Miracle-dz/UniFAR-FTUs huggingface dataset:
Zeros of the Partition Function for the Heisenberg, Ferroelectric, and General Ising Models

The Lee‐Yang theorem for the zeros of the partition function of a ferromagnetic Ising model with real pair spin interactions is extended to general Ising models with complex many‐spin interactions (satisfying appropriate ``ferromagnetic'' and spin inversion symmetry conditions). When many‐spin interactions are present, all zeros lie on the imaginary Hz‐axis for sufficiently low (but fixed) T, but, in general, some leave the imaginary axis as T → ∞. The extended Ising theorem is used to prove the same result for a Heisenberg system of arbitrary spin with the real anisotropic pair interaction Hamiltonian Hij=−(JijzSizSjz+JijxSixSjx+JijySiySjy) in an arbitrary transverse field (Hx, Hy) under the ``ferromagnetic'' condition Jijz≥|Jijx| and Jijz≥|Jijy|. The analyticity of the limiting free energy of such a Heisenberg ferromagnet and the absence of a phase transition are thereby established for all (real) nonzero magnetic fields Hz. The Ising theorem is also applied to hydrogen‐bonded ferroelectric models to pr.
Nonlinear drift tearing modes

It is shown analytically and with a numerical code that the nonlinear growth and saturation of magnetic islands in tokamaks are not affected by diamagnetic corrections. Diamagnetic effects change the linear growth and introduce mode rotation, which persists in the nonlinear regime. The analysis is used to construct a model for the effect of feedback stabilization schemes in the nonlinear regime.
Intersubband relaxation dynamics inGaN∕AlNmultiple quantum wells studied by two-color pump-probe experiments

We have investigated intersubband relaxation in $\mathrm{Ga}\mathrm{N}∕\mathrm{Al}\mathrm{N}$ multiple quantum wells using a two-color pump-probe technique in a wide energy range around $800\phantom{\rule{0.3em}{0ex}}\mathrm{meV}$ $(1.55\phantom{\rule{0.3em}{0ex}}\ensuremath{\mu}\mathrm{m})$. We have observed not only absorption bleaching signals but also, for the first time, induced absorption signals with an ultrafast and a slow component. Absorption bleaching signals are attributed to a phase space filling of the upper subband and a carrier cooling process in the lower subband, with relaxation times of $140\phantom{\rule{0.3em}{0ex}}\mathrm{fs}$ and $300\char21{}400\phantom{\rule{0.3em}{0ex}}\mathrm{fs}$, respectively. The ultrafast induced absorption corresponds to the absorption of electrons during intra-subband relaxation and the slow component of $1.3\phantom{\rule{0.3em}{0ex}}\mathrm{ps}$ corresponds to the carrier cooling process. We have also found that the intrinsic absorption width of highly doped materials is as large as the inhomogeneous width, because the dispersion difference of subbands is enhanced by exchange interaction.
Travel time denoising in ultrasound tomography

Accurate time delay estimation is critical for a wide range of remote sensing applications. We propose a technique that exploits the redundancy between absolute and relative time delays in transducer arrays as a means to reduce the level of noise present in the measurements. We formalize the problem of interest and present two different strategies to solve it. The first strategy is optimal in the mean square sense but requires a quadratic programming solver. The second approach is based on a sub-optimal iterative denoising technique. The effectiveness of our approach is demonstrated in the context of travel time tomographic imaging using numerical and physical breast mimicking phantoms as well as patient data.
Underwater Acoustics Session 1 pUW : Seabed Scattering : Measurements and Mechanisms II 1 pUW 7 . Inversion of seabed acoustic parameters in shallow water using the warping transform

In this paper, a method is described for inverting geoacoustic parameters of the seabed from short range field data recorded by single hydrophone. The original data in time domain are processed by a warping operator at first, and then the dispersion curve and the mode amplitude ratios are extracted separately from the warped data. The velocity and the density in the bottom are inverted from the dispersion curve, and the attenuation from the mode amplitude ratios, respectively. The performance of the method is examined using simulated data and then experimental data from the North Sea of China. The source used in the experiment was a small explosive charge that provided good signal to noise ratio over the frequency band from 200 Hz to 1 kHz. The depth of the water was about 30m, and the water sound speed was nearly constant with depth. The seabed geoacoustic parameters are inverted from the data received at different ranges from 2 to 14 km. The results from the different ranges are consistent with a simple half space model of the bottom. The seabed velocity is about 1600 m/s.
The numerical realization of the probe method for the inverse scattering problems from the near-field data

In this paper, we present some results on the numerical realization of the probe method for the inverse scattering problem of determining an obstacle with impedance boundary condition from the near-field data. The keys are how to construct the Runge approximate function for the fundamental solutions and compute the indicator function for the boundary of an obstacle. We test the performance of the probe method for a 2D obstacle by taking the simulated Dirichlet-to-Neumann map as inversion input data.
Metaphorical Transfers in the Azerbaijani and English Languages in Publicistic Texts

<p><strong><em>The purpose of the study</em></strong><em> is to identify current trends in metaphorical transfers in publicistic texts in Azerbaijani and English languages. </em><em></em></p><p><strong><em>Research methodology. </em></strong><em> In the course of the research, during the elaboration of the theoretical achievements of scholars the methods of analysis, synthesis, generalization, systematization were used; the method of comparison was used for identification of common and different in journalistic texts in Azerbaijani and English. The study is based on the theory of cognitive linguistics, according to which transfers are both linguistic and philosophical acts. </em></p><p><strong><em>Results. </em></strong><em> The article deals with metaphorical transfers in Azerbaijani and English. They apply to all people, regardless of their race or nationality. Linguistic sources of the outlined subject are analyzed. Human consciousness is able to maintain an infinite system of associations. As a rule, the conceptualization of different branches of knowledge based on metaphorical transfer is based on logical-syntactic and semantic frameworks of language. Metaphorical transfers, according to the theory of cognitive linguistics, are both linguistic and philosophical actions. The rationale for such provisions is presented in Western linguistics, modern research has confirmed that metaphorization is the result of intellectual activity, and its manifestation is the structure of the language. As for the human imagination, which usually has infinite limits, it is able to create the most complex cognitive models. These models of transfer, which are part of cultural thinking, are expressed through language. At the same time, people share the same cognitive models because they have similar life experiences. The article shows that metaphorical transfers in Azerbaijani and English languages are practically indistinguishable or have slight variations. </em></p><p><strong><em>Novelty. </em></strong><em> It is demonstrated by concrete examples that in the minds of all people there is a common metaphorical model and that forms of expression change depending on the interlocutors. </em></p><p><strong><em>Practical importance. </em></strong><em> The results obtained may be of interest to media language researchers and lecturers of philology and journalism. </em></p><p><strong><em>Key</em></strong><strong><em> </em></strong><strong><em>words</em></strong><em>: English language, Azerbaijani language, cognitive linguistics, metaphorical transfer, publicistic text. </em></p>
An Web Service Recommendation Method Based on Location and Decomposition Machine Model

: With the increasing number of Web services with similar functions on the Internet, traditional collaborative filtering service recommendation methods may encounter problems such as data sparseness, cold start, and poor scalability. To solve the above problems, this project proposes a new Web service recommendation method based on the decomposition machine model. The method decomposes the user trust relationship matrix and the product rating matrix while adding the geographic location information of the service, and transforms the correlation matrix of the calculated user feature vector and item feature vector into the same latent factor space by means of a decomposition machine. Optimize training model parameters to provide users with accurate prediction scores. The ultimate purpose of QoS prediction is to recommend high-quality services to users, improve the efficiency of users' discovery and selection of high-quality services, and ultimately promote the utilization of network Web services and promote service providers to release higher-quality services. Scientific significance, but also has better application value.
Rupture repair as change process and therapist challenge (Reparación de rupturas como proceso de cambio y desafío para el terapeuta)

ABSTRACT Our practice-based research programme has devoted itself to the study of how psychotherapy works for over 30 years. It has focused on how to negotiate the therapeutic alliance: more specifically, on rupture resolution as a critical change process in psychotherapy. Rupture refers to moments in which the patient and therapist experience a disagreement in the tasks and goals of treatment, a deterioration in their emotional bond or a breakdown in the intersubjective negotiation of their needs. Resolution (or repair) refers to the dyadic process that patient and therapist engage in to restore the alliance and to effect a new or corrective emotional experience. Our research has not only sought to provide further definition to this process but has striven to define and evaluate training for psychotherapists to be better able to identify ruptures and resolve them. We will provide some review of the evidence-based change process literature and the cognitive, emotion and social sciences that have informed our programme, concluding with a brief introduction to our research on clinical practice.
A 21-Year Review of Research on the Effect of Internationalization on Firm Financial Performance and Research Agenda

The objective of this paper is to review the effect of internationalization on firm financial performance and to propose a research agenda in the international business field. By systematically searching the relevant database, twenty-five related studies published in journals indexed in the Web of Science - Clarivate Analytics and Scopus in the period from 1998 to 2019 - were selected and reviewed. The study applied the meta-analysis method to detect the limitations of prior studies. Reviewing results reveal that most of the empirical studies concluded the positive effect of firms’ internationalization on their financial performance; while the nonlinear (U-shaped, or inverted U-shaped or S-shaped) relationship was confirmed by others. Building upon such research gaps, the study proposes research model for such a relationship and the moderating role of state ownership and CEO duality on the association to improve the robustness of future studies in the field by integration.
Investigating Digital Addiction Level of Pre-Service Teachers

Studies investigating the adverse effects of digital addiction on individuals have increased significantly in recent years. However, there are limited number of studies in the literature concerning pre-service teachers, who play a significant role in raising the future generation. In this study, pre-service teachers' digital addiction level was examined in terms of some relevant variables. The study was designed as a cross-sectional survey model. The convenience sampling method was preferred in determining the participants. 308 pre-service teachers studying in various departments of universities constituted the participants of the study. In the study, "Personal Information Form" and "Digital Addiction Scale" were used as data collection instruments. For data analysis, ANOVA, Mann-Whitney U test, Kruskal Wallis H, and Post HOC (LSD) tests were used. It was concluded in the study that the digital addiction level of pre-service teachers obtained no statistically significant difference with respect to gender, age, academic level, and internet skills, while a statistically significant difference was found with respect to departments, duration of daily internet use, and duration of access to social networks.
Activity and stability studies of H-transfer reduction reactions of aldehydes and ketones over aluminium isopropoxide heterogenised catalysts

Aluminium isopropoxide Al(OiPr)3 immobilised on various mesoporous supports (SiO2, TiO2 and γ-Al2O3) was tested for H-transfer reductions of various aldehydes and ketones in the presence of 2-propanol as a sacrificial agent. The heterogenised catalysts were characterised by N2 physisorption, XRD, SEM-EDX, FTIR and ICP-OES. The characterisation results show a successful grafting of the homogeneous aluminium isopropoxide catalyst, covalently bound to the solid surface, with high dispersion over the mesoporous supports. The heterogenised catalysts show an excellent catalytic activity with high selectivity towards the desired alcohol product, with performances that are comparable with those of the homogeneous Al(OiPr)3 catalyst. Al(OiPr)3 grafted on SiO2 shows higher activity compared to γ-Al2O3 and TiO2 supported catalysts. The catalysts remain very active after 5 cycles of reuse and no leached Al(OiPr)3 was found in the reaction mixture, hence showing an excellent stability. The work reported here shows that it is possible to effectively immobilise catalytic functions, usually working in the homogeneous phase, over solid supports, with the resulting heterogenised catalysts keeping the same catalytic activity of the homogeneous counterpart and excellent stability, and with the advantage of being able to recycle and reuse them, without loss of catalytic materials.
Current neutralization of ion beam rotating and propagating in plasma

The current-neutralization fraction of a rotating and propagating light ion beam (LIB) injected into a low density plasma is investigated numerically. The beam space charge is essentially neutralized by a redistribution of the background plasma electrons in a time duration equal to the inverse of electron plasma frequency. When the density of the background plasma is comparable with that of the beam, incomplete current neutralization occurs because the strong magnetic field induced by the intense ion beam restricts the return plasma current. In the simulation, the ion beam and the background plasma are treated as the fluids coupled with Maxwell's equations and Ohm's law, including the effect of the magnetic field on electrical conductivity. The calculations assume that the ion beam is injected in an unsteady fashion into the uniform plasma. It is found that the return current strongly depends on the density of the background plasma. The beam deceleration and the acceleration of the beam head and tail are also considered.
Study of the Possibilities of Improving Maintenance of Technological Equipment Subject to Wear

The rapid development of science and technology, and the restructuring of the mining extraction industry, bring about profound changes in the structure and complexity of technological equipment used in mining. In this paper, the Reliability Centered Maintenance (RCM) method has been applied to analyze the components of the KSW-460NE shearer machine, which fails quite frequently. The cutter drums do not match from a constructive point of view, and the concrete operation conditions, alongside the picks (being in direct contact with coal and hard inclusions) and guides are submitted to intense abrasion wear, showing a great number of failures. The data collected following the machine’s exploitation allowed parameter determination characterizing the reliability of the components mentioned, the manner of failure, and the effects. Using calculation methods, it has been possible to facilitate the interpretation of the result in view of establishing measures required to improve maintenance of the dominant components of the machine, determining replacement intervals, in accordance with an imposed reliability and maintainability. The results of the study assist in the choice of suitable hardening materials for the reconditioning of cutter drums and guides that are necessary for practical trials, by which their operating times, and replacement intervals, respectively, might be additionally improved.
The Examination of the Wien’s Displacement Constant with Simulation and Simple Numerical Approaches

The purpose of this research was to examine the value of the Wien’s constant using PhET Simulation virtual laboratory and simple numerical approach. The independent and dependent variable is blackbody temperature (T) and maximum wavelength (λ_max). In the use of a virtual laboratory, research is carried out by shifting the black body temperature feature so the graph will display a spectral power density that varies to the wavelenght. Numerical approach was used in this research is Newton Raphson methods by Python program. Both of simulation and numerical approach yield the value of the maximum wavelength (λ_max) for a black body temperature variation. The black body temperatures and their appropriate maximum wavelength data then analyzed using linear regression. Final result show that value Wien’s constant using PhET is 2,93 × 10-3 mK with relative error obtained is 1,07 % while using Newton Raphson the Wien’s constant value obtained is 3,07 × 10-3 mK with relative error is 5,90 %. The two approachs carried out produce data that slightly different, but still in a very good accucracy range when compared with theory. So, PhET Simulation and Newton Raphson methods effective to examine the value of the Wien’s constant.
Lateglacial and Early Holocene palaeoenvironmental change and human activity at Killerby Quarry, North Yorkshire, UK

The hunter‐gatherers that entered the British peninsula after ice‐retreat were exploiting a dynamic, rapidly changing environment. Records of vegetation change and human occupation during the Lateglacial to Early Holocene in northern Britain are more commonly found at upland and cave sites. However, recent research highlights many areas of the Swale–Ure Washlands that preserve extensive environmental sequences in low‐lying ice‐wastage basins, channels and depressions. The Lateglacial–Early Holocene environment of Killerby Quarry, North Yorkshire, is investigated here using a multi‐proxy approach of sedimentary ancient DNA (sedaDNA), pollen, sedimentological (geochemistry and portable optically stimulated luminescence), and rare and well‐preserved archaeology (Lavvu structures and lithics). Results show that the wetland basins and kettleholes were small lakes or ponds in the Lateglacial surrounded by sedge‐fen and birch woodland. A gradual (centennial scale) succession to reed‐swamp and then marsh is seen by the Early Holocene. This environment formed the resource‐scape for hunter‐gatherer transitory settlement in both the Lateglacial (Late Upper Palaeolithic) and Holocene (Early Mesolithic), attracted by the rich communities of pond‐related flora and fauna as well as easy strategic landscape access by way of the River Swale, an arterial route through the landscape connecting the North Sea Basin with the Pennine uplands via the palaeolakes around Killerby.
Ratiometric Zinc Biosensor Based on Bioluminescence Resonance Energy Transfer: Trace Metal Ion Determination with Tunable Response

Determination of metal ions such as zinc in solution remains an important task in analytical and biological chemistry. We describe a novel zinc ion biosensing approach using a carbonic anhydrase–Oplophorus luciferase fusion protein that employs bioluminescence resonance energy transfer (BRET) to transduce the level of free zinc as a ratio of emission intensities in the blue and orange portions of the spectrum. In addition to high sensitivity (below nanomolar levels) and selectivity, this approach allows both quantitative determination of “free” zinc ion (also termed “mobile” or “labile”) using bioluminescence ratios and determination of the presence of the ion above a threshold simply by the change in color of bioluminescence, without an instrument. The carbonic anhydrase metal ion sensing platform offers well-established flexibility in sensitivity, selectivity, and response kinetics. Finally, bioluminescence labeling has proven an effective approach for molecular imaging in vivo since no exciting light is required; the expressible nature of this sensor offers the prospect of imaging zinc fluxes in vivo.
The Small Ice Cap Instability in Diffusive Climate Models

Abstract Simple climate models employing diffusive heat transport and ice cap albedo feedback have equilibrium solutions with no stable ice cap smaller than a certain finite size. For the usual parameters used in these models the minimum cap has a radius of about 20 degrees on a great circle. Although it is traditional to remove this peculiar feature by various ad hoc mechanisms, it is of interest because of its relevance to ice age theories. This paper explains why the phenomenon occurs in these models by solving them in a physically appealing way. If an ice-free solution has a thermal minimum and if the minimum temperature is just above the critical value for formation of ice, then the artificial addition of a patch of ice leads to a widespread depression of the temperature below the critical freezing temperature; therefore, a second stable solution will exist whose spatial extent is determined by the range of the influence function of a point sink of heat, due to the albedo shift in the patch. The rang.
Flexible Antenna Sensor in Thumb Spica Splint for Noninvasive Monitoring of Fluctuating Blood Glucose Levels

Antenna is used as a sensor in wearable technology because of its small size. Reduced flexible antenna size avoids mounting problems and crumbling effects on the human skin region during signal acquisition. Moreover, continuous diabetes monitoring needs an efficient antenna sensor design. In this article, we develop a continuous glucose monitoring device using a flexible antenna sensor planted inside the thumb spica splint glove. The flexible antenna sensor comprises polyimide substrate with <inline-formula> <tex-math notation="LaTeX">$\xi _{r}$ </tex-math></inline-formula> = 3.5, tan<inline-formula> <tex-math notation="LaTeX">$\delta $ </tex-math></inline-formula> = 0.0027, and a thickness of 0.1 mm. The proposed flexible antenna sensor senses dielectric radiations from glucose in the blood and improves the accuracy of glucose-level prediction. Traditional antenna sensor methods use skin layers and muscles as sources of permittivity, resulting in errors in diabetic value measurement. The acquired antenna sensor signal from the designed thumb spica splint glove is processed using the tunable <inline-formula> <tex-math notation="LaTeX">${Q}$ </tex-math></inline-formula>-factor wavelet transform (TQWT) algorithm. It differentiates the dielectric properties of glucose in the blood, skin, and muscle through subband energy levels. The subband energy level of glucose from the proposed antenna sensor and the quadratic regression algorithm is used to predict the human glucose level. The predicted glucose levels using the proposed flexible antenna are validated through Accu-Chek Active Glucometer. From experimental results, the proposed method-based glucose prediction-level accuracy achieved about 96.8% compared to traditional methods.