Miracle-dz/UniFAR-FTUs huggingface dataset:
Nachweis von Antikörpern gegen HBs-Antigen mit dem modifizierten MICROELISA-Hepanostika-Test

Die Möglichkeit, unter Benutzung des Hepanostika-Tests zum Nachweis von HBs-Antigen (Organon-Teknika) Antikörper gegen HBs-Antigen nachzuweisen, wurde geprüft. Unter verschiedenen Modifikationen des Hepanostika-Tests erwies sich die hier beschriebene als einfach, empfindlich und reproduzierbar. Von 689 Seren von Patienten einer Hämodialysestation hàtten im modifizierten Hepanostika-Test 110 und im Ausab-Test (Radioimmunoassay von Abbott zum Nachweis von Antikörpern gegen HBs-Antigen) 150 Antikörper gegen HBs-Antigen. Die vom Hepanostika-Test nicht nachgewiesenen Antikörper lagen in niedrigen Konzentrationen vor (Mittelwert der Impulse pro Minute 4,3 X NC). Die im Hepanostika-Test und im Ausab-Test positiven Seren enthielten Antikörper in höheren und hohen Konzentrationen (Mittelwert der Impulse pro Minute 29,5 X NC). In der Uberwanderungselektrophorese waren nur 11 von 689 Seren positiv. Ein wesentlicher Vorteil des modifizierten Hepanostika-Tests ist, daß auf derselben Platte gleichzeitig HBs-Antigen und Antikörper gegen HBs-Antigen nachgewiesen werden können. In einem derartigen Versuchsansatz wurden 200 Seren untersucht. Die gleichen Seren wurden im Ausria-II-125-Test auf HBsAntigen und im Ausab-Test auf Antikörper gegen HBs-Antigen geprüft. Im Hepanostika-Test wurde in fünf und im Ausria-Test in vier Seren HBs-Antigen nachgewiesen. 43 Seren enthielten nach dem HepanostikaTest und 45 Seren nach dem Ausab-Test Antikörper gegen HBsAntigen. Die zwei nur im Ausab-Test positiven Seren waren wiederum schwach positiv.
Stability of the superposition of rarefaction wave and contact discontinuity for the non‐isentropic Navier–Stokes–Poisson system

This paper is devoted to the study of the nonlinear stability of the composite wave consisting of a rarefaction wave and a viscous contact discontinuity wave of the non‐isentropic Navier–Stokes–Poisson system with free boundary. We first construct the composite wave through the quasineutral Euler equations and then prove that the composite wave is time asymptotically stable under small perturbations for the corresponding initial‐boundary value problem of the non‐isentropic Navier–Stokes–Poisson system. Only the strength of the viscous contact wave is required to be small. However, the strength of the rarefaction wave can be arbitrarily large. In our analysis, the domain decomposition plays an important role in obtaining the zero‐order energy estimates. By introducing this technique, we successfully overcome the difficulty caused by the critical terms involved with the linear term, which does not satisfy the quasineural assumption for the composite wave. Copyright © 2016 John Wiley & Sons, Ltd.
Time-scales of stellar rotational variability and starspot diagnostics

The difference in stability of starspot distribution on the global and hemispherical scales is studied in the rotational spot variability of 1998 main-sequence stars observed by Kepler mission. It is found that the largest patterns are much more stable than smaller ones for cool, slow rotators, whereas the difference is less pronounced for hotter stars and/or faster rotators. This distinction is interpreted in terms of two mechanisms: (1) the diffusive decay of long-living spots in activity complexes of stars with saturated magnetic dynamos, and (2) the spot emergence, which is modulated by gigantic turbulent ﬂows in convection zones of stars with a weaker magnetism. This opens a way for investigation of stellar deep convection, which is yet inaccessible for asteroseismology. Moreover, a subdiffusion in stellar photospheres was revealed from observations for the ﬁrst time. A diagnostic diagram was proposed that allows differentiation and selection of stars for more detailed studies of these phenomena.
Financial Market Frictions in the Nigerian Stock Market

Financial frictions constitute cost to trading and discourages investment on financial assets. It is on this premise; this study examines the effect of financial market frictions on stock market performance in Nigeria. Specifically, the effects of regulatory frictions, transaction costs and asymmetric information were inspected covering the period January 2010 to December 2021. The Generalized Method of Moments was applied on dynamic model to examine the effects. The findings reveal that regulatory frictions, transaction costs and asymmetric information significantly influence stock market returns. Specifically, cash reserve ratio has positive and significant effect on returns, while lending rate negatively and significantly influence market returns. Market illiquidity, and traded volume positively and significantly drive stock market returns, while market volatility, and exchange rate volatility negatively and significantly impacts stock market returns. This study concludes that regulations, asymmetric information and transaction costs constitute financial frictions and significantly impact stock market returns in Nigeria.
Tunable Magnetically Induced Transparency Spectra in Magnon-Magnon Coupled math xmlns

Hybrid magnonic systems host a variety of characteristic quantum phenomena such as the magnetically-induced transparency (MIT) and Purcell eﬀect, which are considered useful for future coherent quantum information processing. In this work, we experimentally demonstrate a tunable MIT eﬀect in the Y 3 Fe 5 O 12 (YIG)/Permalloy(Py) magnon-magnon coupled system via changing the magnetic ﬁeld orientations. By probing the magneto-optic eﬀects of Py and YIG, we identify clear features of MIT spectra induced by the mode hybridization between the uniform mode of Py and the perpendicular standing spin wave modes of YIG. By changing the external magnetic ﬁeld orientations, we observe a tunable coupling strength between the YIG’s spin-wave modes and the Py’s uniform mode, upon the application of an out-of-plane magnetic ﬁeld. This observation is theoretically interpreted by a geometrical consideration of the Py and YIG magnetization under the oblique magnetic ﬁeld even at a constant interfacial exchange coupling. Our ﬁndings show high promise for investigating tunable coherent phenomena with hybrid magnonic platforms.
An Efficient Finite Difference Method for The Time‐Delay Optimal Control Problems With Time‐Varying Delay

In this paper, an efficient finite difference method is presented for the solution of time‐delay optimal control problems with time‐varying delay in the state. By using the Pontryagin's maximum principle, the original time‐delay optimal control problem is first transformed into a system of coupled two‐point boundary value problems involving both delay and advance terms. Then the derived system is converted into a system of linear algebraic equations by using a second‐order finite difference formula and a Hermite interpolation polynomial for the first‐order derivatives and delay terms, respectively. The convergence analysis of the proposed approach is provided. The new scheme is also successful for the optimal control of time‐delay systems affected by external persistent disturbances. Numerical examples are included to demonstrate the validity and applicability of the new technique. Some comparative results are included to illustrate the effectiveness of the proposed method.
Effect of QR code and mobile money on performance of SMEs in developing countries. The role of dynamic capabilities

Abstract The purpose of the study is to examine the effect of QR code payment and mobile money on the performance of SMES in developing countries and the moderating role of dynamic capabilities. A survey method was used to gather data from the target population of SMEs that are making use of digital financial services in their business transactions. A total of 206 SMEs responded to the questionnaires. The study found that both mobile money usage and QR code payments have a significant and positive impact on SME performance. In addition to that, the study revealed that the effect of dynamic capabilities on firm performance was also statistically significant. The study also found the moderating effect was statistically significant for mobile money payments. However, for QR code payments, the moderation effect was not statistically significant. These findings imply that it is prudent for SMEs to adopt digital financial services for business transactions. Thus, improvement in the level of innovativeness in a dynamic business environment plagued by the COVID-19 pandemic will significantly improve SME performance. This will help make SMEs more robust and adjust themselves to the dynamics of the business environment.
How does the environment shape spatial language? Evidence for sociotopography

Abstract This article investigates the extent to which the way individuals describe spatial relationships correlates with features of the local landscape. Drawing on empirical data from two unrelated languages, Dhivehi (Indo-Aryan) and Marshallese (Austronesian), across a range of topographic environments, we examine the linguistic resources available to speakers, and spatial referential strategy preferences across languages and environments. We find that spatial language shows sensitivity to features of the topography, but this is mediated by the way speakers interact with the landscape. This leads us to propose a Sociotopographic Model, modelling the complex interplay of language structure, local environment, cultural practices, and language use, at odds with competing claims about the primacy of language or of environment in shaping spatial cognition.
Bioactive compounds screening of Rafflesia sp. and Sapria sp. (Family: Rafflesiaceae) as anti-SARS-CoV-2 via tetra inhibitors: An in silico research

Context: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has rapidly spread, causing a global pandemic with diverse symptoms and increased risk of mortality. Various symptoms and comorbidities contribute to a higher likelihood of death in patients. Additionally, existing antiviral drugs have shown incomplete efficacy. Rafflesia sp. and Sapria sp. are parasitic plants with potential medical applications as anti-SARS-CoV-2 agents. Aims: To evaluate the bioactive compounds derived from Rafflesia sp. and Sapria sp. as dual inhibitors against SARS-CoV-2. Methods: Ligand samples were obtained from the PubChem database. Target proteins essential for SARS-CoV-2 entry were obtained from the RCSB PDB. The antiviral potential of the bioactive compounds was evaluated using the Pass Online webserver. The bioactivity and inhibitory potential of selected ligands were analyzed using the SwissADME and Molinspiration web servers. In addition, a specific docking method was performed using PyRx software to determine binding activity and molecular interactions. Results: Computational analysis revealed that leucoanthocyanidin, ellagic acid, and catechin functioned as dual inhibitors, targeting angiotensin-converting enzyme 2 (ACE2), transmembrane protease serine 2 (TMPRSS2), furin, and cathepsin L for antiviral activity. However, valrubicin and diminazene, serving as control drugs for ACE2 and furin, respectively, demonstrated the most effective results through this mechanism. Further studies are required to validate these findings. Conclusions: The combination of bioactive compounds derived from Rafflesia sp. and Sapria sp. shows potential antiviral activity through a dual inhibitor mechanism involving leucoanthocyanidin, ellagic acid, and catechin, which target SARS-CoV-2 proteins, namely ACE2, TMPRSS2, furin, and cathepsin L.
Détermination de l’exactitude d’un géoïde gravimétrique

La determination des modeles du geoide avec une precision centimetrique est parmi les objectifs principaux de differents groupes de recherche. Une des methodes les plus utilisees afin de calculer un modele de geoide est le Retrait-Restauration en utilisant le terrain residuel. Cette methode combine les informations a des courtes, moyennes et grandes longueurs d’onde via trois etapes principales en appliquant la formule de Stokes. A chaque etape nous citons les sources d’erreurs et leur influence sur la precision du calcul du geoide. Nous interessons surtout a la correction du terrain dans la premiere etape (le retrait) et l’estimation de la precision de l’integrale de Stokes dans la deuxieme etape (l’integration). La correction du terrain consiste a enlever les hautes frequences du signal gravimetrique via un processus de calcul donne par le contexte de la methode de Retrait-Restauration. Nous faisons des tests sur les differents parametres pour choisir ses valeurs correspondant a une precision d’un centimetre notamment le choix des petit et grand rayons et l’influence de la resolution du MNT. Nous etudions aussi la phase d’integrale de Stokes en limitant a la fonction standard de Stokes, sans modifications. Les parametres de cette etape sont etudies en generant des donnees synthetiques a partir du EGM2008 (Earth Gravity Model). Nous estimons la precision de l’integration de Stokes dans differentes zones
The Development and Validation of InvPERC Scale: A Perception Study

: The rationale behind this research is to frame a novel measurement scale for mutual funds-“The InvPERC Scale”. This scale focused on ascertaining non-conventional factors, apart from risk and return, influencing investor perception of Indian mutual fund investors towards this investment avenue.The exhaustive assessment of the available literature canvass showed that no scale for measuring investor perception toward mutual fund performance is available. Therefore, the scale was developed by thoroughly analyzing investors’ opinions on mutual funds. Data for the analysis has been gathered through 1280 mutual fund investors’ questionnaire-based surveys and put into meticulous data analysis. The findings of this research work present a combination of three factors playing a decisive role in framing mutual fund investors’ perception namely convenience, credibility, and intrinsic fund qualities.
Enhancing nitrogen and rainwater use efficiency through rainwater harvesting in semi-arid smallholder sorghum (Sorghum bicolor) farming systems

Abstract Nitrogen and rainwater use efficiency in semi-arid smallholder farming systems is low due to low soil fertility and unreliable rainfall. The objective of this study was to evaluate the effect of rainwater harvesting and mineral nitrogen fertilizer on nitrogen and rainwater use efficiency under two sorghum (Sorghum bicolor) varieties. A split-split plot experiment, replicated three times, was conducted in Mt Zonwe smallholder farming area from 2016/17 to 2018/19. The results showed that water content under tied contour (TC) and infiltration pits (IP) had significantly higher water content compared to standard contour (SC) and moisture content significantly decreased with an increase in distance from RWH practices. TC and IP had higher agronomic efficiency than SC across all nitrogen applications, distance from RWH practice, and seasons. Sorghum variety Macia had higher nitrogen use efficiency indices than Sc Sila at nitrogen application of 50 and 70 kg N/ha while nitrogen application >100 kg N/ha had no difference in nitrogen use in both varieties. A decreasing trend in nitrogen productivity with an increase in nitrogen application was shown in both varieties. Mineral nitrogen fertilizer application increased rainwater productivity up to 100 kg N/ha beyond which there was no significant difference. Regardless of sorghum variety and season, TC and IP had higher rainwater use efficiency than SC at each distance from RWH practice. This study recommends the integrated use of TC and IP rainwater harvesting practices and mineral nitrogen fertilizer sustainably to improve N and rainwater productivity in semi-arid smallholder sorghum farming systems.
Randomly weighted sums of dependent subexponential random variables with applications to risk theory

Abstract For any fixed integer , let be real-valued random variables with a common subexponential distribution, and let be positive random variables which are bounded above and independent of . Under some rather loose conditional dependence assumptions on the primary random variables , this paper proves that the asymptotic relations hold as , where are arbitrarily dependent. In particular, it is shown that the above results hold true for with certain Samarnov distributions. The obtained results on randomly weighted sums are applied to estimating the finite-time ruin probability in a discrete-time risk model with both insurance and financial risks.
From perturbative to non-perturbative renormalization in Tensorial Group Field Theories

This thesis presents a number of tools to deepen our understanding of the underlying physics theories called fields GFTs (Group Field Theories). These theories found their origins in different approaches of quantum gravity, in particular spin foams and random tensors, and are interpreted as quantum space-time or "pre-geometric" models, the amplitudes of Feynman being indexed by triangulations. The understanding of the passage between this "discrete" vision to our continuous space-time remains the great challenge of these theories, for which renormalization, effective theories, research of fixed points and phase transitions proves paramount, and it is the aim of this thesis to understand the tools required for this description. In a first time, we will focus to give a concise description of the perturbative renormalization, and the establishment of a closed system of equations describing exactly the leading order of the theory. Secondly, we will detail the implementation of nonperturbative methods. The functional renormalization group in the first place, providing a first non-perturbative description of these theories, and some nontrivial fixed points. Finally, a constructive approach discussed on two models open the way to a rigorous definition of these theories beyond the perturbative level.
Strength of Cement Treated Base Courses in the Flexible Pavement Design for Pathlaiya- Nijgadh Section of East-West Highway of Nepal

Rutting and fatigue are the most common pavement distresses that are caused due to overloading, subgrade strength, and poor construction quality. The strength of the pavement layer can be improved by the construction of cement-treated layers. This study suggested that the cement-treated base is the effective modification technique for a granular base course by evaluating the unconfined compressive strength, and modulus of rupture. The unconfined compressive strength revealed that a cement-treated base is an effective treatment for the improvement of strength. Similarly, flexural strength indicated that a cement-treated base is an effective method to reduce the fatigue damage of the base course, and 5% cement content is sufficient to resist crack formation on the base course. 5.34% cement content in CTB developed a stiff mix with a stronger ability towards applied load dispersion that can resists deformation. In the meantime, unconfined compressive strength, modulus of rupture, and modulus of elasticity obtained at 5.34% cement content on a cement-treated base satisfied the minimum requirement as set by the Department of Roads, Government of Nepal.
The Association Between Teaching Practices and Students’ Perceptions of Being in a Classroom Community of Engaged Learners

Past research suggests that a sense of belonging to a community is developmentally important for adolescents and affects their engagement in school, especially during the transition to high school. However, little research examines the teaching practices that simultaneously foster classroom belonging and behavioral engagement to create a classroom community of engaged learners. This study investigates the association between specific teaching practices (i.e., lesson organization and structure, academic support, and student–teacher trust) related to students perceiving they are in a classroom community of engaged learners. Hierarchical linear modeling was used to analyze survey responses of 16,137 ninth grade students in a large urban school district. Results show a positive relationship between the way a teacher organizes their classroom lessons and activities, the level of academic support, and student–teacher trust towards students perceiving they are in a community of engaged learners. These findings differ across student characteristics (e.g., race, sex, living in a high poverty neighborhood, special education status, grades). The findings suggest that teaching practices that are generally considered by educators within the profession as good instructional practices may also be key for creating a community of engaged learners.
Enumeration, orthogonality and completeness of the incompressible Coriolis modes in a tri-axial ellipsoid

Abstract Inertial waves often occur in geophysics and astrophysics since fluids dominated by rotation are common. A simple model to study inertial waves consists of a uniform incompressible fluid filling a rigid tri-axial ellipsoid, which rotates about an arbitrary axis fixed in an inertial frame. The waves are due to the Coriolis force, which can be treated mathematically as a skew-symmetric bounded linear operator acting on smooth inviscid flows in the ellipsoid. It is shown that the space of incompressible polynomial flows in the ellipsoid of degree N or less is invariant under . The symmetry of thus implies the Coriolis operator is non-defective with an orthogonal set of eigenmodes – Coriolis modes – in the finite-dimensional space of inviscid polynomial flows in the ellipsoid. The modes with non-zero eigenvalues are the inertial modes; the zero-eigenvalue modes are geostrophic. This shows the Coriolis modes are polynomials, enables their enumeration and leads to proof of their completeness by using the Weierstrass polynomial approximation theorem. The modes are tilted if the rotation axis is not aligned with a principal axis of the ellipsoid. A basic tool is that the solution of the polynomial Poisson-Neumann problem, i.e. Poisson’s equation with Neumann boundary condition and polynomial data, in an ellipsoid is a polynomial. The tilted Coriolis modes of degree one are explicitly constructed and shown to be the only modes with non-zero angular momentum in the boundary frame. All tilted geostrophic modes are also explicitly constructed.
Increasing Student Motivation for Speaking Skills with MALL (Mobile-Assisted Language Learning)

MALL (mobile-assisted language learning) was implemented in order to raise pupils' grades, especially in English-speaking classes. Microsite was used to assist students in accessing learning materials. The study was carried out at one of Batam's secondary schools. Students in grade 10 of the second semester at one public high school were the subject of this study. The researchers as teachers would observe 50 science students through the evaluation in English class. To acquire data, the researchers compared pre-test and post-test results. and found out whether the strategy was successful in enhancing students' speaking abilities. Classroom action research (CAR) was applied to solve the issue in the class. The information was obtained in four steps: planning, acting, observing, and reflecting. The results revealed the speaking abilities of students have improved between pre-tests and post-tests. Students received a score of 59.56. for the average score of pre-tests and were categorized poorly. After implementing MALL (mobile-assisted language learning) activities, the average grades of the students increased. Post-tests gained 65.47 with a great improvement in several aspects such as pronunciation was 10.14% and followed by fluency was 6,3% improvement. The evidence indicates that students responded positively to the MALL (mobile-assisted language learning) method particularly when using Microsite. The findings concluded that students' enthusiasm to learn English has been enhanced by MALL (mobile-assisted language learning), which has also boosted their speaking abilities.