• 인터넷정보학회논문지
• /
• 제7권3호
• /
• pp.13-30
• /
• 2006

본 논문에서는 자동차 관리 및 진단, 차량 편의장치 제어 동의 보다 향상된 텔레매틱스 서비스 제공을 위해 단말기용 서비스 플랫폼을 설계 구현한다. 서비스 플랫폼은 텔레매틱스용 소프트웨어를 개발하는 개발자에게 하부 자동차 내부 네트워크와 각종 하드웨어 장치, 무선 네트워크 장치에 독립적인 개발방법을 제공한다. 이를 위해 각 장치별로 제공되는 서비스를 분류하고 정형화한 텔레매틱스 API(Application Programming Interface)를 설계하였다. 제안된 서비스 플랫폼은 무선 네트워크 장치들과 단말기 간의 데이터 송수신을 위한 무선 접속부분과 자동차 내부 네트워크 장치들의 서비스를 위한 CAN 네트워크 부분, 위치기반 서비스를 위해 필요한 GPS 데이터 수신부분, 그리고 이기종의 네트워크 간 통신 시 발생하는 상이한 데이터 포맷의 상호 호환성을 위한 메시지 파서 부분으로 구성된다.

• Structural Monitoring and Maintenance
• /
• 제3권2호
• /
• pp.175-194
• /
• 2016

Based on the change of traditional viscoelastic damper structure, a brand-new damper is designed to control simultaneously the translational vibration and the rotational vibration for platforms. Experimental study has been carried out on the mechanical properties of viscoelastic material and on its multi-dimensional seismic response control effect of viscoelastic damper. Three types of viscoelastic dampers with different shapes of viscoelastic material are designed to test the influence of excited frequency, strain amplitude and ambient temperature on the mechanical property parameters such as circular dissipation per unit, equivalent stiffness, loss factor and storage shear modulus. Then, shaking table tests are done on a group of single-storey platform systems containing one symmetric platform and three asymmetric platforms with different eccentric forms. Experimental results show that the simulation precision of the restoring force model is rather good for the shear deformation of viscoelastic damper and is also satisfied for the torsion deformation and combined deformations of viscoelastic damper. The shaking table tests have verified that the new-type viscoelastic damper is capable of mitigating the multi-dimensional seismic response of offshore platform.

• Journal of Power Electronics
• /
• 제16권5호
• /
• pp.1698-1705
• /
• 2016

In this paper, a hardware-in-the-loop simulation platform for MMCs is established, which connects a real time digital simulator (RTDS) and a designed MMC controller with optical fiber. In this platform, the converter valves are simulated with a small time step of 2.5 microsecond in the RTDS, and multicore technology is implemented for the controller so that the parallel valve control is distributed between different cores. Therefore, the designed controller can satisfy the requirements of real-time control. The functions of the designed platform and the rationality for the designed controller are verified through experimental tests. The results show that different modulation modes and various control strategies can be implemented in the simulation platform and that each control objective can been tracked accurately and with a fast dynamic response.

• 한국화재소방학회논문지
• /
• 제22권1호
• /
• pp.61-67
• /
• 2008

본 연구에서는 화재가 발생한 전동차가 지하철 역사에 정차된 상황에서 승강장과 터널에 설치된 환기팬 작동 유무 및 전환 시간에 따른 열 및 연기 배출 특성 예측을 위하여 수치해석을 수행하였다. 환기팬 작동 방식에 따른 온도, 일산화탄소 및 가시거리 분포를 피난자의 호흡높이를 1.7m로 고려하여 비교 분석하였다. 수치해석 결과 터널 환기팬 작동으로 인하여 승강장 내의 열 및 연기가 신속히 터널부로 배출되었다. 또한 피난 진행 중에는 승강장 환기팬을 작동하고 피난이 완전히 완료된 후 터널에 설치된 환기팬을 작동하는 것이 효과적인 배연방법임을 확인할 수 있었다.

• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2004년도 춘계학술대회 논문집
• /
• pp.379-383
• /
• 2004

국내 무선 인터넷은 서의 다른 플랫폼을 사용하는 콘텐츠 제공자의 개발환경이 서의 상이하여 무선 인터넷 활성화의 저해 요인이 되고 있다. 이러한 문제점을 해결하기 위하여 창립된 한국 무선 인터넷 표준화 포럼(KWISF： Korea Wireless Internet Standardization Forum)에서 개발한 무선 인터넷 플랫폼인 WIPI(Wireless Internet Platform for Interoperability)의 사용으로 응용프로그램의 상호 운용 및 하드웨어에 대한 독립성을 보장할 수 있게 되었다. 본 논문에서는 현재의 서로 다른 플랫폼에서 발생하는 비용을 절감할 수 있는 표준 플랫폼인 WIPI를 이용한 개발 응용 사례를 들어 WIPI의 우수성을 입증하고 활성화 방안을 모색하고자한다.

• International Journal of Safety
• /
• 제4권2호
• /
• pp.36-42
• /
• 2005

A study on fire phenomena in a subway transit mass station has been carried out as a part of disaster prevention plan at the subway station. The ventilation facilities installed in both the platform and the trackway are designed to convert into a smoke exhaust system in emergency situation, creating an environment necessary for evacuation. 3 dimensional Numerical Simulations based on the CFD are carried out using a simulation tool, Fire Dynamic Simulator. Total of six different cases are made and performances are compared each other to find optimal vents operation to ensure safer environment for evacuation at the platform area considering the installation of platform screen door.

• 한국농공학회지
• /
• 제43권4호
• /
• pp.79-88
• /
• 2001

Agricultural facilities can be designed by conceptual preliminary primary and detailed design stages. because each stage has a different objective, it must be applied to dissimilar design and analysis level. Engineers have to judge from evaluation that is estimated agricultural resources in the conceptual design stage. Methods of computer aided design are achieved to individual functions however it is inefficient to perform entire processes of design and hard to systematically accumulate results o design. Study on the integrated structural design system has been continued. but those system have adopted “closed architecture”which is known to inflexible method for developing applications. In this study the design platform is an environment that can support to integrated design system independently and an design platform is proposed by analyzing design processes using object oriented method. The concepts of software platform have resulted from several practical ideas, OOA/OOP and related some points. This paper aims at developing the software platform of a software environment to support the design phases of the agricultural facilities.

• World Technopolis Review
• /
• 제5권1호
• /
• pp.30-46
• /
• 2016

This paper is intended as an opening of a dialog on how to apply platform thinking in the development of innovation environments. It will briefly describe a new STP (Science and Technology Park) concept called 3GSP (Third Generation Science Park), which is gaining momentum in Finland. The paper explains the fundamental changes that are currently taking place in the global innovation environment and explains why platform thinking is becoming an essential element in ecosystem development. The theoretical background and classifications of platforms are described and the benefits to be gained from STP perspective are highlighted. The paper emphasizes especially the role of so called 'competence platforms' and explains the main characteristics of a fully working competence platform. The role of competence platforms in understanding serendipity and as a fundamental factor in building the team is also highlighted. The paper analyses from STP perspective several practical examples, where platform thinking supports the emergence of new innovation environments, including Urban Mill (Finland) and Meetberlage (Netherlands). The requirements for comprehensive competence platform services are presented and their potential to support community building and therefore ecosystem development is illustrated. This analysis will provide STP practitioners with new models for applying platform thinking and will help to establish co-creation, open innovation and serendipity management practices. The case studies presented will help STP management teams to evaluate the benefits of competence platforms in different contexts.

• 한국정보시스템학회지:정보시스템연구
• /
• 제31권4호
• /
• pp.101-121
• /
• 2022

Purpose This study aims to introduce a Smart-Platform for solving numerous problems in urban cities and improving citizens' convenience. This Smart-Platform is achieved by studying the City Data Hub technology to build and spread a Smart City Data Hub . Design/methodology/approach In this study, we analyzed the functions in detail and interlocking flows specific to the published City Data Hub module and designed a Smart-Platform with additional UI-based functions to improve users' convenience based on our previous experience. Findings The City Data Hub will provide a modular data hub platform functionality for application by different stakeholders. However, further research on detailed functionality and experience in interworking legacy systems will be required to apply the platform realistically. Therefore, we judged that this Smart-Platform, which supplements the City Data Hub with additional functions, would be useful for utilizing the City Data Hub in the future. Through the demonstration of the platform designed, it is also necessary to explore the direction of continuous development for the future.

• 지식경영연구
• /
• 제16권2호
• /
• pp.1-27
• /
• 2015

This paper presents a knowledge-based view of platform-centered collaborations among multiple organizations. Studies of technological innovation and knowledge creation have broadened beyond their initial emphasis on internal development within an organization or simple exchange of ideas between two parties toward complex collaboration among many organizations at the level of platform-based knowledge ecosystems. Platforms serve as an interface between different groups of producers and consumers in a variety of multi-sided knowledge markets such as smartphone operating systems and video games industries. This study is an exploratory examination to offer theoretical understanding of how the organizational capabilities of platform leaders help expand a network of platform participants. The growth of platform participants is particularly important in the early stage of any platforms as the concept of network effects suggests that the platform with the largest number of participants will capture entire markets. Building upon organization studies and network economics theory on multisided markets, this paper focuses on the role of platform leaders in expanding platform-based collaboration. In our view, platform leaders develop varying levels of three organizational capabilities to discern quality of potential participants, to attract them to actually participate in collaboration, and to maintain long-term exchange relations in the ecosystem. We suggest that the capabilities of platform leaders will have a positive effect on the expansion of platform participants to secure network effects, and also examine several contextual factors that moderate the relationship between a platform leader's capacity and platform expansion.