Miracle-dz/UniFAR-FTUs huggingface dataset:
Three-dimensional river bed forms

Abstract The linear stability of a uniform flow in an infinitely wide erodible channel is investigated with respect to disturbances of the bed that are periodic in both the transverse and the longitudinal directions. A rotational flow and sediment transport model, originally developed to study the formation of two-dimensional dunes and antidunes, is straightforwardly extended to cover variations in the lateral direction. Sediment is assumed to be transported as bed load, disregarding the role of suspension. Following a standard linearization procedure, a dispersion relationship is obtained that expresses the growth rate and the celerity of the sand wave as a function of the streamwise and spanwise wavenumbers and of the relevant flow and sediment parameters. Regions of instabilities in the space of the parameters are found, which can be associated with bed forms of different kinds, spanning from dunes and antidunes to alternate bars. Therefore, the present theory allows for a unified view of the formation of two- and three-dimensional bed forms in rivers in terms of the relevant flow and sediment parameters.
Superconductivity of NbSe2 to 140 kbar

The superconducting transition temperature of NbSe2 has been measured as a function of hydrostatic pressure to 20 kbar and quasihydrostatic pressure to 140 kbar. At first, Tc increases rapidly, but by 35kbar the rate of increase has fallen by an order of magnitude from its initial value and then remains constant to the maximum pressure. It is suggested that this change in slope is associated with the phase change which occurs in the vicinity of 33 kbar at room temperature and that Tc is related to the interlayer spacing.
Structural Analysis of Social Data: A Guide to Ho's Galois Lattice Approach and a Partial Respecification of Q-Analysis

A pedagogic exposition of Ho's Galois lattice approach for analysing social data is given in this paper. This provides a basis for respecifying Atkin's Q-analysis in a way that is believed to be more powerful, more economical, and accessible to a wider audience. Concepts of traffic and eccentricity are reexamined, but more generally, the suggested respecification may enhance the utility of Q-analysis and broaden its applicability, while remaining true to its underlying ethos.
Modeling Nonlinear Structural Equation Models: A Comparison of the Two-Stage Generalized Additive Models and the Finite Mixture Structural Equation Model

Researchers have devoted some time and effort to developing methods for fitting nonlinear relationships among latent variables. In particular, most of these have focused on correctly modeling interactions between 2 exogenous latent variables, and quadratic relationships between exogenous and endogenous variables. All of these approaches require prespecification of the nonlinearity by the researcher, and are limited to fairly simple nonlinear relationships. Other work has been done using mixture structural equation models (SEMM) in an attempt to fit more complex nonlinear relationships. This study expands on this earlier work by introducing the 2-stage generalized additive model (2SGAM) approach for fitting regression splines in the context of structural equation models. The model is first described and then investigated through the use of simulated data, in which it was compared with the SEMM approach. Results demonstrate that the 2SGAM is an effective tool for fitting a variety of nonlinear relationships between latent variables, and can be easily and accurately extended to models including multiple latent variables. Implications of these results are discussed.
Improved Mass-Independent Dunham Parameters for the Ground State of CO and Calibration Frequencies for the Fundamental Band

Abstract New mass-independent Dunham parameters for the X 1 Σ + ground state of the CO molecule have been deduced from a complete set of existing frequency measurements dealing with the isotopic species of CO. This work improves the results of the 1992 evaluation ( J. Mol. Spectrosc. 160 , 590-592, 1993) by including recent sub-Doppler frequency measurements on the CO fundamental and first hot band (to be published). The parameters given in this paper allow reproduction of nearly all the frequency measurements within their experimental uncertainties, which are close to 20 kHz for the fundamental band and about 100 kHz for the (2-1 ) band transitions. Calculated line positions for the (1-0) bands of Several isotopomers are given.
Prediction of Concrete Compressive Strength by Evolutionary Artificial Neural Networks

Compressive strength of concrete has been predicted using evolutionary artificial neural networks (EANNs) as a combination of artificial neural network (ANN) and evolutionary search procedures, such as genetic algorithms (GA). In this paper for purpose of constructing models samples of cylindrical concrete parts with different characteristics have been used with 173 experimental data patterns. Water-cement ratio, maximum sand size, amount of gravel, cement, 3/4 sand, 3/8 sand, and coefficient of soft sand parameters were considered as inputs; and using the ANN models, the compressive strength of concrete is calculated. Moreover, using GA, the number of layers and nodes and weights are optimized in ANN models. In order to evaluate the accuracy of the model, the optimized ANN model is compared with the multiple linear regression (MLR) model. The results of simulation verify that the recommended ANN model enjoys more flexibility, capability, and accuracy in predicting the compressive strength of concrete.
Particle simulations of ionospheric injection experiments : comparison with CRIT II

The authors present the results of a one dimesional simulation of the barium release experiment CRIT II, done by means of a particle-in-cell code. Their objective was to try to explain features of the observed ion spectra which have not been explained by earlier models. They are able to model the original passage of barium ions past the detector, which is viewing perpendicular to the ambient magnetic field. In addition they are able explain later ion burst by assuming acceleration mechanisms due to electric fields generated as a result of the gas injection into the background plasma in the ionosphere.
The Effectiveness of Health-promoting Lifestyle Training on Health-related Hardiness and Hope in Patients With Cardiovascular Diseases

Background: In addition to physical problems, patients with cardiovascular diseases face psychological problems that reduce their control over the disease. The present study aimed to investigate the effectiveness of health-promoting lifestyle (HPL) training on health-related hardiness and hope of patients with cardiovascular diseases in Ahvaz, Iran. Methods: This was a quasi-experiment study with a pre-test-post-test control group design. The statistical population included all patients with cardiovascular disease who were referred to Golestan Educational and Therapeutic Hospital affiliated with the Ahvaz Jundishapur University of Medical Sciences, Iran, in the winter of 2021-2022. The research sample included 40 participants who were selected after examining the inclusion criteria of the research through convenience sampling. The subjects were randomly assigned into the experimental and control groups (n=20). The experimental group underwent eight 90-minute sessions of HPL training. During this time, the control group received no training. The research instruments included the demographic information form, the Revised Health Hardiness Inventory (RHHI-24), and the Adult Hope Scale (AHS). The data were analyzed using the multivariable analysis of covariance (MANCOVA) by SPSS software, version 19 at a significance level of 0.05. Results: The Mean±SD of the post-test scores of health-related hardiness and hope in the experimental group were 54.45±6.68 and 23.40±3.63, respectively, which was significantly different from the pre-test scores (P<0.001). The experimental and control group had a significant difference regarding health-related hardiness and hope (P<0.001). Conclusion: Health specialists are recommended to utilize HPL training together with other training methods to improve health-related hardiness and hope of patients with cardiovascular diseases.
Magnetic signatures of Kelvin‐Helmholtz vortices on Saturn's magnetopause: Global survey

Saturn's rapid rotation combined with relatively weak magnetic fields in the outer magnetosphere and sheath lead to conditions that are favorable for the Kelvin‐Helmholtz (KH) instability. A Kelvin‐Helmholtz unstable magnetopause boundary has important consequences for Saturn's interaction with the solar wind due to mass, momentum, and energy transport that can occur at the magnetopause boundary. Previous attempts to identify vortices have been hampered by limited plasma data to unambiguously reveal vortical flow. The magnetic field data, on the other hand, may be able to identify the KH instability due to intense magnetic fluctuations that are associated with KH vortices. We have conducted two‐dimensional hybrid code simulations of Saturn's magnetopause boundary to illustrate the expected magnetic field signatures of KH. Specifically, our simulations show strong field‐aligned current sheet filaments or strong bipolar fluctuations of the in‐plane magnetic field components, bounding the KH vortices. A global search for these characteristic magnetic field signatures near the magnetopause boundary was made of the Cassini mission data from 2004 to 2009. We find that most of the potential KH activity is found on the dusk flank, contrary to expectations. We suggest that KH growth is supported in the prenoon and subsolar regions and that these vortices are transported through coupling to the rotating planet, past noon and tailward on the dusk flank. In addition, we find many instances in the subsolar magnetosphere of possible plasmoid formation (Bz northward) in conjunction with these intense magnetic field fluctuations.
Kebijakan Utang, Kebijakan Dividen Dan Income Smoothing: Peran Moderasi Ukuran Perusahaan

Penelitian ini bertujuan untuk menguji pengaruh kebijakan utang dan kebijakan dividen terhadap income smoothing. Selain itu, penelitian ini juga memasukkan ukuran perusahaan sebagai variabel moderasi. Penelitian ini menggunakan data yang bersumber dari laporan keuangan manufaktur periode tahun 2018 sampai 2020. Data penelitian diperoleh dari www.idx. co.id. Sampel yang digunakan dalam penelitian ini berjumlah 108 berdasarkan purposive sampling. Penelitian ini menyimpulkan bahwa kebijakan utang dan kebijakan dividen tidak berpengaruh terhadap income smoothing. Namun demikian, ukuran perusahaan yang besar mengakibatkan perusahaan yang memiliki kebijakan utang dan kebijakan dividen yang tinggi, melakukan tindakan income smoothing. Penelitian ini mengindikasikan Otoritas Jasa Keuangan menerapkan kebijakan untuk menurunkan tindakan income smoothing yang dapat merugikan kepentingan investor.
Minimization Problems and Linear and Nonlinear Spline Functions. I: Existence

The nonconvex problem of minimum curvature is considered in detail and sufficient conditions for existence of solutions as well as characterizations are presented. The $L^\infty $ minimization problem of least norm, involving a nonsingular linear differential operator and linear inequality constraints, is considered and an existence theorem is presented. A thorough analysis is given for the problem of finding an element in the set $TU$ which is closest to a given element y, where T is a linear mapping of a Banach space X into a complete metric linear space $Y,U$ is a convex subset of X and y is an element of Y. These three classes of results, stated in reverse order to that in which they appear, are seen to be consequences of certain general theorems stated at the outset.
Spectral analysis and stability of thermoelastic Bresse system with second sound and boundary viscoelastic damping

In this paper, we consider the energy decay rate of a thermoelastic Bresse system with variable coefficients. Assume that the thermo‐propagation in the system satisfies the Cattaneo's law, which can eliminate the paradox of infinite speed of thermal propagation in the assumption of the Fourier's law in the classical theory of thermoelasticity. Meanwhile, we also discuss the effect of a boundary viscoelastic damping on the stability of this system. By a detailed spectral analysis, we obtain the expressions of the spectrum and deduce some spectral properties of the system. Then based on the distribution of the spectrum, we prove that the energy of the system with a boundary viscoelastic damping decays exponentially. However, it no longer decays exponentially if there is no boundary damping. Copyright © 2013 John Wiley & Sons, Ltd.
Viscoelastic properties of polymer surfaces investigated by nanoscale dynamic mechanical analysis

The viscoelastic properties of polymer surfaces were investigated by nanoscale dynamic mechanical analysis (nano-DMA) involving contact force modulation in the frequency range of 10–200Hz. Nano-DMA experiments were performed with a Berkovich diamond tip of nominal radius of curvature equal to ∼100nm under a mean contact force of 8–10μN and alternating force equal to 2% of the mean force. Variations in the loss tangent, storage modulus, and loss modulus of low- and high-density polyethylene and ultrahigh molecular weight polyethylene with the force frequency demonstrated significantly different viscoelastic behaviors for shallow depths (<40nm) than for relatively large depths (i.e., 75–100nm). The effects of alternating force frequency and indentation depth on the viscoelastic properties of the different polyethylene materials are interpreted in terms of the microstructure characteristics and the molecular chain mobility at the polymer surfaces. The results show that nano-DMA is an effective technique for nanoscale studies of the viscoelastic behavior of polymer surfaces.The viscoelastic properties of polymer surfaces were investigated by nanoscale dynamic mechanical analysis (nano-DMA) involving contact force modulation in the frequency range of 10–200Hz. Nano-DMA experiments were performed with a Berkovich diamond tip of nominal radius of curvature equal to ∼100nm under a mean contact force of 8–10μN and alternating force equal to 2% of the mean force. Variations in the loss tangent, storage modulus, and loss modulus of low- and high-density polyethylene and ultrahigh molecular weight polyethylene with the force frequency demonstrated significantly different viscoelastic behaviors for shallow depths (<40nm) than for relatively large depths (i.e., 75–100nm). The effects of alternating force frequency and indentation depth on the viscoelastic properties of the different polyethylene materials are interpreted in terms of the microstructure characteristics and the molecular chain mobility at the polymer surfaces. The results show that nano-DMA is an effective technique for .
IMPACT OF TOBACCO CONTROL POLICIES ON CIGARETTE CONSUMPTION IN MALAYSIA

Raising the cigarettes price is an important measure to reduce the consumption of cigarettes and smoking rate. Besides price, other measures of tobacco control policies also play essential roles in determining the demand for cigarettes in Malaysia. In this study, the impact of tobacco control policies on consumption of cigarettes was examined using the fully modified ordinary least squares (FMOLS) technique. The study found that higher cigarettes price due to excise tax significantly decreased consumption of cigarette in the long run. An increase of 10% in the price of cigarettes reduces 7.69% of its consumption. Other measures of tobacco control policies except the “Tak Nak” campaign were also found to have reduced the consumption of cigarette significantly. The study concludes that the effective ways of reducing the use of cigarettes are by increasing the cigarette tax and strengthening the enforcement of other tobacco policies measures.
Linear wave theory in magnetized quantum plasmas

Abstract We study the spin and ion effects in quantum plasma, where the two-fluid model of electrons is being used which treats the spin-up and -down populations relative to the magnetic field as different species. We find the susceptibility of electrons and ions where the ions are classical, but strongly coupled. The general dispersion relation is derived for wave propagation in homogeneous magnetized plasmas for arbitrary direction of propagation. We discuss the applicability of our results.
THE EFFECT OF SERVICE QUALITY ON INDIHOME CUSTOMER SATISFACTION AT PT. TELKOM AKSES MALANG

This study aims to determine the effect of Service Quality on Indihome Customer Satisfaction at PT. Telkom Access Malang, and how much influence the Service has on Indihome Customer Satisfaction at PT. Telkom Access Malang. The factor tested in this study is service quality as an independent variable. While customer satisfaction as the dependent variable. The research method used in this research is a quantitative descriptive method. The population in this study are IndiHome Malang provider customers. The sampling technique used in this study was purposive sampling, where the sample was selected based on certain considerations with a sample size of 100 people. While the analytical method used in this study is linear and multiple regression analysis at a significance level of 5%. The program used in analyzing the data uses the Statistical Package for Social Sciences (SPSS) Ver. 18.00. The test results show that physical evidence, reliability, responsiveness, assurance and empathy partially and simultaneously have a significant effect on customer satisfaction of IndiHome Malang Providers. The results showed that service quality including physical evidence, reliability, responsiveness, assurance and empathy had an influence on customer loyalty, meaning that to maintain customer loyalty one must pay attention to the 5 service quality factors, one must determine the concept of good service, for example trying to meet needs and wants as well as provide convenience for consumers who enjoy the service. Customer satisfaction with services is the key to success, not only in the short term, but sustainable excellence
FACTORS IN JUDGMENTS OF WRITING ABILITY

The purpose of this study was to serve as a stepping stone toward closer agreement among judges of student writing at the point of admission to college by revealing common causes of disagreement. It was expected and found that more than half the variability in grades of a large number of judges on the same set of papers was due to “error” (random variation) or the idiosyncratic preferences of individual readers. In the variability that was not random or idiosyncratic, it was expected and found that there was a substantial core of common agreement on the general merit of the papers and that a small number of “schools of thought” would account for most of the systematic differences in grading standards. Factor analysis of correlations among the grades of 53 distinguished readers, representing six different fields, on 300 papers written by college freshmen of widely varying ability revealed just five such “schools of thought,” emphasizing: Ideas: relevance, clarity, quantity, development, persuasiveness; Form: organization and analysis; Flavor: style, interest, sincerity; Mechanics: specific errors in grammar, punctuation, etc.; Wording: choice and arrangement of words. No standards or criteria for judging the papers were suggested to the readers. Instead, they were told to use “whatever hunches, intuitions, or preferences you normally use in deciding that one paper is better than another. ” They sorted the papers into nine piles in order of “general merit. ” The only restriction was that all nine piles must be used, with not less than 4% of the papers in any pile. The five reader-factors or “schools of thought” were identified by a “blind” classification of 11,018 comments written on 3,557 papers that were graded high (7–8–9) or low (1–2–3) by the three highest and three lowest readers on each factor. The person who classified the comments did not know the standing of any reader on any factor. In addition to the reader factors, three College Board tests taken by these students formed a separate “test-factor” that had practically zero correlations with all reader-factors except Mechanics (.50) and Wording (.45). It was not the purpose of this study to achieve a high degree of unanimity among the readers but to reveal the differences of opinion that prevail in uncontrolled grading–both in the academic community and in the educated public. To that end, the readers included college English teachers, social scientists, natural scientists, writers and editors, lawyers, and business executives. None the less, it was disturbing to find that 94% of the papers received either seven, eight, or nine of the nine possible grades; that no paper received less than five different grades; and that the median correlation between readers was 31. Readers in each field, however, agreed slightly better with the English teachers than with one another.
Category II Pilot in-the-Loop Oscillations Analysis from Robust Stability Methods

In this paper we deal with the analysis of pilot in-the-loop oscillations (PIO) of category II (with rate or position limiting). We propose an approach, based on robust stability analysis, which assumes that PIOs are characterized by a limit cycle behavior. In this way we obtain two different methods for the analysis of category II PIOs; the e rst method replaces the nonlinear element (contained in the model of the rate or position limited actuator ) by a linear time-invariantgainand isshownto beequivalenttotheclassicaldescribingfunction analysis,withtheadvantageof preventing thecomputational dife culties of the describing function approach. Theanalysis via time-invariant gain may be, however, optimistic in predicting PIOs for a given aircraft. Therefore a further method, based on stability analysisvia Lur’ eLyapunov functions, isprovided;such a method guaranteesasymptoticstability ofthenonlinear plant and can give conservative results. By the use of both methods, a complete analysis of the nonlinear system can be performed. The X-15 case study is considered to illustrate the effectiveness of the proposed methodology.