نتایج جستجو برای: turanian region

تعداد نتایج: 538050  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم ریاضی 1388

روشهای عددی مانند روش هم محلی، گالرکین و تربیع برای حل معادلات انتگرالی فردهلم در نهایت به حل یک دستگاه معادلات خطی یا غیر خطی جبری منجر می شوند که حل این دستگاهها اغلب از نظر زمانی و دقت در محاسبه جواب با مشکل مواجه می شوند. در این رساله روش هایی ترکیبی را بر مبنای الگوریتم ابتکاری الکترومغناطیس و روش gmres را برای غلبه بر این قبیل از مشکلات در حل این دستگاه معادلات ارائه نموده ایم. الگوریتم...

Journal: :Raumforschung und Raumordnung 2000

Journal: Desert 2017
H.R. Karimzadeh J. Pourrezaei M. Tarkesh Esfahani M.R. Vahabi S.J. Khajeddin V. Mozaffarian

     Roads have an important role in plants dispersal on different scales. Various plant species settle on roadsides, but some of them can enter the natural environments and threaten their biodiversity. Worldwide knowledge of roadside flora is necessary for local and global management of natural areas. Accordingly, the roadside flora of Northern Khorasan rangelands was studied along the 600 km ...

Journal: رستنیها 2017

The increasing rate of irreversible damages to natural habitats has reinforced the need for gathering biodiversity fundamental data to conservation. Priority setting is the most important step in protection programs. Solanaceae as the the one of important economic families of eudicots distributed throughout North and South America, Europe, Africa, Asia, Australia, and the South Pacific. Up to n...

2016
Alena Janda Anthony Bowen Neil S. Greenspan Arturo Casadevall

The adaptive humoral immune response is responsible for the generation of antimicrobial proteins known as immunoglobulin molecules or antibodies. Immunoglobulins provide a defense system against pathogenic microbes and toxins by targeting them for removal and/or destruction. Historically, antibodies have been thought to be composed of distinct structural domains known as the variable and consta...

2010
Max J. Egenhofer

This paper revisits conceptual neighborhood graphs for the topological relations between two regions, in order to bridge from the A-B-C neighborhoods defined for interval relations in R to region relations in R and on the sphere S. A categorization of deformation types—built from same and different positions, orientations, sizes, and shapes—gives rise to four different neighborhood graphs. They...

Journal: :Journal of Weed Science and Technology 1986

Journal: :Zemletriaseniia Severnoi Evrazii [Earthquakes in Northern Eurasia] 2019

2009
Emilia Apostolova Dina Demner-Fushman

Detailed image annotation necessary for reliable image retrieval involves not only annotating the image as a single artifact, but also annotating specific objects or regions within the image. Such detailed annotation is a costly endeavor and the available annotated image data are quite limited. This paper explores the feasibility of using image captions from scientific journals for the purpose ...

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