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254 Uppsatser om Micro Anechoic Chamber - Sida 4 av 17
Direct-EGR tillämpat på HCCI
The Homogeneous Charge Compression Ignition (HCCI) engine is promising in terms of lowNOx, low particulates and high efficiency. Due to its homogeneous charge, where thecombustion starts almost simultaneously from a number of points in the combustion chamber,only lean mixtures are possible to burn because of the resulting rapid combustion, which is muchfaster than the combustion in an SI-engine or a diesel engine. When richer mixtures are used thecombustion will start earlier and also be more violent.To phase the combustion later and lower the combustion speed, external cooled EGR can beused. The EGR-system used in this thesis uses a divided exhaust channel where one channel andits corresponding valve are used only for transporting EGR back to the intake system.Consequently the EGR-valve is connected to the intake pressure. This system is called Direct-EGR (D-EGR).Engine tests verified that the CA50 indeed is phased later when cooled EGR is used.
Hur kan mikroföretag bygga upp varumärken? : En studie av vilka faktorer ett mikroföretag kan använda vid uppbyggandet av sitt varumärke.
The purpose with this essay is to study how a micro enterprise builds a brand. This because the current situation makes it difficult to stand out from the vast amount of marketing messages available in the market without having an extensive marketing campaign. Small companies do not have the opportunity to put a lot of recourses as money into marketing as the large companies do. Neither do they afford to repair a brand failure.Brand building is a process that constantly is in progress in a company, large or small. To make this process concrete we have chosen to study the four factors; brand awareness, perceived quality, brand associations and brand loyalty.
Utveckling av hygienfunktioner i diskmaskiner : Desinfektion med hjälp av UV-ljus och ozon
This thesis within the field of Integrated Product development at the Royal Insitute ofTechnology, performed at Primary Development Dishcare at AB Electrolux, is supposed to finda solution to enhance the hygiene inside an Electrolux dishwasher. The outcomes of this thesisare functional prototypes to evaluate the efficiency of disinfection by the use of Ultra VioletLight and Ozone.The thesis has followed Electrolux Primary Development process, with delivarables andcheckpoints.Ultra violett light with a wavelength of around 264 nm penetrates through the cell wall ofbacteria and micro organisms and causes a molecular rearrangement of the cells DNA. Thisprevent the bacteria from reproducing and it is considered dead. Commonly used UV-C lampstransmits the wavelength 254 nm which is very close to the optimum for germicidal action.A competitive brand have reacently launched a dishwasher claiming to achieve greaterdisinfection with an UV feature. This dishwasher was tested during the thesis and proven tohave a very low effect on the hygienic result.Two prototypes were devolped and tested for UV disinfection of dishware.
Värdeflödesanalys på Saab Training Systems i Huskvarna
Saab Training Systems (STS) in Huskvarna is manufacturing material for educationalpurposes to armies worldwide. They are now implementing parts of the Lean productionconcept in their organisation.One part of the work with Lean production is to eliminate waste. To be able to identify waste,value stream mapping is a good tool and also what we used in our thesis. To gain a betterefficiency in the production of Personnel Detector Device (PDD) flow was one of our goals.The PDD is a harness used during battle training which registers if the user is being hit by itsenemy.Our work with the thesis started up with a short education in Lean production and in valuestream mapping (VSM). The work proceeded with a VSM of the production flow of the PDD,interviews were made and studies of literature were done to gain greater knowledge of thesubject and solve the task.The VSM resulted in five areas which were followed up out of those six we identified.
Optimering av sotningsfrekvens i biobränsleeldad CFB-panna : panna 5, Mälarenergi AB, Västerås
During the past 30 years the fuels for energy production in heating and power plants
have changed. Fossil fuels have decreased in usage whereas bio fuels in Sweden
have increased with 60% since the 1970's. Different fuels affects combustion and the
release of various substances and particles into the flue gas. This is caused by the
diverse components and chemical structures of fossil fuels and bio fuels. When the
flue gas leave the combustion chamber and enters the path to the chimney particles
in the gas are being transported out of the combustion chamber.
Konstruktion av patientsimulator för anestesimaskiner
A patient simulator for testing anaesthesia machines has been developed at Maquet Critical Care AB, to reduce costly and time-consuming experiments on animals. The device simulates human lungs regarding lung dynamics and volume, uptake of anaesthetic agents and the production of carbon dioxide, heat and moisture. Further demands on the simulator are durability and size; the device shall be compact enough to be moveable.The resulting simulator fulfils the requirements and enables better repeatability and ability to test extreme cases than experiments on animals do.Uptake of the anaesthetic agent is achieved in a active carbon filter and controlled by regulating the flow. The flow is created by a regenerative blower and controlled using a proportional valve. The uptake can be set by the user or by a simple uptake model modified to recursively handle changes in the concentration of anaesthetic agent.Carbon dioxide is fed into the system from a tank by a mass flow regulator.
En studie av fenomenet mikronationer
ABSTRACTBachelor essay in political science by Hanna Richter, spring 2006Supervisor: Mats LindbergTitle: A study of the phenomenon of micronationsThe purpose of this essay is to study the phenomenon of ?micronations?, to describe it to the reader and to discuss why this phenomenon is interesting to study in the field of political science. The questions this essay seeks to answer are:- What are micronations, and which variations are to be found within the phenomenon?- Why are micronations interesting to study in the field of political science?Bary Buzans theory of the nature of the state works as a frame of reference to this investigation of micro ?state-like? units. The phenomenon of micronations has not been investigated by the social sciences in any extent worth mentioning yet.
Svenska mikrolån samt andra finansieringsmöjligheter för småföretag
When a country faces a decline in business activity, companies have to struggle to gain external capital. It is even more important for small enterprises to get capital, as they normally do not have enough collateral to receive traditional bank loans. In Bangladesh, Grameen Bank started with micro credit programs in the early 90?s, that included small capital loans and leasing of machines. Nowadays these micro credit programs have developed to function even in industrialized countries.
A foreign aid dilemma : a study of budget support versus project aid
Foreign aid is a very debated and controversial topic. The most recent studies have focused more on GDP growth and foreign aid correlation, however not much of the debate has focused on what kind of foreign aid should be given. The most common foreign aid is budget support, often a bilateral funds transfer between two countries. This kind of foreign aid can be both conditional and unconditional from the donors? perspective.
Perceptions of domestic solar systems : a study on non-adopter views of a new technology
The world is currently facing a huge severe challenge in handling the issue of climate change. One of the ways to lower the green house gas emissions, which is seen as one of the main contributor to the climate crisis, is to use renewable technologies such as for example photovoltaic (PV) systems. PV-systems are also suitable for so called micro production, small scale energy production facilities, since it can be placed on practically any rooftop with the right solar conditions. In Sweden the usage of PV-systems has not yet gotten any wider spreading, even though the solar radiation conditions are very similar to countries that produce a lot of solar energy, as for example Germany.
The aim of this paper is to describe non-adopter perceptions of PV-systems. The study holds a qualitative approach using deep interviews for data collection.
Upplevelser av osäkerhet: En kvalitativ studie av globaliseringens effekter för ungas etablering på arbetsmarknad och familjebildning
Globalization is described as processes of economic, social and political character and a tendency in the field has been to study these aspects of the phenomenon separately. Another common feature of previous studies is to relate to the field at a high abstraction level and talk about the effects and changes in general terms. Such studies of quantitative and statistical nature in which people are constituted as homogeneous groups hides the fact that the relationship between social attributes and context creates unique positions where the effects of globalization are diverse (Sprague, 2005, pp. 16 - 18). The purpose of this bachelor thesis is therefore to break with this entrance to the field and instead focus on a micro level perspective.By conducting a qualitative interview study guided by the globalization theory of the Globalife research team, which shows how structures at the macro level can be understood to affect the micro level, the aim is to reveal potential knowledge gaps within the field.
Multipelt företagande : En studie om företagare med flera företag
Det finns många sätt att studera organisatoriska förändringar på och många författare förespråkar olika typer av checklistor som chefer bör följa för att förändringen ska bli framgångsrik. Denna studie beskriver och analyserar anställdas tankar och handlingar i organisatorisk förändring utifrån individuella erfarenheter, positioner och strukturella karaktäristiska. För att uppfylla syftet studeras två nivåer i ett företag, den reella och den formella nivån. I studien står den formella nivån för ledningen medan den reella nivån står för övriga medarbetare i organisationen. För att studera detta utgår vi från den förändring som Hyresbostäder i Norrköping AB genomför för att göra sin organisation mer affärsmässig och kundorienterad.
Reservrutiner vid arbete med elektronisk journal : - nödvändigt ont eller förutseende arbetssätt?
I och med att fler och fler datasystem används som informationsbärare inom hälso- och sjukvården, blir verksamheterna också sårbara på ett sätt som de inte varit tidigare.Hoten mot informationsförsörjningen kan vara både interna och externa. Exempel på interna hot är de egna medarbetarnas brist på säkerhetstänkande och externa hot kan vara virusangrepp och hackers, men också strömavbrott eller andra kommunikationsavbrott.Rapporten är en kartläggning av och en kunskapsinventering av reservrutiner i Landstinget Kronoberg.Under april och maj 2007 skickade vi ut en webbenkät till ett urval av medarbetare vid de båda driftenheterna. 200 användare valdes slumpvis ut, 50 stycken från vardera yrkeskategorin läkarsekreterare, läkare, undersköterskor och sjuksköterskor.Svarsfrekvensen blev 50 %.Vi har i rapporten kommit fram till att de tillfrågade medarbetarna tycker att reservrutiner är viktigt, men långt från alla vet inte vad reservrutiner är eller hur de arbetats fram. Det har framkommit att många anser att journaluppgifter inte förs in rätt i den datoriserade journalen efter ett driftstopp, då reservrutiner använts. P.g.a.
Silverlight på Incordia AB
The purpose of this report is to outline the development of a dynamic Microsoft Silverlight application, which will be able to present products and be administered in a simple manner. The project has been carried out at Incordia AB, a company that specializes in e-commerce, situated in Helsingborg, Sweden. Although the Silverlight application is customized for a particular site, forMicro AB (an ongoing project at Incordia), the template and the classes that are used to manage information, are developed so that they can be used in future projects for Incordia AB..
Samordnad varudistribution : Jämförelse mellan två logistikmodeller med nuläget i Sundsvalls Stenstad
As the cities are becoming more crowded, the urban distribution has become a major logistical challenge. Some commonproblems in the inner cities arelimited accessibility and idling. Many of Sweden's municipalities are above the limit values for PM10limit set by the EU.Sundsvall is one of these municipalities and has the vision to create a sustainable city and region. Sundsvall LogistikparkAB is part of an EU project, SMARTSET, which is collaborationbetween several cities in Europe. SMARTSETSundsvall is about to develop a market-based sustainable model for city logistics.