Miracle-dz/UniFAR-FTUs huggingface dataset:
The regularity of solutions to some variational problems, including the p-Laplace equation for 2 ≤ p< 3

We consider the higher differentiability of solutions to the problem of minimizing $$ \int_{\Omega} [ L(\nabla v(x))+g(x,v(x))]{\rm d}x \quad \hbox {on} \quad u^0+W^{1,p}_0(\Omega) $$ ∫ Ω [ L ( ∇ v ( x ) ) + g ( x,v ( x ) ) ] d x on u 0 + W 0 1 ,p ( Ω ) where L(|ξ|)=1/p|ξ| p and u 0 ∈ W 1 ,p ( Ω ). We show that, for 2 ≤ p g , there exists a solution u to the Euler–Lagrange equation associated to the minimization problem, such that $$\nabla u\in W^{1,2}_{\rm loc}(\om). $$ ∇ u ∈ W loc 1 , 2 ( Ω ) . In particular, for g ( x,u ) = f ( x ) u with f ∈ W 1,2 ( Ω ) and 2 ≤ p W 1 ,p ( Ω ) weak solution to the equation $${\rm div }(|\nabla u|^ {p-2}\nabla u)=f$$ div ( | ∇ u | p − 2 ∇ u ) = f is in W 2,2 loc ( Ω ) .
Aging concrete structures: a review of mechanics and concepts

Summary The safe and cost-efficient management of our built infrastructure is a challenging task considering the expected service life of at least 50 years. In spite of time-dependent changes in material properties, deterioration processes and changing demand by society, the structures need to satisfy many technical requirements related to serviceability, durability, sustainability and bearing capacity. This review paper summarizes the challenges associated with the safe design and maintenance of aging concrete structures and gives an overview of some concepts and approaches that are being developed to address these challenges.
Global Research Hotspots and Trends in Halal Research: A Scientometric Review Based on Descriptive and CiteSpace Analyses

The halal industry is growing, and there is an increasing recognition of its importance among academics, practitioners, and other industry stakeholders. However, there is limited scientometric research using CiteSpace analysis on halal research. This study is the first to report on scientometric research that used CiteSpace analysis to identify the extent of halal publications. The Web of Science Core Collection databases were queried, and CiteSpace was used for co-citation analysis, while Microsoft Excel was used for descriptive analysis. Our analysis included 1139 publications available in WOSCC between 1987 and 2021. We found a fifteen-fold increase in halal-related publications between 2010 (10) and 2021 (150). Malaysia (37%) and Indonesia (15%) were the top two countries with combined publications more than 50% of published papers. Our literature co-citation cluster analysis identified eleven clusters, with the most prominent being halal tourism, halal certification, pig adulteration, and halal logistics. The major fields with the highest number of halal-related publications were: (i) “Veterinary, Animal Science”, (ii) “Psychology, Education, Health”; and (iii) “Economics, Economic, Political”. Scientometric analysis of halal research can identify the focal points and frontiers of the field. This study offers valuable theoretical and real-world references, recent developments, and opportunities for collaboration.
Positive and sign-changing least energy solutions for a fractional Schrödinger–Poisson system with critical exponent

ABSTRACT In this paper, we study the following fractional Schrödinger–Poisson system (FSP) where are two fixed constants, is the fractional critical exponent in dimension 3. Under some certain assumptions on non-negative functions and , we obtain the existence of a positive and a sign-changing least energy solution for via variational methods. Moreover, we show that the energy of the sign-changing least solution is strictly larger than twice of the least energy.
Self-Determination Theory for Predicting Intention to Buy Recycled Products in The Era of Society 5.0

Daur ulang merupakan peluang industri untuk mengembangkan produk yang memiliki potensi manfaat ekonomi yang signifikan serta manfaat ekologis. Perkembangan industri ini juga harus diikuti dengan perkembangan minat masyarakat untuk menggunakan produk daur ulang. Motivasi orang untuk memiliki niat membeli produk kami teliti menggunakan teori penentuan nasib sendiri sebagai teori yang menganggap manusia sebagai organisme aktif untuk selalu tumbuh dan berkembang baik secara fisik maupun psikologis. Teori ini menjelaskan bahwa manusia memiliki otonomi atas keputusan yang diambilnya. Penelitian ini dibangun dengan pendekatan kuantitatif yang mengkaji pengaruh teori penentuan nasib sendiri dengan variabel amotivasi, regulasi eksternal, regulasi introjeksi, regulasi yang diidentifikasi, regulasi terintegrasi dan motivasi intrinsik dalam memprediksi niat beli produk daur ulang oleh masyarakat di era masyarakat 5.0 . Metode Analisis data regresi linier berganda menggunakan SPSS 25. Hasil penelitian menjelaskan pengaruh signifikan teori penentuan nasib sendiri terhadap prediksi niat membeli produk daur ulang. Pengaruh dominan dengan motivasi intrinsik yaitu motivasi terbangun dengan menciptakan peluang industri di masa depan, kampanye kesadaran lingkungan masyarakat harus digencarkan agar masyarakat sadar dan menikmati produk daur ulang.
Disparities in Subjective Well-being by Sexual Orientation: Comparing Cohorts from pairfam’s (2008-09) and FReDA’s (2021) Baseline Waves

Significant expansion of legal rights and recognition of sexual minority populations triggered expectations that structural stigma, sexual minority stress and, consequently, previously well-documented disadvantages in health and well-being may decline over time. The empirical evidence on this issue is, however, still sparse and inconclusive. We contribute to this research by comparing baseline data from the German Family Panel (pairfam; 2008-09) and the German Family Demography Panel Study (FReDA; 2021). These data allow us to assess disparities in subjective well-being by sexual orientation and potential changes therein after legalisation of same-sex marriage in Germany in two adult cohorts interviewed more than a decade apart. We focus on two specific outcomes, namely life satisfaction and self-rated health. Two main findings emerged from our analysis: First, minority sexual orientation is associated with significantly lower subjective well-being, specifically lower life satisfaction. Second, there are no statistically significant changes in the sexual orientation-health nexus between cohorts. Our study, thus, neither lends support to “optimistic” expectations regarding the contribution of (further) reductions in institutional discrimination and structural stigma to (further) reductions in remaining disadvantages, nor does it lend support to “pessimistic” expectations suggesting that younger cohorts of sexual minority adults may experience an even larger gap in health and well-being than previous cohorts. We propose that the stability of sexual minorities’ disadvantages in subjective well-being during the first two decades of the 21st century in Germany be interpreted as the result of two opposing forces working in parallel: Reduced institutional discrimination and increased exposure to continued stigma. The legal recognition of same-sex relationships appears to be a necessary but not sufficient condition for the acceptance of sexual minorities. Remaining disparities by sexual orientation will thus not simply disappear when institutional discrimination of sexual minorities is eliminated. Currently, we may therefore find ourselves in a “transitory period” whose further evolution is difficult to predict. FReDA – with its evolving longitudinal dimension and the inclusion of self-reported measures of respondents’ sexual orientation – will constitute a powerful resource for future investigations of inequalities in yet understudied but increasingly visible sexual minority populations. * This article belongs to a special issue on “Family Research and Demographic Analysis – New Insights from the German Family Demography Panel Study (FReDA)”.
Plasmon-Assisted Si-ITO Integrated Electro-Optical Rib-Shape Modulator

An integrated plasmonic indium-tin-oxide (ITO)-based silicon electro-optical modulator has been designed, fabricated, and characterized. A sandwich structure shows a 40 GHz bandwidth at the $-2$ dB level and an extinction ratio of about 1.8 dB. The device is fabricated on a silicon-on-insulator wafer. A silicon waveguide is excluded from the electric circuit. Instead, an ITO layer is used both as a bottom electrical contact and as an electric field-sensitive medium. As a gate oxide, we used a silicon dioxide layer capped with a gold top electrode to form a capacitor. The dielectric rib inside the ITO-Au capacitor forms a coupling interface between the TE photonic and plasmonic modes.
Unraveling of cloud types during phases of monsoon intra‐seasonal oscillations by a Ka‐band Doppler weather radar

Ground‐based cloud radar has been used for the first time in the Indian subcontinent to explore the cloud population during the break, transition and active phases of monsoon intra‐seasonal oscillation over a region in the Western Ghats mountain. The synergetic use of in situ measurements along with the supporting large‐scale microphysical features from the reanalysis data has been utilized in order to have a closer look of the morphology of clouds along with its transition during the intra‐seasonal phases. It has been observed that the active phase is dominated by deep clouds (~41%) along with some shallow (~28%) and congestus clouds (~29%) while the break phases are dominated by the shallow clouds (~72%) during precipitating and high‐level cirrus clouds (~65.22%) during the non‐precipitating times. The role of middle level moisture for modulating the nature of the clouds along with its role in determining the latent heating profile over the same region has also been presented.
The absolute salinity of seawater and its measurands

Salinity is an essential quantity to calculate many of the physical properties of oceans, but it is also a quantity hard to define considering the complexity of this material in its bio-geo-chemical composition and the imperfections of the existing measurement techniques. The TEOS-10 gives several definitions to the notion of absolute salinity, usable in the function of the properties to study, but they are based on the concept of a constant elemental composition of seawater, so that, if its major inorganic components are well known, its real composition varies in time and space and its determination is still a challenge. Most salinity calculations are based on conductivity measurements. This publication reviews other techniques which are used or could be used to assess the absolute salinity of seawater and questions the measurand of these techniques and the possibility to redefine the concept of salinity from physical properties.
The Effect of Investor Sentiment throughout the Distribution of Returns in the Chinese Stock Market

This paper adopts the data of xueqiu.com in the first half of 2015 from the Datago database and selects 100 A-shares stocks in CSI100. The number of followers is considered when building the bullishness index. In addition, quantile regression is used to study the contem-poraneous and predictive effects of sentiment on stock returns. The result suggests that sen-timent has negative contemporaneous effects on stock returns, while for the predictive mod-el, the effect is positive. Furthermore, the effects of sentiment are stronger in extreme cir-cumstances and more substantial at lower quantile than at higher quantile. However, the weighted bullishness index does not explain well as the original one. Overall, this paper ver-ifies the difference of effects between extreme and normal conditions, then attempts to use a new method to construct a bullishness index and offer more evidence about the relationship between social network sentiment and stock returns in the Chinese stock market.
Examination of the presence and effect of udder edema in Holstein-Friesian cattle

Mastitis is the most common disease of dairy cows and the most expensive in terms of treatment. For this reason, great emphasis must be placed on its prevention. Based on literature sources, it can be said that there is a positive correlation between the prevalence of udder edema and the occurrence of mastitis. Our studies were carried out in a dairy farm in Csongrád-Csanád county. So far we have collected data from 64 cows with udder edema. The severity of udder edema was evaluated on a scale of 0–3 points one week before calving and for 3 weeks after calving. We observed that udder edema occurred in 78% of the studied cows at the time of the first calving. After calving, the length and diameter of the four udder teats were examined. Both anterior and posterior teats were shortened in severely edematous cows. When examining the diameter of the teat, we found that, depending on the severity of the edema, the anterior and posterior udder teats were 2.5 and 1.6 and 1.6 and 1.5 mm thicker respectively than those of cows without edema.
The Development of Grade 10 Students' Mental Models on Solutions Through Model-Centered Instruction

This study aimed to construct the mental models of students in the 10th grade in order to attain a higher level of mental models by adopting a model-centered education sequence. This might be accomplished by adopting a model-centered instruction sequence. The research group consisted of 33 students who were all in the tenth grade at one school in the Mahasarakham province of Thailand during the second semester of the academic year 2021. The following instruments were utilized in the course of this research: 1) six different lesson plans, each with its own set of answers, that utilize a model-centered instructional technique, 2) mental model test, 3) students’ notebook, and 4) teacher’s note. Statistics such as the percentage, the mean, and standard deviation were applied in the process of doing the data analysis. The result revealed that the majority of students have accurate mental representations of scientific models, the adoption of a model-centered education sequence can help students gain more achievement. When it comes to accurately preparing diluted solutions, boiling points of solutions, and freezing points of solutions, the proportions of accurate mental models were 45.5, 51.5, and 48.4 respectively. It has been shown that the percentages of individuals who have entirely incorrect mental models, flawed mental models, incoherent mental models, and those who have no reaction are all on the decline.
Statistical Inferences for Realized Portfolio Weights

Abstract Statistical inferences for weights of the global minimum variance portfolio (GMVP) are of both theoretical and practical relevance for mean-variance portfolio selection. Daily realized GMVP weights depend only on realized covariance matrix computed from intraday high-frequency returns. Both finite sample and asymptotic distributional properties of the realized GMVP weights are deduced. Then, statistical tests for the GMVP proportions are developed in order to provide sequential monitoring with on-line decisions whether a given portfolio composition deviates from the current GMVP significantly. The theoretical results are illustrated both in Monte Carlo simulations and in an empirical application.
The Stokes equations in layer domains on spaces of bounded and integrable functions

The Stokes equations in a layer domain are investigated. For the case of a two‐dimensional layer it is shown by resolvent estimates that there exists a semigroup of angle π/2 on solenoidal subspaces of L∞ and L1. Furthermore, the stationary problem for dimension two is solvable in these spaces. It is also shown that both results cannot be extended to three and higher dimensions in the same setting.
Hardware design and software development of a motion control and driving system for transradial prosthesis based on a wireless myoelectric armband

This research work presents the design of the electronics modules of Adam's Hand, a transradial myoelectric prosthesis based on an innovative mechanism which can actuate five three-phalanges fingers (15 degrees of freedom) with just one motor, instead of the five/six motors conventionally used in other prosthetic devices; moreover, the prosthesis uses two servomotors to actuate the wrist movements. Adam's Hand fingertips are provided with temperature and pressure sensors, while the user myoelectric signals are acquired wirelessly by means of the Myo armband, a wearable device provided with eight electromyography electrodes, a nine-axis inertial measurement unit, and a transmission module. These data are received through an HM-11 BLE module, connected to Adam's Hand custom PCB, which features an Arduino Micro board. This board processes all the data and drives the actuators by means of properly chosen drivers. A Raspberry Pi 3 board manages a touchscreen display - which can be used to visualise the gathered data - and sends them to a dedicate cloud platform, so that the orthopaedic technicians who take care of Adam's Hand users can monitor them in real time, thus improving their recovery during the rehabilitation period.
Upaya Meningkatkan Pemahaman Konsep Melalui Model Pembelajaran Quantum Teaching

Penelitian ini bertujuan untuk meningkatkan pemahaman konsep siswa kelas V SDN Majalengka Wetan III melalui model pembelajaran quantum teaching. Penelitian ini merupakan penelitian tindakan kelas dimana peneliti bekerja sama dengan guru kelas sebagai observer. Subjek penelitian adalah siswa kelas V SDN Majalengka Wetan III, sebanyak 24 terdiri dari 12 siswa laki-laki dan 12 siswa perempuan. Teknik yang digunakan dalam pengumpulan data adalah tes, observasi, wawancara dan dokumentasi. Data berupa hasil tes sebagai data primer dan hasil observasi, wawancara serta dokumentasi sebagai bahan pendukung. Teknik analisis data yang digunakan adalah analisis deskriptif kualitatif untuk menganalisis hasil tes akhir setiap tindakan dan analisis deskriptif untuk hasil observasi setiap tindakan. Penelitian dilaksanakan 2 siklus. Hasil penelitian menunjukkan bahwa penerapan model pembelajaran quantum teaching dalam pelajaran Ilmu Pengetahuan Sosial (IPS) dapat meningkatkan pemahaman konsep kelas V SDN Majalengka Wetan III. Hal ini ditunjukan dengan adanya peningkatan nilai sebelum pemberian tindakan hingga siklus II. Nilai rata-rata kelas sebelum pemberian tindakan adalah 66,21 sedangkan persentase siswa yang mencapai ketuntasan belajar adalah 45,83%. Pada siklus I nilai rata-rata kelas yang diperoleh siswa74,58sedangkan persentase siswa yang mencapai ketuntasan belajar adalah 62,50%. Pada siklusIInilai rata-rata kelas yang diperoleh siswa85,71sedangkan persentase siswa yang mencapai ketuntasan belajar adalah 95,83%. Kesimpulan, penerapan model pembelajaran quantum teaching dalam pembelajaran IPS dapat meningkatkan pemahaman konsep pada pokok bahasan pertempuran-pertempuran dalam mempertahanan kemerdekaan Indonesia dalam mata pelajaran IPS siswa kelas V SDN Majalengka Wetan III Kecamatan Majalengka.
Pre-service teachers’ experiences of remote online learning: reimagining teacher education post-pandemic

ABSTRACT Background As teaching and learning processes evolve in the wake of COVID−19, fresh thinking about the role of remote online learning (ROL) is critical as part of a wider reimagining of education in a post-pandemic context. In this paper, attention is focused on ROL within teacher education. Purpose This study sought to explore pre-service teachers’ perceptions of their ROL experiences in a Fijian teacher education programme. Method The qualitative study design was informed by transactional distance theory. Using a narrative inquiry approach, data from 15 pre-service teachers were collected and analysed. Via individual interviews conducted online, the prospective teachers shared their perceptions about the nature of interactions experienced whilst engaged in ROL during the pandemic. Data were analysed thematically, in relation to instructional dialogue, course structure, and autonomy. Findings In-depth analysis of rich data allowed main themes to emerge that captured the participants’ viewpoints. Prominent themes in instructional dialogue revealed some concerns about the precedence of textual communication over verbal in ROL and the perception of emphasis on product over the process of learning. In terms of course structure, volume of assessment and teaching style were among aspects which participants identified as affecting learner-content engagement. Comments about learner autonomy suggested that the pre-service teachers sought positives amidst the difficulties encountered, whilst maintaining a focus on completing the assessments and passing the course. Conclusion The analysis of pre-service teachers’ experiences offers insight into how aspects of ROL may challenge participant engagement within elements of teacher education courses. It highlights the support that needs to be provided to prospective teachers in order to reduce transactional distance, suggesting that effective course design and instructional dialogue to promote learner autonomy are both crucial to sustainable teacher education in the post-pandemic context.
Well‐balanced finite difference weighted essentially non‐oscillatory schemes for the blood flow model

The blood flow model maintains the steady‐state solutions, in which the flux gradients are non‐zero but exactly balanced by the source term. In this paper, we design high order finite difference weighted essentially non‐oscillatory (WENO) schemes to this model with such well‐balanced property and at the same time keeping genuine high order accuracy. Rigorous theoretical analysis as well as extensive numerical results all indicate that the resulting schemes verify high order accuracy, maintain the well‐balanced property, and keep good resolution for smooth and discontinuous solutions. Copyright © 2016 John Wiley & Sons, Ltd.
Five Gaps in Mathematics

Abstract In this article we present a careful survey and critique of 5 landmark results and methods that seem to have played a pivotal role in the development of Mathematics since 1984. This article conveys the slow development of our understanding over the years and could not have been possible without the numerous communications with some authors of these articles as well as conversations with other friends and collaborators. The key contribution and the kindness of these colleagues is hereby gratefully acknowledged.
Learning geometric and lighting priors from natural images

Understanding images is needed for a plethora of tasks, from compositing to image relighting, including 3D object reconstruction. These tasks allow artists to realize masterpieces or help operators to safely make decisions based on visual stimuli. For many of these tasks, the physical and geometric models that the scientific community has developed give rise to ill-posed problems with several solutions, only one of which is generally reasonable. To resolve these indeterminations, the reasoning about the visual and semantic context of a scene is usually relayed to an artist or an expert who uses his experience to carry out his work. This is because humans are able to reason globally on the scene in order to obtain plausible and appreciable results. Would it be possible to model this experience from visual data and partly or totally automate tasks? This is the topic of this thesis: modeling priors using deep machine learning to solve typically ill-posed problems. More specifically, we will cover three research axes: 1) surface reconstruction using photometric cues, 2) outdoor illumination estimation from a single image and 3) camera calibration estimation from a single image with generic content. These three topics will be addressed from a data-driven perspective. Each of these axes includes in-depth performance analyses and, despite the reputation of opacity of deep machine learning algorithms, we offer studies on the visual cues captured by our methods.