A lot of mine waste rock and tailings arise from all mining processes and have to be stored in an appropriate way. Tailings are deposited in impoundments retained by tailings dams. The objective of tailings dams is to retain the slurry from the mining process and in that way prevent spill into the surroundings that might be harmful for the environment. Tailings dams are often constructed as staged embankments so that construction costs and demand of materials are spread more evenly over the period of deposition.The objective of this thesis has been to compile information about and evaluate events at Swedish tailings dams and also to develop a collective database for all Swedish mining companies for all tailings dams and all events that occur at tailings dams.Information about 60 events at Swedish tailings dams has been gathered and evaluated. The evaluation has been performed by comparison between and analysis of individual parameters and also by use of a multivariate statistical method called PLS.

The foremost objective of business organizations is to generate value for shareholders and to opt for strategies which optimize it. Hence it is of key concern for business leaders to appreciate how operations best are run to maximize value creation. This study explores how financial theory can reveal the link between one particular business strategy and the corresponding effect on shareholder wealth. The question in focus is whether construction companies can enhance their value creation by implementing shift-work to increase the weekly production rate. The thesis particularly targets apartment block projects in Sweden and has the construction company Peab AB as primary object of study.

Powdery mildew is a serious problem in both field and greenhouse cucumber production and can cause serious infection and radically reduced yields. Today, powdery mildew is the main disease in greenhouse produced cucumber. Disease control should preferably be both efficient and environmentally friendly, which is not easy to achieve at all times. Alternatives to chemical control of powdery mildews are biological control, physical control, non-fungicide control and cultivation of resistant or tolerant varieties. Biological control can be described as the suppression of damaging activities inflicted of a harmful organism by one or more other organisms, which are called antagonists or natural enemies. In Sweden, there are currently no registered biological control products available to control cucumber powdery mildew. The aim of this study was to investigate the effect of two biological control products in order to evaluate their ability to prevent or reduce powdery mildew infection to an acceptable level in greenhouse produced cucumber. In the experiments, different application regimes were also studied.

This thesis is a cultural theoretical case study of the art project (O)önskad samhällsförbättring.Via an analysis of the project, that is based on theories of power, resistance and contemporaryurban development, it examines the construction of urban space, its impact on public art including the ability of art to initiate evolvement of the urban public space.The last decades art has plaid an important role in what is called the creative city; to become attractive nodal points of the global economy, larger cities increasingly invest in art,culture and creative industry. Simultaneously the urban public space is limited to activitiesand expressions of art that are presumed to create economic growth. This introduces animpression of what is allowed and what is not allowed, possible and not possible, wished andnot wished which, as a consequence, evolves the public space. The events during the artproject and the reactions that followed enlightened these limitations. This tells a story, not only about the structuring process of the local urban space, but also important changes that are created as a simultaneous effect at different levels in society, as well locally as globally.

According to FSC (Forest Stewardship Council) shall at least a mean of 10 trees per hectare including riparian zones and other areas with high biological values be left in final felling. In addition large clear areas should not be created and all retained trees with high environmental value shall be spared. To leave trees in final felling means a lower cutting volume and hence a lower income from the cutting, but it also means that the production in the next generation becomes less because of competition. The aim of this study was to evaluate the effect retained trees have on the production in the new generation of forest, and to investigate if there is any way to lower this effect. The environmental care has also been estimated by the amount left in final felling.

Today more effective computer programs are in use, regarding design of geotechnicalconstructions. There is a risk that the theoretical background of the computerprograms, its limitations and the signification of the choice of soil parameter isforgotten when the computer programs become more user-friendly.This Master thesis deals with simulation and analysis regarding three computerprograms, FEM-design, with the addition Raft, Plaxis and BE-slab. Comparisons aremade for settlement and maximum moment in a concrete-plate. FEM-design is a threedimensional FEM-program, foremost created for design engineers. Plaxis is a twodimensional FEM-program, intended for geotechnical engineers while BE-Slab is aBoundary elements program in two dimensions that is mainly used by designengineers.

Frågor kring miljön är idag högst aktuella speciellt diskuteras alternativa energisystem. Olikabegränsade energiresurser debatteras samtidigt som en stor del av energin går till spill i formav bland annat värme.På flera sätt utvärderas olika alternativ för effektivisering och förnyelse av system föruppvärmning. För att se framåt mot en hållbar utvecklig genom att möta tillgång ochefterfrågan av energi behöver nya innovationer undersökas och utvärderas.Den här rapporten utreder nyttiggörande av lågtempererad spillvärme för uppvärmning. Irapporten jämförs tillgången på spillvärme från en Coop-butik, som är planerad på Backaplan,med efterfrågan på uppvärmning och tappvarmvatten i bostäder i närområdet. Dessa skullekunna sammankopplas i ett så kallat närvärmesystem.Spillvärmen från Coop skulle inte kunna täcka hela värmebehovet, dels effektmässigt och delstemperaturmässigt, så systemet behöver kompletteras.

Talented and committed employees are important resources for a company?s competitiveness. With the escalating competition for competent employees, a strong employer brand has come to play an increasingly important role as a means of attracting employees with a desirable profile. In this study, brand theory is applied to the results of a quantitative study of students? evaluation of an attractive employer, in order to identify the factors which explain why certain employers are perceived as more attractive than others.

Nuclear power plants existences have been well debated since the 70s (Swedish radiation safety authority, 2014). Accidents, risk and presence connected to nuclear power plants have been part of many studies around the world. Recent studies have shown a connection between prices of houses and the distance and presence of nuclear power plant in a surronding area of the house. This paper uses Hedonic price modelling to investigate the willingness to pay for an increased distance to the Swedish nuclear power plant, Forsmark. For the dependent variable selling price was used and the independent variables were number of rooms, living area, other area, lot size, selling year, building year and distance to Forsmark.

This thesis compares four relevance feedback methods. The Rocchio and Ide dec-hi algorithms for the vector space model and the binary independence model and Okapi BM25 within the probabilistic framework. This is done in a custom-made Information Retrieval system utilizing a collection containing 131 896 LA-Times articles which is part of the TREC ad-hoc collection. The methods are compared on two grounds, using only the relevance information from the 20 highest ranked documents from an initial search and also by using all available relevance information. Although a significant effect of choice of method could be found on the first ground, post-hoc analysis could not determine any statistically significant differences between the methods where Rocchio, Ide dec-hi and Okapi BM25 performed equivalent.

Frågor kring miljön är idag högst aktuella speciellt diskuteras alternativa energisystem. Olikabegränsade energiresurser debatteras samtidigt som en stor del av energin går till spill i formav bland annat värme.På flera sätt utvärderas olika alternativ för effektivisering och förnyelse av system föruppvärmning. För att se framåt mot en hållbar utvecklig genom att möta tillgång ochefterfrågan av energi behöver nya innovationer undersökas och utvärderas.Den här rapporten utreder nyttiggörande av lågtempererad spillvärme för uppvärmning. Irapporten jämförs tillgången på spillvärme från en Coop-butik, som är planerad på Backaplan,med efterfrågan på uppvärmning och tappvarmvatten i bostäder i närområdet. Dessa skullekunna sammankopplas i ett så kallat närvärmesystem.Spillvärmen från Coop skulle inte kunna täcka hela värmebehovet, dels effektmässigt och delstemperaturmässigt, så systemet behöver kompletteras.

The Swedish Warmblood riding horse is a popular horse for sport in Sweden, and the breeding goal is to produce competitive horses in both show jumping and dressage. The breed has its origin in native Swedish cavalry horses but has been highly influenced by foreign stallions throughout the years. Breeding values are estimated based on the results from young horse field test, which are held for 3- or 4-year old horses, and competition data. The young horse field tests are highly correlated with later performances in competition. The total proportion of horses with own observations to include in the genetic evaluation are slightly under 50 %, and in most cases their pedigrees are known.

Purpose:mental illness and the effect it has on individuals social network and relationships, and vice versa.The purpose of this study is to shed light on the rarely mentioned subject of severe Method:analysis was performed on a total of 15 interviews, which consists of three individuals with severe mental illness. The focus of the study was the subjects? description of the social network, excluding clinicians and other professionals.This study is inspired and conducted in a Grounded Theory manner. A secondaryFindings:may it be with specific individuals or groups. They describe the importance of surrounding themselves with people who do not judge them and it is through them they get validated.Places have been emphasised as having special meaning for the social interaction and overall wellbeing for the subjects.There is active actions for social interactions/relationships taken by the subjects,Conclusion:their social network.

The aim of my study is to investigate if and in that case how the writing process and texts written by students in the upper secondary school are affected by the writing tool; does it matter if they write their texts on a computer or by longhand? Another objective is to compare such an effect with the findings of previous studies performed on earlier generations of writers. The first part of my study was a survey. It showed that two thirds of the 67 students participating thought that they would have written better texts in the national writing test if they had been able to use computers. In the second part of the study each of the fourteen participants wrote one text on computer and another by hand.

Previous studies have shown that economic sanctions have adverse effects on the level of human rights in sanctioned countries. The focus of research on the effects in sanctioned countries has left the question of whether economic sanctions can have a regional effect on human rights levels in countries not sanctioned in the same region. Therefore, this essay has sought to investigate if economic sanctions aimed at an individual state have a regional effect on the level of human rights in countries not sanctioned within the same region. A previous study found that economic sanctions in Latin America positively affected the level of human rights in non-sanctioned countries within the same region. This essay has examined whether the same result can be found in a region with a different level of democracy.