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- 저자 : Mikael Fernandus Simalango (검색결과 3 건)
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On Feasibility of Enterprise Cloud for Scientific Computing
Mikael Fernandus Simalango,Sangyoon Oh 한국정보과학회 2009 한국정보과학회 학술발표논문집 Vol.36 No.1
As an emerging paradigm for future computing and internet, cloud computing offers expanded centralized-computing approach to processing and disseminating information. One salient feature of cloud computing is leasing whereas cloud owner may grant temporary possession of resources to interesting parties based on contract. This can be reflected as an opportunity for academia to take benefit from the existence of the clouds by using them for processing scientific data. In this paper, we study the feasibility of utilizing enterprise cloud for scientific computing and also propose an architectural design for cloud-based scientific computing.
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XDS-I Gateway Development for HIE Connectivity with Legacy PACS at Gil Hospital
Mikael Fernandus Simalango,김영철,서용태,최영환,조용균 대한의료정보학회 2013 Healthcare Informatics Research Vol.19 No.4
Objectives: The ability to support healthcare document sharing is imperative in a health information exchange (HIE). Sharing imaging documents or images, however, can be challenging, especially when they are stored in a picture archiving and communication system (PACS) archive that does not support document sharing via standard HIE protocols. This research proposes a standard-compliant imaging gateway that enables connectivity between a legacy PACS and the entire HIE. Methods: Investigation of the PACS solutions used at Gil Hospital was conducted. An imaging gateway application was then developed using a Java technology stack. Imaging document sharing capability enabled by the gateway was tested by integrating it into Gil Hospital’s order communication system and its HIE infrastructure. Results: The gateway can acquire radiology images from a PACS storage system, provide and register the images to Gil Hospital’s HIE for document sharing purposes, and make the images retrievable by a cross-enterprise document sharing document viewer. Conclusions: Development of an imaging gateway that mediates communication between a PACS and an HIE can be considered a viable option when the PACS does not support the standard protocol for cross-enterprise document sharing for imaging. Furthermore, the availability of common HIE standards expedites the development and integration of the imaging gateway with an HIE.
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Adopting Cloud Computing and Designing a Constraints-based Cloud System in an Organization
Mikael Fernandus Simalango,강문영,오상윤 한국엔터프라이즈아키텍처학회 2010 정보기술아키텍처연구 Vol.7 No.2
Cloud computing is penetrating into various domains and environments, from theoretical computer science to economy, from marketing hype to educational curriculum and from R&D lab to enterprise IT infrastructure. Yet, the currently developing state of cloud computing leaves several issues to address that affects cloud computing adoption across organizations. In this paper, we illustrate the state of the art of infrastructural cloud, which is essential in the decision making on cloud adoption,and highlight the challenges that can limit the scale and speed of the adoption. We then describe the cloud adoption process in an organization by showing the possible approaches and a mechanism for transforming legacy infrastructure into a virtual infrastructure-based cloud. A strategic framework for designing a high performance cloud system is also suggested to be applied when transformation into a cloud-based deployment model collides with some constraints. To show the advantage of using the framework in guiding the design of such cloud system, we provide an implementation of the framework in the design of a budget-constrained high availability cloud system.
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