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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
101

A make vs buy truck logistics decision for grain companies

Irsik, Matthew January 1900 (has links)
Master of Agribusiness / Department of Agricultural Economics / Keith D. Harris / Grain companies in the United States face many different challenges operating in a mature industry with a rich history in agriculture. The purpose of this thesis project is to examine a solution for a grain companies operating in a geographical region with considerable competition. By focusing on differentiation in level of services offered to customers, grain companies can become more profitable. The results of this study offer a solution, which centers on supply chain logistics. The objective of this project is to examine the make vs buy decision for operating a truck and trailer for grain transportation. Determining the decision factors that influence which method is the most optimal and to provide a method of relating the costs associated with each choice. In order to make an economic decision, a Truck Cost Calculator will be created to best reflect the most realistic cost structure for owning and operating a truck and trailer in house during an average crop year for a facility in Pratt County, KS. Other decision factors that are non-economic that provide a strategic benefit to a business will also be part of the project. Using industry data and relevant variables for the cost calculator, the end result is that operating choosing to operate truck logistics in house is the most cost effective option in the make vs buy decision. The optimal choice will differ individually between businesses when a strategic approach is taken to assess whether or not logistics is a core competency in the supply chain.
102

Ekonomické, provozní a ekologické porovnání nákladních vozidel Scania využívajících různá paliva / Economical, operational and environmental comparison of Scania trucks using different types of fuels

Turek, Lukáš January 2014 (has links)
This master work deals with different fuels for trucks Scania and it is divided into theoretical and practical parts. The theoretical part describes the basic concepts related to the topic. The most important are associated with transport and transportation, categorization and types of vehicles, greening road transport or financing. Depending on the practical part it is also place great emphasis on selected types of fuels, their production and also their advantages and disadvantages. In the practical part is introduced Scania company and the products and services that the company offers. Furthermore, this section generally analyzes Scania offer of engines for different types of fuels, including technical recommendations. At the end of the practical part are described specific vehicles, which are compared from financial aspect, in terms of environmental impact and operational limitations. The aim of the study is to compare Scania trucks using diesel, biodiesel and CNG.
103

Návrh sledování repase vysokozdvižných vozíků / Proposal for Monitoring Lifttrucks Refurbishment Process

Nitschneider, Richard January 2018 (has links)
The project elaborated proposal of comprehensive monitoring of the forklift reconditioning process at the regional refurbishment center for central and east Europe. The proposal aims to increase overall customer satisfaction. The choice of the specific form of monitoring was based on theoretical background and process analysis. Monitoring of process activities is carried out on the basis of barcodes and scanning devices, which are able to distinguish the date and specific time. The proposal results are an overall customer overview increase within process, customer satisfaction increase and support improvement of managing and decision making.
104

Design vysokozdvižného vozíku / Design of fork-lift truck

Vaňková, Jana January 2009 (has links)
This diploma thesis deals with design features of a customs swivel cabin fork-lift truck. Concept is adapted to the technical and ergonomic requirements and the main goal of this concept is to provide original design with a view to the future. The complex concept meets the operational, technical and ergonomic demands of such engines. The project is focused on the design concept and complex contour-composition of the swivel cabin fork-lift truck. Designed of the fork-lift truck stems from the modern technological methods and the construction is ready for production and everyday operating usage, hence the production of this project would be rather expensive for the local market. However, it might be possible to start the production of this fork-lift truck, equipped by various functional components, sometime in the future and such extra functional components will be included as basic accessories of any fork-lift truck.
105

Energy Performance Simulations of a Scania Truck Cabin

Axenholm Strömberg, Niklas, Verde, Leo January 2020 (has links)
The vast majority of trucks in the European Union are reliant on fossil fuels as their primary mode of propulsion. In efforts to decarbonise the truck transport sector manufacturers are developing electrified trucks. An electrification may serve to reduce the tailpipe emissions of trucks, but it introduces a new challenge to supply the cabin with energy. This energy is primarily used to maintain a comfortable cabin climate for the driver and passenger. In order to maximise the range of an electric truck the cabin energy requirement needs to be minimised. This thesis evaluates the current energy performance of a Scania S20H cabin through experimental testing as well as simulations using the simulation software GT-SUITE. Based on the results from the tests and the models, energy saving concepts were generated and their performance was evaluated. The experimental tests were performed on a truck in a climate chamber where the ambient temperatures, HVAC system fan speeds, air recirculation rate and inlet air temperatures were varied. The test data was used to build a one-dimensional simulation model in GT-ISE as well as a three-dimensional model in GT-TAITherm. The one-dimensional model was calibrated against 10 experimental tests and yielded an average relative error for the chosen temperature calibration parameters between 0.05% and 0.43%. The one-dimensional model showed that the largest energy loss was through air evacuation and air leakage, accounting for 70-90% of the input energy. The structural energy losses were primarily through the windshield and the side windows, accounting for 32% and 23% of the total structural losses respectively. Energy saving concepts in the form of low emissivity window glazing, double pane windows, xenon filled gas panel insulation and low levels of air recirculation were simulated. The best and most plausible combination of the aforementioned concepts yielded an average input energy decrease of 31.6%, air loss decrease of 32.9% and a structural loss decrease of 27.6% compared to the simulated base cases. The three-dimensional model was calibrated against one test case and yielded an average relative error of 0.15% for the chosen temperature calibration parameter. One energy saving concept in the form of double pane side windows in conjunction with low emissivity glazing on all windows was simulated. This concept had a slight impact in raising the average cabin air temperature and the interior surface temperatures of the windows. The surface temperature change resulted in a decrease of cold downdraught from the top roof window and the driver side window. In conclusion, the models work as intended providing a time efficient way of evaluating the energy performance of structural changes. In order to improve the performance, usefulness and accuracy of the models the initial values should be more exact. This can be achieved by standardised testing procedures as well as data collection with wind speed.
106

Energy Performance Simulations of a Scania Truck Cabin

Verde, Leo, Axenholm Strömberg, Niklas January 2020 (has links)
The vast majority of trucks in the European Union are reliant on fossil fuels as their primary mode of propulsion. In efforts to decarbonise the truck transport sector manufacturers are developing electrified trucks. An electrification may serve to reduce the tailpipe emissions of trucks, but it introduces a new challenge to supply the cabin with energy. This energy is primarily used to maintain a comfortable cabin climate for the driver and passenger. In order to maximise the range of an electric truck the cabin energy requirement needs to be minimised. This thesis evaluates the current energy performance of a Scania S20H cabin through experimental testing as well as simulations using the simulation software GT-SUITE. Based on the results from the tests and the models, energy saving concepts were generated and their performance was evaluated. The experimental tests were performed on a truck in a climate chamber where the ambient temperatures, HVAC system fan speeds, air recirculation rate and inlet air temperatures were varied. The test data was used to build a one-dimensional simulation model in GT-ISE as well as a three-dimensional model in GT-TAITherm. The one-dimensional model was calibrated against 10 experimental tests and yielded an average relative error for the chosen temperature calibration parameters between 0.05% and 0.43%. The one-dimensional model showed that the largest energy loss was through air evacuation and air leakage, accounting for 70-90% of the input energy. The structural energy losses were primarily through the windshield and the side windows, accounting for 32% and 23% of the total structural losses respectively. Energy saving concepts in the form of low emissivity window glazing, double pane windows, xenon filled gas panel insulation and low levels of air recirculation were simulated. The best and most plausible combination of the aforementioned concepts yielded an average input energy decrease of 31.6%, air loss decrease of 32.9% and a structural loss decrease of 27.6% compared to the simulated base cases. The three-dimensional model was calibrated against one test case and yielded an average relative error of 0.15% for the chosen temperature calibration parameter. One energy saving concept in the form of double pane side windows in conjunction with low emissivity glazing on all windows was simulated. This concept had a slight impact in raising the average cabin air temperature and the interior surface temperatures of the windows. The surface temperature change resulted in a decrease of cold downdraught from the top roof window and the driver side window. In conclusion, the models work as intended providing a time efficient way of evaluating the energy performance of structural changes. In order to improve the performance, usefulness and accuracy of the models the initial values should be more exact. This can be achieved by standardised testing procedures as well as data collection with wind speed.
107

Bindemedel i ledningsnät / Binder in Cable Harness

RUGLAND TIMGREN, BEATRICE January 2015 (has links)
Det här projektet har utförts på Scania och är en förstudie till en standardbeskrivning där olika bindemedel i ledningsnät studerats för att kunna användas i olika miljöer i lastbilen så som hytt chassi och drivlina. Olika krav som temperatur, kemikaliebeständighet och fuktresistans ställs för de olika miljöerna. Bindemedlet ska hålla kablarna på plast i en skyddsslang och samtidigt fungera som tätning. De limtyper som har studerats i den här rapporten är ett epoxilim, ett epoxy-cyanoacrylate hybrid lim, ett smältlim av polyamid och två siliconlim. De har limmats på några av de platser som används i lastbilen och sedan utsatts för dragtester, kemikalietester, åldring- och klimattest. Inget av de testade limmerna klarade alla testerna men den limgrupp som klarade testen bäst var de av silicon. / This project has been performed at Scania and it is a pre-study for a standard description of binders in cables harness in different environments in the truck. The different environmental zones are the cab, chassis and power train. Different zones in the truck have different requirements such as temperature, chemicals and moister resistance. The function of the binder is to glue cables into a protective hose of plastic and also act as a seal. The different types of adhesives that have been study in this report is epoxy adhesive, epoxy-hybrid cyanoacrylate adhesive, hot melt by polyamide and two types of silicon glue. They have been glued to some of the different plastics that the cables are made of in the truck and then they have been exposed to tensile tests, chemical tests, aging and climate tests. None of the tested adhesives passed all the tests, but silicon glue passed most of the tests.
108

Improvement of attention times and efficiency of container movements in a port terminal using a truck appointment system, LIFO management and Poka Yoke

Sermeño, Luis, Orellana, Jimmy, Eyzaguirre, Juan, Raymundo, Carlos 01 January 2020 (has links)
El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado. / In the management of port terminals, a common problem has been evidenced, high traffic of trucks and long waiting times given the variability of trucks arrival. This is a significant challenge for ports. This situation has given the opportunity to investigate in this matter and make use of a Truck Appointment System (TAS) together with other tools corresponding to industrial engineering for the optimization of truck service processes within a port terminal in Peru. To do this, a diagnosis is made of the company object of study and through a simulation of discrete systems, the technical viability of the proposal is validated. It was demonstrated that a procedure of attention based on appointments, Last in, First Out (LIFO) management for containers and development of visual management within the container yard; it is a highly viable option to shorten waiting times and unproductive movements of containers.
109

Manipulační vozík / Handling truck

Houšť, Pavel January 2013 (has links)
The thesis desribes handling specifications heavy with brake drums. Shows the improper movements of workers who manipulate the loads, which are frequent a source of accident. Shows the and describes possible ways of construction solutions handling truck. In conclusion the work is in progress one solution including drawings and check calculation.
110

How to manage the barriers for a transition toward electromobility in the truck manufacturing industry : A study of the Southeast Asia region

Lindström, Caroline, Storckenfeldt, Carl January 2023 (has links)
Purpose – The purpose of this study is to enhance the understanding about the barriers to electrifying the truck industry in Southeast Asia. It is also to identify the main barriers of the electrification of the truck market in Southeast Asia and how they can be managed.  Method – The study uses an exploratory single-case study approach, the research relied on the collection of qualitative data from semi-structured interviews conducted with 18 participants. The data collected was analyzed with an abductive analysis approach by using a thematic analysis where codes, sub-themes and themes were identified.  Findings – The findings of the study were mainly that there is a need to work with public affairs to get the government to invest in ‘charging infrastructure’ and get financial support such as subsidies or carbon taxes. The organizations in the industry must also collaborate to create a driving force to make the transition possible by sharing knowledge and investing in new technology. We also concluded that there is a need to create awareness about the importance of sustainability and why electric trucks are a needed product. There is also a need to spread knowledge about the product itself to reduce the ‘operational reliability’ that exists among the people in the markets.  Research limitation/implications - The case study was a single case study and was conducted on a specific truck manufacturing company and its stakeholders in a particular region. This may have limited the study, as the challenges may vary for different companies. The study contributes to the electrification of trucks and challenges of sustainable innovations literature with enhanced knowledge about how to manage the barriers to enable the transition to electric trucks in Southeast Asia. It also provides barrier management guidance for truck manufacturing companies that operate in the region.    Originality/value - The study contributes an increased understanding of the barriers to the electrification of trucks in Southeast Asia and how they can be managed to speed up the transition.

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