Miracle-dz/UniFAR-FTUs huggingface dataset:
Supervivencia en pacientes con Cáncer de Mama Subtipo Triple Negativo: Experiencia Institucional

Antecedentes: El cáncer de mama con perfil molecular triple negativo es una enfermedad agresiva con mal pronóstico independientemente de su estadío. Dado que la tasa de mortalidad y su riesgo de recaída son altos, la supervivencia global y libre de enfermedad suele ser corta. Método: Estudio observacional, descriptivo y transversal. Se analizó 44 historias clínicas de pacientes tratadas por cáncer de mama triple negativo en el Área de Oncología en el Hospital José Carrasco Arteaga desde el año 2014 al 2018 con un tiempo de seguimiento mínimo de 3 años y máximo de 5 años. Las variables incluidas en el estudio fueron: estadío del tumor, tipo de cirugía, quimioterapia neoadyuvante, quimioterapia adyuvante, agente quimioterapéutico, recaída de la enfermedad, supervivencia libre de enfermedad, mortalidad y supervivencia global. Los datos recolectados fueron tabulados y analizados en SPSS IMB versión 21. Se utilizaron medidas de tendencia central y de dispersión. Se utilizó el método del límite del producto de Kaplan-Meier. Los resultados se presentan gráficos, tablas simples y de doble entrada.Resultados: La población de estudio incluyó 44 pacientes con rango de edad de 30 a 93 años. La edad comprendida entre 50-69 años fueron los más frecuentemente afectados con el 54.6%; el 31.8% de las pacientes se encontraron en estadío IIA al momento del diagnóstico; la supervivencia media libre de enfermedad fue de 15.42 meses (6-29); la frecuencia de recaídas fue del 16 % y la mortalidad fue del 23%; la media de supervivencia global fue de 29.10 meses (13-60); existe una relación estadística significativa de la recaída de la enfermedad con el estadío localmente avanzado IIIA (p=0,004). Conclusiones: El pronóstico del carcinoma de mama triple negativo es malo y por su comportamiento más agresivo tiene menor tiempo de intervalo libre de enfermedad y de sobrevida global, presentando mayor riesgo de desarrollar mala respuesta al tratamiento. Existe mayor riesgo de recaídas en pacientes que se realiza el diagnostico en estadíos localmente avanzados de la enfermedad.
Función de luminosidad de cuásares: un enfoque basado en procesos puntuales

espanolLa funci on de luminosidad de cu asares mide el n umero de cu asar es que existen por megaparsec c ubico por unidad de magnitud absoluta. E s una de las herramientas m as importantes para estudiar la poblaci on de galaxias de n ucleo activo y su evoluci on a lo largo del tiempo. Nuestra invest igaci on pretende estimar esta funci on bajo un enfoque probabil istico. Mediante un proceso de Poisson no homog eneo bidimensional modelamos la intens idad de cu asares observados en un espacio de magnitud absoluta por c orrimien- to al rojo. Se desarrollan una serie de modelos flexibles para la funci on de luminosidad que son estimados por el m etodo de m axima verosimilit ud y seleccionados mediante el criterio de informaci on bayesiano (BIC ). Un an alisis de residuos es efectuado con el objetivo de estudiar la bon dad del ajuste del mejor modelo, del cual a su vez se obtiene la funci on de lumino- sidad buscada. EnglishThe quasar luminosity function measures the number of quasars pe r cu- bic megaparsec and absolute magnitude. It is one of the most import ant tools for studying the active galactic nucleus population and how the y ha- ve evolved in time. Our investigation estimates this function through a probabilistic approach. We model the observed density of quasars using a bidimensional non-homogeneous Poisson process in the space of ab solute magnitude times redshift. A series of adjustable parametrized mod els are tested and we use maximum likelihood and the Bayesian Information Cr i- teria (BIC) to select the best model, from which the corresponding quasar luminosity function is obtained. Finally a residual analysis is made to stu dy the goodness of fit.
Identifying the factors impacting the uptake of educational technology in South African schools: A systematic review

The South African education system is considered one of the most unequal in the world. Providing learners with quality education and equipping them with the digital skills required for the Fourth Industrial Revolution is essential. To achieve this, plans are in place to incorporate educational technology in schools. However, it is important to understand the factors and conditions which have had the greatest impact on this process. This systematic review outlines 5 aspects that have been found to influence the use of educational technology in South African schools: access to technical resources; skills, training and competence; efficacy and efficiency beliefs; pedagogical compatibility; and a supportive leadership and management structure. Recommendations based on these findings are provided which can inform policy and practice.
Challenges of public-school elementary mathematics teaching in the new normal

At the onset of the Covid-19 pandemic, educational institutions worldwide needed to continue with their educational mandates for their learners, albeit not in the usual face-to-face modes. The Higher Education Institutions (HEIs) in the Philippines as well had to replace the on-campus teaching-learning modes with several variants of remote teaching. However, the various remote means are something quite new to both educators and learners, especially in mathematics, wherein various onboard instructions and on-desk hands-on exercises had been the norm. This study used of quantitative approach through online surveys to identify the educators’ challenges with remote teaching implementations in public schools in the Philippines. The findings reveal challenges related to the actual delivery of mathematics instruction, distractions from non-teaching tasks, curricular adjustments, alignment of materials, and orientation of parents or guardians and teachers. The pandemic may not be the last to impact the education system. Overall, the study shows an increased level of challenges for mathematics teaching. Thus, there is an urgent need to readjust policies and procedures affecting environmental learning conditions such as distractions, family-work-life balance, communication technology, rationalization of non-academic duties, increased participation, and support of parents and guardians.
Chemical Stabilization of Expansive Shale Using Natural Bagasse Fibers: A Case Study from Qena Area, Egypt

HE geotechnical performance of natural sugarcane bagasse fibers mixtures was investigated during chemical stabilization process of Dakhla expansive shale. Compositionally, Dakhla Formation, exposed at El-Mahrowsa, Qena, consists mainly of smectite, kaolinite, quartz, calcite, and anhydrite. These mineral associations are reflected by 36.83 wt. % SiO 2 , 16.76 wt. % Al 2 O 3 , 28.59 wt. % CaO, and 6.99 wt. % SO 3 . Geotechnically, the natural compacted shale without bagasse fibers addition exhibited 88 Kpa compressive strength, 35 Kpa tensile strength, and 450 m/s ultrasonic velocity. The free swelling percent of natural expansive shale is 73 %. During the chemical stabilization process, mixtures of natural bagasse fibers (1%) were thoroughly homogenized and compacted with expansive shale. These mixtures were cured at 7, 28, and 90 days under room temperature and 100 % humidity. The geotechnical performance of these mixtures was evaluated using measurement of unconfined compressive strength, tensile strength, longitudinal ultrasonic velocity, and free swelling percent. The overall results indicate that the application of natural bagasse fibers (1%) is useful to improve the geotechnical behaviour of the expansive shale at 7 days curing time (e.g. compressive strength increased from 88 to 310 Kpa, tensile strength increased from 35 to 130 Kpa, and ultrasonic velocity increased from 450 to 541 m/s). Unfortunately, the geotechnical properties of the treated expansive shale using natural bagasse fibers including unconfined compressive strength, tension strength, and ultrasonic velocity do not improve with increasing curing time from 7 to 90 days. Free swelling percent reduces very slightly with increasing curing time from 7 to 90 days.
Regularisation Parameter Selection Via Bootstrapping

Penalised likelihood methods, such as the least absolute shrinkage and selection operator (Lasso) and the smoothly clipped absolute deviation penalty, have become widely used for variable selection in recent years. These methods impose penalties on regression coefficients to shrink a subset of them towards zero to achieve parameter estimation and model selection simultaneously. The amount of shrinkage is controlled by the regularisation parameter. Popular approaches for choosing the regularisation parameter include cross‐validation, various information criteria and bootstrapping methods that are based on mean square error. In this paper, a new data‐driven method for choosing the regularisation parameter is proposed and the consistency of the method is established. It holds not only for the usual fixed‐dimensional case but also for the divergent setting. Simulation results show that the new method outperforms other popular approaches. An application of the proposed method to motif discovery in gene expression analysis is included in this paper.
Virtual element methods for the obstacle problem

We study virtual element methods (VEMs) for solving the obstacle problem, which is a representative elliptic variational inequality of the first kind. VEMs can be regarded as a generalization of standard finite element methods with the addition of some suitable nonpolynomial functions, and the degrees of freedom are carefully chosen so that the stiffness matrix can be computed without actually computing the nonpolynomial functions. With this special design, VEMS can easily deal with complicated element geometries. In this paper we establish a priori error estimates of VEMs for the obstacle problem. We prove that the lowest-order ($k=1$) VEM achieves the optimal convergence order, and suboptimal order is obtained for the VEM with $k=2$. Two numerical examples are reported to show that VEM can work on very general polygonal elements, and the convergence orders in the $H^1$ norm agree well with the theoretical prediction.
Experimental demonstration of deep traps in silica-based polyethylene nanocomposites by combined isothermal surface potential decay and pulsed electro-acoustic measurements

The ability to suppress space charge accumulation at high electric fields makes nanocomposites attract significant research interest as potential insulation materials in high-voltage direct current cable development. At present, the deep trap introduced by nanoparticles is frequently applied to be responsible for the observed space charge suppression in nanocomposites. However, the experimental results that support deep-trap formation have not been rigorously examined. We therefore propose herein a simple and more direct approach based on isothermal surface potential decay combined with pulsed electro-acoustic measurements to verify the presence of deep traps in silica-based blend polyethylene nanocomposites. The results indicate that the deep traps are indeed introduced by filling nanosilica and the space charge suppression observed in the nanocomposite with a low loading ratio is caused by deeply trapped charges in the sub-surface region of specimens.The ability to suppress space charge accumulation at high electric fields makes nanocomposites attract significant research interest as potential insulation materials in high-voltage direct current cable development. At present, the deep trap introduced by nanoparticles is frequently applied to be responsible for the observed space charge suppression in nanocomposites. However, the experimental results that support deep-trap formation have not been rigorously examined. We therefore propose herein a simple and more direct approach based on isothermal surface potential decay combined with pulsed electro-acoustic measurements to verify the presence of deep traps in silica-based blend polyethylene nanocomposites. The results indicate that the deep traps are indeed introduced by filling nanosilica and the space charge suppression observed in the nanocomposite with a low loading ratio is caused by deeply trapped charges in the sub-surface region of specimens.
Transition Edge Sensors and Kinetic Inductance Detectors in Astronomical Instruments

Superconducting detector arrays have become the standard technology for the current generation of millimeter-wave and submm-wave astronomical instruments on individual (single dish) telescopes. Superconducting heterodyne arrays are used for spectroscopic surveys and direct detector arrays are used for photometric imaging and low resolution spectroscopy. Most of these direct detector arrays consist of bolometers with superconducting thermometers called Transition Edge Sensors (TES) and are read out with multiplexed superconducting quantum interference device (SQUID) current amplifiers. Another superconducting detector technology called Kinetic Inductance Detectors (KIDs) is starting to be used in new astronomical instruments as well. This review describes the properties of these two types of detectors and the prospects for future development of both types of technologies toward larger pixel counts and more capable instruments.
Edge-adaptive \begin{document}$ \ell_2 $\end{document} regularization image reconstruction from non-uniform Fourier data

Signals and images recovered from edge-sparsity based reconstruction methods may not truely be sparse in the edge domain, and often result in poor quality reconstruction. Iteratively reweighted methods provide some improvement in accuracy, but at the cost of extended runtime. This paper examines such methods when data are acquired as non-uniform Fourier samples, and then presents a new non-iterative weighted regularization method that first pre-processes the data to determine the precise locations of the non-zero values in the edge domain. Our new method is both accurate and efficient, and outperforms reweighted regularization methods in several numerical experiments.
Síndrome de sobrecarga en cuidadores de Alzheimer. Revisión sistemática.

El progresivo envejecimiento de la sociedad hace que se disparen los índices de enfermedades asociadas a la senectud como es el caso de la enfermedad de Alzheimer (EA), la cual produce un deterioro cognitivo progresivo generando gran dependencia a los afectados y cuyo cuidado suele recaer en un único cuidador, con frecuencia conllevado una gran carga de trabajo y un deterioro de su salud. La presente revisión sistemática tiene como objetivo profundizar en el conocimiento sobre los factores relacionados con la sobrecarga en cuidadores informales de EA. Los hallazgos derivados de los estudios confirman el predominio de las mujeres en las tareas relacionadas con el cuidado. También queda de manifiesto la presencia de altos niveles de carga en cuidadores de EA y la existencia de factores moderadores, como la resiliencia, las estrategias de afrontamiento, los aspectos positivos del cuidado, la religiosidad, la autoeficacia o el apoyo social percibido. Palabras clave: enfermedad de Alzheimer, cuidador, sobrecarga, burnout, cognición, afrontamiento.
Consensus of a two-agent opinion dynamical system with processing delay

A sufficient condition is obtained for a two-agent opinion dynamical system with processing delay to experience unconditional consensus. To this end, the dynamics proposed is transformed into a general class of delay differential equation and asymptotic stability of the origin is then analyzed. It is also shown that increasing delay can prolong the time needed for the system to realize consensus and even induce a Hopf bifurcation.
Descriptive study on the instructional supervision practices of Bangsamoro school heads: Evaluating their impact on educational improvement

Education plays a transformative role in society, shaping individuals' lives and contributing to overall development. The learners are considered the nucleus of education wherein studies show that their development is dependent on the teachers’ capabilities and commitment in which these are likewise influenced by supervisors’ instructional supervisory skills in collaboration with the educational environmental actors. The effective implementation of education relies on the collaborative efforts of stakeholders, with instructional supervisors playing a crucial role in supporting teachers as they facilitate student learning. This study aimed to assess the extent of instructional supervisory practices among school heads in the Bangsamoro Autonomous Region in Muslim Mindanao. A descriptive quantitative research design was employed, and a random sample of 314 comprising school heads and teachers participated as research subjects. The findings revealed that the instructional supervision practices of school heads, particularly in terms of teachers' guidance, support, and performance assessment, were evidently practiced but not fully implemented. This indicates a need to enhance the implementation of supervisory practices of school heads to ensure the provision of appropriate interventions to teachers, who are at the forefront of education. It is therefore recommended that educational institutions in the Bangsamoro Autonomous Region in Muslim Mindanao provide comprehensive training and professional development for school heads to enhance their supervisory skills; cultivate a collaborative culture to facilitate communication and sharing of best practices; allocate adequate resources and support for instructional supervision; and promote ongoing professional growth for teachers through continuous development programs as well as conduct regular evaluations to monitor and improve instructional supervision practices leading to quality education in the region and in the global community.
A Drop in the Ocean: How Priors Anchor Attitudes Toward the American Carceral State

Abstract That black and white Americans disagree about the carceral state is well established; why this is the case is much less clear. Drawing on group hierarchy theory and the state's role in perpetuating group subordination/domination, we theorize that differences in socialization and contact during emergent adulthood produce divergent priors for racial groups and gender subgroups within race. These different starting points shape how people integrate new information from recent contact into their belief systems. Using a survey of over 11,000 respondents, we find that, instead of all groups integrating information the same way, recent direct contact contributes most to negative attitudes among groups whose contact with government agents is least negatively valenced. While interactions with the American carceral state divide opinions considerably among white Americans and women, adulthood contact for black Americans, especially black men, appears to be but ‘a drop in the ocean’ of political life.
Angle dependence of synthesized BiOI prepared by dip coating and its effect on the photovoltaic performance

A study about the angle effect on the synthesis of BiOI films via modified successive ionic layer adsorption and reaction (SILAR) and its application as p-type semiconductor in solar cell construction have been carried out. By involving the angle inclination on the BiOI synthesis process in this work, it showed the impact on the BiOI film thickness. We found the thicker films contained larger flaky morphology which was displayed by the FESEM image. Also, it exhibited an increase of the Bi-I internal stretching mode (Eg) in the Raman spectra, BiOI peak absorbance in the visible region, and its crystal intensity in the XRD pattern along with the decreasing angle from 90° to 50° while SILAR process was running. Although our BiOI films performed better Jsc compared to previous studies, their photovoltaic parameters decreased slightly upon the reducing angle, which induced larger BiOI growth in the larger flaky cluster.
PENERAPAN LIGHT GRADIENT BOOSTING DALAM PREDIKSI RASIO KLIK TAYANG

Prediksi rasio klik tayang adalah salah satu kriteria yang paling sering digunakan untuk menentukan efektivitas suatu iklan. Dalam produksi periklanan, prediksi klik tayang sangat berpengaruh bagi perusahaan yang memasang iklan tersebut. Selain memprediksi klik tayang suatu iklan, pemakaian model atau algoritma yang digunakan juga sangat penting dalam menganalisa klik tayang yang terjadi. Penelitian ini melakukan pengujian dengan dataset social network menggunakan light gradient boosting. Dilakukan pengujuan resampling untuk mengetahui pengaruh penggunaan pada dataset social network yang tidak seimbang. Hasil pengujian prediksi rasio klik tayang memperoleh hasil terbaik pada nilai accuracy 91.25%, recall 93.10%, precision 84.38% F1-Score 88.52% dan AUC 0,92. Hasil ini diperoleh dari pengujian tanpa resampling dan menggunakan resampling ROS.
Effects of Ultrasound-Guided Lower Extremity Nerve Blocks for Below-Knee Procedures in the Emergency Department of a Tertiary Care Hospital, Central Gujarat

Background and objectives Ultrasound-guided femoral and popliteal sciatic nerve blocks are useful adjuncts for many below-knee procedures like debridement, amputation, etc. The objectives of the study were to find the efficacy and feasibility of the ultrasound-guided combined femoral and popliteal sciatic nerve block for below-knee procedures in the Emergency Medicine Department (ED). Methodology This prospective clinical study was carried out over three months in ED. A total of 30 patients undergoing below-knee procedures were included in the study. Femoral and popliteal sciatic nerve blocks were administered to each patient using the high-frequency linear ultrasound probe by emergency physicians trained in ultrasound. The effect of blocks, amount of local anesthetic (LA) used, duration of the procedure, and post-block analgesia were recorded. Patients were monitored for possible complications, if any. Data were entered and analyzed using a Microsoft Excel worksheet. Results The average volume of LAs required was around 34.5 cc for both blocks combined. No complications like vascular puncture or nerve injury were reported during the study. The time taken to complete the procedure was around 33 minutes, and the average time to achieve sensory block was around 9 minutes after completing the procedure. Conclusions An ultrasound-guided combined femoral and popliteal sciatic nerve block is an effective and feasible procedure and thus should be considered in ED for below-knee procedures.