• Journal of the Korea Society of Computer and Information
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• v.24 no.12
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• pp.85-92
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• 2019

Companies can identify user groups or consumption trends by collecting and analyzing opinions of many users on special subjects or their products as well as utilize them as various purposes such as predicting some specific trends or marketing strategies. Therefore current analyzing tools of social media have come into use as a means to measure the performances of social media marketing through network's statistical analysis. However these tools require expensive computing and network resources including burden of costs for building up and operating complex software platforms and much operating know-how. Hence, small companies or private business operators have difficulty in utilizing those social media data effectively. This paper proposes a framework applied into developing analysis system of social media. The framework could be set up and operate the system to extract necessary social media's data. Also to design the system, this study suggests a meta-model of proposed framework and to guarantee completeness and consistency, a formal specification of meta-model by using Z language is suggested. Finally, we could verify the clearness of framework's design by performing Z model checking of formal specification's output through Z-EVES tool.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.27 no.4
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• pp.175-204
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• 2016

This study drew four essential literacies for adult's daily life through analyzing the concepts of the 'skill' in PIAAC, and also investigated current literacy programs for adult users in Korean public libraries. Finally on those results, this study suggested a literacy program model with an illustrated action plan for adult users of pubic libraries. A suggested model is planed an intergrated program that make users can acquire four essential literacies through participating in a single program. This model is characterized by self-directed learning by the users and can be applied freely to various subjects and user groups. The model consists of six components and seven steps. Six components are target, theme, strategy, tool, material, assessment. Seven steps are targeting, selecting theme, strategy planning, documentation, action, assessing. This model is named $6{\times}7$ model on the basis of components and steps.

• Journal of Technologic Dentistry
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• v.29 no.2
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• pp.173-180
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• 2007

There was a great problem about the deposition between materials of a different kind at the beginnings of the introduction of porcelains, however, thereafter the deposition efficiency was settlded to the sufficient level of all user thanks to effort to have studied by many scholars and clinical authorities. But in a clinical process, as the difference of designs has an effect on fractures of porcelains, this researcher divided them into 4 groups of A: 1 mm, B: 2 mm, C: 3 mm, and D: 4 mm, and made 40 pieces to each 10 as the test samples to consider a length axis of tooth for studies in accordance with a position of a finishing line to meet between porcelain and metal at the contact point at the adjacent side to a metal porcelain. The sample materials are those to be use at the open market and the test samples wer completed by the same manufacturing technique to that of existent metal porcelain tube. s a result of the strength test on fractures, the average value is as in the following, A: 1 mm - 8.5bar, B: 2 mm - 10.5bar, C: 3 mm - 14.3bar, and D: 4 mm - 15.0bar. In case of the metal porcelain tube, the more faraway to process parts of metal and porcelain from the contact point of adjacent side has the stronger strength of fractures, Accordingly, the research shows that it had better to keep off more than 3 to consider a ledngth axis of tooth.

• Journal of Family Resource Management and Policy Review
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• v.18 no.1
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• pp.141-162
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• 2014

The purpose of this research is to suggest some measures to improve policy issues by analyzing policy related to a child care service program in the community. Gilbert and Terrell's social policy analysis framework is used to analyze an after-school care service program for elementary school children. Furthermore, the Elementary Care Class(including the After-school Program), Youth After-school Academy, and Community Child Center, referred to as public care services, are employed to analyze community care service programs for children. The Elementary Care Class, Youth After-school Academy and Community Child Center are very similar in terms of the contents and application of the care service program for children, and mainly serve children in low-income groups. In addition, although user overlapping is an inevitable problem because the operating time of the Elementary Care Class and After-school Program coincides with that of the Youth After-school Academy and Community Child Center, it is structurally very hard to adjust the content of service, operating time, and so on because of differences in the delivery system for each program. Therefore, it is necessary to generate a unified delivery system to manage after-school care service programs for children and create a new special control tower to solve these problems. Furthermore, it is needed to extend the services to children from general double-income family, which is a blind spot of the care service.

• Journal of Korean Library and Information Science Society
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• v.42 no.3
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• pp.45-77
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• 2011

In this study, by performing a survey targeting public libraries' users, we analyzed the most common path to acquire health information, the users' perception about if public libraries are needed to provide CHI services, and the factors that affect users' perceptions. The results are as follows: 1) About 90% of Korean public libraries' users do not take into account public libraries as the acquisition path for CHI resources. 2) About 60% of users thought that public libraries are needed to provide CHI services. 3) The factors that affect users' perception for the necessity of public libraries providing CHI services, were their interest in health and hours of using the internet per day. 4) In addition, we analyzed differences in perception between librarians and patrons about the necessity of public libraries providing the CHI services. The result showed that there was no significant difference in their perceptions, and both groups strongly felt that public libraries must provide the CHI services.

• Journal of Korean Academy of Nursing Administration
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• v.11 no.4
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• pp.401-414
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• 2005

Purpose: This study was to evaluate the utilization of health care service and to provide supportive data for health care policy making in one urban area in Korea. Method: This study tested the significance of public health service using the database of an university hospital and public health center from Feb. 2000 to Dec. 2004. Data were analyzed by multidimensional analysis and data mining technique and produced the information on the classification of utilization characteristics by main disease and the total cost of use and disease association with the users of the public health center. Results: The Results were as follows: 1) Top 10 diseases in the area accounted for 22.4% of total frequency for the most recent 5 years in university hospital, while 59.0% in public health center. 2) There were significant correlations between university hospital and public health center user's insurance type and place of residence: It showed higher use of public health center for free service beneficiaries residing in Seoul than residents in nearby or local area. The medical insurance types for hospital users were more various than those for public health center users. 3) The use of hospital for patients of hypertension, diabetes mellitus and hyperlipidemia was tended to concentrate in mostly autumn and winter since August 2000, while the cost of using public health center for those patients has been steadily reduced since July 2000. 4) As a result of cluster analysis, there were classified into three homogeneous groups according to the total cost of using public health service, age, and the frequency of use. 5) The association analysis on patients with chronic disease in public health center produced a detailed information on accompanying diseases related to the incidence rate of disease of high frequency due to aging, information on drug abuse and immune disease. Conclusion: The health care policy for local community should be evaluated continuously. And the policy to build an integrated data warehousing by public health indicator system and to enhance the faithfulness of data is required.

• Journal of Korea Multimedia Society
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• v.11 no.9
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• pp.1213-1226
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• 2008

A recommender system supports people in making recommendations finding a set of people who are likely to provide good recommendations for a given person, or deriving recommendations from implicit behavior such as browsing activity, buying patterns, and time on task. We proposed new recommender system which combined SOM(Self-Organizing Map) neural networks with the Collaborative filtering which most recommender systems hat applied First, we segmented user groups according to demographic characteristics and then we trained the SOM with people's preferences as ito inputs. Finally we applied the classic collaborative filtering to the clustering with similarity in which an recommendation seeker belonged to, and therefore we didn't have to apply the collaborative filtering to the whose data set. Experiments were run for EachMovies data set. The results indicated that the predictive accuracy was increased in terms of MAE(Mean-Absolute-Error).

• Journal of Advanced Navigation Technology
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• v.18 no.6
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• pp.594-599
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• 2014

The routinized wireless devices such as smart phone have promoted to expand the use of IEEE 802.11 groups. The challenge environments of the wireless network utilizes effectively and user-oriented seamless services that handover is the most desirable issues under the wireless circumstance. In data center software defined network (SDN) has provided the flow routing to reduce costs and complexities. Flow routing has directly offered control for network administrator and has given to reduce delay for users. Under the circumstance of being short of network facilities, SDNs give the virtualization of network environments and to support out of the isolation traffic conditions. It shows that the mechanism of handover makes sure seamless services for higher density of the network infrastructure which is SDN to support network service re-configurable.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.620-622
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• 2013

Real-time Video communication technology using a Web browser today is on the rise. Video communication system The existing A method of providing an Video communication via a program for a specific server on the service provider, respectively. By using the server of the company that provides an Video communication solutions, were limited by using its own network that you can use to build a separate server for performing Video communication another, using specific software and user groups it was a mechanism for using the Video communication environment. In addition, must be installed separately and ActiveX, plug-in and, use of the service has become possible. Therefore, in this paper, utilizing the real-time Video communication Web-based technology without installing the plug-in, real-time through a Web browser or Active-X of another using a script HTML5 and the Web on the Internet Using HTTP in an environment in the Internet is possible, I've implemented a system capable of Video communication.

• The Transactions of the Korea Information Processing Society
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• v.5 no.5
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• pp.1246-1256
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• 1998

MIB(Management Information Base), one of the key components of network management system, is a conceptual repository for the information of the various managed objects. MIB stores and manages all the structural and operational data of each managed resources. Therefore, MIB should be protected properly from inadvertant user access or malicious attacks. International standard ISO/IEC 10164-9 describes several managed object classes for the enforcement of MIB security. Those managed object classes described access control rules for security policy. But the exact authorization procedures using those newly added managed object classes are not presented. In this paper, we divide managed object classes into two groups, explicit and implicit ones, and describe the access authorization procedure in Z specification language. Using Z as a description method for both authorization procedure and GDMO's action part, the behaviour of each managed object class and access authorization procedure is more precisely and formally defined than those of natural language form.