bluuebunny/crossref_metadata_2025 huggingface dataset:
Prevalencia de especies zoonóticas de Arcobacter en cerdos a nivel de matadero en Ecuador
Authors: Rosa Janneth Simaluiza-Masabanda  , Jimmy Fernández-Cajamarca  , Heriberto Fernandez J
Published: June 2020

Objetivo. Determinar la prevalencia, diversidad y resistencia antimicrobiana de las especies zoonóticas de Arcobacter en cerdos sanos, a nivel de matadero. Materiales y métodos. Fueron recolectadas, mediante muestreo no probabilístico por conveniencia, 50 muestras fecales obtenidas por hisopado rectal de cerdos sanos a nivel de matadero. El aislamiento de las cepas de Arcobacter fue realizado por métodos microbiológicos y la identificación de especie, utilizando pruebas bioquímicas y moleculares (multiplex PCR). El comportamiento antimicrobiano fue determinado por el método de disco difusión. Resultados. Fueron aisladas las cuatro especies zoonóticas cuyas frecuencias de aislamiento fueron: A. thereius (18.0%), A. skirrowii (18.0%), A. cryaerophilus (6.0%) and A. butzleri (2.0%). Se encontró alta resistencia a ciprofloxacina y en las cuatro especies fueron aisladas cepas multirresistentes.
The Role of Health Technology and Informatics in a Global Public Health Emergency: Practices and Implications From the COVID-19 Pandemic
Authors: Ye Jiancheng
Published: June 2020

At present, the coronavirus disease (COVID-19) is spreading around the world. It is a critical and important task to take thorough efforts to prevent and control the pandemic. Compared with severe acute respiratory syndrome and Middle East Respiratory Syndrome, COVID-19 spreads more rapidly owing to increased globalization, a longer incubation period, and unobvious symptoms. As the coronavirus has the characteristics of strong transmission and weak lethality, and since the large-scale increase of infected people may overwhelm health care systems, efforts are needed to treat critical patients, track and manage the health status of residents, and isolate suspected patients. The application of emerging health technologies and digital practices in health care, such as artificial intelligence, telemedicine or telehealth, mobile health, big data, 5G, and the Internet of Things, have become powerful “weapons” to fight against the pandemic and provide strong support in pandemic prevention and control. Applications and evaluations of all of these technologies, practices, and health delivery services are highlighted in this study.
Exploring the Role of Media Sources on COVID-19–Related Discrimination Experiences and Concerns Among Asian People in the United States: Cross-Sectional Survey Study (Preprint)
Authors: Yu Nan , Pan Shuya , Yang Chia-chen , Tsai Jiun-Yi
Published: June 2020

BACKGROUND

Media coverage and scholarly research have reported that Asian people who reside in the United States have been the targets of racially motivated incidents during the COVID-19 pandemic.

OBJECTIVE

This study aimed to examine the types of discrimination and worries experienced by Asians and Asian Americans living in the United States during the pandemic, as well as factors that were associated with everyday discrimination experience and concerns about future discrimination that the Asian community may face.

METHODS

A cross-sectional online survey was conducted. A total of 235 people who identified themselves as Asian or Asian American and resided in the United States completed the questionnaire.

RESULTS

Our study suggested that up to a third of Asians surveyed had experienced some type of discrimination. Pooling the responses “very often,” “often,” and “sometimes,” the percentages for each experienced discrimination type ranged between 14%-34%. In total, 49%-58% of respondents expressed concerns about discrimination in the future. The most frequently experienced discrimination types, as indicated by responses “very often” and “often,” were “people act as if they think you are dangerous” (25/235, 11%) and “being treated with less courtesy or respect” (24/235, 10%). About 14% (32/235) of individuals reported very often, often, or sometimes being threatened or harassed. In addition, social media use was significantly associated with a higher likelihood of experiencing discrimination (β=.18, P=.01) and having concerns about future episodes of discrimination the community may face (β=.20, P=.005). Use of print media was also positively associated with experiencing discrimination (β=.31, P<.001).

CONCLUSIONS

Our study provided important empirical evidence regarding the various types of discrimination Asians residing in the United States experienced or worried about during the COVID-19 pandemic. The relationship between media sources and the perception of racial biases in this group was also identified. We noted the role of social media in reinforcing the perception of discrimination experience and concerns about future discrimination among Asians during this outbreak. Our results indicate several practical implications for public health agencies. To reduce discrimination against Asians during the pandemic, official sources and public health professionals should be cognizant of the possible impacts of stigmatizing cues in media reports on activating racial biases. Furthermore, Asians or Asian Americans could also be informed that using social media to obtain COVID-19 information is associated with an increase in concerns about future discrimination, and thus they may consider approaching this media source with caution.
Preventing and Addressing the Stress Reactions of Health Care Workers Caring for Patients With COVID-19: Development of a Digital Platform (Be + Against COVID) (Preprint)
Authors: Mira José Joaquín , Vicente María Asunción , Lopez-Pineda Adriana , Carrillo Irene , Guilabert Mercedes , Fernández César , Pérez-Jover Virtudes , Martin Delgado Jimmy , Pérez-Pérez Pastora , Cobos Vargas Angel , Astier-Peña María Pilar , Martínez-García Olga Beatriz , Marco-Gómez Bárbara , Abad Bouzán Cristina
Published: June 2020

BACKGROUND

COVID-19 became a major public health concern in March 2020. Due to the high rate of hospitalizations for COVID-19 in a short time, health care workers and other involved staff are subjected to a large workload and high emotional distress.

OBJECTIVE

The objective of this study is to develop a digital tool to provide support resources that might prevent and consider acute stress reactions in health care workers and other support staff due to the COVID-19 pandemic.

METHODS

The contents of the digital platform were created through an evidence-based review and consensus conference. The website was built using the Google Blogger tool. The Android version of the app was developed in the Java and XML languages using Android Studio version 3.6, and the iOS version was developed in the Swift language using Xcode version 11.5. The app was evaluated externally by the Andalusian Agency for Healthcare Quality.

RESULTS

We detected the needs and pressing situations of frontline health care workers, and then, we proposed a serial of recommendations and support resources to address them. These resources were redesigned using the feedback received. A website in three different languages (Spanish, English, and Portuguese) and a mobile app were developed with these contents, and the AppSaludable Quality Seal was granted to the app. A specific self-report scale to measure acute stress and additional tools were included to support the health care workforce. This instrument has been used in several Latin American countries and has been adapted considering cultural differences. The resources section of the website was the most visited with 18,516 out of 68,913 (26.9%) visits, and the “Self-Report Acute Stress Scale” was the most visited resource with 6468 out of 18,516 (34.9%) visits.

CONCLUSIONS

The Be + against COVID platform (website and app) was developed and launched to offer a pool of recommendations and support resources, which were specifically designed to protect the psychological well-being and the work morale of health care workers. This is an original initiative different from the usual psychological assistance hotlines.
Compassion pada Pengasuhan Anak dengan Autism Spectrum Disorder
Authors: Desiningrum Dinie Ratri , Suhariadi Fendy , Suminar Dewi Retno
Published: June 2020

Compassion adalah berbelas kasih terhadap penderitaan orang lain dan ditindaklanjuti dengan menolongnya. Compassion penting dalam kehidupan manusia, dan diterapkan di berbagai lapisan masyarakat. Dalam ranah keluarga, compassion dapat menstimulasi kesejahteraan individu dan keluarga. Penelitian terbaru belum banyak yang mengkaji compassion dalam konteks pengasuhan anak, khususnya anak dengan autism spectrum disorder. Tujuan dari studi hasil pemikiran ini adalah mencoba menggambarkan compassion, yaitu dalam hal ontologi dan penelitian-penelitian yang berkaitan dengan compassion khususnya compassion pada pengasuhan anak, dan lebih khusus lagi adalah compassion pada pengasuhan anak dengan autism spectrum disorder. Metode yang digunakan adalah studi literatur. Hasil studi ini menemukan pemahaman compassion secara komprehensif, dan menemukan konsep compassion dalam pengasuhan anak dengan autism spectrum disorder. Hasil penelitian bisa menjadi dasar konsep yang digunakan oleh peneliti lain yang berminat dalam ranah studi yang sama, yaitu untuk pengembangan studi lebih lanjut terkait pengasuhan anak berkebutuhan khusus, sehingga bisa bermanfaat bagi masyarakat.
Creating Legal Facts: Indigenous People versus State Plantation Companies in Medan, Indonesia
Authors: Wina Khairina  , Christian Lund
Published: June 2020

This paper examines how a local community has tried to legalise its possession of land in the outskirts of the city of Medan, Indonesia. In the absence of accessible legal pathways and in the face of state and gang violence, the community has resorted to an imaginative mimicry of legal land access procedures. This paper argues that law-making does not exclusively originate from the state, but also from society, and as such the community has effectively created legal facts. Data were collected through interviews and long-term contact with the community.
Right-to-water Alliances in Indonesia and Two Critical Disjunctions
Authors: Wijanto Hadipuro  , Prathiwi Widyatmi Putri
Published: June 2020

Discourses on the right to water have shaped the opposition movement against Indonesia's market-oriented approach. We document how global debate against the privatisation of water has influenced discourses in this sector since 1998, and how activists have utilised such discourses in the context of national and provincial water policy. Our observations and analyses are centred on the decision of the Indonesian Constitutional Court February 2015 to annul the 2004 Law on Water Resources (UU No 7 Tahun 2004 tentang Sumber Daya Air), the legal umbrella under which private water concessions were sanctioned. We seek to understand discourse formations before and after the decision that helped end Indonesia's partial water privatisation. By deploying a textual-oriented discourse analysis of the pros and cons of the right-to-water and market-oriented approaches, this article examines the trajectory of Indonesian social movements opposed to water privatisation. It draws on leading Indonesian newspapers, grey literature—works produced outside academic and commercial publishing—and scientific publications. This article shows that there are limits to the use of the right-to-water discourse among activists, resulting in two critical disjunctions. First, an excessive focus on normative struggles against the privatisation of piped-water services has hindered more progressive, community-oriented responses to market-oriented water policies. Second, social movements in this sector have been disconnected from more recent global agendas for just water governance.
FLORA SINÁNTROPA E INCIDENCIA DE PLANTAS INVASORAS EN EL ENCINAR DE MANUEL LAZO, PINAR DEL RÍO, CUBA
Authors: Izquierdo Medero Katiuska , Márquez Lam Carlos Abel , Pimentel Chirino Armando , Oviedo Prieto Ramona
Published: June 2020

It was determined the behavior of the species considered sinantropic and were compared with
the list of this kind of species published in Cuba, determining the presence of 83 sinantropic
species in the area that represents 70.3% of the oak´s forest flora. The families better represented
are Asteraceae with seven species, followed by Fabaceae and Malvaceae (6), and Caesalpinaceae
with five. The 61.9% of the sinantropic species are native (apophytes) while 38.09% are aliens
plants. The total of the species are situated in 13 artificial taxonomic unities with prevalence of
the secondary extrapophytes with 25 species. Also there are 15 invasive plants that represent
45.45% of the alien flora.
ESTRUCTURA DE TALLAS DE MACROBRACHIUM TENELLUM (DECAPODA: PALAEMONIDAE) EN EL ESTERO EL SALADO, PUERTO VALLARTA, JALISCO, MÉXICO
Authors: JÁUREGUI-VELÁZQUEZ ERICK EMMANUEL , BÁRCENAS-GUTIÉRREZ SANDRA QUETZALLI
Published: June 2020

Los langostinos de la familia Palaemonidae Rafinesque ,1815 son el grupo más diverso del orden de los decápodos; muestran una amplia distribución geográfica y batimétrica, varias especies son consideradas de valor económico. En México  existen vacíos de información respecto a la población de M. tenellum Smith, 1871, la influencia de la estacionalidad y factores abióticos como la temperatura y salinidad, además de otros procesos ecológicos. Cinco muestreos fueron realizados entre agosto de 2013 y julio de 2014; mayo de 2014 fue el mes más abundante con 246 individuos registrados; mientras que febrero de 2014 fue el mes con menos individuos registrados. Etapas post-larvales fueron las más numerosas durante todo el año, los adultos maduros fueron los más escasos. En el estero El Salado, individuos de M. tenellum no alcanzaron tallas comerciales, los machos alcanzaron mayor longitud total y peso promedio. Se encontró que el número de organismos está influenciado por la temperatura y la precipitación pluvial.
DIETA ESTACIONAL DEL COYOTE (CANIS LATRANS) EN EL PARQUE ESTATAL SIERRA DE TEPOTZOTLÁN, ESTADO DE MÉXICO
Authors: ESPINOSA-GRACIANO EDSON MARIO , GARCÍA-COLLAZO RODOLFO
Published: June 2020

This study describes the seasonal variation of Canis latrans diet, through scats analysis, in Sierra de Tepotzotlán state Park. The area includes oak forest, crassicaule thicket, grasslands and deciduous sclerophyllous scrub. A total 53 scats were collected in the 2008-2009 period. With the weight of each prey and frequency of occurrence, the value food importance of each food item was calculated for the dry and rainy season. The coyote behaved like an opportunist-generalist, consumed a total of 19 prey items; the main groups used were: mammals, insects, vegetables, birds, reptiles and anthropogenic wastes. The most important prey in the dry season were the insects Acrididae, the mammal Sciurus aureogaster and fruits of Opuntia estreptocantha. While, for the rainy season was the rabbit Sylvilagus floridanus, followed by birds and insects Scarabeidae. The similarity of the diet between both seasons was low, reflecting the seasonal variation in the abundance and availability of the prey. The consumption of farm birds and food waste, may have negative effects on the health and coyote survival by conflict with the human.
CHIROSTOMA (MENIDIA): ECOLOGÍA Y UTILIZACIÓN COMO ESPECIE DE CULTIVO EN ESTANQUES RÚSTICOS
Authors: Navarrete Salgado Norma Angélica
Published: June 2020

El género Chirostoma (Menidia) incluye a los charales y pescado blanco, pertenece a la Familia Atherinopsidae. El género es endémico de la República Mexicana, incluye 25 especies. El género habita en aguas dulces de México, aunque su origen es marino. Al no encontrarse diferencias entre Chirostoma y Poblana, estos han sido incluidos en el género Menidia. No obstante, en este escrito se utilizaron los nombres de los géneros Chirostoma y Menidia, respetando los artículos originales de los diferentes autores.
FIRST HOST PLANT RECORD FOR ANASTREPHA AMPLIATA HERNÁNDEZ-ORTIZ, 1990 (DIPTERA: TEPHRITIDAE)
Authors: García Ramírez María De Jesús , Antonio Hernández Enrique , Vargas Magaña Juan José , Valencia Gutiérrez Marvel Del Carmen , Chi Ruiz Juan Carlos , Placensia Valerio Yamilé
Published: June 2020

The fruit flies of the Tephritidae family, represent one of the most important agricultural pests in the world, besides causing a great economic impact due to losses in a great diversity of fruits and other vegetables limit the development of agriculture in many countries and are the direct cause of a considerable number of quarantines and restrictions imposed by the importing countries, causing a detriment in the economy of fruits producing countries. However, in Mexico the knowledge of its hosts is generally restricted to Anastrepha species of economic importance, while studies on the relationship of other species of this genus with their host plants are poorly understood.
IMPACTO DEL USO DE LA TIERRA EN LA CALIDAD DEL SUELO EN UNA ZONA SEMIÁRIDA DEL VALLE DEL MEZQUITAL, HIDALGO, MÉXICO
Authors: Hernández-González Denisse Esmeralda , Muñoz-Iniestra Daniel Jesús , López-Galindo Francisco , Hernández-Moreno Mayra Mónica
Published: June 2020

El cambio en el uso de la tierra por lo general implica daños ecológicos y ambientales, dentro de los que destaca por su magnitud la degradación del suelo, lo que hace que la calidad del suelo disminuya afectando con esto los procesos y funciones que el suelo hace. El objetivo del estudio fue determinar el impacto de diferentes cubiertas y usos de la tierra sobre la calidad del suelo en una localidad del Valle Mezquital, en el Estado de Hidalgo, donde se seleccionaron cinco sitios con diferente cobertura dentro de la misma unidad geomorfológica. Se tomaron tres muestras de suelo superficial donde se midieron 10 propiedades. Con los datos obtenidos se calcularon dos índices de calidad del suelo. Los resultados obtenidos muestran una tendencia similar para todos los sitios en los dos modelos utilizados. El suelo de la pradera fue donde se obtuvo el mayor valor de calidad seguido por la parcela agrícola, mientras que el suelo desnudo y el matorral abierto fueron los de menor calidad. Las propiedades más vinculadas con la calidad de los suelos fueron: materia orgánica, nitrógeno total, infiltración, estabilidad de agregados, conductividad eléctrica y sodio intercambiable.
From Top-Down Control to Self-Organisation: The “Thaw” and Motor Action Theory
Authors: Sirotkina Irina
Published: June 2020

The period from the late 1950s to the mid-1960s in the Soviet Union was known as the “Thaw,” a political era that fostered hopes of restoring the rule of law and democracy to the country. In that period cybernetics came to symbolize both scientific progress and social change. The Soviet intelligentsia had survived the hardship of Stalinist repression and now regarded the new discipline, which brought together the natural sciences and the human sciences, as a pathway to building a freer and more equal society. After decades of domination by Pavlovian doctrine, a paradigm shift was under way in physiology and psychology. Cybernetics reinforced the new paradigm, which put forward ideas of purposive behavior and self-organization in living and non-living systems. The conditioned reflex and a simplistic one-to-one view of connections in the nervous system gave way to more sophisticated and complex models, which could be formalized mathematically. Previous models of control in living organisms were mostly hierarchical and included top-down control of peripheral movement by the motor centers. The new models supplemented this picture with feedback commands from the periphery to the center. By the time cybernetics had made its appearance in the Soviet Union, new models of control had already been formulated in physiology by Nikolay Bernstein (1896– 1966). He termed the feedback from afferent signals “sensorial corrections,” meaning that they play an important part in adapting central control to the changing situation at the periphery of movement. The new paradigm emphasized horizontal connections over vertical ones, and new models took hold based on less “totalitarian” and more “democratic” principles, such as the idea of automatic or autonomous functioning of intermediate centers, the mathematical concept of well-organized functions, the theory of “the collective behavior of automata,” etc. This line of research was carried out in the USSR as well as abroad by Bernstein’s students and followers who formed the Moscow School of Motor Control. The author argues that this preference for less hierarchical models was one expression of the Thaw’s trend toward liberalization of life within the USSR and greater involvement in international politics.
“Mathematical Paradise”: The Parallel Social Infrastructure of Post-war Soviet Mathematics
Authors: Gerovitch Vyacheslav
Published: June 2020

This article examines the response of the Soviet mathematical community to the geographical restrictions, physical barriers, political and administrative pressures, and conceptual constraints that they faced from the 1950s through the 1980s. Many talented mathematicians with “undesirable” ethnic or political backgrounds encountered discrimination in admission to universities, employment, travel to conferences abroad, etc. The mathematical community in response created a parallel social infrastructure, which attracted young talent and provided support and motivation for researchers excluded from official institutions. That infrastructure included a network of study groups (“math circles”), correspondence courses, math competitions, specialized mathematical schools, free evening courses for students barred from top universities, pure math departments within applied mathematics institutions, and a network of open research seminars. A community emerged in which mathematics became a way of life, work and leisure converged, and research activity migrated from restrictive official institutions to the private spaces of family apartments or dachas. In the informal community of Soviet mathematicians, a specific “moral economy” operated, which relied on a network of friendly connections and on an exchange of favors. The various external constraints further strengthened personal ties, encouraged mutual help, and fostered close friendships in the community. Although excluded from elite privileges, the “parallel world” of Soviet mathematics cultivated an ethos of noble rejection of career ambitions, material rewards and official recognition in order to pursue the highest ideals of mathematical truth. This way of life, which opposed the bureaucratic spirit of official institutions, was often perceived by its participants as a “mathematical paradise.”
Autoeficacia y su relación con el rendimiento académico en estudiantes de enseñanza de la matemática
Authors: Zamora-Araya José Andrey , Cruz-Quesada Jesús Daniel , Amador-Montes Marlon Steven
Published: June 2020

En el ámbito de la investigación educativa el constructo de autoeficacia, enmarcada dentro de la teoría social cognoscitiva, ha sido estudiado para dar respuesta al bajo rendimiento académico. Por ello, la investigación pretende analizar de qué manera se relaciona las fuentes de autoeficacia matemática con el rendimiento académico en matemáticas (RAM), en los estudiantes de la carrera de bachillerato y licenciatura en la Enseñanza de la Matemática (BLEM) de la Universidad Nacional, Costa Rica (UNA). Participaron 92 estudiantes de I, II y III nivel del BLEM a quienes se les aplicó la escala de fuentes de autoeficacia matemática (EFAM), adaptada al español por Zalazar, Aparicio, Ramírez y Garrido (2011). El estudio es correlacional y se utilizó la técnica de regresión múltiple para determinar la correlación entre el RAM y las fuentes del constructo, utilizando como covariables, sexo, la tenencia de beca, nivel educativo de los padres, elección de carrera, nivel de carrera y el hecho de haber reprobado. Los resultados evidencian la relevancia de la experiencia directa (p<0,050) como predictor en el RAM; así como el hecho de haber reprobado (p<0,001). Las demás variables poseen importancia práctica, exceptuando la persuasión verbal. En definitiva, se reafirma la importancia de la autoeficacia matemática en el RAM.
Formación inicial docente de la carrera Educación Comercial: aportes desde la Educación Superior Universitaria Costarricense
Authors: Hernández-Chaves Carolina , Corrales-Escalante Xinia
Published: June 2020

En las últimas cinco décadas Costa Rica ha evidenciado un interés especial en la Educación Técnica y la Formación Profesional, especialmente en la modalidad Comercial y Servicios, lo que ha generado la necesidad de establecer acciones estratégicas para responder a los nuevos retos y oportunidades de un mundo cambiante en los ámbitos económico, social, cultural, ambiental y tecnológico. Desde la Escuela de Secretariado Profesional de la Universidad Nacional, se ha dado respuesta a la creciente demanda de profesorado de calidad para ocupar diversos puestos en el Ministerio de Educación, con personas graduadas de la carrera de Educación Comercial, específicamente para impartir las especialidades de Secretariado Ejecutivo, Secretariado Ejecutivo Bilingüe y Ejecutivo para Centros de Servicio en los colegios de las ramas técnicas y académicas.
Investigación-acción, aula invertida y formación basada en competencias. Elementos clave para una efectiva formación b-learning en liderazgo directivo
Authors: Romero-Alonso Rosita , Montt-Fabres Blanca , Maregatti-Solano Claudio , Gracia-Romero María Elena , Segura-Ángel Daniel
Published: June 2020

Frente al desafío de contar con enfoques formativos para docentes y directivos en ejercicio que atiendan las complejidades del fenómeno educativo, es necesario evidenciar la efectividad de diversas metodologías formativas. El artículo describe los resultados de una investigación cuyo objetivo fue determinar la efectividad de un curso en liderazgo para la innovación y cambio en las instituciones escolares, orientado a docentes y directivos escolares en ejercicio, y conocer la valoración de éstos respecto a la estrategia didáctica aplicada y su articulación con las TIC, al identificar factores del diseño formativo que favorecen la transferencia de los aprendizajes al contexto educativo. Para ello, se utilizó una metodología cuantitativa, a través de la aplicación de un pre y post-test de conocimientos a una muestra de 168 participantes del curso; y luego una encuesta de satisfacción aplicada en tres cohortes, respondida por 123 participantes. Los resultados muestran una mejora estadísticamente significativa en los conocimientos sobre habilidades directivas de los participantes, lo cual evidenció la efectividad del curso. Por otra parte, el enfoque aplicado que orientó el curso, sustentado en la investigación-acción y el aula invertida desde una modalidad b-learning, fue altamente valorado por los docentes por cuanto propicia actividades aplicadas y contextualizadas, trabajo autónomo conjugado con reflexión colaborativa. Lo que permite fortalecer la autoconfianza profesional, favoreciendo a la vez la posterior transferencia de los aprendizajes.
Conciencia fonológica, un camino seguro hacia la lengua escrita: argumentación y estrategias
Authors: Loría-Rocha Marianella
Published: June 2020

La incorporación de la estimulación de la conciencia fonológica en el proceso educativo en los primeros años del estudiantado es un acierto importante para desarrollar de manera intencionada la base de los procesos de lectura y escritura de la niñez escolar. Tal atino, está claramente plasmado en el Programa de Estudio Educación Preescolar del Ministerio de Educación Pública (MEP) y el Programa de Estudio de Español (MEP, 2013) de primer grado.

Así que, motivar los procesos metalingüísticos mediante estrategias claras y graduadas, según las diversas tareas de dificultad, que toman en cuenta el proceso de adquisición del lenguaje, el desarrollo de la escucha y las características de los y las estudiantes, es la labor del presente documento ante los enormes vacíos sobre el tema en el personal docente.
Immobilization of laccase from Trametes versicolor on Lifetechtm supports for applications in degradation of industrial dyes
Authors: Bebic Jelena , Banjanac Katarina , Corovic Marija , Milivojevic Ana , Simovic Milica , Vukoicic Ana , Mitrovic Danica , Bezbradica Dejan
Published: June 2020

In this study, immobilization of laccase from Trametes versicolor on eight Lifetech? supports, with different characteristics (pore size, length of the spacer arm and functional groups), was studied and optimized for intended use in bioremediation for decolorization of industrial wastewaters. Out of six tested amino-functionalized supports, the most promising carrier was proved to be porous Lifetech? ECR8309F with primary amino groups and a C2 spacer arm. Onto this support, laccase is attached by forming electrostatic interactions so that the most active preparation has shown the activity of 66876 U/g support. On the other hand, during immobilization of laccase on epoxy-functionalized Lifetech? ECR8285F, via hydrophobic interactions and covalent bonding confirmed by a desorption assay, immobilization yield of 60 % and the activity of 118929 U/g were accomplished. Furthermore, immobilized enzyme on this support showed high capacity for decolorization of dyes (Lanaset? Violet B, Lanaset? Blue 2R, bromothymol blue and bromocresol green), by combination of both adsorption and enzyme degradation. Decolorization was in the range of 88 to 96 % after 4 h, with more than 80 % achieved after only 45 min. Also, this preparation demonstrated high operational stability during seven consecutive reuses in all examined dye reaction systems.
Validation of a novel perfusion bioreactor system in cancer research
Authors: Stojkovska Jasmina , Zvicer Jovana , Milivojevic Milena , Petrovic Isidora , Stevanovic Milena , Obradovic Bojana
Published: June 2020

Development of drugs is a complex, time- and cost-consuming process due to the lack of standardized and reliable characterization techniques and models. Traditionally, drug screening is based on in vitro analysis using two-dimensional (2D) cell cultures followed by in vivo animal testing. Unfortunately, application of the obtained results to humans in about 90 % of cases fails. Therefore, it is important to develop and improve cell-based systems that can mimic the in vivo-like conditions to provide more reliable results. In this paper, we present development and validation of a novel, user-friendly perfusion bioreactor system for single use aimed for cancer research, drug screening, anti-cancer drug response studies, biomaterial characterization, and tissue engineering. Simple design of the perfusion bioreactor provides direct medium flow at physiological velocities (100?250 ?m s-1) through samples of different sizes and shapes. Biocompatibility of the bioreactor was confirmed in short term cultivation studies of cervical carcinoma SiHa cells immobilized in alginate microfibers under continuous medium flow. The results have shown preserved cell viability indicating that the perfusion bioreactor in conjunction with alginate hydrogels as cell carriers could be potentially used as a tool for controlled anti-cancer drug screening in a 3D environment.
AGGRESSION AS AN OBJECTIVE FACTOR IN MODERN SOCIETY
Authors: Жигинас Наталья Владимировна , Сухачёва Наталия Игоревна
Published: June 2020

Анализируется проблема агрессии современного социума по материалам исследования, проведенного в 2014–2019 гг. на основании опросов мужчин и женщин различного социального и образовательного уровня в возрасте от 15 до 70 лет, данных массмедиа и научных исследований. Феномен агрессии много лет продолжает оставаться актуальной темой социологических, психологических и педагогических исследований, несмотря на большое число различных гуманитарных научных исследований и непрекращающуюся полемику в СМИ и на просторах интернета. Проблема агрессии и ее последствий для общества в целом и каждого индивида в частности является не просто актуальным, но и порой определяющим фактором развития, социальной интеграции и личностной позиции по отношению как к обществу, так и к отдельно взятому человеку. Результаты проведенного исследования свидетельствуют не только о множественности и многоуровневости агрессивного поведения и восприятия социума как агрессивного, но и вносят определенный вклад в понимание природы такого сложного феномена, как агрессивность. Однако, опираясь на данные психокоррекции наших ранних работ, мы можем говорить об ограниченности фатального восприятия феномена агрессивности и понимании путей возможного ее снижения. Сущность агрессии на гендерном уровне рассматривается как серьезный внутриличностный конфликт, являющийся помехой организации духовного пространства личности.

The article analyzes the problem of aggression of modern society on the basis of data from our own research conducted in 2014–19 on the basis of surveys of men and women of various social and educational levels aged 15 to 70 years, mass media and research data. The phenomenon of aggression for many years continues to be an urgent topic of sociological, psychological and pedagogical research, despite a large number of various humanitarian research and ongoing controversy in the media and on the Internet. Nevertheless, the problem of aggression and its consequences for society as a whole and each individual in particular is not only relevant, but also a direct determinant of development, social integration and personal position in relation to society as a whole and to an individual person in particular. The results of the study indicate not only the multiplicity and multi-level aggressive behavior and perception of society as aggressive, but also make a certain contribution to understanding the nature of such a complex phenomenon as aggressiveness. However, based on the data of psychocorrection of our early works, we can talk about the limitations of the fatal perception of the phenomenon of aggressiveness and understanding of the ways to reduce it. The essence of aggression at the gender level is considered as a serious intrapersonal conflict, which is an obstacle to the organization of the spiritual space of the individual.
FORMATION OF BACHELORS’ SUBJECTIVE POSITION USING THE CASE METHOD AND MODELS FOR ORGANIZING JOINT ACTIVITIES
Authors: Шварева Ольга Васильевна
Published: June 2020

Раскрыта возможность проявления саморазвития бакалаврами педагогического образования как основного компонента субъектной позиции и субъект-субъектных отношений. Охарактеризована взаимосвязь ключевых терминов: субъект, субъектность, субъектная позиция, субъект-субъектные отношения. С применением диагностического инструментария выявлены специфика понимания, его уровень и причины отказа демонстрации субъектной позиции бакалавров в образовательном процессе педагогического вуза. Показано, как с помощью кейс-метода можно формировать навык самоорганизации бакалавров при организации совместной деятельности преподавателя и студентов в педагогическом вузе.

Self-development and self-organization of the personality are of great importance for the effectiveness of the educational and professional activities of the teacher. The article reveals the possibility of self-development of a bachelor of pedagogical education as the main component of the subject position and subject-subject relations. The interconnection of the key terms: subject, subjectivity, subjective position, subject-subject relations, is characterized. Using diagnostic tools, such as an author’s questionnaire consisting of open and closed questions, the specifics of understanding, the level and reasons for the refusal to demonstrate the subject position by bachelors in the educational process of a pedagogical university are revealed. Processing of the results of the questionnaire was carried out by calculating the average score and content analysis. As a result of the study, it was clarified that many factors influence the manifestation of the students’ subjective position in the process of their study at the university, some of which are the lack of self-organization, self-development skills, the predominant influence of the teacher and the lack of their joint activities. The article shows how, with the help of the case-method, it is possible to build the skill of self-organization of bachelors when organizing joint activities of a teacher and students at a pedagogical university. The substantial similarity of the implementation of the case method with the models of joint activity: authoritarian, leadership, partnership, is indicated. The emphasis is on the fact that, as part of the case method, when organizing joint activities, the main task is to build the subjectivation strategy between the teacher and the students in the process of solving various types of cases that become more complicated for each bachelor’s course. Features of the organization of students’ and teachers’ activities from the reproduction strategy to the strategy of cooperation through the demonstration by subjects of the educational process of their subjective position are presented.
Advanced methods of earnings management: monotonic trends and change-points under spotlight in the Visegrad countries
Authors: Kliestik Tomas , Valaskova Katarina , Nica Elvira , Kovacova Maria , Lazaroiu George
Published: June 2020

Research background: Enterprises manage earnings in an effort to balance their profit fluctuations to provide increasingly consistent earnings in every reporting period. Earnings management is legal and very effective method of accounting techniques and may be used to obtain specific objectives of the enterprises involving the manipulation of accruals. Therefore, there is a need to analyze it in the context of group of countries, while the issue of their detection in the new ways appears. 
Purpose of the article: The analysis of annual earnings before interest and taxes (EBIT) of 5,640 enterprises from the Visegrad Four during the period 2009?2018 confirms that the development of earnings management in these countries is not a randomness. Thus, the aim of this article is to determine the existence of positive trend in earnings management and to detect the change-point in its development for each Visegrad country.
Methods: Grubbs test, Mann-Kendall trend test and Buishand test were used as appropriate statistical methods. Mann-Kendall test identifies significant monotonic trend occurrence in earnings manipulation in every country. Buishand test indicates significant years, which divides the development of EBIT into two homogenous groups with individual central lines.
Findings & Value added: Based on the statistical analysis applied, we rejected randomness in the managing of earning, but we determined the trend of its increasing. The positive earnings manipulation was not homogenous in the analyzed period, however, a change-point was defined. Year 2014 was identified as a break-point for Slovak, Polish and Hungarian enterprises considering the earnings manipulation. Year 2013 was detected as a change-point in Czech enterprises. The methodical approach used may be very helpful for researchers from other countries to determine, detect and understand earnings management as well as for the investors to make decisions based on a specificities of an individual country.
Adaptation of Soiuy Mullet (Liza Haematocheilus (Temminck & Schlegel, 1845)) to industrial conditions
Authors: Ponomareva Elena Nikolaevna , Tazhbaeva Dinara , Kovalenko Matvey Victorovich , Bezverhiy Valeriy Aleksandrovich , Sorokina Marina Nikolaevna
Published: June 2020

The article describes the research carried out in the aquarium complex of the scientific expedition base (SEB) “Kagalnik” of the southern scientific center of the Russian Academy of Sciences. The object of research was mullet species – pilengas (Liza haematocheilus (Temminck & Schlegel, 1845)). The method of adaptation of pilengas to industrial conditions is developed. It is based on step-by-step adaptation of fish to new conditions during the period of 30-40 days. The conversion of pilengas

to artificial food was carried out with wet feed based on fresh minced fish and artificial granulated feed. Three types of feeds with different nutrient content were used. The long-term use of wet feed in closed or semi-closed systems is not advisable, due to the rapid water pollution and deterioration of the hydrochemical regime, so pilengas later completely started to eat dry granulated feed, due

to which the optimal growth rates were obtained. Pilengas increased body weight while maintaining exterior characteristics. Therefore, the food with high protein content (up to 40%) is recommended for pilengas. The physiological parameters of pilengas blood were satisfactory both in wild individuals and those adapted in a closed water supply. As a result of the conducted research, there was confirmed the possibility of adaptation, maintenance and cultivation of pilengas in the closed water supply systems using mixed feeds.
To the question of variability of number of micropyles in oocytes of ship sturgeon (Acipenser nudiventris)
Authors: Bekbergenova Victoria
Published: June 2020

The paper considers the characteristics of the gametes, habitats and spawning conditions of sturgeon, which are important for improving the biotechnology of their artificial reproduction. Based on the native data and literature, there have been analyzed the limits of variation of micropyle of ship sturgeon (Acipenser nudiventris Lovetsky, 1828) and some other species,

as well as the features of the micropylar complex. The material for the study conducted in 2018-2019 served the ovulated eggs and caviar from the broodstock of the second-third generation of ship sturgeon, which contained in the conditions of the State Regional Centre for Sturgeon Gene Pool Conservation “Kubanbioresursi”. Ship sturgeon has been found to have the largest average number of micropyles among low-chromosomal species. In the main sample, the number of micropyles varied from 2 to 41, with an average value of 11.09 ± 0.24 and a concentration of indicators from 2 to 19 (94%). The location peculiarity and a slight variation in the number of micropyles in one female species of ship sturgeon have been revealed, as well as the different shape of a micropylar complex, as opposed to the similar shapes in other sturgeon species: ship sturgeon has not the funnel-shaped micropylar complex, but the bowl-shaped one. The ship sturgeon spawns under conditions of high water speed and a micropylar bowl, the diameter of which exceeds 2-3 times the diameter of the funnel and increases the collection area of the highly diluted seminal fluid. From a practical point of view, studying these features is important for improving the biotechnology of artificial insemination of roe of rare species in conditions of almost complete absence of natural reproduction in natural conditions.
Fish production potential of lakes of Republic of Karelia at present stage
Authors: Cherepanova Nadezhda Stepanovna , Georgiev Andrey Pavlovich , Gorbachev Stanislav Alekseevich , Shirokov Vyacheslav Anatolievich
Published: June 2020

The state, use of fish resources of the main fishing reservoirs of the Republic of Karelia and the features of their operation are summarized and analyzed. The studies included the identification of possible causes of changes in the qualitative and quantitative composition of the ichthyofauna of the region, an analysis of the degree of use of the raw material base and the development of measures to optimize fishing. By the example of the largest inland water bodies (lakes and reservoir lakes) of Karelia was revealed that a characteristic feature of fishing in the region is its focus

on the removal of the most valuable (protected) fish species during the underutilization of stocks of other species. As a result, the fishing potential, estimated at 4.3-5.1 thousand tons, is realized only by 20-25%, while the catch of economically and genetically valuable species (salmon, whitefish) is practically not recorded by statistics and the fishing industry is not used enough. According

to the research results, the fish productivity of the region’s inland water bodies is presented, which must be taken into account when determining the nature of fishing. The obtained specific biologi-cal, biostatistical and fishing materials for the leading reservoirs of the Republic of Karelia allow us to consider ways of further development of fishing
Extruded starter compound feeds for clarid catfish
Authors: Sidorova Valentina Ivanovna , Asylbekova Saule Zhangirovna , Yеnvareva Nadezhda Ivanovna , Koyshibaeva Saya Kashkinbayevna , Badryzlova Nina Sergeevna , Mukhramova Alyona Aleksandrovna , Shutkarayev Azis Vasilyevich
Published: June 2020

Industrial fish-breeding is a promising trend for freshwater aquaculture development. The production of clarid catfish in Kazakhstan has advantages over traditionally grown fish species (trout, sturgeon) due to their valuable edible qualities. Clarid catfish grows very quickly even at high seeding densities, is undemanding to the environment, resistant to diseases, and effectively assimilates food. When growing clarid catfish in water recycling systems it is possible to refuse using oxygen equipment, because the fish species can use atmospheric air for breathing. As a result, the construction of such plants can save up to 40% of capital investments. In the course of the research, the physiological nutritional requirements of clarid catfish juveniles were established. Based on the data obtained there have been developed two extruded starter compound feed recipes for clarid catfish juveniles containing protein/fat 53.5 : 11.4 and 61.85 : 5.82 and energy exchange energy value varying within 16.46 - 17.12 MJ/kg. There have been conducted the production tests on assessing the efficiency of the developed compound feed and their intake by larvae and clarid catfish fry in the fish farms of “Kapshagayskoye NVH-1973”, LLP and “HalykBalyk”, LLP. The feed Aller Agua (Denmark) served as a control feed for comparing the nutritional and consumer qualities of the developed feed for trout. The determined feeding ratio of the developed feed did not exceed 0.93 units, it was insignificantly inferior to the import feed. The fry survival rate made 76% when using both the control and developed feed. The compound feeds for clarid catfish juveniles were developed by extruding, which allowed to obtain increased digestibility, water resistance and extended storage life. Introducing these feeds into the fish breeding practice will help to increase the efficiency of clarid catfish fry growth and expand opportunities of aquaculture facilities.
Biology and current state of anchovy kilka (Clupeonella engrauliformis Borodin)
Authors: Razinkov Vjacheslav Petrovich , Paritskiy Yuriy Aleksandrovich , Grozesku Yulia Nikolaevna
Published: June 2020

In the Caspian Sea sprats is the name of the numerous small fish of herring family (Clupeonella). One of Clupeonella representatives is anchovy sprat. It differs from other types of kilka not only in appearance, but also in its way of life. A brief biology of the species and the state of ecosystem of the Caspian pelagic zone has been described. Anchovy kilka has been a leading targeted fish for over 50 years. Invading the Caspian Sea by ctenophore-mnemiopsis has undermined the stocks of anchovy sprats and caused the crisis of anchovy kilka fishing. Recently, there has been observed a slight increase in the number of the species. The survey materials confirm the increase in the number of juveniles in the studied catches. There are presented the materials from the last six years (2014–2019) of observations (eight research runs), shown the dynamics of abundance, biomass, spawning females, and total fertility of the population. Spawning efficiency and survival rate in early ontogenesis are analyzed. The relationship between kilka survival rate and the number of emerging generations is stated. Recommendations on restoring the stock of anchovy kilka are given. To restore the ecosystem of the Caspian Sea there has been proposed the invasion of a new species – ctenophore-beroe (Beroe ovata), which, due to the structure of its mouthparts eats only jelly-skinned (ctenophore-mnemiopsis, exceptionally) and can significantly reduce the number of ctenophore-mnemiopsis