4,872 research outputs found

    Does PAL work? An exploration of affect amongst First-year HE in FE students

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    The study evaluates a peer-assisted learning (PAL) scheme as an effective strategy in alleviating levels of negative emotions and, in the process, contributes to explorations of affect in first-year students in an HE in FE environment, with a particular focus on anxiety and related emotions. Various types of anxieties are defined in the context of a student’s experience in HE, followed by an explanation of the present interventional study in an HE in FE institution, including the survey method used to collect data analyzed through SPSS. Surprisingly, the main findings are that overall anxiety and worry increased for students belonging to most faculties with time, regardless of participation in the PAL scheme. A positive finding was nonetheless that anxiety levels increased more steadily for students who belonged to the control group. The PAL scheme may have thus influenced how less anxious PAL students felt, compared to those who did not participate in the PAL scheme who were left feeling more anxious at the end of the semester

    Morality of offenders : investigating morality of individuals who commit crime

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    Morality is often difficult to define due to its abstract nature, relating to both internal beliefsand morals that an individual possess as well as external factors and circumstances that arisewhich impact on an individual’s moral decision-making ability. Prior research suggests thereis a relationship between morality and criminal behaviour but that this relationshipis multifaceted and complex. It is often the assumed that criminals have a lower sense ofmorality. This study aims to investigate individuals’ own understanding of morality and crime,their level of morality and whether situational precipitators influence the moral decisionmaking process and, ultimately, their propensity to commit crime.The research used mixed-methods to examine how a range of complex factors may influencecriminal behaviour. The fieldwork was conducted in two, interconnected, phases. In phase one,184 survey responses captured relevant data on individual demographic characteristics, levelsof self-reported moral attitudes and past criminal behaviour. Phase two involved follow-upinterviews with a purposively-selected sample of the survey participants. Eight interviews werecarried out, seven who self-reported previously committing a range of crimes and one who didnot. The interviews were used to tease out some of the complexities between individualsunderstanding of morality and situational precipitators, and additionally explore the flexibleand dynamic nature of individuals’ morals within the complexity of different decisions theymade in relation to committing crimes.Findings suggest that there appeared to be no difference in levels of morality between thosewho do and do not commit crime, but stigma relating to the belief that criminals ‘lack morals’emerged. Situational precipitators also became evident and appeared to influence anindividual’s moral decision-making process to commit crime, especially peer andsocial pressures. Interestingly, morality appeared to have the ability to both inhibit andencourage criminal behaviours, with morality proving to be a fluid component of humanbehaviour, often dependant on situational contexts. This research, therefore, contributes toexisting knowledge demonstrating morality and criminal behaviour to share a relationship, butone which is complex, dynamic and influenced by multiple factors

    Identification of dermestid beetle modification on Neolithic Maltese human bone: Implications for funerary practices at the Xemxija tombs

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    Taphonomic modifications to Neolithic human skeletal remains from six rock-cut tombs in Malta has provided key information about funerary practices and the local environment. Application of microscopic analysis, computed tomography (CT) scanning, and 3D imaging of the modifications has allowed their comparison with similar examples in modern and archaeological skeletal material. The modifications are interpreted as pupal chambers and feeding damage by dermestid beetles. Based on observation of the behaviour and ecology of dermestid beetles, we suggest several scenarios for funerary practices at the Xemxija tombs which nuance our current understanding of collective burial during the late Neolithic in Malta.Magdalene College, Cambridg

    Diversity of floral visitors to sympatric Lithophragma species differing in floral morphology

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    Most coevolving relationships between pairs of species are embedded in a broader multispecific interaction network. The mutualistic interaction between Lithophragma parviflorum (Saxifragaceae) and its pollinating floral parasite Greya politella (Lepidoptera, Prodoxidae) occurs in some communities as a pairwise set apart from most other interactions in those communities. In other communities, however, this pair of species occurs with congeners and with other floral visitors to Lithophragma. We analyzed local and geographic differences in the network formed by interactions between Lithophragma plants and Greya moths in communities containing two Lithophragma species, two Greya species, and floral visitors other than Greya that visit Lithophragma flowers. Our goal was to evaluate if non-Greya visitors were common, if visitor assembly differs between Lithophragma species and populations and if these visitors act as effective pollinators. Sympatric populations of L. heterophyllum and L. parviflorum differ in floral traits that may affect assemblies of floral visitors. Visitation rates by non-Greya floral visitors were low, and the asymptotic number of visitor species was less than 20 species in all populations. Lithophragma species shared some of the visitors, with visitor assemblages differing between sites more for L. heterophyllum than for L. parviflorum. Pollination efficacy experiments showed that most visitors were poor pollinators. Single visits to flowers by this assemblage of species resulted in significantly higher seed set in Lithophragma heterophyllum (30.6 ± 3.9 SE) than in L. parviflorum (4.7 ± 3.4 SE). This difference was consistent between sites, suggesting that these visitors provide a better fit to the floral morphology of L. heterophyllum. Overall, none of the non-Greya visitors appears to be either sufficiently common or efficient as a pollinator to impose strong selection on any of these four Lithophragma populations in comparison with Greya, which occurs within almost all populations of these species throughout their geographic ranges

    Magnetic anisotropy study of ion-beam synthesized cobalt nanocrystals

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    The magnetic properties of Co nanocrystals in crystalline Al2 O3 and amorphous Si O2 are investigated. In contrast to the Si O2 matrix, the Al2 O3 matrix provides higher magnetic anisotropy and coercive field for Co nanocrystals. Using x-ray photoemission spectroscopy, it is found that a Co Al2 O4 layer forms in Co implanted region. Transmission electron microscopy shows that this Co Al2 O4 layer is grown epitaxially around Co nanocrystals. The higher coercive field of the Co nanocrystals in Al2 O3 is attributed to the presence of antiferromagnetic Co Al2 O4 layers. © 2006 American Institute of Physics

    Statistically derived contributions of diverse human influences to twentieth-century temperature changes

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    The warming of the climate system is unequivocal as evidenced by an increase in global temperatures by 0.8 °C over the past century. However, the attribution of the observed warming to human activities remains less clear, particularly because of the apparent slow-down in warming since the late 1990s. Here we analyse radiative forcing and temperature time series with state-of-the-art statistical methods to address this question without climate model simulations. We show that long-term trends in total radiative forcing and temperatures have largely been determined by atmospheric greenhouse gas concentrations, and modulated by other radiative factors. We identify a pronounced increase in the growth rates of both temperatures and radiative forcing around 1960, which marks the onset of sustained global warming. Our analyses also reveal a contribution of human interventions to two periods when global warming slowed down. Our statistical analysis suggests that the reduction in the emissions of ozone-depleting substances under the Montreal Protocol, as well as a reduction in methane emissions, contributed to the lower rate of warming since the 1990s. Furthermore, we identify a contribution from the two world wars and the Great Depression to the documented cooling in the mid-twentieth century, through lower carbon dioxide emissions. We conclude that reductions in greenhouse gas emissions are effective in slowing the rate of warming in the short term.F.E. acknowledges financial support from the Consejo Nacional de Ciencia y Tecnologia (http://www.conacyt.gob.mx) under grant CONACYT-310026, as well as from PASPA DGAPA of the Universidad Nacional Autonoma de Mexico. (CONACYT-310026 - Consejo Nacional de Ciencia y Tecnologia; PASPA DGAPA of the Universidad Nacional Autonoma de Mexico
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