1,488 research outputs found
Interpolating sequences for H∞(BH)
No full textWe prove that under the extended Carleson’s condition, a sequence (xn) ⊂ BH is linear interpolating for H∞(BH) for an infinite dimensional Hilbert space H. In particular, we construct the interpolating functions for each sequence and find a bound for the constant of interpolation.The author is supported by Project MTM 2011-22457 (Ministerio de Economía y Competitividad, Spain) and Project P1-1B2014-35 (Universitat Jaume I, Spain
Bifurcations of emergent bursting in a neuronal network
No full textComplex neuronal networks are an important tool to help explain paradoxical phenomena observed in biological recordings. Here we present a general approach to mathematically tackle a complex neuronal network so that we can fully understand the underlying mechanisms. Using a previously developed network model of the milk-ejection reflex in oxytocin cells, we show how we can reduce a complex model with many variables and complex network topologies to a tractable model with two variables, while retaining all key qualitative features of the original model. The approach enables us to uncover how emergent synchronous bursting can arise from a neuronal network which embodies known biological features. Surprisingly, the bursting mechanisms are similar to those found in other systems reported in the literature, and illustrate a generic way to exhibit emergent and multiple time scale oscillations at the membrane potential level and the firing rate level
Can the BH&J Buy vs. Rent Index Anticipate Housing Price Movements?
No full textThis paper investigates whether and to what extent the Beracha, Hardin, and Johnson Buy vs. Rent Index (BH&J Index) is able to anticipate future housing price movements. The BH&J Index is based on a model introduced by Beracha and Johnson (2012) in which a low index value is associated with a buy recommendation and a high index value is associated with a rent recommendation. The results of our analysis reveal a negative relation between the BH&J Index value and future housing price changes at the metropolitan level, which is consistent with the buy or rent recommendation of the index. The negative relation between the BH&J Index value and future housing price changes is statistically significant, economically meaningful, and is particularly relevant for medium-term holding periods
Evaluation and ranking of researchers--Bh Index.
No full textEvaluation and ranking of every author is very crucial as it is widely used to evaluate the performance of the researcher. This article proposes a new method, called Bh-Index, to evaluate the researchers based on the publications and citations. The method is built on h-Index and only the h-core articles are taken into consideration. The method assigns value additions to those articles that receive significantly high citations in comparison to the h-Index of the researcher. It provides a wide range of values for a given h-Index and effective evaluation even for a short period. Use of Bh-Index along with the h-Index gives a powerful tool to evaluate the researchers
UVRAG - A new player in autophagy and tumor cell growth
No full textAutophagy has a well-documented role in the maintenance of homeostasis and the response to stressful environments and it is often deregulated in various human diseases including cancer. The regulation of the Beclin 1-PI3KC3 complex lipid kinase activity is a critical element in the autophagy signaling pathway. Previous studies(1) have demonstrated that Beclin 1-PI3KC3-mediated autophagy is negatively regulated by a proto-oncogene Bcl-2. We have recently identified a novel coiled-coil UVRAG tumor suppressor candidate, which positively engages in Beclin 1-dependent autophagy. UVRAG interacts with Beclin 1, leading to activation of autophagy and thereof inhibition of tumorigenesis. This finding adds a new player to the emerging picture of the autophagy network, underscoring the importance of the coordinated activity between Bcl-2 and UVRAG in the regulation of Beclin 1-PI3KC3-mediated autophagy and tumor cell control.X1146sciescopu
ROVIBRATIONAL CHARACTERIZATION OF X BH BY THE EXTRAPOLATION OF PHOTOSELECTED HIGH-RYDBERG SERIES IN BH
No full textAuthor Institution: Department of Chemistry, Purdue University, West Lafayette, IN 47907; Department of Chemistry, University of British Columbia, 6174 University Boulevard,; Vancouver, BC, Canada V6T 1Z3Optical-optical-optical triple resonance spectroscopy of BH isolates high-Rydberg states that form series converging to rotational state specific ionization potentials in the vibrational levels of BH from through . Limits defined by a comprehensive fit of these series to state-detailed thresholds yield rovibrational constants describing the X state of BH. The data provide a first determination of the vibration-rotation interaction parameter cm and a more accurate estimate of cm together with the higher-order anharmonic terms cm and cm. The deperturbation and global fit of series to state-detailed limits also yields a precise value of the adiabatic ionization potential of BH of cm, or eV. High precision is afforded here by the use of graphical analysis techniques, narrow bandwidth laser systems, and an analysis of newly observed, high-principal quantum number Rydberg states that conform well with a Hund's case (d) electron-core coupling limit
Preparation and Characterization of High-Strength Geopolymer Based on BH-1 Lunar Soil Simulant with Low Alkali Content
No full textThe construction of a lunar base and habitation on the Moon has always been on researchers’ minds. Building materials used in in situ lunar resources are of great significance for saving expensive space freight. In this study, a new type of lunar soil simulant named Beihang (BH)-1 was developed. The chemical mineral composition and microstructure of BH-1 closely resemble those of real lunar soil, as verified by X-ray fluorescence spectroscopy (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and reflectance spectra. This research also synthesized a geopolymer based on BH-1 cured at simulated lunar atmospheric conditions. We also investigated the effect of supplementing aluminum (Al) sources on the enhancement of geopolymer strength based on BH-1. The rheological behavior of alkali-activated BH-1 pastes was determined for workability. XRF, XRD, Fourier transform infrared spectroscopy, SEM coupled with energy dispersive spectroscopy, and 27Al magic angle spinning-nuclear magnetic resonance were used to characterize resulting geopolymers. Rheological test findings showed that the rheology of BH-1 pastes fits the Herschel–Bulkley model, and they behaved like a shear-thinning fluid. The results showed that the 28-day compressive strength of the BH-1 geopolymer was improved by up to 100.8%. Meanwhile, the weight of additives required to produce per unit strength decreased, significantly reducing the mass of materials transported from the Earth for the construction of lunar infrastructure and saving space transportation costs. Microscopic analyses showed that the mechanism to improve the mechanical properties of the BH-1 geopolymer by adding an additional Al source enhances the replacement of silicon atoms by Al atoms in the silicon–oxygen group and generates a more complete and dense amorphous gel structure
More on finite groups with few defining relations
No full textMennicke J, Neumann BH. More on finite groups with few defining relations. Journal of the Australian Mathematical Society. 1989;46(1):132-136.Certain central products of the binary polyhedral groups with finite cyclic groups are here shown to have presentations with two generators and two defining relations; this disproves a conjecture of the second author, stated in J. Austral. Math. Soc. Ser. A 38 (1985), 230–240
Impacts of subsidy policies on vaccination decisions in contact networks
No full textAuthor name used in this publication: Hai-Feng ZhangVersion of RecordPublishedVoR allowe
COLLISION-INDUCED ELECTRONIC QUENCHING OF
No full textAuthor Institution: Applied Research Corporation; Chemistry Division, Code 6111, Naval Research LaboratoryElectronic quenching cross sections of BH were measured by examining fluorescence decay times in the presence of sixteen collision partners at 298K. The partners exhibit wide variations in mass, electric dipole moment and higher order moments. Except for the extremely low cross sections measured for He and , values range from 5 to . Of the fourteen remaining partners, eleven are represented moderately well by a multipole attractive force model, two (OCS and ) fall well below the expected cross section and one () has an experimental cross section larger than predicted by this model. A temperature comparison is made for the quenching of by CO at 298K and 473K. The measured rate constant at 473K exhibits a 10\% decrease compared to the 298K value with an uncertainty of 11\%
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