Sahand Negahban, Department of EECS, Massachusetts Institute of Technology, Cambridge MA 02139 (e-mail: [email protected]). Pradeep Ravikumar, Department of CS, University of Texas, Austin, Austin, TX 78701 (e-mail: [email protected]). Martin J. Wainwright, Department of EECS and Statistics, University of California Berkeley, Berkeley CA 94720 (e-mail: [email protected]). Bin Yu, De...

Ecological Role of Altitude on Quantitative Characteristics Caucasian Oak (Quercus macranthera Fisch. & C.A.Mey. ex Hohen.) Stands in Arasbaran Forest

Arasbaran is one of the most important protected regions in Iran located in NW of the country and east of E Azarbaijan Province. Several reports have been published on the mycobiota of this region however there is only few records about rust fungi of Arasbaran. Our research on rust fungi of Arasbaran region get started since 2006. During this study, several rust taxa collected and identified fr...

Ecological Relationships of Slope and Elevation with Rowan (Sorbus aucuparia L.) in Arasbaran Forests

abstract a mountain glacier, when it occupies a river valley, immediately begins to change the cross-section and profile of that valley. river valleys in mountain areas tends to have v-shaped profiles. glaciers work to widen as well as deepen their valleys and the typical cross-section of a glacial valley is u-shaped. the u-shaped glacial valley is one of the most characteristic of glacial land...

this research has been carried out with the aim of the determination of the land-use changes of the forests in the protected area of arasbaran. the determination of the changing points and the factors influencing these changes by the use of gis and remote sensing are the main aims of this research. accordingly, the satellite pictures pertaining to the years 1987 and 2005 along with other necess...

sahand volcanic-sub-volcanic dome, along with several other magmatic domes in northwest iran and the southern part of tabriz fault show adakitic geochemical characteristics. sahand dome has mainly dacitic composition. the sio2 content and mg number of sahand dome range from 64 to 73 wt% and 27 to 57 respectively. sahand dome can be classified as high silica adakitic (hsa) type. the rocks studie...

Sahand Arasteh* Author Affiliations Department of Materials Engineering, Science and Research Branch, Islamic Azad University, Iran Received: August 05, 2022 | Published: 11, Corresponding author: Arasteh, Tehran, DOI: 10.26717/BJSTR.2022.45.007235

This article proposes a new formulation for the maximum leaf spanning tree problem (MLSTP) using network flow concepts to ensure graph connectivity of problem’s solutions. Since MLSTP is NP hard, genetic algorithm (MGA) also developed solve large-scale instances. The proposed optimally solved 37 out 41 instances existing benchmarks, comparable with results available formulations in literature. ...