In dieser Arbeit wurde an einer Auswahl von Biomolekülen gezeigt, dass die Rasterkraftmikroskopie, welche ursprünglich in physikalischen Labors entwickelt und zunächst auch nur dort eingesetzt wurde, ein äußerst wichtiges Instrument innerhalb der biologischen und medizinischen Forschung darstellt. Es wurde gezeigt, welche Ergebnisse bei der Visualisierung von Biomolekülen erwartet werden können. Die nach einer eigens entwickelten Methode präparierten Actin-Proben konnten hochaufgelöst abgebildet werden. Es zeigten sich neben freiliegenden Einzelfilamenten auch Bündel, welche sich aus Einzelfilamenten zusammensetzen. Es ist ein Modell erstellt worden, welches die unterschiedlichen Breiten der Bündel erklärt. Mit Hilfe der Mikrokontakt-Druck-Technik (microcontact printing, µCP) ist es gelungen, Proteinstrukturen in der Größe weniger Nanometer großflächig auf verschiedene Substrate zu übertragen. Ebenso wurde ein proteophober SAM (self assembling monolayer) gestempelt, mit dem Proteinadsorptionen gezielt unterbunden werden konnten. Das Adsorptionsverhalten des Proteins F1-ATPase auf Gold ist in situ untersucht worden. Parallel dazu wurde die Adsorption des Proteins in einer Mikroquarzwaage (quarz crystal microbalance, QCM) untersucht. Beide Techniken zeigen unterschiedliche Adsorptions-kinetiken, die Kombination beider Methoden lässt jedoch eine Abschätzung der wahren Adsorptionskinetik zu. Ein neuer Messmodus (constant damping mode) ist ob seiner Fähigkeit, biologische Objekte abbilden zu können, geprüft worden. Vergleichsmessungen im Kontakt-, Nichtkontakt- und Dämpfungs-Modus an einer Proteinmultischicht zeigten, dass im Nichtkontakt-Modus die höchste Auflösung erzielt werden kann. Ferner sind Magnetkraftmikroskop-Experimente an dem als Eisenspeicher bekannten Protein Ferritin durchgeführt worden. An einer Submonolage Ferritin auf Glimmer lässt sich jedoch mit dieser Technik kein magnetisches Signal messen.

Der Beitrag plädiert für eine stärkere Berücksichtigung der Musik des 20. Jahrhunderts im Curriculum Hörerziehung. Dies geschieht nicht zuletzt in Hinblick auf die Befruchtung, welche hierdurch der ›klassische‹ Bereich erfährt. Aus der Arbeit mit Neuer Musik in der Gehörbildung werden drei Schwerpunkte vorgestellt: Lars Edlunds Modus Novus, die Arbeit mit Lückentexten und die speziell für Hörübungen mit nichttonaler Musik entwickelte Methode der Klangskizze. / This article makes the case for the stronger consideration of twentieth-century music in the aural-skills curricula. The argument addresses among other things the benefits this brings for “classical” repertoire. Three priorities are set based on the author’s experience with new music in aural-skills class: Lars Edlund’s Modus Novus, fill-in-the-blank activities, and a method of sketching sound developed particularly for the training of aural skills regarding non-tonal music.

The study provided a general orientation of crimes against children in South Africa to buttress the rationale of the research. A concise definition of crime, child, child abuse, sexual child abuse, physical child abuse, victims and perpetrators of sexual crimes against children. The research described the various forms of crimes against children in Guateng, the causes and explanations. An interpretation of the empirical study was provided in this research. It focussed on the perpetrators and victims of child sex crimes. The types of offenders, the motives and theoretical explanations of their behaviour. The modus operandi of the perpetrators found in the empirical study. The various characteristics of victims and perpetrators, the legal processes in the adjudication of child sexual offenders. The research examined some of the prevention strategies of child sexual crimes. Findings of the empirical research are provided. / Criminology / M.A. (Criminology)

This research is a exploratory and descriptive study based on juvenile's perceptions with regard to shop theft. Secondary data sources were consulted to supplement the empirical data collected by means of a comprehensive questionnaire. Five hundred learners from grades 10, 11 and 12 in Mabopane were selected for the completion of the questionnaires. Shop theft was further elucidated by the application of criminological theories to explain research findings by highlighting their relationship with shop theft. Main research findings established that there are significant statistical differences with regard to the learner gender, age and grade as far as their views on shop theft were concerned. Recommendations based on the findings include teaching Criminology at secondary schools, the development of an anti shop theft youth oriented crime prevention program, shop theft educational and awareness programmes, and shoplifter offender prevention programs. / Criminology / M.A. (Criminology)

The focus of this thesis is on Advance Fee Fraud (419 scams) on how it is executed and more importantly, on how it can be prevented. The research addresses the origins of AFF, the nature and extent of this crime and how the perpetrators are able to defraud their victims. The research described, examined and analysed the crimes, the perpetrators, the victims, adjudication and the prevention strategies of this fraud. Information was gathered through literature and empirical research. A qualitative research method was used to gather information from AFF offenders who were incarcerated in South African prisons in 2005. The results of the empirical research were carefully examined, analyzed and integrated into the various chapters of this thesis. A theoretical framework was also developed in an attempt to explain this complex phenomenon. The findings and recommendations in terms of the crimes, the criminals, the victims, adjudication and prevention were also made and some suggestions for further research thereof were also cited. / Criminology / D. Litt. et Phil. (Criminology)

The problem that the researcher encountered was that forensic investigators were found not to be formally using offender profiling as an investigative technique during investigations into fraud. This research was conducted to ascertain how offender profiling may be useful in expediting the forensic investigation process. The purpose of this research was to establish what offender profiling is, and what aspects or ingredients constitute such an offender profile. As offender profiles will serve as an aid in future forensic investigations into fraud, this study attempted to create an understanding and awareness of the value of offender profiling. In order for forensic investigators to use offender profiling during routine fraud investigations, it is extremely important that they understand the concept and its practical implementation. The overall purpose of this study is to provide practical recommendations for the implementation and use of offender profiling to forensic investigators both in the public and private sectors. / Criminal and Procedural Law / (M.Tech. (Forensic Investigation))

The South African National Defence Force (SANDF) was formed in 1994 after the integration of different “defence forces” into one large force. The sole existence of the SANDF is to protect the borders of the Republic of South Africa and its inhabitants. Resources such as vehicles make it easier for the SANDF to conduct mobile patrols and other operations to ensure that the organisation is always combat-ready. Motor vehicle theft is a crime that affects both individual citizens and organisations in South Africa; the SANDF is not immune to the crime. Many SANDF motor vehicles are stolen almost every day, and in most cases, these vehicles are taken without a trace. While there are security measures in place aimed at preventing theft of SANDF vehicles but these methods have proven futile. A literature review formed the basis of the study. Once the main theory and ideologies were identified, unstructured interviews were undertaken to gather information from various stakeholders. Observations were also conducted to determine behavioural patterns within military bases/units with regard to the parking of SANDF vehicles, even when the vehicles were parked in urban settings. Essentially, there is a problem regarding the security of SANDF vehicles and also the security within military bases / units. This study indicated that the SANDF loses vast amounts of money due to motor vehicle theft in Gauteng Province. The findings also revealed that the current vehicle security measures are outdated, ineffective and inadequate in preventing SANDF vehicles from being stolen. The recommendations are that the SANDF must invest more of its budget on vehicle security, rather than continuing with fruitless and monetary expenditure by conducting Board of Inquiries (BOI) or lengthy investigations in an attempt to relocate stolen vehicles or to determine how a particular vehicle was stolen. The SANDF requires a comprehensive system that should prevent the theft of its vehicles, as well as curbing the misuse of vehicles which ultimately renders SANDF vehicles as easy targets. / Police Practice / M. Tech. (Policing)

While establishing modus operandi information is an investigative technique that is used globally in the investigation of fraud, investigators of child support grant fraud in South Africa do not properly use this technique in their investigation. The study sought to examine the modus operandi used by civil servants in unduly accessing child support grand fraud. The study adopted a qualitative approach, with structured interviews and literature as data-collection methods. Two sample groups were used to gather data. The data was analysed using spiral method. The study found that modus operandi as a valuable investigation tool was not properly used and in other instances was never used in the investigations. On the basis of the findings, it is recommended that modus operandi captured on the police and corporate database systems be used as reference for comparing modus operandi of known grants fraudsters. Training and skills be provided to public and corporate investigators on the use of modus operandi information in the investigation of social grants. To ensure that good practice is developed, a modus operandi guideline document should be crafted by the South African Police Services' detective division at National level and corporate investigators respectively, with a view to improve conviction rate. / Criminology and Security Science / M. Tech. (Forensic Investigation)

This study was conducted in order to gain a better understanding of the phenomenon of drug trafficking with specific reference as to how South African drug mules are used in crossborder drug smuggling. Through media analysis, semi-structured interviews with drug trafficking experts and a literature study the researcher was able to make findings and recommendations as per the objectives of the study. The objectives of the study included examining how drug mules smuggle drugs across South African borders; what role drug mules play in drug trafficking syndicates and the motivations and reasons why South Africans are increasingly being recruited as drug mules. The researcher also attempted to determine the nature and extent of the drug demand supply in and to South Africa. By making the deduction that drug demand and drug supply are interrelated the researcher was ultimately able to conclude that drug mules will continue to engage in drug smuggling as long as there is a demand for drugs and readily available drug supply routes to and from a county. From the media reports analysed cocaine, methamphetamine and heroin were the drugs most smuggled by South African drug mules. It is also clear from the media reports that cocaine and methamphetamine are smuggled in the largest quantities by South African drug mules. The quantities of heroin found in the possession of South African drug mules were insignificantly small. This contradicts treatment centre data analysed that indicated heroin and methamphetamine users were almost double in numbers in comparison to cocaine users being treated at centres. Most South African drug mules are used to smuggle drugs to the cocaine markets in Europe and South Africa; the cannabis/marijuana (herb) market in Europe; the cannabis (resin) hashish market in Canada and the United States of America; the crystal methamphetamine market in the Far East (largely Japan and Korea) and the heroin market in South Africa. Using criminology theories as a basis, the researcher attempted to describe why people are vulnerable to being recruited as drug mules. Findings concluded that structural factors such as poverty and unemployment and substance abuse-related problems, particularly in marginalised and disadvantaged communities, all contribute to South Africans becoming drug mules. Recommendations by the researcher focused on identifying specific vulnerabilities associated with drug mule recruiting and its consideration in legislation relating to drug trafficking in South Africa. The recommendations focus on the specific prosecution of drug abusers, drug mules, drug distributors and drug mule recruiters. Lastly it is projected by the researcher that the drug demand in South Africa will continue to increase if the drug supply routes and drug smuggling operations by syndicates are not addressed more firmly / Criminology / M.A. (Criminology)

The problem that the researcher encountered was that forensic investigators were found not to be formally using offender profiling as an investigative technique during investigations into fraud. This research was conducted to ascertain how offender profiling may be useful in expediting the forensic investigation process. The purpose of this research was to establish what offender profiling is, and what aspects or ingredients constitute such an offender profile. As offender profiles will serve as an aid in future forensic investigations into fraud, this study attempted to create an understanding and awareness of the value of offender profiling. In order for forensic investigators to use offender profiling during routine fraud investigations, it is extremely important that they understand the concept and its practical implementation. The overall purpose of this study is to provide practical recommendations for the implementation and use of offender profiling to forensic investigators both in the public and private sectors. / Criminal and Procedural Law / (M.Tech. (Forensic Investigation))