Sökresultat:
1010 Uppsatser om Random Forest - Sida 49 av 68
Stubbskörd : från modell till verklighet
In the near future we need to reduce the greenhouse gas emissions significantly for the benefit of the environment around us. The European Union has de-manded a variety of climate and energy goals to be achieved by year 2020, the ?20-20-20? targets. With these aims, The European Union means that we must reduce our emissions from fossil fuels and instead increase our renewable fuels.
With stump harvest in the forest it?s possible to increase the use of renewable fuels and reduce our emissions from fossil fuels.
Lokalisering av sågverk i Västerbotten : en jämförelse mellan två alternativ
The number of sawmills in Sweden has decreased dramatically since the 1980s and the trend looks set to continue. The sawmills that are left instead becomes larger and are situated farther apart. In northern Sweden, they are concentrated along the coastline.In our study, we compared conditions for running a sawmill in inland areas and coastal areas and looked at what factors have the greatest impact on the profitability of the sawmill in northern Sweden.We chose to compare different locals conditions for a sawmill that only sawn pine timber and had an annual raw material requirements of 300 000 m3ub per year. By analyzing the kNN-data from the Swedish National Forest Inventory we have taken out the size of the timber volume at each site and its catchment. We have also looked at possible competitors in the areas that may affect the purchase price of the commodity.
Matematik i förskolan : Hur arbetar pedagoger med matematik utomhus på förskolor med olika pedagogiska inriktningar (traditionell, i ur och skur och Reggio Emilia)?
In this essay, I have interviewed four pedagogues from three preschools whit different pedagogical purposes. The purpose was to find out how they work with mathematics outdoor. In addition to interviews, I have conducted observations at each preschool. The different preschools are one traditional, one Reggio Emilia and one ?all weather? (Friluftsfrämjandet) preschool.
Undersökning av förekomst av okända virus hos svenska fjällrävar med encefalit :
The artic fox is under threat of extermination in Europe. The population decreased strongly at the beginning of the twentieth century because of intensive hunting. The artic fox was placed under protection by law 1928 in Sweden but despite this the population has had difficultly to recover. This can depend on several reasons, but the main threats are shortage of food and competition from the red fox. Along with Norway and Finland, Sweden has carried out a project called SEFALO (Saving the Endangered Fennoscandian Alopex lagopus), whose objectives were to prevent continued decreased populationnumbers and through, for example supplementary feeding, help the population to recover.
Portningsprocessen för en applikation - Att porta en applikation mellan två motorer
Kontext.
Det blir allt vanligare att konsumenter vill anva?nda spel och applikationer
pa? alla mo?jliga enheter och plattformar och ett sa?tt att go?ra det mo?jligt
a?r genom portning. Portning anva?nds fo?r att a?teranva?nda kod, objekt och
funktioner utan att beho?va go?ra om allt fra?n bo?rjan. Det blir da? effektivt
att uppdatera ett spel eller en applikation till en ny plattform, med lite tid
och inte sa? mycket extra planering.
Objektiv.
I studien letas ett sa?tt att go?ra en portning mellan tva? motorer, samt att
identifiera och analysera de sva?righeter som kan uppsta? i en flytt av ett
spel/applikation mellan tva? system.
En dold stämpling : - En kvalitativ studie om i vilken utsträckning ett utlänsklingande namn påverkar individens möjlighet att bli kallad till arbetsintervju
Background: Investors have several options to choose from when the goal is to achieve the highest yield at the lowest cost and risk. Stocks are a common investment options, but is also associated with risks. Portfolios are usually constructed with several different assets to reduce the unsystematic risk of investment. Funds are similar to composite stock portfolios, the big difference is that they dealt with in their entirety and investors may not affect the fund's content. The problem remains that whether you choose stocks or mutual funds there is still uncertainty as to how the future will unfold.
En vindkraftparks inverkan på Gävle Energis elnät
The effects from a planned wind farm on the grid utility Gävle Energis electrical grid have been studied. The wind farm is planned to be built in the forest 15 km north of Gävle and will have 23 turbines with rated power from 2 to 2.5 MW, resulting in a total installed power between 46 MW and 57.5 MW. The grid connection will be made at 70 kV. The aim of the analysis was to determine what effects the wind farm would have on the power grid in the form of electrical disturbances (flicker etc.), need for new investment and raised operational cost. To allow the connection of the wind farm technical solutions (new lines, power stations and grid reinforcements) have been constructed.
Grooming behaviour in the Red-tailed guenon
The behaviour of the red-tailed guenon (Cercopithecus ascanius) was studied over the course of nine days in the Sabaringo forest surrounding Kichwa Tembo Tented Camp near the Masai Mara National Reserve, Kenya. A focal animal instantaneous sampling method with a one minute interval was used to record the behaviours of the monkeys for approximately 12 hours a day, the day being divided into six shifts á two hours. This method has proven successful in earlier studies of red-tails in this area. The study subjects included both lactating and non-lactating females, juveniles and on some occasions the resident male.
The purpose of this study was to examine the grooming behaviour of red-tailed guenons and whether or not the occurrence of grooming varies depending on monkey type (lactating or non-lactating) and time of day.
Kan saffran f?rb?ttra HbA1c eller fasteglukos? En systematisk ?versikt bland vuxna diagnostiserade med Diabetes Mellitus typ 2.
Syfte: Syftet med denna ?versiktsartikel ?r att unders?ka det vetenskapliga underlaget kring
om ett intag av saffran kan f?rb?ttra HbA1c eller fasteglukos hos vuxna personer ? 18
?r diagnostiserade med Diabetes Mellitus typ 2, j?mf?rt med placebo.
Metod: Litteraturs?kningen genomf?rdes i databaserna PubMed och Scopus. S?kningen
gjordes den 240323 och innfattade ord som "saffron?,? crocus?, "diabetes mellitus,
type 2" och ?random*?. Artikelselektionen utf?rdes systematiskt med hj?lp av en
avgr?nsad fr?gest?llning samt inklusions- och exklusionkriterier, d?r
inklusionskriterier var RCT-studier, gjorda p? vuxna personer diagnosticerade med
Diabetes Mellitus typ 2 d?r interventionen skulle f? supplementering av saffran, och
kontrollen skulle f? placebo.
Utveckling av en diameterklassmodell för grandominerade bestånd i Sverige :
Growth models are very useful tools for forestry to predict growth and yield. With growth models and optimising tools you can manage forest stands in a way that maximize benefit and income. There are three major types of growth models. Stand models; stage structured models and single-tree models. The most advanced models give the most accurate forecasts.
pH-sensitivity in boreal streams ? the influence of landscape characteristics
The goal of the society to increase the proportion of renewable energy has led to an increased demand of bioenergy e.g. forest biomass. However, there are concerns that removal of biomass will lead to decreased base cation concentrations in the soils and acidification of streams. In order to find in which types of landscape removal of branches and tops could have such negative effects, this study aims to analyse the relations between pH-sensitivity and landscape variables in the Bothnia Bay water district. GIS and digital geographical data were used to analyse the landscape in subcatchments.
Potential för energiklippdrivare i Skåne : markägarintresse, råvarutillgång & ekonomi
As the Swedish governments long term goals include a reduction of fossil fuel dependency,
increasing pressure is placed upon energy companies to create and develop new solutions for renewable energy. The following case study was done in collaboration with the company
Sydved Energileveranser AB and one of their contractors, Enarssons Skogsentreprenad AB.
The objective of the study is to examine the bioenergy situation in region of Skåne and
evaluate the potential solutions in the region for a forest-fuel assortment, based on a bioenergy-cutting-system. As a part of this study I have compared ordinary manual cuttings done with a chain saw and cuttings made using the new ?bio- energy cutting system?. The cuttings made under both systems were tested in areas near agricultural fields or pasture land in order to maintain an open landscape.
Skogsägarföreningarnas utveckling efter krisen i slutet på 1970-talet : en analys av förändringar och trender
De första skogsägarföreningarna bildades under 1910- och 1920-talen för att i första hand främja en bättre skötsel av böndernas skogar. Under skogsägarföreningarnas snart hundraåriga historia har deras roll sedan förändrats. På grund av skogsindustrins starka ställning gentemot bönderna kom virkesförmedlingen ganska snart få en viktig roll i föreningarna.Det var dock först genom andra världskrigets brännvedshantering som skogsägarföreningarna kunde nå en större del av landets bönder och skogsägare. När skogsägarrörelsen växte och blev allt större kom tanken om att en egen industri i föreningarnas regi skulle förstärka skogsägarnas position på virkesmarknaden ytterligare. Brist på kapital gjorde dock att en industrisatsning drog ut på tiden.
Bevarande av hotade epifytiska lavar och vedsvampar i Norrbottens län : rödlistan som verktyg i praktisk naturvård
Många arter påverkas idag negativt av skogsbruket. Detta visar sig dels i ett växande antal arter på den svenska Rödlistan. I Norrbottens län är idag närmare 500 skogslevande arter rödlistade, och dessa är fördelade över flera olika organismgrupper. Det stora antalet rödlistade arter i skog innebär att det är svårt att direkt utifrån Rödlistan utforma effektiva naturvårdsåtgärder samt generell hänsyn inom skogsbruket. Genom att sammanställa och
strukturera information om de rödlistade arternas krav på livsmiljö och hotsituation kan Rödlistan som verktyg utvecklas.
Kan havregrynsgr?t till frukost p?verka aptiten hos vuxna? En systematisk litteratur?versikt
Syfte: Syftet med den h?r systematiska litteratur?versikten ?r att unders?ka det
befintliga vetenskapliga underlaget g?llande om havregrynsgr?t till frukost
p?verkar aptiten inf?r n?stkommande m?ltid hos vuxna.
Metod: I den h?r systematiska litteratur?versikten har en litteraturs?kning genomf?rts i
tv? olika databaser, Scopus och PubMed. Datum f?r litteraturs?kningen var
2023-01-25. PICOTSS formulerades f?r att systematiskt inkludera relevanta
artiklar.