Variations in pulp/tooth area ratio as an indicator of age: a preliminary study

This paper details a method for age determination of adults from single rooted teeth. The sample consisted of 100 Italian white Caucasian patients (46 men, 54 women) aged between 18 and 72 years. The single rooted maxillary right canine was utilized in this preliminary study. Pulp/root ration, tooth length, pulp/tooth length ratio, pulp/tooth area and pulp/root width ratios at three different levels were computed. Pearson's correlation coefficients between age and these variables showed that the ratio between pulp and tooth area correlated best with age (r2 = 0.85). Stepwise multiple regression models yielded a linear relationship between pulp/root width at mid-root level and chronological age and a linear relationship when pulp/tooth area was compared to age. Statistical analysis indicated that these two variables explain 84.9% of variations in estimated chronological age. The median of the absolute value of residual errors between actual and estimated ages was less than four years.     

Precision and reliability of pulp/tooth area ratio (RA) of second molar as indicator of adult age

This paper discusses a method for assessing adult age based on the relationship between age and measurement of the pulp/tooth area ratio (RA) of the second molar teeth. The sample consisted of 312 Italian white Caucasian patients (135 men, 177 women) aged between 14 and 24 years. Orthopantomograph samples (OPGs) were analyzed by the same observer and calibrated by kappa statistics. Probabilities of an individual being older than 18 years of age (adult age) were derived using measurements of the ratio pulp/tooth area (RA) of the second molar teeth and the dichotomized stages of third molar development (Tm) as explanatory variables. These results were exploited to establish a threshold value to assign an individual to juvenile or adult age. A cut-off value of RA* = 0.088 was applied if Tm = 0 and RA* = 0.097 if Tm = 1. The sensitivity of this test was 91% and its specificity 94.5%. The proportion of individuals with correct classifications was 92%.     

Results of the 2003-2004 GEP-ISFG collaborative study on mitochondrial DNA: focus on the mtDNA profile of a mixed semen-saliva stain

We report here a review of the seventh mitochondrial DNA (mtDNA) exercise undertaken by the Spanish and Portuguese working group (GEP) of the International Society for Forensic Genetics (ISFG) corresponding to the period 2003-2004. Five reference bloodstains from five donors (M1-M5), a mixed stain of saliva and semen (M6), and a hair sample (M7) were submitted to each participating laboratory for nuclear DNA (nDNA; autosomal STR and Y-STR) and mtDNA analysis. Laboratories were asked to investigate the contributors of samples M6 and M7 among the reference donors (M1-M5). A total of 34 laboratories reported total or partial mtDNA sequence data from both, the reference bloodstains (M1-M5) and the hair sample (M7) concluding a match between mtDNA profiles of M5 and M7. Autosomal STR and Y-STR profiling was the preferred strategy to investigate the contributors of the semen/saliva mixture (M6). Nuclear DNA profiles were consistent with a mixture of saliva from the donor (female) of M4 and semen from donor M5, being the semen (XY) profile the dominant component of the mixture. Strikingly, and in contradiction to the nuclear DNA analysis, mtDNA sequencing results yield a more simple result: only the saliva contribution (M4) was detected, either after preferential lysis or after complete DNA digestion. Some labs provided with several explanations for this finding and carried out additional experiments to explain this apparent contradictory result. The results pointed to the existence of different relative amounts of nuclear and mtDNAs in saliva and semen. We conclude that this circumstance could strongly influence the interpretation of the mtDNA evidence in unbalanced mixtures and in consequence lead to false exclusions. During the GEP-ISFG annual conference a validation study was planned to progress in the interpretation of mtDNA from different mixtures.     

Does local access to employment services reduce unemployment? A GIS analysis of One-Stop Career Centers

The paper uses Geographic Information System to investigate (1) the location of One-Stop Career Centers in Southern California, (2) their level of accessibility to unemployed workers of various demographic groups, (3) their proximity to employment opportunities, and (4) the effect of these spatial relations on Census tract unemployment. We build on the non-profit literature on accessibility to social service providers and on spatial mismatch research that emphasizes the gap between places of work and residence. We argue that One-Stops can play an important role in bridging this gap. We find that One-Stops are well positioned to serve the unemployed, although accessibility varies by race/ethnicity, age, and location. Access to One-Stops reduces local unemployment, particularly in neighborhoods with limited employment opportunities. This effect is larger for groups who experience limited mobility due to gender or race, such as black and female job seekers.

Equal employment opportunity across states: The EEOC 1979–1989

This study uses unpublished EEOC data from 1979–89 to concentrate on how dwindling resources and policy changes advocated by the EEOC chairs regarding the time and intensity devoted to anti-discrimination cases may have yielded regional variation in discrimination outcomes. We arrive at two major conclusions. First, evidence here suggests that the EEOC counteracted potential regional resistance against anti-discrimination laws. Second, we argue that the seeming inefficiency of the EEOC during Thomas' first years as EEOC chair appears to have occurred because he inherited a large pool of low-merit cases.     

Product Liability in the European Union: Compensation and Deterrence Issues

In Europe a common standard of strict liability has been introduced with the European directive 85/374. The implementation of this Directive has not led to an expansion of product liability cases. Moreover neither the product nor the insurance market has been dislocated as in the United States. Both the fact that most liability cases continue to be discussed under national legislation—even when it is based on liability with fault—and the different price of insurance in Eurpean Countries show that the directive did not reach its harmonisation goals. We discuss the optional provisions that limit strict liability under the directive, but claim that the scarce impact of liability laws—in spite of increasing concerns for product safety—may be due to compensation provided by the Welfare State and to the cost of access to justice in Europe. Compensation by the Welfare State is inadequate with respect to the internalisation of the cost of accidents especially when public institutions do not file claims against liable producers. Product safety regulation should have performed the deterrence function. However we also point out that the threat of reputation losses is a powerful incentive for firms to carefully control product safety, when consumers increasingly care about product quality and accidents are heavily advertised by media.JEL Classification: K13, K41     

Tax Evasion Across Italy: Rational Noncompliance or Inadequate Civic Concern?

The paper suggests anexplanation for the geographical dimensionof tax evasion that focuses on thestructure of territorial government. Taxesadministered by the central government arenot differentiated by regions. Poor areasmay prefer a combination of lower taxes andlower levels of public services at both thecentral and the local level. This isespecially true when income and wealthlevels differ among the areas and thedemand for publicly provided goods iscorrelated to these levels. But the use ofnationally uniform tax schedules imposes awelfare burden on poorer areas. While thetax rates of local taxes can be adjusted tolocal preferences, tax evasion may betacitly accepted as a compensation for thewelfare loss deriving from too highcentrally set tax rates.     

Referendum on Renzi: The 2016 Vote on the Italian Constitutional Revision

The 2016 constitutional referendum could have marked a new phase in Italian politics, producing a clear shift towards a majoritarian (and de facto presidential) democracy. But a substantial majority of voters rejected the reforms promoted by Matteo Renzi, leading to his resignation as Prime Minister. Once again, an attempt to redesign the Italian institutional framework failed due to party conflicts. This time, the referendum turned into a vote on Renzi himself. This article examines the background to the institutional reforms and the changing dynamics of the referendum campaign. Discussing the final outcome, it argues that this could produce a sort of U-turn in the long Italian transition.