Miracle-dz/UniFAR-FTUs huggingface dataset:
Random sequential addition of hard spheres in high Euclidean dimensions.

Sphere packings in high dimensions have been the subject of recent theoretical interest. Employing numerical and theoretical methods, we investigate the structural characteristics of random sequential addition (RSA) of congruent spheres in d -dimensional Euclidean space R{d} in the infinite-time or saturation limit for the first six space dimensions (1< or =d < or =6) . Specifically, we determine the saturation density, pair correlation function, cumulative coordination number and the structure factor in each of these dimensions. We find that for 2< or =d <or =6 , the saturation density phi{s} scales with dimension as phi{s}=c{1}/2{d}+c{2}d/2{d} , where c{1}=0.202048 and c{2}=0.973872 . We also show analytically that the same density scaling is expected to persist in the high-dimensional limit, albeit with different coefficients. A byproduct of this high-dimensional analysis is a relatively sharp lower bound on the saturation density for any d given by phi{s}> or =(d+2)(1-S{0})2;{d+1} , where S{0}[0,1] is the structure factor at k=0 (i.e., infinite-wavelength number variance) in the high-dimensional limit. We demonstrate that a Palàsti-type conjecture (the saturation density in R{d} is equal to that of the one-dimensional problem raised to the d th power) cannot be true for RSA hyperspheres. We show that the structure factor S(k) must be analytic at k=0 and that RSA packings for 1< or =d< or =6 are nearly "hyperuniform. " Consistent with the recent "decorrelation principle," we find that pair correlations markedly diminish as the space dimension increases up to six. We also obtain kissing (contact) number statistics for saturated RSA configurations on the surface of a d -dimensional sphere for dimensions 2< or =d< or =5 and compare to the maximal kissing numbers in these dimensions. We determine the structure factor exactly for the related "ghost" RSA packing in R{d} and demonstrate that its distance from "hyperuniformity" increases as the space dimension increases, approaching a constant asymptotic value of 12 . Our work has implications for the possible existence of disordered classical ground states for some continuous potentials in sufficiently high dimensions.
Rolling Rotations for Recognizing Human Actions from 3D Skeletal Data

Recently, skeleton-based human action recognition has been receiving significant attention from various research communities due to the availability of depth sensors and real-time depth-based 3D skeleton estimation algorithms. In this work, we use rolling maps for recognizing human actions from 3D skeletal data. The rolling map is a well-defined mathematical concept that has not been explored much by the vision community. First, we represent each skeleton using the relative 3D rotations between various body parts. Since 3D rotations are members of the special orthogonal group SO3, our skeletal representation becomes a point in the Lie group SO3 × . × SO3, which is also a Riemannian manifold. Then, using this representation, we model human actions as curves in this Lie group. Since classification of curves in this non-Euclidean space is a difficult task, we unwrap the action curves onto the Lie algebra so3 × . × so3 (which is a vector space) by combining the logarithm map with rolling maps, and perform classification in the Lie algebra. Experimental results on three action datasets show that the proposed approach performs equally well or better when compared to state-of-the-art.
Comparison of similarity metrics for refactoring detection

Identifying refactorings in software archives has been an active research topic in the last decade, mainly because it is a prerequisite for various software evolution analyses (e.g., error detection, capturing intent of change, capturing and replaying changes, and relating refactorings and software metrics). Many of these techniques rely on similarity measures to identify structurally equivalent code, however, up until now the effect of this similarity measure on the performance of the refactoring identification algorithm is largely unexplored. In this paper we replicate a well-known experiment from Weißgerber and Diehl, plugging in three different similarity measures (text-based, AST-based, token-based). We look at the overlap of the results obtained by the different metrics, and we compare the results using recall and the computation time. We conclude that the different result sets have a large overlap and that the three metrics perform with a comparable quality.
Increased serum urea to creatinine ratio and its negative correlation with arterial pressure in canine babesiosis

The increase of the serum urea to creatinine ratio (UCR) was observed in dogs infected with Babesia canis. Previous studies have suggested that decrease of blood pressure can be one of the reasons for this phenomenon. In this work statistically significant increase of the UCR was observed in dogs with babesiosis. Comparison of the UCR between 23 azotaemic dogs and 25 non-azotaemic dogs infected with Babesia canis showed statistically significantly higher mean of the UCR in azotaemic dogs. Correlations between UCR and systolic, diastolic and mean arterial pressure (SAP, DAP and MAP) in 48 dogs infected with B. canis were negative (UCR and SAP: r = −0.3909; UCR and DAP: r = −0.3182; UCR and MAP: r = −0.3682) and statistically significant (p < 0.05). This result may indicate contribution of hypotension in the increase of the UCR in canine babesiosis. However, the correlations were not high, and there was no statistically significant correlation between UCR and arterial pressures in azotaemic dogs. Thus, it seems that decrease of blood pressure in dogs with babesiosis explains only partially the cause of increased UCR in infected dogs. The other authors suggested hyperureagenesis and myocardial injury as a potential reason for the increased UCR in canine babesiosis. Thus, further studies are needed to determine causes of increased UCR in dogs with babesiosis, especially on the connection between UCR changes and the concentrations of plasma cardiac troponins and ammonia, and the occurrence of occult blood on fecal examination.
MetaMuse: Metaphors for Expressive Instruments

We explore the role that metaphor plays in developing expressive devices by examining the MetaMuse system. MetaMuse is a prop-based system that uses the metaphor of rainfall to make the process of granular synthesis understandable. We discuss MetaMuse within a framework we call "transparency" that can be used as a predictor of the expressivity of musical devices. Metaphor depends on a literature, or cultural basis, which forms the basis for making transparent device mappings. In this context we evaluate the effect of metaphor in the MetaMuse system.
Does 'Illiquidity' Rather than 'Risk Aversion' Explain the Equity Premium Puzzle?: The Value of Endogenous Market Trading

Yes. I aim to establish empirically that the "equity premium" puzzle, with its 6% excess return per annum over Treasury bills for the last 100 years on the NYSE, can be explained once the value of endogenous stock market trading is incorporated into investor preferences. Within my framework, investors enjoy trading. According to my model, the "investor surplus" from trading liquid Treasury bills relative to illiquid equity is exactly compensated for by the expected equity premium. Observed transaction cost and liquidity differentials between equity and bills are consistent with the premium. Extensive tests are carried out on Australian and US NYSE data for 1955-98. The puzzle concerning the volatility of the stochastic discount factor also appears to be explained by trading behavior, which is of comparable volatility. Reasonably accurate estimates of transactions costs are extracted just from daily dividend yields and turnover. Transaction costs would need to be 400% higher to explain the premium by the "amortized spread", together with exogenous trading and habit formation. An ability to create unlimited wealth, implicit in some existing models, no longer applies. Additionally, the model explains the further 15-20% pa discount on illiquid "letter" stock.
Connection between the Accretion Disk and Superluminal Radio Jets and the Role of the Radio Plateau State in GRS 1915+105

We investigate the association between the accretion disk during the radio plateau state and the following superluminal relativistic radio jets with peak intensity varying from 200 to 1000 mJy observed over a period of 5 yr and present evidence of a direct accretion disk-jet connection in the microquasar GRS 1915+105. We have analyzed RXTE PCA/HEXTE X-ray data and have found that the accretion rate, accr, as inferred from the X-ray flux, is very high during the radio plateaux. We suggest that the accretion disk during the radio plateaux is always associated with radiation-driven wind, which is manifested in the form of enhanced absorption column density for X-rays and depleted IR emission. We find that the wind density increases with the accretion disk luminosity during the radio plateaux. The wind density is similar to the density of the warm absorber proposed in extragalactic active galactic nuclei (AGNs) and quasars. We suggest a simple model for the origin of superluminal relativistic jets. Finally, we discuss the implications of this work for Galactic microquasars and extragalactic AGNs and quasars.
Hot and cooled baryons in smoothed particle hydrodynamic simulations of galaxy clusters: physics and numerics

We discuss an extended set of Tree+SPH (smoothed particle hydrodynamics) simulations of the formation of clusters of galaxies, with the goal of investigating the interplay between numerical resolution effects and star formation/feedback processes. Our simulations were all carried out in a concordance A cold dark matter (ACDM) cosmology and include radiative cooling, star formation and energy feedback from galactic winds. The simulated clusters span the mass range M vir ≃ (0.1-2.3) x 10 15 h -1 M ⊙ , with mass resolution varying by several decades. At the highest achieved resolution, the mass of gas particles is m gas ≃ 1.5 x 10 7 h -1 M ⊙ , which allows us to resolve the virial region of a Virgo-like cluster with more than two million gas particles and with at least as many dark matter (DM) particles. Our resolution study confirms that, in the absence of an efficient feedback mechanism, runaway cooling leads to about 35 per cent of baryons in clusters to be locked up in long lived stars at our highest resolution, with no evidence of convergence. However, including feedback causes the fraction of cooled baryons to converge at about 15 per cent already at modest resolution, which is much closer to the typical values inferred from observational data. Feedback also stabilizes other gas-related quantities, such as radial profiles of entropy, gas density and temperature, against variations due to changes in resolution. Besides the effects of mass resolution, we also investigate the influence of the gravitational force softening length and that of numerical heating of the gas induced by two-body encounters between DM and lighter gas particles. We also show that simulations where more DM than gas particles are used, such that m gas ≃ m DM , show a significantly enhanced efficiency of star formation at z ≥ 3, but they accurately reproduce at z = 0 the fraction of cooled gas and the thermodynamic properties of the intracluster gas. Our results are important for establishing and delineating the regime of numerical reliability of the present generation of hydrodynamical simulations of galaxy clusters.
The Lie of the Land: Challenging Received Wisdom on the African Environment

Part One Present position: return to 1973 and colonial economic relations lost in Bretton Woods the power of the global superstate there are alternatives. Part Two Intractable contradictions: stabilization versus rebuilding donor rhetoric versus donor actions greed versus need. Part Three What way forward? : donors could practise what they preach, but they won't who benefits? can Mozambique be allowed its own vision?
Management Compensation and the Performance of Mutual Funds

This paper examines the mutual fund market as a market for the sale of management services using an unbalanced panel of 860 US equity funds over the 1976-1993 period. From among the performance measures for which investors have the necessary information to compute, we find that the Jensen measure best explains the change in market shares over time. It is found, however, that investors actually value the systematic component of risk more than indicated by the use of Jensen's performance measure. Our results also suggest that investors in load funds are less responsive to both components of performance (risk and return) than are investors in no-load funds. Investors, moreover, value recent past performance differently for funds with different attributes. An important result of the paper relating to the incentives provided with the widely used fixed-fee compensation schemes is that past fund performance influences individual investment decisions and hence future net asset values of funds, implying strong incentives for managers to increase their performance and by doing so, their compensation.
TWO-DIMENSIONAL BLAST-WAVE-DRIVEN RAYLEIGH–TAYLOR INSTABILITY: EXPERIMENT AND SIMULATION

This paper shows results from experiments diagnosing the development of the Rayleigh–Taylor instability with two-dimensional initial conditions at an embedded, decelerating interface. Experiments are performed at the Omega Laser and use ∼5 kJ of energy to create a planar blast wave in a dense, plastic layer that is followed by a lower density foam layer. The single-mode interface has a wavelength of 50 μm and amplitude of 2.5 μm. Some targets are supplemented with additional modes. The interface is shocked then decelerated by the foam layer. This initially produces the Richtmyer–Meshkov instability followed and then dominated by Rayleigh–Taylor growth that quickly evolves into the nonlinear regime. The experimental conditions are scaled to be hydrodynamically similar to SN1987A in order to study the instabilities that are believed to occur at the He/H interface during the blast-wave-driven explosion phase of the star. Simulations of the experiment were performed using the FLASH hydrodynamics code.
Limited Dengue Virus Replication in Field-Collected Aedes aegypti Mosquitoes Infected with Wolbachia

Introduction Dengue is one of the most widespread mosquito-borne diseases in the world. The causative agent, dengue virus (DENV), is primarily transmitted by the mosquito Aedes aegypti, a species that has proved difficult to control using conventional methods. The discovery that A. aegypti transinfected with the wMel strain of Wolbachia showed limited DENV replication led to trial field releases of these mosquitoes in Cairns, Australia as a biocontrol strategy for the virus. Methodology/Principal Findings Field collected wMel mosquitoes that were challenged with three DENV serotypes displayed limited rates of body infection, viral replication and dissemination to the head compared to uninfected controls. Rates of dengue infection, replication and dissemination in field wMel mosquitoes were similar to those observed in the original transinfected wMel line that had been maintained in the laboratory. We found that wMel was distributed in similar body tissues in field mosquitoes as in laboratory ones, but, at seven days following blood-feeding, wMel densities increased to a greater extent in field mosquitoes. Conclusions/Significance Our results indicate that virus-blocking is likely to persist in Wolbachia-infected mosquitoes after their release and establishment in wild populations, suggesting that Wolbachia biocontrol may be a successful strategy for reducing dengue transmission in the field.
GLI1 Is a Central Mediator of EWS/FLI1 Signaling in Ewing Tumors

The Ewing Sarcoma Family Tumors (ESFT) consist of the classical pathologic entities of Ewing Sarcoma and peripheral Primitive Neuroectodermal Tumor. Occurring largely in the childhood through young adult years, these tumors have an unsurpassed propensity for metastasis and have no defined cell of origin. The biology of these aggressive malignancies centers around EWS/FLI1 and related EWS/ETS chimeric transcription factors, which are largely limited to this tumor class. Much progress has been made in the identification of a network of loci whose expression is modulated by EWS/FLI1 and its congeners. To date, little progress has been made in reconstructing the sequence of direct and indirect events that produce this network of modulated loci. The recent identification of GLI1 as an upregulated target of EWS/ETS transcription factors suggests a target which may be a more central mediator in the ESFT signaling network. In this paper, we further define the relationship of EWS/FLI1 expression and GLI1 upregulation in ESFT. This relationship is supported with data from primary tumor specimens. It is consistently observed across multiple ESFT cell lines and with multiple means of EWS/FLI1 inhibition. GLI1 inhibition affects tumor cell line phenotype whether shRNA or endogenous or pharmacologic inhibitors are employed. As is seen in model transformation systems, GLI1 upregulation by EWS/FLI1 appears to be independent of Hedgehog stimulation. Consistent with a more central role in ESFT pathogenesis, several known EWS/FLI1 targets appear to be targeted through GLI1. These findings further establish a central role for GLI1 in the pathogenesis of Ewing Tumors.
Efficient Reduction of CO2 to CO with High Current Density Using in Situ or ex Situ Prepared Bi-Based Materials

The development of inexpensive electrocatalysts that can promote the reduction of CO2 to CO with high selectivity, efficiency, and large current densities is an important step on the path to renewable production of liquid carbon-based fuels. While precious metals such as gold and silver have historically been the most active cathode materials for CO2 reduction, the price of these materials precludes their use on the scale required for fuel production. Bismuth, by comparison, is an affordable and environmentally benign metal that shows promise for CO2 conversion applications. In this work, we show that a bismuth–carbon monoxide evolving catalyst (Bi-CMEC) can be formed under either aqueous or nonaqueous conditions using versatile electrodeposition methods. In situ formation of this thin-film catalyst on an inexpensive carbon electrode using an organic soluble Bi3+ precursor streamlines preparation of this material and generates a robust catalyst for CO2 reduction. In the presence of appropriate imidazolium based ionic liquid promoters, the Bi-CMEC platform can selectively catalyze conversion of CO2 to CO without the need for a costly supporting electrolyte. This inexpensive system can catalyze evolution of CO with current densities as high as jCO = 25–30 mA/cm2 and attendant energy efficiencies of ΦCO ≈ 80% for the cathodic half reaction. These metrics highlight the efficiency of Bi-CMEC, since only noble metals have been previously shown to promote this fuel forming half reaction with such high energy efficiency. Moreover, the rate of CO production by Bi-CMEC ranges from approximately 0.1–0.5 mmol·cm–2·h–1 at an applied overpotential of η ≈ 250 mV for a cathode with surface area equal to 1.0 cm2. This CO evolution activity is much higher than that afforded by other non-noble metal cathode materials and distinguishes Bi-CMEC as a superior and inexpensive platform for electrochemical conversion of CO2 to fuel.
The firing of hippocampal place cells predicts the future position of freely moving rats

Direct observation and automatic, video-based methods reveal that a large fraction of hippocampal pyramidal neurons recorded from freely moving rats behave as “place cells”; the firing of each place cell occurs almost exclusively when the rat is in a restricted part of its current environment. In earlier work, 2-dimensional firing distributions for place cells over the apparatus area were made under the assumption that the correct location for each spike was the animal's position at the instant that the spike was fired. Spatial firing distributions generated in this way often have a very simple structure, in which the single region of intense activity has a just one maximum, and where the rate decreases monotonically in all directions away from the maximum. We will refer to patterns of this sort as “ideal. ” We describe how the spatial firing pattern is altered by assigning spikes to positions earlier or later than the instant at which they were fired. Spatial firing distributions were generated for a range of constant displacements of the spike time-series against the position time series. Three quantitative measures were used to estimate the extent to which the spatial firing pattern at different “spike/position shifts” approximated the ideal pattern. The 3 measures are in agreement that spikes must precede the animal's position by about 120 msec for the spatial firing pattern to be closest to the ideal. These results suggest that hippocampal unit activity predicts the animal's future location on a short time scale.
Believing false political headlines and discrediting truthful political headlines: The interaction between news source trust and news content expectancy

An online survey experiment with 897 US adults demonstrated that the level of believability of news headlines about illegal immigration was for a large part the result of an interaction of perceptions about news source trust and news content expectancy. This study was a second, successful attempt to test a theoretical news content believability model to explain correct and wrongful perceptions of reality. A better understanding of how people assess the believability of news would allow educators to fine-tune media literacy modules. There is certainly a need for enhanced media literacy as the participants of the experiment demonstrated that many of them believed news headlines about illegal immigration that contain misinformation.
The effects of gluteus muscle strengthening exercise and lumbar stabilization exercise on lumbar muscle strength and balance in chronic low back pain patients

[Purpose] The aim of this study was to examine the effects of exercise to strengthen the muscles of the hip together with lumbar segmental stabilization exercise on the lumbar disability index, lumbar muscle strength, and balance. [Subjects and Methods] This study randomly and equally assigned 40 participants who provided written consent to participate in this study to a lumbar segmental stabilization exercise plus exercise to strengthen the muscles of the gluteus group (SMG + LES group) and a lumbar segmental stabilization exercise group. [Results] Each evaluation item showed a statistically significant effect. [Conclusion] Clinical application of exercise in this study showed that lumbar segmental stabilization exercise plus exercise to strengthen the muscles of the gluteus resulted in a greater decrease in low back pain disability index and increase in lumbar muscle strength and balance ability than lumbar segmental stabilization exercise in chronic low back pain patients receiving the exercise treatments during the same period.