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Study can increase conviction rate of sex offenders

16 October 2020 | Story Leonie Bolleurs | Photo Supplied

Kyla_read more — Kyla Dooley, runner-up in this year’s Three-minute thesis competition, wants to pursue a career working alongside police enforcement, using her knowledge of forensics to solve criminal cases and convict perpetrators.

When rapes and sexual assaults are committed, DNA evidence can play a large role in convicting the offenders. DNA evidence collected from sexual crimes can, according to Kyla Dooley, often be tricky to analyse.

Kyla has just completed her master’s degree, specialising in Forensic Genetics, at the University of the Free State (UFS). She not only thrives in this field – graduating at the top of the Faculty of Natural and Agricultural Sciences in 2018 when she was awarded the Dean’s Medal – but her work also brought her the runner-up position in this year’s Three-minute thesis competition.

She talked about her research on the use of male-specific DNA in the analysis of DNA evidence collected after crimes of a sexual nature have been committed.

Explaining her research, Kyla elaborates: “In most cases, the victim is female, while the offender is male. Therefore, the evidence is often a mixture of male and female DNA and this can make it difficult to analyse the male DNA and match it to a male suspect.”

She believes the solution to this is to target male-specific DNA in analysis. “This eliminates all female DNA and simplifies the process,” says Kyla.

“Unfortunately, male-specific DNA technology is not currently used in South Africa, because the DNA regions tested to date haven’t shown much success in distinguishing between males in our population,” Kyla points out.

“The goal is now to use DNA evidence, to match it to a suspect, and have the confidence that it came from him and only him. Or else defence lawyers could argue that it came from someone else in the population,” she says.

Improving DNA evidence

Therefore, Kyla’s research focused on evaluating a new group of male-specific DNA regions, which are to be tested yet, to see if it would be a viable option for use in South Africa.

“I achieved this by collecting DNA samples from men on campus, processing them to obtain DNA profiles, and then determining how well these regions can distinguish between the men. The results of my research demonstrate the potential of these DNA regions to improve the use of DNA evidence when investigating sexual assaults in South Africa,” says Kyla.

She believes her study can play a role in increasing the conviction rate of sexual offenders, which could lead to a reduction in South Africa’s alarmingly high rape statistic.

“Everyone in South Africa is affected by this horrific crime in some way or another, so the benefits of this would be widespread,” she says.

Solving crimes

Although Kyla will one day pursue further studies, she is ready for the next stage in her life. “I am in the process of applying for jobs and getting ready to dive into the real world. I’ll definitely be pursuing a career working alongside police enforcement to solve criminal cases and convict perpetrators of such crimes. Working for the NYPD in the USA or Scotland Yard in the UK is the ultimate dream job,” she says.

“I chose my field not only because the forensics world absolutely fascinates me, but also because I want to make a difference. I want to play a role in getting justice for those affected by violent crimes. One simple process in a forensic scientist’s everyday routine could be a life changer for a victim of crime,” believes Kyla.

News Archive

Getting out of the dark

2015-06-10

ESKOM is making daily announcements on the status of the power grid.

Anton Calitz, Electrical Engineer at University Estates, is in continuous contact with Eskom and Centlec in an effort to stay abreast of load shedding.

According to Anton, Eskom has recently - the week of 20 April - been focusing on the evening peak, and has announced STAGE 1 load shedding from 17:00-22:00; thus, the Bloemfontein Campus should be able to continue business as usual during the day, except for Thursdays from 18:00 and, possibly, Fridays from 17:00.

Where can I get more information about load shedding stages?

Apart from Eskom’s webpage, staff can also visit GRID WATCH. Click on "Search", then under "Schedules". Look for "Mangaung Local Municipality", and select "GROUP 4". Save this location. “This can even be loaded onto your mobile device.”

“The time slots can be seen for a couple of days in advance, to allow us to plan around the possibility of load shedding in our daily lives,” said Anton.

Please note: ESKOM can change the STAGE level at any time. Therefore, keep an eye on GRID WATCH and News24.

View the typical seven-day planner for the Bloemfontein Campus (Group 4), which indicates the STAGE 2 and 3 possibilities. Take note that, on some days, the STAGE 2 and 3 time slots are the same.

More load shedding tips: Your IT needs

The UFS Data Centre (Computer Room) is fully serviced by a generator facility, and can function without external power supply for a few days.

The generator servicing the UFS data centre does NOT provide power to the outlying facilities. This implies that all digital equipment at gates, booms, and access points will be shut down until the power is restored to these facilities. “We are now, in collaboration with Nico Janse van Rensburg, in a process to install UPS facilities at these points, which will ensure two to three hours of power supply at these points, even during load shedding,” said Dr Vic Coetzee, Senior Director: ICT Services.

No Wi-Fi will be available, as it is dependent on the power supply to the buildings where it is installed.

All servers are contained in the data centre, and will be kept running by our generators.

How to manage load shedding and your IT needs:

1. Get into the habit of saving your work regularly on computer so that you don’t lose your work/files during load shedding.
2. Back up important data. Keep to a schedule of regular back-up. Make sure your computer back-ups are safe and recoverable.
3. Keep all electronic devices charged and ready to run on battery power. Keep your cellphone charged: some old-style Telkom landlines will still operate during power outages, but others won't.
4. Remember, when power supply is restored, it sometimes happens that a power surge is sent through the network, which will damage your computer. Fortunately, laptop computers will not suffer this fate as their power is provided through an external power pack. Often, this power pack will be damaged, but not the laptop itself.
5. It makes good sense to reboot your computer daily, not only in terms of power shedding, but also in terms of updating the drivers, software, etc.
6. Switch off all computers and other electrical equipment at the wall plug overnight and on weekends.
7. Should your IT equipment not switch on after a power outage, log a call with the ICT Services. You can also call them at x2000.

More information, guidelines and contact numbers

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