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81.
The development of ink dating methods requires an important amount of work in order to be reliably applicable in practice. Major tasks include the definition of ageing parameters to monitor ink ageing. An adequate parameter should ideally fulfil the following criteria: it should evolve as a function of time in a monotonic way, be measurable in a majority of ink entries, be as accurate and reproducible as possible, and finally it should not be influenced too much by transfer and storage conditions. This work aimed at evaluating the potential of seven ageing parameters for ink dating purposes: the phenoxyethanol quantity, relative peak areas (RPA), three solvent loss ratios (R%, R%*, NR%) and two solvent loss parameters (RNORM, NRNORM). These were calculated over approximately one year for 25 inks selected from a large database to represent different ageing behaviours. Ink entries were analysed using liquid extraction followed by GC/MS analysis. Results showed that natural ageing parameters (NR% and NRNORM) were not suitable ageing parameters for ink entries older than a few weeks. RPA used other compounds present in ink formulations in combination to PE in order to normalise the results. However, it presented particular difficulties as they could not be defined for all inks and were thus applicable only for 64% of the studied inks. Finally, the PE quantity, R% and RNORM allowed to follow the ageing of the selected inks over the whole time frame and were identified as the most promising. These were thus selected to test three different interpretation models in the second part of this article. The possibilities and limitations of ink dating methods will be discussed in a legal perspective. 相似文献
82.
Matthias Frank M.D. ; Grit Rademacher M.D. ; Uli Schmucker M.D. ; Stephan David M.D. ; Axel Ekkernkamp M.D. 《Journal of forensic sciences》2009,54(2):408-410
Abstract: Authentic black-powder muzzle-loader weapons or replicas are used today primarily for re-enactments of historic battles. A lay actor playing the role of a Prussian infantryman sustained life-threatening gunshot injuries during a recent re-enactment of a historic battle of the Sixth Coalition. As only blank historic muzzle-loading weaponry was used, the origin of the missile causing the wounding was initially unclear. Further investigation revealed a ramrod that had been propelled out of the barrel of another gunner's smooth-bore gun as cause of injury. The ramrod was hurled on a trajectory of more than 20 m, breaking the victim's shouldered barrel and hitting the victim resulting in severe abdominal, thoracic, and upper limb injuries. The critical incidents while handling muzzle-loading weaponry leading to premature discharge are elucidated. Furthermore, this report demonstrates how actual diagnostics and subsequent surgical treatment enabled this infantryman to survive an injury to which his comrades-in-arms would have succumbed 200 years ago. 相似文献
83.
In the fallout of the 2008 crisis, macroprudential policy has been installed as the policy remedy against future financial instability, a primary focus being developments in the real estate sector. With house prices consistently rising in the EU since 2014, causing alarm among macroprudential supervisory bodies, a core question of EU regulatory governance is how far macroprudential bodies have been capable of bringing about countercyclical actions against the build-up of such vulnerabilities. This paper investigates this question using a novel dataset of macroprudential intensity coded for the 17 EU countries that experienced real estate vulnerabilities post-euro crisis. Specifically, it asks which configuration of conditions account for the (in)capacity of countries to impose stringent countercyclical regulations against housing booms? Using fuzzy set qualitative comparative analysis technics coupled with qualitative analysis of country cases using expert interviews, we find that the absence of political salience of homeownership and the political independence of macroprudential authorities to be crucial conditions that jointly explain countercyclical macroprudential activity. These findings, which show two pathways to action have implications for the capacity of the EU to prevent future crises and future reform of the EU prudential framework. 相似文献
84.
Michelle Birkett Dorothy L. Espelage Brian Koenig 《Journal of youth and adolescence》2009,38(7):989-1000
Lesbian, gay, and bisexual students (LGB) and those questioning their sexual orientation are often at great risk for negative
outcomes like depression, suicidality, drug use, and school difficulties (Elliot and Kilpatrick, How to Stop Bullying, A KIDSCAPE
Guide to Training, 1994; Mufoz-Plaza et al., High Sch J 85:52–63, 2002; Treadway and Yoakam, J School Health 62(7):352–357, 1992). This study examined how school contextual factors such as homophobic victimization and school climate influence negative
outcomes in LGB and questioning middle school students. Participants were 7,376 7th and 8th grade students from a large Midwestern
county (50.7% Female, 72.7% White, 7.7% Biracial, 6.9% Black, 5.2% Asian, 3.7% Hispanic, and 2.2% reported “other”). LGB and
sexually questioning youth were more likely to report high levels of bullying, homophobic victimization, and various negative
outcomes than heterosexual youth. Students who were questioning their sexual orientation reported the most bullying, the most
homophobic victimization, the most drug use, the most feelings of depression and suicidality, and more truancy than either
heterosexual or LGB students. A positive school climate and a lack of homophobic victimization moderated the differences among
sexual orientation status and outcomes. Results indicate that schools have the ability to lessen negative outcomes for LGB
and sexually questioning students through creating positive climates and reducing homophobic teasing. 相似文献
85.
Megan L. Mayberry Dorothy L. Espelage Brian Koenig 《Journal of youth and adolescence》2009,38(8):1038-1049
This study tested a social-ecological model of adolescent substance use. Multilevel modeling was used to investigate how systems,
such as parents, peers, schools, and communities, directly influence and interact together to influence adolescent substance
use. Participants included 14,548 (50.3% female) middle school students who were 78.6% White, 5.4% Biracial, 4.8% Asian, 4.8%
Black, and 3.6% Hispanic. Participants completed a survey with scales assessing substance use, peer influences, parental influences,
and characteristics of their school and community. Hierarchical linear modeling (HLM) was used to consider the variation of
parental and peer influences on substance use and how schools and communities relate to both substance use and the relationship
between substance use and peer and parental factors. Results indicated that a positive school climate and a positive sense
of community were associated with less adolescent substance use and that a positive sense of community moderated the relation
between peer and parental influence on adolescent substance use, thereby acting as a protective factor.
相似文献
Brian KoenigEmail: |
86.
Matthias S. Fifka Anna-Lena Kühn Markus Stiglbauer 《Journal of Public Affairs (14723891)》2018,18(3):e1670
So far, no study has investigated determinants that shape corporate social responsibility (CSR) communication in mission statements, as previous studies have focused on CSR reports and homepages. Our study, which is based on institutional theory, fills this gap. By conducting a directed content analysis of the statements of 200 listed companies in the United States and India, we examine the content conveyed with respect to 5 CSR dimensions, the 5 most prominent stakeholder groups, and additional components of CSR mission statements. Moreover, we examine whether Unted States and Indian companies' CSR communication varies according to their (a) home country, (b) industry affiliation, (c) degree of internationalization, (d) company size, (e) profitability, (f) founding year, (g) length of the CSR mission statement, and (h) compliance with the guidelines of the Global Reporting Initiative. Whereas the findings reveal that the companies' home country, degree of internationalization, and size have no considerable bearing on their CSR communication, we evidence that their communication can be explained by their industry affiliation, the profitability ratio return on assets, founding year, length of the statement, and compliance with the Global Reporting Initiative guidelines. Moreover, we explain the cross-country conformity of CSR communication by a convergence towards global and universal CSR communication approaches. 相似文献
87.
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90.
The paper deals with vertical tax competition between self-interested governments in a dynamic environment. In a federation, competition between the federal and the state governments arises when tax sources are not separated but pooled. Since dynamic inefficiencies will be stressed, the focus is on fiscal stock externalities rather than on flow externalities. The paper shows that the Leviathans in a federation tax the fiscal common resource more extensively than the single Leviathan in a unitary state. Furthermore, the positive impact of political stability on public consumption of the fiscal common will be discussed. 相似文献