bluuebunny/crossref_metadata_2025 huggingface dataset:
Tracking the degradation of carbon steel mechanical properties due to high-temperature hydrogen attack through strain gauge monitoring
Authors: van Zyl A. , Pretorius C.C.E. , Mathoho V.M. , Mostert R.J.
Published: January 2025

The in-service degradation of the mechanical properties of steel components through the damage mechanism of high temperature hydrogen attack (HTHA), is a topic of concern in the refining and green hydrogen industry. This damage mechanism occurs in susceptible steels operating in environments at high temperatures and hydrogen pressures. The current investigation deals with the indirect monitoring of mechanical degradation via tracking of the swelling strain in affected structures. An autoclave with an AISI 316 shell was utilized to simulate accelerated HTHA damage at 550 °C and 46 bar for exposure times ranging from zero to 700 hours. The progress of the HTHA damage was tracked using encapsulated high-temperature strain gauges. The correlation between the swelling strain and mechanical property degradation was studied to develop a methodology for the continuous monitoring of embrittlement. The tensile sample orientation of the carbon steel plate was included as a variable, i.e., samples parallel, transverse, or perpendicular to the plate rolling direction were included, since it has been shown that the sample orientation influences the HTHA damage features.
For the through-thickness orientation, and upon exceeding a threshold value of exposure time, all tensile properties were severely degraded, with values in the order of a 90 per cent reduction being observed.
It was found that the degradation of carbon steel mechanical properties can be correlated to the swelling strain measured during exposure. The critical point for mechanical property degradation in the plate through-thickness orientation, whereafter a severe decrease in the ductility of the material occurs, was found to be in the order of 1% of the total swelling strain measured during exposure, equivalent to 65 microstrain. This threshold was found to be significantly lower than that expected from the literature, where limits of 400 to 1000 microstrain were postulated.
A simafenyő (Pinus strobus L.) termesztésének tapasztalatai a tiszántúl homoki termőhelyein
Authors: Ábri Tamás , Keserű Zsolt , Sóvágó Emese , Rédei Károly
Published: January 2025

Az Észak-Amerikából származó simafenyővel (Pinus strobus L.) kapcsolatos honosítási kísérletek létesítése közel 60 éves múltra tekint vissza hazánkban. A fafaj ökológiai igényét tekintve kiegyenlített, humid éghajlatot kíván, ezáltal nem alkalmas marginálisnak tekinthető termőhelyek erdősítésére. A Tiszántúlon, elsősorban Debrecen térségében létesített simafenyvesek az erdeifenyő (Pinus sylvestris L.) fatermési táblája szerinti IV és V. fatermés osztályba tartoznak. Adott korra vonatkoztatott fatérfogatuk nem tér el szignifikánsan az erdeifenyvesekétől. Vörös tölggyel (Quercus rubra L.) és erdeifenyővel elegyes állományaik sem eredményeztek gyakorlati jelentőséggel bíró fatermés többletet. A lokális klímaváltozás negatív hatásait is figyelembevéve, a simafenyő termesztési lehetőségei a vizsgált térségre vonatkozóan nem perspektivikusak.
A fast algorithm for computing matrix-vector products in the problem of function decomposition into Fourier series on a circle
Authors:   Novosibirsk State Technical University, Russian Federation, Zelenchuk Nikita A. , Terekhov Andrew V. ,   Novosibirsk State Technical University, Russian Federation
Published: January 2025

A significant interest lies in the development and exploration of the potential application of fast algorithms for computing matrix-vector products in the context of transforms on the circle, which will substantially improve the efficiency of calculating Zernike moments. This paper presents an efficient method for compressing transform matrices for Zernike functions based on the Fast Discrete Fourier Transform (FDFT) algorithm and the extra-component method. The proposed approach enables efficient multiplication of the initial transform matrix by a vector using FDFT, significantly reducing the computational complexity of the overall method. It is assumed that matrix compression is performed only once during the preparatory stage, while the number of vectors to be transformed is sufficiently large for the computational costs of this stage to be negligible. This approach reduces the computation time of the matrix-vector product during the processing stage by eliminating matrix elements with magnitudes close to zero. The preparatory stage will require performing of the order of operations, while the computational stage will involve performing arithmetic operations, which is significantly less than the estimate for the direct method of calculating the matrix-vector product. Computational experiments demonstrate the stability, accuracy, and efficiency of the procedures, which makes it possible to substantially reduce the computation time by several orders of magnitude compared to direct matrix-vector multiplication for the current problem of decomposing functions into series according to the Zernike basis.
Synthesis of a polynomial matrix controller that takes into account the inertia of the actuator
Authors:   Novosibirsk State Technical University, Russian Federation, Filiushov Vladislav Yu.
Published: January 2025

In this paper, we consider the synthesis of a quadcopter orientation control system with a small change in rotation angles (near hovering), taking into account the inertia of the propeller-motor groups. The feedback linearization of the orientation subsystem is shown, taking into account the inertia of the propeller groups. The controller is designed using a polynomial matrix synthesis method that provides a given location of the poles of the closed system. To evaluate the results, a comparison with a controller that does not take into account the inertia of the propeller-motor groups is made.
Orientation and positioning control of a multirotor vertical takeoff and landing unmanned aerial vehicle (UAV) in space is inextricably linked with the formation of a motion control vector consisting of a combination of thrusts and aerodynamic moments created by each propeller-motor group. The accuracy and speed of formation of the motion control vector significantly affects the positioning and orientation errors of the UAV. In most studies devoted to the synthesis of UAV control systems, a motion control vector is used without taking into account the dynamics of the propeller-motor groups, which in some cases forces us to reduce the speed of the control system. It is shown that the increase in the control system performance can be limited by inertia, since oscillation occurs, and with further attempts to increase the performance by shifting the desired poles of the characteristic polynomial further into the negative region, the control system becomes unstable. To solve this problem, it is proposed to take into account the inertia of the propeller-motor group. It is shown that due to this, it is possible to increase the performance of the control system. It is also shown that the feedback linearization of the quadcopter orientation subsystem is also affected by the inertia of the propeller-motor group, so it is proposed to perform feedback linearization taking into account the inertia.
Oscilações na demanda por ônibus na Cidade de São Paulo
Authors: Daroncho Celio , Silva Denise Carvalho Miranda da , Martinez Pedro José Perez
Published: January 2025

Accelerated economic growth and urban sprawl at the beginning of the twentieth century significantly transformed the urban landscape, moving residential areas away from urban centers and productive zones, giving rise to the need for urban public transport systems. In 2020, the situation of Urban Public Transport (TPU) became complicated due to the Covid-19 Pandemic, which changed the dynamics of urban displacement, causing significant drops in passenger demand. Thus, this study makes a quantitative analysis of the demand in TPU for buses in São Paulo, based on data on passengers transported/day between January 2014 and December 2023. The objective of the study was to analyse the variations in daily, monthly, and annual demand to verify the behaviour of the data and the post-pandemic situation. The results show that demand suffered normal oscillations between 2014 and 2017 and started to have a downward trend from the second half of 2018, this drop was substantially intensified at the beginning of the Pandemic, from March to May 2020, outlining recovery from June 2020 to July 2021 and enters apparent stability in 2022 and 2023. In the annual daily average, demand falls from 9.5 million in 2014, to 8.6 million in 2019, 6.5 million in 2022 and to 6.6 million in 2023. These last data indicate that demand seems to have defined a new level of travel in the city of São Paulo, which can have a strong impact on mobility and urban accessibility in the city of São Paulo.
Predictions of Multilevel Linguistic Features to Readability of Hong Kong Primary School Textbooks: A Machine Learning Based Exploration
Authors: Xu Zhengye , Li Yixun , Liu Duo
Published: January 2025

Introduction: Readability formulas are crucial for identifying suitable texts for children's reading development. Traditional formulas, however, are linear models designed for alphabetic languages and struggle with numerous predictors.
Purpose: To develop advanced readability formulas for Chinese texts using machine-learning algorithms that can handle hundreds of predictors. It is also the first readability formula developed in Hong Kong.
Method: The corpus comprised 723 texts from 72 Chinese language arts textbooks used in public primary schools. The study considered 274 linguistic features at the character, word, syntax, and discourse levels as predictor variables. The outcome variables were the publisher-assigned semester scale and the teacher-rated readability level. Fifteen combinations of linguistic features were trained using Support Vector Machine (SVM) and Random Forest (RF) algorithms. Model performance was evaluated by prediction accuracy and the mean absolute error between predicted and actual readability. For both publisher-assigned and teacher-rated readability, the all-level-feature-RF and character-level-feature-RF models performed the best. The top 10 predictive features of the two optimal models were analyzed.
Results: Among the publisher-assigned and subjective readability measures, the all-RF and character-RF models performed the best. The feature importance analyses of these two optimal models highlight the significance of character learning sequences, character frequency, and word frequency in estimating text readability in the Chinese context of Hong Kong. In addition, the findings suggest that publishers might rely on diverse information sources to assign semesters, whereas teachers likely prefer to utilize indices that can be directly derived from the texts themselves to gauge readability levels.
Conclusion: The findings highlight the importance of character-level features, particularly the timing of a character's introduction in the textbook, in predicting text readability in the Hong Kong Chinese context.
Facilitating Large Language Model Russian Adaptation with Learned Embedding Propagation
Authors: Tikhomirov Mikhail , Chernyshov Daniil
Published: January 2025

Background: Recent advancements in large language model (LLM) technologies have introduced powerful open-source instruction-tuned LLMs that match the text generation quality of leading models like GPT-4. Despite accelerating LLM adoption in sensitive-information environments, the lack of disclosed training data hinders replication and makes these achievements exclusive to specific models.
Purpose: Given the multilingual nature of the latest iteration of open-source LLMs, the benefits of training language-specific LLMs diminish, leaving computational efficiency as the sole guaranteed advantage of this computationally-expensive procedure. This work aims to address the language-adaptation limitations posed by restricted access to high-quality instruction-tuning data, offering a more cost-effective pipeline.
Method: To tackle language-adaptation challenges, we introduce Learned Embedding Propagation (LEP), a novel method with lower training data requirements and minimal disruption of existing LLM knowledge. LEP employs an innovative embedding propagation technique, bypassing the need for instruction-tuning and directly integrating new language knowledge into any instruct-tuned LLM variant. Additionally, we developed Darumeru, a new benchmark for evaluating text generation robustness during training, specifically tailored for Russian adaptation.
Results: We applied the LEP method to adapt LLaMa-3-8B and Mistral-7B for Russian, testing four different vocabulary adaptation scenarios. Evaluation demonstrates that LEP achieves competitive performance levels, comparable to OpenChat 3.5 and LLaMa-3-8B-Instruct. Further improvements were observed through self-calibration and additional instruction-tuning steps, enhancing task-solving capabilities beyond the original models.
Conclusion: LEP offers a viable and efficient alternative to traditional language-specific instruction-tuning, significantly reducing the costs associated with language adaptation while maintaining or surpassing the performance benchmarks set by contemporary LLMs.
Fighting Evaluation Inflation: Concentrated Datasets for Grammatical Error Correction
Authors: Starchenko Vladimir , Kharlamova Darya , Klykova Elizaveta , Shavrina Anastasia , Starchenko Aleksey , Vinogradova Olga , Lyashevskaya Olga
Published: January 2025

Background: Grammatical error correction (GEC) systems have greatly developed over the recent decade. According to common metrics, they often reach the level of or surpass human experts. Nevertheless, they perform poorly on several kinds of errors that are effortlessly corrected by humans. Thus, reaching the resolution limit, evaluation algorithms and datasets do not allow for further enhancement of GEC systems.
Purpose: To solve the problem of the resolution limit in GEC. The suggested approach is to use for evaluation concentrated datasets with a higher density of errors that are difficult for modern GEC systems to handle.
Method: To test the suggested solution, we look at distant-context-sensitive errors that have been acknowledged as challenging for GEC systems. We create a concentrated dataset for English with a higher density of errors of various types, half-manually aggregating pre-annotated examples from four existing datasets and further expanding the annotation of distant-context-sensitive errors. Two GEC systems are evaluated using this dataset, including traditional scoring algorithms and a novel approach modified for longer contexts.
Results: The concentrated dataset includes 1,014 examples sampled manually from FCE, CoNLL-2014, BEA-2019, and REALEC. It is annotated for types of context-sensitive errors such as pronouns, verb tense, punctuation, referential device, and linking device. GEC systems show lower scores when evaluated on the dataset with a higher density of challenging errors, compared to a random dataset with otherwise the same parameters.
Conclusion: The lower scores registered on concentrated datasets confirm that they provide a way for future improvement of GEC models. The dataset can be used for further studies focusing on distant-context-sensitive GEC.
Sujeto neoliberal y gestión organizacional: nuevas tensiones y articulaciones
Authors: Vazquez Mazzini Marisa
Published: January 2025

Las primeras formulaciones de cultura organizacional referían a la producción cultural específica de cada organización. Los estudiosos del tema le asignaban una función de amalgama que mantenía el tejido social y posibilitaba la emergencia de prácticas compartidas. En los últimos años, sin embargo, la noción parece perder sentido frente al ideario neoliberal que concibe a la acción colectiva como sumatoria de acciones individuales. El neoliberalismo interpela a las personas, en tanto que les plantea un ideal de sujeto integrado por imperativos sociales —ser empresario de sí, reinventarse constantemente o ser resiliente, entre otros— a los cuales quizás no puedan o no quieran amoldarse. Interpela, asimismo, a la gestión al considerar al nosotros organizacional como una simple identidad sui generis. El fortalecimiento de la cultura organizacional —necesaria para hacer frente a los entornos actuales— requiere hoy de un aprendizaje crítico que reoriente el foco hacia la acción colectiva.
¿Qué rasgos caracterizan a la cultura organizacional española? Una revisión desde los principales modelos dimensionales
Authors: Vallejo Peña Francisco Alberto
Published: January 2025

El objetivo del presente trabajo es sintetizar las aproximaciones realizadas al fenómeno de la cultura organizacional en España. Esta revisión aborda una cuestión práctica: las empresas y los profesionales de cualquier cultura, que entran en contacto con entidades españolas para desarrollar colaboraciones o negocios, podrán acceder a un trabajo de revisión académica que facilite afrontar tal contacto intercultural. Para ello se toma como referente metodológico el modelo de dimensiones construido por el Proyecto GLOBE, así como sus antecedentes inmediatos: Hofstede, Schwartz, Trompenaars y Hampden-Turner. También se recurrirá al reciente modelo de Meyer sobre la cultura nacional en el mundo de los negocios, y a las valoraciones realizadas en las recientes publicaciones que abordan la cultura organizacional española.
Western Blot - Frozen cell pellets v1
Authors: Adami Anita , Castilla-Vallmanya Laura
Published: January 2025

This protocol describes how to extract protein from frozen pellets and how to perform a western blot for protein detection.
Using SEM Model for Fighting Diabetes: Strategic Communication Plan in Jakarta City, Indonesia
Authors:   LSPR Institute of Communication & Business, Indonesia, Herari Noprita , Assegaff Syafiq Basri ,   LSPR Institute of Communication & Business, Indonesia, Utomo Anggayuh Gesang ,   LSPR Institute of Communication & Business, Indonesia, Friscillia Ageng Pramathika ,   LSPR Institute of Communication & Business, Indonesia
Published: January 2025

Diabetes mellitus is a significant public health issue, with Jakarta, Indonesia, facing the highest prevalence in the country. The need for effective health campaigns is urgent, especially with Indonesia ranking sixth globally in diabetes-related deaths. Despite existing government efforts, a lack of awareness and understanding of diabetes remains a key factor in the rising number of cases. This highlights the need for an effective strategic communication plan to address diabetes prevention in Jakarta. This study aims to design a strategic communication plan using the Socio-Ecological Model (SEM) to combat diabetes in Jakarta, integrating proactive and reactive strategies through a media network approach. A qualitative research supported by a questionnaire without statistical testing was used, involving interviews with health professionals and diabetes patients. Data from literature studies were also analyzed to inform the campaign framework. The study highlights the importance of proactive strategies, such as mass media and social media activation, along with reactive strategies using fear-based messaging. A media network strategy utilizing QR codes for easy access to information was also found to be effective. A comprehensive communication strategy, engaging the government, local communities, and media, is essential in addressing the diabetes crisis in Jakarta. Further studies should assess the effectiveness of this communication plan and explore its scalability to other regions with high diabetes prevalence, focusing on long-term health outcomes.

Keywords: Anti-diabetes campaign, communication in healthcare, propaganda PR strategy, socio-ecological model, strategic communication plan.
The Role of Penalties, Pressures and Perceived Effectiveness: A Replication Study of Generation Z's Information Security Behaviors
Authors: Kaur Joti , Madhuvarshi Alisha , Smith Kane , Dhillon Simran , Dhillon Gurpreet
Published: January 2025

Effective management of information security remains of paramount importance. While end users are often the focus in terms of policy compliance, Generation Z's behaviors in information security have not received much interest. Monitoring and influencing Generation Z behaviors poses substantial challenges in information security. In this study, we perform a methodological replication of Herath and Rao’s (2009) theoretical model to examine the influence of penalties, external pressures, and perceived effectiveness in the context of Generation Z’s adherence to information security policies. Our research draws on survey responses collected from 224 Generation Z individuals, with our findings underscoring that the influence of intrinsic and extrinsic motivators may be contextually dependent. For example, unlike Herath and Rao, we found that extrinsic motivation factors related to penalties were both insignificant for Generation Z. But, similar to the original study, we found that extrinsic motivators related to social pressure were highly significant among Generation Z. Further, in contrast to the original study, the role of intrinsic motivation was not significant, supporting the assertion that while intrinsic and extrinsic motivation are both crucial elements, they seem to have a differing role depending on the generational context being examined.
Time Flies When You Are Having Fun: Cognitive Absorption and Beliefs about ChatGPT Usage
Authors: Almeida Lima Vagner , Bellei Valter , Ballesteros Martins Lucas , Terlizzi Marco
Published: January 2025

This study is a methodological replication of the work of Agarwal and Karahanna (2000), who developed the multidimensional construct labeled cognitive absorption and defined it as a state of deep involvement with software. We adapted the wording of the original survey items to the context of ChatGPT, followed the same procedures to assess the original model, and compared our results with the following replications published in the 2010s. This replication study supported all proposed hypotheses in the original study, reinforcing the stability and applicability of the model over the years and in different scenarios.
A Replication Study on Users’ Congruence with Piracy Deterrence Messages
Authors: Jang Kyungmyung , Nehme Alaa , Warkentin Merrill
Published: January 2025

This paper is a partial replication of the study presented by Kajzer et al. (2014). The original study investigated the relationships between individual characteristics (including the big five personality traits, Machiavellianism, and social desirability) and the perceived effectiveness (i.e., persuasiveness) of five different security awareness message themes, one of which was deterrence in the context of piracy. The original study uses a sample size of 293 MTurkers. In this study, we replicated examining the effects of individual characteristics on the effectiveness of the piracy-deterrence security awareness message within the context of college students. Considering that college students engage in pirating various forms of digital content, including music, videos, books, and movies, it is important to address this deviant behavior on campuses. Using a different sample (university students; n =117) than the original study’s sample (MTurkers) allowed us to test the generalizability of the original study’s findings. For data analysis, we used covariance-based structural equation modeling (CB-SEM), a statistical technique different than the original study’s. CB-SEM is a theory-testing (i.e., confirmatory) analysis technique that is useful to check the replicability of the original study and to account for measurement errors. Like the original study, we found that agreeableness and neuroticism are positively associated with the effectiveness of deterrence messages while extraversion, conscientiousness, openness, and Machiavellianism have no relationships with it. Unlike the original study, we found that social desirability has a significant negative relationship with deterrence messages’ effectiveness. These results generally align with those of the original study.
Kinetic and Thermodynamic Control of the Reaction of 5-Amino-11H-isoindolo[2,1-a]quinazoline with N-phenylmaleimide
Authors:   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Levkov Igor , Kysil Andrii ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Shilin Serhiy ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Voitenko Zoia ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Yegorova Tetyana ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Published: January 2025

The reaction of 5-amino-11H-isoindolo[2,1-a]quinazolIne with maleimides is not a typical Michael reaction but proceeds through a more complex rearrangement. Depending on the type of control, the reaction with N-phenylmaleimide can follow two different pathways. Probable reaction mechanisms have been proposed for both kinetic and thermodynamic control. The structures of the reaction products were confirmed, in particular, by COSY and HMBC methods.
El mobiliario de representación del poder episcopal en la Catedral de Orihuela
Authors: Cecilia Espinosa Mariano , Ruiz Ángel Gemma
Published: January 2025

En este artículo se estudia el mobiliario propio de los obispos y arzobispos como símbolo del poder episcopal en las catedrales, a partir del análisis de los ejemplos conservados en la actual diócesis de Orihuela – Alicante. La cátedra episcopal como elemento mueble principal en las catedrales y el asiento del prelado en los coros catedralicios fueron las tipologías de mobiliario que representaron la autoridad, la legitimidad y el magisterio de los prelados en sus sedes catedralicias. En Orihuela, se conservan distintos ejemplos de esta tipología mobiliar que permiten profundizar en la relevancia de estas piezas y la importancia que se le dio a la hora de su diseño y encargo a artistas de relevancia durante el Barroco.
Historia y técnica del reloj de la catedral de Canarias: su significado en el contexto de la relojería española del siglo XVIII
Authors: Trujillo Yánez Gustavo Alejo , Sanz Platero Daniel
Published: January 2025

El objeto de interés de este artículo es el reloj mecánico de torre de la Catedral de Canarias (Gran Canaria), encargado a la firma londinense Higgs & Evans en 1775. Aunque los datos principales de este artilugio ya fueron dados a conocer por el canónigo Santiago Cazorla, se aportan nuevos documentos sobre su encargo e instalación y se describen con detalle sus características técnicas. La valoración global de este mecanismo es muy importante al ser una pieza clave en la relojería de torre española. Su particular estructura de jaula encastillada, ha sido clave para atribuir un buen número de relojes de procedencia inglesa que la historiografía había asignado a oficiales españoles. La producción de los relojeros Higgs y Evans, activos entre 1775 y 1832, tuvo como uno de sus principales mercados de destino los territorios de la corona española situados en la Península, islas adyacentes y Virreinatos de América.
“Passava la hechura en valor al, material”: la cama de plata del III marqués de Los Balbases
Authors: Vergara Acedos Hugo
Published: January 2025

De entre todos los objetos artísticos que pertenecieron a Pablo Spínola Doria, III marqués de Los Balbases, destaca sobre todos ellos una cama de plata sobredorada fabricada en Augsburgo con una serie de intrincadas decoraciones que aportaron al mueble un significado más allá del puramente práctico y ornamental. A través de un análisis formal y simbólico, este estudio busca contextualizar esta cama no solo como un objeto de lujo, sino como una herramienta de autopromoción y un reflejo material de la identidad y la política de mecenazgo cultural del marqués en el ámbito diplomático europeo del barroco, demostrando de esta manera cómo los objetos artísticos funcionaban como extensiones de la imagen y reputación de sus comitentes.
Dismantling the Master's House: the Questioning of Domestic Space in the Artistic Work of Costa Badía and the Offmothers Collective
Authors: González Fernández Semíramis
Published: January 2025

The construction of the domestic space as an eminently feminine place associated with specific gender roles has been questioned by feminist analysis since the 1970s. In the visual arts, women artists have used their artistic practices to deconstruct the association of the domestic with the private as opposed to the public space as political, to make visible the inequalities and violence in the home. This article analyzes current claims based on the work of the art collective Offmothers, focused on subverting the construction of motherhood, and that of Costa Badía, whose works delve into domestic spaces according to her experience as a woman artist with disabilities.
Building an identity. Javier Carvajal's designs for Loewe’s brand stores (1959-1963)
Authors: Alvarez Arce Raquel , Galvan Desvaux Noelia , Rodriguez Pastor Susana , Balboa Dominguez María Lucía
Published: January 2025

At the end of the 1950s, Enrique Loewe Knappe commissioned architect Javier Carvajal to design the future Loewe stores. Faced with this commission, Carvajal not only decided to respond to his client's request but also to build the identity of the luxury brand's stores based on the design of the premises' interiors and their furniture, giving them a common image. This article aims to analyse and highlight the different designs by Javier Carvajal, some of which were never built, classifying them according to his role in the purchasing process. This classification allows us to see how the architect was ahead of his time, building the image of Loewe thanks to an innovative vision of how the brand's points of sale should be.
Embracing Digital Feedback: Exploring Writing Instructors' Adoption and Potential of Feedback Technologies
Authors: Park Kyongson
Published: January 2025

This study examines the use and implications of feedback technology in First-Year Composition (FYC) programs, highlighting the critical gap between the application of general and feedback-specific technologies. Through surveys and interviews with FYC instructors at a large public university, it was found that while Microsoft Word dominates as the preferred feedback tool, there is growing interest in exploring other digital platforms like Google Docs and screen-casting. The research underscores the importance of systematic training for instructors and students alike in effectively utilizing feedback technologies, emphasizing quality over quantity in training sessions. Additionally, the value of face-to-face interactions in complementing digital feedback mechanisms is emphasized. The study advocates for continuous professional development and mentoring for educators to adapt to evolving feedback technologies. Limitations include a small and demographically narrow participant sample, suggesting the need for further research into both written and oral feedback technologies, and a more detailed survey design to capture the nuances of feedback practices.
Predictors of Left Ventricular Ejection Fraction Decrease in Patients With ST-Segment Elevation Myocardial Infarction
Authors: Pereverzeva K. G. , Yakushin S. S. , Tishkina I. E. , Nikiforov A. A. , Nikiforova L. V. , Laut M. V.
Published: January 2025

Aim. To identify predictors and construct a model for predicting left ventricular (LV) ejection fraction (EF) in patients with ST-segment elevation myocardial infarction (STEMI).Material and methods. This was a prospective registry study of patients with STEMI admitted within the first 24 hours of the disease onset. Patients were evaluated and treated according to the current clinical guidelines. On the first day of STEMI, concentrations of growth stimulating factor, proprotein convertase subtilisin-kexin type 9 (PCSK9), N-terminal pro-B-type natriuretic peptide (NT-proBNP), and high-sensitivity troponin I and C-reactive protein were measured. Echocardiography was performed on the first day and on day 10-12 of admission; LVEF was calculated by the Simpson method. The study included 138 patients; 3 patients were excluded from this part of the study due to death before repeat echocardiography. Based on the LVEF value on day 10-12 of STEMI, the patients were divided into the groups with preserved LVEF (pLVEF) ≥50% (n=34), reduced LVEF (rLVEF) ≤40% (n=21), and moderately reduced LVEF (mrLVEF) 41-49% (n=80).Results. The ordinal regression analysis showed that the factors influencing LVEF in STEMI patients included a history of chronic heart failure, Killip class II–IV acute heart failure at the index hospitalization, the development of LV dilation and postinfarction aneurysm, and an increase in NTproBNP. Based on the obtained estimates of the regression parameters, a prognostic model was constructed that showed the highest sensitivity of the model for predicting rLVEF, 94.4%, mrLVEF, 92.9%, and a lower sensitivity for predicting pLVEF, 62.5%.Conclusion. In the presence of a history of chronic heart failure, Killip class II–IV acute heart failure, developed LV dilation and postinfarction aneurism, and elevated NTproBNP, patients with STEMI are expected to have lower LVEF values.
Acute Decompensated Heart Failure: Structural and Functional Changes in Mitochondria
Authors: Garganeeva A. A. , Kuzheleva E. A. , Tukish O. V. , Vitt K. N. , Kondratiev M. Yu. , Syromyatnikova E. E. , Andreev S. L. , Arsenieva Yu. A. , Korepanov V. A. , Afanasiev S. A.
Published: January 2025

Aim. Comparative assessment of structural changes in cardiomyocyte mitochondria of the right atrial appendage and the mitochondrial respiratory function in peripheral blood leukocytes in a cohort of patients after acute decompensated heart failure (ADHF) and with stable chronic heart failure of ischemic etiology with reduced ejection fraction (CHFrEF) or moderately reduced ejection fraction (CHFmrEF) of the left ventricle.

Material and methods. The study analyzed 40 micrographs of right atrial appendage cardiomyocytes obtained from 12 patients with CHFrEF and CHFmrEF. The study protocol was registered on ClinicalTrials.gov: NCT05770349. Electron microscopy was performed with a JEM-1400 transmission electron microscope (Subdiffraction Microscopy Collective Use Center at the Electron Microscopy Department of the Belozersky Research Institute of Physico-Chemical Biology, Lomonosov Moscow State University). The total area of interfibrillar mitochondria was calculated as a ratio of the total surface area of mitochondria located between the cardiomyocyte contractile fibers to the total area of the interfibrillar space. The respiratory activity of isolated mitochondria was assessed in oxygenated standard incubation media. Patients were divided into two groups based on the occurrence of an ADHF episode within 12 months before inclusion in the study: Group 1 (n=19), patients without ADHF and Group 2 (n=21), patients with an episode of ADHF.

Results. Most of the clinical and anamnestic parameters were comparable between the study groups. Analysis of the mitochondrial respiratory function in peripheral blood leukocytes showed reduced values of the respiratory control level (RCL) in both study groups, 2.14 [2; 2.32] and 2.55 [1.36; 2.84] conv. units. The total area of interfibrillar mitochondria was 41.7 [32; 58]% in the group without ADHF and 33 [21; 46]% in patients with ADHF (p=0.048); significant correlations were found between this parameter and the distance walked in the 6-min walk test (r=0.482; p=0.002) and the peak oxygen consumption during exercise (r=0.395; p=0.012). A ROC analysis was used to determine a threshold value of the total area of interfibrillar mitochondria in patients with ADHF: the cutoff point was 32%.

Conclusion. A decrease in the total area of interfibrillar mitochondria of the right atrial appendage cardiomyocytes of less than 32% as measured by electron microscopy is characteristic of patients with a previous episode of ADHF with reduced and moderately reduced left ventricular ejection fraction. The study results confirm the development and persistence of ultrastructural changes in cardiomyocytes after ADHF.
Chronic Thromboembolic Pulmonary Hypertension Drug Treatment
Authors: Ivanov S. N. , Chernyavsky A. M. , Edemsky A. G. , Vasiltseva O. Ya.
Published: January 2025

The main treatment of patients with chronic thromboembolic pulmonary hypertension (CTEPH) is radical surgery, pulmonary thromboendarterectomy (PEA). However, about 40% of patients with CTEPH are inoperable due to distal pulmonary vascular lesions or the severity of hemodynamic disorders. Almost 30% of patients with CTEPH experience persistent or recurrent pulmonary hypertension after surgery, that requires a drug treatment with PAH-specific drugs. This review presents current data on the use of targeted therapy in patients with CTEPH. The review addresses the place, indications, and the evidence base for using the main groups of specific drugs, including stimulators of soluble guanylate cyclase, phosphodiesterase type 5 inhibitors, endothelin receptor antagonists, and prostacyclin analogues.
Factors of Long-Term Prognosis for Cardiovascular Complications in Patients After Acute Myocardial Infarction, Based on the Plasma Proteome
Authors: Kordzaya E. L. , Kononikhin A. S. , Nikolaev E. N. , Vasilieva E. J. , Komissarov A. A.
Published: January 2025

Aim. To study the plasma proteome of patients with type 1 acute myocardial infarction (AMI) to identify potential markers for long-term prognosis of the risk for developing cardiovascular complications.Material and methods. The study included 64 patients with type 1 AMI with and without ST segment elevation who underwent primary percutaneous coronary intervention upon admission. The following information on cardiovascular events was collected for 36 months after admission: death from cardiovascular pathology, recurrent AMI, stroke, repeat myocardial revascularization and/or endarterectomy. Peripheral blood sampling followed by a plasma proteome analysis using chromatography-mass spectrometry was performed in all patients before hospitalization.Results. During 36 months after hospitalization, cardiovascular complications were detected in 23 (36%) patients. These patients were included in the group with an unfavorable prognosis, while the remaining patients made up the group with a positive prognosis. A mass spectrometric analysis of the plasma proteome and comparison of the groups identified seven differentially represented proteins. Also, a multivariate regression analysis, ROC curves, and Kaplan-Meier models showed that four proteins (apolipoprotein C1, complement factor H, di-N-acetylchitobiase, and ficolin-2) were predictors of the risk for developing cardiovascular complications in the long term. An integrated parameter was developed that took into account the plasma concentrations of all four above proteins. This parameter was used to construct a model for assessing the risks of unfavorable long-term prognosis in AMI patients with a sensitivity of 87% and a specificity of 78%.Conclusion. The study results demonstrated that plasma concentrations of apolipoprotein C1, complement factor H, di-N-acetylchitobiase, and ficolin-2 are reliable prognostic markers for assessing the risks of cardiovascular events in patients with AMI in the long term.
Conceived vs. Operationalised Innovation: A Study of Tourism Entrepreneurs
Authors:   Federal University of Maranhão, Center of Sciences of São Bernardo, Brazil, Aires Jussara , Costa Carlos ,   University of Aveiro, Department of Economics, Management Industrial Engineering and Tourism (DEGEIT), Portugal, Brandão Filipa ,   University of Aveiro, Department of Economics, Management Industrial Engineering and Tourism (DEGEIT), Portugal, Flores Luiz Carlos Silva ,   Universidade do Vale do Itajaí (UNIVALI), Brazil
Published: January 2025

This study explores the meanings and practices of innovation in tourism companies, focusing on the alignment (or misalignment) between conceived and implemented innovations. Drawing on 35 semi-structured interviews with managers of tourism businesses in Natal, Brazil, conducted and monitored from 2019 to 2023, the research provides a longitudinal perspective on innovation dynamics. The findings reveal that while managers' conceptualisations of innovation align with existing literature, the implementation often surpasses their initial conceptual scope. Innovation is perceived as continuous learning and adaptation driven by stakeholder interactions, sustainability imperatives, and market demands. The study also highlights the temporal dimension of innovation, as the challenges of the COVID-19 pandemic and rapid digital transformation intensified the need for innovative responses. These findings underscore the importance of bridging the gap between the design and execution of innovation, offering critical insights for developing effective tools to measure and manage innovation in the tourism sector. The research contributes to the global discourse on tourism innovation by emphasising the interplay between theory and localised entrepreneurial practices.
The Effectiveness of Classpoint Technology in Developing Reading Comprehension Skills among Non-Native Arabic Speakers
Authors:   The National Research Center for Giftedness and Creativity, King Faisal University, Al-Ahsa 31982, Saudi Arabia, AlAli Rommel Mahmoud
Published: January 2025

The research focused on examining how effective Classpoint technology is, in enhancing the reading comprehension skills of non-native Arabic students, at Yarmouk University Language Center in the second semester of the 2023/2024 academic year. Specifically, two groups of 40 students were involved. One group was taught using Classpoint technology while the other group was taught using traditional methods. A reading comprehension test was administered to assess the study goals after verifying its validity and reliability. The findings showed that Classpoint technology had an impact on enhancing reading comprehension abilities in the test group compared to their counterparts, in the control group with an eta squared value of 0.428. This indicates that 42.8% of the variance in reading comprehension performance can be attributed to the use of Classpoint technology. More clearly, the results found that the experimental group showed significant improvement in all areas of reading comprehension: literal, inferential, and critical-evaluative comprehension. The results emphasize how digital tools, for education such as Classpoint can boost the reading comprehension skills of non-native Arabic learners effectively. Nevertheless, the study small sample size could restrict the generalizability of the findings. Nevertheless, the results indicate that incorporating tools like Classpoint in language education might prove to be beneficial in enhancing reading comprehension skills among non-native Arabic learners. This supports the idea that there’s potential for use of technologies in educational environments.
Game-D: Development of an Educational Game Using a Line Follower Robot on Straight Motion Material
Authors:   Faculty of Engineering, Universitas Negeri Padang, Padang, Indonesia, Eliza Fivia
Published: January 2025

This research introduces Game-D, an innovative educational game designed to facilitate learning about straightline motion through interaction with a line-following robot. Grounded in constructivist learning theory, Game-D employs gamification principles to enhance students’ understanding and retention of fundamental concepts in robotics and motion physics. Using an R&D approach with the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation), Game-D underwent a series of design and testing phases to ensure alignment with educational objectives and user preferences. The sample in this study consisted of 34 students from the Science Education study program, Faculty of Teacher Training and Education, Trunojoyo University, Madura, Indonesia. Analysis results indicate that Game-D meets high standards of validity and reliability, with an average validity score of 88.25%, categorized as very valid, and a practicality score of 87.3%, categorized as very practical. Additionally, the effectiveness test yielded a high score of 86.25%, categorizing the game as very effective. These findings demonstrate that Game- D is highly valid, practical, and effective as a learning medium for straight-line motion. This study confirms that integrating a line-following robot into an educational game can improve the quality of learning, providing a viable tool to support the educational process. The media effectiveness test showed that Game-D significantly improved conceptual understanding, active student engagement and learning motivation. This underscores the role of Game-D as an effective tool in supporting straight-line motion learning, fostering a dynamic and interactive learning environment for successful education.
El financiamiento educativo inteligente en la Argentina: antecedentes, diagnóstico y desafíos
Authors: Claus José Agustín , Vinacur Tamara
Published: January 2025

Para garantizar el derecho efectivo a la educación con aprendizajes significativos y de calidad, se requiere sostener y fortalecer las estrategias de financiamiento para promover una mayor justicia social y educativa. El enfoque del financiamiento educativo inteligente aporta un punto de partida para reflexionar y comprender cómo se recaudan y asignan los recursos en la educación. El objetivo del presente documento es proponer un conjunto esquematizado de los desafíos, delineando una hoja de ruta de posibles cursos de acción e intervenciones de política de financiación, para abordarlos y arribar a conclusiones que ilustran los principales nudos problemáticos del financiamiento educativo en Argentina. Este documento integra la serieSABERLOCAL,un conjunto de publicaciones impulsadas por el Banco Interamericano de Desarrollo (BID) para sistematizar y visibilizar experiencias subnacionales y nacionales que enriquezcan el diálogo regional. Creemos que identificar problemáticas comunes en distintos países de la región es una oportunidad para hacer circular el conocimiento y diseñar políticas educativas efectivas en base a evidencia empírica y lecciones aprendidas.
El modelo de financiamiento centros educativos en Costa Rica: las juntas de educación y administrativas
Authors: Beirute Brealey Tatiana , Biehl María Loreto , Elacqua Gregory , Margitic Juan Francisco , Thailinger Agustina
Published: January 2025

Esta nota técnica analiza el funcionamiento del modelo de juntas de educación y administrativas en Costa Rica, que son órganos auxiliares de la administración pública encargados de gestionar recursos y programas en los centros educativos. Estas juntas ejecutan y administran una parte sustancial de los recursos educativos del país, exceptuando los salarios docentes, representando aproximadamente el 25% de los fondos del Ministerio de Educación Pública. El estudio examina las ventajas y desafíos de este modelo descentralizado, analiza datos sobre la ejecución de recursos en 2021-2022, e identifica ineficiencias estructurales, de conformación y coordinación. Los hallazgos revelan brechas entre las capacidades requeridas y disponibles de los miembros de las juntas, débiles mecanismos de rendición de cuentas, y criterios de asignación de recursos que no consideran factores de equidad. Se proponen recomendaciones para fortalecer el modelo, incluyendo mejoras en el perfil de los integrantes, la gobernanza, los sistemas de información y seguimiento, así como una revisión integral de las atribuciones y competencias de las juntas sobre la ejecución de los diferentes tipos de recursos.