Miracle-dz/UniFAR-FTUs huggingface dataset:
SOLAR FILAMENT MATERIAL OSCILLATIONS AND DRAINAGE BEFORE ERUPTION

Both large-amplitude longitudinal (LAL) oscillations and material drainage in a solar filament are associated with the flow of material along the filament axis, often followed by an eruption. However, the relationship between these two motions and a subsequent eruption event is poorly understood. We analyze a filament eruption using EUV imaging data captured by the Atmospheric Imaging Array on board the Solar Dynamics Observatory and the Hα images from the Global Oscillation Network Group. Hours before the eruption, the filament was activated, with one of its legs undergoing a slow rising motion. The asymmetric activation inclined the filament relative to the solar surface. After the active phase, LAL oscillations were observed in the inclined filament. The oscillation period increased slightly over time, which may suggest that the magnetic fields supporting the filament evolve to be flatter during the slow rising phase. After the oscillations, a significant amount of filament material was drained toward one filament endpoint, followed immediately by the violent eruption of the filament. The material drainage may further support the change in magnetic topology prior to the eruption. Moreover, we suggest that the filament material drainage could play a role in the transition from a slow to a fast rise of the erupting filament.
Plant Root Phenotyping Using Deep Conditional GANs and Binary Semantic Segmentation

This paper develops an approach to perform binary semantic segmentation on Arabidopsis thaliana root images for plant root phenotyping using a conditional generative adversarial network (cGAN) to address pixel-wise class imbalance. Specifically, we use Pix2PixHD, an image-to-image translation cGAN, to generate realistic and high resolution images of plant roots and annotations similar to the original dataset. Furthermore, we use our trained cGAN to triple the size of our original root dataset to reduce pixel-wise class imbalance. We then feed both the original and generated datasets into SegNet to semantically segment the root pixels from the background. Furthermore, we postprocess our segmentation results to close small, apparent gaps along the main and lateral roots. Lastly, we present a comparison of our binary semantic segmentation approach with the state-of-the-art in root segmentation. Our efforts demonstrate that cGAN can produce realistic and high resolution root images, reduce pixel-wise class imbalance, and our segmentation model yields high testing accuracy (of over 99%), low cross entropy error (of less than 2%), high Dice Score (of near 0.80), and low inference time for near real-time processing.
Bridging Central and Local Differential Privacy in Data Acquisition Mechanisms

We study the design of optimal Bayesian data acquisition mechanisms for a platform interested in estimating the mean of a distribution by collecting data from privacy-conscious users. In our setting, users have heterogeneous sensitivities for two types of privacy losses corresponding to local and central differential privacy measures. The local privacy loss is due to the leakage of a user’s information when she shares her data with the platform, and the central privacy loss is due to the released estimate by the platform to the public. The users share their data in exchange for a payment (e.g., through monetary transfers or services) that compensates for their privacy losses. The platform knows the distribution of privacy sensitivities but not their realizations, and must design a mechanism to solicit their preferences and then deliver both local and central privacy guarantees while minimizing the estimation error plus the expected payment to users. We first establish minimax lower bounds for the estimation error, given a vector of privacy guarantees, and show that a linear estimator is (near) optimal. We then turn to our main goal: designing an optimal data acquisition mechanism. We establish that the design of such mechanisms in a Bayesian setting (where the platform knows the distribution of users’ sensitivities and not their realizations) can be cast as a nonconvex optimization problem. Additionally, for the class of linear estimators, we prove that finding the optimal mechanism admits a Polynomial Time Approximation Scheme.
The Long Telling Story of “Endothelial Progenitor Cells”: Where Are We at Now?

Endothelial progenitor cells (EPCs): The name embodies years of research and clinical expectations, but where are we now? Do these cells really represent the El Dorado of regenerative medicine? Here, past and recent literature about this eclectic, still unknown and therefore fascinating cell population will be discussed. This review will take the reader through a temporal journey that, from the first discovery, will pass through years of research devoted to attempts at their definition and understanding their biology in health and disease, ending with the most recent evidence about their pathobiological role in cardiovascular disease and their recent applications in regenerative medicine.
Impact of diversity management on innovative work behavior: mediating role of human resource management and affective commitment

PurposeThis paper investigates the effect of diversity management on employees' innovative work behavior (IWB) through human resource management (HRM) and affective commitment (AC). Design/methodology/approachData were collected from 358 employees of small- and medium-sized enterprises in the Kurdistan Region of Iraq. The hypothesized model has been evaluated using structural equation modeling.FindingsFindings suggest that workforce diversity management directly and significantly affected HRM and AC. Furthermore, findings revealed that HRM significantly influenced both employees' IWB and AC, while AC had a significant positive influence on IWB. Moreover, concerning the indirect effects, AC and HRM significantly mediated the relationship between DM and employees' IWB.Research limitations/implicationsA cross-sectional single source dataset is used to evaluate the hypothesized model.Originality/valueGrounded in the social exchange and institutional theories, this research fills the gap in the literature by addressing the “black box” of how workforce DM influences employees' IWB while examining the mediating role of employees' AC and firm HRM policies.
Production and Application of Polymer Foams Employing Supercritical Carbon Dioxide

Polymeric foams have characteristics that make them attractive for different applications. However, some foaming methods rely on chemicals that are not environmentally friendly. One of the possibilities to tackle the environmental issue is to utilize supercritical carbon dioxide ScCO2 since it is a “green” solvent, thus facilitating a sustainable method of producing foams. ScCO2 is nontoxic, chemically inert, and soluble in molten plastic. It can act as a plasticizer, decreasing the viscosity of polymers according to temperature and pressure. Most foam processes can benefit from ScCO2 since the methods rely on nucleation, growth, and expansion mechanisms. Process considerations such as pretreatment, temperature, pressure, pressure drop, and diffusion time are relevant parameters for foaming. Other variables such as additives, fillers, and chain extenders also play a role in the foaming process. This review highlights the morphology, performance, and features of the foam produced with ScCO2, considering relevant aspects of replacing or introducing a novel foam. Recent findings related to foaming assisted by ScCO2 and how processing parameters influence the foam product are addressed. In addition, we discuss possible applications where foams have significant benefits. This review shows the recent progress and possibilities of ScCO2 in processing polymer foams.
Morphology, nuclear SNPs and mate selection reveal that COI barcoding overestimates species diversity in a Mediterranean freshwater amphipod by an order of magnitude

DNA sequence information has revealed many morphologically cryptic species worldwide. For animals, DNA‐based assessments of species diversity usually rely on the mitochondrial cytochrome c oxidase subunit I (COI) gene. However, a growing amount of evidence indicate that mitochondrial markers alone can lead to misleading species diversity estimates due to mito‐nuclear discordance. Therefore, reports of putative species based solely on mitochondrial DNA should be verified by other methods, especially in cases where COI sequences are identical for different morphospecies or where divergence within the same morphospecies is high. Freshwater amphipods are particularly interesting in this context because numerous putative cryptic species have been reported. Here, we investigated the species status of the numerous mitochondrial molecular operational taxonomic units (MOTUs) found within Echinogammarus sicilianus. We used an integrative approach combining DNA barcoding with mate selection observations, detailed morphometrics and genome‐wide double digest restriction site‐associated DNA sequencing (ddRAD‐seq). Within a relatively small sampling area, we detected twelve COI MOTUs (divergence = 1.8–20.3%), co‐occurring in syntopy at two‐thirds of the investigated sites. We found that pair formation was random and there was extensive nuclear gene flow among the ten MOTUs co‐occurring within the same river stretch. The four most common MOTUs were also indistinguishable with respect to functional morphology. Therefore, the evidence best fits the hypothesis of a single, yet genetically diverse, species within the main river system. The only two MOTUs sampled outside the focal area were genetically distinct at the nuclear level and may represent distinct species. Our study reveals that COI‐based species delimitation can significantly overestimate species diversity, highlighting the importance of integrative taxonomy for species validation, especially in hyperdiverse complexes with syntopically occurring mitochondrial MOTUs.
MAGNETIC PHASE TRANSITIONS AND THE MAGNETOTHERMAL PROPERTIES OF GADOLINIUM

A study of four Gd samples of different purities using ac susceptibility, magnetization, heat capacity, and direct measurements of the magnetocaloric effect in quasistatic and pulse magnetic fields revealed that all techniques yield the same value of the zero-field Curie temperature of 294(1) K. The Curie temperature determined from inflection points of the experimental magnetic susceptibility and heat capacity is in excellent agreement with those obtained from the magnetocaloric effect and Arrot plots. Above 2 T the temperature of this transition increases almost linearly with the magnetic field at a rate of $\ensuremath{\sim}6\mathrm{K}/\mathrm{T}$ in fields up to 7.5 T. The spin reorientation transition, which occurs at 227(2) K in the absence of a magnetic field, has been confirmed by susceptibility, magnetization, and heat-capacity measurements. Magnetic fields higher than 2\char21{}2.5 T apparently quench the spin reorientation transition and Gd retains its simple ferromagnetic structure from the ${T}_{C}(H)$ down to $\ensuremath{\sim}4\mathrm{K}. $ The nature of anomaly at $T\ensuremath{\cong}132\mathrm{K},$ which is apparent from ac susceptibility measurements along the $c$ axis, is discussed. The presence of large amounts of interstitial impurities lowers the second-order $\mathrm{paramagnetic}\ensuremath{\leftrightarrow}\mathrm{ferromagnetic}$ transition temperature, and can cause some erroneous results in the magnetocaloric effect determined in pulsed magnetic fields. The magnetocaloric effect was studied utilizing the same samples by three experimental techniques: direct measurements of the adiabatic temperature rise, magnetization, and heat capacity. All three techniques, with one exception, yield the same results within the limits of experimental error.
Specialized Palliative Care for Patients with Chronic Heart Failure at End of Life: Transfers, Emergency Department Visits, and Hospital Deaths.

Objective: Specialized palliative care (SPC) may contribute to improved quality of life in patients with life-limiting chronic heart failure (CHF). This study examined SPC and possible differences in the care process regarding emergency department (ED) visits, transfers, and place of death for severely ill patients with CHF. Materials and Methods: This retrospective observational registry study used the health care consumption data from the Stockholm Regional Council. Logistic regression analyses of age, sex, palliative care, comorbidities, and socioeconomic status were performed. Results: Of the 4322 individuals who died of heart failure between 2015 and 2019 and did not reside in a nursing home, 24% received SPC. Receiving SPC was associated with a lower odds ratio (OR) of ED visits (OR 0.24, p < 0.0001), unplanned transfers (OR 0.39, p < 0.0001), and emergency hospital as a place of death (OR 0.10, p < 0.0001). Furthermore, a better socioeconomic situation, younger age, and fewer comorbidities were associated with a lower OR of ED visits and transfers (p < 0.0001 to p = 0.013 in different comparisons). Multiple comorbidities (p < 0.0002) and younger age (p < 0.0001) were associated with a higher OR of emergency hospitals as a place of death. Conclusion: Approximately one-quarter of patients who died of heart failure received SPC. Receipt of SPC was associated with a significantly reduced number of ED visits, transfers between health care services, and risk of dying in emergency hospitals.
On the phonology of Bahasa Indonesia

1.1 In the recently published Grammar of the Indonesian Language (Grammatika Indonezijskogo ]azyka3 N. F. Alieva, V. D. Arakin, A. K. Ogloblin, J. X. Sirk. Moskva 1972) one of the authors, Ogloblin, gives an elaborated survey of the phonetics and phonemics of Bahasa Indo nesia (BI). His description is based partly on his own investigations, partly on the valuable observations made by other Soviet linguists during the last decennium (among others: N. D. Andreev, L. G. Zubkova). In the subsequent paragraphs I shall give a brief exposition of what seem to me to be the most interesting facts, and I shall offer a few remarks on the phonemic system as it is proposed by Ogloblin. Comments and additions are given in square brackets. In the quo tations of the phonetic data, I adhere to the author's notation as closely as possible.2 My additions and/or transcriptions are labeled with S. In a great number of instances the authors do not indicate the place of the stress. I write the stress wherever I am reasonably certain of its place. '<-' stands for 'is the realization of; '-*' means 'is realized as'. Since the grammar was published before the recent spelling reform, the examples are offered according to the now obsolete norm. I shall adhere to this practice.
Moments and lower bounds in the far-field of solutions to quasi-geostrophic flows

We consider the long time behavior of moments of solutions and of the solutions itself to dissipative Quasi-Geostrophic flow (QG) with sub-critical powers. The flow under consideration is described by the nonlinear scalar equation $\frac{\partial \theta}{\partial t} + u\cdot \nabla \theta + \kappa (-\Delta)^{\alpha}\theta =f$, $\theta|_{t=0}=\theta_0 $ Rates of decay are obtained for moments of the solutions, and lower bounds of decay rates of the solutions are established.
Prompting for Discovery: Flexible Sense-Making for AI Art-Making with Dreamsheets

Design space exploration (DSE) for Text-to-Image (TTI) models entails navigating a vast, opaque space of possible image outputs, through a commensurately vast input space of hyperparameters and prompt text. Minor adjustments to prompt input can surface unexpectedly disparate images. How can interfaces support end-users in reliably steering prompt-space explorations towards interesting results? Our design probe, DreamSheets, supports exploration strategies with LLM-based functions for assisted prompt construction and simultaneous display of generated results, hosted in a spreadsheet interface. The flexible layout and novel generative functions enable experimentation with user-defined workflows. Two studies, a preliminary lab study and a longitudinal study with five expert artists, revealed a set of strategies participants use to tackle the challenges of TTI design space exploration, and the interface features required to support them - like using text-generation to define local"axes"of exploration. We distill these insights into a UI mockup to guide future interfaces.
Correcting Diagnostic Test Sensitivity and Specificity for Patient Misclassifications Resulting from Use of an Imperfect Reference Standard

Investigational diagnostic tests are validated by using a reference standard (RS). If the RS is imperfect (i.e., it has sensitivity [Se] and/or specificity [Sp] < 1), incorrect values for the investigational test’s Se and Sp may result because of patient misclassification by the RS. Formulas were derived to correct a test’s Se and Sp that were determined by using an imperfect RS. The following derived formulas correct for misclassification and give the true numbers of disease-positive [nDP] and disease-negative patients [nDN] from the apparent number of disease-positive and disease-negative patients (anDP and anDN), and the Se and Sp of the RS (SeR, SpR): nDP = (anDP × SpR + anDN × SpR − anDN)/JR; nDN = (anDP × SeR + anDN × SeR − anDP)/JR, where JR is Youden’s Index for the RS (JR = SeR + SpR − 1). The following derived formulas give the correct Se and Sp of an investigational test (SeI and SpI): SeI = (anTPI × SpR − nDP × SeR × SpR + nDP × JR + nDN × SpR2 − nDN × SpR − SpR × anTNI + anTNI)/(nDP × JR); SpI = (anTPI − anTPI × SeR + nDP × SeR2 − nDP × SeR − SeR × nDN × SpR + nDN × JR + SeR × anTNI)/(nDN × JR), where anTPI is the apparent number of true-positive test results, and anTNI is the apparent number of true-negative test results. The derived formulas correct for patient misclassification by an imperfect RS and give the correct values of a diagnostic test’s Se and Sp.
Observation of shock wave elimination by a plasma in a Mach-2.5 flow

An experimental study on the influence of a plasma on the structure of an attached conical shock front appearing at the front end of a missile-shaped model has been carried out in a Mach-2.5 flow. The tip and the body of the model are designed as the cathode and anode for gaseous discharge, which produces a spraylike plasma moving around the tip. It is observed that the plasma has caused the shock front to separate from the model. The shock wave moves upstream in the form of a detached bow shock a sensible distance away from the model tip. The detached shock front appears to be highly dispersed in its new location as seen in the shadow video graphs of the flow. As the discharge current increases, experimental evidence shown in the video further reveals a distinct state of the flow without the presence of any shock wave.
Improving Pearson's chi-squared test: hypothesis testing of distributions -- optimally

Pearson's chi-squared test, from 1900, is the standard statistical tool for"hypothesis testing on distributions": namely, given samples from an unknown distribution $Q$ that may or may not equal a hypothesis distribution $P$, we want to return"yes"if $P=Q$ and"no"if $P$ is far from $Q$. While the chi-squared test is easy to use, it has been known for a while that it is not"data efficient", it does not make the best use of its data. Precisely, for accuracy $\epsilon$ and confidence $\delta$, and given $n$ samples from the unknown distribution $Q$, a tester should return"yes"with probability $>1-\delta$ when $P=Q$, and"no"with probability $>1-\delta$ when $|P-Q|>\epsilon$. The challenge is to find a tester with the \emph{best} tradeoff between $\epsilon$, $\delta$, and $n$. We introduce a new tester, efficiently computable and easy to use, which we hope will replace the chi-squared tester in practical use. Our tester is found via a new non-convex optimization framework that essentially seeks to"find the tester whose Chernoff bounds on its performance are as good as possible". This tester is $1+o(1)$ optimal, in that the number of samples $n$ needed by the tester is within $1+o(1)$ factor of the samples needed by \emph{any} tester, even non-linear testers (for the setting: accuracy $\epsilon$, confidence $\delta$, and hypothesis $P$). We complement this algorithmic framework with matching lower bounds saying, essentially, that"our tester is instance-optimal, even to $1+o(1)$ factors, to the degree that Chernoff bounds are tight". Our overall non-convex optimization framework extends well beyond the current problem and is of independent interest.
Cell Therapy and Investigation of the Angiogenesis of Fibroblasts with Collagen Hydrogel on the Healing of Diabetic Wounds.

Objectives A diabetic ulcer is a common disease in patients with diabetes. Because of antibiotic resistance, new therapeutic alternatives are being considered in diabetic foot patients to reduce complications and mortality. This study aimed to evaluate the effect of collagen hydrogel on the wound-healing process in diabetic rats. Materials and Methods Diabetic wounds were induced with streptozotocin in all 42 male Wistar rats. The rats were divided into four groups: (a) treated with fibroblast cells, (b) collagen hydrogel, (c) collagen cultured with fibroblast cells, and (d) a control group. Microscopic and histological (hematoxylin and eosin staining and Mason trichrome staining), measurement of wound surface with image J, skin density and thickness by the ultrasound probe, and skin elasticity with cytometer tool were used to evaluate wound healing at days 14 and 21 after the treatment. Results The results showed that treating diabetic wounds with fibroblasts cultured in collagen hydrogel greatly reduces inflammatory responses in the skin tissue and significantly accelerates the healing process. In addition, 21 days after the start of treatment, skin elasticity, thickness, and density were higher in the collagen + fibroblast group than in the control group. Conclusion In addition, the results of the present study show that diabetic wound dressing can significantly reduce the inflammatory phase in the wound healing process by increasing the speed of collagen synthesis, skin density and elasticity, and angiogenesis.
Engaging young people with disabilities in research about their experiences of physical education and sport: A scoping review of methodologies and methods

Young people with disabilities (PWD) have increasingly become part of complex and important conversations surrounding their experiences and engagement in physical education (PE) and sport. Despite more young voices being heard, scant attention has been given to why we are listening, who we are listening to, and how we are listening. In this scoping review, we focus on the methodologies and methods used when researching the perspectives young PWD hold of PE and sport. Through searching Google Scholar, PE and sport journals, and citations and references of relevant research studies, we retrieved 52 empirical publications and information was extracted on their aims, country of origin, context and participants, research design, data sources, analytical, theoretical and conceptual frameworks, and key findings and recommendations. By reviewing methodologies and methods, we were able to identify that: authors often justified their work as ‘filling a gap’; varied, and often minimal, participant information was provided; and finally, data generation methods were at times exclusionary and/or not sensitive to disability research contexts. Moving forward, we first recommend that careful consideration is given to why research is being done beyond contributing knowledge to the field. Second, detailed information must be provided about participants to have a clearer picture about who has and has not been included in research so that findings can be contextualised. Finally, greater attention must be given to alternative and inclusive data generation methods to engage more diverse young people, specifically those with high support needs, in research about PE and youth sport.