Sök:

Sökresultat:

771 Uppsatser om Driving Forces - Sida 40 av 52

Beräkning av värmeförluster och energieffektivisering av elbussar

The ?civilized? world is in need of fossil fuel in order to function. Hybricon AB is a company in Umeå that is developing a technology that hopefully can reduce parts of this need. They are currently testing their two electrical busses (with Hybrid backup) in city traffic on the roads of Umeå in cooperation with the county of Umeå.                               The busses are originally diesel-busses, but the diesel motor has been replaced with two electrical hub-motors with a power of 145 kW each that are powered by batteries.The batteries are charged at the end station after each route. In case the batteries should run low on capacity during driving, they can be recharged by the so called genset.

Riktlinjer för studier av icke-existerande komplexa sociotekniska system : Erfarenheter från en studie av införandet av ombordbaserad helikopter på korvett av Visbyklass

This report consists of a discussion about suitable methods for studying complex sociotechnical systems that are still being developed. There are large economical advantages with studying new systems before they are completely developed since problems can be discovered early and thereby avoided. It is, however, difficult to study developing systems, there are methodological limitations. These limitations are discussed and recommendations for studying non-existing complex sociotechnical systems are presented.The report is based on experiences from a study of the introduction of a shipboard helicopter on the corvettes that the Swedish Armed Forces are developing. A shipboard helicopter implies high requirements on the hosting ship.

Att främja delaktighet : Attityder och förutsättningar bland chefer med personalansvar i en militär organisation

Delaktighet är grundläggande för främjandet av folkhälsa. Inom arbetslivet kan delaktighet främjas genom ledarskap, till exempel använder Försvarsmakten utvecklande ledarskap för att främja hälsa genom chefer. Arnsteins delaktighetsstege visar på nivåer av delaktighet i ett hierarkiskt system och kan användas för att mäta delaktighet. Attityder kan påverka hur människor handlar och kan påverkas av mängden krav och resurser inom arbetslivet.Syftet med studien är att undersöka attityder till delaktighet inom det egna ledarskapet, i vilken grad det finns förutsättningar att bedriva ett ledarskap som främjar delaktighet samt om det finns ett samband däremellan, hos chefer med personalansvar i en militär organisation. Enkäten har skickats ut till samtliga 135 chefer med personalansvar på ett regemente i Sverige.

Svenska Lantchips : Och deras internationaliseringsprocess

Svenska Lantchips is a Swedish SME sized snack manufacturer. Being a small, medium sized, family-owned business with branches throughout the world, they make an interesting company for a case study. The case study I have conducted focuses on the internationalisation process of this family owned company ? how they, despite their size, find ways to keep up an unique business structure, designed for internationalisation.The aim of this essay is to compare Svenska Lantchips? internationalisation process with traditional internationalisation theories and see if these are compatible with this company. The theories used are The Uppsala Model, The Network Model, and The Born Global Theory, with The Born Global Theory representing the younger generation of models.After undertaking an in-depth interview with Michael Hansen, business developer at Svenska Lantchips, I collated a substantial amount of material, which I have used as the basis of this essay.

Ersättningsmodeller för ballasttransporter : vid anläggning och underhåll av skogsbilvägar

Construction and maintenance of forest truck roads are a necessary element of industrial forestry. Payment for contracting services in this context can be done according to a number of payment models. This study will focus on the methods and consequences associated with a change of Holmen Skog?s payment model from per hour to per metric ton for ballast hauling. The aim of this study is to improve the economic efficiency of Holmen Skog?s ballast hauling in construction and maintenance of forest truck roads. This is done by formulating and evaluating a proposal for a payment model based on crowns per ton.

Battle of the Produce

Thesis Purpose: The purpose of our thesis is to explore different plausible scenarios concerning the future of the Swedish produce industry with regards to branding. Methodology: In order for us to answer the research question and fulfill its purpose, we have utilized a qualitative approach combined with of both an inductive and deductive theoretical approach. Our study is both explorative and speculative. Theoretical Perspective: The theoretical framework of our research is based upon Porters Five Forces and Competitive Advantage combined with Kapferers Brand Identity Prism and his ideas on Brand Innovation. Additionally, we have utilized the Game Theory.

Ett vidgat textbegrepp i praktiken : Fem lärare om undervisning utifrån ett vidgat textbegrepp

AbstractThis study deals with Swedish upper secondary school teachers' approaches to an expanded text concept. Attitudes mediated through media as well as ?the new languages? that media give rise to, imply new conditions for the activities in school. As a necessary adaptation to the new conditions given by the media forces, the Swedish upper secondary school 1994 incorporated ?an expanded text concept? in the syllabus for the Swedish language.The focus of the study is how Swedish upper secondary school teachers' work to meet and challenge the students' in an expanded text concept.

Vibrationsdämpning av värmepump

Thermia Värme AB is one of the market leading manufactures of heat pumps. In order tomaintain this position, the company wants to improve the vibration characteristics of theirproducts. The aim of this thesis is to develop product design changes that lead to a reductionof vibrations in the heat pump Thermia Diplomat 8.The main cause for vibrations in the system is flow pulsation and mechanical forces inducedby the scroll compressor. Vibration is transmitted through the compressor piping and receivedby the heat exchangers, from where it is further transmitted to the connection points for theradiator and heat source circuits.A number of design changes in order to improve the vibration characteristics have beenevaluated through calculations and practical experiments. The changes have included thecompressor and heat exchanger mountings, the compressor suction and discharge line pipingand also pulsation dampening.The results of the experiments show that the vibration levels in the connections for the heatingand brine circuits can be decreased strikingly through changes in suction and discharge linepiping.

Katolska kyrkans roll i skräckfilm En rollteoretisk analys av Katolska kyrkan i filmerna Exorcisten och Ritualen.

My problem comes out of the bigger question ?why the Catholic church is featured in horror films whenever a religious organization is in one?? I have detected in the horror films that I've seen that when a religious organization is in a horror movie it's the Catholic church that gets to act as church and religion. I have chosen the following problem: How is the Catholic church presented in the horror movies The Exorcist and The Rite, and how can one understand these presentations from a role theoretic perspective?Since role theory has it's background in the world of the theater with it's actors and roles, it came naturally to use role theory, and specifically Goffmans dramatic model. I've used this model in a film analysis of the movies.

Definition av stötdämpares fyllnadsgrad

Shock absorber units play a key role in establishing the driving dynamics and performance of automobiles. Öhlins Racing has manufactured high-tech automotive shock absorbers for over 30 years. Öhlins Racing?s advanced technology has contributed to over 200 world championships in automobile racing. Öhlin?s manufacturing process has long utilized automated fluid filling equipment during the final shock absorber unit assembly stage. The filling process consists of vacuum pumping the shock absorber unit and subsequent transfer of fluid. Vacuum pumping is necessary to remove residual air from the shock absorber unit prior to initiating the liquid filling stage. The presence of undesirable gases drastically compromises the performance of a shock absorber. The filling degree, defined as the final ratio of air to oil, is determined by the specific filling protocol as well as the specific equipment utilized.The current investigation aims to develop a viable technique to accurately determine residual air content in shock absorber units. If the filling degree can be appropriately quantified for a specific manufacturing process, then the air/oil ratio may be quantitatively related to shock absorber performance. The utilized measurement method must be completely integrated into the manufacturing process to guarantee shock absorber performance specifications according to the manufacturer?s standards. By utilizing the measurement method developed in this work, the manufacturing process, manufacturing equipment and product specifications can all be tailored to provide improved filling conditions.The developed measurement method provides accurate quantification of the filling degree under a wide range of processing conditions. The method establishes the relative quantity of air in the shock absorber unit by performing in-situ compressibility tests. The fill ratio can be controlled and varied by manipulating the vacuum pressure exerted during the filling process. Performance tests, however, indicate no correlation between filling degree and unit performance..

Hur publicera efter policyn? Ett antal seniora forskares förhållningssätt till open access efter Vetenskapsrådets open access-policy.

Since the 1990?s Open Access has developed into an alternative model for scientific publication. Today an increasing political interest in promoting Open Access is commonly channeled through the implementation of policies by research funders. However, in the scientific community the uptake and acceptance of the model has been of notably different character.This Master?s thesis examines the understanding of and attitudes towards open access among eight senior Swedish researchers and how these have been affected by the implementation of the Swedish Research Council?s Open Access-policy as implemented in 2010.

Konstruktion av steghållare till brandbilar

High demands are set on all equipment used in emergency service work, where small margins can be the distinguishing factor between life and death during a rescue operation. It is important that tools such as ladders quickly and easily can be dismounted from a vehicle and still satisfy the regulatory requirements for securing loads during transport. The existing solution for getting ladders down from the roof of a fire engine requires a large manual effort from the user in an ergonomically unsound posture.In this degree project a new ladder holder is developed with focus on the user to solve the ergonomic problems and at the same time create a more compact design that can be adapted to several different types of ladders. After an initial pre-study with user-interviews and measurement of forces and distances a set of requirements was formulated that came to govern the project's direction. Creative methods were used to generate concepts that improved the function and through design solutions, calculations and testing in CAD a base for manufacturing of a new product was created.The result is a completely new type of ladder holder that minimizes the user's manual effort and simplifies the securing of ladders in the holder.

Vitvarueffektivisering med hjälp av värmelagring : Simuleringsstudie kring energiförsörjning av vitvaror med hjälp av värmepump & ackumulatortank

The constant need of energy is something that affects us all no matter our current situation. Whether we are driving our car to work, taking the elevator or using the oven to cook dinner we end up relying on energy. Our whole society is continuously striving to achieve a higher grade of efficiency and the process of supplying ourselves with energy is no exception. The importance of appliances in our everyday life cannot be exaggerated and thus the importance of their high efficiency.Efficiency is already a keyword in the appliance industry with labels, stars and numbers helping us choosing the most suitable option for the task ahead. No matter how efficient appliances often use pure electricity as their energy source.

Innovativt Drivpaket för Rullstol

This is a thesis for a Bachelor Degree Project, performed in the subject MechanicalEngineering. The students Roger Malmberg and Simon Hagberg have carried out adesign project on behalf of the recently established company J&D Assisting systems,located in Halmstad.The project consisted in developing J&D's first prototype of a power assisting solutionfor wheelchairs. A power assisted wheelchair combines human power, which is deliveredby the arms through the pushrims, with electrical motors, which are powered by a battery.The power assisted wheelchair is aimed at customers, who have used a regularwheelchair for a long time, but who have become weaker or just need additional powerwhen driving uphill. This kind of wheelchair will provide additional power for users,which will spare their wrists, elbow and shoulders. The product is torque sensor free andinstead it relies on the velocity.

Träning, svett och solsken : en studie om resenärens motiv till att välja en träningsresa

A new type of chartered holiday, fitness holiday, has evolved during the last years and has also been mentioned in different media channels. Despite this, fitness holiday is a relatively new and unexplored phenomenon, which caught our interest to further explore this. The desire to travel on a holiday of this type has also increased. Therefore, a study about this particular phenomenon with focus on the traveler?s motives behind the choice to go has been done.It?s a qualitative study and most part of the data has been collected during a field study to Playitas Resort, Canary Islands.

<- Föregående sida 40 Nästa sida ->