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31 Uppsatser om Fyke nets - Sida 1 av 3

Vandring av vårlekande fisk och jämförelse av fångst mellan ryssja och strömöversiktsnät i Hammerstaån, Stockholms län

During the last two hundred years many wetlands and streams in Sweden have been lowered to provide land for agriculture and forestry. Some of the coastal wetlands and streams probably served as spawning sites for certain species of fish in the Baltic Sea, but the present situation is not well known. As standardized methods to monitor fish in running waters are carried out during late summer or autumn, there is a need for methods to sample spring-spawning fish in these streams.The aim of this study was to survey the lower kilometer stretch of Hammerstaån in Stockholm, to investigate the extent to which the stream is used by spring-spawning fish. Furthermore, the study aims to evaluate a new type of survey fishing gill net called strömöversiktsnät (SÖN). This was done by comparing the catch of fish by SÖN with that of Fyke nets.

Vandring av vårlekande fisk och jämförelse av fångst mellan ryssja och strömöversiktsnät i Hammerstaån, Stockholms län

During the last two hundred years many wetlands and streams in Sweden have been lowered to provide land for agriculture and forestry. Some of the coastal wetlands and streams probably served as spawning sites for certain species of fish in the Baltic Sea, but the present situation is not well known. As standardized methods to monitor fish in running waters are carried out during late summer or autumn, there is a need for methods to sample spring-spawning fish in these streams.The aim of this study was to survey the lower kilometer stretch of Hammerstaån in Stockholm, to investigate the extent to which the stream is used by spring-spawning fish. Furthermore, the study aims to evaluate a new type of survey fishing gill net calledströmöversiktsnät (SÖN). This was done by comparing the catch of fish by SÖN with that of Fyke nets.

Telias 4G i Umeå

This report presents the results of the tests of data rate and signal strength that I have conducted. The tests have been performed in the municipality of Arvidsjaur, Sweden. The report also contains the conclusions I have drawn from the results as well as an introduction to radio and the technology used in the nets that have been testedThe equipment used is:LG G2 cellphone used to test Telias 3GHuawei b593s-22 3G/4G router used to test Tele2s 3G/4GMobile Broadband Gateway R-90 used to test Net1s CDMAThe data rate has been tested with bredbandskollen (www.bredbandskollen.se). The signal strength(RSSI) has been read in the configuration menu of the broadband routers as well as in the cellphone.The conclussions drawn:Net1s net appears to be more used compared to its capacity than the other netsTele2s net has a high and even data rate where it?s signal strength is sufficient.

Hästens (Equus Caballus) ätbeteende då den för första gången får sin högiva beredd i ett slow-feednät

The horse's motivations to forage and eat are behaviors that horse owners should take into consideration when designing the horse's living environment. In today?s housing of horses, horses are often kept alone in boxes and paddocks and are fed with small amounts of energy-rich roughage. Problems that can arise with a shortened feeding-time and long periods of fasting are behavioral changes like stereotypic behaviors and an increased risk for ulcers. A solution to the short feeding-time is that you are feeding roughage in a small mesh hay net, or a so-called Slow-feed net.

Mätning av mobila datanät i Arvidsjaur

This report presents the results of the tests of data rate and signal strength that I have conducted. The tests have been performed in the municipality of Arvidsjaur, Sweden. The report also contains the conclusions I have drawn from the results as well as an introduction to radio and the technology used in the nets that have been testedThe equipment used is:LG G2 cellphone used to test Telias 3GHuawei b593s-22 3G/4G router used to test Tele2s 3G/4GMobile Broadband Gateway R-90 used to test Net1s CDMAThe data rate has been tested with bredbandskollen (www.bredbandskollen.se). The signal strength(RSSI) has been read in the configuration menu of the broadband routers as well as in the cellphone.The conclussions drawn:Net1s net appears to be more used compared to its capacity than the other netsTele2s net has a high and even data rate where it?s signal strength is sufficient.

Utfodring i finmaskiga hönät : hästens ättid och skötarens arbetsmiljö

Horses are by nature herbivores, specialized on grass, and graze during the main part of the day. The horse has neither changed this basic behaviour nor the function of gastro-intestinal tract, when the horse was domesticated by man. A horse on pasture has an even production of saliva and gastric acids. The buffering effect of the saliva makes the pH in the stomach above four throughout most of the day. With abnormal long breaks of eating, the pH may decrease, causing an increased risk of gastric ulcer.

Jämförelse av algoritmer för polygonisering utav volymetrisk data

Digitala spel har länge använt sig av terräng, det vanligaste sättet att lagra dessa terränger är med så kallade höjdkartor. Höjdkartor har en stor begränsning, de inte kan innehålla tunnlar.Denna rapport undersöker två alternativ till höjdkartor som arbetar med voxlar. Dessa två algoritmer är Marching Cubes (Lorensen & Cline, 1987) och Constrained Elastic Surface Nets (Gibson, 1998). Syftet med undersökningen är att evaluera dessa algoritmer med avseende på tidseffektivitet, minneseffektivitet och visuell korrekthet för att ta reda på vilken algoritm som öveträffar den andra med avseende på vilken aspekt.De utförda experimenten visade att Marching Cubes (Lorensen & Cline, 1987) var den mest tidseffektiva av de två, Constrained Elastic Surface Nets (Gibson, 1998) var mest minneseffektiv och Marching Cubes (Lorensen & Cline, 1987) var mest visuellt korrekt. Vidare forskning i ämnet skulle kunna göras på terränger som är för stora för enskilda modeller..

NetSök : Internetvägledning för referensbibliotekarier

Internet has made information more easy to get, but also more difficult to retrieve. There is a need for information retrieval systems that assure accurate, reliable and up to date information. Quite a number of both commercial and non commercial search services has been developed on the Internet. We have made a qualitative study of one for-pay product in particular, NetS k, produced by BTJ (Bibliotekstj nst), Lund. It is a database that contains collected, evaluated and classified links, and is especially developed to suit public librarians in Sweden.

DSP-baserat instrument för fjärrmätning av larmnät

Fält Elektronik AB i Kalix utvecklar och tillverkar bland annat larmsändare för fast uppkopplade larmnät. Fast uppkopplade larmnät används för att åstadkomma övervakad och säker överföring av larm och annan information mellan tekniska system för skydd och säkerhet. Larmöverföringen är ständigt övervakad från larmanläggningen ända fram till larmcentralen. Ett problem som idag finns i larmnät är att om man tappar kontakten med en larmsändare så vet man bara att man tappat kontakten, men inte varför. Därför vill man nu utveckla ett instrument som kan mäta och kontrollera vad som orsakar att uppkopplingen bryts t.ex.

Hur vet man vad kunder vill ha? : En studie över metoder för att ta reda på marknadsbehov inom produktutvecklingsföretag

Att använda produktutveckling som konkurrensfördel har ökat dramatiskt de senaste tio åren. Anledningen till det kan spåras till att på 2000-talet har det skett en förändring till en mer kunskapsbaserad ekonomi, vilket har lett till att det även har blivit en förändring i när innovation typiskt sker i samband med produktutveckling. Numera sker innovation typiskt genom ständig förändring genom att kunderna får säga vad de tycker, istället för att ske vid produktionsanläggningen. Med hjälp av informationen från kunderna kan företaget sedan producera produkter som motsvarar precis kundernas behov. Därför kommer det företag som har mest kundanpassade produkter att ha störst framgång.För att involvera kunder finns det olika metoder som företagen kan använda sig av, där de metoder som tidigt involverar kunderna i produktutvecklingsprocessen förespråkas.

Implementation av ett digitalt vågfilter på en SIC-struktur

When implementing syncronous filters with global clock nets, a substantial amount of energy is consumed in the clock net. Hence, it is interesting to reduce the size of the clock net, which in turn will reduce the total energy consumption. One way to acheive this, is to create a SIC (Structured Interfacing of Computational elements) since such a structure can be created without a global clock net. Our results show that a fifth order wavedigital filter with a sample rate of at least 10M samples/sec may be achieved.

Fisksamhället i Spexhultasjön, Nässjö

The lake Spexhultasjön is a moderate humic mesotrophic lake that is not acidified. The fish fauna was investigated by using a standard method for sampling freshwater fish with multi mesh gill nets. The fish fauna was diverse with perch, pike, tench, common whitefish, and roach. Perch and roach dominated. There were few pikes.

Åtta invandrares syn på vilka faktorer som har bidragit till deras känsla av välbefinnande

The subject of this study is factors that contribute to immigrants wellbeing in their new country. Our purpose was to describe and examine different factors that according to eight immigrants have contributed to their wellbeing in Sweden. Our main question was: Which factors have, according to our respondents, contributed to their wellbeing in Sweden.To achieve this, we have conducted qualitative interviews with eight different individuals. We also collected current documents and research related to the subject matter. We chose three different theoretical perspectives: Antonovsky´s Sense of coherence, Maslow´s Hierarchy of needs and Mischel´s CAPS-theory (cognitive-affective personality system) as models for the explanation of our analysis.The result of our survey was that we could detach six different categories which the respondents expressed had contributed to their wellbeing.

Nattaktivitet hos Afrikanska elefanter (Loxodonta africana) i fångenskap med olika kombinationer av miljöberikning

African elephants (Loxodonta Africana) are kept all over the world in different kinds of enclosures. The enclosures are however often unsuitable for the elephants. Research has shown that elephants are nocturnal animals. Therefore it is important to keep elephants occupied, for instance by using enrichments, also at the night. Five elephants were studied at Borås djurpark, four elephants in one room and one elephant, named Nyoka, in one room.

Surveillance of Geomyces destructans in Swedish bats and Bat Hibernacula

White-Nose Syndrome, WNS, is an emerging fungal disease in the Northern American bat population causing mass mortality in infected hibernacula. Geomyces destructans is a newly discovered psychrophilic fungus causing WNS but the pathogenesis and epidemiology of the disease is not yet fully clarified. Geomyces destructans has been found in Europe but has not been a cause of mass mortality there. This study is the first investigation done to see if G. destructans is present in Sweden.

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