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2182 Uppsatser om Hydropower reservoirs; dam safety; erosion protection; waves; simulation; MIKE 21 Spectral Wave - Sida 13 av 146
Personsäkerhet vid väderskyddsbyggande : En kartläggning över dagsläget och problematiken med frånvaron av föreskrifter i branschen
This paper, Personal safety when working with weather encapsulation constructions, is focused on weather encapsulation constructions and how the absence of Swedish standards and regulations is affecting the safety for the workers. The usage of weather encapsulation construction is increasing in Sweden therefore the needs for standards and regulations are becoming more and more urgent. The risks involving the rising and the demolition of the weather encapsulation construction and when the construction is transported along its rails are treated in the paper. Since there are no regulations companies have had to solve the safety issues without instructions, the paper regards how the companies have solved this problem without the support of formal institutions..
Jämförelse av olika reglersystem för undervisningsändamål
Examensarbetet syftar till att jämföra nya alternativ till olika system för användning i laborationer i reglerteknikkurser för olika studentkategorier. Det skall utredas vilket av ett antal alternativ till mjukvaruplattformar som är bäst lämpat att användas vid reglerteknikundervisningen i ITN:s reglerlaboratorium vid Linköpings universitet. Tidigare laborationer i berörda kurser skall även modifieras så att dessa kan genomföras i de nya systemen.Examensarbetet resulterade i en rad modifierade laborationer och system att tillämpa i dessa. De nya systemen medför att all reglering sköts direkt från en dator istället för tidigare variant med externa apparater som programmeras. På så sätt kan större fokus läggas på regleringen i sig och inte de system som tillämpas för att utföra den..
Varmhållen och kyld skolmat : En jämförelse med fokus på energianvändning mot bakgrund av livsmedelssäkerhet och näringsretention
The aim of this report has been to investigate the use of electricity energy before and after a conversion of foodservice. The ambition was also to highlight the food safety and the retention of nutrients in relation to the conversion. The methods being used were qualitative interviews, case studies, study visits and literature. The equipment and the use of energy was the same in 2008 as in 2011 for hot-holding of the tested component, sauce with ham. The chilled system used more than three times the energy and cost for one portion than one portion in the hot-hold system.
Trådlösa nätverk
This report describes what wireless local area networks are and the use and configuration of them. These WLAN as they also are called can be used both in new installations and expansion of existing networks. Further on this report reveals security in this area. Security is incredible important in all networks not at least wireless because you don?t have to be in the environment physically to get the information, you only have to be in the coverage area that can be several hundred meters.
Vision eller Verklighet ? Vad säger kontoret om företaget som sitter där?
This thesis of 15 hp has been implemented at Halmstad University, in collaboration with Saab Dynamics in Linköping. Saab Dynamics is a company operating in the defence industry where competition is tough. This necessitates new ways to increase efficiency in the company, which is the basis for this thesis. Saab Dynamics wants to introduce simulation driven design. Since Saab Dynamics engineers have little experience of simulation, required a user methodology with clear guidelines.
Maskinskydd på rullriktverk
ESAB is a world leader in production of welding consumables and equipment. The company manufactures, among other things, welding electrodes. A roller straightening unit is used in the cutting process to straighten the wire, which the welding electrode consists of, by adjusting some of the rollers during operation. According to ESAB?s standard and the European machinery directives, moving parts of machinery, such as rollers of the roller straightening unit, must be out of the operator?s reach.
Visualisering av säkerhetsinformation på AB Wahlquists Verkstäder
Workplace accidents in Sweden have in recent years increased. Companies are at the same time putting a greater emphasis on preventing accidents and inform about safety and risks. Therefore there is a need to know how to visualize this safety information. This study is based on a part of a project proposed by the industrial company AB Wahlquists Verkstäder, in which they want to visualize their safety information for new employees and existing staff, and also for temporary contractors and apprentices. The purpose of this study is to see what is required of the visualization of safety information and what guidelines that should be followed.
Bojkonstruktion
The division of Electricity at Uppsala University runs a project called Lysekil project, they have designed a buoy that uses the waves to create electric power from a generator attached to the bottom of the sea.Uppsala University is closely connected with the company Seabased and the university makes use of their facilities in Lysekil. When they designed the buoy issues occurred, the geometric design was flawed, brackets with a short shelf life and it is generally uneconomic.A study visit was done in Lysekil on Seabased facility. With this visit the project started, which is to improve the design of the buoy and the attachment of wires leading to the generator. In this project we have chosen to use a beam system with three beams that are attached to the buoy. Then a wire attached to a plate that sits between the beams will be leading to the generator. Two proposals for construction are created, what distinguishes them are the brackets between the beams and the buoy.From these constructions, the design that is considered most optimal for our project is chosen.All parts of the buoy have been modeled and the drawings are designed in ProEngineer software.The two constructions are compared with each other, but the whole focus is on the second and final structure. The report begins with an introduction describing Lysekil project, and a task description of our project.The project aims to produce an optimal buoy that will be easy to design, materials restrictive with good durability and an economical solution.Wave power true function has been studied, mechanical and finite element analysis of beams, buoy and plate design.This has been presented in this report, where in the various chapters can read more about the processes. Although the relevant facts and information on this project and buoy development is included.
Övergång av verksamhet : En avtalsrättslig tolkning av vad det arbetsrättsligt innebär att enligt 6 b § LAS ta ställning till fortsatt anställning
The swedish law of contract is fundamental within several civil law areas, among others labour law. The labour law contains more explicit legislation specificly adapted to the relation between employers and employees. Sometimes the labour law needs to rely on more general regulations, such as the law of contract. When the situation contains a specific contract relation dilemma it is logical to use the law of contract, when for example the law of employee protection does not reach an acceptabel solution.Transfer of undertaking is a situation were the employee protection is disregarded. The Euro directive 2001/23/EG prescribes, by its implemented rules in the law of employee protection, that rights and duties, such as employement agreements, passes on to the earner of the business.
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.
FPGA baserad PWM-styrning av BLDC-motorer
This thesis work contains a litterature study about electrical motors in general and how PWM-patterns for brushless DC-motors can be made. A suitable method has been implemented as a simulation model in VHDL. A simulation model of a brushless DC-motor which describes the phasecurrents, torque and angular velocity has also been made. The motor model made simulations easier for the complete PWM-system. The design was synthesised and tested with a prototypeboard including a SPARTAN II FPGA.
Maskinskydd på rullriktverk
ESAB is a world leader in production of welding consumables and equipment. The company manufactures, among other things, welding electrodes. A roller straightening unit is used in the cutting process to straighten the wire, which the welding electrode consists of, by adjusting some of the rollers during operation. According to ESAB?s standard and the European machinery directives, moving parts of machinery, such as rollers of the roller straightening unit, must be out of the operator?s reach.
Jobba till 75 år?! : Trygghet och egoism i den svenska välfärden med pensionssytemet som exempel
The purpose of this study was to try to understand the Swedish population regarding the perceptions of the Swedish welfare system, based on the reactions that occurred after Sweden's Prime Minister Fredrik Reinfeldt's statement about raising the retirement age. Our results demonstrate that the reactions on changes in the pension system in fact rooted in a safety factor and not the change in the pension system itself, through which the Swedish welfare system acts as a safety net for the population. Further the results shows that these safety factors create a form of egoism. With an interaction between empiricism and theory, where the starting point of the material was of an inductive approach, the material abstracted into different levels from which the result emerged. The focus of this study lies in the understanding of how human beings act according to one's need for security in major changes, which may be of importance to a comprehensive understanding of changes in social structures..
Simulation driven design : An iterative approach for mechanical engineerswith focus on mesh, quality and convergence
This thesis of 15 hp has been implemented at Halmstad University, incollaboration with Saab Dynamics in Linköping. Saab Dynamics is a companyoperating in the defence industry where competition is tough. This necessitatesnew ways to increase efficiency in the company, which is the basis for this thesis.Saab Dynamics wants to introduce simulation driven design. Since SaabDynamics engineers have little experience of simulation, required a usermethodology with clear guidelines. Due to lack of time, they chose to assign thetask to students, which resulted in this thesis.The aim of the thesis is to develop a methodology in mechanical design, wherethe designer uses the FE analysis early in the design process to develop thestructures' mechanical properties.
Mobil trygghetsapplikation för operativsystemet Android
This report details the development of an application for personal safety for the Android operating system. Android is a relatively new platform, primarily used on mobile phones.The purpose of the developed application is to give the user the possibility to easily and quickly alert a number of contacts by phone in case of emergencies, and to show the user?s location on a map. This is not only used during emergencies, but for other purposes as well ? for example to monitor a jogging round.The project was carried out in co-operation with the company D-Safety, the developer of the "SoftAlarm" ? the product on which the developed application is based..