bluuebunny/crossref_metadata_2025 huggingface dataset:
Poticanje dječje kreativnosti u predškolskim ustanovama
Authors: Đuranović Marina , Klasnić Irena , Matešić Irena
Published: December 2020

Uz obitelj, predškolske ustanove predstavljaju najvažniji čimbenik rasta i razvoja djeteta predškolske dobi. To su mjesta dječjega življenja, razvoja, učenja i igre. Kurikulum predškolskih ustanova mora biti fleksibilan, otvoren, prilagođen dječjim potrebama i mogućnostima. Kreativnost mora biti temelj predškolskoga kurikuluma. Dječja se kreativnost može poticati i razvijati kroz sve aktivnosti u predškolskim ustanovama: igru, glazbene, likovne, dramske, kineziološke i brojne druge aktivnosti. U poticanju dječje kreativnosti važnu ulogu imaju odgojitelji, a da bi ju kod djece uspješno razvijali moraju biti svjesni njezine važnosti te i sami trebaju raditi u okruženju koje potiče njihovu kreativnost. Cilj je ovoga rada osvijestiti važnost poticanja i razvoja dječje kreativnosti i stvaralaštva još od najranije dječje dobi kao jedne od osam ključnih kompetencija za cjeloživotno obrazovanje.
Šah kao izvannastavna aktivnost
Authors: Martinović Saša , Markić Ivan
Published: December 2020

Izvannastavne aktivnosti kao različiti organizacijski oblici okupljanja učenika u slobodno izvannastavno vrijeme u školi imaju pretežito kulturnoumjetničko, športsko, tehničko, rekreacijsko ili znanstveno obilježje (Cindrić, 1992). Kroz njih učenici zadovoljavaju svoje potrebe i razvijaju kulturu korištenja slobodnog vremena. Zahvaljujući svom pedagoškom potencijalu, šah se sve više implementira u kurikulume škola i poučava na svim razinama obrazovanja. Ovaj trend počinje pratiti i Hrvatska, u kojoj se šah u mnogo škola provodi kao izvannastavna i/ili izvanškolska aktivnost. U ovome radu prikazat će se i analizirati prednosti koje bavljenje šahom ima za učenike osnovnih škola te će se empirijskim istraživanjam utvrditi pojavnost izvannastavne aktivnosti šaha u školama Grada Zagreba. Temeljem rezultata kvalitativnog istraživanja prikazat će se stavovi voditelja šaha kao izvannastavne aktivnosti o prednostima njegove implementacije, načinima utvrđivanja interesa te o načinima rada voditelja i polaznika/učenika.
Flexural Behavior of Sandwich Composite Made of JFRP Honeycomb as Core and GFRP as Skin
Authors: Islam Md. Rakibul , Arifuzzaman Md , Neon Asif Karim , Duzzaman Md. Shahe , Islam Md. Rafiul
Published: December 2020

The increasing demand of lightweight, strong and sustainable materials in aerospace, automobile and marine sectors is leading towards the development of new materials and structures. The sandwich composite is one of them which is well-known for their high strength to weight ratio and the fiber based sandwich structures with cellular core show comparatively good mechanical, acoustic, thermal and energy absorption properties than metallic cellular structure. The purpose of this work is to fabricate a sandwich structure with jute fiber reinforced polymer composite (JFRP) as core and glass fiber reinforced polymer composite (GFRP) as face sheet and to investigate bending properties of the fabricated structures for varying face sheet thicknesses. Skin and core honeycomb strips of the sandwich composites were manufactured using hand layup method and steel mold was used to obtain honeycomb shape. Flexural test results show that face sheet thickness has significant effect on the flexural behavior such as peak load, flexural strength and energy absorption. The failure mechanism during bending tests were also identified which would serve as a basis for future improvement of manufactured composites. The delamination at the interface between the core and the face sheet was the first catastrophic failure during bending. The presented sandwich structures are able to carry a significant amount of load even after failure.
New Determination of Fundamental Properties of Palomar 5 Using Deep DESI Imaging Data
Authors: Xu Xin , Zou Hu , Zhou Xu , Nie Jundan , Zhou Zhimin , Ma Jun , Zhang Tianmeng , Wang Jiali , Xue Suijian
Published: December 2020

The legacy imaging surveys for the Dark Energy Spectroscopic Instrument project provides multiple-color photometric data, which are about 2 mag deeper than those from the SDSS. In this study, we redetermine the fundamental properties for an old halo globular cluster of Palomar 5 based on these new imaging data, including structure parameters, stellar population parameters, and luminosity and mass functions. These characteristics, together with its tidal tails, are key for dynamical studies of the cluster and constraining the mass model of the Milky Way. By fitting the King model to the radial surface density profile of Palomar 5, we derive the core radius of

, tidal radius of

, and concentration parameter of c = 0.78 ± 0.04. We apply a Bayesian analysis method to derive the stellar population properties and get an age of 11.508 ± 0.027 Gyr, metallicity of [Fe/H]  =   −1.798 ± 0.014, reddening of E(B − V) = 0.0552 ± 0.0005, and distance modulus of

. The main-sequence luminosity and mass functions for both the cluster center and tidal tails are investigated. The luminosity and mass functions at different distances from the cluster center suggest that there is obvious spatial mass segregation. Many faint low-mass stars have been evaporated at the cluster center, and the tidal tails are enhanced by low-mass stars. Both the concentration and relaxation times suggest that Palomar 5 is a totally relaxed system.
Deciphering the Origin of the GeV–TeV Gamma-Ray Emission from SS 433
Authors: Kimura Shigeo S. , Murase Kohta , Mészáros Peter
Published: December 2020

We investigate hadronic and leptonic scenarios for the GeV–TeV gamma-ray emission from jets of the microquasar SS 433. The emission region of the TeV photons coincides with the X-ray knots, where electrons are efficiently accelerated. On the other hand, the optical high-density filaments are also located close to the X-ray knots, which may support a hadronic scenario. We calculate multiwavelength photon spectra of the extended jet region by solving the transport equations for the electrons and protons. We find that both hadronic and leptonic models can account for the observational data, including the latest Fermi Large Area Telescope result. The hadronic scenarios predict higher-energy photons than the leptonic scenarios, and future observations such as with the Cherenkov Telescope Array, the Large High-Altitude Air Shower Observatory, and the Southern Wide-field Gamma-ray Observatory may distinguish between these scenarios and unravel the emission mechanism of GeV–TeV gamma rays. Based on our hadronic scenario, the analogy between microquasars and radio galaxies implies that the X-ray knot region of the radio-galaxy jets may accelerate heavy nuclei up to ultrahigh energies.
Lifting the Veil on Quark Matter in Compact Stars with Core g-mode Oscillations
Authors: Wei Wei , Salinas Marc , Klähn Thomas , Jaikumar Prashanth , Barry Megan
Published: December 2020

Compact stars containing quark matter may masquerade as neutron stars in the range of measured mass and radius, making it difficult to draw firm conclusions on the phase of matter inside the star. The sensitivity of core g-mode oscillations to the presence of a mixed phase may alleviate this difficulty. In hybrid stars that admit quark matter in a mixed phase, the g-mode frequency rises sharply due to a marked decrease in the equilibrium sound speed. Resonant excitation of g-modes can leave an imprint in the waveform of coalescing binary compact stars. We present analytic and numeric results to assess the sensitivity displayed by g-mode oscillations to quark matter in a homogeneous or mixed phase and also compute relevant damping times in quark matter due to viscosity.
Pair Plasma in Super-QED Magnetic Fields and the Hard X-Ray/Optical Emission of Magnetars
Authors: Thompson Christopher , Kostenko Alexander
Published: December 2020

The photon spectrum emitted by a transrelativistic pair plasma is calculated in the presence of an ultrastrong magnetic field, and is shown to bear a remarkable resemblance to the rising hard X-ray spectra of quiescent magnetars. This emission is powered by pair annihilation which, in contrast with a weakly magnetized pair plasma, shows an extended low-frequency tail similar to bremsstrahlung. Cross sections for electron–positron annihilation/scattering, two-photon pair creation, and photon-e
± scattering are adopted from our earlier ab initio quantum electrodynamic calculations in the regime

 ≫ B ≫ B
Q. Careful attention is given to the u-channel scattering resonance. Magnetospheric arcades anchored in zones of intense crustal shear and reaching about twice the magnetar radius are identified as the sites of the persistent hard X-ray emission. We deduce a novel and stable configuration for the magnetospheric circuit, with a high plasma density sustained by ohmic heating and in situ pair creation. Pairs are sourced nonlocally by photon collisions in zones with weak currents, such as the polar cap. Annihilation bremsstrahlung extends to the optical–IR band, where the plasma cutoff is located. The upper magnetar atmosphere experiences strong current-driven growth of ion-acoustic turbulence, which may limit positron diffusion. Coherent optical–IR emission is bounded near the observed flux by induced scattering. This model accommodates the rapid X-ray brightening of an activating magnetar, concentrated thermal hotspots, and the subdominant thermal X-ray emission of some active magnetars. Current injection is ascribed to continuous magnetic braiding, as seen in the global yielding calculations of Thompson, Yang, and Ortiz.
ALMA View of the Infalling Envelope around a Massive Protostar in S255IR SMA1
Authors: Liu Sheng-Yuan , Su Yu-Nung , Zinchenko Igor , Wang Kuo-Song , Meyer Dominique M.-A. , Wang Yuan , Hsieh I-Ta
Published: December 2020

The massive young stellar object S255IR NIRS3 embedded in the star-forming core SMA1 has been recently observed with a luminosity burst, which is conjectured as a disk-mediated variable accretion event. In this context, it is imperative to characterize the gas properties around the massive young stellar object. With this in mind, we carried out high angular resolution observations with the Atacama Large Millimeter/submillimeter Array and imaged the 900 μm dust continuum and the CH3CN J = 19−18 K = 0−10 transitions of S255IR SMA1. The integrated CH3CN emission exhibits an elongated feature with an extent of 1800 au in the northwest–southeast direction at a position angle of 165°, which is nearly perpendicular to the bipolar outflow. We confirm the presence of dense (a few

cm−3) and hot (∼400 K) gas immediately surrounding the central protostar. The CH3CN emission features a velocity gradient along the elongated ridge, and by modeling the gas kinematics based on features in the position–velocity diagram, we infer that the gas is best described by a flattened rotating infalling envelope (or pseudo-disk). A mass infall rate of a few × 10−4
M
⊙ yr−1 is derived. If there exists a putative Keplerian disk directly involved in the mass accretion onto the star and jet/outflow launching, it is likely smaller than 125 au and unresolved by our observations. We show qualitative resemblances between the gas properties (such as density and kinematics) in 255IR SMA1 inferred from our observations and those in a numerical simulation particularly tailored for studying the burst mode of massive star formation.
Investigating Orientation Effects Considering Angular Resolution for a Sample of Radio-loud Quasars Using VLA Observations
Authors: Maithil Jaya , Runnoe Jessie C. , Brotherton Michael S. , Wardle John F. , Wills Beverley J. , DiPompeo Michael , De Breuck Carlos
Published: December 2020

Radio core dominance measurements, an indicator of jet orientation, sometimes rely on core flux density measurements from large-area surveys like Faint Images of the Radio Sky at Twenty cm (FIRST) that have an angular resolution of only 5″. Such low-resolution surveys often fail to resolve cores from the extended emission, resulting in an erroneous measurement. We focus on investigating this resolution effect for a sample of 119 radio-loud quasars. We obtained continuum observations from NSF’s Karl G. Jansky Very Large Array (VLA) at 10 GHz in A configuration with a 0.″2 resolution. Our measurements show that at FIRST spatial resolution, core flux measurements are indeed systematically high even after considering the core variability. For a handful of quasars, 10 GHz images reveal extended features, whereas the FIRST image shows a point source. We found that the resolution effect is more prominent for quasars with smaller angular sizes. We further computed two radio core dominance parameters R and R
5100 for use in statistical orientation investigations with this sample. We also present the spectral energy distributions between 74 MHz and 1.4 GHz, which we used to measure the spectral index of the extended emission of these quasars. Our results empirically confirm that determination of radio core dominance requires high spatial resolution data. We highlight the practical issues associated with the choice of frequency and resolution in the measurement of core and extended flux densities.
Étangs et marécages dans les aires naturelles protégées urbaines : le cas du zakaznik du mont des Moineaux à Moscou
Authors: Touchart Laurent
Published: December 2020

Selon l’IUCN, les aires protégées urbaines développent en général les aptitudes relationnelles des citadins, construisent un sentiment d’appartenance bénéfique à la collectivité et sensibilisent la jeunesse à l’environnement. Riche de 438 étangs et de 120 aires protégées, la ville de Moscou est un cas d’étude exemplaire pour tenter de comprendre si les plans d’eau peuvent apporter un supplément d’identité et d’intérêt éducatif aux aires protégées urbaines. La réserve partielle (zakaznik) de nature du mont des Moineaux compte quatre étangs. Le document officiel de classement les considère uniquement comme un support aux espèces végétales et animales et réduit l’hydrographie aux seuls éléments censés être naturels, les sources et les ruisseaux. Nous tentons de montrer l’intérêt qu’il y aurait à enrichir l’actuelle vision naturaliste et biocentrée par une prise en compte de l’ensemble du paysage et une valorisation des aspects culturels, dont les étangs pourraient être le fer de lance. Grâce à la transformation au fil des siècles des marécages naturels en étangs artificiels, l’effet des contrepentes modelées par les glissements de terrain est devenu lisible. Discrète ailleurs dans la réserve, l’eau est révélée par les étangs. Le croisement de leur histoire monastique et nobiliaire avec les perspectives panoramiques dévoilées par les belvédères aménagés qui les surmontent permet de proposer une thématisation des différentes parties du zakaznik : (i) la nature sélectionnée, la perspective de la jeunesse et l’étang récréatif, (ii) la nature des panneaux pédagogiques, la perspective des monastères et la chaîne des étangs de Saint-André, (iii) la nature jardinée, la perspective des sciences et l’étang princier. Ce dernier sous-ensemble conduirait, en sortant du périmètre de la réserve, à un cinquième étang, dont l’écrin serait celui de la nature plantée de l’arboretum de l’université.
La variation toponymique dans l'oraliture comme pratique infrapolitique : études de cas à Uchon et Paris
Authors: Bing Jean-Baptiste
Published: December 2020

Cet article s'attache à montrer comment l'oraliture, en pérennisant l'actualité de variation toponymique, constitue une arme de résistance et d'encapacitation relevant de l'« infrapolitique ». Pour ce faire, elle s'attache à deux cas d'étude : la microtoponymie appliquée au quotidien par les habitants du village d'Uchon (Saône-et-Loire) et transmise via des récits lors de parcours commentés ; l'odonymie de deux rues de Paris, transmise à travers deux récits. Après avoir présenté les cas d'étude et le corpus, la première partie pose quelques considérations épistémologiques et méthodologiques sur ceux-ci, la manière de les traiter et les limites des résultats qui peuvent en être tirés. Puis la deuxième partie montre comment contes, légendes et récits oraux permettent d'entretenir un écart à la norme et à la normalisation et d'enrichir le réel quotidien. Enfin la troisième s'attarde sur le pouvoir d'encapacitation que représente cette oraliture pour un groupe subalterne lors d'un rapport de force. L'article conclue sur l'importance de la variante dans l'oraliture comme interstice où peuvent s'imaginer et s'incarner des résistances infrapolitiques par-delà les différences de contexte entre une métropole et un village de l'hyperruralité.
La mémoire de la Grande Guerre à travers les odonymes en France
Authors: Millon Clément
Published: December 2020

La mémoire vivante du passé peut être mesurée par la gestion des odonymes (nom des routes et places). La présence de la Grande Guerre en France par l’étude de l’actuel fichier FANTOIR est significative. Mais le nombre d’odonymes qui commémore la seconde guerre mondiale, ou d’autres conflits, est plus important. Il faut donc s’interroger sur les causes de ce fait.
Descentralização do jogador: Minecraft e a dimensão sensorial da comunicação jogador-jogo
Authors: Mussa Ivan , Pereira Vinicius Andrade
Published: December 2020

Para que a indústria dos videogames funcione e se expanda, necessita de métodos produtivos e criativos que almejam prever e prescrever as ações e comportamentos de seus jogadores. Nesse sentido, desenvolve formas de centralizar o jogador como critério-chave de todas as decisões que guiam a construção de um mundo de jogo. Em 2009, no entanto, Minecraft surge como um rompimento radical com as diretrizes da indústria, invertendo em todos os aspectos a noção de que o jogador é o centro do mundo de jogo. A proposta deste trabalho é compreender essa inversão, que chamaremos de descentralização dos jogadores. Defendemos que sua emergência expõe a necessidade de repensar epistemologicamente a conexão entre jogo e jogador. Tomamos esta tarefa como objetivo deste trabalho, tratando-a em três etapas: primeiro, definindo o fenômeno da descentralização como um tipo de tessitura conectiva entre jogador e jogo. Depois, aprofundando a dimensão material da experiência de atuação em um mundo de jogo. Por fim, radicalizando a noção de descentralização, identificando-a como força potencial em qualquer jogo.Palavras-chave: Videogames. Minecraft. Mundos de jogo. Sensorialidade.
“Eu não sou a mulher vermelha. Pode tirar suas próprias calças”: sentidos sobre gênero e sexualidade em disputa em memes de Game of Thrones
Authors: Viero Kolinski Machado Mendonça Felipe
Published: December 2020

Nesta pesquisa, a partir de um acontecimento específico de Game of Thrones (relação sexual entre as personagens Arya Stark e Gendry Baratheon), buscamos, tendo em vista os memes compartilhados por fãs em redes sociais digitais, perceber quais sentidos são então mobilizados acerca de questões de gênero e de sexualidade. Discutimos as noções de acontecimento, ciberacontecimento, meme e gênero e sexualidade. A análise de construção de sentidos em redes digitais é a inspiração metodológica e os estudos feministas/estudos de gênero consistem nos referenciais teóricos e políticos acionados. Em relação às conclusões, foi possível compreender como a elaboração de lugares permitidos e também interditados à personagem Arya passa pelos lugares permitidos e interditados às mulheres. Para além da ficção e para além do caráter humorístico dos memes, observamos uma discussão que é, também, de caráter político.Palavras-chave: Game of Thrones. Meme. Gênero.
Comparing the Braden and Jackson/Cubbin Pressure Injury Risk Scales in Trauma-Surgery ICU Patients
Authors: Higgins Jacob , Casey Sherri , Taylor Erin , Wilson Riley , Halcomb Paula
Published: December 2020

Background

The occurrence of pressure injury in the critical care environment has multiple risk factors. Prevention requires reliable assessment tools to help predict injury risk. The Braden scale, a commonly used risk assessment tool, has been shown to have poor predictive properties in critical care patients. The Jackson/Cubbin scale was developed specifically for pressure injury risk stratification in critically ill patients and has demonstrated acceptable predictive properties in the general critical care population but has not been examined in critically ill trauma-surgical patients.

Objective

To compare the predictive properties of the Braden and Jackson/Cubbin scales in a trauma-surgical critical care population.

Methods

A retrospective medical records review was performed to evaluate the clinical characteristics of 366 trauma-surgical critical care patients. Additionally, the negative predictive value, positive predictive value, sensitivity, specificity, and receiver operating characteristic curve with area under the curve of the Braden and Jackson/Cubbin scales were determined.

Results

The sample consisted of primarily middle-aged (mean [SD], 56 [19] years) men (64%) admitted after trauma (71%). The participants who developed pressure injuries were older, more often required vasopressors and mechanical ventilation, and were less mobile. Predictive properties for the Braden and Jackson/Cubbin scales, respectively, were as follows: negative predictive value, 78% versus 87%; positive predictive value, 53% versus 66%; sensitivity, 17% versus 54%; specificity, 95% versus 92%; and area under the curve, 0.710 versus 0.793.

Conclusion

The Jackson/Cubbin scale demonstrated superior predictive properties and discrimination compared with the Braden scale for pressure injury risk prediction in critically ill trauma-surgical patients.
Protective Antibody Levels Against Hepatitis B among Serodiagnosed Syphilis Cases
Authors: Kashyap Bineeta , Saha Rituparna , Singh Narendra Pal , Singha Krishna
Published: December 2020

Background:

The intersecting routes of transmission in conjunction with hepatocyte injury caused by hepatotropic viruses and Treponema pallidum independently add to the importance of hepatitis B virus (HBV) seroprotection in syphilis. Furthermore, the deficit in the clinical suspicion and stigma associated could at least be partially responsible for the underdiagnosis of syphilitic hepatitis, which is caused by the effect of T. pallidum on hepatocytes. Materials
and

Methods:

Sera from eighty patients, serologically confirmed for syphilis by conventional algorithm, were included in the study. Levels of anti-HBs antibody were determined by ELISA for all serologically confirmed cases of syphilis.

Results:

Majority of the patients who tested positive for syphilis as per conventional algorithm, hailed from antiretroviral therapy (ART) and sexually transmitted infection (STI) clinics. Levels of anti-HBs antibody of all the patients were found to be below 10 mIU/ml.

Conclusion:

The absence of protective levels of anti-HBs antibody among all the patients in the study group, despite the inclusion of HBV vaccination in the national immunization program and proximity to tertiary health-care facilities, underscores the pressing need to reinforce and revise our approach to immunization. High-risk groups, such as ART and STI clinic attendees, solicit further enforcement of accelerated immunization strategies in excess to existing dosing schedules.
Tourism and Southeast Asian rural livelihood trajectories: the case of a large work integration social enterprise in Siem Reap, Cambodia
Authors: Biddulph Robin
Published: December 2020

Livelihoods in rural Southeast Asia are widely divergent, but often characterized by a reduced role for agriculture and local natural resources. The diverse components of an expanding tourism industry can provide opportunities for rural households seeking more diversified livelihood strategies. Artisans Angkor is a tourism social enterprise employing over 800 artisans in rural Cambodia. This study analysed the benefits of formal employment with Artisans Angkor by studying one village where six long-term Artisans Angkor employees lived, and comparing their situations with those of their direct peers. While income levels were often similar, significant benefits related to safe working conditions, social insurance and above all enabling young households to live together at home. This study provides insights into how qualitative research can contribute contextualized understandings of tourism employment’s livelihood effects.
In search of ‘Other’ voices: on the need for non-Western (auto)ethnographic/(auto)biographical accounts of tourist culture
Authors: Tripathi Animesh , Hayes Stuart , Tucker Hazel
Published: December 2020

With an increase in tourists originating from Asia, the geographies of tourism have changed considerably in recent decades. Arguably, however, tourism scholarship remains largely Western-centric. In this research note, we focus on one particular area of tourism scholarship where Western-centrism may be especially problematic: tourist culture. As part of this, we draw on a case study of ‘lifestyle travel’ to illustrate the need for more inclusive, diverse and non-Western-centric (auto)ethnographic/(auto)biographical studies in tourist culture scholarship. In so doing, we argue that such studies may be especially useful for capturing the stories of ‘Others’, thus helping to broaden our knowledge base in light of tourism’s shifting geographies.
Reducing Catheter-Associated Urinary Tract Infection Project
Authors:   , Agado Beatriz
Published: December 2020

Practice Problem: Catheter-associated urinary tract infections (CAUTIs) are prevalent and responsible for an estimated 13,000 deaths annually in the United States. Reported cases of CAUTIs remain disproportionately high at a rehabilitation center located in South Texas. PICOT: This evidence-based project answered the following question: In rehabilitation patients, what is the effect of a nurse-driven protocol (NDP) CAUTI bundle on the number of indwelling urinary catheter-related infections, compared to the current practice, over a 12-week time period? Evidence: Twenty high-quality studies that met the inclusion and exclusion criteria recommended using an NDP CAUTI bundle, education, and champions to round the unit to decrease the number of catheter-associated urinary tract infections. Intervention: The evidence-based intervention utilized the implementation of an NDP CAUTI bundle. The intervention bundle included catheter indication, hand hygiene, an insertion technique, maintenance, ongoing assessment to evaluate catheter need, and documentation. Outcome: The evaluation of the outcome measures demonstrated that the CAUTI rate decreased from six incidences in 2019 to two from January to May 2020. There were zero incidences during the project implementation from June to August 2020, and the number of catheter days decreased from 59% at baseline to 41% post-intervention. Conclusion: The implementation of a nurse-driven protocol CAUTI bundle, education, and champions in the unit were successful interventions that decreased the catheter-associated urinary tract infection rates in the rehabilitation center.
COVID-19: Best Practices and the Way Forward
Authors:   , Nwauwa Juliana
Published: December 2020

COVID-19 is a global health emergency that originated in Wuhan, China, in December 2019. It was declared a pandemic on March 11, 2020, and since then has affected more than 53,507,282 individuals and claimed the lives of more than 1,305,164 around the globe. It is a respiratory virus transmitted from person to person through airborne aerosols and droplets from infected individuals and direct contact with infected surfaces. Numerous factors, such as socioeconomic status, population density, pre-existing health conditions, and lack of health insurance, have contributed to the disproportionate impact of COVID-19 among certain demographic groups. The COVID-19 impact ranges from family disruptions, school closures, business closures, economic impact, international travel, and trade disruptions. COVID-19 is still evolving as new evidence is being identified. Preventive measures, such as using personal protective equipment (PPE), hand hygiene, social distancing, and avoiding large group gatherings, have been shown to help reduce the spread of COVID-19. With remdesivir being the only approved treatment of COVID-19, supportive treatments have been implemented to help the patient with moderate to severe symptoms while efforts for vaccine production and availability are still in progress. A national and global approach to preventive measures is recommended with increased healthcare access, especially to high-risk populations, and expanded educational awareness for improved population health. Healthcare leaders, government, and private healthcare agencies, policymakers, and legislators are urged to adopt these recommendations to improve the COVID-19 pandemic response and be prepared for future health emergencies.
Y el COVID-19 transformó al sistema educativo: reflexiones y experiencias por aprender
Authors: Cabero Almenara Julio , Valencia Rubicelia
Published: December 2020

La situación producida por el COVID-19 ha impactado fuertemente el sistema educativo de todos los niveles educativos en una forma rápida y traumática, trasladando las clases presenciales a la modalidad virtual, a distancia, y las tecnologías de la información y comunicación han tenido fuerte significación en este proceso. Este aprendizaje mediado por las tecnologías ha tenido grandes consecuencias respecto a cómo el profesor imparte la enseñanza, cómo el estudiante interacciona en dicho contexto, y cómo se llevan a cabo las tareas escolares. La diferencia en el acceso de los estudiantes a las tecnologías ha tenido repercusiones y ha aumentado la brecha social. De esta situación debemos aprender e identificar una serie de variables que han dificultado el proceso: formación del profesorado y el alumnado respecto a sus competencias digitales, la significación asignada a diferentes  tecnologías, la necesidad de poner a disposición de los alumnos tecnologías a in de evitar la ampliación de la brecha digital, y la necesidad de transformar las funciones desempeñadas por el docente así como la concepción del proceso de enseñanza-aprendizaje. El aprendizaje virtual llegó para quedarse y la atención ahora debe ponerse en el compromiso, la eficacia y la potenciación de la práctica reflexiva.
Efecto de las barreras de innovación en la capacidad de absorción de las empresas innovadoras
Authors: Carpio Freire Carlos Raúl , Afcha Chávez Sergio Moisés
Published: December 2020

El presente trabajo estudia la importancia de la capacidad de absorción de las empresas innovadoras y el efecto que en ella ejercen las barreras de innovación. Se revisa además la gestión de inversión en capacidad de absorción como promotor de innovación y se exponen las implicaciones al nivel de desempeño de las empresas en cuestiones de procesos y posición en el mercado. Se realiza el análisis mediante modelos de regresión lineal simple y múltiple. Finalmente, el impacto de la innovación en las empresas se obtuvo mediante un análisis de componentes principales.
Empaquetamiento e incentivos para mejoras en calidad
Authors: Correa Alexander
Published: December 2020

Este estudio presenta la competencia más allá de un solo mercado producto donde una firma multiproducto compite con rivales monoproducto mediante el uso de diferentes estrategias de empaquetamiento que impactan los incentivos de las firmas por realizar mejoras de calidad en diferentes modos. La estrategia de empaquetamiento puro puede hacer que la firma multiproducto invierta en mejoras de calidad cuando los costos asociados son comparativamente bajos y la utilidad adicional de la mejora de calidad es relativamente alta, pero desalienta a las firmas monoproducto a mejorar la calidad. En el caso de empaquetamiento mixto, este resultado inevitablemente sucede en el mercado más competitivo y probablemente se encuentra en el mercado menos competitivo cuando los mercados no son tan diferentes en intensidad competitiva. Por lo tanto, ambas estrategias de empaquetamiento afectan el excedente del consumidor cuando los dos mercados son significativamente diferentes en la intensidad de la competencia debido a la influencia negativa de las distorsiones del mercado después de interrelacionar los dos mercados.
Industria 4.0 y la digitalización hacia la satisfacción laboral de las organizaciones en Tampico, Tamaulipas, México
Authors: Díaz Martínez Marco Antonio , Román Salinas Reina Verónica , Santiago Santiago Ariadna Dauleta , Barrios Catalina Mejía , Cruz Ricardo Zárate
Published: December 2020

La industria 4.0 está relacionada en cada lugar y con el uso y la implementación de nuevas tecnologías para la mejora continua de los procesos administrativos. Como parte del crecimiento de una organización, es importante que día a día se adapte a los cambios tecnológicos que afectan las operaciones de los trabajadores o la seguridad laboral. Algunos de los elementos que abarca esta industria son el uso de equipos autónomos, robótica, simuladores de procesos, impresoras 3D, inteligencia artificial y equipos que comparten información en tiempo real. El objetivo de este artículo consiste en valorar los procesos de digitalización de las organizaciones de la ciudad de Tampico, Tamaulipas (México), desde el punto de vista del usuario, para identificar los factores determinantes de la satisfacción laboral. Se emplea la técnica multivariante de regresión de mínimos cuadrados parciales, considerando como factores de análisis de digitalización y su relación con el modelo de relación y colaboración, habilidades y competencias profesionales, formación digital y procesos de digitalización. Los resultados muestran que el grado de motivación aumenta con el incremento en la digitalización de los procesos y que la formación digital y las competencias profesionales necesitan aumentar gradualmente para tener un impacto positivo en relación con los procesos de digitalización.
Johnson Pseudo-Contractibility and Pseudo-Amenability of θ-Lau Product
Authors: ASKARI-SAYAH M. , POURABBAS A. , SAHAMI A.
Published: December 2020

Given Banach algebras A and B and θ ∈ ∆(B). We shall study the
Johnson pseudo-contractibility and pseudo-amenability of the θ-Lau product A×θ B.
We show that if A ×θ B is Johnson pseudo-contractible, then both A and B are
Johnson pseudo-contractible and A has a bounded approximate identity. In some
particular cases, a complete characterization of Johnson pseudo-contractibility of
A ×θ B is given. Also, we show that pseudo-amenability of A ×θ B implies the
approximate amenability of A and pseudo-amenability of B.
New Explicit Bounds on Gronwall-Bellman-Bihari-Gamidov Integral Inequalities and Their Weakly Singular Analogues with Applications
Authors: MEKKI M. , BOUKERRIOUA K. , KILANI B. , SAHARI M. L.
Published: December 2020

In this paper we derive some generalizations of certain Gronwall- Bellman-Bihari-Gamidov type integral inequalities and their weakly singular analogues, which provide explicit bounds on unknown functions. To show the feasibility of the obtained inequalities, two illustrative examples are also introduced.
INVESTIGATION OF THE EFFECT OF FATHER EDUCATION ON THE PERCEPTION OF FATHERHOOD IN THE LIFELONG LEARNING PROCESS
Authors: Şölen Yeşim , Ulusoy Yıldız Öztan
Published: December 2020

In this study, the perceptions of fathers with children in the preschool period towards the concept of fatherhood, a lifelong learning process, and father education after the father education they received, were examined. The study was carried out with a qualitative research method. The sample of the study consisted of 14 fathers who had children attending two kindergartens in Kocaeli in the 2018-2019 academic year and volunteering to participate in the study. Fourteen fathers in the group were interviewed after the training program was applied. As a result of the face-to-face interviews with the semi-structured interview form, what they expressed about fatherhood, how they expressed themselves as fathers in the lifelong learning process, and their thoughts on participation in father education were obtained. It is known that the father has a critical role in the formation of the child's personality. Father education should be given importance to raise happy and healthy individuals. Today, it has been observed that there is a transition from the patriarchal social structure to modernity, and the fathers' traditional thoughts have changed, and they have started to think more child-oriented. It has been revealed that fathers gain awareness after education and fatherhood is a conscious and learnable phenomenon when an effort is made.

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ВЛИЯНИЕ ТЕМПЕРАТУРЫ И ВЛАЖНОСТИ ВОЗДУХА НА РАБОЧИЕ ХАРАКТЕРИСТИКИ ВОДОКОЛЬЦЕВЫХ ВАКУУМНЫХ НАСОСОВ
Authors: Наумов Владимир Аркадьевич
Published: December 2020

Главным недостатком водокольцевых вакуумных насосов (ВКН) является сравнительно невысокий общий коэффициент полезного действия (КПД). Произ-водители ВКН, как правило, размещают в открытом доступе экспериментальные зависимости скорости откачки (расхода) воздуха и затраченной мощности от дав-ления всасывания. Но ни одна фирма не дает информации об энергетической эф-фективности ВКН. Ранее был предложен метод сравнения энергетической эффек-тивности разных моделей ВКН с помощью расчета изотермного КПД на основе математического моделирования нагрузочных характеристик. При этом использовались результаты испытаний ВКН только при откачке сухого воздуха. В статье выполнен анализ нагрузочных характеристик ВКН ряда производителей. Он подтвердил увеличение скорости откачки влажного воздуха по сравнению с сухим. При этом максимум изотермного КПД возрастает всего на несколько процентов при давлении всасывания P = 25-45 кПа. Показано, что увеличение частоты вращения вала может привести к некоторому снижению изотермного КПД. Зависимости поправочного коэффициента производительности K от P при одинаковых условиях (воздух 100%-ной влажности с температурой 20°C, температура воды 15°C) схожи почти у всех моделей исследованных ВКН. Вплоть до P ≥ 10 кПа величина K не превышает 1,2-1,3. Только при предельно малом давлении можно получить значение K, близкое к двум. На практике при таких давлениях ВКН не эксплуатируются из-за низкой энергетической эффективности. Исключение составляют результаты испытаний насосов фирмы «Samson», показывающие увеличение производительности на 34% уже при P = 20 кПа. С ростом температуры влажного воздуха T увеличивается скорость откачки ВКН. Если T = 50°C, то уже при P = 15 кПа поправочный коэффициент производительности достигает K = 2,5. Используя в качестве рабочего тела влажный воздух, можно подобрать условия для значительного роста производительности ВКН. При этом повышение энергетической эффективности ВКН будет небольшим.
КУЛЬТИВИРОВАНИЕ РАННЕЙ МОЛОДИ СУДАКА (SANDER LUCIOPERCA) И ОКУНЯ (PERCA FLUVIATILIS) НА ИСКУССТВЕННЫХ ДИЕТАХ
Authors: Лютиков Анатолий Анатольевич , Королев Александр Евгеньевич , Остроумова Ирина Николаевна
Published: December 2020

Приводятся результаты культивирования окуня и судака на экспериментальных стартовых искусственных кормах с самого начала питания личинок без использования живого корма. Основными компонентами кормов являлись белок микробного происхождения, гидролизаты белка теплокровных животных, рыбная и мясная мука, пшеничная мука, фосфолипиды, премиксы, физиологически активные добавки. Пищевая ценность кормов составляла: белок 54,3-61, жир 10,3-15, безазотистые экстрактивные вещества (БЭВ) – 6,4-14,4%. Личинок выращивали в 8-литровых аппаратах Вейса при начальной плотности посадки 75-100 экз./л, окуня массой 34 мг переводили в круглый бассейн с плотностью посадки 9 экз./л. Наилучшие результаты были получены на кормах, содержащих в своем составе белок микробиологического синтеза. Выживаемость на такой диете окуня составила 28,5% (возраст 56 сут, масса 1194 мг), судака – 12,6% (возраст 34 сут, масса 154 мг). Основная доля погибшей молоди приходилась на период полного перехода на экзогенное питание. Во время выращивания судак характе-ризовался высокой скоростью роста – показатель среднесуточного прироста в первые три недели эксперимента находился в пределах 21,7-24, у окуня – 16,3%. Установлена высокая чувствительность личинок судака к качеству стартовой диеты – по итогам 21 сут использования корма с признаками окисления выживаемость личинок составила 2,3%. Кроме низкой выживаемости около 75% особей имели различные скелетные деформации и незаполненный газом плавательный пузырь. Полученные результаты указывают на возможность культивирования ранних личинок окуневых рыб исключительно на искусственных диетах при условии контроля качества используемых кормов.
ИССЛЕДОВАНИЕ ОПТИЧЕСКИХ И ТЕРМОРАДИАЦИОННЫХ ХАРАКТЕРИСТИК ВСПЕНЕННОГО РАСТВОРА ЖЕЛАТИНА ИЗ ОТХОДОВ ПЕРЕРАБОТКИ РЫБЫ
Authors: Макаров Александр Викторович , Максименко Юрий Александрович , Дяченко Эдуард Павлович
Published: December 2020

Экспериментально-аналитически исследованы оптические и терморадиационные характеристики вспененного раствора желатина из отходов переработки рыбы как объекта инфракрасной (ИК, радиационной) сушки при двустороннем энергоподводе. Расчет оптических и терморадиационных характеристик исследуемого продукта проводился с использованием метода усредненных оптических и терморадиационных характеристик на основе эмпирических данных о направленно-полусферических терморадиационных характеристиках Rλ и Tλ, полученных на многофункциональном спектрофотометре PHOTON RT. В результате исследований и расчетов для вспененного раствора желатина найдены зависимости коэффициента эффективного ослабления потока излучения по мере распространения в оптически бесконечно толстом слое L, м-1, и распределения объемной плотности поглощенной энергии излучения по глубине оптически тонкого слоя W, Вт/м3, от влажности продукта w, кг/кг, и координаты толщины пенослоя x, м. Выполнен анализ зависимости распределения объемной плотности поглощенной энергии излучения по глубине оптически тонкого слоя от координаты толщины слоя и влажности продукта. В результате экспериментально-аналитического изучения оптических и терморадиационных характеристик вспененного раствора желатина с учетом объемной плотности поглощенной энергии излучения по глубине слоя выбраны инфракрасные излучатели, режимы их работы, в том числе оптимальный диапазон длины волны λ, мкм, соответствующий максимальной интенсивности излучения и максимальной пропускательной способности продукта, а также оптически тонкий слой h, м, наиболее рациональный для высокоинтенсивной сушки.
ОБСЕМЕНЕННОСТЬ КОРЮШКИ (OSMERUS EPERLANUS) БАКТЕРИЯМИ РАЗЛИЧНЫХ ТАКСОНОМИЧЕСКИХ ГРУПП
Authors: Авдеева Елена Витальевна , Мажуга Елизавета Владимировна , Новожилов Олег Анатольевич
Published: December 2020

Исследование микрофлоры корюшки проводилось впервые, ранее изучалась только паразитофауна этого вида рыбы. Корюшка – массовый объект питания населения Калининградской области, изучение микрофлоры позволит предотвратить возможные инфекционные заболевания человека. Необходимо осуществлять дальнейший мониторинг по обсемененности бактериями корюшки для своевременного выявления условно-патогенных бактерий, способных вызы-вать бактериальные заболевания. Нами были проведены исследования микрофлоры корюшки Osmerus eperlanus (Linneus, 1758) за пятилетний период (2014-2019 гг.).

Материалом послужили 92 экземпляра рыбы из устья р. Неман и р. Матросовки. Изучали культуральные, морфологические и физиолого-биохимические признаки бактерий по общепринятой в ихтиопатологии методике. Определяли бактерии до рода и вида с помощью Определителя бактерий Берджи по культуральным, морфологическим и физиолого-биохимическим признакам, исследование проводили по 16 тестам. В микрофлоре корюшки обнаружили 41 вид бактерий, принадлежащих к следующим родам: Acinetobacter, Aeromonas, Alcaligenes, Bacillus, Citrobacter, Enterobacter, Kurthia, Micrococcus, Escherichia, Plesiomonas, Pseudomonas, Renibacterium, Staphylococcus и Streptococcus. Выявили 13 видов условно-патогенных бактерий, которые могут в стрессовых условиях вызвать заболевания исследуемого объекта. Также корюшка была обсеменена тринадцатью видами сапрофитных бактерий, являющихся характерной для нее микрофлорой, и пятнадцатью видами санитарно-значимых бактерий, из них два вида – бактерии группы кишечной палочки, наличие которых свидетельствует о загрязнении воды хозяйственно-бытовыми сточными водами в исследуемом нами водоеме. Микрофлора корюшки из устья р. Неман была не такой разнообразной, как у рыбы из р. Матросовки. Наиболее обсемененные внутренние органы – сердце, печень и селезенка. Работа актуальна, так как микрофлора корюшки из водоемов Калининградской области исследовалась впервые.
ИСПОЛЬЗОВАНИЕ СЕМЯН БЕЛОГО ЛЮПИНА (LUPINUS ALBUS L.) В ТЕХНОЛОГИИ МУЧНЫХ КОНДИТЕРСКИХ ИЗДЕЛИЙ
Authors: Рыков Артем Игоревич , Агафонова Светлана Викторовна
Published: December 2020

Исследовано содержание белка и незаменимых аминокислот в ядрах бело-го люпина (Lupinus albus L.). Установлено высокое содержание белка на уровне 37,79 % и количество всех незаменимых аминокислот (г/100 г белка): валин (1,75), изолейцин + лейцин (2,36), лизин (1,85), метионин + цистин (0,82), треонин (1,75), триптофан (0,32), фенилаланин + тирозин (3,34). Рассчитана биологическая ценность люпинового белка, которая составила 76,12 %. Представлена рецептура вафель повышенной биологической ценности, которая включает в себя пшеничную муку, измельченные ядра люпина, маргарин, молоко коровье пастеризованное, яичный меланж, сахар. Обосновано количество люпиновой добавки, вносимой в сахарные вафли (15 %), и время выпечки изделий (1,5 мин). Приведена технологическая схема производства обогащенных вафель «Люпиновые», включающая такие операции, как приготовление люпиновой муки (замачивание, шелушение, сушка, измельчение люпина), просеивание муки, составление рецептурной смеси с последующим замесом теста, после чего идет выпечка вафель при температуре 200°С. Перед упаковыванием и маркированием продукция охлаждается и реализуется на конечный рынок. Исследован общий химический состав обогащенных вафель, содержащих 13,7 % белка с биологической ценностью 73,46, а также характеризующихся повышенным содержанием незаменимых аминокислот (г/100 г белка): валин (1,55), изолейцин + лейцин (2,36), лизин (2,03), метионин + цистин (1,43), треонин (1,35), триптофан (0,42), фенилаланин + тирозин (3,04). Разработаны проекты технических условий ТУ 10.72.12-XXX-00471544-2019 и технологической инструкции к ТУ 10.72.12-XXX-00471544-2019. Срок хранения вафель – 30 сут при относительной влажности воздуха не более 75 % и темпера-туре (18±5)°С.