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1424 Uppsatser om Internal combustion engine - Sida 16 av 95
Modellering av en panna med rörlig rost :
The aim of this master thesis was to create a dynamic model for the processes in a solid fuel boiler of the moving grate type. Another aim with the model was to keep it as simple as possible but still able to catch the dynamics of the processes in the bedplate of the boiler. The creation of the model had its origin from drying and combustion equations used in earlier modeling work of boilers. The represented model has been used to simulate different kinds of disturbances in a boiler and different ways to control the boiler. These tests show that controlling a number of parameters in the bed of the boiler is an effective way to keep the grate stable during disturbances.
Modellering och reglering av ureainsprutning på kraftvärmeverket FTG
The aim of this thesis is to improve the control of urea injection at the combined power and heating plant Framtidens Gärstad (FTG). Tekniska Verken i Linköping AB is the owner of the plant.The FTG plant consists of a boiler where garbage combustion is done. From the combustion nitrogen oxides are emitted. These nitrogen oxides are hazardous to the environment. To reduce the nitrogen oxides, injection of urea into the boiler is used.
Lojalitetsskapande hos anställda på fristående hotell
The hotel sector has reviewed big changes, as higher requirements on independent hotels have been set. In order to be able to compete with big hotel chains, it is no longer sufficient to only use the 4P of marketing mix, it is also required a bigger focus on the personnel. Trained and service aimed employees are service companies' intangible assets and they become more important. Globalisation and internationalisation has however contributed to that the labor market has become more open, and employees easier can compare employment conditions or change job.The aim of this essay is to analyze and to evaluate conditions for the internal marketing at independent hotels, in order to be able to achieve employee loyalty. The essay builds on a comparison between managers' and employees' views about internal marketing.A qualitative hermeneutical study has been used in order to be able to analyze and evaluate conditions for the independent hotels' internal marketing.
Inomhuspositioneringssystem : Utvecklande av server-funktionalitet, klient-kommunikation och en grafikmotor
The projects goal was to make an already existing indoor positioning system useful forthe average smartphone user. This was achieved by creating an Android applicationwhich, along with a running server, continuously presents the user with all the currentneeded information. It uses the graphics engine andEngine to create the graphical userinterface. The application was created in the development environments Eclipse andAndroid Studio..
Utveckling och validering av en LC-MS/MS metod för kvantifiering av clopidogrel och dess metabolit i plasma
Clopidogrel is an antiplatelet substance that prevents blood coagulation in the arteries. It is an inactive pro drug that becomes activated after first-pass metabolism by the liver. The active metabolite of clopidogrel is 2-oxoclopidogrel, which is unstable therefore pharmacokinetic data is obtained by measuring the inactive metabolite clopidogrel acid in plasma. Clopidogrel is taken orally in tablet form. The aim of this project was to develop a LC-MS/MS method for quantification of clopidogrel and its metabolite in plasma. The method has been developed by optimizing the sample preparation.
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.
Mätning av partikelmassa i avgaser från en dieselmotor
This master thesis was a continuation of a previous study in the diesel exhaust characterization, which is part of the academical work embedded in the EMIR-1 project. The main objective of this thesis work was to finish the installation and make the proper modifications of the particulate mass measuring system located in one of the engine test cells at KTH, in order to be able to measure the mass of the particles from the exhaust of diesel engines.This experiment requires a diluted flow sample from the exhaust that should be sent to the device that makes possible the measurement of particle mass, called TEOM. In the first stage of this project, the objective was to study and make the proper modifications in the existing KTH diluter because there were several problems to obtain a constant dilution ratio from it during tests.This modifications were made and it resulted in a great improvement in the maximum inlet and outlet flow that this diluter can handle. Therefore another modification is proposed for controlling the inlet exhaust flow so it will be possible to regulate the dilution ratio and make it constant along a wide range of engine loads and speeds.The second and most important stage was to make particulate mass measurements possible by analyzing the frequency signal from the TEOM device. The idea was to obtain the frequency of oscillation from the tapered element in the TEOM, and therefore with the proper correlations, be able to predict the particulate mass concentration in the exhaust flow from the engine.An electrical problem in the TEOM circuit was detected and corrected, so the signal that carries the frequency from the TEOM can be analyzed properly.
Internrevision i svenska myndigheter : En studie utifrån de tre ansvarslinjerna
Syftet med denna uppsats är att beskriva och analysera svenska myndigheters internrevision för att kunna dra slutsatser om i vilken ansvarslinje de befinner sig i dagsläget samt att föra en diskussion kring internrevisionens oberoende. I denna uppsats har en kvalitativ studie genomförts. Med hjälp av semi-strukturerade intervjuer på sex olika myndigheter med krav på internrevision har empiri insamlats som tillsammans med teoretisk referensram ligger till grund för analys och slutsatser. Studien visar att svenska myndigheters internrevision befinner sig i den tredje ansvarslinjen. Vissa variationer inom den tredje ansvarslinjen kan urskiljas på grund av dels otydliga riktlinjer för internrevisorerna för att kunna bibehålla ett oberoende i samband med råd och stöd och dels på grund av bristfälliga kunskaper i den andra ansvarslinjen avseende hur ansvaret ska fördelas. .
Arbetsmotivation i äldreomsorgen: en explorativ studie av uppfattningar hos medarbetare och chef vid ett äldreboende
An explorative study on the work motivation of employees at a retirement home. The three main factors are internal motivation, external motivation and control. A comparison between how important they estimate the different factors to be and how they experience them today reveals which factor is their key motivator and which areas that need improvement. Results indicat that internal and external motivation are slightly more important than control. And the amount of perceived control reflects the amount of creative and initiative behaviour of the individual.
Globalt Ansvar : socialt ansvar eller organisatoriskt hyckleri?
Background: Ambiguity and confusion of ideas within the area of social responsibility have led to that companies not really know how to work with these types of questions. One way for companies to deal with their social responsibility is to affiliate to an initiative that exists and through this show their standpoint. One of these is Globalt Ansvar, a Swedish governmental initiative that is based on Global Compact?s principles and the guidelines of OECD. What does it mean for the companies when showing their point of view? Is this a way to gain legitimacy?Purpose: The purpose with the thesis is to judge if organisations? work with Corporate Social Responsibility gains more legitimacy by affiliating to Globalt Ansvar.Research method: A survey made through telephone interviews with representatives from all of the fifteen Swedish companies which today are affiliated to Globalt Ansvar.Conclusions: In order to give the affiliated companies more legitimacy, Globalt Ansvar has to be a legitimate initiative.
Must I move to be with my family? The right to family reunification in EU law and the problem of reverse discrimination
The Court of Justice of the European Union has progressively revised the rule of purely internal situations to ensure a wider scope of application of the economic freedoms as well as the EU citizenship right to move and reside freely within the Union. This development, combined with the increasing importance of fundamental rights, has strengthened the family life protection of those EU citizens who come within the scope of EU law. The limit between the individuals who may benefit from a EU right to family reunification and fundamental rights protection and those who find themselves in purely internal situations has, however, become more legally uncertain. The disadvantage suffered by those who fall outside the scope of EU law is known as reverse discrimination.The 2011 case Zambrano confirmed the trend towards an increasingly generous EU law protection of family life in cases where the exercise of freedom of movement and enjoyment of EU citizenship rights is potentially restricted by a Member State measure. By contrast, in the subsequent McCarthy- case, it became clear that families in purely internal situations may only rely on national immigration and procedural law to obtain family reunification and protection of their fundamental rights.
Lantbruksföretagets utveckling av ny verksamhet : en studie av fem lantbruksföretag
The structural rationalization of rural firms in Sweden has led to many new creative ways of developing companies. The agriculture sector is characterized by the need of capital in form of buildings, labor and inventory. The rationalization process has led to free capacity in rural firms when new technology make buildings and inventory not longer necessary for the production process. To get a better cost coverage this free capacity can be used to start-up new business areas that help the rural firm to growth.The study aims to identify factors that motives entrepreneurs in rural firms to develop new business areas. The purpose is also to analyze driving forces that lies behind development of rural firms and the forces that support or not support development in rural firms.The study is built upon five cases that all can be categorized as firms with different size and orientation.
Ethanol for Scania's Future - A Scenario Based Analysis
Abstract Title: Ethanol for Scania?s future ? A scenario based analysis Authors: Anna Hansson and Julia Persson Tutors: Annette Cerne ? Department of Business Administration, Lund University Jonas Holmborn ? Head of Advanced Combustion, Engine Development, Scania Lennart Thörnqvist ? Department of Energy Sciences, Faculty of Engineering, Lund University Problem: Oil-based products are the dominating fuels in the transport sector but alternative fuels are currently challenging the world-wide dominance. The large number of alternative fuels that are under development at present makes the future fuel-market impossible to predict. Scania?s ethanol project is associated with a number of uncertainty factors that are beyond the company?s control.
EFFEKTIVISERING AV INTERN MATERIALHANTERING
Considering that the current technology is constantly improving, it becomes increasingly important to have an efficient logistics in a company to maintain profitability while achieving a competitive business. Efficient logistics may be accomplished by improving the internal materials handling. In this thesis the internal material handling of steel frames has been studied at a factory in Vaggeryd. The goal of this study is to investigate the problems that exist with the current production flow of products and provide suggestions on how it can be developed to reduce unnecessary handling and movement.The study has a deductive approach where the authors has been using literature studies parallel with empirical analyzes conducted at a company to achieve the purpose of the study. Documentation from the company and interviews with staff and observations form the basis for the data collection carried out.
Sökmotorsoptimering ? Från nyckelord till relevant innehåll : Fem företags SEO-praktik i förändring
I all teori om sökmotorsoptimering finns det många olika tankar om hur man ska sökmotorsoptimera. De flesta berättar mest om den tekniska biten och har endast som en kort punkt förklarat att innehållet på en webbplats också är viktigt. Syftet med uppsatsen är att undersöka webbföretags förhållningssätt till både hur de arbetar och resonerar kring sökmotorsoptimering och webbstatistik, men även gå djupare in på hur förhållandet mellan kund och företag påverkar vart marknaden är på väg. Genom att utföra kvalitativa intervjuer med webbföretag där främst marknaden för sökmotorsoptimering, sponsrade länkar och webbstatistik diskuterats har ett resultat utformats.Baserat på de senaste artiklarna, respondenternas svar och mina egna personliga reflektioner av situationen, visar det att det blivit en förskjutning i vad definitionen av sökmotorsoptimering är. Den tekniska biten är kvar men inte alls lika viktig längre då sökmotorerna hela tiden ändrar sina algoritmer och blir smartare, utan fokus läggs istället mer på innehållet.