Miracle-dz/UniFAR-FTUs huggingface dataset:
Guided Bone Regeneration Effects on Bone Quantity and Outcomes of Dental Implants in Patients With Insufficient Bone Support: A Single-Center Observational Study

Background Guided bone regeneration (GBR) is used to influence on stabilization of dental implants in patients with insufficient bone quantity and anatomical problems. But many studies using GBR resulted in divergent results according to the efficiency of new bone quantity formation and implant survival. This research aimed to study the effects of GBR on the increase of bone quantity and short-term stabilization of dental implants in patients with insufficient bone support. Methodology The study included 26 patients that underwent the procedure for 40 dental implants from September 2020 to September 2021. In each case, the vertical bone support was intraoperatively measured, through the MEDIDENT Italia paradontal millimetric probe (Medident Italia, Carpi, Italy). The vertical bone defect was considered when the mean vertical depth between the abutment junction and the marginal bone was greater than 1mm up to 8mm. In the group with the presence of the vertical bone defect, GBR technique was used during the procedure of dental implants realized with synthetic bone graft, resorbable membrane, and platelet-rich fibrin (PRF), and the group was considered the study (GBR) group. The group of patients with no vertical bone defects (less than 1mm) and no need for any GBR technique use was considered the control (no-GBR) group. The bone support was evaluated again intraoperatively after six months in both groups when the healing abutments were positioned. The vertical bone defect for each group in baseline and after six months is presented as mean±SD and compared using a t-test. A t-test for Equality of Means was used to calculate the mean depth difference (MDD) between baseline and six months values in each group (GBR and no-GBR) and also between both groups. P-value ≤ 0.05 is considered statistically significant. Results Overall 40 dental implants were placed, 20 of them were included in the GBR group and 20 in the no-GBR group. In the GBR group, a statistically significant greater mean vertical bone defect in baseline (day 1), compared to the no-GBR group was found (-4.46±2.76 vs -0.27±0.22; MDD = -4.19 [-5.44 to -2.94] p<0.001). At six months of follow-up in the GBR group, a new bone around the implant was formed, presenting a significantly lower bone defect compared to the baseline measure (-0.39±0.43 vs -4.46±2.76; MDD = -4.07 mm [-5.37 to -2.78] p<0.001). In six months, no statistically significant difference between GBR and no-GBR group in bone support was found (-0.39±0.43 vs -0.27±0.22; MDD = -0.19 [-0.40 to -0.03] p=0.10). In each group, only one implant failure was observed. Conclusions The use of GBR showed an important reduction of vertical depth defect between healing abutment and marginal bone predisposing similar short-term stability and survival of dental implants. The use of GBR techniques could be essential in the stabilization of dental implants in patients with insufficient bone support.
Efficient quantization algorithms for discrete functions

Abstract A function attaining a finite number of values only is approximated by another such function with fewer values. The approximation problem is solved to local as well as to global optimality. In this way, one-dimensional signal compression and segmentation problems with a-priori known number of regions can be solved in a threshold free manner.
Ranking Fuzzy Numbers by Using Radius of Gyration

Ranking fuzzy numbers plays a very important role in linguistic decision making and some other fuzzy application systems. Many methods have been proposed to deal with ranking fuzzy numbers. Recently, Deng and his colleagues, presented a method to rank fuzzy numbers. They employed radius of gyration rank fuzzy numbers; however there were some problems with the ranking method. In this paper, we f irst indicate the problems of ROG (Radius of Gyration) method and then propose a revised method which can avoid these problems for ranking fuzzy numbers. Since the revised method is based on the ROG method, it is easy to rank fuzzy numbers in a way similar to the original method.
The dielectric behavior of Zn1−xNixO/NiO two-phase composites

The effect of nickel content on the dielectric permittivity ‘εr’ and the ac-electrical conductivity of Zn1−xNixO/NiO (0 ≤ x ≤ 0.55) two-phase composites were investigated. The antiferro to the paramagnetic Néel temperature TN (~ 523 K) of the NiO associated with the structural phase transition from the rhombohedral to the cubic phase has been exploited to realize a dielectric anomaly across 523–541 K in the Zn1−xNixO/NiO composite system. Also, a giant dielectric peak across 410 °C in pure NiO was observed together with an anomaly across TN. The formation of tiny polar clusters due to the compositional heterogeneity for the samples with x ≥ 0.16 drove the system to exhibit a weakly coupled relaxor-like behavior with a locally varying maximum temperature of T* (~ 530 K at 106 Hz), obeying the Vogel–Fulcher law and the Uchino–Nomura criteria. The values of the diffuseness-exponent ‘γ’ (1.91) and the shape-parameter ‘δ’ (88 °C) were determined by using the empirical scaling relation (εA/εr = 1 + 0.5 (T − TA)2/ δ2), which is often used to describe relaxor-like behavior. Our results provide strong evidence for the variable-range-hopping of charge carriers between the localized states. The effects of non-ohmic sample-electrode contact impedance and negative-capacitance on the global dielectric behavior of a Zn1−xNixO/NiO composite system are discussed.
Intermittency caused by compressibility: a Lagrangian study

We investigate how compressibility affects the turbulent statistics from a Lagrangian point of view, particularly in the parameter range where the flow transits from the incompressible type to a state dominated by shocklets. A series of three-dimensional simulations were conducted for different types of driving and several Mach numbers. For purely solenoidal driving, as the Mach number increases a new self-similar region first emerges in the Lagrangian structure functions at sub-Kolmogorov time scale and gradually extends to larger time scale. In this region the relative scaling exponent saturates and the saturated value decreases as the compressibility becomes stronger, which can be attributed to the shocklets. The scaling exponent for the inertial range is still very close to that of incompressible turbulence for small Mach number, and discrepancy becomes visible when the Mach number is high enough. When the driving force is dominated by the compressive component the shocklet-induced self-similar region occupies a much wider range of time scales than that in the purely solenoidal driving case. Regardless of the type of driving force, the probability density functions of the velocity increment collapse onto one another for the time scales in the new self-similar region after proper normalization.
An Inverse BEM-based Heat ConductionApproach To Identify Surface Temperatures

The purpose of the inverse problem considered in this study is to solve a steadystate two-dimensional heat conduction problem with ill-posed boundary conditions arising from the determination of unknown surface temperature distributions at an inaccessible surface exposed to convection. Temperature measurements supply the additional information that renders the problem solvable. The measurements are taken from thermocouples placed at the interior of a heat spreader whose backsurface is insulated. It is assumed that the contact resistance between the heater and the solid body is measured and known. A regularized quadratic functional is defined to measure the deviation of computed temperatures from the values under current estimates of the surface temperatures. The inverse problem is solved by minimizing this functional using a parallelized genetic algorithm (PGA) as the optimization algorithm and a two-dimensional multi-region boundary element method (BEM) heat conduction code as the field variable solver.
Atomic-scale Ge diffusion in strained Si revealed by quantitative scanning transmission electron microscopy

Aberration-corrected scanning transmission electronmicroscopy is employed to investigate the local chemistry in the vicinity of a Si0.8Ge0. 2/Si interface grown bymolecular-beamepitaxy.Atomic-resolution high-angle annular dark field contrast reveals the presence of a nonuniform diffusion of Ge from the substrate into the strained Si thin film. On the basis of multislice calculations, a model is proposed to quantify the experimental contrast, showing that the Ge concentration in the thin film reaches about 4% at the interface and decreases monotonically on a typical length scale of 10 nm. Diffusion occurring during the growth process itself therefore appears as a major factor limiting the abruptness of interfaces in the Si-Ge system
Pentacene OTFTs with PVA gate insulators on a flexible substrate

The characteristics of poly vinyl alcohol (PVA) and cross-linked PVA were analyzed in terms of the leakage current, the dielectric constant, and the immunity against moisture. For a crosslinked PVA, the leakage current at the same electric field was two orders of magnitude smaller than it was for PVA. Furthermore, the dielectric constant of cross-linked PVA was a little smaller and was less susceptible to changes in the frequency than that of PVA. However, organic thin film transistors (OTFTs) with cross-linked PVA show unsaturated output characteristics even at a drain bias of −50 V. Inserting a poly-methylmethacrylate (PMMA) buffer layer overcame the unsaturated output characteristics of OTFTs with cross-linked PVA gate insulators. In addition, the on-off current ratio, the subthreshold slope, and the threshold voltage were noticeably improved after the buffer-layer insertion.
Detection of the H 142α line from the Barnard Loop

La raie de recombinaison H142α a 13 cm a ete observee en 3 positions de la Boucle de Barnard. Les parametres de la region HII sont calcules et compares a ceux qu'on obtient a partir des mesures de raies optiques publiees. Les donnees suggerent que la rotation de la Boucle se fait dans le meme sens que celle du nuage neutre, en addition a l'expansion
Theoretical Analysis on the Measurement Errors of Local 2D DIC: Part I Temporal and Spatial Uncertainty Quantification of Displacement Measurements

This paper presents a theoretical uncertainty quantification of displacement measurements by subset‐based 2D‐digital image correlation. A generalised solution to estimate the random error of displacement measurement is presented. The obtained solution suggests that the random error of displacement measurements is determined by the image noise, the summation of the intensity gradient in a subset, the subpixel part of displacement, and the interpolation scheme. The proposed method is validated with virtual digital image correlation tests.
A Remarkable property of the Riemann-Christoffel tensor in four dimensions

Introduction. If the geometry of nature is Riemannian and the field equations of this geometry are controlled by a scale-invariant action principle, there are four a priori possible and algebraically independent invariants which may enter in the integrand of the action principle. This abundance of invariants hampers the mathematical development and the logical appeal of the theory. The present paper shows that two of these invariants are inactive in the formation of field equations and thus may be omitted. Only the two invariants I, = Ra,6Ra# and 12 =R2
Moduli Spaces for Rings and Ideals

The association of algebraic objects to forms has had many important applications in number theory. Gauss, over two centuries ago, studied quadratic rings and ideals associated to binary quadratic forms, and found that ideal classes of quadratic rings are exactly parametrized by equivalence classes of integral binary quadratic forms. Delone and Faddeev, in 1940, showed that cubic rings are parametrized by equivalence classes of integral binary cubic forms. Recently, Bhargava has showed that quartic rings (with cubic resolvents) are parametrized by classes of pairs of integral ternary quadratic forms, and that quintic rings (with sextic resolvents) are parametrized by quadruples of integral alternating quinary forms. Bhargava has also studied ideals in quadratic and cubic rings, and found that they are associated to pairs of 2 by 2 and 3 by 3 integral matrices. Birch, Merriman, Nakagawa, Corso, Dvornicich, and Simon have all studied rings associated to binary forms of degree n for any n, but it has not previously been known which rings, and with what additional structure, are associated to binary forms. In this thesis, we explain exactly what algebraic structures are parametrized by binary n-ic forms, for all n. The algebraic data associated to an integral binary n-ic form includes a rank n ring, an ideal class for that ring, and a condition on the ring and ideal class that comes naturally from geometry. We also give a different story for what is parametrized by integral binary quartic forms, namely, binary quartic forms parametrize quartic rings with a monogenic cubic resolvent. We further show that classes of pairs of n by n matrices parametrize the ideal classes of rings associated to binary n-ic forms. In fact, we prove these parametrizations when any base scheme replaces the integers, and show that the correspondences between forms and the algebraic data are functorial in the base scheme. We also give geometric constructions of the rings and ideals from the forms that parametrize them. This geometric approach allows us to also give a statement of Gauss composition, the parametrization of ideal classes of quadratic rings by binary quadratic forms, over an arbitrary base scheme. We give an analog of Bhargava’s parametrization of quartic rings over an arbitrary base scheme, including a geometric construction of a quartic ring from a pair of ternary quadratic forms that works even in degenerate cases and commutes with base change. We also give a subspace of pairs of ternary quadratic forms that parametrizes quartic rings with quadratic subrings, which includes orders in quartic fields whose Galois closure has Galois group D4.
Large enhancement of bulk spin polarization by suppressing CoMn anti-sites in Co2Mn(Ge0.75Ga0.25) Heusler alloy thin film

We have investigated the structure and magneto-transport properties of Co2Mn(Ge0.75Ga0.25) (CMGG) Heusler alloy thin films with near-stoichiometric and Mn-rich compositions in order to understand the effect of Co-Mn anti-sites on bulk spin polarization. Anomalous x-ray diffraction measurements using synchrotron radiated x-rays confirmed that CoMn anti-sites easily form in the near-stoichiometric CMGG compound at annealing temperature higher than 400 °C, while it can be suppressed in Mn-rich CMGG films. Accordingly, large enhancement in negative anisotropic magnetoresistance of CMGG films and giant magnetoresistance (GMR) in current-perpendicular-to-plane (CPP) pseudo spin valves were observed in the Mn-rich composition. A large resistance-area product change (ΔRA) of 12.8 mΩ μm2 was demonstrated in the CPP-GMR pseudo spin valves using the Mn-rich CMGG layers after annealing at 600 °C. It is almost twice of the maximum output observed in the CPP-GMR pseudo spin valves using the near-stoichiometric CMGG. Th.
Car License Plate Detection Based on Line Segments

In this paper, a new car license plate detection method based on line-segmenting is proposed. We introduce a local line-segmenting method,which is independently performed for the edges of horizontal and vertical direction, respectively. Next, we introduce the suitability check method. The proposed method can accurately detect the slightly inclined license plate.
Formulation and Characterization of Metformin Hydrochloride Floating Tablets

The objective of the research work was to provide a gastroretentive system for sustained release of metformin HCl in proximal part gastrointestinal tract (GIT) in the form of oral floating tablet. Metformin HCl is an anti-diabetic biguanid with poor bioavailability and absorption window at the upper part of GIT. Floating tablets were prepared by wet granulation method incorporating natural polymers guar gum and k-Carrageen and a synthetic polymer HPMC K100 (HPMC) either alone or in combination. Sodium bicarbonate and citric acid was used as gas generating agent. Floating tablets were evaluated for weight variation, hardness, and friability, drug content, swelling index, in vitro buoyancy and in vitro drug release study. The formulation optimized based on floating ability, matrix integrity, and in vitro drug release in simulated gastric fluid pH 1.2. Formulation prepared with combination of 6% w/w k-carrageen and 11%w/w guar gum showed good gel strength, stable and persistent buoyancy for 12h, least floating lag time of 58 sec with good matrix integrity throughout dissolution period. The drug release of optimized formulation followed the Korsmeyer– Peppas model and the mechanism was non-Fickian/anomalous. PXRD and DSC studies revealed partial amorphization of drug. The mechanism of drug release was appears to be diffusion mechanism. Stability studies indicated absence of any drug degradation on storage for 3 months at 40 o C. Comparison study with Glutamet ® showed that the optimized formulation has better and complete release than the marketed product. Studies revealed usefulness of natural polymers over synthetic one.
Spontaneous and artificial direct nanostructuring of solid surface by extreme ultraviolet laser with nanosecond pulses

Nanostructuring can be either spontaneously appearing (such as laser-induced periodic surface structures, and diffraction patterns – for example, in windows of grid proximity-standing at the ablated target-surface) or artificially created (like – as we hoped – interference patterns) that can be in some extend controlled. Due to that a new interferometer (belonging to wave-front division category) with two aspheric mirrors has been developed. Each of these mirrors reflects approximately one half of incoming laser beam and focuses it into a point image. Both focused beams have to intersect each other, and in the intersection region an interference pattern was expected. However, the first tests showed that some other spontaneously appearing interference pattern with substantially larger fringe-pitch is generated. The origin of this idle interference pattern is discussed.
MAGIC discovers VHE gamma-ray emission from the blazar 1ES 1727+502

The MAGIC Collaboration reports the discovery of Very High Energy (VHE ; E>100 GeV) gamma-ray emission from the BL Lac object 1ES 1727+502 (also known as OT546) with redshift z=0.055. The source was selected from the compilation of Costamante, L. & Ghisellini, G. 2002, A&A, 384, 56. Previous observations with the single MAGIC-I telescope yielded an upper limit on the level of 11.8% of the Crab Nebula flux above 140 GeV (J. Aleksic et al. (MAGIC Coll.), Astrophys. J. 729 (2010) 115). A total observation time of 12.5 hours was collected between 2011 May 6th to June 10th in stereoscopic mode with the two 17 m diameter imaging Cherenkov telescopes on La Palma, Canary Islands, Spain. The preliminary analysis of this data using the standard analysis chain yields a detection of 76 gamma-rays above 150 GeV, corresponding to a statistical significance of 5 standard deviations. The observed flux is estimated to be (1.7+/-0.6)% of the Crab Nebula flux above 150 GeV, well below the previous upper limit. Errors are statistical only.
Target Tracking with Random Time-delay Measurements

The problem of target tracking with the delayed measurements is investigated in this paper. In many practical applications, the measurements may be randomly delayed. In these cases, the standard Kalman Filter cannot be used directly to estimate current states. A novel algorithm based on the delayed measurement is proposed to estimate the current states. In the algorithm, the equivalent delayed measurement is presented as a function of the current state. Then the Kalman Filter which the process noise and the measurement noise are correlative has been deduced. Monte Carlo simulations have been designed and the results verify the effectiveness of the algorithm.
Application of seismic interferometry by multidimensional deconvolution to crosswell seismic reflection using singular-value decomposition

Summary Seismic interferometry is a process of generating new seismic data from existing wavefields. This enables us to expand the degree of freedom of source-receiver configuration. Seismic interferometry by multidimensional deconvolution (MDD) is proposed as an alternative to the conventional crosscorrelation method (Wapenaar et al., 2008a; Wapenaar et al., 2008b). We apply MDD to crosswell geometry in order to retrieve crosswell impulse responses from surface sources using numerical modeling and field data. We adopted singular-value decomposition (SVD) for obtaining the pseudoinverse solution to achieve MDD. Since the SVD pseudoinverse is highly dependent on the rank of the MDD matrix, Akaike's information criterion (AIC) is adopted in order to determine the rank of the MDD matrix. We see that the MDD produces higherresolution data compared with the conventional crosscorrelation method. Furthermore, amplitudes of downgoing reflection events are improved in MDD while downgoing reflection events are not recognizable in the crosscorrelation method.
Investigation on the Use of a Multiphase Eulerian CFD solver to simulate breaking waves

The main challenge in CFD multiphase simulations of breaking waves is the wide range of interfacial length scales occurring in the flow: from the free surface measurable in meters down to the entrapped air bubbles with size of a fraction of a millimeter. This paper presents a preliminary investigation on a CFD model capable of handling this problem. The model is based on a solver, available in the open-source CFD toolkit OpenFOAM, which combines the Eulerian multi-fluid approach for dispersed flows with a numerical interface sharpening method. The solver, enhanced with additional formulations for mass and momentum transfer among phases, was satisfactorily tested against an experimental bubble column flow. The model was then used to simulate the propagation of a laboratory solitary breaking wave. The motion of the free surface was successfully reproduced up to the breaking point. Further implementations are needed to simulate the air entrainment phenomenon.Copyright © 2015 by ASME
Some Identities of Tribonacci Polynomials

The Tribonacci polynomial is famous for possessing wonderful and amazing properties. Tribonacci polynomials tn(x) defined by the recurrence relation tn+3(x)=x2tn+2(x)+xtn+1(x)+tn(x) for n≥0 with to(x) =o, t1(x)=1, t2(x)=x2. In this paper, we introduce some identities Tribonacci polynomials by standard techniques.
Adaptive fuzzy control for MIMO non-affine nonlinear systems

For a class of multi-input multi-output(MIMO) non-affine nonlinear systems,an adaptive fuzzy H-infinity control scheme is proposed which combines the adaptive fuzzy control with the high gain observer.Based on the implicit function theory,the existence of an ideal non-affine nonlinear system controller,that can achieve control objectives,is firstly shown.A high gain observer is employed to obtain the unavailable states in measurement for constructing the output feedback controller.To achieve high precision,the adaptive fuzzy control scheme is designed for improving the approximation ability of the observer on-line.Finally,the simulation results are performed to demonstrate the superiority and the effectiveness of the proposed method.