Dans de nombreux domaines, il est primordial de bien comprendre la dynamique de structures complexes. Les outils numériques modernes, comme la méthode des éléments finis, ont grandement amélioré le niveau de modélisation mais sont souvent limitées au cadre linéaire. Pourtant l'évolution des structures, plus légères et plus flexibles, vers un comportement non linéaire suggère la mise en œuvre de méthodes adaptées, couplant rapidité et précision. C'est dans cet esprit que ce travail de recherche développe une méthode de réduction de modèles non linéaires basée sur les variétés invariantes.

<p>I denna rapport behandlas verktyget FMEA (Failure Mode Effect Analysis), dess användning och genomförande på identifierade komponenter som ingår i elmotorer tillverkade hos ABB LV Motors i Västerås. Målet med detta arbete har varit att ge lärdom om metoden FMEA på företaget för att möjliggöra användandet av verktyget bland medlemmarna på företaget och att vi implementerar verktyget på befintlig motor för att analysera de felsätt som kan uppstå. Eftersom ABB just nu har ett pågående projekt med en ny motor kan våra slutgiltiga felanalyser även ge dem information om vilka ändringar och åtgärder som kan vara till nytta vid utformningen av den nya motorn.</p><p>Efter två veckors praktik i verkstan och en grundlig genomgång av företagets reklamationer kunde vi avgränsa arbetet genom att identifiera de komponenter som analyserna skulle genomföras på. Efter en genomgång tillsammans med våra handledare på företaget kom vi fram till att utföra våra analyser på fem komponenter, två av dem framstod som mycket kritiska som upptäcktes redan vid genomgång av reklamationerna.</p><p>Komponenterna som vi har analyserat är:</p><p>1. Lager</p><p>2. Lindning</p><p>3. Tätning av uttagslåda och uttagslock</p><p>4. Fötter</p><p>5. Sköldar</p><p>Lager som är den näst största kritiska komponent som vi tittat på är en del i motorn som är väldigt känslig, det är viktigt att följa instruktioner för underhåll och smörjning för att undvika för tidiga lagerskador.</p><p>Lindningen är klart den mest kritiska komponenten i våra analyser, detta är för att det är så mycket som spelar in lindningens funktion, koppartrådar, isoleringar, impregnering samt under själva processen kan det uppstå felsätt som påverkar lindningen negativt både direkt men även i ett senare skede då motorn är i drift.</p><p>Tätning av uttagslåda och lock beskriver de felsätt som kan uppstå då tätningen inte är effektiv och tät, vad som kan hända då det kommer in smuts och fukt och hur det eventuellt kan påverka plint eller andra elektriska applikationer. Felanalysen på fötter och sköldar behandlar mycket designfel, toleransfel och hur det påverkar komponenterna.</p><p>I rapporten beskrivs utförligt komponenternas funktioner, processer, underhåll samt det är i princip vad vi har kommit fram till i våra felanalyser fast vi i rapporten beskriver det mer utförligt. Efter beskrivning av varje komponent följer ett FMEA för respektive komponent och de FMEA:n är våra resultat av arbetet, där visas åtskilliga felsätt som är möjliga att uppstå hos varje komponent och även vilka felsätt som är mest kritiska att ta itu med.</p> / <p>In this report we discuss the tool, FMEA (Failure Mode Effect Analysis), we look at its usage and realization on identified components that are included in electrical motors made at ABB LV Motors in Västerås. Our goals with this work have been to give knowledge about the method FMEA to the company so they can learn to use this tool and for us to implement the tool on an existing application to analyze the failures that can occur. Since ABB have a project ongoing with a new motor our analyses can also give them input on what changes and actions to take on the new motor.</p><p>After two weeks training in the workshop and a thorough survey of the companys warranty claims we could define our work by identifying which components we would survey our analyses on. After a run through with our instructors at the company we draw the conclusion to survey our work on five components, which there are two components that are very critical that we discovered during our information collection with the warranty claims.</p><p>The analyzed components are:</p><p>1. Bearing</p><p>2. Winding</p><p>3. Sealing of terminal box and terminal cap.</p><p>4. Motor feet’s</p><p>5. Shields</p><p>Bearing which is after the winding the most critical component, it is a sensitive part and it is very important to follow instructions for maintenance and lubrication to avoid early bearing damages.</p><p>Winding is the clearest most critical component in our analyzes, this is because there is many parts that plays role in the windings function, copper wires, isolations, impregnation and during the process you can have failures that affect the winding in a negative way immediately but also in a later phase when the motor is running.</p><p>Sealing of the terminal box and cap describes those failures that can occur when the sealing is not effective and compact, and what happens is that you get dirt and damp in to the box and how it possibly can affect the connection box and other electrical applications.</p><p>The failure analyze on feets and shields deals with design faults, tolerance faults and how it affects the components.</p><p>In the report we describe the functions of the components, processes, maintenance and that is in general what we have in our FMEA analyses, however in the report we describe it more thoroughly. After the description of every component we have the FMEA of respective component attached. The FMEA analyses are our results in this work, in the analyses we show many possible failures at each component and also which failures are most critical to deal with.</p>

<p>Uppsatsen syftar att genom svenska Elle, amerikanska Vouge och mexikanska Marie Claire ge en ökad förståelse och kunskap om texternas dolda grundvärderingar och grepp och hur dessa kan påverka läsarens identitet.</p>

<p>Aim: As a result of growing globalization and competition the issue of internationalization is becoming more and more important and relevant for companies all over the world. With fading barriers to trade, investment opportunities and technological innovation, more and more companies see new openings for increased profit and growth by going international. During the last number of years new Swedish fashion brands and clothing companies have entered the international market, and Swedish clothing in general is gaining wider interests outside Swedish borders. Due to this I found it interesting to look at how Swedish small and medium-sized clothing companies start their international expansion, particularly in terms of market selection and choice of entry mode. Polarn O. Pyret (PO.P) is a Swedish clothing company and one of the leading concepts for children wear in Sweden. PO.P has successively expanded internationally and is becoming bigger and bigger. The company was therefore a good source to gain a deeper understanding of the internationalization for Swedish clothing companies.</p><p>Method: This thesis has a descriptive and exploratory purpose and a qualitative approach. Furthermore, a single case study strategy has been used. The data is collected both from primary resources such as interviews by mail, face to face and phone, while secondary data is collected from homepages and annual reports. For the analysis a within-case data analysis has been made.</p><p>Result & Conclusions: The main finding for this thesis is that PO.P does not follow the traditional Uppsala model for internationalization. PO.P seems to penetrate new and more distant market stepwise while gaining more knowledge and experience about internationalization, but only by the use of franchising. The motivators to go international for PO.P can be described as proactive as growth and profit are the main motivators, instead of reactive such as demand from someone else. The result also implies that market condition in terms of competition and growth potential, in addition to socio-cultural factors play an important role in the internationalization process for PO.P.</p><p>It seems that it is important for PO.P when selecting the right market for internationalization, that the market is close in geographical distance, in addition to low psychical distance, as the customers in these markets can more easily understands the brand and the concept, due to similarities in culture, climate and development.</p><p>PO.P is using a combination of wholly owned concept stores and franchise stores in Sweden and master franchise agreements internationally. By using franchise agreements PO.P does not have to be responsible of all the risk and they can easily gain experience by the franchisee. Using master franchising can on the other hand also give them less control over the activities in the markets abroad.</p>

<p>This work focuses on different kinds of Switch Mode Power Amplifiers (SMPAs) using LDMOS technologies. It involves a literature study of different SMPA concepts. Choosing the suitable class that achieves the high efficiency was the base stone of this</p><p>work. A push-pull class J power amplifier (PA) was designed with an integrated LC resonator inside the package using the bondwires and die capacitances. Analysis and motivation of the chosen class is included. Designing the suitable Input/Output printed circuit board (PCB) external circuits (i.e.; BALUN circuit, Matching network and DC</p><p>bias network) was part of the work. This work is done by ADS simulation and showed a simulated result of about 70% drain efficiency for 34 W output power and 16 dB gain at 2.14 GHz. Study of the losses in each part of the design elements is also included.</p><p>Another design at lower frequency (i.e.; at 0.94 GHz) was also simulated and compared to the previous design. The drain efficiency was 83% for 32 W output power and 15.4 dB Gain.</p>

<p>To understand students, their world and what makes them act in a certain way or how they form groups in school is a very important part of a teachers work. You get a better understanding for the students behavior by having knowledge about how they look upon</p><p>themselves and other students, to prevent prejudice and tendenses to bullying and beeing an “outsider”. Clothes and fashion are often a big part of the students identity buliding and how they look upon themselves and get looked at by others.</p><p>We have chosed to exeminate this phenomenon among girls since they are often more exposed by the media for example and with unreasonable beautyideals and other external factors that many girls try to live up to in todays society.</p><p>We have made a survey regarding the usage of clothes and fashion in the making of an identety with totally fiftyeight girls in the ninth grade on two different public schools in Haninge and Tyresö municipality.</p> / <p>Att förstå elevers värld och vad som kan göra att de beter sig på ett visst sätt, eller hur de bildar grupperingar i skolan är som lärare en viktig del i arbetet. Eftersom att man får en bättre förståelse för elevernas beteende genom att ta reda på hur de faktiskt själva ser på saker och ting, kan man som lärare också arbeta med eleverna för att få bort eventuella fördomar och tendenser till utanförskap eller mobbning. Ofta spelar kläder och mode en stor roll i</p><p>elevernas identitetsarbete och hur de ser på sig själva och hur de i sin tur blir sedda av andra.</p><p>Vi har valt att undersöka detta fenomen bland tjejer då det ofta är de som är mest utsatta av bland annat media med orimliga skönhetsideal och andra yttre faktorer som många unga tjejer</p><p>försöker leva upp till i dagens samhälle.</p><p>Vi har gjort en enkätundersökning rörande användandet av kläder och mode i skapandet av en identitet med totalt femtioåtta tjejer i årskurs nio på två olika kommunala skolor i Haninge och Tyresö kommun.</p>

<p><strong>Background:</strong> Over the past few years Swedish fashion has expanded and gained attention, both in Sweden and abroad. Every year fashion weeks take place around the world with the purpose of showcasing fashion designers new collections for the up-coming season.</p><p>Fashion week in Sweden is arranged in Stockholm four times a year in the end of January, in February, in the turn of June and July and in August. The different occasions have different activities and focus. The main focus of January and June/July are fashion shows and the main focus of February and August are trade fairs for buyers and wholesalers. The fashion shows and trade fairs are closed to the public, but other fashion events directed to the public takes place during these weeks. Seeing as many stakeholders are involved in fashion week they all have some kind of relationship to one another. This makes fashion week in Stockholm an interesting case to study and analyze from a sociological theoretical approach.</p>

<p>Intresset för ekologiskt mode har ökat tack vare dagens intensiva klimatdebatt och konsumenterna vill handla mer miljövänligt. Större företag anpassar alltmer sin verksamhet efter en miljöprofil och det har skett en ökning av ekologiska modeföretag.</p><p>Undersökningen går ut på att se om det finns en möjlighet till långsiktig överlevnad för de mindre ekologiska modeföretagen. Syftet med uppsatsen är att analysera och utvärdera miljö som marknadsföringsstrategi inom textilbranschen.</p><p>Materialet som ligger till grund för undersökningen är intervjuer med fyra olika modeföretag samt enkätundersökning med tillhörande konsumenter.</p><p>Resultatet visar att intresset för ekologiska/miljömärkta kläder är stort men att konsumenterna prioriterar utseende och pris vid köp av kläder vilket tyder på att de ställer sig låginvolverade till ekologiska/miljömärkta kläder. Företag med oäkta eko-struktur marknadsför inte sitt gröna sortiment medan företag med äkta eko-struktur genomsyras av miljötänk.</p><p>Slutsatsen blir att de mindre ekologiska modeföretagen med en äkta eko-struktur måste ha en dialog med sina kunder och skapa relationer för att kunna skapa mervärde. De har en stark grund att bygga konkurrensfördelar på men behöver inspirera konsumenter så de ställer sig höginvolverade till miljömärkta/ekologiska plagg vilket leder till långsiktig överlevnad.</p>

Allan J. Lichtenberg. / "October, 6, 1954." "This report is based on a thesis submitted to the Department of Electrical Engineering, M.I.T., ... for the degree of Master of Science." / Bibliography: p. 27. / Army Signal Corps Contract DA36-039 sc-42607 Project 132B Dept. of the Army Project 3-99-12-022

As exploration of our solar system and outerspace move into the future, spacecraft are being developed to venture on increasingly challenging missions with bold objectives. The spacecraft tasked with completing these missions are becoming progressively more complex. This increases the potential for mission failure due to hardware malfunctions and unexpected spacecraft behavior. A solution to this problem lies in the development of an advanced fault management system. Fault management enables spacecraft to respond to failures and take repair actions so that it may continue its mission. The two main approaches developed for spacecraft fault management have been rule-based and model-based systems. Rules map sensor information to system behaviors, thus achieving fast response times, and making the actions of the fault management system explicit. These rules are developed by having a human reason through the interactions between spacecraft components. This process is limited by the number of interactions a human can reason about correctly. In the model-based approach, the human provides component models, and the fault management system reasons automatically about system wide interactions and complex fault combinations. This approach improves correctness, and makes explicit the underlying system models, whereas these are implicit in the rule-based approach. We propose a fault detection engine, Compiled Mode Estimation (CME) that unifies the strengths of the rule-based and model-based approaches. CME uses a compiled model to determine spacecraft behavior more accurately. Reasoning related to fault detection is compiled in an off-line process into a set of concurrent, localized diagnostic rules. These are then combined on-line along with sensor information to reconstruct the diagnosis of the system. These rules enable a human to inspect the diagnostic consequences of CME. Additionally, CME is capable of reasoning through component interactions automatically and still provide fast and correct responses. The implementation of this engine has been tested against the NEAR spacecraft advanced rule-based system, resulting in detection of failures beyond that of the rules. This evolution in fault detection will enable future missions to explore the furthest reaches of the solar system without the burden of human intervention to repair failed components.