Miracle-dz/UniFAR-FTUs huggingface dataset:
General relativistic effects on Hill stability of multibody systems: Stability of three-body systems containing a massive black hole

We study the effects of general relativistic gravity on the Hill stability, that is, the stability of a multi-body system against a close approach of one orbit to another, which has been hitherto studied mainly in Newtonian mechanics and applied to planetary systems. We focus in this paper on the three-body problem and extend the Newtonian analyses to the general relativistic regime in the post-Newtonian approximation. The approximate sufficient condition for the relativistic Hill stability of three-body systems is derived analytically and its validity and usefulness are confirmed numerically. In fact, relativity makes the system more unstable than Newtonian mechanics in the sense of the Hill stability as expected by our theoretical prediction. The criterion will be useful to analyze the results of large-scale N-body simulations of dense environments, in which the stability of three-body sub-systems is important.
On the Investigation of the Closure Relations for Gamma-Ray Bursts Observed by Swift in the Post-plateau Phase and the GRB Fundamental Plane

Gamma-ray Bursts (GRBs) are the most explosive phenomena in the universe after the big bang. A large fraction of GRB lightcurves (LCs) shows X-ray plateaus. We perform the most comprehensive analysis of all GRBs (with known and unknown redshifts) with plateau emission observed by The Neil Gehrels Swift Observatory from its launch until 2019 August. We fit 455 LCs showing a plateau and explore whether these LCs follow closure relations, relations between the temporal and spectral indices of the afterglow, corresponding to two distinct astrophysical environments and cooling regimes within the external forward shock (ES) model, and find that the ES model works for the majority of cases. The most favored environments are a constant-density interstellar or wind medium with slow cooling. We also confirm the existence of the fundamental plane relation between the rest-frame time and luminosity at the end of the plateau emission and the peak prompt luminosity for this enlarged sample, and test this relation on groups corresponding to the astrophysical environments of our known redshift sample. The plane becomes a crucial discriminant corresponding to these environments in terms of the best-fitting parameters and dispersions. Most GRBs for which the closure relations are fulfilled with respect to astrophysical environments have an intrinsic scatter σ compatible within 1σ of that of the “Gold” GRBs, a subset of long GRBs with relatively flat plateaus. We also find that GRBs satisfying closure relations indicating a fast cooling regime have a lower σ than ever previously found in literature.
Time fractional stochastic differential equation with random jumps

We prove the well-posedness of variable-order time fractional stochastic differential equations with jumps. Using a truncating argument, we do not assume any condition on the initial distribution and the integrability of the large jump term even though the solution is non-Markovian. To get moment estimates, some extra assumptions are needed. As an application of moment estimates, we prove the Holder regularity of the solutions.
Communicative Visualizations as a Learning Problem

Significant research has provided robust task and evaluation languages for the analysis of exploratory visualizations. Unfortunately, these taxonomies fail when applied to communicative visualizations. Instead, designers often resort to evaluating communicative visualizations from the cognitive efficiency perspective: “can the recipient accurately decode my message/insight? ” However, designers are unlikely to be satisfied if the message went ‘in one ear and out the other. ’ The consequence of this inconsistency is that it is difficult to design or select between competing options in a principled way. The problem we address is the fundamental mismatch between how designers want to describe their intent, and the language they have. We argue that visualization designers can address this limitation through a learning lens: that the recipient is a student and the designer a teacher. By using learning objectives, designers can better define, assess, and compare communicative visualizations. We illustrate how the learning-based approach provides a framework for understanding a wide array of communicative goals. To understand how the framework can be applied (and its limitations), we surveyed and interviewed members of the Data Visualization Society using their own visualizations as a probe. Through this study we identified the broad range of objectives in communicative visualizations and the prevalence of certain objective types.
Role of Water Soluble Contrast in Management of Post- Operative Adhesive Small Bowel Obstruction

1 Associate Professor, Department of Surgery, N.S. C.B. Medical College and Hospital, Jabalpur, India Contact: + 91-9826178486, Email: silodiaashu@gmail.com 2 Senior Resident, Department of Surgery, N.S. C.B. Medical College and Hospital, Jabalpur, India 3 N.S. C.B Medical College and Hospital, Jabalpur, India Corresponding Author Dr Chandan Tiwari Contact: + 91-8085201097, Email: drchandan80@gmail.com Abstract This study “Role of water soluble contrast in management of post-operative small bowel obstruction” was conducted in Department of surgery N.S. C.B. medical college between August 2013 to October 2014 to assess the therapeutic role of water soluble contrast in post operative adhesion induced small bowel obstruction in relieving obstruction. Total of 17 patients were included in study in age group 30-50yrs with majority of males. These patients were having main complaints of abdominal pain, distention vomiting, not passing flatus and motion. During diagnostic tests X-ray abdomen showed multiple bowel loops and air fluid levels.13 patients were given gastrograffin and continued in conservative management however 4 were referred for surgery. In majority of patients (46%) Ryle’s tube aspiration stopped within 24 hrs and bowel sound reappeared in first 2 days of admission (76%) on giving gastrograffin. Also 65% passed flatus and motion within 24 hrs however mean hospital stay was 8.85 days in gastrograffin treated patients compared to 16.5 days in surgically treated patients. Thus by result of this study it can be emphasised that Gastrograffin which is used as contrast media for CT scan purpose as diagnostic support can also be tried as therapeutic agent in patients with small bowel obstruction due to post-operative adhesions and have significant outcome both clinically and also statistically. Hence it can be recommended that with a specific selection criteria for patients and high range of vigilance and suspicion Gastrograffin can be used therapeutically and safely in patients of small bowel obstruction specifically due to post op adhesions to get relief from obstruction and with an advantage that if it fails then CT scan can use this dose as contrast for imaging and confirm obstruction and can be proceeded for surgery as per need.
Exotic Higgs decays (and long-lived particles) at future colliders

The theoretical motivations and the large breadth of signatures for exotic Higgs decays have been thoroughly reviewed in Ref. [1]. They were first considered as a discovery mode of new physics in the context of a hidden valley scenario [2–4]. In the last few years, exotic Higgs decays have been revisited, as they arise ubiquitously in models of neutral naturalness, such as twin Higgs [5], folded supersymmetry [6], fraternal twin Higgs [7], hyperbolic Higgs [8], and singlet scalar top partners [9]. A simple proxy model for hidden valleys is obtained via a Higgs portal set-up,
BBAA VI International Colloquium on:

The non-stationary flow structure around a rectangular cylinder immersed in a water steady flow is analyzed through topological analysis of time resolved PIV velocity fields. The phenomenon considered is characterized by the presence of large scale eddies, which are the main responsible of the hydrodynamic loading on the cylinder. In order to investigate the correlation between the hydrodynamic loading and the flow structures, we have identified and measured the motion of large scale eddies generated by the flow separations through the tracking of their vortex centres. The leading and trailing vortices have been characterized by calculating their convection velocity and shedding frequency.
Optimal Reference Selection for Random Access in Predictive Coding Schemes

Data acquired over long periods of time like High Definition (HD) videos or records from a sensor over long time intervals, have to be efficiently compressed, to reduce their size. The compression has also to allow efficient access to random parts of the data upon request from the users. Efficient compression is usually achieved with prediction between data points at successive time instants. However, this creates dependencies between the compressed representations, which is contrary to the idea of random access. Prediction methods rely in particular on reference data points, used to predict other data points. The placement of these references balances compression efficiency and random access. Existing solutions to position the references use ad hoc methods. In this paper, we study this joint problem of compression efficiency and random access. We introduce the storage cost as a measure of the compression efficiency and the transmission cost for the random access ability. We express the reference placement problem that trades storage with transmission cost as an integer linear programming problem. Considering additional assumptions on the sources and coding methods reduces the complexity of the search space of the optimization problem. Moreover, we show that the classical periodic placement of the references is optimal, when the encoding costs of each data point are equal and when requests of successive data points are made. In this particular case, a closed-form expression of the optimal period is derived. Finally, the proposed optimal placement strategy is compared with an ad hoc method, where the references correspond to sources where the prediction does not help reducing significantly the encoding cost. The proposed optimal algorithm shows a bit saving of −20% with respect to the ad hoc method.
FAKIR: An algorithm for revealing the anatomy and pose of statues from raw point sets

3D acquisition of archaeological artefacts has become an essential part of cultural heritage research for preservation or restoration purpose. Statues, in particular, have been at the center of many projects. In this paper, we introduce a way to improve the understanding of acquired statues representing real or imaginary creatures by registering a simple and pliable articulated model to the raw point set data. Our approach performs a Forward And bacKward Iterative Registration (FAKIR) which proceeds joint by joint, needing only a few iterations to converge. We are thus able to detect the pose and elementary anatomy of sculptures, with possibly non realistic body proportions. By adapting our simple skeleton, our method can work on animals and imaginary creatures.
The crystallography of Pluto

Maynard-Casely and co-workers [IUCrJ (2020). 7, 844–851. ] investigate two of Pluto’s most abundant minerals with neutron diffraction. The new results will be key to understanding the geology of our distant neighbour and represent a significant advance in the emerging field of small-molecule geology.
A matter of time and proportion: the availability of phosphorus-rich phytoplankton influences growth and behavior of copepod nauplii

Abstract Although consumers may use selective feeding to cope with suboptimal resource quality, little work has examined the mechanisms that underlie selective feeding, the efficiency of this behavior or its influence on consumer growth rate. Furthermore, a consumer’s exposure to suboptimal resources may also influence the consumer’s behavior and life history, including growth rate. Here, we studied how the availability of P-rich and P-poor phytoplankton influences the growth and behavior of copepod nauplii. We observed that copepod nauplii preferentially feed on P-rich prey. We also found that even relatively short exposure to P-rich phytoplankton yielded higher nauplii growth rates, whereas the presence of P-poor phytoplankton in a mixture impaired growth. Overall, we observed that swimming speed decreased with increasing phytoplankton P-content, which is a behavioral adjustment that may improve utilization of heterogeneously distributed high-quality food in the field. Based on our results, we propose that the optimal prey C: P ratio for copepod nauplii is very narrow, and that deviations from this optimum have severe negative consequences for growth.
Vanadate treatment rapidly improves glucose transport and activates 6-phosphofructo-l-kinase in diabetic rat intestine

Summary The effect of oral vanadate on intestinal sodium-dependent glucose transport and 6-phosphofructo-l-kinase (EC 2.7.1.11) activity was examined in male Sprague-Dawley rats following a 30-day period of non-treated streptozotocin-induced diabetes. Non-treated diabetic rats were hyperglycaemic and demonstrated increased intestinal sodium-dependent glucose transport and Na,K-ATPase activity compared with controls. These increases were associated with a significant decrease in the total activity and activity ratios (activity at 0.5 mmol/1 fructose 6-phosphate at pH 7.0/activity at pH 8.0) of intestinal 6phosphofructo-l-kinase and decreased levels of fructose 2,6-bisphosphate. Supplementation of drinking water with vanadate (0.5 mg/ml) resulted in a rapid decline in blood glucose levels to a slightly hyperglycaemic level. Jejunal glucose transport and Na,KATPase activity were normalized after 48 h of vanadate treatment. In contrast, ileal glucose transport was significantly reduced 12 h following beginning vanadate treatment even though Na,K-ATPase activity did not normalize until 36 h later. K m was significantly decreased in both jejunum and ileum by vanadate treatment indicating an increased affinity of the sodium-dependent intestinal glucose transporter for glucose. 6-phosphofructo-l-kinase total activity and susceptibility to ATP inhibition was completely restored after 12 h of vanadate treatment. This increase was associated with a rise in fructose 2,6-bisphosphate levels. Fasting rats for 12 h had no effect on glucose transport or 6-phosphofructo-l-kinase activity, indicating the anorectic effect of vanadate was not responsible for changes in either parameter. In contrast, cycloheximide prevented both the rise in 6phosphofructo-l-kinase activity and the rise in fructose 2,6-bisphosphate levels, and the subsequent reduction in glucose transport, indicating a requirement for protein synthesis. The removal of vanadate resulted in an immediate return to pre-treatment blood glucose levels. In contrast, intestinal glucose transport and 6-phosphofructo-l-kinase activity remained at treatment levels up until 72 h, indicating that oral vanadate treatment can have prolonged beneficial effects on intestinal function. In conclusion, the treatment of streptozotocin-induced diabetic rats with oral vanadate results in an activation of 6-phosphofructo-l-kinase coupled with a normalization of intestinal sodium-dependent glucose transport. Vanadate may thus have a beneficial effect on intestinal function and may prove useful as oral adjunctive diabetic therapy. [Diabetologia (1995) 38: 403-412]
Design, synthesis, and evaluation of 1, 4-benzodioxan-substituted chalcones as selective and reversible inhibitors of human monoamine oxidase B

Abstract The inhibition of monoamine oxidase B (MAO-B) could be an effective approach for the treatment of various neurological disorders. In this study, a series of 1, 4-benzodioxan-substituted chalcone derivatives were designed, synthesised and evaluated for their inhibitory activity against human MAO-B (hMAO-B). The majority of these compounds showed inhibitory activity and high selectivity. The most potent compound, (E)-1-(3-bromo-4-fluorophenyl)-3-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)prop-2-en-1-one (22), exhibited an IC50 of 0.026 µM with a selectivity index greater than 1538. Kinetics and reversibility studies confirmed that the representative active compounds acted as competitive and reversible inhibitors of hMAO-B. The enzyme-inhibitor interactions were investigated by molecular docking studies and the rationale was provided. As these potent hMAO-B inhibitors exhibited low neurotoxicity and possessed promising drug-like properties, we believe that these active compounds could be further investigated as potential drug candidates for future in vivo studies.
Alignment of Cortical Microtubules by Anisotropic Wall Stresses

Anisotropic mechanical forces exist in the walls of all turgid plant cells except those of spherical unicells. These forces potentially offer the cell important directional information regarding its major and minor axes, and the more complicated force patterns expected in multicellular organs could offer location-specific information. A mechanism is proposed to measure directional forces in the wall as deformations (strain) of molecules associated with cellulose microfibrils and transmit the information across the plasma membrane to orient cortical microtubules. Because microtubules in turn orient the synthesis of the cellulose microfibrils that determine the direction of future cell expansion, a feedback loop is established relating future cell shape to present cell shape and cell position. The loop can provide positive feedback to magnify a small asymmetry in shape, to reinforce an existing growth axis in a cylindrical cell or, by modification of the proteins postulated to convey directional information between wall and cytoplasm, the loop can be broken and the same directional information used to establish a new orientation for cortical microtubules. In this way, modification of a single protein replaces a transverse microtubule array with a helical one.
Monitoring Sokoban Problem Solving: What a Case Study Implies for Metacognitive Support for Game-based Problem Solving?

This case study analyzes the cognitive process underlying a teenager’s Sokoban problem solving within the framework of major learning theories. The effects of metacognitive inquiries and self-correction on latency in completing the game were examined. A major finding was that the gamer employed both forward-and backward-working strategies and tended to use a start-all-over-again strategy when faced with an impasse. Implications that support a game-based problem solving approach were also discussed.
IMAGE-DERIVED CAROTID ARTERIAL INPUT FUCTION AS AN INVERSE PROBLEM IN KINETIC MODELING OF [18F]2-FLUORO-2 DEOXY-D-GLUCOSE(FDG) IN ALZHEIMER’S DISEASE

A two-tissue reversible compartment model is solved by Laplace transform method for kinetic modeling of [18F]2-fluor-2deoxy-D-glucose(FDG), in order to quantify amyloid in Positron Emission Tomography(PET) image. A reverse engineer technic is applied to determine the input function(Ca(t)), that represents the time-course of tracer concentration arterial blood. Ca(t) is obtained by non-linear regression, and, noninvasively from the time–activity curve in a carotid volume of interest(VOI). After calculating a convolution integral, the analytical solution is completely described.
Global stability of traveling waves for delay reaction-diffusion systems without quasi-monotonicity

This article concerns the global stability of traveling waves of a reaction-diffusion system with delay and without quasi-monotonicity. We prove that the traveling waves (monotone or non-monotone) are exponentially stable in \(L^\infty(\mathbb{R})\) with the exponential convergence rate \(t^{-1/2}e^{-\mu t}\) for some constant \(\mu>0\). We use the Fourier transform and the weighted energy method with a suitably weight function. For more information see https://ejde.math.txstate.edu/Volumes/2020/46/abstr.html
The Study of Women Entrepreneurship among theMiddle Income Groups in Aizawl

Many Literatures has shown how female entrepreneurs are immensely affected by different facets like the traditional, sociocultural and economic context in which they function. Most of the time, especially in a close knitted society likesours they are required to work around patriarchal barriers with many domestic responsibilities. A qualitative research approach is applied in this study to explore the different drives and impact, that is, social and economic aspects of female entrepreneurs, using online questionnaires for interpretation. We will analyse why they have chosen this field of work, look at the problems and constraints faced by them and their stand in the social structure as they take the risks of entering this field, and give suggestions as well.
Fe b 20 05 Mesoscopic modeling of heterogeneous boundary conditions for microchannel flows

We present a mesoscopic model of the fluid-wall interactions for flows in microchannel geometries. We define a suitable implementation of the boundary conditions for a discrete version of the Boltzmann equations describing a wall-bounded single phase fluid. We distinguish different slippage properties on the surface by introducing a slip function, defining the local degree of slip for mesoscopic molecules at the boundaries. The slip function plays the role of a renormalizing factor which incorporates, with some degree of arbitrariness, the microscopic effects on the mesoscopic description. We discuss the mesoscopic slip properties in terms of slip length, slip velocity, pressure drop reduction (drag reduction), and mass flow rate in microchannels as a function of the degree of slippage and of its spatial distribution and localization, the latter parameter mimicking the degree of roughness of the ultra-hydrophobic material in real experiments. We also discuss the increment of the slip length in the transition regime, i.e. at O(1) Knudsen numbers. Finally, we compare our results with Molecular Dynamics investigations of the dependency of the slip length on the mean channel pressure and local slip properties (Cottin-Bizonne et al. 2004) and with the experimental dependency of the pressure drop reduction on the percentage of hydrophobic material deposited on the surface – Ou et al. (2004).
Probing the photonic band structure by resonant responsivity enhancement in QWIPs

The implementation of a quantum well infrared photodetector in a planar photonic crystal yields an unpolarized detector capable to detect surface incident radiation. The incoupling at normal incidence can be referred to a flat band region at the Γ point close to the geometrically tunable second order Bragg condition. At non-normal incidence the angular dependence of the response spectra enables to construct the photonic band structure above the light line. The measurement directly relays on the intracavity absorption of TM polarized photonic crystal modes and therefore represents a very realistic test object for intersubband devices. With this method we performed a polarization dependent band structuring mapping which showed a strong polarization mixing for the surfaceplasmon waveguide used.