نتایج جستجو برای: clearing of trees

تعداد نتایج: 21171959  

2009
Sébastien Lahaie

The problem of market clearing in an economy is that of finding prices such that supply meets demand. In this work, we propose a kernel method to compute nonlinear clearing prices for instances where linear prices do not suffice. We first present a procedure that, given a sample of values and costs for a set of bundles, implicitly computes nonlinear clearing prices by solving an appropriately f...

Leila Eftekhar, Mandana Naseri, Nastaran Bagheri, Zohreh Ahangari,

Background and Aim: Knowledge about the root canal system variations is crucial for successful endodontic treatment. This study aimed to examine the applicability of cone-beam computed tomography (CBCT) as a substitute for the gold-standard tooth clearing technique in identification of internal anatomical variations of mandibular incisors. Materials and Methods: This in-vitro study evaluated 6...

Dead trees protection, has a key role in structural and biogeochemical processes in forest ecosystems. Some aspects of dead tree dynamics have been carefully studied, but the kind and decay degree of dead trees and forest soil properties have not received enough attention. The aim of this research was to study the effect of a kind and decay degree of dead trees on soil mineral properties in the...

2003
Carlos Alós-Ferrer Georg Kirchsteiger

This paper analyzes the question of whether traders learn to coordinate on a trading institution that guarantees market clearing, or whether other market institutions can survive in the long run. While we find that the market clearing institution is indeed always stable under a general class of learning dynamics, it turns out that also other, non-market clearing institutions are stable. Hence, ...

2003
Carlos Alós-Ferrer Georg Kirchsteiger

This paper analyzes the question whether traders learn to coordinate on a trading institution that guarantees market clearing, or whether other market institutions can survive in the long run. While we find that the market clearing institution is indeed always stable under a general class of learning dynamics, it turns out that also other, non-market clearing institutions are stable. Hence, in ...

Journal: :Croatian Journal of Forest Engineering 2022

The encroachment of Eastern redcedar (ERC) (Juniperus virginiana L.) onto Great Plains prairies has become a serious threat to ecosystem functioning and grazing productivity. uncontrolled spread this invasive tree species been called »green glacier« converting grasslands into closed canopy woodlands. A pasture cutting robot was developed using tracked Autonomous Ground Vehicle (AGV) equipped wi...

Journal: :Stochastic Processes and their Applications 1974

Journal: :Nature Methods 2020

Journal: :جنگل و فرآورده های چوب 0
سمیرا ساسانی فر دانشگاه ارومیه منوچهر نمیرانیان دانشگاه تهران نصرت الله ضرغام دانشگاه تهران

knowing and conducting studies on size characters of trees is essential for assessing the tree volumeand/or other statistical parameters and also forest management. the characteristics of 529 treesincluding diameter at breast height (dbh) and total height were measured in an even-aged fraxinusstand for two periods from 2005 to 2012 in chelir district, a part of experimental kheyrud forest.resul...

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