Dissertations / Theses on the topic 'Båtar'
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Kvist, Amira, and Petter Elnerud. "Fartreglage för elektriska båtar." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279756.
Full textThis report covers the completed project treating the development of a throttle for electrical boats. The project was done as an assignment given from the company GreenStar Marine and was made as a bachelor’s degree project at the Royal Institute of Technology. The purpose of the project was to develop a throttle that met a diversity of requirements and requests from the company and from the identified stakeholders. The developed product would also need to solve several identified problems with GreenStar Marine’s existing throttle, see figure 2, that for example was not compatible with boats with two motors. Figure 2, GreenStar Marine’s own throttle, from GreenStar Marine (2020). The project was done using skills in the field of product development and engineering, with the guidance from supervisors and with communication with GreenStar Marine. The project started out with a study of the company, the market, the stakeholders and the product users. A product specification was written, the problem was detailed and the functions of the product where defined. All this laid the groundwork of the generation of ideas which led to the development of four concepts. The final concept was Veloce, a design where the speed is regulated trough the turning of one or two knobs around an axis. This concept was developed for boats with one or two motors. For boats with one motor it has one knob, and for boats with two motors it has two knobs, one for each motor. The two knobs can be controlled both separately and together. When it comes to the assembly of the throttle, it can be assembled both on a table and on a wall.
CARLSSON, MARTIN, and CLAES HOLMQVIST. "Utveckling av skjutdörr till båtar." Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-104398.
Full textFranzén, Åsa, and Jonas Bergkvist. "Designförslag på alkolåsmodul för båtar :." Thesis, Högskolan i Kalmar, Institutionen för kommunikation och design, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hik:diva-763.
Full textIn this report we address a problem at sea, namely alcohol. The limit at sea measured in ‰ (permille) is at 1,0 ‰ but in a car the limit is 0,2 ‰. This topic is relevant and it has also been brought up in a TV-show that showed people under the influence of alcohol being taken care of by the coastguard (www.kanal5.se). With this in mind we're presenting a design proposal of an alcolock module to install in pleasure boats. The module should be simple to use and not to be seen as a burden. The purpose of this alcolock is to prevent people under the influence of alcohol from hurting themselves or others in their environment due to inattention or recklessness. Everyone onboard should have their own assignments to create the harmony of “Happy Ship”. The study of the alcolock module consists of surveys and interviews with the users to get as close to an independent view as possible regarding design and function, without our influence. To aid us, we used a theoretic framework called Activity Theory (AT). The result was a design proposal of an alcolock combined with a drivers license. The drivers license is inserted in the card reader of the alcolock module and will remain there for the duration of the trip. This design proposal might result in a safer environment at sea, since the operator has to breathe in the alcolock, and possess a valid drivers licence to be able to start the boat. If the operator has alcohol on his/her breath the speed will be reduced with consideration of the amount of alcohol. The insurance policy might also either be reduced or increased, depending on if there were alcohol on the operators breath or not. The reason for this is that the boat has to be movable in case of bad weather or an accident. There was also a suggestion to how the log on process would work with the different administrational pages.
Hildestrand, Oskar. "Stöldsskyddssystem : Designat för båtar och båtmotorer." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299529.
Full textThefts of boats and especially outboard engines are a major problem in Sweden. Today, around 2,000 outboard engines are stolen every year and there is therefore a great need for effective anti-theft systems among boat clubs and boat owners. The purpose of this bachelor's work has been to develop encapsulations that will protect and benefit the technology of the anti-theft system that BlueMoor has developed for boats and boat engines. BlueMoor's anti-theft system uses long-range Bluetooth technology and motion sensors and is aimed at multi-user boat ports. In this project, the focus has been on developing a sensor pod with associated base unit. Data collection regarding the needs of the target group and suitable technology was mostly done through interviews, site visits and a literature study. During concept generation, the focus of the base unit was on developing an encapsulation which would be difficult for thieves to detect and could be easily mounted at high altitude to benefit signal reception. The fact that the sensor pod was small and could be mounted in confined spaces and its ability to alarm if it were unwantedly removed from its location, was important aspects as concepts were developed. The concepts that, after evaluation, showed the greatest potential were further developed by conducting tests for assembly and physical load, and were supplemented with additional data collection. In the final concept, polycarbonate encapsulations were selected, which is a material that lets signals through, allowing the antennas to be protected on the inside. Specifically for the base unit, the design was developed to avoid detection and to protect all fastenings from unwanted access. The sensor pod resulted in a compact and durable design, with simple fastening consisting of mounting tape and snap dressings with an integrated warning system for unwanted removal.
Ekström, Victor. "Utvärdering av dämpande förarstolar i snabbgående båtar." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211579.
Full textSjöberg, Toivo. "Skydd av Amfibieförbandens båtar i en förändrad hotbild." Thesis, Försvarshögskolan, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-1723.
Full textIn the near future Swedish amphibious forces will be utilised in international operations.The operations can be carried out anywhere in the world. The threats encountered are atthe same time both complex and diffuse and are also changing with technicaldevelopment. The global distribution of weapons, reconnaissance equipment and othermilitary outfits will increase.It is only reasonable that the personnel we deploy is protected by the new technologyavailable. The boats that are used by the amphibious forces should provide the bestpossible protection. The ongoing modernization of the amphibious forces entails, amongother things, a new combat boat being used by the forces. A prototype of the boat isestimated delivered in 2009. When it is produced, it is important that the protection of theboat has a central position even in the trial phase. The boats should be equipped so thatthey can provide enough protection against reconnaissance activities and weapons.During a UN operation it is, as a rule, important to be visible and to show the flag. Whenthe character of the mission changes with short notice, the boats must also be able tofunction in a hidden appearance mode when under threat from weapons. The boatsshould be able to function in both these situations.This paper attempts to present a perspicuous view of the protection technology that theSwedish defence in developing for boats and that will be available in the productionperiod of the new combat boat.
Avdelning: ALB - Slutet Mag 3 C-upps.Hylla: Upps. ChP T 02-04
Helmbro, Robert. "Konstruktion av rigg för utveckling av mjukvara till datorsystem i båtar." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-97160.
Full textThe past several years have witnessed a strong development and spreading of computers in many areas. One of many advantages with computers is their flexibility, one single computer can perform many different tasks. This thesis aim to make use of the computers resources in pleasure boats. The objective with the thesis is to build a rigg for a computer system in boats. The rigg will be used as tool for further testing and development of software. The computer shall replace supervision instruments and media systems in motor driven pleasure boats. For example tachometer, thermometer, GPS-plotter, DVD and music player. The solution is to use a small PC. Then it is possible to implement most of the functions only by using existing peripherals. To supervise the motor a signalconverter who report to the PC via USB is designed. A keypad is also designed. For development a LabView program is used to simulate and generate necessary electric signals. The result of the thesis is a rigg and a signal simulator, the author hopes that these parts will underlie further development to a commercial product.
Sedin, John. "Analys av varför bilar styr framnär båtar och flygplan styr bak." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-153634.
Full textRear wheel steering of vehicles is a possible steering, which has been forgotten in vehicle design. Earlier works show only details concerning one vehicle type from this subject. In this work the author will first present a background to how different vehicles are steered and then the analysis of it. The purpose with this paper is to from literature and interviews answer to which impact the placement of the engine and the conceptual differences have on the steering from different vessels. It will also answer which anticipated properties the steering will have if it´s not placed in a conventional way. Through simulation in MATLAB the paper will answer to which degree mass, velocity and length of axle influences steering behaviour of a rear wheal steered, RWS, car and how the steering response is different to a front wheal steered car, FWS. The result from the literature and the interview shows that placement of engine and propeller near the rudder is very important for a ships steering capability. For vehicles it has most effect on the centrum of gravity, which is to prefer in middle of the vehicle,and for airplanes the ability to place cargo. The conceptual differences shows that a larger vehicle has more to gain, if it is equipped with four wheel steering, due to turning radius is a more critical aspect. For airplanes in super sonic speed it reveals that they need another set of wings. Ships need a smaller turning radius in harbours and all size of ships then use thrusters. The properties of a vessel with not conventional steering are most negative for cars and ships because of risk for oversteering and instability, while for airplanes its already in use in form of canard wings. The simulations display that rear wheel steered vehicle should have a limit of velocity because of its behaviour in high speeds over 50 km/h. A larger mass has shown todepress the magnitude of lateral acceleration in wrong direction and a larger length of an axle is shown to depress the yaw-rate. The result also displays that a RWS vehicle has a delay of the lateral acceleration compared to a FWS vehicle with approximately 0,1-0,2 seconds depending on mass, velocity and length of axle. The test of response indicates that this delay contributes to the delay of the lateral movement of the vehicle the first second for speeds between 10-90 km/h, but after only 1,5 seconds further thelateral movement is twice the value for speeds 50-90km/h. The conclusion is that vehicle doesn’t have RWS due to the delay in response in the beginning and the very larger lateral movement after only seconds later, which makes the vehicle hard to control.
Aspelin, Björn. "Sjöbuss." Thesis, Konstfack, Industridesign, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-862.
Full textBlomqvist, Per, and Adrian Heijkenskjöld. "Mätning av stötar och vibrationer ombord snabbgående båtar : En undersökning av accelerometerförsett njurbälte som mätmetod." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297464.
Full textLiland, John. "Hur svårt kan de va? Skrota inte båtar som flyter : Ett undersökande av möjligheten att bevara båtar på väg att skrotas som en reaktion av restriktionerna i resandet 2020 och för ett framtida hållbart semestrande." Thesis, Konstfack, Industridesign, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-7755.
Full textStarfelt, Mårten. "Läsning utan eftertanke båtar föga : En undersökning av läsning och digital text i två digitala läromedel." Thesis, Karlstads universitet, Institutionen för språk, litteratur och interkultur (from 2013), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-78497.
Full textThe aim of this study is to investigate how two digital learning materials (Digilär svenska 1 för gymnasiet and Metafor 1) presents reading and reading of digital texts. The study is propelled by three questions which circles around the learning materials content, the design and perspectives of the assignments and how well the potential of the digital media is being utilized. The study has shown, in summary, that Digilär does not have an explicit focus on digital texts even though digital texts, by nature, appears in the learning material. This is problematic due to the fact that research shows that digital texts are harder to read than analogue texts from the perspective of reading comprehension. Research also shows that the difficulty there is in reading digital texts can be solved by the use of reading strategies. Metafor 1, on the other hand, has a special subject dedicated to digital texts and the reading of digital texts. The assignments, which are aimed towards reading of digital texts, does have reading strategies represented. The conclusion is therefore that Metafor 1 meets the demands of the previous research in a much for explicit and clear-cut way than Digilär. Digilär does not bring the subject of reading digital texts to light even closely as explicit as Metafor 1.
Norlin, Olivia. "Båtvarvsbyggnad på Beckholmen." Thesis, KTH, Arkitektur, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122596.
Full textThe new shipyard building on Beckholmen, Stockholm, is situated on the island’s western side. Within the building large ships will be repaired throughout the year. The boats are taken out of the water into the building’s large hall with the help of a shiplift. Workshops are located on each side of the hall, for the repair of the ships’ different parts. Overhead cranes run along each of the different workshops and the hall to be able to lift the parts between the ships and the reparation spaces. A large storage room and a recycling room are found at the back of the building. My suggestion for the new shipyard building is inspired by classical industrial architecture. It is constructed of steel columns, which the overhead cranes are mounted on. Braces support the columns and help resist the strong forces created by the movement of the cranes. The braces are emphasized in the building’s facade. The facades of the building are of a vivid turquoise colour, a contrast to the surrounding buildings’ facades. The brightly-coloured shipyard building will be visible from different locations in the center of Stockholm. The colour comes from verdigris copper. The large hall has two gates at the south end, through which the ships are transported. When the gates are open a lighter and warmer interior is revealed. The interior walls are constructed of silver-coloured corrugated metal sheets. The metal sheets reflect the sunlight coming through the windows, which helps create a light atmosphere on the inside of the building.
Johnsen, Jeffrey. "Produktframtagning för tyngdpunktsförflyttning i båtskrov." Thesis, Karlstads universitet, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-86027.
Full textNäslund, Sandra. "Textila material för utomhusmiljö : En undersökning med fokus på båtars dynor." Thesis, Linköpings universitet, Malmstens Linköpings universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166585.
Full textThis is an investigation of textile materials for outdoor environments with a particular focus on boat cushions. The ambition has been a survey of various conceivable materials for exposed environments and test of best sewing methods. Through analysis of available materials and knowledge of upholsterer inventory, supplemented by a historical research and my own tests, I found out following. A historical research showed that as long as recreational boats were accessible to the upper class only, it was about having the finest material and the best craftsmanship to show their wealth to friends and acquaintances. When the recreational boats entered many of the Swedish ordinary homes, it became partly more home-fixing and simple solutions. Whereupon "luxury leisure boats" have always maintained a high standard of fabric. An important red thread of all time has been the practicality and easy cleaning. After a closer research of contemporary adequate textile fibers, is synthetic fibers to preferable instead of regenerate fibers. But it is not only the textile fiber that controls the quality of the finished product. The quality of the fabric depends on the quality of the finished textiles, which it obtains during the manufacturing process. It includes for instance the fabrics composition, twisting and weaving techniques and impregnation. The market has a big variation of textiles, but only a few who are profiled against the market for outdoor environments are able to handle the outdoor conditions well. It is therefore important as a customer to purchase a high-quality textile for a long lifetime. The most common types of marine textile for boats are vinyl, acrylic or polyester fabric. There is not a fabric that stands up to all possible challenges, but there are several fabrics that are composed in such way that they can handle the conditions well for a long period of time. The lifetime limit is difficult to say, it depends completely on how the cushion is made (for example sewing technique and padding.) The environment has also an impact on the lifetime limit. Cleaning the cushions extends the lifetime limit. If it is possible it ́s preferable to bring the cushions inside or cover them with for example a chapel for protection from as much impact as possible. Aside from the fabric of the cushions, the upholsterer's knowledge and professional skills have a big impact and large contributing part of how ever the final product lives up to the expectations or not. The sewing technique, thread choice, zipper, velcro, buttons, padding is very important. Placement of seams is also very important. Common problems with cushions on boats is that water can get through the seams and water fill the padding. This can be prevented by sealing the seam by applying a water repellent to the seam. Single-stitch or keder with long stitching proved to be the most suitable sewing technique to reduce water leak. Non-iron plastic zipper is preferred and thread with polyester core and cotton outer layer as this thread combines the strength of the polyester and the sealing quality of the cotton. High density foam is recommended as padding material. For exposed environments where risk of water leaks exists are other materials more suitable, such as polyetherfilter that don’t absorb moisture.
Johansson, Harald. "”Båtnitar” : Analys och konservering av järnnitar från Birkas garnison." Thesis, Stockholm University, Department of Archaeology and Classical Studies, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1151.
Full textThe purpose of this paper is to analyse and discuss clinch-nails found at an excavation at terrace II in the Garrison of Birka, on the island of Björkö in Sweden. This type of clinch-nails is common in Viking age Sweden and is usually interpreted as coming from boats. The study will try to show that these types of nails could have been used in several kinds of wooden constructions. It will also show how the nails were made and what kinds of tools were used by the Viking smiths. The study has shown that this type of nails were used in several different types of wooden constructions such as boats, sleds, cart bodies, coffins, Birka's ramparts and buildings. Nothing confirms the use of rivets in Viking age buildings but the material from terrace II probably contains clinch-nails from the other categories. The largest portion of the clinch-nails comes from disused boats and from the ramparts surrounding Birka's hill fort Borg. The tools for making nails have not been found in the Birka Garrison.
Björn, Mimmi. "The Confi Concept : Utveckling av individanpassade bågar." Thesis, Mittuniversitetet, Institutionen för design, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-36615.
Full textAxelsson, Nils. "Dynamic Programming Algorithms for Semantic Dependency Parsing." Thesis, Linköpings universitet, Interaktiva och kognitiva system, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-138594.
Full textDependensparsning kan vara ett användbart verktyg för att få datorer att kunna läsa text. Kuhlmann och Jonsson kom 2015 fram till ett logiskt deduktionssystem som kan parsa till ickekorsande grafer med en asymptotisk tidskomplexitet O(n3), där "n" är meningens som parsas längd. Detta arbete utökar Kuhlmann och Jonssons deduktionssystem så att det kan introducera vissa korsande bågar, medan en asymptotisk tidskomplexitet O(n4) uppnås. För att tillåta deduktionssystemet att introducera korsande bågar, introduceras 15 nya logiska delgrafstyper, eller item. Dessa item-typer tillåter deduktionssystemet att introducera korsande bågar på ett sådant sätt att acyklicitet bibehålls. Antalet logiska inferensregler tags från Kuhlmanns och Jonssons 19 till 172, på grund av den större mängden kombinationer av de nu 20 item-typerna. Resultatet är en mindre ökning av täckning på testdata (ungefär 10 procentenheter, d v s från cirka 70% till 80%), och jämförbar placering med Kuhlmann och Jonsson enligt måtten från uppgift 18 från SemEval 2015. Härledningsunikhet kan inte garanteras på grund av hur bågar introduceras i det nya deduktionssystemet. Den utökade algoritmen, QAC, parsar till en svårdefinierad grafklass, som jämförs empiriskt med 1-endpoint-crossing-grafer och grafer med pagenumber 2 eller mindre. QAC:s grafklass har lägre täckning än båda dessa, och har ingen högre gräns i pagenumber eller antal korsningar. Slutsatsen är att det inte nödvändigtvis är optimalt att utöka ett mycket minimalt och specifikt deduktionssystem, och att det kan vara bättre att inleda processen med en specifik grafklass i åtanke. Dessutom föreslås flera alternativa metoder för att utöka Kuhlmann och Jonsson.