Sökresultat:
780 Uppsatser om Half-bridge - Sida 2 av 52
Utvärdering av Hultdins prototyp för portabel bro (drivningsbro) :
Stronger demand has been put on forestry to show environmental considerations during harvesting. This is especially for crossings of brooks with sensitive elements and great care should be observed when they are to be crossed during harvesting by logging machines. For that reason Hultdins has constructed a portable bridge that can be used for those occasions. The bridge has been developed in accordance with wishes from SCA forest, since they have a great deal of brooks in their forests and in private forests from where they buy part of their wood supply.
The aim for this report is to investigate if this portable bridge can be of interest for the forestry market. The research has been made at SCA skog in Medelpad and Norrskog in Medelpad.
Utmattning av järnvägsbroar i armerad betong : Enligt eurokoder
Commissioned for this report is Ramboll, Bridge and Tunnel Unit in Stockholm. Theidea throughout the work has been to primarily help bridge designers compilingadvice and instructions on how fatigue verification for railway bridges in reinforcedconcrete shall be performed under the new rules, the Eurocodes.After the introduction of the Eurocodes in 2011 has major problems emerged amongdesigners around Sweden. In some areas, it differs in the calculation rules comparedwith rules from the Swedish Transport Administration and the National Board ofHousing, Building and Planning calculation. Fatigue verification is one area where thenew calculation rules are different from the past.A large part of the report has been to interpret and find the relevant information inthe Eurocodes concerning fatigue. When questions or doubts have surfaced, this hasbeen discussed with Elisabeth Helsing at the Swedish Transport Administration andbridge designers at Ramboll.The result is a report where the structure is organized in the way that the bridgedesigners can move from cover to cover and realize that fatigue verification in realityfollows the same order as the report's sections.
Köldbryggor och energiförluster. En studie om energiförluster genom balkonginfästningar och deras betydelse för byggnadens totala energibehov
In this report the balconies? abutments for a property in Bo01-area in Malmö has been studied. The property which is called Vitruvius contains four build-ings where two of them have corbelling balconies with intermittent abutments. With intermittent abutment means that the 50 mm thermal bridge insulation that the balconies is equipped with, is broken regularly by a 300 mm concrete heel. The reinforcement bar that holds the balcony runs through this heel.
Is procuring qualified human capital from China a future for Sweden's wealth sustainability?
Our purpose was to examine why and how to start a ?bridge building enterprise? between qualified Chinese human capital and Swedish structure capital. The theoretical framework consists of literature from well renowned authors and is divided into four different parts: Intellectual Capital, Knowledge Management, China & Intercultural understanding. The empirical foundation has been gathered from a great variety of different sources in an attempt to cover the many complex angels in which this subject can be looked upon. Chinese students, managers in international companies with experience from China, Chinese employees in Swedish companies and different people with good knowledge of different areas of China are all among our respondents.In our conclusion we have reached the three following conclusions for why one should start a ?bridge building? enterprise in between qualified Chinese human capital and Swedish structure capital:-To fill future shortage of qualified human capital in Sweden.-To improve communication between Swedish companies and the Chinese market.-To develop qualified Chinese human capital with western standards..
PWM Effekt Audioförstärkare
The purpose with the report is to show that it is possible to design a class-D amplifier, using a programmable FPGA mounted on a developing card from Xess and a H-bridge. The FPGA was programmed in VHDL which is the language the software from Xilinx use to implement a logical function into the FPGA The logical function corresponds to a modeling of the music signal and the modeling can be described as a comparator which compare the music signal with a triangle wave and as a out signal produce a pulse width modulated (PWM) signal. The report is also a review and evaluating of two different modulating technologies, AD- modeling and BD-modeling. A detailed part about how the H-bridge was designed and how it works. The result of this project is a working audio amplifier to a significant lower price than the products in todays market..
Analysmetod för Level Design i enspelarläge : En studie av tempoväxling av Half-life 2 serien samt implementation av resultatet i ett eget verk
Denna rapport behandlar en analysmodell som använts för att analysera Half Life 2-seriens level design. Utifrån denna analys av Half Life 2-serien skapades sedan ett verk baserat på de data som samlats in. Verket kallas Project 25. Målet med Project 25 var att skapa en spelupplevelse som level designmässigt är så lik den kommersiella spelserien Half-Life 2 (Valve Corporation, 2004), Half-Life 2 Episode 1 (Valve Corporation, 2006) och Half-Life 2 Episode 2 (Valve Corporation, 2007) att en spelare inte skulle kunna uppleva någon skillnad i kvalité.Denna rapport är indelad i tre delmoment. Först gjordes en förundersökning där tempoväxlingen i Half Life 2-serien analyserades, sedan skapades själva verket och slutligen utfördes en kvantitativ enkätundersökning i syfte att försöka verifiera om verket uppfyllt sitt mål eller inte.
Jag har kompetensen! : Hur ett antal klasslärare resonerar kring och upplever sitt arbete med elever med läs- och skrivsvårigheter/dyslexi i undervisningen
The aim of this work is to examine how a number of class teachers reason about and find their work while teaching students who have reading and writing difficulties / dyslexia. The empirical study was intended to answer the question based on three questions.The work is based on a qualitative method as empirical material gathered in semi-structured interviews. Six classroom teachers, one male and five female teachers were interviewed. The interviewees were from six different schools in Stockholm Municipality and were between 27-61 years old.Most of the classroom teachers feel that there are approximately 4-5 students with reading and writing difficulties / dyslexia in each class. Half of the teachers feel that students with dyslexia may be different as they are quiet, unsecure and shy.
Mätsystem för effektförluster i en högfrekvenstransformator
To measure losses in a transformer with today?s methods is either slow or insecure. There s a new method developed by Alstom that hasn't been actualize in to a test-system and that has been the assignment in this project. The idea is built on a switched system and a CLR- circuit in the resonant frequency. The test-system has a calculated power-loss that make the efficiency to be as high as 99,8% and in reality over 95%.
Översättare eller särskiljare? -elevers syn på att ha elevassistent i grundskolan
In all times school has defined and categorized pupils from a hypothetical normality. The National Agency for Education is today critical to how the municipalities provide for the necessity of special support for pupils with difficulties in school.Pupil`s assistants has been a growing profession in school during the last decade and their importance for the pupils is relatively unexplored. The aim of this study is to find out how the pupils think about having pupil`s assistant during the obligatory school on the basis of the ideas of power, knowledge, involvment and understanding. The study is based on qualitative interviews, consisting of half-structured questions, with eight pupils that have or have had pupil`s assistant during their time in senior compulsory school. The result notifies that the pupils feel powerless in school, they have no opportunity to affect and they do not think they are someone that could make any change.
Korsvirkestraditionen i V?stra G?talands l?n Utbredning, konstruktion, karakt?r och kontext
This bachelor?s thesis examines the tradition of half-timbered buildings in V?stra G?taland County as there is a current lack of research on this building category in this region. The lack of knowledge may lead to the loss of potential cultural heritage values if these buildings do not receive attention. Therefore, the study aims to provide a more comprehensive understanding of its role within the region. The goal is to expand and nuance the existing research on the Swedish building tradition, particularly in V?stra G?taland County and the general Swedish half-timbered tradition.
Status i sitcoms : En klass- och genusanalys av Two and a Half Men och The new Adventures of Old Christine
Syftet med undersökningen är att genomföra en jämförande klass- och genusanalys av två stycken situationskomedier: Two and a Half Men och The new Adventures of Old Christine.Vi undersöker vad som genererar status i de två serierna och om detta skiljer sig något serierna emellan. Vi kommer bland annat fram till att egenskaper som ett lyckat äktenskap och god ekonomi är statusbringande medan ett misslyckat äktenskap istället lätt genererar låg status..
3D-modellering av en plattrambro i Tekla Structures : Arbetsmetod av en fallstudie
Detta examensarbete ämnar besvara huruvida Tekla Structures kan fungera som ett lämpligt 3D-modelleringsprogram för konstruktionsgruppen Nyanläggning och Bro inom Grontmij Sverige. Med goda erfarenheter av Building Information Modeling, s.k. BIM, och 3D-modellering inom andra delar av Grontmij så fanns en önskan att optimera gruppens arbetsprocesser med den senaste kunskapen inom området. Arbetet har fokuserat på att praktiskt modellera en fallstudie baserat på ett av Grontmij tidigare genomfört anläggningsprojekt. För att säkerställa fallstudiens representativitet valdes en plattrambro med stor mängd armering som ansågs ha en komplex geometri vilket potentiellt skulle fördelaktigt kunna representeras i 3D.Vid skapandet av 3D-modellen och tillhörande ritningar delades processen in i tre steg; modellering, detaljering samt visualisering.
Är vi artiga mot virtuella agenter?
The CASA-paradigm, Computers Are Social Actors, was introduced in the book "TheMedia Equation" by Reeves and Nass. One of their experiments concluded that we tend to be polite to computers in the same way as we are to people. In this study I have replicated Reeves and Nass experiment but instead of a text-based interface I have used a virtual agentin order to find out if we are polite to the agents, or still to the computer. Two experimental setups was conducted. The two setups had a common first part that was carried out on onecomputer with one agent.
Effektutveckling i den koncentriska fasen i bänkpress och knäböj
Aim: The aim of the study was to investigate 1RM and what power could be generated in bench-press and half squat concentric at certain percentages of 1RM. Special interest was put to evaluate men (M) and women (K), strength trained (ST) verses non strength trained (EST) in generating absolute power as well as power relative to 1RM.Method: In total 59 subjects mean (± SD) age 24.9 ± 4.1 years divided into four test groups: 20 male non strength trained GIH-students (EST M), 20 female non strength trained GIH-students (EST K), 10 male strength trained - sprinters on national/regional level (ST M), 10 female strength trained - sprinters (ST K) on national/regional level. They did two tests on 1RM and power in events of concentric bench-press and half squat in a Smith machine. In the first test session 3 ? 5 lifts were made to measure 1RM in each event.
Husen under bron Förskola : Houses Under the Bridge Kindergarden
Kindergarden - How can we create different synergies between different fields that they can benefit from each other? What different activities will suit the kindergarden? How will our perception of the kindergarden, of its need and function in society, change?In this Degree Project in Architecture I will be investigating the combination of the kindergarden together with a restaurant and a dance studio. I believe these activities will harmonize since they have overlapping benefits: We all eat, move and grow.With the new architectural activities in mind, I will further investigate the importance of the kindergarden as a part of society, more specifically our perception of what function it may, may not or could fill. I share the idea with a lot of authors, scientist that we are headed toward a society where children are kept too safe, thus minimising their chance to experience and learn to cope with a harsh reality when they grow up as adults. It's ok to get hurt to an extent, as long as they do not endanger their lives..