Miracle-dz/UniFAR-FTUs huggingface dataset:
Link between transformational leadership and teachers organizational commitment in Addis Ababa government secondary schools

Abstract This study has explored the link between school principals’ transformational leadership style to teachers’ organizational commitment in Addis Ababa government secondary schools employing correlational research design. Stratified random sampling technique was applied to draw a representative sample of 385 teachers for the study. The result of this study shows that transformational leadership is less practiced in Addis Ababa government secondary schools. The study further reveals that transformational leadership is positively and significantly related to teachers’ organizational commitment. Hence, improving the exercise of transformational leadership in schools may heighten the teachers’ organizational commitment. Further research is required with more sample of the study including school principals, students and parent teacher association to examine the link in more detail in Ethiopian context.
Queueing in space

We consider a problem in which a single server must serve a stream of customers whose arrivals are distributed over a finite-size convex space. Under the assumption that the server has full information on the customer location, obvious service policies are the FCFS and the greedy (serve-the-closest-customer) approaches. These algorithms are, however, either inefficient (FCFS) or ‘unfair' (greedy). We propose and study two alternative algorithms, the gated-greedy policy and the gated-scan policy, which are more ‘fair' than the pure greedy method. We show that the stability conditions of the gated-greedy are p < 1 (where p is the expected rate at which work arrives at the system), implying that the method is at least as efficient (in terms of system stability) as any other discipline, in particular the greedy one. For the gated-scan policy we show that for any p < 1 one can design a stable gated-scan policy; however, for any fixed gated-scan policy there exists p < 1 for which the policy is unstable. We evaluate the performance of the gated-scan policy, and present bounds for the performance of the gated-greedy policy. These results are derived for systems in which the arrivals occur on a two-dimensional space (a square) but they are not limited to this configuration; rather they hold for more complex N-dimensional spaces, in particular for serving customers in (three-dimensional) convex space and serving customers on a line.
Direct and Adjoint Sensitivity Analysis of Ordinary Differential Equation Multibody Formulations

Sensitivity analysis of multibody systems is essential for several applications, such as dynamics-based design optimization. Dynamic sensitivities, when needed, are often calculated by means of finite differences. This procedure is computationally expensive when the number of parameters is large, and numerical errors can severely limit its accuracy. This paper explores several analytical approaches to perform sensitivity analysis of multibody systems. Direct and adjoint sensitivity equations are developed in the context of Maggi's formulation of multibody dynamics equations. The approach can be generalized to other formulations of multibody dynamics as systems of ordinary differential equations (ODEs). The sensitivity equations are validated numerically against the third party code fatode and against finite difference solutions with real and complex perturbations.
DELTA50: A Highly Accurate Database of Experimental 1H and 13C NMR Chemical Shifts Applied to DFT Benchmarking

Density functional theory (DFT) benchmark studies of 1H and 13C NMR chemical shifts often yield differing conclusions, likely due to non-optimal test molecules and non-standardized data acquisition. To address this issue, we carefully selected and measured 1H and 13C NMR chemical shifts for 50 structurally diverse small organic molecules containing atoms from only the first two rows of the periodic table. Our NMR dataset, DELTA50, was used to calculate linear scaling factors and to evaluate the accuracy of 73 density functionals, 40 basis sets, 3 solvent models, and 3 gauge-referencing schemes. The best performing DFT methodologies for 1H and 13C NMR chemical shift predictions were WP04/6-311++G(2d,p) and ωB97X-D/def2-SVP, respectively, when combined with the polarizable continuum solvent model (PCM) and gauge-independent atomic orbital (GIAO) method. Geometries should be optimized at the B3LYP-D3/6-311G(d,p) level including the PCM solvent model for the best accuracy. Predictions of 20 organic compounds and natural products from a separate probe set had root-mean-square deviations (RMSD) of 0.07 to 0.19 for 1H and 0.5 to 2.9 for 13C. Maximum deviations were less than 0.5 and 6.5 ppm for 1H and 13C, respectively.
Whole-cell heater for the diamond anvil cell

An external heating assemblage allowing diamond anvil cell (DAC) experiments at megabar pressures and temperatures above 1200 K was constructed. The complete high-pressure high-temperature system consists of an anvil assembly made from a special high-temperature alloy, a mechanical loading mechanism, and external resistive heaters placed around the cell. The new system allows fine adjustment of the pressure (within 1 GPa) over the whole temperature range. It maintains constant pressure (within 1 GPa at megabar pressures) and constant temperature (within 5 K at 1000 K) for several hours. Temperature is measured with an external thermocouple. The pressure chamber does not have a measurable temperature gradient. The new heating assemblage is easily coupled with a experimental setup at synchrotron radiation facilities and Raman spectrometers. We tested the performance of the new system by measuring the thermal expansion of Fe0.90Ni0. 05 at different pressures and by studying phase transformations in TiO2 and t.
Outcomes of programmed death protein-1 inhibitors treatment of chronic active Epstein Barr virus infection: A single center retrospective analysis

Introduction Chronic active Epstein-Barr virus (CAEBV) disease is a high-mortality disease, which is characterized by persistent infectious mononucleosis-like symptoms. There is no standard treatment for CAEBV and allogeneic hematopoietic stem cell transplantation (HSCT) was considered the only potentially therapeutic approach. PD-1 inhibitors have achieved high response in many Epstein-Barr virus-related diseases. In this single-center retrospective analysis, we report the outcomes of PD-1 inhibitors treatment of CAEBV. Methods All CAEBV patients without hemophagocytic lymphohistiocytosis (HLH), who were treated with PD-1 inhibitors in our center between 6/1/2017 and 12/31/2021, were retrospectively analyzed. The efficacy and safety of the PD-1 inhibitors were evaluated. Results Among the sixteen patients with a median age at onset of 33 years (range, 11-67 years), twelve patients responded to PD-1 inhibitors and the median progression-free survival (PFS) was 11.1 months (range, 4.9-54.8 months). Three achieved clinical complete response (clinical CR), as well as molecular CR. Five patients achieved and remained partial response (PR), and four converted from PR to no response (NR). For three CR patients, the median time and cycles from the first application of PD-1 inhibitor to clinical CR were 6 weeks (range, 4-10 weeks) and 3 cycles (range, 2-4 cycles), and molecular CR was achieved after a median of 16.7 weeks (range, 6.1-18.4 weeks) and 5 cycles (range, 3-6 cycles) of PD-1 inhibitor infusion. No immune-related adverse events have been observed except for one patient who suffered immune-related pancreatitis. There was no correlation of treatment outcome with blood count, liver function, LDH, cytokine or ferritin levels. NK cell function, PD-L1 expression in tumor tissue and gene mutation possibly correlated with treatment response. Discussion In patients with CAEBV, PD-1 inhibitors have tolerable toxicity and comparable outcomes while improving quality of life and financial toxicity. Larger prospective studies and longer follow-up time is needed to be conducted.
Radiative cooling near the top of a cloudy mixed layer

The role of radiation above a cloudy mixed layer is examined. We find that whereas turbulent entrainment can be identified with a very sharp temperature jump at the cloud top, the effect of radiative flux divergence above the cloud leads to a much more gradual temperature increase. With adequate observations the two can easily be distinguished. The development of the boundary layer can be described in terms of equations in which above-cloud radiation plays no role.
Claiming Voice and Visibility for International East-Asian Kinesiology Students

ABSTRACT Confronting the distinctive challenges of international East Asian students is vital for the increasingly diverse United States higher education system. This study examines the experiences of six participants of East Asian descent during kinesiology doctoral programs at U.S. higher education institutions. The research design is qualitative inquiry rooted in Asian Critical Race Theory (AsianCrit). There were several subthemes emerged; (a) language barriers and/or proficiency, (b) cross-cultural dissonance, (c) multi-faceted challenges, (d) limited social relationships, and (e) extension of Asian identity as faculty. Findings are discussed in light of AsianCrit with a particular focus on marginalization—invisible presence and silenced voices, intersectionality—perpetual foreigners and unwelcome outsiders, lack of social and cultural capital, and counter stories. Frequently positioned as outsiders with minimal voice and visibility, their learning and success can be supported by increased institutional diversity training, culturally responsive asset -based instruction, and culturally contextual orientation.
Prediction of ground reaction forces and moments during walking in children with cerebral palsy

Introduction Gait analysis is increasingly used to support clinical decision-making regarding diagnosis and treatment planning for movement disorders. As a key part of gait analysis, inverse dynamics can be applied to estimate internal loading conditions during movement, which is essential for understanding pathological gait patterns. The inverse dynamics calculation uses external kinetic information, normally collected using force plates. However, collection of external ground reaction forces (GRFs) and moments (GRMs) can be challenging, especially in subjects with movement disorders. In recent years, a musculoskeletal modeling-based approach has been developed to predict external kinetics from kinematic data, but its performance has not yet been evaluated for altered locomotor patterns such as toe-walking. Therefore, the goal of this study was to investigate how well this prediction method performs for gait in children with cerebral palsy. Methods The method was applied to 25 subjects with various forms of hemiplegic spastic locomotor patterns. Predicted GRFs and GRMs, in addition to associated joint kinetics derived using inverse dynamics, were statistically compared against those based on force plate measurements. Results The results showed that the performance of the predictive method was similar for the affected and unaffected limbs, with Pearson correlation coefficients between predicted and measured GRFs of 0.71–0.96, similar to those previously reported for healthy adults, despite the motor pathology and the inclusion of toes-walkers within our cohort. However, errors were amplified when calculating the resulting joint moments to an extent that could influence clinical interpretation. Conclusion To conclude, the musculoskeletal modeling-based approach for estimating external kinetics is promising for pathological gait, offering the possibility of estimating GRFs and GRMs without the need for force plate data. However, further development is needed before implementation within clinical settings becomes possible.
Dietary Supplement, Containing the Dry Extract of Curcumin, Emblica and Cassia, Counteracts Intestinal Inflammation and Enteric Dysmotility Associated with Obesity

Intestinal epithelial barrier (IEB) impairment and enteric inflammation are involved in the onset of obesity and gut-related dysmotility. Dietary supplementation with natural plant extracts represents a useful strategy for the management of body weight gain and systemic inflammation associated with obesity. Here, we evaluate the efficacy of a food supplement containing the dry extract of Curcumin, Emblica and Cassia in counteracting enteric inflammation and motor abnormalities in a mouse model of obesity, induced by a high-fat diet (HFD). Male C57BL/6 mice, fed with standard diet (SD) or HFD, were treated with a natural mixture (Curcumin, Emblica and Cassia). After 8 weeks, body weight, BMI, liver and spleen weight, along with metabolic parameters and colonic motor activity were evaluated. Additionally, plasma LBP, fecal calprotectin, colonic levels of MPO and IL-1β, as well as the expression of occludin, TLR-4, MYD88 and NF-κB were investigated. Plant-based food supplement administration (1) counteracted the increase in body weight, BMI and metabolic parameters, along with a reduction in spleen and liver weight; (2) showed strengthening effects on the IEB integrity; and (3) reduced enteric inflammation and oxidative stress, as well as ameliorated the colonic contractile dysfunctions. Natural mixture administration reduced intestinal inflammation and counteracted the intestinal motor dysfunction associated with obesity.
The Water Waves Problem: Mathematical Analysis and Asymptotics

This monograph provides a comprehensive and self-contained study on the theory of water waves equations, a research area that has been very active in recent years. The vast literature devoted to the study of water waves offers numerous asymptotic models. Which model provides the best description of waves such as tsunamis or tidal waves? How can water waves equations be transformed into simpler asymptotic models for applications in, for example, coastal oceanography? This book proposes a simple and robust framework for studying these questions. The book should be of interest to graduate students and researchers looking for an introduction to water waves equations or for simple asymptotic models to describe the propagation of waves. Researchers working on the mathematical analysis of nonlinear dispersive equations may also find inspiration in the many (and sometimes new) models derived here, as well as precise information on their physical relevance.
Instantaneous Frequency, Its Standard Deviation And Multicomponent Signals

We consider instantaneous frequency and its variance using the bilinear joint time-frequency distribu-tions. It is well known that these distributions give the instantaneous frequency as the time derivative of the phase. We show that they also lead to a reasonable definition for the standard deviation of instantaneous frequency, namely σw2(t) )= ((A'(t))/(A(t)))2 where A(t) is the amplitude of the signal. We demonstrate the relationship with the bandwidth of the spectrum. We also derive the corresponding quantities for the short-time Fourier spectrum and show the relation to and consistency with the above definition. The concept of local spread of frequencies is used to define and clarify the meaning of multicomponent signals. It is argued that the breaking up of a signal into components is a local phenomenon and that the criteria for a meaningful decomposition is that the standard deviations of instantaneous frequency of each part about their own individual instantaneous frequencies be well separated and small in comparison to the standard deviations of the signal. In addition, we consider the new distributions of Choi and Williams which dramatically enhance the interpretive value and use of bilinear distributions. These distributions suppress the interference terms while preserving the desirable characteristics of the distributions. This is particularly the case for multicomponent signals. We show that if a class of distributions yields a certain expectation value, then the cross terms of the different distributions within that class contribute the identical value towards expectation values. Hence, even though the cross terms may be reduced, they none the less contribute an identical amount towards an expectation value.
A Scoping Review of Trials Designed to Achieve Remission of Type 2 Diabetes with Lifestyle Intervention Alone: Implications for Sub-Saharan Africa

Abstract According to the International Diabetes Federation, sub-Saharan Africa is experiencing the highest anticipate increase in the prevalence of type 2 diabetes (T2D) in the world and has the highest percent of people living with T2D who are undiagnosed. Therefore, diagnosis and treatment need prioritization. However, pharmacological hypoglycemics are often unavailable and bariatric surgery is not an option. Therefore, the ability to induce T2D remission through lifestyle intervention alone (LSI-alone) needs assessment. This scoping review evaluated trials designed to induce T2D remission by LSI-alone. PubMed, Embase, Cochrane, and CINAHL databases were searched for trials designed to induce T2D remission through LSI-alone. Of the 928 identified, 63 duplicates were removed. With abstract review, 727 irrelevant articles were excluded. After full-text review, 112 inappropriate articles were removed. The remaining 26 articles described 16 trials. These trials were published between 1984 and 2021 and were conducted in 10 countries, none of which were in Africa. Remission rates varied across trials. Predictors of remission were 10% weight loss and higher BMI, lower A1C and shorter T2D duration at enrollment. However, LSI-alone regimens for newly diagnosed and established T2D were very different. In newly diagnosed T2D, LSI-alone were relatively low-cost and focused on exercise and dietary counseling with or without calorie restriction (~1500 kcal/d). Presumably due to differences in cost, LSI-alone trials in newly diagnosed T2D had higher enrollments and longer duration. For established T2D trials, the focus was on arduous phased dietary interventions; phase 1: low-calorie meal replacement (<1000 kcal/day); phase 2: food re-introduction; phase 3: weight maintenance. In short, LSI-alone can induce remission in both newly diagnosed and established T2D. To demonstrate efficacy in Africa, initial trials could focus on newly diagnosed T2D. Insight gained could provide proof of concept and a foundation in Africa on which successful studies of LSI-alone in established T2D could be built.
The Structure and Evolution of a Simulated Midlatitude Cyclone over Land

Abstract Using output from a mesoscale model simulation, this paper describes the evolution of the three-dimensional temperature and humidity structures of an intense cyclone that developed over the eastern half of the United States during 14–16 December 1987. Some specific findings include the following. • The occlusion process at the surface appeared similar to the classical paradigm, with the cold front catching up with the warm front. Aloft, a warm-type occlusion structure formed as an upper baroclinic zone merged with the surface-based occluded front. • The frontogenesis associated with the cold and warm fronts was initially continuous, but as the system evolved, a break in the frontogenesis along the northern section of the cold front developed. A single frontogenesis feature appeared to support both the warm and occluded fronts. • A quasi-linear region of convective activity was observed in advance of the surface cold front. This convective line was associated with an upper-level humidity front, wh.
On the avoidance of singularities in C-field cosmology

It is well known that a spherically symmetric imploding cold body collapses into a space-time singularity in general relativity. The singularity does not arise, however, in the modification of the theory proposed in C-field cosmology. Although the C-field has been used to represent creation of matter, the prevention of singularities does not depend on the creation property of the field, but on its negative energy density. It does not seem that singularities can be prevented except by a negative energy field. Internal pressures of the ordinary kind fail to provide support against gravitation provided the mass of the body is sufficiently large.
Breaking climate justice ‘silence’ in everyday life: The environmentalist killjoy, negotiation and relationship risk

The moral and justice dimensions of climate change are uncomfortable and commonly avoided in the conversations of day-to-day UK life. This ‘silence’ impedes the genesis of a public discourse to drive justice-oriented social and political change. Two social realms identified as silence-breaking are social movements and personal relationships, yet the potential of this intersection has yet to be explored. This article applies Goffman’s theories of interaction to a qualitative study of UK-based climate activists to show how silence around climate justice is often a means to avoid relationship conflict, and the ways in which this is negotiated within everyday interactions. Activist participants faced conversational resistance through normative avoidance of climate-related death talk, and from negative environmental activist stereotyping. In efforts to protect relationships while promoting their climate politics, participants backgrounded their activist identity, slowly ‘chipped away’ at climate obstruction through social and sustainable practices, and prioritised humour. Breaking silences required taking relationship risks through radical environmentalist ‘killjoy-talk’: a deliberate, politicised transgression of polite conversation norms. The article reflects on the normativities and loci of power discursively obstructing a moral engagement, and the potential for activists’ practical and discursive strategies to work against these to normalise politicised climate talk.
Comparative study lumbar plexus block and lumbar erector spinae plane block for postoperative pain relief after proximal femoral nail for proximal femoral fractures

Background: The clinical outcomes (time to ambulation, length of stay, and home discharge) after proximal femoral nail (PFN) for proximal femoral fractures (PFF) is dependent on successful pain management. Currently, the lumbar erector spinae plane block (LESPB) is in vogue and is associated with favorable outcomes in the postoperative period. Our study aimed to evaluate whether a LESPB provided equivalent analgesia and clinical outcomes as compared to LPB in PFN for PFF. Material and Methods: We compared LPBs [L] with LESPBs [E], with 30 patients in each group, performed from June 2020 to June 2021 for PFN in PFF's. The primary outcome of this study was the average NRS pain scores over 24 hours postoperatively. Secondary outcomes included pain scores at different time points over 24 hours, opioid consumption between the groups at 24 hours postoperatively, time for request of first parenteral analgesia, quadriceps weakness and adverse events. Results: The average pain scores over 24 hours were better in the LESPB group as compared to the LPB group (p = 0.02). Further, only n = 5 (30%) of patients in the LESPB group required opioids, while n = 13 (43.333%) of patients in the LPB group required opioids. Moreover, the median time for request of first parenteral analgesia was 615 (480–975) minutes, weakness of quadriceps function occurred in 2 patients in the L group, which recovered at 3rd and 5th month, respectively, with no incidences of hemodynamic instability and respiratory complications. Conclusions: This trial demonstrated that single bolus LESPB is superior to LPB in terms of analgesic outcomes, has low adverse events, and is an agreeable substitute for patients with PFF undergoing a PFN.