Miracle-dz/UniFAR-FTUs huggingface dataset:
Quasar-Galaxy Correlations: A Search for Amplification BIAS

Weak gravitational lensing by clusters and superclusters can change our perception of the distribution of bright background quasars through a phenomenon known as amplification bias. It has been suggested that this lensing will lead to an association of moderate redshift quasars (z ∼ 1.0–2.0) and foreground galaxies (z ∼ 0.2–0.3). We report on the analysis of a homogeneous sample of 32 CCD fields centered on quasars that are bright both at radio (S5 GHz > 1 Jy) and optical (V < 18.5) wavelengths, along with 11 control fields. These 69′ × 69′ fields are a small subset of our larger survey of the fields around approximately 100 quasars and approximately 20 control fields. The quasars presented here are chosen to have the highest potential for evidence of this weak lensing effect. We find no evidence for the presence of rich galaxy clusters (Abell richness class = 1) in the foreground of these fields. However, using a Spearman rank-order correlation test, we have detected a correlation between galaxy number density and angular distance from bright quasars on scales less than 30′ with a significance of 99%. This angular correlation is consistent with the recent semianalytic models of Dolag & Bartelmann that incorporate nonlinear evolution of matter.
Theoretical Research on the Dynamic Crack Propagation Velocity Based on Nonlocal Field Theories

The purpose of this paper is to discuss the nonlocal effect on dynamic crack propagation velocity. Some experimental phenomena in dynamic fracture and simulative results using molecular & atom dynamics were analyzed and discussed in this paper. The authors found that there were still some disagreements on the dynamic crack propagation velocity. Based on these researches, we introduced nonlocal field theories into the estimation of dynamic crack propagation velocity. The dynamic crack propagation velocity is affected not only by the crack instability, but by characteristic length of material. A nonlocal characteristic length parameter M is defined through a double pile-up dislocation model. According to the Mott’s research method for crack velocity in dynamic fracture and the nonlocal field theories, an approximate theoretical dynamic propagation velocity is obtained. And we conclude that the velocity is related to the combined activity of the nonlocal characteristic length parameter M, the velocity of longitudinal wave, constant k, crack length and Poisson’s ratio.
Voyager Measurements of the Mass Composition of Cosmic-Ray Ne, Mg, Si and S Nuclei

We report new measurements of the mass composition of cosmic-ray Ne, Mg, Si, and S nuclei made on the Voyager spacecraft. These measurements have ~4 times the statistical accuracy of previously published measurements covering these four charges. With the new cosmic-ray source mass fractions of these elements that we obtain, only the isotope 22Ne shows a cosmic-ray source abundance that is significantly different from the solar abundances. The limits of ±15% that we set on the cosmic-ray source-to-solar abundance ratios of 25Mg/24Mg and 26Mg/24Mg as well as the heavier Si isotopes place severe limits on the models that have been proposed to explain compositional differences between galactic cosmic rays and solar system abundances. The only two statistically significant isotopic differences between the cosmic-ray source and the solar system in the charge range Z = 6-16 now appear to be the underabundance of 14N and the overabundance of 22Ne. This suggests to us that the helium-burning process in which 14N is turned into 22Ne plays an important role in at least some of the sources of those particles ultimately accelerated as cosmic rays.
Sprint and Jump Training on Sand vs. Grass Surfaces: Effects on the Physical Performance of Young Soccer Players

Abstract Pereira, LA, Freitas, TT, Zabaloy, S, Ferreira, RCA, Silva, ML, Azevedo, PHSM, and Loturco, I. Sprint and jump training on sand versus grass surfaces: effects on the physical performance of young soccer players. J Strength Cond Res 37(9): 1828–1833, 2023—The aims of this study were to (a) examine the effects of a 6-week sand training program including both sprint and jump exercises on the speed-related and vertical jump performance of elite young soccer players and (b) compare the changes induced by a sand training scheme with those induced by a similar training program (in volume, intensity, and exercise types) performed on grass. Twenty-four under-20 soccer players were randomly allocated to 2 training groups, as follows: “sand” (n = 12) or “grass” (n = 12) groups. Athletes performed squat and countermovement jumps, linear sprints, and Zigzag change-of-direction speed tests at pre-, mid- (after 6 training sessions), and postintervention (after 12 training sessions). Both groups exhibited similar increases in the vertical jump and Zigzag performance after the 6-week training period (p values ranging from 0.0001 to 0.025; effect size ranging from 1.05 to 3.78, for main effect of time). No significant changes were detected for the linear sprint velocity for both the groups (p values ranging from 0.079 to 1.00; effect size ranging from 0.07 to 0.65, for main effect of time). In summary, training on sand or grass surfaces resulted in similar improvements in the physical performance of elite young soccer players. This study confirms the current evidence on the effectiveness of both soft and harder training surfaces in improving the sprint and jump performance of team-sport athletes.
Field gamma spectrometry, Monte Carlo simulations and potential of non-invasive measurements

The determination of gamma dose rates is of prior importance in the field of luminescence dating methods. In situ measurements are usually performed by the insertion of dosimeters or a portable gamma spectrometer cell in sediments. In this paper, Monte-Carlo simulations using the Geant4 toolkit allow the development of a new technique of insitu gamma dose rate evaluations: a spectrometer cell is placed on the surface of sediments under excavation to acquire successive spectra as sediments are removed by excavations. The principle of this non-invasive technique is outlined and its potential is discussed, especially in the case of environments in which radioelements are heterogeneously distributed. For such cases, a simple method to reconstruct gamma dose rate values with surface measurements using an attenuator is discussed, and an estimation of errors is given for two simple cases. This technique appears to be applicable, but still needs experimental validation.
TrinityRCL: Multi-Granular and Code-Level Root Cause Localization Using Multiple Types of Telemetry Data in Microservice Systems

The microservice architecture has been commonly adopted by large scale software systems exemplified by a wide range of online services. Service monitoring through anomaly detection and root cause analysis (RCA) is crucial for these microservice systems to provide stable and continued services. However, compared with monolithic systems, software systems based on the layered microservice architecture are inherently complex and commonly involve entities at different levels of granularity. Therefore, for effective service monitoring, these systems have a special requirement of multi-granular RCA. Furthermore, as a large proportion of anomalies in microservice systems pertain to problematic code, to timely troubleshoot these anomalies, these systems have another special requirement of RCA at the finest code-level. Microservice systems rely on telemetry data to perform service monitoring and RCA of service anomalies. The majority of existing RCA approaches are only based on a single type of telemetry data and as a result can only support uni-granular RCA at either application-level or service-level. Although there are attempts to combine metric and tracing data in RCA, their objective is to improve RCA's efficiency or accuracy rather than to support multi-granular RCA. In this article, we propose a new RCA solution TrinityRCL that is able to localize the root causes of anomalies at multiple levels of granularity including application-level, service-level, host-level, and metric-level, with the unique capability of code-level localization by harnessing all three types of telemetry data to construct a causal graph representing the intricate, dynamic, and nondeterministic relationships among the various entities related to the anomalies. By implementing and deploying TrinityRCL in a real production environment, we evaluate TrinityRCL against two baseline methods and the results show that TrinityRCL has a significant performance advantage in terms of accuracy at the same level of granularity with comparable efficiency and is particularly effective to support large-scale systems with massive telemetry data.
The domain derivative of time‐harmonic electromagnetic waves at interfaces

The scattering of time‐harmonic electromagnetic waves by a penetrable obstacle is considered. In view of shape optimization or inverse reconstruction problems, the domain derivative of the scattering problem is investigated. Existence of the derivative in the sense of a Fréchet derivative and a characterization by a transmission boundary value problem are shown. Copyright © 2012 John Wiley & Sons, Ltd.
Enhancement of Electron Bunch Acceleration by the Wakefield Generated with Periodical Chirped Laser Pulse in under Dense Plasma

This paper presents a two dimensional analytical model for a linear laser wakefield generation by the chirped laser pulse and electron bunch acceleration has been studied numerically. It is found that the negative periodical chirp leads to increase the longitudinal and transverse components of the wakefield amplitude by one order of magnitude. In this status, we inject an electron bunch with the initial energy of about 2MeV in front of the periodical chirped laser pulse and we saw the final energy of the trapped electrons arrive to about 0.9Gev in 17mm of plasma length, with an energy spread about 1% and a the emmitance of the order of 0.12 mm mrad.
Evolutionary synthesis of the stellar population in elliptical galaxies. I. Ingredients, broad-band colors, and infrared features

Broad-band photometric data and infrared line indices have been combined with new results on giant-branch luminosity functions to yield population synthesis for giant elliptical galaxies. If the main-sequence mass function is a power law of slope x, a value x<1 is indicated. This yields rather rapid luminosity evolution and a large correction to the deceleration parameter q$sub 0$ as derived from the Hubble diagram for first-ranked cluster ellipticals. The uncertainties are discussed. (AIP)
Rheological properties and microstructural evolution of semi-flexible fiber suspensions under shear flow

The mechanical properties of fiber-reinforced polymers are highly dependent on fiber orientation. A key factor is fiber flexibility, which varies with the intrinsic properties of the fiber, its aspect ratio, and the force of the flow field. In this work, the rheological behavior of model suspensions consisting of a Newtonian silicone oil and fibers with different flexibilities has been studied in transient shear flow. The viscous and elastic properties of the fiber suspensions were shown to increase markedly with fiber flexibility. The suspensions exhibited a viscosity overshoot in stress growth experiments and the magnitude and width of the overshoot became larger as the fiber flexibility increased. The evolution of the suspensions microstructure has also been monitored at different shear rates. The components of the second-order orientation tensor at different times (or strain) were calculated using the images obtained from the visualization experiments. Those experiments showed that fiber orientation w.
Experimental Study of Alfvén‐Wave Properties

Alfven hydromagnetic waves are propagated through a cylindrical plasma. The wave velocity, attenuation, impedance, and energy transfer are studied. The theoretical equations predict correctly the functional dependence of the velocity and attenuation, and from these quantities accurate measurements of plasma density and temperature can be obtained. A qualitative agreement between theory and experiment is obtained for the hydromagnetic coaxial waveguide impedance, and the energy transferred from an oscillating circuit to the hydromagnetic wave is measured to be 43 ± 10%.
ON CONSERVATION AT GRID INTERFACES.

This paper considers the solution of hyperbolic systems of conservation laws on discontinuous grids. In particular, we consider what happens to conservation at grid interfaces. A procedure is presented to derive conservative difference approximations at the grid interfaces for two-dimensional grids which overlap in an arbitrary configuration. The same procedures are applied to compute interface formulas for grids which are refined in space and/or time, and for continuous grids where a switch in the scheme causes the discontinuity.
MAP estimation of target manoeuvre sequence with the expectation-maximization algorithm

Two algorithms are derived for the problem of tracking a manoeuvring target based on a sequence of noisy measurements of the state. Manoeuvres are modeled as unknown input (acceleration) terms entering linearly into the state equation and chosen from a discrete set. The expectation maximization (EM) algorithm is first applied, resulting in a multi-pass estimator of the MAP sequence of inputs. The expectation step for each pass involves computation of state estimates in a bank of Kalman smoothers tuned to the possible manoeuvre sequences. The maximization computation is efficiently implemented using the Viterbi algorithm. A second, recursive estimator is then derived using a modified EM-type cost function. To obtain a dynamic programming recursion, the target state is assumed to satisfy a Markov property with respect to the manoeuvre sequence. This results in a recursive but suboptimal estimator implementable on a Viterbi trellis. The transition costs of the latter algorithm, which depend on filtered estimates of the state, are compared with the costs arising in a Viterbi-based manoeuvre estimator due to Averbuch, et al. (1991). It is shown that the two criteria differ only in the weighting matrix of the quadratic part of the cost function. Simulations are provided to demonstrate the performance of both the batch and recursive estimators compared with Averbuch's method and the interacting multiple model filter.
Electromechanical properties of silicone-PZT (lead-zirconate-titanate) composite

Dielectric elastomer composites are widely used electromechanical actuators. Compounding of dielectric elastomers with electroceramics helps to decrease the required electric field. In this work, silicone rubber was compounded with Lead- Zirconate-Titanate (PZT) electroceramic powder by the help of a silane coupling agent for better compatibility between organic ceramic and inorganic polymer. Modified PZT was added to silicone rubber with variable amount to study the effect of ceramic concentration on composites properties. Morphology of the composites was characterized by scanning electron microscopy, mechanical properties of the samples were studied by uniaxial tension, and their dielectric properties were compared through dielectric measurements. The results showed that at about 10 wt% of PZT loading dielectric permittivity is higher for this composite compared to those for composites with lower or even higher loading of PZT.
Maternal Cancer and Perception of Child Psychological Adjustment: The Role of Mother’s Anxiety, Depression, and Parenting Stress

Simple Summary In the last decades, the incidence of early-onset cancers, defined as cancers diagnosed in adults <50 years of age, has been rising in many countries. A diagnosis of cancer in a mother is a burden not only for the patient herself but also for the entire family system and particularly for her minor children. Despite its relevance, this topic has been little explored in the existing literature. The aim of our study was to analyze aspects associated with children’s psychosocial adjustment regarding maternal cancer. Following this general objective, we considered age and sex of the child and factors related to maternal cancer and mothers’ psychological adjustment. We found that the time passed since the diagnosis and the levels of mothers’ anxiety and parenting stress were associated with children’s difficulties. These findings may help health professionals to develop structured and tailored programs to support both mothers and children after an oncological diagnosis. Abstract A mother’s cancer diagnosis may have consequences for all family members, particularly for children, since it makes a parent less physically and emotionally available, with effects on the relationship with the child and his/her development. The main aim of this study was to analyze children’s psychological adjustment in the context of maternal cancer by considering factors related to the child (i.e., age and sex), the mother (psychological adjustment), and cancer (i.e., time elapsed from the diagnosis and current oncological treatment). Self-report questionnaires investigating mothers’ parenting stress, depression, anxiety, and children’s emotional and behavioral problems were administered to 124 mothers (mean age = 44.52 years; SD = 7.22) diagnosed with cancer. A hierarchical regression analysis highlighted that time since diagnosis and mothers’ anxiety and parenting stress accounted for almost 44% of the variance of the children’s difficulties. Maternal depression, current oncological treatment, and the child’s age and sex were not statistically significant. Higher mothers’ parenting stress and anxiety and a longer time elapsed since the first diagnosis predicted higher levels of children’s emotional and behavioral problems. These findings highlight the need to identify precursors of childhood distress in the context of maternal cancer and to develop structured programs to support both mothers and children.
Ternary Output Binary Neural Network With Zero-Skipping for MRAM-Based Digital In-Memory Computing

This brief presents a novel ternary output binary neural network (BNN) and an MRAM-based digital in-memory computing (IMC) architecture. The proposed ternary output BNN and IMC architecture is capable of 1) improving array efficiency by using only one bit-cell for one synaptic weight, 2) no accuracy loss due to its digital nature, 3) high energy efficiency by employing a zero-skipping scheme, and 4) the use of normal memory and deep learning applications due to minimized array modification. System simulations with a two-layer perceptron show that the ternary output BNN achieves 92.12% inference accuracy measured against the MNIST dataset, while the conventional BNN shows 80.8% accuracy. In addition, when the zero-skipping scheme was employed, the energy efficiency of the proposed architecture improved from 8.13 to 58.69 TOPS/W.
Sedimentation and erosion during the Late Carboniferous in the Dobrudzha Coal Field (North-East Bulgaria)

Sedimentation and erosion in the Dobrudzha coal field are regarded on the basis of the washing away between the formations and of formation thickness and composition. Some parameters of the existing lithostratigraphic division have been revized. A part of the formations is specific for the coal field and not for the basin. The distribution of the marsh-lake and fluviatile sedimentation is considered under subaerial delta conditions. Channel places have been established and a supposition is made for a higher rank channel to the west of the coal field. The basic transfer of terrigenous material has produced mainly from the south. The mechanism of inheritage of the places of marsh-lake sedimentation for a multilayer coal deposit is considered. For the field this corresponds best to the coal compaction and in the initial moment - to the compaction of a mightly volcaniclastic layer. The erosion phases are related to the transport of terrigenous material of a distant origin and to the increased presence of volcaniclastic material.
The Impact of Obesity Surgery on Serum Uric Acid in People With Severe Obesity: A Retrospective Study

Studies indicate an association between hyperuricemia (HUA) and metabolic syndrome risk factors. On the other hand, obesity is a major modifiable and independent risk factor for HUA and gout. However, evidence concerning the effects of bariatric surgery on serum uric acid levels is limited and not completely clarified. This retrospective study was carried out with 41 patients who underwent sleeve gastrectomy (n = 26) and Roux-en-Y gastric bypass (n = 15) from September 2019 to October 2021. Anthropometric, clinical, and biochemical data, including uric acid blood urea nitrogen and creatinine fasting blood sugar (FBS), serum triglyceride (TG), and serum cholesterol, high-density lipoprotein (HDL), low-density lipoprotein (LDL), were measured preoperatively and postoperative 3, 6 and 12 months. From baseline to 6 and 12 months, bariatric surgery resulted in a significant decrease in serum uric acid of patients with severe obesity (p < 0.001). The decreases in serum FBS, TG, and cholesterol of patients were significant during 6 and 12 months of follow-up (p < 0.05). However, the HDL increase of patients was not statistically significant in 6 and 12 months (p > 0.05). Besides, although patients’ serum level of LDL decreased significantly during the 6 months of follow-up (p = 0.007), it was not significant after 12 months (p = 0.092). Bariatric surgery significantly reduces serum uric acid levels. Therefore, it may be an effective supplementary therapy for lowering serum uric acid concentrations in morbidly obese patients.
Electromagnetic multi-Gaussian Schell-model beams

A recently introduced class of scalar multi-Gaussian Schell-model (MGSM) beams is extended to the electromagnetic domain. The realizability conditions and the beam conditions for the parameters of the new source are established. The behavior of the polarization properties of the beam on propagation in free space and in first-order imaging systems is investigated. The formation of the uniform polarization state in the central part of the transverse beam cross-section is explored in detail.
Optical metrology and optical non-destructive testing from the perspective of object characteristics

High precision optical metrology may be viewed from the perspective of the relevant object properties for optical measurement such as microstructure, surface gradient and geometrical complexity. We discuss high precision measurement methods and compare their suitability with respect to these object properties. We emphasize reflectometry and shearography as examples of two interesting techniques particularly suited for high precision optical metrology and extend the discussion to optical non destructive testing (NDT). In this context, reflectometry and shearography appear to be interesting techniques suitable for both optical metrology and NDT. We finally discuss the unique features of laser ultrasonic for NDT.