bluuebunny/crossref_metadata_2025_split huggingface dataset:
Presencia de Compuestos Orgánicos Persistentes (COPs) en huevos de garzas y espátulas rosadas de la Laguna El Tóbari, Sonora, México
Authors: Aguilera-Márquez Daniela , Bastidas-Bastidas Pedro de Jesús , Leyva-García Germán N. , Jara-Marini Martín E. , García-Hernández Jaqueline 
Published: May 2024

El presente trabajo se realizó en el Valle del Yaqui, Sonora, México, con la finalidad de evaluar el efecto de la contaminación agrícola en las aves del ecosistema lagunar El Tóbari, ubicado al sur del estado (27°04’40.01’’N, 110°00’06.66’’O). Este ecosistema recibe drenes agrícolas del Valle del Yaqui y es hábitat de especies de aves reproductivas de colonia, dentro de las cuales se encuentran la Espátula Rosada (Platalea ajaja), la Garcita Dedos Dorados (Egretta thula), el Garzón Gris (Ardea herodias), la Garza Rojiza (Egretta rufescens), y el Pedrete Corona Clara (Nyctanasa violacea). Para el efecto, se colectaron un total de 30 huevos de estas 5 especies, en el periodo comprendido de los años de 2010-2012. Los huevos se pesaron y se les midió la longitud, el ancho, el grosor del cascarón y se calculó el índice de tamaño y el volumen. En el contenido y en el cascarón de cada huevo, se cuantificaron 17 plaguicidas organoclorados incluyendo el DDT y sus metabolitos. Como resultado se tiene que el 4,4’-DDE se detectó en 100% de las muestras, con concentraciones que variaron entre 0.16 y 17.86 µg/g peso húmedo (mediana = 2.17 µg/g); por lo contrario α-BHC, β-BHC, heptacloro epóxido, 4,4’-DDD y 4,4’-DDT se presentaron con menor frecuencia y los valores máximos de 0.09 µg/g y mínimos de 0.004 µg/g peso húmedo. En el cascarón se encontraron el β-BHC, heptacloro, endrín aldheído y el 4,4’-DDE, este último en el cascarón de la Garza Rojiza y del Garzón Gris con medianas de 2.54 y 1.23 µg/g, respectivamente. Un 30% del total de las muestras excedieron el límite de 4 µg/g de concentración de 4,4’-DDE, con efectos dañinos en la reproducción de especies similares, es así, que el 55% de las muestras del Garzón Gris rebasaron el límite, seguido de la Espátula Rosada (37%), la Garza Rojiza (25%) y la Garcita Dedos Dorados (12%). Esta última especie fue la única que presentó una correlación negativa entre la concentraciones de 4,4’-DDE y el grosor del cascarón.
El papel del ion calcio y la autofagia en la regulación del hidrotropismo en raíces: el caso de Arabidopsis thaliana
Authors: Castillo-Olamendi Luis , Jiménez-Nopala Gladys , Porta Helena 
Published: May 2024

Las plantas son organismos sésiles con diferentes mecanismos que intervienen durante la escasez de agua. Uno de ellos es el hidrotropismo que consiste en la modificación del crecimiento y movimiento de la raíz hacia zonas donde hay más agua. Este movimiento es fundamental para la supervivencia de la planta. Otro mecanismo es la autofagia descrita no sólo como una defensa ante la sequía sino también como un proceso catabólico conservado en la mayoría de las células eucariotas, a través del cual se transporta material citoplasmático no deseado o disfuncional a la vacuola de las células vegetales para su degradación y reciclamiento. En la respuesta hidrotrópica, se presenta una acumulación de autofagosomas y H2O2 en la zona de curvatura de la raíz. Por esto la autofagia reduce el estrés oxidativo causado por el estrés hídrico durante el hidrotropismo. El ion calcio (Ca2+) es un segundo mensajero que regula las reacciones al estrés. Cuando la célula percibe un estímulo como la escasez de agua, hay un aumento transitorio o sostenido de la concentración de Ca2+ en el citosol que desencadena procesos celulares temporales al ser detectado por las proteínas fijadoras de Ca2+ como la calmodulina, ubicada en la membrana plasmática y en la membrana de los organelos celulares. La curvatura de la raíz durante el hidrotropismo depende de la acumulación de Ca2+ en el citosol mediante el bloqueo de la ATPasa de Ca2+ ECA1 por la proteína MIZ1. Además, la proteína similar a la calmodulina 24, (CML24), potencialmente se une al Ca2+ en respuesta al estrés abiótico, y al interaccionar con la proteína ATG4 de la autofagia, se puede afectar su progreso. En este trabajo se realizó una revisión de los conceptos básicos del hidrotropismo, la autofagia y el flujo de Ca2+ con la intención de ampliar el conocimiento sobre la interacción de estos procesos y la defensa celular de Arabidopsis thaliana ante la escasez de agua.
The Coefficient of Emotiveness of «Mother Tongue» in the Context of Measuring the Symbolic Power of Minority Languages in the Russian Federation (Based on the Russian Census Data from 2010 to 2020)
Authors: Ханова Айгуль Филусовна , Больгина Татьяна Александровна , Драгой Ольга Викторовна 
Published: May 2024

Исследуется особенность языковой ситуации РФ, при которой в социологических опросах и переписях населения респонденты указывают язык, которым они не владеют, родным. Данный феномен характеризует эмотивность родного языка и его особый символический статус, тесно связанный с этнической идентичностью. Вводится новый термин «коэффициент эмотивности», который определяет количественное соотношение людей, не владеющих, но указывающих язык в качестве родного. Усиление символического статуса языка и актуализация этнической идентичности тесно связаны с происходящими общественно-политическими событиями. Основной гипотезой исследования стало предположение о том, что языковой конфликт 2017–2018 гг. оказал влияние на коэффициент эмотивности миноритарных языков РФ. Проведенный статистический анализ с использованием линейной модели со смешанными эффектами на материале Всероссийской переписи населения 2010 и 2020 гг. показал значимый положительный рост коэффициента эмотивности в 2020 г. Результаты исследования подтвердили влияние общественно-политических событий 2017–2020 гг. на подвижность конструкта этнической идентичности и связанной с ней символической мощности миноритарных языков РФ.
This study examines a linguistic situation in Russia, focusing in particular on the phenomenon of respondents in sociological surveys and Russian censuses reporting the language they do not actually speak as their mother tongue. This phenomenon emphasizes the emotional significance of the Russian term ‘mother tongue’ and its unique symbolic status. The authors introduce a new term, the ‘coefficient of emotiveness,’ which quantitatively measures the proportion of people who do not speak the language but describe it as their mother tongue. At the same time, the strengthening of ethnic identity and the increasing importance of a language as a symbol are influenced by socio-political changes. The study’s main hypothesis is that the language conflict of 2017–2018 impacted the emotional significance of minority languages in the Russian Federation. A linear mixed-effects model based on the 2010 and 2020 Russian census data revealed a significant positive increase in the coefficient of emotiveness in 2020. Our research confirms that the 2017-2020 socio-political context influenced the ethnic identity and symbolic meaning of minority languages in Russia
Optimization of Practical Path of Teaching Reform in Higher Education - Based on Distributed Logistic Model Application
Authors: Zhang Xiaoni , Lu Hongtao 
Published: May 2024

Abstract
This study presents a novel approach to the application of distributed logistic modeling for the enhancement of education and teaching in colleges and universities, particularly focusing on the pedagogical goals and curriculum content. Utilizing the abundance and accessibility of educational resources, this research harnesses data from diverse sources such as books, textbooks, catechisms, and blogs. Through the application of text mining and text recognition technologies, preliminary data are extracted for analysis. Subsequent data preprocessing steps involve the removal of extraneous information, null values, and outliers to refine the dataset. The research identifies key determinants influencing educational outcomes, establishing independent and dependent variables for these factors. The logistic and sigmoid functions are employed to compute the loss function, thereby addressing issues related to overfitting. Regularization transformations further optimize the results, culminating in the development of a robust distributed logistic model for education. An illustrative analysis demonstrates the model’s applicability and effectiveness in understanding and improving educational practices. Data presentation: P=0.026<0.05, the independent variable of knowledge base level (x7
) has a significant effect on the effect of education and teaching and OR-Value=3.11, that is to say, if the knowledge base level rises by one unit, the dependent variable of the impact of education and teaching will be increased by 3.11 magnitude of change.
Characteristic analysis of village cultural landscape by Lian Li space information technology and three-dimensional modelling
Authors: Lai Yanlin , Wang Hongyan 
Published: May 2024

Abstract
At present, due to the traditional village landscape protection method being relatively single, resulting in the traditional village landscape tends to “homogenization,” which is not conducive to the development of the village cultural landscape. This paper combines spatial information technology and three-dimensional modeling to reconstruct the village landscape and analyze its characteristics. Low-altitude oblique photography technology is used to collect village landscape information from multiple angles and then combined with the 3D model imaging law covariance equations to form the landscape 3D model features and then complete the multi-visual 3D model information matching. Finally, through texture mapping, the 3D model is generated to match the color of the real landscape. Using BIM technology, the data is refined to address the problem of local defects in the landscape 3D reconstruction process. The proposed technology is applied in practice to analyze the spatial comprehensibility of the test village landscape, and the comprehensibility value R² is obtained as 0.317, which is a poor spatial order of the test village. The village residents’ actual landscape color perception of the town ranges from -0.0364 to 0.4566, and the expected range is above 0.7. The actual perception is much lower than the predicted perception, and the subsequent landscape modification should be close to the villagers’ expectations.
Inertial Estimation in Power Grids Considering Load Contribution Based on FF-UKF
Authors: Li Shichun , Wang Xiaoyu , Wang Lijun , Su Lingjie , Luo Linhua 
Published: May 2024

Abstract
In modern power systems, the extensive integration of renewable energy sources leads to a reduction in system inertia, thereby affecting grid stability. This study proposes a novel method for estimating grid inertia, which, under quasi-steady state conditions, effectively incorporates load contribution by combining class noise signals collected by PMUs (Phasor Measurement Units) with the Forgetting Factor Unscented Kalman Filter algorithm (FF-UKF). The research initially analyzes the characteristics of various inertia sources in power systems dominated by renewable energy. Building on this, we propose a grid node equivalent inertia estimation model based on node equivalent frequency response, developing an FF-UKF-based algorithm that allows for the continuous dynamic estimation of inertia at various grid nodes. Simulation experiments conducted within the IEEE 39 bus system validate the method’s effectiveness and demonstrate the spatiotemporal distribution of grid inertia under varying levels of renewable energy penetration. This study is significant for understanding and enhancing frequency control and stability in power systems, providing key technical support for the modernization of the power system and the efficient integration of renewable energy.
Corporate Social Investment in the Environment in Brazil: an Overview of Actions Related to SDG 6 – Water and Sanitation
Authors: Bruel Betina Ortiz , Romano Cezar Augusto , Gadda Tatiana Maria Cecy 
Published: May 2024

Objective: Investigate the Corporate Social Investment (CSP) in the environment in Brazil, focusing on the UN's Sustainable Development Goal (SDG) 6 – Water and Sanitation.

Theoretical Framework: Achieving SDG 6 in Brazil requires partnerships between governments, companies and citizens to guarantee water resources for future generations, and the CSP can contribute in this aspect.

Method: Documentary research on BISC Reports (Benchmarking em Investimento Social Corporativo) from 2008 to 2023; GIFE Censuses (Grupo de Institutos, Fundações e Empresas) from 2005 to 2022-2023; and Sustainability Reports of participating companies.

Results and Discussion: In BISC surveys, CSP in the environment had a better moment in 2012, representing 12% of investments, when it decreased continuously until 2020, reaching 0.1%, and rising to 5.8% in 2022. Environment prevailed in companies' mandatory socio-environmental applications, meaning legally imposed investments to compensate for environmental impacts. In the GIFE censuses, the average number of companies with CSP in the environment was 42%, but the volume of resources in 2022 was only 5.8% of the total. Only 10 companies had an CSP related to SDG 6, with target 6.6, about protection and restoration of water-related ecosystems, having the greatest performance.

Research Implications: The private sector is a large consumer of potable water and the growing demand for water security requires new forms of corporate water management, beyond company walls and legal impositions.

Originality/Value: The CSP in the environment in Brazil is still not very representative, but there are success stories to be studied and made a reference for other companies.
Online Impulsive Buying Behavior of Mobile Site Shoppers in Turkey: A Mediation Analysis
Authors: Karahan Mehmet Ozan 
Published: May 2024

Objective: The study investigates the correlation between mobile site quality (MSQ) factors and perceived enjoyment. It also explores the link between perceived enjoyment and both electronic word-of-mouth (eWOM) and online impulsive buying behavior of mobile site shoppers in Turkey.

Theoretical Framework: The theoretical framework considers MSQ factors (contact, responsiveness, efficiency, fulfillment, and privacy), perceived enjoyment, eWOM and online impulsive buying behavior.

Method: This study employs a quantitative methodology, utilizing a questionnaire as the primary data collection tool, designed for a sample size of 676 individuals fromTurkey selected through Purposive Sampling technique. The data analysis method employed is Structural Equation Modeling (SEM), utilizing the AMOS software to assess the goodness of fit statistics of the measurement model with the empirical data.

Results and Discussion: The results showed that the contact, efficieny, and the privacy of mobile site influence perceived enjoyment positively. Perceived enjoyment influences both eWOM and online impulsive buying behavior positively and finally eWOM influences online impulsive purchasing behavior positively as well.

Research Implications: The results suggest that improvements in MSQ factors of the contact, efficieny, and the privacy can provide mobile site shoppers more enjoyment and while perceived enjoyment has been increasing the probability of mobile site shoppers’ impulsive buying behavior, it also provides more effective marketing campaigns with less costs for the mobile retailers in Turkey.

Originality/Value: This study makes a significant contribution to the existing online impulsive behavior literature by focusing on the MSQ elements of mobile shopping sites among shoppers in Turkey. It examines the mediation of perceived enjoyment between all MSQ elements and online impulsive buying behavior, as well as eWOM between perceived enjoyment and online impulsive buying behavior, which have not been extensively explored in prior research.
Students’ Intercultural Contact and L2 Motivation: A Case of Indonesian EFL Students
Authors: Tambunan Anna Riana , Sari Winda Setia , Rasmitadila  
Published: May 2024

Objective: The present study aims to explore the relationship between EFL students' intercultural contact through social networking sites and their L2 motivation.

Method: To do so, a number of 162 university students participated in answering three sets of questionnaires. A regression analysis identified correlations between L2 motivation and intercultural engagement through social networking sites during the learning process.

Results and Discussion: Instagram and YouTube were determined to be the primary sources of intercultural contact among Indonesian EFL students. The study also revealed a substantial relationship between intercultural contact, the L2 motivational self-system, and its constituents.

Originality/Value: Based on the findings, this study suggests that teachers employ social networking sites as often as possible in classroom activities to engage students with meaningful learning in their target language.
Plant Growth-Promoting Rhizobacteria: A Promising Strategy To Optimize The Development Of Schizolobium Parahyba
Authors: Carranza-Patiño Mercedes , Laz-Vera Yussely , Herrera Feijoo Robinson J. , Jiménez-Romero Edwin , Cedeño-Moreira Ángel , Chicaiza-Ortiz Cristhian 
Published: May 2024

Objective: To investigate the efficacy of plant growth-promoting rhizobacteria (PGPR) in enhancing the early development stages of Schizolobium parahyba, a critical species for the timber industry, aiming to optimize reforestation and agroforestry practices for sustainable forestry.

Theoretical Framework: The research is grounded in the exploration of symbiotic relationships between PGPR strains and plant species, focusing on their potential to improve seed germination, plant growth, and biomass production. The study examines how these interactions can be leveraged to enhance agricultural productivity and sustainability, with a specific emphasis on the benefits of employing PGPR in forestry.

Method: The study utilized an experimental approach, assessing the impact of four PGPR strains (Serratia marcescens, Pseudomonas protegens, Enterobacter absuriae, and Acinetobacter calcoaceticus) on S. parahyba seedlings. These were cultivated in three different substrates, with variables such as germination rate, above-ground and root growth, and biomass production meticulously measured to evaluate the effects of bacterial inoculation.

Results and Conclusions: The application of PGPR notably improved all measured growth parameters in S. parahyba seedlings, with A. calcoaceticus and P. protegens specifically enhancing stem and root development, respectively. A synergistic effect was observed in substrates containing peat, underscoring the significant potential of PGPR in boosting the productivity and sustainability of early-stage forestry cultivation. The findings advocate for further field studies to fine-tune these interactions, aiming to establish more resilient and ecologically sustainable agricultural practices.

Originality/Value: This research contributes novel insights into the utilization of PGPR in forestry, highlighting its substantial promise in enhancing the early growth stages of Schizolobium parahyba. By demonstrating the specific benefits of PGPR strains and their interactions with different substrates, the study offers a promising strategy for improving the sustainability and productivity of reforestation and agroforestry efforts.
Analysis of the Implementation of Virtual Learning Environments to Strengthen Research in Higher Education
Authors: Castillo Octavio Segundo Crespo , Yale Fidel García , León Orlando Ascayo , Zambrano Patricio Vladimir Méndez 
Published: May 2024

Objective: In this article, the aim is to explore in detail how AI is specifically applied to technical and technological education within universities.

Methods: Data collection was conducted through a comprehensive search in academic databases, using key terms such as "virtual learning environments" and "higher education." Inclusion criteria were established to select relevant studies, excluding those focused on primary or secondary education. Qualitative data analysis identified patterns and trends in the implementation of VLEs in higher education, highlighting effective practices and common challenges. The benefits of VLEs, such as universal access to educational resources and global collaboration among researchers, were emphasized, but limitations were also acknowledged, such as limited technological infrastructure and the need for teacher training. Although the possibility of omissions and biases in the study was recognized, a conscious effort was made to minimize them through a transparent and systematic approach to data collection and analysis.

Result: This strategy of building a document matrix allowed for covering a wide range of research on the implementation and effectiveness of Virtual Learning Environments (VLEs) in higher education. Each article underwent rigorous analysis to identify relevant data related to the research objectives, methodologies, results, and conclusions. The development of this matrix represents a fundamental step in the research process by facilitating a structured and systematic evaluation of the existing literature in this constantly evolving field.
Morphological and pathogenic characterization of Fusarium species causing common bean root rot in Uganda
Authors: Erima Samuel , Nyine Moses , Edema Richard , Nkuboye Allan , Nakibuule Justine , Paparu Pamela 
Published: May 2024

Fusarium root rot (FRR) of common bean occurs in Africa, Central and South America, and causes yield losses of up to 86%. Recently, FRR-like wilt symptoms were observed in Uganda’s agroecology zones. To identify the causal pathogen, we conducted surveys in seven agroecology zones to determine the prevalence and incidence of the reported disease. During the surveys, diseased roots were collected for pathogen isolation. Fungal strains were characterized using colony color, mycelial growth rate and microscopic structures such as conidia and microconidia. The pathogenicity of 99 strains on five bean varieties was determined in artificially inoculated soils in the screenhouse. Based on field symptoms, the observed wilting was identified to be Fusarium root rot, the prevalence of which varied across agroecologies, with the highest (95%) in the Karamoja pastoral zone (KP) and the lowest (40%) in West Nile farming system (WN). Similarly, the incidence of FRR was highest (87%) in KP, and lowest (20%) in WN. Fusarium strains differed in growth rate, colony color, shape and size of microscopic structures. All evaluated strains were pathogenic on common bean and caused severities of 0.9 to 98.3%. Further studies are required to identify the isolated strains at the species level using molecular tools.