• Journal of Information Science Theory and Practice
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• v.12 no.2
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• pp.79-95
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• 2024

The new AI based conversational chatbot, ChatGPT, launched in November 2022, is causing a stir. There are many opinions about this being a 'threat or a promise,' and thus it is important to understand what has been said about this tool and, based on the growing literature that has emerged on the subject, demystify its effective impact on society. To analyse this impact, a systematic literature review with the support of the preferred reporting items for systematic reviews and meta-analysis protocol was used. The data, scientific documents, were collected using the main scientific databases - SCOPUS and Web of Science - and the results were presented based on a bibliometric and thematic exploration of content. The main findings indicate that people are increasingly using this chatbot in more diverse areas. Therefore, this study contributes at the practical level, aiming to enlighten people in general - both in professional and personal life - about this tool and its impacts. Also, it contributes at the theoretical level, which involves expanding understanding and elucidation of the impacts of ChatGPT in different areas of study.

• Journal of Engineering Education Research
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• v.3 no.2
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• pp.14-23
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• 2000

This paper is concerned with the development of remote engineering laboratory using the internet. Recently, various virtual laboratories are introduced using the multimedia technologies but the internet laboratory using the real hardware system is not present. In this study, we developed the remote engineering laboratory by combining the GPIB program which controls the hardwares with the web programming which controls the internet. The function generator, LCR meter, and oscilloscope were considered as the measurement devices. The client program includes the user-interface which carry out experiment remotely. Several electrical experiments were set up to verify the experimental process. It has been found that the remote engineering experiments are feasible and valid. The methodologies will be discussed in detail.

• Proceedings of the KAIS Fall Conference
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• 2010.11a
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• pp.325-328
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• 2010

최근의 인터넷환경은 다양한 형태의 가상 및 원격 교육이 가능한 기반을 제공하고 있으며, 대학 및 교육기관에서는 이를 활용한 새로운 교육용 도구의 개발이 활발히 이루어지고 있다. 본 논문은 시공간의 제약 없이 실험을 수행할 수 있도록 하여 학습자들에게 반복 학습이 가능하도록 하였고, 유량제어를 실현 할 수 있는 비선형 시스템의 이중탱크 기구를 이용하여 다양한 제어이론을 실험할 수 있는 웹기반 실험실을 구현하였다. 전체 시스템은 SISO 시스템과 MIMO 시스템을 학습자가 선택하여 실험할 수 있도록 하였다. 유량제어 방식은 수동, PID, FUZZY 제어로 실험할 수 있도록 하여 학습자들에게 여러 가지 제어이론을 다양하게 학습할 수 있도록 구성하였으며, 릴레이 자기 동조법을 구현하여 학습자들로 하여금 PID변수를 확인할수 있도록 하였다. 또한 Web-Cam을 통하여 실험화면을 실시간으로 확인하면서 시뮬레이션을 동시에 실행하여 비교할 수 있도록 구현하였다.

• Steel and Composite Structures
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• v.36 no.3
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• pp.307-319
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• 2020

The upper chords in half-through truss bridges are prone to buckling due to a lack of the upper transverse connections. Taking into account geometric and material nonlinearity, nonlinear finite-element analysis of a simple supported truss bridge was carried out to exhibit effects of different types of initial imperfections. A half-wave of initial imperfection was proved to be effective in the nonlinear buckling analysis. And a parameter analysis of initial imperfections was also conducted to reveal that the upper chords have the greatest impact on the buckling, followed by the bottom chords, vertical and diagonal web members. Yet initial imperfections of transverse beams have almost no effect on the buckling. Moreover, using influence surface method, the combinatorial effects of initial imperfections were compared to demonstrate that initial imperfections of the upper chords play a leading role. Furthermore, the equivalent effective length coefficients of the upper chord were derived to be 0.2~0.28 by different methods, which implies vertical and diagonal web members still provide effective constraints for the upper chord despite a lack of the upper transverse connections between the two upper chords. Therefore, the geometrical and material nonlinear finite-element method is effective in the buckling analysis due to its higher precision. Based on nonlinear analysis and installation deviations of members, initial imperfection of l/500 is recommended in the nonlinear analysis of half-through truss bridges without initial imperfection investigation.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.71-74
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• 2007

오늘날 생물학 데이터베이스 시스템은 끊임없이 증가하고 복잡하게 연결되는 데이터를 처리해야 할 필요성과 데이터양의 증가만큼이나 빨리 성장하는 사용자들의 요구에 부응해야 하는 필요성에 직면해 있다. 이 논문에서는 기존의 생물학 데이터베이스 시스템의 특징을 살펴본 후, 현재 당뇨 관련 데이터베이스가 존재하지 않으므로 당뇨 연구를 위한 포괄적인 정보 제공과 사용의 편의를 제공하기 위하여 생물학 관련 데이터베이스를 교차 참조한 당뇨 연구용 데이터베이스를 설계하였다. 본 논문에서 설계한 데이터베이스는 Genetic Information, Protein Information, In Silico digestion, 그리고 Chemical Information 4개의 메뉴로 구성하였다. Genetic Information과 Protein Information은 Cross-Reference를 통한 관련 데이터베이스와 연결시켰고, Protein Information에서 PDB 코드가 존재할 경우 3차원 분자 구조를 제공한다. 아울러 단백질 동정시에 활용할 수 있는 선택된 효소처리 후의 펩타이드의 이론적 질량값을 계산하도록 구현(In Silico Digestion)하였으며, 당뇨 관련 주요 단백질의 화합물들의 구조를 제공하였다.

• IEIE Transactions on Smart Processing and Computing
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• v.3 no.3
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• pp.128-134
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• 2014

A real-time, continuous-scale image interpolation method is proposed based on a bilinear interpolation with directionally adaptive low-pass filtering. The proposed algorithm was optimized for hardware implementation. The ordinary bi-linear interpolation method has blocking artifacts. The proposed algorithm solves this problem using directionally adaptive low-pass filtering. The algorithm can also solve the severe blurring problem by selectively choosing low-pass filter coefficients. Therefore, the proposed interpolation algorithm can realize a high-quality image scaler for a range of imaging systems, such as digital cameras, CCTV and digital flat panel displays.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05c
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• pp.1559-1562
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• 2003

현대의 산업화가 급격히 발전되면서 유한한 에너지에 대한 고갈 및 환경 문제가 더욱 심각해지고 있다. 이와 같은 문제들을 해결하기 위한 하나의 방법으로서 대체에너지 관리 및 서비스의 필요성이 크게 요구되고 있다. 이 논문은 국내 지역에서 측정된 대체에너지 데이터에 대한 실시간 시공간 대체에너지 관리기를 설계한다. 시공간 대체에너지 관리기는 시공간 질의 처리기, 실시간 데이터 처리기, 공간 객체 관리기, 웹 GIS 서버로 구성된다. 또한 주기적으로 측정되는 대체에너지 관련 데이터를 실시간으로 처리하여 시공간 데이터베이스를 구축하고, 웹에서 다양한 형태로 정보를 제공하는 기능을 포함한다. 시공간 질의 처리기에서 실행된 결과를 텍스트 형태로만 제시하지 않고, 그래프, 등고선, 지도정보 등과 같은 다양한 시각화를 통한 검색 서비스를 제공한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.05a
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• pp.399-402
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• 2008

철로를 통해 수출입 화물을 운송하는 철도 물류 비즈니스에서의 정보교환은 사용자와 한국철도공사간에 전자문서(EDI, XML)를 사용하여 처리하거나 WEB을 통해 데이터를 입력함으로써 처리하고 있다. 전자적으로 데이터를 교환하여 처리하는 업무 비중은 철도 물류뿐만 아니라 물류 전반에 걸쳐 점차 높아지고 있는 추세이다. 철도 물류 또한 점차 증대되는 업무 자동화에 대한 사용자 요구를 지원하기 위하여 전자적인 데이터 교환의 필요성이 커지고 있다. 본 논문에서는 철도물류 업무에 있어서 전자적인 데이터 교환을 지원하기 위하여 현 철도 물류 정보화에 대해 분석하고 이에 대한 개선 방안을 도출하고자 한다. 또한 표준화된 비즈니스 프로세스 모델링 방법에 따른 정보 표준화 방안에 대해서도 논의하고자 한다.

• The Journal of Society for e-Business Studies
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• v.10 no.4
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• pp.53-81
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• 2005

Current DRM system has limitation in protection of user's privacy Therefore, many troubles are expected in service providing if it comes into the ubiquitous times of context-aware environment. HKUST Proposed a watermark-based web service DRM system. However, the relevant study does not consider ubiquitous environment and cannot provide service that considered a context. And privacy protection of a user is impossible. On the other hand, Netherlands Phillips laboratory indicated a privacy problem of a DRM system and they proposed an alternative method about this. However, in relevant study, a Sniffing/Replay attack is possible if communicated authentication information are exposed between a user and device. We designed web services adaptable privacy-aware DRM architecture which supplements these disadvantages. Our architecture can secure user authentication mechanism for sniffing/Replay attack and keep anonymity and protect privacy Therefore , we can implement the privacy-aware considered web service DRM system in Context-Aware environment.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2717-2719
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• 2003

In this paper, we developed an efficient virtual experiment kit with creative and interactive multimedia contents, which can be used to enhance the quality of education in the area of digital logic circuits. Since our virtual experiment kit is implemented to describe the on-campus laboratory, the learners can obtain similar experimental data through it. Also, our web-based virtual experiment kit is designed to enhance the efficiency of both the learners and the educators. The learners will be able to achieve high learning standard and the educators save time and labor. The virtual experiment is performed according to the following procedure: (1) Circuit Composition on the Bread Board (2) Applying Input Voltage (3) Output Measurements (4) Checkout of Experiment Results. Furthermore, the circuit composition on the bread board and its corresponding online schematic diagram are displayed together on the virtual experiment kit for the learner's convenience. Finally, we have obtained several affirmative effects such as reducing the total experimental hours and the damage rate for experimental equipments and increasing learning efficiencies as well as faculty productivity.