• Asia pacific journal of information systems
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• v.8 no.1
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• pp.43-64
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• 1998

Cooperative query answering is a research effort to develop a fault-tolerant and intelligent database system using the semantic knowledge base constructed from the underlying database. Such knowledge base has two aspects of usage. One is supporting the cooperative query answering process for providing both an exact answer and neighborhood information relevant to a query. The other is supporting ongoing maintenance of the knowledge base for accommodating the changes in the knowledge content and database usage purpose. Existing studies have mostly focused on the cooperative query answering process but paid little attention to the dynamic knowledge base maintenance. This paper proposes a multi-level knowledge representation framework called Knowledge Abstraction Hierarchy(KAH) that can not only support cooperative query answering but also permit dynamic knowledge maintenance, On the basis of the KAH, a knowledge abstraction database is constructed on the relational data model and accommodates diverse knowledge maintenance needs and flexibly facilitates cooperative query answering. In terms of the knowledge maintenance, database operations are discussed for the cases where either the internal contents for a given KAH change or the structures of the KAH itself change. In terms of cooperative query answering, four types of vague queries are discussed, including approximate selection, approximate join, conceptual selection, and conceptual join. A prototype system has been implemented at KAIST and is being tested with a personnel database system to demonstrate the usefulness and practicality of the knowledge abstraction database in ordinary database application systems.

• Journal of the Korean Society of Food Culture
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• v.17 no.4
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• pp.411-423
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• 2002

The purpose of this study was to survey the concern for health, nutrition knowledge, and nutritional attitude of the elementary school children's mothers, to investigate the correlations among them, and to estimate their effects on the growth of their children. The questionnaire was answered by 780 mothers in the Busan area. The concerns over health and nutritional attitude were above average in all items. The perception and accuracy with respect to nutrition knowledge were 90.3% and 77.0%, respectively, and the mean score of the nutrition knowledge was 17.5 on a basis of twenty-five. This indicates that the subjects had a comparatively deep concern for health and good knowledge of nutrition, and professed a relatively desirable attitude. These results indicate a desirable dietary attitude for children as well as parents. The correlation coefficients between nutrition knowledge and a concern for health, and between nutrition knowledge and nutritional attitude were very low. This suggests that the subjects' knowledge of nutrition does not develop into practice. The correlation coefficient was high (r=.610) between the concern for health and the nutritional attitude. In conclusion, the nutrition education program for mothers should be developed to add good practice to knowledge, thus increasing the concern for health, correcting their faulty knowledge of nutrition, teaching the good nutrition, and taking a practical attitude toward the use of their present nutritional knowledge.

• Journal of the Korean Society for information Management
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• v.20 no.4 s.50
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• pp.211-232
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• 2003

This study introduces the integration-style knowledge management of digital libraries in extended library concept, for integrated knowledge system which can provide various types of knowledge, and presents the knowledge-rump-type knowledge management model. By applying the model to the cases of several institutions, the processes and levels of extension are analyzed, and the important tasks for activating knowledge management are suggested. The knowledge pump embodies ideal roles of the digital libraries that activate the acquisition and distribution of knowledge. It is significant that the digital libraries, which used to remain as a simple application of information technology, not only present logical basis and way for extending their roles and areas, but also explain the implementation methodologies.

• Knowledge Management Research
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• v.5 no.2
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• pp.53-65
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• 2004

Organizations continue to invest heavily in the acquisition of knowledge management systems (KMS). The overriding belief is that KMS-task fit will become more productive. A survey of users was conducted to better understand the factors that affect KMS-task fit to better explain KMS performance perspective on knowledge circulation process. This involves stating the research hypotheses among the following constructs: the characteristics of KMS, the fitness of task characteristics, and KMS performance. The findings indicate that the characteristics of KMS positively affect the fitness of task characteristics. The fitness of task characteristics are affecting KMS performance. The results of this study suggest that task-technology fit could be the basis for a strong diagnostic tool to evaluate whether KMS in a given organization are meeting user needs.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.42 no.2
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• pp.36-48
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• 2019

As the importance of Knowledge Management System (KMS) in the military increases, Republic of Korea Army (ROK Army) developed Army Knowledge Portal. Although the members in the military are encouraged to use the portal, few members currently use it. This study was conducted to find variables to predict the user's intention to use the portal, which contributes to activating the use of Army Knowledge Portal in the army. On the basis of Technology Acceptance Model (TAM), ten variables such as perceived ease of use, general information security awareness, information security awareness, expectation for external rewards, expectation for relationships, sense of self-worth, attitude toward compliance with security policy, attitude toward knowledge sharing, intention of non-combat knowledge sharing, and intention of combat knowledge sharing were considered as independent variables. 105 participants on active duty who currently use or have experience to use the portal participated in this study. The results indicated that general information security awareness and information security awareness increases compliance with the information security policy. In addition, the attitude toward knowledge sharing is enhanced by expectations for relationship and sense of self-worth. Based on the results, the authors propose the need for policy alternatives to reinforce the reward system and security policy, which activates the use of Knowledge Portal Service for ROK Army.

• Korean Journal of Childcare and Education
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• v.12 no.4
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• pp.131-149
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• 2016

Teacher's practical knowledge is potentially relevant to the teaching practice in his/her classroom. The research explored early childhood teachers' practical knowledge of 'curriculum' via conceptual metaphors. The participants (N=348) completed a prompt, "Curriculum is like A because B" and then the metaphors were analyzed according to the procedure proposed by Moser (2000). The analysis found that 8 themes (i.e. 'educational basis', 'learning opportunity', 'educational material', 'difficulty', 'change', 'pre-determination', 'discordance', and 'reconstruction') were the underlying conceptions signified in those metaphors. The implications regarding early childhood teachers' practical knowledge were discussed on the perspective of post-modern curriculum. Moreover, it recommended the practical knowledge based approach for early childhood teacher education, and transformation of current policy for program evaluation relevant to curriculum conceptualization.

• Journal of the Korean Operations Research and Management Science Society
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• v.17 no.2
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• pp.145-162
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• 1992

This paper proposes two design principles for expert systems to solve a stock market timing (SMART) problems : machine knowledge and fuzzy post-adjustment, Machine knowledge is derived from past SMART instances by using an inductive learning algorithm. A knowledge-based solution, which can be regarded as a prior SMART strategy, is then obtained on the basis of the machine knowledge. Fuzzy post-adjustment (FPA) refers to a Bayesian-like reasoning, allowing the prior SMART strategy to be revised by the fuzzy evaluation of environmental factors that might effect the SMART strategy. A prototype system, named K-SISS2 (Knowledge-based Stock Investment Support System 2), was implemented using the two design principles and tested for solving the SMART problem that is aimed at choosing the best time to buy or sell stocks. The prototype system worked very well in an actual stock investment situation, illustrating basic ideas and techniques underlying the suggested design principles.

• Journal of the Korean earth science society
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• v.38 no.5
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• pp.367-377
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• 2017

The purpose of this research is to investigate characteristics of science content knowledge and pedagogical content knowledge shown in the primary school science classes. Through analysis of classroom teaching, explore the features and differences between primary and secondary school science PCK. Using open-ended interviews with the teachers and group discussions on a regular basis to analyze and compare classes of five primary school teachers, the relationship between CK and PCK. Regardless of the school level the teacher's PCK and professionalism is required with varying focus and emphasis. The features of the primary school teacher's PCK are as follows: Firstly, elementary teach secondary teach content, teachers value pedagogical knowledge (PK) content knowledge (CK). The primary school PCK requires more of understanding of students and teaching methods that to subject areas. PCK be without content knowledge, and the teacher's PCK is subject-specific In addition to the characteristics of PCK in the primary school science teaching, ways to set up professional exchange or collaboration between primary and secondary teachers, and to provide supplementary in-service training focused on content knowledge for primary school teachers.

• Journal of Information Science Theory and Practice
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• v.6 no.1
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• pp.18-30
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• 2018

Interest in open data is continuing to grow around the world. In particular, open government data are considered an important element in securing government transparency and creating new industrial values. The South Korean government has enacted legislation on opening public data and provided diversified policy and technical support. However, there are also limitations to effectively utilizing open data in various areas. This paper introduces an administrative district knowledge model to improve the sharing and utilization of open government data, where the data are semantically linked to generate a knowledge graph that connects various data based on administrative districts. The administrative district knowledge model semantically models the legal definition of administrative districts in South Korea, and the administrative district knowledge graph is linked to data that can serve as an administrative basis, such as addresses and postal codes, for potential use in hospitals, schools, and traffic control.

• Journal of the Economic Geographical Society of Korea
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• v.11 no.3
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• pp.350-361
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• 2008

Place matters to knowledge creation according to the recent literature on economic geography and its related disciplines. This basic insight is not incorrect. But there is some vagueness in the discussions on this theme and there seems to appear a variety of geo-determinism on the competitiveness of SMEs in manufacturing industries. This paper reexamines that thinking on the basis of the realities of innovative manufacturing SMEs in a periphery of Japan, south of Kyushu Island. As a result, it is possible to classify face-to-face contacts into two kinds of communication. One is the communication, through which a supplier of a way of solution (knowledge) can grasp problems (information) of its customer in detail. The other is the communication, through which one can get some new idea. Information can spread world wide, but not always quickly and ubiquitously, because it often contains tacitness and secret, even if a large part of the information are coded in some form. Details of the information can be communicated only with the help of five senses. And it is necessary for the information receiver to listen to the sender carefully with the help of the other senses. In this meaning, tacitness does matter. Knowledge, namely ability to understand and power to bring some idea in practice, is always connected with some place, either at workshop of supplier or of customer in the case of manufacturing industries. However, not places but human beings possess the knowledge, and human beings can be mobile. Therefore, it is not restricted to a place.