bluuebunny/crossref_metadata_2025 huggingface dataset:
IMPROVING THE THERMAL STABILITY OF CARBON-CARBON COMPOSITE MATERIALS USING SELF-PROPAGATINGHIGH-TEMPERATURE SYNTHESIS
Authors: Середа Д.Б.
Published: February 2024

Abstract.This research focuses on the development of effective protective coatings for carbon-carbon composite materials (CCСM), which are important components in high-temperature processes in aerospace engineering. The application of CCСM is limited by their sensitivity to oxidation, erosion and burnout in gas streams. In light of these limitations, our work is aimed at creating protective coatings using the method of self-propagating high-temperature synthesis, which provide increased performance and extend the service life of composites. The main task of the research is to identify the optimal compositions of powders for chromium-doped protective coatings through the SHS process. Various methods of obtaining protective coatings were analyzed, including chemical-thermal methods and methods of saturation from the liquid phase, revealing the peculiarities of the interaction of coatings with the CCСM matrix and changes in their mechanical characteristics. In addition to the classical methods of obtaining coatings, the method of surface saturation from the solid phase in an active gas environment as part of the SHS process was investigated. This method provides high-quality coating surfaces, reduction of processing time and the possibility of reaching high temperatures, depending on the composition of the SHS mixture. An important element of the research is the analysis of modern publications and research in the field of protective coatings. Special attention is paid to the problems associated with chemical interaction with the matrix of CCСM and uneven formation of carbide phases along the cross-section of the material. Experimental studies include a factorial experiment to identify the compositions of powder mixtures that provide high wear resistance. Various independent variables, such as chromium, silicon, titanium and aluminum content, are considered for their effect on the physical and mechanical properties of the coatings. The study focuses on the optimization of the parameters of thermal autoinitiation of SHS mixtures under process conditions. The regression equation for evaluating the dependences of the wear resistance of coatings on auto-initiation parameters and the content of alloying elements is given. The analysis of the research results includes the construction of three-dimensional graphic dependencies to optimize the wear resistance of coatings in the Cr-Al-Ti and Cr-Al-Si systems. Chromoalumosilicization of the coating showed better wear resistance, exceeding the wear resistance of untreated samples by 2.6-3.2 times, which allows the use of this technology for parts of aerospace equipment. It is interesting that the porous surface of coatings obtained by the SHS method prevents the penetration of oxygen into the material, contributing to the formation of oxide protective membranes, such as SiO2, TiO2, Cr2O3, Al2O3.
Discriminatory Practices Against Non-Native English Speaker Teachers in Colombia’s Language Centers: A Multimodal Study
Authors: Montoya Adriana , Correa Doris
Published: February 2024

This multimodal/multimedia discourse analysis explored institutional practices regarding native and non-native English speaker teachers in five language centers in Medellín, Colombia, as reflected in interviews with coordinators and teachers, language centers’ websites, social media, and recruitment materials. Data were analyzed using content and multimodal discourse analysis. Findings unveiled that, in general, these language centers favor native English speaker teachers and discriminate against non-native English speaker teachers in multiple ways, as the former are privileged in job searches, are asked fewer hiring requirements, have more room for negotiation, earn higher salaries, and enjoy more perks.
Examining the Wellbeing of In-Service EFL Teachers in a Spanish Context
Authors: Carvajo Lucena Carmen , Guijarro Ojeda Juan Ramón
Published: February 2024

This paper aims to extend our understanding of the factors underlying teacher wellbeing and the stress-coping mechanisms that professionals from the field use in their daily lives. The study focuses on the point of view of EFL teachers working in Andalusia, the southern region of Spain. Through semi-structured interviews and using Bronfenbrenner’s ecological theory for the content analysis of data, the project identifies the primary sources of distress and growth that participants link to their profession. Key among them are emotional competence, the school environment, legislation, and boundaries. The study also pinpoints the main stress-coping strategies participants were already implementing in their lives to fight against feelings of burnout. Especially relevant is the practice of hobbies, professional training, and establishing boundaries.
Ecuadorian EFL Preservice Teachers’ Attitudes Toward Pronunciation Features
Authors: Abad-Célleri Mónica , Argudo-Serrano Juanita , Fajardo-Dack Tammy , Cabrera Patricio
Published: February 2024

This mixed-method study examines Ecuadorian preservice English as a foreign language teachers’ cognition regarding pronunciation models and targets, identity, and confidence. Data were gathered through a self-reported, anonymous online questionnaire. Factor analysis and Spearman’s correlations were conducted on the quantitative data, and content analysis on the qualitative data. The results revealed that the participants highly value the native speaker model of pronunciation, are dissatisfied with their nonnative English pronunciation, are not interested in showing their Ecuadorian identities when speaking English, and are still not confident in their English pronunciation. The findings are discussed in light of the implications for pronunciation teachers.
Teacher and Peer Feedback on English as an Additional Language Writing: The Role of Social Representations
Authors: Zaccaron Rafael , Cristina Puntel Xhafaj Donesca
Published: February 2024

This mixed-methods study aims to investigate the bias in peer feedback. Thirty-two English as an additional language learners gave each other anonymous feedback on their texts. Half of the participants received feedback from their teacher disguised as peer feedback, while the other half received actual peer feedback. Data were collected through drafts of two essays, feedback, and a questionnaire. Results indicate that although participants reported trusting teacher feedback more, the quantitative uptake of feedback was similar regardless of the source. Data analysis suggests that the teacher’s and peers’ social representation plays a more significant role in uptake than the feedback itself.
Colombian University Students’ Experiences as Users of the English Language During International Mobility
Authors: Bello Paula Vanessa , Cárdenas Melba Libia
Published: February 2024

This exploratory case study analyzes Colombian university students’ experiences as English users during international mobility. Data collected through surveys and interviews were examined based on content analysis and principles of grounded theory. The students’ self-perceived English proficiency and communicative performance before and during international mobility were analyzed, while challenging areas were identified. The results evidence that mobility students have insufficient levels of English proficiency to engage in academic and social activities due to inadequate production skills and a lack of practice. The students also perceive university academic English opportunities for practice as basic, and they underutilize practice spaces. Nonetheless, they highlight that active engagement in autonomous language exposure and developed interpersonal skills positively impact their perception of language performance.
Application of a Multimodal Transformer to the Prediction of the Yield of Saturated Hydrocarbon Compounds from Heavy Crude Oil in the Presence of Catalysts
Authors: Pylov Petr Andreevich , Maitak Roman Viacheslavovich , Zaitseva Elizaveta Georgievna
Published: February 2024

Heavy oil fields are a promising energy source in the future due to the depletion of natural sources of light oil. However, extraction, transportation and refining of heavy oil is significantly more complicated than light oil - difficulties arise at almost all technological stages. One of such stages is laboratory analytics of heavy oil and selection of the most optimal catalyst for extraction of required fractions from crude oil sample. Different catalysts are actively used in petrochemical laboratories, but special attention is paid to those of them, the basis of which is metal. In this study, catalysts based on six different metals namely zinc, nickel, copper, manganese, lead and sodium were analyzed. In order to analyze the yield ratios of the required components from the crude heavy oil composition, it is necessary to test different types of catalysts sequentially on a base sample. The yield of different hydrocarbons on a small volume of oil can be reliably estimated by chromatographic study, which takes about 68 minutes for both the base oil sample and the different catalysts. Since testing 6 different catalysts would require almost 7 hours of chromatographic analysis, a rational solution would be to apply data mining techniques to this task. A multimodal transformer model was proposed to solve this problem. It takes as input two modalities: a chromatogram of a sample of pure crude oil presented as graphical data and accompanying tabular data, which are also generated by the chromatograph and consist of text and numbers. At the output, the model produces predictive tabular data that formalize the redistributed group composition of the oil and describe both the names of the newly produced hydrocarbons and their two qualitative characteristics: time and yield area. Obtaining the prediction makes it possible to significantly reduce the time, hardware and human resources required to select the right type of catalyst in petrochemical laboratories. In the process of the study, it was found that training of the intellectual model on the data of one field allows to perform further similar forecast with acceptable accuracy for the data of another heavy oil field. The magnitude of the prediction error of the intelligent model satisfies the requirements set by the petrochemical laboratory for practical application of the multimodal transformer.
Application of Physics-Informed Neural Network on the Example of Modeling Hydrodynamic Processes that Allow an Analytical Solution
Authors: Koshelev Konstantin Borisovich , Strijhak Sergei Vladimirovich
Published: February 2024

We consider an actual approach to develop a physically based neural network for solving model problems for the Kovazhny flow, for the geophysical Beltrami flow, and for the flow in a section of the river by the shallow water theory. Physics-informed neural networks (PINN) allow to significantly reduce the computation time compared to conventional computations. There is a different analytical solution for each model flow. The architecture of the DeepXDE software library, its composition by modules, and fragments of program code in the Python programming language are discussed. The PINN model is tested on a test sample. The prediction is evaluated using the MSE metric. The fully connected neural network can contain 4, 7, 10 hidden layers with the number of neurons 50, 50, 100 respectively. The influence of hyperparameters of the neural network on the magnitude of the prediction error is discussed. The calculations performed on a server with Nvidia GeForce RTX 3070 card can significantly reduce the training time for PINN.
Modeling the Icing Process for the Hull of a Fishing Vessel on the Surface of the Water, Taking into Account the Influence of Waves
Authors: Koshelev Konstantin Borisovich , Osipov Andrei Vladimirovich , Strijhak Sergei Vladimirovich
Published: February 2024

Studying the icing of ships is an urgent task. The paper considers the problem of modeling the flow of a model vessel with a gas-droplet flow and the occurrence of the icing process. Initially, the simulation was performed using the interDyMFoam solver, taking into account the assignment of the Stokes wave of the first kind to determine the position of the droplets. Further modeling was carried out using the iceFoam solver, which is based on the Euler-Lagrangian method for describing the gas-droplet flow. The considered model of a fishing vessel had a scale of 1:10. The position of the droplets was set at the entrance to the calculated rectangular domain. The estimated grid had from 1.5 to 10 million. cells. With the help of calculations, the trajectories of droplet movement around the hull of the vessel, the distribution of the air velocity field, the position of the water film and the thickness of ice on the deck surface were obtained. The mass of the overgrown ice was estimated. The simulation was performed on the computing cluster of the ISP RAS. One typical calculation was run on 48-96 computing cores and lasted no more than three days.
Optimal estimation of the local time and the occupation time measure for an α-stable Lévy process
Authors: Amorino Chiara , Jaramillo Arturo , Podolskij Mark
Published: February 2024

A novel theoretical result on estimation of the local time and the occupation time measure of an α-stable Lévy process with $\alpha \in (1,2)$ is presented. The approach is based upon computing the conditional expectation of the desired quantities given high frequency data, which is an ${L^{2}}$-optimal statistic by construction. The corresponding stable central limit theorems are proved and a statistical application is discussed. In particular, this work extends the results of [20], which investigated the case of the Brownian motion.
Równość materialna w wyborach do Senatu
Authors:   Uniwersytet Łódzki, Składowski Konrad
Published: February 2024

The article analyzes the issue of material equality in elections to the Senate. The electoral system in elections to the upper house of parliament in Poland radically violates the principle of material equality of elections. It is characterized by a large disproportion in the size of electoral districts in terms of the number of inhabitants in individual electoral districts. The current division into electoral districts, resulting from the annex to the Electoral Code, violates its provisions. It is also controversial from other points of view. It also raises the question of its compliance with the principle of a democratic state of law.
Glosa do wyroku Trybunału Sprawiedliwości z 9 czerwca 2022 r., w sprawie EP p. Préfet du Gers i Institut National de la Statistique et des Études Économiques (INSEE), C-673/20
Authors:   Katolicki Uniwersytet Lubelski Jana Pawła II, Grądzka Ilona
Published: February 2024

The commented judgment was formed by the Court of Justice in the term of preliminary ruling, which was asked in the argument between a United Kingdom national who had been resident in France since 1984. As a result of the United Kingdom’s withdrawal from the European Union, the applicant was deprived of her right to vote in European Parliament elections and in municipal elections in their Member State of residence during that period. The issue in dispute concerns citizenship of the European Union and the rights associated with it, including electoral rights. The Court of Justice has unequivocally recognised that when a Member State withdraw from the European Union, its citizens lose their status as citizens of the Union and any privileges attached to it.
RBM15-Mediated N6-Methyl Adenosine (m6A) Modification of EZH2 Drives the Epithelial-Mesenchymal Transition of Cervical Cancer
Authors: Wang Ruixue , Tan Wenhua
Published: February 2024

RBM15 functions as an oncogene in multi-type cancers. However, the reports on the roles of RBM15 in cervical cancer are limited. The purpose of this study was to investigate the potentials of RBM15 in cervical cancer. RT-qPCR was conducted to determine mRNA levels. Western was carried out to detect protein expression. CCK-8, colony formation and EdU assays were conducted to determine cell proliferation. Scratch and transwell assays were conducted to determine cell migration and invasion. MeRIP assay was conducted to determine N6-methyl adenosine (m6A) levels. Luciferase assay was conducted to verify the m6A sites of EZH2 and binding sites between EZH2 and promoter of FN1. ChIP assay was conducted to verify the interaction between EZH2 and FN1. The results showed that RBM15 was upregulated in cervical cancer patients and cells. Moreover, high levels of RBM15 predicted poor clinical outcomes. RBM15 knockdown inhibited the proliferation and epithelial-mesenchymal transition (EMT) of cervical cancer cells. RBM15 promoted the m6A modification of EZH2 as well as its protein translation. Additionally, EZH2 bound to the promoter of fibronectin 1 (FN1) and EZH2-FN1 axis is the cascade downstream of RBM15. Overexpressed EZH2 antagonized the effects of RBM15 knockdown and promoted the aggressiveness of cervical cancer cells. In summary, RBM15/EZH2/FN1 signaling cascade induces the proliferation and EMT of cervical cancer. Therefore, RBM15/EZH2/FN1 signaling may be a promising strategy for cervical cancer.
The strength of the phylogenetic signal in syntactic data
Authors: Hartmann Frederik , Walkden George
Published: February 2024

While phonological change has played a central role in assessing linguistic relatedness since the nineteenth century, the usefulness of syntactic change for this purpose has remained debated – despite recent work on the question with a variety of results. In our study, we analyze the phylogenetic signal of syntactic data using state-of-the-art Bayesian algorithms and the SSWL database (Koopman 2012–). With the phylogenetic model, we infer a minimally biased family tree. We find that, generally, the phylogenetic signal in the syntactic dataset is low. The model fails to infer larger-order subgroupings that would be found further back in time. This is in contrast to the clear-cut groupings we can obtain from running this type of model on phonological databases. This raises the question how well these syntactic properties encode phylogenetic information. As it stands, the model fails to provide evidence for strong phylogenetic signal despite the rich dataset and methods.
English middles and implicit arguments
Authors: Bruening Benjamin
Published: February 2024

The proper analysis of English middles (Politicians bribe easily) has always been a matter of debate. I argue that they involve three crucial components: (1) A base-generated subject that is interpreted as the logical internal argument; (2) a logical external argument that is not syntactically projected at all; (3) the semantics of an ability modal. Regarding (1), I provide new data indicating that the surface subject of the English middle is not derived by A-movement and has no representation in the VP. I propose that the subject is interpreted as the logical internal argument by means of two mechanisms independently proposed to account for other facts: (a) a head that binds a verb’s internal argument, proposed for implicit arguments by Bruening (2021); and (b) an abstraction rule triggered by certain varieties of Voice in English, proposed to account for properties of the verbal anaphor do so by Bruening (2019). The abstraction rule causes the unexpressed internal argument of the verb to be bound by the base-generated surface subject of the middle. As for the logical external argument, I show that it is present only semantically and not syntactically. Putative binding in both short passives and middles is logophoric, not syntactic. The final component of the analysis is the semantics of an ability modal. English middles are not necessarily generic, they are not necessarily dispositional, they are not necessarily stative, and they do not require adverbs. The middle, like the passive, is a morphosyntactic category, and it is not useful to try to define a “middle semantics” cross-linguistically.
FEATURES OF TEACHING COMPUTER SCIENCE TO AGRICULTURAL STUDENTS
Authors:   Kyrgyz National Agrarian University named after. K. I. Scriabin, Kudaibergenova Zhyldyz , Sagyndykova Kenzhe ,   Kyrgyz National Agrarian University named after. K. I. Scriabin
Published: February 2024

The article discusses the purpose of studying computer science, computer, their software, the practical development of computer technology, the acquisition of Internet skil,ls and the use of acquired knowledge in the study of other disciplines. Informatics is one of the fundamental disciplines in the training of specialists at our university. The knowledge gained in the study of computer science is the basis for the application of information technology, as well as preparing students for further professional activities. At the request of the time, while receiving higher education, a specialist must have computer literacy, i.e. be able to use the software already created by specialists that accompanies each computer, therefore, in order to have computer literacy, a specialist must be familiar with the basics of computer science and information technology. Keywords: informatics, computer literacy, information technology, information culture.
CONTENT AND METHODOLOGICAL FEATURES OF IMPROVING THE MATHEMATICAL TRAINING OF BIOLOGY STUDENTS
Authors:   Kyrgyz National University named after Jusup Balasagyn, Munapysova Gulnara , Israilova Gulmira ,   Kyrgyz National University named after Jusup Balasagyn, Salieva Gulzhan ,   Kyrgyz National University named after Jusup Balasagyn
Published: February 2024

The role of mathematical methods and computer technologies in the study and prediction of biological processes is increasing every year. Such global projects as decoding the human genome, population-genetic, biological research, vaccine development, computer- mathematical modeling of the spread of infectious diseases, etc. require serious mathematical apparatus. Meanwhile, in practice, the level of mathematical training of biology students, and the use of mathematical methods in teaching special disciplines are not satisfied with modern requirements. The relevance of the problem of improving the mathematical training of biology students requires a rethinking of the content and methods of teaching mathematics. In our article, based on the analysis of scientific research in this area, systematization, and generalization of teaching experience, new approaches to teaching mathematics, i.e. to the implementation of professionally directed training of biology students are substantiated. Keywords: professional training, mathematical training, professionally directed training, biology students, tasks of biological content, biological interpretation of mathematical concepts.
CONDUCTING A COMPARATIVE ANALYSIS OF THE DEVELOPMENT OF PHYSICAL QUALITIES OF THE EXPERIMENTAL AND CONTROL GROUPS OF STUDENTS WITHIN THE FRAMEWORK OF TRAINING IN SKIING SPORTS IN THE CONDITIONS OF THE HIGHLANDS
Authors:   Naryn State University named after Satybaldi Naamatov, Aidaraliev Abdilnazir
Published: February 2024

In this article, a comparative analysis of the changes that occurred in the physical qualities of students in experimental and control groups as a result of an experimental study on the training of students in skiing in high-altitude conditions will be carried out. The author shares with the public the test results obtained from the students of these groups at the beginning of the experiment and at the end of the experiment, and draws attention to the fact that progress has been made in the development of the physical qualities of the students of the experimental group. The researcher used eight standardized tests to determine the level of physical fitness of students. Students of the experimental group regularly engaged in skiing according to the "Working program of the ski racing circle". And the students in the control group were just doing physical education. At the end of the experimental study, it was found that the training of students in skiing in high-altitude conditions is fully justified in terms of increasing their level of physical fitness, the development of physical qualities, both general and special.
PREPARATION OF HIGHER EDUCATIONAL INSTITUTIONS’ GRADUATES FOR FAMILY LIFE
Authors:   Naryn State University named after Satybaldi Naamatov, Asankulova Mazira , Siyaev Tashtanbek ,   Naryn State University named after Satybaldi Naamatov
Published: February 2024

In the article, the main characteristics of the university graduates’ family modern institute and the result analysis of a pedagogical experiment on preparing university graduates for family life with an analysis on the formation of the family structure traditions of the Kyrgyz nation are considered. Graduates of Naryn State University named after S. Naamatov, Osh State University and K. Tynystanov Issyk-Kul State University on the pedagogical specialty were selected as the object of research. The concepts of marriage, preparation for marriage, choice of a spouse, search for a partner, family relations, rules of family life based on the enduring values and traditions of the Kyrgyz people, the importance of family life, the role of the education in personal qualities, keeping the rules of spouses in the family, relationships and socialization, achievement of goals and other questions are discussed. The levels of readiness for family life were determined and graduates’ views based on the criteria were compared. The pedagogical experiment included certain pedagogical conditions developed during the pedagogical experiment and their results after the pedagogical experiment.
PORTFOLIO IS A METHOD FOR QUALITATIVE EVALUATION OF STUDENTS’ KNOWLEDGE WHEN STUDYING THE COURSE “CALCULUS”
Authors:   Naryn State University named after Satybaldi Naamatov, Ashyrov Erkinbek , Chekirova Gulmira ,   Naryn State University named after Satybaldi Naamatov
Published: February 2024

This article is devoted to using portfolio in evaluation process of students’ knowledge of studying the course "Calculus". Portfolio as a method of qualitative and comprehensive approach to knowledge assessment is gaining great importance. With the portfolio method, the assessment process becomes focused and continuous. The portfolio allows you to build the learning process taking into account the individual characteristics of each student. The portfolio method allows you to take into account all the student’s achievements in acquiring new knowledge, developing personal and professional competencies. The benefits of portfolio method are examined in the context of mathematics education, emphasizing the portfolio method's ability to systematize and to document students' individual achievements and progress. The article also covers the issues of choosing content and portfolio structure, evaluation methods and influence in the learning process. Aspects of introducing portfolios into the learning process for an accurate and comprehensive assessment of students' knowledge in Calculus have been studied.
PATRIOTIC EDUCATION OF FUTURE TEACHERS BY MEANS OF FOLK PEDAGOGY
Authors:   Kyrgyz State University named after I.Arabaev, Zhoroyeva Rahat
Published: February 2024

The article reveals the relevance of folk pedagogy in the patriotic education of young people and defines its main means. The experience of national patriotic education is analyzed. The basic principles of folk pedagogy are highlighted. In the conditions of increasing negative trends that hinder the formation of true patriotism in Kyrgyzstan, it becomes obvious the need to use the experience of folk pedagogy in educating the younger generation in the spirit of patriotism. Folk pedagogy – an integral part of collective folk art - includes the ideas of the people, reflects their ideals, worldview, the idea of educating a person, family, and the younger generation. Society can develop only when the elders pass on the experience gained by the younger ones. Acquiring this experience, each new generation deepens, develops and improves it, supplementing it with new knowledge, discoveries, inventions.
Engines of Destruction: biographies of a museum’s war trophies
Authors:   Queensland Museum, Hadnutt Nick
Published: February 2024

When the First World War commenced in 1914, Queensland Museum was 52 years old. A recognised cultural and scientific leader within the Queensland community, the Museum was supported by the State Government with a mandate to exhibit and research the State’s cultural and natural heritage. At the conclusion of the Great War, Queensland Museum records demonstrate that it was the recipient of four First World War trophies collected under the auspices of the Australian War Records Section. These trophies were initially displayed prominently at the Queensland Museum, however, they fell from favour and were later relocated. With the advent of the centenary of the First World War, these trophies are once again attracting attention through display and research. This paper explores cultural biographies of these weapons and aligns the treatment of these trophies with changing public attitudes to war commemoration thereby considering the role of the Museum in reflecting those attitudes.
Photographic Identification of the Troupe Members of the Wild Australia Show
Authors:   Queensland Museum, Aird Michael , Memmott Paul
Published: February 2024

The ‘Wild Australia Show’ was a travelling troupe of Aboriginal performers who, during 1892–93, performed in Brisbane, Sydney and Melbourne where they were photographed by leading studio portraitists of the time. The vast majority of the over 160 collected photos of the troupe are very poorly provenanced, with the performers’ names and language group identities often inaccurately spelt partly due to being initially mis-heard and mis-pronounced; and in a proportion of cases photos are non-provenanced. This paper contains an introduction to the photographs, names and group identities of the 27 Aboriginal participants who were drawn from the Queensland frontiers, with a description of the methodology of how their identities were derived from a complex, contradictory, but ethnographically limited corpus of data. This research in visual anthropology represents a contribution to correcting the often ethnocentric and racist legacy of colonial Indigenous museum collections – the failure to recognise and acknowledge basic human identity and familial and social affiliations amongst First Nations peoples.
La lucha contra las plagas y enfermedades en los cultivos y la conservación del ambiente
Authors: Portilla Farfán Ing. Agr. Freddy
Published: February 2024

Mientras unos científicos de tendencia humanista entregan su vida en la lucha contra las plagas y enfermedades de los cultivos, buscando obtener mejores cosechas en calidad y cantidad suficientes; otros científicos, han hipotecado su conciencia a grupos interesados que buscan someter a su dominio a la población humana hambrienta no solo de pan, sino de justicia social. Una lucha desigual entre quienes ven en el ser humano y la naturaleza la razón de la existencia, y los otros que lo ven como el lucro de su egoísmo interminable.
El currulao de la aventura: interculturalidad en el Ecuador
Authors: Montaño Escobar Ing. Juan
Published: February 2024

No fue un naufragio en la historia lo que trajo a nuestros abuelos a la actual República del Ecuador, entrando por la actual provincia de Esmeraldas, sino el milagroso escape de las sentinas sociales de aquellos pésimos tiempos. Y llegaron con ansias de vivir las vidas que hasta entonces les habían faltado , con los hijos de la Luna y el Sol inventaron una República de Negros y Zambos Libres. Debió ser el primer gran ejemplo de interculturalidad de la costa pacífica, lo atestigua la pintura de Andrés Sánchez Gallquei de los cimarrones, don Francisco de Arobe y sus hijos, don Pedro y don Domingo. El cuadro testimonia la favorable vecindad de culturas, los cimarrones llevan adornos indígenas que resaltan altivez y autenticidad de nobleza. Están las lanzas con puntas de hierro y la gorguera de moda europea. La cultura africana y la india de la costa pacífica se tantearon, se conocieron y forjaron una querencia que se extendió hasta el esfuerzo bélico, se armaron ejércitos cimarrones de resistencia que defendieron la libertad. Aunque debieron ser maestros en los ajetreos políticos de aquellos tiempos, para poder amenazar con un levantamiento de Esmeraldas a Panamá, si es que no los dejaban vivir en paz. Finalmente la corona española le otorgó a Alonso de Illescas el título de Gobernador de esas tierras y se acabó la guerra.
Democracia y Estado de Derecho
Authors: Saavedra Chang P. Alejandro
Published: February 2024

Una auténtica democracia es posible solamente en un Estado de derecho y sobre la base de una recta concepción de la persona humana1. Lastimosamente, en la actualidad existe la tendencia a acentuar un agnosticismo y un relativismo escéptico como actitud de pensamiento que no hace otra cosa que destruir las bases estructurales de la democracia, pues, al no aceptar la posibilidad de un conocimiento de la verdad que guíe y oriente toda acción política, se tiende a manipular la verdad y a instrumentalizarla hacia intereses partidarios que encubren casi siempre actos de corrupción.
Los salesianos y la lengua de los Shuar
Authors: Bottasso Boetti Dr. Juan
Published: February 2024

La historia de las relaciones entre los salesianos y el idioma shuar es tan rica en datos y nombres que, al intentar relatarla en un espacio reducido, hay que ser necesariamente esquemáticos. Pero antes son indispensables algunas premisas.En un primer momento a los misioneros no les interesó la lengua en sí, ni siquiera como un instrumento para penetrar en la mentalidad del grupo y conocer sus tradiciones, cantos y mitos: lo único que les importaba era traducir el catecismo y poder evangelizar.Además, se debe tener presente que ninguno de ellos poseía una preparación específica en campo lingüístico. Lo que conocían era la gramática de su lengua materna, junto con la latina y la griega, así que su esfuerzo se orientó a colocar la lengua shuar en los esquemas clásicos.
Exploratory genetic analysis in children with autism spectrum disorder and other developmental disorders using whole exome sequencing
Authors: Hamzic Edin , Spahic Lemana , Pistoljevic Nirvana , Dzanko Eldin , Pasic Sanela , Kadric Lejla , Serdarevic Fadila , Hajdarpasic Aida
Published: February 2024

Developmental disorders (DDs), such as autism spectrum disorder (ASD), incorporate various conditions; once identified, further diagnostics are necessary to specify their type and severity. The aim of this exploratory study was to identify genetic variants that can help differentiate ASD early from other DDs. We selected 36 children (mean age 60.1 months) with DDs using Developmental Behavioral Scales (DBS) through “EDUS-Education for All”, an organization providing services for children with developmental disorders in Bosnia and Herzegovina. We further rated children's autistic traits with the preschool version of the Childhood Autism Rating Scale, second edition (CARS-II). We defined ASD if scores were >25.5 and other DDs if scores were <25.5. Diagnosis of ASD and DD were independently confirmed by child psychiatrists. Whole exome sequencing (WES) was performed by Veritas Genetics, USA, using Illumina NovaSeq 6000 (Illumina Inc., San Diego, CA, USA) next-generation sequencing (NGS) apparatus. We tested genetic association by applying SKAT-O, which optimally combines the standard Sequence Kernel Association Test (SKAT) and burden tests to identify rare variants associated with complex traits in samples of limited power. The analysis yielded seven genes (DSE, COL10A1, DLK2, CSMD1, FAM47E, PPIA, PYDC2) to potentially differentiate observed phenotypic characteristics between our cohort participants with ASD and other DDs. Our exploratory study in a small sample of participants with ASD and other DDs contributed to gene discovery in differentiating ASD from DDs. A replication study is needed in a larger sample to confirm our results.
La formación lingüística en los Grados de Maestro: las nociones de ‘competencia comunicativa’, ‘razonamiento crítico’ y ‘género discursivo’ / Linguistic training in teacher degrees:the notions of ‘communicative competence’, ‘critical reasoning’, and ‘discursive genre’
Authors: Fontich Vicens Xavier , Casas-Deseures Mariona , Costa Ana Luisa , Troncoso Marcos
Published: February 2024

In this text we propose to carry out a set of reflections on communicative competence and critical reasoning (from now on CC&CR) with respect to initial teacher training, within the context of academic writing. These are two aspects considered strategic in teacher training and which have already been the subject of specific measures in some universities and autonomous communities in Spain in relation to accessing such training. We provide a conceptual description of the notions of CC&CR and propose a set of measures based on the fact that these competences must be worked on in a transversal way across all the subjects involved in the teaching degrees, drawing on the fundamental concept of “discursive genre”.
Culturing of infective agents from infected wheat leaves v2
Authors: Schwessinger Benjamin , Hill Erin , Solomon Peter
Published: February 2024

This protocols is part of the ANU Biosecurity mini-research project #1 "Plant Pathogen Diagnostics: Visuals, subcultures, and genomics". You will be provided four pots of 3-4 week old wheat plants that have been infected with different wheat pathogens. Each pot has been infected with one major pathogen. You will not know which pot has been infected with which pathogen. However, you will be provided a compendium of 10-15 wheat pathogens that will guide you to identify the infective agent for each treatment group. The fifth treatment group will be uninfected wheat plants which will be clearly identified. You can use treatment group #5 as negative control for your experiments. In total, each group will obtain five pots each: This specific protocol is a step by step guide to culture infective agents out of infected wheat leaves. This process will take three weeks to complete, therefore the protocol is applicable for week 2-5. The final goal is to isolate the disease causing agent, if at all possible, via culture media. Of course not all pathogens are culturable and the protocol is geared towards filamentous pathogens which are the most severe pathogens of wheat in Australia. So the specific approach to culturing and the identity of the disease causing agent defines the possibility of the organism being cultured. Something to keep in mind when interpreting the results. Protocols progress overview: Week 2 you will identify suitable infected leaf material, surface sterilise it, and culture cut leaf pieces on water agar to enable microbial growth. Week 3 you will identify organisms that have grown out of the leaf onto the agar and subculture them onto high nutrient agar plates. Week 4 you will take pictures of the subcutlured organisms and try to classify it them based on morphological features. Week 5 you will take pictures of the subcutlured organisms and try to classify it them based on morphological features.
Cloning, Protein Expression, and Purification of 20S CPs and Assembly Intermediates v1
Authors: Adolf Frank
Published: February 2024

This protocol details methods for cloning, expression, and purification of 20S CPs and assembly intermediates for biochemical and structural analysis.
Purification of Methylglucose Lipopolysaccharides (MGLP) v1
Authors: Marisco Briana
Published: February 2024

Methylglucose lipopolysaccharides (mGLPs) are poly-methylated polysaccharides (PMPSs) that are acylated with short-chain fatty acids, uniquely synthesized by bacteria belonging to the Actinomycetales order. mGLPs are composed of ~20 glucose (Glc) units, most of them O-methylated (6-O-Me-Glc, Glc, and a 3-O-Me-Glc in a ratio of 11:8:1). Acyl functions in mGLPs are heterogeneous and contain acetyl, isobutyryl, succinyl, and octanoyl groups. mGLPs also known as 6-O-methylglucose-containing-lipopolysaccharides are believed to be essential in Mycobacterium tuberculosis and participate in the regulation of lipid metabolism, protecting fatty acids from degradation. Additionally, this cytosolic bacterial component is a potent stimulator of γ9δ2 T cells.
«January» and «June» from the Khanenko Collection: a broad context surrounding small plates
Authors:   Bohdan and Varvara Khanenko National museum of Arts, Kyiv, Ukraine), Apenko Olga
Published: February 2024

The study of two enameled plates from the collection of the Bohdan and Varvara Khanenko National Museum of Arts in Kyiv represents the first comprehensive publication on these pieces, previously unknown to the international art historian community. Diversified in various directions, its primary goal is to outline potential methods of contextualization and interpretation, essential for the future reconsideration of the Khanenko museum's exhibition spaces post-war. Initially, the author delineates the plate's attribution to the Pierre Reymond workshop, establishing their dating and summarizing prior research dedicated to identifying items within the same series. Placing these objects within their historical, religious, and social contexts, the study highlights their usage as part of ceremonial services or 'service d’apparat,' as well as their role as conversation pieces, a term adapted from Elisabeth Currie. Recent studies in the fields of graphic arts and drawing history have updated our understanding of the plates named 'June' and 'January,' providing details that not only allow us to identify graphic models for these enameled pieces (attributed to Etienne Delaune) but also unveil the name of the compositions' conceptual author (Baptiste Pellerin). Furthermore, there is an open discussion regarding the appropriate nomenclature for the service's commanders, suggesting a reconsideration from the previously published 'Chaspoux de Verneuil' to 'Chaspoux,' potentially correcting an anachronism. Finally, the study offers additional details for interpreting secondary decorative elements present on the plates, aiming to supplement and enrich the knowledge within the arsenal of museum curators and art historians concerning these exemplary pieces from the prolific Limoges workshop during the latter part of the 16th century.
Recalibration of the Intensity Prediction Equation in Italy Using the Macroseismic Dataset DBMI15 Version 2.0
Authors: Lolli Barbara , Gasperini Paolo , Vannucci Gianfranco
Published: February 2024

We recompute the coefficients of the intensity prediction equation (IPE) in Italy using the data of the DBMI15 version 2.0 (v.2.0) intensity database and the instrumental and combined (instrumental plus macroseismic) magnitudes reported by the CPTI15 v.2.0 catalog. We follow the same procedure described in the previous article, consisting of a first step in which the attenuation of intensity I with respect to the distance D from macroseismic hypocenter is referred to the expected intensity at the epicenter IE and a second step in which IE is related to the instrumental magnitude Mi, the combined magnitude Mc, the epicentral intensity I0, and the maximum intensity Imax using error-in-variable (EIV) regression methods. The main methodological difference with respect to the original article concerns the estimation of the uncertainty of IE to be used for EIV regressions, which is empirically derived from the standard deviation of regression between IE and Mi and also used for the regressions of IE with Mc, I0, and Imax. In summary, the new IPE determined from DBMI15 v.2.0 is I=IE−0.0081(D−h)−1.072[ln(D)−ln(h)], in which D=R2+h2, h = 4.49 km, and IE can be calculated from the intensity data distribution of the earthquake. If the intensity data distribution is not available, IE can be calculated from the following relationships IE=−2.578+1.867Mw, IE=I0.
FRAME DESIGN OF INLINE SKATES MADE BY ADDITIVE TECHNOLOGY
Authors:   VSB -Technical University of Ostrava, Department of Machining Assembly and Engineering Metrology, Faculty of Mechanical Engineering, Posmykova Eliska , Hruban Jiri ,   VSB -Technical University of Ostrava, Department of Machining Assembly and Engineering Metrology, Faculty of Mechanical Engineering, Mesicek Jakub ,   VSB -Technical University of Ostrava, Department of Machining Assembly and Engineering Metrology, Faculty of Mechanical Engineering, Blaha Roman ,   VSB -Technical University of Ostrava, Department of Machining Assembly and Engineering Metrology, Faculty of Mechanical Engineering, Ma Quoc-Phu ,   VSB -Technical University of Ostrava, Department of Machining Assembly and Engineering Metrology, Faculty of Mechanical Engineering, Hajnys Jiri ,   VSB -Technical University of Ostrava, Department of Machining Assembly and Engineering Metrology, Faculty of Mechanical Engineering, Petru Jana ,   VSB -Technical University of Ostrava, Department of Machining Assembly and Engineering Metrology, Faculty of Mechanical Engineering
Published: February 2024

The aim of the article was to investigate the possibility of topological optimization (TO) of the inline skate frame manufactured through the Powder Bed Fusion (PBF) method of AISi10Mg-0403, an Additive Manufacturing (AM) technique. The study's core objective was to leverage The Altair Inspire software to re-envision the initial CAD model, culminating in an organic and bionic frame design. Incorporating comprehensive load analysis, the research considered various load scenarios, including static mass, dynamic forces, and acceleration during cornering, to ascertain the frame's strength and stability. Topological optimization was excluded within a defined design space, preserving critical functional elements while enhancing performance. The first part of the article is devoted to defining the concepts and nature of AM metallic materials. The practical part follows, in which the design of the skate frame is specified with specific requirements and the procedure of individual steps needed to create its final CAD Model. The work concludes by describing the preparation of the designed optimized frame construction.
PROPERTIES OF GRADIENT LAYERS OBTAINED THROUGH HVOF SPRAYING AND PLASMA CLADDING
Authors:   VSB – Technical University of Ostrava, Faculty of Mechanical Engineering, Dept. of Mechanical Technology, Ochodek Vladislav , Szymura Michal ,   Silesian University of Technology, Faculty of Mechanical Engineering, Dept. of Welding
Published: February 2024

The study discussed in the article aimed to identify the obtainability of a gradient layer made by the High-Velocity Oxygen Fuel (HVOF)-spraying of an NiAl-based coating between a layer made using the plasma cladding process and powder Stellite 6 and a substrate made of structural steel S355JR. Overlay welds obtained in related tests were made using various process parameters as well as various values of current, travel speeds and powder feed rates. The study also involved the performance of macro and microscopic metallographic tests, hardness measurements as well as the analysis of the chemical and phase composition of gradient layers.