Determining dental sex dimorphism in South Indians using discriminant function analysis

Dental forensics forms a vital branch of forensic science which deals with proper handling, examination and evaluation of dental evidences for identification of victims of crime, accidents or calamities. Therefore skull and teeth often provide the identification material. The aim of the study was to investigate the accuracy of odontometric methods in sex determination of permanent teeth and to compute new formula to differentiate male and female teeth using discriminant function analysis for South Indian population. A total of 100 subjects were selected for the study from a parent population of 4800 students by simple random sampling method. Alginate impressions of the upper dental arch were made and casts were poured immediately. A digital vernier calliper was used for the measurement of all upper anteriors. Twelve different tooth measurements were recorded and from those two indexes have been computed. Statistical analysis was performed using the SPSS version 17.0 software. All the predictor variables were subjected to stepwise discriminant function analysis which optimally separates the genders and a best discriminant function was generated. In all the observed mean dimensions, male values exceed the female values. Student's 't' test for the different predictor variables of all teeth selected between male and females were found significant (p < 0.05). Very high significance was found in mean MD of 11, 12 and 13 and |c| of 23. The variables exhibiting best discriminant powers were mesiodistal width of both upper central incisors, DB-ML of 13 and canine crown module of 13. Sexual dimorphism in the size of permanent teeth differs from one population to the other and hence the standards set for one population could not be applied for another population. Hence this technique would be a simple, quick, cost effective, reliable and accurate for sex determination.     

Will the regulation of governmental accounting go too far?

The establishment of the Governmental Accounting Standards Board (GASB) ushered in a new era in the regulation of governmental accounting. The promotion of uniform accounting standards for all state and local governments and the adoption of more effective regulations in certain areas, such as pension reporting, may lead to lower borrowing costs for governmental units. The GASB should, however, be concerned not only with the potential benefits associated with any new regulations but also with the related costs of implementing these regulations.     

Can crop insurance work? The case of India

This article assesses the performance of the Indian Comprehensive Crop Insurance Scheme from 1985 to 1993 in relation to a recent critical literature which argues that comprehensive agricultural insurance is subject to insuperable moral‐hazard obstacles. The Indian scheme has made heavy financial losses; on the benefit side, sample data from Andhra Pradesh suggest that some farmers have converted to yield‐raising techniques as a result of the presence of the insurance scheme, but that the scheme has not brought about any improvement in loan repayment performance, even though that was the scheme's explicit objective. We conclude that, to work properly, the scheme requires an increase in premiums and a reduction in the range of risks covered. A possible alternative design, in which individual farmers are insured directly against drought rather than against a shortfall in yields, is sketched out.