• The Journal of the Korea Contents Association
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• v.19 no.8
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• pp.93-105
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• 2019

This study want to identify problems related to mobile in-app payment from the perspective of consumers and suggest ways to solve them. Three scenarios have been developed to achieve the objectives of this study. This suggests the situation of in-app payment problem that consumers often experience. Then 323 consumers in their 20s and 30s read the scenario, identified the problem in each situation and assessed who was responsible. Consumers were aware of in-app payment problems due to problems with in-app payment readability, problems with app market responsibility, problems with responsibility of game companies, and problems of consumer responsibility. And different consumers had different levels of assessment on the problem of in-app payment. According to the research, consumers have high demand for improvement of the lack of readability in related laws, including strengthening the readability of the in-app payment indicator. In addition, the company confirmed the importance of cooperative efforts by consumers, businesses, and the government due to high consumer expectations for the role of the distribution company App Market other than the content developer game company.

• Journal of Internet Computing and Services
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• v.20 no.5
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• pp.87-94
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• 2019

In this paper, the method of analyzing the unformatted data of consumers accumulated on social networks in the era of the Fourth Industrial Revolution by utilizing data from the service design and social psychology aspects was proposed. First, the fandom phenomenon, which shows subjective and collective behavior in a space on a social network rather than physical space, was defined from a data service perspective. The fandom model has been transformed into a collective level of customer Persona that has been analyzed at a personal level in traditional service design, and social network analysis that analyzes consumers' big data has been presented as an efficient way to pattern and visually analyze it. Consumer data collected through social leasing were pre-processed by column based on correlation, stability, missing, and ID-ness. Based on the above data, the company's brand strategy was divided into active and passive interventions and the effect of this strategic attitude on the growth direction of the consumer's fandom community was analyzed. To this end, the fandom model of consumers was proposed by dividing it into four strategies that the brand strategy had: stand-alone, decentralized, integrated and centralized, and the fandom shape of consumers was proposed as a growth model analysis technique that analyzes changes over time.

• Journal of Convergence for Information Technology
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• v.10 no.12
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• pp.126-131
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• 2020

This study analyzed the inflow and outflow patterns of emergency department patients, to identify changes in regional types in cities, counties, and districts in Jeonlado, Korea. Data of areas in Jeonlado for 2014 to 2018 were extracted from the National Emergency Department Information System. The extracted data includes the patients' and emergency medical institution addresses, which were used to calculate the relevance index (RI) and commitment index (CI). The calculated indices were classified into regional types by applying cluster analysis. A non-parametric method, Kruskal-Wallis test, was employed to examine the differences between years for RI and CI by regional types. The results of cluster analysis using the relevance and commitment indices revealed three regional types. Regions in cluster 1 were classified as outflow type, in cluster 2 as inflow type, and in cluster 3 as self-sufficient. RI and CI were calculated for each cluster or regional type. There were no significant differences between years in cluster 2 (inflow type) and cluster 3 (self-sufficient type). In cluster 1 (outflow type), there were no significant differences in CI between the years; however, there were significant differences in RI between 2014 and 2017, and 2014 and 2018. It is difficult to see that the emergency medical environment has improved due to the increased concentration of emergency medical care.

• Journal of Convergence for Information Technology
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• v.11 no.3
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• pp.140-146
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• 2021

As the environment using intelligent IoT devices increases, various studies are underway to ensure the integrity of information sent and received from intelligent IoT devices. However, all IoT information generated in heterogeneous environments is not fully provided with reliable protocols and services. In this paper, we propose an intelligent-based multi-blockchain model that can extract only critical information among various information processed by intelligent IoT devices. In the proposed model, blockchain is used to ensure the integrity of IoT information sent and received from IoT devices. The proposed model uses the correlation index of the collected information to trust a large number of IoT information to extract only the information with a high correlation index and bind it with blockchain. This is because the collected information can be extended to the n-tier structure as well as guaranteed reliability. Furthermore, since the proposed model can give weight information to the collection information based on blockchain, similar information can be selected (or bound) according to priority. The proposed model is able to extend the collection information to the n-layer structure while maintaining the data processing cost processed in real time regardless of the number of IoT devices.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.17 no.5
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• pp.187-203
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• 2022

As the economic, social, and environmental problems of the local community reach a serious level, our society is realizing the need to foster young talents who discover opportunities in local issues through entrepreneurship education and create social values through creative challenges. However, entrepreneurship education programs are generally focused on commerciality, so customized education programs to solve regional problems are insufficient. Therefore, this study aimed to develop a community problem-solving entrepreneurship curriculum. In this study, a competency based curriculum model was applied to develop the curriculum, and regional problem-solving entrepreneurship competencies were derived through expert advice from a total of 10 people. In the process, the Delphi methodology was additionally used to reduce the possibility of errors in the competency model. As a result of the study, a total of 23 regional problem-solving entrepreneurship competencies were confirmed, and knowledge(K) - skill(S) - attitude(A) by competency consisted of 5, 9, and 9, respectively. By applying this to Dunham's problem-solving six-step model, modular learning support measures were developed in the order of phase 1(problem discovery), phase 2(problem analysis), phase 3(plan), phase 4(measure), and phase 5(evaluation). This study is meaningful in that it integrated theory and practice by developing specific entrepreneurship curriculum and learning support measures based on the theoretical model devised in social welfare. In addition, it has implications in that it developed a regional problem-solving entrepreneurship competency model based on expert advice and proposed a specific curriculum based on this.

• Journal of Korea Foundry Society
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• v.17 no.6
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• pp.552-559
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• 1997

주조방안설계를 위한 pre-processor, main-solver 그리고 post-processor로 구성된 통합 응고해석 시스템을 개발하였다. Pre-processor는 퍼스널 컴퓨터에서 사용되는 상용 CAD 프로그램인 AutoCAD를 사용하였다. Main-solver는 주조과정중의 충진거동을 해석한 유동해석 프로그램과 3차원 열전달 응고해석을 통합하여 냉각수 시스템으로 제어되는 금형 반복주조법에서의 응고양상을 해석할 수 있다. Post-processor는 cavity내의 용탕충진거동, 주형내의 온도분포, 응고시간등을 3차원 그래픽으로 처리할 수 있게 설계하였다. 개발된 시스템의 현장적용 가능성을 검증하기 위하여 대형주강 밀하우징, 자동차휠 주조용품, 밸브블럭등의 시제품의 열유동해석에 적용하였다. 본 연구에서 개발된 CastDesigner는 중소기업형 주조현장에서 PC용 CAD/CAE system 구축을 통한 최적주조방안 설계용 열유동해석 프로그램으로 사료된다.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11a
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• pp.232-234
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• 2005

대규모의 네트워크를 사용하는 기업이나 학교, 기관에서는 IP주소의 효율적인 관리를 위해 설러 가지 노력을 하지만 사용자의 허가되지 않은 IP주소의 무단 사용에 대하여 대처할 방법이 마땅치 않다. 사용자 임의로 IP주소를 설정하여 사용하게 되면 이를 찾아내기가 매우 까다롭고, 안약 그 IP주소가 중요서버의 IP일 경우에는 IP주소의 중복사용으로 인한 서비스 장애가 발생할 수도 있다. 본 연구에서는 현재 네트워크 설정을 변경하지 않으면서 사용자의 특별한 개입 없이 IP주소를 관리 및 모니터링 하고 중요 서버의 IP사용을 보호할 수 있는 에이전트 기반의 시스템을 개발하고자 한다.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10a
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• pp.680-682
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• 1998

오늘날 많은 기업들이 공장 자동화를 위하여 많은 투자를 하고 있는 만큼 ATM/B-ISDN 통신망을 기반으로 한 생산 공정을 자동화함으로써 생산성 향상, 품질향상 및 원가절감을 꽤할 수 있어 오늘날 국제 경쟁 상회에서 유리한 위치를 점유할 수 있다. 본 논문에서는 원격지에 연결괸 공장 자동화 시스템을 중앙통제실에서 제어하는 시스템으로 분산형 데이터베이스를 구축하여 공장 자동화라인의 데이터를 저장, 유지 관리한다. 또한 각 생산 공정 라인의 텍스트, 그래픽, 이미지, 오디오, 비디오 등과 같은 대용량의 멀티미디어 데이터베이스 시스템을 구성하기 위해서는 원격제어을 위한 초고속 통신망이 필요하고,ATM/B-ISDN 통신망을 기반으로 한 멀티미디어 원격제어 구현을 위한 DBMS(Database Management)의 원격제어 Agent 시스템을 구현한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.1
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• pp.83-89
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• 2003

Network management has become very important issue due to the broad usage of network. However most of network management software are based on UNIX and very complicated to use. Therefore a simple and compact Network Management System which can be used easily on PC environment is needed. In this paper we address the design and implementation of windows-based network management system which can be easily used.

• Information and Communications Magazine
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• v.30 no.9
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• pp.65-71
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• 2013

스마트폰이 본격적으로 도입 활용되면서 서비스가 특정 플랫폼이나 환경에 제한 되지 않도록 하는 서비스 접근성을 만족하는 것이 스마트 서비스 제공의 중요한 목표가 되었다. 또한, 개발자들이 복잡한 앱 기술 보다 HTML5등 기존 웹 개발 기술을 활용하고 네이트브 앱에서 제공하던 단말 기능을 웹 기술로 사용 가능하도록 제공하는 기술이 많은 관심을 받고 있다. 전자정부 모바일 표준프레임워크는 이러한 요구사항을 만족하기 위하여 AJAX 프레임워크와 하이브리드 앱 기반의 실행환경을 도입하였다. 또한, 개발자 편의성을 위한 개발환경, 재사용성 증대를 위한 공통컴포넌트, 가이드 프로그램을 제공한다. 모바일 전자정부 표준프레임워크는 여러 공공서비스에 활용 되어 왔으며, 공공정보화 분야와 민간 기업 환경에서 핵심적인 기반 플랫폼 역할을 수행하고 있다. 본 논문에서는 모바일 표준프레임워크에서 활용된 기반 기술, 적용 아키텍처 및 주요기능, 활용사례에 대해서 소개하고자 한다.