scholarly journals Estimation of terrestrial albedo via BRDF model considering terrain effect

2019 ◽  
Vol 58 (1) ◽  
pp. 14-23
Author(s):  
Junichi SUSAKI ◽  
Ryota MIYAGAKI ◽  
Amane KURIKI ◽  
Sheng-ye JIN
Keyword(s):  
Terrain Effect

Driveline Configuration and Terrain Effect on Slippage and Efficiency of a 6×6/6×4 Truck

2013 ◽  
Author(s):  
Vladimir V. Vantsevich ◽  
Dennis Murphy ◽  
Gianantonio Bortolin ◽  
Blair Farley ◽  
Gabriel Judd
Keyword(s):  
Energy Efficiency ◽  
Analytical Method ◽  
Power Distribution ◽  
Operating Conditions ◽  
Surface Type ◽  
Vehicle Efficiency ◽  
Terrain Effect ◽  
Truck Transportation

The power distribution between driving wheels has been shown to have a significant impact on vehicle energy efficiency, but there has only been limited research in this area. As shown in this paper, the wheel power distribution is largely dependent on the power dividing units (PDUs) which split/vector power between the driving wheels. The performance of a particular driveline system will also depend largely on the terrain conditions the vehicle encounters. This paper presents an analysis of PDU configurations in 6×6/6×4 terrain trucks. The vehicle efficiency is evaluated in a wide variety of typical operating conditions including varying surface types, speeds and accelerations, and slope conditions. An analytical method is presented which can be used to determine the tire circumferential forces and slippages. Finally, an analysis of the effects of the driveline configuration, terrain, and surface type on truck transportation efficiency is presented for three PDU combinations.

scholarly journals Mobility evaluation of wheeled robots on soft terrain: Effect of internal force distribution

2016 ◽  
Vol 100 ◽  
pp. 259-282 ◽  
Author(s):  
Bahareh Ghotbi ◽  
Francisco González ◽  
József Kövecses ◽  
Jorge Angeles
Keyword(s):  
Internal Force ◽  
Force Distribution ◽  
Wheeled Robots ◽  
Terrain Effect

The terrain effect on terrestrial heat flow

1980 ◽  
Vol 85 (B9) ◽  
pp. 4757 ◽  
Author(s):  
David D. Blackwell ◽  
John L. Steele ◽  
Charles A. Brott
Keyword(s):  
Heat Flow ◽  
Terrestrial Heat Flow ◽  
Terrain Effect

TERRAIN CORRECTIONS FOR AN INCLINED PLANE IN GRAVITY COMPUTATIONS

Geophysics ◽  
1958 ◽  
Vol 23 (4) ◽  
pp. 701-711 ◽  
Author(s):  
C. H. Sandberg
Keyword(s):  
Inclined Plane ◽  
Gravity Station ◽  
Terrain Effect ◽  
Terrain Corrections ◽  
Inclined Planes

In many instances an inclined‐plane approximation represents more accurately the terrain near a gravity station than does the conventional block‐cylinder approximation. Combinations of the terrain effect of inclined planes through various terrain zones, as represented in the accompanying tables, can be used to approximate easily and quickly such familiar land forms as valleys, ridges, and hillsides.

scholarly journals Optimal Wind Turbines Micrositing in Onshore Wind Farms Using Fuzzy Genetic Algorithm

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Jun Yang ◽  
Rui Zhang ◽  
Qiuye Sun ◽  
Huaguang Zhang
Keyword(s):  
Genetic Algorithm ◽  
Wind Power ◽  
Wind Turbines ◽  
Power Plants ◽  
Wind Farms ◽  
Economic Benefits ◽  
Wind Power Plants ◽  
Fuzzy Genetic Algorithm ◽  
Terrain Effect ◽  
Fuzzy Genetic

With the fast growth in the number and size of installed wind farms (WFs) around the world, optimal wind turbines (WTs) micrositing has become a challenge from both technological and mathematical points of view. An appropriate layout of wind turbines is crucial to obtain adequate performance with respect to the development and operation of the wind power plant during its life span. This work presents a fuzzy genetic algorithm (FGA) for maximizing the economic profitability of the project. The algorithm considers a new WF model including several important factors to the design of the layout. The model consists of wake loss, terrain effect, and economic benefits, which can be calculated by locations of wind turbines. The results demonstrate that the algorithm performs better than genetic algorithm, in terms of maximum values of net annual value of wind power plants and computational burden.

REDUCTION OF MAGNETIC AND GRAVITY DATA ON AN ARBITRARY SURFACE ACQUIRED IN A REGION OF HIGH TOPOGRAPHIC RELIEF

Geophysics ◽  
1977 ◽  
Vol 42 (7) ◽  
pp. 1411-1430 ◽  
Author(s):  
B. K. Bhattacharyya ◽  
K. C. Chan
Keyword(s):  
Magnetic Field ◽  
Integral Equation ◽  
Gravity Data ◽  
Analytical Relationship ◽  
Surface Distribution ◽  
Anomalous Field ◽  
Terrain Effect ◽  
Gravity Map ◽  
Finite Extent ◽  
Topographic Relief

The problem of reduction of magnetic and gravity data, when observed on an arbitrary surface in a region of high topographic relief, is studied with equivalent source representation at the points of observation. It is shown that the analytical relationship between the total magnetic field or the gravity effect and equivalent magnetization or density on an arbitrary observational surface is given by a Fredholm integral equation of the second kind. A rapidly convergent iterative scheme is described for the solution of the integral equation, yielding the surface distribution of magnetization or density. With this distribution, the field at any other surface can be easily computed. Then it has been demonstrated with model examples that the gravity or magnetic field observed on a rough terrain can be accurately reduced to a horizontal plane for processing and interpretation. A new method has been suggested for minimization of terrain‐induced anomalies on a magnetic or gravity map. This method is based on the concept that when the anomalous field observed on an arbitrary surface is continued to a surface parallel to the topography, the terrain effect in the continued field is sharply reduced relative to the field created by bodies of finite extent in the crust. Model examples are presented to show the accuracy and reliability of the method.

Terrain Effect on Impact Cratering

2020 ◽  
Vol 54 (2) ◽  
pp. 167-173
Author(s):  
V. V. Shuvalov
Keyword(s):  
Impact Cratering ◽  
Terrain Effect
Sign in / Sign up

Export Citation Format

Share Document