Miracle-dz/UniFAR-FTUs huggingface dataset:
Group III-V semiconductors as promising nonlinear integrated photonic platforms

ABSTRACT Group III–V semiconductors are based on the elements of groups III and V of the periodic table. The possibility to grow thin-films made of binary, ternary, and quaternary III–V alloys with different fractions of their constituent elements allows for the precise engineering of their optical properties. In addition, since many III–V compounds are direct-bandgap semiconductors, they are suitable for the development of photonic devices and integrated circuits, especially when monolithic integration is required. Moreover, the strong optical nonlinearities of III–V materials enable a fertile field of research in photonic devices for all-optical signal processing, wavelength conversion, and frequency generation. Experimentally accessing the plethora of nonlinear optical phenomena in these materials considerably facilitates the exploration of light-matter interactions. Several demonstrations have explored the optical nonlinearities in waveguides, microring resonators, photonic crystal structures, quantum dots, and lasers. In this review, we survey numerous nonlinear optical studies performed in III–V semiconductor waveguide platforms. In particular, we discuss linear and nonlinear optical properties, material growth and fabrication processes, newer hybrid material platforms, and several nonlinear optical applications of III–V semiconductor integrated optical platforms. Graphical abstract
Taylor expansion method for the nonlinear evolution equations

A new numerical method of integrating the nonlinear evolution equations, namely the Taylor expansion method, was presented. The standard Galerkin method can be viewed as the 0_th order Taylor expansion method; while the nonlinear Galerkin method can be viewed as the 1_st order modified Taylor expansion method. Moreover, the existence of the numerical solution and its convergence rate were proven. Finally, a concrete example, namely, the two_dimensional Navier_Stokes equations with a non slip boundary condition,was provided. The result is that the higher order Taylor expansion method is of the higher convergence rate under some assumptions about the regularity of the solution.
MXene Film Prepared by Vacuum-Assisted Filtration: Properties and Applications

MXene (Ti3C2Tx) film prepared by vacuum-assisted filtration (V-MXene film) is the most common 2D MXene macroscopic assembly with ultra-high electrical conductivity, tunable interlayer space, diverse surface chemical properties, favorable mechanical properties and so on, showing great commercial value in the fields of energy storage, electromagnetic interference shielding and actuators and so on. This paper focuses on the preparation, properties and applications of V-MXene film, objectively reviews and evaluates the important research progress of V-MXene film in recent years and analyzes the main problems at present. In addition, the development direction and trend of V-MXene film in the future are prospected from the aspects of preparation, property control and application fields, which provide guidance and inspiration for the further development of functional MXene-based films and make contributions to the progress of MXene technology.
Accounting Beta as an Indicator of Risk Measurement: The Case of the Casablanca Stock Exchange

The problem of determining the cost of equity is crucial to the development of organizations. It is an essential means of calculating value creation. The financial literature has proposed several models for estimating the cost of equity, such as the capital asset pricing model (CAPM). However, this model is only used for listed companies, and cannot be used for unlisted companies. To remedy this situation, alternative measures of the cost of equity have emerged, such as accounting beta. The main objective of this research was to explore the relationship between market beta and accounting beta calculated using ROA, ROE and net income to demonstrate the ability of accounting beta to measure risk for unlisted companies. To carry out this study, we exploited data from a sample of 49 companies listed on the Casablanca Stock Exchange during the period of 2015–2019. We used panel data econometrics to empirically test the research hypotheses. The results show that the accounting beta calculated using ROA and ROE significantly represents the market beta and is a satisfactory solution to calculate the cost of equity of unlisted firms. The results of the study contribute to the existing literature on the cost of capital by reinforcing the role of accounting beta as a solution for determining the cost of equity and therefore the creation of value for the organization.
Methods of Beam Profile Measurements at High Current Hadron Accelerators

The precise determination of the transverse beam profile is an important issue for the operation and the development of any accelerator facility. At hadron LINACs the application of traditional intersecting methods, like wire scanners and SEM‐grids, are restricted by the high current and the related risk of material melting. At synchrotrons non‐destructive methods are favored to monitor the properties of the circulating beam. Recent developments and technical challenges for the non‐destructive devices Beam Induced Fluorescence (BIF) Monitors and Ionization Profile Monitors (IPM) are described.
On dual-asymmetry linear double AR models

This paper introduces a dual-asymmetry linear double autoregressive (DA-LDAR) model that can allow for asymmetric eﬀects in both the conditional location and volatility components of time series data. The strict stationarity is discussed for the new model, for which a suﬃcient condition is established. A self-weighted exponential quasi-maximum likelihood estimator (EQMLE) is proposed for the DA-LDAR model, and a mixed portmanteau test for goodness-of-ﬁt is constructed based on the self-weighted EQMLE. It is noteworthy that all the asymptotic properties for estimation and testing are established without any moment condition on the data process, which makes the new model and its inference tools applicable for heavy-tailed data. Since all inference tools need to estimate the unknown density function of innovations, we employ a random-weighting bootstrap method to facilitate accurate inference and show its asymptotic validity. Simulation studies provide support for theoretical results, and an empirical application to NASDAQ Composite Index illustrates the usefulness of the new model.
Spatiotemporal Heterogeneity Monitoring of Cropland Evolution and Its Impact on Grain Production Changes in the Southern Sanjiang Plain of Northeast China

High-speed cropland changes are taking place in Northeast China, bringing about the sustainable changes in ecological landscape and food production; however, the lack of continuous research limits the revelation of new findings in this region. The integrated approach of land migration tracking, ecological landscape and mathematical statistics was established to conduct a comprehensive survey of land change–landscape–food security in a typical grain-planting region of Northeast China to reveal new changes from 1990 to 2020. Results display that the cropland area continued to increase from 25,885.16 km2 in 1990 to 31,144.46 km2 in 2020, leading to the loss of forest land, grassland, water body and unused land. For cropland structure, the proportion of paddy fields in cropland increased rapidly from 7.18 to 39.53% during 1990–2020; in contrast, upland crops decreased sharply. The richness of landscape presented gradually complex characteristics with SHDI from 0.258 to 0.671 and other ecological indicators underwent similar changes with strong regularity. Total grain production displayed a continuous increase, with values from 523.79 × 104 t to 1839.12 × 104 t, increasing by 2.51 times from 1990 to 2020. We also revealed the contribution rate of unchanged upland crops to grain increments was the largest (i.e., 46.29%), and the conversion of internal cropland structure (i.e., the paddy fields converted from upland crops) contributed 12.17% from 1990 to 2020, showing a positive signal for food security. These new findings provide studies on land use change, ecological landscape and food security in China and abroad.
Shannon, Lévy, and Tsallis: A Note

The Tsallis nonextensive entropy of the statistical physics literature exactly matches the previously defined Havrda-Charvat structural α-entropy of information theory. We offer three novel results by optimizing Shannon and Havrda-Charvat entropies under different sets of conditions. The results yield generalized t-distributions that encompass the entire family of Levy stable distributions. The Tsallis distribution is found to be just one special case of the Levy, and not the other way around.
Contaminant Movement Control from Al-Mishraq Extraction Area-Numerical Approach

Al-Mishraq site was the title of many scientific types of research done due to its commercial, environmental, and groundwater pollution studies found that the pollution from the Al-Mishraq field hits soil and groundwater, eventually reaching the Tigris River. The process of hot water injection for sulfur extraction led to a change in the hydrological conditions of the area. The spread process of this water through the soil carries liquid dissolved sulfur towards the river that causes pollution of soil and river. The extent and concentration of dissolved sulfur were studied before and after proposed treatments. Also, the efficiency of these treatments would be estimated considering transport and diffusion theory in saturated/unsaturated states using the GEO-SLOPE software evaluating the extent of dissolved sulfur transfer through site soils in two cases. The first case represents the soil region without proposed treatments, and the second case represents the soil region with proposed treatments. The results show that a length of vertical barriers ranging between 180-200 m was efficient to prevent pollutants from moving. Also, the concentration and extent of contaminant spread in soil depended on the distance between vertical barriers and contamination source. Also, it found that at distances less than 300 m concentration of contaminant was high with a small range of soil, while at distances more than 300 m concentration of the contaminant was lower with a wider spread of soil.
Acute Mirror M1 Occlusions Treated With Endovascular First-Pass Contact Aspiration Technique

Patients with acute bilateral M1 occlusion are usually comatose at presentation and have a grave prognosis. There have been few reports of emergent treatment using endovascular reperfusion therapy (ERT). We describe a patient treated with simultaneous first-pass contact aspiration and review the literature for cases describing the successful use of ERT in patients with bilateral anterior circulation proximal large-vessel occlusion (LVO). A functionally independent 95-year-old woman with history of atrial fibrillation (AF) presented with altered mentation, aphasia, and weakness in all extremities. Her National Institutes of Health Stroke Scale (NIHSS) score was 13. CT angiogram and perfusion demonstrated acute mirror M1 occlusions with extensive bilateral middle cerebral artery (MCA) territory penumbra, respectively. Emergent ERT was performed with simultaneous contact aspiration within the bilateral M1s under concomitant flow arrest with a balloon guide catheter. Modified Thrombolysis in Cerebral Infarction (mTICI) grades 3 and 2c were achieved on the left and right, respectively. By postoperative day 1 (POD1), the patient had improved motor function, mentation, and communication.The technical feasibility of simultaneous contact aspiration thrombectomies for acute bilateral M1 occlusions was demonstrated with successful reperfusion of both vascular territories in a single pass lasting 28 minutes. Simultaneous thrombectomies yielded rapid recanalization and reperfusion and minimized radiation exposure. Previous cases demonstrating this technique utilized stent-retriever techniques in successive fashion, with a consequent increase in the patient’s total ischemic time. The technical success of our aggressive approach suggests it may have utility in the treatment of acute multivessel occlusions (MVOs).
Virtual reality in physical rehabilitation: a narrative review and critical reflection

Abstract Background Digital technologies are increasingly more ubiquitous with every passing year and have the potential to revolutionize how humans interact. In the realm of physical rehabilitation, the use of virtual reality (VR) is an area that has continued to see growth as a technology that could allow for new avenues of physical therapy practice. Objectives This manuscript starts with a narrative review of the emergence of virtual reality technology for use in rehabilitation and the original vision of this relationship as a means to understand its trajectory for the future. We then consider the current benefits and harms of using virtual reality technologies in the physical rehabilitation space. Major Findings VR technologies are becoming smaller and cheaper with every given year, with many new applications in physical rehabilitation (e.g. restoration of range of motion or pain control). We appear to be at a point in history where VR may be able to be successfully used on a wider scale in physical rehabilitation. The use of VR in physical rehabilitation has potential, but greater effort is required to elucidate its standardized operating procedures as well to guide the ethics in its use. Clinicians may also need to learn new competencies to implement VR effectively. Conclusions Collaboration is required between patients, clinicians, and scientists to help guide the use of VR within physical rehabilitation. This work is intended to act as a resource to clinicians and scientists in the field looking to develop a greater understanding of VR within physical rehabilitation.
Structural Regularity Aided Visual-Inertial Odometry With Novel Coordinate Alignment and Line Triangulation

Man-made buildings exhibit structural regularity, which can provide strongly geometrical constraints for Visual-Inertial Odometry (VIO) systems. To make full use of the structural information, we propose a new structural regularity aided VIO with novel coordinate alignment and line triangulation under Manhattan world assumption. The proposed VIO system is built upon OpenVINS [1] and partly based on our previous work [2]. The proposed coordinate alignment method makes the Jacobians and reprojection errors become concise but also makes the required computation number for transformations decrease. In addition, a novel structural line triangulation method is provided, in which the global orientation of a structural line is used to refine its 3D position. All the novelties result in a more accurate and fast VIO system. The system is tested on EuRoC MAV dataset and a self-collected dataset. Experimental results demonstrate that the proposed method obtains better accuracy compared with state-of-the-art (SOTA) point-based systems (VINS-Mono [3] and OpenVINS [1]), point-line-based systems (PL-VINS [4] and Wei et al. [2]), and structural line-based system (StructVIO [5]). Notably, the self-collected dataset is recorded on Manhattan world scenes, and is also full of challenging weak texture and motion blur situations. On the dataset, the accuracy of our method is increased by 40.7% compared with the SOTA point-line-based systems.
MORPHO-PHONOLOGICAL ADAPTATION OF FRENCH BORROWING IN THE ALGERIAN ARABIC DIALECT

The present paper aims at describing some forms of French adapted borrowings into the Algerian Arabic dialect. This study deals with French as donor language on the one hand, and Algerian Arabic dialect, as recipient language on the other. The collection of data is based on everyday conversations and Algerian television programs. French borrowings are used in everyday life by all Algerian counterparts. They may be adopted or adapted. The latter undergo the process of adaptation to suit the linguistic patterns of Algerian Arabic dialect. The results reveal several cases of adaptation, at the level of phonology and morphology, such as alteration, gemination, addition, omission, gender and number inflection, which occur in nouns, adjectives, and verbs. diversos tipos de adaptación a nivel fonológico y morfológico, como alteraciones, geminaciones, adiciones, omisiones, flexión de género y número, que se aplican en sustantivos, adjetivos y verbos. Aquest article té l’objectiu de descriure alguns manlleus del francès que s’han adaptat al dialecte àrab algerià. S’estudia el francès com a llengua de partida, per una banda, iel dialecte àrab algerià, com a llengua receptora, per una altra. La recopilació de dades es basa en converses quotidianes i en programes de televisió algeriana. Els algerians utilitzen els manlleus francesos en la vida quotidiana. Poden ser adoptats o adaptats. Aquests darrers se sotmeten a un procés d’adaptació per acomodar-se als patrons lingüístics del dialecte àrab algerià. Els resultats mostren diversos tipus d’adaptació a nivell fonològic i morfològic, com ara alteracions, geminacions, addicions, omissions, flexió de gènere i nombre, que s’apliquen en substantius, adjectius i verbs.
Paper Type: RE, Topic Area: M Impact of Cross Slope and Surface Type 1 Impact of Cross Slope and Surface Type on Wheelchair Propulsion

The objective of this study was to evaluate wheelchair propulsion biomechanics under cross-slope degrees and surface types. Testing course consisted of three cross-slopes (0 ̊, 1 ̊, and 2 ̊) and three types of surfaces (Blind-Guide, Teflon, and Wood). We compared biomechanics data using two-way repeatedmeasures ANOVA. The result showed that the resultant force, torque, and cadence were not significantly different between surface types and cross slope conditions. While self-selected speeds decreased with the increase of cross slope angles (p=0.026) and subjects tended to slow down on the Teflon surface. Push angle had liner decreasing relation with increasing cross slope angles and remained consistently larger among subjects on the Teflon surface. These results indicate that slight cross-slopes, slippery and rough surfaces may not result in significant biomechanics loading on a short duration. However, the difference noted between degrees and surfaces highlight the change of push pattern and decrease propulsion efficiency.
Formative Research to Inform the Development of a Healthy Eating Social Marketing Campaign in Mississippi

Mississippi leads the nation in child obesity, chronic diseases, poverty, and food insecurity. Stemming the long-term consequences of high obesity rates will require a cultural attitude and behavioral shift towards healthy eating. This study explored the perceptions, beliefs, practices, and self-efficacy towards healthy eating among limited resource Mississippi parents to inform a SNAP-Ed social marketing campaign. A statewide telephone survey was conducted with income-eligible or current SNAP recipients who provided or prepared food for children in their household. Likert-type scale questions measured intrapersonal factors, self-efficacy, and practices regarding healthy eating, such as shopping and meal planning. A total of 206 surveys were analyzed. Seventy-nine percent (n=163) of participants were currently receiving SNAP benefits. Healthy eating was perceived as balanced meals and fruits and vegetables. Though 60% agreed that cost was a barrier to eating more fruits and vegetables, 90% of participants had positive attitudes and beliefs towards healthy eating. In summary, Mississippi parents with limited resources were interested in providing healthy balanced meals but faced cost as the major barrier. A social marketing message with this population can be effective in emphasizing affordable healthy meals.
Effect of recycled TiC addition in the compaction and sintering behavior of Al-Mg-Cu-Zn + r-TiC powder metallurgy composites

Abstract The radical increase in daily use of metal matrix composites with ceramic reinforcements tangibly increases scrap, which contains valuable ceramic materials. As hard ceramic materials are cost-intensive, there is a significant necessity for their recovery and recycling at all times. This work attempts to recover valuable titanium carbide particles from a scrap of in-situ synthesized AA7075-TiC composites for reuse as reinforcements. The TiC particles were recovered by the corrosive chemical extraction method and analyzed for morphologies, such as shape, phase, and size using scanning electron microscopy, x-ray diffraction, and dynamic light scattering techniques. Further, Al-Mg-Cu-Zn powder was blended with various percentages of the recovered TiC particles to investigate the characteristics of the blends. The compressibility behavior of various blends is correlated with linear and non-linear models, which identified that the Kawakita and modified Cooper-Eaton models showed better fitness in the experimental results, which also explained the mechanisms of compressibility behavior. The extent of the effective percentage addition of recovered TiC as reinforcement in the Al-Mg-Cu-Zn alloy was identified based on the green strength obtained using the diametrical compression test. The best suitable sintering temperature was also determined using thermogravimetric analysis or differential scanning calorimetry and the estimated sinterability index.
Slave spins away from half filling: Cluster mean-field theory of the Hubbard and extended Hubbard models

A new slave-spin representation of fermion operators has recently been proposed for the half-filled Hubbard model. We show that with the addition of a gauge variable, the formalism can be extended to finite doping. The resulting spin problem can be solved using the cluster mean-field approximation. This approximation takes short-range correlations into account by exact diagonalization on the cluster, whereas long-range correlations beyond the size of clusters are treated at the mean-field level. In the limit where the cluster has only one site and the interaction strength $U$ is infinite, this approach reduces to the Gutzwiller approximation. There are some qualitative differences when the size of the cluster is finite. We first compute the critical $U$ for the Mott transition as a function of a frustrating second-neighbor interaction on lattices relevant for various correlated systems, namely the cobaltites, the layered organic superconductors and the high-temperature superconductors. For the triangular lattice, we also study the extended Hubbard model with nearest-neighbor repulsion. In additionto a uniform metallic state, we find a $\sqrt(3) \times \sqrt(3)$ charge density wave in a broad doping regime, including commensurate ones. We find that in the large $U$ limit, intersite Coulomb repulsion $V$ strongly suppresses the single-particle weight of the metallic state.