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Abstract It is clear that attempts to discern consumer attitudes toward neighborhood form yield only ambiguity. Denser, more walkable residential environments are impossible to define in a universally applicable manner because of the unique characteristics of an individual neighborhood and its relationship to a region's climate, tradition, and heritage. Consumer preferences are likewise ambiguous and contradictory; this is simply due to many Americans’ lack of personal familiarity with compact, walkable neighborhoods. 相似文献
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Preliminary Validation of Handheld X‐Ray Fluorescence Spectrometry: Distinguishing Osseous and Dental Tissue from Nonbone Material of Similar Chemical Composition 下载免费PDF全文
Heather A. Zimmerman M.A. John J. Schultz Ph.D. Michael E. Sigman Ph.D. 《Journal of forensic sciences》2015,60(2):382-390
One of the tasks of a forensic anthropologist is to sort human bone fragments from other materials, which can be difficult when dealing with highly fragmented and taphonomically modified material. The purpose of this research is to develop a method using handheld X‐ray fluorescence (HHXRF) spectrometry to distinguish human and nonhuman bone/teeth from nonbone materials of similar chemical composition using multivariate statistical analyses. The sample materials were derived primarily from previous studies: human bone and teeth, nonhuman bone, nonbiological materials, nonbone biological materials, and taphonomically modified materials. The testing included two phases, testing both the reliability of the instrument and the accuracy of the technique. The results indicate that osseous and dental tissue can be distinguished from nonbone material of similar chemical composition with a high degree of accuracy (94%). While it was not possible to discriminate rock apatite and synthetic hydroxyapatite from bone/teeth, this technique successfully discriminated ivory and octocoral. 相似文献
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Paul R. Zimmerman 《European Journal of Law and Economics》2004,18(2):169-190
Alcohol consumption is widely believed to influence criminal activity, and numerous sociological, criminological, and psychological studies demonstrate an apparent positive correlation between drinking and crime. Using a multiattribute model of offender and victim behavior, this study examines the theoretical effects of changes in the price of alcohol on the incidence of crimes committed for economic gain. It is shown that in the general case price effects do not result in an unambiguous decrease in the rates of crime or victimization even when the models are constructed to impose a bias towards the finding of a causal negative price effect. Using a modified model of the drinking offender that imposes even further structure on the model, it is shown that the realization and magnitude of a negative equilibrium alcohol price effect will likely depend upon the implementation of complementary alcohol control policies. The implications of the theoretical analysis to policy implementation and empirical research are also considered. 相似文献
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An investigation into the empirical relationship between time with peers,friendship, and delinquency
Purpose
Much of the research on peer influence has examined the relationship between peer associations and delinquency. Relatively little empirical research has addressed the effects of delinquent behavior on peer intimacy and time spent with peers. Our research attempts to fill these gaps in the literature as we hypothesize that, net of peer delinquency, delinquents spend more time with their peers but are less closely attached to their peers.Methods
Using data from two waves of the National Youth Survey (NYS), we present two sets of regression models to account for selection bias resulting from whether respondents reported having friends. To assess the stability of our findings, we supplement our presented findings with extensive use of alternate estimation strategies.Results
Conclusions regarding our hypotheses do not vary by estimation strategy. Delinquents spend more time with their peers, but delinquents and non-delinquents do not report differences in closeness to their peers.Conclusions
Given our control variables, our finding introduces complexity in the causal priority between time spent with peers and delinquency. Prior delinquency may be a predictor of more time with peers, but partly as an avenue for opportunities for crime, not for the sake of friendship. 相似文献58.
Heudt L Debois D Zimmerman TA Köhler L Bano F Partouche F Duwez AS Gilbert B De Pauw E 《Forensic science international》2012,219(1-3):64-75
Inkjet ink analysis is the best way to discriminate between printed documents, or even though more difficult, to connect an inkjet printed document with a brand or model of printers. Raman spectroscopy and laser desorption mass spectrometry (LDMS) have been demonstrated as powerful tools for dyes and pigments analysis, which are ink components. The aim of this work is to evaluate the aforementioned techniques for inkjet inks analysis in terms of discriminating power, information quality, and nondestructive capability. So, we investigated 10 different inkjet ink cartridges (primary colors and black), 7 from the HP manufacturer and one each from Epson, Canon and Lexmark. This paper demonstrates the capabilities of three methods: Raman spectroscopy, LDMS and MALDI-MS. Raman spectroscopy, as it is preferable to try the nondestructive approach first, is successfully adapted to the analysis of color printed documents in most cases. For analysis of color inkjet inks by LDMS, we show that a MALDI matrix (9-aminoacridine, 9AA) is needed to desorb and to ionize dyes from most inkjet inks (except Epson inks). Therefore, a method was developed to apply the 9AA MALDI matrix directly onto the piece of paper while avoiding analyte spreading. The obtained mass spectra are very discriminating and lead to information about ink additives and paper compositions. Discrimination of black inkjet printed documents is more difficult because of the common use of carbon black as the principal pigment. We show for the first time the possibility to discriminate between two black-printed documents coming from different, as well as from the same, manufacturers. Mass spectra recorded from black inks in positive ion mode LDMS detect polyethylene glycol polymers which have characteristic mass distributions and end groups. Moreover, software has been developed for rapid and objective comparison of the low mass range of these positive mode LDMS spectra which have characteristic unknown peaks. 相似文献
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Duel or Dual: An Interdisciplinary Approach to Parenting Coordination for Uber‐Conflicted Parenting Relationships 下载免费PDF全文
Parenting coordination for families struggling with severe conflict can be challenging for both the family and the parenting coordinator (PC). These families can put an inordinate strain on the PC as they lobby their positions and try to bias the PC against the other parent. The interdisciplinary dual‐PC model is an innovative approach using aspects of the collaborative practice model to enhance the efficacy of the process while utilizing the strengths of both disciplines. Through a case illustration, the identification of the family dynamics and situations that give rise to use of this approach shall become clear. This article also demonstrates the potential benefits to both the family and the PCs. All aspects synthesize into a cohesive, well‐balanced approach to the uber‐conflicted parenting relationships. 相似文献
60.
Chester L. Britt Michael Rocque Gregory M. Zimmerman 《Journal of Quantitative Criminology》2018,34(2):591-607