I dagens samhälle förs det diskussioner hur vi kan sänka vår energiförbrukning i olika sektorer. En av dessa sektorer som förbrukar mycket energi är IT sektorn. De mätningar som har gjorts i USA visar att år 2011, så har energiförbrukningen för datacenters fördubblats jämfört mot år 2006. Strategier har tagits fram för att sänka energiförbrukningen för datacenters och då framför allt på servrar och kylsystem. Dessa strategier benämns med allmäna ordalag Grön IT.

The Swedish energy companies have several different systems for data collection of the energy consumption of their clients. Often computerized remote meter readers are put in practice in order to register the energy consumption of large companies. The majority of household clients, however, are read off by the assistance of manual methods. Household power consumption is read off once a year. As a result, these clients are not debited for their actual consumption; their invoices during the year are the result of estimations. At times when the electricity supply system is highly loaded, electricity is more expensive.

The purpose of this thesis is to identify the factors that drive efficiency and effectiveness in technical development projects performed at A?F?s department of product development. In addition to identifying and analyzing these factors, the thesis also analyzes what needs to be taken in to account in order to implement a measurement system that is able to both monitor and control the identified factors.The thesis has been performed in a qualitative manner. It is based on interviews with people from several different technological companies, within different lines of business, all of which are customers to A?F?s department of product development.The results show that there are seven critical factors for project efficiency and effectiveness.

This thesis investigates the regulation of hybrid work environments by focusing on the implementation of rules by both management and employees. It examines the methods used to measure compliance and the consequences of non-compliance within organizations. The study also explores how flexibility in work arrangements and the balance between work and personal life affect employee well-being and productivity. Furthermore, it highlights the critical role of self-leadership in navigating the complexities of hybrid work, emphasizing how effective self-management can enhance organizational efficiency and employee satisfaction. We have adopted a qualitative research approach and interviewed employees, managers, and HR personnel with experience in hybrid work. The different perspectives are expected to provide insights into this area by including all levels within an organization It is evident that organizations that have clearly established rules and guidelines regarding hybrid work have achieved the best desired results.

The aim of this essay is, with reference to a close study on the negotiation delegations of the Tenant Association, to examine the principals of democracy in relation to distribution of power and participation, efficiency and professionalism. This is done with the intention to understand the Tenant Association's view on its own commission as negotiator, according to democracy. The investigation is carried out on the Tenant Association in the Swedish cities of Stockholm, Malmö and Gothenborg.The data acquisition was obtained by using a questionnaire and through interviews with representatives from the Tenant Association negotiation delegation.A central conclusion from this investigation is that the representatives of the Tenant Association generally are satisfied with the democracy model used in the organisation, despite awareness of the fact that there are some failures with representation amongst younger people, women and immigrants. Also, they suggest that the model with representative democracy is by all means the most useful because of its arrangement and efficiency in decision making processes.The policies of the Tenant Association, considering distribution of power and participation between elected representatives and employees, are legitimated by the negotiation delegates. However, there is obvious discrepancy in the look upon their respective tasks between the delegates and the chief negotiators.One can recognise the development of democracy that is called New Public Management in this survey.

The purpose of this thesis is to examine how investments are justified in the Swedish data center industry, with a focus on cooling equipment. This is achieved through semi-structured interviews with 20 different interviewees. These interviewees represent different facets of the industry and facilitate an understanding of which factors, such as: investment costs, operating costs, reliability, environmental impact and the influence of external and internal actors, come into play and to which degree they impact the investment decision-making process. The results show that primarily low operating cost in the form of low energy consumption is the driving factor when it comes to the procurement of new equipment. A lower environmental impact is a positive side-effect of lower energy consumption.

In recent years, moisture damages have been noticed in rendered, undrained stud walls. The design is built on the principle one-stage tightening which means that there is no air gap in the construction. The damages have occurred when water has permeated through the rendering in leaking connections and fittings for windows, doors, canopies, balconies, terraces and awnings. Behind the plaster carrier, which consists of either polystyrene or rigid mineral wool, plasterboard has often been used as a wind protection barrier. In many cases the wind protection barrier and the underlying wooden studs have been exposed to mould and in some cases even rot.

For several years Uppsala University together with several companies has been involved in a WISENET project aimed at improving railway transport security. By placing a sensor system near the wheels of each wagon, the temperature of the bearings can be measured and transmitted to a collector placed centrally on the wagon. This in turn transmits the collected data to RFID receivers placed intermittently along the railway.As the signals are transmitted wirelessly, problems may occur as the antennas get dirty or coated with ice and snow. To determine the effects of these coatings, several tests were performed examining the reflection coefficient S11, the impedance Z11 and the efficiency eta of an antenna, and how they varied when various coatings were placed over the antenna. Examined coatings were ice, snow and water to determine the effects of weather, and various metal-based coatings: powdered iron both pure and partially oxidized, and iron ore granules.

The use of energy is an important question in today´s society, and a substantial part of the energy that is used today is used in our homes. To lower this usage is vital, and there are regulations in place both on the national and the local level, that say that new apartment blocks must be built to consume less energy, which in the end will lower the impact on the climate.One way to make the housing sector more environmentally sustainable, is to produce energy issions that are bad for the environment, for example to build wind turbines close to or even on the buildings, so called urban wind power. The scope for this report is to see if urban wind power could be a sustainable alternative for the residential area that Svenska Bostäder plans to build in Albano in Stockholm.There are extensive scientific theories regarding wind and wind power, and a literature study is made to investigate past knowledge in the area. Efforts have been made to find earlier trials with urban wind power and, both scientific research and trials where urban wind power actually has been installed. The theory chapter deals both with the wind itself and how electricity can be generated from wind.

The aim of this study was to increase the knowledge about if and how the National Value System?s goal of a life with dignity for the elderly pervades the work in home care organisations. The study was based on a qualitative research method and was conducted through interviews with professional care givers in home care organisations, there were five individual interviews and one pair interview. The background for this study was the National Value System for the eldercare that was introduced in 2011. The theory of New Public Management and the concept of Rationality of Caring were used to analyse the result.

An organization that uses all of its improvement opportunities has a great advantage compared to its competitors. It is an important task when it comes to continuous improvements of every process. Up until September 2007, Husqvarna AB had a suggestion committee who evaluated every suggestion separately and the proposer received a payment if the suggestion was approved by the committee. However, this system did not work satisfying enough to fulfill Husqvarna?s needs and they are now looking for a system that can handle the ideas from the employees in a more effective way.

Making the work in the public sector more efficient is something that has been seen as necessary during the later years. One way to do this on municipal level has been to apply solutions former used mostly by private companies. The organisational parts have also been adjusted to existing conditions in this work of change. For example more and more municipalities have come to use the purchaser-supplier model since the beginning of the 1990's. Norrköping, Linköping and Motala have been chosen in this essay for a closer study of the effects of the changes of the 90's, from an efficiency point of view.

Mechanical ventilation is the most common type ofventilation in newly constructed office buildings. Therehas been an interest to utilize natural ventilationinstead of mechanical ventilation among architects andHVAC consultants in recent years. This is due to thesize of mechanical ventilation systems, which arespace consuming. The mechanical ventilation system isalso complex and requires maintenance. Furthermore,the fan uses a considerable amount of energy.

The purpose of this study is to investigate how much of the estimated annual electric energy production from Swedish wind power that actually was produced, as well as the history of this agreement over time. The aim is to also examine if there are properties that have caused some group of wind power plants to produce more or less, compared to their estimated production. Operational data on wind turbines collected by the Swedish Energy Agency was analyzed. A survey was made among owners of wind power plants with a nominal power of at least 2 MW. Two different methods for normal year correction of production data were used and compared.

This report present the design and manufacturing of a wide-band driver amplifier placed in radar module for airborne applications. The major goals for the amplifier were a high efficiency and to deliver a predefined output power. To reach the second goal an additional preamplifier had to be constructed. The amplifiers were constructed in three steps: Design and Layout in the software Microwave Office, Mounting components and Verification. The driver amplifier was decided to be a push pull configuration consisting of two parallel transistors biased in class AB.