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Development and computational fluid dynamics (CFD) simulation of cryostat thermal shielding for a portable high purity germanium (HPGe) gamma spectrometer
(Taylor&Francis, 2020)The effect of vacuum degradation in cryostat of a gamma spectrometer on the steady-state temperature of thermal shield and its efficiency are analyzed in this study. Considering the thermal load due to radiation, the thermal ... -
Development and validation of a CFD-enabled digital twin of a portable HPGe gamma spectrometer
(IOP Publishing, 2020-01-22)This paper presents the design of an easily portable spectrometer using high purity germanium (HPGe) detector – HandSpec. The key challenge in the design of a lightweight spectrometer is to minimize its heat losses so that ... -
WEB-site for physics ( electricity and electronics) learning
(Tartu Ülikool, 2017-05-17)The purpose of this work is to create a website to help teachers of a school or a gymnasium in the preparation of small trainings in physics. Also, in principle, the site can be used for other school subjects and communication ... -
Road Surface Recognition Based on DeepSense Neural Network using Time Series Accelerometer Data
(Tartu Ülikool, 2019)Nowadays, Smart devices plays a big role in our lives, especially in our daily activities. Therefore, Smartphones can be considered as one of the most interesting sensor for depicting our activities and our surroundings. ... -
Design and Implementation of a Cosmic Ray Muon Detector
(Tartu Ülikool, 2019)Research in the recent two decades has proven detection devices based on cosmic ray muons to be a viable safe alternative to detection technologies using artificial ionizing radiation. Furthermore, some scientific groups ... -
Investigation and Comparison of Kinetostatic Performance Indices for Parallel Mechanisms
(Tartu Ülikool, 2019)For as long as we have used robots there has also been ongoing research to allow us to use and improve efficiency of automation in our daily lives. As our knowledge about robots has largely improved, so has the complexity ... -
Using Star Identification Algorithms on ESTCube-2 Star Tracker
(Tartu Ülikool, 2019)This thesis estimates the feasibility and determines the expected performance characteristics of a star tracker for ESTCube-2 student satellite. It measures limiting magnitude for the ESTCube- 2 star tracker hardware and ... -
Human detection and distance estimation with monocular camera using YOLOv3 neural network
(Tartu Ülikool, 2019)Making machines perceive environment better or at least as well as humans would be beneficial in lots of domains. Different sensors aid in this, most widely used of which is monocular camera. Object detection is a major ... -
Õppematerjalid robotplatvormile Robotont
(Tartu Ülikool, 2019)Robootika on jõudsalt populaarsust kogunud ning seetõttu on suurenenud ka nõudlus robootikainseneride järele. Paljudes robootikafirmades otsitakse ROSi (Robot Operating System) oskusega inimesi, seega tuleks õpetada ROSi ... -
Kergliiklusvahendite jagamisteenuseks vajaliku positsioneerimismooduli loomine ja uurimine
(Tartu Ülikool, 2019)Kergliiklusvahendite jagamisteenust osutades on probleemiks nende asukoha teadmine, selleks on vajalik liiklusvahenditele lisada positsioneerimist võimaldav lisaelektroonika. Lõputöös käsitletakse probleeme, mis esinevad ... -
Optical Design of a Radiometrically Calibrated Miniature Earth Observation Imager
(Tartu Ülikool, 2019)In this thesis a diffraction limited optical design for a radiometrically calibrated miniature multispectral Earth observation imager is proposed and its performance analysed. The goal of the imager is to capture ... -
Software Development for Data Analysis in Vibration Testing
(Tartu Ülikool, 2019)Rocket launches are violent and involve harsh events such as vibrations and shocks. Every structural system has its own natural frequency. When the frequency of the external forces (shocks and vibrations) syncs up with the ... -
Imaging Simulator and Geometric Image Stitching for a Low Earth Orbit Satellite with High Spin Rates
(Tartu Ülikool, 2019)ESTCube-2 is a low-earth orbit satellite with the main mission of deploying and testing an electrically charged tether and a secondary mission of photographing ground vegetation. The tether deployment and maintaining its ... -
Experiment Design for a 3D Ghost Imaging Setup Utilizing a LinoSPAD Sensor
(Tartu Ülikool, 2019)High-resolution 3D-imaging is a rapidly developing field driven by the increasing sensing requirements of automation and robotics. Computational ghost imaging based 3Dimaging is an emerging technology, offering increased ... -
Deep Learning Based Automated Job Candidate Interview Screening
(Tartu Ülikool, 2019)Traditional way of recruitment process is challenging for both the candidate and the employer. To apply for a job, the candidate needs to prepare a CV. On the other hand, the employer needs to check all the submitted CVs ... -
Building an Efficient and Secure Software Supply Pipeline for Aerial Robotics Application
(Tartu Ülikool, 2019)Unmanned aerial vehicles (UAVs) used for wind turbine inspection need robust software testing and deployment strategies which go beyond the traditional pre-deployment validation on real hardware. The goal of this thesis ... -
Robust Solution for Extrinsic Calibration of a 2D Laser-Rangefinder and a Monocular USB Camera
(Tartu Ülikool, 2019)With today’s technological development, almost every robotic system such as UAVs, mobile robots or autonomous ground vehicles are equipped with LIDARs and cameras. These sensors provide data which can be used to estimate ... -
Development and performance analysis of the Network Time Protocol Server
(Tartu Ülikool, 2019)This Master thesis describes the process of building a simple network time protocol (NTP) server on a single-board computer for the Atomic clock at Tartu Observatory. It explains the terminology of NTP protocol and set up ... -
Avatud robotplatvorm Robotont
(Tartu Ülikool, 2019)Robootika osakaal maailmas on tõusmas ning suur osa sellest tuleneb teenindusrobootikas kasutatavatest mobiilsetest platvormidest, mis tingib erakordselt suure nõudluse robootika inseneride järele. Käesoleva magistritöö ... -
Ainekavade ja materjalide koostamine gümnaasiumiastme valikainetele „Programmeerimine keeles Java I“ ja „Programmeerimine keeles Java II“
(Tartu Ülikool, 2019)Bakalaureusetöö eesmärk on luua gümnaasiumiastmele sobivad ainekavad ning materjalid valikainetele „Programmeerimine keeles Java I“ ja „Programmeerimine keeles Java II“ ning viia loodud ainekavasid ning materjale kasutades ...
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