841 research outputs found

    Why Sensations Must be Neurological Properties: A Defense of the Identity Theory

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    In this dissertation, I defend the thesis that qualitative mental states known as qualia (e.g., tastes, feelings, pains) are identical to physical properties. In Chapter 1, I argue that qualia have a functional role in the world, and that is to facilitate non-automatic mental processes. In Chapter 2, I demonstrate how non-reductive accounts of the mind fail. In Chapter 3, I demonstrate how my reductive account fares better than similar accounts with respect to common and contemporary objections. In Chapter 4, I address arguments against any view like mine which seeks to understand qualia in a physicalistic framework

    An investigation into the robustness of willingness to pay for non-market goods in relation to subjective well-being

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    This thesis investigates the sensitivity of derived monetary valuations of the well-being effects of non-market goods, by considering, in turn, the four components that contribute to these calculations. Comparisons are made to the current subjective well-being (SWB) literature by altering one component at a time in a willingness to pay (WTP) function, in addition to varying the estimator used when calculating WTP. The first component varied is the measure of income used; a more robust, up-to-date measure is proposed that takes into account household size, economies of scale and composition, plus other improvements over current income scaling approaches including equivalence scales. Secondly, anticipation and adaptation effects are examined, in order to allow for the dynamics of SWB in WTP valuations. Thirdly, due to the ordered nature of the dependent variable, the effects of both cardinal and ordinal models on WTP derivations are investigated. Such models include the ordered logit fixed effects (FE) model (see for example Das and Van Soest (1999), Ferrer-i-Carbonell and Frijters (2004) and Baetschmann et al. (2011)). The final input to be varied is whether income endogeneity is accounted for. A control function approach is used in this case. A key finding is that all four inputs in the WTP calculation contribute significantly to the estimated WTP values. However, the degree to which each input influences the variation in WTP values differs substantially. The three main contributing factors to WTP variations are the income variable chosen, anticipation and adaptation effects, and controlling for endogeneity. Additionally, this thesis proposes a new way to define WTP that is also valid for ordered estimators. Whilst the standard WTP approach relies simply on coefficient ratios at a point in time, the method proposed here uses the finding that statistically significant anticipation and adaptation effects, along with adaptation to all non-market events (except for unemployment) suggest that there are concerns with taking WTP values as yearly valuations that assume constant effects on SWB. By instead defining WTP as the summation of the value of all WTP effects over all lag and lead effect periods, the total value of an event can be calculated. This definition presents further weaknesses of the original method by showing that because of significant lag and lead effects for events such as divorce and widowhood, these events have substantially larger WTP values than first thought. This leads to the major finding in this study that rank orders are not preserved when controlling for income endogeneity, even when comparing two model specifications that are identical in all other respects. Therefore, despite absolute WTP valuations appearing more similar for linear and ordered estimators when a more appropriate model specification is in place, the rank orders are affected. This finding argues against papers such as Powdthavee and van den Berg (2011) that find that rank orders are preserved for WTP valuations when modelling SWB. In conclusion, given rank orders are generally not preserved when a small change is made in the model specification, the validity of the WTP method is significantly reduced. Finally, the above methodology is applied to education, with the main contribution to the education literature being that the positive effects on SWB from education only exist in terms of lead effects

    The Validation of a Structured Situational Interview for Registered and Licensed Practical Nurses

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    The profession of nursing is experiencing a shortage of qualified nursing professionals. Hospitals understaffed with nurses are likely to experience several negative consequences including low quality care, which places the health and safety of patients at risk. In order to ensure an effective selection process for hospital nurses, a structured situational interview, developed using a content validation approach, was validated using a criterion-related approach. Interviews that have a high degree of structure consistently demonstrate higher predictive validities with job performance than do interviews with less structure. The structured situational interview in this study had a high degree of structure and was developed after a job analysis was completed. Interviewee responses were evaluated using a behavioral summation scale. The results of the current study confirmed the hypothesis that there would be a positive relationship between nursing student interview scores and Grade Point Average, thus indicating that the structured interview should be useful in the selection of professionals in the field of nursing. However, the observed validity coefficient (r = .29) was lower than expected based on a review of previous research on the criterion-related validity of structured situational interviews. It is recommended that future research with this instrument use a larger sample of nurse incumbents as participants and nurse managers as interviewers. Additional interview items, developed following a content validity approach, would likely increase the reliability and the validity of the intervie

    Seizing the Moment: Realizing the Promise of Student-Centered Learning

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    This brief outlines policy recommendations for supporting student-centered learning at the local, state, and federal level

    The Effects of Pregnenolone 16α-Carbonitrile Dosing on Digoxin Pharmacokinetics and Intestinal Absorption in the Rat

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    The effect of Pgp induction in rats by pregnenolone 16α-carbonitrile (PCN) (3 days, 35 mg/kg/d, p.o.) on digoxin pharmacokinetics and intestinal transport has been assessed. After intravenous or oral digoxin dosing the arterial and hepatic portal vein (oral) AUC(0-24h) were significantly reduced by PCN pre-treatment. Biliary digoxin clearance increased 2-fold following PCN treatment. PCN significantly increased net digoxin secretion (2.05- and 4.5-fold respectively) in ileum and colon but not in duodenum or jejunum. This increased secretion correlated with increased Pgp protein expression in ileum and colon. Both intestinal and biliary excretion therefore contribute to altered digoxin disposition following PCN

    Building Interprofessional Global Health Infrastructure at a University and Health System: Navigating Challenges and Scaling Successes

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    Mission: Global Jefferson will create sustainable programs of global distinction through collaboration that position Jefferson as a local and international destination and resource for education, research, and clinical activities. Global Jefferson is supported by the Associate Provost for Global Affairs, part of the Office of the Provost. Global activity at Jefferson includes: Global Health Initiatives Committee (GHIC) Service Learning Global Research & Exchange between institutions Pre-clinical, translational, clinical, and applied research Poster presented at: 8th Annual Global Health Conference of the Consortium of Universities for Global Health (CUGH)https://jdc.jefferson.edu/globalhealthposters/1000/thumbnail.jp

    Estimating the population impact of screening strategies for identifying and treating people at high risk of cardiovascular disease: modelling study

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    Objective To estimate the potential population impact of different screening strategies for identifying and treating people at high risk of cardiovascular disease, including strategies using routine data for cardiovascular risk stratification, in light of the UK government’s recommended national strategy to screen all adults aged 40-74 for cardiovascular risk

    Atomistic Picture of Opening–Closing Dynamics of DNA Holliday Junction Obtained by Molecular Simulations

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    Holliday junction (HJ) is a noncanonical four-way DNA structure with a prominent role in DNA repair, recombination, and DNA nanotechnology. By rearranging its four arms, HJ can adopt either closed or open state. With enzymes typically recognizing only a single state, acquiring detailed knowledge of the rearrangement process is an important step toward fully understanding the biological function of HJs. Here, we carried out standard all-atom molecular dynamics (MD) simulations of the spontaneous opening-closing transitions, which revealed complex conformational transitions of HJs with an involvement of previously unconsidered “half-closed” intermediates. Detailed free-energy landscapes of the transitions were obtained by sophisticated enhanced sampling simulations. Because the force field overstabilizes the closed conformation of HJs, we developed a system-specific modification which for the first time allows the observation of spontaneous opening-closing HJ transitions in unbiased MD simulations and opens the possibilities for more accurate HJ computational studies of biological processes and nanomaterials
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