• 한국IT서비스학회지
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• 제13권4호
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• pp.325-340
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• 2014

Mobile payment system using NFC attracted attention as the mobile payment market grows due to the fast diffusion of smart phones. However, non NFC mobile payment recently appeared because of the slow growth of infrastructure for NFC. With advent of Non NFC mobile payment applications, mobile payment industry is in developing trend. Non NFC mobile payment revitalizes the market by overcoming the limit of NFC with the smart applications using bar code and QR code payment, and providing various discounts, membership benefits and payment information. Therefore, this paper analyzed the intention of continuous use with the quality of mobile payment application based on the information system success model. Three categories of factors which are system quality, service quality, and information quality were used. We verified the significance of the factors affecting the intension of continuous use. mainly, quality of information was considered as an important factor of continuous Intention to Use. Also, unlike previous NFC, it was found that in Non-NFC, compatibility might not be as important factor. Moreover, we suggest a marketing strategy of companies for mobile payment industry which focus on information quality. and future research directions for non NFC payment market.

• Asia pacific journal of information systems
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• 제30권2호
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• pp.397-419
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• 2020

Business analytics is a management tool for achieving significant business performance improvements. Many organizations fail to or only partially achieve their business objectives and goals from business analytics. Business analytics adoption is a multi-stage complex activity consisting of evaluation, adoption, and assimilation stages. Several research papers have been published in the field of business analytics, but the research on multi-stage BA adoption is fewer in number. This study contributes to the scant literature on the multi-stage adoption model by identifying the critical themes for evaluation, adoption, and assimilation stages of business analytics. This study uses the thematic content analysis of peer-reviewed published academic papers as a research technique to explore the key themes of business analytics adoption. This study links the critical themes with the popular theoretical foundations: Resource-Based View (RBV), Dynamic Capabilities, Diffusion of Innovations, and Technology-Organizational-Environmental (TOE) framework. The study identifies twelve major factors categorized into three key themes: organizational characteristics, innovation characteristics, and environmental characteristics. The main organizational factors are top management support, organization data environment, centralized analytics structure, perceived cost, employee skills, and data-based decision making culture. The major innovation characteristics are perceived benefits, complexity, and compatibility, and information technology assets. The environmental factors influencing BA adoption stages are competition and industry pressure. A conceptual framework for the multi-stage BA adoption model is proposed in this study. The findings of this study can assist the practicing managers in developing a stage-wise operational strategy for business analytics adoption. Future research can also attempt to validate the conceptual model proposed in this study.

• 한국컴퓨터정보학회논문지
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• 제29권6호
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• pp.23-29
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• 2024

본 논문에서는 옷감과 입자 기반 유체 해법인 SPH(Smoothed particle hydrodynamics)를 이용한 액체 간의 상호작용으로 표현되는 다공성 흐름(Pore flow), 흡수, 방출 그리고 확산 효과를 GPU 기반으로 빠르게 표현할 수 있는 방법을 제안한다: 1) 옷감-액체의 상호작용에 의해 표현되는 다양한 물리적 효과를 GPU 기반으로 표현할 수 있는 통합형 프레임워크, 2) SPH 기반으로 노드의 포화도를 효율적으로 계산하고 이를 주변 Porous 입자들로 전달하는 방법, 3) 유체 흡수 및 방출 방향을 안정적으로 계산하기 위해 다르시 법칙(Darcy's law)을 기반으로 안정성을 개선시키는 방법, 4) Porous 입자들로 흡수되는 과정에서 유체의 흐름 방향에 따라 흡수되는 양을 조절하는 방법, 마지막으로 5) SPH 입자의 최대 질량이 넘지 않도록 방출할 수 있는 방법을 제시한다. 제안하는 방식의 가장 큰 장점은 모든 연산이 GPU에서 계산되고 동작하기 때문에 빠르게 옷감과 유체의 상호작용으로 표현되는 다공성 재질, 다공성 흐름, 흡수, 반사, 확산 등을 모델링할 수 있다.

• Asia pacific journal of information systems
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• 제25권4호
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• pp.719-745
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• 2015

Social networking services provide individuals with an easy approach for exchanging messages with others based on interpersonal relationships. However, why individuals spread marketer-generated content (MGC) in their online social circles remains unclear. Therefore, we develop a theoretical model to examine how social capital, intrinsic motivations, personal perceptions, past behavior, and personal traits influence MGC sharing behavior of social media users in micro-blogging context. Data collected from 319 social networking users support the proposed model. The results from partial least squares analyses show that enjoyment, perceived control, and outcome expectations are significant indicators of individual's MGC sharing intention in the social broadcasting environment. Results also suggest that social capital, users' intention, and past behavior positively influence the MGC sharing behavior of users. Moreover, individual prevention pride exhibits a significant interaction effect on the relationships between users' MGC sharing and its antecedents. Implications for research and practice are discussed.

• Asia pacific journal of information systems
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• 제23권2호
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• pp.87-109
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• 2013

While many surveys show very positive attitudes on the part of consumers towards eco-friendly products, the market share actually reflecting green IT purchases remains low in most countries. The motivations behind green IT purchase behavior are still obscure. Several studies have addressed the question of green IT diffusion from economic and normative viewpoints in an attempt to interpret IT adoption behavior. This study comes at the question from a different angle, namely negative frame, examining threat and coping behaviors using the Ordered Protection Motivation (OPM) model and threat appraisal theory. The results show that attitudes toward fairness and positive change, which are precedents of threat appraisal, play an important role in determining threat appraisal. Perceived threats in the green IT arena include habit change and ecological change. Appraisal for coping with these threats directly affects initial adoption behaviors regarding available green IT, and then indirectly encourages the purchase of new green IT products.

• 경영정보학연구
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• 제12권3호
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• pp.89-116
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• 2010

세계적으로 소프트웨어 시장은 매우 빠르게 변화하고 있으며, 다양한 종류의 소프트웨어 중 오픈소스 소프트웨어(Open Source Software: OSS)는 소프트웨어 산업의 화두로 등장하고 있다. 지난 몇 년간 OSS 시장은 매년 26%씩 성장하여, 2011년에는 대략 58억 달러 규모의 시장으로 성장할 것이다. 신흥 소프트웨어 개발국인 우리나라의 경우 OSS의 원천기술 확보와 산업전반으로 OSS 확산을 통해 선진국과의 기술격차를 해소할 수 있는 대안으로 대두되고 있다. 2007년을 기점으로 OSS 시장이 성숙기 단계로 접어들고 있으면서 이 기술에 대해 이전에 존재하던 많은 장벽들이 하나씩 해결되고 있다. 하지만 국내의 OSS 사용은 아직까지 초보 단계로 OSS가 가지고 있는 여러 장점들을 기업들이 충분히 활용하지 못하고 있는 실정이다. 이러한 장벽들을 해결하기 위해 지금까지 OSS 활성화를 위한 정책 및 정성적 연구가 많이 이루어져왔다. 하지만, 정책적 연구의 결과가 현업에 있는 기업의 실정과는 맞지 않는 부분들이 많아 OSS에 대한 확산이 아직까지는 미비하다. 이는 곧 실제 사용자(기업) 관점에서 어떤 요소들이 OSS 수용으로 이끄는지, 기업들이 정부에 무엇을 원하는지에 대한 서로간의 이해가 미비해왔다고 할 수 있다. 이와 같이 OSS에 대한 기존연구의 한계점을 극복하기 위해 본 연구에서는 OSS 수용에 영향을 주는 조직의 내재적 요소로 조직필요성 요인(변혁적 리더쉽, 적응수행, 변화 준비성)과 기술필요성 요인(업무기술적합, 비용이점, 소프트웨어품질)을 제안하여 조직이 OSS에 가지는 태도와 행동 그리고 확산 과정을 사용자(기업) 관점에서 정립한 이론을 실증적으로 증명하였다. 또한 기업 관점에서 OSS 수용에 있어 조직필요성 요인과 OSS 수용 사이에서 정부지원의 역할에 대해 이론적 정립을 통해 이전 연구들과의 차별화를 두었다. 연구결과 조직필요성 요인과 기술필요성 요인의 비용이점과 소프트웨어 품질 모두 OSS 수용에 중요한 영향을 마치는 것으로 나타났으며, 정부지원의 조절효과 역시 기업 실무자들에게 OSS 수용에 있이 중요한 영향용 주는 것으로 나타났다. 본 연구를 통해 기존의 OSS 연구의 한계점을 극복하고, 나아가 국내 OSS 활성화를 위해 초석이 되는 이론적 근거를 마련할 수 있다.

• 대한공간정보학회지
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• 제19권4호
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• pp.13-21
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• 2011

3D City 모델로부터 CFD 모델 입력자료를 생성하여 모델링 품질을 향상시키고 CFD 모델링 결과를 3D 모델과 통합하여 사실적이고 쉽게 인지할 수 있는 시각화 방법에 대하여 연구하였다. 국토지리정보원에서 구축한 3D City 모델을 이용해 세밀도와 정확도가 향상된 CFD 모델 입력자료를 생산하여 적용함으로써 상세한 도시공간구조를 반영하는 향상된 CFD 모델을 생산하였다. CFD_NIMR_SNU 모델로부터 바람의 흐름과 오염물질 확산을 시뮬레이션 하였으며 3D City Model과 CFD 모델을 통합하여 동적으로 시각화 하였다. 본 대기환경 시각화 도구는 도시기후 계획 및 관리에 있어 의사결정을 위한 시각적 소통능력을 향상시켜 비용과 시간을 최소화할 것이다.

• 한국컴퓨터정보학회논문지
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• 제22권11호
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• pp.65-71
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• 2017

An integrated water environment management system is necessary in improving water quality, properly allocating water resources, and supporting socio-economic development. Specifically, water quality management system using web map can be an efficient approach to accomplish this system. This paper aims to construct a dynamic water quality management system to reflect a water environment management system which includes three sub-models with consideration of their interrelationships (a socio-economic model based on dynamic Input-Output model, a water resources cycle model, and a water pollutants flow model). Based on simulation, the model can precisely estimate trends of water utilization, water quality, and economic development under certain management targets, and propose an optimal plan. This study utilized the model to analyze the potential of using reclaimed water to accomplish local water environment management and sustainable development plan while exploring the applicable approaches. This study indicates that the constructed water environment management system can be effective and easily adopted to assess water resources and environment while improving the trade-off between economic and environment development, as well as formulate regional development plan.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2008년도 International Symposium on Remote Sensing
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• pp.433-436
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• 2008

A demand on the spatial data management has been rapidly increased with the introduction and diffusion process of ITS, Telematics, and Wireless Sensor Network, and many different people use the digital map that offers various thematic spatial data. Spatial data for digital map can manage to tile-based and feature-based data. The existing tile-based digital map management systems have difficult problems of data construction, history management, and updating based on a spatial object. In order to solve these problems, this paper proposed the data model for the feature-based digital map management system that is designed for feature-based seamless map, history management, real-time updating of spatial data, and analyzed the validity and utility of the proposed model.

• Journal of Information Display
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• 제10권4호
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• pp.143-148
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• 2009

The theoretical current density equations for organic semiconductors was derived according to the internal carrier emission equation based on the diffusion model at the Schottky barrier contact and the mobility equation based on the field dependence model, the so-called "Poole-Frenkel mobility model." The electric field becomes constant because of the absence of a space charge effect in the case of a higher injection barrier height and a lower sample thickness, but there is distribution in the electric field because of the space charge effect in the case of a lower injection barrier height and a higher sample thickness. The transition between the injection- and bulk-limited currents was presented according to the Schottky barrier height and the sample thickness change.