Miracle-dz/UniFAR-FTUs huggingface dataset:
Primary intracranial synovial sarcoma: A case report and review of literature

Background: Primary intracranial synovial sarcomas (PrISS) are unusual dural based mesenchymal tumors seen most commonly in the supratentorial compartment. They can mimic a spontaneous intracranial hemorrhage or a high-grade glioma on imaging. Case Description: A 31-year-old male presented with headache and right hemiparesis for 2 weeks. CT brain revealed a left frontal spontaneous intracerebral hemorrhage. PrISS revealed a heterogeneously ring enhancing solid cystic lesion with attachment to convexity dura. Intraoperatively, it mimicked a high-grade glioma. Histopathology report showed features of a synovial sarcoma, which was later confirmed with IHC. Classical SYT-SSX2 translocation was confirmed only on RTPCR after fluorescent in situ hybridization (FISH) was negative for same. Whole body positron emission tomography (PET-CT) did not show any extracranial tumor. Despite radiotherapy, there were recurrence and tumor progression at 6 months and the patient succumbed 11 months later. Conclusion: PrISS is an unusual aggressive intracranial neoplasm that carries a worse prognosis when compared nonintracranial synovial sarcomas. Molecular cytogenetics (FISH and RTPCR) are essential for confirming the diagnosis, though FISH seems to have a lower sensitivity and can yield false negative results as was noted in this case.
Impact of circadian clock dysfunction on human health

All living organisms exhibit circadian rhythms. Humans show circadian rhythm of the different physiological functions such as sleep-wake cycle, core body temperature, feeding behavior, metabolic activity, heart rate variability, hormone secretion, and others. The hypothalamic suprachiasmatic nucleus (SCN) acts as a primary circadian pacemaker. Peripheral tissues have an endogenous circadian clock; however, SCN synchronizes the circadian activity of the peripheral clocks. The retinohypothalamic tract (RHT) from retinal ganglionic cells carries the photic signal into the SCN that regulates the rhythmic expression of the core clock genes through the feedback loop. At the output level, the SCN connects with the pineal gland and the peripheral tissues with the help of neuroendocrine mediators. Disruption of circadian clock functions is detrimental to health. Shift work, night work, chronic or acute jet lag, and light-at-night have adverse effects on circadian functions. Misalignment of circadian rhythm alters the expression of core clock genes, leading to deregulation of cellular activity and metabolic functions. Circadian rhythm dysfunction causes many pathologic conditions, including sleep disorders, cardiovascular problems, metabolic dysfunction, infertility, poor physical performance, as well as cancer. The present work has reviewed the relationship between circadian clock dysfunction and impaired physiological activities.
Rumination and threat-biased interpretation mediate posttraumatic stress and growth responses to military stressors

ABSTRACT We examined the role of rumination and threat-biased interpretation in stress and growth responses to military stressors. Two online surveys were completed by 183 (survey 1) and 393 (survey 2) currently serving or retired military personnel. The surveys measured exposure to potential military stressors (exposure to combat, witnessing the consequences of war, and perceived moral injury), posttraumatic stress symptomatology (PTSS), posttraumatic growth (PTG), and personal wellbeing, with survey 1 including measures of rumination, and survey 2 including a measure of threat-biased interpretation. Path analyses revealed that indirect paths from both witnessing the consequences of war and experiencing betrayal to PTSS were mediated by intrusive rumination and threat-biased interpretation, and that indirect paths from both betrayal and transgressions by others to PTG were mediated by deliberate rumination and threat-biased interpretation. The results reveal the idiosyncratic nature of military stressors, their differential involvement with cognitions that underpin rumination about past events and interpretation of current events, and their relevance to posttraumatic stress and growth in military personnel.
The Association Between Human Papillomavirus Infection and Preterm Labor: A Literature Mini-review

: Human papillomavirus (HPV) is the primary cause of cervical dysplasia and the most common sexually-transmitted infection. Based on the available studies, HPV infection appears to correlate with adverse pregnancy outcomes, including preterm labor. However, there is inconsistency in the literature regarding this association. In this context, the aim of this mini-review was to bring together current research findings focusing on the impact of HPV infection on preterm birth.
Comparing Flowchart and Swim Lane Activity Diagram for Aiding Transitioning to Object-Oriented Implementation

Object Oriented Programming (OOP) paradigm is one of the programming styles that emerged in response to the challenge of designing complex software. However, students find it hard to conceptualize objects when they were already accustomed to non Object Oriented approach to programming. This paper hypothesizes that introducing Object Oriented (OO) notations to students during the design phase will smoothen their transition to Object Oriented Programming. To test the hypothesis, an experiment was conducted with the students of Al-Qalam University Katsina, Nigeria. The participating students were divided into two groups: (i) Flowchart group - representing the classical approach where flowcharts were used to design solutions. (ii) Activity Diagram group - which represents the control group in which swim lane activity diagram, as Object Oriented notation, was introduced to them at the design phase. Both groups were later introduced to Class Responsibility Collaborators (CRC) cards as an Object Oriented implementation model. The students were tested, four different times, on how well they converted flowcharts or activity diagrams, as the case may be, into Class Responsibility Collaborators cards, and their performances were recorded. The results were analyzed using Repeated Measure Analysis of Variance (ANOVA). Unexpectedly, the Flowchart group outperformed the Activity Diagram group but the results were not statistically significant. Similarly, there was no statistical difference between males’ and females’ performances.
The evolving magnetic scales of the outer solar atmosphere and their potential impact on heliospheric turbulence

The presence of turbulent phenomena in the outer solar atmosphere is a given. However, because we are reduced to remotely sensing the atmosphere of a star with instruments of limited spatial and/or spectral resolution, we can only infer the physical progression from macroscopic to microscopic phenomena. Even so, we know that many, if not all, of the turbulent phenomena that pervade interplanetary space have physical origins at the Sun and so in this brief article we consider some recent measurements which point to sustained potential source(s) of heliospheric turbulence in the magnetic and thermal domains. In particular, we look at the scales of magnetism that are imprinted on the outer solar atmosphere by the relentless magneto-convection of the solar interior and combine state-of-the-art observations from the Solar Dynamics Observatory (SDO) and the Coronal Multi-channel Polarimeter (CoMP) which are beginning to hint at the origins of the wave/plasma interplay prevalent closer to the Earth. While linking these disparate scales of observation and understanding of their connection is near to impossible, it is clear that the constant evolution of subsurface magnetism on a host of scales guides and governs the flow of mass and energy at the smallest scales. In the near future significant progress in this area will be made by linking observations from high resolution platforms like the Interface Region Imaging Spectrograph (IRIS) and Advanced Technology Solar Telescope (ATST) with full-disk synoptic observations such as those presented herein.
Multichannel SAR wide-swath imaging based on adaptive removal of azimuth ambiguities

By exploiting the direction of arrival (DoA) information of azimuth ambiguity, an innovative algorithm for the adaptive suppression of azimuth ambiguity for multichannel synthetic aperture radar (SAR) wide-swath imaging is presented. It firstly estimates the DoA value of each azimuth component within a Doppler cell using the efficient noise subspace-based iterative estimation technique. Then the spatial filter for sequentially extracting the desired azimuth component is derived, which is designed to be used with the newly estimated DoA information within each Doppler bin. Finally, the azimuth ambiguities can be suppressed via the implementation of spatial filtering. The proposed approach is robust to aircraft velocity errors, and its effectiveness is validated via simulation results.
Evaluation of artificial neural network methods to forecast short-term solar power generation: a case study in Eastern Mediterranean Region

: Solar power forecasting is substantial for the utilization, planning, and designing of solar power plants. Global solar irradiation (GSI) and meteorological variables have a crucial role in solar power generation. The ever-changing meteorological variables and imprecise measurement of GSI raise diﬀiculties for forecasting photovoltaic (PV) output power. In this context, a major motivation appears for the accurate forecast of GSI to perform effective forecasting of the short-term output power of a PV plant. The presented study comprises of four artificial neural network (ANN) methods; recurrent neural network (RNN) method, feedforward backpropagation neural network (FFBPNN) method, support vector regression (SVR) method, and long short-term memory (LSTM) for daily total GSI prediction of Tarsus by using meteorological data. Moreover, this study proposes a model that utilizes the predicted daily GSI for output power forecasting of a grid-connected PV plant. The obtained results are compared with the output power generation data of a 350 kW solar power plant. The results are evaluated with the performance indices as mean absolute percentage error (MAPE), normalized root mean squared error (NRMSE), weighted mean absolute error (WMAE), and normalized mean absolute error (NMAE). FFBPNN method is chosen with the best results of MAPE 7.066%, NMAE 3.629%, NRMSE 4.673%, and WMAE 5.256%.
Complex analysis, operators, and related topics : the S.A. Vinogradov memorial volume

Stanislav Aleksandrovich Vinogradov, his life and mathematics. - List of publications of S.A. Vinogradov. - Interpolation problems for analytic functions continuous in the closed disk and for functions whose sequence of coefficients is inlp. - Free interpolation in spaces of analytic functions. - Contributed Papers. - On embedding theorems for coinvariant subspaces of the shift operator, I. - Continuous and compact embeddings between star-invariant subspaces. - Rational functions in Bergman spaces. - S. A. Vinogradov, as I remember him. - The Bellman functions and sharp weighted inequalities for square functions. - Multiplicative chaos and multimeasures. - Some remarks to problems of approximation with prescribed rate. - Interpolation involving bounded bianalytic functions. - Carleson's interpolation theorem deduced from a result of Pick. - A-? zero sets: new methods and techniques. - Interpolation sets for the Holder spaces of functions analytic in a strip. - Scattering problem with physical behavior of scattering matrix and operator relations. - Spectra of inner functions andlp-multipliers. - The theorem on three spheres for harmonic differential forms. - Traces and extensions of multipliers in pairs of Sobolev spaces. - Complete version of Turan's lemma for trigonometric polynomials on the unit circumference. - Ball, Haagerup, and distribution functions. - Carleson measures of Bergman spaces in domains with nonsmooth boundary. - On the zeros of tails of power series. - Regularity conditions for vectorial stationary processes. - The Friedrichs operator of a planar domain. - Parametrical representations of some classes of holomorphic functions in the disk. - Double power series and reproducing kernels. - Outer functions in yet another class of analytic functions. - Estimates for the approximation numbers of the weighted Riemann-Liouville operator in the spacesLp. - Special transformations of Cauchy type integral spaces. - A dimension-free Carleson measure inequality. - Carleman formula for some spaces of functions analytic in the disk and smooth in its closure.
THE DIFFUSE AND COMPACT X-RAY COMPONENTS OF THE STARBURST GALAXY HENIZE 2–10

Chandra X-ray Observatory imaging spectroscopy of the starburst galaxy Henize 2–10 (He 2–10) reveals a strong nuclear point source and at least two fainter compact sources embedded within a more luminous diffuse thermal component. Spectral fits to the nuclear X-ray source imply an unabsorbed X-ray luminosity Lx>1040 erg s−1 for reasonable power law or blackbody models, consistent with accretion onto a >50 M☉ black hole behind a foreground absorbing column of NH>1023 cm−2. Two of these point sources have Lx = 2 − 5 × 1038 erg s−1, comparable to luminous X-ray binaries. These compact sources constitute a small fraction (⩽16%) of the total X-ray flux from He 2–10 in the 0.3–6.0 keV band and just 31% of the X-rays in the hard 1.1–6.0 keV band which is dominated by diffuse emission. Two-temperature solar-composition plasmas (kT ≃ 0.2 keV and kT ≃ 0.7 keV) fit the diffuse X-ray component as well as single-temperature plasmas with enhanced α/Fe ratios. Since the observed radial gradient of the X-ray surface brightness closely follows that of the Hα emission, the composition of the X-ray plasma likely reflects mixing of the ambient cool/warm interstellar medium (ISM) with an even hotter, low emission measure plasma, thereby explaining the ∼solar ISM composition. Aperture synthesis 21 cm maps show an extended neutral medium to radii of 60″ so that the warm and hot phases of the ISM, which extend to ∼30″, are enveloped within the 8 × 1020 cm−2 contour of the cool neutral medium. This extended neutral halo may serve to inhibit a starburst-driven outflow unless it is predominantly along the line of sight. The high areal density of star formation can also be reconciled with the lack of prominent outflow signatures if He 2–10 is in the very early stages of developing a galactic wind.
On the Classical Solutions for the Kuramoto-Sivashinsky Equation with Ehrilch-Schwoebel Effects

The Kuramoto-Sivashinsky equation with Ehrilch-Schwoebel effects models the evolution of surface morphology during Molecular Beam Epitaxy growth, provoked by an interplay between deposition of atoms onto the surface and the relaxation of the surface profile through surface diffusion. It consists of a nonlinear fourth order partial differential equation. Using energy methods we prove the well-posedness (i.e., existence, uniqueness and stability with respect to the initial data) of the classical solutions for the Cauchy problem, associated with this equation.
MHD blood flow and heat transfer through an inclined porous stenosed artery with variable viscosity.

In this article, effects of heat transfer on MHD blood flow through a stenosed inclined porous artery with heat source have been investigated. The viscosity of the blood is assumed to be varying radially with hematocrit throughout the region of the artery. Governing equations have been derived by treating blood as incompressible magnetohydrodynamic (MHD) Newtonian fluid. Momentum and energy equations of the fluid flow are simplified under the assumption of mild stenosis. Homotopy perturbation method (HPM) is used to solve nonlinear differential equations for velocity and temperature profiles of the blood flow. Variation of flow rate and shear stress for different values of inclination angle and hematocrit parameter along the diseased part of artery have been plotted graphically. For having the adequate insight of the flow pattern in the diseased artery, velocity contours have been plotted for different values of the height of the stenosis and for different inclination angles of the artery.
Synchrotron and inverse-Compton emission from blazar jets I: a uniform conical jet model.

In the first of a series of papers investigating emission from blazar jets from radio to highenergy gamma-rays, we revisit the class of models where the jet has a uniform conical ballistic structure. We argue that by using simple developments of these models, in the context of new multi-frequency data extending to -ray energies, valuable insights may be obtained into the properties that fully realistic models must ultimately have. In this paper we consider the synchrotron and synchrotron-self-Compton emission from the jet, modelling the recent simultaneous multi-wavelength observations of BL Lac. This is the first time these components have been fitted simultaneously for a blazar using a conical jet model. In the model we evolve the electron population dynamically along the jet taking into account the synchrotron and inverse-Compton losses. The inverse-Compton emission is calculated using the Klein-Nishina cross section and a relativistic transformation into the jet frame, and we explicitly show the seed photon population. We integrate synchrotron opacity along the line of sight through the jet plasma, taking into account the emission and opacity of each section of the jet. In agreement with previous studies of radio emission, we find that a conical jet model which conserves magnetic energy produces the characteristic blazar flat radio spectrum, however, we do not require any fine-tuning of the model to achieve this. Of particular note, in our model fit to BL Lac—which at 10 37 W is a relatively low jet-power source—we find no requirement for significant re-acceleration within the jet to explain the observed spectrum.
The physics potential of proton–nucleus collisions at the TeV scale

The LHC brings nuclear collisions to the TeV scale for the first time and the first data show the qualitative differences of this new regime. The corresponding phase space available encompasses completely uncharted regions of QCD in which high-density or high-temperature domains can be identified. Proton–nucleus runs are essential for a complete interpretation of the data and for the study of new regimes dominated by large occupation numbers in the hadronic wavefunction. I comment here on the physics opportunities for p+Pb runs at the LHC and d+Au runs at the RHIC and the corresponding needs in view of the new Pb+Pb data from the LHC.
Noise-enhanced phase synchronization of weakly coupled chaotic oscillators

It is well-known that noise degrades phase synchronization of periodic oscillators by inducing phase slips. Here we study constructive effects of noise on phase synchronization in coupled chaotic oscillators. We find that in the weak coupling regime below the synchronization threshold, noise can enhance phase synchronization significantly. This counterintuitive and constructive effect of noise is demonstrated in coupled Rossler chaotic oscillators with various measures of phase synchronization.
Sistema híbrido inteligente para el control y operación de un convertidor elevador en modo Soft-Switching

En este trabajo de investigación se presenta una estrategia de control inteligente implementada en un convertidor elevador con topología de medio puente. El sistema se usa para asegurar que el convertidor funcione en modo "Soft-Switching". El primer paso es realizar el análisis del convertidor de potencia, mostrando los dos posibles modos de funcionamiento: "Hard-Switching" y "Soft-Switching". Posteriormente se implementa un modelo inteligente con el fin de identificar el modo de funcionamiento del convertidor. Este modelo se basa en un algoritmo de clasificación mediante técnicas inteligentes que es capaz de diferenciar entre los dos modos de funcionamiento. Se han obtenido muy buenos resultados de clasificación y una alta precisión, permitiendo la implementación del modelo en la estrategia de control del convertidor. La implementacion de este sistema permite asegurar que el convertidor funcione en el modo deseado: modo "Soft-Switching".
How has the COVID-19 Pandemic Affected Student Mental Health?

The impact of the COVID-19 pandemic on the mental health of students has been significant, with increased pressure due to the various restrictions and measures that were enforced in the education sector. Academic pressure and difficulties paired with the insecurity about the future has generally worsened students' mental health, with surges of cases as a result of pandemic pressures. Key aspects of the pandemic affecting students are outlined and explored in depth, using different studies and surveys to reach an overall understanding of the impacts on student mental health.
Agendamento de Contêineres Ciente da QoE

O provedor de nuvem compartilha seus recursos computacionais entre diferentes clientes, co-localizando as aplicações no mesmo servidor. No entanto, isso pode causar degradação nas aplicações. Além disso, os provedores de nuvem utilizam métricas de Qualidade de Serviço (QoS) como forma de medir a qualidade do serviço entregue aos seus clientes. Essas métricas são pré-estabelecidas e especificadas no Service Level Objective (SLO). Contudo, o SLO baseado em QoS é insuficiente para garantir aos usuários das aplicações uma boa Qualidade de Experiência (QoE). A dissertação lida com esse problema, propondo um agendador de contêiner ciente da QoE em um ambiente de nuvem onde as aplicações sofrem interferência causada pela co-localização. Propomos uma nova abordagem que utiliza métodos de aprendizado de máquina para estimar a QoE que a nuvem pode oferecer, considerando atributos da nuvem. Experimentos mostraram que o agendamento com reconhecimento da QoE pode melhorar a QoE dos usuários, assim como reduzir o uso de recursos.
Large-N -approximated field theory for multipartite entanglement

We study the characterization of multipartite entanglement for the random states of an $n$-qbit system. Unable to solve the problem exactly we generalize it, changing complex numbers into real vectors with $N_c$ components (the original problem is recovered for $N_c=2$). Studying the leading diagrams in the large-$N_c$ approximation, we unearth the presence of a phase transition and, in an explicit example, show that the so-called entanglement frustration disappears in the large-$N_c$ limit.
Negative heat capacity for a Klein-Gordon oscillator in non-commutative complex phase space

We obtain exact solutions to the two-dimensional Klein-Gordon oscillator in a non-commutative complex phase space to first order in the non-commutativity parameter. We derive the exact non-commutative energy levels and show that the energy levels split to $2m$ levels. We find that the non-commutativity plays the role of a magnetic field interacting automatically with the spin of a particle induced by the non-commutativity of complex phase space. The effect of the non-commutativity parameter on the thermal properties is discussed. It is found that the dependence of the heat capacity $C_V$ on the non-commutative parameter gives rise to a negative quantity. Phenomenologically, this effectively confirms the presence of the effects of self-gravitation induced by the non-commutativity of complex phase space.