• Smart Media Journal
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• v.10 no.2
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• pp.92-99
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• 2021

Smart space is a technology that supports humans by interacting with the surrounding environment. Smart space has a built-in dynamic intelligent environment. This paper proposes a framework that provides user-customized dynamic intelligent environments in smart spaces. In the existing research that provides user-customized intelligent services, users' interests are only explicitly analyzed, and smart spaces are not considered. Implicit interest analysis can suggest a service that may be of interest to users rather than explicit interest analysis, but it requires higher performance than explicit interest analysis. Smart spaces can obtain useful information by interacting with information in the space. The framework proposed in the study uses a proximity-based social network of things to fit into a smart space. In addition, the implicit interest analysis provides intelligent information for smart spaces using the social media information and spatial information objects. In addition, we propose a method to prevent performance degradation while maintaining accuracy in consideration of the characteristics of the smart space.

• The Transactions of the Korea Information Processing Society
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• v.13 no.2
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• pp.1-12
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• 2024

Modern cities are actively adopting smart city services to address various urban challenges. Geospatial information acts as the foundational infrastructure of smart cities, promoting the sustainable development of urban areas. Consequently, as the standardization and utilization of geospatial information increase, the efficiency and sustainability of smart city operations improve. To achieve this, collaboration among diverse stakeholders is crucial for delivering optimal smart city services based on geospatial information. This paper defines smart city services, focusing on transportation and building-energy domains, based on the life cycle of geospatial information technology. Emphasis is placed on the importance of applying and utilizing geospatial information standards. Additionally, this paper proposes the Smart City based on Geospatial Information standards (SCGI) framework to provide insights into standardizing smart city services mapped to geospatial information standards. This research suggests a new paradigm for standardizing smart city services using geospatial information standards to offer customized solutions, thereby discussing the future development possibilities of smart cities.

• Korea Information Processing Society Review
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• v.18 no.2
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• pp.43-48
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• 2011

• Information Systems Review
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• v.13 no.3
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• pp.99-121
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• 2011

With the advancement of mobile information technology, the era of smart work emerges as a means for enabling us to overcome temporal and spatial constraints. Thanks to smart mobile devices with seamless access, organizations can assign tasks to employees and provide services to the appropriate customers in mobile environments. In addition, smart work facilitates the improvement of coordination and collaboration among individuals and groups performing organizational tasks. The dramatic performance improvement is manifest by utilization of smart work in organizations. Therefore, the interest in the introduction of smart work is growing. With the lens of time-geography, this study investigates what makes smart work successful. This research, especially, concentrates on the processes for overcoming the temporal and spatial constraints in the field. A case study of the Seoul Metropolitan Rapid Transit Talk and Flash (SMRT T&F) is developed and analyzed through the framework of time-geography and the implementation processes and success factors of SMRT T&F are investigated.

• Journal of Digital Convergence
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• v.13 no.6
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• pp.113-124
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• 2015

Convergence-based Smart Work in Korea started from 2010 with a purpose to improve work-life balance. Up to now the previous research on Smart Work has been studied in the context of the pre-adoption or the adoption stage, and shows some limitations not finding out the effort to manage change, the issues occurred in the process of adopting Smart Work, and the performance after adopting Smart Work. The period after adoption is when users continue to use ICT and intended objectives can be accomplished. Therefore, this study investigated the process that the organizations adopting Smart Work have overcome spatial and temporal constraints and the performance that they have achieved after adopting it. Though the framework integrating time-geography theory with technology acceptance stage, this research interviewed four managers of three organizations being responsible for adopting and operating Smart Work and provided its adopting process and performance of each organization.

• Journal of Digital Contents Society
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• v.15 no.4
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• pp.527-532
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• 2014

Recently, due to the proliferation of mobile smart devices, the inovation of bigdata, which analyzes and processes massive data collected from various sensors implaned in smart devices, expands to LBSs. Many location prediction techniques for moving objects have been studied in literature. However, as the majority of studies perform location prediction which depends on specific applications, they hardly reflect the technical requirements of next-generation spatio-temporal information services. Therefore, this paper proposes the design of general-purpose distributed moving object prediction query processing framework that is capable of performing primitive and various types of queries effectively based on massive spatio-temporal data of moving objects in real-world space networks.

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.7
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• pp.133-141
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• 2014

Social needs of smart work have been increasing throughout the worldwide and several developed countries have been developing enabled framework for smart work's coming proceed for a long time. The government is leading the smart work in Korea to devise a more efficient and competitiveness. Design of public collaboration solution has been proposed to provide the integration among a variety of smart environments and the interoperability between end-to-end. This paper takes a objective to develop a universal solution applicable to between traditional PC and mobile devices, such as a home station, and to built smart workplace linking workplace, outside space and the home. In particular, this paper offer entry-level advantages of public collaboration solution in conjunction with collaboration platform and phone platform owned by mobile communication platform company are mutually interfaced and aimed at small and medium-sized businesses and public.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.5
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• pp.173-178
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• 2014

Smart devices linked to high speed networks enable us to obtain location dependent data at anywhere and anytime. In this environment, a wireless data broadcast system can deal with enormous data request from a great number of clients effectively. In order to set up an efficient wireless data broadcast system, various data scheduling and indexing schemes have been proposed. However, a simulation framework to evaluate the schemes is not reported yet. In this paper, we design and develop a simulation framework for a wireless data broadcast system. The developed simulation framework can evaluate quickly a wireless data broadcast system and has scalability to adopt various data scheduling and indexing schemes for wireless data broadcasting.

• Broadcasting and Media Magazine
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• v.26 no.4
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• pp.48-60
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• 2021

복잡한 알고리즘을 요구하는 3차원 공간 정보 취득 기술은 대부분 고성능의 하드웨어를 필요로 한다. 그러나 최근 스마트폰과 같은 모바일 플랫폼의 성능이 급격히 발전하면서 기존 알고리즘을 가속화해 온 디바이스로 이식하는 연구가 증가하고 있다. 이러한 추세에 따라 본 기고문은 플랫폼 제한 없는 GPU 병렬처리 프레임워크 OpenCL을 활용한 3차원 공간 정보 취득 기술의 가속화 방법을 소개하고자 한다. 본 고의 구성은 다음과 같다. 먼저 모바일 GPU 환경에서의 OpenCL 최적화 방법을 살펴본다. 이후 고전적인 기하학 기반의 스테레오 정합 알고리즘을 가속화한 방법을 소개한다. 마지막으로는 심층 신경망 네트워크와 가속화된 고전적 스테레오 알고리즘을 결합한 온 디바이스 친화적인 융합 알고리즘을 소개한다.

• Information and Communications Magazine
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• v.31 no.5
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• pp.27-33
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• 2014

오늘날 사람들은 PC, 테블릿, 스마트폰 등 다양한 모바일기기를 이용하여 시간과 공간의 제약 없이 인터넷에 접속하여 전자금융 서비스를 편리하게 이용하고 있다. 이렇게 전자금융 서비스를 편리하게 이용하고 있지만, 사용자의 금융정보도 온라인을 통해 전송되고 있어서 이를 노린 다양한 해킹위협에 노출 되어 있다. 더욱이 금전적 이득을 노리고 불법적으로 금융정보를 탈취하는 등의 전자금융 이용자를 대상으로 하는 악의적인 목적의 다양한 해킹공격이 발생하고 있다. 이러한 해킹위협에 대응하기 위하여 OTP, 보안카드 등의 인증매체를 사용하고 있으나, 여러 서비스 제공자에 접속하기 위하여 다수의 인증매체 를 발급해야 하는 불편이 뒤따르고 있어 통합인증기술에 대한 요구가 증가하고 있다. 국내외 표준화 기구에서 활발하게 추진하고 있는 전자금융 통합인증기술은 스마트환경에 적합한 다양한 인증기술을 통합하여, 사용자와 여러 서비스 제공자가 공동으로 이용할 수 있도록 하는 것을 목표로 한다. 통합인증기술은 크게 여러 사용자와 서비스 제공자를 통합하여 서비스를 제공할 수 있는 프레임워크와 사용자인증 등에 필요한 OTP, BIO 등 다양한 요소 인증기술, 그리고 서비스 제공에 필요한 보안 요구사항으로 구분할 수 있다. 본 논문에서는 통합인증 프레임워크, 요소 인증기술, 보안 요구사항의 국내외 표준을 분석하고 표준화의 동향을 알아봄으로써 다양한 환경에서 안전하고 편리하게 사용할 수 있는 통합인증기술을 전망해본다.