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'Six Degrees of Kevin Bacon' game provides clue to efficiency of complex networks
'Six Degrees of Kevin Bacon' game provides clue to efficiency of complex networks
'Six Degrees of Kevin Bacon' game provides clue to efficiency of complex networks
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(University of California - San Diego) As the global population continues to grow exponentially, our social connections to one another remain relatively small, as if we're all protagonists in the Kevin Bacon game inspired by "Six Degrees of Separation," a Broadway play and Hollywood feature that were popular in the 1990s.
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Other Articles:
| • | Influence of Cracking on Rice Seasons and Irrigation in Bangladesh |
| Winter dry season is mainly depends on irrigation. Because, the rainfall in this season is almost zero. At the end of this season, ground water mainly remains at about 10-12 meter depth. On the other hand, the crop then remains at booting to flowering stages. During this period, a huge number of cracks developed on the puddled field due to shortage of water. Consequently, the size and number of cracks depend on the irrigation interval, the intensity and duration of drought spell. The sizes of the cracks are range about 10-30 mm wide. Normally, the major cracks goes below puddled layer of 70-100 mm and almost all the cracks are interlinked and remain active through the growing season. Therefore, a major portion of the irrigation water lost through this cracks. Hence, a large area remains fallow due to proper management and shortage of irrigation water. Therefore, irrigation application efficiency to be increased in cracking soils by reducing seepage and drainage losses in paddies. As a result, it is important to develop irrigation scheduling of rice for cracking soils on the basis of crack size rather than estimating crop water requirements based on evapotranspiration (ET) demand. | |
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| • | Analysis of novel geometry-independent method for dialysis access pressure-flow monitoring |
| Background: End-stage renal disease (ESRD) confers a large health-care burden for the United States, and the morbidity associated with vascular access failure has stimulated research into detection of vascular access stenosis and low flow prior to thrombosis. We present data investigating the possibility of using differential pressure ([Delta]P) monitoring to estimate access flow for dialysis access monitoring, with the goal of utilizing micro-electro-mechanical systems (MEMS) pressure sensors integrated within the shaft of dialysis needles. Methods: Data derived experimentally in our lab evaluating pressure-flow relationships and using computational fluid dynamics (CFD) were used to devise and test a method of estimating access flow using [Delta]P and variable dialysis pump speeds (variable flow) that diminishes dependence on geometric factors and fluid characteristics. Results: CFD modeling suggested turbulent needle effects are greatest within 1 cm of the needle tip. Utilizing linear, quadratic and combined variable flow algorithms, dialysis access flow was estimated using geometry-independent models and an experimental dialysis system with the pressure sensors separated from the dialysis needle tip by distances ranging from 1 to 5 cm. Real-time [Delta]P waveform data were also observed during the mock dialysis treatment, which may be useful in detecting low or reversed flow within the access. Conclusions: With further experimentation and needle design, this geometry-independent approach may prove to be a useful access flow monitoring method. | |
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| • | University of Washington: Assistant Professor |
| Assistant Professor, University of Washington, Seattle, WA 98195-7940. Posted on 25 July 2007. | |
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| • | [LETTERS] Technetium Tc99m Tetrofosmin Single-Photon Emission CT for the Assessment of Glioma Proliferation |
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| • | mirakeloptical.com - Mirakel Optical Company Inc. |
| 2007, binocular, binoculars, catalog, different, durability, fully, inspect , item, ll, receive, reject sure, request, service, suppliers, telescopes, unsatisfactory reject, year | |
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| • | Microscope-Stereo |
| Welcome to WordPress. This is your first post. Edit or delete it, then start blogging! | |
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EurekAlert! - Policy and Ethics
By editor@_DOMAIN - Copyright 2008 by the American Association for the Advancement of Science - version: v1.5 build A
By editor@_DOMAIN - Copyright 2008 by the American Association for the Advancement of Science - version: v1.5 build A