Patella sex determination by 3D statistical shape models and nonlinear classifiers

Sex determination is one of the essential steps in personal identification of an individual from skeletal remains. Most elements of the skeleton have been subjected to discriminant function analysis for sex estimation, but little work has been done in terms of the patella. This paper proposes a new sex determination method from the patella using a novel automated feature extraction technique. A dataset of 228 patellae (95 females and 133 males) was amassed from the William M. Bass Donated Skeletal Collection from the University of Tennessee and was subjected to noninvasive high resolution computed tomography (CT). After the CT data were segmented, a set of features was automatically extracted, normalized, and ranked. The segmentation process with surface smoothing minimizes the noise from enthesophytes and ultimately allows our methods to distinguish variations in patellar morphology. These features include geometric features, moments, principal axes, and principal components. A feature vector of dimension 45 for each subject was then constructed. A set of statistical and supervised neural network classification methods were used to classify the sex of the patellar feature vectors. Nonlinear classifiers such as neural networks have been used in previous research to analyze several medical diagnosis problems, including quantitative tissue characterization and automated chromosome classification. In this paper, different classification methods were compared. Classification success ranged from 83.77% average classification rate using labels from a Fuzzy C-Means (FCM) clustering step, to 90.3% for linear discriminant classification (LDC). We obtained results of 96.02% and 93.51% training and testing classification rates, respectively, using feed-forward backpropagation neural networks (NN). These promising results using newly developed features and the application of nonlinear classifiers encourage the usage of these methods in forensic anthropology for identifying the sex of an individual from incomplete skeletons retaining at least one patella.     

Internal Consistency and Factor Structure of the Revised Conflict Tactics Scales in a Sample of Deaf Female College Students

The Revised Conflict Tactics Scales (CTS2) is currently the most widely used measure for identifying cases of intimate partner violence within the hearing population. The CTS2 has been used successfully with individuals from various countries and cultural backgrounds. However, the CTS2 had not yet been used with Deaf individuals. The goal of the present study was to investigate the internal consistency reliability and the factor structure of the CTS2 within a sample of Deaf female college students. Psychometric analyses indicated that subscales measuring Victimization of Negotiation, Psychological Aggression, Physical Assault, and Injury proved both reliable and valid in the current sample. Three subscales did not evidence reliability and the factor structure was not valid for Perpetration items.     

Five-year accuracy of assessments of high risk for sexual recidivism of adolescents

This study looked at 12 juveniles in Wisconsin who were recommended by experts for commitment under Chapter 980, known as the Sexually Violent Person Commitments Act, but who ultimately were not committed. The purpose was to determine the accuracy of these assessments and risk for sexual reoffending for juvenile sexual offenders. The results found a rate of 42% sexual recidivism among these individuals, with a 5-year at-risk period. This figure is in contrast to the low rates of sexual recidivism reported in the general juvenile sexual research. This provides evidence that the capability to assess the risk in juvenile sexual re-offending may at times be higher than previously estimated. Implications of these unusual results are discussed.     

Self-deception and other-deception among admissions to a maximum security hospital and a medium secure unit

Abstract

Other-deception and self-deception are important variables to consider when conducting a forensic psychological evaluation. The main aim of the present study was to investigate the effects of setting on other-deception and self-deception scores. It was hypothesised that patients at a maximum security hospital (Broadmoor) would score lower on an other-deception questionnaire than similar patients at a medium secure unit (Denis Hill Unit). All the patients completed the other-deception (ODQ) and self-deception (SDQ) questionnaires of Sackeim and Gur (1979) on admission to the two security hospitals. The Broadmoor patients (N = 46) obtained significantly lower ODQ score than the Denis Hill Unit (N = 52) patients, after controlling for differences in ethnic background and diagnosis among the two populations. No significant difference in setting was found for the SDQ score. The ODQ and SDQ scores were significantly associated with the type of diagnosis and the ethnic background of the patient, with patients diagnosed as mentally ill scoring higher than those with a diagnosis of personality disorder, and ethnic minority patients scoring higher than Caucasian patients.     

Institutionalised Co-production: Unorthodox Public Service Delivery in Challenging Environments

In developing countries in particular, services are often delivered through unorthodox organisational arrangements that cannot simply be dismissed as relics of ‘traditional’ institutions, or as incomplete modern organisations. Some have emerged recently, and represent institutional adaptations to specific political and logistical circumstances. We need to expand the range of organisational categories that are considered worthy of study and develop a better understanding of the strengths and weaknesses of unorthodox arrangements. The concept of institutionalised co-production provides a useful point of entry. Institutionalised co-production is defined as: the provision of public services (broadly defined, to include regulation) through a regular long-term relationship between state agencies and organised groups of citizens, where both make substantial resource contributions. We explain some varieties of institutionalised co-production arrangements; explore why they appear to be relatively so widespread in poor countries; and relate the concept to broader ideas about public organisation.     

The Japanese worker

Abstract

Robert Cole points out in his introduction to Japanese Blue Collar that there are two dominant but conflicting views of the social relations of production in the Japanese economy, views which Cole conveniently sums up under the rubrics of “uniqueness” and “convergence.”     

Attention to Counter-Attitudinal Messages in a State Election Campaign

Research following the "selective exposure" model has focused on avoidance of political messages with which a person might disagree. But positive attention to such "counter-attitudinal" messages is worthy of study, in part because normative theories of democracy value exposure to information that might disturb citizens' political predispositions. Surveys of youth (N = 417) and parents (N = 430) examine attention to newspaper, television, and Web messages about candidates. While there is somewhat more attention to messages about and for a person's favored political candidate or party, forms of political involvement (knowledge, curiosity, and discussion) that predict this "attitude-consistent" attention also predict counter-attitudinal attention at least as strongly. Parents' education and students' exposure to civics lessons also predict both kinds of attention. These results suggest that attention to counterattitudinal political messages is worthy of further study as an important goal of political socialization and a criterion of citizen performance in democracy.     

Science governance and the politics of proper talk: governmental bioethics as a new technology of reflexive government

Abstract

The article examines the emergence of governmental bioethics in Great Britain, France and Germany, i.e. bodies, discourses and procedures meant to guide policy-making in terms of ethical considerations. It argues that governmental bioethics, marked by openness, transparency and participation, can be understood as a form of reflexive government in the realm of science governance. It grew out of the problematization of older forms of science governance based on ideas of effectiveness, scientific expertise and system stability, and operates through structuring and managing proper talk rather than intervening in processes of techno-scientific development. Yet, rather than challenging the commitment to techno-scientific ‘progress’, it stabilizes it through mechanisms of inclusion, involvement and mobilization: within the framework of proper ethical talk, participation can be employed to pursue rather than oppose system stability.