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1016 Uppsatser om Site productivity - Sida 23 av 68
Skogsbränsleuttag vid förstagallring och dess påverkan på beståndsutveckling : simulering i Heureka med olika skötselprogram
Stands where pre commercial thinning has been ignored or inadequate often tend to have high stem density and low average diameter when they reach heights of thinning. In such stands, it can often be expensive to do a conventional pulpwood harvest as a first thinning. This study investigates the development of the stands and the economic outcome of forest fuel extraction, or a combined harvest as alternatives to the ordinary pulpwood harvest. Simulations in Heureka StandWise were performed for two thin and dense stands, which were constructed by data from the Swedish National Forest Inventory. The simulations show that the extraction of forest fuel in first thinning at an early stage can provide higher net revenue compared to conventional pulpwood harvest at the same time or later.
Identifikation av produktionsstörningar och obalanser vid tillverkning av golvskenor
Our report procedure identification of instability and disturbance in an automatic manufacturing line of processing and assembling of chair sliding rails at Sapas manufacturing department in Vetlanda.To obtain a stabile ground we have mapped the material flow to receive a comprehensive view and to visualise connections.We have examined cycle times at different stations in purpose to identificate bottlenecks. The result of our examination showed that the bottleneck of the line was the brush station. This leads to that the expected bottlenecks identificated by Sapa gets a delay time and by that a longer cycle time.Interruptions has a clear negative influence at the line performance so we have also assemble data through the operators report list and compiled these in order to find out the interruptions effect on the line. The outcome during our assembled period was that the reported interruptions corresponded about 30 percent of the total available production time. This has a clear negative effect on the line productivity and efficiency as we have calculated in order to get the present status..
Landscape urbanism : from a methodological perspective and a conceptual framework
Landscape urbanism has for the last decade been a topic for debate among practitioners and theorists involved in forming the contemporary city. The advocates for landscape urbanism mean that traditional dichotomies like city and country are invalid to illustrate the contemporary urban realm. Rather, a new urban morphology has evolved, which calls for new methods and models when approaching the city. Landscape urbanism suggests a revaluation of landscape in order to develop these approaches. This paper sets out to map how this is addressed within landscape urbanism.
Attityder till implementering av precisionsodlingsteknik :
Different techniques for precision agriculture have been available during the last decade.
Some of them are more widely used than others. The main purpose of this thesis was to
investigate the different attitudes to precision agriculture that exists among farmers and
advisors in Sweden.
Eight advisors and sixteen farmers were asked for their opinion of a number of specific
techniques for precision agriculture, such as yield-mapping, precision liming, the Yara
Nitrogen Sensor and site-specific fertilization with phosphorous and potassium. They were
also asked to describe the way in which the counselling in Swedish agriculture is used and
also about it's importance for the adaptation of new techniques.
The high costs are mentioned to be one of the most important reasons why precision
agriculture hasn't been more widely spread. Several farmers refer to their farms as too small to bear the costs that come with the techniques. The individual interest for technique among the potential users plays an important role.
Förnyelse av hamnområde i Mollösund. Inspiration och underlag för utveckling av industritomt med fokus på turism och ett levande samhälle
Orust Kommun står inför arbetet med att förnya och utveckla ett industriområde vid hamnen i Mollösund. Målet är att bevara kulturarvet i den lilla fiskebyn samtidigt som man vill satsa på ett levande samhälle, den viktiga turistnäringen samt tillfredställa många målgrupper. Rapportens syfte är att föra en diskussion och därmed bidra med ett underlag till Orusts kommuns arbete och beslut för förändring av industritomten belägen i Mollösunds hamn. Detta genomförs genom en fallstudie där ett antal befintliga områden analyseras, vilka alla är relevanta för industriområdet i Mollösund. Diskussionen skall belysa olika typer av verksamheter som kan inhysas på industritomten och analysera vilka som är mer eller mindre lämpliga.Genom en kritiskt granskad litteraturstudie inhämtades bakgrundsinformation om Mollösund och turism för att förstå bakgrunden till Mollösunds identitet.
Varumärkesbyggande i kreativa näringar: en fallstudie på festivaler
The purpose of this thesis was to illuminate how festivals are building their brand. We aimed to investigate how festivals build their brand equity and how they use their web site as a brand-building tool. In order to understand the brand-building process within festivals, a case study was conducted based on interviews with three respondents from three different festivals. The study has shown that festivals are aware that the brand constitutes an important competitive advantage. They use both online and offline marketing tools in their brand building process.
Maskinstyrning
Examensarbete är en del i min utbildning, Bygg och anläggning på Luleå TekniskaUniversitet. Examensarbetet beskriver arbetsgången för montering av maskinstyrning och lite mer information om de olika delarna. Maskinstyrning är inte automatisk styrning av maskiner eller styrning på distans i detta sammanhang. Det är ett GPS mätinstrument för arbetsmaskiner som till exempel grävmaskin, hjullastare och hyvel. Det krävs en del montering och inställningar i datorn med programvaran 3D-MC.
Kaliumgödsling på torvmark - effekt på tillväxten hos planterade granar (Picea abies)
Peat lands are a great potential resource for increased forest growth in Sweden, there are approximately 6.5 million hectares of peat lands, whereof around 70% produce less wood than one m3sk/ha and year and are therefore classed as forest waste land. There are over 200 000 hectares of peat land that is already drained and wooded, and that may be suitable for fertilization. Forest production on peat soils usually requires drainage and fertilization. Dewatering requires ditching the area, so that the roots can have access to oxygen. Nitrogen is often abundant in the peat but other nutrients; especially potassium is in short supply. The purpose of this work was to examine the effects of potassium fertilization on the growth of spruces that were planted on drained peat land and how different amount of fertilizers affects the growth. Potassium deficiency is strongly growth inhibiting, since potassium is important for substance transport in the tree. Potassium is also important for the carbohydrate formation, and because increasing the sugar content of the cells constitutes a lower freezing temperature does potassium availability in the soil play a major role in the winter resistance of many species. Potassium is not found in any organic compounds in the tree, but is present in cell and tissue fluids. A fertilization trial was started in 1978 in Siljansfors Experimental Forest. The plots in the experiment were fertilized with different amounts of potassium and one plot was left without fertilization. All plots that were fertilized with potassium grew considerably better than the unfertilized plot. The difference in production between the unfertilized plot and the plot that received the most potassium was 7.2 m3sk/ha and year. The unfertilized plot can still be classified as waste land. The theoretical production capacity was estimated using a Swedish system for site quality estimation of wetlands after ditching (dikningsbonitering). The plot with most potassium produced after fertilizationaproximately in level with theoretical estimations. Key words: Peat land, Fertilization, Ditching, Growth, site quality..
Skogens produktionsvärden och dess betydelse för Sveriges ekonomi
The forest is characterized by many different values such as those related to forest productivity which are of a big importance for Swedish economy. History has proved that forest resources had helped the country in the transition from the agricultural to the industrial society. Today Swedish forest industry is among the strongest in Europe and significantly contributing to the Swedish export. The industry provides many direct and indirect job opportunities and is one of the biggest employers in the industry sector. It is also worth to notice that the forest can also generate an additional income for the owners, even if the forestry isn?t their primary income source.
Alternativ splicing och hur den förhåller sig till växters alternativa splicing
Alternativ splicing är en process som ger upphov till att olika mRNA-sekvenser bildas från en enda gen, vilket bidrar till en ökad proteindiversitet hos organismen. Olika mRNA-sekvenser kan uppstå eftersom att det förekommer olika varianter av alternativ splicing som även kan kombineras på flera olika sätt: cassette exon (inkludering/exkludering av exon), intron retention (intronet behålls), alternative 5´splice-site choice (olika 5´ splice sites kan väljas) och slutligen alternative 3´ splice-site choice (andra 3´ splice sites kan väljas). För att alternativ splicing ska äga rum i olika pre-mRNA måste den regleras av cis-reglerande element. De cis-reglerande elementen utgörs av fyra grupper: exonic splicing enhancers (ESE), exonic splicing silencers (ESS), intronic splicing enhancers (ISE) samt intronic splicing silencers (ISS). Som namnen förtäljer finns de antingen i exoner eller introner, där de interagerar med transagerande faktorer, SR-proteiner (aktiverare) eller hnRNPs (hämmare).
Hållbar katastrofturism - ur ett miljöperspektiv
This thesis is about catastrophe tourism and the sustainability of the tourism in an environmental perspective. The purpose is to see if there is any interest for that kind of tourism and to see if the people who have an interest or curiosity of it thinks about the environment when they are traveling. A quantitative survey was made on the internet and people on Facebook, Resedagboken.se and Reseforum.se had the chance to answer it. There is an interest of catastrophe tourism and a few have been to catastrophe sites or would like to visit. The conclusion of the thesis is that there is a possibility of a sustainable catastrophe tourism because most of those who answered that they had or wanted to visit a catastrophe site also thought about the environment and cleaning up after themselves..
Livet mellan husen : ett utvecklingsförslag för Disagården
The open air museum of Disagården is situated in the Old Uppsala parish,
Uppsala municipality, are projected to portray a double row village, before
the land enclosure, on the Uppsala plain during the 1860s and 1870s.
Disagården operates under the County Museum of Uppland and serves as an
exhibit of Uppland's farming culture during the late 19th century. However, an
open-air museum is a complex institution where many interests are linked
together. Disagården aims to simultaneously portray an historical
environment while offering broad public appeal.
The Disagården open air museum was inaugurated in 1931 and consists of
relocated buildings that together form three farm complexes "Gränbygården",
"Skuttungegården" and "Bärbygården".
The thesis explores how the close surroundings of a typical farm in
Uppland looked during the 1860s and 1870s. This historical depiction has then
been applied to Disagården in a development suggestion creating a
foundation from which Disagården can structure the close cultivation of the
different farms. The basis of the development program has primarily been
compiled through archival and literary studies but also through on-site visits
and interviews.
How did the concept of open air museums start and what were the ideas
behind the concept? Which external influences affected the situating of
cultivations and buildings? Which crops and species were present on the
farms in Uppland during the specified time period? What was the relation of
the different structures to each other? Which organizations had influences on
the farmer's household of the Uppland plain? The thesis attempts to clarify
the answers to these questions.
The influences affecting on the farmer's household in Uppland were
probably numerous.
Förutsättningar inför detaljplanearbetet - Hur påverkar detta processen?
The purpouse of this study is to find out how and if a Content Managment System (CMS) can benefit from applied User Experience Design (UX). A work project has been executed where a client wanted the students to create a user friendly CMS for adding content to a global hotel review site. A prototype of a CMS was created based on literature studies about UX and CMS. The prototype of the user friendly CMS was then tested through user tests and interviews with key users. After input from the key users the prototype was changed until the users were satisfied with it..
Nyttan av Web 2.0 i en CRM-kontext
Web 2.0 is a relatively new concept which has made significant progress on the Internet. More recently, corporations as well have begun to get use of the different types of applications that are assigned to the Web 2.0. Organizations are primarily interested in making use of Web 2.0 in two areas: inside the company to increase efficiency and productivity, and from the organization to the customer to improve revenue and customer satisfaction. We have chosen to take a closer look at this last area, as can be seen as a CRM context. Our interest is to investigate how such a context may change by implementing some kind of Web 2.0 technology.
På jakt efter dalanavellaven Umbilicaria subglabra samt klättringens påverkan på lav- och mossvegetationen på Ålandsklipporna utanför Uppsala :
In search of Umbilicaria subglabra
In Sweden Umbilicaria subglabra has its only known occurrence in Lybergsgnupens nature reserve in the county of Dalarna where it has been found only once in 1936. It was found on the east-facing rock spur, approximately 650 meters above sea-level. The lichen is now red-listed as Regionally Extinct (RE) in Sweden. The aim of this study was find U. subglabra.