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1010 Uppsatser om Random Forest - Sida 41 av 68

Diskursanalys på den Etiopiska regeringens nationala handlingsplan om bekämpning av ökenspridning

In this paper discourse analysis on the Ethiopian National Action Program (NAP) to combat desertification is made. The aim is to describe how the overall image/picture of desertification, its causes, and effects and of possible solutions are presented in the NAP. The result of this analysis shows that the main cause of desertification is human activities mainly due to the poorly developed socio-economic situation in the dryland areas. It is indicated that an excessive dependency of the rural population on the natural resources, particularly land, is the major cause of land degradation and this deterioration of land is said to have been caused by the rapid population growth, overgrazing, forest clearing as well as past government and institutional failures. In addition it is indicated that the effect of desertification usually involves ecological changes that sap land of its ability to sustain agriculture and human habitation, therefore the most serious threat to human welfare.

Trädföryngring i låga gropar uppkomna vid brand i boreal naturskog :

This study was conducted in the "Kåtaberget" forest reserve in Västerbotten in the summer of 1999. In the summer of 1995, a prescribed burning was performed in the reserve. In some places where coarse dry woody debris (logs and stumps) was present, the fire consumed the wood, as well as parts of the humus layer, creating deep-burned patches. The low intensity ground fire also created dead woody debris by burning off living trees with open fire scars, as well as standing dead trees. In this study, the post-fire tree seedling establishment was examined, with special attention given to the former presence of woody debris. The study also includes a survey of the areal extent of deep-burned patches, as well as an examination of tree seedling establishment in these patches, compared to other burnt ground.

Växelkursprognoser för 2000-talet

Titel: Växelkursprognoser för 2000-talet Ämne/kurs: NEKK01, Examensarbete C, 15 högskolepoäng Författare: Kenth Hedberg Handledare: Thomas Elger och Fredrik NG Andersson Nyckelord: Sverige, nominella växelkurser, prognoser, UIP Syfte: Syftet med uppsatsen är att fylla tomrummet av att det bara finns ettfåtal svenska studier för 2000-talet. Uppsatsen kommer att belysa hurden nominella växelkursen ska prognostiseras för att matcha defaktiska värdena på bästa sätt. Metod: Tillvägagångssättet för denna uppsats är att skapa prognoser utifråntre olika prognosmetoder som sedan jämförs med de faktiska värdenaav den nominella växelkursen. Det bestäms sedan utifrån treutvärderingskriterierna vilken metod som därefter ger det bästautfallet. Slutsats: Visar att AR(1) och AR(1) med ränta prognostiserar bättre än randomwalk med en kortsiktig prognoshorisont.

Ett träd för ett annat

This project is a collaboration with Ett Klick för Skogen, a foundation that buys and preserves endangered forests in Sweden. There are several ways of helping the foundation, e.g. buy a tree and for this the buyer obtains a symbolic diploma. Many organisations uses this method to collect money and for me the lack of a thorough expressions are consistent. The objective with this project has been to renew these diplomas for Ett Klick för Skogen and in the long run increase the collections and preservation of endangered forests in Sweden.The idea has been to vivify hardwood trees in a new and rather poetic than pedagogic manner.

Hägn i skogsbruket :

This survey was made during the autumn of 2002 and the beginning of 2003, on commission from the National Board of Forestry. The purpose with the survey was to gather experience and knowledge in the organisation about fencing and this was made through interviews. The ambition was also to get knowledge from people outside the organisation that have great experience of forestry and fencing. The interviews were based on questions that have been composed by the author with help from the supervisors. The questions were the same to both the personal from the National Board of Forestry and to the foresters. Interviews were also made with private landowners, gamekeepers, game researcher, the County Administrative Board, the National Road Administration, pole and net retailers and contractors. The target group for this work is the National Board of Forestry to be forwarded to persons interested in forestry with the ambition to spread knowledge about how to prevent damage on the forest by browsing animals. The deer populations are big in the south of Sweden and growing populations have increased the damage on plantations of broadleaves of the most species.

Bibliotekariers och ungdomars bild av sociala medier En kvalitativ studie av bilden av sociala medier hos bibliotekarier och ungdomar, och hur man kan förbättra bibliotekarieprofessionens förmåga att förmedla sig själv inom ett digitalt rum

Social media have become a bigger and bigger aspect of daily life for many ages and especially within the youth culture growing from digital interactions. At the same time libraries seems eager to use this medium to reach out to the youth to inform and to educate. But do we know enough about how these two groups? views each other to be effective at this work? And is it even something that is wanted? What?s the image of social media from their point of view?The goal of this study is to investigate the image of social media from the point of view of two groups, librarians and youth. The study is based on a qualitative approach with a random selection of candidates.

Inverkan av nederbörd, temperatur och frost på årsringens egenskaper hos boreal tall (Pinus sylvestris L.) :

The wide distribution range of our boreal pine (Pinus sylvestris L.) provides a great variation in growing conditions and climate/weather factors that influence the wood development of the trees. A great number of extensive studies have been conducted over the years in order to clarify growth trends of this and other species over more or less wide-ranging areas. In this thesis effects of weather factors were instead compared between different forest stands from the about same geographical location. The effects of precipitation, temperature and frost on the year ring characteristics of pine were studied in the research forest of Svartberget Vindeln, in northern Sweden. The stands differed in site index and silvicultural treatment; fertile ? high stem density, fertile ? low stem density, poor ? high stem density and poor ? low stem density.

Digitala kommunikationer mellan VIDA och deras leverantörer

The Swedish forest industry has put a lot of resources in the development of digital communications in hopes of improving collaboration with suppliers. The purpose of this study was to investigate whether VIDA would benefit from using digital communication with suppliers. The survey was conducted as a questionnaire study among the company?s staff and its suppliers. The result indicated needs and interests to use digital communications in both groups. Young suppliers and suppliers on a distance showed the most interest in using digital communication. In terms of using these digital communications, the staffs and suppliers were most interested in information regarding transaction and forestmanagement plans.

Merkostnader med vinterväghållning för Grot-transporter orsakade av väglagring.

Fuel wood is currently the third largest assortment from the forest in Sweden after pulpwood and lumber. Branches and tops i.e. logging residues are one of the assortments of fuel wood which is a common by-product after harvesting nowadays. The way to utilize, disintegrate and transport the logging residues varies between northern and southern Sweden. Branches and tops are collected throughout the year at appropriate stands, but are consumed mainly wintertime.

Utvinning av volatil-data : En jämförelse av olika verktygs påverkan på Windows XP och 7 vid en volatil-data-utvinning

Examensarbetet går ut på att utreda vad verktyg vid volatil-data-utvinning (Reeve & Shipley, 2006) orsakar för förändringar på ett datasystem. Volatil-data är information som försvinner när datasystemet stängs av och kan vara nödvändig t.ex. när man försöker läsa en krypterad hårddisk, då krypteringsnyckeln (Casey, et al., 2011) kan finnas i (Random Access Memory) RAM-minnet som är volatilt. I IT-brottslighetens barndom utvecklades (Brown, 2009) metoder för att påverkan på ett datasystem vid ett beslag skulle bli så liten som möjligt. Detta gjordes för att beviset man får från datasystemet skulle hålla i en rättgång och gick ofta ut på att slå av strömmen på datasystemet.

Undersökning av självspridning av contortatallen i norra Sverige

Over the past 40 years 600 000 ha of lodgepole pine (Pinus contorta ssp. latifolia (Engelm.) Critchf.) has been planted in Sweden (280 000 ha on SCA's forest land alone which represents about 15% of the company's total forest land area). In the early 70's SCA situated a number of experimental stands in order to investigate different aspects of the exotic tree, primarily growth rate. To be able to compare the two species plots with scots pine (Pinus sylvestris L.), this species was also planted at the same time and under the same conditions. A number of questions should always be raised when exotic species are introduced in an ecosystem. Invasiveness, the pathogen situation and purely ethical issues should be discussed.

På uppdrag av Allah - En studie av legitimiteten i den saudiarabiska statsapparaten

Since 2003 Saudi Arabia is under attack from domestic Al Qaida-cells which, by random shootings of westerners and bombings of compounds and official state buildings, is trying to challenge the stability of the royal regime. According to Al Qaida, the Royal family is attacked because of their friendly relations to the US and for not implementing Islam in the Saudi society as profound as they ought to. Political analyst finds it obvious that the Islamic Al Qaida-cells by terrorism is trying to erode the stability in the kingdom.An important foundation for stability for any government is legitimacy. The aim of this thesis is to examine the royal legitimacy strategy in the state bureaucracy of Saudi Arabia. The question at issue is: how has the royal family constructed the civil, military and religious bureaucracies to maintain and promote stability and legitimacy?The thesis focuses on the on three different units within these three bureaucracies and it surveys the way they are staffed and organized to strengthen and maintain legitimacy for the royal family.

GIS-modellering av habitat för vitryggig hackspett (Dendrocopos leucotos) som hjälpmedel i naturvårdsplanering på landskapsnivå :

The white-backed woodpecker is a forest bird being critically endangered in Sweden. The species is dependent on older forests rich in deciduous trees and dead wood. The main problem for the survival of this species is present shortage of habitat. Conservation work on this umbrella species is at present focused on finding remaining or emerging habitat networks. Large areas are scrutinized in search for suitable habitats to be protected or managed for the species sake.

Skottbetning på granplantor i Kolmården : omfattning och påverkande faktorer

In the Kolmården area, northeast of Norrköping in south-central Sweden, it was discovered that shoots of spruce Picea abies, plants to a seemingly large extent had been browsed by deer. The area inhabits a dense red deer population, alongside with moose and roe deer, and red deer is thus suspected to cause the damage. The main purposes of this study are, however, to estimate the extent of the shoot-damage and to investigate what factors that may affect the browsing of shoots. For each stand information was recorded about the age of the plants, area for the stand, height over the sea for the stand, site productivity, type of plants and stand-history. The study was done in three areas: Simonstorp, Stavsjö and Valinge. At Simonstorp and Stavsjö, respectively, 10 stands were chosen for study and on Valinge six stands. In each stand, 10 plots were sampled.

Enkätundersökning hos markägare inom SCA Skog Jämtlands förvaltning

This report is a joint venture with SCA Skog AB in the Jämtland forest management area. The company is a major player in the timber market in northern Sweden, and also a large business globally with offices in over 100 countries. The purpose of the study was to find out how timber suppliers want feedback/follow-up after completion of timber business. To determine this, a questionnaire survey was sent out to 75 landowners who supplied the wood for the company during the past year. The questionnaire consisted of a total of 15 questions with the opportunity to comment on certain issues.

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