Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 48 for “"hauling"”.
-
Optimizing underground, trackless loading and hauling systems
<p>"Determining the optimum system and equipment to be utilized in today's underground trackless haulage mine is a complex problem which was dealt with in this research by systems simulation. The computer program developed by the Caterpillar Tractor Company served as the starting point for …
-
Cost of hauling express and freight by electric locomotives
Made available in DSpace on 2017-11-30T22:46:18Z (GMT). No. of bitstreams: 2 5965136.pdf: 1530564 bytes, checksum: 46c9efcaca61e407f3476a3c29375e57 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1906
-
Decreasing the cost of hauling timber through increased payload
The potential for decreasing timber transportation costs in the South by increasing truck payloads was investigated using a combination of theoretical and case-study methods. A survey of transportation regulations in the South found considerable disparities between states. Attempts to model the …
-
A Solution for Commodity Field Hauling with Self-Unloading Semi-Trailers
<p>Commodity hauling of bulk goods is a growing enterprise that has expanded from hauling agricultural products to hauling many other bulk products. Commodity trailers are used to haul agricultural products from storage facilities to processing plants. These trailers are designed for highway use …
-
Application of STPA-Sec for analyzing cybersecurity of autonomous mining systems
… on introducing autonomy in the industry through hauling. Various stages of hauling process including the interaction with manually operated MOS and shovel were studied.
-
The Design, Construction and Analysis of a Large Round Bale Handling Implement
… purchase equipment that will improve their hay hauling operation, a more cost effective and more universal solution must be developed. The objectives of this project are to develop and test a prototype large round bale handler. The prototype was built to industry standards, using modern …
-
Evaluation of asphalt pavements construction practice in West Virginia
… several opportunities for improvement in the hauling, placement and compaction of the asphalt concrete. Observations from summer 2013 showed plant operations remained "good", the performance of hauling, surface preparation, placement and compaction of the asphalt concrete were better than …
-
Analysis of the baling concept for increased fiber recovery on harvested forest sites
… of baling the superior materials handling and hauling characteristics of baled material were disclosed. The uniform dimensions and high bulk densities of bales contribute to excellent loading, reloading and hauling capacities. Bales are also highly compatible with existing modes of …
-
Development of mechanistic rolling resistance model for pavement life cycle assessment
… service life. Based on the multi-parameter hauling model developed in the study, considering the effect of the hauling truck driving cycle may increase the contribution of hauling by up to 4% in the life cycle global warming potential (GWP). A mechanistic multi-degree-of-freedom …
-
Applications of Queuing Theory for Open-Pit Truck/Shovel Haulage Systems
… consist of four main components: loading, loaded hauling, dumping, and unloaded hauling to return to the loader. These components can be modeled together as servers in one cyclic queuing network, or independently as individual service channels. Data from a large open pit gold mine are analyzed and …
-
GIS and the dairy industry: examining the roles of government regulation and dairy cooperatives in the shipment of fluid milk
… dairy cooperatives. GIS is used to evaluate milk hauling efficiencies on both local and regional scales. The case study focuses on Rockingham and Augusta counties in northwestern Virginia and the surrounding hinterland. On the local scale GIS network functions are used to determine optima] routes …
-
A Case Study: Engineering Techniques, Incorporated
… real estate commissions, and a small amount of hauling work.
-
Documentation of Productivity and Efficiency Relationships for a Group of Southern Logging Contractors
… labor, overhead and insurance and contract hauling - into outputs - tons of wood delivered to the mill. While the firms exhibited a wide range of efficiency, average annual efficiency of all firms combined seemed to be relatively stable for the time period. Firms delivered between 20,000 and …
-
The distribution and objectives of local forestry-related ordinances in the United States
… in local highway aid, changes in timber hauling methods and state environmental programs have all contributed to the growth of local forest laws. The objectives of forest ordinances differ dramatically. Ordinances in the northeastern states are usually developed to protect local …
-
Market power and transportation price formation: Theory and an application to the captive shipper problem
… duopolist carriers under incomplete cross-hauling. Measures developed from the market equilibrium conditions identify whether mill, uniform or discriminatory transportation pricing is the dominant type of price information. Other measures are derived which allow us to differentiate between …
-
Influences of varying stand harvest methods on timber harvesting costs in southwestern Virginia hardwoods
… costs had a mean of $2252 per week. Mean hauling cost was $1289 per week. Annual production averaged 6778 cords. Cords per man hour was 0.99. Total cost per cord including hauling averaged $26. The information taken from the interviews was incorporated along with data from current …
-
A timber supply model and analysis for southwest Virginia
… of logs and bolts available. Harvesting and hauling costs depend on a response cell's physiographic characteristics. Stumpage owners set reservation price as a function of expected stumpage prices, future timber yields, and an alternative rate of return. Recovery cost per unit in a response …
-
Competitiveness of Virginia dairy producers in a national setting given changing marketing and policy conditions
… Transportation costs are determined with current hauling rates and actual mileage between supply and demand points. Once the costs of production and spatial components of the NDM are formulated, the NDM is solved using the General Algebraic Modeling System (GAMS). The NDM is evaluated under the …
-
Investigating waste management programs in school foodservice operations
… that the school district paid for waste hauling without billing the child nutrition program; however 18% paid a standard percent allocation (indirect cost). Cardboard, paper and plastic bottles/containers were the most frequently recycled materials. Most respondents had positive attitudes …
-
Study of truck allocation and truck dispatching problems in open pit mines
… costs. Given the fact that loading and hauling operations account for up to 60 % of the total costs in surface mining, the optimization and control of these operations can provide substantial reductions in the costs. Assignment of truck to shovels has been traditionally performed by …
Page 1 of 3