منابع مشابه
Use of the Improved Frog-Leaping Algorithm in Data Clustering
Clustering is one of the known techniques in the field of data mining where data with similar properties is within the set of categories. K-means algorithm is one the simplest clustering algorithms which have disadvantages sensitive to initial values of the clusters and converging to the local optimum. In recent years, several algorithms are provided based on evolutionary algorithms for cluster...
متن کاملNew records of trematode parasites (digenea) in the banded frog (Rana camerani) and marsh frog (Rana ridibunda ridibunda) (Anura: Ranidae), from southwest of Iran
Fourteen adult frogs including six banded frog, Rana camerani and eight marsh frog, Rana ridibunda ridibunda were collected from two sites of Chahar Mahal-o-Bakhtiari province at the southwest of Iran and then were examined for helminth parasites. Only Dolichosaccus rastellus (50%) was found in R. camerani, Skrjabinoeces similis (50%) and metacercarian cysts of Codonocephalus urniger (12....
متن کاملThe Frog Skin Potential
For many years the isolated surviving frog skin has been among the favorite objects of electrophysiologists and students of ion transport. This interest has turned out to be rather rewarding. Not only is the frog skin preparation interesting in its own rights, but there is mounting evidence that it can serve as a model system for the study of properties found in many epithelial and glandular ti...
متن کاملThe Boiled Frog Problem
an outstanding problem in knowledge management—a problem that human-centered computing can perhaps address. In all complex sociotechnical workplaces, including those in government and industry, knowledge and skill have become widely recognized as increasingly important assets. They are important because expertise is a " must " for proficient performance in these domains. Furthermore, this impor...
متن کاملFrog eat frog: exploring variables influencing anurophagy
Background. Frogs are generalist predators of a wide range of typically small prey items. But descriptions of dietary items regularly include other anurans, such that frogs are considered to be among the most important of anuran predators. However, the only existing hypothesis for the inclusion of anurans in the diet of post-metamorphic frogs postulates that it happens more often in bigger frog...
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ژورنال
عنوان ژورنال: Nature
سال: 1874
ISSN: 0028-0836,1476-4687
DOI: 10.1038/010520b0