Miracle-dz/UniFAR-FTUs huggingface dataset:
Assessing the research and teaching performance of the mechanical engineering teaching staff at FEUP

This paper analyses the research and teaching performance of the teaching staff of the Integrated Master in Mechanical Engineering (MIEM) at the Faculty of Engineering of the University of Porto (FEUP). Performance in the two strands of professional activity is measured by the number of publications authored by the individuals and their impact on the scientific community, and by the marks receive from the students through pedagogic questionnaires (PQs). The teaching staff includes all permanent elements involved in MIEM curricular units (CU), with the exception of those teaching just the CU Dissertation. The set has 74 professionals, with 62 from the Department of Mechanical Engineering. The staff bibliographic data are public and were collected from the Scopus database at the end of September, 2021. The PQs data are classified and were provided to the cycle of studies Board by FEUP” Sigarra administrative office. Data for all CUs were considered, with the exception of Dissertation, in a per semester basis, for the period 2016–2017 up to 2020–2021. The methodology consists of (i) processing and analyzing, separately, the datasets collected from Scopus and Sigarra to obtain statistical figures characterizing both areas of activity, and (ii) testing the research and teaching information to find out whether or not those data are correlated. The results show that the MIEM teaching staff has good publication rating, with (i) group h-index 117, (ii) 4 publications per capita in 2020, (iii) 23% owing more than 100 and 9% more than 200 works published, (iv) 22% having more than 1500 and 11% more than 3000 citations, and (iv) 19% holding h-index greater than 24 and 7% greater than 40. However, the distributions of research indicators are uneven, with (i) 50% of the staff contributing merely with 10% of the publications, (ii) 41% having less than 300 citations, and (iii) 43% holding h-index below 10. With respect to teaching, the MIEM staff is highly appreciated by the students. The average score over the period 2016–2020 is close to 5.3 points out of 7, with 19% receiving more than 6.0 and 51% more than 5.3. The scores are evenly distributed, with just 4% individuals rated below 4.0. Finally, it was found that the research and teaching data are not correlated (Pearson correlation coefficient less than 0.1), which strengthens the idea that all elements of the teaching staff can potentially be good on both components of activity, possibly, just needing appropriate stimuli and recognition.
Atomic Data for Opacity Calculations

Theoretical methods, emphasizing on various physical effects with a variety of accuracy, have been employed to obtain the atomic data for opacity calculations. For energy levels and oscillator strength, one‐ and multi‐ configurational self‐consistent schemes in both full relativistic and non‐relativistic forms have been used to show how the detailed treatment of the electronic correlations and the relativistic effects, affects the finally calculated opacity. Quantum mechanical and semi‐classical approaches have been used to deal with the electron impact broadening of the spectral lines. One channel and multi‐channel close‐coupling approaches have been applied in the calculations of the photoionization cross sections. With the channel coupling, we have shown the importance of the autoionization effects for the transmission spectra. As examples, x‐ray transmission spectra and the spectra‐resolved opacities of Al, Fe, and Au are presented based on the so‐called detailed‐term (or level)‐accounting treatments for the atomic data.
Texture Parameters Measured by UHF-MRI and CT Scan Provide Information on Bone Quality in Addition to BMD: A Biomechanical Ex Vivo Study

The current definition of osteoporosis includes alteration of bone quality. The assessment of bone quality is improved by the development of new texture analysis softwares. Our objectives were to assess if proximal femoral trabecular bone texture measured in Ultra high field (UHF) 7 Tesla MRI and CT scan were related to biomechanical parameters, and if the combination of texture parameters and areal bone mineral density (aBMD) measured by dual-energy X-ray absorptiometry provided a better prediction of femoral failure than aBMD alone. The aBMD of 16 proximal femur ends from eight cadavers were investigated. Nineteen textural parameters were computed in three regions or volumes of interest for each specimen on UHF MRI and CT scan. Then, the corresponding failure load and failure stress were calculated thanks to mechanical compression test. aBMD was not correlated to failure load (R2 = 0.206) and stress (R2 = 0.153). The failure load was significantly correlated with ten parameters in the greater trochanter using UHF MRI, and with one parameter in the neck and the greater trochanter using CT scan. Eight parameters in the greater trochanter using UHF MRI combined with aBMD improved the failure load prediction, and seven parameters improved the failure stress prediction. Our results suggest that textural parameters provide additional information on the fracture risk of the proximal femur when aBMD is not contributive.
Homeomorphic conjugates of Fuchsian groups.

By a Fuchsian group we mean a discrete subgroup of M. It may contain also orientation reversing elements. Usually a Fuchsian group is thought to act on I) but this is not a problem since the action on S can be uniquely extended to an action on 1) and later we might also consider a Fuchsian group to act on 1), depending on the situation. We are here concerned with the Problem. When is a group G ofhomeornorphisms of S topologically conjugate to a Fuchsian group? We propose that this happens if and only if G is a convergence group of S which means that it satisfies the convergence property. This means that whenever gi ~ G are distinct, we can pass to a subsequence in such a way that, for some a, b c S,
Mathematical analysis of some differential models involving the Euclidean or the Minkowski mean curvature operator

This thesis is devoted to the study of some differential models arising in fluid mechanics or general relativity and involving the mean curvature operators in the N -dimensional Euclidean or Minkowski spaces, respectively given by 1 N div ( ∇u √ 1± |∇u|2 ) . In both cases the operators are quasilinear elliptic operators which do not satisfy the property of uniform ellipticity, the Euclidean mean curvature operator 1 N div ( ∇u/ √ 1 + |∇u|2 ) being degenerate, whereas the Minkowski mean curvature operator 1 N div ( ∇u/ √ 1− |∇u|2 ) being singular. This work is subdivided into three parts. The first one concerns the study of the periodic solutions of the one-dimensional prescribed curvature equation in the Euclidean space, which models capillarity-type phenomena. The equation of interest is the following: − ( u′ √ 1 + u′2 )′ = f(t, u). According to the structure of the curvature operator and imposing a suitable behaviour at zero, or at infinity, of the prescribed curvature f , we prove the existence of infinitely many arbitrarily small classical subharmonic solutions with suitable nodal properties, or bounded variation subharmonic solutions with arbitrarily large oscillations. The technique for the search of classical solutions is topological and relies on the use of the rotation number and on a generalization of the Poincare-Birkhoff theorem; whereas the approach for the study of non-classical solutions is based on non-smooth critical point theory, namely on a mountain pass lemma set in the space of bounded variation functions. The second part of the thesis is devoted to the study of the homogeneous Dirichlet problem associated with an anisotropic prescribed mean curvature equation in the Euclidean space, which provides a model for describing the geometry of the human cornea. The problem under consideration is the following:  −div ( ∇u √ 1 + |∇u|2 ) = −au+ b √ 1 + |∇u|2 in Ω, u = 0 on ∂Ω. Here a, b are positive parameters and Ω is a bounded domain in R with Lipschitz boundary. This chapter is subdivided into three sections, which are focused on the one-dimensional, the
On the modeling of scalar diffusion in isotropic turbulence

The objectives of this paper are (i) to establish analytically some important features of the scalar diffusion process in turbulence and (ii) to derive a closure model for this process in terms of the scalar probability density function (pdf). The present analysis shows that in isotropic turbulence the conditional scalar dissipation [χ(ψ)=D<∂φ/∂xi∂φ/∂xi‖φ=ψ≳], its derivative (∂χ/∂ψ), and the conditional scalar diffusion [Θ(ψ)=D<∂2φ/∂xi ∂xi‖φ=ψ≳] are zero at the extreme values of scalar concentration. Models for conditional‐dissipation ratio (χ/es) and conditional‐diffusion ratio (Θ/es) are derived from the observation [Girimaji, Combust. Sci. Technol. 78, 177 (1991); NASA Contract. Rep. CR 4446 (1992)] that the scalar pdf can be characterized by the β pdf at all stages of non‐premixed mixing. The conditional‐dissipation model is compared with the DNS data of Eswaran and Pope [Phys. Fluids 31, 506 (1988)] and the mapping‐closure‐based model [O’Brien and Jiang, Phys. Fluids A 3, 3121 (1991)]. The applicatio.
A review of angle-resolved photoemission spectroscopy study on topological magnetic material family of MnBi2Te4

The MnBi2Te4 family compounds have drawn enormous attention in recent years due to their potential to realize the high-temperature quantum anomalous Hall effect. As one of the most direct techniques to probe electronic structure, angle-resolved photoemission spectroscopy (ARPES) has been widely applied to investigate the interplay between the magnetism and non-trivial topological band structure of MnBi2Te4 family materials. Here, we briefly review some of latest progress in ARPES study of MnBi2Te 4⋅ (Bi2Te3) (n = 0, 1, 2, 3) and analogous MnSb2Te 4⋅ (Sb2Te3)2 (n = 1, 2) series of materials. Aside from the direct observation of the non-trivial topological band structure, ARPES results reveal that their surface band gap can be well modulated by both temperature and Bi2Te3 interpolation. In addition, although ARPES results of the topological surface states are still under hot debate, the extensive experimental results have provided an opportunity to shed light on the complex interactions in intrinsic magnetic topological insulator.
Mediating Role of Child’s Executive Function Deficits in the Association of Parenting and School Success

This study aims to explore the role of a child’s executive function deficits in the association of positive and negative parenting styles and practices with school success at early school age. A sample consisted of 174 parents who completed the Parenting Style Questionnaire, the Parental Acceptance-Rejection Questionnaire, and the Childhood Executive Functioning Inventory. Structural equation modelling analyses revealed complete mediation of authoritarian parenting style, parental hostility/aggression and indifference/neglect on child’s low literacy and mathematics achievement by child’s executive function deficits. In contrast, the mediating role of child’s executive function deficits in the relationship between authoritative parenting style and parental warmth/affection and school success was not confirmed. The results of the study indicate that executive function deficits act as a risk factor in literacy and mathematics achievement of early school-age children whose parents express high levels of negative parenting style and practices. The study suggests that appropriate interventions would have to be focused on parent training and programmes for improving child’s executive functions.
An Analysis of the Studies Conducted in the Field of Curriculum Evaluation from a “Methodology” Perspective

This study analyzed studies done in Turkey in the context of curriculum evaluation (CE) by asking, “How is it made? The study was carried out in two stages. In the first stage, the document analysis method used 215 theses written between 1991 and 2020 on CE were analyzed according to the “thesis review form. ” In the second stage, depth analysis was made through semi-structured interviews with the authors (students) and the field experts (supervisors of the authors) of the theses to make the results of the first stage more understandable. Interviews were conducted with 32 participants. A maximum sampling method was used to determine the participants. The data analysis calculated percentage and frequency values for the data obtained in the first stage. In the second stage, descriptive analysis and content analysis were carried out with the MAXQDA 2020 qualitative data analysis program. The majority of theses did not employ a CE model as a consequence of the research, and the CIPP model was the most popular CE model. Many of the theses were not justified in using the CE model. Model usage increased as time passed to the present day. Many theses used quantitative models but did not explicitly state the sampling technique. Teachers were mainly used in this research as a source for data gathering, and participant numbers ranged from 10 to 50. Additionally, most studies used questionnaires and interviews as the primary data-gathering tools. All of these findings suggest that CE studies have several flaws.
Quantitative Examination of Mobility Lowering Associated with Ultrathin Gate Oxides in Silicon Metal-Oxide-Semiconductor Inversion Layer

In this study, mobility lowering inherent to ultrathin gate oxides is experimentally examined in the silicon metal-oxide-semiconductor (Si MOS) inversion layer, and additional scattering mechanisms associated with gate oxide scaling are discussed, paying attention to the extraction of reliable experimental data on inversion-layer mobility. It is found that poly-Si-gate impurity concentration strongly affects the mobility lowering associated with ultrathin gate oxides, which is quantitatively discriminated from that of Coulomb scattering due to substrate impurities and interface states. This finding indicates the contribution of remote Coulomb scattering due to the gate impurities. In addition, low-temperature measurements reveal that roughness scattering is enhanced, possibly because of the poor Si/SiO2 interface in the initial stage of oxide growth. Therefore, further gate oxide scaling down to 1.5 nm or less can cause remote Coulomb scattering as well as enhanced roughness scattering, resulting in the saturation or decrease in the drive current capability.
Storm‐time electric field distribution in the inner magnetosphere

The distribution of the storm‐time electric field in the inner magnetosphere has been investigated by using the Akebono/EFD data within a period from 1989 to 1995. During the main phase of geomagnetic storms, the strong electric field appears between L = 2 and L = 6 in both dawn and dusk sectors with the magnitude from 2 to 4 mV/m, and the maximum value appears at L = 3 in the dusk sector. During the recovery and weakly disturbed period, the region with intense electric field moves outward with decreasing the amplitude. This structure of the localized electric field is quite different from the Volland‐Stern electric field model, suggesting the existence of another electric field source other than the large‐scale convection electric field. During quiet periods, although the electric field fairly follows the corotation electric field, the distribution at L = 3.5 indicates a small deviation from pure corotation.
Impaired SARS-CoV-2 variant neutralization and CD8+ T cell responses following 3 doses of mRNA vaccines in myeloma: correlation with breakthrough infections.

Multiple myeloma (MM) patients mount suboptimal neutralizing antibodies (nAb) following 2-doses of SARS-CoV-2 mRNA vaccines. Currently circulating SARS-CoV-2 variants of concern (VOC) carry the risk of breakthrough infections. We evaluated immune recognition of current VOC including BA.1, BA.2 and BA.5 in 331 racially representative MM patients following 2 or 3 doses of mRNA vaccines. Third dose increased nAbs against WA1 in 82% but against BA variants in only 33-44% of patients. Vaccine-induced nAbs correlated with RBD-specific class-switched memory B cells. Vaccine-induced spike-specific T-cells were detected in patients without seroconversion and cross-recognized variant-specific peptides but were predominantly CD4+ T-cells. Detailed clinical/immunophenotypic analysis identified features correlating with nAb/B/T cell responses. Patients who developed breakthrough infections following 3 vaccine doses had lower live-virus nAbs, including against VOC. MM patients remain susceptible to SARS-CoV-2 variants following 3 vaccine doses and should be prioritized for emerging approaches to elicit variant-nAb and CD8+ T-cells.
A color gradient in the soft X-ray diffuse background

It is shown that the deviations of the soft X-ray diffuse background B band to C band intensity ratio from a constant value can be described as a simple dipole-like variation across the sky. In terms of the observed Wisconsin B/C band intensity ratio, the mean value is 0.355, the dipole magnitude is 0.106, and the positive dipole axis points toward l = 168.7 deg, b = 11.2 deg, almost in the galactic anticenter direction. This gradient in the spectral hardness can be due to several causes; the simplest is a temperature gradient in the X-ray emitting plasma of the local cavity from about 10 exp 6.2 K toward the galactic center to about 10 exp 5.9 K in the anticenter direction. While the physical origin of such a temperature gradient is uncertain, the alignment of the dipole with the higher temperature (and absorbed) Loop I region may be significant.
Revision to Nomenclature of the Zarah Subgroup of the Kansas City Group (Pennsylvanian) in Kansas

This paper provides a summary review of proposed nomenclatural revisions to the Zarah Subgroup of the Kansas City Group (Pennsylvanian) in Kansas and outlines changes adopted by the Kansas Geological Survey. The Iola Limestone, which comprises in ascending order the Paola Limestone, Muncie Creek Shale, and Raytown Limestone Members, is now considered the basal formation of the Zarah Subgroup. We reinstate the overlying Liberty Memorial Shale as originally defined by Clair (1943) in the area of Kansas City, Missouri. We also restrict the Wyandotte Limestone to include only, in ascending order, the Frisbie Limestone, Quindaro Shale, and Argentine Limestone Members. Furthermore, the Lane Shale is restricted in use and encompasses all strata within the shale-dominated interval between the top of the Argentine Limestone Member of the Wyandotte Limestone and the base of the overlying Plattsburg Limestone. Within the revised Lane Shale, the KGS now formally recognizes, in ascending order, the Lower Farley Limestone, Middle Farley Shale, and Upper Farley Limestone Members. The Bonner Springs Shale is now demoted in rank and included as the uppermost member within the Lane Shale.
Perioperative Analgesic Efficiency of Ultrasound-Guided Quadratus Lumborum Block versus Epidural Analgesia in Bladder Cancer Patients Undergoing Radical Cystectomy

Background and Aim: Multimodal analgesia is currently used for perioperative pain management after Radical cystectomy (RC). This study aimed to compare quadratus lumborum block (QLB) and thoracic epidural block (TEA) in patients subjected to RC. Methods: This prospective randomized controlled study included 34 patients with bladder cancer subjected to RC under general anesthesia, divided into two groups. The Quadratus Group (n=17) underwent bilateral ultrasound-guided continuous QLB, and the Epidural Group (n=17) underwent continuous TEA. The primary outcome was pain intensity measured by VAS score, and the secondary outcomes were total morphine consumption during the first 48 hours after surgery, postoperative nausea score, and patient satisfaction. Results: There were no differences between the two groups in postoperative VAS scores starting immediately after surgery up to 48 hours. Reduction of VAS score after QLB was delayed compared to that after TEA. The two groups had a comparable number of patients requesting rescue analgesia (p = 0.271) and total postoperative morphine consumption (p = 0.976) in the remaining patients. The nausea score was significantly lower in the Quadratus Group than in the Epidural Group (p = 0.020). There was no significant difference between the two groups in the satisfaction score (p=0.612). Few mild complications were detected in the two studied groups. Conclusion: QLB and TEA are safe and effective in managing postoperative pain after radical cystectomy with similar analgesic profiles. QLB was more effective in reducing postoperative nausea and vomiting.
Targeting Macroeconomic Exposures in Equity Portfolios: A Firm-Level Measurement Approach for Out-of-Sample Robustness

Abstract We propose firm-level measures of exposures to macroeconomic risks that substantially improve out-of-sample robustness compared to standard estimation approaches. Systematic equity strategies constructed from such measures offer more consistent macro exposures out of sample than strategies that allocate across sectors or equity-style factors. We do not find significant cost to the performance of such systematic strategies in exchange for targeting exposures to macroeconomic risks, such as interest rates, term spread, credit spread, or inflation. Our methodology can be used to construct equity portfolios for investors who have hedging demands or active views regarding macroeconomic conditions.
Evaluation of Risk as Conducive Environment for Earning Manipulation and Moderation Effect of Corporate Governance: Empirical Study of Listed Indian Firms

Separation of decision-making and risk-bearing functions in dispersed ownership structures offer scope for opportunistic behaviour of managers. Hence necessitate proactive governing mechanism for ratification and monitoring of decisions from the initiation and implementation of the decisions for protection of shareholders as well as stake holders interest. The motive of this paper is to evaluate whether risky behaviour provide conducive environment for earning manipulation and analyze the moderating effect of corporate governance (CG) and ownership attributes in reducing earnings management practices in high risk conditions. A structural Partial least square (PLS) equations model was developed to analyze the relationship and CG constructs moderating role was evaluated. Based on a sample of 270 listed Indian firms in NSE during the period of 9 years from 2007–2008 to 2015–2016 using smart-PLS, it was detected that market risk, financing and investing risk manifold opportunities of managers to maximise their own benefits by manipulating the information in their discretion (discretionary accruals measured through modified Jones Model). CG mechanism constructs like audit, risk and compensation committees, board activities, board characteristics, transparency have been found significant in moderating the relationship between risk and earning management while board composition and ownership structure have failed to restrain the opportunistic behaviour of managers in favourable risky environment contradicting acceptance of efficient monitoring hypothesis and resource based view in India corporate setting.