bluuebunny/crossref_metadata_2025 huggingface dataset:
VENTRICULOMEGALIA CEREBRALĂ FETALĂ „BORDERLINE“
Authors:   Universitatea de Medicină şi Farmacie, Tîrgu Mureş, Mărginean Claudiu ,   Clinica de Obstetrică-Ginecologie 1, Tîrgu Mureş, Szabo Bela ,   Universitatea de Medicină şi Farmacie, Tîrgu Mureş,   Clinica de Obstetrică-Ginecologie 1, Tîrgu Mureş, Suciu Nicoleta ,   Universitatea de Medicină şi Farmacie, Tîrgu Mureş, Meliţ Lorena ,   Universitatea de Medicină şi Farmacie, Tîrgu Mureş,   Clinica de Pediatrie 1, Tîrgu Mureş, Crişan Andrada Ioana ,   Universitatea de Medicină şi Farmacie, Tîrgu Mureş, Mărginean Maria Oana ,   Universitatea de Medicină şi Farmacie, Tîrgu Mureş, Rolea George ,   Departamentul de Obstetrică-Ginecologie, Spitalul Municipal, Sighişoara
Published: July 2021

Ventriculomegalia reprezintă dilatarea ventriculilor cerebrali peste 10 mm, fiind clasificată în uşoară sau „borderline“ (10-12 mm), moderată (13-15 mm) şi severă (peste 15 mm). Incidenţa variază foarte mult în funcţie de tehnica utilizată şi de vârsta gestaţională. Locul de elecţie pentru măsurarea cea mai exactă a diametrului ventricular este la nivelul glomusului plexului coroid. RMN-ul este o altă metodă de evaluare a creierului fetal care permite, de asemenea, vizualizarea suprafeţei cerebrale. Ventriculomegalia unilaterală este cauzată de obstrucţia morfologică, fizică sau funcţională a orificiului Monro. Ventriculomegalia „borderline“ poate fi asociată cu anomalii cromozomiale, infecţii congenitale, accidente vasculare cerebrale sau hemoragie, precum şi cu alte anomalii extracerebrale. Factori care influenţează prognosticul copiilor diagnosticaţi cu ventriculomegalie uşoară sunt: sexul, vârsta gestaţională, dimensiunea ventriculilor, afectarea uni- sau bilaterală, ventriculomegalie bilaterală simetrică sau asimetrică, progresia ventriculomegaliei – probabil cel mai important factor al prognosticului, regresia ventriculomegaliei. Părinţii trebuie informaţi despre faptul că există limitări ultrasonografice în diferenţierea unei ventriculomegalii „borderline“ izolate şi ventriculomegalie asociată unor altor anomalii oculte, care nu pot fi identificate iniţial în vederea luării unei decizii adecvate. Ecografia fetală de control este de preferat a se efectuat după aproximativ 1-2 săptămâni de la diagnosticul iniţial de „ventriculomegalie“.
SINDROMUL STEVENS-JOHNSON (SSJ) ŞI NECROLIZA TOXICĂ EPIDERMALĂ DE ETIOLOGIE MEDICAMENTOASĂ
Authors:   Clinica Ι Pediatrie, Universitatea de Medicină şi Farmacie, Craiova, Dop Dalia , Stepan Desdemona ,   Clinica Ι Pediatrie, Universitatea de Medicină şi Farmacie, Craiova, Gheonea Cristian ,   Clinica Ι Pediatrie, Universitatea de Medicină şi Farmacie, Craiova, Niculescu Elena Carmen ,   Clinica Ι Pediatrie, Universitatea de Medicină şi Farmacie, Craiova
Published: July 2021

Sindromul Stevens-Johnson (SSJ) şi necroliza toxică epidermală (NTE) sunt afecţiuni rare care apar după administrarea medicamentelor cu risc. Ambele reprezintă grade de severitate ale aceleiaşi afecţiuni şi sunt considerate urgenţe medicale, deoarece sunt potenţial letale. Sunt caracterizate prin sensibilitate cutaneomucoasă, eritem, necroză şi dezlipire buloasă similar arsurilor extinse. În continuare vă prezentăm 3 cazuri de SSJ/NTE a căror etiologie a fost, probabil, medicamentoasă (Paracetamol, Atomoxetinum, Sulfamethoxazolum + trimethoprinum), cu refacere totală după administrarea de imunoglobuline intravenos.
HEMIHIPERTROFIA IZOLATĂ LA SUGAR
Authors:   Clinica Pediatrie 1, Universitatea de Medicină şi Farmacie, Târgu Mureş, Meliţ Lorena Elena , Mărginean Cristina Oana ,   Clinica Pediatrie 1, Universitatea de Medicină şi Farmacie, Târgu Mureş, Bănescu Claudia ,   Departamentul de Genetică Medicală, Universitatea de Medicină şi Farmacie, Târgu Mureş, Damian Raluca ,   Clinica de Neonatologie 1, Universitatea de Medicină şi Farmacie, Târgu Mureş, Dincă Andreea ,   Clinica Pediatrie 1, Universitatea de Medicină şi Farmacie, Târgu Mureş, Mărginean Claudiu ,   Clinica de Obstetrică şi Ginecologie 1, Universitatea de Medicină şi Farmacie, Târgu Mureş
Published: July 2021

Hemihipertrofia sau hemihiperplazia este o boală congenitală rară, a cărei incidenţă este dificil de estimat din cauza faptului că asimetria este foarte uşoară în multe cazuri, rămânând astfel nediagnosticate. Hemihiperplazia poate fi izolată sau asociată unor sindroame genetice. Prezentăm cazul unui sugar, de sex feminin, în vârstă de 6 luni, la care în perioada perinatală s-a ridicat suspiciunea unei hemihipertrofii congenitale, internându-se în clinica noastră din cauza prezenţei unei asimetrii faciale. Examenul obiectiv a scos în evidenţă, de asemenea, pe lângă hemihiperplasia hemifeţei drept, mai evidentă la nivelul frunţii, o hipertrofie a membrului superior şi inferior drepte. Analizele de laborator au identificat o uşoară anemie, nivele crescute ale transaminazelor, precum şi al alfa-fetoproteinei. Ecografia abdominală a decelat uşoară hepatomegalie, iar cea transfontanelară discretă ventriculomegalie şi atrofie frontală. Testul genetic a fost negativ, astfel că diagnosticul final a fost de hemihipertrofie izolată. Reevaluările ulterioare au arătat un nivel al alfa-fetoproteinei în scăderea, fără alte elemente patologice adiţionale. Particularitatea cazului constă în diagnosticarea unei hemihipertrofii izolate la un sugar de 6 luni, cu test genetic negativ, la care s-a observat o uşoară asimetrie facială în momentul naşterii, cu evoluţie ulterioară favorabilă, cu scădere progresivă a nivelului alfa-proteinei şi ecografie abdominală normală.
Detection of 7Be ii in the Classical Nova V5669 Sgr (Nova Sagittarii 2015 No.3)
Authors: Arai Akira , Tajitsu Akito , Kawakita Hideyo , Shinnaka Yoshiharu
Published: July 2021

We report the new detection of 7Be ii in the ultraviolet spectra of V5669 Sgr during its early decline phase (+24 and +28 d). We identified three blueshifted absorption systems in our spectra. The first two, referred to as low- and high-velocity components, were noticeably identified among H i Balmer, Na i D, and Fe ii whose lower energies of transients are low (<4 eV). The third absorption component was identified among N ii, He i, and C ii lines whose lower energy levels are relatively high (9–21 eV). The absorption lines of 7Be ii at 3130.583 Å and 3132.228 Å were identified as the first and second components in our observations. No evidence suggested the existence of Li i at 6708 Å in any velocity components. The estimated number density ratio of lithium relative to hydrogen, which was finally produced by this object using the equivalent widths of 7Be and Ca ii K,

N

(

7

Li
)

/

N

H

final

, is 4.0 ± 0.7 × 10−6. This value is an order of magnitude lower than the average observed values for classical novae wherein 7Be has been detected, and is comparable to the most optimistic value of theoretical predictions.
Binary-stripped Stars as Core-collapse Supernovae Progenitors
Authors: Vartanyan David , Laplace Eva , Renzo Mathieu , Götberg Ylva , Burrows Adam , de Mink Selma E.
Published: July 2021

Most massive stars experience binary interactions in their lifetimes that can alter both the surface and core structure of the stripped star with significant effects on their ultimate fate as core-collapse supernovae. However, core-collapse supernovae simulations to date have focused almost exclusively on the evolution of single stars. We present a systematic simulation study of single and binary-stripped stars with the same initial mass as candidates for core-collapse supernovae (11–21 M
⊙). Generally, we find that binary-stripped stars core tend to have a smaller compactness parameter, with a more prominent, deeper silicon/oxygen interface, and explode preferentially to the corresponding single stars of the same initial mass. Such a dichotomy of behavior between these two modes of evolution would have important implications for supernovae statistics, including the final neutron star masses, explosion energies, and nucleosynthetic yields. Binary-stripped remnants are also well poised to populate the possible mass gap between the heaviest neutron stars and the lightest black holes. Our work presents an improvement along two fronts, as we self-consistently account for the pre-collapse stellar evolution and the subsequent explosion outcome. Even so, our results emphasize the need for more detailed stellar evolutionary models to capture the sensitive nature of explosion outcome.
The 1991 24 hr Ultraviolet Monitoring of 21 Com with IUE
Authors: Monier Richard
Published: July 2021

The comparison of 10 far ultraviolet spectra of 21 Com taken over continuous 24 hr (half of the recently determined rotational period) reveals large variations shortwards of 1700 Å. In contrast, the flux variations at wavelengths larger then 2200 Å are of smaller amplitudes. The large FUV variability is probably caused by changes in the continuous opacity driven by modest horizontal gradients of the abundances of chemical elements over the surface of 21 Com.
Evidence for Multiple Pulse-shape Changes during the Third Chromatic Timing Event of PSR J1713 + 0747
Authors: Lam M. T.
Published: July 2021

Millisecond pulsar J1713 + 0747 recently underwent a drastic change in its pulse shape. The pulsar has undergone two previous “chromatic timing events,” frequency-dependent changes in pulse arrival times, with some evidence for low-amplitude achromatic changes in the pulse shape. Ongoing monitoring efforts of the pulsar show that the latest significant shape change has persisted for several months, longer than the recovery of the behavior in previous events. I examine profiles from the Nançay Radio Telescope presented in Astronomer’s Telegram #14642 and find evidence for multiple profile shapes after the start of the third event, hinting at the possibility of several new mode changes to consider.
Introducing a Real-time Interactive GUI Tool for Visualization of Galaxy Spectra
Authors: Leung Ho-Hin , Wild Vivienne , Carnall Adam , Papathomas Michail
Published: July 2021

To aid the understanding of the nonlinear relationship between galaxy properties and predicted spectral energy distributions (SED), we present a new interactive graphical user interface tool pipes_vis based on Bagpipes. It allows for real-time manipulation of a model galaxy’s star formation history, dust and other relevant properties through sliders and text boxes, with each change’s effect on the predicted SED reflected instantaneously. We hope the tool will assist in building intuition about what affects the SED of galaxies, potentially helping to speed up fitting stages such as prior construction, and aid in undergraduate and graduate teaching. pipes_vis is available online (pipes_vis is maintained and documented online at https://github.com/HinLeung622/pipes_vis, or version 0.4.1 is archived in Zenodo (Leung 2021) and also available for installation through pip install pipes_vis).
Chandrayaan-2 Dual-frequency Synthetic Aperture Radar (DFSAR): Performance Characterization and Initial Results
Authors: Bhiravarasu Sriram S. , Chakraborty Tathagata , Putrevu Deepak , Pandey Dharmendra K. , Das Anup K. , Ramanujam V. M. , Mehra Raghav , Parasher Parikshit , Agrawal Krishna M. , Gupta Shubham , Seth Gaurav S. , Shukla Amit , Pandya Nikhil Y. , Trivedi Sanjay , Misra Arundhati , Jyoti Rajeev , Kumar Raj
Published: July 2021

The Dual-Frequency synthetic aperture radar (DFSAR) system manifested on the Chandrayaan-2 spacecraft represents a significant step forward in radar exploration of solid solar system objects. It combines SAR at two wavelengths (L and S bands) and multiple resolutions with several polarimetric modes in one lightweight (∼20 kg) package. The resulting data from DFSAR support the calculation of the 2 × 2 complex scattering matrix for each resolution cell, which enables lunar near-surface characterization in terms of radar polarization properties at different wavelengths and incidence angles. In this paper, we report on the calibration and preliminary performance characterization of DFSAR data based on the analysis of a sample set of crater regions on the Moon. Our calibration analysis provided a means to compare on-orbit performance with prelaunch measurements, and the results matched with the prelaunch expected values. Our initial results show that craters in both permanently shadowed regions (PSRs) and non-PSRs that are classified as circular polarization ratio–anomalous in previous S-band radar analyses appear anomalous at the L band also. We also observe that material evolution and physical properties at their interior and proximal ejecta are decoupled. For the Byrgius C crater region, we compare our analysis of dual-frequency radar data with the predicted behaviors of theoretical scattering models. If crater age estimates are available, a comparison of their radar polarization properties at multiple wavelengths similar to that of the three unnamed south polar crater regions shown in this study may provide new insights into how the rockiness of craters evolves with time.
Range extension and conservation status of the rare Solanaceae shrub, Solanum conocarpum
Authors: Barrios Sara , Monsegur-Rivera Omar , Heller Thomas , Harrigan Natasha , Grant Keith , Gibney Eleanor , Clubbe Colin , Hamilton Martin
Published: July 2021

The British Virgin Islands and the US Virgin Islands, two island groups located in the Caribbean archipelago, hold unique plant diversity and high endemism. Until recently, Solanum conocarpum was considered a rare plant species endemic to the island of St. John in the US Virgin Islands. Ongoing botanical surveys in this region are revealing new populations and refining our understanding of the distribution of these narrow endemic plant species. The objective of this paper is to assess the conservation status of S. conocarpum, including a review of its geographic range, population numbers, threats and conservation actions needed for its long-term survival.

In this paper, we present new occurrences for S. conocarpum, extending its geographic range to a new island, Tortola and new territory, the British Virgin Islands. Despite this range expansion, this species is evaluated as Endangered (EN), based on Criteria B1b(iii,v)+2b(iii,v)+C2a(i), according to the IUCN Red List Categories and Criteria. The extent of occurrence (EOO = 46 km2) and area of occupancy (AOO = 20 km2) are highly restricted. On St. John (US Virgin Islands), the historically recorded individuals at Reef Bay, Europa Ridge and Sabbat Point are now considered extirpated due to disturbance from development compounded by invasive species, as well as the impact of feral ungulates and drought stress. These threats are impacting the species across the whole island of St. John and contributing to a continuing decline of suitable habitat, despite the island being a National Park. On the island of Tortola, the species occurs on unprotected lands subject to development and habitat modification and decline by feral ungulates. Based on these threats acting separately across the two islands, two locations were defined. The estimated total number of mature individuals ranges between 150 and 250, with the largest subpopulation at Nanny Point in the US Virgin Islands, containing 108 mature individuals. Conservation action, focused on protecting this species' habitat, is urgently needed.
Du style et de la langue chez Alexander von Humboldt
Authors: Péaud Laura
Published: July 2021

Alexander von Humboldt noircit de très nombreuses pages tout au long de sa vie et de sa carrière ; ses lettres, articles et ouvrages s’ajoutant les uns aux autres pour former sa contribution aux sciences géographiques. Le processus d’écriture ne doit pas être considéré chez lui comme purement anecdotique, car il représente au contraire un des pans principaux de son activité scientifique. Avec Ludwig Fleck, on peut qualifier l’acte d’écrire chez Humboldt comme un temps de construction d’un collectif de pensée, dans la mesure où il est action de traduction du monde pour un large public. Humboldt n’ambitionne pas seulement de nouer des liens avec le monde savant, mais de rendre intelligible le monde pour le plus grand nombre. Dans cette optique, il construit un programme d’écriture qui répond à son programme scientifique. Par l’usage de métaphores, par le recours à la description picturale ou à l’artialisation du monde, il met l’accent sur le style ; pas pour minimiser le discours scientifique, mais au contraire pour mieux le faire entendre. En ce sens, le travail humboldtien est autant une œuvre de compréhension du monde que de traduction de ses phénomènes.
Tableaux et voyages : questions d’écritures et d’identité
Authors: Lefort Isabelle
Published: July 2021

Cet article explore les relations qu’entretiennent le Tableau de la géographie de la France de Paul Vidal de la Blache (1903) et le Dépaysement, voyages en France de Jean-Christophe Bailly (2011) autour de leur enquête sur l’identité française. Si le premier s’organise autour d’une logique de « tableau » à visée panoptique, le second explicitement arrimé au principe du voyage, n’en produit pas moins une pluralité de tableaux. En quête tous deux d’une certaine identité française, ils la (re) composent dans leurs relations aux lieux et leurs restitutions. Le statisme du « tableau » ne fait jamais l’économie du mouvement, tandis que le récit de voyages, dans ses étapes, ne fait jamais celle des arrêts sur images. Les tensions entre stabilité et circulation, entre cadrage et mise en mouvement, dessinent progressivement les caractéristiques de l’identité française pour chacun. L’analyse de leurs littérarités respectives et croisées, se concentre sur deux aspects : l’analyse des images et de registres métaphoriques d’une part, l’usage et la fonctionnalité littéraire des noms propres d’autre part. Ces manières d’écrire contribuent toutes deux à des géopoïétiques nationales.
Entre a- temps -tisme et interventionnisme, l’accompagnement à l’épreuve des temps et des temporalités
Authors: Lavigne Adeline , Hintea Dorina
Published: July 2021

Thématique omniprésente, se nichant au cœur même de l’Être Humain, de par la finitude qui l’anime, l’homme entretient une relation singulière avec la notion de temps et de temporalité(s), au gré de ses perceptions, représentations et de sa sensibilité singulière. Cette lecture si personnelle de la toile temporelle, permettant une inscription dans le réel, se voit interférer avec d’autres réalités et acceptions temporelles, plus vastes que l’échelle seule de l’individu. La question « des » temps, « des » temporalités se dessine alors et vient convoquer des questionnements, dans la démarche d’accompagnement inhérente à l’Action Sociale. Considérés comme véritables entités à part entière, les temps, les temporalités, leur articulation, leur superposition, leur synchronisation ou leur exclusion, se révèlent sources d’éclairages et vecteurs de compréhension dans l’accompagnement des personnes accueillies en structures spécialisées.
Note à propos du « métamarxisme » de Jacques Bidet
Authors: Morilhat Claude
Published: July 2021

Partant de la nécessité de rectifier, de dépasser les incertitudes, les insuffisances du Capital , J. Bidet a élaboré, durant les trente dernières années, une ambitieuse théorie générale de la modernité, un « métamarxisme ». Le pivot de cette tentative de « reconstruction » est constitué par la catégorie originale de « métastructure ». Cette catégorie s’appuie sur le couple marché/organisation (emprunté à Marx), toutefois elle se trouve définie, développée dans le cadre de la philosophie politique contractualiste et du paradigme langagier. Mais, à travers cette entreprise théorique de « refondation du marxisme » qui assigne au langage un rôle déterminant, s’évanouissent la portée et la signification du matérialisme marxien.
Rorschach : un homme, une œuvre, un héritage. Les apports de l’École française
Authors: Verdon Benoît , Louët Estelle , Azoulay Catherine , Chabert Catherine
Published: July 2021

À l’occasion du centenaire de la publication de Psychodiagnostic. Interprétation libre de formes fortuite , les auteurs soulignent l’inventivité d’Hermann Rorschach en rappelant les sources vives du fameux test qui porte son nom. De premiers tâtonnements en intuitions géniales, de projets contrariés en collaborations fructueuses, H. Rorschach a posé les bases d’une méthodologie fondamentale dans la démarche d’évaluation du fonctionnement psychique. Grâce à la ténacité des premiers collègues de Rorschach jusqu’aux déploiements contemporains des travaux d’une vaste communauté de chercheurs et de praticiens, dont l’École française, le Rorschach demeure pour les psychologues d’aujourd’hui, et notamment pour ceux qui adossent leur investigation théorique et leur expérience clinique à la psychanalyse, l’objet de réflexions passionnantes sur les processus de pensée, la dynamique pulsionnelle et l’image du corps, la différence entre contenu manifeste et contenu latent, l’articulation des affects et des représentations, les enjeux transférentiels de la situation projective. Défendant la nécessaire rigueur de la formation des praticiens du Rorschach et la confrontation heuristique des apports du Rorschach et d’un test thématique ( tat ), les auteurs insistent sur la contribution indispensable et originale des méthodes projectives à la compréhension de la dynamique du fonctionnement psychique.
La méthode phénoméno-structurale appliquée au Rorschach : temps implicite et temps dérivé
Authors: Barthélémy Jean-Marie , Ternoy Michel
Published: July 2021

Depuis un examen scrupuleux du texte d’origine de Rorschach jusqu’aux recherches cliniques contemporaines dont ils furent constamment partie prenante, les auteurs suivent l’évolution de son épreuve sous le prisme d’une temporalité d’abord ondulant entre implicite et explicite puis prise en compte dans la dynamique complexe d’un « temps dérivé » apte à faire surgir, comme chez son créateur, des caractéristiques singulières de la personne et de la personnalité intégrées à une conception d’ensemble de la vie perceptive, de ses processus de transformations et d’évolution. Ce parcours coïncide avec l’exposé des principes et l’histoire d’une méthode phénoméno-structurale pour partie liée à un de ses outils de référence.
Ces petits riens qui font l’expérience
Authors: Thievenaz Joris
Published: July 2021

Cette contribution s’inscrit dans une approche micrologique de l’expérience en partant du postulat que les processus qui concourent à la construction du sujet se réalisent en partie lors d’activités considérées banales et peu dignes d’intérêt. Une attention particulière est alors portée aux maturations discrètes, aux micro-découvertes situées ou aux infimes sensations qui ne relèvent pas du registre du spectaculaire, du majeur ou du fondamental, mais qui pourtant concourent silencieusement à la formation du sujet. L’analyse de données issues d’une étude conduite en milieu hospitalier est ici l’occasion de montrer ce en quoi l’intelligibilité de ce type de phénomènes suppose de conduire une démarche de recherche au plus près du quotidien des acteurs, en se préoccupant du détail, de l’anecdotique et du trois-fois-rien.
Incidences de l’analyse du travail sur les transformations des sujets et de leur activité : étude de cas en formation des adultes
Authors: Guérin Jérôme
Published: July 2021

Cette contribution s’inscrit dans une approche centrée sur l’analyse de l’activité et a pour but de montrer en quoi et de quelle manière l’enquête scientifique et ses instruments peuvent, potentiellement, contribuer à transformer les sujets, leurs activités et leurs environnements. Elle examine, à nouveaux frais des enquêtes scientifiques sur différents terrains en formation des adultes, les incidences des méthodes de documentation et d’analyse d’activités individuelles et collectives sur l’activité des informateurs et de leur environnement.
Multiple-site deep brain stimulation with delayed rectangular waveforms for Parkinson's disease
Authors: Shi Xia , Zhang Ziheng
Published: July 2021

Deep brain stimulation (DBS) alleviates the symptoms of tremor, rigidity, and akinesia of the Parkinson's disease (PD). Over decades of the clinical experience, subthalamic nucleus (STN), globus pallidus externa (GPe) and globus pallidus internal (GPi) have been chosen as the common DBS target sites. However, how to design the DBS waveform is still a challenging problem. There is evidence that chronic high-frequency stimulation may cause long-term tissue damage and other side effects. In this paper, we apply a form of DBS with delayed rectangular waveform, denoted as pulse-delay-pulse (PDP) type DBS, on multiple-site based on a computational model of the basal ganglia-thalamus (BG-TH) network. We mainly investigate the effects of the stimulation frequency on relay reliability of the thalamus neurons, beta band oscillation of GPi nucleus and firing rate of the BG network. The results show that the PDP-type DBS at STN-GPe site results in better performance at lower frequencies, while the DBS at GPi-GPe site causes the number of spikes of STN to decline and deviate from the healthy status. Fairly good therapeutic effects can be achieved by PDP-type DBS at STN-GPi site only at higher frequencies. Thus, it is concluded that the application of multiple-site stimulation with PDP-type DBS at STN-GPe is of great significance in treating symptoms of neurological disorders in PD.
Some new Hermite-Hadamard type inequalities for generalized harmonically convex functions involving local fractional integrals
Authors: Sun Wenbing ,   School of Science, Shaoyang University, Shaoyang 422000, China, Xu Rui
Published: July 2021

In this paper, we establish a new integral identity involving local fractional integral on Yang's fractal sets. Using this integral identity, some new generalized Hermite-Hadamard type inequalities whose function is monotonically increasing and generalized harmonically convex are obtained. Finally, we construct some generalized special means to explain the applications of these inequalities.
Refined estimates and generalization of some recent results with applications
Authors: Mughal Aqeel Ahmad ,   Department of Mathematics and Statistics University of Lahore, Lahore, Pakistan, Afzal Deeba , Abdeljawad Thabet , Mukheimer Aiman , Baloch Imran Abbas ,   Department of Mathematics and General Sciences, Prince Sultan University, P.O. Box 66833, Riyadh 11586, Saudi Arabia,   Department of Medical Research, China Medical University, Taichung 40402, Taiwan,   Department of Computer Science and Information Engineering, Asia University, Taichung 40402, Taiwan,   Abdus Salam School of Mathematical Sciences, GC University, Lahore, Pakistan,   Higher Education Department, Govt. Graduate College for Boys Gulberg Lahore, Punjab, Pakistan
Published: July 2021

In this paper, we firstly give improvement of Hermite-Hadamard type and Fej$ \acute{e} $r type inequalities. Next, we extend Hermite-Hadamard type and Fej$ \acute{e} $r types inequalities to a new class of functions. Further, we give bounds for newly defined class of functions and finally presents refined estimates of some already proved results. Furthermore, we obtain some new discrete inequalities for univariate harmonic convex functions on linear spaces related to a variant most recently presented by Baloch et al. of Jensen-type result that was established by S. S. Dragomir.
Las ciudades y los juicios de residencia desde el siglo XIII hasta el reinado de los Reyes Católicos: contrapuntos a una narrativa de centralización
Authors: Martín Romera María Ángeles
Published: July 2021

El artículo aborda los juicios de residencia, uno de los hitos de la narrativa de construcción del Estado Moderno en Castilla, con el objetivo de comprender el papel desarrollado por las ciudades en el éxito de un procedimiento que originalmente respondía a una lógica opuesta a la de centralización. El énfasis en la práctica de las residencias y en la documentación local, como las actas concejiles, en lugar de en la legislación, permite aquilatar cuánto de lo propuesto por los Reyes Católicos fue innovación, cuánto fue tomado de la práctica precedente, cuánto fue negociado con las ciudades, y cuánto fueron, tan solo, intenciones que no se correspondieron con la realidad del procedimiento. De esta forma se relativiza el dirigismo regio y se pone en valor a los actores urbanos, concejos y vecinos que, teniendo sus propios intereses y una concepción diferente de las residencias, fueron claves en su desarrollo y consolidación.
Examining the Evolution of E-Government Development of Nations Through Machine Learning Techniques
Authors: Mengesha Niguissie , Ayanso Anteneh
Published: July 2021

Several initiatives have tried to measure the efforts nations have made towards developing e-government. The UN E-Government Development Index (EGDI) is the only global report that ranks and classifies the UN Member States into four categories based on a weighted average of normalized scores on online service, telecom infrastructure, and human capital. The authors argue that the EGDI fails in showing the efforts of nations over time and in informing nations and policymakers as to what and from whom to draw policy lessons. Using the UN EGDI data from 2008 to 2020, they profile the UN Member States and show the relevance of machine learning techniques in addressing these issues. They examine the resulting cluster profiles in terms of theoretical perspectives in the literature and derive policy insights from the different groupings of nations and their evolution over time. Finally, they discuss the policy implications of the proposed methodology and the insights obtained.
Design and Implementation of LMI-Based H2 Control for Vertical Nonlinear Coupled-Tank System
Authors: Esmaeili Jaffar Seyyed , Başçi Abdullah
Published: July 2021

This paper presents the mathematical design and implementation of a robust H_2 output feedback controller for the vertical nonlinear coupled-tank system. Considering the growth of the complicated chemical processes in industries in the last decades, the necessity for the controllers with high robustness and proficiency is demanded. Therefore, to overcome some deficiencies of classical controllers such as Proportional Integral (PI), the robust H_2 output feedback controller is proposed to control the liquid level of the coupled tank system benchmark. Because of the nonlinearity of the system and the interactions between two tanks, the behavior of the controller in terms of the performance and disturbance rejection is on the main scene. The Linear Matrix Inequalities (LMI) is used to derive the design procedure. The effectiveness of the proposed approach in the setpoint tracking is highlighted in comparison with the PI plus feedforward controller and the acceptable results are achieved.
A Multi-Replica-Centered Commit Protocol for Distributed Real-Time and Embedded Applications
Authors: Arun Anupama , Pandey Sarvesh , Shanker Udai
Published: July 2021

Modern multi-site database applications are not only time-driven but also require efficient quality of services with no single-node failure. It might be ideally achieved using database replication techniques. The transactions, being a basic component of these applications, are more likely to miss their deadlines because of requiring unpredictably long time to access remote data items. The temporal validity of data is another issue requiring attention to be paid. To address these problems, a Cluster-Replicas with Efficient Distributed Lazy Update (CRED) protocol is proposed in this paper. The CRED protocol increases the chance of timely execution of transactions and data freshness in an unpredictable workload environment by utilizing the lazy replica update strategy. It reduces the negative impact of the burst workload with a marginal overhead of ensuring timely-updated replicas. The simulation results confirm that the CRED outperforms the ORDER protocol by up to 4%.
Information Management and IoT Technology for Safety and Security of Smart Home and Farm Systems
Authors: Almomani Ammar , Al-Nawasrah Ahmad , Alomoush Waleed , Al-Abweh Mustafa , Alrosan Ayat , Gupta Brij B.
Published: July 2021

Information management collects data from several online systems. They analyze the information. They issue reports about information for supporting decision-making management. Utilizing current modern innovations try to controlling many obstacles such as, high cost, high battery power, and speed system, safety System without building a full system to solve all these problems together, we created a new internet of things ( IoT) system that provides attention to safety, and Security with low cost, low battery power, and high-speed System. As for the information management system. This paper aims at developing an active system for managing most of the smart farm and home obstacles, such issues to deal with the security system for the farm's and house and animal hanger, raining, irrigation and watering system, food supplement system, Also, a network was established to connect all those systems. Connected database storage was used, infra-red, The system is used for monitoring. They send all the collected information back to be maintained. Arduino will be used for programming this system
Three Generations of Solar Cells
Authors: Goswami Romyani
Published: July 2021

In photovoltaic system the major challenge is the cost reduction of the solar cell module to compete with those of conventional energy sources. Evolution of solar photovoltaic comprises of several generations through the last sixty years. The first generation solar cells were based on single crystal silicon and bulk polycrystalline Si wafers. The single crystal silicon solar cell has high material cost and the fabrication also requires very high energy. The second generation solar cells were based on thin film fabrication technology. Due to low temperature manufacturing process and less material requirement, remarkable cost reduction was achieved in these solar cells. Among all the thin film technologies amorphous silicon thin film solar cell is in most advanced stage of development and is commercially available. However, an inherent problem of light induced degradation in amorphous silicon hinders the higher efficiency in this kind of cell. The third generation silicon solar cells are based on nano-crystalline and nano-porous materials. Hydrogenated nanocrystalline silicon (nc-Si:H) is becoming a promising material as an absorber layer of solar cell due to its high stability with high Voc. It is also suggested that the cause of high stability and less degradation of certain nc-Si:H films may be due to the improvement of medium range order (MRO) of the films. During the last ten years, organic, polymer, dye sensitized and perovskites materials are also attract much attention of the photovoltaic researchers as the low budget next generation PV material worldwide. Although most important challenge for those organic solar cells in practical applications is the stability issue. In this work nc-Si:H films are successfully deposited at a high deposition rate using a high pressure and a high power by Radio Frequency Plasma Enhanced Chemical Vapor Deposition (RF PECVD) technique. The transmission electron microscopy (TEM) studies show the formations of distinct nano-sized grains in the amorphous tissue with sharp crystalline orientations. Light induced degradation of photoconductivity of nc-Si:H materials have been studied. Single junction solar cells and solar module were successfully fabricated using nanocrystalline silicon as absorber layer. The optimum cell is 7.1 % efficient initially. Improvement in efficiency can be achieved by optimizing the doped layer/interface and using Ag back contact.
ZnO-CuO Based Inorganic Bulk Heterojunction Solar Cells: Influence of Thickness of the Spin-Coated Bulk-Heterojunction Film
Authors: Kuddus Abdul , Ismail Abu Bakar Md.
Published: July 2021

Facile synthesis of completely inorganic Zinc oxide-Copper oxide (ZnO-CuO) based bulk heterojunction solar cells (BHJSCs) along with the impact of the film thickness on the different properties like morphological, structural, chemical, optical and electrical have been reported in this work. A simple spin-coating technique was used to fabricate the BHJSC. The elemental presence of ZnO and CuO with wurtzite and cubic phase was confirmed by EDX and XRD analysis correspondingly. The surface quality, optical transmittance and the resistivity of spin-coated BHJ films decrease with increasing the the film thickness revealed by morphological, optical and electrical study respectively. The photovoltaic parameters of FTO/ZnO-CuO/Al heterostructure SC like efficiency η, current density Jsc and fill factor also decreased conspicuously, whereas the open circuit voltage was found to increase conversly. Moreover, experimental outcomes indicate, the thickness of the film has inescapable impact on inorganic BHJSCs performances and must take in consideration during cell fabrication.
Utilization of a Curly Toolpath in Friction Stir Welding
Authors: Grimm Tyler J. , Shaffer Derek , Ragai Ihab
Published: July 2021

Friction stir welding (FSW) is an advanced solid-state metal joining technique. This operation fuses adjacent materials through the use of a non-consumable, rotating tool, which is plunged into and travels along the seam of the materials. Since this joining method avoids the bulk melting of the base materials, it is considered a relatively energy efficient process. Additionally, the strength of the base material is often improved due to significant grain refinement resulting from the stirring action of the tool at relatively low temperatures. Another inherent benefit is that the joint thickness, which is dependent on the length of the pin, can be much greater than most other joining processes and can also be well controlled. This joining method conventionally relies on the friction at the tool-base material interface to stir materials. Other research has implemented complex tooling to mechanically enhance this stirring action. However, these tools are often expensive, requiring a high level of capability within industry. In order to improve the weld strength of FSW, a novel toolpath is utilized which significantly improves the mechanical mixing of the constituent materials without the need for complex tooling, such as tools with threaded pins. The path currently investigated forms a curl as it travels both perpendicular and parallel to the joint. This motion is used to extend the stirring action of the tool to regions outside the immediate joint area. It was found that this tool path is effective in improving weld strength under specific process parameters. Constraining the tool's axis normal to the workpiece surface resulted in a void that was formed in the majority of tests; however, this void was eliminated with modification of the process parameters. An uneven distribution of heat was recognized within this testing in which one side of the joint was hotter than the other. This observation may be used in future studies to perform multi-material joining where it is often necessary to increase the temperature of one material more than the other.
Effect of Ionic Liquid on the Properties of Nanocomposites Based on Epoxy/CNT Hardened with MCDEA
Authors: dos Santos Danielle Ferreira , Soares Bluma Guenther
Published: July 2021

Thermosetting systems based on epoxy resin (RE) with the dispersion of carbon nanotubes (CNT), have been extensively studied by the development of high-performance materials with interesting mechanical, thermal and electrical properties that the thermo-rigid system achieves with the addition of CNT, and thus contribute to obtain composites with excellent performance in low amounts of this filler. However, ensuring a good dispersion of these systems is not easy, as CNTs have a great tendency to cluster due to Van der Waals interactions. To assist in the dispersion of the systems, a phosphonium-based ionic liquid, tributyl (ethyl) -phosphonium diethyl phosphate, acted with a double role, as a dispersion agent and catalyst in systems hardened with MCDEA (4,4’-methylenebis (3 - chloro-2,6-diethylaniline), which is a solid compound giving the systems high viscosity, and with the addition of LI improved the dispersion of the systems, as well as the processability in the preparation of the nanocomposites.
The Influence of Wire Type Indentation on Longitudinal Splitting in Pre-Stressed Concrete
Authors: Savić Adrijana , Dastgerdi Aref Shafiei , Peterman Robert J. , Beck B. Terry
Published: July 2021

The important characteristic in the creation of longitudinal splitting cracks in pretensioned concrete members has found to be the geometry of the pre-stressing wire indents. Longitudinal splitting along prestressing tendons can result in severe splitting of prestressed member in the field under loading over time. The research evaluated the influence of wire type indentation on the longitudinal splitting in prestressed concrete members fabricated with different concrete mixtures and different compressive strength of concrete. A key objective was to find the best type of wire to avoid failures in the field. A study was conducted at Kansas State University to understand the effect of wire type on the longitudinal splitting between prestressing steel and prestressed concrete. Three different types of wires will be presented in this paper denoted as “WB”, “WF” and “WQ”. The wires have different parameters which include indent depth, indent width, indent sidewall angle, indent pitch and indent volume.
NADPH Oxidase Limits Collaborative Pattern-Recognition Receptor Signaling to Regulate Neutrophil Cytokine Production in Response to Fungal Pathogen-Associated Molecular Patterns
Authors: Yoo Dae-goon , Paracatu Luana C , Xu Evan , Lin Xin , Dinauer Mary C
Published: July 2021

Chronic granulomatous disease (CGD) is a primary immunodeficiency caused by genetic defects in leukocyte NADPH oxidase, which has both microbicidal and immunomodulatory roles. Hence, CGD is characterized by recurrent bacterial and fungal infections as well as aberrant inflammation. Fungal cell walls induce neutrophilic inflammation in CGD; yet, underlying mechanisms are incompletely understood. This study investigated the receptors and signaling pathways driving aberrant proinflammatory cytokine production in CGD neutrophils activated by fungal cell walls. Although cytokine responses to β-glucan particles were similar in NADPH oxidase–competent and NADPH oxidase–deficient mouse and human neutrophils, stimulation with zymosan, a more complex fungal particle, induced elevated cytokine production in NADPH oxidase–deficient neutrophils. The dectin-1 C-type lectin receptor, which recognizes β-glucans (1–3), and TLRs mediated cytokine responses by wild-type murine neutrophils. In the absence of NADPH oxidase, fungal pathogen-associated molecular patterns engaged additional collaborative signaling with Mac-1 and TLRs to markedly increase cytokine production. Mechanistically, this cytokine overproduction is mediated by enhanced proximal activation of tyrosine phosphatase SHP2–Syk and downstream Card9-dependent NF-κB and Card9-independent JNK–c-Jun. This activation and amplified cytokine production were significantly decreased by exogenous H2O2 treatment, enzymatic generation of exogenous H2O2, or Mac-1 blockade. Similar to zymosan, Aspergillus fumigatus conidia induced increased signaling in CGD mouse neutrophils for activation of proinflammatory cytokine production, which also used Mac-1 and was Card9 dependent. This study, to our knowledge, provides new insights into how NADPH oxidase deficiency deregulates neutrophil cytokine production in response to fungal cell walls.
Cutting Edge: Steroid Responsiveness in Foxp3+ Regulatory T Cells Determines Steroid Sensitivity during Allergic Airway Inflammation in Mice
Authors: Nguyen Quang Tam , Kim Dongkyun , Iamsawat Supinya , Le Hongnga T , Kim Sohee , Qiu Kevin T , Hinds Terry D , Bazeley Peter , O’Shea John J , Choi Jaehyuk , Asosingh Kewal , Erzurum Serpil C , Min Booki
Published: July 2021

Glucocorticoids are a highly effective first-line treatment option for many inflammatory diseases, including asthma. Some patients develop a steroid-resistant condition, yet, the cellular and molecular mechanisms underlying steroid resistance remain largely unknown. In this study, we used a murine model of steroid-resistant airway inflammation and report that combining systemic dexamethasone and intranasal IL-27 is able to reverse the inflammation. Foxp3+ regulatory T cells (Tregs) were required during dexamethasone/IL-27 treatment of steroid-resistant allergic inflammation, and importantly, direct stimulation of Tregs via glucocorticoid or IL-27 receptors was essential. Mechanistically, IL-27 stimulation in Tregs enhanced expression of the agonistic glucocorticoid receptor-α isoform. Overexpression of inhibitory glucocorticoid receptor-β isoform in Tregs alone was sufficient to elicit steroid resistance in a steroid-sensitive allergic inflammation model. Taken together, our results demonstrate for the first time, to our knowledge, that Tregs are instrumental during steroid resistance and that manipulating steroid responsiveness in Tregs may represent a novel strategy to treat steroid refractory asthma.
Rotorcraft Lateral-Directional Oscillations: The Anatomy of a Nuisance Mode
Authors: Agarwal Dheeraj , Lu Linghai , Padfield Gareth  D. , White Mark  D. , Cameron Neil
Published: July 2021

High-fidelity rotorcraft flight simulation relies on the availability of a quality flight model that further demands a good level of understanding of the complexities arising from aerodynamic couplings and interference effects. One such example is the difficulty in the prediction of the characteristics of the rotorcraft lateral-directional oscillation (LDO) mode in simulation. Achieving an acceptable level of the damping of this mode is a design challenge requiring simulation models with sufficient fidelity that reveal sources of destabilizing effects. This paper is focused on using System Identification to highlight such fidelity issues using Liverpool's FLIGHTLAB Bell 412 simulation model and in-flight LDO measurements from the bare airframe National Research Council's (Canada) Advanced Systems Research Aircraft. The simulation model was renovated to improve the fidelity of the model. The results show a close match between the identified models and flight test for the LDO mode frequency and damping. Comparison of identified stability and control derivatives with those predicted by the simulation model highlight areas of good and poor fidelity.