36 research outputs found
A Critical Review of Ian Barbour's Analysis of Discussions on the Mind/Body Problem
The concepts of mind, soul, and consciousness are key to an understanding of ourselves
and how we interact with the universe around us. Ian Barbour names the mind/body problem
as one of the major subjects of long-term discussion among religion, philosophy, and
science, including cognitive psychology. However, his treatment of the traditional philosophical positions on this topic is wanting. What is most intriguing is that, after years of
discussion, newer approaches to the mind/body problem seem to have come full circle, sharing many commonalities with the much older approach of property dualism
The Contrasting Character of Early and Late Transition Metal Fluorides as Hydrogen Bond Acceptors
The association constants and enthalpies for the binding of hydrogen bond donors to group 10 transition metal complexes featuring a single fluoride ligand (trans-[Ni(F)(2-C5NF4)(PR3)2], R = Et 1a, Cy 1b, trans-[Pd(F)(4-C5NF4)(PCy3)2] 2, trans-[Pt(F){2-C5NF2H(CF3)}(PCy3)2] 3 and of group 4 difluorides (Cp2MF2, M = Ti 4a, Zr 5a, Hf 6a; Cp2MF2, M = Ti 4b, Zr 5b, Hf 6b) are reported. These measurements allow placement of these fluoride ligands on the scales of organic H-bond acceptor strength. The H-bond acceptor capability β (Hunter scale) for the group 10 metal fluorides is far greater (1a 12.1, 1b 9.7, 2 11.6, 3 11.0) than that for group 4 metal fluorides (4a 5.8, 5a 4.7, 6a 4.7, 4b 6.9, 5b 5.6, 6b 5.4), demonstrating that the group 10 fluorides are comparable to the strongest organic H-bond acceptors, such as Me3NO, whereas group 4 fluorides fall in the same range as N-bases aniline through pyridine. Additionally, the measurement of the binding enthalpy of 4-fluorophenol to 1a in carbon tetrachloride (?23.5 ± 0.3 kJ mol-1) interlocks our study with Laurence's scale of H-bond basicity of organic molecules. The much greater polarity of group 10 metal fluorides than that of the group 4 metal fluorides is consistent with the importance of p?-d? bonding in the latter. The polarity of the group 10 metal fluorides indicates their potential as building blocks for hydrogen-bonded assemblies. The synthesis of trans-[Ni(F){2-C5NF3(NH2)}(PEt3)2], which exhibits an extended chain structure assembled by hydrogen bonds between the amine and metal-fluoride groups, confirms this hypothesis
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The Contrasting Character of Early and Late Transition Metal Fluorides as Hydrogen Bond Acceptors
The association constants and enthalpies for the binding of hydrogen bond donors to group 10 transition metal complexes featuring a single fluoride ligand (trans-[Ni(F)(2-C5NF4)(PR3)2], R = Et 1a, Cy 1b, trans-[Pd(F)(4-C5NF4)(PCy3)2] 2, trans-[Pt(F){2-C5NF2H(CF3)}(PCy3)2] 3 and of group 4 difluorides (Cp2MF2, M = Ti 4a, Zr 5a, Hf 6a; Cp*2MF2, M = Ti 4b, Zr 5b, Hf 6b) are reported. These measurements allow placement of these fluoride ligands on the scales of organic H-bond acceptor strength. The H-bond acceptor capability β (Hunter scale) for the group 10 metal fluorides is far greater (1a 12.1, 1b 9.7, 2 11.6, 3 11.0) than that for group 4 metal fluorides (4a 5.8, 5a 4.7, 6a 4.7, 4b 6.9, 5b 5.6, 6b 5.4), demonstrating that the group 10 fluorides are comparable to the strongest organic H-bond acceptors, such as Me3NO, whereas group 4 fluorides fall in the same range as N-bases aniline through pyridine. Additionally, the measurement of the binding enthalpy of 4-fluorophenol to 1a in carbon tetrachloride (−23.5 ± 0.3 kJ mol–1) interlocks our study with Laurence’s scale of H-bond basicity of organic molecules. The much greater polarity of group 10 metal fluorides than that of the group 4 metal fluorides is consistent with the importance of pπ–dπ bonding in the latter. The polarity of the group 10 metal fluorides indicates their potential as building blocks for hydrogen-bonded assemblies. The synthesis of trans-[Ni(F){2-C5NF3(NH2)}(PEt3)2], which exhibits an extended chain structure assembled by hydrogen bonds between the amine and metal-fluoride groups, confirms this hypothesis
Corporate reputation in the spanish context: An interaction between reporting to stakeholders and industry.
ABSTRACT: The authors describe the intensity and orientation of the corporate social responsibility (CSR) reporting in four Spanish industries and explore the relationship that exists between both concepts and an independent measurement of reputation for CSR (CSRR). The results demonstrate that the CSR reporting is especially relevant and useful in the finance industry. Finance companies report significantly more CSR information than most industries in Spain, and this reporting is more closely linked to their CSRR than the CSR reporting of basic, consumer goods and services industries.
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Thinking about Eating Food Activates Visual Cortex with Reduced Bilateral Cerebellar Activation in Females with Anorexia Nervosa: An fMRI Study
Background: Women with anorexia nervosa (AN) have aberrant cognitions about food and altered activity in prefrontal cortical and somatosensory regions to food images. However, differential effects on the brain when thinking about eating food between healthy women and those with AN is unknown. Methods: Functional magnetic resonance imaging (fMRI) examined neural activation when 42 women thought about eating the food shown in images: 18 with AN (11 RAN, 7 BPAN) and 24 age-matched controls (HC). Results: Group contrasts between HC and AN revealed reduced activation in AN in the bilateral cerebellar vermis, and increased activation in the right visual cortex. Preliminary comparisons between AN subtypes and healthy controls suggest differences in cortical and limbic regions. Conclusions: These preliminary data suggest that thinking about eating food shown in images increases visual and prefrontal cortical neural responses in females with AN, which may underlie cognitive biases towards food stimuli and ruminations about controlling food intake. Future studies are needed to explicitly test how thinking about eating activates restraint cognitions, specifically in those with restricting vs. binge-purging AN subtypes
Altered patterns of cortical activation in ALS patients during attention and cognitive response inhibition tasks
Since amyotrophic lateral sclerosis (ALS) can be accompanied by executive dysfunction, it is hypothesised that ALS patients will have impaired performance on tests of cognitive inhibition. We predicted that ALS patients would show patterns of abnormal activation in extramotor regions when performing tests requiring the inhibition of prepotent responses (the Stroop effect) and the inhibition of prior negatively primed responses (the negative priming effect) when compared to healthy controls. Functional magnetic resonance imaging was used to measure activation during a sparse sequence block design paradigm investigating the Stroop and negative priming effects in 14 ALS patients and 8 healthy age- and IQ-matched controls. Behavioural measures of performance were collected. Both groups’ reaction times (RTs) reflected the Stroop effect during scanning. The ALS and control groups did not differ significantly for any of the behavioural measures but did show significant differences in cerebral activation during both tasks. The ALS group showed increased activation predominantly in the left middle temporal gyrus (BA 20/21), left superior temporal gyrus (BA 22) and left anterior cingulate gyrus (BA 32). Neither group’s RT data showed clear evidence of a negative priming effect. However the ALS group showed decreased activation, relative to controls, particularly in the left cingulate gyrus (BA 23/24), left precentral gyrus (BA 4/6) and left medial frontal gyrus (BA 6). Greater cerebral activation in the ALS group accompanying the performance of the Stroop effect and areas of decreased activation during the negative priming comparison suggest altered inhibitory processing in ALS, consistent with other evidence of executive dysfunction in ALS. The current findings require further exploration in a larger study
The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
The Astropy project supports and fosters the development of open-source and openly-developed Python packages that provide commonly-needed functionality to the astronomical community. A key element of the Astropy project is the core package Astropy, which serves as the foundation for more specialized projects and packages. In this article, we provide an overview of the organization of the Astropy project and summarize key features in the core package as of the recent major release, version 2.0. We then describe the project infrastructure designed to facilitate and support development for a broader ecosystem of inter-operable packages. We conclude with a future outlook of planned new features and directions for the broader Astropy project
The influence of social disclosure on the relationship between Corporate Financial Performance and Corporate Social Performance*
Esta pesquisa tem como objetivo geral investigar o efeito moderador do disclosure do Corporate Social Performance (D-CSP) na relação entre Corporate Social Performance (CSP - Performance Social Corporativa) e Corporate Financial Performance (CFP - Performance Financeira Corporativa). Com base nesse objetivo, a pesquisa apresentou um modelo no qual o D-CSP atua como moderador em relação aos stakeholders primários (funcionários, comunidade e fornecedores). O D-CSP é um mecanismo pelo qual os diversos aspectos sociais envolvidos nas políticas, ações e atividades discricionárias identificados no gerenciamento para stakeholder podem ser avaliados. Para testar o modelo, utilizou-se uma amostra de 1.147 empresas pertencentes a 10 distintos setores e aos cinco continentes do planeta. Utilizaram-se dados da base Bloomberg de 2010 a 2014, totalizando 5.623 observações. A relação foi testada utilizando-se o modelo de regressão linear múltipla com dados em painel com efeitos fixos, recorrendo-se à correção de Newey-West erro padrão robusto. Para efetuar os testes, utilizaram-se três construtos: D-CSP, CSP e CFP. Empregou-se, como medida de CSP, a CSP dos stakeholders funcionários, fornecedores e comunidade. Como medida do D-CSP, aplicaram-se os scores de disclosure de CSP disponíveis na base de dados e, como medida da CFP, utilizou-se o retorno sobre ativo (ROA). Os testes realizados apontaram a existência do efeito moderador positivo do disclosure na relação entre CSP de stakeholders primários e CFP. Os resultados permitem inferir que, além de apresentar um CSP positivo em relação aos stakeholders primários, é necessário divulgar tais resultados, contribuindo para desempenhos financeiros superiores.This study’s general objective is to investigate the moderating effect of Corporate Social Performance Disclosure (D-CSP) on the relationship between Corporate Social Performance (CSP) and Corporate Financial Performance (CFP). Based on this objective, the study presented a model in which D-CSP acts as a moderator in relation to primary stakeholders (employees, community, and suppliers). D-CSP is a mechanism through which the various social aspects involved in discretionary policies, actions, and activities identified in the management for stakeholders process can be evaluated. A sample of 1,147 companies belonging to 10 different sectors and five continents was used to test the model. Data were collected from the Bloomberg database, totaling 5,735 observations, from 2010 to 2014. The relationship was tested using the multiple linear regression model involving panel data with fixed effects, and the Newey-West robust standard errors correction. Three constructs, D-CSP, CSP, and CFP, were used to perform the tests. As a CSP measure, the CSP of the employee, supplier, and community stakeholders was used. As a D-CSP measure, the CSP disclosure scores available from the database were used, and return on assets (ROA) was used as a CFP measure. The tests carried out indicated the existence of a positive moderating effect of disclosure on the relationship between the CSP of primary stakeholders and CFP. Besides presenting a positive CSP in relation to the primary stakeholders the results enable it to be inferred that these results need to be disclosed, thus contributing to higher corporate financial performance
Loss of a Functionally and Structurally Distinct ld-Transpeptidase, LdtMt5, Compromises Cell Wall Integrity inMycobacterium tuberculosis
The symbiotic planktonic foraminiferaOrbulina universainhabits open ocean oligotrophic ecosystems where dissolved nutrients are scarce and often limit biological productivity. It has previously been proposed thatO. universameets its nitrogen (N) requirements by preying on zooplankton, and that its symbiotic dinoflagellates recycle metabolic 'waste ammonium' for their N pool. However, these conclusions were derived from bulk(15)N-enrichment experiments and model calculations, and our understanding of N assimilation and exchange between the foraminifer host cell and its symbiotic dinoflagellates remains poorly constrained. Here, we present data from pulse-chase experiments with(13)C-enriched inorganic carbon,N-15-nitrate, and(15)N-ammonium, as well as a(13)C- and(15)N- enriched heterotrophic food source, followed by TEM (transmission electron microscopy) coupled to NanoSIMS (nanoscale secondary ion mass spectrometry) isotopic imaging to visualize and quantify C and N assimilation and translocation in the symbiotic system. High levels of(15)N-labelling were observed in the dinoflagellates and in foraminiferal organelles and cytoplasm after incubation with(15)N-ammonium, indicating efficient ammonium assimilation. Only weak(15)N-assimilation was observed after incubation with(15)N-nitrate. Feeding foraminifers with(13)C- and(15)N-labelled food resulted in dinoflagellates that were labelled with(15)N, thereby confirming the transfer of(15)N-compounds from the digestive vacuoles of the foraminifer to the symbiotic dinoflagellates, likely through recycling of ammonium. These observations are important for N isotope-based palaeoceanographic reconstructions, as they show that delta N-15 values recorded in the organic matrix in symbiotic species likely reflect ammonium recycling rather than alternative N sources, such as nitrates