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1093 Uppsatser om Manufacturing techniques - Sida 35 av 73
Utvärdering av digitala provtryckssystem
Six different Digital Proofing Systems from three different techniques have been evaluated as totechnique, printing quality, economy and usability. Digital proof from two paper qualities, coatedand uncoated, has been compared with references printed in offset, to see how good they match eachother. Only two Proofing Systems manage to print on reference paper. The other Proofing Systemsuse special paper for digital proof.Measurements and visuell judgement show that the Digital Proofing Systems visualise referencepictures with quite good quality. Proof optimised for coated paper visualise the colours with goodresult.
Radomoptimering för luftburna störsändarkapslar
These studies are done in behalf of Saab AB AVITRONICS in Järfälla in the form of a thesis atthe Royal Institute of Technology in Stockholm.The task was to examine the parameters that plays a role in the construction of modern radomesoperating in broadband applications.This was interesting for Saab to get an indication of which way they should go at the newdevelopment of radomes for the next generation of equipment for electronic warfare.After a thorough analysis of the influencing parameters, a optimization application was made toget a automated way to get a radome design by specifying data on the radome size, airloads,materials, etc.This is to minimise the time of the laborious work that radome development.inply.This was solved by letting ANSYS calculate the strength of the radome structure and MATLABcalculate electromagnetic data and cost models of different sizes and materials.All these parameters woven together with the optimization tool modeFrontier picks data from therespective program and perform an optimization algorithm and then iterate a step and sends thisdata to calculation programs for the new input data. In the end, we have received a convergedpoint with our optimal solution.For the presumptions and limitations for which applied for this thesis, the result was prettyintuitive. That is to say that the smaller radome - the less materal is needed and lowermanufacturing costs results in the cheapest solution possible. The reality is not so simple. Whereyou have to take more of the electrical details such as the effect on the transmitter as a majorfactor..
Survey of regulations concerning pesticides in Sweden and the EU : cultivation techniques and competition aspects for Swedish onion and apple producer
As a member of the EU, Sweden has, in some cases, transferred the controlling rights to the Union. This means that the rules defined by the EU must be followed in all member countries, including Sweden. The European Agricultural policy constitutes the largest part of the EU's
annual budget and is in contrast to many other areas fully funded at EU level. The last decade, many new regulations on chemicals and pesticides have been introduced which brought great changes and a lot of work throughout the Union, including Sweden. Sweden has always had a strict policy on chemicals and has been at the forefront when it comes to sustainable agriculture and environmental management.
Matningssystem för pellets
In today's society, the availability of energy plays an integral part in our everyday lives. Unfortunately, the price of energy in Sweden has increased in recent decades. A large part of our energy consumption goes to heating modules for houses, where heating methods that depend on energy sources such as electricity, district heating, fuel oil, gas and biofuels are the most common ones. During the winter period, the increase in energy costs becomes significantly evident, especially for small property owners. This increase in energy cost is most noticeable for home owners with electric heating.This thesis is written at the Halmstad University, in cooperation with a company, which makes parts of this thesis confidential.
Vindpark Vänern : Fundamentteknik och Logistik
An analysis of a specific application of anaerobic wastewater treatment at a pulp and board mill, Stora Enso Skoghall, was carried out. A literature study was done and effluent wastewater from CTMP pulp production was analyzed. The analysis consisted of a broad constituent analysis and an anaerobic treatment trial. Results from these test where used to calculate the treatment effectiveness and resulting energy potential at the mill.The literature study and constituent analysis showed that toxicity of the water to be treated, due to wood extractives and sulphur content, was of concern. Detoxification chemicals targeting these constituents where used in the anaerobic treatment trial.
Att motivera elever
Middle managers in social care find themselves in a middle position. The middle management position involves demands from several interested parties. The demands affect and generate feelings both within themselves and within others and the middle managers have to deal with them all.The aim of this study was to investigate the social care middle manager?s personal experiences of emotions in work.We have completed interviews with four middle managers who are assigned to carry out social care. When doing the interviews we used an interview guide divided into different interview areas.
Mars och Venus i cyberspace ? genusmönster i bloggen
The purpose of this thesis is to find out if people have changed the way in which they write since the introduction of the internet. Men and women have been writing books, articles, letters, diaries and different types of literature for centuries. To give the reader some background about the weblog as a literary media, this thesis has a whole chapter on half-public literature that includes the history of letters and diaries. The weblog is a unique way for anyone to be whoever they want, whether it be a man or woman, old or young. The reader has no possible way of knowing if the script is true or not.
Demonstratortest av gassensor baserad på tryckt organisk elektronik och jonledande papper
Researchers at Karlstad University have developed a method for making paper ion conducting. The reasearchers want to test this technique in various applications and produce products that make use of the ion-conducting paper. Hopefully this will drive the development forward and result in new applications for the ion-conducting paper.This study was to test the possibility of manufacturing a gas sensor of conducting paper along with electrodes of conductive polymers printed on the paper. By comparing the paper sensor with an electrochemical cell in which the electrodes of conductive polymer replaces electrodes of metal and ion-conductive paper replaces the liquid electrolyte in the electrochemical cell, it was hoped that it would be possible to measure the oxidation and reduction reactions that a gas could introduce at the electrodes.It was shown that it is possible to measure a potential difference in the range of 0.3 V to 0.5 V between the electrodes when exposing an electrode to 100% oxygen. The reaction that takes place is relatively slow and the reaction rate is partly due to the distance between the electrodes.Since the sensor can measure oxidation and reduction reactions it is possible that, in further development of a sensor, the sensor can be made ??into a versatile sensor with more applications than gas measurement as there are many more ways to oxidize or reduce the electrodes than by exposure to oxygen.During the study there have been discussions and meetings held with various companies in the sensor industry to be able to specify what the market demands of a sensor made ??of paper and the requirements that must be placed on the sensor for it to be interesting for the companies..
Big Bath Accounting och bonus i börsnoterade företag
A company may use different accounting techniques to adjust accounting information and thereby attract investors. Big Bath Accounting is defined as a strategy used to make changes in the financial statements and reduce the results further when the companies expect negative results. This phenomenon has been observed empirically and occurs when including CEO change and negative results. The aim of this study is to test whether there is another factor affecting Big Bath Accounting, namely remuneration of the CEO. The CEOs should, by changing the accounting information, be able to influence their compensation.
Brytningstid i Internkommunikationen? : vilken roll har Intranät och e-post i organisationers kommunikation?
Having a functioning internal communication is necessary for the survival and existence of every company. Traditional communication channels are for example meetings, noteboards and personnel newspapers. During the last ten years we have witnessed an explosion of new channels, who are based on information technology. IT is a natural part in new IT-companies, like Framfab and Icon Medialab, but what role does IT have in a large, manufacturing company with a long history? The purpose with this thesis is to investigate how IT has influenced the internal communication in a company.
Se men inte röra : Röntgen som verktyg i dokumentation av historiska stoppningar.
How can we use modern X-ray technology to raise awareness of the information that is hidden in historic upholstery? The materials and techniques add information to the history object in question and about a profession that is sparsely documented in our country. The knowledge we have today has largely been obtained by studying damaged upholstery, or by removing the show cover and upholstery, a technique which involves high risk of damaging the upholstery. X-ray technology offers a non- intrusive way to examine historical upholstery.Through case studies, I examined four artefacts. The artefacts went trough an inititial visual exam before being transported to The National Heritage Board in Visby where they underwent a thorough X-ray exam.
Är klassröstningen fortfarande signifikant? - en studie om kommunalvalen i Stockholm och Göteborg 2002
The association between social parameters (i.e. socio-economy and level of education) and voting behaviour has been reviewed and analysed based on data from municipal council elections in Stockholm and Gothenburg in 2002. Some social scientists argue that the class voting is in decline and that new social cleavages have emerged. However, by using regression analysis techniques, this study implies a strong dependence of voting behaviour on social parameters, such as socio-economic status (SES) and level of education. Socio-economy appears to be a dominant predictor in the analysis.
Relationer mellan kvinnor : Avund och konkurrens mellan kvinnor i Försvarsmakten
Syftet med denna studie är att undersöka kvinnors erfarenheter av konkurrens och avund kvinnor emellan inom Försvarsmakten. Tidigare forskning redovisar att friktioner mellan kvinnor skapas på grund av samhällets genusordning, att kvinnor är det underordnande könet vars prestationer inte värderas samma som männens. Det visar sig också att kvinnors behov av bekräftelse och identifikation genom andra kvinnor skapar slitningar. En enkätundersökning ifylld av kadetter på alla Försvarsmaktens skolor visar att avund och konkurrens är ett tämligen vanligt förekommande fenomen. De kvinnliga kadetterna upplever att männen bidrar till att skapa avund och konkurrens kvinnor emellan. De uppger även att de i högre grad känner konkurrens gentemot männen på grund av att Försvarsmakten är en organisation gjord av män för män och en frustration bland kvinnorna är uppenbara på grund av kvinnors och mäns olika förutsättningar i Försvarsmakten..
Optimering av skumdämpande additiver För användning i en lufttorkande vattenburen rostskyddsprimer
The development of defoaming additives is steadily progressing and there are therefore always new and improved additives on the market. Some modern additives provide the desired defoaming effects by themselves, in contrasts to previous additives that needed to be used in combination with other additives. The task of this bachelors thesis was to evaluate the possibility of using these improved defoaming additives, with the aim to find alternatives that give the system better defoaming attributes while, at the same time, using less of the primary products. The tests were carried out in the coating type Teknocryl Aqua Combi 2780. The coating is a waterborne air drying acrylat-latex/alkyd based coating that can be used for both single coat painting and primer.
En reklambyrås utveckling. En studie av anställdas attityd och motivation på arbetsplatsen
This thesis emphasizes the importance of understanding the employees? attitude and motivation towards their workplace at a company that works in the advertising business. An example company; thcommunication agency PS Communication in Stockholm, was used for the empirical part to investigate the purpose. The topic is interesting since the company works in a fast changing environment with new techniques,tools and professionals and the company is also going through an expansion that include many new recruitments.The purpose in this thesis is as follows: ?the purpose of this study is to elucidate the fate of attitude and motivation of employees in relation to the workplace during business expansion, if performance is reduced and competition increases.?The analysis and results shows that attitudes andmotivation among the employees in the workplace has deteriorated, the employees agree that it is due to expansion the company is undergoing.