A current conveyor is an active building block that can be used to implement most active and passive components. It differs from the operation amplifier in that it uses current instead of voltage. The current conveyor also has significantly higher voltage gain over a broader frequency range. To simplify the construction of analogue circuits and increase the construction efficiency it is desirable to use a top-down methodology. This means that the whole system is partitioned into a hierarchy of subsystems.

Companies acquiring ERP systems are often dissatisfied with the project and therefore consultancy firms wish to make use of project models in order to achieve success in implementations. Since research on ERP implementations in service companies is limited, there is a need for mapping of critical activities in implementation projects in this line of business. Under these premises, the purpose of our master thesis is to develop a model for implementation of ERP systems, specified in activities, which can be used by mid-sized consultancy firms with mid-sized qualified service companies as customers.A literature study including project models, modern models and methodologies for ERP implementation, commonly existent activities, success factors and system development methods was carried out. Starting out with this, a theoretical model for ERP implementation was generated. In excess of this, a case study was conducted, where the implementation of the ERP system Microsoft Dynamics AX at the service company Eurostep, performed by the consultancy firm Medius, was studied.

?Claiming the right to space? is an argument frequently used by street artists for justifying illegal art in the public space. The public city space as a room of democracy and right to free speech is by some people considered threatened by commercial interests, and street art has become a way to demonstrate disapproval towards this. Street art is illegal and often anonymously performed in our cities. It developed in the late 1970s from the urban graffiti scene in America, and has therefore a lot in common with the graffiti movement.

We derive the equation linking the Weyl tensor with its Lanczos potential, called the Weyl-Lanczos equation, in 1+3 covariant formalism for perfect fluid Bianchi type I spacetime and find an explicit expression for a Lanczos potential of the Weyl tensor in these spacetimes. To achieve this, we first need to derive the covariant decomposition of the Lanczos potential in this formalism. We also study an example by Novello and Velloso and derive their Lanczos potential in shear-free, irrotational perfect fluid spacetimes from a particular ansatz in 1+3 covariant formalism. The existence of the Lanczos potential is in some ways analogous to the vector potential in electromagnetic theory. Therefore, we also derive the electromagnetic potential equation in 1+3 covariant formalism for a general spacetime.

The river Göta Älv reaches between Vänern and Gothenburg and is the main raw water source for Gothenburg that supplies about 700 000 people with water. To protect and maintain a high water quality, continuously samples and water analyses are made throughout the river. In 1998 a protection area was founded between surte and Lärjeholm where the raw water intake is. This was made to increase the awareness of the importance to protect the water. However, there is a lot of contribution of untreated stormwater to Göta Älv within the protection area.Göteborg Water and Sewage Works commissioned this thesis where two areas, Tagene industrial area and Kärra residential area, with untreated stormwater outlets within the protection area are studied.

Arbetet har syftat till att fallstudiepröva rutnätskonfigurationen som grund för en strukturplan med avsikt att möjliggöra en övergripande strategi för utbyggnad av ett exploateringsområde..

The purpose of this case study has been to investigate the development and implementation of metadataschemas in two swedish governmental agencies. The interest of metadata in relation to records managment has been significant lately due to the challenges posed by the digital environment. This has been manifesteted in international standards such as TS/ISO 23081 Metadata for records and the MoReq 2 metadata specification issued by the DLM-forum. The extent to which these standard has influenced practice seems less overt however which has been one main motivation for this study.   The research questions adressed are: What has been the main purposes for the development of the metadataschemas? Which standards and role-models have influenced the metadataschemas? How has the implementation of the schemas been carried out? The case study has been conducted using a qualitative research method.

The aim of this Master's thesis is to analyze the relation between the discursive formation and the optical formation in the public library-apparatus. An ongoing individualization process in the library field and in society at large is used as a backdrop in the analysis. Discourse analysis is used as a method to explore the main Swedish library periodicals Biblioteksbladet, Bibliotek i Samhälle and DIK-forum. All issues from the years 1999 and 2009 have been used as material. The main analytical instruments applied in the analysis of this material are Michel Foucault's terms dispositive, apparatus and diagram.

This is an explorative study about subject indexing of a special collection of books, administered by the John Andrén Foundation at the library of Ystad. The study summarises a number of theoretical perspectives as well as some practical instructions on how to carry out the task. Theories have been placed into five different groups according to their various approaches to subject indexing. These have been analysed in regard to their usefulness to the Andrén collection. The authors have tested and evaluated six practical models on a selection of books from the Andrén collection.

Since product placement is a relatively new phenomenon in Swedish television, there is a lack of research on what attitudes Swedish TV-viewers hold towards it. This is where our paper will contribute to the research. The purpose of this reserachpaper is to describe and analyze what attitude Swedish TV-viewers has towards product placement. Kim Schröders multidimensional model of mass media reception were used, which is a developed model from Stuart Hall?s ?encoding/decoding? one-dimensional model.

I denna fallstudie av Region Skåne undersöks uppkomsten av nya forum för samarbete i samband med regionbildning. För att undersöka detta använder vi oss av tre politiskgeografiska begrepp. I Skåne har kommunerna delats upp i fyra samverkansorgan i vart och ett av regionens fyra hörn, detta för att kunna hävda de egna intressena gentemot regionen. Kommunerna i varje hörn har olika grad av beroende till regionen och undersökningen visar att ju större beroendet är desto mer integrerat blir samarbetet inom det egna samverkansorganet.För att skapa en förståelse för ämnet ges en kort presentation av hur regionaliseringsprocessen har sett ut i Europa, Sverige och Skåne. Materialet till analysen utgörs främst av intervjuer och rapporter där vi fokuserar på tillväxt- och utvecklingsfrågor.

Testing has always been an important task in the scope of software quality. Though it has never been as much appreciated within the management of the organisations as the software development has. However testing is becoming more attractive within organisations because it becomes more evident how much money working systems saves in contrast to defect ones. A tester often use testing tools to simplify the work progress. There are a lot of tools nowadays but not many evaluating models which helps the tester to know which one to recommend.

In this study, the pre-tension force in an insert screw connection are examined in order to establish a greater understanding of the system and to facilitate the process of making new metal cutting tools. Certain especially significant design variables such as the offset, the length of the contact thread and the shank length above the threaded hole, are selected to be closely examined. A comparison of the influence on the pre-tension force between threaded holes made with a worn, versus new, threading tool is also involved in the experiment. The study is limited to handling the screw sizes M2,5 and M3,5. The results show that a regression model, with good approximation, can be fitted to the measured values.

This project is a contribution in the debate of sustainable city planning. The conceptual ideas in this project can be used on many places and are here applyed on the center of Nacka, outside of Stockholm. The essay is based on an entry in the competition Europan 9, advertised by Europan in collaboration with the municipality of Nacka. The theme of the competition is ?sustainable city and public space?. The discussion of the sustainable city is a very wide subject which needs to be narrowed to suite the context of Nacka.

The name of the study means ?The short arm - a study in diversity and arm?s length in the cultural collaboration model?. Right now there is a reform in the Swedish cultural administration where the responsibility for handing out state funds and grants to cultural organizations is changing from the state government to the local regional governments. The purpose of this study is to map the organisational changes caused by the reform and investigate how this affects the regional policies concerning cultural diversity and the arm?s length principle.