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Browsing by Author "Luo, Ming"

Now showing 1 - 4 of 4
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    Building Digital Libraries from Simple Building Blocks
    Suleman, Hussein; Fox, Edward A.; Krowne, Aaron; Luo, Ming; Kelapure, Rohit (Department of Computer Science, Virginia Polytechnic Institute & State University, 2003)
    Metadata harvesting has been established by the Open Archives Initiative (OAI) as a viable mechanism for connecting a provider of data to a purveyor of services. The Open Digital Library (ODL) model is an emerging framework which attempts to break up the services into appropriate components based also on the basic philosophy of the OAI model. This framework has been applied to various projects and evaluated for its simplicity, extensibility and reusability to support the hypothesis that digital libraries (DLs) should be built from simple Web Service-like components instead of as monolithic software applications.
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    Building Digital Libraries Made Easy: Toward Open Digital Libraries
    Fox, Edward A.; Suleman, Hussein; Luo, Ming (2002)
    Digital libraries (DLs) promote a sharing culture among those who contribute and those who use resources. This same approach works when building Open Digital Libraries (ODLs). Leveraging the intellectual and practical investment made in the Open Archives Initiative through an eXtended Protocol for Metadata Harvesting (XPMH), one can build lightweight protocols to tie together key components that together make up the core of a DL. DL developers in various settings have learned how to apply this framework in a few hours. The ODL approach has been effective with the Computer Science Teaching Center (www.cstc.org), the Networked Digital Library of Theses and Dissertations (www.ndltd.org), and AmericanSouth.org. Hence, to support our Computing and Information Technology Interactive Digital Educational Library (www.citidel.org) and to provide a generic capability for other parts of the US National Science, technology, engineering, and mathematics education Digital Library (www.nsdl.org), we are developing a "DL-in-a-box" toolkit. When lightweight protocols, pools of components, and open standard reference mod-els are combined carefully, as suggested in the OCKHAM discussions, both the DL user and developer communities can benefit from the principle of sharing.
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    Optical Analysis and Opto-Mechanical Design for Miniaturized Laser Illumination Module in 3D Areal Mapper
    Luo, Ming (Virginia Tech, 2000-05-09)
    A miniaturized spatial light modulator (SLM)-based structured-light illumination module with optical fiber input is designed to generate a coded 256 x 256 spots pattern for 3-D areal mapping applications. The projector uses the light from a He-Ne laser coupled to a polarization-maintaining (PM) fiber to illuminate a specially made hologram so that four virtual point sources are regenerated. The interference pattern of the four sources are filtered and modulated by an SLM. The output intensity can thus be encoded to form any arbitrary pattern through the electronic input applied to the SLM with a high speed. In this thesis, a complete optical diffraction analysis of the system is presented to provide guidelines for the optimal design of the system parameters. Through the theoretical analysis for square beam array generation, the important parameters for fabricating a hologram are given. The final system optical design and arrangement based on optical analysis are described. The detailed opto-mechanical construction of the LIM and the associated alignment, the computer simulation and the preliminary test results of the developed LIM are also provided.
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    An XML Log Standard and Tool for Digital Library Logging Analysis
    Goncalves, Marcos A.; Luo, Ming; Shen, Rao; Ali, Mir Farooq; Fox, Edward A. (2002-09-01)
    Log analysis can be a primary source of knowledge about how digital library patrons actually use DL systems and services and how systems behave while trying to support user information seeking activities. Log recording and analysis allow evaluation assessment, and open opportunities to improvements and enhanced new services. In this paper, we propose an XML-based digital library log format standard that captures a rich, detailed set of system and user behaviors supported by current digital library services. The format is implemented in a generic log component tool, which can be plugged into any digital library system. The focus of the work is on interoperability, reusability, and completeness. Specifications, implementation details, and examples of use within the MARIAN digital library system are described.