Voters in a multi-member constituency: The 1977 Auckland election

Voters in multi-member constituencies typical of local government elections must decide how to allocate the votes at their disposal. The secrecy of the ballot has hitherto prevented study of how these preferences are distributed or of the composition of the vote received by individual candidates.Access was gained via a computer printout to the actual behaviour of voters in a five member constituency of the Auckland Regional Authority (New Zealand) in the 1977 local elections. It was contested by two full tickets and three distinctive independents.A computer programme which scanned over 12,000 combinations enabled the vote to be analysed for partisan and other forms of voting. It revealed that 80 per cent of voters were essentially partisan, 62 per cent being Citizens and 37 per cent Labour inclined. However, there was widespread refusal to vote the full ticket, but the ‘spare’ votes were given to independents rather than the opposition.There was little sign of feminist or alphabetical voting, but a weak local notables vote may have existed. The successful candidates depended less on their own partisan supporters.     

The application of Markov chains to demographic projections in smaller geopolitical areas

"This article deals with the use of Markov chains to project population in smaller geopolitical areas. The method consists of projecting only the relative distribution which, applied to a previous demographic projection, gives figures for the population by subregion. An algorithm is worked out, allowing for an estimate to be made of the transitional probabilities of the chain based on easily available data: the total population residing in two or more regions or states in only two specific moments. Once those probabilities have been determined, the projection of the probabilities and of the relative distribution is direct. This method is applied to the metropolitan zone of Mexico City, for which population and territorial extension are projected." (SUMMARY IN ENG)     

Bystander Intervention Efficacy to Reduce Teen Dating Violence Among High School Youth Who Did and Did Not Witness Parental Partner Violence: A Path Analysis of A Cluster RCT

Journal of Family Violence - Youth who witness parental intimate partner violence (IPV) are at increased risk of teen dating violence (DV). This analysis of secondary data investigated whether a...     

Ultraviolet illumination as an adjunctive aid in dental inspection

Tooth-colored resin fillings have become increasingly popular as restorative materials. Their presence in the dentition presents a challenge to the clinician and the forensic odontologist, as detection of the fillings can be difficult both visually and radiographically. As they necessarily form part of the unique dentition of an individual, recognition of the resins is important for forensic identification. Alternative light sources have been used with success in various fields of forensic science. In recent years small LED flashlights emitting at specific wavelengths in the ultraviolet light (UV) range have been developed. Their low cost, small size, and ready availability makes their use practical in both forensic dental inspection and clinical settings. UV inspection is of interest because enamel, dentin and dental materials all have differing fluorescent properties when illuminated by UV light. It was one goal of this research to quantitatively assess the fluorescence properties of modern restorative resins in order to predict their behavior during inspection using UV illumination. The second goal was to demonstrate practical use of UV in dental inspection with examples of how different materials fluoresce. Quantitative measurements were obtained for optical emission wavelength and intensity for 15 modern resins using a spectrophotometer. Results indicated that resin brands fluoresce at different wavelengths and with varying intensities. Practical use and comparison of the flashlights revealed that the most useful excitation wavelengths for resin detection were in the UVA range (365 and 380 nm). Porcelain restorations and composite resin fillings exhibited different responses to these two wavelengths and thus use of both is recommended for forensic dental inspection.     

Uniqueness of the Dentition as Impressed in Human Skin: A Cadaver Model*

Abstract: Bitemark interpretation assumes that the human dentition is unique and that its attributes can be accurately transferred to skin. A cadaver model was used to investigate whether the correct biter could be determined from similarly aligned dentitions once the dentitions were impressed in human skin. One‐hundred dental stone models, which were measured and determined to be unique, were divided into 10 groups based upon similarities of mal‐alignment patterns. One model was randomly selected from each group and bites were produced on unembalmed human cadavers. Metric/angular measurements and hollow volume overlays of the models were compared with the bites made. The percentage of dentitions from each group as well as the 100 dental model population that could not be excluded as the biter was determined. Results showed difficulty distinguishing the biter from individuals with similarly aligned dentitions and in some cases, an incorrect biter appeared better correlated to the bite.     

The Response of Skin to Applied Stress: Investigation of Bitemark Distortion in a Cadaver Model*

Abstract: Knowledge of distortional properties of skin is important in bitemark analysis. Thus, the response of skin to stress from bites was investigated. Four sets of models were created from the dentition of one individual. Anterior teeth were systematically removed to vary contact surface area. A biting apparatus was constructed with an integrated load cell. Forty‐six bites were created perpendicular to Langer lines on six cadavers. Rate of force application and bite pressure were controlled. Metric/angular measurement and hollow volume overlays were employed. Distortion produced by each dentition was calculated and assessed. Results showed that as teeth impressed loose tissue, mesial/distal distance increased, angles of rotation flattened, and inter‐canine distance lengthened. An opposite effect was seen in tight tissue. When the surface area of the dentition was reduced, a mixture of these effects was observed. Conclusions indicated that stiffness of the tissue was the most important variable in bitemark distortion.