نتایج جستجو برای: ecohydrological parameters

تعداد نتایج: 578950  

2013
Jongmin Kim Duc Long Luong Wansoo Nah SoYoung Kim JONGMIN KIM

An efficient measurement methodology is proposed to construct the scattering parameters of a multi-port device using a four-port vector network analyzer (VNA) without the external un-terminated ports. By using the four-port VNA, the reflected waves from the un-terminated ports could be minimized. The proposed method significantly enhances the accuracy of the S-parameters with less number of mea...

Journal: :SIAM J. Math. Analysis 2010
Guillaume Bal Alexandre Jollivet

This paper concerns the reconstruction of the absorption and scattering parameters in a time-dependent linear transport equation from full knowledge of the albedo operator at the boundary of a bounded domain of interest. We present optimal stability results on the reconstruction of the absorption and scattering parameters for a given error in the measured albedo operator.

2006
Brent D. Newman Bradford P. Wilcox Steven R. Archer David D. Breshears Clifford N. Dahm Christopher J. Duffy Nate G. McDowell Fred M. Phillips Bridget R. Scanlon Enrique R. Vivoni

[1] Water-limited environments occupy about half of the Earth’s land surface and contain some of the fastest growing population centers in the world. Scarcity or variable distributions of water and nutrients make these environments highly sensitive to change. Given the importance of water-limited environments and the impacts of increasing demands on water supplies and other natural resources, t...

2016
Gustaf Granath Paul A. Moore Maxwell C. Lukenbach James M. Waddington

Northern peatlands can emit large amounts of carbon and harmful smoke pollution during a wildfire. Of particular concern are drained and mined peatlands, where management practices destabilize an array of ecohydrological feedbacks, moss traits and peat properties that moderate water and carbon losses in natural peatlands. Our results demonstrate that drained and mined peatlands in Canada and no...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2008
J G Tundisi T Matsumura-Tundisi J E M Tundisi

As in many other continents, neotropical ecosystems are impacted by the construction of reservoirs. These artificial ecosystems change considerably the natural terrestrial and aquatic ecosystems and their biodiversity. The multiple uses of reservoirs promote benefits for the human beings in terms of economic development, income, jobs and employment. Services of reservoirs are important assets f...

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