Miracle-dz/UniFAR-FTUs huggingface dataset:
New RIC Bounds for Low Rank Matrix Recovery via Schatten-p Minimization with 0 < p < 1

Abstract Low rank matrix recovery is widely applicable in many fields and has been the focus of much research recently. Schatten-p (0 < p ≤ 1) norm minimization are two main recovery methods. For case p = 1, i.e. nuclear norm minimization, there have been abundant results on exact and stable recovery conditions. The restricted isometry constants (RIC) play an important role in exact recovery theory via nuclear norm minimization. However, there are few results on Schatten-p (0 < p < 1) norm minimization. In this paper, we establish new RIC bounds to guarantee exact recovering low rank matrices via Schatten-p (0 < p < 1) norm minimization. First, we provide the RIC bound of δ[g(p,2r)](t-1) + 2r to guarantee exact recovery. Especially, the exact recovery can be succeed via Schatten-1/2 minimization if for any t > 1. Second, we obtain the RIC bound of δ2r to guarantee exact recovery. For Schatten-1/2 minimization, the bound is δ2r < 1/3. Moreover, we get the stable recovery results with bounded noise.
Differential pricing integrated with multi-product, multi-machine, multi-worker cost function for resource service providers in cloud manufacturing

Cloud manufacturing (CMfg) platform offers an open marketplace, where a Resource Service Provider (RSP) can benefit from Price Discrimination (PD) in return for specific services. However, the literature focused mainly on operator-based pricing and overlooked RSP pricing control. Therefore, this study formulates a profit function in which revenue is enhanced by adjusting prices according to customer types, while cost accounting is done by resource allocation based Material Flow Cost Accounting (MFCA) because MFCA provides a comprehensive guideline towards waste minimization. The proposed model is formulated into MINLP problem with multiple factors such as; part types, batch size, part routes, machine types, energy consumption, worker types and material handling cost as well as price sensitive customer behaviour and demand. Further, ANOVA is applied for factors analysis. The results suggests that customer types and demand are positively correlated, while parts, machines, and worker types are negatively correlated with profit. The model is also compared with reference price effect and fixed pricing strategy. Results validate that to benefit from diverse customer behaviour in CMfg, PD along with optimal resource allocation provides an effective solution for profit maximization. Model is also compared with reference price effect and fixed pricing strategy to validate its effectiveness.
Short‐Time Spectra and Time‐Frequency Energy Distributions

The squared magnitude of the cross‐ambiguity function of two signals is shown to be given by the two‐dimensional cross correlation of the individual time‐frequency (t‐f) energy distributions of the signals. This result is used to show that a short‐time spectrum measured in the usual way is the two‐dimensional convolution of the t‐f energy distribution of the signal with a function which is simply related to the t‐f energy distribution of the window which is used.
Bootstrap relative errors and sub-exponential distributions

For the purposes of this paper, a distribution is sub-exponential if it has finite variance but its moment generating function is infinite on at least one side of the origin. The principal aim here is to study the relative error properties of the bootstrap approximation to the true distribution function of the sample mean in the important sub-exponential cases. Our results provide a fairly general description of how the bootstrap approximation breaks down in the tail when the underlying distribution is subexponential and satisfies some very mild additional conditions. The broad conclusion we draw is that the accuracy of the bootstrap approximation in the tail depends, in a rather sensitive way, on the precise tail behaviour of the underlying distribution. Our results are applied to several sub-exponential distributions, including the lognormal. The lognormal case is of particular interest because, as the simulation studies of Lee and Young have shown, bootstrap confidence intervals can have very poor coverage accuracy when applied to data from the lognormal.
HEAO 1 observations of the Perseus cluster above 10 keV

We present the results of HEAO 1 observations of the Perseus cluster from 10 to 150 keV in 1977 August and 1978 February and August. The spectrum exhibits a previously unknown hard (>25 keV) component in addition to the previously known thermal bremsstrahlung emission. The data presented show no significant evidence of variability from 10.5 keV to 93.5 keV, and a comparison of our results with earlier results indicates no strong evidence for variability above 25 keV over a time scale of approx. 4 yr. If the hard-component excess is due to NGC 1275, the data imply a 2--6 keV X-ray luminosity of approx.1 x 10/sup 44/ ergs s /sup -1/ for the galaxy, or approx.15% of the total cluster emission from 2 to 6 keV and a 25--40 luminosity of approx.8 x 10/sup 43/ ergs s/sup -1/. In the context of a model of hard-X-ray emission by inverse Compton scattering of relativistic electrons on the 2.7 K background, the X-ray spectrum, in conjuction with previously reported radio data, implies a magnetic field of B>10/sup -7/ gauss.
Psychometric Properties of the Self-Compassion Scale on Saudi University Students

This study aimed to construct and validate a Saudi version of the Self-Compassion Scale (SCS). The sample included (438) students at King Saud University in three colleges; social science (humanities), science, medicine. The findings showed good validity and good reliability. The findings showed that the values of Alpha Cronbach's coefficients were large (greater than 0.7) . The values of Pearson's correlation coefficients were mostly large (greater than 0.7) and were confined between (0.530 – 0.854) in the relationship between each item degree and its subscale. Also, values of Pearson's relationship between each item degree and the degree on the scale as a whole were confined between (0.513- 0.794). Finally, confirmatory factor analysis on the self-compassion scale supported the same six-factor structure as found in the original version by Neff (2003); Self-kindness versus self-judgment, Common humanity versus isolation, Mindfulness versus over-identification. As a whole, good psychometric properties observed for the Saudi SCS version are assuring the strength of the current results.
Comparison and verification of numerical reconstruction methods in digital holography

The expressions for the reconstructed field from the sample of the diffracted wave, which is produced by illuminating an object, are found by use of different diffraction integrals in the digital holography. The numerical reconstruction methods that truncate and sample this field are compared in overlapping quality, accuracy, pixel resolution, computation window, and speed. The fast Fourier transform (FFT)-based direct integration method for the Fresnel integral and the modified FFT-based direct integration method for the Rayleigh-Sommerfeld integral have similar overlapping quality and can flexibly control pixel resolution and computation window size. Meanwhile, the FFT-based angular spectrum method is superior to the FFT-based convolution method in accuracy and speed. The experimental results are presented to verify these consequences.
No singularities in observables at the phase transition in the Dicke model

The Dicke Hamiltonian describes the simplest quantum system with atoms interacting with photons: N two-level atoms inside a perfectly reflecting cavity, which allows only one electromagnetic mode. It has also been successfully employed to describe superconducting circuits that behave as artificial atoms coupled to a resonator. The system exhibits a transition to a superradiant phase at zero temperature. When the interaction strength reaches its critical value, both the number of photons and atoms in excited states in the cavity, together with their fluctuations, exhibit a sudden increase from zero. By employing symmetry-adapted coherent states, it is shown that these properties scale with the number of atoms, their reported divergences at the critical point represent the limit when this number goes to infinity, and, in this limit, they remain divergent in the superradiant phase. Analytical expressions are presented for all observables of interest, for any number of atoms. Comparisons with exact numerical solutions strongly support the results.
Research on the Optimization Problem of Agricultural Product Logistics based on Genetic Algorithm

—China’s national development and reform commission issued the “logistics industry adjustment and revitalization plan” in 2009 to support the development of agricultural product logistics and distribution centers. China’s agricultural product logistics and distribution have entered a stage of rapid development. With the rise of the sharing economy, logistics has become a bottleneck restricting the further development of agricultural product distribution. In order to realize the effective cooperation among the main body of agricultural product logistics distribution, improve the distribution efficiency and reduce the distribution cost, a logistics distribution optimization model based on the two-layer planning idea and genetic algorithm is proposed. A two-level programming model is constructed by combining qualitative and quantitative methods, theory and examples, and insertion and deletion operators are introduced to optimize the genetic algorithm. The research results show that the optimized genetic algorithm has a 54.55% increase in convergence speed, 1.08% in performance, and a 54.231% reduction in path length compared to the benchmark algorithm. It effectively improves the efficiency of path planning and saves the planning cost, and the final target value is reduced by 48.19%.
Restricted Mean Life with Covariates: Modification and Extension of a Useful Survival Analysis Method

Abstract Karrison has presented a method for covariate-adjusted comparison of two groups with respect to survival when the group effect is expected to not be of proportional hazards form. This article describes a simplified procedure for implementing Karrison's basic approach, along with an extended version designed to achieve robustness against misspecification in the underlying analytical model. A simulation study of these techniques is presented, and the techniques are illustrated with an example taken from Karrison.
Forecasting Industrial Production

Abstract This paper analyzes the predictive performance of several forecasting techniques: (1) a leading series regression, (2) the independent components of these leading series, and (3) a diffusion index. The comparative predictive performance in forecasting the turning points of the FRB Index of Production was measured by means of lead-reliability functions. The use of lead-reliability functions requires rules for identifying true and false peaks. In applying these rules, it was shown that the estimated values of the lead-reliability relationship are sensitive to the rule which is used to identify the true turns. A comparison of the predictive performance of the three techniques shows that both the diffusion index and the independent components are better predictors than the regression.
Footwear Sketches Colorization Method based on Generative Adversarial Network

—The coloring of sketches has a constant market demand in the area of research. The difficulty of the coloring sketch outline is its lack of texture and color. Take footwear design as an example, it is difficult for designers to complete a colorful sketch in a limited time, so an artificial intelligence technology for coloring shoes is required. Though we do not build a new GAN, which is based on pix2pix. We try to integrate the existing model in four ways, including generator, discriminator, loss function and comparison. In this paper, given a set of edges-to-shoes that have 50,025 shoe images, our approach produces an image with vivid shoes images. Unlike the recent research, our approach is not based on a unique adversarial training. We show that shoe sketches can be synthesized from simple lines by a GAN into a high-resolution picture. In particular, we offer a new model to synthesize high-resolution photo-realistic images of shoes, and apply a multi-discriminator to train and distinguish the generated images. Our model enables the shoe designer to benefit from the colorization design.
Finite Element Analyses of Stresses Developed in Oil Separator Composite Tank Used in Screw Type Compressor Systems

Pressure vessels are geometrically cylindrical, spherical or conical work equipment used for the storage and transportation of pressurized fluid. In the case of design and/or manufacturing deficiency, or for the case of improper applications of such vessels due to working conditions, the damages that may occur can cause serious harm to the environment and employees. The aim of this study is to estimate the performance of a typical oil separator pressure vessel used in screw compressor systems, exposed to high pressure and temperature, using finite element method. Here, the aim is to estimate performance of this tank after modifications in design and to compare the results with that of pressure vessel designed using conventional materials. The inner liner of the separator tank is metal material and the other layers are wrapped with three different composite materials, including carbon fiber/epoxy, glass fiber/epoxy and kevlar fiber/epoxy, at different angles, and then were exposed to high pressures in the environment of finite element simulation software. As a result of the study, stress and deformation values were examined and the most suitable material and orientation angle for the composite pressure vessel were decided.
THE IMPACT OF DOMESTIC INVESTORS’ PARTICIPATION IN GOVERNMENT DEBT ON BANK LOANS TO THE PRIVATE SECTOR: A CROSS-COUNTRY STUDY

This study analyzes the impact of domestic investors’ participation in government debt on bank loans to the private sector in advanced and emerging countries. We find that domestic bank participation in government debt has a more profound negative impact on bank loans to the private sector in advanced than in emerging countries. Meanwhile, domestic non-bank participation in government debt only negatively impacts bank loans to private sector in emerging countries. While both domestic bank and non-bank participation in government debt have a negative impact on bank loans to the private sector in emerging countries, the latter has a weaker impact.
Stochastic processes having fractional order nonlinearity associated with hyper Gamma distribution

Stochastic processes with fractional order nonlinearity that give rise to the hyper Gamma distribution are demonstrated. Nonlinear mathematical structures necessary for the appearance of the hyper Gamma distribution are also exhibited for one, two, three-dimensional systems. Information geometrical relations for their associated nonlinear Langevin equations are displayed, and their physical significance is discussed in conjunction with the fluctuation–dissipation theorem for the Langevin equations.
Physical functions associated with health-related quality of life in older adults diagnosed with knee osteoarthritis

[Purpose] The present study aimed to identify the physical functions associated with health-related quality of life in older adults with knee osteoarthritis. [Participants and Methods] A total of 132 participants were included in this study in two groups: the knee osteoarthritis group (n=66) and the control group (n=66). We compared the results of the Medical Outcomes Study 36-Item Short-Form Health Survey with the physical function measures related to health-related quality of life. In the knee osteoarthritis group, we examined the relationship between the degree of knee pain and health-related quality of life. [Results] The knee osteoarthritis group showed a significantly shorter one-leg standing time, lower maximum walking speed, and significantly longer time to complete the Sit-to-Stand-5 and Timed Up and Go tests than the control group. The knee osteoarthritis group had significantly lower 36-Item Short-Form Health Survey scores than the control group on seven subscales and significantly lower scores for physical component summary and role or social component summary. In the knee osteoarthritis group, physical component summary and role or social component summary were correlated with Sit-to-Stand-5, Timed Up and Go, and maximum walking speed. We observed a correlation between physical component summary and knee pain on joint loading. [Conclusion] In older adults with knee osteoarthritis, rehabilitation approaches aimed at achieving a smooth transition from sitting to standing may increase social participation and improve health-related quality of life.
SPRAT: Spectrograph for the Rapid Acquisition of Transients

We describe the development of a low cost, low resolution (R ~ 350), high throughput, long slit spectrograph covering visible (4000-8000) wavelengths. The spectrograph has been developed for fully robotic operation with the Liverpool Telescope (La Palma). The primary aim is to provide rapid spectral classification of faint (V ∼ 20) transient objects detected by projects such as Gaia, iPTF (intermediate Palomar Transient Factory), LOFAR, and a variety of high energy satellites. The design employs a volume phase holographic (VPH) transmission grating as the dispersive element combined with a prism pair (grism) in a linear optical path. One of two peak spectral sensitivities are selectable by rotating the grism. The VPH and prism combination and entrance slit are deployable, and when removed from the beam allow the collimator/camera pair to re-image the target field onto the detector. This mode of operation provides automatic acquisition of the target onto the slit prior to spectrographic observation through World Coordinate System fitting. The selection and characterisation of optical components to maximise photon throughput is described together with performance predictions.
Modelling Time-varying Bond Risk Premia for Utilities Industry

This paper offers an alternative method for modelling bond risk premia for a panel of corporate bond yields using a daily data set for 48 corporate bonds of utilities industry over four years. This is done by using proxies for default, liquidity and interest rate factors that we get employing Fama and MacBeth two step procedure. In the meanwhile, the investors' learning process is mimicked by the Kalman filter procedure that is introduced to capture the dynamics of bond risk premia that are driven by multiple factors. In particular, we show that with time varying risk premia, our model performs much better in explaining our panel of bond returns when compared with the famous Fama-MacBeth two step procedure and rolling regression procedure, that are commonly used in the finance literature due to its merits of simplicity and clarity.
Long-wavelength (λ≈ 12- 16 μm) and cascaded transition quantum cascade lasers

Long-wavelength (λ ≈ 12 - 16 μm) Quantum Cascade (QC) lasers are crucial devices for improving the detection sensitivity of QC-laser based sensing for important gases including BTEX (benzene, toluene, ethylbenzene, and xylenes) or uranium hexafluoride. A high-performance QC laser emitting at ~ 14 μm is reviewed, optimized by employing a diagonal optical transition and a “two-phonon-continuum” depletion scheme. It shows a low threshold current density of 2.0 kA/cm2, a peak power of 336 mW, all at 300 K, as well as a high characteristic temperature ~ 310 K over a wide temperature range around room temperature (240- 390 K). Single-mode operation is demonstrated with short cavities, with a mode-hop-free continuous tuning range of ~ 5.5 cm-1. The ridge-width dependence of threshold of ~ 14 μm QC lasers by both wet etching and dry etching is studied. The main challenge for narrowing wet-etched ridges is the high loss caused by mode coupling to surface plasmon modes at the insulator/metal interface of sloped sidewalls. Conversely, dryetched ridges avoid surface plasmon mode coupling due to the absence of transverse magnetic polarization for the vertical insulator and metal layers. To further improve the efficiency of QC lasers, a same-wavelength cascaded transition approach is developed, with two sequential cascaded transitions at the same wavelength ~ 14.2 μm in each stage. This same-wavelength cascaded-transition QC gain medium was inserted between two conventional QC stacks at the same wavelength. Slope efficiency is increased by 46% when laser operation changes from the single-transition region to the cascaded-transition region.
Dynamic Light Settings as Data Augmentations for Automated Scratch Detection

—The manufacture of plastic parts requires a rigor- ous visual examination of its production to avoid the shipment of some that would be defective to its customers. In an attempt to ease the detection of scratches on plastic parts, the prototype of a computer-assisted visual inspection system was developed. The aim of this paper is to introduce how we explored ways to design a semi-automatic system comprising of a lamp whose orientations and intensities help in revealing irregularities on subjects that would have been missed with a unique light configuration. This process was qualified as “hardware data augmentation”. The pictures collected by our system were then used to train several convolutional neural networks (YOLOv4 algorithm/architecture). Finally, the performances of their models were confronted to evaluate the effects of the different light settings, and deduce which parameters are favourable to capture datasets leading to robust defect detection systems.
Adipose mesenchymal stem cell-based therapy: Anticancer molecular mechanisms in hepatoma model and bone marrow

Background : Adipose-derived mesenchymal stem cells (AD-MSCs) can be used as therapeutic agents for the treatment of patients with HCC Aim: The study aimed to establish an animal model for hepatocellular carcinoma (HCC) by using diethyl nitrosamine (DEN) and carbon tetrachloride (CCl 4 ) in a short time. Materials and Methods: Forty-five female rats were subdivided into three groups: control (G1), HCC model (G2), and therapeutic (G3). Each rat in the G2 groups was injected with DEN and after 1 week was injected again with CCl 4 , whereas G3 rats were injected with AD-MSCs immediately after the tumor appeared. Results: The injection of DEN/CCl 4 was correlated with the increase in alanine transaminase, aspartate aminotransferase, and alpha-fetoprotein levels. Also, it caused oxidative stress as indicated by an increase in nuclear factor-erythroid factor 2-related factor-2 (Nrf2), vascular endothelial growth factor levels, and fibrosis. However, BCL2-associated X protein (BAX) was decreased. Transplantation of AD-MSCs induced apoptosis by increasing BAX and decreasing Nrf2 levels, which significantly inhibited angiogenesis. Histologically, our results indicated that AD-MSCs alleviated hepatocellular carcinoma, fibrosis, and nuclear morphology. Additionally, the bone marrow (BM) maturation index ratio parameter was restored to a normal stage. Conclusion: AD-MSCs have a wide range of targeted anticarcinogenic properties and can regenerate BM precursors of cellularity.