Miracle-dz/UniFAR-FTUs huggingface dataset:
Examining the gendered timescapes of higher education: reflections through letter writing as feminist praxis

ABSTRACT This article examines the significance of neoliberalism in re/shaping the gendered timescapes of higher education in Ghana through its intersection with patriarchal forces. It draws from a project aiming to create non-hierarchical, co-mentoring spaces in which participants collaboratively generate feminist analyses. Letter-writing was identified as a form of feminist praxis and an auto/biographical method to access the multidimensional inequalities women navigated in their careers. Opening counter-hegemonic time–space and providing feminist conceptual resources, the women explored their aspirations, experiences, and subjectivities. In Ghana, women are attempting to balance the accelerated temporalities of neoliberal higher education, as productive subjects, with the explicit demands of patriarchy, which construct them primarily in reproductive terms as wives and mothers. Our collective reflections illustrate that intersecting forces are at play that impact women’s higher education careers in unpredictable and contradictory ways.
The Absorption of Extreme Ultraviolet Solar Radiation by Jupiter's Upper Atmosphere

Abstract The absorption of extreme ultraviolet (EUV) sunlight by Jupiter's upper atmosphere is investigated and a detailed description is offered for the collision processes by which photoelectrons lose energy. It is argued that thermal equilibrium between electrons, ions and neutrals is probable at least with current ideas on the structure of Jupiter's ionosphere. An estimate is given for the fraction of absorbed EUV energy converted locally into heat. This estimate, 86%, is considerably larger than a value of 61% computed earlier for the atmospheres of Venus and Mars, a consequence of the comparative absence of radiating levels in gases expected to be present in Jupiter's upper atmosphere.
Active THz medical imaging using broadband direct detection

Research in THz imaging is generally focused on three primary application areas: medical, security, and nondestructive evaluation (NDE). While work in THz security imaging and personnel screening is populated by a number of different active and passive system architectures, research in medical imaging in is generally performed with THz time-domain systems. These systems typically employ photoconductive or electro-optic source/detector pairs and can acquire depth resolved data or spectrally resolved pixels by synchronously sampling the electric field of the transmitted/reflected waveform. While time-domain is a very powerful scientific technique, results reported in the literature suggest that desired THz contrast in medical imaging may not require the volume of data accessible from time-resolved measurements and that a simpler direct detection, active technique may be sufficient for specific applications. In this talk we discuss an active direct detection reflectometer system architecture operating at a center frequency of ~ 525 GHz that uses a photoconductive source and schottky diode detector. This design takes advantage or radar-like pulse rectification and novel reflective optical design to achieve high target imaging contrast with significant potential for high speed acquisition time. Results in spatially resolved hydration mapping of burn wounds are presented and future outlooks discussed.
Manifestation of optical feedback in power and spectral radiation properties of a Raman fiber laser with randomly distributed feedback well above generation threshold

Spectral properties of Raman fiber lasers with randomly distributed feedback well above generation threshold are mainly defined by nonlinear interactions in the fiber. The role of randomly distributed feedback hence is expected to be negligible, though this problem has not been investigated particularly. We numerically study spectral properties of a random fiber laser and a corresponding fiber amplifier with no feedback and emphasize the importance of Rayleigh backscattering: having marginal influence on generation efficiency, it affects the generation spectrum shape and width.
‘I owe it to the animals’: The bidirectionality of Swiss alpine farmers' relational values

1. Relational values have recently been proposed as a concept to expand our understanding of environmental values from the categories previously dominating the discourse: instrumental (nature for people's sake) and intrinsic values (nature for its own sake). Empirical and conceptual research on relational values has so far focused on the content of relational values or their relationship to other kinds of values. 2. In this paper, we fill a key gap in understanding exactly what relational values are and how they work; we call this the ‘syntax’ of relational values. We do so by applying the Syntax of Environmental Values Framework, which describes relational values as bidirectional, expressed by genuine respect and care on the one hand and an eudaimonic contribution to wellbeing on the other. 3. We developed a novel interview protocol which we applied in semistructured interviews with Swiss alpine farmers. We examine how both of these directions are manifested in farmers' relational values. 4. Our results showed how the bidirectionality manifests in relational values of alpine farmers. Specifically, we identified three components of each
A two-terminal silicon nanoribbon field-effect pH sensor

This paper reports on a two-terminal silicon nanoribbon (SiNR) field-effect pH sensor operated in electrolyte. Observed experimentally and confirmed by modeling, the sensor is activated by self-gating with a gate bias set by the potential difference of the two terminals. The effect of this gate bias on the SiNR conductance is modulated by the potential drop over the electrical double layer (EDL) established on the SiNR surface, similarly to the threshold voltage modulation by EDL in a three-terminal SiNR field-effect transistor with an independent gate electrode. The potential drop over EDL is determined by the pH value of the electrolyte.
Finite Time Stability and Optimal Finite Time Stabilization for Discrete-Time Stochastic Dynamical Systems

In this article, we address finite time stability in probability of discrete-time stochastic dynamical systems. Specifically, a stochastic comparison lemma is constructed along with a scalar system involving a generalized deadzone function to establish almost sure convergence and finite time stability in probability. This result is used to provide Lyapunov theorems for finite time stability in probability for Itô-type stationary nonlinear stochastic difference equations involving Lyapunov difference conditions on the minimum of the Lyapunov function itself along with a fractional power of the Lyapunov function. In addition, we establish sufficient conditions for almost sure lower semicontinuity of the stochastic settling-time capturing the average settling time behavior of the discrete-time nonlinear stochastic dynamical system. Furthermore, a stochastic finite-time optimal control framework is developed by exploiting connections between Lyapunov theory for finite time stability in probability and stochastic Bellman theory. In particular, we show that finite time stability in probability of the closed-loop nonlinear system is guaranteed by means of a Lyapunov function that can clearly be seen to be the solution to the steady state form of the stochastic Bellman equation, and hence, guaranteeing both stochastic finite time stability and optimality.
On Lipschitz maps and their flows

This paper regroups some of the basic properties of Lipschitz maps and their flows. While some of the results presented here have already appeared in other papers, most of them are either only and classically known in the case of smooth maps and needed to be proved in the Lipschitz case for a better understanding of the Lipschitz geometry or are new and necessary to the development of numerical methods for rough paths.
Comparisons of Two Statistical Approaches to Study Growth Curves: The Multilevel Model and the Latent Curve Analysis.

This article compares two statistical approaches for modeling growth across time. The two statistical approaches are the multilevel model (MLM) and latent curve analysis (LCA), which have been proposed to depict change or growth adequately. These two approaches were compared in terms of the estimation of growth profiles represented by the parameters of initial status and the rate of growth. A longitudinal data set obtained from a school‐based substance‐use prevention trial for adolescents was used to illustrate the similarities and differences between the two approaches. The results indicated that the two approaches yielded very compatible results. The parameter estimates associated with regression weights are the same, whereas those associated with variances and covariances are similar. The MLM approach is easier for model specification and is more efficient computationally in yielding results. The LCA approach, however, has the advantage of providing model evaluation, that is, an overall test of goodnes.
Is NSGA-II Ready for Large-Scale Multi-Objective Optimization?

NSGA-II is, by far, the most popular metaheuristic that has been adopted for solving multi-objective optimization problems. However, its most common usage, particularly when dealing with continuous problems, is circumscribed to a standard algorithmic configuration similar to the one described in its seminal paper. In this work, our aim is to show that the performance of NSGA-II, when properly configured, can be significantly improved in the context of large-scale optimization. It leverages a combination of tools for automated algorithmic tuning called irace, and a highly configurable version of NSGA-II available in the jMetal framework. Two scenarios are devised: first, by solving the Zitzler–Deb–Thiele (ZDT) test problems, and second, when dealing with a binary real-world problem of the telecommunications domain. Our experiments reveal that an auto-configured version of NSGA-II can properly address test problems ZDT1 and ZDT2 with up to 217=131,072 decision variables. The same methodology, when applied to the telecommunications problem, shows that significant improvements can be obtained with respect to the original NSGA-II algorithm when solving problems with thousands of bits.
The value of the Advanced Lung Cancer Inflammation Index (ALI) in assessing the prognosis of patients with hepatocellular carcinoma treated with camrelizumab: a retrospective cohort study

Background The Advanced Lung Cancer Inflammation Index (ALI) is considered a useful prognostic biomarker for clinical outcome in patients with malignancy. However, the prognostic value of ALI in patients with advanced hepatocellular carcinoma (HCC) is unclear. In this study we assessed the prognostic value of the ALI in patients with HCC treated with camrelizumab. Methods This retrospective study analyzed patients with advanced hepatocellular carcinoma treated with the ICI, camrelizumab alone or in combination at Henan Cancer Hospital from January 2017 to January 2020. Sixty-five patients were finally screened for at least 2 years of follow-up according to the inclusion criteria, with no significant differences in patient baseline data. The receiver operating characteristic (ROC) curve was used to determine the optimal cut-off point for the ALI which was compared to other clinical indicators for predicting survival. A Kaplan-Meier analysis and Cox proportional analysis were conducted to examine the association between the ALI and patient prognosis. Results The median overall survival (OS) for the overall group of patients was 383 days, the area under the curve for ALI was 0.815 and the optimal cut-off value for predicting OS was 34.65. The median OS for patients with an ALI score ≤34.65 was 336 days and that for patients with an ALI score >34.65 was 524 days. The univariate analysis showed that the Eastern Cooperative Oncology Group (ECOG) score, aspartate aminotransferase (AST) level, and the ALI score predicted OS. The multivariate analysis showed that the ALI score was an independent prognostic factor of OS in patients with advanced HCC who had been treated with immunotherapy [hazard ratio (HR) =0.285, 95% confidence interval (CI): 0.097–0.833, P=0.022]. A nomogram that included ALI performed well relative to the prediction of prognosis after immunotherapy for patients with advanced liver cancer. Conclusions The ALI may be a new prognostic marker in patients with advanced HCC undergoing immunotherapy.
Static magnetic and microwave absorption properties of FeCo/Al2O3 composites synthesized by high-energy ball milling method

FeCo/Al2O3 composites were prepared by mechanochemical synthesis route using a mixture of Fe2O3, Co3O4 and Al as the starting materials. FeCo alloy can be obtained in a short time in contrast to the traditional method by means of milling Fe and Co powders directly. Most FeCo/Al2O3 composites can be formed when ball milling time has achieved 15 min. As the milling time increases, the saturation magnetization (Ms: magnetic moment per unit mass) and coercive force (Hc) of FeCo/Al2O3 composites increase gradually. The FeCo/Al2O3 composites exhibit a value of Ms of 98.5 emu g−1 and Hc of 350 Oe finally. The products with ball milling time 15 min and 30 min provided better microwave absorption performances in the frequency ranges of 8.6–18 GHz and 2.5–6.5 GHz for an absorber thickness of 1.2–2.2 mm and 2.1–4.9 mm, respectively. An optimal reflection loss of −43.1 dB can be obtained at 4.1 GHz with an absorber thickness of 3.1 mm. The good microwave absorption performances result from an appropriate impedance matching due to the insulator Al2O3 dispersed around FeCo alloy.
Understanding and Representing Space: Theory and Evidence from Studies with Blind and Sighted Children

Introduction: questions and terms 1. Modality and cognition in developmental theories and evidence 2. The modalities as convergent sources of spatial information 3. Neuropsychological evidence on convergence 4. Shape coding by vision and touch 5. Spatial coding: studies in small-scale space 6. Information and understanding large-scale space 7. Non-verbal representation: images, drawings, maps, and memory 8. Some practical implications 9. A theory of spatial understanding and development
Nutrição mineral e adubação da cana-de-açúcar

1Engo Agr, D.Sc., Prof. Adj. UFAL-Centro de Ciências Agrárias-Dep Fitotecnia e Fitossanidade, CEP 57100-000 Rio Largo-AL. Correio eletrônico: mwagner@ceca.ufal. br 2Engo Agr, D.Sc., Pesq. EPAMIG-CTCO, Caixa Postal 295, CEP 35701-970 Prudente de Morais-MG. Correio eletrônico: morel@epamig.br 3Engo Agr, M.Sc., Pesq. EPAMIG-CTCO, Caixa Postal 295, CEP 35701-970 Prudente de Morais-MG. Correio eletrônico: geraldomacedo@epamig.br 4Engo Agr, Ph.D., Pesq. EPAMIG-CTCO, Caixa Postal 295, CEP 35701-970 Prudente de Morais-MG. Correio eletrônico: jucaferreira@epamig.br Resumo A cana-de-açúcar é uma cultura de grande potencial produtivo. Alcança, em diversas lavouras, acúmulo anual de matéria natural superior a 150 t/ha. A colheita dessa matéria natural remove elevada quantidade de nutrientes e, portanto, devem-se adotar medidas para que o potencial produtivo da cana não venha a ser comprometido pelo insuficiente fornecimento de nutrientes ou pela presença de elementos em níveis tóxicos. São apresentados a avaliação da fertilidade do solo, os critérios e doses de calagem, de gessagem e de adubações químicas e orgânicas, bem como os índices técnicos de um sistema de produção de cana destinada à alimentação de vacas leiteiras, no qual foram utilizadas doses de adubos maiores que as rotineiramente recomendadas, tendose verificado resultados agronômicos e financeiros compensadores.
Property ₃ and the union of two convex sets

A set S in a linear space is said to have the threepoint convexity property P3 iff for each triple of points x, y, z of S, at least one of the segments xy, xz, yz is a subset of S. It is proved that if S is a compact set in Euclidean space of dimension at least three with at least one point interior to its convex kernel and if the set of points of local nonconvexity of S is interior to its convex hull, then S has property P3 iff it is the union of two convex sets. Introduction. Property P3 has been defined and investigated by Valentine for two-dimensional sets [3] anid in finite-dimensional spaces [5]. A set S in a linear space is said to have the three-point convexity property P3 iff for each triple of points x, y, zES, at least olne of the segments xy, xz, yz is a subset of S. Although every set which is the union of two convex sets has property P3, property P3 alone does not characterize such sets, as the example of a five-pointed star shows. Valentine [3] has shown that in E2 a closed set having property P3 can be expressed as the union of three or fewer convex sets, and that the number three is best in this case. It is shown in this paper that under certain conditions a set in Euclidean space of dimension three (or higher) is the union of two convex sets if and only if it has property P3. McKinney [2 ] has shown that if S is a closed set in a topological linear space, then S is the union of two convex sets if and only if it has the property that for any cyclically ordered n-tuple (n odd) of points of S, at least one of the segments connecting consecutive points is a subset of S. (This property implies property P3.) Marr and Stamey [1 ] also have considered a property stronger than property P3 which implies that S is the union of two convex sets. Preliminary definitions and results. A point x of a set S in En is called a point of local nonconvexity of S if for every neighborhood N of x there exists a pair of points u, vESnN such that the segment itv is not a subset of S. The convex kernel of the set S will be denoted by K, and the set of points of local nonconvexity of S will be denoted by Q. The boundary operator in En will be denoted by "bd", "interior" by "int", "closure" by "cl", and "convex hull" by "conv". THEOREM 1 (VALENTINE [5]). Let S be a closed connected set having Received by the editors June 18, 1969. 1 This paper comes from a doctoral dissertation with Professor F. A. Valentine at the University of California, Los Angeles, and was supported in part by NSF Grant
Euclidean two-dimensional gravity with torsion

Two-dimensional gravity with torsion is considered assuming Euclidean signature of the metric. A general solution of the Euler–Lagrange equations is found in the conformal gauge. Extremals and geodesics are found and analyzed. All global Euclidean solutions are explicitly constructed and classified. Besides the constant curvature Riemann surfaces of arbitrary genus there are a large number of compact and noncompact surfaces of nonconstant curvature and non-trivial torsion possessing conical singularities. The relation between Lorentz and Euclidean global solutions is analyzed.
Topotactical Route to Multiwalled Cerium Oxide Nanotubes from MWCNTs

The development of new strategies for synthesizing 1D cerium oxide (CeO2) hollow nanostructures has attracted much attention in recent years due to the importance of their superior properties and highly anisotropic geometry. This study reports an unpublished route of fabricating novel multiwalled CeO2‐δ nanotubes (CeO2‐δ NTs) in which the entire volume of functionalized multiwalled carbon nanotubes (f‐MWCNTs) is converted into the CeO2‐δ pseudomorph through oxidation and dehydration topotactic reactions. The stable CeO2‐δ (111) planes are topotactically grown on the curved C (002) planes, preferentially exposed along the nanotube axis. In their initial condition, the novel nanotubes consist of Ce oxyhydroxide (CeO2‐x(OH)x) with residual carbon. When heating the air up to 500 °C, CeO2‐x(OH)x transforms gradually by dehydration into CeO2‐δ, while the residual carbon is oxidized. Despite compositional changes, nanotubes maintain their multiwalled structural integrity up to ≈550 °C. The CeO2‐δ NTs exhibit an unusually high presence of Ce3+ ions and surface O vacancies, contributing to a low direct band gap ranging from 2.67 to 2.32 eV compared to their NPs counterparts (3.2 eV).
Factors Affecting the Acceptance of E-commerce in Hospitals: A Narrative Review

Context: The global use of the Internet has expanded e-commerce as a tangible representation of the information and communication technology (ICT) revolution in all industries. Like other sectors, e-commerce is essential in the healthcare sector for meeting patients’ increasing demands and providing high-quality and cost-effective healthcare services at clinics, hospitals, and other healthcare centers. Objectives: We investigated the factors affecting the acceptance of e-commerce in healthcare centers and hospitals. Evidence Acquisition: In this narrative review, articles indexed in PubMed, Emerald, Scopus, ProQuest, and Google Scholar and published from 2010 to 2021 were searched using the “e-commerce”, “healthcare”, and “hospital” keywords. Inclusion criteria encompassed being conducted in the field of e-commerce in medical and health centers in Iran and the world and published from 2010 to the end of December 2021. Studies in which the role of e-commerce was inconspicuous, those that were irrelevant to healthcare centers, studies failing to note effective research parameters in abstracts, and finally, scientific sources lacking full text were excluded. Finally, ten relevant papers were chosen and analyzed. Results: Based on our findings, today's technologies, such as e-commerce, have influenced the quality of healthcare and investments in the healthcare industry. Besides, high-ranking managers of healthcare centers and hospitals should support the establishment and deployment of e-commerce by providing appropriate facilities to implement such systems, e.g., adequate hardware and software needed to install and efficiently run the system. Conclusions: In this way, the positive effects of e-commerce were shown in all aspects of healthcare centers, including improvements in healthcare services’ quality, enhanced financial performance, and facilitated service provision. It is suggested that health centers provide adequate hardware and software to easily install and run the E-commerce system and other e-health programs so that medical personnel can more easily accept these technologies.
Basic sets of polynomials for generalized Beltrami and Euler-Poisson-Darboux equations and their iterates

When a1,= . =am-i=0 and am>0, Lj(u)=0 is known as the Beltrami or the Euler-Poisson-Darboux (EPD) equation according as j= 0 or j= 1. If am = 0 too, then Lo(u) = 0 and Lj(u) = 0 become the Laplace and wave equations, respectively. Basic sets of polynomial solutions for the Laplace and wave equations have been given in a number of papers [1][5]. In [6] Mliles and Williams obtained basic sets of polynomials for the Beltrami and EPD equations from their result in [3]. In [7] the result of [3] was extended to form basic sets for the iterated Laplace and wave equations. Here we derive basic sets for (1) from the basic sets given in [7]. The Miles and Williams basic set of homogeneous polynomials of degree n for the k-fold iterated Laplace equation Aku =0 (A= Df=1 82/8x2) may be represented by
The nature of S Andromedae (SN 1885A)

The spectral data on S Andromedae, or SN 1885A, which indicate that it was a type I supernova, are reexamined, and it is concluded that SN 1885A belongs to a supernova class distinct from types SN Ia and SN Ib. The light curve had a rapid rise to maximum, a rapid postmaximum decline, and a large magnitude difference between maximum and 150 days postmaximum, compared to other type I events. SN 1885A was probably a low-mass explosion, ejecting 0.1-0.3 solar mass of matter mostly in the form of Ni-56. This suggests that it left behind a compact remnant, either a neutron star or a white dwarf. 19 references.