bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimization and characterization of a PCF-based SPR sensor for enhanced sensitivity and reliability in diverse chemical and biological applications
Authors: Mukhopadhyay Abhijit Kumar , Sarkar Santu , Mukherjee Subhadeep , Das N. R.
Published: November 2024

This paper presents the meticulous design and characterization of a photonic crystal fiber (PCF)-based surface plasmon resonance (SPR) sensor, analyzed using finite element method (FEM) simulations. The sensor’s superior performance is demonstrated by its exceptional sensitivity to minute changes in the refractive index (RI) of various analytes. The optimized structure reveals a peak resonance at 0.78898 µm with a maximum confinement loss of 546.34 dB/cm. Detailed investigations show resonance wavelength red shifts of up to 0.93% with a 5% increase in air hole diameter and blue shifts of up to 0.88% with a 5% decrease. Additionally, variations in the plasmonic gold layer thickness result in resonance shifts of up to 0.76% longer or 0.87% shorter wavelengths. The sensor achieves remarkable wavelength sensitivity (WS) of up to 13,000 nm/RIU and amplitude sensitivity (AS) of up to 1538.90RIU−1, underscoring its high precision in detecting analyte concentration changes. The design’s robustness against fabrication errors, evidenced by minimal variations in resonance characteristics, highlights its practical reliability. Furthermore, the use of a polynomial regression model with an R2 value near unity accurately approximates the relationship between resonance wavelength and analyte RI, ensuring precise sensing capabilities without overfitting. Comparative analysis with existing designs confirms the sensor’s superior performance, rendering it highly suitable for a wide range of applications, including biosensing of glucose, water contaminated by cholera germs, mucosa of the human intestine, important components of human blood, and detection of chemicals like acetone, ethanol, benzene, propanol, glycerol, and expired transformer oil.
Research on dual-frequency ratio frequency discrimination technique for Rayleigh wind measurement lidar
Authors: Shi Wei , Wu Decheng , Li Cheng , Deng Qian
Published: November 2024

A dual-frequency ratio frequency discrimination technique for Rayleigh wind measurement lidar was proposed. The basic principles of molecular scattering Doppler wind lidar were introduced, and the optical path structure of the frequency discrimination system was analyzed. Based on the detection requirements, the parameters of the Fabry-Perot etalon in the frequency discrimination system, including the free spectral range (FSR), full width at half maximum (FWHM), and dual-frequency laser interval, were optimized in detail. Using the overall system design parameters, theoretical simulations were conducted on the system's velocity sensitivity, signal-to-noise ratio (SNR), and measurement accuracy.
Edge mode resonance in the dark state by a finite beam
Authors: Ko Y. H. , Magnusson R.
Published: November 2024

We treat edge-mode resonance that may exist at boundaries of transversely finite beams illuminating a photonic lattice. The lattice is in the dark state signifying a perfect bound state in the continuum (BIC). The dark state is non-radiative in symmetric systems because lateral waves cannot couple to the lattice due to destructive interference between counter-propagating waves. However, if the incident beam is spatially finite, the balance is broken at beam boundaries, and edge modes are induced supporting local electromagnetic fields. Numerical studies illustrate key properties including coupled-wave near fields, spectral signatures at resonance, and local field profiles for representative beam geometries. The work contributes fundamentally to the understanding of resonant metasurfaces that are of high scientific interest worldwide.
Dual polarization-independent quasi-bound states in the continuum in a hetero-out-of-plane dielectric metasurface
Authors: Sun Guanghou , Chao Xingbing , Liu Jianqiang , Yu Jianmin , Xu Gaoping
Published: November 2024

Symmetry-protected quasi-bound states in the continuum (qBICs) in metasurfaces with broken in-plane symmetry are extensively investigated to achieve high quality-factor (Q-factor) resonances. Herein, we propose the hetero-out-of-plane (H-OP) dielectric metasurface, which is composed of Si cuboids tetramer broken out-of-plane symmetry by adding a layer of silica. Dual polarization-independent qBICs are realized. The multipolar decomposition of scattering powers and near-field distributions reveal the physical mechanism of dual qBICs modes, which are dominated by the magnetic quadrupole and the toroidal dipole. The two symmetry-protected qBICs in the H-OP metasurface have robust Q-factors and stable resonance wavelengths compared with these in the out-of-plane metasurface. Our results provide a route to achieve the high Q-factor resonator with better performance applied in many optical and optoelectronic devices.
Perceptions of distinctions between patient and healthcare zones among intensive care unit nurses at a Korean tertiary hospital: A cross-sectional study
Authors: Chang Hayoung , Kang JaHyun
Published: November 2024

Background

Intensive care unit (ICU) patients face higher infection risks from invasive procedures, highlighting the critical role of ICU nurses in infection prevention. Clear differentiation between the patient and healthcare zones is essential for effective hand hygiene and disinfection, yet research on this topic is limited.

Aim

To assess ICU nurses’ perception of the concept of patient and healthcare zones and evaluate their similarity and accuracy in identifying the zones.

Methods

A descriptive survey was conducted at a 2,732-bed tertiary hospital in Korea from 28 July to 27 August 2022. Participants were recruited from various ICUs through flyers. 225 questionnaires—with illustrations 27 item locations for three ICU scenarios—were made available at nursing stations for voluntary completion. Participants were asked to classify items into the patient zone or the healthcare zone. Similarity scores reflected participant agreement, while accuracy scores measured the proportion of correct answers. Participants’ free-text opinions regarding zone classification were analysed thematically.

Findings

104 nurses participated voluntarily. Average similarity and accuracy were 84.7% and 82.7%, respectively. The top 8 items, with over 97% similarity and accuracy, were all frequently in contact with ICU patients (e.g., pulse oximeter, Levin tube, central line, urine bag, and patient bed). The bottom 7 items, with less than 80%, included the glucometer, flashlight, trolley, and sink. Participants with higher education levels had significantly higher similarity (p = .044) and accuracy (p = .033), whereas those already familiar with the patient-zone concept had significantly higher accuracy (p = .009). From the free-text analysis, participants considered factors beyond proximity to the patient, such as patient contact, room type, and distance.

Conclusions

To address zone classification challenges, clear criteria for patient and healthcare zones, space redesign, and educational programs are recommended. Further research is necessary to improve greater clarity and consensus regarding patient and healthcare zones to enhance infection control practices.
Repurposing of drug candidates against Epstein–Barr virus: Virtual screening, docking computations, molecular dynamics, and quantum mechanical study
Authors: Ibrahim Mahmoud A. A. , Hassan Alaa M. A. , Mohamed Eslam A. R. , Mekhemer Gamal A. H. , Sidhom Peter A. , El-Tayeb Mohamed A. , Khan Shahzeb , Shoeib Tamer , Soliman Mahmoud E. S. , Abdelrahman Alaa H. M.
Published: November 2024

Epstein–Barr virus (EBV) was the first tumor virus identified in humans, and it is mostly linked to lymphomas and cancers of epithelial cells. Nevertheless, there is no FDA-licensed drug feasible for this ubiquitous EBV viral contagion. EBNA1 (Epstein-Barr nuclear antigen 1) plays several roles in the replication and transcriptional of latent gene expression of the EBV, making it an attractive druggable target for the treatment of EBV-related malignancies. The present study targets EBV viral reactivation and upkeep by inhibiting EBNA1 utilizing a drug-repurposing strategy. To hunt novel EBNA1 inhibitors, a SuperDRUG2 database (> 4,600 pharmaceutical ingredients) was virtually screened utilizing docking computations. In accordance with the estimated docking scores, the most promising drug candidates then underwent MDS (molecular dynamics simulations). Besides, the MM-GBSA approach was applied to estimate the binding affinities between the identified drug candidates and EBNA1. On the basis of MM-GBSA//200 ns MDS, bezitramide (SD000308), glyburide (SD001170), glisentide (SD001159), and glimepiride (SD001156) unveiled greater binding affinities towards EBNA1 compared to KWG, a reference inhibitor, with ΔGbinding values of −44.3, −44.0, −41.7, −40.2, and −32.4 kcal/mol, respectively. Per-residue decomposition analysis demonstrated that LYS477, ASN519, and LYS586 significantly interacted with the identified drug candidates within the EBNA1 binding pocket. Post-dynamic analyses also demonstrated high constancy of the identified drug candidates in complex with EBNA1 throughout 200 ns MDS. Ultimately, electrostatic potential and frontier molecular orbitals analyses were performed to estimate the chemical reactivity of the identified EBNA1 inhibitors. Considering the current outcomes, this study would be an adequate linchpin for forthcoming research associated with the inhibition of EBNA1; however, experimental assays are required to inspect the efficiency of these candidates.
COVID-19 and the risk and trajectory of frailty in community- or institution-dwelling individuals: Protocol for systematic review and meta-analysis
Authors: Mehta Saurabh P. , Faieta Julie M. , Swartz Maria Chang , Blevins Emily W. , Negm Ahmed M. , Dal Bello-Haas Vanina P. M.
Published: November 2024

The purpose of this paper is to describe a protocol for a systematic review (SR) and meta-analysis examining the associations between an episode of COVID-19 and trajectory as well as the risk of frailty. The protocol for this SR has been registered in the PROSPERO database (CRD42023468297) and conforms to the guidelines proposed by the Preferred Reporting Items for Systematic Reviews (PRISMA). The search strategy will involve retrieving literature from six different databases and will be guided by keywords encompassing population (community-dwelling or institution-dwelling adults), exposure (episode of COVID-19), and outcome (frailty). The citations retrieved from the search process will be screened for their eligibility. The risk of bias for the articles identified to be eligible for the review will be examined using the Quality In Prognosis Studies (QUIPS) tool. The Metafor package in R will be used for quantitative data synthesis of the literature. Grading of Recommendations Assessment, Development and Evaluation (GRADE) will be used to assess the quality and certainty of the body of evidence. This systematic review will provide crucial information to determine whether an episode of COVID-19 is associated with an increased risk of frailty. The results of this review will have significant clinical implications in mitigating the risk of frailty after COVID-19.
Student behavior at university: The development and validation of a 10-dimensional scale
Authors: Maloshonok Natalia , Vilkova Kseniia
Published: November 2024

This study proposes the multidimensional concept of ‘student behavior at university’ and methodology for its quantitative investigation. Unlike previous concepts related to aspects of the student experience, the idea of student behavior considers the combinations and interrelations of individual and environmental characteristics affecting student experience and outcomes. It provides a new lens for viewing student experience at university, highlighting the multifacetedness of this phenomenon and the diversity of possible patterns of student behavior. Based on the conceptual model, a ten-dimensional scale measuring student behavior was developed and validated through mixed-method research with an exploratory sequential design. The following dimensions of student behavior were identified: 1) interaction with course content in class; 2) persistence; 3) self-learning; 4) irresponsible learning behavior; 5) active learning; 6) friendship; 7) study collaboration; 8) obedience; 9) creating a positive self-image; and 10) extracurricular involvement. To develop a survey instrument, we utilized semistructured in-depth interviews with Russian students (n = 119). In the quantitative phase of the study, based on the survey (n = 1,253) carried out at seven highly selective Russian universities, we tested the reliability and validity of the ten-dimensional scale. To test construct-related validity, we utilized the self-determination theory developed by Ryan and Deci and a short version of the Academic Motivation Scale developed by Gordeeva, Sychev, and Osin for the Russian educational context. Our findings are in line with assumptions of self-determination theory and the results of previous studies and can be considered evidence of construct validity. The directions for further development of the methodological approach and its practical implications are discussed.
Does the green finance policy affect the efficiency of corporate investment? Evidence from China’s green finance reform and innovation pilot zones
Authors: Wang Hongxin , Shao Rong
Published: November 2024

In the context of promoting the orderly expansion of capital investment and rational allocation of resources to achieve green and circular economic development. Green finance, as a new engine to promote the sustainability of enterprises, holds significant importance in exploring the positive effect of green finance policies on optimizing the investment decisions of enterprises and guiding them to efficiently utilize their resources to maximize value creation. Using A-share listed companies in Shanghai and Shenzhen from 2012 to 2022 as the research sample, we apply the Difference-in-Differences (DID) method to test the impact of the green finance reform and innovation pilot zones (2017) on the investment efficiency of enterprises in the pilot regions. We also adopt a two-step method to test the mechanisms of financial resource misallocation and agency costs. The study reveals that the green finance policy significantly enhances the investment efficiency of enterprises in the pilot areas. Financial resource misallocation and agency costs are important influence mechanisms. Drawing on resource allocation theory and agency theory, the study concludes that the green finance policy alleviates financial resource misallocation by directing financial resources toward high-efficiency enterprises. Moreover, the policy effectively reduces agency conflicts caused by power separation and information asymmetry, ensuring that enterprises can maximize the benefits of their investments. Heterogeneity analysis shows that non-state-owned enterprises and low-tech innovative enterprises in the pilot areas have disadvantages in terms of capital stock and loan credit, so the policy can improve their investment efficiency effectively. Based on these findings, we recommend that to leverage the positive effects of the green finance policy, it is essential to enhance the guiding role of the government, strengthen market mechanisms, and bolster corporate initiatives. This study complements the research on the economic effects of location-orientated comprehensive green finance policies on enterprises, considering the dual aspects of resource allocation efficiency and corporate governance, and makes up for the shortcomings of the existing literature. The study’s conclusions offer valuable insights for enhancing green finance to support enterprises in achieving efficient production.
Microdissection testicular sperm extraction outcomes in azoospermic patients post-orchidopexy surgery: A systematic review and meta-analysis
Authors: He Hao-nan , Xiao Hong , Yao Rui-jie , Liao Shi-jie , Zheng Jun-hang , Zhou Hui-liang
Published: November 2024

Cryptorchidism is a common cause of male infertility, often necessitating microdissection testicular sperm extraction (m-TESE) for sperm retrieval post-surgery. However, uncertainties persist regarding m-TESE outcomes and influencing factors following cryptorchidism surgery. A systematic review and meta-analysis were conducted to evaluate sperm retrieval rates (SRR) among patients undergoing m-TESE after cryptorchidism surgery. Factors including age at orchidopexy, age at m-TESE, type of cryptorchidism, serum hormone levels, testicular volume, and interval from surgery to m-TESE were analyzed for their impact on SRR.Nine studies encompassing 935 patients were included. The overall SRR was 57% (95% confidence interval [CI] 51% to 63%). Compared to patients with negative sperm retrieval (SR-), patients with positive sperm retrieval (SR+) underwent m-TESE at an older age (1.81 years; 95% CI 1.17 to 2.45) and orchidopexy at a younger age (-3.35 years; 95% CI -6.34 to -0.36). Different types of cryptorchidism (including high scrotal, inguinal canal, intra-abdominal) significantly influenced SRR (P<0.05). Serum testosterone, follicle-stimulating hormone, luteinizing hormone levels and testicular volume showed no significant correlation with SRR (P>0.05). Furthermore, SR- patients typically experienced shorter intervals from orchidopexy to m-TESE compared to SR+ patients (34.09 months; 95% CI 0.40 to 67.77). Earlier orchidopexy and much later m-TESE procedures, as well as undescended testis closer to the scrotum, increase the likelihood of successful sperm retrieval. Orchidopexy for cryptorchidism should be done as early as possible, whether it is performed before 18 months of age or detected at a much older age. In patients with undetected cryptorchidism and azoospermia after puberty, m-TESE should not be performed immediately after orchidopexy, the optimal interval from orchidopexy to m-TESE still requires further study.
“Ingurunea nolakoa, neurogarapena halakoa”: burmuinetik eratorritako faktore neurotrofikoaren (BDNF) eragina fetu garaitik nerabezaro arte
Authors: Paniego Maialen , Azurmendi Aitziber , Lertxundi Nerea
Published: November 2024

Neurogarapena, haurdunaldiko enbrioi garaitik hasi eta nerabezaro arte luzatzen den aldaketa sekuentzia ordenatu, dinamiko eta egokitzaile bat bezala definitzen da. Denboraldi honetan zehar, garun garapenaren bilakaera, faktore genetikoen eta inguruneko eragin eta esperientzien arteko elkarrekintzan gauzatzen da. Badirudi, haurdunaldia eta haurtzaroa bezalako etapa kritikoetan gertaturiko esperientziek, garunaren egitura eta funtzioa eraldatu dezaketela mekanismo epigenetikoen bidez, eta ondorioz, nahasmenduen zaurgarritasunean inpaktua izango dutela. Inguruneko faktoreekiko sentikorra den eta gainera neurogarapenean funtsezko funtzioa betetzen duen neurotrofiko bat, burmuinetik eratorritako faktore neurotrofikoa (BDNF; brain-derived neurotrophic factor) da. BDNF maila egokiak neurogarapena behar bezala gauzatu dadin beharrezkoak direnez gero, eman daitezkeen aldaketek, garun-gune batzuen ezohiko funtzionamendua sorrarazi dezakete, nahasmendu neuropsikiatrikoen zaurgarritasuna handituz. Lan honek beraz, neurogarapenean eragina duten haurdunaldiko, haurtzaroko eta nerabezaroko faktore ezberdinak identifikatzea eta BDNF-ak inguruneko faktoreen eta neurogarapenaren arteko harremanean duen zeregina azaltzea du helburu.
Kondentsatu dipolar luzanga baten superjariakin-supersolido trantsizioa zeharkatuz
Authors: Alaña Aitor
Published: November 2024

Tranpa luzanga batean harrapaturiko gas kuantiko dipolar batean fase trantsizio kuantikoaikertzen dugu teorikoki, superjariakin eta supersolido faseen artean, orain dela gutxi eginiko esperimentubaten inguruan dugun ezagutza sakontzeko asmoz, G. Biagioni et al. [Phys. Rev. X 12, 021019 (2022)]. Ho-rretarako Gross-Pitaevskii teoria hedatua erabiltzen dugu, fluktuazio kuantikoak kontuan hartzen dituena.Lehendabizi sistemaren oinarrizko egoera bilatzen dugu, esperimentuan erabilitako bi tranpetarako. Ondo-ren, trantsizioan erabilitako arrapalaren abiaduraren efektuak aztertzen ditugu, zeinen bidez sakabanatzeluzera aldatzen diogun gasari. Aldaketa hori dela eta sortzen diren talde-oszilazioak ere azaltzen ditugu, baifase superjariakinean baita supersolidoan. Aurkitu dugu zeharkako konfinamendu sendoek trantsizio jarraibat sortzen dutela (”Quasi-1D” deituriko izaera), konfinamendu ahulek etena sortzen dutelarik (”Quasi-2D” deituriko izaera). Azken horietan norabide azimutaleko eta zeharkako norabideko higidura moduakakoplatzen baitira.
“¿Por qué no te callas?”: los alcances de una frase en el (des)encuentro de dos mundos
Authors: Bolívar Adriana
Published: November 2024

En este artículo se analiza el alcance político de la frase “¿Por qué no te callas?” Divulgada ampliamente en YouTube el 10 de noviembre de 2007, cuando el rey de España la dirigió al presidente de Venezuela en la última reunión de la XVII Cumbre de las Américas celebrada en Santiago de Chile. Desde una perspectiva interaccional (Bolívar, 2001, 2007, 2008), tomando en cuenta rasgos propios del populismo venezolano, sostenemos que, aunque el foco de interés estuvo en la frase del Monarca español, fue el presidente Chávez quien obtuvo la mayor ganancia discursiva porque logró llamar la atención mundial lo cual, como hemos demostrado en otras investigaciones, forma parte de la estrategia comunicacional de la revolución bolivariana que él dirige. El estudio se concentra en dos problemas específicos. En las razones del impacto de la frase en el mundo global a través de Google (Possenti, 2008) y en los pasos estratégicos dados por el presidente venezolano para llamar la atención en la XVII Cumbre. Al igual que en estudios anteriores, tomamos como categoría central la evaluación, porque nos permite explicar los cambios internos en el texto y los cambios en la dinámica social (Bolívar, 2008). Analizamos detalladamente el micro diálogo difundido por YouTube y el diálogo en mayor escala representado en las noticias del día después del evento recogidas en internet y en la prensa local. El análisis llama la atención sobre las transgresiones de los líderes políticos en las relaciones internacionales, y evalúa los efectos para la polarización en España y Venezuela.
Puesta en escena, destinación y contradestinación en el discurso kirchnerista (Argentina, 2003-2007)
Authors: Montero Ana Soledad
Published: November 2024

Todo discurso ofrece una determinada representación de sí mismo, y se organiza como una “escena” (Maingueneau, 1999) en la que se distribuyen diversos roles: el dispositivo enunciativo consiste, así, en la puesta en escena de una serie de personajes y voces que interactúan y dialogan, dando lugar a distintos posicionamientos (Goffman, 1981) del locutor que son de índole pragmática pero también política e ideológica. En el caso del discurso político, esta escena enunciativa constituye una dimensión fundamental para comprender los sentidos que allí se despliegan y, más importante aún, para estudiar el modo en que en ese discurso se configuran las identidades políticas. En ese marco, en este trabajo proponemos analizar la escena discursiva kirchnerista, que abordaremos integrando los enfoques de las teorías francesas de la enunciación, la teoría de la polifonía enunciativa (Ducrot, 1984) y los aportes de Verón (1987) y García Negroni (1988) en relación con los tipos de destinatarios. En particular, examinamos, en un corpus de discursos presidenciales (entre 2003 y 2007), la configuración enunciativa de los distintos destinatarios del discurso kirchnerista (DK): los adherentes, los indecisos y los adversarios políticos. El análisis de esta escena enunciativa nos proporcionará algunas pistas para examinar el modo en que allí se construye discursivamente la identidad política kirchnerista y, en consecuencia, el vínculo representativo.
Ben Rampton, Language in Late Modernity. Cambridge University Press, 2006, pp.xviii; p. 443
Authors: De Fina Anna
Published: November 2024

Ben Rampton, Language in Late Modernity. Cambridge University Press, 2006, pp.xviii; p. 443.
Luis Cortés Rodríguez. Comentario pragmático de comunicación oral. I. Un discurso parlamentario. Madrid: Arco/Libros, 2008. 71 p. ISBN 978-84-7635-746-0; Luis Cortés Rodríguez. Comentario pragmático de comunicación oral. II. Dos entrevistas informativas.
Authors: Mancera Rueda Ana
Published: November 2024

Luis Cortés Rodríguez. Comentario pragmático de comunicación oral. I. Un discurso parlamentario. Madrid: Arco/Libros, 2008. 71 p. ISBN 978-84-7635-746-0; Luis Cortés Rodríguez. Comentario pragmático de comunicación oral. II. Dos entrevistas informativas. Madrid: Arco/Libros, 2009. 76 p. ISBN 978-84-7635-768-2.
Gênero e discurso no Brasil
Authors: Magalhães Izabel
Published: November 2024

O presente artigo examina discursos históricos de gênero no Brasil, para a adequada compreensão de um contexto sociocultural específico, à luz do debate sobre gênero e linguagem. Dois discursos de gênero são propostos: o discurso tradicional e o emancipatório. Além disso, o artigo tem o objetivo de definir identidades femininas construídas por esses discursos. Adotando-se uma posição contrária à de Pierre Bourdieu (1999) em relação à concepção do feminino, é problematizada a oposição entre feminino e masculino. As identidades são representações discursivas construídas nas práticas sociais. Nas práticas de gênero, elas estão em processo de transformação. Analisando dados de várias pesquisas, e seguindo a tradição da análise de discurso textualmente orientada (Adto), o estudo apresenta os seguintes resultados: além das identidades tradicionais (maternas, vítimas de violência), são definidas identidades emancipatórias e metamorfoseadas (profissionais, rebeldes). Historicamente, as identidades emancipatórias e metamorfoseadas estão vinculadas ao discurso emancipatório. Isso significa que o discurso constrói diferenças, como também indeterminações. As transformações nos discursos de gênero resultam de transgressões às identidades tradicionais.
Modalidad, evaluación e identidad en el chat
Authors: Noblia María Valentina
Published: November 2024

Con las nuevas tecnologías han surgido nuevos espacios de interacción social y, con ellos, nuevos géneros discursivos que proponen cambios en el uso del lenguaje. Con la aparición del chat como conversación que se realiza en tiempo real, entre personas que comparten un espacio de interacción (el de la pantalla de una computadora) pero no un espacio físico, y lo hacen a través de una computadora (por Internet), por escrito y en sincronía, se producen cambios importantes en el plano de la relación interpersonal. Estos cambios restringen y a la vez posibilitan modos particulares en que los participantes marcan y negocian sus posiciones, resuelven los malentendidos y definen interactivamente roles y facetas de su identidad en el marco del diálogo. En este artículo nos proponemos presentar algunos de los modos en que los participantes del chat orientan evaluativamente sus intervenciones, pautando su interpretación y, a la vez, definiendo y negociando roles e identidades en la interacción a partir de recursos que le proveen los distintos medios con los que cuentan: el medio electrónico (Internet), la computadora (la pantalla, el teclado, el hardware y el software) y la escritura. Este trabajo se inscribe en el marco teórico-metodológico del Análisis Crítico del Discurso (Fairclough, 2003; van Dijk, 2003) que retoma los aportes de la Lingüística Sistémico Funcional (Halliday, 2004; Martin y White, 2005; Eggins y Slade, 2005) y del Análisis de la Conversación desde una perspectiva interaccional (Goodwin, 1995; Carranza, 1997; Coulthard, 1992). El corpus seleccionado está compuesto por 20 casos de chat, grupales y de persona a persona. Los programas en los que se llevaron a cabo las conversaciones son el Messenger y el ICQ. Los grupales fueron relevados en los canales de UOL, Ciudad y Terra, durante los años 2001 y 2002.
Una actuación política contra la opinión de la ciudadanía: El último discurso de Aznar en el Parlamento español justificando la guerra de Irak (diciembre de 2003)
Authors: Pujante David , Morales López Esperanza
Published: November 2024

Este trabajo analiza el último discurso del Presidente del Gobierno José María Aznar en el Parlamento español sobre la participación española en la guerra de Irak, el 2 de diciembre de 2003. En él justifica discursivamente las razones que le llevaron a apoyar la decisión de la administración americana de iniciar dicha guerra. De los pronunciados por Aznar sobre este tema, este discurso es el más rico en simbolismo ya que se produce cuando la guerra ha acabado y se empiezan a desmontar las razones que la justificaron, pero sobre todo porque se lleva a cabo unas horas después del funeral por siete agentes de nuestro servicio nacional de inteligencia, asesinados en una emboscada en Irak. La teoría y la metodología que guía nuestro análisis es una aproximación de carácter ecléctico, basada en disciplinas como Análisis Crítico del Discurso, Sociolingüística Interaccional y Retórica (principalmente, teoría de la argumentación), entre otras; avanzando cada vez más hacia la transdisciplinariedad, que consideramos de gran rendimiento analítico. El análisis revela que Aznar construye tres significados, para su marco ideológico, que buscan justificar sus posiciones al respecto; algo que le es muy necesario, dada la situación socio-política del momento: 1) El terrorismo es una amenaza mundial en este momento y el terrorismo de ETA es un ejemplo más. 2) La misión de nuestras tropas en Irak es parte de una misión universal, liderada por Naciones Unidas. 3) El gobierno liderado por el Partido Popular es el que mejor conoce nuestro destino como nación y nos conducirá a él como imperativo ineludible (el retorno al nacionalismo español).
Pityraisis Licheniodes after cOVID-19 vaccination
Authors: Singh Maneesh
Published: November 2024

•The importance of this case lies in the possible link between the COVID-19 vaccine and Pityriasis lichenoides et varioliformis acuta (PLEVA). Prior to his COVID-19 vaccine, the patient had never had an outbreak of PLEVA. Therefore, PLEVA could be considered as a possible reaction to the COVID-19 vaccination.

•PLEVA mimics many common diseases and can be misdiagnosed. This can lead to a great deal of emotional and psychological distress for the patient and his family members due to lack of symptom resolution.

•In this case, the patient was diagnosed with scabies. He had his apartment fumigated multiple times and was using permethrin cream with no relief of his symptoms. In addition to this the cost of fumigating the apartment as well as multiple visits to urgent care caused a great deal of financial stress. Therefore, it is important to correctly diagnosis the disease to avoid emotional and financial stress to the patient.
Electrodynamics of Circuits
Authors: Eisenberg Robert
Published: November 2024

Currents in circuits course by the billions through our technology. Kirchhoff’s current laws are not found in the index of some widely used textbooks of electrodynamics, and so are not emphasized in courses using those texts. Electrodynamics and circuit theory could benefit if Kirchhoff’s current law and circuit theory are included in texts and taught to students of electrodynamics. Maxwell advocated another approach to current laws that includes displacement current
explicitly whenever current is computed. Computer packages like LT-Spice could follow Maxwell’s approach, thereby increasing the realism of their results, although not to perfection: details of layout and device properties are needed as well. This paper shows how circuit analysis grows from Maxwell’s electrodynamics using the classical Kirchhoff current law.
As-Deposited BaCuSe Thin Film - Morphology and Optical Properties
Authors: Ademola Agbolade Desmond
Published: November 2024

Barium Copper Selenide (BaCuSe) thin films were synthesized using a chemical bath deposition technique. The morphology and optical properties of these films were analyzed. Scanning Electron Microscopy (SEM) revealed that the BaCuSe films consist of smooth grains with varying sizes (400 μm to 1 mm), indicating an irregular growth rate. The transmittance spectra showed that the as-deposited BaCuSe films are transparent across the entire visible and near-infrared regions of the electromagnetic spectrum. Reflectance analysis indicated that the BaCuSe films have 0.0% reflectance in the ultraviolet region (around 175 nm), which gradually increases to 15% in the near-infrared region (950 nm). These films act as ultraviolet (UV) absorbers and visible to near-infrared (Vis-NIR) transmitters, making them suitable candidates for tandem photovoltaic cell configurations. The BaCuSe films exhibited direct and indirect bandgap energies of 1.65 eV and 0.72 eV, respectively. The refractive index analysis showed higher propagation velocities for incident photon energy in the visible to near-infrared regions compared to the ultraviolet region. The films also displayed a non-zero extinction coefficient, leading to exponential wave decay within the material. The complex dielectric constant analysis indicated weak absorption in the Vis-NIR spectrum, while optical conductivity revealed strong photonic effects between 3.5 eV and 4.05 eV. BaCuSe thin films have several promising practical applications, particularly in the fields of optoelectronics, photovoltaics, protective coating and transparent conductive layers.
Chord language
Authors: LI Xiaohong
Published: November 2024

Chord is a physical language, its encoding and semantic forms are quantized spectrum, strings (open, closed, membrane), chord mathematics, etc., expressing time (music), space (painting), life (meridians), etc., distributed as chord fields.

Chord expression, unifying space-time, life, spirit, etc., the universe is based on chords.
Tingkat Sensitivitas Ekosistem Terumbu Karang oleh Buangan Limbah Tambak Udang (Litopenaeus vannamei) di Pesisir Pantai Legon Boyo, Karimunjawa
Authors: Nugroho David , Afiati Norma , Purnomo Pujiono Wahyu , Ayuningrum Diah , Jati Oktavianto Eko
Published: November 2024

Ekosistem karang dan pesisir Pulau Karimunjawa berpotensi terdampak akibat buangan limbah budidaya udang (Litopenaeus vannamei). Setidaknya telah tercatat sejak 2017 hingga Maret 2023 terdapat 33 titik lokasi, terdiri dari 238 petak tambak dengan total luasan sekitar 42 hektare. Penelitian ini bertujuan menghitung tingkat sensitivitas terumbu karang dan mengidentifikasi dampak yang ditimbulkan oleh kegiatan budidaya tambak udang terhadap ekosistem karang di Pantai Legon Boyo, Kepulauan Karimunjawa. Penelitian ini menggunakan metode eksploratif meliputi: teknik pengumpulan data karang menggunakan metode underwater photo transect (UPT), teknik purposive sampling untuk pengumpulan data kualitas perairan dan teknik pengolahan data citra satelit. Data yang digunakan dalam penelitian ini adalah data primer dan sekunder. Data primer yang dimaksud adalah data ekosistem terumbu karang dan kualitas perairan di lokasi penelitian. Data sekunder meliputi status perlindungan kawasan, kelimpahan ikan dan data kualitas perairan. Sumber data sekunder diperoleh dari hasil penelitian terdahulu yang sesuai dengan topik bahasan dalam penelitian serta publikasi dari instansi terkait. Parameter dalam memperkirakan tingkat sensitivitas karang (S) antara lain: persentase tutupan, tipe pertumbuhan terumbu karang, kerapatan karang, kelandaian, status perlindungan, keberadaan spesies dilindungi dan kelimpahan ikan. Pengolahan data terumbu karang menggunakan software CPCe. Hasil perhitungan tingkat sensitivitas karang sebesar 3,14 yang mengindikasikan status sensitivitas tingkat sedang serta dampak kegiatan limbah buangan budidaya belum berdampak langsung terhadap ekosistem terumbu karang.
Formative assessment of group work skills: An analytics-enabled conceptual framework
Authors: Arthars Natasha , Thompson Kate , Huijser Henk , Kickbusch Steven , Cunningham Samuel , Winter Gavin , Cook Roger , Lockyer Lori
Published: November 2024

Assessing group work formatively in higher education poses a significant challenge. The complexity of evaluating individual contributions is compounded by the lack of efficient and effective methods for tracking, analysing and assessing individual engagement and contributions, which can impede timely feedback and the development of group work skills. This paper contributes to the growing body of research on collaboration analytics, which focuses on learning analytics (LA) in collaborative settings, and formative assessment while providing practical guidance for educators seeking to enhance formative assessment practices. The potential enhancement lies at the intersection between analytics technology and assessment design. In this paper, we present a conceptual framework that can harness multimodal data collection as well as LA to formatively assess and provide feedback on individual engagement and contributions to group work across physical and digital spaces. Drawing on research that considers design for learning, conjecture mapping, assessment design, multimodal LA and feedback, we outline a structured approach to developing formative assessment of group work skills in collaborative projects and higher education contexts.
 
Implications for practice or policy:

Practical guidance is provided for educators to enhance formative assessment practices with LA.
The integrated framework and process offers a guide for formative assessment in group work scenarios, providing tools for monitoring student progress, informing pedagogical decision-making and enhancing learning experiences.
The integration of the activity-centred analysis and design framework and LA allows educators to harness the power of both data-driven decision-making and learner-centred pedagogical approaches to better support learner development in group work settings.
Petrov-Galerkin method for small deflections in fourth-order beam equations in civil engineering
Authors: Youssri Youssri Hassan , Atta Ahmed Gamal , Abu Waar Ziad Yousef , Moustafa Mohamed Orabi
Published: November 2024

This study explores the Petrov–Galerkin method’s application in solving a linear fourth-order ordinary beam equation of the form

u

″
″

+
q
u
=
f

u^{\prime\prime} ^{\prime\prime} +qu=f

. The equation entails two distinct boundary conditions: pinned–pinned conditions on

u

u

and

u
′

u^{\prime}

, and clamped–clamped conditions on

u

u

and

u

″

{u}^{^{\prime\prime} }

. To satisfy these boundary conditions, we have built two sets of basis functions. The explicit forms of all spectral matrices were reported. The nonhomogeneous boundary conditions were easily handled using perfect transformations, ensuring the numerical solution’s accuracy. Detailed analysis of the method’s convergence was studied. Some numerical examples were presented, accompanied by comparisons with other existing methods in the literature.
Evidence of Middle Palaeolithic human occupation in south-central Oman
Authors: Chlachula Dominik , Hilbert Yamandú H. , Garba Roman , Parton Ash , Arnold Lee , Alsop David , Duval Mathieu , Meredith-Williams Matthew
Published: November 2024

Debate surrounds the early peopling of the Arabian Peninsula. The first evidence of the Levallois lithic technology in the Huqf area of south-eastern Arabia now extends the Middle Palaeolithic record of hominin activity into central Oman and helps to diversify the picture of Arabian prehistory.
YOĞURT SUYU KULLANIMININ YAĞSIZ AYRANIN BAZI ÖZELLİKLERİ ÜZERİNE ETKİSİ
Authors: Kanca Nazlı
Published: November 2024

Bu çalışmada, süzme yoğurt üretiminden elde edilen yoğurt suyu (YS), ayran üretiminde, sütün seyreltilmesinde kullanılan içme suyunun %0, %6, %12.5 ve %25’i yerine ilave edilmiş ve ayranların 14 günlük depolama süresince bazı özellikleri incelenmiştir. YS ilavesi ile örneklerin toplam kurumadde içerikleri ve titrasyon asitliği değerleri artmış, yağ, protein, kül içerikleri ve pH değerleri ise değişmemiştir. YS’nin kıvam indeksi değerlerini artırdığı, serum ayrılması değerlerini ise azalttığı belirlenmiştir. Renk özelliklerinden a* değeri, YS ilavesi ile azalmış, L* ve b* değerlerinde ise farklılık görülmemiştir. Örneklerin tamamının depolama süresince 107 kob/ml’nin üzerinde laktik asit bakteri içeriğine sahip olduğu belirlenmiştir. Duyusal analiz sonuçlarına göre, ayranlar arasında görünüş, renk ve koku özellikleri bakımından farklılık görülmemiş, kıvam ve tat özellikleri bakımından ise en yüksek puanları en yüksek YS içeriğine sahip örnek almıştır. Çalışmadan elde edilen sonuçlar, ayran üretiminde YS kullanımının uygun olduğunu göstermiştir.
Musical Preferences and Personality Traits
Authors: Rossi Chiara , Colombo Barbara , De Salve Francesca , Oasi Osmano
Published: November 2024

Music resonates differently in every single person according to human culture and characteristics. Individual differences such as personality traits may play a key role in modulating the emotional response to music and yet relatively little is known about the underlying structure of Italian musical preferences. On these bases, the current research presents a replication of the structure of the MUSIC Model and examines its relationships with personality traits. A sample of 2,104 participants completed an online survey. The current study is divided into three parts: 1) an exploratory factor analysis study, 2) a confirmatory factor analysis study to verify the emerged structure, and 3) a structural equation modeling for the investigation of the relationships between music and personality. Findings confirmed a latent five-factor structure that was labeled as follows: 1) Mellow: classical, gospel, opera, and religious; 2) Unpretentious: alternative, bluegrass, and new age; 3) Sophisticated: jazz, blues, soul R&B; 4) Intense: heavy metal, punk, and rock; and 5) Contemporary: dance electronica, world (international), pop, reggae, and rap hip-hop. Overall, findings suggested musical preferences are subject to some personality traits. These results could be considered a promising starting point to generate new theories to use music in therapeutic contexts for enhancing well-being.
Testing Rhythmic Abilities in Developmental Dyslexia
Authors: Rossi Marina , Smit Eline A. , van der Werff Jelle , Ravignani Andrea , Rathcke Tamara
Published: November 2024

Rhythm processing deficits in developmental dyslexia (DD) span across different rhythmic subcomponents and are difficult to capture using one experimental paradigm. How are dyslexic deficits related to motor periodicity, i.e., the execution of repetitive actions while internally generating rhythm? The present experiment investigated rhythm production in DD by means of unprompted tapping paradigm, testing the hypothesis that the ability to internally generate rhythmic patterns may be impaired. The tasks involved tapping of isochronous sequences at a comfortable and a fast tempo and tapping of a free rhythm. Forty adolescents diagnosed with DD (with or without comorbid dyscalculia) participated, along with thirty typically developing control participants. A background questionnaire gathered information about participants’ prior music training. The data show that both dyslexic groups tapped faster than the typically developing participants at the comfortable tempo. We found no statistical differences between groups in fast isochronous tapping or in the free rhythm production tasks, irrespective of music training or the presence of dyscalculia. All participants favored regular rhythms when tapping a free rhythm, with a notable preference for isochrony. These results have theoretical and clinical implications for rhythm deficit hypotheses of DD.
Cultural Accounts of Consonance Perception. A Lakatosian Approach to Save Pythagoras
Authors: Di Stefano Nicola
Published: November 2024

In 1945, Norman Cazden published a groundbreaking article in the literature on consonance perception. In this seminal work, Cazden combined historical, musicological, and theoretical arguments to assert that the Pythagorean approach to consonance, based on integer ratios, lacked substantiation. Recent empirical evidence has bolstered Cazden’s perspective, indicating that the perception of consonance is primarily shaped by culture rather than by arithmetical ratios. Nevertheless, some scholars have drawn attention to other evidence from the bio-musicological literature that supports the Pythagorean hypothesis. Consequently, the current debate on consonance tends to center around the nature vs. culture dichotomy. In this paper, I endeavor to demonstrate that many of the “cultural” arguments can coexist with the Pythagorean hypothesis if we adopt a more epistemologically suitable framework, as proposed by Imre Lakatos’s philosophy of science. To achieve this, I conduct an in-depth analysis of Cazden’s arguments, along with examining both historical and contemporary reinterpretations of them. Then, I apply Lakatos’s concept of “research programme” to the case study of consonance, highlighting various research avenues that have drawn inspiration from the Pythagorean hypothesis and have been successfully pursued. I conclude by claiming that the Pythagorean account can be regarded, in Lakatosian terms, as a progressive research programme.
Assessing the impact of mobile phone use on the mental health of schoolchildren
Authors: Kapranov Sergey V. , Kapranova Galina V. , Tarabtsev Denis V. , Tour Egor D.
Published: November 2024

Objective: to assess the impact of mobile phone use on the mental state of adolescents. Material and methods. On voluntary terms, a survey was conducted of 917 students (427 boys and 490 girls) in grades 9-11, aged 15-17 years, attending all 14 secondary schools in the city Alchevsk. The students answered questions about the nature of their use of mobile phones. Self-assessment and assessment of mental states according to Eysenck (anxiety, frustration, aggressiveness and rigidity) were also performed. Results. There were more students with a high level of aggression according in the group of people who made 6 or more calls per day — 12.0±2.4%, compared with adolescents who made less than 3 such calls — 5.4±1.8% (p=0.013) and 3-5 calls —6.2±1.3% (p=0.029). Similar differences in the group of adolescent girls were 18.4±3.8%, compared with 5.6±1.7% (p=0.003) and 7.2±1.8% (p=0.009). There were more schoolchildren with a high level of aggression according in the group of teenagers who talked on the phone for an average of more than 10 min a day— 11.7±2.0%, compared with their peers who talked for 3-10 min — 5.4±1.1% (p=0.007), and also less than 3 min — 5.1±1.4% (p=0.008). Conclusion. With an increase in the number of outgoing calls, incoming calls, as well as the duration of conversations on mobile phones, the level of aggression among schoolchildren increases. To the greatest extent, this pattern is typical for teenage girls, which can be explained by the longer duration of mobile phone use by girls.