Virtual anthropology: a preliminary test of macroscopic observation versus 3D surface scans and computed tomography (CT) scans

Virtual anthropology (VA) is based on applying anthropological methods currently used to analyse bones to 3D models of human remains. While great advances have been made in this endeavour in the past decade, several interrogations concerning how reliable these models are and what their proper use should be remain unanswered. In this research, a fundamental assumption of VA has been investigated: if the way we perceive and apply an anthropological method is truly similar when looking at bones macroscopically and through various 3D media. In order to answer, 10 skulls of known age and sex were scanned using a computed tomography (CT) scanner and a 3D surface scanner. Two observers separately applied a defined staging method to eight suture sites on these skulls, first looking at the bone macroscopically, then at the 3D surface scan, and finally on the CT scan. Two rounds of observation were carried out by each observer. Intra- and inter-observer error were evaluated, and two sample t-tests used to evaluate if the different types of medium used yielded significantly different observations. The results show a high degree of inter-observer error, and that data obtained from 3D surface scans differ from macroscopic observation (confidence level 95%, P ≤ 0.05). CT scans, in these settings, yielded results comparable to those obtained through macroscopic observations. These results offer many possibilities for future research, including indications on the kind of anthropological methods and anatomical landmarks that might be reliably transferable to the virtual environment. All current methods used in traditional anthropology should be tested, and if they prove unreliable, new techniques to analyse bones from virtual models should be developed.

Key points

• Large discrepancies between observation on dry bones and computer-generated 3D models (surface scans or CT scans) could lead to the re-evaluation of the suitability of traditional anthropological methods for application on 3D models.
• This preliminary study evaluates whether macroscopic, 3D surface scans, and CT scans viewings generate different observations.
• The results indicate that the data are not always coherent across all three media of observation.
• Explanations include the aspect given to the bone by the 3D software, differences between handling bones in real life versus on a computer, and level of expertise of the observers.

     

Abusive contract terms: Is unenforceability a deterrent sanction?

European Journal of Law and Economics - We investigate the impact of sanctions in the presence of abusive contract terms in a litigation model under asymmetric information on consumers’...     

The welfare family

This article analyzes family transformations resulting from the impact of social welfare policies and modernization in Guadeloupe, an island in the French Caribbean. The analysis is taken from a study of three-generational families in which a “pivot” member between 49 and 53 years of age, one parent, and one adult child were interviewed. The study, combining both quantitative and qualitative methods, concerns the forms of cultural, domestic, and economic exchanges between the generations, in addition to the various social welfare allowances received by the members of the families who were interviewed. The results show the complementarity between public and family forms of support. They also show how social welfare benefits have transformed the respective social status of different generations, the functioning of family solidarity, and the ways that poverty is being fought.     

Knowledge Matters: Policy Cross-pressures and Black Partisanship

Black Americans are a core Democratic constituency, despite holding views on social issues that put them in conflict with the party. Conventional wisdom attributes this partisan commitment to the salience of race and concerns about racial inequality. This paper considers whether the Democratic bias derives in part from low levels of political knowledge. Using data from the 2004 National Annenberg Election Study, this paper examines how political knowledge moderates the relationship between social issue cross-pressures and partisan attitudes among Black Americans. I demonstrate that the extent to which Democratic allegiance persists despite policy disagreements depends on whether blacks are sufficiently knowledgeable to act on their policy views, and not simply on the importance that blacks assign to their racial commitments. It is only among politically knowledgeable Black Americans that social issue cross-pressures are at all politically consequential; for them, Democratic partisanship is resilient but not immune to policy disagreements. For blacks with low levels of political knowledge, partisan support is unaffected by policy disagreements. This pattern is most pronounced among religiously active Black Evangelicals, for whom social issues are highly salient.     

Paradoxical correlates of a facilitative parenting programme in prison—counter-productive intervention or first signs of responsible parenthood?

Parenting programmes are rarely part of prisoners' rehabilitation, and evaluations of such programmes are lacking.     

Identification and characterization of JWH-122 used as new ingredient in "Spice-like" herbal incenses

This preliminary communication describes seven babies with β-amyloid precursor protein (βAPP) positive axonal swellings in nerve roots at multiple levels of the spinal cord. All seven babies died of natural causes. Two died in utero providing evidence for nerve root injury in the absence of trauma, two died within one day of birth and the possibility of birth related injury has to be considered. Three babies were over one month of age and had no history or pathological evidence of trauma. These findings show that if axonal injury is carefully sought in every infant death, not just in babies where trauma is suspected, it will be found in a proportion of babies dying from natural diseases. While spinal nerve root axonal injury in infants may suggest trauma, it is not, in itself, diagnostic of trauma.     

Directing Corporate Entrepreneurship Strategy in the Public Sector to Public Value: Antecedents,Components, and Outcomes

ABSTRACT

Over the last three decades, organizations worldwide have used corporate entrepreneurship (CE) as a means of building new competencies, revitalizing operations, achieving renewal, and/or creating value for stakeholders. However, little is understood about factors triggering corporate entrepreneurship strategy (CES) within organizations not driven by profit motives. The purpose of this article is to conceptualize CES in the public sector in order to synthesize, integrate, and link the key concepts within the CE domain, thereby creating new public value and generating new economic activity for the benefit of multiple stakeholders. The public sector CES model includes (1) the antecedents of public sector CES (external environmental conditions that generate entrepreneurial activity); (2) the key components of CES (entrepreneurial strategic vision, organizational conditions that support entrepreneurial processes and behavior, entrepreneurial orientation (EO) that reflects the overall level of such processes and behavior, and individual levels of entrepreneurial behavior); and (3) outcomes of CES within the public sector (organizational outcomes resulting from entrepreneurial actions, including the development of venturing and renewal that, in turn, leads to enhanced public value). We discuss how our model contributes to the CE literature, followed by implications for scholars and practice and future research directions.     

To allot or not to allot public services? An incomplete contract approach

Using an incomplete contract framework, we analyze the consequences of allotment in public procurement. Allotment aims at dividing a public service into several lots that can be awarded to different operators. This increases the number of bidders during the competitive tendering, as well as it reduces the size of the service managed by each operator. We model the impacts of allotment both on price and quality of public services provided under public procurement. When the quality of services depends on non-contractible efforts made by the operators during the execution of the contract, our results show that (1) the operators have higher incentives to make non-contractible efforts when there is no allotment, and that (2) allotment does not maximize the joint payoffs of the public and private parties (i.e. the total surplus), but mainly benefits public authorities representing the users of the service.