نتایج جستجو برای: topographic factors

تعداد نتایج: 1090566  

Journal: :iJAC 2008
John Sandler

Development of meaningful elearning materials has become critical for many organisations in the corporate space, particularly those whose workforce is spread over huge geographical areas. Perhaps even located in different countries, and/or different campuses. The Next GTM network is providing rural and regional customers with their first-ever taste of broadband connectivity. The Next GTM networ...

Understanding ecological processes is a prerequisite for the management of rangelands; therefore, recognition of the relationship between environmental factors and vegetation is very important. The present research aims to investigate environmental and management factors affecting rangeland vegetation distribution in Saral rangelands of Kurdistan province, Iran, in 2017. Sampling was done...

Extended abstract 1- Introduction Gully erosion is one of the most important sources of sediment in the watersheds and a common phenomenon in semi-arid climate that affects vast areas with different morphological, soil and climatic conditions. This type of erosion is very dangerous due to the transfer of fertile soil horizons, and the reduction of water holding capacity also is a factor for s...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2002
Soumya Iyengar Sarah W Bottjer

The initial establishment of topographic mapping within developing neural circuits is thought to be shaped by innate mechanisms and is primarily independent of experience. Additional refinement within topographic maps leads to precise matching between presynaptic and postsynaptic neurons and is thought to depend on experiential factors during specific sensitive periods in the animal's developme...

2009
P. M. Rich W. A. Hetrick

The solar radiation intercepted at a given location on the earth's surface is influenced by surface orientation and sky obstruction by surrounding topographic features. Viewshed models can be used to calculate sky obstruction for any given location on or above a complex topographic surface. We have developed an algorithm for rapid calculation of intercepted solar radiation using a combination o...

2013
Zhi Li WenZhao Liu FenLi Zheng

A series of soil conservation measures have been carried out to reduce soil loss on the Loess Plateau of China since 1950s, and the biologic measures were implemented according to topographic factors such as slope and elevation; therefore, the changes in topographic factors of land use can indicate the effects of the biologic measures. The objectives of this study were to (i) analyze the land u...

2010
Rafael Núñez Rachel I. Mayberry Pamela Witcher Eileen R. Cardillo Jennifer Aydelott Victor S. Ferreira Pia Knoeferle Mayada Elsabbagh

The Yupno of Papua New Guinea make extensive use of topographic terms—such as uphill and downhill—for conceptualizing spatial relations (Wassmann, 1994). Given the ubiquity of topographic distinctions in everyday Yupno language, an interesting question is whether such contrasts are also used when topographic landmarks are not available, such as within traditional houses. Yupno houses have flat,...

2007
Bunkei Matsushita Wei Yang Jin Chen Yuyichi Onda Guoyu Qiu

Vegetation indices play an important role in monitoring variations in vegetation.The Enhanced Vegetation Index (EVI) proposed by the MODIS Land Discipline Groupand the Normalized Difference Vegetation Index (NDVI) are both global-based vegetationindices aimed at providing consistent spatial and temporal information regarding globalvegetation. However, many environmental factors such as atmosphe...

2015
Jungmok You Vijay Krishna Raghunathan Kyung Jin Son Dipali Patel Amranul Haque Christopher J Murphy Alexander Revzin

Hepatocytes, the main epithelial cell type in the liver, perform most of the biochemical functions of the liver. Thus, maintenance of a primary hepatocyte phenotype is crucial for investigations of in vitro drug metabolism, toxicity, and development of bioartificial liver constructs. Here, we report the impact of topographic cues alone and in combination with soluble signals provided by encapsu...

2015
Lijuan Zhao Wenhua Xiang Jiaxiang Li Pifeng Lei Xiangwen Deng Changhui Peng Eric J. Jokela

Evergreen broadleaved forests in subtropical China contain a complicated structure of diverse species. The impact of topographic and soil factors on the assembly of woody species in the forest has been poorly understood. We used Ripley’s K(t) function to analyze the spatial patterns and associations of dominant species and residual analysis (RDA) to quantify the contribution of topography and s...

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