Användningen av ren ny ull i mattor medför både önskvärda mekaniska egenskaper och miljömässiga utmaningar. Ullproduktionen påverkar lokala ekosystem och det globala klimatet på grund av faktorer som överanvändning av kemikalier och otillräcklig djurvård. Dessutom står ullindustrin inför utmaningar relaterade till energi, vatten och kemikalieanvändning under framställningen av ren ny ull. Mattsektorn inom hemtextil är idag den största användaren av ren ny ull, och står för cirka 45 procent av den globala produktionen. FN:s globala mål nr 12.5 är en del av Agenda 2030 och syftar till att främja hållbar konsumtion och produktion. Specifikt handlar målet om att öka återvinningen och minska avfallet inom olika industrier, inklusive textilindustrin. Med FN:s mål samt miljöpåverkan från ren ny ull i åtanke, står mattindustrin inför ökad uppmärksamhet och efterfrågan på återvunna materiella alternativ. Även den omfattande produktionen och konsumtionen av ny plast utgör, likt ren ny ull, betydande miljömässiga hot, med miljontals ton plastavfall som genereras årligen. Hanteringen av plastavfall är en global oro och ett stort utvecklingsområde kopplat till FN:s globala mål. En typ av plastfiber som, även i återvunnet tillstånd, har goda förutsättningar inom hemtextilindustrin tack vare dess mekaniska egenskaper är återvunnen polyetentereftalat, rPET. Denna studie utforskar möjligheten att ersätta ren ny ull med rPET som huvudmaterial i vävda mattor för inomhusbruk, baserat på en balans mellan mekaniska egenskaper och miljöpåverkan. Genom att analysera både de mekaniska egenskaperna och miljöpåverkan av de två materialen, syftar studien till att ge insikt i vilket materialval som kan leda till minsta negativa miljökonsekvenser utan att kompromissa med produktkvalitet. Med hjälp av en kvantitativ ansats undersöker denna studie mekaniska egenskaper och miljöpåverkan av mattor tillverkade med huvudmaterial ren ny ull respektive rPET. Mekaniska tester, inklusive nötningshärdighet och färghärdighet vid nötning, genomförs enligt standardiserade metoder. Bedömningen av miljöpåverkan utförs med enligt Higg Index, ett verktyg med syftet att utvärdera miljöprestanda inom textilindustrin. Resultaten visar att mattor med rPET som huvudmaterial uppvisar överlägsen nötningshärdighet jämfört med de av ren ny ull. Samtidigt visar mattor med ren ny ull något högre färghärdighet vid nötning. Miljöanalysen visar att mattor med huvudmaterial rPET har en lägre total miljöpåverkan jämfört med mattor med huvudmaterial ren ny ull, under förutsättning att övriga parametrar kopplade till produktion och produkt förblir identiska. Slutligen understryker studien vikten av ett informerat materialval vid tillverkning av mattor. Även om rPET erbjuder förbättrade mekaniska egenskaper och minskad miljöpåverkan, beror valet mellan ull och rPET på specifika applikationskrav och hållbarhetsmål. Att modifiera övriga parametrar i mattans näringskedja kan minska miljöpåverkan i samma utsträckning utan att nödvändigtvis ändra det primära materialet. / The use of virgin wool in carpets presents both desirable mechanical properties and at the same time environmental challenges. Wool production affects local ecosystems and the global climate due to factors such as chemical overuse and inadequate animal care. Additionally, the wool industry faces challenges related to energy, water, and chemical usage during manufacture of virgin wool. UN Sustainable Development Goal 12.5, part of Agenda 2030, aims to promote sustainable consumption and production, specifically targeting increased recycling and waste reduction across industries, including textiles. With consideration for these goals and the environmental impact of virgin wool, the carpet industry faces growing attention and demand for recycled material alternatives. Similarly, the extensive production and consumption of new plastics pose significant environmental threats, with millions of tons of plastic waste generated annually. Plastic waste management is a global concern and a major development area linked to UN Sustainable Development Goals. One type of plastic fiber that maintains favorable mechanical properties even in recycled form, suitable for the home textile industry, is recycled polyethylene terephthalate (rPET). This study explores the possibility of replacing virgin wool with rPET as the primary material in woven indoor carpets, based on a balance between mechanical properties and environmental impact. By analyzing the mechanical properties and environmental impact of both materials, the study aims to provide insight into material choices that minimize negative environmental consequences without compromising product quality. Using a quantitative approach, this study examines the mechanical properties and environmental impact of carpets made with virgin wool and rPET as the main materials. Mechanical tests, including abrasion resistance and color fastness to abrasion, are conducted using standardized methods. Environmental impact assessment utilizes the Higg Index, a tool for evaluating environmental performance in the textile industry. The results indicate that carpets with rPET as the main material exhibit superior abrasion resistance compared to those with virgin wool. However, carpets with virgin wool demonstrate slightly higher color fastness to abrasion. The environmental analysis reveals that carpets with rPET as the main material have a lower overall environmental impact compared to those with virgin wool, assuming all other production and product parameters remain constant. In conclusion, this study emphasizes the importance of informed material selection in carpet manufacturing. While rPET offers improved mechanical properties and reduced environmental impact, the choice between wool and rPET depends on specific application requirements and sustainability goals. Modifying other parameters in the carpet's lifecycle can also reduce environmental impact to the same extent without necessarily changing the primary material.

Denna studie syftar till att beskriva prestandatest av feta klienter, ibland också kallade skrivbordsapplikationer. Studien syftar även till att kartlägga testverktyg som kan användas för att utföra prestandatest av feta klienter och att identifiera vilka egenskaper som anses vara viktiga kriterier för dessa testverktyg. Undersökningen är skapad som en fallstudie som undersökningsstrategi där fallets utgångspunkt är Trafikverkets behov men undersökning och dess resultat kan även appliceras på andra verksamheter där testarbete utförs. Både kvalitativ och kvantitativ datainsamling användes i undersökningen genom intervjuer och dokumentstudier samt enkätformulär. Då insamlat data i undersökningen är av både kvalitativ och kvantitativ form så användes också en blandning av en kvalitativ tematisk analys och kvantitativ dataanalys. En del av analysen är en utvärdering av ett testverktygsurval mot sammanställda kriterier, en kriteriebaserad utvärderingsmetod. Tillvägagångssättet för val och utvärdering av testverktyg som tillämpats genom studien är baserat på tidigare befintliga teorier som funnits genom litteraturstudier. Litteraturstudierna har även stått till grund för att definiera undersökningens centrala begrepp och bidrar till resultat genom en jämförelse med insamlat data. Resultatet från undersökningen bidrar med ett beslutsunderlag för verksamheter som står inför ett val av testverktyg för prestandatest av feta klienter och en utvärdering av dessa innan licenser införskaffas. Undersökningen bidrar även med en karakterisering av prestandatest av feta klienter. I just detta fall var de mest passande testverktygen för syftet HP LoadRunner samt två testverktyg från eggPlant i kombination (eggPlant Functional och eggPlant Performance). / The aim of this study is to describe performance testing on thick clients, sometimes also referred to as desktop applications. Another aim with this study is to map out a selection of testing tools that can be used for performance testing of thick clients and to identify what qualities that is considered to be important criteria for these testing tools. The study is based on the research strategy called case study where the case is grounded the needs from Trafikverket but the results from this study could be applied on other business organizations that works with testing. Both qualitative and quantitative data collecting methods where used in this study, in the form och interviews, document studies and questionnaires. Since the collected data in the study where in both qualitative and quantitative form the use of a mix between a qualitative thematical data analysis and a quantitative data analysis had to be done. A part of the analysis was an evaluation on a selection of testing tools towards a compiled list of criteria, as an evaluation method based on criteria. The course of action for choosing and evaluation a testing tool that has been applied throughout the study is based on preexisting theories that has been found through reviews of literature. The reviews of literature have also been the ground for defining the central concepts of the study and contributes to the result by comparing what’s been found in literature to the collected data. The result of the study contributes with a basis for decision for companies and organizations that is in the process of getting a testing tool for performance testing thick clients och how to evaluate these before obtaining the testing tool licenses. The study also contributes with a characterization of performance testing thick clients. In this particular case, the most suitable testing tools came to be HP LoadRunner and also two testing tools from eggPlant combined (eggPlant Functional and eggPlant Performance).

This thesis deals with a load testing of web applications. The text is introduced with a definition of the load testing, reasons for its execution and a description of its types. Recommended procedures are provided for preparation, execution and evaluation of the testing. Several commercial and open-source load testing tools are described. Cloud testing -- the contemporary phenomenon -- is also included. The entire process of load testing depicted in this text is demonstrated on a selected application. A following chapter briefly deals with a profiling of web applications. It, again, covers its definition and its purpose, accompanied with a practical example. The aim of this thesis is to introduce the reader to the world of load testing, which is primarily accomplished by describing an example, which provides an in-depth explanation for every step necessary in order to perform the web application testing successfully.

This master's thesis describes functionality and principle of the Hefaistos measurement system, which is fully automated and modular. Its purpose is to measure frequency responses of materials and its temperature dependence. The thesis describes all the necessary parts of the modular measurement system. Main part of this system is the control application programmed in LabVIEW software environment. Another necessary parts are impedance analyzers for acquiring frequency dependencies and heating chambers for heating measured materials. The control application ensures hardware synchronization between impedance analyzers and heating chambers. Together they create the Hefaistos system. Modularity of the system means that a user may choose which instrument combination will be used. The system offers choice between three impedance analyzers Agilent 4294A, Wayne Kerr 6520B and HIOKI 3532 LCR Hi-Tester and two heating chambers AOIP GEMINI 700 LRI and AOIP HYPERION. Possibilities of the Hefaistos system are demonstrated on the results of an example measurement.

The work consists of two parts. The first part is focused on the determination of an anti-skid properties of the test section on Vídenská street. The anti-skid properties will be measured using a pendulum tester and macrotexture will be set at the same time. Microtexture will be measured using a volumetric patch technique. In the second part we will try to gain an initial experience with design and testing of a low noise stone mastic asphalt. We will set basic characteristics and at the same time compare with a standard stone mastic asphalt. For the comparison two various bituminous binders are used. The water sensitivity, resistance against rutting and stiffness moduli are compared.

This work solves creation of calibration relations to determine cube compressive strength, dynamic and static elastic modulus of alkali-activated concrete by non-destructive methods. Alkali-activated concrete is spoken of as a new material used in civil engineering. It shows different properties than normal concrete based on Portland cement. That's why the modification of common calibration relation seems necessary. Fresh concrete was made in the concrete plan ŽPSV a.s., Uherský Ostroh in three mixtures and always in the number of 18 cubes and 3 prisms. The samples were tested by impact hammer Schmidt type L, type N, SilverSchmidt PC-N and by ultrasound in 6 time periods of three specimens. After that, the cube compressive strength was determined. Status of static elastic modulus was determined in a time period of 28 days. The results are calibration relations to determine the progress of compressive strength and modulus of elasticity for each method and their combination.

This dissertation deals with the problematic of the free space optical link availability determination. For the presumption of the free space optical link unavailability we have to know statistical distribution of the atmospheric attenuations. In this work is also presented the measurement of these atmospheric attenuations with the specially designed optical link. Measurement is using switching of the two separate transmitters with wavelengths of 830 nm and 1550 nm. Presented statistic distribution let us determine the suitability of the link in the chosen locality during its design. Comparison of our measurement with other models like model based on the meteorological visibility is also presented. The last part of this work is focused on the preconditions for the hi-speed network bit error rate determination. Sample of the bit error rate measurement obtained by our designed bit error rate tester is attached.

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The Diploma thesis deals with the testing of electrically assisted turbochargers. Aim of this work is to apply the established way of the performance testing of conventional turbochargers for electrically assisted turbocharger. Part of this work is to create a program for the calculation of the observed characteristics of the turbocharger. The program is extended to the characteristics of the generator for electrically assisted turbocharger. The program will serve as a basic for control the data for tested motorsport applications.