the present and respond to the future that the direction of the master plan continues after the establishment.

• Journal of the Institute of Convergence Signal Processing
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• v.23 no.1
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• pp.37-43
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• 2022

Drones, one of the 4th industrial technologies that are expanding from military use to industrial use, are being actively used in the search missions of the National Police Agency and finding missing persons, thereby reducing interest in a wide area and the input of large-scale search personnel. However, legal review of police drone operation is continuously required, and the importance of advanced system for related operations and analysis of captured images in connection with search techniques is increasing at the same time. In this study, in order to facilitate recording, preservation, and monitoring in the concept of precise search and monitoring, it is possible to achieve high efficiency and secure golden time when precise search is performed by constructing spatial information based on photo rather than image data-based search. Therefore, we intend to propose a spatial information construction technique that reduces the resulting data volume by adjusting the unnecessary spatial information completion rate according to the size of the subject. Through this, the scope of use of drone search missions for large-scale areas is advanced and it is intended to be used as basic data for building a drone operation manual for police searches.

• The Journal of the Korea Contents Association
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• v.22 no.7
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• pp.318-331
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• 2022

The government has been promoting suicide prevention policies, but the elderly suicide rate has still not improved. This study focused on the role of local governments in solving suicide problems and analyzed three-year data from 2015 to 2017 at local governments level to investigate the relationship between suicide prevention policies and elderly suicide rates. Multiple regression analysis and logistic regression analysis was conducted to control social capital factors, demographic factors, and medical use factors that can affect the elderly suicide rate. As a result of the analysis, it was confirmed that suicide prevention ordinances were enacted and suicide prevention centers were established in areas with high suicide rates. In areas with high suicide rates, the suicide rate decreases if the elapsed period is long after the establishment of the center. From the perspective of suicide rates, it was analyzed that the local welfare support system was more affected. Accordingly, it was confirmed that the suicide prevention policy should be established in connection with the reinforcement of welfare policies