Miracle-dz/UniFAR-FTUs huggingface dataset:
Role of School Principals’ Technology Leadership Practices in Building a Learning Organization Culture in Public K-12 Schools

A principal’s technology leadership (TL) practices can facilitate information and communication technologies (ICT) integration into K-12 schools, alongside a drastic change in teachers' organizational behaviors to accompany this technological and cultural transformation process. However, there is little evidence of which TL practices contribute to such a holistic change in school culture; that is, the learning organization (LO) culture stimulating teachers' individual and collective professional learning orientations in tandem. The purpose of this paper is twofold. The first is to identify distinct profiles of LO culture in schools, based on teachers’ professional learning orientations. The second is to explore how a principal’s TL practices are related to teachers’ endorsement of these LO profiles. Data were drawn from 1105 teachers and 58 principals in 69 K-12 schools in Turkey. Multilevel latent profile analysis was used to uncover latent LO profiles with similar professional learning orientations. The resulting profiles were regressed on principals' TL practices, measured against the International Society for Technology in Education-Administrators (ISTE-A) standards. Teachers' professional learning orientations fell into high, moderate, and low-level LO profiles. The “systemic improvement” ISTE-A standard, including TL practices such as a principal’s data-driven decision making, school benchmarking, and technology-oriented staff employment, proved to be a significant predictor of a high-level LO profile. The school stage and teacher’s age were also found to be associated with that profile. Overall, we conclude that TL practices may have far-reaching implications for teachers’ professional learning orientations and school culture.
Accurate Solution for Orthotropic Beams with Continuously Variable Cross Sections

Orthotropic materials and components are widely used in various engineering fields, such as aerospace, energy, infrastructure, and water conservancy projects. The orthotropic components such as slabs and beams cannot be investigated accurately by using traditional beam theory because it is unable to take more elastic constants into account. The precise stress distribution of orthotropic simply supported beams of any thickness is determined in this article. Meanwhile, all undetermined coefficients of the stress function are derived by performing a Fourier sine series expansion upon the bottom and top surfaces of the beam. It shows that the resolution corresponds well with the numerical analysis findings from the finite element method. It indicates rapid convergence and can obtain high-precision and high stress analysis results, which has a good application prospect in engineering.
Systematic review of empirical studies on international large-scale assessments of civic and citizenship education

ABSTRACT This study investigated research trends in civic and citizenship education by systematically reviewing research regarding international frameworks for civic and citizenship education. We focused on major international large-scale assessments – specifically, the International Civic and Citizenship Education Study, and its predecessor, the Civic Education Study. Using four electronic databases, we analyzed 135 peer-reviewed journal articles. The analysis showed that differences among countries in research interests might be linked to different cultural backgrounds. It also showed that the greatest number of articles were published in social science disciplines, education research in particular. The results highlight the necessity of investigating principals’ and teachers’ perceptions of civic and citizenship education. Future research could focus on understudied variables such as adolescents’ civic participation, and home and peer civic education contexts, utilizing diverse variables from the ICCS 2016 data. By summarizing and discussing research trends, this study provides a blueprint for future research in the field of civic and citizenship education.
More than bargained for in Reverse Mathematics

Reverse Mathematics (RM for short) is a program in the foundations of mathematics with the aim of finding the minimal axioms required for proving theorems about countable and separable objects. RM usually takes place in second-order arithmetic and due to this choice of framework, continuous real-valued functions have to be represented by so-called codes. Kohlenbach has shown that the RM-definition of continuity-via-codes constitutes a slight constructive enrichment of the epsilon-delta definition, namely in the form of a modulus of continuity. In this paper, we show that the RM-definition of continuity also gives rise to a `nonstandard' enrichment in the form of nonstandard continuity from Nonstandard Analysis. This observation allows us to (i) establish that RM-theorems related to continuity are implicitly higher-order statements, (ii) prove equivalences between RM-theorems concerning continuity and their associated higher-order versions, and (iii) obtain explicit equivalences between higher-order theorems from the equivalence between the corresponding RM-theorems. Moreover, we show that it is exactly the RM-definition of continuity-via-codes which gives rise to these higher-order phenomena. In conclusion, we establish that the practice of coding in RM, designed to obviate higher-type objects, actually introduces a host of new ones.
General Clique Percolation in Network Evolution

We introduce a general $(k,l)$ clique community, which consists of adjacent $k$-cliques sharing at least $l$ vertices with $k-1 \ge l \ge 1$. The emergence of a giant $(k,l)$ clique community indicates a $(k,l)$ clique percolation, which is studied by the largest size gap $\Delta$ of the largest clique community during network evolution and the corresponding evolution step $T_c$. For a clique percolation, the averages of $\Delta$ and $T_c$ and the root-mean-squares of their fluctuations have power law finite-size effects whose exponents are related to the critical exponents. The fluctuation distribution functions of $\Delta$ and $T_c$ follow a finite-size scaling form. In the evolution of the Erd\H{o}s-R\'enyi network, there are a series of $(k,l)$ clique percolation with $(k,l)=(2,1),(3,1),(3,2),(4,1),(4,2),(5,1),(4,3)$, and so on. The critical exponents of clique percolation depend on $l$, but are independent of $k$. The universality class of a $(k,l)$ clique percolation is characterized alone by $l$.
Variability of QSOs with variable regions in broad absorption troughs from the Sloan Digital Sky Survey

The variability of broad absorption lines is investigated for a sample of 188 broad-absorption-line (BAL) quasars (QSOs) ($z > 1.7$) with at least two-epoch observations from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7), covering a time-scale of about 0.001 -- 3 years in the rest frame. Considering only the longest time-scale between epochs for each QSO, 73 variable regions in the \civ BAL troughs are detected for 43 BAL QSOs. The proportion of BAL QSOs showing variable regions increases with longer time-interval than about 1 year in the rest frame. The velocity width of variable regions is narrow compared to the BAL-trough outflow velocity. For 43 BAL QSOs with variable regions, it is found that there is a medium strong correlation between the variation of the continuum luminosity at 1500 \AA\ and the variation of the spectral index. With respect to the total 188 QSOs, larger proportion of BAL QSOs with variable regions appears bluer during their brighter phases, which implies that the origin of BAL variable regions is related to the central accretion process. For 43 BAL QSOs with variable regions, it is possible that there is a negative medium strong correlation between the absolute variation of the equivalent width and the \mgii-based black hole mass, and a medium strong correlation between the maximum outflow velocity of variable regions and the Eddington ratio. These results imply the connection between the BAL-trough variation and the central accretion process.
Trapping of electrons near chemisorbed hydrogen on graphene

Chemical adsorption of atomic hydrogen on a negatively charged single-layer graphene sheet has been analyzed with ab initio density-functional theory calculations. We have simulated both finite clusters and infinite periodic systems to investigate the effect of different ingredients of the theory, e.g., exchange and correlation potentials, basis sets, etc. Hydrogen's electron affinity dominates the energetic balance in the charged systems and the extra electron is predominantly attracted to a region nearby the chemisorbed atom. The main consequences are: (i) the cancellation of the unpaired spin resulting in a singlet ground state and (ii) a stronger interaction between hydrogen and the graphene sheet.
Photochemistry, Functional Properties, Food Applications, and Health Prospective of Black Rice

This review investigates black rice’s photochemistry, functional properties, food applications, and health prospects. There are different varieties of black rice available in the world. The origins of this product can be traced back to Asian countries. This rice is also known as prohibited rice, emperor’s rice, and royal’s rice. Black rice is composed of different nutrients including fiber, protein, carbohydrates, potassium, and vitamin B complex. It contains an antioxidant called anthocyanin and tocopherols. Antioxidants are found mostly in foods that are black or dark purple. Due to its nutritious density, high fiber level, and high antioxidant content, black rice is a good alternative to white and brown rice. Utilizing black rice in various foods can enhance the nutritional value of food and be transformed into functional food items. Many noncommunicable diseases (NCDs) can be prevented by eating black rice daily, including cancer cells, atherosclerosis, hypertension, diabetes, osteoporosis, asthma, digestive health, and stroke risk. This review aim was to discuss the role of nutritional and functional properties of black rice in the formation of functional food against different noncommunicable diseases.
Effect of compressive imaging sparse reconstruction on remote sensing

Compressive sensing is a promising theory that can sense data in a sub-Nyquist sampling. This theory has developed rapidly in many fields as soon as it appeared. It depends on the sparsity of the signal and senses the signal by low measurement and sparse reconstruction. In theory, sparse reconstruction is the core factor of compressive sensing theory and its application. In order to explore the feasibility of applying compressive imaging in remote sensing, this paper investigate the effect of sparse reconstruction on remote sensing images using typical datasets. The reconstruction algorithms such as convex optimization and greedy are introduced to implement the image reconstruction. The quality of reconstructed images is measured by PSNR index with respect to the different datasets and algorithms. The simulations show that the sparsely reconstructed remote sensing images keeps the image quality under different compression ratios of compressive imaging. The results verify the feasibility for applying compressive imaging in remote sensing.
Linear maps preserving the dimension of fixed points of operators

Let B(X) be the algebra of all bounded linear operators on a complex Banach space X with dim X greater than 3. In this paper, we characterize the forms of surjective linear maps on B(X) which preserve the dimension of the vector space containing of all fixed points of operators, whenever X is a fifinite dimensional Banach space. Moreover, we characterize the forms of linear maps on B(X) which preserve the vector space containing of all fixed points of operators.
Drug Treatment Effect Model Based on MODWT and Hawkes Self-Exciting Point Process

In precision medicine, especially in the pharmacodynamic area, the lack of an adequate long-term drug effect monitoring model leads to a quite low robustness to the instant drug treatment. Modelling the effect of drug based on the monitoring variables is essential to measure the drug benefit and its side effect preciously. In order to model the complex drug behavior in the context of time series, a sin function is selected to describe the basic trend of heart rate variable that is medically monitored. A Hawkes self-exciting point process model is chosen to describe the effect caused by multiple and sequential drug usage at different time points. The model considers the time lag between the drug given time and the drug effect during the whole drug emission period. A cumulative Gamma distribution is employed to describe the time lag effect. Simulation results demonstrate the established model effectively when describing the baseline trend and the drug effect with low noise levels, where the maximal overlap discrete wavelet transformation is utilized for the information decomposition in the frequency zone. The real data of the variables heart rate and drug liquemin from a medical database is analyzed. Instead of the original time series, scale variable s4 is selected according to the Granger cointegration test. The results show that the model accurately characterizes the cumulative drug effect with the Pearson correlation test value as 0.22, which is more significant for the value under 0.1. In the future, the model can be extended to more complicated scenarios through taking into account multiple monitoring variables and different kinds of drugs.
Parameterized Expectations Algorithm and the Moving Bounds: a comment on convergence properties

In this paper we analyze the convergence properties of the moving bounds algorithm to initialize the Parameterized Expectations Algorithm suggested by Maliar and Maliar (2003) [Journal of Business and Economic Statistics 1, pp. 88-92]. We carry out a Monte Carlo experiment to check its performance against some initialization alternatives based on homotopy principles. We do so within the framework of two standard neoclassical growth models. We show that: (i) speed of convergence is poor as compared to alternatives; (ii) starting from a not very accurate initial guess might prevent convergence in relatively simple models. The results suggest the need to fine tune Maliar and Maliar's method to improve its convergence properties.
On the Impact of Perceived Vulnerability in the Adoption of Information Systems Security Innovations

A number of determinants predict the adoption of Information Systems (IS) security innovations. Amongst, perceived vulnerability of IS security threats has been examined in a number of past explorations. In this research, we examined the processes pursued in analysing the relationship between perceived vulnerability of IS security threats and the adoption of IS security innovations. The study uses Systematic Literature Review (SLR) method to evaluate the practice involved in examining perceived vulnerability on IS security innovation adoption. The SLR findings revealed the appropriateness of the existing empirical investigations of the relationship between perceived vulnerability of IS security threats on IS security innovation adoption. Furthermore, the SLR results confirmed that individuals who perceives vulnerable to an IS security threat are more likely to engage in the adoption an IS security innovation. In addition, the study validates the past studies on the relationship between perceived vulnerability and IS security innovation adoption.
Geometry of Manifolds

Manifolds Lie groups Fibre bundles Differential forms Connexions Affine connexions Riemannian manifolds Geodesics and complete Riemannian manifolds Riemannian curvature Immersions and the second fundamental form Second variation of arc length Theorems on differential equations Bibliography Subject index.
ETHICAL ANALYSIS OF GEOSOCIAL DATA TO BALANCE SOCIAL AND INDIVIDUAL INTERESTS

Geosocial media platforms enable sharing of information on location-based events and spatial phenomena. In addition to the discourse on socially relevant topics, personal views and preferences are shared equally. Research and use of this data in the interest of society and the individuals requires a responsible, ethical approach (Zhang et al., 2022). According to Olteanu et al. (2019) an ethical approach means that individual autonomy is respected, that research should be beneficial and non-maleficence and should aim on the ideal of justice.
Understanding discs in binary YSOs – detailed modelling of VV CrA

Given that a majority of stars form in multiple systems, in order to fully understand the star- and planet-formation processes we must seek to understand them in multiple stellar systems. With this in mind, we present an analysis of the enigmatic binary T-Tauri system VV Corona Australis, in which both components host discs, but only one is visible at optical wavelengths. We seek to understand the peculiarities of this system by searching for a model for the binary which explains all the available continuum observations of the system. We present new mid-infrared interferometry and near-infrared spectroscopy along with archival millimetre-wave observations, which resolve the binary at 1.3mm for the first time. We compute a grid of pre-main-sequence radiative transfer models and calculate their posterior probabilities given the observed spectral energy distributions and mid-infrared interferometric visibilities of the binary components, beginning with the assumption that the only differences between the two components are their inclination and position angles. Our best-fitting solution corresponds to a relatively low luminosity T-tauri binary, with each component's disc having a large scale height and viewed at moderate inclination ($\sim 50^\circ$), with the infrared companion inclined by $\sim 5^\circ$ degrees more than the primary. Comparing the results of our model to evolutionary models suggests stellar masses $\sim 1.7$M$_\odot$ and an age for the system of 3.5Myr, towards the upper end of previous estimates. Combining these results with accretion indicators from near-IR spectroscopy, we determine an accretion rate of 4.0$\times 10^{-8}$M$_\odot$ yr$^{-1}$ for the primary. We suggest that future observations of VV~CrA and similar systems should prioritise high angular resolution sub-mm and near-IR imaging of the discs and high resolution optical/NIR spectroscopy of the central stars.
Improved site truck gate detection algorithm based on deep learning

At present, with the rapid development of industrialization, construction and real estate industries have also been developed, but the verification and entrance control of vehicles carrying large equipment and cement also need to be checked manually, causing a lot of artificial burden. In this paper, an improved algorithm based on deep learning is proposed to realize unmanned gate detection. The distance between the vehicle and the gate can be judged by real-time detection of whether there is a vehicle passing by, so as to make the instruction of lifting the gate or lowering the gate. Compared with the traditional gate detection, the use of a lower cost of ordinary cameras can be completed, so as to save a lot of cost, and can detect the vehicle information in real time, consistent with China's industrial intelligence strategy. In this paper, YoLoV4 algorithm is used and mobilnet-V3 algorithm is used to replace the original main network structure, which greatly reduces the number of parameters of the algorithm structure and improves the running speed of the algorithm, so that it can reach the real-time state. VOC data sets were used for training and detection, and the experiment proved that the speed was greatly improved and real-time vehicle detection could be realized.
Complex Stellar System ESO65SC03: Open Cluster or Remnant?

Abstract We present a complete spatial and dynamical study of the poorly populated stellar system ESO65SC03. The radial distribution of the system gives a core and cluster radii of 1.10±0.63 and 5.36±0.24 arcmin, respectively. The SNDP does not show any clear enhancement of the surface stellar number density between the stars of the system and the field regions. We derive the optimum isochrone solution for a particular grid size in the CMD using the statistical cleaning procedure. Using the statistically cleaned CMDs, we find the distance modulus, (m − M)0, and reddening, E(B − V), of the system to be 11.8±0.2 and 0.45 mag, respectively. The mean proper motion of this system is − 5.37±0.81 mas yr−1 and 0.31±0.40 in RA and DEC directions, respectively. The mean proper motion of this system is found to be almost similar to the field region. The mass function for the brighter stars is found to be too high for the system to be an open cluster. These combined results place constraints on whether stellar system ESO65SC03 is a POCR or an Asterism. Our understanding is that the ESO65SC03 is in a stage of POCR by losing their main-sequence stars in the dynamic evolution processes.
SECOND FUNDAMENTAL MEASURE OF GEOMETRIC SETS AND LOCAL APPROXIMATION OF CURVATURES

Using the theory of normal cycles, we associate with each geometric subset of a Riemannian manifold a —tensor-valued— curvature measure, which we call its second fundamental measure. This measure provides a finer description of the geometry of singular sets than the standard curvature measures. Moreover, we deal with approximation of curvature measures. We get a local quantitative estimate of the difference between curvature measures of two geometric subsets, when one of them is a smooth hypersurface.
Modeling a rain-induced mixed layer

Abstract : With the development of ocean surface remote sensing, air sea interaction theory and the theory of underwater sound generation at the ocean surface, the potential calming effect on surface gravity waves by raindrop induced mixing has become important. The rain induced mixed layer was studied with models based on the turbulent kinetic energy budget. A bulk mixed layer model was tuned with laboratory experimental data. The turbulent kinetic energy going into subsurface mixing was found to be less than 10% of the total raindrop kinetic energy. The length scale for mixing is proportional to both raindrop size and rain intensity. Furthermore, there is some indication of an initial penetration depth for raindrops. Although the available data was inadequate to complete model development and verification, a prediction for a hypothetical situation in the North Pacific is proposed. The diffusion processes are illustrated by solving for the diffusion and dissipation terms of the turbulent kinetic energy equation with a finite difference scheme. New experiments are suggested to allow future model development and testing.
Is the equivalence principle violated by generalized uncertainty principles and holography in a brane-world?

It has recently been debated whether a class of generalized uncertainty principles that include gravitational sources of error is compatible with the holographic principle in models with extra spatial dimensions. We had in fact shown elsewhere that the holographic scaling is lost when more than four space–time dimensions are present. However, we shall show here that the validity of the holographic counting can be maintained also in models with extra spatial dimensions, but at than intriguing price — the equivalence principle for a pointlike source is violated and the inertial mass differs from the gravitational mass in a specific, nontrivial way.