bluuebunny/crossref_metadata_2025 huggingface dataset:
Relationship Between Pharmaceutical Knowledge and Probability of Medication Errors Among Nurses: A Cross-sectional Study in the Northwest of Iran in 2020
Authors: Dadras Elham , Baghaei Rahim , Sharifi Hamdollah , Sayyadi Hojat
Published: January 2022

Background: Patient safety is a major concern for health care professionals. Medication errors have been considered a major indicator of health care quality. The lack of pharmacological knowledge is a cause of medication error among nurses. Objectives: The purpose of this study was to investigate the relationship between pharmacological knowledge and the probability of medical errors in nurses working in Urmia hospitals in 2020. Methods: This cross-sectional study included 490 nurses randomly selected from among those working in hospitals of Urmia in 2020. The data collection tool was a multiple-choice questionnaire about knowledge and pharmacological skills consisting of 3 sections: demographic information, nurses’ drug knowledge, and the confidence level of response in nurses. To analyze questions and hypotheses via SPSS version 21, the t-test and analysis of variance (ANOVA) were employed. Results: The highest pharmaceutical knowledge scores of nurses were related to methods of administration (2.9 ± 1.01 [72.56%]), and the lowest score was related to drug management (1.05 ± 0.63 [52.84%]). The mean of error probability was very low in 28.81% of nurses, low in 37.66%, high in 11.34%, and very high in 22.85%. Pharmaceutical knowledge had a significant relationship with gender, wards, type of hospital, and number of children (P < 0.05 for all). Conclusions: Since the nurses’ level of pharmaceutical knowledge has an important role in the correct prescription of medicine, we suggest that nurse managers and educational supervisors in the field of nursing use in-service training programs and prepare training booklets and posters to promote nurses’ pharmaceutical knowledge in this field.
Explanation of Structure and Function of kv1.3 Potent Blocker from Mesobuthus eupeus Venom Gland: A New Promise in Drug Development
Authors: Khodayar Mohammad Javad , Mahdavinia Masoud , Baradaran Masoumeh , Jalali Amir
Published: January 2022

Background: Scorpions and other venomous animals are sought with great concern because venom is a source of novel peptides with exciting features. Some toxins of scorpion venom are effectors of potassium channels. Previous studies strongly support the importance of potassium channel toxins for use as pharmacological tools or potential drugs. Objectives: Here, a three-dimensional (3-D) structure and function of a potent acidic blocker of the human voltage-gated potassium ion channel, Kv1.3, previously identified in the scorpion Mesobuthus eupeus venom gland, were interpreted. Methods: The 3-D structure of meuK2-2 was generated using homology modeling. The interaction of meuK2-2 with the Kv1.3 channel was evaluated using a computational protocol employing peptide-protein docking experiments, pose clustering, and 100 ns molecular dynamic simulations to make the 3-D models of the meuK2-2/Kv1.3 complex trustworthy. Results: A CSα/β (cysteine-stabilized α-helical and β-sheet) fold was found for the 3-D structure of meuK2-2. In a different mechanism from what was identified so far, meuK2-2 binds to both turret and pore loop of Kv1.3 through two key residues (Ala28 and Ser11) and H-bonds. The binding of meuK2-2 induces some conformational changes to Kv1.3. Eventually, the side chain of a positively charged amino acid (His9) occupies the channel's pore. All together blocks the ion permeation pathway. Conclusions: MeuK2-2 could block Kv1.3 by a new mechanism. So, it could be a unique target for further investigations to develop a pharmacological tool and potential drug.
A contribution to distribution of genus Stagnicola and Catascopia (Gastropoda: Lymnaeidae) in the Czech Republic
Authors: Beran Luboš
Published: January 2022

This paper brings a contribution to the distribution of genus Stagnicola Jeffreys, 1830 and Catascopia Meier-Brook & Bargues, 2002 in the Czech Republic. Occurrence of four species has been confirmed in the Czech Republic so far. Two species – Stagnicola corvus (Gmelin, 1791) and S. palustris (O.F. Müller, 1774) (including S. turricula (Held, 1836)), are widespread and common especially in lowlands along bigger rivers (Labe, Ohře, Morava, Dyje, Odra). Occurrence of S. fuscus (Pfeiffer, 1821) is restricted to the territory of the north-western part of Bohemia and Catascopia occulta (Jackiewicz, 1959) is a rare species with only two known sites.
Investigation of Pre-Service Teachers’ Metaphorical Images towards the Concepts of “Teacher Candidate” and “Teacher Educator”
Authors: RADMARD Somayyeh
Published: January 2022

The purpose of this study was to describe the metaphorical images of the prospective teachers, who were employed in different teaching programs of education faculties, regarding themselves and their educators, and to evaluate the standard teacher education program in a critical manner. Even though prospective teachers’ metaphorical images pertaining learning, teaching, school and so forth were extensively examined in the previous studies, their personal theories for themselves and their educators have not been subjected to any research study. The current study was designed and conducted as a single survey study. The study was carried out with the participation of 1130 prospective teachers studying at the education faculty of a foundation-supported (private) university in Istanbul. Metaphorical images were taken from all participants towards themselves and their educators. As a result of the interpretive and inductive analysis, the prospective teachers generated metaphorical images for themselves such as: something that needs to be cultivated, leader of future, a fixed-static object, the candidate of the molder, something deceptive, something needs to be shaped, obedient, knowledge receiver, racer, etc. The prospective teachers also produced metaphorical images for their educators in the following manner: bridge function, organic growers, knowledge transmitter, a valuable object, competitors. In general, it was observed that pre-service teachers held a considerably pedagogically subjectcentred or teacher-centred or authority-centred “self ” and “educator” perception. Recommendations were offered regarding pre-service teacher education
Fields Where the Internet of Things is Used in Education and Effects on These Fields
Authors: AYDIN Abdulkerim
Published: January 2022

The aim of this study is to determine the fields where the Internet of Things (IoT) technology is used in education and to investigate its effects on these fields. In this scope, the fields where IoT studies are carried out in education, the effects of these studies on education and the technologies used in these studies have been examined. In this study, which used document analysis method; the searches were conducted in the “Web of Science” and “ERIC” databases with the keywords “internet of things” and “education”. It was noted that the studies selected during the searching included an IoT application for education. In this context, 748 studies have been reached until May 2020. Since 617 of these studies did not meet the specified criteria, the remaining 131 studies were analyzed. As a result of the analysis; it has been observed that IoT is used more in ubiquitous learning, engineering education, e-learning, laboratory practices. In addition, IoT in education; It is seen that it has the potential to increase access to information from anywhere, student-content interaction, and distance interaction of students to application environments in educational environments. It is noteworthy that in the applications made, the development in sensors, modules, smart devices and network infrastructure is benefited the most.
Music Education and Postgraduate Study: The Case of Dokuz Eylül University
Authors: özevin banu
Published: January 2022

The purposes of this study are to shed light on postgraduate education in Music Teaching and draw inferences about the future by evaluating the Music Teaching Postgraduate Program in Dokuz Eylul University Institute of Educational Sciences. The research is a qualitative study modelled with a single-case embedded study. In accordance with the interlocking single case pattern, the Music Education graduate program was examined by focusing on student, graduate, faculty member, theses. The opinions of 10 students, 23 graduates and 6 faculty members were taken to evaluate the program, and 57 master’s and 20 doctoral theses were examined. As a result of the content analysis,opinions were collected under four main categories. These categories are defined as “institutional goals”, “content”, “program outputs” and “updates”. In the category of program outcomes, the theses were evaluated according to various categories and the professional orientations of the graduates were statistically shared. According to the results of the research, the following conclusions were made: students should be informed at the beginning of the program in order to understand the vision and mission of the institution and to make the process they spent in the education process meaningful; A “scientific research in music education” course should be added to the program in order to conduct qualified research in the field of music education; subjects and research groups in theses should be diversified; faculty members should be role models in preparing thesis and academic studies for their advisors; graduate programs should be updated according to the needs of the time and society.
Lo común y el mundo en común. Una reflexión desde el pensamiento arendtiano
Authors: Muñoz Sanchez Maria Teresa
Published: January 2022

A la luz de la propuesta arendtiana de espacio público, en este artículo se analiza uno de los conceptos que más interés está despertando en el contexto de la llamada filosofía política continental: lo común. Desde una revisión comparada con la obra de C. Laval y P. Dardot enfrento los siguientes interrogantes: ¿Qué perspectivas abre la obra arendtiana en la actual reflexión sobre lo común como principio político articulador? ¿Qué nuevas cuestiones suscita la idea de espacio público como comunidad política de Arendt al confrontarla con la propuesta de lo común?
How government withdrawal affects corporate social performance?
Authors: Khan Farman Ullah , Zhang Junrui , Ullah Sajid , Usman Muhammad , Ali Shahid
Published: January 2022

This study aims to investigate whether government withdrawal affect corporate social responsibility (CSR) performance, and how CEO’s political connection moderates its relationship. We use sample data from Chinese listed firms over the 2010 to 2015 period to test our hypotheses. We find that decrease in state ownership through government withdrawal tends to negatively affect firms’ CSR performance, but the CEO’s political connection weakens its negative relationship and increases the firm’s likelihood towards CSR activities. Our findings imply that firm’s social engagement mainly result from high governmental involvement, and usually from political connections, because such firms are subject to close scrutiny by stakeholders and thus are more likely to improve social performance. Moreover, this research provides important implications to policy makers regarding the social outcomes of government withdrawal and the usefulness of firms’ political connection in developing economies like China.

Este estudio tiene como objetivo investigar si la retirada del gobierno afecta al rendimiento de la responsabilidad social corporativa (RSC), y cómo la conexión política del CEO modera su relación. Utilizamos los datos de una muestra de empresas chinas que cotizan en bolsa durante el período 2010-2015 para comprobar nuestras hipótesis. Encontramos que la disminución de la propiedad estatal a través de la retirada del gobierno tiende a afectar negativamente a los resultados de RSC de las empresas, pero la conexión política del CEO debilita su relación negativa y aumenta la probabilidad de la empresa hacia las actividades de RSC. Nuestras conclusiones implican que el compromiso social de las empresas se debe principalmente a la alta participación gubernamental, y normalmente a las conexiones políticas, porque estas empresas están sometidas a un estrecho escrutinio por parte de las partes interesadas y, por lo tanto, es más probable que mejoren sus resultados sociales. Además, esta investigación ofrece importantes implicaciones para los responsables políticos en relación con los resultados sociales de la retirada del gobierno y la utilidad de la conexión política de las empresas en economías en desarrollo como China.
NIST conference papers fiscal year 2018 :
Authors:   Resources, Access, and Data Team, Information Services Office
Published: January 2022

NIST is committed to the idea that results of federally funded research are a valuable national resource and a strategic asset. To the extent feasible and consistent with law, agency mission, resource constraints, and U.S. national, homeland, and economic security, NIST will promote the deposit of scientific data arising from unclassified research and programs, funded wholly or in part by NIST, except for Standard Reference Data, free of charge in publicly accessible databases. Subject to the same conditions and constraints listed above, NIST also intends to make freely available to the public, in publicly accessible repositories, all peer-reviewed scholarly publications arising from unclassified research and programs funded wholly or in part by NIST. This Special Publication represents the work of Engineering Laboratory researchers at professional conferences, as reported in Fiscal Year 2018. More information on public access to NIST research is available at https://www.nist.gov/open.
Certification of Standard Reference Material 2367 :
Authors: Cleveland Megan H , Toman Blaza , Farkas Natalia , Vallone Peter M
Published: January 2022

Standard Reference Material (SRM) 2367 is intended for use in the value assignment of JC (John Cunningham) virus deoxyribonucleic acid (DNA) to JC virus DNA controls and standards. A unit of SRM 2367 consists of a well characterized, linearized plasmid, containing JC virus DNA solubilized in 10 mmol/L 2-amino-2-(hydroxymethyl)-1,3 propanediol hydrochloride (Tris HCl) and 1 mmol/L ethylenediaminetetraacetic acid disodium salt (disodium EDTA) pH 8.0 buffer (TE), with 50 ng/?L yeast tRNA added to ensure stability. A unit of the SRM consists of one 0.5 mL tube containing approximately 110 ?L of DNA solution. The tube is labeled and is sealed with a screw cap. This publication documents the production, analytical methods, and statistical evaluations involved in producing this SRM.
AN EXPLORATORY REVIEW OF CURRENT TRENDS IN NANODENTISTRY
Authors: REDDY Hima Bindu , CRENA.M Jasmine , PSG Prakash , SUBRAMANİAN Sangeetha , APPUKUTTAN Devapriya
Published: January 2022

Nanotechnology is a cutting-edge concept that is evolving manifolds in various fields of science and medicine and is by no means exceptional to dentistry. Nanotechnology is popularly known as the ‘science of the small’ that deals with particles of size 1-10nm. Methods like top-down or bottom-up approaches are used in manufacturing nanoparticles and nanorobots, catering to the needs of medical diagnostics and therapeutics. Nanorobotics advances medicine through miniaturization from microelectronics to nanoelectronics. Nanotechnology can be applied to all fields of dentistry such as to create nano implants, nano-drug delivery systems, nanocomposites and nano impression materials. Additionally, it helps in orthodontic tooth movement, alleviating hypersensitivity, and effective anesthesia. This paper highlights the various applications of nanotechnology in dentistry and also mentions the clinical trials performed to have a more focused approach to practicing nanodentistry. Apart from this the paper briefly explains the benefits of integrating artificial intelligence and nanotechnology for creating more personalized treatment options and also its role in Covid 19 vaccines.
The Complexity of Poset Games
Authors: Fenner Stephen , Grier Daniel , Gurjar Rohit , Korwar Arpita , Thierauf Thomas
Published: January 2022

The complexity of deciding the winner of poset games was only known to be somewhere between $\textsf{NC}^1$ and $\textsf{PSPACE}$. We resolve this discrepancy by showing that the problem is $\textsf{PSPACE}$-complete. To this end, we give a reduction from Node Kayles.

The reduction yields a 3-level poset game.
Hence the compexity of 2-level games remains an interesting open question.
We make some progress and
give a simple formula allowing one to compute the status of a type of two-level poset game that we call parity-uniform in polynomial time.
This class includes significantly more easily solvable two-level games than was known previously. We also establish general equivalences between various two-level games. These equivalences imply that for any $n$, only finitely many two-level posets with $n$ minimal elements need be considered, and a similar result holds for two-level posets with $n$ maximal elements.
The Degenerate Crossing Number and Higher-Genus Embeddings
Authors: Schaefer Marcus , Štefankovič Daniel
Published: January 2022

If a graph embeds in a surface with $k$ crosscaps, does it always have an embedding in the same surface in which every edge passes through each crosscap at most once? This well-known open problem can be restated using crossing numbers: the degenerate crossing number, $dcr(G)$, of $G$ equals the smallest number $k$ so that $G$ has an embedding in a surface with $k$ crosscaps in which every edge passes through each crosscap at most once. The genus crossing number, $gcr(G)$, of $G$ equals the smallest number $k$ so that $G$ has an embedding in a surface with $k$ crosscaps. The question then becomes whether $dcr(G) = gcr(G)$, and it is in this form that it was first asked by Mohar.

We show that $dcr(G) \leq 3 gcr(G)$, and $dcr(G) = gcr(G)$ as long as $dcr(G) \leq 3$. We can separate $dcr$ and $gcr$ for (single-vertex) graphs with embedding schemes, but it is not clear whether the separating example can be extended into separations on simple graphs. We also show that if a graph can be embedded in a surface with crosscaps, then it has an embedding in that surface in which every edge passes through each crosscap at most twice. This implies that $dcr$ is NP-complete.

Finally, we extend some of these results to the orientable case (and bundled crossing numbers).

Keywords: degenerate crossing number, non-orientable genus, genus crossing number, bundled crossing number.
Las TIC en la didáctica de las ciencias en el ámbito español: revisión sistemática en relación con el tratamiento de competencias digitales
Authors: Marrero Galván Juan José , Negrín Medina Miguel Ángel , González Pérez Paula
Published: January 2022

Las TIC han generado nuevas posibilidades en la enseñanza de las ciencias, pero su integración efectiva en el aula supone un reto, lo que pone de manifiesto la importancia del desarrollo competencial digital de los docentes. Con el fin de conocer la incorporación de las TIC en la enseñanza de las ciencias en el ámbito educativo español, se ha realizado una revisión bibliográfica en seis revistas de Didáctica de las Ciencias Experimentales de reconocido prestigio. Los resultados muestran que en el periodo de marzo de 1983 a diciembre de 2019 se han publicado 202 artículos TIC. El análisis y categorización de estas publicaciones permite concluir aportes significativos en áreas como la pedagogía digital, el compromiso profesional y los recursos digitales; aunque también se evidencia que se requiere mayor atención en relación con la evaluación y promoción de la competencia digital de los estudiantes.
Enfoque epistemológico y experimental en la enseñanza de las ciencias, una estrategia didáctica para el aprendizaje de la teoría de la luz de Newton
Authors: Vargas Vargas Sergio Joan , Carmona Ramírez Luis Hernando
Published: January 2022

La controversia que se dio en el siglo XVII en torno a la naturaleza de la luz y la formación de los colores por refracción es un interesante ejemplo de cómo se dan las revoluciones en la conceptualización de un fenómeno y del carácter revelador que puede tener un experimento. El objetivo de este estudio consistió en implementar una estrategia para el fortalecimiento del aprendizaje de la teoría de la luz de Newton a partir de la experimentación y la epistemología. La muestra la conformaron 15 estudiantes, a los que se les realizó una prueba inicial y una prueba final, después de aplicado el tratamiento con actividades experimentales. Los resultados evidenciaron cómo los educandos mejoraron en sus desempeños académicos, mostrando que la estrategia pedagógica favorece la aprehensión de la teoría de la luz, convirtiéndose en un interesante recurso pedagógico para la enseñanza de contenidos de carácter científico.
La alfabetización científica en estudiantes de Formación Profesional Básica a través de una secuencia adaptada hacia la inclusión educativa
Authors: Lopez Santos Sandra , De las Heras Pérez María de los Ángeles , Jiménez Pérez Roque
Published: January 2022

El alumnado de Formación Profesional Básica (FPB) se encuentra, con frecuencia, desmotivado ante los estudios. El alumnado de esta investigación, además, se halla en riesgo de exclusión social, caracterizándose por presentar carencias académicas, sociales, personales y emocionales. El presente trabajo, con el objetivo de alcanzar la inclusión educativa, pretende analizar el proceso de alfabetización científica de 10 de estudiantes de FPB utilizando una secuencia didáctica, cuyo diseño metodológico se basa en los principios de la educación situada. Para medir su alcance, se ha utilizado un test de contenidos adaptados que se pasa de forma previa y posterior a la secuencia y una narrativa dirigida a conocer la percepción del alumnado durante el proceso. Las respuestas son analizadas utilizando una rúbrica y una tabla de categorías. Se observa el desarrollo de aspectos que ponen en evidencia cómo la experiencia ha conseguido la inclusión educativa del alumnado.
La formación inicial en Didáctica de las Ciencias Sociales según el alumnado egresado
Authors: Darouech Sanae , Felices de la Fuente María del Mar
Published: January 2022

Este estudio profundiza en la formación inicial para enseñar Ciencias Sociales, con objeto de conocer su impacto en el alumnado universitario, detectar posibles deficiencias e incorporar mejoras. Para ello, hemos establecido dos objetivos: conocer la valoración del alumnado egresado sobre dicha formación e indagar en las competencias que consideran haber adquirido. El enfoque de investigación ha sido mixto, empleando un cuestionario que fue contestado por 62 participantes y una entrevista semiestructurada que se desarrolló con dos maestras recién tituladas. Los resultados muestran una opinión generalmente positiva de la formación recibida, aunque se destacan aprendizajes mayoritariamente teóricos y conceptuales, el uso excesivo de metodologías expositivas, y un nivel de capacitación relativo. Como conclusión, destacamos la necesidad de incorporar nuevos contenidos y enfoques prácticos en la formación inicial en Didáctica de las Ciencias Sociales, a fin de mejorar las competencias profesionales de los futuros docentes.
El silencio público de la poesía erótica dieciochesca
Authors: Rocamora Montenegro Raquel
Published: January 2022

Es de sobra conocido el silencio al que ha sido relegado el subgénero erótico a lo largo de los siglos debido a su contenido subversivo, contrario a las normas morales de buena conducta. La plasmación de comportamientos estigmatizados, estrechamente vinculados con la libertad sexual, ha sido tradicionalmente perseguida y ha sufrido las consecuencias de la censura. La poesía erótica dieciochesca se revela como un claro exponente de ello, pese a que su cultivo tiene lugar en una época en la que se avanza paulatinamente hacia nuevas formas de entender la sociabilidad y la sexualidad. En este contexto, surgen composiciones que se desvían de las normas dictadas por el Estado y la Inquisición y que, por ende, se ven alejadas de canales oficiales de circulación literaria. En consecuencia, la mayoría de sus autores –Samaniego, Meléndez Valdés, etc.–, que recurren a estrategias desidentitarias como el anonimato y la autocensura, se ven obligados a difundirlas de manera manuscrita y clandestina entre círculos más o menos cercanos.
En torno a la identidad inestable del sujeto que viaja y escribe hoy en día: el caso de Miquel Silvestre
Authors: Zygmunt Karolina
Published: January 2022

El poder transformador del viaje y de su escritura parecen innegables. Ambas experiencias llevan al sujeto que las realiza a experimentarse, cuestionarse e intentar definirse. No obstante, en el caso de quienes viajan y escriben hoy en día, también la pregunta por el propio estatus profesional puede llegar a ser una cuestión identitaria. En este trabajo, para examinar esta compleja relación entre viajar, escribir, trabajar, vivir y autodefinirse, se analizará la figura de Miquel Silvestre, autor que ejemplifica la búsqueda de identidad personal a través de la profesionalización de su labor de escribir sobre los viajes. En el caso de Silvestre, convertirse en un escritor de viajes profesional significa construirse como sujeto, lo que afecta y modifica tanto su escritura como su experiencia del viaje, tal y como se ve reflejado en sus relatos de viajes La emoción del nómada (2013) y Nómada en Samarkanda (2016).
Exilio e identidad en los relatos de Luisa Carnés
Authors: Caño Rivera Claudia
Published: January 2022

En este artículo analizamos los relatos de Luisa Carnés, quien parte al exilio como consecuencia de la Guerra Civil. La separación de su hogar da como resultado la representación de una serie de temas en su narrativa breve escrita desde México que suponen, por una parte, la continuación de aquellos iniciados en España desde una perspectiva distinta y, por otra parte, la aceptación de los temas prototípicos de la cultura de acogida. Así, el exilio marca la identidad de la escritora, que se ve escindida entre el recuerdo de su hogar y la adaptación al país que la acoge.
La construcción de la identidad femenina en tres memorias del exilio español (Doble esplendor, Memorias de una mujer sin piano y Antes que sea tarde)
Authors: García Davó Celia
Published: January 2022

Constancia de la Mora, Jeanne Rucar y Carmen Parga elaboran sus libros de memorias durante el exilio republicano español. En este estudio mostramos la forma en que estas mujeres se acogen al modelo de la literatura confesional con un propósito “terapéutico” que incluye la necesidad íntima de configurar un discurso de afirmación, justificación y reconstrucción personal. De este modo, a partir de una concepción de la literatura memorialística como proceso reparador del yo y tomando como eje teórico vertebrador de nuestro análisis la relación entre el discurso autobiográfico y la construcción identitaria femenina, se analiza principalmente la figura del sujeto narrativo con el fin de abordar el vínculo existente entre género, memoria y autorrepresentación.
El nomadismo contemporáneo y el sentimiento de pertenencia. El jinete polaco, de Antonio Muñoz Molina y El viajero del siglo, de Andrés Neuman: dos casos paradigmáticos
Authors: Enache vic Irina
Published: January 2022

Este artículo se propone estudiar el nomadismo contemporáneo y sus implicaciones identitarias en relación con la noción de pertenencia. Una reflexión antropológica y filosófica en tono al concepto de ‘nomadismo’ intentará evidenciar los fundamentos del revival contemporáneo de este fenómeno como modo cada vez más generalizado de estar en el mundo y distinguir, en la estela de Braidotti y Maffesoli, dos modalidades: el ‘nomadismo desarraigado (o descentrado)’ y el ‘nomadismo dinámicamente arraigado’. Examinaremos sus características en los protagonistas de las novelas El jinete polaco (1991) de Antonio Muñoz Molina y El viajero del siglo (2009) de Andrés Neuman, que ilustran, a nuestro modo de ver, los dos tipos de identidades nómadas.
Las coordenadas de la identidad en las producciones culturales hispánicas
Authors: Morant Giner María , Lorente Queralt Núria , Molina Gil Raúl
Published: January 2022

Introducción monográfico "Las coordenadas de la identidad en las producciones culturales hispánicas", correspondiente al número 10 de Diablotexto Digital.
Carmen Gaitán Salinas (ed.): “Manuela Ballester mis días en México. Diarios (1939-1953)”
Authors: De Dios Lucrecia
Published: January 2022

Reseña crítica de Carmen Gaitán Salinas (ed.): Manuela Ballester mis días en México. Diarios (1939-1953)
Andrés García Cerdán: "El árbol del lenguaje. Sobre la poesía de Julio Cortázar"
Authors: Nicolás Violeta
Published: January 2022

Reseña de Andrés García Cerdán: El árbol del lenguaje. Sobre la poesía de Julio Cortázar
Las coordenadas de la identidad en las producciones culturales hispánicas
Authors: Souto Luz
Published: January 2022

Volumen 10 de la revista Diablotexto Digital: Las coordenadas de la identidad en las producciones culturales hispánicas, coordinado por María Morant Giner, Núria Lorente Queralt, Raúl Molina Gil.
Does Core Competence Affect Corporate Social Responsibility?
Authors: Sun Changling , Skapa Stanislav , Liu Jinzhao , Horak Jakub , Yang Yaning
Published: January 2022

Core competence is the key factor in the competitiveness of enterprises. This study examines whether enterprises with stronger core competence have the ability and motivation to fulfill more corporate social responsibilities. Taking the non-financial companies listed in the A-share market in China from 2010 to 2019 as the research samples, this paper constructs the measurement index of core competence by text analysis method and empirically tests the impact of core competence on corporate social responsibility. We find that the stronger the core competence is, the higher the corporate social responsibility will be, which means core competence can significantly improve corporate social responsibility. This conclusion remains significant after a series of robustness tests. The mechanism test shows that the impact of core competence on corporate social responsibility is realized by enhancing financial strength and increasing external attention. Further research shows that the relationship between core competence and corporate social responsibility are affected by the nature of the enterprise and the degree of market competition. When the enterprise is a non-state-owned enterprise or the industry competition is more intense, the influence of core competence on corporate social responsibility is stronger. This paper reveals the important impact of core competence on corporate social responsibility, which not only enriches the literature on the economic consequences of core competence and the influencing factors of corporate social responsibility but also has a certain practical significance for how to improve corporate social responsibility.
New Product Creativity Mediating the Relationship Between Organizational Bricolage and the Competitive Advantage of SMEs
Authors: Tian Hongyun , Otchere Samuel Kofi , Dogbe Courage Simon Kofi , Addy Winfred Okoe , Hammond Frank
Published: January 2022

It is well-documented in literature that one major challenge facing Small and Medium-sized Enterprises (SMEs) is resource constraints. This affects SMEs’ potential for innovation, as innovation is resource-intensive. To survive the competition, it is expedient that SMEs find more creative and innovative ways to operate. This present study sought to ascertain how SMEs could adopt a bricolage strategy to achieve a competitive advantage. The study also sought to determine the mediating role of new product creativity in this relationship, which formed a key contribution. Data was gathered from 334 SMEs using a simple random sampling technique. The data was analyzed using the covariance-based structural equation modelling (CB-SEM) approach in Amos (v.23). Various validity and reliability tests were run before testing the significance of the various hypotheses of the study. It was concluded that bricolage had a direct positive effect on SMEs’ competitive advantage. Bricolage further had a direct positive impact on new product creativity, whiles new product creativity had a direct positive effect on SMEs’ competitive advantage. It was also realized that creativity had a partial mediating effect on the relationship between bricolage and SMEs’ competitive advantage. Although this study did not directly assess the influence of the COVID-19 pandemic on business operations, the data for the study was gathered during the pandemic period, as such, the results of this present study could offer some practical clues on how firms could achieve competitive advantage during the outbreak of pandemics.
Exact Modular $S$ Matrix for ${\mathbb Z}_{k}$ Parafermion Quantum Hall Islands and Measurement of Non-Abelian Anyons
Authors:   Marin Drinov Academic Publishing House, Georgiev Lachezar S.
Published: January 2022

Using the decomposition of rational conformal filed theory characters for the $\Z_k$ parafermion quantum Hall droplets for general $k=2,3,\dots$, we derive analytically the full modular $S$ matrix for these states, including the $\uu$ parts corresponding to the charged sector of the full conformal field theory and the neutral parafermion contributions corresponding to the diagonal affine coset models. This precise neutral-part parafermion $S$ matrix is derived from the explicit relations between the coset matrix and those for the numerator and denominator of the coset and the latter is expressed in compact form due to the level-rank duality between the affine Lie algebras $\widehat{\frak{su}(k)_2}$ and $\widehat{\frak{su}(2)_k}$. The exact results obtained for the $S$ matrix elements are expected to play an important role for identifying interference patterns of fractional quantum Hall states in Fabry-P\'erot interferometers which can be used to distinguish between Abelian and non-Abelian statistics of quasiparticles localized in the bulk of fractional quantum Hall droplets as well as for nondestructive interference measurement of Fibonacci anyons which can be used for universal topological quantum computation
Participation in wiki communities: reconsidering their statistical characterization
Authors: Tenorio-Fornés Ámbar , Arroyo Javier , Hassan Samer
Published: January 2022

Peer production online communities are groups of people that collaboratively engage in the building of common resources such as wikis and open source projects. In such communities, participation is highly unequal: few people concentrate the majority of the workload, while the rest provide irregular and sporadic contributions. The distribution of participation is typically characterized as a power law distribution. However, recent statistical studies on empirical data have challenged the power law dominance in other domains. This work critically examines the assumption that the distribution of participation in wikis follows such distribution. We use statistical tools to analyse over 6,000 wikis from Wikia/Fandom, the largest wiki repository. We study the empirical distribution of each wiki comparing it with different well-known skewed distributions. The results show that the power law performs poorly, surpassed by three others with a more moderated heavy-tail behavior. In particular, the truncated power law is superior to all competing distributions, or superior to some and as good as the rest, in 99.3% of the cases. These findings have implications that can inform a better modeling of participation in peer production, and help to produce more accurate predictions of the tail behavior, which represents the activity and frequency of the core contributors. Thus, we propose to consider the truncated power law as the distribution to characterize participation distribution in wiki communities. Furthermore, the truncated power law parameters provide a meaningful interpretation to characterize the community in terms of the frequency of participation of occasional contributors and how unequal are the group of core contributors. Finally, we found a relationship between the parameters and the productivity of the community and its size. These results open research venues for the characterization of communities in wikis and in online peer production.
Characteristics of Central American brocket deer resting sites in a tropical mountain cloud forest in eastern Mexico
Authors: Muñoz Vazquez Brenda , Gallina Tessaro Sonia , León-Paniagua Livia
Published: January 2022

The Central American brocket deer is a vulnerable species. Geographically isolated populations have been affected by poaching and habitat fragmentation, leading to local extinctions. It is therefore important to understand this species’ habitat characteristics, particularly of resting sites, which play a crucial role in survival and fitness. We describe the characteristics and distribution patterns of Central American brocket deer resting sites at the microhabitat and landscape scales in San Bartolo Tutotepec, Hidalgo, México. We conducted eight bimonthly field surveys between November 2017 and March 2019, consisting of 32 transects of 500 m length to search for fecal pellets, footprints, scrapes, and browsed plants. At each resting site we identified, we measured canopy closure, horizontal thermal cover, protection from predators for fawns and adults, escape routes, slope from the ground, presence of scrapes, cumulative importance value of the edible plant species, and distance from the resting site to the nearest water resource to characterize the site at the microhabitat scale. At the landscape scale, we identified the type of biotope, elevation, aspect, and slope. We compared all of these parameters from resting sites with a paired randomly selected site to serve as a control. We performed a multiple logistic regression to identify the parameters associated with the resting sites and a point pattern analysis to describe their distribution. We characterized 43 resting sites and their corresponding control plots. At the microhabitat scale, resting sites were associated with higher vertical thermal cover, more concealment cover, more escape routes, more edible plant species, higher slope from the ground, and closer distance to water resources. At the landscape scale, resting sites were associated with beech forest, oak forest, secondary forest, and ravine biotopes and negatively associated with pine forest, houses, and roads. Resting sites had an aggregated spatial pattern from 0 to 900 m, but their distribution was completely random at larger scales. Our study revealed that Central American brocket deer selected places with specific characteristics to rest, at both microhabitat and landscape scales. We therefore suggest that existing habitat be increased by reforesting with native species—particularly Mexican beech forest and oak forest—to improve the deer’s conservation status in the study area.
Comparative genomics of the black rot pathogen Xanthomonas campestris pv. campestris and non-pathogenic co-inhabitant Xanthomonas melonis from Trinidad reveal unique pathogenicity determinants and secretion system profiles
Authors: Ramnarine Stephen D. B. Jr. , Jayaraman Jayaraj , Ramsubhag Adesh
Published: January 2022

Black-rot disease caused by the phytopathogen Xanthomonas campestris pv. campestris (Xcc) continues to have considerable impacts on the productivity of cruciferous crops in Trinidad and Tobago and the wider Caribbean region. While the widespread occurrence of resistance of Xcc against bactericidal agrochemicals can contribute to the high disease burdens, the role of virulence and pathogenicity features of local strains on disease prevalence and severity has not been investigated yet. In the present study, a comparative genomic analysis was performed on 6 pathogenic Xcc and 4 co-isolated non-pathogenic Xanthomonas melonis (Xmel) strains from diseased crucifer plants grown in fields with heavy chemical use in Trinidad. Native isolates were grouped into two known and four newly assigned ribosomal sequence types (rST). Mobile genetic elements were identified which belonged to the IS3, IS5 family, Tn3 transposon, resolvases, and tra T4SS gene clusters. Additionally, exogenous plasmid derived sequences with origins from other bacterial species were characterised. Although several instances of genomic rearrangements were observed, native Xcc and Xmel isolates shared a significant level of structural homology with reference genomes, Xcc ATCC 33913 and Xmel CFBP4644, respectively. Complete T1SS hlyDB, T2SS, T4SS vir and T5SS xadA, yapH and estA gene clusters were identified in both species. Only Xmel strains contained a complete T6SS but no T3SS. Both species contained a complex repertoire of extracellular cell wall degrading enzymes. Native Xcc strains contained 37 T3SS and effector genes but a variable and unique profile of 8 avr, 4 xop and 1 hpa genes. Interestingly, Xmel strains contained several T3SS effectors with low similarity to references including avrXccA1 (~89%), hrpG (~73%), hrpX (~90%) and xopAZ (~87%). Furthermore, only Xmel genomes contained a CRISPR-Cas I-F array, but no lipopolysaccharide wxc gene cluster. Xmel strains were confirmed to be non-pathogenic by pathogenicity assays. The results of this study will be useful to guide future research into virulence mechanisms, agrochemical resistance, pathogenomics and the potential role of the co-isolated non-pathogenic Xanthomonas strains on Xcc infections.
First report of fatty acids in Mimosadiplotricha bee pollen with in vitro lipase inhibitory activity
Authors: Khongkarat Phanthiwa , Traiyasut Prapun , Phuwapraisirisan Preecha , Chanchao Chanpen
Published: January 2022

Bee pollen (BP) is full of nutrients and phytochemicals, and so it is widely used as a health food and alternative medicine. Its composition and bioactivity mainly depend on the floral pollens. In this work, BP collected by Apis mellifera with different monoculture flowering crops (BP1-6) were used. The types of floral pollen in each BP were initially identified by morphology, and subsequently confirmed using molecular phylogenetic analysis. Data from both approaches were consistent and revealed each BP to be monofloral and derived from the flowers of Camellia sinensis L., Helianthus annuus L., Mimosa diplotricha, Nelumbo nucifera, Xyris complanata, and Ageratum conyzoides for BP1 to BP6, respectively. The crude extracts of all six BPs were prepared by sequential partition with methanol, dichloromethane (DCM), and hexane. The crude extracts were then tested for the in vitro (i) α-amylase inhibitory, (ii) acetylcholinesterase inhibitory (AChEI), and (iii) porcine pancreatic lipase inhibitory (PPLI) activities in terms of the percentage enzyme inhibition and half maximum inhibitory concentration (IC50). The DCM partitioned extract of X. complanata BP (DCMXBP) had the highest active α-amylase inhibitory activity with an IC50 value of 1,792.48 ± 50.56 µg/mL. The DCM partitioned extracts of C. sinensis L. BP (DCMCBP) and M. diplotricha BP (DCMMBP) had the highest PPLI activities with an IC50 value of 458.5 ± 13.4 and 500.8 ± 24.8 µg/mL, respectively), while no crude extract showed any marked AChEI activity. Here, the in vitro PPLI activity was focused on. Unlike C. sinensis L. BP, there has been no previous report of M. diplotricha BP having PPLI activity. Hence, DCMMBP was further fractionated by silica gel 60 column chromatography, pooling fractions with the same thin layer chromatography profile. The pooled fraction of DCMMBP2-1 was found to be the most active (IC50 of 52.6 ± 3.5 µg/mL), while nuclear magnetic resonance analysis revealed the presence of unsaturated free fatty acids. Gas chromatography with flame-ionization detection analysis revealed the major fatty acids included one saturated acid (palmitic acid) and two polyunsaturated acids (linoleic and linolenic acids). In contrast, the pooled fraction of DCMMBP2-2 was inactive but pure, and was identified as naringenin, which has previously been reported to be present in M. pigra L. Thus, it can be concluded that naringenin was compound marker for Mimosa BP. The fatty acids in BP are nutritional and pose potent PPLI activity.
PHOTOCATALYTIC MORTAR WITH TIO2 FOR THE REDUCTION OF AIR POLLUTANTS PRODUCED BY VEHICULAR EMISSIONS
Authors:   North Private University (Peru), Aquise Edwin Jhon , Chirinos Peralta Katherine Lissette ,   North Private University (Peru)
Published: January 2022

Photocatalytic mortar with TiO2 leads to a reduction in air pollution due to vehicle emissions. For this purpose, the experimental method was used, which consisted of the preparation of mortars with the same proportion of 1: 4, a strength of 145 kg / cm2 and with different percentages of titanium dioxide (0% and 10%), which were evaluated under the same conditions through the following tests: Quantity of polluting gases, compressive strength and photocatalytic capacity. The results obtained—reduction of carbon dioxide by 97.9%, hydrogen sulfide by 72.9%, sulfur dioxide by 67.2%, nitrogen monoxide by 63.4%, carbon monoxide by 40.5% and oxygen recovery by 7.7%—confirmed the performance of the photocatalytic process through titanium dioxide (TiO2) in terms of an improvement in air quality, and the reduction of colorants, rhodamine by 89.10% and methylene blue 53.06% confirmed its self-cleaning capacity, thus improving the reduction of air pollution.
RESISTANCE FACTOR CALIBRATION FOR PERFORATED COLD-FORMED STEEL COMPRESSION MEMBERS
Authors:   Federal University of Ouro Preto Brazil, Faragó Jardim Roberta Layra , da Rocha Freitas Marcilio Sousa ,   Federal University of Ouro Preto Brazil, Riqueira Brandão André Luís ,   Federal University of Ouro Preto Brazil
Published: January 2022

Cold-formed Steel profiles are structural profiles widely used in civil construction. They are often manufactured with perforations. The designing can be performed using the direct resistance method. Formulations were adapted by Moen and Schafer (2008) to consider the presence of perforations in these profiles. The objective of this study is to investigate the structural safety of columns with web perforations. The calculation of the resistance capacity was performed using the formulations proposed by the authors. The reliability indexes were determined using the First Order Reliability Method (FORM), First Order Second Moment (FOSM) and Monte Carlo Method (MCM), which are reliability methods for the Load and Resistance Factor Design (LRFD) and Limit States Design (LSD) philosophies. Following the same criteria performed by AISI S100, the resistance factors were obtained from the FOSM method. Based on the results, it was found that the desired security level for the LSD philosophy was not achieved. The calculated resistance factors are predominantly lower than the target. However, for the LRFD philosophy, the safety level was achieved, and the resistance factors were higher than the target.