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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.
71

Evaluation of ROS and Arduino Controllers for the OBDH Subsystem of a CubeSat / Evaluation of ROS and Arduino Controllers for the OBDH Subsystem of a CubeSat

Ande, Rama kanth, Amarawadi, Sharath Chandra January 2012 (has links)
CubeSat projects in various universities around the world have become predominant in the study and research for developing CubeSats. Such projects have broadened the scope for understanding this new area of space research. Different CubeSats have been developed by other universities and institutions for different applications. The process of design, development and deployment of CubeSats involves several stages of theoretical and practical work ranging from understanding the concepts associated with communication subsystems, data handling subsystems to innovations in the field like implementing compatible operating systems in the CubeSat processors and new designs of transceivers and other components. One of the future trend setting research areas in CubeSat projects is the implementation of ROS in CubeSat. Robot Operating System (ROS) is aiming to capture the future of many embedded systems including Robotics. In this thesis, an attempt is made to understand the challenges faced during implementing ROS in CubeSat to provide a foundation for the OBDH subsystem and provide important guidelines for future developers relying on ROS run CubeSats. Since using traditional transceivers and power supply would be expensive, we have tried simulating Arduino to act as transceiver and power supply subsystems. Arduino is an open-source physical computing platform based on a simple microcontroller board, and a development environment for writing software for the board designed to make the process of using electronics in major embedded projects more accessible and inexpensive. Another important focus in this thesis has been to establish communication between CubeSat kit and Arduino. The major motivating factor for this thesis was to experiment with and come up with alternate ways which could prove as important measures in future to develop an effective and useful CubeSat by cutting down on development costs. An extensive literature review is carried out on the concepts of Arduino boards and ROS and its uses in Robotics which served as a base to understand its use in CubeSat. Experiment is conducted to communicate the CubeSat kit with Arduino. The results from the study of ROS and experiments with Arduino have been highly useful in drafting major problems and complications that developers would encounter while implementing ROS in CubeSat. Comprehensive analysis to the results obtained serve as important suggestions and guidelines for future researchers working in this field. / One of the future trend setting research areas in CubeSat projects is the implementation of ROS in CubeSat. Robot Operating System (ROS) is aiming to capture the future of many embedded systems including Robotics. In this thesis, an attempt is made to understand the challenges faced during implementing ROS in CubeSat to provide a foundation for the OBDH subsystem and provide important guidelines for future developers relying on ROS run CubeSats. Since using traditional transceivers and power supply would be expensive, we have tried simulating Arduino to act as transceiver and power supply subsystems. Arduino is an open-source physical computing platform based on a simple microcontroller board, and a development environment for writing software for the board designed to make the process of using electronics in major embedded projects more accessible and inexpensive.
72

Estandarización de procedimientos operacionales, especificaciones técnicas de materias primas y otros documentos para la industria de alimentos Dos en Uno S.A.

Gangas Castillo, Lorena Alejandra January 2005 (has links)
No description available.
73

Globalizace a OSN: Sociálně ekonomické aspekty miléniových cílů / Globalization and UNO: social economic aspects of MDG's

Frýdmanová, Tereza January 2008 (has links)
The content of the thesis is concentrated on the confirmation, that the poverty is the basic problem when balancing the global discrepancies. First part of the thesis is dedicated to globalization, its social economic impacts in the context of least developed countries and world poverty. The next part describes the MDG's from the point of view of poverty.
74

Jednofázový síťový wattmetr / Single-phase wattmeter

Kolouch, Petr January 2019 (has links)
This diploma thesis deals with wattmeters. The introduction is devoted to approach the issue. Subsequently, the principle of sensing of circumferential quantities, sampling theory and basic theory is explained. The next chapter discusses Arduino development kits. The practical part deals with the design of the circuit diagram and the printed circuit board. Further described is designed software. The final part tests the parameters of the designed power meter.
75

Nabíječka lithiových akumulátorů / Li-ion accumulators charger

Vrba, Marek January 2012 (has links)
The main target of this thesis is to design and realize a prototype of a high capacity battery charger. The charger has been designed as a switching power supply based on a Flyback convertor with two transistors. As switching transistors the integrated circuit IR2110 has been selected. The convertor is controlled by a microcontroller board based on ATMega328 called Arduino Uno; some parts of the Arduino Uno Starter Kit are also used as LCD display, relay and button. In addition, an auxiliary source has been made; this one powers the integration circuit IR2110 and Arduino Uno board. Furthermore, this work introduces us to the processes of charging lithium batteries, types of lithium batteries and methods of charging the lithium iron phosphate (LiFePO4) battery.
76

Ett steg bakåt, två steg framåt. : Att utveckla en pianotrio.

Bylund, Jakob January 2020 (has links)
In this thesis I will describe the process of working with a piano trio. The trio consisted of Jonny Ek on piano, Uno Dvärby on bass and, me, Jakob Bylund on drums. This process included choosing musicians, studying influences, rehearsing, and the selecting and arranging songs.  I will also reflect on my role as the drummer and band leader of the trio. The main purpose was to investigate what happens to a trio that does not only rehearse often, but also puts in a lot of work in to studying their role models, such as Oscar Peterson trio and Ahmad Jamal trio, by listening and transcribing arrangements played by them.  By using these methods, the trio hoped to achieve a greater understanding of what these references were actually playing, and using that knowledge to develop its own interplay, dynamics and sound.  The impact of role models is analyzed by comparing the Oscar Peterson trio and Ahmad Jamal trio to each other, and to my own trio, finding the uniqueness of each group as well as the similarities between them.  During this project I have learned a lot as a drummer, arranger and band leader. Because of our many rehearsals and the way we studied our role models, I have gained a deeper understanding of my tendencies when drumming. I’ve also learned that the drummer in a piano trio could determine the direction of the music with very subtle but efficient ways, and therefore has a lot of power and responsibility to take care of the music.  As a result of using these methods the trio managed to get a deeper understanding of why its role models sounded like they did and use that information to develop in their footprints. / <p>Jonny Ek - Piano.</p><p>Uno Dvärby - Kontrabas.</p><p>Jakob Bylund - Trummor.</p><p></p><p>"Where Or When" - Richard Rodgers</p><p>"Long Ago And Far Away" - Jerome Kern</p><p>"Black And Tan Fantasy" - Duke Ellington</p><p>"I Was Doing All Right" - George Gershwin</p><p>"In The Wee Small Hours Of The Morning" - David Mann</p><p>"Avalon" - Al Jolson, Buddy DeSylva, Vincent Rose</p><p>"Con Alma" - Dizzy Gillespie</p><p>"It's Only A Paper Moon" - Harold Arlen</p><p>"Easy Living" - Ralph Rainger</p>
77

GPS Tracking Device

Shami Jamil, Ivet January 2022 (has links)
The project was performed in collaboration with the company Prevas AB. The aim of the project was to implement a GPS tracking device, or a GPS tracker, that has a hardware setup retrieving the GPS position of an object and then sends the position through a mobile communication module to a smartphone. A software application running on a smartphone simulator was developed to visualize the position with a Google map widget. The hardware unit consists of a GPS/GSM/GPRS module, a microcontroller, and a smartphone simulator that runs the software application made for iOS, Android and Linux operating systems using Flutter - an UI multi-platform software development kit. Implementation of the setup started with a Telit GM862 GSM/GPRS/3G-GPS module (together with a SmartGM862 development board), an Arduino UNO microcontroller board and a logical level converter. This first setup was not successful because a problem with the serial communication between the Telit GSM-GPS module and the Arduino could not be solved.  The second setup was implemented in which an Arduino GSM/GPRS/GPS shield was used with the Arduino board. The serial communication between the shield and the Arduino was functioning properly and a GPS position could be retrieved. The GPS position is published (sent) using a lightweight messaging protocol - MQTT (messaging queuing telemetry transport) through GPRS functions to the smartphone of the destination user.  To visualize the GPS position in a Google map, an Object Tracker app was implemented on the smartphone simulator app (an iPhone in this project) that subscribes and retrieves the GPS position, and then displays it on the map with a red marker indicating the position.  The GPS tracker with the second setup and the app has been tested and proved to work properly. It has, however, much room for improvement and further development, e.g., making the app more user-friendly, and designing and making a PCB so all the components are mounted on one board. It has been noticed in an initiated test that the GPS antenna placement could affect  positioning accuracy. This, thus, needs to be considered for high accuracy.
78

Sun Tracking System

Dandu, Sai Charan Reddy, Sarla, Anish January 2022 (has links)
Solar energy is a clean energy source which has a minimal impact on the environment than other forms of energy. Solar energy is now widely used in a variety of applications. Although solar energy is widely used, the efficiency of converting solar energy into electricity is insufficient since most solar panels are installed at a fixed angle and the fixed solar panels do not aim directly towards the sun due to the earth’s constant motion. Solar panels are very expensive for families or businesses that consume more energy than usual, as they require several solar panels to generate enough power. The main objective of this project is to build a working model so that to increase the efficiency of power output taken from solar panel by continuously tracking the sun’s rays through out the day and aligns the solar panel orthogonal to the sun. To develop a model that benefits people by producing more solar energy with fewer solar panels. In order to overcome this problem we come up with a solution through Arduino Uno system which consists of four LDR sensors which are responsible for the detection of the light intensity of the sun’s rays. Two micro servo motors are used for movement of the solar panel in azimuth and elevation direction since it is a dual axis tracking system. A solar panel is the core part we use in this model for the conversion of solar energy into electrical energy. The LCD displays shows the power output of the solar panel. The proposed system is a dual axis tracking system that actively tracks solar radiation and adjusts the panel so that the sun’s rays are perpendicular to it, maximizing the solar panel’s power output. The LCD display shows the power output of the solar panel. By this project, we can say that dual axis tracking system we built can track the sun’s rays and increases the power output of solar panel. The manual effort for changing the solar panel according to the sun position can be avoided.
79

Gewaltfrieden nach dem Willen der einzigen Weltmacht?: Wege aus der Gefahr: Beiträge zum 11. Dresdner Friedenssymposium am 22. Februar 2003

25 July 2022 (has links)
Das 11. Dresdner Friedenssymposium diskutierte Geopolitik und Irak-Krieg der USA sowie die Demokratisierung des Sicherheitsrats der Vereinten Nationen.:○ Einführung von Steffi Belke. ○ Symposiumsbeitrag von Max Schmidt: Sicherheit durch Sicherheitsrat? Kann der Sicherheitsrat der Vereinten Nationen demokratisiert werden? ○ Aus der Diskussion: •  Peter Strutynski: Die USA sind nicht allmächtig. Kriegsvorbereitungen mit unerwarteten Hindernissen. • Kadhim Habib: Gegen den Krieg und das despotische Regime im Irak. • Horst-Dieter Strüning: Kritische Anmerkungen zum Diskurs US-amerikanischer und deutscher Intellektueller über das Thema gerechter Krieg. • Ernst Woit: Das Gewaltverbot der UNO-Charta und die aktuelle Praxis der UNO. • Horst Großmann: Der Irak und die Geopolitik der USA • Lorenz Knorr: Alternativen zur Neuen Weltkriegsordnung erforderlich. • Horst Schneider: Geschichtsbild und Friedenspflicht. • Dieter W. Scheuch: Not in my name, NO WAR ON IRAQ. • Elke Renner: Gegen einen Irak-Krieg. Ein Diskussionsbeitrag aus Österreich.
80

Distance Estimation of Two Distance Sensors

Vamsi Bhargav, Kamuju, Aditya Pavan Kumar, Yenuga January 2022 (has links)
In modern world sensors play important role where they help to acquire information about the procecess, such as temperature, velocity,distance, etc. Based on this information acquired from the sensorsdecisions can be made, for example to increase heating in the buildingor accelerate the car.In many cases, a single sensor type cannot provide enough information for complex decision making, for example, when the physicalproperties of the process are outside of the measurement range of thesensor. As a result, in order to achieve desired performance levels, acombination of sensors should be used in an integrated manner.Sensor generated data need to be processed into information throughthe use of appropriate decision making models in order to improveoverall performance. Here we compare two sensors which are shortrange and long-range sensor. We use a short-range and long-rangesensor, and calculates the distance from both sensors to the same object by using Arduino UNO microcontroller. The sensors that we usein our work have overlapping or common interval in their measurementranges. Therefore we investigated how we can make a decision aboutthe distance to an object when the acquired data from both sensors isin that common range.

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