bluuebunny/crossref_metadata_2025 huggingface dataset:
Comunicación organizacional y reputación digital en organizaciones privadas y del tercer sector de México y España
Authors: Ortiz Rodríguez Herlinda
Published: November 2021

La reputación corporativa es un recurso intangible fundamental para que cualquier tipo de organización establezca lazos de confianza con sus públicos. Su gestión debe darse en distintos espacios, con estrategias y herramientas de comunicación acordes a las necesidades de sus públicos. Debido al surgimiento del internet, ha emergido la reputación online como un espacio importante de la gestión de la reputación corporativa, presentando nuevos retos a las organizaciones en su comunicación digital. Por ello, esta investigación se centra en evaluar la reputación digital de organizaciones privadas y del tercer sector de México y España en su red social facebook, con el fin de comparar entre estos dos sectores y países quienes realizan una mejor gestión de su comunicación organizacional. Se realizó a través de un análisis de contenido cuantitativo, en una muestra de 200 organizaciones. Los principales hallazgos fueron que las organizaciones privadas y del tercer de México y España presentan importantes retos en la gestión de su reputación online en su red social facebook.
La administración del almirantazgo en Castilla a finales de la Edad Media: los lugartenientes de Sevilla y Jerez de la Frontera
Authors: Ruiz Pilares Enrique José , Lage Estrugo Lorenzo
Published: November 2021

El almirantazgo de Castilla desde su creación por Alfonso X vivió una profunda transformación desde un oficio de carácter militar a un cargo cortesano. En el siglo XV, cuando fue patrimonializado por el linaje de los Enríquez, sus atribuciones se circunscribían a la justicia y a la percepción de una serie de rentas en el ámbito marítimo, cuya jurisdicción “real” – y no exenta de problemas – era ejercida sobre el reino de Sevilla. Asentados en Medina del Rioseco, los Enríquez delegaron el ejercicio de su oficio en una serie de lugartenientes, en ocasiones criados, en otros casos hombres de negocios. A mediados del siglo XV, uno controló Sevilla y el territorio al norte del Guadalquivir, otro, por su parte, tenía jurisdicción al sur de este río, con sede en Jerez de la Frontera.
Wavelet Processing of Acoustic Emission of VT 1-0 Titanium Alloy under Tension
Authors: Dmitriev A.A.
Published: November 2021

The paper proposes a method for processing acoustic emission signals for calculating informative signal parameters characterizing the stages of plastic deformation and fractures in a loaded titanium alloy. The proposed method has a complex structure that includes digital signal processing algorithms and multivariate data analysis methods. The acoustic emission signals are processed using the mathematical apparatus of the multilevel discrete wavelet transform to obtain the approximation coefficients of the 10-level decomposition. These coefficients characterize the low-frequency features of acoustic emission at various stages of samples loading. The approximation coefficients are further used as informative parameters of acoustic emission signals. Principal components analysis is used to investigate the informative parameters and establish their quantitative relationship with the stages of plastic deformation of titanium by clustering the processed results. Differences in the informative parameters at different stages of plastic deformation of the material are revealed by the following analysis of the clustered results.

The obtained results can be used to develop a new generation of diagnostic devices for acoustic emission measurements.
A KKV-k digitális érettségi életciklusmodellje
Authors: Sándor Ágnes , Gubán Ákos
Published: November 2021

A vállalatok megpróbálják tartani és erősíteni versenyelőnyüket, ehhez pedig célszerű tisztában lenniük a digitális érettségi szintjükkel. A tanulmány célja egy olyan módszertan bemutatása, mely segítségével meghatározható egy kis- és középvállalkozásnak a digitális érettség életciklusban elfoglalt helye. Ennek alapja az érettségi és digitális érettségi modellek, valamint a vállalati növekedési elméletek. Számos tanulmány és modell készült a digitális érettség meghatározására, különböző ágazati szempontok szerint, viszont ezek mind egydimenziósak. Ennek következtében a tanulmány egy olyan többdimenziós modellt javasol a digitális érettség életciklusának meghatározására a kis- és középvállalkozások esetében, amely figyelembe veszi a cégek digitális érettségét, a különböző iparágak IT-intenzitását, valamint szervezeti sajátosságait. A modell öt érettségi szintet határoz meg jellemzőivel együtt, amelyek az adat és információ szempontjából három szintbe sorolhatók be. Ennek segítségével pontosabb döntéseket hozhatnak a kis- és középvállalkozások, hogy mely területeken szükséges fejleszteniük.
Examining Self-Efficacy of FCS Teachers Following the COVID-19 Modality Switch
Authors: Fish Brittany A. , Jumper Rachel L.
Published: November 2021

This paper presents the results of a nationwide survey of educators for grades 6–12 who specialize in family and consumer sciences education (N 380). The paper examines teacher reports about their self-efficacy in online learning during the switch to off-campus instruction. Data
revealed that district communication to teachers indicating that they were doing a good job and teachers having had prior online interactions with students were significantly related to the teachers' positive perceptions of self-efficacy.
Diabetes mellitus and cancer: a system of insulin-like growth factors
Authors: Frantsiyants E. M. , Surikova E. I. , Kaplieva I. V. , Bandovkina V. A. , Neskubina I. V. , Sheiko E. A. , Morozova M. I. , Kotieva I. M.
Published: November 2021

Diabetes mellitus and malignant tumors are among the most common and complex diseases. Epidemiological studies have shown a strong relationship between these pathologies. The causality of this relationship has not yet been unambiguously established, but a number of probable biological mechanisms have been proposed to explain it through the effects of hyperglycemia, hyperinsulinemia on the process of oncogenesis. An important role in this is played by the axis of insulin-like growth factors, their receptors and binding proteins (IGF / IGFR / IGFBP). The review provides data on the structural elements of the insulin / IGF / IGFR / IGFBP signaling axis and their internal relationships in diabetes mellitus and in the development of malignant tumors. Significant changes in the axis that occur during the formation of the diabetic environment prepare the background, which, under certain conditions, can lead to the stimulation or inhibition of tumor development. The considered signaling system, playing a significant role in the physiology of normal cells, often functions as a decisive factor in the survival of tumor cells, providing fine context-dependent regulation of many cellular processes associated with oncogenesis. However, despite many years of in-depth studies of the pathogenesis of diabetes mellitus and malignant tumors, the molecular mechanisms of the relationship between these pathologies are still largely unclear, and the internal heterogeneity of pathologies complicates research and interpretation of the results, leaving many questions.
Prolactin-releasing peptide increases rat anxiety
Authors: Zhukov D. A. , Markov A. G. , Vinogradova E. P.
Published: November 2021

BACKGROUND: Prolactin-releasing peptide(Prl-RP), in addition to stimulating the production of prolactin, interacts with various parts of the central nervous system, participating in the implementation of many functions that are reflected in behavior.

AIM: The effect of Prl-RP on the anxiety of white Wistar rats was studied since there were no data in the literature on the relationship between Prl-RP and anxiety.

MATERIALS AND METHODS: Anxiety was assessed in two tests. In the elevated plus-maze (EPM), the time spent in the open arms and the number of edge reactions were recorded. In the social preference test, the time spent near a stranger, near a familiar individual, and in neutral territory were recorded.

RESULTS: The administration of Prl-RP at a dose of 10-10 M with a volume of 10 µl in each nostril reduced the time spent by the animals in the open arms of the EPM, and the number of edge reactions. For testing the social interaction, animals were pre-selected for high or low levels of anxiety in the EPM. In rats with initially low levels of anxiety, Prl-RP reduced the time spent near a stranger, indicating an increase in anxiety levels. The behavior of rats with initially high levels of anxiety did not change after application of the Prl-RP.

CONCLUSION: The results of our experiments indicate that the intranasal administration of Prl-RP increases the anxiety of rats.
Clinical guidelines «Obesity in children»
Authors: Peterkova V. A. , Bezlepkina O. B. , Bolotova N. V. , Bogova E. A. , Vasyukova O. V. , Girsh Ya. V. , Kiyaev A. V. , Kostrova I. B. , Malievskiy O. A. , Mikhailova E. G. , Okorokov P. L. , Petryaykina E. E. , Taranushenko T. E. , Khramova E. B.
Published: November 2021

Childhood obesity is an urgent problem of pediatric endocrinology due to the widespread occurrence, the development of metabolic complications and their steady tracking into adulthood. The developed clinical guidelines are the main working tool of the practitioner. They briefly and structurally present the main information about the epidemiology and modern classification of obesity, methods of its diagnosis and treatment based on the principles of evidence-based medicine.
Assessment of the prevalence of anemia in patients with primary hyperparathyroidism: a single-center observational study
Authors: Miliutina A. P. , Gorbacheva A. M. , Ajnetdinova A. R. , Eremkina A. K. , Mokrysheva N. G.
Published: November 2021

BACKGROUND: The combination of primary hyperparathyroidism (PHPT) with anemia was first described in 1931. It remains unclear whether PHPT is the direct cause of anemia, or it develops due to PHPT’s complications. The frequency of PHPT-­associated anemia in the Russian population is unknown.AIM: To assess the prevalence of anemia in patients with PHPT admitted to the Department of Parathyroid Glands Pathology in the Endocrinology Research Centre from January 2017 to August 2020.MATERIALS AND METHODS: The study included patients with PHPT over 18 years old. A single-center observational one-stage one-sample uncontrolled study was carried out. We analyzed laboratory and instrumental data obtained during inpatient examination in accordance with the standards of medical care. Statistical analysis was performed using Statistica 13 (StatSoft, USA) and SPSS (IBM, USA) software packages.RESULTS: The study included 327 patients with PHPT, 28 (9%) men and 299 (91%) women. The median age was 59 years [51; 66]. 26 patients (8%) with anemia were identified. Statistically significant differences between patients with and without anemia were found only in the GFR. Comparison of patients with and without anemia didn’t reveal any significant differences in the incidence of PHPT’s complications.Significant differences in serum hemoglobin concentration and average hemoglobin concentration in erythrocytes were revealed between patients with and without vertebrae fractures. In the group of patients without compression fractures these parameters were higher.In the subgroup of patients with total calcium concentration above 3 mmol/L and PTH above 3 normal values, the incidence of anemia reached 21% (95% CI: 10%; 35%). Within this group we revealed tendencies to higher levels of PTH, ionized calcium and osteocalcin in patients with anemia.CONCLUSION: In general, there was no correlation between hypercalcemia, the degree of PTH elevation and the presence of anemia in patients with PHPT. However, in the subgroup of patients with severe hypercalcemia, there was a relationship between the concentration of PTH, ionized calcium and the presence of anemia. In patients with PHPT and vertebral fractures, significantly lower concentrations of blood hemoglobin and hemoglobin in erythrocytes were observed.
Amor romántico en películas Disney
Authors: Monleón Oliva Vicente
Published: November 2021

La cultura visual del cine de animación recrea unos discursos, mensajes e ideologías en el plano de la ficción que se toman como referentes en la vida real por parte de la audiencia consumidora. En este respecto se destaca la productora estadounidense Disney, que a lo largo de un siglo de existencia ha dispensado una visión colonialista y heteronormativa de la sociedad. Centramos la atención en su colección de “clásicos animados” para analizar de manera cualitativa cómo evoluciona el concepto de amor romántico, cuáles son los estereotipos que perduran y de qué manera dicho término cambia de significado y paradigma según el momento contextual en el que se asienta la trama de las películas. Después de revelar la tendencia de Disney de defender un sentimiento amoroso anacrónico con respecto a la cotidianidad actual, se concluye la idoneidad de similares críticas cinematográficas para contribuir a una alfabetización audiovisual.
Pornografia, abyección y representación: historia de o y sex pictures
Authors: Rodríguez- Ahumada Johanna Fernanda
Published: November 2021

La pornografía y el erotismo han tenido, a lo largo de la historia, umbrales confusos. No obstante, existen características comunes a estos fenómenos que problematizan el espacio de la corporalidad y que generan nuevas estéticas abyectas, cuyo objetivo es rasgar la pantalla de nuestras mediaciones. Dos propuestas son los objetos centrales de esta investigación: la novela Historia de O (1954) de la escritora francesa Pauline Réage, y la serie fotográfica Sex Pictures (1992) de la artista estadounidense Cindy Sherman.
Encuerpamientos. Una propuesta de abordaje posthumano de las relaciones entre cuerpo e imagen en los cruces entre arte, ciencia y tecnología1
Authors: Martin Nadia
Published: November 2021

En este artículo-ensayo la noción de encuerpamiento se propone para pensar, en las intersecciones contemporáneas entre arte, ciencia y tecnología, las relaciones entre cuerpo e imagen desde una perspectiva posthumana. Lejos de los modelos abstractos y universales -como el cuerpo antropomórfico del humanismo moderno- y de las lógicas reproductivas -como las del cuerpo genético de la biomedicina contemporánea-, cada encuerpamiento es un acto creativo, difractario, que ocurre en el encuentro entre el pensamiento o especulación teórica y los casos concretos y situados dentro de las dinámicas semiótico-materiales de lo visual, en los que el mismo imaginario del cuerpo se modula.
“Las tres Américas” una reflexión sobre el proyecto de creación gráfica colectiva en el ámbito universitario internacional (Canadá, México y Colombia)
Authors: Shambo Ferney
Published: November 2021

Este artículo presenta el proyecto “Las Tres Américas” realizado entre tres universidades en América (México, Colombia y Canadá) a partir de las experiencias artís-ticas y académicas de los docentes que participaron en él de forma colectiva, mediante un diálogo “verbal y visual” en el cual se establecieron parámetros de indagación plástica, formatos de construcción gráfica y coordenadas de creación, (“lectura”, interpretación e intervención de las imágenes) para concluir el ejercicio de creación colectiva a “seis manos”.
Louise Bourgeois: metafísica e arte da intimidade
Authors: Alexandre e Castro Paulo
Published: November 2021

Este ensayo se centra, por un lado, en la obra pictórica y, por otro, en las reflexiones filosóficas que produjo Louise Bourgeois y que fueron recogidas en el libro Destruction of the Father. Reconstruction of the Father – Writings and Interviews 1923-1997. Qué conceptos utiliza la artista, cómo los interpreta y expresa, cómo los encaja en una filosofía del arte o la estética (por ejemplo, su controvertida posición frente a Duchamp o su admiración por Francis Bacon), y qué lugar reserva para las emociones, ya sea desde el punto de vista de la creación artística como desde el punto de vista de su vida personal. Tras este análisis, se presentan el concepto de intimidad y la perspectiva de un arte y una metafísica de la intimidad.
Calle14: entre la institucionalidad y la desobediencia epistémica
Authors: Gómez Moreno Pedro Pablo
Published: November 2021

En el año 2006 cuando nos proponíamos elaborar el proyecto de la Revista Calle14 para su institucionalización surgió, entre otras, la pregunta acerca de lo que significa agenciar una revista científica desde el campo de las artes, acogiéndonos a lógicas que aun no comprendíamos muy bien. El subtítulo mismo de ‘revista de investigación en el campo del arte’, da cuenta del debate que en aquellos años sosteníamos en la naciente facultad, cuando pasábamos a ser parte integral de la Universidad Distrital, una institución en la que las ciencias ‘duras’ tienen preponderancia sobre las ciencias humanas, las ciencias sociales y las artes. A la sazón, los conceptos de campo del arte y el de prácticas artísticas eran fundamentales para la construcción de las políticas culturales del Distrito Capital 2004-2016. Y claro está, la Academia Superior de Artes (ASAB) fue un lugar donde se debatió y aportó para la elaboración de esas políticas.
Reliability and validity varies among smartphone apps for range of motion measurements of the lower extremity: a systematic review
Authors: Hahn Sarah , Kröger Inga , Willwacher Steffen , Augat Peter
Published: November 2021

The aim of this review was to determine whether smartphone applications are reliable and valid to measure range of motion (RoM) in lower extremity joints. A literature search was performed up to October 2020 in the databases PubMed and Cochrane Library. Studies that reported reliability or validity of smartphone applications for RoM measurements were included. The study quality was assessed with the QUADAS-2 tool and baseline information, validity and reliability were extracted. Twenty-five studies were included in the review. Eighteen studies examined knee RoM, whereof two apps were analysed as having good to excellent reliability and validity for knee flexion (“DrGoniometer”, “Angle”) and one app showed good results for knee extension (“DrGoniometer”). Eight studies analysed ankle RoM. One of these apps showed good intra-rater reliability and excellent validity for dorsiflexion RoM (“iHandy level”), another app showed excellent reliability and moderate validity for plantarflexion RoM (“Coach’s Eye”). All other apps concerning lower extremity RoM had either insufficient results, lacked study quality or were no longer available. Some apps are reliable and valid to measure RoM in the knee and ankle joint. No app can be recommended for hip RoM measurement without restrictions.
Occurrence of thraustochytrids: the fungoid protists vis-a-vis marine macroalgae (seaweeds) along the coast of Goa, India
Authors: Damare Varada S. , Fernandes Estha T. , Naik Anjita A. , Cardozo Svetlana P. , Borges Vilda , Phuge Pramod
Published: November 2021

Thraustochytrids are fungoid protists ubiquitous in the marine environment and found to be associated with decaying macroalgae. Not much is known about their association with living macroalgae. Hence in the present study, different macroalgal samples were collected from various beaches of Goa to examine the presence of thraustochytrids during a four-year-long study. Brown, red and green algae were found to be substrata of thraustochytrids. Thraustochytrids were isolated on pine pollen baiting from 17 to 58% of the specimens. Thraustochytrids isolated from various macroalgae belonged to the genera Oblongichytrium, Schizochytrium, Ulkenia, and Thraustochytrium. Labyrinthula sp. was also found once on the green alga Bryopsis hypnoides. These were generally found during dry seasons rather than in monsoons. The seasonal occurrence of thraustochytrids was found to be associated with temporal variation in macroalgal diversity. The statistical analysis supported individual or interactive effects of both factors viz, seasons and macroalgal diversity, on the occurrence of thraustochytrids. Thraustochytrids were also isolated from seawater adjoining macroalgae and from estuarine water at all times of the year. Oblongichytrium sp. was isolated from the green alga Ulva compressa and Anjuna seawater samples at the same time, thus indicating that thraustochytrids from seawater could inhabit the macroalgae.
Nonnegative Ricci curvature and escape rate gap
Authors: Pan Jiayin
Published: November 2021

Let M be an open n-manifold of nonnegative Ricci curvature and let

p
∈
M

{p\in M}

. We show that if

(
M
,
p
)

{(M,p)}

has escape rate less than some positive constant

ϵ
⁢

(
n
)

{\epsilon(n)}

, that is, minimal representing geodesic loops of

π
1

⁢

(
M
,
p
)

{\pi_{1}(M,p)}

escape from any bounded balls at a small linear rate with respect to their lengths, then

π
1

⁢

(
M
,
p
)

{\pi_{1}(M,p)}

is virtually abelian. This generalizes the author’s previous work [J. Pan,
On the escape rate of geodesic loops in an open manifold with nonnegative Ricci curvature,
Geom. Topol. 25 2021, 2, 1059–1085], where the zero escape rate is considered.
Learning Green Chemistry and its principles from Nature’s process and development of green procedures mimicking nature
Authors: Ranu Brindaban C. , Adak Laksmikanta , Ghosh Tubai
Published: November 2021

We have highlighted an example of a natural process like photosynthesis to introduce the subject of Green Chemistry. Photosynthesis can be an ideal example to illustrate a green process explaining all the features such as selection of raw materials, solvent, catalyst, energy, etc. for an environment-friendly reaction. From the same reaction, all the principles of Green Chemistry can be derived in a simpler way without the need of memorizing these in a set language. In this article, a few examples of green procedures for the synthesis of useful molecules have been illustrated in light of the knowledge of photosynthesis. The visible-light mediated reactions, organic reactions in water, and solvent-free organic reactions are discussed here for a practical illustration of Green synthesis.
On inclusion properties of discrete Morrey spaces
Authors: Gunawan Hendra , Hakim Denny Ivanal , Idris Mochammad
Published: November 2021

We discuss a necessary condition for inclusion relations of weak type discrete Morrey spaces which can be seen as an extension
of the results in [H. Gunawan, E. Kikianty and C. Schwanke,
Discrete Morrey spaces and their inclusion properties,
Math. Nachr. 291 2018, 8–9, 1283–1296]
and
[D. D. Haroske and L. Skrzypczak,
Morrey sequence spaces: Pitt’s theorem and compact embeddings,
Constr. Approx. 51 2020, 3, 505–535].
We also prove a proper inclusion from weak type discrete Morrey spaces into discrete Morrey spaces.
In addition, we give a necessary condition for this inclusion.
Some connections between the inclusion properties of discrete Morrey spaces and those of Morrey spaces are also discussed.
Fast improvements in functional status after osteopathic manipulative treatment based on myofascial release in patients with moderate or severe fibromyalgia: a retrospective study
Authors: Dal Farra Fulvio , Chiesa Angelo , Risio Roberta Giulia , Vismara Luca , Bergna Andrea
Published: November 2021

Objectives

Fibromyalgia (FM) is a chronic pain syndrome characterized by a large variety of symptoms. Evidence suggests that an alteration of central nervous system processing of pain could be involved. The purpose of this study is to analyze clinical records of patients affected by FM who underwent osteopathic manipulative treatment (OMT), predominantly based on a myofascial release approach (MFR).

Methods

This retrospective study considered records of 21 FM patients with moderate or severe functional impact, who consented to OMT in addition to their usual care. The assessment considered the following measures: FIQ (functional status), SF36 (quality of life), VAS (pain), TSK (kinesiophobia) and PSQI (quality of sleeping). Patients were preliminarily assessed over a 1 month run-in phase, then after 1, 2 and 4 months; a 1 month follow-up was also considered.

Results

After one month, 71% of patients reported a decrease in functional impact and scores remained stable until follow-up (from 69.8 to 52.37, p≤0.001). Overall, after four months, patients improved their quality of life, with a score ranging from 33.47 to 42.6 (p≤0.05). We also observed a reduction of pain (p≤0.05).

Conclusions

A series of OMT sessions based on MFR could play a therapeutic role in improving functional status, pain and quality of life over a period of 4 months.
The American Expeditionary Forces, Communications and the First World War: A Case Study in Inter-Allied Learning
Authors: Hall Brian N.
Published: November 2021

By adopting an inter-organisational learning model to the case study of the American Expeditionary Forces (AEF) Signal Corps during the First World War, this article seeks to position the neglected subject of inter-allied learning within the broader context of the contentious debates surrounding the AEF’s training and military operations. Employing American, British, and French sources, the article examines the experiences of the AEF Signal Corps, an organisation whose role and influence historians of the AEF have largely overlooked and failed to fully appreciate. It argues that although recent interpretations of the AEF’s receptivity to certain British and French methods are generally correct, they underestimate the varied and interconnected nature of the driving influences that shaped the AEF’s learning processes, as well as the collaborative and reciprocal characteristics of inter-allied learning more broadly.
The generation of femtosecond optical vortex beams with megawatt powers directly from a fiber based Mamyshev oscillator
Authors: Lin Di , Feng Yutong , Ren Zhengqi , Richardson David J.
Published: November 2021

Numerous approaches have been developed to generate optical vortex beams carrying orbital angular momentum (OAM) over the past decades, but the direct intracavity generation of such beams with practical output powers in the femtosecond regime still remains a challenge. Here we propose and experimentally demonstrate the efficient generation of high-peak-power femtosecond optical vortex pulses from a Mamyshev oscillator (MO) based on few-mode polarization-maintaining (PM) ytterbium-doped fibers (YDFs). By employing an appropriate intracavity transverse spatial mode selection technique, ultrafast pulses carrying OAM with selectable topological charge of l = ±1 are successfully generated with an average output power of ∼5.72 W at ∼24.35 MHz repetition rate, corresponding to a single pulse energy of ∼235 nJ. The chirped pulses can be compressed to ∼76 fs outside the cavity, leading to a pulse peak power of ∼2.2 MW. To the best of our knowledge, this is by far the highest pulse energy and peak power for optical vortex pulses ever generated directly from a fiber oscillator. This unprecedented level of performance should be of great interest for a variety of applications including materials processing and imaging.
New Soliton Solutions for the Higher-Dimensional Non-Local Ito Equation
Authors: Inc Mustafa , Az-Zo’bi E. A. , Jhangeer Adil , Rezazadeh Hadi , Nasir Ali Muhammad , Kaabar Mohammed K. A.
Published: November 2021

In this article, (2+1)-dimensional Ito equation that models waves motion on shallow water surfaces is analyzed for exact analytic solutions. Two reliable techniques involving the simplest equation and modified simplest equation algorithms are utilized to find exact solutions of the considered equation involving bright solitons, singular periodic solitons, and singular bright solitons. These solutions are also described graphically while taking suitable values of free parameters. The applied algorithms are effective and convenient in handling the solution process for Ito equation that appears in many phenomena.
Classicising ‘Pindar’: Quotation, Canonisation and Early Reception
Authors: Spelman Henry L.
Published: November 2021

This essay examines the earliest quotations of Pindar in order to shed light on the social and historical dynamics through which he first emerged as a classic author. Pindaric quotations from the classical period point to his stratified and multi-faceted reception: as a figure within popular memory, as an emblem of elite culture and as an intellectual ancestor. Indeed, a capacity to appeal to different audiences for different but interconnected reasons was integral to his canonisation. The earliest Pindaric quotations already bespeak his culturally privileged status, which was expressed and perpetuated in different ways over the centuries but which was established as a social fact from remarkably early on. A search for the deepest roots of the classicisation of Pindar, it is argued, has to go all the way back to his poetry.
Effects of an external constant pressure gradient on a steady incompressible laminar flow through a semi-porous annular pipe
Authors: Mbogba Guy Leopold , Ngo Nyobe Elisabeth , Lamara Maurice , Mbono Samba Yves Christian , Pemha Elkana
Published: November 2021

In this paper, we examine a steady laminar flow for an incompressible fluid located in a semi porous annular pipe and subjected to a favorable constant pressure gradient applied between the two borders of the pipe. The inner wall is impermeable and the fluid is sucked or injected at the outer wall at constant and uniform velocity, orthogonally to the wall. The problem under study depends on three parameters: the pipe gap ratio, the dimensionless external pressure gradient, and the Reynolds number defined from the sum of the suction or injection velocity and the maximum Hagen–Poiseuille velocity. The conservation of mass induces the zero-divergence velocity field which allows replacing the steady-flow Navier–Stokes equations with a single equation satisfied by the stream function and called the vorticity equation. Assuming the similarity-solution hypothesis, the problem under consideration is reduced to a fourth-order nonlinear ordinary differential equation with two boundary conditions at each wall. The numerical shooting technique including the Runge–Kutta algorithm and the Newton–Raphson optimization method is applied to obtain the solution for the steady flow. For various values of the dimensionless external pressure gradient, the profiles of the velocity components are found and investigations on the wall shear stress for both walls are performed. The results obtained are discussed and physical understandings for the problem studied are derived.
Optical Manipulations Reveal Strong Reciprocal Inhibition But Limited Recurrent Excitation within Olfactory Bulb Glomeruli
Authors: Zak Joseph D. , Schoppa Nathan E.
Published: November 2021

The local circuitry within olfactory bulb (OB) glomeruli filters, transforms, and facilitates information transfer from olfactory sensory neurons to bulb output neurons. Two key elements of this circuit are glutamatergic tufted cells (TCs) and GABAergic periglomerular (PG) cells, both of which actively shape mitral cell activity and bulb output. A subtype of TCs, the external TCs (eTCs), can synaptically excite PG cells, but there are unresolved questions about other aspects of the glomerular connections, including the extent of connectivity between eTCs and the precise nature of reciprocal interactions between TCs and PG cells. We combined patch-clamp recordings in OB slices and optophysiological tools to investigate local functional connections within glomeruli of mice and rats. When TCs that express cholecystokinin (CCK) were optically suppressed, excitatory inputs to “uniglomerular” PG cells that extend dendrites to one glomerulus were decreased, consistent with TC activation being required for most excitation of these PG cells. However, TC suppression had no effect on EPSCs in eTCs, arguing that TCs make few, if any, direct glutamatergic synaptic connections with eTCs. The absence of synaptic connections among eTCs was also supported by recordings in eTC pairs. Last, we show using similar optical suppression methods that GAD65-expressing PG cells, mainly uniglomerular cells, provide strong inhibition in eTCs. Our results imply that the local network of CCK-expressing TCs form potent reciprocal chemical synaptic connections with GAD65-expressing uniglomerular PG cells but not eTCs. This configuration favors local inhibition over recurrent excitation within a glomerulus, limiting its output.
Through Growth to Achievement: Report of the Review to Achieve Educational Excellence in Australian Schools - prikaz knjige
Authors: Madunić Marijan
Published: November 2021

Autori: Gonski, D., Arcus, T. et al.
Izdavač: Department of Education and Training,Commonwealth of Australia. Canberra (2018)
Application of Modern Development Tools in Increasing the Competence of the Staff
Authors: Verbovska Lesya , Haliuk Iryna
Published: November 2021

The article substantiates the main components of improving staff competencies in the face of change. It is determined that taking into account and combining "hard skills" and "soft skills" skills allow you to use the acquired knowledge to perform specific tasks in the workplace in a particular professional activity. Modern and traditional models, techniques and tools of personnel management are presented, according to which it is possible to clearly assess the difference in approaches to managing the competence of employees in the conditions of change. Based on the analysis of world practice, a list of methods is presented: discussions, brainstorming, Oxford debates, Case - Study, business and role - playing games, workshops, communication and management training, which are used to develop skills and abilities of employees. These methods allow expanding the educational opportunities of established forms of classes (lectures, seminars). The relationship between the acquisition of new and improvement of existing staff development competencies on the basis of training and coaching is shown. The proposed methods of acquiring competencies allow you to choose those competencies and methods of acquiring them that correspond to the individual characteristics of organizations. It is proved that the acquisition of competencies by staff allows identifying new competencies in employees, to form the need to use modern analytical and behavioral skills, providing greater opportunities for management skills and flexibility, dialectical thinking, ability to make creative decisions in unusual situations. It is substantiated that the combination of the SMART method in the acquisition of competencies significantly expands the possibilities of short-term learning, through the application of the concept of "lifelong learning". Different definitions of the essence of "competence" are analyzed, which allows emphasizing that when choosing different forms of education, in particular, trainings, different types of training it is necessary to use / apply modern methods and techniques. It has been proven that incompetent non-use by a staff of their knowledge, skills, experience and skills often leads to reduced profits and inefficient use of their potential.
Effect of beeswax impregnation on the dimensional stability, surface properties, and thermal characteristics of wood
Authors: Li Yajing , Qian Jing , Wang Zhengyu , Qu Lijie , Gao Jingjing , Yi Songlin , He Zhengbin
Published: November 2021

Wood is both renewable and natural, which are qualities that make it both environmentally sustainable and useful in terms of development. However, wood also has certain inherent defects, such as its tendencies to shrink when dried and rot when wet. These defects restrict the use and popularity of lumber as a building material. In this paper, the effects of beeswax impregnation on the dimensional stability of wood were studied. Pieces of African padauk (Pterocarpus soyauxii) (20 mm × 20 mm × 20 mm) were used as the test material. The wood was treated at a temperature of 120 °C for periods of 3 h or 6 h. Measurements of weight gain rate, size expansion coefficient, and contact angle of the control samples were compared with samples treated with beeswax for 3 h and 6 h to explain macroscopic changes in wood. The effects of beeswax impregnation were compared using scanning electron microscopy, thermal weight loss characteristic analysis, and functional group analysis. The results indicated that, to some extent, beeswax impregnation improved the dimensional stability of wood and remarkably enhanced its surface hydrophobicity.
Low viscosity melamine urea formaldehyde resin as a bulking agent in reducing formaldehyde emission of treated wood
Authors: Mohd Ali Rabiatol Adawiah , Ashaari Zaidon , Lee Seng Hua , Anwar Uyup Mohd Khairun , Bakar Edi Suhaimi , Farah Azmi Nur Izreen
Published: November 2021

Melamine urea formaldehyde (MUF) resin impregnation followed by heat compression is a prominent method in improving mechanical properties and dimensional stability of wood. In addition, melamine is reactive to formaldehyde, and therefore able to reduce the free formaldehyde of the treated wood. This study aimed to produce compressed sesenduk (Endospermum diadenum) wood with low formaldehyde emission using low viscosity MUF resin. The effects of treatment efficiency on the physical and mechanical properties of the wood products were evaluated. The experimental design included impregnation of sesenduk strips with 20% and 30% MUF at five different formulations. Then, it was pre-cured at a temperature of 70 °C for 90 min, followed by hot compression at 140 °C with the compression ratio of 80%. The optimum treatment combination was determined through treatability, mechanical strength, dimensional stability, and formaldehyde emission. It was also compared to other treatments, including impregnation without further compression using formulated MUF and commercial MUF. The results revealed that F4 MUF, which consisted of 30% melamine, 50% formaldehyde, and 20% urea, was the optimal MUF formulation that resulted in low formaldehyde emission and acceptable physical and mechanical properties.
Glifosatui jautraus molekulinių įspaudų polipirolo matricoje jutiklio sintezė ir tyrimas
Authors:   , Balčiūnas Domas
Published: November 2021

Synthesis and investigation of glyphosate sensitive molecular imprints in a polypyrrole matrix
Study of Angular Distribution and KNO Scaling in the Collisions of 28Si with Emulsion Nuclei at 14.6A GeV
Authors: Ahmad M. Ayaz , Ahmad Shafiq
Published: November 2021

An attempt has been made to study the angular characteristics of heavy ion collision at high energy in the interactions of 28Si nuclei using with nuclear emulsion. The KNO scaling behavior in terms of the multiplicity distribution has been studied. A simplest universal function has been used to represent the present experimental data.
Поляризація та піроелектричний коефіцієнт в околі антиферодисторсійних доменних границь (на прикладі SrTiО3)
Authors: Яковенко Я.В. , Єлісєєв Є.А. , Свєчніков С.В. , Морозовська Г.М.
Published: November 2021

Із використанням теорії Ландау–Гінзбурга–Девоншира проведено аналітичні та чисельні дослідження просторових характеристик ітемпературних залежностей локальної поляризації і піроелектричного коефіцієнта в околі антиферодисторсійних фазових границь уSrTiO3 при температурах, нижчих за температуру антиферодисторcійного структурного фазового переходу (≈105 K). Причиною поляризації пристіночної зони вважається флексоелектричний ефект і ротаційна стрикція (флексо-ротаційний ефект).
Structural and Photoluminescence Properties of ZnO Nanowires
Authors: Rudko G.Yu. , Dubrovin I.V. , Klimovskaya A.I. , Gule E.G. , Lytvyn P.M. , Lytvyn Yu.M. , Turanska S.P.
Published: November 2021

Arrays of ZnO nanowires are grown by the vapor-liquid-solid method on a silicon substrate. The results of XRD, SEM, and AFM studies show that the diameters of nanowires vary in the range (50–300) nm, and their length is up to 40 μm. The wires exhibit bright photoluminescence: the band corresponding to the near band edge region and one or two (depending on the growth conditions) defect-related bands. The intensity ratio of the bands reflects the non-stoichiometry of the material and can be controlled by the zinc evaporation temperature and the temperature in the growing zone.
Hearing Screening
Authors: Adam Henry
Published: November 2021

Key Points

The goal of screening is to identify children with hearing loss as early as possible to prevent language and speech impairment and its detriment to educational and social development. Routine screening for newborns is justified, given how common congenital hearing loss is. All children should be tested in the first month after birth, and any child identified as having hearing loss should be receiving intervention before 6 months of age. Routine screening should continue throughout childhood and adolescence to identify patients with acquired or progressive hearing loss.
Abdominal Pain
Authors: Samras Nathan
Published: November 2021

Key Points

Functional abdominal pain disorders are the most common causes of recurrent abdominal pain in pediatrics.The Rome IV criteria in 2016 for functional abdominal pain have eliminated the requirement of "no evidence for organic disease"; it now is defined as > 2 months of pain, ≥ 4 times per month, and after appropriate medical evaluation the symptoms cannot be attributed to another medical condition.History and physical examination are the only evaluations required most of the time in a child with abdominal pain.
Amenorrhea
Authors: Zubairi Hijab
Published: November 2021

Key Points

Last menstrual period should be considered a vital sign and abnormalities should be investigated.Clinicians should educate girls and their caregivers about what to expect from the first menstrual period and the variation in cycles thereafter.Amenorrhea is defined as the absence of menses and can be primary or secondary.Functional hypothalamic amenorrhea is associated with stress, weight change, chronic illness, physical activity, and eating disorders. Prolonged amenorrhea can lead to low bone density caused by inadequate estrogen production.
Facial Dysmorphism
Authors: Watt Mridula
Published: November 2021

Key Points

Facial dysmorphism can be caused by malformations or deformations.Evaluation should includeA detailed pregnancy and family history.A detailed physical examination.Laboratory studies based on suspected etiology, history, and physical examination. A genetic consultation may be requested to select proper studies to be ordered.The most important task initially is to determine whether features areConsistent with the individual’s genetic backgroundAn abnormal phenotypeHealth care professionals should be sensitive about the terminology used to describe the patient and should describe the abnormal features as clearly and concisely as possible.Once an abnormal phenotype is suspected, a decision has to be made whether the patient or family will benefit from a referral.
Fatigue and Weakness
Authors: Adam Henry M.
Published: November 2021

Key Points

Fatigue and weakness can be vague terms in lay parlance, or difficult to distinguish from each other. Fatigue may be the normal result of physical or mental energy expenditure, or a symptom of organic or psychological pathology. True weakness in a child of any age demands further investigation. In infants, the concern of weakness most often reflects hypotonia.
Fever of Unknown Origin
Authors: Adam Henry M.
Published: November 2021

Key Points

Children with fever of unknown origin generally do well, even if the fever persists beyond 2 weeks. Among children, most cases of fever of unknown origin are caused by infections that are usually self-limited or treatable. Thorough history and examination are the most important tools of evaluation. Given how common “fever phobia” is, careful explanation and reassurance are key to management.
Headache
Authors: Adam Henry M.
Published: November 2021

Key Points

Most headaches in children, in the absence of neurologic or systemic findings, require only symptomatic relief with ibuprofen or acetaminophen. Neuroimaging is indicated only with abnormal neurologic features, systemic symptoms, an abrupt change in pattern, or with chronic daily headaches. With recurrent headaches the 1st step in management is promoting healthy lifestyle habits—nutrition, sleep, exercise, hydration, etc. With migraine, DON’T WAIT—medication works best the earlier it is given. Ibuprofen is the initial treatment of choice. If needed, triptans are safe and can be effective.
Heart Murmurs
Authors: Kamat Deepak M.
Published: November 2021

Key Points

A Heart murmur results from turbulent blood flow. A complete history and physical examination are most important for evaluating a cardiac murmur. The intensity of a murmur does not necessarily reflect the severity of abnormality. Innocent murmurs are systolic, less than grade 3 in intensity, and louden when the patient moves from an upright position to a supine position. Electrocardiography and echocardiography are usually performed to define the cause of a pathological murmur.
Loss of Appetite
Authors: Adam Henry M.
Published: November 2021

Key Points

Transient loss of appetite often accompanies acute illness and self-resolves. Prolonged loss of appetite, particularly when associated with poor weight gain or weight loss, may signify a serious illness. Serial assessments of weight and intake are the cornerstone of evaluation. Evaluation must accurately assess nutritional status, both caloric intake and caloric output.
Polyuria
Authors: Adam Henry M.
Published: November 2021

Key Points

Polyuria can result from too much fluid, too much solute, or too little arginine vasopressin. When diabetes insipidus (DI) is diagnosed, its cause must be determined. With central DI, other pituitary functions must be evaluated. A water deprivation test is the criterion standard for distinguishing among central DI, nephrogenic DI, and polydipsia.
Proteinuria
Authors: Adam Henry M.
Published: November 2021

Key Points

Proteinuria on routine screening of children without symptoms most often is either orthostatic or transient, not pathological. Orthostatic (postural) proteinuria is most common. Transient proteinuria can result from stressors such as fever or vigorous exercise. Persistent (fixed) proteinuria can be asymptomatic, signaling underlying glomerular or tubular renal disease.
Puberty: Normal and Abnormal
Authors: Adam Henry
Published: November 2021

Key Points

The trend toward earlier onset of puberty in girls may warrant lowering the cutoff age for precocious puberty to 7 years in white girls and 6 years in Black girls.Precocious puberty is more common in girls, and delayed puberty, in boys.Isolated premature thelarche and isolated premature adrenarche require no treatment other than careful follow-up to ensure they do not represent the early stage of complete sexual precocity.Gynecomastia occurs in about 40% of healthy boys, most often self-resolving within 2 years and requiring only reassurance.
Tics
Authors: Adam Henry
Published: November 2021

Key Points

Most tics in children are mild, are short lived, and do not require treatment.The clinical spectrum of tics extends beyond the most common transient, isolated tics to more persistent, complex tics that interfere with daily functioning and to Tourette syndrome, which can warrant treatment.Tics can be associated with anxiety disorders, attention-deficit/hyperactivity disorder, and obsessive-compulsive disorder, which can themselves require treatment.Many children with tics benefit from collaboration with their school, making teachers aware to provide needed accommodations and to deal with peer stigmatization.
Allergic Rhinitis
Authors: Ma Janet
Published: November 2021

Key Points

Allergic rhinitis is a common atopic upper airway inflammatory disease characterized by congestion, sneezing, and pruritus.Allergen skin testing is the best diagnostic test for allergic rhinitis.Intranasal steroids and antihistamines are mainstay treatments of allergic rhinitis.Allergen immunotherapy should be considered if pharmacological treatments fail.