Individuality of handwriting

Motivated by several rulings in United States courts concerning expert testimony in general, and handwriting testimony in particular, we undertook a study to objectively validate the hypothesis that handwriting is individual. Handwriting samples of 1,500 individuals, representative of the U.S. population with respect to gender, age, ethnic groups, etc., were obtained. Analyzing differences in handwriting was done by using computer algorithms for extracting features from scanned images of handwriting. Attributes characteristic of the handwriting were obtained, e.g., line separation, slant, character shapes, etc. These attributes, which are a subset of attributes used by forensic document examiners (FDEs), were used to quantitatively establish individuality by using machine learning approaches. Using global attributes of handwriting and very few characters in the writing, the ability to determine the writer with a high degree of confidence was established. The work is a step towards providing scientific support for admitting handwriting evidence in court. The mathematical approach and the resulting software also have the promise of aiding the FDE.     

Studies on glyoxalase 1 isoenzymes in semen stains: polymorphism in Himachal (India) population

One hundred and ten pairs of blood and semen samples and their stains were studied to type glyoxalase 1 (GLO 1) isoenzymes using agarose-starch medium. A good agreement was observed between the phenotypes expressed in blood and semen samples of the same donor. No GLO 1 activity however could be demonstrated in the vaginal swabs tested. The gene frequencies of GLO 1 polymorphs in Himachal population has been worked out and their stability studies carried out at -12 degrees C and at room temperature.     

Problems and justifications of the theory of Drstisrsti

Journal of Indian Philosophy -     

A study of sexual dimorphism in the femur among North Indians

Determination of sex of unknown skeleton remains is the most important step in the identification process. Racial and regional differences in the populations create and maintain specificity in their dimorphic characteristics. Moreover, considering continued secular changes in the population structure, constant revision of osteometric standards becomes mandatory. In an effort to establish osteometric standards for the femur of contemporary North Indian populations, 122 adult femora of known sex (M: 94; F: 28) were collected in the Department of Forensic Medicine, IMS, BHU, Varanasi. Eight standard parameters were measured and analyzed by discriminant function analysis using SPSS 16. The accuracy of sex prediction ranged from 70.5% to 83.6% with single variables. In stepwise analysis, epicondylar breadth, proximal breadth, and antero-posterior diameter of the lateral condyle were found to be the most discriminating variables providing an accuracy of 90.2%. The results clearly indicate the importance of the ends of femur in the determination of sex.     

Educational Aspirations of Male and Female Adolescents from Single-Parent and Two Biological Parent Families: A Comparison of Influential Factors

Youth from single-parent families report lower educational aspirations than those from two-parent families. This study explored the influence of background factors (gender, grade, parental education and SES), parental involvement with education, academic self-concept, and peer influences on educational aspirations. The participants were Canadian adolescents; 2751 from two parent and 681 from single-parent families. ANOVA results showed that adolescents from single-parent families scored significantly lower than adolescents from intact families on educational aspirations, and other predictor variables. Hierarchical regression analysis showed that the pattern of relationships between educational aspirations and other factors was very similar for adolescents from both types of families; namely academic self-concept significantly predicted educational aspirations. The family involvement and background factors predicted educational aspirations via academic self-concept. Having academically oriented peers was especially beneficial to adolescents from single-parent families. Implications for intervention programs are discussed. The research was supported by a Social Sciences and Humanities Research Council of Canada Grant. Rashmi Garg is an Associate professor in the Department of Psychology at Laurentian University. She received her PhD in 1983 from the University of Ottawa. Basically she is interested in applied research in the areas of educational and psychological measurement and testing. More specifically she is interested in the adolescent's education and career development. Stella Melanson received a master's degree in Human Development from Laurentian University in 2003. She is working as a research data analysis coordinator for Ontario Early Years Education and Social Planning Council. Her interest is in early childhood education. Elizabeth Levin is an Associate Professor and Chair of the Department of Psychology at Laurentian University. She received her PhD in 1986 from the University of Waterloo. Her major research interests focus on parenting styles and children's conceptions of parenting.