Miracle-dz/UniFAR-FTUs huggingface dataset:
El desarrollo profesional del profesorado: ampliando miradas, decisiones y prácticas coherentes

El Ministerio de Educación y Formación Profesional (MEFP, 2022) ha publicado y sometido a discusión un Documento que analiza el estado de la cuestión del profesorado y su formación, y formula determinadas propuestas de mejora. Este artículo, referido específicamente al desarrollo profesional docente (DPD), es aportación al debate, agradeciendo a esta Revista la oportunidad de manifestarla. Mi elección obedece a dos razones más importantes. Una, la etapa del ejercicio de la profesión, extendida por varias décadas, es posiblemente la más decisiva en el aprendizaje y la formación continuada mientras se ejerce la docencia y, de ese modo, la más influyente (de la escuela) en la experiencia y el aprendizaje del alumnado, así como muy relevante para los centros, el sistema en conjunto y la sociedad. Dos, porque de un tiempo a esta parte el DPD se ha tornado invisible, casi desaparecido y fuera de foco pese al reconocimiento generalizado de su importancia. Prueba de ello es el trato insuficiente e inadecuado propuesto por el Documento y la escasa atención en ciertas reacciones al mismo. En el primer apartado del artículo se hace una lectura de la propuesta oficial, en concreto de lo que dice y propone sobre desarrollo profesional docente (DPD). Se cuestiona el halo gerencial prevalente, un cierto descuido terminológico e imprecisiones conceptuales difíciles de entender y, asimismo, el recurso a avales referidos exclusivamente a organismos externos, marginando nuestra propia realidad, conocimientos y experiencia acumulada. En el segundo se propone una caracterización del aprendizaje y el DPD con miradas amplias, subrayando diversos significados e implicaciones. En el tercero se esbozan dimensiones relevantes de la formación –propósitos y referentes, contenidos, procesos y políticas, condiciones y servicios necesarios.
Burnout and Depressive Symptoms in Healthcare Professionals: A Cross-Sectional Study in Saudi Arabia

Objectives. The study objectives were to examine the prevalence of burnout among healthcare professionals, analyze the association of depression and burnout among healthcare professionals, and explore the factors related to burnout. Methods. A prospective cross-sectional study using a validated questionnaire was conducted among healthcare professionals in a tertiary teaching hospital in Saudi Arabia’s central region. The Maslach Burnout Inventory (MBI) questionnaire was used to measure burnout through emotional exhaustion, depersonalization, and personal accomplishment. Descriptive and inferential statistics were carried out using SAS version 9.4. Results. The study sample was composed of 139 healthcare professionals. Around 48% of the study sample were nurses, 26% were physicians, 19% were pharmacists, and 6% were other healthcare professionals. About 61% screened positive for depression. Overall, one third of the participants had a high risk of burnout. Around 61.8% of the participants were in the high-risk group of the EE, 58.3% of the DP, and 41.0% of the PA subscales. Scores for the overall MBI were significantly different between various age groups, gender, those with social and financial responsibility, income, job titles, or years of experience. A higher risk of burnout in all subscales was observed among those with depression. Conclusions. A high risk of burnout was observed among healthcare professionals. The level of burnout was connected to workplace factors and the presence of depression. The burnout suffering among these healthcare professionals underlines the need to study further how to reduce the factors that contribute to burnout and the impact of interventions to reduce healthcare professionals’ burnout levels. The burnout scientific literature would benefit from further high-quality research with larger samples using longitudinal study designs to identify the causal risk factors.
A particle‐in‐cell sea‐ice model

Abstract Fronts or discontinuities in geophysical flows are often smoothed in numerical models owing to artificial diffusion and dispersion introduced by the advection algorithm. This is a particular problem in operational sea‐ice forecasting where the position of the ice edge must be accurately predicted. The particle‐in‐cell (PIC) scheme avoids artificial smoothing by partitioning the ice volume into individual particles whose motion is integrated in a Lagrangian sense. The velocity field is obtained by solving the momentum equation on an underlying fixed Eulerian grid. Comparisons between the PIC scheme and more conventional advection algorithms are presented using both idealized and observed forcing fields. An advantage of the PIC model is that the resolution of the underlying Eulerian grid (on which the computationally expensive momentum equation is solved) can be chosen to represent the spatial variability of the forcing fields (winds and currents) rather than to minimize advection errors. A large n.
EPH/Ephrin-Targeting Treatment in Breast Cancer: A New Chapter in Breast Cancer Therapy

Breast cancer (BC) is the most common malignant tumor in women. Erythropoietin-producing hepatocellular receptors (EPHs), receptor tyrosine kinases binding the membrane-bound proteins ephrins, are differentially expressed in BC, and correlate with carcinogenesis and tumor progression. With a view to examining available therapeutics targeting the EPH/ephrin system in BC, a literature review was conducted, using the MEDLINE, LIVIVO, and Google Scholar databases. EPHA2 is the most studied EPH/ephrin target in BC treatment. The targeting of EPHA2, EPHA10, EPHB4, ephrin-A2, ephrin-A4, as well as ephrin-B2 in BC cells or xenograft models is associated with apoptosis induction, tumor regression, anticancer immune response activation, and impaired cell motility. In conclusion, EPHs/ephrins seem to represent promising future treatment targets in BC.
Aspergillus fumigatus: análisis microscópico de su estructura en un modelo de biofilm in vitro

La enfermedad asociada al biofilm está siendo evaluada con profundidad en diferentes campos de la Microbiología Clínica, en tanto que representa un importante problema de salud pública. La formación de biofilms constituye un modo de crecimiento que hace que las células que lo forman sean menos susceptibles a los antimicrobianos y a la acción del sistema inmune del huésped y, permite que los patógenos sobrevivan en entornos hostiles, se dispersen y colonicen nuevos nichos no previstos. En lo relativo a la infección fúngica de gravedad, aún hoy constituye un gran reto para la salud pública por su elevada morbi-mortalidad a pesar de los avances en diagnóstico y estrategias de tratamiento. Para avanzar en el conocimiento de los procesos que motivan la invasión fúngica, los modelos in vitro de biofilm constituyen una herramienta interesante para hallar respuestas que puedan trasladarse y aplicarse en la práctica clínica. En el laboratorio de Referencia e Investigación en Micología, del CNM-ISCIII mantenemos una línea de investigación, utilizando un modelo de biofilm de Aspergillus fumigatus, y cepas de diferentes orígenes y fondos genéticos, que nos ayudarán a desarrollar herramientas complementarias para establecer nuevos test diagnósticos y estrategias de tratamiento, así como relacionar resistencia con la capacidad de formar biofilms y con la patogenia y virulencia del hongo. En este estudio se analiza fenotípicamente esta estructura mediante técnicas de imagen basadas en microscopia de fluorescencia con marcajes específicos para evaluar la arquitectura del biofilm intraespecie y el efecto de factores que puedan alterar su desarrollo e integridad.
Multiferroic behavior observed in highly orientated Mn-doped BaTiO3 thin films

Highly orientated Mn-doped BaTiO3 thin films have been prepared on Nb-doped SrTiO3 substrate by pulsed laser deposition. Structural and electrical studies indicate that pure and Mn-doped BaTiO3 thin films show single phase character and good ferroelectric performance. All of the Mn-doped BaTiO3 thin films show obvious room-temperature ferromagnetism and the magnetization increases with the growing concentration of doped Mn. A bound magnetic polaron model was proposed to understand the observed ferromagnetic behavior of resistive Mn-doped BaTiO3 thin films. Our results demonstrate that ferromagnetism can be induced in the ferroelectric BaTiO3 film, which makes it a promising single-phase multiferroic.
Optical and photovoltaic properties of indium selenide thin films prepared by van der Waals epitaxy

Indium selenide thin films have been grown on p-type gallium selenide single crystal substrates by van der Waals epitaxy. The use of two crucibles in the growth process has resulted in indium selenide films with physical properties closer to these of bulk indium selenide than those prepared by other techniques. The optical properties of the films have been studied by electroabsorption measurements. The band gap and its temperature dependence are very close to those of indium selenide single crystals. The width of the fundamental transition, even if larger than that of the pure single crystal material, decreases monotonously with temperature. Exciton peaks are not observed even at low temperature, which reveals that these layers still contain a large defect concentration. The current–voltage characteristic of indium selenide thin film devices was measured under simulated AM2 conditions. The solar conversion efficiency of these devices is lower than 0.6%. The high concentration of defects reduces the diffusion length of minority carriers down to values round to 0.2 μm.
Tropical Atlantic Sea Surface Temperatures and Rainfall Variations in Subsaharan Africa

Abstract The most important patterns of normalized sea surface temperature (SST) departures in the tropical Atlantic are identified using principal component analysis. The first three eigenvectors of separate monthly and seasonal analyses over the period 1948 to 1972 produce similar patterns of SST variation. In addition, the first three monthly eigenvectors are shown to occur with equal frequency during the earlier part of this century from 1911 to 1939. The second eigenvectors of monthly and seasonal SST departures are significantly correlated with normalized sea level pressure (SLP) departures (also specified using principal component analysis) over the period 1948 to 1972. On monthly time scales, the strongest relationship is found with the SLP field leading the SST field by one month. The second SST eigenvectors are also shown to be significantly correlated with Sahel rainfall variations over the period 1948 to 1972. The SST-rainfall relationship for this recent period appears to be different from th.
Przyczynowość cen na rynku nieruchomości w Polsce

W artykule poddano analizie ekonometrycznej zmienne ilościowe związane z rynkiem nieruchomości w Polsce. Autor rozpatruje zależności występujące na rynku mieszkaniowym wykorzystując test przyczynowości w sensie Grangera. Rezultatem przeprowadzonej analizy jest określenie zależności pomiędzy cenami na rynku nieruchomości i stanem koniunktury gospodarczej oraz zdolnością kredytową nabywców. Wyniki badań wzbogacono wnioskami wynikającymi z obserwacji zmian zachodzących na polskim rynku obrotu nieruchomościami oraz w zakresie zmieniających się średnich wynagrodzeń brutto na przestrzeni dekady
Variability of Human rDNA and Transcription Activity of the Ribosomal Genes

Human ribosomal DNA is represented by hundreds of repeats in each cell. Every repeat consists of two parts: a 13 kb long 47S DNA with genes encoding 18S, 5.8S, and 28S RNAs of ribosomal particles, and a 30 kb long intergenic spacer (IGS). Remarkably, transcription does not take place in all the repeats. The transcriptionally silent genes are characterized by the epigenetic marks of the inactive chromatin, including DNA hypermethylation of the promoter and adjacent areas. However, it is still unknown what causes the differentiation of the genes into active and silent. In this study, we examine whether this differentiation is related to the nucleotide sequence of IGS. We isolated ribosomal DNA from the nucleoli of human-derived HT1080 cells, and separated methylated and non-methylated DNA by chromatin immunoprecipitation. Then, we used PCR to amplify a 2 kb long region upstream of the transcription start and sequenced the product. We found that six SNVs and a series of short deletions in a region of simple repeats correlated with the DNA methylation status. These data indicate that variability of IGS sequence may initiate silencing of the ribosomal genes. Our study also suggests a number of pathways to this silencing that involve micro-RNAs and/or non-canonical DNA structures.
Some decomposition formulae for M/M/r/r+d queues with constant retrial rate

The M/M/r/r-d queue with constant retrial rate has many important applications in teletraffic theory and computer and communication networks. An analytical solution of this queue is difficult and would not necessarily lend itself to numerical implementation in the case r+≥ 3. In this paper, we extend the decomposition formulae for the stationary distributions of the standard M/M/r/r+d queue to the M/M/r/r+d queue with constant retrial rate. In the case r+< 3, we show that the stationary distributions of the number of customers in orbit and the total number of servers and waiting positions occupied can be expressed as mixtures of two random variables weighted by the probability of entering the orbit. In the case r+≥ 3, we propose and heuristically explore decomposition formulae for the stationary distribution of the number of customers in orbit
A Back Propagation Neural Network Model with the Synthetic Minority Over-Sampling Technique for Construction Company Bankruptcy Prediction

Improving model accuracy is one of the most frequently addressed issues in bankruptcy prediction. Several previous studies employed artificial neural networks (ANNs) to enhancethe accuracy at which construction company bankruptcy can be predicted. However, most of these studies use the sample-matching technique and available company quarters or company years in the dataset, resulting in sample selection biases and between-class imbalances. This study integrates a back propagation neural network (BPNN) withthe synthetic minority over-sampling technique (SMOTE) and the use of all of the available company-year samples during the sample period to enhancethe accuracy at which bankruptcy in construction companies can be predicted. In addition to eliminating sample selection biases during the sample matching and between-class imbalance, these methods also achieve the high accuracy rates. Furthermore, the approach used in this study shows optimal over-sampling times, neurons of the hidden layer, and learning rate,all of which are major parameters in the BPNN and SMOTE-BPNN models. The traditional BPNN model isbroughtas a benchmark for evaluating the predictive abilities of the SMOTE-BPNN model. The experientialresults of this paper indicatethat the SMOTE-BPNN model outperforms the traditional BPNN.
Institutional Investor Attention, Agency Conflicts, and the Cost of Debt

Using a new measure of shareholder inattention constructed from exogenous industry shocks to institutional investor portfolios, we find that firms with distracted shareholders are associated with a higher cost of debt. This effect is stronger for firms with more powerful CEOs, firms with higher information asymmetry, and those operating in less competitive product markets. Further testing suggests that the inattention-cost of debt relation is driven primarily by dual holders directly observing shareholder distraction. Our results are robust to controlling for inattention at the retail investor level and to other external monitors, including credit rating agencies, financial analysts, and Big 4 auditors. Overall, our evidence suggests that institutional shareholder inattention has an incrementally negative effect on bond pricing. This paper was accepted by Brian Bushee, accounting. Supplemental Material: The data files and online appendix are available at https://doi.org/10.1287/mnsc.2022. 4593.
Robust guaranteed cost control for uncertain linear time-delay systems

This paper is concerned with robust guaranteed cost control for uncertain linear time-delay systems with quadratically constrained uncertainty using a linear matrix inequality (LMI) approach. The quadratically constrained uncertainty described in this paper is general in nature and takes some well-known uncertainty descriptions as special cases. Two specific problems are considered in this paper, namely the robust guaranteed cost control problem using memoryless static state feedback and the one using memoryless static output feedback. We show that feasibility of some LMIs guarantees the solvability of the corresponding robust guaranteed cost control problem.
Association of Mastitis and Farm Management with Contamination of Antibiotics in Bulk Tank Milk in Southwest, China

Simple Summary Antibiotic contamination of animal food sources is an important public health problem between animals and humans; milk is an important source of protein for people and one of the foods with antibiotic residues. Antibiotics residues in milk often come from antibiotic treatment of cow mastitis. Through a questionnaire survey study, we found that farmers on most smallholder farms have poor awareness of stewardship and disease management. Some farmers cannot accurately answer the types and usage of antibiotics. Our study also showed that there was a big gap in management between large and smallholder farms in Southwest China, which is the main reason for the prevalence of mastitis in dairy cows and the antibiotic residue rate in bulk tank milk. Our results suggest that dairy farmers need to improve their knowledge of dairy cow diseases and antibiotic use; for non-professional farmers, we recommend listening to the treatment options provided by a professional veterinarian. Abstract Bovine mastitis could reduce the milk production and the quality of the bulk tank milk (BTM). Antibiotic treatments through intramammary or parenteral methods are being widely used in dairy farms. A cross-sectional study to investigate for general farm management and pre-test the questionnaire was performed in Southwestern Yunnan province, China. A total of 134 dairy farms were included. Milking cows of each farm were determined for the presence of clinical (CM) and sub-clinical (SCM) mastitis using the California Mastitis Test (CMT). Rates of CM and SCM in studied farms ranged from 2–11%, and 24–69%, respectively. The incidence of antibiotic residues in BTM of all farms was very high (32%, 44/134). All antibiotic contaminated samples were from smallholder dairy farms. Factors significantly associated with the presence of antibiotic contamination included farm region, antibiotics usage, persons performing mastitis treatment, and rates of CM. Rates of CM were significantly associated with the farm region, cleanliness of udders before milking, and the number of milking cows. Our results emphasize that the risk factors of dairy farm management should be paid attention, which can reduce mastitis prevalence and antibiotic contamination in BTM in Southwestern China.
Theoretical study of PTCDA adsorbed on the coinage metal surfaces, Ag(111), Au(111) and Cu(111)

A thorough understanding of the adsorption of molecules on metallic surfaces is a crucial prerequisite for the development and improvement of functionalized materials. A prominent representative within the class of π-conjugated molecules is 3,4,9,10-perylene-tetracarboxylic acid dianhydride (PTCDA) which, adsorbed on the Ag(111), Au(111) or Cu(111) surfaces, shows characteristic trends for work-function modification, alignment of molecular levels with the substrate Fermi energy and binding distances. We carried out density functional theory (DFT) calculations to investigate to what extent these trends can be rationalized on a theoretical basis. We used different density functionals (DF) including a fully non-local van der Waals (vdW) DF capable of describing dispersion interactions. We show that, rather independent of the DF, the calculations yield level alignments and work-function modifications consistent with ultra-violet photoelectron spectroscopy when the monolayer is placed onto the surfaces at the experimental distances (as determined from x-ray standing wave experiments). The lowest unoccupied molecular orbital is occupied on the Ag and Cu surfaces, whereas it remains unoccupied on the Au surface. Simultaneously, the work function increases for Ag but decreases for Cu and Au. Adsorption distances and energies, on the other hand, depend very sensitively on the choice of the DF. While calculations in the local density approximation bind the monolayer consistently with the experimental trends, the generalized gradient approximation in several flavors fails to reproduce realistic distances and energies. Calculations employing the vdW-DF reveal that substantial bonding contributions arise from dispersive interactions. They yield reasonable binding energies but larger binding distances than the experiments.
Edge-driven color constancy

Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva. nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible.
Secrecy Analysis of DCSK-Based PLC Systems With Multiple Eavesdroppers

In the past two decades, chaotic modulation schemes have drawn much attention for their significant advantages over other traditional modulation techniques. One of the noticeable advantages is the capability of providing secure communication in the presence of an eavesdropper. In this article, we study the physical layer security (PLS) performance of low-frequency power line communication (PLC) systems against multiple eavesdroppers by employing differential chaos shift keying based modulation technique. A wiretap power line channel model is investigated by considering two different cases: 1) when all the channels are assumed to be independent and identically distributed (IID) following Log-normal distribution; and 2) the wiretap channels are considered to be identical but correlated Log-normally distributed and independent of the main channel. Contemporaneously, the Bernoulli-Gaussian random process models the PLC noise. Further, a comprehensive PLS study of the considered PLC system is characterized in terms of the average secrecy capacity, secure outage probability, and strictly positive secrecy capacity. We also propose an algorithm to maximize the secrecy throughput under security and reliability constraints. Moreover, to obtain essential insights, we reveal the impact of various crucial parameters onto the proposed system.