نتایج جستجو برای: bees algorithm

تعداد نتایج: 763219  

2013
Hisatomo Taki Isamu Okochi Kimiko Okabe Takenari Inoue Hideaki Goto Takeshi Matsumura Shun'ichi Makino

In many temperate terrestrial forest ecosystems, both natural human disturbances drive the reestablishment of forests. Succession in plant communities, in addition to reforestation following the creation of open sites through harvesting or natural disturbances, can affect forest faunal assemblages. Wild bees perform an important ecosystem function in human-altered and natural or seminatural eco...

2015
James C. Fleming Daniel R. Schmehl James D. Ellis James C. Nieh

Western honey bee (Apis mellifera L.) populations face declines commonly attributed to pesticide, pathogen, and parasite stress. One way beekeepers combat these stressors is by providing supplemental protein diets to honey bee colonies to ensure adequate colony nutrition. However Nosema spp., a microsporidian parasite of the honey bee, is thought to be associated closely with a colony's nutriti...

2016
Adam G. Dolezal Stephen D. Hendrix Nicole A. Scavo Jimena Carrillo-Tripp Mary A. Harris M. Joseph Wheelock Matthew E. O’Neal Amy L. Toth

Evidence of inter-species pathogen transmission from managed to wild bees has sparked concern that emerging diseases could be causing or exacerbating wild bee declines. While some pathogens, like RNA viruses, have been found in pollen and wild bees, the threat these viruses pose to wild bees is largely unknown. Here, we tested 169 bees, representing 4 families and 8 genera, for five common hone...

Journal: :journal of medical signals and sensors 0
abdoljalil addeh ata ebrahimzadeh

breast cancer is the second largest cause of cancer deaths among women. at the same time, it is also among the most curable cancer types if it can be diagnosed early. this paper presents a novel hybrid intelligent method for recognition of breast cancer tumors. the proposed method includes three main modules: the feature extraction module, the classifier module and the optimization module. in t...

Journal: :Appl. Soft Comput. 2011
Anan Banharnsakun Tiranee Achalakul Booncharoen Sirinaovakul

The Artificial Bee Colony (ABC) algorithm is inspired by the behavior of honey bees. The algorithm is one of the Swarm Intelligence algorithms explored in recent literature. ABC is an optimization technique, which is used in finding the best solution from all feasible solutions. However, ABC can sometimes be slow to converge. In order to improve the algorithm performance, we present a modified ...

Journal: :Applied Mathematics and Computation 2007
Mohammad Fathian Babak Amiri Ali Maroosi

Cluster analysis is one of attractive data mining technique that use in many fields. One popular class of data clustering algorithms is the center based clustering algorithm. K-means used as a popular clustering method due to its simplicity and high speed in clustering large datasets. However, K-means has two shortcomings: dependency on the initial state and convergence to local optima and glob...

2012
Michael L. Smith

Nosema ceranae, a newly introduced parasite of the honey bee, Apis mellifera, is contributing to worldwide colony losses. Other Nosema species, such as N. apis, tend to be associated with increased defecation and spread via a fecal-oral pathway, but because N. ceranae does not induce defecation, it may instead be spread via an oral-oral pathway. Cages that separated older infected bees from you...

Journal: :The Journal of experimental biology 2013
Jordan R Kemfort William F Towne

Honeybees learn the spatial relationship between the sun's pattern of movement and the landscape immediately surrounding their nest, which allows bees to locate the sun under overcast skies by reference to the landscape alone. Surprisingly, when bees have been transplanted from their natal landscape to a rotated twin landscape - such as from one treeline to a similar but differently oriented tr...

Journal: :Journal of invertebrate pathology 2014
Jorgen Ravoet Lina De Smet Ivan Meeus Guy Smagghe Tom Wenseleers Dirk C de Graaf

Solitary bees and honey bees from a neighbouring apiary were screened for a broad set of putative pathogens including protists, fungi, spiroplasmas and viruses. Most sampled bees appeared to be infected with multiple parasites. Interestingly, viruses exclusively known from honey bees such as Apis mellifera Filamentous Virus and Varroa destructor Macula-like Virus were also discovered in solitar...

2013
A. Mirzakhani Nafchi A. Moradi

Many real-world search and optimization problems involve inequality and/or equality constraints and are thus posed as constrained optimization problems. In trying to solve constrained optimization problems using classical optimization methods, this paper presents a Multi-Objective Bees Algorithm (MOBA) for solving the multi-objective optimal of mechanical engineering problems design. In the pre...

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