<p>Wireless communication is being developed in the last years day by day, there are several standards that talks about it. We are going to go through the IEEE standard 802.11 which talks about wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications. Looking this more carefully we will study MAC specifications and its environment. </p><p>The work that ISY department at Institute of Technology of Linkoping University has proposed is to design a MAC sublayer implementation for WLANs using C language programming and testing it with the test environment called “test bench”. This test bench will simulate LLC sublayer and PHY layer, in this way, our MAC implementation will has to interact with it. Therefore we will simulate a wireless network where we are going to have a short number of stations and we are going to look at carefully the MAC sublayer response in an ad hoc network.</p>

Wireless communication is being developed in the last years day by day, there are several standards that talks about it. We are going to go through the IEEE standard 802.11 which talks about wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications. Looking this more carefully we will study MAC specifications and its environment. The work that ISY department at Institute of Technology of Linkoping University has proposed is to design a MAC sublayer implementation for WLANs using C language programming and testing it with the test environment called “test bench”. This test bench will simulate LLC sublayer and PHY layer, in this way, our MAC implementation will has to interact with it. Therefore we will simulate a wireless network where we are going to have a short number of stations and we are going to look at carefully the MAC sublayer response in an ad hoc network.

This thesis is dealing with programming languages C and C++, various methods writing their constructions and development of application which detects very similar programs written in these languages. The application is intended to control plagiarism in school projects in which students have to create a program in C or C++. The application can check short programs as well as large programs divided into several modules.

Com o aumento crescente das capacidades dos circuitos integrado e conseqüente complexidade das aplicações, em especial as embarcadas, um requisito tem se tornado fundamental no desenvolvimento desses sistemas: ferramentas de desenvolvimento cada vez mais acessíveis aos engenheiros, permitindo, por exemplo, que um programa escrito em linguagem C possa ser convertido diretamente em hardware. Os FPGAs (Field Programmable Gate Array), elemento fundamental na caracterização de computação reconfigurável, é um exemplo desse crescimento, tanto em capacidade do CI como disponibilidade de ferramentas. Esse projeto teve como objetivos: estudar algumas ferramentas de conversão C, C++ ou Java para hardware reconfigurável; estudar benchmarks a serem executadas nessas ferramentas para obter desempenho das mesmas, e ter o domínio dos conceitos na conversão de linguagens de alto nível para hardware reconfigurável. A plataforma utilizada no projeto foi a da empresa Xilinx XUP V2P / With the growing capacities of Integrated Circuits (IC) and the complexity of the applications, especially in embedded systems, there are now requisites for developing tools that convert algorithms C direct into the hardware. As a fundamental element to characterize Reconfigurable Computing, FPGA (Field Programmable Gate Array) is an example of those CIs, as well as the tools that have been developed. In this project we present different tools to convert C into the hardware. We also present benchmarks to be executed on those tools for performance analysis. Finally we conclude the project presenting results relating the experience to implement C direct into the hardware. The Xilinx XUP V2P platform was used in the project

Com o aumento crescente das capacidades dos circuitos integrado e conseqüente complexidade das aplicações, em especial as embarcadas, um requisito tem se tornado fundamental no desenvolvimento desses sistemas: ferramentas de desenvolvimento cada vez mais acessíveis aos engenheiros, permitindo, por exemplo, que um programa escrito em linguagem C possa ser convertido diretamente em hardware. Os FPGAs (Field Programmable Gate Array), elemento fundamental na caracterização de computação reconfigurável, é um exemplo desse crescimento, tanto em capacidade do CI como disponibilidade de ferramentas. Esse projeto teve como objetivos: estudar algumas ferramentas de conversão C, C++ ou Java para hardware reconfigurável; estudar benchmarks a serem executadas nessas ferramentas para obter desempenho das mesmas, e ter o domínio dos conceitos na conversão de linguagens de alto nível para hardware reconfigurável. A plataforma utilizada no projeto foi a da empresa Xilinx XUP V2P / With the growing capacities of Integrated Circuits (IC) and the complexity of the applications, especially in embedded systems, there are now requisites for developing tools that convert algorithms C direct into the hardware. As a fundamental element to characterize Reconfigurable Computing, FPGA (Field Programmable Gate Array) is an example of those CIs, as well as the tools that have been developed. In this project we present different tools to convert C into the hardware. We also present benchmarks to be executed on those tools for performance analysis. Finally we conclude the project presenting results relating the experience to implement C direct into the hardware. The Xilinx XUP V2P platform was used in the project

This article describes AVR Wizard programme that was developed for AVR Studio. This software simpliefies microcontrollers (MCUs) programming in a way of general peripheries settings and registers settings for varied MCUs. AVR Wizard is able to generate C language-based MCU main programme structure with chosen settings. User-friendly handling and no longer detailed studies of MCU datasheets are also main advantage.

The content of this thesis is to create a detailed description of 32-bit ARM-based processors. Reader will be inform about the each one of the family of ARM-based processor, about the options of creating applications for these CPUs. The Applications are commonly developed by using the C/C++ language. This text also deal's with the development environments. These tools are making easier the development of new applications. This thesis also contains a complete design and description of development board with Atmel AT91SAM7S64 MCU (with sample of source code included).

This thesis represents the Model-View-Controller pattern. It is focused especially at the description of the particular architecture layers principle and its functionality. It deals with the reasons of the three-layer architecture invention and it also deals with the advantages and the disadvantages provided by this pattern. The most frequent implementation of the MVC – the access to the data stored in the database through the web user interface is also described in this chapter. The next part of the thesis is concentrated on .NET Framework platform created from very voluminous, language-neutral library that is basically huge collection of the source codes providing the solution for common programmer’s problems and from the interface used for running up the applications created in .NET environment. The goal of the chapter concering with .NET Framework is to describe its architecture. The thesis also describes the platform invention, various versions of the .NET, the data access technology ADO.NET and the ASP.NET member ObjectDataSource. The chapter describing languages supported by the .NET Framework is focused on the C# language and its versions. The application “Multilayer applications in .NET environment” is the practical implementation of the mentioned technologies and it is described in the last chapter. The application’s architecture with the concentration on the particular Model-View-Controller layers implementation in the form of Microsoft Visual Studio 2005 projects is also described in the thesis. Special attention is paid to each operation over the data stored in the database tables that the application enables the user to execute, as for example data inserting, updating, selecting or deleting. The common business object’s child generation process is also described deep into the details.

<p>The cyber-attacks have increased, and with everything going digital, data theft has become a significant issue. This raises an alarm on the security of the source code. Sometimes, to release products early, the security of the code is compromised. Static analysis tools can help in finding possible security issues. Identifying and fixing the security issues may overwhelm the software developers. This process of "fixing" the errors or securing the code may take a lot of time, and the product may be released before all the errors are fixed. But these vulnerabilities in the source code may cost millions of dollars in case of a data breach. It is important to fix the security issues in the source code before releasing the product. This leads to the question of how to fix errors quickly so products can be rolled out with fewer security issues? A possible solution is to use temporal networks to find the influencer nodes in the source code. If these influencer variables are fixed, the connected security issues depending on the influencer in the community (functions) will also get fixed. The research question of the study: Can we identify the influencer node of the buggy site in the source code using temporal networks (K-tool) if the buggy sites present in the source code are identified using static analysis? The study also aims to know if it is faster to find the influencer node using the K-tool than the betweenness centrality algorithm. This research is an "Applied research" and will target the code written in C programming language. Possible vulnerabilities that can be fixed include "Integer Overflow", "Out of bounds", and "Buffer overflow." In the future, we plan to extend to other errors such as "Improper input validation." In this research, we will discuss how we can find the influencer node of the vulnerability (buggy site) in the source code after running the static analysis. Fixing this influencer node will fix the remaining errors pointed out by the static analysis. This will help in reducing the number of fixes to be done in the source code so that the product can be rolled out faster with less security issues.</p> <p><br></p>

WebAssembly is a new binary code specification, which was initially designed to complement JavaScript in web applications. WebAssembly is inherently portable and small, designed for multiplatform usage. Therefore, WebAssembly modules can be created to support embedded system-based biomedical sensor operation. However, WebAssembly has its own limitations to compensate with its portability. In this thesis, we show how WebAssembly modules can be applied to the basic biomedical modalities of body temperature, heart rate, and breathing pattern.  We show how the implementation performed, and what challenges were met during the development. It is concluded that WebAssembly can be applied for achieving safe and effective biomedical sensor devices, although with some limitations. / WebAssembly är ett nytt binärt maskinkodsformat, ursprungligen skapat för att komplettera JavaScript i webbapplikationer.  WebAssemblys kod är liten och kan lätt användas på flera plattformar. Därför kan WebAssembly-moduler skapas för att stödja inbyggda system för biomedicinska sensorer. WebAssembly har dock sina egna begränsningar på grund av sin portabilitet.  I denna avhandling visar vi hur WebAssembly-moduler kan användas på enkla biomedicinska mätningar av kroppstemperatur, hjärtfrekvens och andningsmönster. Vi visar hur implementeringen genomfördes och vilka utmaningar som möttes under utvecklingen. Slutsatsen är att WebAssembly kan tillämpas för att skapa säkra och effektiva biomedicinska sensorenheter, även om det finns en del begränsningar.