The estimation of age at time of death is often an important step in the identification of human remains. If this age can be accurately estimated, it will significantly narrow the field of possible identities that will have to be compared to the remains in order to establish a positive identification. Some of the more accurate methods of age estimation, in the juvenile and younger adult, have been based on the assessment of the degree of dental development as it relates to chronological age. The purpose of this current study was to test the applicability of one such system, the Demirjian system, to a Sydney sample population, and to develop and test age prediction models using a large sample of Sydney children (1624 girls, 1637 boys). The use of the Demirjian standards resulted in consistent overestimates of chronological age in children under the age of 14 years by as much as a mean of 0.97 years, and underestimates of chronological age in children over 14 years by as much as a mean of 2.18 years in 16 year-old females. Of the alternative predictive models derived from the Sydney sample, those that provided the most accurate age estimates are applicable for the age ranges 2-14 years, with a coefficient of determination value of R-square=0.94 and a 95% confidence interval of �1.8 years. The Sydney based standards provided significantly different and more accurate estimates of age for that sample when compared to the published standards of Demirjian.

Thesis (M.A. (Maatskaplike Werk)--North-West University, Potchefstroom Campus, 2008.

The use of biological agents as potential weapons has been a concern of security agencies for many years. Security agencies require alternative field protocols for handling forensic samples that could be contaminated with biological weapons. In this study, manual and automated DNA extractions were compared for the ability to remove biological agents and for their effectiveness and consistency when samples were contaminated with bacteria, spores or toxins. Purified DNA was evaluated for the absence of the agents, and for the effects of the process on the isolated human DNA. Results demonstrated that incubation of samples in a cell lysis solution eliminated bacteria and toxins, but an additional 0.22 µm filtration step was necessary to successfully remove bacterial spores. Blood and buccal swab samples exposed to some bacteria showed DNA loss and/or degradation. The automated extraction procedure would be preferable over the manual protocol to isolate human DNA contaminated with biological weapons.

We present a three-dimensional, forward model of blood droplets in ight. The proposed model is based on a set of ordinary di erential equations (ODEs) incorporating viscous drag and gravitational forces. We validate the model against laboratory experiments in which a mock crime scene is constructed. The experiments consist of a ballistics gel containing transfer blood or porcine blood shot by a riot ball from a paintball gun constituting a simulated bloodletting event. The experiments are captured using highspeed stereo camera pair from which three-dimensional trajectories can be extracted using tracking software. The long-term goal is to develop an accurate framework for forensic Bloodstain Pattern Analysis (BPA). / UOIT

We present a three-dimensional, forward model of blood droplets in ight. The proposed model is based on a set of ordinary di erential equations (ODEs) incorporating viscous drag and gravitational forces. We validate the model against laboratory experiments in which a mock crime scene is constructed. The experiments consist of a ballistics gel containing transfer blood or porcine blood shot by a riot ball from a paintball gun constituting a simulated bloodletting event. The experiments are captured using highspeed stereo camera pair from which three-dimensional trajectories can be extracted using tracking software. The long-term goal is to develop an accurate framework for forensic Bloodstain Pattern Analysis (BPA). / UOIT

The forensic focus has been a popular career choice and area of study for many of the health science disciplines. Forensic nursing education recently appeared in the curriculum at many colleges and universities. Now more than a decade from when some of the first forensic nursing courses were established, it was timely to explore rather than evaluate this unique specialty that has programs existing at every post-secondary educational level from certificate to doctoral programs. <p>The purpose of the study was to explore forensic nursing knowledge as a specialty area of study, and factors influencing educational development, as perceived by educators who were instrumental in establishing some of the earliest forensic nursing courses or programs. This predominantly qualitative study involved interviewing a purposive sample of nurse educators from Canada and the United States. Data collection involved an email survey to collect demographic information about the educators and course statistics about the programs they created, in addition to a qualitative, semi-structured telephone interview. <p>I utilized a thematic analysis to compare the data to literature relevant to the study, which included the historical evolution of forensic nursing along a sequential pattern of specialty development. I drew on my constructivist worldview to understand and interpret the responses. Although exploring forensic nursing provided a starting place for inquiry, the purpose of the research question was not only to describe what is but to consider the larger socio-technical, media, and economic forces influencing the educational development of this forensic specialty and then to link particular experiences into wider generalized and generalizing social relations. <p>One result of this study was a definition of forensic nursing constructed from the data and compared to earlier definitions in the literature. A further differentiation of forensic nursing determined knowledge that was different from nursing in general, and different from other forensic disciplines, a distinction that has significance for interprofessional education. In addition, it was determined that the unique knowledge content of forensic nursing may be the dual knowledge or dual roles of care and concepts specific to each subspecialty, for example: care and custody, care and collection of evidence, care and chain of custody, care and court room testimony, or care and crisis intervention. <p>In the early years of forensic nursing education development, it became evident that more than one positive factor was needed to create and maintain new specialty programs that were not then recognized as future mainstay programs. Therefore, from the constructivist worldview, multiple perspectives exist, and multiple and alternative factors are recognized to have influenced practice, education, and research in any discipline. From a constructivist interpretation to the findings of this study, all factors have relevance as all are needed for specialty programs to be developed and sustained.

The use of biological agents as potential weapons has been a concern of security agencies for many years. Security agencies require alternative field protocols for handling forensic samples that could be contaminated with biological weapons. In this study, manual and automated DNA extractions were compared for the ability to remove biological agents and for their effectiveness and consistency when samples were contaminated with bacteria, spores or toxins. Purified DNA was evaluated for the absence of the agents, and for the effects of the process on the isolated human DNA. Results demonstrated that incubation of samples in a cell lysis solution eliminated bacteria and toxins, but an additional 0.22 µm filtration step was necessary to successfully remove bacterial spores. Blood and buccal swab samples exposed to some bacteria showed DNA loss and/or degradation. The automated extraction procedure would be preferable over the manual protocol to isolate human DNA contaminated with biological weapons.

Reconstructing stature is at the core of providing information on unidentified human remains. This research shows that there are significant differences between modern populations and those used to create the most common stature estimation formulae. New formulae for the femur and fibula in males and females were created to provide accurate estimates for modern forensic cases. Additionally, a novel measurement of the femur is shown to be moderately correlated with stature and stature estimation formulae for this measurement are included.

The forensic focus has been a popular career choice and area of study for many of the health science disciplines. Forensic nursing education recently appeared in the curriculum at many colleges and universities. Now more than a decade from when some of the first forensic nursing courses were established, it was timely to explore rather than evaluate this unique specialty that has programs existing at every post-secondary educational level from certificate to doctoral programs. <p>The purpose of the study was to explore forensic nursing knowledge as a specialty area of study, and factors influencing educational development, as perceived by educators who were instrumental in establishing some of the earliest forensic nursing courses or programs. This predominantly qualitative study involved interviewing a purposive sample of nurse educators from Canada and the United States. Data collection involved an email survey to collect demographic information about the educators and course statistics about the programs they created, in addition to a qualitative, semi-structured telephone interview. <p>I utilized a thematic analysis to compare the data to literature relevant to the study, which included the historical evolution of forensic nursing along a sequential pattern of specialty development. I drew on my constructivist worldview to understand and interpret the responses. Although exploring forensic nursing provided a starting place for inquiry, the purpose of the research question was not only to describe what is but to consider the larger socio-technical, media, and economic forces influencing the educational development of this forensic specialty and then to link particular experiences into wider generalized and generalizing social relations. <p>One result of this study was a definition of forensic nursing constructed from the data and compared to earlier definitions in the literature. A further differentiation of forensic nursing determined knowledge that was different from nursing in general, and different from other forensic disciplines, a distinction that has significance for interprofessional education. In addition, it was determined that the unique knowledge content of forensic nursing may be the dual knowledge or dual roles of care and concepts specific to each subspecialty, for example: care and custody, care and collection of evidence, care and chain of custody, care and court room testimony, or care and crisis intervention. <p>In the early years of forensic nursing education development, it became evident that more than one positive factor was needed to create and maintain new specialty programs that were not then recognized as future mainstay programs. Therefore, from the constructivist worldview, multiple perspectives exist, and multiple and alternative factors are recognized to have influenced practice, education, and research in any discipline. From a constructivist interpretation to the findings of this study, all factors have relevance as all are needed for specialty programs to be developed and sustained.

Thesis (M.A.)--Texas State University-San Marcos, 2008. / Vita. Appendices: leaves 74-79. Includes bibliographical references (leaves 80-84). Also available on microfilm.