This bachelor thesis is about an ultrasonic sensor, implemented in a bubble chamber in Artis. The sensor consists of the piezoelectric sensor and an electronic control circuit. The control circuit consists of a programmable microprocessor, PIC18F2420 and a circuit, which sends the excitation signal to the piezoelectric sensor, and later receives the echo. This bachelor thesis consists also of a theoretical study, which examines different techniques of liquid level sensing in a chamber. The study discusses which factors are important in liquid level sensing and examine accepted methods.

Context. In today?s society we use smart cards in many areas, NFC is a smart card technology that allows contactless interaction between a reader and the tag, the tag is often in the form of a card. NFC can be used for various payment methods or as access card to a building which makes life easier. In previous studies, the technique has proven to be weak to attacks using an NFC reader connected to a computer.

Children that are taken care of for institutional care by the social services are unprivileged as a group. When society takes over the parenting role, it forces local governments and other accountable authorities to guarantee these children satisfactory support and good care according to each child's needs. The aim of this thesis is to analyze and discuss problems with implementation in policy processes when authorities incorporate. From the normative standpoint of legal security and the United Nations Children's Convention, this thesis investigates the consequences of interaction between two Swedish supervisory authorities for the social services: Socialstyrelsen and länsstyrelserna. To fulfill the aim I will investigate the approach taken by the authorities and the work division between Socialstyrelsen and länsstyrelserna.

This major project in Building Engineering has its focus on inquiring into what methods has been used in the planning process of the residential buildingLjusbojen 1. This project has been conducted in cooperation with Kadesjös Ingenjörsbyrå AB, an engineering contractor firm which also acts as the property developer. Initially several different general methods for planning residential buildings have been presented. After the methods from the process of building Ljusbojen 1 has been analyzed compared to the general methods presented in part 1. This shows what the determining factors are during the planning process; factors such as cost, quality, time management, know-how and environmental issues.

This report is a bachelor thesis work in the field of product development and design. The assignment has been to develop a solution for roof racks, normally used for cars, to fit on the open trailer models FS1425 and Alugance. The project was implemented by Johan Andersson and Victor Karlsson, students at the Mechanical Engineering program with a focus on product development and design at Jo?nko?ping?s school of Engineering, in spring 2012.The client wants to use transport solutions in the same way as roof racks on cars. The user of such a product is assumed to desire simplicity, safety and an attractive design with an appealing price, which has been a challenge during the thesis work.Pre-studies have been conducted to examine the potential competitors and gain knowledge in the research area.

Social control in different forms has existed in all known societies. This control has taken different shapes and expressions. In older smaller communities there was a collective control among the citizens. In modern societies the state is trying to control the lives of the citizens. These control mechanisms can be seen as both freedom-reducing and freedom inducing depending on which concept of freedom one upholds.

The purpose of this work is to find out if the suctionvalve to the salivaejector for dental equipment in a simple way can be improved or if a new design is needed. The result of the examination of the suctionvalve shows that the friction between the piston and the seal is high and that this causes the valve in a few cases sheaves. The study concluded that only small changes in material or detail, improve the component..

Denna uppsats beskriver Internet i Kina i allmänhet, från dess politiska bakgrundsmotiv och inledande grunder till dess nuvarande tillstånd av dynamisk ekonomisk infrastruktur och medel för folkligt politiskt inflytande. Tonvikten läggs vid för Kina unika aspekter, såsom partiinflytande över informationsutbytet, folkliga attityder till fildelning i ett samhälle som bara nyligen erkänt privat ägande samt effekter av kulturkrockar på nätet mellan västlig och kinesisk civilisation. Det argumenteras för att Kina i en framtid kommer att ha ett stort inflytande över cybermarknader och i beslutsfattande om Internets framtida utveckling, genom tekniska, ekonomiska och politiska medel. Slutligen resoneras att Internet i Kina har förändrat och kommer att förändra folkets mentalitet, så att det anammar västerländska tankemönster i liknande utsträckning som i angränsande länder, vilket banar väg för politisk pluralism..

Background:The concept of transition means a change in a person's life where he or she is forced to adapt. There are different phases in life that results in different adaptations. In this essay, transition is described as the physical and mental journey between the home and an elder care facility. The Aim was to describe elderly people's experiences of transition when moving from their previous home into an elder care facility. The Method used was a literature review.

Saab Bofors Dynamics AB is looking for ways to let the employees work wireless in the future. The security in Wireless Local Area Networks (WLAN) has not been considered very reliable, but new standards and protocols have been developed to enhance the security in WLAN. Since most wireless components soon will have built in support for wireless communication, it is important to have a model to deal with secure wireless communication ready. This is necessary because it is important to protect the company?s information related systems, ensure contingency in the daily work and maintaining the trust of the market and the authorities.

In this essay the morphing of the interstate relations in the post-World War II Western Europe is taken in to consideration in discussing how these relations were stabilized and consolidated through community cooperation to achieve a state of stable peace. It concludes that the early 1900's of Western Europe comes close to being conditioned by Herz's security dilemma and then continues to analyze the development from this state to one of stable peace. In this analysis pivotal features of the ECSC, EEC and the EC are being scrutinized through the use of Boulding's Stable Peace theory and developments of the very same, in separate case studies, in order to account for the Communities? influence on the peace process.In doing this, conclusions are drawn that external pressures can be very effective in creating an incentive to move beyond an initial state of conflicting self-images and that a stabilizing process has got to provide a long term solution in order to sustain a trustful relationship. In order to provide this long term solution the community cooperations suggests that locking in through institutionalization, harmonization, and the creation of a state of irrevocable interdependence are highly effective..

The high level of competition and the rapidly growing technology development has created new challenges for today's businesses where they are forced to deliver more customized products at a lower price and a shorter time period. This places high demands on the companies' ability to design and develop better products in a more efficient way. In addition to developing products, the design process focuses on securing long-term success for the company by developing nourishing skills. However, to achieve an effective design process the companies must improve their ability to plan as well as use their knowledge base in a more efficient manner. Toyota's product development system is a critical component for companies to address challenges that they?re facing and offers a great potential to create significant competitive advantages.

The authors of this thesis have studied the handling of personal information in various kinds of organizations, because the perception is that the knowledge in this area is weak relative to the weight of the subject.The purpose of this paper has been partly to shed light on how knowledge of this area in the organizations that we have visited during the study but also to answer questions about handling, knowledge and security, and identification of individuals in different systems. What kind of problems the processing of these data creates and why these problems occur.In the beginning of our study we understood the importance of using the correct identifier and therefore chose also to examine what the various identifiers used by the organizations and why they chose these particular identifiers.In the qualitative analysis, Datainspektionen´s general rules and advice has been used as a basis together with the laws applicable to the organizations to get a good picture of how management of personal information is in these organizations.What we have found in this paper is that knowledge about how personal data is handled and what laws and rules are saying is very much dependent on how central the information is to these organization's activities. The police use so many different types of records for their organization to function well and they have very good knowledge of laws and regulations. In contrast, schools that do not handle as much of personal data themselves nor have the same knowledge among staff and do not have enough resources to cope with keeping the same knowledge base as the police. This is something that applies to all types of handling, depending on how important the information is for the organization, the better the security and knowledge in handling the data is..

Det här examensarbetet har genomförts i samarbete med Metso Dynapac AB i Karlskrona. På deras asfaltsvältar finns idag olika modeller av körspakar. De har samma grundfunktion och bör kunna samordnas till ett gemensamt reglage. Detta ger möjligheter att använda rationell tillverkningsmetod p.g.a. volymen.

AbstractBackground. The need for drugs delegation is increasing as more and more sick people are cared for at home and too few nurses working in home health care. Because of this, the number of delegations per nurse is often unacceptably high.Aim. The aim of this study was to describe the public health nurses´ experience in drugs delegation to home care staff in home care.Method. In this study a qualitative method with an inductive approach was used.