نتایج جستجو برای: residual stand damage
تعداد نتایج: 350448 فیلتر نتایج به سال:
در این پایان نامه ابتدا روش های لانکسوز و روش های تکراری را مطرح می کنیم و سپس روش های گرادیان مزدوج و مانده مزدوج را با جهتهای جستجو مطرح کرده و تعمیم می دهیم روش های bi-conjugat gradiant و bi-conjugat residual را مطرح کرده و نتایج عددی حاصل را بیان کرده و نتیجه میگیریم که bi-conjugat residual بهتر از bi-conjugat gradiant می باشند.
A method for estimating risk ratios of wind damage for Pinus thunbergii trees and stands was developed based on stem bending theory and coefficients characterizing wind profiles (attenuation coefficients wtr, wst for single tree and stand respectively), distribution of branches (constant ac) and optical stratification porosity (OSP) (extinction coefficient ec). For individual trees, if acs equa...
The growth enhancing effects of forest fertilizer is considered to level off within 10 years of the application, and be restricted to one forest stand rotation. However, fertilizer induced changes in plant community composition has been shown to occur in the following stand rotation. To clarify whether effects of forest fertilization have residual long-term effects, extending into the next rota...
The negative influence of timber harvesting on the forest environment is reflected through damage to residual trees, regeneration, and soil. Considering that skidding, a popular extraction method, can cause substantial severe remaining stand, aim this research was determine trees during skidding by an LKT 81T cable skidder, including oxen bunching. conducted in eastern Bosnia Herzegovina, uneve...
In order to increase hemlock survivability in stands threatened by hemlock woolly adelgid (HWA), a new study is developing silvicultural thinning guidelines to reduce stand densities, reallocate resources, and increase hemlock vigor across a range of stand types and structures before HWA invasion. The 7 study areas are all geographically similar in that they regularly experience winter temperat...
ALLMAN MICHAL, ALLMANOVÁ ZUZANA, JANKOVSKÝ MARTIN, FERENČÍK MICHAL, MESSINGEROVÁ VALÉRIA. 2016. Damage of the Remaining Stands Caused by Various Types of Logging Technology. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 64(2): 379–385. Forest harvesting causes a lot of damage, which results in damage of the remaining stand. These damages have diff erent character. Thei...
The influence of electron and ion temperatures on charging damage during residual metal ~latent antenna! overetching in high-density plasmas is investigated by Monte Carlo simulations. The tunneling current through a thin gate oxide, electrically connected to the antenna, increases significantly with electron temperature, mainly as a result of changes in plasma current and ion energy distributi...
The purpose of this research was to determine how fluid volume changes in the residual limbs of people with transtibial amputation were affected by activity during test sessions with equal durations of resting, standing, and walking. Residual limb extracellular fluid volume was measured using biompedance analysis in 24 participants. Results showed that all subjects lost fluid volume during stan...
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