• KSII Transactions on Internet and Information Systems (TIIS)
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• v.6 no.10
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• pp.2708-2730
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• 2012

The growing concern for the protection of personal information has made it critical to implement effective technologies for privacy and data management. By observing the limitations of existing approaches, we found that there is an urgent need for a flexible, privacy-aware system that is able to meet the privacy preservation needs at both the role levels and the personal levels. We proposed a conceptual system that considered these two requirements: a graph-based, access control model to safeguard patient privacy. We present a case study of the healthcare field in this paper. While our model was tested in the field of healthcare, it is generic and can be adapted to use in other fields. The proof-of-concept demos were also provided with the aim of valuating the efficacy of our system. In the end, based on the hospital scenarios, we present the experimental results to demonstrate the performance of our system, and we also compared those results to existing privacy-aware systems. As a result, we ensured a high quality of medical care service by preserving patient privacy.

• Industrial Engineering and Management Systems
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• v.6 no.1
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• pp.72-82
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• 2007

Business Rules are formal statements about the data and processes of an enterprise. They present projections of the organization's constraints and ways of working on their supporting information systems. Therefore, their collection, structuring and organization should be central activities within information systems. In an enterprise, business rules are used to represent certain aspects of a business domain (static rules) or business policy (dynamic rules). Hence, regarding problem domains in the organization, business rules are classified into two groups: static and dynamic business rules. The paper introduces a new concept of business rules, Extended Dynamic Business Rule (EDBR) which contains the results of the occurrence of business rule's action. The focus of this paper is in the organizing, defining and modeling of such business rules using Mineau's approach. Mineau's approach is an extension of Sowa's Conceptual Graph theory.

• Annual Conference on Human and Language Technology
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• 1993.10a
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• pp.521-526
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• 1993

다언어간 번역을 지향하는 기계번역시스템의 개발을 위해서는, 의미 이해기반의 해석기술과 언어에 독립적인 생성기술의 설계가 기본이므로 원시언어와 목표언어가 어느 한쪽의 언어지식에 의존하지 않고 언어형식화가 가능한 중간언어 구조를 설정하는 것이 중요하다. 따라서, 한국어를 중심으로 하는 다언어 번역의 설계에서는 비교적 문구조의 정형화가 이루어진 영어와는 달리 어순 배열의 자유도가 높고 조사의 격표시로 문장구조가 결정되는 한국어의 특성을 고려한 해석 및 생성 메카니즘이 필요하다. 본 논문에서는 문장에 내포된 심층의미의 중간 표현으로써, 단어의 의미를 개념화시킨 개념소(Conceptual Primitive)간의 의미적 결합관계를 나타내는 개념 그래프(Conceptual Graph)를 채택하고 설계한 다언어 번역지향의 중간언어기반 번역시스템에 대하여 기술한다.

• The Journal of the Korea Contents Association
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• v.12 no.8
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• pp.1-12
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• 2012

We develop the Spatio-Temporal Graph to imbue the historical context to the situations in a virtual world, and an ontology to enable a structural description of their elements such as the objects, relationships, and activities. In the time dimension the graph models all the temporal phases of the future besides the past and present in a comprehensive manner, and all the spatial aspects in an intuitive but efficient fashion. The overall architecture composing the Physical Layer, Logical Layer and Conceptual Layer which are integrated according to their interrelations allows events occurring in their corresponding worlds to be simulated in historical context. The S-T Graph could be used both to simulate the situations in the virtual world and to realize the knowledge systems of the virtual inhabitants to be used in judging and evaluating those situations. By adding temporal changes to the multi-layered architecture of our virtual world, this model lays a foundation for maximizing the diversity of situations in the simulation of a virtual world.

• Journal for History of Mathematics
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• v.17 no.3
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• pp.109-120
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• 2004

This study investigated three pre-service teachers' mathematical problem solving among hand-in-write-ups and final projects for each subject. All participants' activities and computer explorations were observed and video taped. If it was possible, an open-ended individual interview was performed before, during, and after each exploration. The method of data collection was observation, interviewing, field notes, students' written assignments, computer works, and audio and videotapes of pre- service teachers' mathematical problem solving activities. At the beginning of the mathematical problem solving activities, all participants did not have strong procedural and conceptual knowledge of the graph, making a model by using data, and general concept of a sine function, but they built strong procedural and conceptual knowledge and connected them appropriately through mathematical problem solving activities by using the computer technology.

• Annual Conference on Human and Language Technology
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• 1994.11a
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• pp.211-214
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• 1994

지금까지의 후처리기법은 문장의 의미 정보를 사용하지 않고 대부분 단어만을 생각하기 때문에 잘못 쓰여지거나 인식된 단어라도 사전에 있으면 그대로 받아들이게 된다. 따라서 본 논문에서는 단어로서 구성이 되지 않는 문자열 뿐만 아니라 의미적으로 잘못 사용된 단어까지도 교정해 줄 수 있는 후처리기법을 제시한다. 제시되는 후처리기법은 문장의 의미론 개념그래프로 표현하여 문장에 쓰여진 각 단어가 문장 내에서 의미적으로 유용한지를 밝혀 낼 수 있도록 한다.

• Proceedings of the Korean Information Science Society Conference
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• 2000.04b
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• pp.295-297
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• 2000

전문가 검색 엔진은 전문가 시스템과 같은 목적에서 특정 전문 분야에 대한 특수한 정보를 수집 검색하기 위한 검색 엔진을 내용이다. 본 논문은 전문가 검색 엔진을 만드는 과정에서 초기 작업에 해당하는 웹 정보 수집에 대한 논문이다. 본 논문은 웹 페이지에서 하이퍼링크와 참조되는 웹 페이지에 대한 표면 지식을 이용하여, 홈페이지 그래프를 작성한다. 그리고 나서 홈페이지 그래프와 사전에 미리 준비된 개념 그래프를 이용하여, 웹 페이지 수집 중 특정 전문 분야에 해당하는 웹 페이지인지를 판별하여 사용자가 수집하고자 하는 분야에 대한 웹 페이지만을 수집한다. 본 논문은 이에 대한 개념, 설계 및 구현과 앞으로의 개선 상황을 제안한다.

• The Mathematical Education
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• v.58 no.1
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• pp.79-99
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• 2019

This study is a study to collect information about 'Limitations of functions' related learning. Especially, this study was conducted on three students who can find answers by algebraic procedure in the process of extreme problem solving. Students have had the experience of converting from their algebraic procedures to graphical expressions. This shows how they reflect on their algebraic procedures. This study is a study that observes these parts. To accomplish this, twelfth were teaching experiment in three high school students. And we analyzed the contents related to the research topic of this study. Through this, students showed the difference of expressions in the method of finding limits by using algebraic interpretation methods and graphs. In addition, we examined the connectivity of the limitations of functions problem solving process of functions using algebraic procedures and graphs in the process of converting algebraic expressions to graph expressions. This study is a study of how students construct limit concepts. As in this study, it is meaningful to accumulate practical information about students' limit conceptual composition. We hope that this study will help students to study limit concept development process for students who have no limit learning experience in the future.

• Journal of Digital Contents Society
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• v.9 no.2
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• pp.285-293
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• 2008

In Semantic Web, metadata and ontology for representing semantics and conceptual relationships of information resources are essential factors. RDF and RDF Schema are W3C standard models for describing metadata and ontology. Therefore, many studies to store and retrieve RDF and RDF Schema documents are required. In this paper, we focus on some results of analyzing available query patterns considering both RDF and RDF Schema and classify queries on RDF and RDF Schema into the three patterns. RDF and RDF Schema can be represented as graph models. So, we proposed some strategies to store and retrieve using the graph models of RDF and RDF Schema. We can retrieve entities that can be arrived from a certain class or property in RDF and RDF Schema without a loss of performance on account of multiple joins with tables.

• 한국경영정보학회:학술대회논문집
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• 2007.11a
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• pp.117-122
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• 2007

Recently, as the management environments are changing rapidly and the uncertainty is becoming larger, the needs of internal control for management and IS become stronger. In order to construct a new internal control system for IS, it is necessary to evaluate the former research of the system. This study emphasizes the importance of effective internal control system, presents a conceptual framework for the preceding factors to consider, and verifies empirically the framework. This study sets the organization citizenship behavior, IS innovation resistance, and IT capability from the viewpoint of Socio-Technical system as the preceding factors for the effectiveness of internal control system. A research model, affecting the above factors on IS capability as a mediating variable of the internal control effectiveness for the use of IS, is set up. PLS-Graph 3.0 is used to verify the model. We found that the internal control effectiveness have affirmative effect on information capability, a surrogate variable of the IS effectiveness and a mediation effect is meaningful.