1. Parallel self-avoiding walks for a low-autocorrelation binary sequences problemBorko Bošković, Jana Herzog, Janez Brest, 2024, izvirni znanstveni članek Opis: A low-autocorrelation binary sequences problem with a high figure of merit factor represents a formidable computational challenge. An efficient parallel computing algorithm is required to reach the new best-known solutions for this problem. Therefore, we developed the sokol solver for the skew-symmetric search space. The developed solver takes the advantage of parallel computing on graphics processing units. The solver organized the search process as a sequence of parallel and contiguous self-avoiding walks and achieved a speedup factor of 387 compared with lssOrel, its predecessor. The sokol solver belongs to stochastic solvers and cannot guarantee the optimality of solutions. To mitigate this problem, we established the predictive model of stopping conditions according to the small instances for which the optimal skew-symmetric solutions are known. With its help and 99% probability, the sokol solver found all the known and seven new best-known skew-symmetric sequences for odd instances from to . For larger instances, the solver cannot reach 99% probability within our limitations, but it still found several new best-known binary sequences. We also analyzed the trend of the best merit factor values, and it shows that as sequence size increases, the value of the merit factor also increases, and this trend is flatter for larger instances.
Ključne besede: low-autocorrelation binary sequences, self-avoiding walk, graphic processor units, high performance computing
Objavljeno v DKUM: 22.08.2024; Ogledov: 45; Prenosov: 18
 Celotno besedilo (1,82 MB)
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2. The development of ARM-based portable and adaptable power supply : magistrsko deloTomislav Brlek, 2019, magistrsko delo Opis: This master’s thesis describes a development of a portable and adjustable power supply. The first part of the thesis introduces us to the working principle of power supplies in general. Next, we present a functional design of a portable and adjustable power supply and a list of its required functionalities. Chapter “switched-mode power supplies” introduces us to the theoretical basics of the said power supplies, while chapter “linear regulators” introduces us to different types of linear regulators and tells us more about how they work. Everything regarding which microcontroller was used and why it was used is described in the “ARM microcontroller” chapter. Besides microcontrollers, it also talks about which integrated development environment is used and how the microcontroller is programmed. A full and detailed description of each part of the analog circuitry can be found in the chapter “describing the development of the portable and adjustable power supply”. Lastly, the user interface is described in detail.
Ključne besede: portable power supply, ARM processor, variable laboratory bench power supply, LCD touchscreen, energy efficient, lithium battery, battery charger, voltage control
Objavljeno v DKUM: 13.11.2019; Ogledov: 1164; Prenosov: 152
Celotno besedilo (3,85 MB) |
3. Development of RFID/NFC based access control systemDarko Topić, 2018, magistrsko delo Opis: The master thesis describes the development of NFC/RFID access control system based on the ARM platform. The access control system is widely used in different applications. The goal of this thesis is to develop a smart NFC access control system used for accessing an elevator, where users could use only NFC tags to access a specific floor. The design of the proposed NFC access control system is based on the ARM platform, while the developed NFC antenna guarantees wide scanning range. At the end of the thesis the results are presented.
Ključne besede: access control system, RFID, NFC, MIFARE, ARM processor, embedded system, short-range communication, contactless communication, ISO/IEC 14443
Objavljeno v DKUM: 23.05.2018; Ogledov: 5441; Prenosov: 684
Celotno besedilo (7,51 MB) |
4. Development of smart energy meter using arm platformDarijo Topić, 2017, magistrsko delo Opis: This master thesis describes the development of smart electricity energy meter on the ARM platform. In general, the commercial electrical energy meters are measuring only the total active energy, therefore, users cannot also monitor other important power consumption parameters. The goal of this thesis is to develop a prototype of smart ARM based energy meter, which is capable to measure several power consumption parameters and display them on a webpage in real-time. In the thesis the complete design of the ARM based smart energy meter is presented in detail. Further, the development of user interface for displaying measured data on the webpage in real-time is also presented. These results are presented both in textual and graphical form. Additionally, the theory of electric power consumption measurements and some commercial energy meters are presented.
Ključne besede: energy meter, ARM processor, power consumption, internet of things, calibration, green environment, energy consumption measurement, emoncms
Objavljeno v DKUM: 16.11.2017; Ogledov: 2417; Prenosov: 292
Celotno besedilo (5,10 MB) |
