Global ETD Search

71	Laboratorní zdroj s rozhraním USBTMC / USBTMC bench power supply Sehnálek, Lubomír January 2016 (has links) This thesis was selected due to establishing of universal platform for USBTMC remote instrumentation and constructing a laboratory DC power supply for hobby use. This thesis is focused on design and realization of regulated linear DC power supply. At first thesis mentions kinds of DC power supplies and kinds of interfaces used for test and measurement instruments. Thesis continues by describing of blocks of a developed linear DC power supply with an USB interface following the USBTMC specification for remote control. Thesis ends by realization of the regulated linear DC power supply with USBTMC interface. It was achieved acceptable results. Communication between PC and Control module works well as same as communication between Control module and Power supply module. Maximum output ranges of voltage and current are 40V and 3A. Big interference on auxiliary supply rail decreases accuracy.
72	Examining the unique security features of a credit card with the aim of identifying possible fraudulent use Budhram, Trevor 09 1900 (has links) The use of credit cards has become a way of life in many parts of the world. Credit cards have also created many new opportunities for criminal activity. It is in this light that organizations such as VISA International have explored a variety of security alternatives by constantly reviewing security measures that may be applied to cards and devote considerable resources to the maintenance of security systems and programmes. These programmes mandated by the association, include uniform card standards, security standards for manufactures, embossing and encoding of cards, standards for mailing the cards and credit background investigations of applicants. These standards assist investigators in examining counterfeit cards and distinguish a counterfeit card from a genuine card. The constant reviewing of security features and methods by the association is to create a card that is technically difficult to alter or counterfeit. / Criminology / M.Tech. (Forensic Investigation) Investigation Evidence Locard principle Feature Prevention Counterfeit Identification Forensic investigation Credit card fraud Fraud 364.1630968 Fraud -- South Africa Fraud investigation -- South Africa Fraud -- South Africa -- Prevention Criminal investigation -- South Africa Credit card fraud -- South Africa Forensic sciences -- South Africa Consumer protection -- South Africa VISA International
73	Examining the unique security features of a credit card with the aim of identifying possible fraudulent use Budhram, Trevor 09 1900 (has links) The use of credit cards has become a way of life in many parts of the world. Credit cards have also created many new opportunities for criminal activity. It is in this light that organizations such as VISA International have explored a variety of security alternatives by constantly reviewing security measures that may be applied to cards and devote considerable resources to the maintenance of security systems and programmes. These programmes mandated by the association, include uniform card standards, security standards for manufactures, embossing and encoding of cards, standards for mailing the cards and credit background investigations of applicants. These standards assist investigators in examining counterfeit cards and distinguish a counterfeit card from a genuine card. The constant reviewing of security features and methods by the association is to create a card that is technically difficult to alter or counterfeit. / Criminology and Security Science / M.Tech. (Forensic Investigation) Investigation Evidence Locard principle Feature Prevention Counterfeit Identification Forensic investigation Credit card fraud Fraud 364.1630968 Fraud -- South Africa Fraud investigation -- South Africa Fraud -- South Africa -- Prevention Criminal investigation -- South Africa Credit card fraud -- South Africa Forensic sciences -- South Africa Consumer protection -- South Africa VISA International

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