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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
451

En entreprenöriell studie av återkopplingsprocessen för tester som understöds av en eventuell adoption av ett CRM-system eller användning av befintlig CRM-modul : En fallstudie inom triaden Swedev AB, en återförsäljare och återförsäljarens kund / An Entrepreneurial Study of the Feedback Process for Tests Supported by a Possible Adoption of a CRM System or Use of an Existing CRM Module : A Case Study within the Triad of Swedev AB, one Retailer and the Retailer’s Customer

Moss, Felicia January 2024 (has links)
För att företag idag ska klara av den hårda konkurrensen på marknaden, tillhandahålla och skapa produkter som är framgångsrika, är återkopplingar från kunder på produkter både viktigt och värdefullt för företagen. Det är inte alltid enkelt att få in återkopplingar från kunder, vilket specifikt gäller B2B2C- företag som inte har någon direktkontakt med kundens-kund. För att samla in, hantera och bearbeta återkopplingar från kunder behövs i högre grad relevanta insamlingstekniker och systemstöd för arkivering av informationen. Adoption av kundrelationshanteringssystem (CRM-system) möjliggör för företagen att hantera återkopplingar från deras kunder, men också för att hantera sina företagsrelationer i stort, vilket blir extra viktigt i B2B2C-kontexter. Adoption av CRM-system är riskfyllt och ställer höga krav på företagen, vilket medför att det är extra viktigt att utforska och analysera de befintliga systemen innan beslut om adoption av ett nytt system fattas. För utveckling och förändringar av verksamheters affärsprocesser oavsett om det gäller adoption av nya system, användning av befintliga system eller förändringar i arbetssätt – är processkartläggningar ett användbart tillvägagångssätt för att identifiera nu-läget, för att därefter ta fram förbättringsförslag.  Syftet med denna kandidatuppsats i informatik är att identifiera, kartlägga och beskriva återkopplingsprocessen för tester mellan fallföretaget–återförsäljaren–återförsäljarens kund och genom en entreprenöriell ansats identifiera och presentera ett bör-läge och förslag till förbättringar av processen, som understöds av en eventuell adoption av ett CRM-system eller användning av befintlig CRM-modul hos fallföretaget.  För fallstudien har en entreprenöriell ansats valts, med målet att ge förbättringsförslag utifrån nu- läget mellan fallföretaget, en återförsäljare och återförsäljarens kund. Fem kvalitativa SPIN-intervjuer har genomförts med tre rollinnehavare hos fallföretaget, och en rollinnehavare vardera hos en återförsäljare och en kund till återförsäljaren. SPIN-intervjuerna och kunskaper hämtade från teori och tidigare studier har legat till grund för de MVP-prototyper som tagits fram som förbättringsförslag, vilka har testats och säkerställts i två omgångar.  De tre viktigaste slutsatserna från studien är att med hjälp av processkartläggningar av företagens affärsprocesser är det möjligt att identifiera problem och möjligheter för att utveckla eller skapa mer produktiva och ändamålsenliga processer. En annan viktig slutsats är betydelsen av att utforska och analysera företagens befintliga system innan beslut om adoption av nytt system fattas. Till sist är det viktigt att genomföra både interna och externa möten och utbildningar, för att ta vara på i högre grad värdefulla kunskaper från externa partners och utveckla de interna kunskaperna.
452

Dynamická analýza koleje / Dynamic analysis of track

Mojžíšek, Dominik January 2018 (has links)
The diploma thesis deals with descriptions of vehicle - track dynamic interface. There are described basic analytical models of railway track. The numerical models are created by using finite element methods with moving load simulated axle of rail vehicle. The aim of thesis is to create the model which most accurately describes the dynamic phenomena in the track. The results from models are compared with data obtained by measuring in the track. Next aim of thesis is to determine dependency of rail cross-sectional characteristics on equivalent rail head wear and then on rail deflection.
453

Měření parametrů pneumatik / Tyre Parameters Measurement

Pokorný, Pavel January 2012 (has links)
It is the tyre that ensures the interaction between a wheel and road surface and it is the the tyre which also acts as a primary cushioning. Its construction, features and condition highly influence driving properties of a car and thus passenger safety as well. In motorsports the tyre is a key part of the vehicle and therefore it is necessary to make use of its complete potential for reaching the best results. The aim of this thesis is a device construction suitable for tyre parameter and their characteristics measurement. The next task is to design a measuring system for tyre pressure and temperature monitoring. With using of these devices a few real-tyre measurements and subsequent result evaluation will be done. The output of the thesis is an overview of construction details, overview of selected tyre parameters, design and drawing documentation of multipurpose measuring device and the results of my measurements.
454

Návrh a analýza systémů pokročilého zabezpečení a střežení objektů a prostor / Design and Analysis of Systems for Advanced Guarding and Securing Objects and Areas

Komínek, Petr January 2011 (has links)
This diploma thesis deals with design, realization and analysis of security and surveillance systems for buildings and spaces containing advanced components. One of the main design's parts is dedicated to intruder alarm system, access system, attendance and CCTV systems with the possibility of automatic motion tracking. Controlling and monitoring of particular subsystems is possible both locally and remotely from a computer via a web interface or by means of a software. The access to camera system from a mobile phone is also possible. IAS/ACS systems also enable controlling and transferring information about their state via SMS. The designed system was realized completely and its operating was demonstrated. The realization is described in detail including illustration of configuration of particular components. A security analysis and a possible future development of the project is summarized in the conclusion.
455

Grafické intro 64kB s použitím OpenGL / Graphics Intro 64kB Using OpenGL

Geršl, Jan January 2008 (has links)
The field of this project is size restricted graphic intro. The paper deals with motivation creating such an intro and talks briefly about history. Main focus is put on general description of various principles common in demo development, techiques used achieving the practical assignment are provided with more detailed description.
456

Dolování z dat v prostředí informačního systému K2 / Data Mining in K2 Information System

Figura, Petr Unknown Date (has links)
This project was originated by K2 atmitec Brno s.r.o. company. The result is data mining module in K2 information system environment. Engineered data module implements association analysis over the data of K2 information system data warehouse. Analyzed data contains information about sales filed in K2 information system. Module is implementing consumer basket analysis.
457

Nová Jižní čtvrť a její propojení s řekou Svratkou / New South District and its Connection to Svratka

Nedbalová, Monika January 2019 (has links)
Brno has been considering moving the Main railway station for several decades. Countless urban plans have been done through several competitions, the new South District, which will be located north direction of today's Dolní nádraží station in the future. The architectural study, which was the subject of this diploma thesis, designs multifunctional object called Platform. The building could become part of the emerging South District. The base for the architectural study of the Platform was urban concept of South District designed by me as a pre-diploma thesis. The significance of the South District is comparable to the new Main Railway Station in Vienna surrounded by new district. Those opportunities were the foundation for designing compact urban structure with great variability of public spaces and buildings themselves. The new building is located on the Route of experiences, which is an alternative lane to the main boulevard from the Main Station to the centre of Brno. That starts at the railway station, leads through South District and its main square, the waterfront, through the islands of Svratka, to the park next to the river. Lane continues to the rediscovered railway viaduct and further to today's Main railway station. The viaduct was an inspiration for the architectural design, in the sense of material and shape. The mass of the building itself is divided horizontally into two parts. The lower, heavy masonry brick part of the market is visually separated from the upper objects that seem to levitate above the market. These three upper masses grow from the green roof of the market. Their function is already evident due to their facades. Upper part belongs to the two apartment buildings with a regular grid of south-west orientated windows and one coworking facility located in the northern corner of the Platform. The location of the building is significant. The views from the Platform are amazing - one side there is the Svratka River with island
458

BRNO - ŠPITÁLKA_SMART CITY / BRNO - SPITÁLKA_SMART CITY

Šmídová, Lucie Unknown Date (has links)
The diploma thesis deals with the future smart district at Špitálka in Brno - Zábrdovice. The smart district will serve as a pilot territory to verify the goal setting from the vision for the #brno2050 strategy. One of the main motives is the activation of the territory by means of relevant interventions, which can start the development not only of this area, but can also have a positive impact on the entire locality. The aim of the diploma thesis is to contribute to the preparations for the revitalization of the city district and to outline possible alternatives for the phasing of development, the method of activating the territory and temporary use during the realization process. Further contribute to the discussion about cooperation public sector with private, community planning in our environment and the possibility of alternative project financing. The proposed tactics correspond to the local significance, are based on current values and lead to a sustainable urbanization process of an evolving urban environment. The work is analytically based on the current criteria of the urban environment generated by the investments of capitalist society. The proposal focuses on areas related to performative planning or an experimental form of so-called bottom-up planning and supports the principles of Smart City.
459

Untersuchung des Modularen Mehrpunktstromrichters M2C für Mittelspannungsanwendungen

Rohner, Steffen 07 June 2011 (has links) (PDF)
Die vorliegende Arbeit behandelt den Modularen Mehrpunktstromrichter M2C, der eine aufstrebende Mehrpunktstromrichtertopologie im Mittelspannungs- und Hochspannungsbereich ist. Die modulare Struktur des Stromrichters enthält in einem Stromrichterzweig eine Reihenschaltung aus identischen Submodulen (Zellen) und einer Spule. Der gesamte Stromrichter ist aus sechs Zweigen aufgebaut. Somit hängt die Anzahl der Spannungsstufen in den Leiter-Leiter-Spannungen von der zunächst beliebigen Anzahl der Submodule ab. Zur Untersuchung dieser komplexen Stromrichtertopologie werden zwei Simulationsmodelle hergeleitet: das kontinuierliche Modell und das diskrete Modell. Dafür wird das elektrische Schaltbild durch ein gewöhnliches Differenzialgleichungssystem beschrieben, wobei die Schaltzustände der Leistungshalbleiter durch sogenannte Schaltfunktionen abgebildet werden. Das kontinuierliche Modell verwendet Schaltfunktionen, die Werte in einem kontinuierlichen Intervall annehmen können. Bei Vorgabe der Zweigströme und Sternpunktspannung können die Lösungen der anderen Systemgrößen analytisch berechnet werden. Für den allgemeinen Fall ist dies numerisch möglich. Im Gegensatz dazu verwendet das diskrete Modell diskrete Schaltfunktionen. Es wird durch numerische Integrationsverfahren mit dem Schaltungssimulator MATLAB/Plecs simuliert. Eine spezielle Eigenschaft dieses Stromrichters sind seine inneren, an den Ein- und Ausgangsklemmen nicht messbaren Ströme: die sogenannten Kreisströme. Diese Stromanteile werden erstmalig mathematisch im Zeitbereich definiert und die Harmonischen hergeleitet, die sich für einen symmetrischen Betrieb des Stromrichters ergeben. Für das diskrete Modell wird eine Zweigstromregelung implementiert. Die Anfangswerte der Spulen und Kondensatoren werden durch die analytischen Gleichungen des kontinuierlichen Modells so berechnet, dass sich der eingeschwungene Zustand ergibt. Der M2C besitzt keinen großen, sondern viele verteilte Energiespeicher: die Submodulkondensatoren. Die gespeicherte Energie sollte symmetrisch verteilt sein. Dafür werden drei Möglichkeiten der Energieänderung hergeleitet und deren Effektivität gezeigt. Eine andere Untersuchung betrifft die Stromaufteilung innerhalb der Submodule auf den jeweils oberen und unteren Leistungshalbleiter. Dabei wird die Stromaufteilung für verschiedene Phasenwinkel und Kreisströme gezeigt. Der Einfluss der schwankenden Kondensatorspannungen auf die Leiter-Leiter-Spannungen sowie die Anzahl der Spannungsstufen in den Leiter-Leiter-Spannungen werden mit dem diskreten Modell untersucht. Die Genauigkeit der Simulationsmodelle wird mit Hilfe eines Prototyps des M2Cs überprüft, der von der Fa. Siemens entwickelt wurde. Es werden charakteristische Strom- und Spannungsverläufe gemessen und den simulierten Verläufen der beiden Simulationsmodelle gegenübergestellt. Die Auslegung des Leistungsteils gliedert sich in die Auslegung der Submodulkondensatoren und die der Leistungshalbleiter. Zuerst wird die Kapazität der Submodulkondensatoren auf der Grundlage von drei verschiedenen Kondensatorspezifikationen mit Hilfe eines iterativen Algorithmus minimiert. Dies wird sowohl für kreisstromfreie als auch für optimierte kreisstrombehaftete Betriebsweisen mit dem kontinuierlichen Modell durchgeführt. Im nächsten Schritt werden die Leistungshalbleiter mit dem diskreten Modell dimensioniert. Dafür wird ein Stromfaktor definiert, der eine ideale Parallelschaltung von mehreren Leistungshalbleitern beschreibt. Die Verluste, die Verlustverteilung sowie die Sperrschichttemperaturen in den Leistungshalbleitern für verschiedene Phasenwinkel zeigen das Verhalten des Stromrichters in verschiedenen Arbeitspunkten. / This thesis deals with the Modular Multilevel Converter M2C, an emerging and highly attractive multilevel converter topology for medium and high voltage applications. One of the most significant benefits of the M2C is its modular structure - the converter is composed of six converter arms, where each arm consists of a series connection of identical submodules (cells) and an inductor. Thus, the number of distinct voltage levels available for the line-to-line voltages is proportional to the number of submodules, which is in principle arbitrary. For the investigation of this complex converter topology, two simulation models - a continuous model and a discrete model - are derived. For this purpose, the electrical circuit is described by a system of ordinary differential equations where the switching states of the power semiconductors are represented by the so-called switching functions. The continuous model results from the analytical solution of the differential equations with a continuous interpretation of the switching functions. In contrast, the discrete model uses discrete switching functions and is computed using numeric integration methods with MATLAB/Plecs. One aspect of particular significance with the M2C is the topic of inner currents: the so-called circulating currents. In this thesis, these current components are defined mathematically in the time domain for the first time and the harmonics of the circulating currents for symmetrical operation of the converter are derived. For the discrete model, closed-loop control of the arm currents is implemented. Initial values for the inductors and capacitors are derived using the analytical equations of the continuous model. The M2C has several distributed energy storage elements: the submodule capacitors. The stored energy must be distributed evenly amongst these capacitors. To achieve this, three methods of energy distribution are presented. Another focus of this investigation is the current sharing between the upper and lower power semiconductor within the submodules. For different load phase angles and circulating currents, the current distribution is depicted. The influence of the floating capacitor voltages on the line-to-line voltages as well as the of number of discrete voltage levels in the line-to-line voltages are investigated with the discrete model. The accuracy of the simulation models is verified by experimentation with a prototype of the M2C from the company Siemens. The experimental results are compared with simulation results from the two simulation models. The dimensioning of the power components of the elecrical circuit is divided into two parts: the first for the submodule capacitors and the second for the power semiconductors. Initially, the capacitance of the submodule capacitors are minimized by an iterative algorithm on the basis of three different capacitor specifications. This computation is done using the continuous converter model for converter operation neglecting circulating currents and with optimized circulating currents. In the next step, the power semiconductors are dimensioned using the discrete model and assuming a defined current factor, which describes the ideal parallel connection of several semiconductors. The losses, the loss distribution, and the junction temperatures in the power semiconductors for different load phase angles describe the behavior of the converter for different operating points.
460

Charakterizace vlastností fotovoltaického systému / Characteristic of photovoltaic system

Pokorný, Marek January 2011 (has links)
The aim of this work is informed first about photovoltaics universally, works to inform the photovoltaic panels and complete plants. The work also includes instructions on how to implement PVP in accordance with law. Another part is the rough draft of the photovoltaic power 30 kWp, which can be placed on the house, computation and calculation of investment and them profitable investments to time. Design is made in two separate forms of the Fronius Solar and Sunny Design, their outputs are compared. The practical part of this work cooperates with the company SOLARTEC Ltd. for experimental measurements of the photovoltaic system and develop a methodology for setting the properties of real solar systems in operation from the measured data then stored in a database. These data further evaluate and compare the similar operating conditions. This data will show as the course of production of electricity during the typical day in percentage terms, depending on the incident irradiance, cell temperature, angle of incident radiation, etc. We can compare what it looks like an ideal day in terms of production of photovoltaic power, with the other days. Further are in work mentioned histograms achievement panel behind classical day and behind all - time investigation.

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