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114 Uppsatser om Floating wetlands - Sida 5 av 8
Servostyrning med binaural ljudlokalisering
People are usually directed towards each other in conversations, to make it easier to hear what is being said. Algorithms for voice and speech recognition works in a similar way, regarding the microphone direction towards the sound source. In this thesis in electronics has therefore a servo control with binaural sound localization been implemented on a microcontroller connected to two microphones.When people perceive sound, the brain can estimate the sound source direction by comparing the time taken by the sound reaching one ear to the other [1]. The difference in time is called the interaural time difference, and can be calculated using various techniques. An exploratory comparison between the techniques cross-correlation and cross-spectrum analysis was carried out before implementation.
Utredning av undervattensbastu
Nordic Marine Sauna AB has, since 2005, designed, manufactured and sold floating saunas. Theproduct are characterised by a well thought thru and appealing design and its high quality. Thecompany is now intending to open a new business area by starting a subsidiary, NordicSubmarine Sauna AB, which will design submerged saunas. The expected customers are leisureand conference centres as well as customers that seek an experience out of the ordinary.Due to the products technical complexity a master thesis was adverted. The task was to do aninvestigation whether such a product is technically viable.The job involved research of existing products and constructions material as well as designingthe product with CAD and FEM-programs.
Modeller för restidsuppskattning baserat på Floating Car Data
I storstadsregionerna blir trafikläget allt mer ansträngt för vart år som går. Inflyttningen fortsätter i oförändrad takt och fler människor måste försöka samsas om samma utrymme. Situationen på vägarna börjar bli ohållbar och det måste till att dessa problem löses snart för att utvecklingen i regionerna inte ska stagnera. Möjligheter för ytterligare utbyignationer finns dock i en begränsad grad och man måste börja se till andra lösningar. Inom området för intelligenta transportsystem(ITS) erbjuds många nya tillämpningar där man med ny teknik försöker hitta lösningar till dagens trafikproblem.
Projektering av vindkraftspark i Juddhult, Småland
The aim with this study was to collect fundamental information, and to plan, a windpower farm in Juddhult , Småland in southern Sweden. The goal is to collect the bestavailable projecting planning support. The pieces of this projecting planning supportthat will be presented is; Environmental Consequence Description (MKB), productioncalculations, comparisons between different plant types, economic calculations, evaluatethe economy and give some farm design suggestions. The imagined wind farm will belocated in forest environment and which may cause a number of new problems. Specialinterest that will be affected, where special consideration because of the forestenvironmental is requested is, hunting, wetlands, ancient monuments and windturbulence.
Rosenlunds bankar : Erosion och förändring sedan 1960
During the 1960´s and 1970´s the number of grey seals in the Baltic Sea was decreasing rapidly, mostly due to hunting and toxic substances like DDT and PCB. When hunting became less intense and toxic substances decreased in the environment the grey seal population started to increase. Today grey seals are found common in the Baltic Sea and have started to become a big treat and a problem to the fishing industry. The grey seal destroys and enters fishing traps and consumes large quantities of the fish that have been caught.The knowledge of the grey seal, like abundance and food preferences, is today limited. It is also important to define the position of the grey seal in the ecosystem in the Baltic Sea and to be able to predict changes that could occur if the population would rapidly decrease or increase.
Ett vattendrags väg genom tid och landskap : Höje å
Water is a vital element and also enriches the experience of landscapes. It is naturally in constant movement and change but also exposed to the hands of man. In this paper two stretches of water is described through landscape and time in correlation between development and the experience of the watercourse Höje-å in the rural parts of southern Sweden. The intention is to investigate how Höje-å has changed over time and also how it is experienced in the surrounding landscape. With the help of literary studies the history of Höje-å have been described and through the course of field-studies the experience of two different areas along the watercourse.The biggest changes of Höje-å and its surrounding area have taken part during the last two centuries.
"Barnens bästa". En poststrukturalistisk studie av debatten om en individualiserad föräldraförsäkring.
The thesis explores the meaning of the concept "children's best" in relation to the social Swedish parental insurance debate from a post-structuralist view. The main material has been taken from daily news papers and the methodological as well as theoretical basis is provided for by Laclau & Mouffes discourse theory. In particular has the concept "empty signifiers" been of use when investigating "children's best" as a strong argument on both the "pro" and "against" sides of the debate of an individualized parental insurance. The theoretic purpose of the thesis is also to examine the poststructuralist/feminist dilemma in order to approach a more pragmatic and useful model of the two combined provided by Alcoff and Fraser. One conclusion is that "children's best" may never have an objective answer and will be a changing concept in time, ideology preference and discoursive field.
Konstruktion av Industriellt Vibrationsmätningssystem med signalbehandling baserad på Digitala Vågfilter av Lattice-struktur
In this bachelor thesis a complete prototype of an industrial vibration measurement platform has been developed. By measuring a number of variables such as acceleration, temperature and speed conclusions can be drawn on machinery health. The aim is to evaluate hardware and software solutions for a possible future product. Based on a requirement specification a proper hardware design has be developed. The hardware consists of a four-layer PCB with an ARM Cortex-M3 microcontroller and about 250 other components. The PCB was designed, assembled, tested and finally housed in a box.
Reading space. Möbel för läsning till Göteborgs nya stadsbibliotek
Reading spaceFurniture for reading for the new city library of GöteborgThe main purpose of my project has been to inspire people to read books at the library. I wanted to create something very site specific and chose a room on the second floor of the new city library to work with. To be able to relax, feel inspired and to concentrate on reading, the visitors of the library need to experience a sense of security. My solution to the different conditions or problems in the room and the needs I identified is a seat hanging inside a frame. When sitting down in the seat, the frame is low enough to see over but it is still experienced as a private spatiality.
Batch flow behandling och kontinuerligt flöde av lakvatten i en rotzonsanläggning : En jämförande studie i pilotskala
This report deals with the performance of a batch flow treatment of landfillleachate compared with a continuous flow system. The parameters in focus were total Kjeldahl nitrogen (TKN), BOD5 and COD. The pilot-scale experiment used eight barrels with a volume of 150 liters. Each barrel was constructed differently concerning its flow, its bed material grain size and its presence of plants or not. Four of the barrels worked in batch mode, thus four in continuous flow mode.
Försöksmetod för automatisering av kvalitetssäkring av SKB
Within all industries, there is a change in working time required; this also includes the construction sector. However, the way construction sectors are differentiated is by not having been given the opportunity to be practiced or tested. The aim of this thesis that we have done in collaboration with the Concrete Industry was to investigate the possibility of developing an automated method for quality assurance of SKB at the site. The idea is to make the O-funnel to be more utilized and therefore ensuring that the appropriate concrete quality is provided which eventually would lead to a better development in the production process.The project has involved theoretical work and laboratory experiments. The theoretical work gave us a good foundation at the beginning of the project. After gathering the information and material, the laboratory experiments began by SCC in their laboratory in Hammarby. The collected data from the various laboratory tests formed the foundation for trying to relate measurements for consistency of SCC with each other and therefore find out how measurements from O-funnel varies with different concrete mixtures.
Förutsättningar för återintroduktion av stora gräsätare i Sverige
Biodiversity is under threat in Sweden and many species are on the brink of extinction. This is mainly due to the large-scale drainage projects during the 19th and 20th century and the increasingly intensive land use in agriculture and forestry. The intensive land use with sharply defined boundaries between the production units has in many cases led to either overgrazing or overgrowing. As a result many species have been pushed back to "leftover" habitats like shooting ranges, power line corridors, roadsides, dumps, embankments and other similar areas. Therefore the question has been raised, wether or not it is needed to re-introduce large herbivores into the wild in order to maintain the biodiversity that is related to the extensive land use.This study has been conducted as a literature review and will focus on the European bison?s (Bison bonasus) impact on other species and biodiversity; conditions for reintroducing large herbivores in Sweden are also discussed.Free roaming populations of large herbivores have a positive impact on plants, insects and many other groups of organisms.
Spawning site selection of brown trout in habitat restored streams
During the timber floating era, most of Sweden?s watercourses were altered. This decreased the amount of available spawning habitats for salmonids, and hence had a negative effect on the riverine brown trout (Salmo trutta) populations. Reconstruction of spawning grounds is today a common measure in restoration of altered streams in Sweden. However, very little evaluation of the effectiveness of these reconstructed spawning grounds exists.
För Sverige - i tiden : En analys av Sveriges kung Carl XVI Gustafs uttalanden och befogenheter i början av 2000-talet
The purpose of this essay is to examinate the statements and verbal attributions of King CarlXVI Gustaf of Sweden in the early 2000?s. More exactly I?ve got two question formulations:Which statements does king Carl XVI Gustaf of Sweden make during the early 2000?s and are thesestatements, in line with the king?s attributions, non-political, party-politically neutral and noncontroversialaccording to different perspectives? Question number two is if there are to find anyboundaries for where the verbal attributions of Carl XVI Gustaf seem to go when he expresses himself inthe role as the king of Sweden and the chief of state in the early 2000?s. My procedure is to read theChristmas speeches of Carl XVI Gustaf during the 2000?s and use former beheld statements of Carl XVIGustaf to seek answers to the research questions.
Beror förekomsten av sjöfågel i anlagda våtmarker på våtmarkens ålder och area?
Av naturvårdsskäl är det viktigt att förstå vilken betydelse area och ålder på anlagda våtmarker har för artsammansättningen av sjöfåglar. I Linköpings kommun har man sedan 2004 anlagt ett flertal våtmarker och dessa har lockat bland annat den rödlistade arten svarthakedopping, Podiceps auritus, i stor mängd. Våtmarker är viktiga för fågellivet av många olika anledningar. Bland annat kan fåglarna söka skydd mot predatorer, häcka där eller rasta på sin väg mot häckningsplatser. Tidigare studier har bland annat visat att det finns fler fåglar i större våtmarker och att våtmarkens ålder spelar roll för vilka fågelarter som går att finna där.