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914 Uppsatser om Unitary account - Sida 30 av 61
Förbrukningsreduktion : Ett alternativ till gasturbiner som snabb aktiv störningsreserv?
The gas turbines in the Swedish secondary reserve are reaching the end of their technical lifetime, hence alternative solutions need to be considered. One of the solutions thought to have the greatest potential is the use of so called consumptionreduction. By entering contracts with large consumers, agreements are made to reduce consumption in the event of major disturbances in the power system and thus being used as a secondary reserve. This thesis investigates the feasibility of consumption reduction as part of the secondary reserve. This has been achieved by developing a requirement specification for the disturbance reserve and by studying the technical and economic potential for consumption reduction among a range of consumers.The technical potential for consumption reduction that fulfils the requirements for participating in the secondary reserve are on average 750 MW in SE 3 and 98 MW in SE 4.
Dimensionering av betongkonstruktioner : En jämförande studie av BBK 04 och Eurokod 2 vid dimensionering av balkar och pelare
Today, we use BKR and BBK 04 when designing concrete structures inSweden, which will, in the near future, be replaced by Eurocode 2. When you are designing buildings, you will use Eurocode 2 Part 1-1 and with this new standard, some new rules and general rules will be necessary to adopt. To examine how BKR and BBK 04 tells apart from Eurocode 2 when designing concrete structures, one beam and one column with often common dimensions, is studied. The beam is designed with consideration of (considerate to) durability at bending moments, shear forces and control of cracking. The column is designed with consideration of durability at eccentric axial load and bending moments in cross section on account of (due to) geometric imperfections. BBK 04 has gone one step closer to Eurocode 2 than earlier editions and the things that are different, when calculating reinforcement, is how they use the partial factors.
Förmånsbeskattning av dispositionsrätter till tillgångar i fåmansföretag
This thesis discusses taxation of benefits, which shareholders and company leaders can enjoy from close corporations. The Government said in the government bill lead- ing to the amendments regarding taxation of benefits, that it should be the possibility alone to enjoy benefits that should be the reason to impose taxes on company lead- ers. The Swedish tax agency (Skatteverket) has agreed to that statement. In other words, it isn?t necessary that someone actually enjoys the company?s assets for pri- vate use, it is enough that they have the right of disposal of them in order to be taxed.
Kuratorers arbete med gymnasieungdormars psykiska ohälsa: en kvalitativ studie
The overall aim with this essay was to study how counsellors at upper secondary school work with mental illness among youths and compare this with what research and theories advocate. This because there has been a rise in the number of people, especially in the age-group 16-24 years, suffering from different degrees of mental illnesses. The school can in some aspect contribute to cause mental illness but it also consists of good opportunities to offer counselling and work to prevent mental illness among the students. This study consists of five qualitative interviews and two short telephone interviews with school counsellors. During the interviews they expressed their thoughts concerning factors that causes mental illness among youths and gave an account of how they work with prevention, counselling and collaboration.
Hur svårt kan det va´? : Från formuleringsnivå via transformeringsnivå till realiseringsnivå i ämnet Dansgestaltning på gymnasiet
This report is a hermeneutic analytical study of a practical pedagogical situation. For three occasions I observed my own practice as a dance teacher and how a moment, choreographic approach in the governing documents for upper secondary school GY11 was executed in a group of dance students. The part is formulated in the course objectives for the courses on the arts program under the topic Dansgestaltning with focus on choreographic approach. The study is based on a socio-cultural thinking but also takes into account the prevailing gender theories and focuses on how the process of formulation level, through the transformation level is portrayed in the realization level of the dance regarding choreographic approach. The study illustrates educational research from both a dance perspective and a school development perspective.
Adaptiva gränssnitt: Desktop-first vs Mobile-first : En jämförelse av två strategier för att skapa adaptiva gränssnitt för webben
In recent years the development of mobile devices has made great progress and today they account for a large proportion of the internet usage. This trend poses new demands on web developers as more companies and product owners want to customize their services and products for this new market. In this study we examine the pros and cons of the strategies desktop-first and mobile-first in the development of adaptive interfaces for the web. The study aims to create guidelines for situations in which each strategy fits well. The purpose of the study is to create an understanding of how these strategies can help developers and product owners to develop adaptive interfaces based on different goals and objectives.
IKT på fritidshemmet : En kvalitativ studie om pedagogers uppfattningar och erfarenheter om IKT på fritidshemmet
Information and communication technologies (ICT) are constantly evolving in today's information society. The school uses ICT as a teaching tool and it begins to be included at the leisure-time in school by the educators.Aim of this study is to examine how educators describe their perceptions and experiences of using ICT in the leisure activities. The questions is about how the educators use ICT, what they believe children learn of ICT, and which advantages and disadvantages they see with ICT at leisure-time in school.Through a qualitative approach, I have had my questions answered by six trained educators, five of whom are recreational educators and one who is a preschool teacher. These have individually answered my interview questions as an interview took place over a phone call, while the others answered the same questions by e-mail. The interview questions were open-ended questions that were formulated so the educators could respond so freely and fulfilling as possible.The survey shows that teachers use ICT in multimodal approach at leisure-time in school, both in informing parents and in activities with the children.
TV-stativ med nytt ställdon
The purpose of this thesis work is to evaluate how the physical behaviour of a pipe bend is affected by the pipe bending procedure. Effects such as initial ovalization, thinning, thickening and plastic hardening from the bending procedure are examined and the mechanical properties of pipe bends containing these effects are investigated.This has been evaluated by creating a detailed Finite Element model of a pipe that is being bent. Then the differences compared to a bent tube in a virgin state, so called Elbow elements and an analytical in-house program have been evaluated. The virgin state refers to a model of a pipe that is bent from the beginning, thus having a homogeneous thickness and not containing any plastic hardening. The Elbow element is a calculationally cheap element, specially developed for accurate calculations of pipe bends in an initially virgin state.The goal with the thesis work is to get a better picture of what happens to a pipe as it is being bent, how this affects the mechanical properties and to evaluate the possibility to develop an easy method for taking these effects into account when using the Elbow element.This report describes the layout of the work and how the detailed FE-model has been constructed.
Rekonditionering av IBC
This report describes how the system may be exposed to oscillations and how this can lead to resonance. Resonance is a phenomenon that occurs when a system is affected by external periodic oscillations with frequencies close to the system's natural frequencies. Structures subjected to resonance can risk great damage and destruction, why resonance is something that is important to take into account when designing structures. Alternative ways to counteract resonance is to supply damping in the system. Damping means that the resonance decreases instead of letting the amplitude increase.The report discusses some examples on constructions that have experienced the effect of resonance.
?Ett bra liv förutsätter att föräldrarna är rätt så aktiva? : Föräldrars perspektiv vid LSS-handläggning för barn
The aim of this study was to describe and understand parents? perspectives in aid assessment for children according to The Swedish Act (1993:387) concerning Support and Service for Persons with Certain Functional Impairments (Lag 1993:387 om stöd och service till vissa funktionshindrade, LSS). The study took place in the county of Kronoberg, Sweden, and was based on a total of nine qualitative interviews. Four interviews were made with parents? of children who has interventions according to LSS (1993:387) and five interviews were made with LSS case workers. In our study we saw that parents? perspectives often is the largest amount of information that case workers take into account when assessing aid and as a case worker you listen to the parents perspectives to capture the child?s and the family?s needs. It also came clear that the parents? perspective is not only about the child?s needs, but also includes the parent?s own needs and their family?s needs. The parents in the study felt that they made the decision about the choice of aid and considered themselves as the one who decides the family?s requirements. It turned out that treatment and understanding from the case workers was important for gaining access to the best help and making parents feel listened to. Parental responsibility was of great importance for the assessment, and it often led to disagreement between parents and case workers. During the study, we saw that power existed in the relationship between case workers and parents, but that it could be moved and changed during the time of aid assessment..
Vår fader Abraham : En studie av Abrahams funktion i Romarbrevet 4 i ljuset av The New Perspective on Paul.
The background to this thesis is the debate of the last decades within exegetics, concerning the so called "New Perspective on Paul". Starting from this discussion, the thesis is aming to investigateand discuss the function of Abraham in Paul's argument in Romans 4. This is achieved by, to start with, a thoroughly examination and analysis of different translations of Romans 4:1. Secondly, by trying how the translation suggested by Richard B. Hays can be motivated using a narrative perspective of interpretation emphazising the context of covenant history of the text, and thirdly, by examin and discuss other interpretations of the text and compare their ability to bring intelligibility to the text.
Solel och solvärme ur LCC-perspektiv för ett passiv-flerbostadshus
This master?s degree project concerns the combination of a multi dwelling passive house with solar energy for the generation of electricity and domestic hot water (DHW). Different alternatives with either solar thermal systems or photovoltaic (PV) systems are compared with two reference alternatives producing DHW from electricity or district heating. The economical comparison uses a life cycle cost (LCC) perspective based on the present value of expenditures for investment, energy and annual operating and maintenance.The energy yields from the solar energy systems were calculated by hand and with simulation software. Calculation and dimensioning of PV systems were carried out with a software called PVSYST.
Shooting Target - Design : Product Development
The project has involved the development of two kinds of shooting targets in partnership with Marcus Bergkvist and Christopher Åkerblom. The project from the client was divided into two parts. This thesis discusses solutions for hands-on transport, development of tripods and an overall design. The second thesis affect resetting systems for the products.The work was done with a process and methodology based on design perspectives. This process has involved the search of relevant data which has provided the platform and opportunity for appropriate and purposeful design work.Concept development has been done using hand sketches and Photoshop, where a simple visualization of different concepts for the tripods has been produced.
Elektromagnetisk och mekanisk design av en 20MW turbogenerator
At the Division of Electricity at UppsalaUniversitythere are ongoing researches, including a research concerning turbo generators.Turbo generators produce a large share of electricity in the world; however they are costly mainly due to the fact that the cooling and ventilation that are needed to eliminate the excess heat from the generators are expensive. Turbo generators work with high efficiency and in this project, the main task is to simulate a generator while taking into account that the generator must be designed against self-oscillation, centrifugal force, exhaustion and heat. The turbo generator must be simulated without being too expensive and complicated.In this project, the dimensions of the turbo generator depend on the efficiency of it, and where the losses are in the generator. Furthermore, the optimum values need to be chosen with the help of the ACE simulation program. The report begins with an introduction describing the project followed by a task description that is dealing with the project.
Preflight utvärdering
PDF-files are to become a native file format in all prepress supplier workflows during 2006. This will give an opportunity to automate and develop a more stream lined prepress workflow. It is desirable to secure digital files by preflight the files early in the process. The objective with this project is therefore to find software that can automate parts of the preflight process and also to build up a well-functioning preflight workflow for preflighting both PDF-files and native files.Meetings have been held with preflight suppliers to find a solution for how to automate parts of the preflight in the prepress workflow. Seven preflight software companies demonstrated the possibilities with their products and four of these were chosen for continuing working with.