3,659,283 research outputs found

    Introduction : user studies for digital library development

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    Introductory chapter to the edited collection on user studies in digital library development. Contains a general introduction to the topic and biographical sketches of the contributors.peer-reviewe

    Digital adaptive flight controller development

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    A design study of adaptive control logic suitable for implementation in modern airborne digital flight computers was conducted. Two designs are described for an example aircraft. Each of these designs uses a weighted least squares procedure to identify parameters defining the dynamics of the aircraft. The two designs differ in the way in which control law parameters are determined. One uses the solution of an optimal linear regulator problem to determine these parameters while the other uses a procedure called single stage optimization. Extensive simulation results and analysis leading to the designs are presented

    Shared Collection Development, Digitization, and Owned Digital Collections

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    While library models already exist for sharing physical materials and joint licensing, this paper envisions an aspect of future collections involving a national digital collection owned, not licensed, by libraries. Collaborative collection development, digitization, and digital object management of owned collections can benefit societies in multiple ways, from expanding access to users otherwise unable to reach these materials, to preserving content even when disaster strikes, to reducing duplication of effort and expense in collection or digitization. This article will explore both the benefits of and the challenges to this type of collaboration

    Flight test validation of a design procedure for digital autopilots

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    Commercially available general aviation autopilots are currently in transition from an analogue circuit system to a computer implemented digital flight control system. Well known advantages of the digital autopilot include enhanced modes, self-test capacity, fault detection, and greater computational capacity. A digital autopilot's computational capacity can be used to full advantage by increasing the sophistication of the digital autopilot's chief function, stability and control. NASA's Langley Research Center has been pursuing the development of direct digital design tools for aircraft stabilization systems for several years. This effort has most recently been directed towards the development and realization of multi-mode digital autopilots for GA aircraft, conducted under a SPIFR-related program called the General Aviation Terminal Operations Research (GATOR) Program. This presentation focuses on the implementation and testing of a candidate multi-mode autopilot designed using these newly developed tools

    Invest to Save: Report and Recommendations of the NSF-DELOS Working Group on Digital Archiving and Preservation

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    Digital archiving and preservation are important areas for research and development, but there is no agreed upon set of priorities or coherent plan for research in this area. Research projects in this area tend to be small and driven by particular institutional problems or concerns. As a consequence, proposed solutions from experimental projects and prototypes tend not to scale to millions of digital objects, nor do the results from disparate projects readily build on each other. It is also unclear whether it is worthwhile to seek general solutions or whether different strategies are needed for different types of digital objects and collections. The lack of coordination in both research and development means that there are some areas where researchers are reinventing the wheel while other areas are neglected. Digital archiving and preservation is an area that will benefit from an exercise in analysis, priority setting, and planning for future research. The WG aims to survey current research activities, identify gaps, and develop a white paper proposing future research directions in the area of digital preservation. Some of the potential areas for research include repository architectures and inter-operability among digital archives; automated tools for capture, ingest, and normalization of digital objects; and harmonization of preservation formats and metadata. There can also be opportunities for development of commercial products in the areas of mass storage systems, repositories and repository management systems, and data management software and tools.

    PENGEMBANGAN BAHAN AJAR DIGITAL INTERAKTIF INTEGRATIF PEMBELAJARAN MENULIS TEKS EKSPOSISI KELAS X SMA

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    The competence of the 21st century in the era of the industrial revolution requires the integration of information and communication technology in the world of education so that the selection of teaching materials must also be adjusted to the demands of changing times. The purpose of this study is to develop product design, teaching material products, and the feasibility of interactive digital teaching materials integrative learning to write exposition texts for grade X high school. This development research uses the R2D2 model (Reflective, Recursive, Design, and Development). The product resulting from this development research is in the form of a book called BUDESI (Exposition Digital Book) which is the development of interactive digital teaching materials integrative learning to write exposition texts for grade X high school and user manuals. Based on the results of product tests conducted by technology experts, material experts, practitioners, and respondents (field tests) show that the integrative interactive digital teaching materials packaged in BUDESI are very feasible and can be applied to learning to write exposition texts for grade X high school students

    Digital lace:a collision of responsive technologies

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    Designing with properties such as colour-change and light using electronics and digital control brings new challenges within art and design, and a range of new possibilities for aesthetics, tactility and functionality. Heimtextil 2014 (accessed April 2014) promotes emerging materials and technologies as one of four trends which highlight the increasing demand for unique products utilizing novel material properties and digital making. However, there is still limited insight into the creative potential of these materials that are fundamental to the exploitation of 'smart' material properties, the development of new 'smart' surfaces and digital tools that facilitate designing with colour-change and light-emitting properties specific to textiles. This submission to the Fiber arts category presents new material concepts as Digital Lace: a novel, multifaceted textile which will be presented as an interactive table runner for a digitally manufactured console table. Digital Lace explicitly pools together the digital-craft skills base and disparate expertise of printed textile practitioner and thermochromic specialist, Sara Robertson (SR) and constructed textile practitioner and light-emitting optical fibre specialist, Sarah Taylor (ST). Within the context of 'smart', material development and experimentation, Digital lace exploits and amalgamates the responsive technologies of dye and fibre with digital-control
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