نتایج جستجو برای: improved box hive
تعداد نتایج: 529761 فیلتر نتایج به سال:
Starting with Knutson and Tao’s hive model [KT99], we characterize the Littlewood– Richardson coefficient c λ,μ of given partitions λ, μ, ν ∈ N as the number of capacity achieving hive flows on the honeycomb graph. Based on this, we design a polynomial time algorithm for deciding c λ,μ > 0. This algorithm is easy to state and takes O (
The success of ornithological studies often hinges on a researcher’s ability to capture individuals quickly and efficiently. Sometimes it is necessary to capture the same individual multiple times, as is the case in many metabolic, ecotoxicological, and immunocompetence studies. Several methods of capturing cavity-nesting birds at their nest boxes have been described. However, these methods pro...
In a study replicated across two states and two years, we tested the sublethal effects on honey bees of the miticides Apistan (tau fluvalinate) and Check Mite+ (coumaphos) and the wood preservative copper naphthenate applied at label rates in field conditions. A continuous covariate, a colony Varroa mite index, helped us disambiguate the effects of the chemicals on bees while adjusting for a pr...
The paper describes the application of Hadoop modules: MapReduce, Pig and Hive, for processing and analyzing large amounts of tabular data acquired from a computer simulation of heat transfer in bio tissues. The Apache Hadoop is an open source environment for storing and analyzing BigData. It was installed on a cluster of six computing nodes, each with four cores. The implemented MapReduce job ...
A critical but seldom-studied component of life history theory is how behavior and age affect whole-organism performance. To address this issue we compared the flight performance of honey bees (whose behavioral development and age can be assessed independently via simple manipulations of colony demographics) between distinct behavioral castes (in-hive nurse bees vs out-of-hive foragers) and acr...
By using harmonic radar, we report the complete flight paths of displaced bees. Test bees forage at a feeder or are recruited by a waggle dance indicating the feeder. The flights are recorded after the bees are captured when leaving the hive or the feeder and are released at an unexpected release site. A sequence of behavioral routines become apparent: (i) initial straight flights in which they...
The neuroimmune events leading to human immunodeficiency virus (HIV)-1-associated dementia (HAD) are linked to macrophage secretory neurotoxins (cellular and viral toxins). To study such events, we developed a murine model of HIV-1 encephalitis (HIVE), the pathological equivalent of HAD. Severe combined immunodeficient (SCID) mice injected with HIV-1-infected monocyte-derived macrophages (MDMs)...
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