6,605,049 research outputs found

    A Medium-Resolution Near-Infrared Spectral Library of Late Type Stars: I

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    We present an empirical infrared spectral library of medium resolution (R~2000-3000) H (1.6 micron) and K (2.2 micron) band spectra of 218 red stars, spanning a range of [Fe/H] from ~-2.2 to ~+0.3. The sample includes Galactic disk stars, bulge stars from Baade's window, and red giants from Galactic globular clusters. We report the values of 19 indices covering 12 spectral features measured from the spectra in the library. Finally, we derive calibrations to estimate the effective temperature, and diagnostic relationships to determine the luminosity classes of individual stars from near-infrared spectra. This paper is part of a larger effort aimed at building a near-IR spectral library to be incorporated in population synthesis models, as well as, at testing synthetic stellar spectra.Comment: 34 pages, 12 figures; accepted for publication at ApJS; the spectra are available from the authors upon reques

    Designerly Tools

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    An assumption behind this paper is that research aimed at improving interaction design practice is not as successful as it could be. We will argue that one reason for this is that the understanding of what constitutes designerly tools is not enough recognized among those who propose new tools for interaction design. We define designerly tools as methods, tools, techniques, and approaches that support design activity in way that is appreciated by practicing interaction designers. Based on a two empirical studies, we have developed a framework and a way of studying designers and their tools. We discuss some insights about what characterizes designerly tools and what kind of implications these insights might have for the further development of tools aimed at supporting design practice. Keywords: Design, Tools, Interaction Design, Activities, Support For Design</p

    Ergonomic Redesign of Working Tools Increases Performance of Traditional Coconut Oil Makers in the District of Dawan, Klungkung

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    The business of producing coconut oil in the district of Dawan, Klungkung is oneexample of small-scale home industries in the rural area. The level of working productivityof the oil makers can be categorized as relatively low, as viewed from the aspect of thefollowing indicators: (a) level of working burden, (b) musculoskeletal complaints, (c) levelof fatigue or tiredness, and (d) level of productivity. One factor that causes the lowproductivity is the fact that the working tools used in this industry are non-ergonomicallydesigned such as: (1) tool for peeling off the coconut fibers, (2) tool for taking the coconutflesh, (3) tool for grating the coconut flesh, (4) tool for extracting milk from the watermixedgrated coconut, (5) stove for boiling the coconut milk. Based on the above problemsbackground, it is necessary to make more ergonomic new design or redesign of the toolsthat are used by the coconut oil makers in the district of Dawan in order to increase theirworking performance or productivity.This research was carried out using treatment by subject design by comparing beforeand after treatment involving 22 female subjects selected by simple random method fromall female coconut oil makers in the studied area. Before treatment the research subjectswere asked to make coconut oil as usual with their traditional tools. After an interval ofwashing out period was given, the subjects entered the treatment phase in which they wereasked to make coconut oil by using the tools already redesigned ergonomically. The dataobtained from the research were analyzed by t-paired test at a significance level of 5%.Results of the analysis showed as follows: (1) average of working heart rate beforetreatment was 108.49 ± 0.95 pulse /minute and after treatment 91.92 ± 1.91 pulse /minute,indicating a decrease of workload from moderate to mild one (decrease of working heartrate of 16.59 pulse/minute or 14.69%); (2) average of musculoskeletal complaints beforetreatment was 51.73 ± 1.36 and after treatment 36.79 ± 0.83 (a decrease of 14.94 or26.17%); (3) average of fatigue before treatment was 66.75 ± 3.60 and after treatment49.50 ± 3.28 (a decrease of 17.19 or 25.83%); (4) average of working productivity beforeand after treatment was 35.86 ± 1.09 and 48.66 ± 1.10, respectively (an increase of 12.81 or35.71%). Based on evaluation of investment yield, the NVP value in a five-year period Rp.11.503.431,- &gt; 0, PBP 9.22 months &gt; 0, and RoI 32.54 &gt; 13% (rate of interest commonlyapplied in 2008).It is concluded that redesign of working tools to be more ergonomic has proven to beable to increase the working performance of coconut oil makers and hence worth investing.Novelty of this research is in the positive results related to ergonomic redesigning of thetools for making coconut oil in the district of Dawan, Klungkung by approaches to being systemic, holistic, interdisciplinary, participatory, and appropriate technology USAge.Further studies on similar related working issue should focus on the aspects of workingenvironment, especially on how to overcome smoke pollutant in the kitchen area, on moreproper work station and working organization or on that related to production quality of thecoconut oil by generating maximally all the potential already in existence among the localtraditional coconut oil makers

    Wearable learning tools

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    In life people must learn whenever and wherever they experience something new. Until recently computing technology could not support such a notion, the constraints of size, power and cost kept computers under the classroom table, in the office or in the home. Recent advances in miniaturization have led to a growing field of research in ‘wearable’ computing. This paper looks at how such technologies can enhance computer‐mediated communications, with a focus upon collaborative working for learning. An experimental system, MetaPark, is discussed, which explores communications, data retrieval and recording, and navigation techniques within and across real and virtual environments. In order to realize the MetaPark concept, an underlying network architecture is described that supports the required communication model between static and mobile users. This infrastructure, the MUON framework, is offered as a solution to provide a seamless service that tracks user location, interfaces to contextual awareness agents, and provides transparent network service switching

    Configuration Tools: Working Together

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    Since the LISA conferences began, the character of a typical ‘‘large installation’ ’ has changed greatly. Most large sites tended to consist of a comparatively small number of handcrafted ‘‘servers’ ’ supporting a larger number of very similar ‘‘clients’ ’ (which would usually be configured with the aid of some automatic tool). A modern large site involves a more complex mesh of services, often with demanding requirements for completely automatic reconfiguration of entire services to provide fault-tolerance. As these changes have happened however, the tools available to provide configuration management for a site have not evolved to keep pace with these new challenges. This paper looks at some of the reasons why configuration tools have failed to move forward, and presents some suggestions for enabling the state of the art to advance. Background and Motivation Configuration Tools have been an important theme at LISA for many years, and most conferences include one or more papers in this area. Despite increasing recognition of the importance of the configuratio

    Big Data Visualization Tools

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    Data visualization is the presentation of data in a pictorial or graphical format, and a data visualization tool is the software that generates this presentation. Data visualization provides users with intuitive means to interactively explore and analyze data, enabling them to effectively identify interesting patterns, infer correlations and causalities, and supports sense-making activities.Comment: This article appears in Encyclopedia of Big Data Technologies, Springer, 201
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