• Smart Structures and Systems
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• 제14권4호
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• pp.617-641
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• 2014

The energy constraint is still a common issue for the practical application of wireless sensors, since they are usually powered by batteries which limit their lifetime. In this paper, a practical compound energy efficiency strategy is proposed and realized in the implementation of a real time wireless sensor platform. The platform is intended for wireless structural monitoring applications and consists of three parts, wireless sensing unit, base station and data acquisition and configuration software running in a computer within the Matlab environment. The high energy efficiency of the wireless sensor platform is achieved by a proposed adaptive radio transmission power control algorithm, and some straightforward methods, including adopting low power ICs and high efficient power management circuits, low duty cycle radio polling and switching off radio between two adjacent data packets' transmission. The adaptive transmission power control algorithm is based on the statistical average of the path loss estimations using a moving average filter. The algorithm is implemented in the wireless node and relies on the received signal strength feedback piggybacked in the ACK packet from the base station node to estimate the path loss. Therefore, it does not need any control packet overheads. Several experiments are carried out to investigate the link quality of radio channels, validate and evaluate the proposed adaptive transmission power control algorithm, including static and dynamic experiments.

• 한국빅데이터학회지
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• 제3권1호
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• pp.83-94
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• 2018

본 연구의 목적은 플랫폼 비즈니스 모델의 초기 활성화 문제점인 Chicken & Egg Problem 이슈를 짚어보고자 한다. 이를 위해 인터뷰 기반의 탐색적 연구를 수행하여 UGC 플랫폼의 초기 활성화 방안에 대해 각 요인들의 인과관계와 영향을 분석하였다. 본연구의 결과를 통해 전략적 시행착오의 오류를 최소화하는데 기여하고자하며 또한, 투자자 측면의 UGC 스타트업에 투자함에 있어 피투자기업의 마일스톤상 현재 위치를 알 수 있도록 해 객관적인 투자의사 결정을 할 수 있는데 실무적 시사점을 제공할 수 있을 것으로 기대한다.

• Journal of Information Technology Applications and Management
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• 제21권1호
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• pp.137-150
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• 2014

The following study specially aims to market platform in the mobile circumstance. The characteristics of customers and infrastructure are handled by market platform under the new media. These characteristics will be revealed based on the unification of organizational structure and interaction of information structure in the relationship marketing. This study investigates what characteristics and impact of infrastructure of Market Platform will affect the cognitive impact on both buyers and sellers to clarify the impact on Perceived integratedness and Interactive Accessibility of the shopping process. Through this investigation, modeling for the impact that new media environment will attract Market Platform will be developed from the investigation of attractiveness of mobile market platform environment. Changes in the technical media environment gave the characteristics of the customer in the market platform, so consumers could involve not only consumed, but also manufactured. Thus, it is possible to increase the attractiveness if market must be able to not only for the convenience of shopping, but also make people to enjoy the experience of value co-creation. In other words, the new media, as a result of affecting the marketing system, mobile market platform is organized on the base of the market communication. Perceived integratedness and Interactive Accessibility, 2 properties of new media increase the co-creation experience and perceived convenience in the market platform of their customers. Therefore, the structure of market platform that enhance the co-creation experience and perceived convenience has higher attractiveness. They create beneficial experience to the customers and productive values to the producers as well.

• 한국IT서비스학회지
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• 제21권5호
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• pp.15-28
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• 2022

Recently, government agencies are actively adopting the platform model as a means of public policy. However, existing studies on the public platform are minimal and have focused on user experiences or the possibility of public usage of the platform model. Now the research concerning building governance structure and utilizing network effects of the platform after adopting the platform model in the public sector is keenly required. This study intended to ignite academic dialogue on the governance of public platforms in the context of digital transformation. This study focused on a case of the 'Special delivery,' a public delivery app established by Gyeonggi-do. In order to analyze the characteristics of the public platform and its governance structure, data were collected from press releases, policy reports, and news articles. Data was analyzed using the frame of Hagui's platform design factors and Ansell & Gash's collaborative governance model. The results of the public platform analyses showed 1) incompleteness in the value trade-off accounting, which was designed for platform business based on general cost-benefit analysis, and 2) a closed governance structure that limits direct participation of diverse user groups(i.e., service provider, customer) in order to enhance providers' utility by preventing customers' excessive online activities. The results of this study provided theoretical and policy implications regarding designing the strategy for accounting for value trade-offs and functioning governance structure for public platforms.

• Spatial Information Research
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• 제22권3호
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• pp.9-21
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• 2014

공간정보 환경이 최근 플랫폼 중심으로 급격히 전환되고 있다. 플랫폼을 기반으로 공간정보 인프라를 구축할 경우 비용과 시간을 절약할 수 있을 뿐 아니라 공간정보 인프라의 일관성과 안정성을 유지하는데도 기여할 수 있다. 이에 우리나라도 공간정보 오픈플랫폼(V-World)을 구축 운영하고 있으며, 해외 수출 가능성을 모색하고 있다. 이 연구의 목적은 개발도상국가인 캄보디아와 신흥선진국인 아부다비 에미리트의 공간정보 인프라 현황을 구성요소별로 비교하여 국가별 해외 수출 전략을 도출하는데 있다. 캄보디아는 해외 원조를 통해 공간정보 사업을 수행하는 개발도상국이며, 아부다비 에미리트는 풍부한 오일머니의 자금력으로 해외 선진기술과 고급 인력의 적극적인 유치를 통해 공간정보 사업을 수행하는 신흥선진국이다. 이 연구에서는 두 개의 국가별 공간정보의 특성을 고려하여 캄보디아 모델과 아부다비 모델이라는 수출 모델을 정립하고, 각각의 모델에 대한 공간정보 오픈플랫폼 수출 방식과 해외 진출 전략 및 재원조달 방안을 제시하였다.

• ETRI Journal
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• 제30권1호
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• pp.141-151
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• 2008

In this paper, we introduce a new verification platform with ARM- and DSP-based multiprocessor architecture. Its simple communication interface with a crossbar switch architecture is suitable for a heterogeneous multiprocessor platform. The platform is used to verify the function and performance of a DVB-T baseband receiver using hardware and software partitioning techniques with a seamless hardware/software co-verification tool. We present a dual-processor platform with an ARM926 and a Teak DSP, but it cannot satisfy the standard specification of EN 300 744 of DVB-T ETSI. Therefore, we propose a new multiprocessor strategy with an ARM926 and three Teak DSPs synchronized at 166 MHz to satisfy the required specification of DVB-T.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1863-1866
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• 2005

In this paper we propose a platform that is applicable to low altitude remote sensing. Basic idea of the platform is based on the model helicopter. On big difference from the conventional model helicopter is that our platform has four main rotors. Furthermore, vision control strategy is introduced so that operator can use the platform without any specialized intensive knowledge

• Journal of Information Technology Applications and Management
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• 제27권2호
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• pp.51-71
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• 2020

Technological innovation can be both an opportunity and a crisis to take the initiative in the ecosystem, and companies are constantly competing to lead the platform within the ecosystem, including innovation in new products and services, absorption or integration of related industries. To cope with this rapid change in the environment today, it is essential to define the corporate ecosystem and platform business, and to understand the role and characteristics of users. This study seeks to conduct research on the usefulness, enjoyment, technicality, facilitation conditions, and causes of social impact on platform service loyalty to users of Kakao services. And this study will enable platform service providers through apps to use them as the basis for building business strategies in the service introduction phase.

• Spatial Information Research
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• 제20권4호
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• pp.37-45
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• 2012

현재의 공간정보서비스는 스마트 사회의 도래에 따라 정보화 사회에서 축적된 공간정보의 콘텐츠 및 기술적 자산을 기반으로 스마트 사회에 걸맞은 모습으로 새롭게 전환되어야 할 필요가 있다. 본 연구는 공간정보 오픈플랫폼이 보다 경쟁력 있고 지속적인 자생력을 갖추기 위하여 공간정보 소셜플랫폼으로 전환해야 하는 필요성을 제시하였다. 공간정보 오픈플랫폼이 공간정보 소셜플랫폼으로 점진적으로 진화하기 위한 소셜화의 요구조건들을 P. Savalle가 제시한 소셜플랫폼이 갖추어야 할 주요 개념을 기준으로 검토하였다. 이를 기반으로 스마트 사회에 대응한 공간정보 서비스의 구현기반으로서 공간정보 소셜플랫폼의 개념과 플랫포머로서의 정부의 역할을 제시하였다.

• 한국경영과학회지
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• 제35권4호
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• pp.55-79
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• 2010

This study deals with a model for platform competition in a two-sided market. We suppose there are both direct and indirect network externalities between suppliers and users of each platform. Moreover, we suppose that both users and suppliers are distributed in their relative affinity for each platform type. That is, each user [supplier] has his/her own preferential position toward each platform, and users [suppliers] are horizontally differentiated over [0, 1]. And for analytical tractability, some parameters like direct and indirect network externalities are the same across the markets. Given the parameters and the pricing profile, users and suppliers conduct subscription game, where participants select the platform that gives them the highest payoffs. This game proceeds according to a replicator dynamics of the evolutionary game, which is simplified by properly defining gains from participant's strategy in the subscription game. We find that depending on the strength of these network effects, there might either be multiple stable equilibria, at which users and suppliers distribute across both platforms, or one unstable interior equilibrium corresponding to the market tipping in favor of either platform. In both cases, we also consider the pricing power of competing platform providers under the framework of the Stackelberg game. In particular, our study examines the possible effects of the type of competition between platform providers, which may constrain the equilibrium selection in the subscription game.