نتایج جستجو برای: skidding operations

تعداد نتایج: 136293  

Journal: :Resources and Technology 2019

Journal: :International journal of occupational safety and ergonomics : JOSE 2001
C Hubbard S A Naqvi M Capra

This paper examines various control locations in heavy mining vehicles. Three trucks have been tested on a skid pad in both clockwise and anticlockwise directions. The skid lengths were measured after each trial. The primary focus of the study was the positioning of various controls and their relevance to various skid lengths. Some additional measures such as NASA-TLX scales were also used to m...

Journal: :Croatian Journal of Forest Engineering 2021

Soil physical and chemical properties can be seriously affected by forest operations. There is a knowledge gap on this topic for oak ecosystems, which play significant role in the context of multiple-use forestry. The main objective study was to analyse floor topsoil changes (0–10 cm) two years after application small-scale thinning (50% reduction basal area) clear-cut operations using mules ca...

Journal: :محیط شناسی 0
فرزام توانکار دانشگاه آزاد اسلامی، واحد خلخال، استادیار علوم جنگل امیر اسلام بنیاد دانشکدة منابع طبیعی دانشگاه گیلان، صومعه سرا ، دانشیار علوم جنگل باریس مجنونیان دانشکدة منابع طبیعی دانشگاه تهران، استاد مهندسی جنگل

selection cutting using skidding system often causes physical damage to residual stand through felling and skidding resulting decline of bole quality and tree value. this research evaluated logging damage using skidding system on residual trees and stand regeneration in uneven aged hardwood forest of asalem, were selection cutting was practiced. in this regard, systematic sampling method was us...

2012
Steve Levine

In this paper, I explore the application of various random sampling based algorithms to dynamic models of bicycles. Starting with relatively simple 3-dimensional state space models of bicycle and working up to a more realistic 7dimensional model that incorporates skidding, I examine RRT, RG-RRT, RRT*, and LQR-RRT*.

Journal: :Croatian Journal of Forest Engineering 2022

Skidding in peat swamp plantation forest requires high skill and alertness, particularly relation to damage, which includes subsidence as such a damage. The objective of this research is analyze the effect skidding operator’s on productivity, cost forest. method comprised operation conducted by two different operators with working experience, followed measuring average productivity cost, elevat...

2009
Dariusz Pazderski

This paper presents kinematic control problem of In this paper we propose to treat SSMR a as system skid-steering mobile robot using practical smooth and timesubjected to non ideal nonintegrable constraint. Next, we varying stabilizer. The stability result is proved using Lyapunov formulate kinematic control law based on tunable oscillator analysis and takes into account both input signal satur...

Journal: :Avtomatizaciâ i modelirovanie v proektirovanii i upravlenii 2022

Techniques of prevention locomotive wheelsets skidding were analyzed. The relevance using object modeling techniques to automate the design devices prevent is shown. main task solution which devoted article synthesis model technical solutions such devices, calculation and compilation matrices measures for inclusion, intersection similarity. As a result modeling, closest (prototype) was chosen, ...

اسلام بنیاد, امیر, توانکار, فرزام, مجنونیان, باریس,

Forest future depends on forest stands regeneration. Soil is one of the principal capitals in the forest area. It is important to minimize damages to the forest ecosystem during logging operation. In forestry and forest management, it is significant to know the effect of forest logging damages on regeneration, sapling and soil compaction. This study was carried out in Asalem Beech forest area, ...

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