1,633 research outputs found

    ARTIFICIAL INTELLIGENCE, TECH CORPORATE GOVERNANCE AND THE PUBLIC INTEREST REGULATORY RESPONSE

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    Rationalising corporate disregard

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    The area of corporate disregard has a poor reputation for certainty of reasoning. To provide an alternative way of approaching the issue, we conducted an empirical study of the relationship between rationale and outcome within UK corporate disregard cases from the nineteenth to the twenty-first century. We examine the evidence from three perspectives. First, we examine the broad range of instrumental rationales found in the case law by disregard rates in order to identify where issues might be arising with individual rationales. Secondly, as suggested in the wider empirical literature, we examine the rationale rates by jurisdiction in order to see whether there were problematic interpretation issues concentrated in particular parts of the court levels. Thirdly, we examine the rationale rates by substantive claim to see whether contextual aspects of the doctrine, as the court identified with family law in Prest, were influencing outcomes. By providing an empirical study on the rationales instrumental to corporate disregard outcomes we aim to introduce a broader evidential view of where concerns may lie, which can both aid critique of key judicial historical developments such as Adams v. Cape Industries (1990) and Prest v. Petrodel Resources Ltd (2013) and provide a broader evidence base that might aid future judicial reform of the area

    Improving Access to Child Health Care in Indonesia Through Community Case Management

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    © 2016, Springer Science+Business Media New York. Objectives In order to reduce infant mortality in Indonesia, community case management (CCM) was introduced. CCM is a community-based service delivery model to improve children’s wellness and longevity, involving the delivery of lifesaving, curative interventions to address common childhood illnesses, particularly where there are limited facility-based services. This paper reports the findings of a qualitative study that investigated the implementation of CCM in the Kutai Timur district, East Kalimantan Indonesia from the perspective of mothers who received care. Methods Seven mothers and health workers were observed during a consultation and these mothers were interviewed in their home weeks after delivery. Field notes and the interview transcriptions were analysed thematically. Findings Mothers reported that their access to care had improved, along with an increase in their knowledge of infant danger signs and when to seek care. Family compliance with care plans was also found to have improved. Mothers expressed satisfaction with the care provided under the CCM model. The mothers expressed a need for a nurse or midwife to be posted in each village, preferably someone from that village. However two mothers did not wish their children to receive health interventions as they did not believe these to be culturally appropriate. Conclusion CCM is seen by rural Indonesian mothers to be a helpful model of care in terms of increasing access to health care and the uptake of lifesaving interventions for sick children. However there is a need to modify the program to demonstrate cultural sensitivity and meet cultural needs of the target population. While CCM is a potentially effective model of care, further integrative strategies are required to embed this model into maternal and child health service delivery

    Ultrahigh Purcell factors and Lamb shifts using slow-light metamaterial waveguides

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    Employing a medium-dependent quantum optics formalism and a Green function solution of Maxwell's equations, we study the enhanced spontaneous emission factors (Purcell factors) and Lamb shifts from a quantum dot or atom near the surface of a %embedded in a slow-light metamaterial waveguide. Purcell factors of approximately 250 and 100 are found at optical frequencies for pp-polarized and ss-polarized dipoles respectively placed 28\thinspace nm (0.02\thinspace λ0\lambda_{0}) above the slab surface, including a realistic metamaterial loss factor of γ/2π=2THz\gamma /2\pi =2 \mathrm{THz}. For smaller loss values, we demonstrate that the slow-light regime of odd metamaterial waveguide propagation modes can be observed and related to distinct resonances in the Purcell factors. Correspondingly, we predict unusually large and rich Lamb shifts of approximately -1 GHz to -6 GHz for a dipole moment of 50 Debye. We also make a direct calculation of the far field emission spectrum, which contains direct measurable access to these enhanced Purcell factors and Lamb shifts

    Environmental Health Program Performance and its Relationship with Environment-Related Disease in Florida

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    This study used a unique approach to examine Florida county health department environmental health (EH) program performance of the 10 Essential Environmental Public Health Services (EEPHS) and its relationship with environment- related disease, described by enteric disease rates. Correlation analysis tested the association between performance of each EEPHS and five different enteric disease rates, while multivariate regression analysis further examined the relationships while considering program organizational characteristics as potential confounders. Correlation analysesrevealed cryptosporidiosis was associated with EEPHS 2 diagnose (Τb = .195, p = .027) and EEPHS 8 workforce (Τb= .234, p = .006), and salmonellosis with EEPHS 4 mobilize (Τb = .179, p = .042) and EEPHS 6 enforce (Τb = .201, p = .020). Multivariate regression results showed EEPHS 2 diagnose (p = .04) and EEPHS 4 mobilize (p = .00) had statistically significant associations with cryptosporidiosis and salmonellosis, respectively, and suggested that improved performance of these two EEPHS may have decreased disease incidence. EH programs may benefit from improving the performance of EEPHS to address the incidence of certain enteric diseases. Continued efforts to develop a robust understanding of EH program performance and its impact on environment-related disease could enhance EH services delivery and ability to improve health outcomes

    Excitonic photoluminescence in symmetric coupled double quantum wells subject to an external electric field

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    The effect of an external electric field F on the excitonic photoluminescence (PL) spectra of a symmetric coupled double quantum well (DQW) is investigated both theoretically and experimentally. We show that the variational method in a two-particle electron-hole wave function approximation gives a good agreement with measurements of PL on a narrow DQW in a wide interval of F including flat-band regime. The experimental data are presented for an MBE-grown DQW consisting of two 5 nm wide GaAs wells, separated by a 4 monolayers (MLs) wide pure AlAs central barrier, and sandwiched between Ga_{0.7}Al_{0.3}As layers. The bias voltage is applied along the growth direction. Spatially direct and indirect excitonic transitions are identified, and the radius of the exciton and squeezing of the exciton in the growth direction are evaluated variationally. The excitonic binding energies, recombination energies, oscillator strengths, and relative intensities of the transitions as functions of the applied field are calculated. Our analysis demonstrates that this simple model is applicable in case of narrow DQWs not just for a qualitative description of the PL peak positions but also for the estimation of their individual shapes and intensities.Comment: 5 pages, 4 figures (accepted in Phys. Rev. B

    Extended states and dynamical localization in semiconductor superlattices

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    We study the quantum dynamics of electronic wave packets in quantum-well based semiconductor superlattices subject to an applied electric field. Using a high-accuracy numerical method, we analyze the dynamical behavior of electronic wave packets in periodic, random and random dimer superlattices. The spatial extent of electronic states is characterized by means of the time-dependent inverse participation ratio. We show that the delocalized states recently found in random dimer superlattices become spatially localized under the action of the applied field ~dynamical localization! but wavepackets are much less localized than in purely random superlattices at moderate field. We conclude that the resonant tunneling effects causing delocalization in dimer superlattices play an important role even in the presence of moderate electric field.This work has been supported by CICYT (Spain) under project MAT95-0325.Publicad

    Spontaneous DC Current Generation in a Resistively Shunted Semiconductor Superlattice Driven by a TeraHertz Field

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    We study a resistively shunted semiconductor superlattice subject to a high-frequency electric field. Using a balance equation approach that incorporates the influence of the electric circuit, we determine numerically a range of amplitude and frequency of the ac field for which a dc bias and current are generated spontaneously and show that this region is likely accessible to current experiments. Our simulations reveal that the Bloch frequency corresponding to the spontaneous dc bias is approximately an integer multiple of the ac field frequency.Comment: 8 pages, Revtex, 3 Postscript figure

    Aphasia Recovery: When, How and Who to Treat?

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    PURPOSE OF REVIEW: We now know that speech and language therapy (SALT) is effective in the rehabilitation of aphasia; however, there remains much individual variability in the response to interventions. So, what works for whom, when and how? RECENT FINDINGS: This review evaluates the current evidence for the efficacy of predominantly impairment-focused aphasia interventions with respect to optimal dose, intensity, timing and distribution or spacing of treatment. We conclude that sufficient dose of treatment is required to enable clinical gains and that e-therapies are a promising and practical way to achieve this goal. In addition, aphasia can be associated with other cognitive deficits and may lead to secondary effects such as low mood and social isolation. In order to personalise individual treatments to optimise recovery, we need to develop a greater understanding of the interactions between these factors
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