Miracle-dz/UniFAR-FTUs huggingface dataset:
History effects and near equilibrium in adverse-pressure-gradient turbulent boundary layers

Turbulent boundary layers under adverse pressure gradients are studied using well-resolved large-eddy simulations (LES) with the goal of assessing the influence of the streamwise pressure-gradient development. Near-equilibrium boundary layers were characterized through the Clauser pressure-gradient parameter $\unicode[STIX]{x1D6FD}$ . In order to fulfil the near-equilibrium conditions, the free stream velocity was prescribed such that it followed a power-law distribution. The turbulence statistics pertaining to cases with a constant value of $\unicode[STIX]{x1D6FD}$ (extending up to approximately 40 boundary-layer thicknesses) were compared with cases with non-constant $\unicode[STIX]{x1D6FD}$ distributions at matched values of $\unicode[STIX]{x1D6FD}$ and friction Reynolds number $Re_{\unicode[STIX]{x1D70F}}$ . An additional case at matched Reynolds number based on displacement thickness $Re_{\unicode[STIX]{x1D6FF}^{\ast }}$ was also considered. It was noticed that non-constant $\unicode[STIX]{x1D6FD}$ cases appear to approach the conditions of equivalent constant $\unicode[STIX]{x1D6FD}$ cases after long streamwise distances (approximately 7 boundary-layer thicknesses). The relevance of the constant $\unicode[STIX]{x1D6FD}$ cases lies in the fact that they define a ‘canonical’ state of the boundary layer, uniquely characterized by $\unicode[STIX]{x1D6FD}$ and $Re$ . The investigations on the flat plate were extended to the flow around a wing section overlapping in terms of $\unicode[STIX]{x1D6FD}$ and $Re$ . Comparisons with the flat-plate cases at matched values of $\unicode[STIX]{x1D6FD}$ and $Re$ revealed that the different development history of the turbulent boundary layer on the wing section leads to a less pronounced wake in the mean velocity as well as a weaker second peak in the Reynolds stresses. This is due to the weaker accumulated effect of the $\unicode[STIX]{x1D6FD}$ history. Furthermore, a scaling law suggested by Kitsios et al. (Intl J. Heat Fluid Flow, vol. 61, 2016, pp. 129–136), proposing the edge velocity and the displacement thickness as scaling parameters, was tested on two constant-pressure-gradient parameter cases. The mean velocity and Reynolds-stress profiles were found to be dependent on the downstream development. The present work is the first step towards assessing history effects in adverse-pressure-gradient turbulent boundary layers and highlights the fact that the values of the Clauser pressure-gradient parameter and the Reynolds number are not sufficient to characterize the state of the boundary layer.
NBER WORKING PAPER SERIES THE CHANGING ROLE OF FAMILY INCOME AND ABILITY IN DETERMINING EDUCATIONAL ACHIEVEMENT

This paper uses data from the 1979 and 1997 National Longitudinal Survey of Youth cohorts (NLSY79 and NLSY97) to estimate changes in the effects of ability and family income on educational attainment for youth in their late teens during the early 1980s and early 2000s. Cognitive ability plays an important role in determining educational outcomes for both NLSY cohorts, while family income plays little role in determining high school completion in either cohort. Most interestingly, we document a dramatic increase in the effects of family income on college attendance (particularly among the least able) from the NLSY79 to the NLSY97. Family income has also become a much more important determinant of college 'quality' and hours/weeks worked during the academic year (the latter among the most able) in the NLSY97. Family income has little effect on college delay in either sample. To interpret our empirical findings on college attendance, we develop an educational choice model that incorporates both borrowing constraints and a 'consumption' value of schooling two of the most commonly invoked explanations for a positive family income schooling relationship. Without borrowing constraints, the model cannot explain the rising effects of family income on college attendance in response to the sharply rising costs and returns to college experienced from the early 1980s to early 2000s: the incentives created by a 'consumption' value of schooling imply that income should have become less important over time (or even negatively related to attendance). Instead, the data are more broadly consistent with the hypothesis that more youth are borrowing constrained today than were in the early 1980s. Philippe Belley Department of Economics University of Western Ontario London, ON N6A 5C2 Canada pbelley@uwo.ca Lance Lochner Department of Economics, Faculty of Social Science University of Western Ontario 1151 Richmond Street, North London, ON N6A 5C2 Canada and NBER llochner@uwo.ca The Changing Role of Family Income and Ability in Determining Educational Achievement∗ Philippe Belley University of Western Ontario Lance Lochner University of Western Ontario NBER
European Journal of Human Resource Management Studies

The dynamic technological changes worldwide have changed the way of life for individuals and communities during the recent decades. The most crucial changes that in the work environment and opportunities for pursuing careers, in particularly for women. The current research paper focuses on one aspect of key findings of a doctoral study aimed at identifying and investigating the obstacles of the employment of women in Saudi Arabia labor market in the digital technology era. The research followed the qualitative approach to collect the data needed through conducting interviews with a round 40 participants including three stakeholders (Government, Academia, and businesses). Five main obstacles have been identified and are discussed. They are sociocultural factors such the dominate role of men, and lack of family support. In addition to that, insufficient experiences and training in digital technology, and finally childcare system in KSA. Further efforts are needed to raise the society awareness towards the role of women as human capital to participate in the nation's development, and efforts are needed by different stakeholders to empower, support and enable women to engage in labour market effectively.
European Journal of Human Resource Management Studies

It is important for organisations like schools to pay attention to the wellbeing and efficacy of their employees. This study investigated the relationship between self-efficacy and job commitment of secondary school Guidance Counsellors in Anambra State, Nigeria. Three research questions guided the study while one null hypothesis was tested at 0.05 level of significance. Correlational research design was adopted by the researcher. A total of 221 secondary school Guidance Counsellors made up the population of the study. The whole population of the 221 Guidance Counsellors were included in the study, hence no sampling was done. Two research instruments namely, General Self-Efficacy Scale (GSS) and Job Commitment Questionnaire (JCQ), were used for data collection. The reliability coefficient value the instruments are as follows; r = 0.87 for GSS and 0.70 for JCQ. Copies of the instruments were distributed through direct delivery approach. Summated scores and percentages were used for answering the research questions 1-2, Pearson Product Moment Correlation Coefficient was used to answer research question 3 while t-test of significance of relationship was used in testing of the hypotheses. The findings of the study showed among others, that there is a significant low positive relationship between the Self-efficacy of Guidance Counsellors in Anambra State and their job commitment. From the findings of the study, the researcher made some recommendations which include improving the working environment of the school Guidance Counsellors and organising seminars and workshops to improve their Self-efficacy in order for them to remain committed to their job.
Delayed post-ischaemic administration of xenon reduces brain damage in a rat model of global ischaemia

Abstract Objective: Xenon and nitrous oxide have been shown to be neuroprotective in vivo and in vitro, but mainly in models of focal cerebral ischaemia. This study aimed to investigate whether the two gases are able to attenuate cerebral injury after global cerebral ischaemia. Methods: Adult male Wistar rats underwent bilateral common carotid artery occlusion and were ventilated for 1 hour with 21% O2/78% N2. They were then randomized to three groups which continued to receive atmospheric air, 50% N2O/50% O2 and 50% Xe/50% O2 for an additional period of 45 minutes. The number of ischaemic neurons, the cortical volume loss and the immunochemical and molecular expression of c-fos and MMP-9 were evaluated. Results: Xenon reduced the number of ischaemic neurons in the cortex and CA1 hippocampal region (p < 0.001) and decreased the cortical volume loss (p < 0.01). Immunochemical induction of c-fos in the cortex was significantly suppressed (p < 0.01) after administration of xenon. The molecular analysis revealed significant effects of N2O and xenon administration on c-fos and MMP-9 expression. Conclusions: The data indicate that N2O and xenon administration is neuroprotective 1 hour after bilateral common carotid artery occlusion. These findings provide valuable evidence on the beneficial role of N2O and xenon in global cerebral injury.
The Role of Career Development for Veterans with Psychiatric Disabilities: A Review of Literature

The number of military veterans with psychiatric disabilities continues to increase. To best serve veterans with these conditions, rehabilitation professionals must be aware of current best practices. Psychiatric disabilities may not be visible but these conditions impact veteran’s and must be taken into consideration when making career decisions. To aid professionals with increasing knowledge of the literature, a total of five articles were reviewed and major findings were summarized. Implications for rehabilitation professionals and suggestions for future practice directions are provided. This project highlights the importance of staying current in the literature regarding veterans with psychiatric disabilities.
Large-signal field analysis of a linear beam travelling wave tube amplifier for the anisotropically conducting tape helix slow-wave structure supported by dielectric rods

Abstract The large-signal behavior of traveling wave tube amplifier for a linear beam dielectric loaded anisotropically conducting tape helix slow wave structure (SWS) is realized through a swift and reliable field analysis. Using Green’s function sequence, the field components in the SWS are designated as nonlinear functionals of electron arrival time. The electron arrival time in the beam region is formulated into a nonlinear operator in the Banach space mapping form by substituting the axial electric field component into the electron ballistic equation. The nonlinear beam–wave interaction is then obtained by determining the electron arrival time through extensive successive approximations, and thus exact electric and magnetic field components in the tape helix SWS are attained. The numerical computation of the proposed model yields definitive analytical results for the electron exit velocity, induced surface current density, power gain, conversion efficiency, and optimum interaction length.
Neuralgic amyotrophy: An update on diagnosis, pathophysiology, and treatment

In this review we provide a current overview of the clinical features, pathophysiology, epidemiology, and diagnostic and therapeutic strategies in neuralgic amyotrophy (NA). The disorder has several phenotypic variations, with a classic form in 70% of the patients. It is not rare, with an incidence of 1 per 1,000 individuals, but it is still often missed. Recurrences are common, yet the proposed multifactorial etiology, which includes genetic, biomechanical, and immunologic factors, limits our capacity to predict or prevent them. NA is a clinical diagnosis, and ancillary studies serve to exclude infectious or malignant causes or to assess a differential diagnosis. If patients are seen early and are still in pain, a short trial of high‐dose oral corticosteroids is advised, and adequate analgesia may require opioids and non‐steroidal anti‐inflammatory drugs. Persistent complaints are common, and a multidisciplinary rehabilitation approach focusing on scapular coordination, energy distribution strategies, and self‐management is indicated. Muscle Nerve 53: 337–350, 2016
Modelling and Analysis of Quantum Key Distribution Protocols , BB 84 and B 92 , in Communicating Quantum Processes ( CQP ) language and Analysing in PRISM

Proof of security of cryptography protocols theoretically establishes the strength of a protocol and the constraints under which it can perform, it does not take into account the overall design of the protocol. In the past model checking has been successfully applied to classical cryptography protocols to weed out design flaws which would have otherwise gone unnoticed. Quantum key distribution protocols differ from their classical counterparts, in their ability to detect the presence of an eavesdropper while exchanging the key. Although unconditional security has been proven for both BB84 [3] and B92 [4] key distribution protocols, in this paper we show that identifying an eavesdropper’s presence is constrained on the number of qubits exchanged. We first model the protocols in Communicating Quantum Processes (CQP) [10] [8] and then explain the mechanism by which we have translated this into a PRISM model and how we analysed the protocols’ capabilities. We mainly focus on the protocols’ ability to detect an active eavesdropper and the extent to which an eavesdropper can retrieve the shared key without being detected by either party. We then conclude by comparing the performance of the protocols.
Preformulation Studies of Zidovudine Derivatives: Acid Dissociation Constants, Differential Scanning Calorimetry, Thermogravimetry, X-Ray Powder Diffractometry and Aqueous Stability Studies

As part as of the preformulation studies of new 5′-OH derivatives of zidovudine, compounds 2–6, their acid dissociation constants, Differential Scanning Calorimetry (DSC) and Thermogravimetry (TG) curves, X-Ray Powder diffractograms and aqueous stability are reported. A sensitive technique such as differential scanning potentiometry was used to determine the pKa constants of the above mentioned compounds. In addition, pKa values were calculated from theoretical methods, and no significant differences with those of experimental ones were observed. X-Ray Powder Diffractometry data demonstrated that compounds 2–4 were crystalline while 5 and 6 were amorphous. DSC analysis indicated that all of them presented an exothermic decomposition peak above 150 °C which is accompanied by a weight loss in the respective TG curves. The stability of these compounds in aqueous medium at different pH values was investigated, using a validated High Performance Liquid Chromatography (HPLC) method, which demonstrated to be rapid, selective, sensitive, accurate and stability-indicating. Good recovery, linearity and precision were also achieved. For all compounds the aqueous hydrolysis followed a pseudo-first-order kinetics, depending on pH and the union existing between AZT and the associate moiety. The hydrolysis was catalyzed by hydroxide ion in the 7.4–13.2 pH range, while all compounds exhibited pH-independent stability from acidic to neutral media (pHs 1.0–7.4).
Explaining the isotope effect on heat transport in L-mode with the collisional electron-ion energy exchange

In ASDEX Upgrade (AUG), the normalised gyroradius ρ⋆ was varied via a hydrogen isotope scan while keeping other dimensionless parameters constant. This was done in L-mode, to minimise the impact of pedestal stability on confinement. Power balance and perturbative transport analyses reveal that the electron heat transport is unaffected by the differences in isotope mass. Nonlinear simulations with the Gene code suggest that these L-mode discharges are ion temperature gradient (ITG) dominated. The different gyroradii due to the isotope mass do not necessarily result in a change of the predicted heat fluxes. This result is used in simulations with the Astra transport code to match the experimental profiles. In these simulations the experimental profiles and confinement times are reproduced with the same transport coefficients for hydrogen and deuterium plasmas. The mass only enters in the energy exchange term between electrons and ions. These numerical observations are supported by additional experiments which show a lower ion energy confinement compared to that of the electrons. Additionally, hydrogen and deuterium plasmas have a similar confinement when the energy exchange time between electrons and ions is matched. This strongly suggests that the observed isotope dependence in L-mode is not dominated by a gyroradius effect, but a consequence of the mass dependence in the collisional energy exchange between electrons and ions.
Social work's colonial past with Indigenous children and communities in Australia and Canada: A cross‐national comparison

This article offers a cross‐national comparison of social work in two countries, Australia and Canada, about the care of Indigenous children within the context of colonization and the evolving profession. The discussion is based on data from two empirical studies that examined professional discourse relating to the removal of Indigenous children from their families and Indigenous peoples more broadly within key historical time frames. The studies involved a content analysis of the flagship journals of the Australian and Canadian professional associations. It is argued that a critical interrogation of professional discourse within these historical and national particularities provides insights that can inform a broader understanding of how practices and constructions of social work are shaped within contemporary practice contexts. The studies revealed that very little attention was paid to problematizing colonial policies and practices, including the state‐sanctioned forcible removal of countless Indigenous children from their biological families, while the professions in both countries were complicit in the oppressive treatment of Indigenous peoples that have left a legacy of intergenerational trauma. The findings suggest a way of understanding social work as a discipline beyond the historical specificities of the two countries that has relevance to social work across the globe.
Characterizing the time course of decision-making in change detection.

We propose a novel modeling framework for characterizing the time course of change detection based on information held in visual short-term memory (VSTM). Specifically, we seek to answer whether change detection is better captured by a first-order integration model, in which information is pooled from each location, or a second-order integration model, in which each location is processed independently. We diagnose whether change detection across locations proceeds in serial or parallel and how processing is affected by the stopping rule (i.e., detecting any change vs. detecting all changes; Experiment 1) and how the efficiency of detection is affected by the number of changes in the display (Experiment 2). We find that although capacity is generally limited in both tasks, the architecture varies from parallel self-terminating in the OR task to serial self-terminating in the AND task. Our novel framework allows model comparisons across a large set of models ruling out several competing explanations of change detection. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
Effect of Itraconazole on the Pharmacokinetics of Imidafenacin in Healthy Subjects

The effect of itraconazole, a potent inhibitor of the CYP3A isoenzyme family, on the pharmacokinetics of imidafenacin, a novel synthetic muscarinic receptor antagonist, was investigated. Twelve healthy subjects participated in this open–label, self‐controlled study. In period I, subjects received a single oral dose of 0.1 mg imidafenacin. In period II, they received multiple oral doses of 200 mg itraconazole for 9 days and a single oral dose of 0.1 mg imidafenacin on day 8. Plasma concentrations of imidafenacin and M‐2, the major metabolite of imidafenacin metabolized by CYP3A4, were determined. Analytes were measured by liquid chromatography tandem mass spectrometry. Following coadministration with itraconazole, the maximum plasma concentration (Cmax) of imidafenacin increased 1.32‐fold (90% confidence intervals [CIs]: 1.12–1.56), and the area under the plasma concentration‐time curve from time 0 to infinity (AUC0‐∞) increased 1.78‐fold (90% CI: 1.47–2.16). In conclusion, itraconazole increases the plasma concentrations of imidafenacin by inhibiting CYP3A4. Therefore, itraconazole or potent CYP3A4 inhibitors should be carefully added to imidafenacin drug regimens.
Effect of Number of Measurement Points on Accuracy of Muscle T2 Calculations

Purpose: The purpose of this study was to investigate the effect of the number of measurement points on the calculation of transverse relaxation time (T2) with a focus on muscle T2. Materials and Methods: This study assumed that muscle T2 was comprised of a single component. Two phantom types were measured, 1 each for long (“phantom”) and short T2 (“polyvinyl alcohol gel”). Right calf muscle T2 measurements were conducted in 9 healthy male volunteers using multiple-spin-echo magnetic resonance imaging. For phantoms and muscle (medial gastrocnemius), 5 regions of interests were selected. All region of interest values were expressed as the mean ± standard deviation. The T2 effective signal-ratio characteristics were used as an index to evaluate the magnetic resonance image quality for the calculation of T2 from T2-weighted images. The T2 accuracy was evaluated to determine the T2 reproducibility and the goodness-of-fit from the probability Q. Results: For the phantom and polyvinyl alcohol gel, the standard deviation of the magnetic resonance image signal at each echo time was narrow and mono-exponential, which caused large variations in the muscle T2 decay curves. The T2 effective signal-ratio change varied with T2, with the greatest decreases apparent for a short T2. There were no significant differences in T2 reproducibility when > 3 measurement points were used. There were no significant differences in goodness-of-fit when > 6 measurement points were used. Although the measurement point evaluations were stable when > 3 measurement points were used, calculation of T2 using 4 measurement points had the highest accuracy according to the goodness-of-fit. Even if the number of measurement points was increased, there was little improvement in the probability Q. Conclusion: Four measurement points gave excellent reproducibility and goodness-of-fit when muscle T2 was considered mono-exponential.
A Simple and Robust Estimator for Linear Regression Models with Strictly Exogenous Instruments

In this paper, I investigate the estimation of linear regression models with strictly exogenous instruments under minimal identifying assumptions. I introduce a uniformly (in the data‐generating process) consistent estimator under nearly minimal identifying assumptions. The proposed estimator, called the integrated instrumental variables (IIV) estimator, is a simple weighted least‐squares estimator. It does not require the choice of a bandwidth or tuning parameter, or the selection of a finite set of instruments. Thus, the estimator is extremely simple to implement. Monte Carlo evidence supports the theoretical claims and suggests that the IIV estimator is a robust complement to optimal instrumental variables in finite samples. In an application with quarterly UK data, the IIV estimator estimates a positive and significant elasticity of intertemporal substitution and an equally sensible estimate for its reciprocal, in sharp contrast to instrumental variables methods that fail to identify these parameters.