bluuebunny/crossref_metadata_2025 huggingface dataset:
Spectres marxistes du féodalisme : le passé d’une interprétation ? - 3ème partie
Authors: Dufal Blaise
Published: May 2023

La place du marxisme dans l’historiographie française du xxe siècle et particulièrement dans la médiévistique est assez tenue voire refoulée. Cette étude décrit les différentes formes de pénétration, de dialogue, d’usage ainsi que de refus et d’opposition vis à avis du marxisme de la part des médiévistes français. Ce panorama permet de saisir la singularité d’un moment marxiste particulier qui s’articule autour de la notion de féodalisme à partir de 1963 notamment autour du Centre d’Étude et de Recherche Marxiste. Le travail historique autour de cette notion marxiste est continué par la Société d’Étude du Féodalisme à partir de 1976, notamment par Guy Bois, Alain Guerreau, Jean-Claude Schmitt et Daniel Tollet et déploie de multiples aspects intellectuels, ouvrant à d’importants tournants scientifiques. Cette aventure marxiste marginale dans la médiévistique française se clôt de manière assez abrupte, pour sombrer ensuite dans l’oubli dès la seconde partie des années 1980.
Nietzsche e Mach
Authors: De Paula Santana de Jesus Francisco
Published: May 2023

O presente trabalho tem como objetivo apresentar e discutir a relação entre a filosofia de Friedrich Nietzsche e a teoria sensualista de Ernst Mach. Para tanto, recorremos, sobretudo, ao texto Conhecimento e Erro, de Mach, e aos escritos de maturidade de Nietzsche. Defendemos que tal relação se dá na medida em que ambos recorrem ao campo da fisiologia para expor que os padrões intuitivos pelos quais o pensamento e o conhecimento são produzidos são provenientes da organização nervosa humana e que Nietzsche não se limita a simplesmente assimilar o sensualismo de Mach, mas, ao contrário, se apropria deste em vistas de seu próprio projeto filosófico.
Corpo e constituição em Ideias II
Authors: Dos Reis Gomes Matheus
Published: May 2023

Neste artigo, pretendo demonstrar o reconhecimento fundamental da fenomenologia husserliana diante da dimensão tátil frente à diferenciação da dimensão visual na constituição do objeto externo corpo [Leib-Objekts] em Ideias II. Em primeiro lugar, procuro apresentar a relação entre corpo e sensações localizadas [lokalisierter Empfindungen]. Em segundo lugar, busco definir a constituição do corpo no âmbito tátil diante da dimensão visível para, então, demonstrar a importância das constituições primárias diante da consciência intencional em vista da conclusão de que a constituição do objeto externo corpo em Ideias II ocorre na dimensão tátil e não na dimensão visível.
An Active Externalism about Personality
Authors: Burdman Federico Gabriel
Published: May 2023

People display recognizably characteristic behavioral patterns across time and situations, with a given degree of regularity. These patterns may justify the attribution of personality traits. It is arguably the commonsense view that the proper explanation of these behavioral regularities is given by intrinsic properties of the agent’s psychology. In this paper, I argue for an externalistic view of the causal basis of personality-characteristic behaviors. According to the externalistic view, the relevant behavioral regularities are better understood as the result of a systematic interaction between features internal to the agent and environmental-situational factors. Moreover, if the premise is granted that people are typically able to exercise a certain degree of control over the environmental-situational conditions they find themselves in, the resulting picture is of active sort of externalism, as people may at times engage in selection and manipulation of environmental-situational conditions as a way of managing their own behavioral tendencies.
Articulación entre la causalidad divina y la causalidad del ser creado en Tomás de Aquino
Authors: Serra Pérez Manuel Alejandro
Published: May 2023

Tomás de Aquino sostiene que el ente es constituido por la causalidad fontal divina, que es causa totius esse, pero a la vez advierte que el ente no es por el Esse divino, sino por su propio esse. Esta doble vertiente causal que conforma la estructura metafísica de los entes creados nos obliga a buscar una fórmula que consiga articular estos dos aspectos causales, sin recíproco detrimento. En este artículo nos proponemos hallar esta fórmula partiendo de la naturaleza misma de la causalidad y su fundamento metafísico.
Was there an association made between Geocentrism and Anthropocentrism before the Copernican Revolution?
Authors: Çimen Ünsal
Published: May 2023

Some post-Copernican authors, such as Bernard de Fontenelle and Cyrano de Bergerac, mention an association between geocentrism and anthropocentrism that was broken by the Copernican model. This argument has been criticized by authors such as A. O. Lovejoy, Remi Brague, and Dennis R. Danielson, who argue that the geocentric model of the Universe humiliated man rather than glorified him, since the Earth, as the center of the Universe, was seen as the filthy part of the Universe. So, living on the Earth was not considered a noble status for Man. In this paper, however, I will show that living in the coarser part of the Universe had also been seen in conjunction with having a noble status, and that there was indeed an association made between geocentrism and anthropocentrism before the Copernican Revolution.
Performance of MOS Capacitor with Different Dielectric Material Simulated Using Silvaco TCAD Tools
Authors: Ismail Lyly Nyl , Sihab Norsabrina , Mohd Sauki Nur Sa'adah
Published: May 2023

Metal oxide semiconductor (MOS) capacitor is a trilayer device that comprises of metal, dielectric, and semiconductor layer. The advancement of MOS technology has greatly give huge improvement to MOS devices which lead to scaling down the MOS devices. The reduction of dielectric thickness of conventional dielectric material has coming to an end, therefore as alternative new material with high mobility carrier is suggested to overcome the problem. The objectives of this work are to study the performance of MOS capacitor. Two parameters were varied, first the semiconductor material which is silicon (Si), germanium (Ge) and silicon germanium (SiGe) and second is the dielectric material that is silicon dioxide (SiO2) and silicon nitride (Si3N4). The performance of the MOS capacitor is evaluated based on the capacitance-voltage (C-V) and current-voltage (I-V) characteristics. Silvaco TCAD tool were use as as simulation tool for the method of investigation. Result shown that the performance of the MOS capacitor increased when Ge and SiGe were used as semiconductor material and Si3N4 as dielectric layer. It can see that with VT of 4.15 V for MOS with Ge and 4.28 V for MOS with SiGe. For the C-V properties Cmax value for both devices are F and F, respectively. The results show that there is around 100% increment in capacitance value when Ge is used as semiconductor layer but there is no increment or decrement in capacitance value when SiGe is used. Based on the obtained results, Ge is chosen as the best semiconductor material.
Fabrication of Nanocomposite PDMS/Graphene as Flexible Substrate at Different Graphene Volume
Authors: Ghazali Irzati Zaili , Awang Robi'atun Adayiah , Herman Sukreen Hana , Zulkifli Zurita
Published: May 2023

Conductive and flexible electronics have attracted great demands and attention in the field of stretchable and wearable electronic devices. In this work, polydimethylsiloxane (PDMS) was composited with different drops of graphene solution to produce flexible, conductive and optically transparent PDMS/Graphene composite using the drop-cast method. The dielectric constants of PDMS and PDMS/Graphene composite were measured using Agilent dielectric probe. I-V characterization was used to measure the conductivity of the flexible substrate in flat and bending conditions. The UV-VIS was used to measure the transmittance properties of the substrate. Comparing the electrical properties of the pristine PDMS substrate with graphene composited PDMS substrates, the current shows a slight decrease due to the physical morphology of PDMS/Graphene composite that creates a small hole on the surface. No significant changes can be found between 1 drop, 2 drops, 3 drops and 4 drops of graphene in PDMS solution. For the dielectric measurement, the result of composited PDMS/Graphene sample had shown a lower value of dielectric constant (1.1 F/m) compared to pure PDMS (2.33 F/m). This shows that the existence of graphene in PDMS reduces the dielectric constant of pristine PDMS. The result of UV-VIS shows the samples with 4 drops of graphene having the lowest visible transmittance. The PDMS/Graphene composite can be concluded as a dielectric material with a lower dielectric constant. It has the potential to be used as a conductive substrate for further flexible interconnect materials since it has a unique electrical feature and robust mechanical strength.
Al Implantation in Sic; Where Will the Ions Come to Rest?
Authors: Linnarsson Margareta K. , Vines Lasse , Hallén Anders
Published: May 2023

In all implantations into crystalline targets, quite a few ions find a path along a crystal channel or plane, so called channeling, and these ions travel deep into the crystal. This paper treats aluminum (Al) implantation in 4H-SiC and show how the crystal lattice will guide incoming ions deep into the target and modify the final dopant distribution. 4H-SiC samples have been implanted with 100 keV Al-ions, in a “random” direction using the wafer miscut angle of 4°, as well as with the impact beam aligned anti-parallel to the [0001] direction. Aluminium concentration versus depth profiles has been recorded by secondary ion mass spectrometry (SIMS). To track the most probable ion paths during stopping process, SIIMPL, a Monte Carlo simulation code based on the binary collision approximation (MC-BCA) has been used. In addition, the remaining ion energy has been extracted from SIIMPL at various depth along the ion path. Our results show that, independent of the used impact angle, some ions will be steered by crystal planes predominantly into the direction and also along the six directions. The energy loss is smaller along these low index axes. Therefore, at a depth of 1.2 μm, some Al ions along a path may still have kinetic energy, more than 40% of the original 100 keV, and continues to move deep into the SiC sample. The mean projected range of 100 keV ions in 4H-SiC is about 120 nm.
Associated factors with hypertension, known poorly controlled hypertension, and newly diagnosed hypertension among people aged 18-70 in Senegal
Authors: Traore Pêngd-Wendé Habib Boussé , Tine Jean Augustin Diégane , Bassoum Oumar , Kane Abdoul , Faye Adama
Published: May 2023

Introduction. In this study, we aimed to determine the factors associated with hypertension, known poorly controlled hypertension, and newly diagnosed hypertension in 2015 to improve the prevention of this pathology in our country.Methods. This was a secondary analysis of the national WHO STEPwise survey database. It had a quantitative, descriptive, and analytical aim. The sampling was done in stratification in three stages of sampling. Statistical analysis was performed using Rstudio 4.0.2 software. It was a descriptive, bivariate, and multivariate analysis using binomial logistic regression for explanatory purposes.Results. The risk factors for being hypertensive among 18-70- year-olds in Senegal in 2015 were: having taken their blood pressure at least once in their life; having taken their cholesterol levels at least once in their life; having received advice to reduce salt consumption; having received advice on how to reduce the amount of sugar; having a lean body mass index; being overweight; being obese III; and being between 35-39 and 65-70 years old. The protective factors are: checking the salt content indicated on the labels; and consuming salt-rich dishes “often” compared to “never”. The risk factors for being newly diagnosed with hypertension among 18-70-year-olds in Senegal in 2015 were: having a history of stroke; having a resting heart rate greater than 80 beats per minute; consuming palm oil; and having high fasting blood sugar. The protective factors are: having a high average number of meals eaten per week not prepared at home; checking the salt content indicated on the label; and being of female sex. The risk factors for being known to have poorly controlled hypertension among 18-70- year-olds in Senegal in 2015 were: judging their reduction in salt consumption as “very important”; and having received advice to reduce their salt consumption. The protective factors are: performing physical activity only when traveling; and limiting the consumption of salty meals.Conclusion. Senegalese family cooking exposes to hypertension, small actions limiting salt consumption strongly protect against hypertension, and simple physical activity during travel strongly protects against hypertension, but the health system is very little proactive in the primordial and primary prevention of hypertension.
Physician's hesitancy in treating COVID-19 patients and its associated occupational risk factors in Indonesia: an online cross-sectional survey
Authors: Soemarko Dewi Sumaryani , Kekalih Aria , Syam Ari Fahrial , Yunihastuti Evy , Herikurniawan Herikurniawan , Yosia Mikhael
Published: May 2023

This cross-sectional survey aims to investigate physician hesitancy in treating COVID-19 patients in Indonesia, particularly among those who have already contracted the disease, along with associated occupational risk factors. The study involved distributing a questionnaire to physicians across the country, using contact information from the Indonesian Physician Association database. The results show that out of the 383 participants, 25.6% experienced moderate symptoms of COVID-19, and 2.9% required critical care. The study found that 20.3% of physicians demonstrated hesitancy to treat suspected, probable, or confirmed COVID-19 patients. Interestingly, older physicians and those with less experience in treating COVID-19 patients were found to have a higher hesitancy rate, while specialist trainees and those working in public hospitals demonstrated the lowest hesitancy. These findings highlight the significant hesitancy among physicians who have suffered from COVID-19 and underline the need for management and policymakers to take further action to address this issue. Understanding the effects and benefits of physician hesitancy in treating COVID-19 patients is crucial for ensuring the effective delivery of healthcare services during pandemics like COVID-19.
Ureteropelvic junction obstruction in children by polar vessels: histological examination result
Authors: Piro Eugenia , Colombini Fabiola , Brugnoni Marta , Perilli Daniele , Abati Laura Caterina , Zocca Veronica , Vallieri Lucia , D'Alessio Antonio
Published: May 2023

In children, ureteropelvic junction obstruction (UPJO) is mostly caused by intrinsic factors (IUPJO) such as abnormal amounts of muscle and collagen deposition; extrinsic UPJO are rare and often due to crossing vessels (CVs). What is not clear is whether there is also intrinsic UPJ pathology in patients with CV. The aim of our study was to compare the histology of the two types of obstruction and to determine whether these histologic features are distinguishable enough to enable to identify the cause of obstruction based on histologic appearance alone. We retrospectively reviewed pathology reports of 38 children with UPJO that underwent surgery in our hospital from 2008 to 2022. The intrinsic and extrinsic groups consisted of 18 and 20 patients, respectively. After ematoxylin-eosin and Gomori's trichrome staining the specimens were scored for fibrosis and muscular hypertrophy in histhopatology, and CD117 antibody were used to detect interstitial Cajal-like cells. In our study, histological analyses revealed no differences between the CV and IUPJO specimens in terms of presence and degree of fibrosis and muscular hypertrophy; likewise, for presence of interstitial Cajal-like cells.
Il fenomeno Aniarti nei 40 anni del contesto italiano
Authors: Drigo Elio
Published: May 2023

Il fenomeno Aniarti  ha le sue radici primordiali alla fine degli anni '60, l'inizio di un'epoca di affermazione ed estensione massiva dei diritti delle persone, con la prospettiva di un incremento generale di risorse disponibili e dopo epoche di limitazioni e compressioni sociali. Le persone e il mondo stavano cambiando in maniera profonda e molto più velo- ce rispetto a tutti i periodi precedenti.
La gestione infermieristica della sedazione profonda in endoscopia digestiva: una revisione narrativa della letteratura
Authors: Minciullo Andrea , Colombo Benedetta , Renzi Erika , Filomeno Lucia
Published: May 2023

La Società Italiana di Endoscopia Digestiva (SIED) ha pubblicato un documento in cui riporta la possibilità di somministrare il Propofol da parte di gastroenterologi e infermieri di endoscopia adeguatamente formati. Al fine di garantire la qualità e la sicurezza della sedazione quando eseguita da personale non anestesista, è necessaria una formazione specifica e adeguata a facilitarne la corretta attuazione che deve essere conforme alle ultime raccomandazioni. Lo scopo di questo studio è verificare l'efficacia e la sicurezza della sedazione profonda in endoscopia gestita da infermieri.
Concussion History and the Emotional and Behavioral Dyscontrol Domains of Health-Related Quality of Life in College Students
Authors: Tracey Allie J. , Zynda Aaron J. , Loftin Megan C. , Pollard-McGrandy Alyssa M. , Valovich McLeod Tamara C. , Covassin Tracey
Published: May 2023

Context

Injury or illness can affect individual perceptions of health status and health-related quality of life (HRQOL). Concussion can result in different symptoms, impairments, and functional limitations that have been found to lower HRQOL. Furthermore, concussion is known to influence the emotional and behavioral dyscontrol domains of HRQOL in pediatric populations; however, this has yet to be explored in other populations.

Objective

To compare individuals with and those without a concussion history and (1) HRQOL and (2) the emotional and behavioral dyscontrol domains of HRQOL in college students.

Design

Cross-sectional study.

Setting

University laboratory setting.

Patients or Other Participants

Of a total of 252 participants (155 women; age = 19.95 ± 1.53 years), 76 (30.2%) had a history of concussion and 176 (69.8%) did not. For participants with a history of concussion, the mean time since injury was 5.29 ± 2.77 years.

Main Outcome Measure(s)

The Patient-Reported Outcome Measures Information System (PROMIS) Global Health, version 1.1, and Quality of Life in Neurological Disorders Emotional and Behavioral Dyscontrol Short Form (Neuro-QOL).

Results

No differences were seen between median scores in individuals with and those without a history of concussion in the PROMIS Physical Health (13.0 versus 14.0; P = .24), PROMIS Mental Health (12.0 versus 12.0; P = .99), and Neuro-QOL (16.0 versus 16.0; P = .47) scores. Additionally, when gender was controlled, the associations between a history of concussion and PROMIS Physical Health score (odds ratio [OR] = 1.04; 95% CI = 0.43, 2.52), PROMIS Mental Health score (OR = 0.66; 95% CI = 0.13, 3.25), and Neuro-QOL score (OR = 1.16; 95% CI = 0.66, 2.04) were not significant.

Conclusions

Preliminary findings suggested that the emotional and behavioral dyscontrol domains were not influenced by a concussion history of > 1 year in college-aged participants. Future researchers should continue to explore specific HRQOL domains affected by concussion as well as the influences of prior mental health conditions and behavioral dysfunction after a subsequent injury.
Stress, Sport Anxiety, Neuroticism, and Coping in Student-Athletes: Implications for Patient Mental Health
Authors: Contreras David William , Granquist Megan D. , Martin Luci A.
Published: May 2023

Context

Patients’ mental health has been recognized as important in providing patient-centered care in athletic training.

Objective

To evaluate stress, sport anxiety, neuroticism, and coping in student-athletes.

Design

Cross-sectional study.

Setting

University athletics.

Patients or Other Participants

The sample comprised 86 student-athletes competing in National Collegiate Athletic Association (NCAA) Division III.

Main Outcome Measure(s)

The Perceived Stress Scale, Sport Anxiety Scale-2, neuroticism scale of the Big Five Inventory, and Brief COPE were used to measure stress, sport anxiety, neuroticism, and coping, respectively.

Results

Sport anxiety was positively related to stress (r = 0.446, P < .001) and neuroticism (r = 0.311, P < .01) and not related to emotion-focused coping (r = 0.270, P = .804). Neuroticism was a negative predictor of emotion-focused coping (b = −0.373, P < .001), and sport anxiety and stress were predictors of dysfunctional coping (b = 0.120, P < .05; b = 0.037, P < .05). Stress, sport anxiety, and neuroticism were not predictors of problem-focused coping.

Conclusions

Support was evident for the relationship among stress, sport anxiety, neuroticism, and coping in NCAA Division III student-athletes. Such results warrant future exploration to inform behavioral interventions targeting student-athlete psychosocial factors to promote improved performance, reduce injury risk factors (eg, stress, personality, coping), and enhance student-athlete mental health and well-being.
Thrombosis praecox: Thromboembolic complication preceding the onset of overt Nephrotic syndrome in a patient with Membranous Nephropathy
Authors: Sejpal Kapil Navin , Priyamvada PS , Parameswaran Sreejith , Ganesh Rajesh Nachiappa , Chellappan Anand
Published: May 2023

Thromboembolism is a well-recognized complication of Nephrotic syndrome. In adults, most thromboembolic events occur following the diagnosis of Nephrotic syndrome or during relapses. There is a paucity of literature describing thromboembolic events preceding the appearance of overt nephrotic state. Unless a high index of suspicion is maintained, the diagnosis of Nephrotic syndrome could be missed. We describe a patient of Primary Membranous Nephropathy whose clinical course was marked by thrombotic events - Pulmonary embolism and brachial artery thrombosis, occurring six months prior to the presentation with Nephrotic syndrome.
Double the trouble
Authors: Loquero Cristyne G. , Yiu-Senolos Mona Ethellin L.
Published: May 2023

Genetic errors and teratogenic events during embryonic development can lead to congenital abnormalities of the female reproductive tract. Many patients are asymptomatic, while some have major abnormalities that can cause severe impairment of menstrual and reproductive functions. This case report focuses on Müllerian anomaly Class III, uterine didelphys, along with obstructed hemivagina and ipsilateral renal agenesis (the Herlyn–Werner–Wunderlich syndrome [HWWs]). The patient presented with cyclic pelvic pain due to the hematometra and hematocolpos. She initially underwent resection of the vaginal septum but had a recurrence of obstructive symptoms more than a year after vaginal surgery was performed. This prompted further evaluation with magnetic resonance imaging revealing cystic dilatation of the right uterine horn and a hypoplastic right vagina appearing to end blindly. The patient subsequently underwent hemihysterectomy. The right hemiuterus was noted to have a depression on its thickened inferior aspect, but no cervix was identified. This case is a variant of the classic HWWS, as there was cervical atresia on the right uterine corpus. A thorough preoperative evaluation and accurate intraoperative assessment of patients with Müllerian anomalies can decrease misdiagnoses, guide appropriate intervention, and decrease the risk of future reproductive complications.
An overview on extremals and critical points of the Sobolev inequality in convex cones
Authors: Roncoroni Alberto
Published: May 2023

In this survey, we consider the sharp Sobolev inequality in convex cones. We also prove it by using the optimal transport technique. Then we present some results related to the Euler–Lagrange equation of the Sobolev inequality: the so-called critical

p

-Laplace equation. Finally, we discuss some stability result related to the Sobolev inequality.
Semiregular Gosset polytopes
Authors: Berestovskii Valerii Nikolaevich , Nikonorov Yurii Gennadyevich
Published: May 2023

The paper is devoted to the study of metric properties of semiregular polytopes in Euclidean spaces $\mathbb{R}^n$ for $n\geqslant 4$ (Gosset polytopes). The results obtained here enable us to complete the classification of regular and semiregular polytopes in Euclidean spaces whose sets of vertices form normal homogeneous or Clifford-Wolf homogeneous metric spaces.
Approximative and structural properties of sets in asymmetric spaces
Authors: Tsar'kov Igor' Germanovich
Published: May 2023

Structural and approximative properties of sets implying their solarity are studied.
It is shown that, in any finite-dimensional
polyhedral space, each strict sun admits a continuous $\varepsilon$-selection for all $\varepsilon>0$ and
the metric projection onto it has cell-like values.
In general asymmetric spaces, sufficient conditions for solarity of Chebyshev sets
are put forward.
Synchronization of finite automata
Authors: Volkov Mikhail Vladimirovich
Published: May 2023

A survey of the state-of-the-art of the theory of synchronizing automata is given in its part concerned with the case of complete deterministic automata. Algorithmic and complexity-theoretic aspects are considered, the existing results related to Černý's conjecture and methods for their derivation are presented.
Bibliography: 193 titles.
Weight systems and invariants of graphs and embedded graphs
Authors: Kazarian Maxim Eduardovich , Lando Sergei Konstantinovich
Published: May 2023

The recent progress in the theory of weight systems, which are functions on the chord diagrams satisfying the so-called 4-relations, is described. Most attention is given to methods for constructing concrete weight systems. The two main sources of the constructions discussed are invariants of the intersection graphs of chord diagrams that satisfy the 4-term relations for graphs, and metrized Lie algebras. In the simplest non-trivial case of the metrized Lie algebra $\mathfrak{sl}(2)$ the recent results on the explicit form of the generating functions of the values of a weight system on important series of chord diagrams are presented. The computations are based on the Chmutov-Varchenko recurrence relations. Another recent result presented is the construction of recurrence relations for the values of the $\mathfrak{gl}(N)$-weight system. These relations are based on Kazarian's idea of extending the $\mathfrak{gl}(N)$-weight system to arbitrary permutations. In a number of recent papers an approach to the extension of weight systems and graph invariants to arbitrary embedded graphs was proposed, which is based on an analysis of the structure of the relevant Hopf algebras. The main principles of this approach are described. Weight systems defined on embedded graphs correspond to finite-order invariants of links ('knots' with several components). Bibliography: 65 titles.
Spectral inequality for Schrödinger's equation with multipoint potential
Authors: Grinevich Petr Georgievich , Novikov Roman Gennadievich
Published: May 2023

Schrödinger's equation with potential that is a sum of a regular function and a finite set of point scatterers of Bethe-Peierls type is under consideration. For this equation the spectral problem with homogeneous linear boundary conditions is considered, which covers the Dirichlet, Neumann, and Robin cases. It is shown that when the energy $E$ is an eigenvalue with multiplicity $m$, it remains an eigenvalue with multiplicity at least $m-n$ after adding $n<m$ point scatterers. As a consequence, because for the zero potential all values of the energy are transmission eigenvalues with infinite multiplicity, this property also holds for $n$-point potentials, as discovered originally in a recent paper by the authors.
Bibliography: 33 titles.
On zeros, bounds, and asymptotics for orthogonal polynomials on the unit circle
Authors: Lubinsky Doron Shaul
Published: May 2023

Let $\mu$ be a measure on the unit circle that is regular in the sense of Stahl, Totik and Ullmann. Let $\{\varphi_{n}\}$ be the orthonormal polynomials for $\mu$ and $z_{jn}\}$ their zeros. Let $\mu$ be absolutely continuous in an arc $\Delta$ of the unit circle, with $\mu'$ positive and continuous there. We show that uniform boundedness of the orthonormal polynomials in subarcs $\Gamma$ of $\Delta$ is equivalent to certain asymptotic behaviour of their zeros inside sectors that rest on $\Gamma$. Similarly the uniform limit $\lim_{n\to \infty}|\varphi_{n}(z)|^{2}\mu'(z)=1$ is equivalent to related asymptotics for the zeros in such sectors.
Bibliography: 27 titles.
The predicate version of the joint logic of problems and propositions
Authors: Onoprienko Anastasiya Aleksandrovna
Published: May 2023

We consider the joint logic of problems and propositions $\mathrm{QHC}$ introduced by Melikhov. We construct Kripke models with audit worlds for this logic and prove the soundness and completeness of $\mathrm{QHC}$ with respect to this type of model. The conservativity of the logic $\mathrm{QHC}$ over the intuitionistic modal logic $\mathrm{QH4}$, which coincides with the ‘lax logic’ $\mathrm{QLL}^+$, is established. We construct Kripke models with audit worlds for the logic $\mathrm{QH4}$ and prove the corresponding soundness and completeness theorems. We also prove that the logics $\mathrm{QHC}$ and $\mathrm{QH4}$ have the disjunction and existence properties.
Bibliography: 33 titles.
On holomorphic mappings of strictly pseudoconvex domains
Authors: Sukhov Alexandre Borisovich
Published: May 2023

We study the boundary regularity of proper holomorphic mappings between strictly pseudoconvex domains with boundaries of class $C^2$. In the second part of the paper we establish an extension of the Wong-Rosay theorem to piecewise smooth strictly pseudoconvex domains.
Bibliography: 37 titles.
Semiregular solutions of elliptic boundary-value problems with discontinuous nonlinearities of exponential growth
Authors: Pavlenko Vyacheslav Nikolaevich , Potapov Dmitriy Konstantinovich
Published: May 2023

An elliptic boundary-value problem with discontinuous nonlinearity of exponential growth at infinity is investigated. The existence theorem for a weak semiregular solution of this problem is deduced by the variational method. The semiregularity of a solution means that its values are points of continuity of the nonlinearity with respect to the phase variable almost everywhere in the domain where the boundary-value problem is considered. The variational approach used is based on the concept of a quasipotential operator, unlike the traditional approach, which uses Clarke's generalized derivative.
Bibliography: 29 titles.
A circle criterion for a generalized cross graph in terms of minimal excluded minors
Authors: Ilyutko Viktor Petrovich , Ilyutko Denis Petrovich
Published: May 2023

Geelen and Oum described classes of minimal excluded pivot-minors for a simple graph to be a circle graph
and for a delta-matroid to be Eulerian. Pivot-equivalence classes of circle simple graphs and delta-matroids arise in the investigation of Eulerian cycles on cross graphs (4-valent graphs with cross structure). The results established by Geelen and Oum rely on some lemmas in their work, which are shown below to be not quite correct.
We consider generalized cross graphs, which arise in the description of rotating circuits on cross graphs. For such graphs we derive a circle criterion: we reproduce and augment the arguments due to Geelen and Oum, and we improve some incorrectly formulated statements. As a result, we obtain the same list of 166 inequivalent graphs, the minimal excluded minors for a generalized cross graph to be a circle graph.
Bibliography: 14 titles.
Uniformly and locally convex asymmetric spaces
Authors: Tsar'kov Igor' Germanovich
Published: May 2023

The nonemptyness of the intersections of nested systems of convex bounded closed subsets of uniformly convex asymmetric spaces is studied. The density properties of the points of existence and points of approximative uniqueness are examined for nonempty closed subsets of uniformly convex asymmetric spaces. Problems of the existence and stability of Chebyshev centres are considered; the
relationships between $\gamma$-suns, suns and the existence of best approximants are investigated. Sufficient conditions for radial $\delta$-solarity are obtained.
Bibliography: 27 titles.
Coincidence of set functions in quasiconformal analysis
Authors: Vodopyanov Sergei Konstantinovich
Published: May 2023

It is known that mappings occurring in quasiconformal analysis can be defined in several equivalent ways: 1) as homeomorphisms inducing bounded composition operators between Sobolev spaces; 2) as Sobolev-class homeomorphisms with bounded distortion whose operator distortion function is integrable; 3) as homeomorphism changing the capacity of the image of a condenser in a controllable way in terms of the weighted capacity of the condenser in the source space; 4) as homeomorphism changing the modulus of the image of a family of curves in a controllable way in terms of the weighted modulus of the family of curves in the source space. A certain set function, defined on open subsets, can be associated with each of these definitions. The main result consists in the fact that all these set functions coincide.
Bibliography: 48 titles.
Some applications of growth in $\mathrm{SL}_2(\pmb{\mathbb{F}}_p)$ to the proof of modular versions of Zaremba's conjecture
Authors: Lyamkin Mikhail Vladimirovich
Published: May 2023

Using growth in $\mathrm{SL}_2(\mathbb{F}_p)$ we prove that for every prime number $p$ and any positive integer $u$ there are positive integers $q=O(p^{2+\varepsilon})$, $\varepsilon > 0$, $q \equiv u \pmod{p}$, and $a < p$, $(a, p)=1$, such that the partial quotients of the continued fraction of $a/q$ are bounded by an absolute constant.
Bibliography: 21 titles.
Convergence criterion for quantum relative entropy and its use
Authors: Shirokov Maksim Evgenievich
Published: May 2023

A criterion and necessary conditions for the convergence (local continuity) of quantum relative entropy are obtained. Some applications of these results are considered. In particular, the preservation of the local continuity of quantum relative entropy under completely positive linear maps is established.
Bibliography: 29 titles.
Case Report: Necrotizing Erythema Nodosum as a Manifestation of Lepromatous Leprosy Relapse 50 Years after the Initial Infection
Authors: Galeano Juan , Contreras Alejandra , Pabón Lorena , Ruiz Ana C. , Serrano-Coll Héctor , Arboleda Margarita
Published: May 2023

Leprosy is a chronic infection caused by Mycobacterium leprae and Mycobacterium lepromatosis that preferentially compromises peripheral nerve, skin, and mucous membranes. Colombia achieved the goal of leprosy elimination in 1997. However, in Urabá (Colombia), there has been an increase in leprosy cases beginning in 2020. This case report shows a leprosy relapse 5 decades after the initial infection debuted as a necrotizing erythema nodosum leprosum. Therefore, long-term follow-up of patients with risk factors for relapse is emphasized, especially those treated before the standard of multidrug therapy (dapsone, clofazimine, and rifampin). This case report stresses the importance the importance of clinical follow-up and surveillance of patients with these events of interest for the public health.
Dynamic Incidence of Typhoid Fever over a 10-Year Period (2010–2019) in Kibera, an Urban Informal Settlement in Nairobi, Kenya
Authors: Ng’eno Eric , Lind Margaret , Audi Allan , Ouma Alice , Oduor Clifford , Munywoki Patrick K. , Agogo George O. , Odongo George , Kiplangat Samuel , Wamola Newton , Osita Mike Powel , Mugoh Robert , Ochieng Caroline , Omballa Victor , Mogeni Ondari D. , Mikoleit Matthew , Fields Barry S. , Montgomery Joel M. , Gauld Jillian , Breiman Robert F. , Juma Bonventure , Hunsperger Elizabeth , Widdowson Marc-Alain , Bigogo Godfrey , Mintz Eric D. , Verani Jennifer R.
Published: May 2023

Typhoid fever burden can vary over time. Long-term data can inform prevention strategies; however, such data are lacking in many African settings. We reexamined typhoid fever incidence and antimicrobial resistance (AMR) over a 10-year period in Kibera, a densely populated urban informal settlement where a high burden has been previously described. We used data from the Population Based Infectious Diseases Surveillance platform to estimate crude and adjusted incidence rates and prevalence of AMR in nearly 26,000 individuals of all ages. Demographic and healthcare-seeking information was collected through household visits. Blood cultures were processed for patients with acute fever or lower respiratory infection. Between 2010 and 2019, 16,437 participants were eligible for blood culture and 11,848 (72.1%) had a culture performed. Among 11,417 noncontaminated cultures (96.4%), 237 grew Salmonella enterica serovar Typhi (2.1%). Overall crude and adjusted incidences were 95 and 188 cases per 100,000 person-years of observation (pyo), respectively. Annual crude incidence varied from 144 to 233 between 2010 and 2012 and from 9 to 55 between 2013 and 2018 and reached 130 per 100,000 pyo in 2019. Children 5–9 years old had the highest overall incidence (crude, 208; adjusted, 359 per 100,000 pyo). Among isolates tested, 156 of 217 were multidrug resistant (resistant to chloramphenicol, ampicillin, and trimethoprim/sulfamethoxazole [71.9%]) and 6 of 223 were resistant to ciprofloxacin (2.7%). Typhoid fever incidence resurged in 2019 after a prolonged period of low rates, with the highest incidence among children. Typhoid fever control measures, including vaccines, could reduce morbidity in this setting.
Hydrogen Fuel Cell Efficiency Improvement with Increased Oxygen Concentration and Adaptive Thermal Management System
Authors: Obuli Karthikeyan N. , Gopi Kannan N. , Langu Venkata Satish , Nanda Kumar J.
Published: May 2023

Sustainable development is the ultimate focus for all the upcoming inventions and innovations in the modern world. Automotive manufacturers contribute their research in terms of producing eco-friendly vehicles since it is proven that internal combustion engine–powered vehicles directly affect the air quality with their polluting exhaust gas. The rapid emergence of zero tailpipe emission vehicles such as electric and fuel cell electric vehicles (FCEVs) obtained the attention of major automotive giants worldwide. owing to their green mobility, battery-operated electric vehicles have already hit the road despite the challenges of recharging time, availability of recharging stations, range-to-weight ratio, and battery life and its recycling process. Drastic upscaling research and development of hydrogen FCEVs paves the way to reach the goal of sustainable transportation with its air cleaning effect, long range, zero tailpipe emission, and quick refueling time. FCEVs run with the help of hydrogen and atmospheric oxygen leaving only pure water and warm air as an exhaust. The efficiency of a proton exchange membrane fuel cell (PEMFC) in FCEVs depends on various internal and external parameters. Research and development in terms of internal parameters with respect to the internal components of a fuel cell stack includes proper fuel and airflow channel design, efficient design of thin gas diffusion layer (GDL), and self-humidifying membrane structure design. On the other hand, the external parameters such as maintaining temperature, pressure and humidity of inlet hydrogen and air and its flow rate, and proper hydrogen recirculating system. In this article, considering the practical limitations of our fuel cell stack, we have considered only external parameters of oxygen concentration and temperature of the fuel cell stack for our experimentation. We did the experiment with oxygen cylinders and concluded that fuel cell stack efficiency increases with the increase in oxygen concentration from 21% to 50%. Also, we concluded that by maintaining the optimum temperature of the fuel cell stack with a variable flow coolant pump, maximum efficiency is retained in the temperature range of 40–55°C.
On equations of fake projective planes with automorphism group of order $21$
Authors: Borisov Lev
Published: May 2023

We study Dolgachev elliptic surfaces with a double and a triple fiber and find explicit equations of two new pairs of fake projective plane with $21$ automorphisms, thus finishing the task of finding explicit equations of fake projective planes with this automorphism group. This includes, in particular, the fake projective plane discovered by J. Keum.

Comment: 19 pages + supplemental files
Assessment of Turning process using the WSM Method
Authors: Arivudainambi J , Muthusamy P , Suresh G
Published: May 2023

Metal turning is a form of machining. It is used to create circular areas by cutting objects. The turning process requires a machine or lathe, a working tool, a fixture, and a cutting tool. A preformed piece of metal is secured to a device. A common process for turning a part includes rotating it while moving a single-point cutting tool parallel to the axis of rotation. This cutting tool works on both the outer and inner surfaces of the part. Factors such as cutting speed, cutting tool, depth of cut, and work-piece are considered in the turning process. In the assessment, the options are Cu, Si, Mn, Mg, and Zn. The results show that Zn ranks first, while Si has the lowest rank. The dataset's value for the Range of Turning process in the WSM (Weighted Sum Model) Method indicates that zinc (Zn) achieves the top ranking.
Technological learning resources to develop A1 students English reading skills
Authors: Muñoz Tiglla Iván Santiago , Herrera Guanoquiza Yajaira Marianela , Gavilanes Moposita Verónica Maricruz
Published: May 2023

Some problems that have arisen after not knowing how to correctly use technological tools to develop reading skills in the English language have been technical difficulties, since students may face technical problems when using technological resources, such as connection problems to Internet, errors in incompatible software or mobile. devices. Therefore, the objective of the research was to implement a technological tool for the development of the reading competence of the English language in the students of the A1 level of the Instituto Superior Tecnológico Cotopaxi. In this research work, a mixed research approach has been used under a multi-method premise, where quantitative and qualitative approaches are mixed. Finally, through the Design Thinking design methodology executed with the help of experts and the PPP foreign language teaching methodology explicitly oriented towards the development of reading competence, it was possible to design technological resources based on web tools that allow the English language learner to appropriate the second language with real communication activities in everyday life.
A REALIDADE AUMENTADA EM CONTEXTO EDUCATIVO: RESULTADOS DE UMA INVESTIGAÇÃO NA PRÁTICA DE ENSINO SUPERVISIONADA NO 1.º CICLO DO ENSINO BÁSICO
Authors: Gil Henrique , Barata Tânia
Published: May 2023

Nos dias de hoje, as Tecnologias da Informação e Comunicação (TIC) são imprescindíveis na sociedade e estão em constante evolução. Contudo, a área da educação parece não acompanhar tão bem essa evolução. As TIC ainda não são implementadas de forma sistemática e regular em contexto educativo, nem são exploradas todas as suas potencialidades no processo de ensino e aprendizagem. De modo a potenciarmos a inclusão das TIC, de forma inovadora e motivadora, introduzimos a tecnologia Realidade Aumentada (RA) em contexto educativo na Prática de Ensino Supervisionada do 1.º Ciclo do Ensino Básico, numa turma de 2.º ano de escolaridade com 21 alunos. Da investigação qualitativa realizada, no âmbito de uma investigação-ação, concluímos que a RA criou novos contextos que permitiram a aquisição de melhores aprendizagens junto dos alunos. A RA, apesar destas atividades terem sido realizadas online devido à pandemia motivada pela COVID-19, permitiu um aumento da observação e da manipulação de diversos ‘objetos’. Por outro lado, a RA também conseguiu mimetizar ambientes e contextos que eram distantes dos alunos, aproximando-os da sua realidade concreta. As TIC e a RA integradas em contexto educativo permitiram criar um ambiente mais estimulante, interativo, motivador e inovador, promovendo e facilitando a aquisição de aprendizagens em alunos que já nasceram na era digital. A utilização das tecnologias digitais, além de ter permitido o desenvolvimento de competências cognitivas, fomentou o desenvolvimento de competências sociais onde a infoinclusão constitui uma premissa fundamental para uma cidadania plena no século XXI.
PERCEÇÕES DOS ESTUDANTES DO POLITÉCNICO DA GUARDA SOBRE O ENSINO E APRENDIZAGEM EM PERÍODO DE CONFINAMENTO
Authors: Ravasco Carla , Rodrigues Florbela
Published: May 2023

Devido às exigências de saúde pública em tempos de COVID 19, as instituições de ensino redefiniram metodologias de ensino aprendizagem. O Instituto Politécnico da Guarda foi uma das instituições que rapidamente respondeu às solicitações. Todo este processo constituiu um conjunto de desafios e de adaptações de formas tradicionais de ensino. Este conjunto de ajustamentos foi, numa primeira fase, precipitado pelo período de confinamento imposto pelos governos. Contudo, o ensino à distância poderá vir a tornar-se novamente uma realidade. Assim, o resultado do ensino à distância deve ser avaliado de um ponto de vista construtivo, de forma a adotar estratégias de melhoria. Com este objetivo em mente, desenvolvemos e aplicámos um inquérito por questionário aos alunos da referida instituição.Desejámos perscrutar a perceção que os estudantes tiveram sobre os seus hábitos de estudo, de acesso à Internet, da gestão do tempo no trabalho realizado à distância. No processo de ensino aprendizagem (à distância) levantamos questões sobre os resultados obtidos e sobre a avaliação das suas próprias aprendizagens académicas. Os resultados demonstram satisfação relativamente aos recursos disponíveis, ainda que os estudantes considerem que aprenderam menos do que presencialmente, apesar de terem obtido classificações de nível semelhante.
IMPACTO DA COVID-19 NA FORMAÇÃO EM TURISMO: DOIS ESTUDOS DE CASO NA ÁREA DE TURISMO E LAZER
Authors: Lemos Fernando , Salgado Manuel
Published: May 2023

Num ambiente geral de mudanças, no qual a educação e a formação em Turismo também está envolvida, necessariamente, e no contexto de pandemia da COVID-19, que afetou o ensino-aprendizagem, desenvolveu-se um estudo em dois cursos de ensino superior com base em dados secundários e primários, bem como fez-se um enquadramento da formação em Turismo a nível nacional, sobretudo para compreender as expetativas dos estudantes, face ao curso e ao seu futuro, particularmente em termos de empregabilidade nos setores da indústria turística. Assim, este estudo pretende dar um contributo para o melhor entendimento da educação na área do Turismo, bem como das implicações da pandemia COVID-19 que obrigou a mudar o paradigma, sobretudo nas perspetivas dos futuros agentes d o mercado de trabalho com formação nesta área, num complexo contexto social, económico e de saúde pública, de grandes dificuldades, exigências e com perspetivas de futuro indefinidas, em particular a curto prazo. Para este efeito, realizou-se uma revisão bibliográfica, bem como dois estudos de caso aplicados numa escola de ensino superior portuguesa, tendo-se aplicado um inquérito por questionário a estudantes de um curso de licenciatura e de um de mestrado na área do Turismo e Lazer. A revisão de literatura e o estudo empírico permitem propor adequações aos modelos de ensino a distância implementados no período do estudo, bem como sugestões de novas ofertas formativas ajustadas às necessidades do mercado de trabalho e aos interesses dos alunos.