The use of insecure networks -such as the Internet- to send and receive information has made the need for preventing unauthorised people reading it yet more important. One of the easiest way to do this is through public key cryptography. However, the problem with this solution is how to tie a specific public key to a certain subject. This is solved by letting a trusted third party issue a certificate that holds, as a minimum, the name of the subject and the subject's public key along with the issuer's digital signature on the information. The rules we make for issuing, revoking and verifying of certificates and the entities that are being used to do so are called PKI - Public Key Infrastructure.

Detta examensarbete behandlar PKI (Public Key Infrastructure) och säkerhet. Syftet med rapporten var att undersöka om ett systeminförande med PKI i ett företag, kunde förbättra vissa rutiner rörande IT-säkerhet. Vi ville se om rutinförändringen har medfört att arbetet har underlättats för den som utför rutinen. Vi har försökt skapa oss en helhetsbild av ämnesområdet genom litteraturstudier och fallstudie. Fallstudien har omfattat intervjuer med IT-säkerhetschef och en användare inom Västernorrlands läns landsting.

The purpose of this paper is to examine whether, and if so, how tourism effect the construction of a new city district with a stadium in focus. The study is based on a case study of Swedbank Arena and Arenastaden as nearby area. There has been an interest from the writers to study Swedbank Arena and Arenastaden, as it is a current subject, and both of them are under construction, which means that it was possible to see how the process works from the ground up. It has been shown that Swedbank Arena is built up in an entirely new district in which there will be new infrastructure that is tailored to the stadium and the crowd it?s expected to attract.

Det finns fördelar med att använda projektfinansiering vid PPP. Undersökningen visar att projektfinansiering är ett enastående verktyg för riskallokering. Dessutom resulterar projektfinansiering i minskade kostnader för agentkonflikter. Emellertid är privat finansiering normalt sett dyrare än offentlig finansiering..

ABSTRACTDuring the last decades, environmental impacts have increased significantly, much due to the great traffic flows within cities. Therefore, to reduce these impacts and encourage a healthy way of living, it has in recent years become vital to generate safer and more sustainable and flexible modes of transportation. In order to do so, authorities and physical planners must work together to find viable solutions to incorporate in the infrastructure and offer alternative transport modes ? such as walking, cycling and public transportation. The purpose of this thesis is to examine the development of the cycling infrastructure in the city of Västerås and whether it is possible to expand bicycle commuting alongside public transportation. The thesis consequently aims to study how different physical planners within Västerås municipality work with traffic related questions.

Msc in Logistics and Transport Management.

The purpose of this article is to describe the discourse in which public-private partnership (PPP) resides, within the Swedish parliament, in the field of infrastructure. I have chosen to look at the latest three years deliberation where PPP appears in parliament bills.This case study is based upon discourse as a qualitative method. Five indicator signs which is history, comparison, geographic location, vision of growth potential and solution controls the context of PPPThe result of the analysis was that a clear discourse was unravelled. A first rather surprising conclusion shows that it is possible to disconnect the discourse from PPP. PPP is not important by itself, the result shows that it only play the part of possible solution to the problems related to the discourse and does not have any value in its own.This result lead the conclusion that PPP is no more than a tool for politicians to get as much out of their infrastructural aims as possible, as rational vote-maximizing actors.

Due to their complexity and heavy wear from rail traffic, switches are a sensitive part of the railway infrastructure and moreover expensive to maintain. Furthermore, increasing railway traffic not only accelerates the wear rate but also obstructs the necessary maintenance measures. This paper examines the opportunities for a transition to a long-term maintenance strategy in the Swedish railway network. It contains a study of the maintenance strategy of Banverket, and also analyses statistics of errors in the railway infrastructure. The survey was completed utilising interviews with infrastructure managers, maintenance contractors, planners of railway operations and the Banverket material service department.

The essay's aim is to explain how responsibility distribution between private and public bodies, primarily within three important service areas, can be visualised in light of the fact that they have experienced different forms of readjustment. We have chosen to study this by looking at the restoration work taking place after the hurricane Gudrun swept across southern Sweden on January 8-9, 2005; and we have chosen to concentrate on the service areas of electricity- and telephone supply, and public transport. The responsibility distribution has been depicted by carrying out qualitative interviews with employees within both private and public bodies included in the restoration work. The conclusion produced is that there were obscurities in the formal responsibility distribution between private and public actors taking place in conjunction with the hurricane restoration work.In a deeper analysis, the result can be explained by a ?several hands? problem arising since the number of actors has increased as the public sphere has adopted leadership forms influenced by the private business sector.

The electric car has existed for over a century and producers has tried to commercialize it earlier but has not succeeded. In recent years, however, a change occurred that may be significant for the electric car and it is now to commercialize in the market of passenger cars. The technology has in recent years elaborated as more car manufacturers have started to invest in development in the subject field. This thesis aims to compile an action plan for the development of charging infrastructure for electric vehicles in Uppsalahem ABs residential areas. It is based on a survey of different residential areas and a survey of charging infrastructure.

The public service within health and care has changed remarkably during the last 30 years. It has been inspired by management ideas from profit-making businesses. Those thoughts are an umbrella term called Nex public management. In what way has New public management influenced the public service in Sweden? Important concepts in the change of public service are quality, effektivity and goals.

Denna rapport dokumenterar arbetet med att utreda hur C# och Pitch RTI fungerar tillsammans, och vilka prestandaeffekter som resulterar av denna koppling. Motiveringen kommer från att kunder till företaget Pitch har efterfrågat stöd för C# som programmeringsspråk när de använder Pitch RTI. Metoden gick ut på att successivt lära sig använda de tekniker som finns tillgängliga, för att sedan implementera lösningar på hur kopplingen ska ske. Resultaten visar hur övergången går till och prestandan som uppnåddes med hjälp av indexnotation. Tekniken IKVM hade högre prestandaindex och gick snabbare att komma igång med jämfört med tekniken C++/CLI.

The transformation within the swedish infrastructure has been a slow process from thebeginning of time. For almost a decade, the traditional form of contracting regardingbuildings and foremost infrastructure has evolved contracting involving the owner to definethe outcome of the product, regardless involvement from the supposed contractor. As forthe swedish market, the traditional design-bid-build (DBB) have been the primary choice ofcontracting. Although changes have been made over time regarding contracting formswithin the road administration, the railway sector has not improved or justified changesregarding choice of contracting, they have conducted same contracting relationshipsbetween them and the contractor.This bachelor thesis, conducted at the Swedish railway administration with supervision ofprofessor Kristian Widén at Lunds University, explores the forces behind the new era ofcontracting within the railway administration. This bachelor thesis focuses mainly oncontracting regarding design-build-operate-main (DBOM), the new contracting formulabetween the owner and the contractor.

This project explores how artificial landscapes as parks and squares above ground can save space by using the vertical voids in urban environments and how they can create spatial and social as well as ecological qualities and connections. Hybrid landscapes are a phenomenon of current interest within the field of architecture and urbanism. Architecture as surface, where facades and roofs become possible to tread, is a relatively recent occurence that has over the past few years become an increasingly common sight in architectural magazines and on international architecture exhibitions. Many of my selected reference projects have often been associated with sensational contemporary design trends generated by advanced computer software. But the phenomenon is also a result of other different currents of change that exist within today?s society, such as densified cities with a lack of open space, which is also expressed in architecture.

The transformation within the swedish infrastructure has been a slow process from thebeginning of time. For almost a decade, the traditional form of contracting regardingbuildings and foremost infrastructure has evolved contracting involving the owner to definethe outcome of the product, regardless involvement from the supposed contractor. As forthe swedish market, the traditional design-bid-build (DBB) have been the primary choice ofcontracting. Although changes have been made over time regarding contracting formswithin the road administration, the railway sector has not improved or justified changesregarding choice of contracting, they have conducted same contracting relationshipsbetween them and the contractor.This bachelor thesis, conducted at the Swedish railway administration with supervision ofprofessor Kristian Widén at Lunds University, explores the forces behind the new era ofcontracting within the railway administration. This bachelor thesis focuses mainly oncontracting regarding design-build-operate-main (DBOM), the new contracting formulabetween the owner and the contractor.