360 research outputs found

    Treelicious: a System for Semantically Navigating Tagged Web Pages

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    Collaborative tagging has emerged as a popular and effective method for organizing and describing pages on the Web. We present Treelicious, a system that allows hierarchical navigation of tagged web pages. Our system enriches the navigational capabilities of standard tagging systems, which typically exploit only popularity and co-occurrence data. We describe a prototype that leverages the Wikipedia category structure to allow a user to semantically navigate pages from the Delicious social bookmarking service. In our system a user can perform an ordinary keyword search and browse relevant pages but is also given the ability to broaden the search to more general topics and narrow it to more specific topics. We show that Treelicious indeed provides an intuitive framework that allows for improved and effective discovery of knowledge.Comment: 6 pages, 3 figure

    Amgen Material Handling

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    Amgen is a world leading pharmaceutical company that specializes in biotechnology which develops intravenous or injectable biologic medicines. With an outstanding reputation in the field of safety, quality assurance, superior scientific innovation, and continuous improvement in all aspects, Amgen’s goal is to serve patients cutting edge medications available in today’s market. With this outlook on innovation, Amgen is currently looking into a material handling solution for movement of material between its storage facilities to an IOS9 cleanliness standard laboratory. Such movement includes passing through an airlock which requires the drums containing necessary chemicals for biotechnological production to be cleaned and remain in wet-lock with a specified bleach solution. This process is currently in question since these drums are being handled manually by workers at the risk of injury. With barrels that range from twenty-two to two hundred fifty pounds, great risk is associated with repetitive movement by workers tilting and cleaning these drums, and injury prevention is the main motive for the process change. This manual movement of drums lacks sufficient ergonomics while subjecting workers to injury, and a change must be implemented. A close look will be taken at the current process, and a mechanism will be designed to assist the worker during the new improved moving and cleaning process. Factors including safety, ergonomics, cleanability, timing, and cost will be considered in respective importance. Research on current patents, literature, and competitors’ solutions to material handling will be considered in the final design of a mechanism. Devices that were ultimately considered and compared include: electric motor-driven barrel lifters and turners, manual lifting assist devices, and automated systems, all of which would be customized to the company’s preference of cleanability, ease of use, and size and power limitations addressed by Amgen

    ORS Responsive Manufacturing 6U Spacecraft

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    The Operationally Responsive Space Office is developing a small satellite capability and small satellite design specifically for advanced manufacturing and assembly methods for a semi-automated assembly and test facility. Designing a small satellite to be assembled and tested with this novel and innovative approach enables reduced costs, schedule, and risk. This presentation will discuss the implementation, unique design features, lessons learned, and challenges associated with developing for this new rapid-assembly capability as well as the unique benefits and challenges of assembly and test using automated, robotic systems. The presentation will also include discussions of the role that design-for-manufacturing, modular open system architecture, componentized subsystems, and standardized interfaces each play in developing the spacecraft. Assembly processes, ground support interfaces, and other assembly, integration and test needs will also be discussed

    Evaluation of Performance and Costs of Two Heifer Development Systems

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    Early weaned (EW) heifers must be developed for a longer period of time usually resulting in increased development costs. Developing EW heifers on native range may reduce these costs. Dried distillers grains plus solubles (DDGS) offers protein and energy that compliment native forages for developing heifers. The objective of this study was to evaluate the performance and costs of two heifer development systems in northwest South Dakota. Sixty-five nulliparous crossbred beef heifers were randomly allotted to one of two systems: 1) heifers (n=33) weaned at 132 d of age (461 lb) and developed on range with a DDGS supplement (1.8 to 6.4 lb/hd/d) from Sept. 25 to May 18 (Range); 2) heifers (n=32) weaned at 218 days of age (605 lb) and developed in a drylot with grass hay and a conventional supplement (2.6 to 3.6 lb/hd/d) from Dec. 2 to May 18 (Normal). Supplement levels were established to result in both groups of heifers reaching 65% of mature weight at breeding (863 lb). All heifers were managed similarly after May 18. Heifers were synchronized with a shot of PGF2α and bred natural service beginning June 14. As necessary for target weights to be reached, ADG through the feeding period was greater (P \u3c 0.05) for Range (1.68 lb/d) than (Normal 1.34 lb/d). Range heifers tended (P = 0.12) to be heavier on May 18 (859 and 830 lb, respectively) and were heavier (P \u3c 0.05) at breeding (915 and 834 lb, respectively). Weight differences in May were a result of higher than expected gains by the Range heifers in the spring. From May 18 to June 14, Range heifers gained more (P \u3c 0.05) than Normal (2.07 and 0.32 lb/d, respectively). Synchronized conception and overall pregnancy rates were similar (P \u3e 0.25) between the Range and Normal heifers (58% vs. 50% and 91% vs. 88%, respectively). Supplement and forage costs for the Range system was similar (122/hd)totheNormal(122/hd) to the Normal (117/hd). Range development provides an alternative method for developing early-weaned heifers that reduces daily costs

    Eyetracking-enhanced VEP for nystagmus

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    Visual evoked potentials (VEPs) are an important prognostic indicator of visual ability in patients with nystagmus. However, VEP testing requires stable fixation, which is impossible with nystagmus. Fixation instability reduces VEP amplitude, and VEP reliability is therefore low in this important patient group. We investigated whether VEP amplitude can be increased using an eye tracker by triggering acquisition only during slow periods of the waveform. Data were collected from 10 individuals with early-onset nystagmus. VEP was obtained under continuous (standard) acquisition, or triggered during periods of low eye velocity, as detected by an eye tracker. VEP amplitude was compared using Bonferroni corrected paired samples t-tests. VEP amplitude is significantly increased when triggered during low eye velocity (95% CI 1.42–6.83 µV, t(15) = 3.25, p = 0.0053). This study provides proof-of-concept that VEP amplitude (and therefore prognostic reliability) can be increased in patients with early onset nystagmus by connecting an eye tracker and triggering acquisition during periods of lower eye velocity

    bMagazine 2020

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    bMagazine is part annual report and part showcase of people thinking bigger and thinking differently about what's possible in communities across the Bush Foundation's region of Minnesota, North Dakota, South Dakota and the 23 Native nations that share that geography

    Be X-ray binaries in the SMC as indicators of mass transfer efficiency

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    Be X-ray binaries (BeXRBs) consist of rapidly rotating Be stars with neutron star companions accreting from the circumstellar emission disk. We compare the observed population of BeXRBs in the Small Magellanic Cloud with simulated populations of BeXRB-like systems produced with the COMPAS population synthesis code. We focus on the apparently higher minimal mass of Be stars in BeXRBs than in the Be population at large. Assuming that BeXRBs experienced only dynamically stable mass transfer, their mass distribution suggests that at least 30% of the mass donated by the progenitor of the neutron star is typically accreted by the B-star companion. We expect these results to affect predictions for the population of double compact object mergers. A convolution of the simulated BeXRB population with the star formation history of the Small Magellanic Cloud shows that the excess of BeXRBs is most likely explained by this galaxy's burst of star formation around 20--40 Myr ago
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