This blog is a collection of student comments on the concepts and questions that they are examining as they are introduced to forensic science.
Thursday, December 18, 2008
New forensic science will identify Brazil's "disappeared"
Dr Marco Guimar'£es from the University of S'£o Paulo (Faculty of Medicine Ribeir'£o Preto) has been working with Dr Martin Evison of the Academic Unit of Forensic Pathology at the University of Sheffield on methods of DNA recovery from forensic and ancient skeletons.
Dr Evison explained, "DNA recovery from the skeleton is a very difficult technique, especially when the material originates from a climate as extreme as Brazil's. Usually there's hardly any DNA left, and what there is is extremely difficult to recover. In these cases we've been using a DNA extraction technique that I originally developed in Sheffield to analyse ancient DNA from archaeological skeletons.
"We're also applying a 'third generation' DNA profiling method, which is theoretically able to distinguish a single individual in the entire population of the planet."
The scientists are now turning their attention to older forensic cases: those of the desaparecidos-or disappeared-from the periods of military government in Brazil from 1964 to 1985. As a result of their preliminary research, a skeleton recovered from a clandestine cemetery discovered on the outskirts of S'£o Paulo city in 1990 is believed to be that of an individual last seen alive in 1972.
When he returns to Brazil, Dr Guimar'£es will be sharing the techniques he has developed in Sheffield with forensic pathologist Dr Daniel Mu'oz, appointed by the State of S'£o Paulo to oversee identification of a further twelve hundred skeletonised bodies recovered from the same clandestine cemetery.
The collaboration is one of the first fruits of a new University of Sheffield initiative to promote wider collaborative research in human identification science and to support the investigation of human rights abuses. Experts in forensic science, chemistry and molecular biology at the University are working with colleagues from other universities to develop sophisticated new human identification techniques and technologies and make them available worldwide for use in cases similar to the Brazilian investigation.
Wednesday, December 17, 2008
Threats And Responses: Documents;Forensic experts uncovered forgery on Iraq, an Inspector says
Tuesday, December 16, 2008
Criminals Who Eat Processed Foods More Likely To Be Discovered, Through Fingerprint Sweat Corroding Metal
'Environmental Forensics' Could Cut The Cost Of Brownfield Development
"Vitreous Humor in the Eye Helps to Establish Time of Death
Sunday, December 14, 2008
What The Eyes Can Tell Us About The Time Of Death
To apply this technique, the researchers analyze potassium, urea and hypoxantine (a DNA metabolite) concentrations present in the vitreous humour of the eye of the human cadaver, and introduce these figures into a computer program. The software uses this information and is capable of establishing the time at which death occurred.
Thursday, December 11, 2008
Hair-raising forensic breakthrough hailed
Monday, December 8, 2008
New Forensic Course At North-Eastern University - Greg Hopwood -
"The degree provides students with an understanding of criminology, different types of forensic data and analysis techniques - just like the techniques used on CSI Miami."
The BSc (Hons) Forensic Computing degree begins in September 2005 and is believed to aid North-Eastern in attracting even more applicants in the coming years.
http://www.brightsurf.com/search/r-a/Forensic_pathology/1/Forensic_pathology_news.html
New Field Of Research Could Help Police In Crime Scene Forensics
Olivers Current Event
http://www.sciencedaily.com/releases/2008/09/080923121954.htm
Sunday, December 7, 2008
Vitreous Humor In The Eye Helps To Establish Time Of Death
DNA: Beyond Criminal Justice
There’s certainly a whole lot more DNA evidence now than in years past. The quest for the human genome and new science of genomics has explosively expanded DNA databases, which contain the raw code for the makings of all animals, plants, fungi, and bacteria. Through comparative DNA studies, says Carroll, scientists can peer back through the mists of time 600 or 700 million years to confirm that the process of natural selection drives diversity. DNA is a window into our ancient past.
Friday, December 5, 2008
Study Of Faulty Fingerprints Debunks Forensic Science 'Zero Error' Claim
Tuesday, December 2, 2008
Engineers Pioneer New Digital Forensics Technology
Traumatic events, PTSD, and psychiatric comorbidity in forensic patients – Assessed by Questionnaires and Diagnostic Interview
A New Breakthrough In Time Determination
Professor Rognum also said that compared to the 24 hours using temperature sensitive devices, the new method can be used for a period of up to four days. The FBI and Scotland Yard will be testing the TOD (Time Of Death) device, says the Norway Times.
Trent's Current Event
Monday, December 1, 2008
University of Leicester announces world first forensic technique
Traditionally 2 types of radiology are used in mass fatality and temporary mortuary investigations -that of fluoroscopy and plain x-ray.These techniques however are time consuming, yield limited information and are a health and safety hazard to those working in the environment due to the use of radiological equipment outside their normal working area. They are also not undertaken at the scene of the incident.As far as we know, for the first time in the world a new radiological system was used recently at a mass fatality investigation. A team of researchers led by Professor Guy Rutty of the University of Leicester Forensic Pathology Unit used a mobile MSCT scanner at the mortuary for the examination of the victims of a vehicle mass fatality incident.This instrument provided superior information in 2 dimensional plain film (AP and lateral) and 3 dimensional multi-slice examination with on-site soft tissue and bony reconstruction. The system proved faster then traditional temporary mortuary radiology yielding greater information related to identification, health and safety, autopsy planning and cause of death.Professor Rutty said: "The demonstration of the ability to utilise mobile MSCT technology under these circumstances may result in a complete rethinking of the type of radiology to be used in temporary mortuaries or mass fatalities scenes. The work presently being undertaken by my research team within the Forensic Pathology Unit at the University of Leicester in this area is hoped to develop new approaches to mass fatality radiological investigation which may be adopted throughout the world." University of Leicester
Cell Phones Distract Drivers
Criminals Who East Processed Foods More Likely TO Be Discovered, Through Fingerprint Sweat Corroding Metal.
Alex's current Event
Kelly's Current Event
The courts have tended to disagree.
Global positioning systems and factory-installed "black box" event data recorders effectively keep late-model vehicles under surveillance 24/7, providing evidence that can place a suspect at a crime scene, undermine an alibi, expose a cheating spouse, or prove liability in an accident.
Although privacy rights advocates warn that the devices augment an already intrusive network of security cameras, speed-monitoring radars, and instantly available databases, police and prosecutors hail the technologies as powerful investigative and forensic tools.
GPS tracking records introduced at trial put a Yolo County, Calif., man at the scene of arson fires, leading to his conviction in October for setting a dozen blazes in 2006.
A Commerce, Calif., man suspected of robbery was tracked by Los Angeles County Sheriff's Department detectives who planted a GPS unit in his car, mapping his movements and using the evidence to convince a jury he was guilty of assault with a deadly weapon.
In murder cases in Illinois, Washington, and California, including the trial of Scott Peterson for killing his wife and unborn son, the technology has been credited with helping establish guilt.
The evidence is sometimes the product of unwitting self-surveillance. GPS units keep positioning tracks that, if not erased, create a record of a person's movements.
Event data recorders are standard equipment in most new cars. They record speed, braking, signaling, and other driving behaviors, and can show investigators vital details about what led to a crash.
Wisconsin attorney David A. Schumann, who did some of the earliest legal analysis of GPS potential, points out its usefulness in tracking suspects, locating victims, and monitoring released convicts.
"There are cases where people have gotten hung by their own GPS, bought for purposes of evading the law only to have it used against them," Schumann said of drug traffickers and migrant smugglers caught with evidence they unknowingly gathered against themselves.
He also recalled the case of a Wisconsin man compelled to plead no contest to felony charges after using a GPS to stalk a former girlfriend.
Corporate owners of car and truck fleets, like rental and delivery companies, legally can track their vehicles and act on employee misconduct detected in the process.
But "Tracks of third parties, or of their property, without their knowledge are probably inadmissible and even illegal unless the tracks are conducted by law enforcement," Schumann said.
Also, in a slap at unauthorized consumer surveillance, state courts in Connecticut and California have struck down rental-car company practices of imposing surcharges based on GPS detection of excessive speeds or prohibited out-of-state travel. California banned such tracking four years ago, but rights advocates remain wary of the expanding surveillance.
"We are always concerned about individuals being tracked without their knowledge or informed consent," said Tori Praul, privacy researcher for the American Civil Liberties Union of Southern California
Monday, November 24, 2008
New fingerprint technique
Detective Tony Roten, from the Crimes Against Persons Section of the North Richland Hills Police in Texas, is the man who will be delivering the casings. Detective Roten is hoping that Dr. John Bond’s new forensic technique will help to solve the murder investigation. Dr. Bond developed this technique at the University of Leicester Forensic Research Centre. Dr. Bond was able to develop a technique that allows scientists to visualize fingerprints even after the print itself has been removed. Bond put together a study that observes the way fingerprints can corrode metal surfaces. This technique can enhance a fingerprint on a shell that has been already fired, to make it look like it did before it was fired.
The Marianne Wilkinson murder case revolves around the killing of a 68 year old woman, who was killed as she answered her door at around 7:30 at night on December 9 or 2007. Police have been investigating whether it was just an instance of mistaken indentity, or if the 68 year old woman was actually the intended target. However so far, the case is still unsolved.
Sunday, November 23, 2008
'America's Most Wanted' Murder Case To Be Investigated By Pioneering UK Forensic Scientist
Forgotten But Not Gone: How The Brain Re-learns
Fingerprints Prove to Do More Than Simply Identify
Furthermore, forensic scientists have developed a new method of fingerprint analysis that allows them to separate multiple fingerprints that overlap. Demian R. Ifa explains, "By looking for compounds we know to be present in a certain fingerprint, we can separate it from the others and obtain a crystal clear image of that fingerprint. The image could then be used with fingerprint recognition software to identify an individual." The process uses mass spectrometry, a technique that turns molecules into ions so that their masses can then be analyzed. They spray a stream of water in the presence of electrical fields, creating positively charged water droplets. These water droplets are then put onto the material being tested and the ion is transferred to the sample.
http://www.sciencedaily.com/releases/2008/08/080807144246.htm
Video Enhancement of Facial Images
Tuesday, November 18, 2008
Study Finds ADHD Affects Motor Skills of Boys More Than Girls
http://www.brightsurf.com/news/headlines/41340/Study_Finds_ADHD_Affects_Motor_Skills_of_Boys_More_Than_Girls.html
Sunday, November 16, 2008
WORLD BRIEFING | ASIA; Thailand: Powerful Gas Used In Protests, Study Finds
http://query.nytimes.co/gst/fullpage.html?res=9E06EFD8143AF937A25753C1A96E9C8B63&scp=4&sq=Forensics&st=nyt
Friday, November 14, 2008
Forensic breakthrough takes top prize
Claire was recently named the 2006 MacDiarmid Young Scientist of the Year, New Zealand's top award for emerging scientists. Her research has already been presented at international conferences in Hong Kong and Australia and she is due to present her findings to leading forensic scientists at the influential European Academy of Forensic Sciences conference in Helsinki next week. Miss French hopes her research will be developed into a commercial kit used routinely at crime scenes and forensic laboratories. Her win entitles her to a trip to the UK in September to attend the British Association's annual Science Festival, which draws 400 of the world's top scientists and science communicators. She also receives the gold MacDiarmid medal. She has a year left in her doctorate in anatomy, and hopes to continue in the field of forensic science
Thursday, November 13, 2008
Children's ability to describe past event develops over time
http://www.brightsurf.com/news/headlines/31707/Childrens_ability_to_describe_past_event_develops_over_time.html
Tuesday, November 11, 2008
Criminals Who Eat Processed Foods More Likely To Be Discovered, Through Fingerprint Sweat Corroding Metal
Babies placed in incubators decrease risk of depression as adults
New Field Of Research Could Help Police In Crime Scene Forensics
Scientists at the Translational Genomics Research Institute have developed a way to identify suspects at crime scenes when there is only a small amount of DNA, or even if the individual’s DNA is mixed with hundreds of other people’s DNA. They were able to identify an individuals DNA even if it was only .1 percent of the total amount of DNA using genotyping microarrays. They successfully identified the DNA even when it was among more than 200 individual samples. This could be very useful for investigators, which will help them better identify possible suspects; even if there have been many people at the crime scene. It may also be useful in the reprocessing of evidence from previous crime scenes. It would also be extremely useful since a lot of DNA evidence is made useless due to contamination, and this would enable the investigators to use the specific DNA and disregard other samples in the mix.
http://www.sciencedaily.com/releases/2008/08/080828220505.htmMonday, November 10, 2008
Forensic DNA SNP Analysis
In forensic genetics, DNA samples are analysed through the comparison of particular DNA sequences unique to each individual. In fact, although more than 99% of the genome is the same across the human population, variations in DNA sequence called polymorphisms can be used to both differentiate and correlate individuals.
Short Tandem Repeats (STRs) are the genetic markers most commonly used in this moment by forensic scientists. STRs consist of repetitive segments of DNA two to five nucleotides (DNA building blocks) length found throughout the genome with different individuals having different STRs combinations.
Recently however, another type of genetic marker called SPNs (single nucleotide polymorphisms), which consists in DNA sequence variations that result from alterations in a single nucleotide in the genome sequence, has been considered to replace STRs in forensic investigations. SNPs seem to have several advantages over STRs as not only they are a more stable genetic marker and so are less likely to be lost across generations which is crucial in paternity cases, but they are also cheaper, easier and faster to examine and need much smaller DNA samples.
But now Antonio Amorim and Luisa Pereira at IPATIMUP (Institute of Pathology and Molecular Immunology, Porto University, Portugal) and the Faculty of Sciences of the same university show that SNPs analysis can also have some problems. In fact, the two scientists used statistic simulations to compare STRs and SNPs effectiveness in kinship studies and reached the unexpected conclusion that the possibility of inconclusive results is much higher when using SNPs. Amorim and Pereira's work question the validity of SNP polymorphisms sole use in routine paternity investigations and raise the need for a proper assessment of this technique before any decisions are make.
Saturday, November 8, 2008
SANS Announces New Resources for Computer Forensics and e-Discovery Professionals: http://forensics.sans.org
The SANS (SysAdmin, Audit, Network, Security) University developed a new website recently that was targeted at forensic training. The website uses verious training methods to instruct future and current forensic compputer analysists prospects in the methods of analysis and and which crimes to look outfor. The site provides a community-focused environment, and "offering a one-stop resource to learn, discuss, and share current developments in the field of digital forensics." Some of the various crimes detailed on the site are: "fraud, intrusion, insider threats, phishing, and other cyber-crimes." The site is equipped with a team of GIAC Certified Forensic Analysists (GCFA), who provide insights to those who participate in learning from the site. The site also provides a long "list of blogs, podcasts, and other forensics focused resources." The SANS Univeristy's many innovations and resources provide it with the the most trusted seal of foresic computer analysists.
Thursday, November 6, 2008
Criminals who eat processed foods more likely to be discovered, through fingerprint sweat corroding metal
Researchers find new forensic tools to ID missing soldiers' remains
New detergent washes away stains of murder: study
Wednesday, November 5, 2008
Forensics Breakthrough could stop major art fraud-
Forensics: Fingerprints can be recovered from fired bullet casings-
Science has developed a technique for retrieving fingerprints from bullet casings and bomb fragments after they have been fired and detonated. The new method, which relies on subtle corrosion of metal surfaces, is already being applied for the first time anywhere in the world by two British police forces. The patterns of corrosion remained after the surface has been cleaned, heated to 600C or even painted over. This means that traces of fingerprints stay on the metal long after the residue from a persons finger has gone.
Forensic Breakthrough on text messages-
Tuesday, November 4, 2008
Women Have More Diverse Hand Bacteria Than Men
Knight recently received a $1.1 million NIH grant to develop new computational tools to better understand the composition and dynamics of microbial communities. He has been developing novel methods to tag DNA samples with error-correcting "barcodes" to obtain more accurate sequencing data.
I personally found it very interesting to find out form this article that woman have more hand bacteria than man. This is all due to the advance of technological devices we have encountered, especially in the scientific field.
Thursday, October 30, 2008
DART - Direct Analysis in Real Time
"Fingerprint Breakthrough Could Solve Cold Cases"
http://crime.about.com/od/forensics/a/metal_prints.htm
As advances continue to progress in the field of forensic science, just recently British forensic scientists have developed a new fingerprinting technique in which prints can be identified from metal objects even if they have been washed away with water or soap. With this new technique, scientists are able to obtain fingerprints on metal objects ranging from small shell casings to large machine guns. The process consists of applying an electric charge to a metal, such as a gun, that has been coated in a fine conducting powder. As the charge is applied, the small corrosion left on the metal by fingerprints attracts the powder that ultimately reveals the appearance of the fingerprint. This procedure is made easier from the heat produced by the gun as the shot was fired. This method is particularly good for identifying suspects through examining metallic evidence for even if the criminal washes the gun with soap and water, the slight corrosion made by the fingerprint remain and can now be exposed. As the scientific support manager for the Northamptonshire Police, Dr. Bond suggests that this new technology will lead to a serious of numerous past case re-openings to further evaluate the physical evidence of metallic objects that may contain corrosion points and reveal the truth in the court room.
Cyber Forensics - Digital Fingerprints to Protect Multimedia
Monday, October 27, 2008
Intern cracks cold murder case ... after 36 years
Austin Galloway
After 36 years of despair, the family of Gerald “Jerry” Jackson finally learned who had brutally murdered the Vietnam vet in his apartment in California. Thanks to an enterprising intern at the San Diego Police Department, the closure they have waited for so long appears to be finally at hand.
The suspected killer, 60-year-old Gerald Metcalf, was arrested last week in Texas and is awaiting extradition to San Diego to stand trial. The person responsible for cracking the case is Gabrielle Wimer, a 24-year-old criminal-justice major who looks forward to a career in crime scene investigation.
Jerry Jackson was a Vietnam vet and postal worker who worked part-time at a bar. He was last seen at work at the bar on Dec. 28, 1971. When he didn’t show for his postal job, co-workers called police, who found his body in his apartment on Jan. 2, 1972. He had been stabbed 50 times and his apartment had been ransacked. Fingerprints were recovered, but there was no database to submit the prints at that time. Wimer simply resubmitted the prints to the now extensive database and they matched Metcalf.
There are many other cases that could be solved by reopening preserved evidence and using technology now that was not previously available.
Alcohol's Affect on Brain Volume
http://www.sciencedaily.com/releases/2008/10/081013171421.htm
A new study has been released showing that the more alcohol an individual drinks, the smaller his or her total brain volume. Brain volume already decreased by about 1.9% every 10 years, but the study suggests high alcohol consumption only compounds this effect. Lower brain volumes are also associated with higher risk of dementia and problems with learning and thinking. Scientists theorized that since moderate alcohol consumption has an effect on the risk of cardiovascular disease it may also effect the brain volume. The study which was conducted on 1839 adults began in 1971. Although men in the study were more likely to drink more alcohol, women had a higher association between alcohol consumption and brain volume decrease.This could be due to biological factors, including women's smaller size and greater susceptibility to alcohol's effects. "The public health effect of this study gives a clear message about the possible dangers of drinking alcohol," the authors write. The ultimate conclusion was that although moderate alchohol consumption may help the heart it has no known protective effects over the brain.
Tiny Tags Could Help Solve and Deter Gun Crime
Sunday, October 26, 2008
Federal Funding to Ease DNA analysis Backlog
Local and state law agencies have been making moves to reduce nationwide backlog on cases waiting for DNA analysis. The federal government has made efforts by them giving $500 million grants to laboratories throughout the country. Many of these cases are from rape and assault cases. These cases that are on backlog for testing are letting possibly thousands of criminal offenders unpunished on the loose and maybe committing new crimes. Each DNA sample costs about $1,500 to be analyzed and that is for the 700 cases that are backlogged. This also brings up many cases in which the attackers or rapists continue to commit the crimes that they are being tested for. As the cases are backlogged in the programs, the offender went on to rape two other women one being a seventeen-year-old girl and sexually assaulted them both. Progress is trying to be made on the backlogging of DNA analysis cases but not much has really happened as of now.
Tuesday, October 21, 2008
Genetic Testing Anywhere: Micro-sizes Hand-held 'Lab-on-a-chip' Devices Under Development
http://www.sciencedaily.com/releases/2008/09/080919183815.htm
Last month, Mr. Landers, a professor of chemistry and mechanical engineering and associate professor of pathology at the University of Virginia published his research on a new lab on a chip technology. He is trying to create a hand-held device that can allow physicians, crime scene investigators, pharmacists, even the general public, to quickly and inexpensively conduct DNA tests from almost anywhere, without need for a complex and expensive central laboratory. "We are simplifying and miniaturizing the analytical processes so we can do this work in the field, away from traditional laboratories, with very fast analysis times, and at a greatly reduced cost," he said. The hand-held device would hold many analytical tools found in a lab, but it would be portable. For example, the unit would be able to test a pin-prick-size droplet of blood, and within an hour provide a DNA analysis. This would be useful to crime scene investigators who could collect and analyze even a tiny sample of blood or semen on the scene, enter the finding into a genetic database, and possibly identify the perpetrator very shortly after a crime has occurred.
The Molly Justice Murder
Local Vietnam flier's remains found, identified
processed food makes a fingerprint come up more clearly
Dr. John Bond is a scientific support officer at Northamptonshire Police, and a researcher at the University of Leicester. Dr. Bond recently discovered that processed food makes a fingerprint come up more clearly. Dr. Bond described in a conference at the University of Leicester that when a criminal has eaten food that has a high salt content, their fingerprints make more of an impression. He said these clearer fingerprints will help to tell more about the person who left the mark. Bond has discovered this new method which allows scientists to ‘visualise fingerprints’.
The idea is that the fingerprints on a metal bullet shell appear more clearly when a sweaty finger touches it. Even after the bullet has been fired, this technique will make it easier for the scientists to analyze the prints. Dr Bond said, “On the basis that processed foods tend to be high in salt as a preservative, the body needs to excrete excess salt which comes out as sweat through the pores in our fingers. Dr. Bond and a group of scientists are now working on creating a scope that can detect the sweat itself, which could allow them to identify the type of person who left the sweat. This new process of studying the fingerprints on bullet shells isn't the best way to determine who committed the crime, but it is something for the police to use when they've got nothing else. The fingerprint would allow scientists to determine more about the type of person who committed the crime, but not actually be able to identify the single person.
Forensics anthropologists have created life size images of George Washington
Forensics anthropologists have created life size images of George Washington resembling what he would really look like in person. They are doing this by processing images of Washington with mathbased computer software and 3D laser scans. Forensics pathologist Jeffrey H. Schwartz at the University of Pittsburgh has stressed the importance to do as much reconstruction of the older Washington as possible so that he can apply general rules of aging and then reversing the sequence to show a younger George Washington. Pathologists say that Washington was a lot stronger than he is depicted as being, the Executive director of the Historic Mount Vernon in Mount Vernon, Virginia James C. Rees says that if they can show Washington as the strong adventurous man he was, kids would be more willing to learn about our first president.
Monday, October 20, 2008
Editor's Letter: Forensic Tools
DNA isn't the only tool that investigators use to help solve crimes. These high quality tools consist of scanning and imaging, and collection tools to gather evidence. High Tech vehicles come to certain crime scenes which carry certain evidence analysis's so that they can start being evaluated at the crime scene. Dick Warrington says that the basic and necessary crime scene evidence collection tools are tape, bags, powder, brushes, gloves, swabs, markers, scales, and lighting.
All of these things won't help assist solving a crime unless the evidence is collected and handled by highly trained professionals. If not there could be serious contamination and damaged to the evidence which would lead to investigators in a different track then they want. Solving a crime is simple as long as their is good evidence along with highly trained investigators and the right evidence collection tools.
http://www.forensicmag.com/articles.asp?pid=236
Tuesday, October 14, 2008
Technology to track criminals will expand
A New Breakthrough In Time Determination
Professor Rognum also said that compared to the 24 hours using temperature sensitive devices, the new method can be used for a period of up to four days. The FBI and Scotland Yard will be testing the TOD (Time Of Death) device, says the Norway Times.
Monday, October 13, 2008
Use of Trained Dogs to Locate Human Remains
Link : http://www.forensicmag.com/articles.asp?pid=231
A common problem in death investigation is the finding and identification of objects and places associated with either the commission of an incident or the actual location of a decedent's body. Weapons are often disposed of in natural areas: objects, clothing, and vehicles may be cleaned in an attempt to remove evidence of blood and tissue; bodies are buried in remote areas or with associated efforts to conceal burial. Once an object or place is located, standard criminalistic, archeological, and forensic investigative methods can be used to make the victim, perpetrator, or object linking.
Various methods are utilized to locate an object of interest such as searching an area with trained dogs. In this article it is apparent that the use of specially trained canines for the location of human remains and objects of forensic interest. Forensics uses a canine that has been specifically trained to indicate a scent source as being from decomposed human tissue. Latimer believes canine forensics will continue to build on its reputation within the scientific and legal communities.
“But that will only happen if we work on improving the profession and policing ourselves rather than waiting for legal decisions in big cases to dictate the way we do things,” he said. “If we are proactive enough, many of the legal challenges can be avoided.”
Tuesday, October 7, 2008
New ink sampling technique taking a bite of out time
Current Event – Forensics
New ink sampling technique taking a bite of out time
July 18, 2007
Ames, Iowa –
In this article researchers at the Midwest Forensics Resource Center at Iowa State University are building a library of ink profiles to help forensic scientists identify inks on fraudulent documents and other evidence. In this process scientists will pair mass spectrometry with new sampling technique called “Direct Analysis with real time (DART). This process will reveal the chemical make up of ink faster. This will show a greater detail than we have seen before.
The process goes like this DART mass spectrometry analyzes ink by creating a stream of warm gas containing excited-state helium atoms or nitrogen molecules in the DART source. The gas stream is pointed at an ink sample, and the gas and excited-state species evaporate and ionize the molecules from the sample. A mass spectrometer measures the production of ions to create mass spectrum data from each ink sample tested. Unlike other ink analysis liquid chromatography only requires a small sample from the document and does not alter them physically or visually. The great thing about the DART system is that it can take a sample of the ink straight off the paper. You don’t have to extract the sample first. Before this process we had to cut a little bit of sample out and dissolve it in solvent for analysis. In essence we don’t destroy the evidence. The great thing about this if we don’t alter or destroy the evidence, it will hold up in court in order to indict the criminal every time. Also, with this process we can analysis more cases in a shorter period of time. Prior to DART scientists could not even do the ink sample tests because of the caseloads were so large.
Jones and John McClelland, Ames Laboratory senior physicist and DART project leader plan a three phase project. The first phase is to create and determine the best way to make inks and build the library. The second phase was ink mass spectra to produce. The third phase is make a project to focus on creating a computer software, always used to store and access the mass spectra library.
Monday, October 6, 2008
Text Crimes, Sex Crimes, and Murder
http://www.sciencedaily.com/releases/2008/09/080908073841.htm
ScienceDaily (Sep. 8, 2008) — Text and instant messaging may soon cease to be an anonymous method of communication as advances in forensic linguistic research make it possible to identify the sender and also predict the gender and age of the author with some degree of success.
At the BA Festival of Science in Liverpool on September 8, Dr Tim Grant, the Deputy Director of the Centre for Forensic Linguistics at Aston University, will describe how language analysis is increasingly playing a key part during police investigations and court cases to help identify the author of incriminating material, whether it be a threatening note, documents planning a terrorist attack or a sexually explicit chat room conversation involving an adult and a child.
He believes that, despite public concerns about the growth of a surveillance society, the ability to identify authorship of electronic communications is beneficial.
Linguistic evidence demonstrating who sent a particular text message has been significant in a growing number of cases where criminals have attempted to use them as alibis. These include difficult murder cases where victims’ bodies were never found, such as the recent prosecution of David Hodgson, who was convicted in February of the murder of his ex-lover Jenny Nicholl. Her body has never been found.
Dr Grant explains: ‘Jenny Nicholl disappeared on 30th June 2005. A linguistic analysis showed that text messages sent from her phone were unlikely to have been written by her but, rather, were more likely to have been written by her ex-lover, David Hodgson. A number of stylistic points identified within texts known to have been written by Jenny Nicholl were not present in the suspect messages. Instead, these were stylistically close to the undisputed messages of David Hodgson.
Hodgson was convicted partly because, in text messages he sent on her phone after she disappeared, he spelled "myself" as "meself". In her own text messages, Nicholl had spelled the word "myself".
‘The kind of features we were interested in were the shortening of “im” in the texts from Nicholl contrasting with “I am” in the suspect messages and the lack of space after the digit substitution in items such as “go2shop” contrasting with “ave 2 go”’.
Dr Grant has put together a database of more than 7000 texts as part of his research into text messaging style and variation between individuals and groups of individuals. The public can contribute to his ongoing research by submitting text samples to http://www.forensiclinguistics.net/texting. His study seeks to establish base rate information for certain features in texting language, and will also highlight how groups of people who text one another frequently grow more similar in their texting style.
Based on techniques that were first used to measure similarity between marine ecosystems, and then applied to the analysis of sexual crime, Dr Grant has now developed a method to quantify people’s style of text writing. His technique, which assigns a numeric measure of stylistic difference between any two texts, encourages the move from expert opinion based evidence to more methodologically rigorous and empirically tested techniques.
‘Forensic linguistics is a relatively new forensic science but the Council for the Registration of Forensic Practitioners opens a linguistic subregister this month and this will give easy access to reputable practitioners and help cement its position as a key forensic science,’ said Dr Grant.
‘In addition to this formal recognition we are seeing an expansion in casework, particularly in the area of electronic communication – SMS, IRC (internet relay chat) and email. In these kinds of communication it is relatively easy to be, or at least feel, anonymous – new technologies have created an anti-social phenomenon of mass anonymity, and the ability to identify the writer can only be beneficial for society.’
Dr Grant will be presenting this material in his talk at the BA Festival of Science, ‘The BA Joseph Lister Award Lecture – Txt crimes, sex crimes and murder: the science of forensic linguistics’.
Sunday, October 5, 2008
Sweat Profiling
With this new discovery Dr. Bond later talked of his idea of creating a new type of profile, the "Sweat Profile". It states that he and his fellow colleges are still in the process of discussing it, but this new profile could lead to even more evidence that could potentially lead to identifying a criminal.
His research showed that his technique can reveal the marks of a finger print long after the actual print was whiped away. For example, Dr. Bond said his teqnique would allow for the fingerprints left on a small calibre metal cartrige case to be seen even after the gun was fired. So if a bullet was found at the scene of the crime, a fingerprint could be found on the metal and matched to the perp.
Dr. Bond said: “On the basis that processed foods tend to be high in salt as a preservative, the body needs to excrete excess salt which comes out as sweat through the pores in our fingers. So the sweaty fingerprint impression you leave when you touch a surface will be high in salt if you eat a lot of processed foods -the higher the salt, the better the corrosion of the metal."
Its amazing how this discovery can aid tremendously in the field of foresic science. One amazing aspect of Dr. Bond's discovery is that in cases that deal with terrorist, where the evidence is normally obliterated, if a piece of metal or shard of glass is found with sweat residue an easier assessment of the scene will be made. Dr. Bond near the end of the article gives his last remarks of how he described his study of sweat is a process of intelligent fingerprinting and how using this new form of "fingerprint" to tell us more about the individual, rather than simple identification.
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Monday, September 29, 2008
Olivers Deaths Acre
James' Death Acres Essay
Dr. Blass has been a pioneer in this field of study, and his lab is found in Tennessee. His creative mind has been so important to the present scientists, who are employed by the legal and medical professions.
Bodies left in many different environments, exposed to the weather, animals, disease, and other factors have helped tell the story through his examination how the victim died, along with a lot of other details that have helped the police solve murder cases. Some of these cases are from many years ago, but through his research they now have the information that may have not been possible back then.
I found this book interesting, but it was hard to read about the details at times, it was very difficult to think that these were real people who had died, and left out to decompose.
Tuesday, September 23, 2008
Turkish Tribal Capital Unearthed and Studied
Dmitry Vasilyev, a professor at Astrakhan State University, said his nine-year excavation near the Caspian Sea has finally unearthed the foundations of a triangular fortress of flamed brick, along with modest yurt-shaped dwellings, and he believes these are part of what was once Itil, the Khazar capital.
By law Khazars could use flamed bricks only in the capital, Vasilyev said. The general location of the city on the Silk Road was confirmed in medieval chronicles by Arab, Jewish and European authors.
"The discovery of the capital of Eastern Europe's first feudal state is of great significance," he told The Associated Press. "We should view it as part of Russian history."
Kevin Brook, the American author of "The Jews of Khazaria," e-mailed Wednesday that he has followed the Itil dig over the years, and even though it has yielded no Jewish artifacts, "Now I'm as confident as the archaeological team is that they've truly found the long-lost city,
The Khazars were a Turkic tribe that roamed the steppes from Northern China to the Black Sea. Between the 7th and 10th centuries they conquered huge swaths of what is now southern Russia and Ukraine, the Caucasus Mountains and Central Asia as far as the Aral Sea.
Itil, about 800 miles south of Moscow, had a population of up to 60,000 and occupied 0.8 square miles of marshy plains southwest of the Russian Caspian Sea port of Astrakhan, Vasilyev said.
It lay at a major junction of the Silk Road, the trade route between Europe and China, which "helped Khazars amass giant profits," he said.
The Khazar empire was once a regional superpower, and Vasilyev said his team has found "luxurious collections" of well-preserved ceramics that help identify cultural ties of the Khazar state with Europe, the Byzantine Empire and even Northern Africa. They also found armor, wooden kitchenware, glass lamps and cups, jewelry and vessels for transporting precious balms dating back to the eighth and ninth centuries, he said.
But a scholar in Israel, while calling the excavations interesting, said the challenge was to find Khazar inscriptions.
"If they found a few buildings, or remains of buildings, that's interesting but does not make a big difference," said Dr. Simon Kraiz, an expert on Eastern European Jewry at Haifa University. "If they found Khazar writings, that would be very important."
Vasilyev says no Jewish artifacts have been found at the site, and in general, most of what is known about the Khazars comes from chroniclers from other, sometimes competing cultures and empires.
"We know a lot about them, and yet we know almost nothing: Jews wrote about them, and so did Russians, Georgians, and Armenians, to name a few," said Kraiz. "But from the Khazars themselves we have nearly nothing."
The Khazars' ruling dynasty and nobility converted to Judaism sometime in the 8th or 9th centuries. Vasilyev said the limited number of Jewish religious artifacts such as mezuzas and Stars of David found at other Khazar sites prove that ordinary Khazars preferred traditional beliefs such as shamanism, or newly introduced religions including Islam.
Yevgeny Satanovsky, director of the Middle Eastern Institute in Moscow, said he believes the Khazar elite chose Judaism out of political expediency — to remain independent of neighboring Muslim and Christian states. "They embraced Judaism because they wanted to remain neutral, like Switzerland these days," he said.
In particular, he said, the Khazars opposed the Arab advance into the Caucasus Mountains and were instrumental in containing a Muslim push toward eastern Europe. He compared their role in eastern Europe to that of the French knights who defeated Arab forces at the Battle of Tours in France in 732.
The Khazars succeeded in holding off the Arabs, but a young, expanding Russian state vanquished the Khazar empire in the late 10th century. Medieval Russian epic poems mention Russian warriors fighting the "Jewish Giant."
"In many ways, Russia is a successor of the Khazar state," Vasilyev said.
He said his dig revealed traces of a large fire that was probably caused by the Russian conquest. He said Itil was rebuilt following the fall of the Khazar empire, when ethnic Khazars were slowly assimilated by Turkic-speaking tribes, Tatars and Mongols, who inhabited the city until it was flooded by the rising Caspian Sea around the 14th century.
The study of the Khazar empire was discouraged in the Soviet Union. The dictator Josef Stalin, in particular, detested the idea that a Jewish empire had come before Russia's own. He ordered references to Khazar history removed from textbooks because they "disproved his theory of Russian statehood," Satanovsky said.
Only now are Russian scholars free to explore Khazar culture. The Itil excavations have been sponsored by the Russian-Jewish Congress, a nonprofit organization that supports cultural projects in Russia.
"Khazar studies are just beginning," Satanovsky said.
Monday, September 22, 2008
“Scientists turn on biggest ‘Big Bang Machine’”
Source: Alan Boyle/MSNBC Colorado Springs
GENEVA, SWITZERLAND (11 September 2008) – After 14 years of preparation, a new scientific wonder of the world officially opened its doors for business Wednesday with the official opening of Europe’s Large Hadron Collider.
The particle, which cost $10 billion, is the biggest, most expensive science machine on this planet. It is designed to probe mysteries ranging from dark matter and missing antimatter to the existence of extra and unseen dimensions in outer space.
Beams of protons were sent all the way around the collider’s 17-mile underground ring of supercooled pipes for the first time. While this was taking place, Robert Aymar, Europe’s CERN organization’s director general, said to everyone in the control room, “This is a great day for CERN.”
Forensic Study in Kosovo Villages
The Security Council for the U.N. set an emergency session, and the ambassadors of NATO met in Brussels, and as the U.S. called for forensic experts to investigate the massacres of the Kosovo villagers. If the West decided to use force, NATO weaponry and soldiers were gathering to prepare. Still, there is no sign that the Western nations had resolved to strike against Serbian troops. These Serbian troops were carrying out President Slobodan Milosevic’s crackdown against ethnic Albanians in Kosovo.
“If Milosevic doesn’t reverse course, he has begun to get the message that military action is a live and real prospect,” James Foley said. James Foley, who is a spokesman for the State Department also said that “we believe that NATO is for all practical purposes prepared to act, and that NATO is in the last phases of its planning process. He also claims that we’ve got to see the real evidence on the ground, and that he has ended the repression. He’s withdrawn the forces. Michael D. McCurry, the White House spokesman, referred to reports of witnesses about massacres against civilians, said it was “very important to us that the international forensic experts be allowed to inquire further on these events.”
In conclusion, I do think that it is very important to take any statement seriously from the Security Council that supported NATO’s determination to act, because NATO does have the authority to undertake military action on its own initiative.