bluuebunny/crossref_metadata_2025 huggingface dataset:
Questioning the adequacy of standardized vitamin D supplementation protocol in very low birth weight infants: a prospective cohort study
Authors: Sarıdemir Hatice , Surmeli Onay Ozge , Aydemir Ozge , Tekin Ayse Neslihan
Published: August 2021

Objectives

Preterm infants are at increased risk for vitamin D deficiency (VDD). We aimed to assess the adequacy of standardized vitamin D supplementation protocol in very low birth weight (VLBW) infants. Additionally, vitamin D status of mother/infant couples and the associations between vitamin D status at birth and morbidities of the infants were investigated.

Methods

In this single-center, prospective cohort study blood samples were collected from 55 mothers just before delivery and from their infants at birth and on the 30th day of life (DOL) for 25 hydroxy vitamin D (25OHD) measurements. Vitamin D was initiated in dose of 160 IU/kg by parenteral nutrition on the first DOL and oral vitamin D supplementation (400 IU/day) was administered when enteral feedings reached 50% of total intake or on the 15th DOL.

Results

The median 25OHD levels of the infants were 16.12 (9.14–20.50) in cord blood and 36.32 (31.10–44.44) in venous blood on the 30th DOL (p<0.01). In 98% of the VLBW infants 25OHD reached sufficient levels on the 30th DOL. None of the mothers had sufficient vitamin D levels (25OHD >30 ng/mL). Maternal 25OHD levels were correlated with the 25OHD levels of the infants in cord blood (r=0.665, p<0.001). There was a significant difference in mean cord 25OHD levels between winter (13.65 ± 5.69 ng/mL) and summer seasons (19.58 ± 11.67 ng/mL) (p=0.021). No association was found between neonatal morbidity and vitamin D status.

Conclusions

The results clearly show that by utilizing the current supplementation protocol, the majority of VLBW infants with deficient/insufficient serum 25OHD levels reached sufficient levels on the 30th DOL. Furthermore, vitamin D levels in mother/infant couples were found to be highly correlated.
Left-wing extremist violence: Risk and protective factors in a targeted sample of potential extremists
Authors: Jugl Irina , Bender Doris , Lösel Friedrich
Published: August 2021

Während in den vergangenen Jahren die Forschung zum politisch rechtsorientierten und religiös-islamistischen Extremismus zunahm, blieb eine ähnliche Entwicklung beim Linksextremismus aus. Die vorliegende Studie untersucht spezifische Risiko- und Schutzfaktoren des Linksextremismus. Die Daten stammen aus einer Onlinebefragung mit 144 potentiellen Linksextremen, die wir mittels eines Online-Fragebogens u. a. über einschlägige linksaffine und -extreme Gruppierungen rekrutierten. Wir konzentrierten uns in unserer Studie auf aggressives und gewalttätiges Verhalten (nicht nur auf Einstellungen). 51 % unserer Teilnehmer waren männlich, das Durchschnittsalter warM= 26.74 (SD= 6.11). 92 Teilnehmer berichteten, politisch motivierte Gewalt gegen Personen und/oder Sachen begangen zu haben. Erhoben wurden theoretisch fundierte Einflussfaktoren der Person und des sozialen Umfelds. Eine hierarchische Regression konnte circa 50 % der Varianz der Gewalttätigkeit aufklären. Die Integration in ein gewaltbereites extremistisches Netzwerk hing deutlich mit der Durchführung extremistisch motivierter Gewalt zusammen. Eine persönliche kriminelle Vorgeschichte ging ebenfalls mit mehr politischer Gewalt einher. Wahrnehmungen von prozeduraler Gerechtigkeit und Legitimität konnten als Schutzfaktoren identifiziert werden. In einer explorativen Diskriminanzanalyse untersuchten wir Unterschiede zwischen Personen, die »nur« Gewalt gegen Sachen ausgeübt hatten, und jenen, die auch Gewalt gegen Personen berichteten. Gewaltorientierte extremistische Einstellungen waren der wichtigste Aspekt bei der Vorhersage der Gruppenzugehörigkeit. Die Ergebnisse werden theoretisch eingeordnet sowie Stärken und Schwächen der Studie diskutiert. Mehr empirische Untersuchungen zum Linksextremismus sind nötig, insbesondere solche mit einem längsschnittlichen Design.
Micro and macro-level risk factors for extremism and terrorism: Toward a criminology of extremist violence
Authors: LaFree Gary , Schwarzenbach Anina
Published: August 2021

Over the past twenty years, research onpolitical extremismandterrorismhas become one of the fastest growing sub-fields within criminology. This rapid growth is reminiscent of the early years ofcriminologyitself, characterized by energy, imagination and creativity but at the same time a specialization struggling to collect and analyze valid data, apply appropriate research methods and develop coherent theoretical frameworks. In this paper, we take stock of these developments by considering a basket ofmicro- and macro-level risk factorsthat have been frequently linked to the decision to engage in violent extremism. Following a review of risk factors, we consider major definitional, theoretical, data and methodological challenges and also progress made. Prior criminological research on violent extremism has focused especially on micro-level characteristics and few studies to date have integrated micro and macro determinants to explain extremist outcomes. However, with the growing availability of data, including open-source databases, paired with the application of more sophisticated statistical methods, we expect to see more robust results in the years ahead.
Perceived injustice, perceived group threat and self-reported right-wing violence: An integrated approach
Authors: Williamson Harley , De Buck Ann , Pauwels Lieven JR
Published: August 2021

The present study seeks to explain individual differences in self-reported politically motivated violence and vandalism, and participation within an extreme right-wing group. While violent extremism is highly debated, few criminological studies explicitly test factors that can trigger violent extremism. The present study addresses this gap by integrating two different frameworks: a perceived injustice and group threat-initiated model and an impulsivity-initiated model. We also investigate several intervening mechanisms. We draw on a sample of 705 adolescents and young adults living in Flanders, Belgium to test the strength of direct and intermediary effects of perceived injustice, perceptions of out-group threat from Jewish populations, ethnocentrism, feelings of superiority, moral support for right-wing extremism, and exposure to racist peers on politically motivated violence and vandalism. Results of structural equation models (SEM) indicate various direct and intermediary effects between both perceived injustice and violent extremism, and between impulsivity and violent extremism. Our model reveals the complex and intricate antecedents of violent extremism. Importantly, we find that feelings of injustice and unfair treatment are a major source of extremist violence, as they easily trigger often debated causes such as high in-group identification and ethnocentrism. Implications of these findings for preventing violent extremism are discussed, given the centrality of perceptions of injustice and threat.
Adsorption of biopolymers onto nanocelluloses for the fabrication of hollow microcapsules
Authors: Lombardo Salvatore , Cathala Bernard , Villares Ana
Published: August 2021

In this work, we studied the multilayer adsorption of cellulose nanocrystals and cellulose nanofibers with other polysaccharides such as xyloglucan and chitosan. We showed that the specific interactions between these biopolymers can be exploited to prepare three-dimensional functional materials. Quartz crystal microbalance studies showed that both biopolymers were adsorbed irreversibly on the nanocellulose surfaces. In aqueous media, the maximum amount of adsorbed polymer was higher for the smaller and more crystalline cellulose nanocrystals, compared to cellulose nanofibers. For both nanocelluloses employed, the amount of xyloglucan of the first bilayer was larger than the amount of chitosan adsorbed. Ellipsometry showed that both xyloglucan and chitosan were adsorbed on nanocellulose surfaces. However, at the second layer no mass change was detected by quartz crystal microbalance when xyloglucan was added, while for addition of successive layers of chitosan a decrease of frequency was detected. The water uptake of multilayers was higher for cellulose nanocrystals than for nanofibers, which was ascribed the presence of voids in the nanocrystal layer. Finally, we demonstrated that multilayer adsorption of these biopolymers can be performed on calcium carbonate sacrificial templates, which can then be removed to yield hollow polysaccharide microcapsules.
Rheological and thermal stability of interpenetrating polymer network hydrogel based on polyacrylamide/hydroxypropyl guar reinforced with graphene oxide for application in oil recovery
Authors: Narimani Amir , Kordnejad Farid , Kaur Prabhjyot , Bazgir Saeed , Hemmati Mahmood , Duong Adam
Published: August 2021

The purpose of the present work is to enhance the thermal stability and rheological properties of semi-interpenetrating polymer network (IPN) hydrogel based on partially hydrolyzed polyacrylamide/hydroxypropyl guar (HPAM/HPG) nanocomposite reinforced with graphene oxide (GO), at temperatures (200 and 240 °F) for use in oil recovery applications. FTIR spectra of the IPN nanocomposite hydrogels revealed interactions of GO with HPAM/HPG chains. An increase in the viscosity is also observed from the rheological study. Moreover, IPN and its nanocomposite hydrogels exhibited non-Newtonian behavior. The decline of viscosity of IPN nanocomposite hydrogels was observed with an increase in the temperature from 200 to 240 °F but was still higher than IPN hydrogel without GO. Dispersion of GO through the HPAM/HPG hydrogel matrix was evaluated by SEM morphology and electrical conductivity. The IPN nanocomposite hydrogels showed high viscosity stability, thermal stability, and flow activation energy as compared to IPN hydrogel without GO. Therefore, the addition of 0.1 wt.% of GO to the HPAM/HPG matrix is suitable to create a cross-linked polymer solution with improved properties which may be beneficial for use in oil recovery applications.
Distinct Opsin 3 (Opn3) Expression in the Developing Nervous System during Mammalian Embryogenesis
Authors: Davies Wayne I. L. , Sghari Soufien , Upton Brian A. , Nord Christoffer , Hahn Max , Ahlgren Ulf , Lang Richard A. , Gunhaga Lena
Published: August 2021

Opsin 3 (Opn3) is highly expressed in the adult brain, however, information for spatial and temporal expression patterns during embryogenesis is significantly lacking. Here, anOpn3-eGFP reporter mouse line was used to monitor cell body expression and axonal projections during embryonic and early postnatal to adult stages. By applying 2D and 3D fluorescence imaging techniques, we have identified the onset of Opn3 expression, which predominantly occurred during embryonic stages, in various structures during brain/head development. In addition, this study defines over twentyOpn3-eGFP-positive neural structures never reported before.Opn3-eGFP was first observed at E9.5 in neural regions, including the ganglia that will ultimately form the trigeminal, facial and vestibulocochlear cranial nerves (CNs). As development proceeds, expandedOpn3-eGFP expression coincided with the formation and maturation of critical components of the central and peripheral nervous systems (CNS, PNS), including various motor-sensory tracts, such as the dorsal column-medial lemniscus (DCML) sensory tract, and olfactory, acoustic, and optic tracts. The widespread, yet distinct, detection ofOpn3-eGFP already at early embryonic stages suggests that Opn3 might play important functional roles in the developing brain and spinal cord to regulate multiple motor and sensory circuitry systems, including proprioception, nociception, ocular movement, and olfaction, as well as memory, mood, and emotion. This study presents a crucial blueprint from which to investigate autonomic and cognitive opsin-dependent neural development and resultant behaviors under physiological and pathophysiological conditions.
La radio: una caja sonora que aman los colombianos
Authors: Chaves Solano Clarisa
Published: August 2021

Un parloteo incesante en la copa de un árbol frondoso. El carretero gritando que recoge materiales de reciclaje. Una onda sonora, suave, desde la ventana de un apartamento. Todo un musical marca cómo la tarde cae en la ciudad. Mientras se aprecia el entorno, en silencio, respiro para no desentonar con la orquesta natural. Así mismo, es la radio, la música, la voz, los efectos y el silencio, cuatro elementos básicos de su cotidiana existencia.
Convento de Nuestra Señora del Rosario y el Colegio-Universidad de Santo Tomás, Santafé de Bogotá
Authors: Gómez Bello Eduardo Alberto
Published: August 2021

Con 16 frailes se fundó el Convento de Nuestra Señora del Rosario el 26 de agosto de 1550, en la zona de la Calle Real (actualmente, entre carreras 7.ª y 8.ª y calles 11 y 12b), donde hoy funciona el edificio Murillo Toro. Reconstruir la historia del Convento es hacer lo mismo con el Colegio-Universidad de Santo Tomás, ubicado este en la carrera 8 a con calle 12b, fundado el 13 de junio de 1580. Mientras que el Convento de Nuestra Señora del Rosario funcionó ininterrumpidamente hasta 1861 cuando el presidente Tomás Cipriano de Mosquera lo expropió y pasó a manos del Gobierno, el Colegio-Universidad sí sufrió varios cambios jurídicos durante los siguientes siglos, hasta 1966 cuando se normaliza definitivamente.
Masculinity and Sport Revisted: A Review of Literature on Hegemonic Masculinity and Men's Ice Hockey in Canada
Authors: MacDonald Cheryl A.
Published: August 2021

Ice hockey is particularly significant in Canada as it acts as a primary site of socialization for boys and men. This form of socialization raises questions about masculinity on the public agenda in terms of the problematic nature of hypermasculinity in sport, stereotypical images of athletes, and questions of social responsibility as both men and athletes. These issues are presently relevant as Canada (and perhaps all of North America) finds itself in an era characterized by accounts in mainstream media of competitive athletes’ cavalier lifestyles, hazing, violence, homophobia, drug addictions, and suicides. This review of literature uses secondary research to problematize masculinity in the ice hockey context by presenting the overarching claim that male hockey players are hegemonically masculine individuals. The piece begins by defining Australian sociologist R.W. Connell’s (1987) concept of hegemonic masculinity and situating it in the contemporary academic context. Next, it offers an overview of relevant literature on masculinity and sport along with a concise examination of scholarly work on the relationship between hegemonic masculinity and ice hockey in Canada. It concludes by summarising calls for further research in the literature and by suggesting approaches to future studies in the field.
Book review: Offending from Childhood to Young Adulthood---- Recent Results from the Pittsburgh Youth Study
Authors: Li Yiyan
Published: August 2021

The author of the book review briefly introduces the content of the book Offending from Childhood to Young Adulthood. This book provides valuable account of the continuity of criminal career from childhood to adulthood.
Unbalanced Scales of Global Capitalism: Analyzing Temporary Foreign Worker Programs in Canada
Authors: Callon Emma
Published: August 2021

This article analyzes several characteristics of two of Canada’s Temporary Foreign Worker Programs (TFWPs): The Seasonal Agricultural Worker Program (SAWP) and the Live-in Caregiver Program (LCP). First, I consider the social and economic contexts in which these programs have emerged. Second, I discuss how these programs maintain racial and gendered hierarchies. Third, I problematize the relationship TFWPs have with citizenship status, as well as critique TFWPs as a long-term solution to Canadian labour shortages. Last, I discuss the potential benefits of these TFWPs and suggest alternatives and potential improvements to the programs. Using a Marxist framework, this analysis situates Canada’s TFWPs within the broader political economy and argues that global capitalism and the state interact to serve the people and economies of the Global North at the expense of migrant workers from the Global South. Cet article examine deux programmes des travailleurs étrangers temporaires (PTET) du Canada: le Programme des travailleurs agricoles saisonniers (PTAS) et le Programme concernant les aides familiaux résidants (PAFR). Cet essai examine plusieurs aspects des PTET. Premièrement, je tiens compte du contexte social et économique dans lequel ces programmes sont apparus. Deuxièmement, j’explique comment ces programmes maintiennent une hiérarchie basée sur la race et le sexe. Troisièmement, je pose le problème des relations entre les PTET et le statut de citoyen, et je formule également une critique du PTET comme solution à long terme à la pénurie de main-d’œuvre canadienne. Enfin, je discute des avantages potentiels de ces PTET et propose des solutions de rechange et des façons d’améliorer les programmes. À l’aide d’un cadre d’analyse marxiste, les PTET du Canada sont évalués globalement dans le contexte de l’économie politique et il est proposé que le capitalisme mondial et l’État interagissent au service des citoyens et des économies de l’hémisphère nord, au détriment des travailleurs migrants en provenance de l’hémisphère sud.
“Poetic” publics: Agency and rhetorics of “netroots” activism in post-earthquake L’Aquila
Authors: Pietrucci Pamela
Published: August 2021

In this essay, I analyze the rise of post-earthquake activism in L’Aquila as an exemplification of counterpublics’ transformation into social movements endowed with “poetic” agency. Engendering “poetic agency,” for a counterpublic and for a social movement alike, denotes being able to bring forth change in the world and  being able to generate change in a creative, “poetic” way. In this sense, poetic assumes a connotation that opposes  the Habermasian perspective of a public sphere in which only a  rational-critical discourse can be engendered as check on the State. In the case of L’Aquila, I contend that the post-earthquake social movements’ capability of effecting  change in public life through poiesis has been enhanced by the possibilities of the Web 2.0 and by the activists’ acknowledgement of new ways of political participation in a world of spectacularized politics. In this instance, strategies such as the exploitation of alternative “public screens” on the web and the use of “minor rhetorics” to contrast the mainstream media portrayal of the post-disaster situation worked together in a creative and spontaneous effort to improve the condition of the people living in the area affected by the quake.
Rhetoric and the Digital Humanities: Imagining The Michigan State University Israelite Samaritan Collection as the Foundation for a Thriving Social Network
Authors: Ridolfo Jim , Hart-Davidson William , McLeod Michael
Published: August 2021

This article discusses the design of a culturally-tailored digital archive with the Samaritan community in Israel and the Palestinian Authority. The aim is to bring together two distinct groups of users - textual scholars and members of the Israelite Samaritan community - both of whom have a significant stake in the cultural and scholarly value of the Samaritan Archive, via an online environment in which they can view and interpret the Samaritan texts, interact with members of their respective communities, and interact with one another.
Towards Participatory Action Design Research: Adapting Action Research and Design Science Research Methods for Urban Informatics
Authors: Bilandzic Mark , Venable John
Published: August 2021

This paper proposes a new research method, Participatory Action Design Research (PADR), for studies in the Urban Informatics (UI) domain. PADR supports UI research in developing new technological means (e.g. using mobile and ubiquitous computing) to resolve contemporary issues or support everyday life in urban environments. Situated in a socio-technical context, UI requires a close dialogue between social and design-oriented fields of research as well as their methods. PADR combines Action Research and Design Science Research, both of which are used in Information Systems, another field with a strong socio-technical emphasis, and further adapts them to the cross-disciplinary needs and research context of UI.
Introduction to the Special Issue: Research in Action for Community Informatics: A Matter for Conversation
Authors: Allen Matthew , Foth Marcus
Published: August 2021

In this introduction to the special issue on research in action, we briefly outline an argument concerning the importance of conversation,suggesting that, first, conversational uses of ICTs make them most suitable for community informatic development, and second, that their effective adoption and research requires conversation for that process to be effective.
Conducting ICT Research in Community Networks: Reflections from a Long Term Study of the European Social Forum
Authors: Saeed Saqib , Rohde Markus , Wulf Volker
Published: August 2021

Universities and research institutions need to cooperate with civil society networks to conduct socially responsible research in the field. These social organizations differ from traditional organizations as to their organizational form, structure, operations and work practices, which add further implications to the field work. In this paper, we will present our experiences of conducting ethnographic action research at the European Social Forum, which is a European network of heterogeneous social activists participating in the anti-globalization movement. We will discuss the problems that we faced in our field work and will then briefly describe the findings of our work to help other researchers comprehend the difficulties in conducting field work in such settings.
Crack growth analysis for rice husk reinforced polypropylene composite using equivalent initial flaw size concept
Authors: Mohamed Sity Ainy Nor , Zainudin Edi Syams , Sapuan S. M. , Md. Deros Mohd Azaman , Tajul Arifin Ahmad Mubarak
Published: August 2021

Crack growth that takes place in natural fibre polymer composite formations is dependent on several factors, whereby primary crack size is a key aspect that influences uncertainty of the crack growth. The nucleation stage is strongly affected by the fracture collapse of structures, unavoidably affecting the accuracy of the estimation of total fatigue life. In this research, fatigue crack was examined using rice husk/polypropylene composite specimens across stress loads ranging from 80 to 90% for ultimate tensile strength at the stress ratios R=0.1, 0.3, and 0.5. Consequently, the propagation rate of the crack was dependent on the stress ratio. Crack resistance showed a drop in the propagation rate of the crack rate with an increase in the R value. This effect produced more fibres/matrix fracture at high stress ratio, in comparison to the low stress ratio, which was verified further through scanning electron microscopy. Moreover, the S-N curve method was proposed, as it facilitates the deterministic total fatigue life discovery in a highly favorable manner via equivalent crack size approach. A strong consensus was observed between the model of prediction and the outcomes of the experiment.
Analysis of char prepared by pyrolysis of dabai (Canarium odontophyllum) nutshells as a potential precursor of biocarbon used for wastewater treatment
Authors: Bin Mohd Khairulzaim Ahmad Adzhar , Rahman Md Rezaur , Roslan Lidyana , Bin Bakri Muhammad Khusairy , Khan Afrasyab , Matin Mohammed Mahbubul
Published: August 2021

Dabai (Canarium odontophyllum) nutshells have considerable potential to be used as a viable precursor for biomass-based activated carbon. The material was carbonized at a temperature of 700 °C for 2 h, at a heating rate of 10 °C/min under nitrogen gas flow. The char was analyzed the following ways: percentage of yield, percentage of ash content, Fourier transform infrared spectroscopy, scanning electron microscopy with energy dispersive x-ray analysis, and Brunauer, Emmett, and Teller surface area. The char had a maximum Brunauer, Emmett, and Teller surface area of 428 m2/g and the nitrogen adsorption-desorption isotherm of the char that was similar to a Type I adsorption isotherm, based on IUPAC classifications. The char also had a high carbon content (up to 93.6%) and a low ash content (3.67%). Therefore, dabai nutshells were found to be a suitable lignocellulosic precursor for the synthesis of activated carbon.
Examination of wood adhesive bonds via MicroCT: The influence of pre-gluing surface machining treatments for southern pine, spotted gum, and Darwin stringybark timbers
Authors: Leggate William , Shirmohammadi Maryam , McGavin Robert L. , Outhwaite Andrew , Knackstedt Mark , Brookhouse Matthew
Published: August 2021

The successful manufacturing of glulam from several important Australian commercial timbers is quite challenging due to difficulties in gluing. Improvements in adhesive bond performance of spotted gum, Darwin stringybark, and southern pine timber have been achieved using alternative pre-gluing surface machining methods, e.g., face milling and sanding-post planing, when compared to conventional planing methods. In order to improve the understanding of the effects that different surface machining methods have on adhesive bond performance, this study used micro X-ray computed tomography and microscopy to assess key adhesive bond criteria. There was a considerable loss in the amount of adhesive after the wet and dry test cycles for all species. There was also an extremely high frequency of voids in the glue lines for all species, which would negatively impact bond strength and durability. Face mill prepared timber boards resulted in thicker glue lines and greater resistance to adhesion loss, compared to boards prepared via planing. For the two hardwood species, face milling also resulted in greater adhesive penetration; however, for southern pine, there were no significant differences in adhesive penetration between the three surface machining treatments. Adhesive penetration was much deeper in southern pine compared to spotted gum and Darwin stringybark.
Colgajo neurocutáneo safeno y recambio de espaciador de cemento en el manejo de una artroplastia de rodilla infectada con defecto de cobertura cutánea. Reporte de un caso
Authors: Dainotto Tamara , Viollaz Gonzalo , Del Sel Hernán , Lopreite Fernando Adrián
Published: August 2021

Los defectos de cobertura asociados a una infección de la prótesis son un desafío al cual nos enfrentamos los cirujanos ortopédicos en el posoperatorio de un reemplazo articular. El objetivo de este artículo es comunicar un caso de defecto de cobertura tratado con un colgajo neurocutáneo safeno por una artroplastia de rodilla infectada. Se recambió el espaciador y se cubrió el defecto tegumentario con colgajo neurocutáneo safeno en un mismo tiempo.

Conclusiones: El colgajo neurocutáneo safeno proporciona una adecuada cobertura en la cara anterior de la rodilla y permite tratar defectos tegumentarios asociados a una infección de la prótesis.
Estudio retrospectivo comparativo entre aspirina y dabigatrán en la incidencia de efectos tromboembólicos en pacientes con artroplastia de cadera y rodilla
Authors: Lopreite Fernando Adrián , Dainotto Tamara , Gaggiotti Stéfano , Del Sel Hernán
Published: August 2021

Objetivo: Analizar la incidencia de eventos tromboembólicos extrahospitalarios luego de un reemplazo total de rodilla o cadera primario en los primeros 90 días posoperatorios, utilizando como tromboprofilaxis ácido acetilsalicílico o dabigatrán. El objetivo secundario fue evaluar el costo de la terapia antiagregante y de la anticoagulante.
Materiales y Métodos: Se realizó un estudio observacional retrospectivo en el posoperatorio de reemplazos totales de cadera y rodilla primarios sobre la incidencia de eventos tromboembólicos extrahospitalarios, durante los primeros 90 días posteriores a la cirugía, en dos grupos. Se administró ácido acetilsalicílico (325 mg/día) o dabigatrán (150-220 mg/día) por 35 días.
Resultados: La serie incluyó a 224 pacientes (media de la edad 68.5 años), el 44,2% eran hombres. El 51,3% era un reemplazo total de cadera. El 64,3% continuó la tromboprofilaxis con dabigatrán y el 35,7%, con aspirina. La incidencia total de eventos tromboembólicos fue del 1,3%; 1,4% con dabigatrán y 1,3% con aspirina (p = 0,9). El costo de la tromboprofilaxis fue de USD 3,6 con aspirina 325 mg y USD 130 o 175 con dabigatrán, según la presentación de 75 y 110 mg.
Conclusiones: La aspirina como tromboprofilaxis tras un reemplazo total de cadera o rodilla en pacientes con bajo riesgo de sufrir eventos tromboembólicos ha logrado resultados clínicos similares a los del dabigatrán. Se puede recomendar un protocolo multimodal basado en el uso de aspirina. Este mejora el cumplimiento de la terapia antitrombótica por parte de los pacientes, debido al bajo costo de la profilaxis con aspirina.
Comparación de los espaciadores articulados vs. fijos en la revisión de la infección periprotésica de rodilla
Authors: Nicolino Tomás , Astoul Bonorino Juan , Molina Rómoli Agustín , Costantini Julián , Costa Paz Matías , Carbo Lisandro
Published: August 2021

Introducción: Los espaciadores de cemento con antibiótico pueden ser fijos o articulados y se logra un resultado similar con ambos para erradicar una infección. Nuestro objetivo fue comparar el rango de movilidad articular y los resultados funcionales después del reimplante.

Materiales y Métodos: Estudio de cohorte retrospectiva de pacientes sometidos a una revisión de la prótesis de rodilla por infección, en dos tiempos quirúrgicos. Se analizó la funcionalidad según el Knee Society Score (KSS) al año de la cirugía y se registró el rango de movilidad a los 45 días. Se registraron el grado de defecto óseo, dolor, satisfacción, las complicaciones y la recidiva de la infección.

Resultados: Se incluyeron 103 pacientes (40 con espaciador articulado, 63 con espaciador fijo). El grupo con espaciador articulado tuvo una mediana 2,5° mayor en la movilidad final (102,5; RIC 95-110 vs. 100;RIC 90-105, p 0,01). Según el KSS funcional y el KSS de rodilla, no hubo diferencias entre ambos grupos. No hubo diferencias en el grado de satisfacción, dolor y el tiempo hasta el reimplante. Las complicaciones fueron similares en ambos grupos, con una tasa de reinfección sin diferencias estadísticamente significativas.

Conclusión: Los espaciadores articulados proporcionaron un beneficio en el rango de movilidad después del reimplante de la prótesis.
Mukařovský, Jan. Signo, función y valor: estética y semiótica del arte de Jan Mukarovsky
Authors: Díaz Jorge Aurelio
Published: August 2021

El Centro Editorial de la Facultad de Ciencias Humanas de la Universidad Nacional de Colombia ha publicado una segunda edición de esta importante se- lección de escritos del gran semiólogo checo Jan Mukařovský, cuya primera edición hacía unos años que se hallaba agotada.
La clase virtual. Notas para una fenomenología de la presencia
Authors: Ávila Cañamares Ignacio
Published: August 2021

Este ensayo presenta una reflexión sobre las limitaciones del medio digital para la enseñanza de disciplinas teóricas como la filosofía. Se quiere contrarrestar, hasta cierto punto, el entusiasmo prematuro que despierta la virtualidad en algunos estamentos universitarios. El texto se nutre de mi experiencia pedagógica en la pandemia y traza una mirada fenomenológica sobre lo que implica la pérdida del entorno de la presencia para la enseñanza filosófica. Al reflexionar sobre dicha pérdida, el ensayo también esboza algunas reflexiones dispersas sobre lo que significa aprender y enseñar filosofía.
Experiências midiatizadas de escuta
Authors: Gambaro Daniel
Published: August 2021

Este artigo apresenta o conceito de “experiências midiatizadas de escuta”, isto é, as vivências e ações dos indivíduos relacionadas ao consumo de produções sonoras em diferentes meios, como o rádio hertziano, streaming musical e podcasts. A partir dessa descrição, o rádio é avaliado como uma entre várias experiências disponíveis no ecossistema midiático contemporâneo, impactado pelos processos de midiatização profunda que transformam as relações entre pessoas e mídias. O consumo midiático via sistemas na internet, amparado na geração e gestão de dados dos usuários, se tornou processo interacional de referência. Assim, as mídias ocupam espaço singular na construção da realidade. Ao focarmos a “experiência”, abrem-se novas possibilidades de compreensão da mídia sonora. Portanto, torna-se relevante observar como a indústria radiofônica está se adaptando ao novo contexto. Para isso, são apresentados resultados de uma pesquisa recente, conduzida em três diferentes regiões brasileiras. Conclui-se que, apesar de relevantes, os investimentos na experiência do ouvinte ainda são limitados.
Negociações semânticas na conformação de discursos sobre diversidade e diferença no jornalismo brasileiro de referência
Authors: Scabin Nara Lya Cabral
Published: August 2021

O artigo propõe a análise do discurso de reportagens que visibilizam minorias de gênero e sexuais publicadas em três jornais de referência brasileiros (O Estado de S. Paulo, O Globo e Folha de S.Paulo) entre 1978 e 2018. A pesquisa busca identificar regularidades e deslocamentos semânticos em diferentes planos discursivos a fim de compreender como o campo jornalístico responde a tensionamentos enunciativos decorrentes de rearticulações amplas no universo discursivo. Como principais resultados, o trabalho discute a conformação de um discurso jornalístico articulado em torno de um princípio semântico da “diferença” na década de 2010 e sugere possibilidades metodológicas ao estudo de processos de gênese discursiva no campo do jornalismo.
Apresentação do Dossiê
Authors: Hashizume Cristina Miyuki , Tavares Sergio Marcus Nogueira
Published: August 2021

A proposta do dossiê “Educação e Direitos Humanos” é problematizar o ativismo dos Direitos Humanos neste difícil momento para o Brasil e o mundo. Propomos problematizar tal fenômeno a partir dos discursos de ódio direcionados a instituições e movimentos democraticamente consolidados nos últimos 30 anos. Os artigos aqui apresentados trarão questões relativas às práticas de intolerância que se somam ao excesso de judicialização, sob um suposto discurso de “neutralidade” e garantia de direitos.
Educação em Tempo de Pandemia e a desigualdade social: Considerações do ensino remoto no Estado do Paraná.
Authors: Castro Solange De , Rossetto Elisabeth
Published: August 2021

Resumo:       A pandemia originada pela COVID-19 novo agente do Coronavírus (SARS-CoV-2), desencadeou em 2020 alterações no modo de realização das atividades escolares. Considerando as particularidades dessa realidade, o objetivo deste estudo é discutir a implementação do ensino remoto no Estado do Paraná. Trata-se de um estudo teórico e documental amparando-se no Ofício 040/2020 DEDUC/SEED que rege o planejamento das avaliações escolares. Os resultados apontam que com a implementação do ensino remoto tem-se agravado a desigualdade social, pois nem todos têm acesso aos meios utilizados, e o papel do professor adquiriu outro contorno em que o processo ensino aprendizagem tem se dado de maneira fragmentada e isolada, apresentando-se maior valorização dos aspectos quantitativos e minimizando a importância do conhecimento.Palavras-chave: Ensino Remoto. COVID 19. Desigualdade Social. Conhecimento.
Asymptotics of the Spectrum of a Periodic Boundary ValueProblem for an Odd-Order Differential Operator
Authors:   Moscow State University of M.V. Lomonosov, Mitrokhin Sergey
Published: August 2021

The spectrum of a differential operator of high odd order with periodic boundary conditions is studied. The asymptotics of the fundamental system of solutions of the differential equation defining the operator are obtained by the method of successive Picard approximations. With the help of this fundamental system of solutions the periodic boundary conditions are studied. As a result, the equation for the eigenvalues of the differential operator under study is obtained, which is a quasi-polynomial. The indicator diagram of this equation, which is a regular polygon, is investigated. In each of the sectors of the complex plane, defined by the indicator diagram, the asymptotics of the eigenvalues of the operator under study is found. An equation for the eigenvalues of the differential operator under study is derived. The indicator diagram of this equation has been studied. The asymptotics of the eigenvalues of the studied operator in different sectors of the indicator diagram is found.
Local Two-Dimensional Splitting Schemes for 3D Suspended Matter Transport Problem Parallel Solution
Authors:   Don State Technical University, Sukhinov Alexander , Chistyakov Alexander ,   Don State Technical University, Sidoryakina Valentina ,   Don State Technical University, Protsenko Sofya ,   Don State Technical University, Atayan Asya ,   Don State Technical University
Published: August 2021

A 3D model of suspended matter transport in coastal marine systems is considered, which takes into account many factors, including the hydraulic size or the rate of particle deposition, the propagation of suspended matter, sedimentation, the intensity of distribution of suspended matter sources, etc. The difference operators of diffusion transport in the horizontal and vertical directions for this problem have significantly different characteristic spatiotemporal scales of processes, as well as spectra. With typical sampling, applied to shallow-water systems in the South of Russia (the Sea of Azov, the Tsimlyansk reservoir), the steps in horizontal directions are 200-1000 meters, the coefficients of turbulent exchange (turbulent diffusion) are (103-104) m2/sec; in the vertical direction - - - steps of 0.1 m-1 m, and the coefficients of microturbulent exchange in the vertical — (0.1-1) m2/sec. If we focus on the use of explicit locally twodimensional - - - locally one-dimensional splitting schemes, then the permissible values of the time step for a two-dimensional problem will be about 10-100 seconds, and for a one-dimensional problem in the vertical direction - - - 0.1 – 1 sec. This motivates us to construct an additive locally-two-dimensional-locallyonedimensional splitting scheme in geometric directions. The paper describes a parallel algorithm that uses both explicit and implicit schemes to approximate the two-dimensional diffusion-convection problem in horizontal directions and the one-dimensional diffusion-convection problem in the vertical direction. The two-dimensional implicit diffusion-convection problem in horizontal directions is numerically solved by the adaptive alternating-triangular method. The numerical implementation of the one-dimensional diffusion-convection problem in the vertical direction is carried out by a sequential run-through method for a series of independent one-dimensional three-point problems in the vertical direction on a given layer. To increase the efficiency of parallel calculations, the decomposition of the calculated spatial grid and all grid data in one or two spatial directions - in horizontal directions-is also performed. The obtained algorithms are compared taking into account the permissible values of time steps and the actual time spent on performing calculations and exchanging information on each time layer.
Methods of Dissociative Electron Capture Spectroscopy and Density Functional Theory for Modeling the Biological Activity of Quinoxalin Derivatives
Authors:   UFRC RAS, Tayupov Mansaf , Rakhmeev Rustam ,   UFRC RAS, Markova Angelina ,   UFRC RAS, Safronov Aleksey ,   UFRC RAS
Published: August 2021

The molecules of 2-methylquinoxalin and 2,3-dimethylquinoxalin were studied by mass spectrometry of negative ions of resonant capture of slow (0-15 eV) electrons. These compounds have antimicrobial, antifungal, bactericidal and preservative properties, and are widely used in medicine and the food industry. The average lifetime of molecular negative ions (NI)relative to electron auto-cleavage is measured experimentally. The most probable structures of fragment ions ([M – H]–, formed during the decay of molecular NI, are revealed. Within the framework of the Arrhenius approximation, the value of the adiabatic electron affinity (EAa) was estimated. It is found that the theoretical values of EAa calculated by the B3LYP/6-31+G(d) method with minimal addition of diffuse functions as the difference between the total energies of the neutral molecule and the radical anion correlate with the values of EAa obtained from the experiment.
Barriers to Doctoral Degree Attainment: Problems of the Period after Postgraduate Studies
Authors: Bednyi B. I. , Voronin G. L. , Mironos A. A. , Rybakov N. V.
Published: August 2021

Increasing the effectiveness of postgraduate programs is now becoming one of the most important issues in ensuring the economic development of the state. As a rule, Russian postgraduate students, who are aimed at getting an academic degree, fail to defend their theses during their postgraduate studies, and they need additional time to complete their work. The purpose of this research article is to identify and analyze the key problems faced by Russian postgraduates seeking to submit their dissertations for defense. Our investigation comes to be original in two aspects. First, in contrast to other empirical studies of postgraduate school, the authors’ attention is focused on the barriers to attaining a degree, which arise not in the course of study, but after graduation. Second, the analysis is based on interviewing those graduates who have successfully overcome these barriers and defended their PhD theses. The empirical base of the study is online questionnaire surveys of Russian PhDs (Candidates of Science) who have recently completed their postgraduate studies, as well as administrative and managerial workers responsible for postgraduate students’ training and certification. The quantitative data obtained indicate that the presence or absence of a dissertation council in an organization wherein postgraduate students are trained is one of the key factors determining the pace and effectiveness of the postgraduates’ proceeding to an academic degree. In general, the results of the study make it possible to conclude that the difficulties at the final stage of preparing a dissertation are largely due to the imperfection of the mechanism for pairing the systems of state scientific certification and scientific and pedagogical personnel postgraduate training. Thus, we discuss possible organizational and managerial decisions of how to bring these systems closer and improve the performance of postgraduate studies. This paper might be of interest for higher education researchers, as well as for scientific, pedagogical and administrative workers involved in the management of personnel training and higher scientific qualifications certification.
Universities’ Training Programs Congruence to the Needs of the Regional Labour Market: Sectoral Analysis
Authors: Firsova A. A. , Preobrazhenskiy Yu.  V.
Published: August 2021

The authors of this article are carrying out the analysis of the students’ training programs congruence to the sectoral structure of employment in 84 Russian regions using the sectoral model concept and the index of structural differences. The paper presents a methodological approach to assessing the congruence of training programs with the needs of the regional labor market in Russia. The level of regional higher education systems differentiation, the sectoral structure of graduates, and the level of their employment in the regional context were determined applying economic and statistical methods. The ratio of the graduates’ supply to their demand analyzed, there is presented a classification of regions according to the levels of this ration, conclusions drawn on the balance of higher education systems in the regions, taking into account the needs for training. A structural and professional disproportion between regional labor markets and regional systems of higher education in most regions of Russia is diagnosed, as well as a number of imbalances concerning specialists’ training in the secondary sector of the economy, which is decisive for the development of high-tech in dustries and provides the need for personnel within the new digital economy. The directions for overcoming dysfunction of the relationship between universities and the labor market are identified. The results of the study make it possible to make decisions on improving the policy of distributing the planned contingent of students by training programs in accordance with the needs of regional economies.
Studying Higher Education Internationalization: New Methods and Approaches
Authors: Xu Hong , Zhang Jiahui
Published: August 2021

This research paper studies trends and hotspots of management internationalization in the sphere of higher education. The survey is based on CiteSpace visualization technology and on the corpus approach to studying keywords and annotations for 2010–2021 publications in 25 major higher education journals. Keywords analysis by CiteSpace showed that the hotspots of the management internationalization research are focused on postgraduate education management, on the projects «Double First Class University Plan», «Greater Bay Area», «Cooperation in Running Schools», etc. The future possible areas of investigation are the «local internationalization» of university management, the internationa lization of management in terms of international-level specialties and first-class universities’ nationalization, as well as the contradiction of the «spillover effect» between university management and cross-university cooperation. The corpus-based analysis showed that over the past 12 years the studies of internationalization of higher education and its mana gement have been carried out within the large-scale project «One Belt – One Road» and economic globalization. These studies include the modules of universities’ development, university education, academic research, school management strategy, etc. To effectively address the challenges faced by higher education internationalization management, the aut hors propose to take advantage of consistent teaching quality and to leverage regional and local resources, so as to create a multidimensional platform that would interconnect talents and ways to use them. Of no less importance, when summarizing such experience, is it to take into account the historical background, so that this platform, certainly engaging state policy, would allow a reform of higher education globalization for its further development.
An API in JAVA Which Render Ease at Programming for Developers
Authors: Agarwal Bhuvan , Bhattacharjee Soumyajeet , Kar Sima , Saha Madhurima , Kumar Vijay , Mandal Sandip , Kolkata UEM
Published: August 2021

Abstract – Based on the concept of Application programming interface (API).This project comprises of a package named "algokit" which contains several algorithms based on the category of searching, sorting, dynamic programming, tree traversals and swapping.
Keeping in mind that different algorithms from the same category have its own benefit in time and space complexity, This project covers almost all the algorithms known and available from each category. This would give the user several options to choose the right algorithm for its code.An user
just requires to import the package named AlgoKit and call the functions inside it for a smooth programming experience. One of the prime objectives of this project is to build a kit that serves the purpose of reducing the number of lines of code and also reduce the time taken to run the same
code elsewhere. It is platform independent and can be used in any open source Java development environment.