bluuebunny/crossref_metadata_2025 huggingface dataset:
FEATURES OF THE INFLATIONARY PROCESS IN MODERN RUSSIA
Authors:   Samara State University of Economics, MATER ELENA , MINGAZOVA DILYARA ,   Samara State University of Economics
Published: August 2023

The scientific article discusses the theoretical aspects of inflation: its essence, types, types, causes of its occurrence, as well as positive and negative consequences. The features of inflationary processes taking place in the modern Russian economy are analyzed. The dynamics of the inflation rate, the state budget from 2018 to 2022 are considered, the dynamics of the maximum values of the US dollar monthly in 2022 is illustrated. An assessment of the dependence of the state budget on prices for oil and gas products is presented based on a study of the structure of federal budget revenues. Russia's strategy for the near future is formulated, which is characterized by a high degree of uncertainty.
EXPERIENCE EFFECT AS A COMPETITION FACTOR
Authors:   Samara State University of Economics, VISHNEVER VADIM
Published: August 2023

The article analyzes the effect of experience. Its influence on the competitive positions of firms is revealed. The factors that ensure the effective use of the effect of experience are determined.
LEGAL REGULATION OF PARALLEL IMPORTS IN RUSSIA
Authors:   Moscow Financial and Industrial University “Synergy”, KOCHELAEVSKY ILYA
Published: August 2023

The article discusses the regulatory framework and the process of regulating the parallel import of various goods to the Russian Federation. The aspects that present difficulties for market participants in carrying out operations for the implementation of parallel imports of goods to Russia are highlighted.
The comparison of gold extraction methods from the rock using thiourea and thiosulfate
Authors: Yanti Ika , Marliana Thia , Anugrahwati Mai , Wicaksono Wiyogo Prio , Winata Wahyu Fajar
Published: August 2023

Gold extraction from the rock is generally carried out using mercury. However, the high toxicity of mercury has a very dangerous impact on the environment and health. Various efforts have been made to reduce the use of mercury in gold extraction, one of which is the leaching method using thiosulphate and thiourea solution because they have low toxicity and are environmentally friendly. This study aimed to determine the results of gold extraction with thiosulphate and thiourea solution and determined the optimum concentration and time of extraction. The yield of the gold extract with thiosulphate solution was greater than that of thiourea solution. The thiosulphate solution had an optimum concentration of 0.3 M and an optimum time of 2 h. While the thiourea solution had an optimum concentration of 0.2 M and an optimum time of 3 h. The results of the Friedman test on the leaching time and concentration parameters show that leaching time has a significant effect on the Au leaching process, and the concentration parameter does not affect the Au leaching process from solid samples.
Global optimum solutions for a system of (k, ψ)-Hilfer fractional differential equations: Best proximity point approach
Authors: Patle Pradip Ramesh , Gabeleh Moosa , De La Sen Manuel
Published: August 2023

In this article, a class of cyclic (noncyclic) operators are defined on Banach spaces via concept of measure of noncompactness using some abstract functions. The best proximity point (pair) results are manifested for the said operators. The obtained main results are applied to demonstrate the existence of optimum solutions of a system of fractional differential equations involving

(

k
,
ψ

)

\left(k,\psi )

-Hilfer fractional derivatives.
Weighted Hermite-Hadamard inequalities for r-times differentiable preinvex functions for k-fractional integrals
Authors: Zafar Fiza , Mehmood Sikander , Asiri Asim
Published: August 2023

In this article, we have established some new bounds of Fejér-type Hermite-Hadamard inequality for

k

k

-fractional integrals involving

r

r

-times differentiable preinvex functions. It is noteworthy that in the past, there was no weighted version of the left and right sides of the Hermite-Hadamard inequality for

k

k

-fractional integrals for generalized convex functions available in the literature.
The influence of task complexity and task modality on learners’ topic and turn management
Authors: Ren Wei , Peng Yuchen , Wu Yiman
Published: August 2023

Peer interaction is examined as an important indicator of performance in task-based language learning. However, little research has explored learners’ interactional competence under the influences of task factors. This study investigates the effects of task complexity and task modality on learners’ interactional competence in terms of topic management and turn management. Four tasks were designed – written-simple, written-complex, oral-simple, and oral-complex – and 40 Chinese EFL learners completed them in counterbalanced sequences. The results showed the significant influences of task complexity and task modality on learners’ topic and turn management. Task modality and complexity interactively influenced learners when they were expanding on topics in the role of the current speaker. Considering the cognitive demands of increasing complexity and differences between the two modalities, this paper discusses the implications of the findings for developing L2 interactional competence in speech- and text-based interactions.
Activity patterns of the Yellow-throated marten Martes flavigula in the Far East of Russia revealed by camera traps
Authors: Oleynikov Aleksey Yurievich , Sedash Gleb A. , Salkina Galina P. , Maslov Mikhail V.
Published: August 2023

The Yellow-throated marten Martes flavigula is one of the least studied species within the genus Martes and there is contradictory information regarding its daily activity, spanning from diurnal to nocturnal or cathemeral. Our long-term studies of the daily and seasonal activity of the Yellow-throated marten were carried out in five protected areas of Primorsky Krai (Russian Far East) using a large-scale network of camera traps from 2010 to 2021. The aim of the study was to find out the pattern of daily activity of the species, its changes over the seasons and in different territories of the region. We found that the Yellow-throated marten had a pronounced diurnal activity pattern, including one or two detection peaks per day. The species is less active at dusk and almost inactive at night in this part of its range. Two clusters with different patterns of marten activity were identified in the protected areas of Primorsky Krai: with one pronounced peak around noon in the continental part with a more severe climate and smoothed activity in coastal areas with milder climatic conditions. Seasonal detection has two peaks in April-May and October, which corresponds to species biological requirements.
Transition metal complexes for electrochromic and electrofluorochromic devices
Authors: Kim Yuna , Kubo Kazuya
Published: August 2023

This minireview discusses recent advances in transition metal complexes for electrochromic (EC) and electrofluorochromic (EFC) devices. EC and EFC materials can switch their color and photoluminescence, respectively, through electrochemical redox reactions. Transition metal complexes offer promising opportunities due to their molecular design versatility for various optoelectrical properties. The review provides an overview of electrochromism and electrofluorochromism, including performance characterization methods and device fabrication techniques. It highlights EC transition metal complexes that can form thin films suitable for device applications and EFC transition metal complexes that can efficiently tune photoluminescence through electrochemical quenching mechanisms. The review also summarizes advanced functions of EC/EFC transition metal complexes, including large optical contrast, fast response, dual-switching of color and emission, and easy device fabrication, which could lead to low-cost displays. Overall, this review article presents the latest research on transition metal complexes for EC and EFC devices and their potential for practical applications.
Simplifying the theoretical treatment ofwagerverbs
Authors: Reed Lisa A.
Published: August 2023

Since at least Postal (1974.On raising. Cambridge, Mass: MIT Press), English has been assumed to possess a class of verbs that does not syntactically tolerate an overt noun phrase in the “usual” subject position of an infinitival complement clause but will allow one if it has undergone passivization,Wh-formation, Heavy-NP Shift, etc. This class of verbs has been variously described as Derived Object Constraint (DOC) verbs (Postal, Paul. 1974.On raising. Cambridge, Mass: MIT Press, Postal, Paul. 1993. Some defective paradigms.Linguistic Inquiry24(2). 347–364), ECM-with-Focus verbs (Rooryck, Johan. 2000.Configurations of sentential complementation: Perspectives from Romance languages. London & New York: Routledge), andwager-class verbs (Pesetsky, David. 2019.Exfoliation: Towards a derivational theory of clause size. Massachusetts Institute of Technology. Unpublished ms., Version 2.0.http://ling.auf.net/lingbuzz/004440(accessed 26 April 2022)). Based on the author’s own judgments, supplemented by the results of an acceptability survey conducted at an American university, this paper makes the novel claim that an English verb class with these grammatical properties does not exist, a finding that significantly reduces the inventory of grammatical mechanisms needed to account for complementation types generally. In addition, this paper develops new accounts of two distributional characteristics of thewagerverbs that certain other Raising to Object (RO)/Exceptional Case Marking (ECM) verbs do not exhibit. First, infinitival complements towagerverbs are argued to be aspectually linked to the matrix verb, while those ofpredict-type verbs are not. This explains a well-known stative restriction on complements to this verb class, which includesbelieve. Second, judgments of unacceptability previously attributed to Postal’s DOC or its counterpart in other theories are argued to result from three pragmatic usage preferences involving register and atypical degree that are encoded by the selection of the marked RO option with this verb class, preferences that play out differently forbelieveas opposed towagerverbs.
Crystal structures of biocompatible Mg-, Zn-, and Co-whitlockites synthesized via one-step hydrothermal reaction
Authors: Stefanovich Sergey Yu. , Lazoryak Bogdan I. , Antipin Alexander M. , Volkov Anatoliy S. , Evdokimov Andrei I. , Gurbanova Olga A. , Dimitrova Olga V. , Deyneko Dina V.
Published: August 2023

Large-scale single crystals of Ca9Mg(PO4)6(PO3OH), Ca9Zn(PO4)6(PO3OH), and Ca9Co(PO4)6(PO3OH) were synthesized using hydrothermal technique, and turned out to be similar to natural bone whitlockite. The hexagonal single crystals about 1 mm with high-quality were obtained with this method for the first time. The crystals were of sufficiently good quality for the precision X-ray structural investigation. The compounds crystallize in usual for this structural type trigonal space group R3c. Presence of hydrogen atom in the structure was confirmed by means of infra-red (IR) spectroscopy, differential scanning calorimetry (DSC) and differential thermogravimetry (DTG) methods. Based on the analysis of the local bond valence sum (BVS), a conclusion on the localization of H atoms was made. The formation of O–H groups and hydrogen bonds H⋯O in vicinity of PO4 tetrahedra was shown and similar to bone whitlockite. This research provides new data on possibility of using hydrothermal technique for obtaining doped bone whitlockites. Hydrogen-containing doped whitlockites can combine bioactive properties and improve biocompatibility due to similarity to natural bond. New structural data are useful for finding the ways to better biocompatibility of whitlockite-based materials.
Bifurcation analysis of ion-acoustic superperiodic waves in ultra-relativistic dense plasma
Authors: El-Labany Salah K. , Selim Mustafa M. , Habbak Enas L. , El-Shamy Emad F.
Published: August 2023

Bifurcation analysis of ion-acoustic solitary, periodic and superperiodic waves in ultra-relativistic quantum degenerate electron-positron-ion plasma is investigated based on Sagdeev’s pseudopotential approach. The phase plane plots for the superperiodic, periodic, and homoclinic trajectories for the dynamical system are developed. Rarefactive and compressive solitary waves are demonstrated to exist. The influence of plasma parameters on the characteristic properties of the periodic and superperiodic waves is studied. Also, the effect of different plasma parameters on the Sagdeev pseudopotential profile is investigated. The results of this study may be used to shed light on the fundamental properties of nonlinear waves in dense objects (e.g., white dwarfs and neutron stars). These results also may be beneficial in describing laboratory plasma (e.g., interaction experiments of intense laser-solid matter), and plasma applications such as microelectronic devices.
ANÁLISE AERODINÂMICA EM UM AMBIENTE URBANO
Authors: Ulisses da Silva Paulo , Bono Gustavo
Published: August 2023

Os ambientes urbanos estão em constante desenvolvimento, fazendo com que as interações aerodinâmicas nesses locais se tornem cada vez mais complexas. Modificações na vizinhança de uma edificação podem levar a grandes variações nos coeficientes de pressão média (Cp) e na configuração do escoamento. Neste trabalho, investiga-se os efeitos da altura e distanciamento da vizinhança nos valores de Cp e no coeficiente de momento com relação à base (CM) de uma edificação prismática de proporções 20 × 20 × 120 m. O estudo emprega seis diferentes alturas de vizinhança com relação a um edifício central, além de dois valores de distanciamento entre as edificações vizinhas. Os casos são simulados empregando a metodologia RANS e o modelo de fechamento κ-ε clássico no software baseado na Dinâmica dos Fluidos Computacional, OpenFOAM. Os resultados mostram que o aumento na altura da vizinhança possui efeito de proteção nas edificações centrais no ambiente urbano. Em contraste, ao aumentar a distância com relação à vizinhança, diminui-se o fator de proteção.
Suppressive Control of Incentive Salience in Real-World Human Vision
Authors: Hickey Clayton , Acunzo David , Dell Jaclyn
Published: August 2023

Reward-related activity in the dopaminergic midbrain is thought to guide animal behavior, in part by boosting the perceptual and attentional processing of reward-predictive environmental stimuli. In line with this incentive salience hypothesis, studies of human visual search have shown that simple synthetic stimuli, such as lines, shapes, or Gabor patches, capture attention to their location when they are characterized by reward-associated visual features, such as color. In the real world, however, we commonly search for members of a category of visually heterogeneous objects, such as people, cars, or trees, where category examples do not share low-level features. Is attention captured to examples of a reward-associated real-world object category? Here, we have human participants search for targets in photographs of city and landscapes that contain task-irrelevant examples of a reward-associated category. We use the temporal precision of EEG machine learning and ERPs to show that these distractors acquire incentive salience and draw attention, but do not capture it. Instead, we find evidence of rapid, stimulus-triggered attentional suppression, such that the neural encoding of these objects is degraded relative to neutral objects. Humans appear able to suppress the incentive salience of reward-associated objects when they know these objects will be irrelevant, supporting the rapid deployment of attention to other objects that might be more useful. Incentive salience is thought to underlie key behaviors in eating disorders and addiction, among other conditions, and the kind of suppression identified here likely plays a role in mediating the attentional biases that emerge in these circumstances.

Significance StatementLike other animals, humans are prone to notice and interact with environmental objects that have proven rewarding in earlier experience. However, it is common that such objects have no immediate strategic use and are therefore distracting. Do these reward-associated real-world objects capture our attention, despite our strategic efforts otherwise? Or are we able to strategically control the impulse to notice them? Here we use machine learning classification of human electrical brain activity to show that we can establish strategic control over the salience of naturalistic reward-associated objects. These objects draw our attention, but do not necessarily capture it, and this kind of control may play an important role in mediating conditions like eating disorder and addiction.
High chemodiversity in the structural and enantiomeric composition of volatiles emitted by Kermes oak populations in Southern France
Authors: Staudt Michael , Visnadi Isabelle
Published: August 2023

Investigating the intraspecific variability of volatiles produced by vegetation is of fundamental importance in the understanding of their ecological roles and in correctly assessing their fluxes from vegetation covers. We characterized foliar emissions and CO2/H2O-gas exchanges from 80 seed-grown Kermes oak (Quercus coccifera L.) saplings originating from 4 populations located on a northeast–southwest transect in Southern France. Emissions of a large range of volatiles including chiral isomers were determined under environmentally controlled conditions by online and offline gas chromatography. All saplings emitted principally α-, β-pinene, sabinene, myrcene, eucalyptol, and limonene plus traces of other monoterpenes (MTs), sesquiterpenes, and isoprene. The enantiomers of α- and β-pinene were highly correlated with a predominance of the (+)-forms in the emissions. On average, the total isoprenoid emission rate was 772 ± 398 ng m−2 s−1. The compositional fingerprint varied in a discontinuous manner among individuals unrelated to the emission quantity and little influenced by season and leaf age. Cluster analyses revealed 4 main chemotypes plus 2 subtypes, which could be explained by a combination of 5 putative MTs synthases producing predominantly myrcene, limonene, eucalyptol, (+)-pinenes, and sabinene plus (−)-pinenes, respectively. The frequency of chemotypes, the average fraction of single volatiles and the ratios of pinene enantiomers were significantly different among populations without clear geographic or climatic cline. However, plants of one chemotype, which was most abundant in the population of the driest site, expressed an increased photosynthetic water use efficiency. Overall, the results revealed a marked ubiquitous chemical polymorphism in Kermes oak populations with similarities to that observed in other MT producing oak species, especially with its closely related and sympatric congener Holm oak.
Fasting‐sensitive SUMO‐switch on Prox1 controls hepatic cholesterol metabolism
Authors: Alfaro Ana Jimena , Dittner Claudia , Becker Janina , Loft Anne , Mhamane Amit , Maida Adriano , Georgiadi Anastasia , Tsokanos Foivos‐Filippos , Klepac Katarina , Molocea Claudia‐Eveline , El‐Merahbi Rabih , Motzler Karsten , Geppert Julia , Karikari Rhoda Anane , Szendrödi Julia , Feuchtinger Annette , Hofmann Susanna , Karaca Samir , Urlaub Henning , Berriel Diaz Mauricio , Melchior Frauke , Herzig Stephan
Published: August 2023

Accumulation of excess nutrients hampers proper liver function and is linked to nonalcoholic fatty liver disease (NAFLD) in obesity. However, the signals responsible for an impaired adaptation of hepatocytes to obesogenic dietary cues remain still largely unknown. Post‐translational modification by the small ubiquitin‐like modifier (SUMO) allows for a dynamic regulation of numerous processes including transcriptional reprogramming. We demonstrate that specific SUMOylation of transcription factor Prox1 represents a nutrient‐sensitive determinant of hepatic fasting metabolism. Prox1 is highly SUMOylated on lysine 556 in the liver of ad libitum and refed mice, while this modification is abolished upon fasting. In the context of diet‐induced obesity, Prox1 SUMOylation becomes less sensitive to fasting cues. The hepatocyte‐selective knock‐in of a SUMOylation‐deficient Prox1 mutant into mice fed a high‐fat/high‐fructose diet leads to a reduction of systemic cholesterol levels, associated with the induction of liver bile acid detoxifying pathways during fasting. The generation of tools to maintain the nutrient‐sensitive SUMO‐switch on Prox1 may thus contribute to the development of “fasting‐based” approaches for the preservation of metabolic health.
Granting Clemency to Antasari Azhar as the Object of a State Administrative Law Dispute
Authors: Syah Ary Muktian
Published: August 2023

Antasari Azhar as the intellectual brain in the murder case of Nasrudin Zulkarnaen on March 14 2009. The victim was shot dead in the head while playing golf in Tangerang. Antasari was dragged into the worst case because there were messages containing threats against the victim as evidence. Antasari through his party submitted a request for clemency to the President, namely Joko Widodo, and in the end he received a parole decision to submit a request for clemency to President Joko Widodo, finally in 2016 Antasari was declared parole, and in 2017 he was released purely because the request related to his clemency was accepted President. The purpose of this paper is to find out how clemency is a special legal remedy based on the perspective of the Indonesian legal state and to find out whether the granting of clemency to Antasari Azhar is included in the object of state administrative law disputes. This research method is a normative juridical research method with a qualitative nature. Then the data were analyzed using descriptive analytical methods. Clemency is a special legal remedy, based on the constitution, clemency is essentially a form of pardon in the form of reducing or mitigating the criminal verdict handed down. Clemency issued by the President in the form of a Presidential Decree is one of the objects of state administration because in it there is a statement that has an individual, concrete and final nature which is imposed on a civil legal entity or a person, therefore a Presidential Decree containing clemency can be sued.
Surveying middle school computer science throughout the United States: a needs assessment for teachers
Authors:   ,   Montana State University, Firth Olivia Rose
Published: August 2023

Middle school computer science plays an important role in increasing student interest and engagement, as well as leveling the playing field for students as they enter high school. Computer science courses or the introduction of CS into other STEM courses is also a valuable opportunity to build higher order thinking and problem-solving skills that will serve students throughout their education. However, the state of middle school computer science (CS) has yet to be studied in depth. Particularly, research is needed to understand the challenges facing a diverse population of middle school CS teachers. With the goal of learning to better support CS teachers, we have performed interviews and surveys amongst teachers throughout the country to illustrate the state of middle school CS and CS teacher self-efficacy. This project fills in this gap by serving as a needs assessment for a difficult to reach population because the track to become a middle school CS teacher is not well-defined, and many of these teachers are new to the role or have taken it on as an additional responsibility.
OTP System Based Smart Door Lock
Authors: Rahman Sagnik , Acharya Patatri , Saha Tideesha , Dey Pramiti , Ghos Prema , Sen Soumil
Published: August 2023

New, improved locking solutions are replacing older lock systems that use a mechanical lock and key mechanism. These methods combine mechanical and electronic components and are extremely intelligent. One of the standout characteristics of these cutting-edge lock systems is their efficiency
and simplicity. Such an automatic lock system comprises of an electronic control assembly that authenticates users through GSM and uses an OTP to control the output. A motor, lamp, or any other mechanical or electrical load could be this output load. Here, we used an Arduino microcontroller
to create an electronic code lock system. Our main objective is to build a comprehensive security system using embedded (Microcontroller) and wireless (GSM device) technology. The suggested solution offers a low-cost service with assured high security when compared to competing security systems.
Data Transfer Using Li-fi
Authors: Sharma Ankit Kumar , Agarwal Anish , Changder Soumyadip , Kumar Amit , Bhutiani Manan , Singh Chandra Shekhar , Bibar Sinchan , Singh Abhijeet Kumar , Roy Ankan , Dey Abhirup
Published: August 2023

Light-based wireless communication, abbreviated as Li-Fi or Li-Fi, uses light rather than radio waves to send data from one device to another. This technology relies on visible light communication (VLC) to transmit information through light-emitting diodes (LEDs). By modulating the
intensity of the light, Li-Fi enables high-speed data transfer and can be used in various applications such as indoor positioning systems and internet connectivity in areas with high radio frequency interference. This concept was first presented by Harald Haas at a TED Global event in Edinburgh
in 2011. Li-Fi, short for light-fidelity, is a light communication system that can send and receive data rapidly across the visible, ultraviolet, and infrared light spectrums. Only light-emitting diode (LED) bulbs are currently capable of transmitting data in the visible spectrum. Similar
to Wi-Fi from the perspective of the end user, the technology differs primarily in that Wi-Fi transmits data by inducing a voltage in an antenna through radio waves, whereas Li-Fi does so through the modulation of light intensity. Li-Fi can operate in environments where other wireless technologies
would be disrupted by electromagnetic noise (e.g.aircraft cabins, hospitals, or the military).
Reflexiones que emergen en torno a la labor del maestro en tiempos de pandemia, a partir de la observación de la clase de ciencias dirigida a estudiantes de tercero de primaria de la Escuela Pedagógica Experimental
Authors: Rey Mogollón Laura Sofía , Escobar Gil Gloria Inés
Published: August 2023

La presente biocrónica surge de la reflexión y aproximación al ejercicio de la práctica pedagógica y didáctica de los maestros en formación en tiempos de pandemia. Este escrito hace parte de la reflexión sobre los aprendizajes logrados durante la práctica I, que corresponde al período académico 2020-2, de la Licenciatura en Biología de la Universidad Pedagógica Nacional, efectuada en la institución educativa Escuela Pedagógica Experimental (EPE). Es de añadir que, las reflexiones aquí plasmadas corresponden a las posibles estrategias pedagógicas y didácticas para la enseñanza de las Ciencias, que emergen de la mediación virtual a causa de la Covid-19, y que contribuyen al proceso formativo de los maestros, como al afianzamiento del docente en ejercicio para enfrentarse a los retos que ofrece la actual crisis sanitaria.
 
Dado el propósito de este ejercicio escritural, es pertinente mencionar de manera inicial su estructura y la intencionalidad de cada uno de sus apartados, organizándose éste de la siguiente manera; inicia con una breve descripción de la Práctica Pedagógica y Didáctica de la Licenciatura en Biología de la Universidad Pedagógica Nacional; seguido, de una sucinta argumentación y contextualización de la institución educativa elegida para realizar la práctica I; adicionalmente, se enfatiza en los “Proyectos de Aula”, que surgen a la luz de las ATA´s, estrategia metodológica y didáctica de la institución, además de mencionar ciertas generalidades de las mismas; seguido de esto, se presenta una reflexión que emerge del proceso formativo apoyada en lo que Morín (1979) denomina “cabeza bien puesta” y "cabeza repleta"; posteriormente, se mencionan las particularidades al interior del “Proyecto de Aula” para tercero de primaria, donde se aborda el estudio de ciertas especies de aves, cuyo propósito es el reconocimiento de la diversidad de dichos organismos; por otra parte, se destacan algunos postulados frente al quehacer del maestro desde la teoría, en contraste con las reflexiones que emergieron a partir de la observación de la clase de ciencias, además de mencionarse la incidencia que tuvo la maestra en formación; se añade también, el espacio que brinda la EPE para la formación de maestros en ejercicio; y finalmente, se cierra este escrito con reflexiones finales que surgen de dicha experiencia.
Diseño, implementación y evaluación de una unidad didáctica que integra modelización biológica y metacientífica a partir de un hecho sociocientífico en la formación del profesorado
Authors: Lozano Eduardo Enrique , Cremer María Cecilia , Mut Paula Natalia , Bahamonde Nora
Published: August 2023

El proceso de diseño, implementación y evaluación de Unidades Didácticas (UD), constituye un potente dispositivo para el desarrollo de innovaciones en la enseñanza de las ciencias y puede dar lugar a transformaciones profundas en las prácticas educativas. En el contexto de un Profesorado en Biología en el ámbito de la Universidad, las UD nos permiten concretar y especificar vinculaciones entre el campo de la formación en didáctica y el campo de la formación disciplinar en biología, y también integrar la modelización de fenómenos biológicos y de ideas clave metacientíficas, de manera sincrónica, a partir de la consideración de hechos sociocientíficos que contextualizan y dan sentido a la enseñanza. En este marco, la investigación se desarrolló desde un enfoque cualitativo, implementando “estudios de diseño” en “ciclos iterativos”, con el objetivo de diseñar, implementar y evaluar una UD en la disciplina Biología Humana, para la enseñanza del modelo de “regulación de la presión arterial” (PA), en paralelo al desarrollo de una idea clave sobre “paradigma”. En este artículo se presenta una síntesis de la UD integradora, un detalle de las actividades que colaboraron en la construcción de una idea sobre “paradigma” y el análisis de las producciones de los y las estudiantes, las que dan cuenta de un proceso significativo de reelaboración y complejización de ideas respecto de qué son y cómo operan los paradigmas en la actividad científica.
Una mirada desde la educación: fomentar conocimiento sobre la comunicación vocal de un grupo de zogui zogui (Plecturocebus ornatus), en San Martín (Meta, Colombia)
Authors: Díaz Medina Gloria Esperanza
Published: August 2023

El tití zogui zogui o zocay, Plecturocebus ornatus, es un primate endémico de Colombia y conocer sobre su comunicación vocal permite acercarnos a su hábitat y aprender a cuidar su especie. El estudio se realizó en la Reserva Natural "El Caduceo" de San Martín, departamento del Meta (Colombia). Durante un mes se trabajó con un grupo de tres individuos (macho, hembra y juvenil), donde se aplicó muestreo de comportamientos con registro continuo y animal focal, grabando vocalizaciones de estos titíes y asociándolos a contextos particulares. Se elaboró un catálogo comportamental y vocal, donde se identificaron 9 fonemas o vocalizaciones (duetos, silbidos, gorjeos , gorjeos , graznidos, ‘pip’, gemidos, pujos y berridos) de las 14 que menciona Robinson (1981), asociadas a 21 comportamientos. Las categorías más incluyentes de comportamientos fueron 8 (agresión, alimentación, desplazamiento, exploración, marcación de territorio, afiliación, mantenimiento del cuerpo, y sumisión). Este estudio permite identificar la importancia que tiene conocer ciertas vocalizaciones en esta especie, para entender su estructura social, ecología y ayudar así a su estado de conservación desde la educación.
Reconociendo los saberes de la nutrición: hábitos alimentarios de los estudiantes del Instituto Pedagógico Nacional (IPN)
Authors: Santana Avella Diego Alejandro
Published: August 2023

El presente trabajo surge a partir de los resultados obtenidos en la práctica pedagógica II realizada en el Instituto Pedagógico Nacional con los estudiantes del grado séptimo del curso 701, orientada por la línea de investigación Trayectos y Aconteceres: estudios del ser y del quehacer del maestro desde la pedagogía. El objetivo de la intervención en el aula consiste identificar las prácticas nutricionales de los estudiantes partiendo de los hábitos alimentarios que ellos tienen, por tal motivo resulta relevante reconocer los saberes que tienen los estudiantes acerca de la importancia de los alimentos en sus vidas. Por ello, la investigación desarrollada es de tipo cualitativo con un enfoque descriptivo, en el cual él maestro en formación tiene la oportunidad de analizar los diferentes escritos realizados por cada uno de los estudiantes a partir de experiencias cotidianas que tienen en su entorno familiar y académico; para esto, se plantean una serie de actividades con el fin de que los estudiantes se sientan participes en todo momento y sientan que sus opiniones e ideas son muy importantes en el desarrollo de la práctica pedagógica. De esta manera, se logra evidenciar que los estudiantes tienen una visión mecánica del aporte energético de los alimentos en el funcionamiento del cuerpo, además con frecuencia los estudiantes dicen que la hora de comer es importante porque les permite compartir tiempo en familia.
La evolución y los aprendizajes esperados: el paso de la secundaria al nivel medio superior en México
Authors: Valencia González Karen Beatriz , Noguera Solano Ricardo , Galindo Miranda Nora Elizabeth
Published: August 2023

El pensamiento evolutivo debería enseñarse como un programa que integra lo vivo y que ofrece explicaciones en distintas áreas del desarrollo humano; sin embargo, no es así. En México, el bachillerato es el último nivel formal en donde se puede contribuir a la alfabetización científica del ciudadano; quien podría comprender diversos fenómenos de importancia, tales como la resistencia bacteriana a los antibióticos, las dificultades encontradas en el control de pandemias, como el VIH, entender el origen y transformación de los virus, como el SARS-CoV 19, entre otros. Considerando esa importancia, el objetivo de este trabajo es identificar la concordancia entre los aprendizajes constructivistas esperados sobre evolución biológica de los planes de estudio de educación básica (secundaria y nivel medio superior) y los instrumentos de evaluación que se utilizan a través del análisis de las preguntas formuladas en las principales guías de exámenes de admisión al nivel medio superior en México. La metodología se basó en hacer una revisión de los planes de estudio actuales; así como del fundamento y lineamientos del examen de admisión realizado por el CENEVAL. Se recopilaron las preguntas sobre evolución de la Guía del Examen Nacional de Ingreso a la Educación Media Superior (EXANI-I) 2019, la Guía 2019 para preparar el examen de selección para ingresar a la educación media superior (UNAM) y la Guía interactiva del concurso de asignación a la Educación Media Superior de la Zona Metropolitana de la Ciudad de México (COMIPEMS) 2019. El nivel de complejidad de las preguntas fue analizado de acuerdo con la Taxonomía de los objetivos de la educación. (Bloom, 1975). Con base en los resultados se ha identificado que existe una gran discordancia entre el nivel de los aprendizajes esperados sobre evolución biológica y los reactivos formulados para evaluarlos en el examen único de admisión a nivel medio superior en México.
Experiencias rurales de “La Ruta del Gorrión”: una propuesta pedagógica de educación ambiental en torno al Gorrión-Montés Paisa (Atlapetes blancae) en Antioquia, Colombia
Authors: Araujo Guerrero Vanessa Adelina , Cardona Vargas Yenny Marcela , Lopera-Salazar Andrea , Chaparro- Herrera Sergio
Published: August 2023

En esta bio-crónica se presenta “La Ruta del Gorrión”, una propuesta pedagógica de educación ambiental implementada con 109 niños de 4 escuelas primarias rurales del Altiplano Norte de Antioquia, Colombia, durante julio de 2019 y noviembre del 2021. El objetivo de esta propuesta fue promover el reconocimiento del Gorrión-Montés Paisa o Montañerito Paisa (Atlapetes blancae), como ave emblemática y endémica de la región, destacando aspectos de su historia natural, su contexto biogeográfico, así como factores que amenazan su permanencia y conservación en el Altiplano Norte de Antioquia. Con el propósito de motivar la curiosidad de los estudiantes, la observación del entorno natural e impulsar el trabajo en equipo, se diseñaron juegos y actividades utilizando como referentes la técnica de gamificación y la metodología Enseñanza de Ecología en el Patio de la Escuela (EEPE). La implementación de esta propuesta pedagógica, a través de la exploración proactiva, la reflexión, la indagación y el trabajo en equipo, propició el reconocimiento del Gorrión-Montés Paisa como ave emblemática y endémica de la región, además se generaron espacios para apreciar la biodiversidad local y estimular la apropiación social del territorio.
PILEO de la biodiversidad del Colegio Charry IED “Conozco la naturaleza para amarla"
Authors: Afanador Castañeda Héctor Alexander
Published: August 2023

Consideramos pertinente informar que el articulo emerge de la sistematización y resultados de un proyecto del Colegio Charry IED que tiene como propósito la construcción de conocimientos sobre la biodiversidad, especialmente en especies de flora y fauna, desde sus intereses a través del proceso unísono de lectura, escritura y oralidad con o sin la integración de TIC. Para ello, se desarrolla una estrategia de diseño en grado noveno y grado séptimo cuyo propósito es buscar información especializada sobre el contenido biológico–ecológico para la re-construcción de narrativas sobre animales. En cuanto a los resultados del PILEO de la biodiversidad se destaca la articulación con otras disciplinas y avances en la construcción de conocimiento escolar sobre la biodiversidad producto de la deconstrucción y reconstrucción de informaciones de las especies, especialmente animales. Esto permite concluir que, la estrategia PILEO de la biodiversidad incentiva la motivación sobre el aprendizaje de lo biológico y ecológico, desarrolla los procesos de lectura, escritura y oralidad científica necesarios en la alfabetización tecno-científica e interioriza y despierta emociones, conductas y valores biofílicos para conocer y amar lo vivo o lo natural.
Colecciones Biológicas y virtualidad: un recurso para la enseñanza de la biodiversidad
Authors: Darrigran Gustavo , Custodio Heliana , Legarralde Teresa Inés , Vilches Alfredo Martín
Published: August 2023

La pérdida de la biodiversidad es un hecho, pero existe la tendencia en sociedades como argentina en desconocer este suceso. La educación es clave para revertir esta situación. Sobre esta base y a través del uso de Colecciones Biológicas en la formación del Profesorado de Ciencias Biológicas pertenecientes a las Universidades Nacionales y a los Institutos Superior de Formación Docentes, se plantea la problemática de la perdida de la biodiversidad en el aula. En este trabajo se presentan y discuten los aportes de las Colecciones Biológicas relacionadas con los conocimientos generados a través de la actividad científica y sus proyecciones en el campo educativo. Estas colecciones constituyen un recurso didáctico óptimo para fortalecer y aumentar la calidad de los procesos educativos, ya sea como instrumento para las clases presenciales como virtuales. Asimismo, se destaca que las Colecciones Biológicas por sí mismas no son material educativo, sin un docente que las utilice como tal y las introduzca en el circuito pedagógico. Por último, se destacan las Colecciones Biológicas virtuales como recursos didácticos útiles de implementar, ya que permiten romper barreras físicas, temporales y universales a través de la vinculación de material digitalizado y de internet.
Diversidade, Direitos Humanos e Direito à Vida no ensino de Ciências Naturais
Authors: Amaral Sales Tiago , Monteiro Rigue Fernanda
Published: August 2023

Este texto é produzido ao modo ensaístico e objetiva traçar discussões em torno dos desafios e potências de mobilizar as questões de Diversidade e Direitos Humanos no ensino de Ciências Naturais. Defende-se que tais temas devem ser articulados com a Didática das Ciências, tanto na formação de professores/as quanto no ensino básico. Por fim, apresentam-se horizontes para o cultivo de um ensino de Ciências Naturais calcado no direito da vida, como linha intensiva para produção de práticas educativas significativas, ampliando as dimensões contempladas nos campos de Diversidade e Direitos Humanos.
Derin öğrenme ve belirsizlik ölçeği ile akciğer kanserinin erken teşhisi
Authors: ÜZÜLMEZ Sema , ÇİFÇİ Mehmet Akif
Published: August 2023

Derin Öğrenmenin (DÖ) teknikleriyle erken kanser tanısı son dönemlerde araştırmacılar arasında en çok üzerinde durulan konu olmuştur. Ayrıca pek çok araştırmada görüldüğü üzere DÖ’nın tıp alanında kullanımı günümüzde daha da önem kazanmaktadır. Araştırmacılar sağlık alanında çoğunlukla kanser ve kanser türleri teşhis ederken DÖ tekniklerinden yararlanmaktadır. Bunun başlıca nedeni akciğer kanserinden ölüm riskinin yüksek olmasıdır. Bu tür hastalıkların tanısında BT görüntülerinin net olmamasından dolayı, doğru karar vermede uzmanlar görüş ayrılıkları yaşamaktadır. Bu ve benzeri hastalıkları erken ve doğru tanılayabilen ve daha güvenilir sonuçlar verebilen DÖ karar verme mekanizmaları bir seçenek haline gelmiştir. Yapılan araştırmalara göre akciğer kanseri, dünya çapında ölümlerin en önde gelen nedenleri arasındadır. Akciğer kanseri sadece 2019 yılında tahmini 1,76 milyon insanın ölümden sorumludur. Sebepleri artıkça (ortalama aile öyküsü, sigara, yüksek tansiyon ve diğer popüler tıbbi nedenler) ölüm oranı ortalaması %80'in üzerinde arttığı gözlemlenmiştir. Olgular erken tanı konup, tedavi edilirse kanser kaynaklı ölümlerin oranının azalmakta olduğu görülmüştür. Hastalığın doğru saptanması tedavi edilmesinde önemli rol oynamaktadır.

Bu çalışmada Ayrık Dalgacık Dönüşümü (ADD) yaklaşımı ile DÖ tekniği birleştirilerek, 6053 akciğer tomografi veri seti (veri kaynağı, yaş grubu, coğrafi bölge vb. kısa bilgi) üzerinde işlem yapılmıştır. Hastanın kanser olup olmadığı, kanser olduğu takdirde ise bunun iyi huylu (benign) ya da kötü huylu (malign) olduğuna karar verilmesine çalışılmaktadır. Bilgisayarlı Tomografi (BT), görüntülerde öncelikle görüntü işleme aşamalarının yanı sıra ADD ile öznitelik çıkarımı yapılıp elde edilen veriler DÖ ’ya girdi verisi olarak kullanılır. Bu çalışmada iki metot önerilmiştir. Birinci yöntemde VGG-16, Inception v4, MobileNet v3 kullanılırken ikinci yöntemde AlexNet yöntemi uygulanmaktadır. Bu yöntem hem ADD kullanımı hem de iki aşamalı olması yönüyle yaygın kullanılan diğer tekniklerden farklıdır. Deneysel sonuçların yüksek performans gösterdiğini ve AlexNet’in %99, 86, MobileNet v3’ün %98,00, VGG-16 %95,50, Inception v4’ün ise %96,03 doğrulukta sonuç verdiği belirlenmiştir. Böylece akciğer hastalıklarının BT görüntülerinde kanser olup olmadığı, kanser ise hangi aşamada olduğu konusunda ön bilgi elde edilebilmektedir.
Control Law Synthesis for Flexible Joint Manipulator Based on Synergetic Control Theory
Authors: Nguyen C. X. , Tran S. V. , Phan H. N.
Published: August 2023

In this paper, the authors present the synthesis of control laws for the flexible joint manipulator to stabilize the oscillation and track the desired trajectory. To solve this problem, the article applies synergetic control theory. In synergetic control theory the desired values are impressed as invariants. So the invariants act as the control objectives of the system and our task is to find the control laws for them. Using this theory, the control law is designed to ensure the movement of the closed-loop system from an arbitrary initial state into the vicinity of the desired invariant manifold, i.e. the objective attracting manifold. Thereby, not only reach the necessary invariant but also ensure the asymptotic stability of the entire system. The quality of the proposed control law is shown through simulation results on Matlab and its efficiency is shown by comparison with backsteping control law.
Methods for Damping Payload Oscillations and Robust Control of an Overhead Crane Trolley Considering the Dynamics of the Electric Drive
Authors: Antipov A. S. , Krasnova S. A.
Published: August 2023

The control plant is a trolley of a single-girder overhead crane designed to move a suspended payload along the span. Features of the plant: one control with two degrees of freedom, the uncertainty of mass-inertial characteristics, and the action of non-smooth uncontrolled disturbances. We consider the reduced dynamics of the DC motor in the mathematical model, where the power supply voltage of the armature circuit is a control. Here, parametric and external disturbances affecting the mechanical subsystem become unmatched (i.e., they act through different channels with control) and cannot be directly compensated. This paper considers two main problems, each of which uses S-shaped smooth sigmoid functions with saturation. The first problem is to design the trajectory of the trolley considering the design constraints on its velocity and acceleration. Tracking such a trajectory should ensure the smooth transfer of the payload in a given time and the damping of its oscillations. For this purpose, a reference trajectory has been developed in the form of the sum of a sigmoid function and an integral of the swing angle. The proposed solution is not inferior in the efficiency to existing analogs, while its implementation requires less computational costs. The second problem is to develop a robust tracking system. For this purpose, a procedure for block synthesis of discontinuous true control and sigmoid fictitious controls (local feedbacks) has been developed. The latter are smooth analogs of discontinuous control and make it possible to suppress unmatched disturbances with a given accuracy without identifying them. In contrast to standard linear local feedbacks, the boundness of sigmoid fictitious controls does not lead to a large overshoot of state variables, which is critical in the presence of design constraints. In addition, such fictitious controls are implemented in mechanical plants and do not contribute to the wear of the actuator, which inevitably occurs when discontinuous fictitious controls are used. We presented the results of numerical simulation and carried out a comparative analysis of closed-loop systems with various fictitious controls: linear, discontinuous, and sigmoid. The results of the numerical simulation demonstrated the effectiveness of the developed approach.