The internet has fundamentally changed the way people communicate. With all the information that we are sharing over the internet, and the ways which companies want to use our information, the importance of keeping our private information secure has increased. This thesis aims to discover what attitudes internet users have against privacy on the internet, and what ? if anything ? they are doing to protect their personal privacy.We distributed an online survey to internet users in the Stockholm area, and conducted three interviews with persons in our target population. The results of these studies show that people in general are very aware of privacy concerns on the internet, but that their attitudes toward how important personal privacy on the internet is, differ somewhat..

Vattenfall Heat AB is a district heat provider in Drefviken, but has yet to establish any cooling systems in this area. This thesis examines the potential client base within the area today and over the coming 20 years. The feasibility of the most common cooling technologies is evaluated and results show a total potential for an installed capacity of 30 MW providing 50 GWh of cooling per year. One of the examined areas shows good prospect for heat driven absorption chillers during the summer months when the heat load is limited..

It is important to construct or recreate different types of wetlands and study their retention of nutrients, since knowledge of their effectiveness in this matter is poor. In 2003 a wetland was constructed on an old meadow on the western shore of Lake Bornsjön in central Sweden. The main purpose of the wetland was to reduce the amount of phosphorus entering the lake, which is the back-up water supply for Stockholm when the city cannot obtain water from Lake Mälaren. Large areas around Lake Bornsjön consist of agricultural land and the nutrient concentrations in the inflows to the lake are usually relatively high (approx. 1 mg/l total nitrogen and 0.05-0.1 mg/l total phosphorus).

Stabilization of subgrade is an internationally common technique to improve the characteristics of a soft soil. Improving the stiffness and bearing capacity of the subgrade enables the pavement to be designed with reduced depths of subbase and basecourse aggregates. This makes the stabilization technique both economically and environmentally interesting. Both natural and stabilized soils have high inherent property variability that should be considered when the characteristic value is derived. By analyzing the spatial variability in stabilized and natural subgrades it is possible get the parameters needed for reliability?based modeling of soil properties.

In this work, a method was developed and evaluated for calculating the life of welds under the influence of fatigue loads from a vibration environment. Typically, a shaker table is used for testing a component against vibration loads. The shaker table creates a vibration environment that is defined in the frequency domain by a power spectrum.Similarly, a virtual vibration table can be used to calculate the same type of load environment, which can then be used to calculate the expected lifetime. The benefit of this method is that it can be used in design, as well as in simulation of tests before physical verification tests are carried out.Today there are methods for calculating fatigue life of non-welded base material, but since many components contain welded joints, there is a need to apply this method to those types as well. To achieve this, the thesis combines two different areas, which together provide a method for fatigue assessment of welds using a virtual shaker table.The methodology is carried out by modeling the component, and its welded joints, in a finite element program.

The Homogeneous Charge Compression Ignition (HCCI) engine is promising in terms of lowNOx, low particulates and high efficiency. Due to its homogeneous charge, where thecombustion starts almost simultaneously from a number of points in the combustion chamber,only lean mixtures are possible to burn because of the resulting rapid combustion, which is muchfaster than the combustion in an SI-engine or a diesel engine. When richer mixtures are used thecombustion will start earlier and also be more violent.To phase the combustion later and lower the combustion speed, external cooled EGR can beused. The EGR-system used in this thesis uses a divided exhaust channel where one channel andits corresponding valve are used only for transporting EGR back to the intake system.Consequently the EGR-valve is connected to the intake pressure. This system is called Direct-EGR (D-EGR).Engine tests verified that the CA50 indeed is phased later when cooled EGR is used.

At the plant of Sandvik do Brasil in São Paulo there is a need for improving the transport of inserts between the plant building and the stock building. The idea is to install a system with an Automated Guided Vehicle (AGV) to take care of this transportation. The purpose of this report is to present which demands there are on the system and to find the best solution according to the demands.To conclude this work a study was made of the plant and the AGV technology was examined. Several providers of AGV solutions were contacted to get information about prices and detailed solutions.The conclusion was that the most suitable system for this application is a small unit load vehicle using inductive wire as guiding system..

Syftet med denna uppsats är att studera om Handelsbankens vinstandelsstiftelse Oktogonen ger upphov till motiverade anställda samt om Oktogonen och bankens låga personalomsättning har ett samband. Studien bygger på en fallstudie. Datainsamling har skett genom främst intervjuer och tidigare forskning i form av böcker och artiklar. Resultatet har visat att viktiga faktorer för att uppnå en låg personalomsättning inom banken bland annat är en decentraliserad organisation samt att anställda känner en trygghet till sin arbetsgivare. Oktogonen påverkar i begränsad utsträckning, dock främst äldre medarbetares rörlighet..

Detecting small signals with a comparator demands that the total voltage offset is lower than the actual signal. The total offset includes the voltage offset in the comparator and the voltage offset that is created by the offset currents that flows thru the load at the comparators input. The goal with this comparator that has been developed has been that it will have a total voltage offset at maximum 500 uV. The comparator does not need to be extremely fast or does not need to operate in a big frequency area. To have all the flexibility that is needed a full custom technique is used.

Photography has a big role in information sharing today. Especially in the hotel industry where it is the closest thing a customer can get to the product that is being sold. This study intends to find out how you can make use of rhetorical models and techniques of photography to enhance the communication skills of photos of hotel rooms. The main focus was to understand the difference between informative and emotional photographs and what consumers themselves focus on when choosing a hotel, and also how to use the collected information to create a larger buying interest through hotel photography. Using previous research work and quantitative data collection method, we have concluded that the informational and emotional photography methods have obvious differences but also many similarities, and are most effective used together and that the hotel consumer is more aware of the images influence then we assumed..

The last decades have shown increased nitrogen leeching from soil to water recipients. This is inSweden mainly due to over-manuring of agriculture land, effectivization of drainage systems and thedeclining extent of wetlands. The accumulated amount of nitrogen in water doesn?t only make itunsuitable for use by humans and cattle, but also decreases the biological diversity as well as negativelyaffect tourism and fish industry. In the most severe cases shallow maritime grounds can be completelydepleted of oxygen due to decomposition of the increased amount algae and plankton growth.This study have the aim to describe and quantify the nitrogen leeching from the Genevad drainagebasin, located in southern Halland, Sweden.

Many studies have been conducted of different types of business networks in recent years. Despite this, there is a lack of research concerning industry-transcending formal networks which are limited to a specific region. We have conducted a case study of Örebro Promotion, which is an industry-transcending network including over 500 members. Örebro is a medium-sized city in the middle of Sweden. The purpose with our study is to create an understanding of why enterprises choose to be a part of the network and what they feel is the gain of their membership.

In conventional viscose manufacturing, a large amount of carbondisulfide is consumed. This amount has to be decreased to keep the production cost down and to reduce the environmental impact. The purpose with this work was to show if an enzyme treatment of a dissolving pulp could increase the degree of substitution in the viscose so that the amount of carbon disulfide consumed in the process could be decreased. Previous investigations by Kvarnlöf (2007), Engström et.al. (2006) and Henriksson et.al.

Undersökningen ämnade se vilka fördelar och nackdelar som finns med animerade instruktioner jämfört med bildinstruktioner. För att göra detta så fick ett antal personer testa att vika origami med hjälp av antingen bildinstruktioner eller animerade instruktioner. Resultatet baserades på aspekterna tid, resultat samt utveckling. Undersökningen visade att animerade instruktioner hade mycket högre läsbarhet än bildinstruktioner men att det var svårt att se huruvida personer blev bättre på att vika origami..

In this bachelor thesis we have studied how interaction designers describe their profession. The research material is based on nine interviews with interaction designers. Questions cover areas such as interaction design tasks, what abilities they consider important, how they describe their relationship to the users, and cooperation with colleagues. We have analyzed the results using key terms such as habitus, field, and capital, as described by sociologist Pierre Bourdieu. The interviewees express humanistic views, and ask for more cooperation between interaction designers, as well as other people within the field of IT production.