• Journal of Korean Society for Geospatial Information Science
• /
• v.6 no.1 s.11
• /
• pp.11-17
• /
• 1998

Recently, 3D GIS based on 3D geo-processing methodology and Internet environment are emerging issues in GIS fields. To design and implement 3D GIS, the strategic linkage of Java and VRML is first regarded: 3D feature format definition in the passion of conventional GIS including aspatial attributes, 3B feature indexing, 3D analytical operators such as selection, buffering, and Near, Metric operation such as distance measurement and statistical description, and 3D visualization. In 3D feature format definition, the following aspects are implemented: spatial information for 3D primitives extended from 2D primitives, multimedia data, object texture or color of VRML specification. DXF-format GIS layers with additional attributes are converted to 3D feature format and imported into this system. While, 3D analytical operators are realized in the form of 3D buffering with respect to user-defined point, line, polygon, and 3D objects, and 3D Near functions; furthermore, 'Lantern operator' is newly introduced in this 3D GIS. Because this system is implemented by Java applet, any client with Java-enable browser including VRML browser plug-in can utilize the new style of 3D GIS function in the virtual space. Conclusively, we present prototype of WWW-based 3D GIS, and this approach will be contribute to development of core modules on the stage of concept establishment and of real application model in future.

• Science of Emotion and Sensibility
• /
• v.5 no.4
• /
• pp.77-84
• /
• 2002

In this paper, we propose the NAVER, a general framework for multipurpose virtual environments, and introduce the case study of evaluating car prototypes using cave-like systems. As a framework to implement variant applications in virtual environment, NAVER is extensible, reconfigurable and scalable. NAVER consists of several external modules (Render Server, Control Server and Device Server), which communicate each other to share states and user-provided data and to perform their own functions. NAVER supports its own scripting language based on XML which allows a user to define variant interactions between objects in virtual environments as well as describe the scenario of an application. We used NAVER to implement the system for evaluating car prototyes in a CAVE-like virtual environment system. The CAVE-like virtual environment system at KIST consists three side screens and a floor screen (each of them is a square with side of 2.2m), four CRT projectors displays stereoscopic images to the screens, a haptic armmaster, and a 5.1 channel sound system. The system can provide a sense of reality by displaying auditory and tactile senses as well as visual images at the same time. We evaluate car prototypes in a CAVE-like system in which a user can observe, touch and manipulate the virtual installation of car interior.

• Journal of KIISE:Computing Practices and Letters
• /
• v.7 no.2
• /
• pp.165-182
• /
• 2001

In this paper, we describe a design and implementation of the Wireless Markup Language(WML) compiler to deploy wireless Internet services effectively. The WML compiler translates textual WML decks into binary ones in order to reduce the traffic on wireless links that have relatively low bandwidth to wireline links and mitigate the processing overhead of WML decks on, wireless terminals that have relatively low processing power to fixed workstations. In addition, it takes over the overhead of eXtensible Markup Language(XML) well-formedness and validation processes. The WML compiler consists of the lexical analyzer and parser modules. The granunar for the WML parser module is LALR(1) context-free grammar that is designed based on XML 1.0 and WML 1.2 DTD(Document Type Definition) with the consideration of the Wireless Application Protocol Binary XML grammar. The grammar description is converted into a C program to parse that grammar by using parser generator. Even though the tags in WML will be extended or WML DTD will be upgraded, this approach has the advantage of flexibility because the program is generated by modifying just the changed parts. We have verified the functionality of the WML compiler by using a WML decompiler in the public domain and by using the Nokia WAP Toolkit as a WAP client. To measurethe compressibility gain of the WML compiler, we have tested a large number of textual WML decks and obtained a maximum 85 %. As the effect of compression is reduced when the portion of general textual strings increases relative to one of the tags and attributes in a WML deck, an extended encoding method might be needed for specific applications such as compiling of the WML decks to which the Hyper Text Markup Language document is translated dynamically.

• 한국지구과학회:학술대회논문집
• /
• 2010.04a
• /
• pp.68-69
• /
• 2010

본 연구의 목적은 서울시 소재 과학영재교육원에서 운영하는 프로그램에서 개발된 일부 모듈들에 구현되어있는 과학탐구과정 및 사고과정의 특징이 과학영재프로그램의 목적에 따른 목표를 성취할 수 있는지를 평가하고, 과학탐구과정이나 사고과정의 각 항목을 구현한 탐구의 실제를 알기 위한 것이다. 또, 본 연구의 결과를 토대로 모듈들에 대해 반성하고 개선점을 찾으려는 것이다. 연구 참여자들은 13명이며 연구 목적을 위해 첫째, 영재교육과정 및 평가에 관한 문헌을 근거로 과학영재프로그램의 목적과 목표를 설정, 둘째, 목적과 목표를 근거로 문헌에 제시된 분석틀들을 수정 개발, 셋째, 참여자들이 각자 모듈을 1개 선정하여 분석하고 이를 수정한 후 다시 분석하여 해석, 넷째, 분석결과의 해석을 토대로 반성을 하였다. 각 단계마다 각자 해결한 내용을 공개하고 모든 참여자들이 공개된 내용에 대해 비판하면서 합의하는 과정을 거쳤다. 합의 도출에 의해 첫째, 과학영재프로그램의 목적은 '탐구적 사고과정을 함양하고 지역사회에 유익한 새로운 지식을 창출한다.', 이에 대한 목표는 '자기 주도적인 탐구 계획 능력을 향상한다.'와 '숙달된 탐구 기능을 사용하여 실제문제를 해결할 수 있다.'로 설정하였다. 둘째, 분석틀은 '과학탐구과정' 과 '사고과정'의 두 범주로 구성하였으며, '과학탐구과정'에 해당하는 항목은 '사전탐구, 탐구방법, 해석적 탐구기술, 의사소통능력, 탐구평가, 과학의 본성'으로, '사고과정'에 해당하는 항목들은 '논리적 사고, 창의적 사고'로 구성하였다. 셋째, 선정된 모듈들을 분석한 결과 모듈들은 대체로 탐구방법과 해석적 탐구기술을 많이 강조하였는데, 수정된 모듈들에서는 이 두 항목이 더욱 강조되었다. 특히, 해석적 탐구기술에서 의사소통능력, 탐구평가, 과학의 본성, 창의적 사고를 강조하는 탐구의 실제가 증가하였다. 수정후 증가된 항목들은 앞에서 설정한 두 가지 목표에 도달하는데 도움이 되는 항목들이라고 합의 선정되었던 것이므로, 이에 따라 수정 전 모듈보다 수정 후 모듈이 보다 더 영재프로그램의 목표에 도달하기에 적합한 것으로 판단하였다. 넷째, 연구결과를 토대로 반성한 점은 '목표' 에 '창의적 사고'와 '과학의 본성'에 대한 강조가 부족하다는 것, '목표'에서 '실제문제를 해결'할 수 있어야 한다는 것에 비해 '모듈'에서 다루는 주제는 '실제문제'가 아니라 학문적인 질문에 치우쳐 있다는 것, '자기 주도적인 탐구 계획 능력'을 향상시키는 탐구의 실제가 대체로 적게 제시되어 있다는 것이다. 이러한 반성을 영재프로그램의 각 모듈에서 모두 구현할 수 있는 것은 아니지만 본 연구에서 설정한 목적과 목표에 따라 프로그램을 개발하는 경우 이러한 반성점을 고려하여 모듈을 개발한다면 영재프로그램 전체적으로 볼 때는 모두 구현되어 있을 것이다. 본 연구는 서울시에 소재하는 과학영재교육원들에서 개발하여 사용하는 많은 모듈 중 극히 일부를 대상으로 하였으므로 연구 결과를 모든 과학영재프로그램에 적용하기에는 한계가 있다. 그러나 본 연구처럼 프로그램이나 모듈을 평가하려는 연구자들에게 일련의 평가단계에 대한 시사점을 제공할 수 있을 것으로 생각한다.

• Journal of the Institute of Electronics Engineers of Korea CI
• /
• v.45 no.5
• /
• pp.95-101
• /
• 2008

Modeling of stock prices forecast has been considered as one of the most difficult problem to develop accurately since stock prices are highly correlated with various environmental conditions including economics and political situation. In this paper, we propose a agent system approach to predict Korea Composite Stock Price Index (KOSPI) using neural network and statistical methods. To minimize mean of prediction error and variation of prediction error, agent system includes sub-agent modules for feature extraction, variables selection, forecast engine selection, and forecasting results analysis. As a first step to develop agent system for KOSPI forecasting, twelve economic indices are selected from twenty two basic standard economic indices using principal component analysis. From selected twelve economic indices, prediction model input variables are chosen again using best-subsets regression method. Two different types data are tested for KOSPI forecasting and the Prediction results showed 11.92 points of root mean squared error for consecutive thirty days of prediction. Also, it is shown that proposed agent system approach for KOSPI forecast is effective since required types and numbers of prediction variables are time-varying, so adaptable selection of modeling inputs and prediction engine are essential for reliable and accurate forecast model.

• Journal of Korean Clinical Nursing Research
• /
• v.24 no.2
• /
• pp.209-226
• /
• 2018

Purpose: This purpose of this study was to develop evidence-based practice guideline for isolation in health care settings to prevent transmission of infectious diseases utilizing guideline adaption process. Methods: The process of guideline adaptation was performed according to the Korean hospital nurses association's guideline adaptation manual which consisted of three main phases, 9 modules, and 24 steps. Results: The adapted isolation guideline consisted of introduction, overview of isolation guideline, summary of recommendations, recommendations, references, and appendices. The guideline includes 224 recommendations in 4 sections which are organizational administration, standard precautions, transmission-based precautions, and education/counselling. Conclusion: The adapted isolation guideline is recommended to be disseminated and utilized by nurses and clinicians nationwide to improve the isolation practices for infected or colonized patients with communicable diseases and to decrease the transmission of infections in the healthcare settings.

• Journal of Korean Home Economics Education Association
• /
• v.33 no.2
• /
• pp.57-80
• /
• 2021

The purpose of this research is to develop a Home Economics education curriculum that can promote citizenship through critical literacy. To this end, the 'housing' area in the 2015 revised curriculum of home economics and textbooks were analyzed from a critical literacy perspective. Using Laster(1986)'s critical science curriculum development course and "A Teacher's guideFamily, Food and Society"(Staaland & Storm, 1996), a 'Citizenship raising curriculum of home economics education in the housing area.' was developed. The results of this research are as follows. First, when the the curriculum was examined, the teaching objectives of the overall subject, or the achievement criteria, learning elements, and evluative methods of the housing area consisted of practical problem solving curriculum that can include critical literacy content. In addition, as a result of analyzing the text of the three textbooks' housing areas, it was found that most of them were described as adapting to and coping with the current culture, and few problems or social issues were mentioned that could lead to critical literacy. Second, the housing area curriculum for critical literacy learning was developed, with a total of 13 plan of 7 modules including continuous interests, valued ends, learning contents, and 26 learning materials including reading materials, and video materials. Based on the findings, the next curriculum and textbook should address social issues related to critical literacy and various classes of housing, and teachers' communities and training should be operated to support teachers who can be examplary for practical reasoning and critical thinking.

• Journal of Korean society of Dental Hygiene
• /
• v.19 no.5
• /
• pp.651-664
• /
• 2019

Objectives: This study surveyed the application of Comprehensive Dental Hygiene Care (CDHC), based on non-surgical periodontal therapy within the educational curricula of Korean universities and examined whether they recognized the need for CDHC. Methods: This study analyzed data from professors of dental hygiene practicum related subjects in 75 Korean universities. The collected data were analyzed using a Chi-square test, a Mann-Whitney U-test, and a Kruskal Wallis test via SPSS (Ver. 21.0). Results: First, the application scope of CDHC was higher in four-year universities than three-year ones with the scope of several characteristics increasing along with enrollment quota. The application scope of dental hygiene plans and actions increased with the number of patient practices in terms of periodontal evaluations. Second, the needs of the dental hygiene courses were more than 4 points in all characteristics. Although four-year universities exhibited higher points than three-year ones, there was no significant difference found except other test. Finally, all universities based their dental hygiene courses on case histories, oral and maxillofacial information, hard tissue modules, periodontal issues, and other tests, with needs also being high. Meanwhile, the application scope of the dental hygiene course evaluations was lowest in all characteristics. Conclusions: There were no significant differences in dental hygiene curricula among the universities. However, highly qualified and standardized educational courses and lectures should be developed by the Korean evaluation center for dental hygiene curricula using various studies as the basis of theory and practical classes, the total number of terms, number of case studies used, number of students per class, ratio of students to professor, and so on.

• Journal of Internet Computing and Services
• /
• v.22 no.6
• /
• pp.129-140
• /
• 2021

The next generation mBcN should be built to cooperate with the wireless network to support hyper-speed and hyper-connectivity. In this paper, we propose a network architecture for the cooperation mBcN and 5G commercial network and architecture of the cooperative security gateway required for the cooperation. The proposed cooperative security gateway is between gNB and UPF to support LBO, SFC, and security. Our analysis shows that the proposed architecture has several advantages. First of all, user equipment connected with the mBcN can be easily connected through the 5G commercial radio network to the mBcN. Second, the military application traffic can be transmitted to mBcN without going through the 5G core network, reducing the end-to-end transmission delay without causing the traffic load on the 5G core network. In addition, the security level of the military application can effectively be maintained because the user equipment can be connected to the cooperative security gateway, and the traffic generated by the user equipment is transmitted to the mBcN without going through the 5G core network. Finally, we demonstrate that LBO, SFC, and security modules are essential functions of the proposed gateway in the 5G test-bed environment.

• Science of Emotion and Sensibility
• /
• v.26 no.2
• /
• pp.53-66
• /
• 2023

In recent times, more fashion brands have been seeking ways to use metaverse platforms, in which users can actively participate, as their new brand touch-points. This study aims to compare the brand experiences of the fashion brand Gentle Monster's offline store and its equivalent metaverse store. By changing the order of offline and metaverse visits, two groups participated in the field study that allowed them to experience directly the offline and metaverse stores. As a result of the analysis, the following findings were discovered: (1) In the overall experiential response, the frequency of sensory modules responding to new information was much higher than that of feeling experiences; (2) Experiential responses were more active in the offline store where the subjects could touch and use products directly rather than in the metaverse; (3) Among the four types of theme space, the experiential response was the most frequent in the product space; (4) The first group that visited the metaverse store before the offline store showed a more active experience than the second group that visited the offline store first. Finally, the results of this study show that metaverse brand stores in virtual space not only provide differentiated experiences beyond the spatiotemporal constraints of real space but can also be used as a strategic tool to make offline store experiences more meaningful and rich.