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721 Uppsatser om Virtual Manufacturing - Sida 27 av 49
Förbättrad resistansmätning för grova aluminiumledare
The goal with this master thesis has been to evaluate and to examine the
stationary resistance bridge. The resistance bridge uses a 4-point measuring to
determinate the resistance, which is used in the manufacturing of the
conductor. It is then used when the resistance is to be decided for coarser
aluminium conductors. A conductor has to fulfil certain demands to be able to
move forward in the process. One of these demands is the resistance in ohm/km,
which has demands that the measure values of the resistance bridge are as true
and precise as possible.
The stationary resistance bridge had been examined through various kinds of
measurements to be able to see how stable the system is and how to obtain a
measure value as optimized as possible.
Automatiserad konstruktion av analoga förstärkare
The last few decades the development in the field of electronics has been huge. The components performance gets better at the same time as the manufacturing cost decreases. Many of the design moments that have to be done, are done automatically today, but it can get better. Especially for analog circuit design.At Electronic System in Linköpings universitet, research is in progress to develop a tool that can design analog circuits in reasonable time. It means that it has to size the components (transistors, resistances, capacitances etc), so that the circuit can fulfill the performance requirements.
Bitcoin : En jämförande studie om risk och avkastning på europamarknaden
This study is about the potential advantages as an investment option in a portfolio. The study shows that the incorporation of bitcoins in a portfolio, even to a small degree, gives significant increases of both risk and return. The different studied portfolios sharpe ratio rises, which in turn shows that the risk reducing return increases when bitcoins is used as an investment option.This study is based on Virtual Currency, Tangible Return: Portfolio Diversification with Bitcoins by Brière, Oosterlinck and Szafarz. The authors of this study have compared their own results with the study mentioned and seen its similarities and differences. The study investigated a total of eleven different assets percentage return over 192 weeks ranging from July 2010 to March 2014.
The effect of rapeseed oil and palm oil supplement and milking frequency on milk yield and milk fat quality
Milk fat is an important feature in many different milk products and other foodstuffs and it is often crucial for the dairy plants that the milk fat is stable for different manufacturing processes. Lipolysis is the enzymatic degradation of fat and is the one of the causes for an elevated amount of free fatty acids (FFA) in milk. Further, the change in fatty acid (FA) composition in milk can affect the stability of the product and also the manufacturing process. Both internal and external factors, at farm level or at the dairy plants can affect both FA composition and content of FFA. Milking frequency (MF=number of milkings per cow and day) and the composition of feed are two examples of factors generally performed at farm level.
The objective of the present study was to evaluate how FA composition of milk and amount of FFA are influenced by two different ingredients supplemented to concentrate.
Uvärdering och förbättring av kvalitetssystem: en fallstudie vid Pfizer Global Manufacturing, Helsingborg
Examensarbetet berör utvärdering och förbättring av kvalitetssystem vid Pfizer i Helsingborg. Data har samlats in, analyserats och därefter har förbättringsförslag tagits fram. Huvuddelen av datainsamlingen består av intervjuer som sedan analyserats med hjälp av teori inom TQM och gällande ISO standard. Övriga delar av datainsamlingen består bland annat av benchmarking. Svagheter med systemet har identifierat och rör bland annat, avsaknad av helhetsbild, kontrollinriktat samt suboptimeringar.
Planering & produktionsstyrning : Lean filosofin vid produktion av asfalt
Lean is a production philosophy which is about increased resource use while meeting customer requirements. The foundation of lean comes from Toyota and their production philosophy The Toyota Way. Professor Jeffrey k. Liker has worked with Toyota's production philosophy and Lean for a long time and has created a 4 P model and 14 principles that characterize the Toyota production system (TPS), which many sources refer to.The aim of my work is to study the working procedure of asphalt projects from sales to the laid asphalt with a focus on planning and production management. The goal is to examine how the lean philosophy can be applied in planning and production to simplify the flow of asphalt projects based on Likers model and principles.
Design och optimering av lagertätning : Hos hydrodynamiska oljeglidlager med labyrinttätning
ABB Motors and Generators manufacture large AC machines with oil lubricated plainbearings. The machines have occasional problems with oil leakage from the bearings. aproblem that ABB wants to be solved.In this thesis the cause of this leakage were investigated, with focus on the bearingseals.The purpose of this work was also to suggest amndments for preventing thisproblem. , and to suggest improvements that can prevent this. The first step was todo a literature survey of earlier work on this problem, study the theory ofhydrodynamic bearings and different types of seals and their properties.
Implementation av Network Admission Control
This examination work is about implementation of Cisco Systems Network Admission Control (NAC) within a leading IT-company in region of Jönköping. NAC is a technique that is used for securing the internal network from the inside. NAC can verify that the client who connects to the network has the latest antivirus updates and latest operative system hotfixes. Clients who don?t meet the criteria can be placed in quarantine VLAN where they only have access to the update servers.
Monteringslösning till dörrkarm
Dooria Sweden AB is one of the main door- and doorframe manufacturers inSweden. They deliver door frames for indoor use for project oriented buildingsites, for these types of building sites the doorpost comes pre-assembled. DooriaAB wants to minimize transport to reduce impact on environment and thetransportation costs of pre-assembled doorframes, this thru simplifying themethod of assembly.The main purpose of this thesis has been to develop a prototype solution thatbrings the three parts of the doorframe together with the same properties regardingstability and tightness of joints as the current method of assembly. A profile ofdemands and wishes were created in collaboration with Mårten Dragstedt, DeputyDirector of Dooria Sverige ABBy following the chosen method the authors have been able to produce a fullyfunctional prototype that meet the demands that were put on the product. Catia V5R20 has been used as an aid during prototype construction and virtual tests.
Great design experiences don?t happen by accident - En kvalitativ studie om design av upplevelser i Surface-computing system
Användarupplevelser är en gren inom användbarhetsområdet som på senare år kommit att studeras alltmer. Orsaken till detta är att ny teknik medför andra krav på produkter än att produkter som sådana ska vara lätthanterliga. Produkten kan likväl ha som syfte att vara rolig att använda sig av.Studiens syfte var att studera användarupplevelser beträffande Surface-computing teknologi.Företaget Interactive Institutes innovativa Surface-computing produkt Virtual Autopsy Table fick exemplifiera Surface-computing teknologi i publika miljöer. Genom att använda denna uppmärksammade produkt som underlag är syftet att undersöka vilka designmoment som kan anses vara kritiska för upplevelsebaserad design. Studiens frågeställning blev:Vilka riktlinjer kan tas fram för att vägleda en designprocess att bli mer fokuserad påanvändarupplevelser vad gäller Surface-computing system?Med utgångspunkt från studiens datamaterial, så var en del av studiens syfte att ta fram riktlinjer.
Bakhjulsupphängning, fyrhjuling
Highland Group AB was helping a customer of theirs to create an All-Terrain Vehicle (ATV), a project Highland has never been involved with before. For the wishbone arms of the wheel suspension, traditional manufacturing methods and tubes with cylindrical or square shaped cross section was preferred. We performed a simulation where the ATV was driving on a bumpy road too see the forces involved. With the results we proceeded to calculate the strength of the concepts to find out which is best suited for the tough environment in which the ATV is used. The concept that turned out to be the best was a wishbone made of circular cross section, which had good structural strength and did fulfill the demands that we required for the construction.
Hållbar design för en bättre värld -med hemlösa i fokus
The aim of this project is to examine the needs and problems that exists amongst homeless people and to develop a solution that will help them in their everyday life. Since the homeless are a relatively large vulnerable group i Sweden, their everyday lives could be made easier in many ways.A clear definition of the target group is put together to create a good starting point. What state and help orginazations do to help the homelss and the society?s view of the homeless is also relevant and has been documented. Four personal stories have been put together to desicribe cases of clear problems existing in everyday life.Several interesting problems has been defined from the research and acceptance in the communtiy, desire to be seen and heard and a lack of confidence were the main needs.
Honung och biodling : honungens ursprung, egenskaper och effekter på människans hälsa
This report describes honey, its origin, properties and effects on human health. Honey has been used for a long time in most civilizations and apiculture is an important activity sector in many parts of the world. The trend is an increase in honey production but a decrease in the number of beekeepers in Sweden. Honeybees live in a highly developed society with a strong hierarchy and a well organized distribution of the tasks. They visit a broad spectrum of plants and collect nectar to store it as honey.
Utveckling av 300 kg HD Lightlift för belysning och liknande laster
The company LightLift Esystems AB manufactures patented motorized lift systems for the illumination of halls with high ceilings. The company wants a new design for singular heavy lights in order to be more competitive.This project consists of the development of the new design under the requirements and specifications imposed by the company. The new design must support lights up to 300kg and keep the overall dimensions as low as possible without modifying the driving unit.This document contains all the designing steps followed to reach the final solution as well as the material selection, manufacturing process and assembly of all the parts that form it.The solution obtained shows to be very competitive with other alternative products, since this new design triples their maximum load capacity while the dimensions are very similar.In this context, the optical appearance was also very important to the company and so it was another main objective of this project. From an aesthetical point of view, the final solution proves to be very compact and versatile since it can either be hidden behind a false ceiling or covered by a plastic case that gives the design a very nice look.Finally, the solution achieved fulfils all the requirements and specification previously imposed. It is reliable, compact, cheap to manufacture, easy to assembly and it has a good optical appearance. .
Hur blir politiska skapelser virala succéer? : En komparativ argumentationsanalys.
Since the beginning of the 1990s, Swedish society has gone through a great change. Firstly with the personal computer and then with the internet moving in to everyday life, a new arena for interaction with society evolved. Work, education, doing bank errands and reading or discussing the news, just to name a few, now all take place in the virtual world online. Not to mention social media sites such as twitter, instagram or facebook, the last of which has over half of the Swedish population represented as members. Companies, corporations, interest groups, political parties and politicians must be aware of the massive impact that a post spread through social media can have. This thesis will, with the text analyzing tool, argumentation analysis, and on the theoretical platform of political communications theory, analyze three of the most viral Swedish political posts spread over 120 000 times each, to see if there are any combined qualities that point to the fact that there is a formula for getting a post to become a viral success on social media. The main result showed that of the three posts analyzed, all were built up around a factual thesis, argued for with foremost example arguments, not only appealing to the logical branch of argumentation but also to the ethical, and that they tended to be of high relevance and sustainability. The conclusion must therefore be that these are all qualities that tend to be of relevance for making a political post on social media into a viral success..