This master thesis deals with the design of complex security system for company area with using PZTS and CCTV system. The thesis is divided into three separate parts, first part is focused on analysis the company and the current physical security state. Second part of thesis deals with theoretical bases. And the final part covers the concept of the PZTS and CCTV system solution. Here are all the chosen elements which will be used for realization

This diploma thesis deals with the hand gesture detector. Theoretical part is devoted to the discussion of current segmentation and detection methods. They were chosen those, which would work best as the controlling methods of multimedia player. The proposed algorithm is described with the help of flowcharts. Detector is written in Java language with the use of OpenCV library. Background subtraction segmentation method and convex hull approximation are used for gesture detection. Detector can distinguish between six gestures and track the center of palm. Finally, the detector was connected with proposed and implemented document, image and multimeda files browser.

The thesis brings a project and an implementation of an interactive board game. The implementation can be divided into a detection part and a projection part. Detection, realized by an infra-red camera, serves as a means for recording players' responses. The players interact with the game through simple hand gestures. Projection screens a game plan, which includes the players' figures, on the table with the help of a data projector. The game chosen for projection is a role-playing game Dungeons & Dragons.

Title: Experiments supporting the teaching of thermodynamics at high school level Author: Petr Kácovský Department: Department of Physics Education Supervisor: doc. RNDr. Zdeněk Drozd, Ph.D., Department of Physics Education Abstract: This doctoral thesis is aimed at chosen aspects of teaching of thermodynamics on high school. The thesis can be divided into two main parts: The research part deals with investigation of typical students' conceptual difficulties in the field of thermal phenomena and its primary goal is to identify the most distinctive misconceptions of observed population. More than 500 students were questioned using a conceptual test both as pretest and posttest; approximately half of them also participated in the retention test which took part two years after pretest. The results of the conceptual test are connected with data obtained on the basis of the simultaneously conducted research of students' attitudes. The developmental part of the thesis - partly inspired by previous misconception research - deals with arranging, documentation and testing of experiments relevant to teaching of thermodynamics. In total, 46 experiments were arranged, students-tested and published in the electronic Collection of Physics Experiments. These experiments are primarily intended for teachers as inspiration...

This thesis focuses on an experimental study of the anode area of the hybrid water- gas DC arc plasma torch that is used in many industrial applications, including plasma spraying, hydrocarbon reforming, pyrolysis, and organic waste gasification. The effects of ambient pressure and plasma generation conditions on the torch's plasma jet were studied, with particular focus on the torch's anode area. Movement of the anode arc attachment is described in detail, including its speed, range of its motion on the anode surface, restrike periods, and the frequency of its many sudden decelerations and re-accelerations. It was found that the anode erosion can be compared relatively simply by quick processing of high-speed camera videos. The anode erosion was also measured directly. Many electric probe measurements were made in the anode area of this plasma torch for the first time. By using these electric probes, shock waves, turbulent vortices, and plasma potential fluctuations were studied directly. It was found that a mean plasma electric field and a mean plasma electrical conductivity in the anode area can be satisfactorily estimated also non-intrusively by quick processing of high-speed camera videos. Moreover, schlieren videos of the plasma jet in the anode area were created. 1

Bildsensoren mit integrierter Signalverarbeitung - sog. "Vision Chips" - ermöglichen die Ausführung ansonsten rechenintensiver Verarbeitungsschritte während oder unmittelbar nach der Bildaufnahme. Gegenüber konventionellen CMOS-Bildsensoren, die sich vor allem durch eine gute Bildqualität auszeichnen, werden die auszugebenden Daten bereits auf dem Chip auf relevante Informationen beschränkt und lediglich extrahierte Merkmale anstelle vollständiger Bilder ausgegeben. Vision Chips ermöglichen somit eine sehr hohe Bildwiederholrate bei gleichzeitig deutlich niedrigeren Anforderungen bzgl. der Übertragungsbandbreite und sind insbesondere für die Beobachtung sehr schneller Prozesse attraktiv. Obwohl das Konzept der gemeinsamen Betrachtung von Bildaufnahme und -verarbeitung bereits in den Anfangsjahren der Halbleiter-Bildsensoren aufgegriffen wurde, können die meisten beschriebenen Sensoren als Machbarkeitsnachweise für bestimmte Pixelzellen- bzw. Bildverarbeitungstechnologien betrachtet werden. So finden sich, bis auf den in der optischen Maus eingesetzten Sensor zur Bestimmung der Verschiebung relativ zum Untergrund, nur für sehr wenige Sensoren Hinweise auf einen kommerziellen Einsatz. Neben einer geringen optischen Auflösung und einer eingeschränkten Empfindlichkeit können der Verzicht auf integrierte Steuerwerke und die erhebliche Komplexität bzgl. der Programmierung als wesentliche Hindernisse für einen breiten Einsatz genannt werden. Im Rahmen dieser Arbeit werden wesentliche Beiträge zu der zum Einsatz von Vision Chips in realen Aufgabenstellungen erforderlichen Infrastruktur geliefert. So wird zur Ansteuerung der einzelnen Funktionseinheiten (Functional Unit, FU) zunächst das Konzept eines integrierten, Multi-ASIP (Application Specific Instruction-set Processor) basierten Steuerwerks erarbeitet, das durch die Bereitstellung mehrerer Kontrollflüsse die Ansteuerung paralleler FU ermöglicht. Die praktische Umsetzung des Konzepts in Hardware erfolgt als Bestandteil eines Vision-System-on-Chip (VSoC). Dieses verfügt gegenüber dem Stand der Technik über eine höhere Auflösung sowie eine größere Empfindlichkeit und bildet die Grundlage der weiteren Betrachtungen. Eine umfangreiche Simulationsumgebung ermöglicht Untersuchungen implementierter Algorithmen sowohl hinsichtlich zeitabhängiger Effekte als auch bzgl. der Auswirkung einzelner, in Bildaufnahme- und Verarbeitung gezielt eingebrachter Fehler und Nicht-Idealitäten. Die zum Betrieb des VSoC erforderliche Entwicklungs- und Kameraplattform ist sowohl für den Einsatz unter realen Bedingungen als auch zur Entwicklung von Bildverarbeitungsaufgaben geeignet und ermöglicht dabei die transparente Nutzung der Simulationsumgebung komplementär zur eigentlichen Hardware. Zur Erschließung der vom VSoC bereitgestellten Funktionalität für tatsächliche Aufgabenstellungen erfolgt die ganzheitliche Betrachtung einer Bildverarbeitungsaufgabe bestehend aus VSoC-basierter Vor- und konventioneller Nachverarbeitung in Form sog. "Vision Tasks". Zur Vereinfachung der Implementierung werden parametrierbare Skeletons bereitgestellt, in denen generelle Abläufe zur Bildaufnahme und -verarbeitung hinterlegt werden. Basierend auf den entwickelten Konzepten werden schließlich mehrere Anwendungsbeispiele umgesetzt.

Idag blir det vanligare och vanligare att system såsom kameror eller kylskåp är eller har kapabiliteten att vara anslutna till internet och kommunicera över nätet av sig själva, så kallade IoT-system. Att ett system är anslutet till internet innebär att risken för angrepp på systemet ökar, och att systemet, om infekterat, har potentialen att kommunicera med omvärlden för att exempelvis utföra denial-of-service-attacker. Detta examensarbete undersöker säkerheten hos en internetansluten kamera (IP-kamera). Målet är att identifiera sårbarheter, och om möjligt, utveckla angrepp som utnyttjar sårbarheter hos kameran, för att testa säkerheten hos systemet. Resultatet visar att systemet är sårbart för ett antal olika angrepp, främst man-in-the-middle och cross-site-request-forgery. / Today systems such as cameras or fridges with the capability of being connected to the internet and communicating without human intervention are becoming increasingly common, so called IoT-systems. A system being connected to the internet means that the system’s attack surface is increased, and the system can, if infected, be used by the attacker to communicate with the outside world to perform denial-of-service- or other types of attacks. This thesis examines the security of an internet connected security camera, (IP-camera). The aim is to identify vulnerabilities in the system, and if possible to develop attacks that exploit these vulnerabilities in the goal of evaluating the security of the system. The results show that the system is vulnerable to some attacks, mainly including man-in-the-middle aswell as cross-site-request-forgery based attacks.

Solar-blind Ultraviolet cameras are used to detect missile plumes and perform the detection of corona on high voltage electrical lines. This study investigates the influence of the spectral transfer function of a specific solar-blind Ultraviolet camera upon Ultraviolet energy measurement results. In addition to the spectral transfer response investigated, is the influence of other related factors, including the specific camera operation and design. The possibility that the particular camera‟s measurements are being influenced by its own spectral transfer function, is initially investigated by using a simplified model. The objective of the model was to determine if the hypothesis is possible. In addition to the spectral transfer function of the camera, other factors that could influence camera measurements were also investigated in the literature. Included are highlights from other research conducted utilising this type of camera for high voltage electrical purposes, as well as comments for further research. Subsequently experiments were executed to characterise the camera, including the determination of the spectral transfer function of the specific camera, taking into considering limitations of the camera and related equipment. Derived from the spectral transfer of the camera and the other experiments and literature, a proposed method of calibration is presented, as well as suggestions for the improvement of the camera and better utilisation thereof. / Son-blind ultraviolet kameras word gebruik om missiel uitlaat gasse sowel as korona op hoogspannings kraglyne op te spoor. Die studie ondersoek die invloed van die spektrale oordragfunksie van „n spesifieke son-blind ultraviolet kamera op ultraviolet energie meetingsresultate. Addisioneel tot die spektrale response geondersoek, is die invloed van ander verwante faktore op metings insluitend die spesifieke kamera se werking en ontwerp. Die moontlikheid dat die spesifieke kamera se metings beïnvloed word deur sy eie spektrale oordragfunksie, word aanvanklik eers ondersoek aan die hand van ‟n eenvoudige model. Die doel van die model is om te bepaal of die hipotese moontlik is. Addisioneel tot die spektrale oordragfunksie van die kamera, word ander faktore wat die kamerametings kon beïnvloed het, ook ondersoek in die literatuur. Ingesluit is hoogtepunte van ander navorsing wat die tipes kameras gebruik vir hoogspannings elektriese doeleindes, plus kommentaar vir verdere navorsing. Vervolgens is eksperimente uitgevoer om die kamera te karakteriseer, insluitend die bepaling van die spesifieke kamera se spektrale oordragfunksie, met inagneming van die beperkings van kamera en verwante toerusting. Afgelei uit die spektrale oordragfunksie van die kamera en die ander eksperimente en literatuurstudie, is „n voorgestelde kalibrasiemetode aangebied, asook voorstelle vir die verbetering en die kamera en meer effektiewe gebruik daarvan. / Dissertation (MEng (Electronic Engineering))--University of Pretoria, 2015. / Electrical, Electronic and Computer Engineering / MEng (Electronic Engineering) / Unrestricted

In this present work, the dynamics of deformation mechanisms activated in binary magnesium-gadolinium alloys with respect to amount of Gd were investigated with in-situ experimental methods. Cast alloys are characterized by random texture. Compression test were done at room temperature with simultaneous record of acoustic emission response. The acoustic emission signal was subsequently analysed using advanced clustering method providing information about the dominant deformation mechanisms. High speed camera was used to study the dynamics of twinning, including estimation of the velocity of twin propagation with respect to Gd concentration. The deformation tests were repeated in a chamber of scanning electron microscope (in-situ SEM) with concurrent following the microstructure development using secondary electrons and electron back-scattered diffraction (EBSD) in different stages of the deformation. Main goal of this measurements was to identify active slip systems and the progress of twin volume fraction during deformation. Keywords: magnesium alloy, deformation tests, acoustic emission, high-speed camera, electron microscopy, twinning

The trending usage of IoT devices raises serious security concerns. IoT devices have complete access to users’ network environments. In the eyes of hackers, the value of IoT devices is exceptionally high. From minor disturbances to major crimes, all could happen in no time with compromised IoT devices. As the IoT devices collects sensitive data, properly protect users’ privacy is also a crucial aspect for IoT devices. Thus, IoT devices need to be secure enough against modern cyber-attacks. In this work, a smart camera DCS-8515LH from D-Link is under penetration tests. Threat modeling is first performed as an analysis of the IoT system following by a dozen cyber attacks targeting this smart camera. The penetration tests provide valuable information that can reveal the smart camera’s vulnerability and weakness, such as security misconfiguration, vulnerability to DoS attacks. The smart camera is discovered to be vulnerable to DoS attacks and exploits on the zero-configuration protocol. Several weaknesses which violate the users’ privacy exist in the mobile application and Android storage system. This work evaluated all the vulnerabilities and weaknesses discovered from a security aspect. This report exposes attacks that are effective on the smart camera and also serves as a fundamental basis for future penetration tests on this smart camera. / I detta arbete är en smart kamera DCS-8515LH från D-Link under penetrationstester. Hotmodellering utförs först som en analys av IoT-systemet följt av ett dussin cyberattacker riktade mot denna smarta kamera. Penetrationstesterna ger värdefull information som kan avslöja den smarta kamerans sårbarhet och svaghet, såsom säkerhetsfelkonfiguration, sårbarhet för Dos-attacker. Den smarta kameran har upptäckts vara sårbar för DoS-attacker och utnyttjande av nollkonfigurationsprotokollet. Flera svagheter som kränker användarnas integritet finns i mobilapplikationen och Android-lagringssystemet. Detta arbete utvärderade alla sårbarheter och svagheter som upptäckts ur en säkerhetsaspekt. Den här rapporten avslöjar attacker som är effektiva på den smarta kameran och fungerar också som en grundläggande bas för framtida penetrationstester på denna smarta kamera.