Modelica is a multi-domain and equation-based Modeling Language. Modelica is based on object-oriented principles and non-causal modeling. The language is constructed to facilitate reuse and decompose models. The models and the modellibrary can modified to design a new nonlinear components.Object-oriented modeling is an excellent way to analyze and study large complex heterogeneous physical systems. The object-oriented modeling approach build on reusing and decomposition of models and non-causal modeling.Modeling physical systems often leads to a DAE system with index 2 or 3.

The purpose with the report is to show that it is possible to design a class-D amplifier, using a programmable FPGA mounted on a developing card from Xess and a H-bridge. The FPGA was programmed in VHDL which is the language the software from Xilinx use to implement a logical function into the FPGA The logical function corresponds to a modeling of the music signal and the modeling can be described as a comparator which compare the music signal with a triangle wave and as a out signal produce a pulse width modulated (PWM) signal. The report is also a review and evaluating of two different modulating technologies, AD- modeling and BD-modeling. A detailed part about how the H-bridge was designed and how it works. The result of this project is a working audio amplifier to a significant lower price than the products in todays market..

In the end of the 80´s the area of system development moved into a new era. As a consequence many new methods and development models emerged which in many cases resulted in problems when choosing system development models and methods. As a result of these problems the today standardized Modeling Language UML (Unified Modeling Language) was created. UML is tailored to support many different types of projects. This is possible because of UML?s capacity to be adjusted and adapted to a specific company environment.The purpose of this bachelor thesis is to investigate how and why companies use UML and what experiences and opinions those who use UML have of using UML in practice.

Two ecological models of nitrogen processes in treatment wetlands have been evaluated and compared. These models have been implemented, simulated, and visualized in the Modelica language. The differences and similarities between the Modelica modeling environment used in this thesis and other environments or tools for ecological modeling have been evaluated. The modeling tools evaluated are PowerSim, Simile, Stella, the MathModelica Model Editor, and WEST. The evaluation and the analysis have been performed using McCall?s factors for software quality (McCall et al, 1977), a correlation analysis and the Constant Comparative Method (Glaser&Strauss, 1999).

AbstractMy purpose with this essey is to study how they work in preschool whir language- stimulation. I will try a way to work with this trough intervjus whit teacher at preschool. My main questions are: Way dose teachers use language- stimulation? How dose teachers use language- stimulation when it comes to there way of working and methods? Do the teachers think that language- stimulation help the childrens development?To answer these questions I interviewed 6 teachers I central Sweden and used this as data. I have written about language, language- development in a biologik and theoretical aspect, teachers plan, language- stimulation, playing by language sounds and TRAS (early registration of language development) in my literary review.My result shows that working whit language- stimulation helps children in there language- development, it also develops there self-image and identity.

This thesis has examined the Tekla Structures modeling software and answered the question of whether it could act as a suitable modeling program for the design department at Bjerking AB in Uppsala. The method used in this work is a case study of a previous project with existing basis to work form. The demarcation of the study was to examine only the usability of the foundations of in situ concrete. The work examined three main areas within the design process. The first was to model the concrete elements then to model the reinforcing and ultimately production of the drawings. Because Autodesk Revit was the existing modeling program in the Department conducted the evaluation as a comparison between the two programs.

Abstract During object-oriented system development, programming should be preceded by analysis and design to assure that the system fulfils the demands of the customer and simplify during the development phase and documentation. When modeling the analysis and design phases, several different notations may be used. One of these is the UML (Unified Modeling Language) which this thesis will cover. The aim is to compare the use of the UML i practice versus what is said in the literature. The investigation is built upon interviews at different companies to receive their reflections about the UML.

Abstract During object-oriented system development, programming should be preceded by analysis and design to assure that the system fulfils the demands of the customer and simplify during the development phase and documentation. When modeling the analysis and design phases, several different notations may be used. One of these is the UML (Unified Modeling Language) which this thesis will cover. The aim is to compare the use of the UML i practice versus what is said in the literature. The investigation is built upon interviews at different companies to receive their reflections about the UML.

???This research traces the trajectory of those methods of teaching grammar that five different teachers in Swedish from Stockholm municipality use in their practice. ?Their both constructive and negative attitudes towards grammar were in fokus when looking after the connection between their own experience of learning/teaching native language grammar and the methods that they are actually using in their own classes. I was trying to gain knowledge and achieve the purpose of this research by means of a qualitativ method.

The purpose of this thesis is to describe what Building Information Modeling, BIM, could mean for landscape architects, and also hopefully to make sense of the possibilities and problems of the system. BIM is about virtual design and is based on all consultancy groups in the design team modeling in 3D. Intelligent objects and metadata, such as price and material, are used. The project group has a common interchange format for simple sharing of information. To get an idea of how the situation with BIM for landscape architects looks like today, I collected information mostly through interviews.

AbstractIn my work on language development in preschool the purpose was to examine how and to what extent the pre-school supports children with special needs in their language development. Trough qualitative interviews with four preschool teachers, I wanted to see how they work with language development in preschool. In the study, Main questions asked in the inquiry :How do teachers and support children?s language development?What techniques, resources and tools available to facilitate language development? The conclusion that I made from my inquiry is that the primary language stimulation methods teachers use to encourage children?s language development are rhymes telling, books reading and song singing based on active selection of pieces that match the children?s maturity level.And how they are using different language stimulation techniques Karlstad model, TAKK (Signs of augmentative and alternative communication) and TRAS (Early registration of language development) to promote children?s language development. Keyword: Language development, language stimulation, treatment, communication, methods..

This report deals with the modeling of a part of the communication system based on the IEEE 802.11a standard which represents the next generation of wireless LAN with greater scalability, better interference immunity and significantly higher speed, up to 54 Mbps. 802.11a uses Orthogonal Frequency Division Multiplexing (OFDM) where modulation is performed by an IFFT and the demodulation by an FFT. After modeling the FFT in Matlab and C, the FFT implementation has been validated using a soft microprocessor core by Xilinx (Microblaze) and the results were compared..

The purpose of this study is to investigate what five primary teachers in five different schools with many second language students have for an idea about inclusion, language development, practices and environment of the multilingual classrooms. In my study I discusses teachers 'views on the multilingual classroom, inclusion, development of language in a language developing classroom environment and the importance of language skills has for multilingual pupils' language development and learning of the Swedish language. The method used was unstructured interviews using a digital recording device. The results showed that for these five teachers, meeting second language learners was in there everyday teaching, while it is a challenge to motivate and support them on their level. The teachers work diligently to find a balance and a working classroom environment for the multilingual classroom where all students, regardless of conditions, background, experience, knowledge and language could be offered an equal opportunity to education. .

At Forsmark nuclear power plant the rather old-fashioned software COPTA is used in containment safety analysis. There exists a desire within the organisation to introduce a more modern software with ability to more detailed modeling and increased usability.The goal of this thesis was to evaluate the software APROS in containment safety analysis. APROS models describing one of the containments at Forsmark NPP have been developed. Two simulations of typical containment incidents, one of them a large pipe break, have been made where containment safety parameters such as pressure and temperature are studied. Results are analyzed and verified against results from corresponding COPTA models.

Learning organizations and organizational development are interesting subjects that does not examine municipal organizations and private organizations an equal amount.  Furthermore, there exists little research on the effects of competence development for individuals in a leadership role within organizations. Because of this, we wanted to examine the impact of competence development in business modeling and how it affected local government activities. Competence development is used by organizations to develop their business and achieve a greater competitive advantage, but does competence development for individuals in a leadership role lead to organizational development? This paper examines competence development in the form of a business modeling course via the Bitstreamproject and the effects that occur within three municipalities as a result of the competence development. By interviewing three participants and four coworkers within different municipalities and studied the data from the Bitstream project, we can not conclude that competence development within business modeling leads to organizational development, only that it exists a tendency for it.