نتایج جستجو برای: trailers and semi

تعداد نتایج: 16847616  

Journal: :Transport Economics and Logistics 2019

2014
Ulrich Derigs Markus Pullmann

In this talk we introduce several new classes of rich vehicle routing problems which are motivated by a realworld problem arising in supply chain management. The problems are based on a specific 2-echelon distribution system where products come to the depot from different factories by semi-trailers and these semi-trailers are also used for short-haul distribution, i.e. the load from different f...

The aim of this paper is decomposition of total factor productivity (TFP) growth to four factors technological progress, technical efficiency, allocative efficiency, scale effects in 21 manufacturing industries, using a panel data technique, during 2000-2011.Findings show that the production elasticity related to labor and capital is o.57 and 0.13, respectively and economy of scale is less than...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

Journal: :Mechanical Engineering Journal 2023

Semi-trailers have the advantage that maximum load capacity is large. However, there are some problems high driving skill required because it necessary to perform unique steering during turning or backward driving. This paper proposes a path planning and tracking algorithm for autonomous parking of semi-trailers. The planner determines target position in accordance with given environment includ...

Journal: :SHS web of conferences 2021

The possibilities of creating cluster associations enterprises in the sub-branches Machine Building Industry Zaporizhzhia region by determining clustering potential are considered. engineering industry was assessed using localization coefficients, production per person and specialization industries. According to results assessment machine-building there such five sub-sectors were identified whi...

Journal: :Ingeniería, Investigación y Tecnología 2013

Douglas L. McWilliams

This paper considers the parcel hub scheduling problem (PHSP) with unequal batch size inbound trailers, which is a combinatorial optimization problem commonly found in a parcel consolidation terminal in the parcel delivery industry (PDI). The problem consists of processing a large number of inbound trailers at a much smaller number of unload docks. The parcels in the inbound trailers must be un...

Journal: :Engenharia Agricola 2022

Brazil is the world’s largest sugarcane producer destined for mills producing alcohol, sugar, and electricity cogeneration. Sugarcane transport to carried out by trucks with trailers tractors semi-trailers, which raw material harvested in field mill. The modal road system of uses this equipment meet continuous demand harveste draw material, punctuality execution generating a minimum cost. This ...

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