Miracle-dz/UniFAR-FTUs huggingface dataset:
Vibrational Properties of Protons in Hydrated BaInxZr1-xO3-x/2

We investigate the local proton dynamics in the proton conducting hydrated perovskite system BaInxZr1-xO3-x/2 (x=0.25-0.75) using infrared spectroscopy and first-principles calculations. We show that oxygen vacancies and dopant atoms in the vicinity of the proton tilt the proton toward a neighboring oxygen creating strongly hydrogen-bonded configurations. This is manifested as a strong redshift of the O-H stretch band in the infrared absorption spectrum. We also find considerable fluctuations of the nearest and next-nearest oxygen-proton distances with time, resulting in additional spectral broadening. By comparing the frequencies of computed O-H stretch modes we can relate specific local configurations to different parts of the broad O-H stretch band. Even though hydrogen-bonded configurations favor proton transfer they hinder the long-range migration by decreasing the reorientational rate. Thus, in order to optimize the proton mobility it is important to avoid extreme configurations caused by either oxygen vacancies or dopant atoms in the perovskite structure.
Rado's theorem for polymatroids

The theorem of R. Rado (12) to which I refer by the name ‘Rado's theorem for matroids’ gives necessary and sufficient conditions for a family of subsets of a finite set Y to have a transversal independent in a given matroid on Y. This theorem is of fundamental importance in both transversal theory and matroid theory (see, for example, (11)). In (3) J. Edmonds introduced and studied ‘polymatroids’ as a sort of continuous analogue of a matroid. I start this paper with a brief introduction to polymatroids, emphasizing the role of the ‘ground-set rank function’. The main result is an analogue for polymatroids of Rado's theorem for matroids, which I call not unnaturally ‘Rado's theorem for polymatroids’.
Search for physics beyond the standard model in the trilepton signature in pbar-p collisions at sqrt s = 1.96 TeV with CDF II

The standard model (SM) of particles and fields is a theory that has proven very accurate in the currently accessible collider energies. Nonetheless, the SM is theoretically incomplete in the sense that it leaves many questions and problems unanswered, for example, the origin of electroweak symmetry breaking (EWSB). The Higgs boson is introduced to the SM to provide a mechanism for electroweak symmetry breaking and masses to quarks and leptons. However, the introduction of the Higgs mechanism has the undesirable effect of introducing the hierarchy problem which is characterized by quadratically divergent contributions to the Higgs mass squared. Supersymmetry (SUSY) has been postulated as a way to solve the problem of the fine tuning of the Higgs self-interactions, and additionally to provide a possible mechanism for EWSB. The golden search channel for mSUGRA is the $$\chi{^\pm}_{1} \chi^{0}_{2} \rightarrow 3\ell$$ (three leptons) channel. It offers a reasonable signal $$\sigma \ x BR$$ with very small contributions from Standard Model backgrounds. This thesis, presents a search for chargino-neutralino production within the mSUGRA framework.
Untersuchung der Struktur des QCD-Vakuums mit Hilfe von Overlap-Fermionen

Einleitung 9 1\. Grundlagen 17 2\. Modelle zur Beschreibung des QCD-Vakuums 43 3\. Simulationsdetails und Analysewerkzeuge 49 4\. Verteilung der Eigenmoden 67 5\. Lokalisierungseigenschaften der Eigenmoden 77 6\. Chirale Eigenschaften der Eigenmoden 91 7\. Die topologische Ladungsdichte 97 8\. Der gefilterte gluonische Feldstarketensor 135 9\. Saturierung hadronischer Korrelationsfunktionen 147 10\. Der Phasenubergang der QCD bei endlicher Temperatur 159 Zusammenfassung 201 A Tabelle der Dimensionen 205 B Konventionen 207 Eigene Veroffentlichungen 209 Literaturverzeichnis 211 Danksagung 229
Slip Geometry and Plastic Anisotropy of Body-Centered Cubic Metals

The plastic anisotropy of bcc metals comprises the absence of well-defined slip planes, an orientation dependence of the uniaxial flow stress which seems to be in disagreement with Schmid's law of resolved shear stress, and an asymmetry between tension and compression. Recent theoretical and experimental work has shown that these phenomena are closely correlated to elementary slip on {211} planes in an intermediate temperature range. After a discussion of crystallographic peculiarities of {211} slip, a kinematic model for microscopic cross-slip on triplets of slip planes is proposed which, in combination with the well-established model of thermally activated kink-pair formation, allows quantitative calculations of the plastic anisotropy.
A pistonless Stirling engine—The traveling wave heat engine

The propagation of acoustical waves through a differentially heated regenerator results in gas in the regenerator undergoing a Stirling thermodynamic cycle. One direction of wave propagation results in amplification of the waves and conversion of thermal energy into acoustical energy. The opposite direction results in acoustical energy being used to pump heat. The ideal gain and maximum energy conversion rates are derived in this paper. Low power gain measurements were made which verify the derived gain equation. Practical engines and heat pumps using this principle are discussed.
The Jovian magnetotail and its current sheet

Analyses of Voyager magnetic field measurements have extended our understanding of the structural and temporal characteristics of Jupiter's magnetic tail. The magnitude of the magnetic field in the lobes of the tail is found to decrease with Jovicentric distance approximately as r−1.4, compared with the power law exponent of −1.7 found for the rate of decrease along the Pioneer 10 outbound trajectory. Voyager observations of magnetic field component variations with distance from the magnetic dipole axis are consistent with the variations expected from the geometry of a magnetotail field and hence do not unambiguously support the uniform radial plasma outflow model derived from Pioneer 10 data. Voyager 2 has shown that the azimuthal current sheet which surrounds Jupiter in the inner and middle magnetosphere extends ‘tailward’ (in the antisun direction) to a distance of at least 100 RJ. In the tail this current sheet consists of a plasma sheet and embedded ‘neutral’ sheet. In the region of the tail where the sheet is observed, the variation of the magnetic field as a result of the sheet structure and its 10-hour periodic motion is the dominant variation seen. Studies of both the large-scale configuration of the current sheet viewed as a surface and of the internal structure of the sheet and its orientation indicate that (1) at distances ≳30 RJ in the tail the sheet is oriented within ±10° of the Jovian equatorial plane, most likely as a result of the solar wind interaction with the Jovian magnetosphere, (2) the surface moves north and south with an amplitude of several RJ with respect to that plane, and (3) at large distances this motion is primarily due to a rocking of the current sheet about the Jupiter-sun line. A mathematical model that takes the tail geometry into account provides a simpler description of sheet motion in the deep tail than do models based on axial symmetry. The plasma sheet in the tail is estimated to have an average thickness of ≤5 RJ.
Reconstructing stratified fluid flow from reciprocal scattering measurements

This paper shows how an inversion formula can be derived for reconstructing the magnitude and direction of stratified fluid flow from two scattering measurements. The measurements are recorded by transmitting an acoustic pulse from a source below the region of stratified flow and then recording the scattered wave at another point horizontally displaced from the source. A second measurement is performed with the source and receiver interchanged and the result is subtracted from the first scattering measurement. This difference is, within the Born approximation, independent of scattering that arises from stationary inhomogeneities and thus solely sensitive to scattering due to flow. As a by-product, the sum of the two scattering measurements with source and receiver interchanged yields a quantity sensitive only to scattering from stationary inhomogeneities. This allows the stationary inhomogeneities to be recovered independently of flow.
Adaptive NN output‐feedback decentralized stabilization for a class of large‐scale stochastic nonlinear strict‐feedback systems

In this paper, the decentralized adaptive neural network (NN) output‐feedback stabilization problem is investigated for a class of large‐scale stochastic nonlinear strict‐feedback systems, which interact through their outputs. The nonlinear interconnections are assumed to be bounded by some unknown nonlinear functions of the system outputs. In each subsystem, only a NN is employed to compensate for all unknown upper bounding functions, which depend on its own output. Therefore, the controller design for each subsystem only need its own information and is more simplified than the existing results. It is shown that, based on the backstepping method and the technique of nonlinear observer design, the whole closed‐loop system can be proved to be stable in probability by constructing an overall state‐quartic and parameter‐quadratic Lyapunov function. The simulation results demonstrate the effectiveness of the proposed control scheme. Copyright © 2010 John Wiley & Sons, Ltd.
Zero-absolute-vorticity state in a rotating turbulent shear flow

Stability characteristics of a rotating simple shear flow modulated periodically in the shear direction is investigated by direct numerical simulation. The temporal evolution and the final profile of the mean flow are examined, starting with a random perturbation imposed on it under the assumption that the velocity and pressure fields are uniform in the mean flow direction. It is found that the mean velocity profile changes due to the shear-Coriolis instability. If there is a locally unstable region in a stable rotating simple shear, the mean velocity profile there is deformed into a linear one with nearly-zero absolute vorticity. An analogy holds between rotating uniformly sheared turbulence and thermally convective turbulence that the region of nearly-zero absolute vorticity in the former corresponds to that of nearly-uniform temperature in the latter.
GTS allocation scheme revisited

In IEEE 802.15. 4, the bandwidth under-utilisation problem occurs in the guaranteed time slot (GTS) when the used bandwidth is less than the available bandwidth. A new GTS scheme is presented to allow more devices to share the bandwidth within the same period. Thus the performance of bandwidth utilisation is improved.
Stabilising slow-switching laws for switched discrete-time linear systems

For a class of switched discrete-time linear systems, a state-dependent switching law with dwell time is designed to make the overall system asymptotically stable. A main feature is that the Lyapunov-like function may not be monotonically decreasing in both time-driven and state-driven periods, and this feature allows the proposed stabilising switching law being of lower switching frequency in contrast with recent results. An illustrative example is employed to show the effectiveness of the proposed switching law. Furthermore, it is shown that the proposed switching law ensures that a bounded perturbation implies bounded states, and a convergent perturbation implies convergent states. When the system state is not available, an observer-based state-dependent switching law with dwell time is also developed.
Econophysical anchoring of unimodal power-law distributions

The sciences are abundant with size distributions whose densities have a unimodal shape and power-law tails both at zero and at infinity. The quintessential examples of such unimodal and power-law (UPL) distributions are the sizes of income and wealth in human societies. While the tails of UPL distributions are precisely quantified by their corresponding power-law exponents, their bulks are only qualitatively characterized as unimodal. Consequently, different statistical models of UPL distributions exist, the most popular considering lognormal bulks. In this paper we present a general econophysical framework for UPL distributions termed ‘the anchoring method’. This method: (i) universally approximates UPL distributions via three ‘anchors’ set at zero, at infinity, and at an intermediate point between zero and infinity (e.g. the mode); (ii) is highly versatile and broadly applicable; (iii) encompasses the existing statistical models of UPL distributions as special cases; (iv) facilitates the introduction of new statistical models of UPL distributions and (v) yields a socioeconophysical analysis of UPL distributions.
The ionosphere of Saturn as observed by the Cassini Radio Science System

Fifty‐nine ionsopheric radio occultation observations of the vertical electron density profile in the Saturn ionosphere have been made since the Cassini spacecraft was inserted in orbit around Saturn in 2004. Significant orbit to orbit variations were observed, but the general trend noted in earlier orbits, namely, increasing electron densities with increasing latitude was reconfirmed and bolstered with this extended data base. This trend is likely to be due to some combination of increasing ionization rates and decreasing water influx with latitude.
Piezomagnetic and elastic properties of metallic glass alloys Fe67CO18B14Si1 and Fe81B13.5Si3.5C2

The piezomagnetic and elastic properties of two metallic glass alloys Fe67Co18B14Si1 (Metglas 2605CO) and Fe81B13.5Si3. 5C2 (Metglas 2605SC) are presented. The Metglas 2605CO and 2605SC alloys show optimum magnetomechanical coupling coefficient k33, change of Young’s modulus as a function of applied field ΔE/E, and piezomagnetic strain constant d33 values of 0.76, 0.79, 88×10−9 m/A and 0.90, 4.72, 400×10−9 m/A, respectively. The ΔE/E and d33 values of the 2605SC alloy are the largest ever reported. This alloy has a hydrophone figure‐of‐merit that far exceeds the corresponding value of a commonly used piezoelectric ceramic, PZT4. Both of these commercially available alloys should find considerable use in transduction devices such as sensors or variable acoustic delay lines.
THE OVERALL STRUCTURE OF GAS IN THE GALAXY.

This paper considers the physical structure and the distribution of gas in the Galaxy, with particular attention given to the galactic distribution of the interstellar atomic and molecular hydrogen. These two components, which contain essentially all of the interstellar gas by mass, are distributed in a thin disk in which both the total gas surface density and the ratio of molecular to atomic hydrogen decrease more or less monotonically with distance from the center of the Galaxy. The molecular hydrogen is concentrated in large (up to a million solar masses) clouds in which star formation is taking place. Due to mass loss from evolving stars, about 20 percent of gas is returned to the interstellar medium. The scale height of the interstellar molecular hydrogen is about half that of the atomic gas.
An Adaptive Control Approach for Discrete-Time Systems with Unknown Backlash at the Input

In this paper, we focus on the development of an adaptive control scheme for systems with unknown backlash. More specifically, we propose a discrete timeadaptive backlash inverse based controller for plants that have a known line arpart and an unknown backlash at its input. We also demonstrate that the harmful effects of backlash can be cancelled by adding two control blocks. These blocks are the following: an adaptive backlash inverse structure and an adaptive linear filter controller. The latter block provides a new adaptive law for the updating of the backlash parameters. We show by simulations that our adaptive control approach improves the system performance once the difference between the backlash output and the adaptive backlash inverse input, converges to a very small value. The simulations involve a third order system that highlights the efficiency of the proposed adaptive control approach.
A coplanar waveguide-fed printed antenna with complementary split ring resonator for wireless communication systems

In this paper, we report a new design of a compact coplanar waveguide-fed printed antenna with complementary split ring resonator (CSRR). The designed antenna consists of two CSRRs, with same geometrical parameters, printed symmetrically into the top layer. The overall volume of the proposed antenna is only 30 × 20 × 0.8 mm3 (0.58 λ0 × 0.39 λ0 × 0.015 λ0), where λ0 is the wavelength of the simulated resonance frequency. The resonance frequency of the antenna is essentially defined by geometrical parameters of the CSRR, which makes it suitable for various wireless communication systems. The characteristics of the proposed antenna have been investigated using simulation software CST Microwave Studio and experimental results. The measured and simulated results show good agreement, providing a simple and low-cost design.
Bandgap analysis of cylindrical shells of generalized phononic crystals by transfer matrix method

Based on the concept of generalized phononic crystals (GPCs), a type of 1D cylindrical shell of generalized phononic crystals (CS-GPCs) where two kinds of homogeneous materials are arranged periodically along radial direction was proposed in this paper. On the basis of radial, torsional shear and axial shear vibrational equations of cylindrical shell, the total transfer matrix of mechanical state vector were set up respectively, and the bandgap phenomena of these three type waves were disclosed by using the method of transfer matrix eigenvalue of mechanical state vector instead of the previous localized factor analyses and Bloch theorem. The characteristics and forming mechanism of these bandgaps of CS-GPCs, together with the influences of several important structure and material parameters on them were investigated and discussed in detail. Our results showed that, similar to the plane wave bandgaps, 1D CS-GPCs can also possess radial, torsional shear and axial shear wave bandgaps within high frequency region that conforms to the Bragg scattering effect; moreover, the radial vibration of CS-GPCs can generate low frequency bandgap (the start frequency near 0 Hz), as a result of the double effects of wavefront expansion and Bragg scattering effect, wherein the wavefront effect can be the main factor and directly determine the existence of the low frequency bandgaps, while the Bragg scattering effect has obvious enhancement effect to the attenuation. Additionally, the geometrical and material parameters of units have significant influences on the wave bandgaps of CS-GPCs.
PHOTODEGRADATION ACTIVITY OF PURE , PVP CAPPED AND CHITOSAN CAPPED ZnO NANOPARTICLES AGAINST AZO RED DYE UNDER UV IRRADIATION

ZnO NPs of different surface morphologies are synthesized by different methods. These II-IV group metal oxide semiconductor photocatalysts are potentially explored photodegradation of Azo red dye in water. The structural and optical properties of synthesized nanoparticles were analyzed using XRD, SEM, UV and PL techniques. The results showed that the average particle size of the prepared nanoparticles was 15 nm – 20 nm. The photodegradation effects against azo red dye investigated by pure, PVP and Chitosan capped ZnO nanoparticles under ultra violet irradiation. The experimental results showed the azo red dye was degraded by 76% in 120 minutes when chitosan capped ZnO nanoparticles under ultra violet irradiation were used as removal catalyst, besides removal of colour. Synthesized chitosan capped ZnO nanoparticles exhibit outstanding photocatalytic activity under UV irradiation. A comparative study of photodegradation efficiency among pure ZnO, PVP caped ZnO and chitosan capped ZnO also performed. Metal oxide Semiconductor photocatalysis frequently leads to partial or complete mineralization of organic contaminants.
Taketa's theorem for relative character degrees

It has been conjectured by Isaacs that, for finite group G, the inequality dl (N) ≤ |cd (G | N)| holds for all normal solvable subgroups N of G. We show that this conjecture holds for M -groups. Also, we prove that, if G is solvable and the common-divisor graph Γ(G|N) is disconnected, then dl (N) ≤ |cd (G | N)|, which is a generalization of [5, Theorem A].
Time evolution of one-dimensional gapless models from a domain wall initial state: stochastic Loewner evolution continued?

We study the time evolution of quantum one-dimensional gapless systems evolving from initial states with a domain wall. We generalize the path integral imaginary time approach that together with boundary conformal field theory allows us to derive the time and space dependence of general correlation functions. The latter are explicitly obtained for the Ising universality class, and the typical behavior of one- and two-point functions is derived for the general case. Possible connections with the stochastic Loewner evolution are discussed and explicit results for one-point time dependent averages are obtained for generic κ for boundary conditions corresponding to stochastic Loewner evolution. We use this set of results to predict the time evolution of the entanglement entropy and obtain the universal constant shift due to the presence of a domain wall in the initial state.
Paul Roesel Garabedian (1927-2010)

Background Mathematics was in Paul’s genes: both his father and his two uncles were mathematicians. Paul and his sister, Caroline Coulon, were home schooled. At age sixteen he was not admitted to Harvard because Paul’s father’s Ph.D. advisor, G. D. Birkhoff, was concerned that he might be immature. Instead, Paul went to Brown—and excelled. He simply was a prodigy. In the enlightening oral history conducted by Philip Davis in 2004 [2], Paul remarked (with insight), “I was a child prodigy. I am still a child prodigy, but there are very few people who know that, perhaps yourself and a few others. ” Philip Davis laughed. After graduating from Brown in 1946 be began graduate school at Harvard. Two years later at the age of twenty he received his Ph.D., working
A Novel Algorithm for Detecting Conjugate Archaeological Fragments

Matching fragmented archaeological parts has always puzzled archaeologists. Very few attempts have been made so far for the automation of this procedure and thus assisting scholars to this effect. In this paper an innovative method for the detection of conjugate fragments is proposed, which is based mainly on their geometry. The Fragmatch algorithm developed for that purpose is presented, together with an extensive analysis of both of its parts; the global and the partial matching of surfaces. The method proposed is based on the comparison of vectors and surfaces, performed linearly, for simplicity and speed. It addresses mainly fragments of relatively big architectural pieces. A series of simulations have been performed in order to test the limits of the algorithm for the noise and the accuracy of scanning, for the number of scan points, as well as for the wear of the surfaces and the diversity of shapes. Problems that have been encountered during the application of these examples are interpreted and way.
Application of MMAS and Rough Sets in Compound-Fault Diagnosis of Bearing

The diagnosis of compound-fault is always a difficult point, and there is not an effective method in equipment diagnosis field. Rough set theory is a relatively new soft computing tool to deal with vagueness and uncertainty. Condition attribute reduce algorithm is the key point of rough set research. However, it has been proved that finding the best reduction is the NP-hard problem. For the purpose of getting the reduction of systems effectively, an improved algorithm is put forward. The worst Fisher criterion was adopted as heuristic information to improve the searching efficiency and Max-Min Ant System was selected. Simplify the fault diagnosis decision table, then clear and concise decision rules can be obtained by rough sets theory. This method raises the accuracy and efficiency of fault diagnosis of bearing greatly.