• Proceedings of the Korea Multimedia Society Conference
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• 2001.11a
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• pp.355-358
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• 2001

무선인터넷 사용자들은 HPC, PDA, 스마트폰, 휴대폰 등을 이용하여 다양한 무선인터넷 서비스를 요구하고 있다. 또한 사용자들은 다양한 종류의 무선인터넷 단말기들에 대해 특성과 가격, 편리성, 호환성 등에 많은 관심을 가지고 있다. 이러한 관점에서 본 연구에서는 현재 상용화된 무선인터넷 단말기를 대상으로 가격, 편리성, 확장성, 속도, 기억용량 등을 고려한 무선인터넷 단말기 선정을 위한 의사결정지원 모델을 제시하고자 한다. 이를 위해 본 연구에서는 상이한 속성을 가지고 잇는 특성을 정규화하여 사용자들의 요구를 수요할 수 있는 모델을 제시한다.

• Journal of The Korean Association For Science Education
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• v.37 no.6
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• pp.993-1003
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• 2017

Teachers expect team-based project learning to help students develop collaborative and real-world problem solving skills. In practice, however, students tend to solve problems with simple division of labor, and there is a tendency that learning transfer does not occur in solving problems. The purpose of this study is to develop a collaborative learning model based on the transactive memory system (TMS) and to verify its effectiveness. The collaborative learning model based on the TMS is composed of three stages. The first stage is developing TMS. In this stage, the students learn physics concepts and make knowledge about the expertise of group members through peer instruction. The second stage, activating TMS, is building trust through solving well-defined problems for developing near-transfer. And in the third stage, applying TMS, the students solve an ill-defined problem based on real-world context for practicing far-transfer. Based on this model, a 15-week program including two projects on geometric optics and sound waves was developed and applied to 60 college students. The data for five weeks of one project were collected and analyzed. As a result, the TMS of the experimental group with the TMS-based collaborative learning model improved stepwise. Whereas, the difference between the first week and the last week was statistically significant, while the TMS change of the comparison group using the general project learning model was not significant. Also, the experimental group showed that the learning transfer occurred better in the project than the comparison group. A collaborative learning model based on TMS can be used to learn how students gain synergy through collaboration and how students collaboratively transfer the learned concepts in problem solving.

• 한국노년학
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• v.38 no.4
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• pp.853-869
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• 2018

This study aimed to investigate variables affecting subjective memory impairment in the elderly with benign prostatic hyperplasia. We used 179 survey data collected from the urology department of two metropolitan general hospitals. The subjects were patients with benign prostatic hyperplasia. T-test, one-way analysis of variance, and $Scheff{\acute{e}}^{\prime}s$ test were performed to identify differences among variables. Pearson's correlation-coefficient and stepwise multiple regression were used to identify variables that affect subjective memory impairment. This study revealed that lower urinary tract symptom and activities of daily living were statistically significant variables, with an explanatory power of 30.0%. The lower urinary tract symptom was due to the benign prostatic hyperplasia increasing the risk of subjective memory impairment. Treatment of the lower urinary tract symptom was delayed because as the elderly got older, they increasingly recognized benign prostatic hyperplasia as a reasonable symptom. Timely intervention and early screening are necessary to prevent lower urinary tract symptom. Finally, programs to reduce the incidence of lower urinary tract symptom and educate nurses to assess, evaluate, perform intervention for subjective memory impairment should be developed.

• Journal of Digital Contents Society
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• v.18 no.2
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• pp.303-309
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• 2017

The purpose of this study is to determine the cause and result of the smartphone use in the classroom, focusing on students from Child Care departments in colleges. The targets of this study were 10 college students from child care departments and data was collected through in-depth interviews. The results of the study are as follows. [Cause of use] was divided into and . [Negative result] has been identified by and . [positive result] has been identified by < Learning Support >, < Memory Support >. The study is believed to contribute to identifying the problems of smartphone use of college students in the future and contributing to the provision of basic materials for the use of favorable purposes.

• ETRI Journal
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• v.11 no.2
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• pp.120-136
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• 1989

최근의 데이터 베이스 응용분야에 있어서 시간에 따른 정보의 변화를 유지관리할 필요성이 대두되고 대용량의 기억장치 가격의 급속한 감소와 함께 이의 이용 기술이 향상되면서 시간주기에 따라 실세계의 상태에 대한 변경과정을 표현하는 시간 즉, 데이터의 변경이력을 지원하는 데이터베이스(Terporal Database)에 관심이 집중되고 있으며, 이러한 요구를 만족시키기 위한 여러 방법들이 연구되고 있다. 일반적으로 시간 지원 데이터베이스 모델은 지원되는 시간의 형태에 따라 Static, Static Rollback, Historical, Temporal, Revision 데이터베이스 모델로 나뉘어진다. 본 논문에서는 시간 및 변경이력을 지원하기 위한 데이터베이스 모델과 이를 위한 데이터베이스 시스템의 주요 설계 Issue들에 관하여 조사분석한 다음, Static Rollback 데이터베이스 모델을 기본으로 하는 "$SR^2DBS$: 시간 지원 데이터베이스 시스팀"의 설계 및 구현에 관하여 기술하였다. $SR^2DBS$은 기존의 관계형 데이터 베이스 시스팀"의 모델을 시간 애트리뷰트를 추가시킴으로서 데이터 베이스의 변경이력관리를 가능케 한 Direct Manipulation Database Processing System으로 데이터베이스의 현상태 뿐만 아니라 시간에 따른 변경이력에 대해서 Screenoriented Relation Browsing & Editing 기능을 제공하며, 다음과 같은 특징을 갖는다. - Screen oriented Processing - Directi-Manipulation of Objects - Object & Revision History of Interest Visibility - Rapid Reversible Actions - Transaction Time & Revision Number Supporting - Roll-back Query Supporting - Han-gul Data Supporting - Two level Storage Structure(Current Version & History Versions)

• The Korean Journal of Applied Statistics
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• v.29 no.7
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• pp.1213-1229
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• 2016

Cho and Shin (2016) recently demonstrated that an integrated HAR model has a forecast advantage over the HAR model of Corsi (2009). Recalling that realized volatilities of financial assets have asymmetries, we add a leverage term to the integrated HAR model, yielding the LIHAR model. Out-of-sample forecast comparisons show superiority of the LIHAR model over the HAR and IHAR models. The comparison was made for all the 20 realized volatilities in the Oxford-Man Realized Library focusing specially on the DJIA, the S&P 500, the Russell 2000, and the KOSPI. Analysis of the realized volatility data sets reveal apparent long-memory and asymmetry. The LIHAR model takes advantage of the long-memory and asymmetry and produces better forecasts than the HAR, IHAR, LHAR models.

• The Korean Journal of Archival Studies
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• no.51
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• pp.45-87
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• 2017

In recent years, there were some who have conducted research on deriving the social and historical meanings of records through the analysis of specific records collections. This trend is an attempt to pay attention to human actions in the society and to read the society again through the records created by such actions. In this study, I derive various meanings and values of these records through the analysis of the "Laos Renewable Energy Support Activities" collection. Moreover, I study how the collection was reconstructed by the Human and Memory Archives. The "Laos Renewable Energy Support Activities" is the personal record of the donor who led the project, and contains the process and results of the project. Through this collection, I was able to look at the life of the donor as a foreign aid activist in Laos and realized his values. Furthermore, through the business process record, I was able to discover the implications of climate change response overseas aid projects. In addition, I was able to look at the culture and environment of Laos through the eyes of the donor who has been residing there for a long time.

• Korean Management Science Review
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• v.2
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• pp.26-38
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• 1985

전문가 체제 (Expert System: 이하 ES라 부름)란 회귀하고 값비싼 전문가의 지식과 경험을 체계화하여 콤퓨터에 기억시켜 둠으로써 전문가가 아닌 많은 사람들이 전문가를 만나지 않고서도 ES를 통하여 전문가의 능력을 빌릴 수 있도록 한 것이다. 전문가 체제는 오래전부터 콤퓨터 전문가들의 연구 분야였던 인공지능(Artificial Intelligence)을 그 모체로 하고 있으나 최근에는 경영정보체제(Management Information System)나 의사결정 지원체제 (Decision Support System)분야에 종사하는 분들의 ES에 대한 관심이 날로 증가하고 있다.(중략)

• Electronics and Telecommunications Trends
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• v.7 no.3
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• pp.108-120
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• 1992

어떤 특정분야에서 데이터베이스 관리에 관한 한 관계형시스팀이 앞으로의 대안이라는 것은 의심할 여지가 없으며, 이와 같은 관계형 원리에 근거한 DB2 관계형 데이터베이스 시스팀은 매우 Cost-Effective하며 다양한 방법으로 어플리케이션 개발을 지원할 뿐 아니라 아주 많은 이용자들에게 다양한 서비스를 제공하기 위해서 상대적으로 소수의 데이터 처리 전문가만을 요구한다. 본 고에서는 이러한 DB2 관계형 데이터베이스 시스팀을 이용하여 특정 어플리케이션을 개발하고자 할 경우에 있어서 필요한 간단하고 기본적인 DB2의 소개, 구성, 기억장소 산출방식 및 기술동향에 대해 아주 일부분적인 내용만을 언급하였다.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2008.10a
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• pp.13-16
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• 2008

주택문화관은 소비자와의 접점으로 주택상품을 전시하고 판매하는 실질적인 공간이다. 따라서 주택문화관은 다양한 디자인을 통한 경험을 제공하고, 소비로 이어질 수 있는 마케팅 요소로써의 공간이 되어야 한다. 특히 행동체험은 신체적 경험을 유도함으로써 기억과 추억을 남기는 핵심적 공간마케팅 전략이다. 본 연구에서는 현실적 체험요소와 호기심 자극 체험요소를 제안하여 소비자들에게 은유적이고 장기적인 인식을 지원하며, 이것이 공간 마케팅 관점에서 반복적이고 지속적으로 접근 가능한 소비환경이 되는 전략을 제시한다.