Miracle-dz/UniFAR-FTUs huggingface dataset:
HADES RV Programme with HARPS-N at TNG - III. Flux-flux and activity-rotation relationships of early-M dwarfs

Context. Understanding stellar activity in M dwarfs is crucial for the physics of stellar atmospheres and for ongoing radial velocity exoplanet programmes. Despite the increasing interest in M dwarfs, our knowledge of the chromospheres of these stars is far from being complete. Aims. We test whether the relations between activity, rotation, and stellar parameters and flux-flux relationships previously investigated for main-sequence FGK stars and for pre-main-sequence M stars also hold for early-M dwarfs on the main-sequence. Although several attempts have been made so far, here we analyse a large sample of stars undergoing relatively low activity. Methods. We analyse in a homogeneous and coherent way a well-defined sample of 71 late-K/early-M dwarfs that are currently being observed in the framework of the HArps-N red Dwarf Exoplanet Survey (HADES). Rotational velocities are derived using the cross-correlation technique, while emission flux excesses in the Ca ii H & K and Balmer lines from H α up to H ϵ are obtained by using the spectral subtraction technique. The relationships between the emission excesses and the stellar parameters (projected rotational velocity, effective temperature, kinematics, and age) are studied. Relations between pairs of fluxes of different chromospheric lines (flux-flux relationships) are also studied and compared with the literature results for other samples of stars. Results. We find that the strength of the chromospheric emission in the Ca ii H & K and Balmer lines is roughly constant for stars in the M0-M3 spectral range. Although our sample is likely to be biased towards inactive stars, our data suggest that a moderate but significant correlation between activity and rotation might be present, as well as a hint of kinematically selected young stars showing higher levels of emission in the calcium line and in most of the Balmer lines. We find our sample of M dwarfs to be complementary in terms of chromospheric and X-ray fluxes with those of the literature, extending the analysis of the flux-flux relationships to the very low flux domain. Conclusions. Our results agree with previous works suggesting that the activity-rotation-age relationship known to hold for solar-type stars also applies to early-M dwarfs. We also confirm previous findings that the field stars which deviate from the bulk of the empirical flux-flux relationships show evidence of youth.
HADES RV Programme with HARPS-N at TNG

Aims. We extend the relationship between X-ray luminosity (Lx) and rotation period (Prot) found for main-sequence FGK stars, and test whether it also holds for early M dwarfs, especially in the non-saturated regime (Lx ∝ Prot−2) which corresponds to slow rotators. Methods. We use the luminosity coronal activity indicator (Lx) of a sample of 78 early M dwarfs with masses in the range from 0.3 to 0.75 M⊙ from the HArps-N red Dwarf Exoplanet Survey (HADES) radial velocity (RV) programme collected from ROSAT and XMM-Newton. The determination of the rotation periods (Prot) was done by analysing time series of high-resolution spectroscopy of the Ca II H & K and Hα activity indicators. Our sample principally covers the slow rotation regime with rotation periods from 15 to 60 days. Results. Our work extends to the low mass regime the observed trend for more massive stars showing a continuous shift of the Lx∕Lbol versus Prot power law towards longer rotation period values, and includes a more accurate way to determine the value of the rotation period at which the saturation occurs (Psat) for M dwarf stars. Conclusions. We conclude that the relations between coronal activity and stellar rotation for FGK stars also hold for early M dwarfs in the non-saturated regime, indicating that the rotation period is sufficient to determine the ratio Lx∕Lbol.
A Nested-LES Approach for Computation of High-Reynolds Number, Equilibrium and Non-Equilibrium Turbulent Wall-Bounded Flows.

A Nested-LES Approach for Computation of High-Reynolds Number, Equilibrium and Non-Equilibrium Turbulent Wall-Bounded Flows by Yifeng Tang Chair: Rayhaneh Akhavan Computation of high Reynolds number, complex, non-equilibrium wall-bounded turbulent flows presents a major challenge for large-eddy simulation (LES), due to the stringent resolution requirements in the near-wall region in conventional LES, and the inability of existing wall models to accurately capture the near-wall dynamics in flows involving complex physics in the near-wall region. In this study, a novel nested-LES approach for computation of high Reynolds number, equilibrium and non-equilibrium, wall-bounded turbulent flows is proposed. The method couples well-resolved LES in a minimal flow unit with coarse-resolution LES in the full domain to provide highfidelity simulations of the flow physics in both the inner and outer layers. The coupling between the two domains of nested-LES is achieved by dynamically renormalizing the velocity fields in each domain at each time-step during the course of the simulation to match the wall-normal profiles of the single-time ensemble-averaged kinetic energies of the components of mean and fluctuating velocities in both domains to those of the minimal flow unit in the inner layer, and to those of the full domain in the outer
SOI-KF: Distributed Kalman Filtering With Low-Cost Communications Using The Sign Of Innovations

We derive and analyze distributed state estimators of dynamical stochastic processes, whereby low communication cost is effected by requiring the transmission of a single bit per observation. Following a Kalman filtering (KF) approach, we develop recursive algorithms for distributed state estimation based on the sign of innovations (SOI). Even though SOI-KF can afford minimal communication overhead, we prove that in terms of performance and complexity it comes very close to the clairvoyant KF which is based on the analog-amplitude observations. Reinforcing our conclusions, we show that the SOI-KF applied to distributed target tracking based on distance only observations yields accurate estimates at low communication cost
The Open Access Israeli Journal of Aquaculture – Bamidgeh

Experiments were carried out on pike perch (Sander lucioperca L.) to find a method for stripping sperm without contamination by urine, to determine sperm concentration, and to fertilize large batches of eggs with cryopreserved sperm. Induced spawning technology for pike perch, an important predator fish species in Hungarian and central-eastern European pond aquaculture, has been developed only recently. Sperm cryopreservation can be an important tool for several reasons including the simplification of hatchery work and long-term preservation of genomes of males with high genetic value. In the present study, sperm was stripped without urine contamination, improving sperm quality, and large amounts of eggs were fertilized using 0.25 ml sperm, resulting in hatching percentages of 55±3% for 30-g batches of eggs and 87% for a 50-g batch. Introduction Pike perch (Sander lucioperca L) is one of the highest priced farmed predator fish species in Hungary. Several studies have been published on induced spawning in this species (Schlumberger and Proteau, 1996; Zakes, 2007). Hatchery propagation results in more efficient fry production than traditional pond spawning where broodfish spawn in nests. Cryopreservation of sperm ensures longterm conservation of male gametes. It also enables reducing the number of males in the broodstock so that farmers can concentrate on the more problematic females. So far, the few studies published on cryopreservation of percid sperm involve the North American yellow perch (Perca flavescens; Ciereszko et al., 1993), the walleye (S. vitreus; Moore, 1987), and the European species of perch (Perca fluviatilis; Horvath and Urbanyi, 2001) and zingel (Zingel zingel; Keresztessy et al., 2003). The results of these studies, however, are not sufficient for developing a general method that can be applied to pike perch sperm. In our earlier study, the effects of extenders, cryoprotectants, and sperm dilution ratios were tested on sperm of pike perch and Volga pike perch (S. volgensis), a closely related species (Bokor et al., 2007). Motility of * Corresponding author. E-mail: bokor.zoltan@mkk.szie. hu
The Open Access Israeli Journal of Aquaculture – Bamidgeh

An 8-week feeding trial was conducted to investigate the effects of dietary lipid levels on growth, antioxidant capacity, hematological characteristics, and lipid metabolism of juvenile black seabream (Acanthopagrus schlegelii) of initial weight 4.33 ± 0.01 g. Three isonitrogenous diets were formulated to contain lipid levels of 36.8 (Diet 1, control group), 82.9 (Diet 2) and 136g/kg (Diet 3). After the feeding trial, fish fed high lipid levels (Diet 2 and Diet 3) showed higher growth performance and feed efficiency compared to low level (Diet 1) group. The hematological characteristics were significantly higher in Diet 3 than Diet 1. Fish fed Diet 3 had significantly higher malondialdehyde (MDA) content and catalase (CAT) activity in serum than Diet 1 group. Conversely, the hepatic glutathione peroxidase (GSH-Px) and fatty acid synthase (Fas) activity were significantly lower in fish fed Diet 3. Overall, this study indicated that juvenile black seabream could adapt high lipid diet (82.9~136g/kg) by regulating growth, hematological characteristics, and lipid metabolism. Published as an open-access journal by the Society of Israeli Aquaculture & Marine Biotechnology (SIAMB). To read papers free of charge, please register online at http://www.aquaculturehub. org/group/israelijournalofaquacultur ebamidgehija The sale of IJA papers is strictly forbidden
The Benefit of Group Sparsity

This paper develops a theory for group Lasso using a concept called strong group sparsity. Our result shows that group Lasso is superior to standard Lasso for strongly group-sparse signals. This provides a convincing theoretical justification for using group sparse regularization when the underlying group structure is consistent with the data. Moreover, the theory predicts some limitations of the group Lasso formulation that are confirmed by simulation studies.
The Role of Advanced Glycation Endproducts and Glyoxalase I in Diabetic Peripheral Sensory Neuropathy

Diabetic neuropathy is the most common and debilitating complication of diabetes mellitus with over half of all patients developing altered sensation as a result of damage to peripheral sensory neurons. Hyperglycemia results in altered nerve conduction velocities, loss of epidermal innervation, and the development of painful or painless signs and symptoms in the feet and hands. Current research has been unable to determine if a patient will develop insensate or painful neuropathy or be protected from peripheral nerve damage all together. One of the mechanisms that has been recognized to have a role in the pathogenesis of sensory neuron damage is the process of reactive dicarbonyls forming advanced glycation endproducts (AGEs) as a direct result of hyperglycemia. The glyoxalase system, composed of the enzymes glyoxalase I (GLO1) and glyoxalase II, is the main detoxification pathway involved in breaking down toxic reactive dicarbonyls before producing carbonyl stress and forming AGEs on proteins, lipids, or nucleic acids. This review discusses AGEs, GLO1, their role in diabetic neuropathy, and potential therapeutic targets of the AGE pathway.
Becker Digital

Alternative splicing of HIV-1 mRNAs increases viral coding potential and controls the levels and timing of gene expression. HIV-1 splicing is regulated in part by heterogeneous nuclear ribonucleoproteins (hnRNPs) and their viral target sequences, which typically repress splicing when studied outside their native viral context. Here, we determined the location and extent of hnRNP binding to HIV-1 mRNAs and their impact on splicing in a native viral context. Notably, hnRNP A1, hnRNP A2, and hnRNP B1 bound to many dispersed sites across viral mRNAs. Conversely, hnRNP H1 bound to a few discrete purine-rich sequences, a ﬁnding that was mirrored in vitro . hnRNP H1 depletion and mutation of a prominent viral RNA hnRNP H1 binding site decreased the use of splice acceptor A1, causing a deﬁcit in Vif expression and replicative ﬁtness. This quantitative framework for determining the regulatory inputs governing alternative HIV-1 splicing revealed an unexpected splicing enhancer role for hnRNP H1 through binding to its target element. IMPORTANCE Alternative splicing of HIV-1 mRNAs is an essential yet quite poorly understood step of virus replication that enhances the coding potential of the viral genome and allows the temporal regulation of viral gene expression. Although HIV-1 constitutes an important model system for general studies of the regulation of alternative splicing, the inputs that determine the efﬁciency with which splice sites are utilized remain poorly deﬁned. Our studies provide an experimental framework to study an essential step of HIV-1 replication more comprehensively and in much greater detail than was previously possible and reveal novel cis -acting elements regulating HIV-1 splicing.
Implementasi Framework Laravel dalam Sistem Reservasi pada Restoran Cindelaras Kota Medan

Restoran merupakan salah satu jenis usaha pangan dilengkapi dengan penyajian dan penjualan makanan dan minuman. Reservasi merupakan aktifitas memesan tempat atau barang, reservasi dan restoran sering dikaitkan karena pemesanan tempat dan menu mempermudah pelanggan restoran sehingga pilihan reservasi menjadi pilihan yang tepat untuk pelanggan yang ingin memesan terlebih dahulu dan akan datang setelahnya. Restoran Ayam Penyet Cindelaras merupakan salah satu restoran yang populer bagi masyarakat jika ingin melakukan reservasi, masyarakat atau pelanggan yang melakukan reservasi pada restoran cindelaras masih menggunakan cara manual, yaitu dengan mendatangi restoran. Hal ini masih belum efektif dan efisien mengingat tidak semua pelanggan yang melakukan reservasi dapat meluangkan waktu untuk sekedar datang melakukan reservasi. Oleh sebab itu, diperlukan sebuah sistem informasi pemesanan yang mampu mewujudkan reservasi yang efektif dan efisien, penerapan sistem ini menggunakan pengembangan Waterfall dan menggunakan tools UML dibangun dengan bahasa pemograman PHP serta MySQL sebagai database server dan Laravel sebagai frameworknya. Sistem Informasi Layanan Pemesanan ini menyajikan cara reservasi tempat dan menu yang ada pada restoran dan cara pembayaran melalui money transfer / m-banking.
The Galaxy Count Correlation Function in Redshift Space Revisited

In the near future, cosmology will enter the wide and deep galaxy survey era, enabling high-precision studies of the large-scale structure of the universe in three dimensions. To test cosmological models and determine their parameters accurately, it is necessary to use data with exact theoretical expectations expressed in observational parameter space (angles and redshift). The data-driven, galaxy number count fluctuations on redshift shells can be used to build correlation functions on and between shells to probe the baryonic acoustic oscillations and distance-redshift distortions, as well as gravitational lensing and other relativistic effects. To obtain a numerical estimation of from a cosmological model, it is typical to use either a closed form derived from a tripolar spherical expansion or to compute the power spectrum and perform a Legendre polynomial expansion. Here, we present a new derivation of a closed form using the spherical harmonic expansion and proceeding to an infinite sum over multipoles thanks to an addition theorem. We demonstrate that this new expression is perfectly compatible with the existing closed forms but is simpler to establish and manipulate. We provide formulas for the leading density and redshift-space contributions, but also show how Doppler-like and lensing terms can be easily included in this formalism. We have implemented and made publicly available software for computing those correlations efficiently, without any Limber approximation, and validated this software with the CLASSgal code. It is available at https://gitlab.in2p3. fr/campagne/AngPow.
A unified model for transfer alignment at random misalignment angles based on second-order EKF

In the transfer alignment process of inertial navigation systems (INSs), the conventional linear error model based on the small misalignment angle assumption cannot be applied to large misalignment situations. Furthermore, the nonlinear model based on the large misalignment angle suffers from redundant computation with nonlinear filters. This paper presents a unified model for transfer alignment suitable for arbitrary misalignment angles. The alignment problem is transformed into an estimation of the relative attitude between the master INS (MINS) and the slave INS (SINS), by decomposing the attitude matrix of the latter. Based on the Rodriguez parameters, a unified alignment model in the inertial frame with the linear state-space equation and a second order nonlinear measurement equation are established, without making any assumptions about the misalignment angles. Furthermore, we employ the Taylor series expansions on the second-order nonlinear measurement equation to implement the second-order extended Kalman filter (EKF2). Monte-Carlo simulations demonstrate that the initial alignment can be fulfilled within 10 s, with higher accuracy and much smaller computational cost compared with the traditional unscented Kalman filter (UKF) at large misalignment angles.
Morphological characteristics and molecular identification of a wild Thai isolate of the tropical mushroom Hed Taen Rad ( Macrocybe crassa )

Inyod I, Sassanarakit S, Payapanon A, Keawsompong S. 2017. Morphological characteristics and molecular identification of a wild Thai isolate of the tropical mushroom Hed Taen Rad (Macrocybe crassa). Biodiversitas 18: 221-228. Hed Taen Rad or Macrocybe crassa is a wild edible mushroom found in Thailand. It has a large fruiting body with a meaty texture and a delicious taste. Five strains of Hed Taen Rad; DOA, DOA-1, DOA-4, DOA-7 and DOA-10 were tested in different media, pH values and temperatures to measure mycelium growth kinetics and identify mycelia and basidiomata. Results indicated that mushroom mycelial growth rates were highest on MEA medium at pH values between 8 and 10, and temperatures between 20°C and 30°C. Identification of the isolates was based on the morphology characteristics of the basidiomata were closely similar to M. crassa (Berk.), and different from M. gigantea (Massee). For molecular analysis by sequencing of their internal transcribed spacer (ITS) regions was identified as a T. giganteum since limited ITS rDNA sequences from M. crassa exist in public databases. Therefore, the identification of five strains of Hed Taen Rad using molecular methods could be erroneous. Therefore, morphology characteristics study is suitable for further analysis method on genetic study of Hed Taen Rad.
Competing Bandits: e Perils of Exploration under Competition∗

Most online platforms strive to learn from interactions with consumers, and many engage in exploration: making potentially suboptimal choices for the sake of acquiring new information. We initiate a study of the interplay between exploration and competition: how such platforms balance the exploration for learning and the competition for consumers. Here consumers play three distinct roles: they are customers that generate revenue, they are sources of data for learning, and they are self-interested agents which choose among the competing platforms. We consider a stylized duopoly model in which two rms face the same multi-armed bandit instance. Users arrive one by one and choose between the two rms, so that each rm makes progress on its bandit instance only if it is chosen. We study whether and to what extent competition incentivizes the adoption of beer bandit algorithms, and whether it leads to welfare increases for consumers. We nd that stark competition induces rms to commit to a “greedy” bandit algorithm that leads to low consumer welfare. However, we nd that weakening competition by providing rms with some “free” consumers incentivizes beer exploration strategies and increases consumer welfare. We investigate two channels for weakening the competition: relaxing the rationality of consumers and giving one rm a rst-mover advantage. We provide a mix of theoretical results and numerical simulations. Our ndings are closely related to the “competition vs. innovation” relationship, a well-studied theme in economics. ey also elucidate the rst-mover advantage in the digital economy by exploring the role that data can play as a barrier to entry in online markets. ∗is is a merged and nal version of two conference papers, Mansour et al. (2018) and Aridor et al. (2019), with a unied and streamlined presentation and expanded background materials. All theoretical results are from Mansour et al. (2018), and all experiments are from Aridor et al. (2019). Appendices A,B are completely new compared to the conference versions. †Columbia University, Department of Economics. Email: g.aridor@columbia.edu ‡Google and Tel Aviv University, Department of Computer Science. Email: mansour.yishay@gmail.com §Microso Research New York City. Email: slivkins@microso. com ¶University of Minnesota Twin Cities, Department of Computer Science. Email: zsw@umn.edu Part of the research was done when Z.S. Wu was an intern and a postdoc at Microso Research NYC. ar X iv :2 00 7. 10 14 4v 1 [ cs . G T ] 2 0 Ju l 2 02 0
Effect of casing aspiration on the tip leakage flow in the axial flow compressor cascade

Tip leakage flow is usually responsible for the deterioration of compressor performance and stability. The current paper conducts numerical simulations on the impact of casing aspiration on the axial compressor cascade performance. Three aspiration schemes with different chordwise coverage are studied and analyzed. It is found that the cascade performance can be effectively improved by the appropriate casing aspiration, and the optimum aspiration scheme should cover the area including the onset point of tip leakage vortex and its vicinity. The control mechanisms are different for the aspiration schemes located at different blade chord ranges. For the aspiration scheme covering the onset point of tip leakage vortex, the improvement of the cascade performance is mainly due to that the starting point of the tip leakage vortex is shifted downstream. The original tip leakage vortex structure is divided into two parts if the aspiration scheme is located behind the onset point of tip leakage vortex and the final control effect is the combination of the influence from the two different parts of tip leakage vortex. Additionally, the casing aspiration redistributes the blade loading along the chord near blade tip. The results of these investigations may offer guidance for the appropriate design of aspiration scheme in the future updated compressors and the overall total pressure loss coefficient caused by aspiration slot should be considered in the design process.
Embedding subspaces of L1 into l1N

We simplify techniques of Schechtman,Bourgain,Lindenstrauss,Milman, to prove the following: If X is an n-dimensional subspace of L 1 , there exists a subspace Y of l 1 N such that d(X,Y)≤1+e whenever N≥CK(X) 2 e −2 n, where K(X) is the K-convexity constant of X, and where C is a universal constant