Powder Metal (PM) gears are machine element components which operate under the same principle as conventional gears, but, due to their intrinsic material characteristic need to be designed slightly different, and its manufacturing process offers advantages previously unobtainable by conventional steel gear manufacturing methods. The use of PM in similar applications, such as synchronous hubs, makes them a suitable candidate for production in such material. The current master thesis work focuses on gear design using PM by utilizing finite element method (FEM) to reduce weight and inertia taking into account root bending strength and tooth deflection.First a topological optimization is used to determine feasible candidates for different web designs which have as objective to reduce volume, similar topologies were shown during different loading conditions; and hence, this topology was chosen as a suitable candidate. A shape optimization of the topological candidate was performed having as state variables root bending strength, independent for compressive and tensile side of the tooth loading; and tooth deflection, which in concept can be correlated to static transmission error (TE).Another aspect in this thesis analysed is the possibility to incorporate non-trochoid root geometry, a trochoid root is always present when machining with a hob, into the gear root and hence reduce the stress concentration here. Due to the use of PM, a non-symmetric optimized root can be achieved and hence be optimizing compression and tension.Results showed significantly lower inertia, for example certain results showed 40% reduced when compared to solid gear, with adverse effects as increase in tooth deformation and increase in maximum principal stress.

Barns musikaliska intresse och utveckling kan bero på föräldrarnas påverkan genom uppväxten. I den här rapporten presenteras resultatet av kvalitativa intervjuer med sex mammor med barn i en ålder under två år. Tre av mammorna ägnar sig åt musik i sin profession, medan de andra tre har ett mer allmänt musikintresse. Oberoende av föräldrarnas bakgrund visar det sig att de anser musikalisk stimulering vara någonting viktig och nyttig för deras barns utveckling. Till exempel har alla i intervjugruppen deltagit i någon form av musikalisk aktivitet ämnad för barn.

The war between Georgia and Russia awakened the world pretty brutally when a small country like Georgia tried to restore order in South Ossetia. The war between the two countries took place over five days in August 2008. This paper discusses the Russian operational art and its development after the war. The starting point is to test the traditional and classic Russian theory of operational art. The aim is to describe and discuss the Russian operational experience and any developments and trends in the Russian Federation's armed forces. The purpose of describing the theory behind the operational art is to create an independent analysis model. The essay?s analysis is based entirely from qualitative research with the collection of qualitative data in the form of texts and documents with a holistic perspective. Initially, the theory chapter is created from an inductive approach to identify, define and describe the operational concept and principles, creating a theoretical model of explanation. The developed analytical model is based on the Russian theory of operational art and takes off from a deductive approach to the collected empirical data. The results of the performed analysis results are interpreted and the product of this presented in the operational conclusions. Russia had a strategic ability to win the war by means of strategic resources related to tempo, simplicity and shock effect on the Georgian troops. Russia carries out a variety of reforms and the outcome of the war demonstrates the importance of Russia having a strategic capacity to make use of one in the type of conflict that Georgia represents. This success shows that the strategic capabilities are initially a success factor, while the deficiencies in the operational and tactical levels cannot be accepted in the long run, but must be developed.

In this paper the effect of capital structure on profitability has been investigated among Swedish companies. The essay intends to examine how the relationship between debt and profitability appear among Swedish companies and if the relationship differs between industries. The purpose is to find out how debt affects the profitability of Swedish companies.A quantitative approach has been applied. The selection was made among companies listed on Nasdaq OMX Stockholm, which resulted in a sample of 207 companies. Several regression analyzes has been formed, based on the independent variable debt-ratio and the dependent variables profit margin, pre-tax profit margin, operating margin, return on assets and return on equity.

China has the world?s largest population and during the last thirty years the country has implemented political and economical changes that have affected China to move towards a more western market economic direction. At first this development was going slow but during the last five years it has increased which today has made China the world?s greatest growing economy. China?s improved cooperation with the world is one reason for this growth which has led to a cumulative of the consumer market.

Due to poorly functioning local and regional markets, the smallholders in San Francisco, Petén, were dependent on intermediaries that took advantage of the smallholder?s distance to markets. In an attempt to secure income and strengthen their bargaining position, 189 smallholders joined forces through the creation of a social smallholder network, held together by a community based enterprise. This enterprise was initiated in 2011 with the help of government incentive programmes and NGOs that within a few years will leave the enterprise to auto regime. This study treats the sustainability of a community forest based enterprise, Chachaklum, in northern Guatemala. The study identifies factors that enable smallholders to organize themselves in order to obtain business practices that support an improved standard of living.

Bakgrund Extremt prematura barn har svårt att tillgodogöra sig näring på grund av att mag- tarmkanalen är omogen. Barnen har hög risk för undernäring och tillväxthämning är vanligt. Nutritionen måste därför optimeras och vara individuellt anpassad efter varje barns behov. För att nå de uppskattade näringsbehoven och möjliggöra att den fetala tillväxten efterföljs är det nödvändigt att berika den enterala nutritionen.Syfte Att undersöka näringsintaget mellan två års-kohorter av extremt prematura barn och jämföra näringsintaget med uppskattat näringsbehov samt undersöka om ändrade nutritionsregimer påverkat viktutveckling. Sekundärt undersöktes förekomst av nekrotiserande enterokolit (NEC). Metod En retrospektiv observationsstudie av extremt prematura barn (<27 gestationsveckor) födda under 2006 respektive 2011.

Interactive media is constantly increasing in our surroundings and with the innovation of touch-screens, two-way communication with screens has become part of our daily life. Still, this well known way of process information is not often seen in the in-store environment of grocery retailing. Here, interactive media is an unestablished field where empirical studies are invisible within the academic world. The lack of knowledge in which effect interactive digital signage has is one of the barriers of investing in this marketing solution in-store. The main purpose of this study is to examine and describe the effects of interactive digital signage at shelf within grocery retailing.

In this report we compare the two programming languages PHP and C# in .Net. They are both used to create dynamic websites and on the web there's a debate going on about which of these languages you're recommended to use. With this report we want to make ourselves a more scientific base of which of these languages that is the most used language and which languages that are the most suitable for creating dynamic websites. We have two purposes with this report:1. To compare the usage of the programming languages C# in .Net and PHP at web agencies, advertising agencies and combinded agencies in Sweden today.2.

The purpose of this study was to examine how the design of the wards, at Björnkulla nursing home, affects the residents? wayfinding ability and autonomy. Thus, the aim has been to make a design proposal that, trough color and design can increase the residents? chance to independent mobility. Since the study aimed to examine how the environment affect and can support people with dementia, qualitative methods were used.

The common drivers for hotel accommodation are tourism and business travel and hotel demand seem to outstrip supply in many places. More than 50 % of visitors to Sweden stay at a traditional hotel but is there room for alternate accommodation like serviced apartments besides the traditional hotel for people visiting? These are usually referred to as extended stay or long-stay accommodation. The aim of this thesis project is to explore whether there are growth opportunities for serviced apartments in Sweden. A secondary aim of the thesis project is to identify challenges (if any) to this segment and also to identify the major operators of serviced apartments in Sweden.

This thesis is performed at Saab Bofors Dynamics in Karlskoga and investigates a technique for ranging with laser pulses. The investigated technique is called Constant Fraction Detection (CFD). Described briefly, the received laser pulse is split into two equal parts, where one part is delayed half the pulse width and inverted. This signal is added to the original pulse. The resulting curve has the shape of a laying S and the detection of the zero level is used to stop the time measurement.

Chronic valvular disease (CVD) is the most common cardiac disease in dogs, which account for 75% of all the cardiac cases. Cavalier King Charles spaniel (CKCS) is the most affected breed and it´s 13th times more likely that a CKCS, between the age of 7-10 years, will die or be euthanized for cardiac disease, compared with other breeds. The prevalence has been proven to bee independent of coat color and weight but highly dependent on age and gender in CKCS. In 2001 the Swedish Kennelclub and the Special club for cavalier King Charles spaniel created a breeding program against CVD in CKCS. In this program dogs are not allowed to breed until 4 years of age and have to have a heart auscultation without murmurs.

This essay explores the economical and social paradigms surrounding one of the most influentialNordic border dynastic noble families in the second half of the fifteenth century - the AxelssonTotts. How mercantile possibilities and opportunities offered to them, reflected on their politicalactions and social bands. The Axelsson brothers of the Tott Dynasty would become of one of themost powerful noble families within the Nordic Union between 1444 och 1487.Axel Pedersen (Tott) would through well chosen marriage alliances into the noble families of bothDenmark and Sweden, and with political prowess lay the foundation for one of the most dynamicfamily empires of the fifteenth century. In the year 1442, the Axelsson brothers swore loyalty toeach other; to protect and defend their mercantile and economical interests in Denmark andSweden. They would eventually control the trading routes in the border areas of the Union, and byexploiting the political chaos within the Union they would gain access and influence to the landtrading routes for export and import within the Union and the shipping export routes in the BalticSea allowing them access to the Russian market through Finland and Estonia.The island of Gotland, with its tactical and important geographical position in the Baltic Seabecame the key to the Nordic Union.

This thesis is about the effect of political efficacy on societal participation among youths aged 15 to 29. It takes a starting point in the gloomy view of the decline of political participation among citizens in the western world, especially pointing out youths as a threat to democracy. This is a broad subject to take on so my aim becomes a bit more specific. The aim of the thesis is therefore to investigate if belief in ones own capacity and in the responsiveness of the political system affects the actual participation among youths in Europe, independent of a set of alternative predictors. Moreover the thesis is divided into two sub-investigations, one qualitative and one quantitative.