Datapath manufactures satellite antenna for telecommunication systems. These antennas have a wide range of application scope and are used in extreme environments, in war zones and hotspots. The antennas are very heavy, difficult to transport so the project group was asked to come up with a new design of light, foldable and easy transportable antenna reflectors. Datapath chose the M-Model for the future development, which was made for the military use. The existing antennas are very heavy and solid which makes it difficult to transport because it takes a large amount of space. The requirement for this project was to decrease the weight of the reflector by 50 percent and the transportation volume by 20 percent. The Bachelor thesis generated lots of different design and concepts with different choices of materials for the reflector, but only two concepts fulfilled all qualifications. The first concept was decided to have a body made completely out of Carbon fiber reinforced silicone (CFRS). This material is strong and robust once it unfolds and can stand external forces generated by strong winds, but it is very easy to fold it back and most important it is ultralight. The second concept was a reflector made of reflective fabric with an external shell construction made of polyethylene. Both of these concepts fulfill Datapath's requirements with aspect on weight, transportation volume and strength.

The influence of car brake system parameters on particulate matter emissions was investigated using a pin-on-disc tribometer. Samples from a low-steel friction material and a cast iron disc were tested for different sliding velocities, nominal contact pressures and frictional powers. Disc temperatures were also measured. Their impact on total concentration, size distribution, particle coefficient and transition temperature was analysed. Results show that frictional power is the most significant brake system parameter. However, temperature, as a response parameter, is the most influential, inducing a shift towards the ultrafine particulate fraction and raising emissions. A transition temperature, independent of the system parameters, was identified.

The purpose of the following thesis project is to decrease the payment value at JästbolagetAB, by improving the efficiency of logistics, which we will be studying to see what are thethings that can be improved. The improvement will be through the help of couple ofsuggested solutions; which we will recommend through this report.The mentioned suggested solutions will be based on a specific theory on logistics.In order to study improvement opportunities, we visited Jästbolaget multiple times for thepast couple of weeks, periodically. During that time, the group measured the cycle times forboth filling and emptying.

We have calculated the investment costs, and we used these calculations to concludemultiple improvement proposals. We concluded that quantities are low to build the cistern.Finally, after all the research we have done, we think that it is possible for the Jästbolagetcompany to implement our suggested solutions.

This report is about logistics principles that involve different logistics strategies to achieve the best working method which helps to improve a work environment and optimize productivity. The logistics principles that are being used today on Scania’s engine processing workshop are mostly based on past experiences and therefore there is a lack of scientific basis.

The purpose of the report is to analyze theories within logistics and then based on facts confirm and rank the principles that has been developed by the Logistics Department of Scania’s engine processing workshop. In theory part, the focus has been on giving a greater insight into the subject of logistics principles and term other principles that affect logistics at Scania.

The collection of the theories for the report was conducted through a literature study where course literature and data collection were processed. Interviews and surveys have been conducted among the staff of the relevant department to gather information that gives a better picture of the current situation.

In order to rank the principles, a theoretical measuring instrument called Analytical Hierarchy Process (AHP) was used to analyze a decision problem. The method can visualize how different parameters have an impact on each other and how paired comparisons provide a priority order of input.

The logistics principles were divided in four categories and used as inputs in the AHP analysis. The result was then used to rank the logistics principles.

The realization of project requires collaboration between many different participants.  The majority of interactions happen on the project management team level. The general believe is that teams/groups can achieve more efficiency if they use effective instruments of risk management in their communication process. The aim of this study is to investigate how the level of communication risks varies between different project group development stages and how project manager can help project group to reach the maximum effectiveness of communication. The study analyzes different communication barriers that project group meets while working at project. The investigation was performed by using qualitative analysis method in four different projects of an engineering and consulting company involved with mining industries in South Africa. Interpersonal relationships were measured by FIRO model and communication risks were evaluated by a typical risk analysis method. Results of investigations show that communication risks are directly affected by the stage of group development and different factors of group development tend to synchronize with each other. The total amount of risks tends to decrease as group moves from one stage to another on the FIRO model. For improving communication process in project groups the dynamic nature of FIRO model should be considered. The risks will not be settled down unless the group stands in “Openness” stage and the group development stage is vulnerable to any changes; the environmental effects should be carefully followed for preventive action.