Miracle-dz/UniFAR-FTUs huggingface dataset:
Learning Analytics para una visión tipificada del aprendizaje de los estudiantes. Un estudio de caso

Los nuevos métodos de enseñanza-aprendizaje, con apoyo de los entornos virtuales, como extensión asincrónica de las aulas, han determinado que el docente asuma nuevos roles, algunos de los cuales pasan por aumentar su capacidad de observación y convertirse en analista del proceso de aprendizaje de los estudiantes, del uso que hacen de las plataformas digitales, su interrelación con ellas y entre sí, y de cómo adquieren conocimientos y desarrollan algunas competencias. Desde ésta óptica, el trabajo aborda una primera explotación de los usos y registros estadísticos, que a modo de huella digital, dejan los estudiantes en cursos presenciales en los espacios virtuales, y que definen tipologías y patrones diferenciados de aprendizaje según ritmos, aspecto éste que puede conllevar a una reflexión y reorientación del proceso de enseñanza-aprendizaje futuro. En concreto, el estudio de caso recoge resultados descriptivos de la interacción del uso que los estudiantes realizan de los recursos digitales con la evaluación continua y las calificaciones en la asignatura de Análisis Microeconómico Avanzado, del grado en Economía (GECO), UCM en el curso 2018-19, aportando un perfil de uso aún muy tradicional y polarizado, vinculada con mínimos desfases al cronograma de las actividades propuestas por el profesor.
Psikologi kepribadian: menyelami misteri kepribadian manusia

Melalui lembar demi lembarnya, kita diajak untuk memahami integritas pribadi kita ke arah positif menggunakan metode psikoterapi Barat dan Islam (metode sufi). Proses konseling yang diajukan bersifat konseptual, komparatif, dan praktis. Sehingga, adakalanya psikoterapi Barat dan Islam bisa dijalankan secara beriringan atau berdasarkan prosedur masing-masing
Implementation constraints limit benefits of restoration treatments in mixed-conifer forests

Forest restoration treatments seek to increase resilience to wildfire and a changing climate while avoiding negative impacts to the ecosystem. The extent and intensity of treatments are often constrained by operational considerations and concerns over uncertainty in the trade-offs of addressing different management goals. The recent (2012–15) extreme drought in California, USA, resulted in widespread tree mortality, particularly in the southern Sierra Nevada, and provided an opportunity to assess the effects of restoration treatments on forest resilience to drought. We assessed changes in mixed-conifer forest structure following thinning and understorey burning at the Kings River Experimental Watersheds in the southern Sierra Nevada, and how treatments, topography and forest structure related to tree mortality in the recent drought. Treatments had negligible effect on basal area, tree density and canopy cover. Following the recent drought, average basal area mortality within the watersheds ranged from 5 to 26% across riparian areas and 12 to 44% across upland areas, with a range of 0 to 95% across all plots. Tree mortality was not significantly influenced by restoration treatments or topography. Our results suggest that the constraints common to many restoration treatments may limit their ability to mitigate the impacts of severe drought.
Encoding Specificity Principle

or negatively. The results of such eqxtiments show that both recall and recognition of the studied items vary with the w e of encoding operation and response category at the time of study. Semantic judgements are more effective than phonemic iudmments which in turn are more kffective than-graphemic ones; also for the first two kinds of iudwments, encoding ques. tions requiring affirmative responses are more effective than those requiring neeative ones. The superiority of s;man$ encoding is reeularlv found in most situations. But the fact . that recognition is higher for semantic questions answered affirmatively than for those answered negatively suggests that semantic encoding operations can be further analyzed into ditferentially effective classes. Such further analysis shows that different kinds of semantic encoding operations can also mry in effectiveness. In one experiment, for example (Mathews, 1977). people were presented with word triplets (e.g. "lion," "whale," "mammal"; or "lion," "whale," " . arms": or "lion," "whale," "metal") and were asked to judge whether both, one, or none of the first ~ m o words were semantically related to the third. All subjects were subsequently given one of the two first words from the uiplet as a cue (e.g. "lion'') and asked to recall the other one (here, "whale"). The results showed that the probability of such cued recall varied greatly over a range of 0.10 to 0.68 -with the number of semantic relations in the study triplet. The effects of many different encoding operations have been reliably documented in the literature, using such standard measures of memory performance as free recall and recognition. It is generally assumed that encoding operations play an imponant role in memory even when they are not specifically manipulated, and even when the rememberer is not consciously aware of how any particular event has been encoded. It is also known that the exact effects of any encoding operation depend on the nature of retrieval information available to the learner at the time of retrieval. These effem are subsumed under the rubric of the ENCODING S P E C I P I C ~ PRINCIPLE. ENCODING SPECIFICITY PRINCIPLE
Enhanced UV‐C Detection of Perovskite Photodetector Arrays via Inorganic CsPbBr3 Quantum Dot Down‐Conversion Layer

Organometal halide perovskites have been considered as promising candidates for high‐performance low‐cost photodetectors. Nonetheless, as perovskite photodetectors are usually built on glass or polymer substrates, their UV‐C (200–280 nm) photodetection ability is quite limited due to the high absorption of glass or polymer substrates. Here, a uniform UV photodetector array which integrates perovskite photodiodes with inorganic CsPbBr3 quantum dot (QD) fluorophor is reported. CsPbBr3 quantum dot fluorophor not only acts as an efficient down‐conversion layer to convert UV light into 510 nm light, but also functions as a protective layer to prevent degradation of hybrid organic–inorganic perovskite by UV light. Compared to direct UV‐C (279 nm) detection with perovskite photodiode, the QD integrated photodetector shows a higher responsibility and detectivity to UV‐C, with values enhanced by 1 order in magnitude. This work provides a low‐cost and effective approach for all perovskite‐based UV‐C photodetectors and imagers.
Update on Finalist Grøstl

Dear all, as announced in December the Grøstl hash function has been tweaked for the final round. The round3mods, updated specification, implementation and cryptanalysis are available at www.groestl. info. For the final round we have * significantly increased the size of the round constants to make the internal differential attack and its extensions impossible * and use different rotation constants in Q to make P and Q more different which further increases the security margin by one round. Note that the link on the NIST Round3 website still points to the Round2 submission package. Dear all, please find a 2-page summary+appendix entitled "Update on Finalist Grøstl" in the attachment.
On convolution of graph signals and deep learning on graph domains. (Convolution et apprentissage profond sur graphes)

Convolutional neural networks have proven to be the deep learning model that performs best on regularly structured datasets like images or sounds. However, they cannot be applied on datasets with an irregular structure (e.g. sensor networks, citation networks, MRIs). In this thesis, we develop an algebraic theory of convolutions on irregular domains. We construct a family of convolutions that are based on group actions (or, more generally, groupoid actions) that acts on the vertex domain and that have properties that depend on the edges. With the help of these convolutions, we propose extensions of convolutional neural netowrks to graph domains. Our researches lead us to propose a generic formulation of the propagation between layers, that we call the neural contraction. From this formulation, we derive many novel neural network models that can be applied on irregular domains. Through benchmarks and experiments, we show that they attain state-of-the-art performances, and beat them in some cases.
Advanced Digital Signal Processing Techniques for High-Speed Optical Communications Links

The main topic of this thesis is the application of advanced Digital Signal Processing (DSP) techniques to high data-rate optical links. This thesis is divided in two parts: Direct-Detection systems, and Coherent systems. In the first part, it is proposed a novel bi-directional architecture for <2km Intra-DC link and a detailed analysis of self-coherent single-sideband transmission for <80km dispersion-uncompensated Inter-DC link. The second part instead focuses on Probabilistic Constellation Shaping techniques, and their impact on long-haul optical communication links.
Farming the Planet. 2: The Geographic Distribution of Crop Areas and Yields in the Year 2000

Croplands cover ~15 million km2 of the planet and provide the bulk of the food and fiber essential to human well-being. Most global land-cover datasets from satellites group croplands into just a few categories, thereby excluding information that is critical for answering key questions ranging from biodiversity conservation to food security to biogeochemical cycling. Information about agricultural land-use practices like crop selection, yield, and fertilizer use is even more limited. Here we present land-use datasets created by combining national-, state-, and county-level census statistics with a recently updated global dataset of croplands on a 5 minute by 5 minute (~10 km by 10 km) latitude-longitude grid. The resulting land-use datasets depict circa the year 2000 the area (harvested) and yield of 175 distinct crops of the world.
Variables That Influence Articulation Accuracy in Children with Down Syndrome and Specific Language Disorder: Similarities and Differences

Research about speech sound disorders (SSD) in children with Down syndrome (DS) and children with specific language impairment (SLI) suggests similar linguistic profiles with weakness in phonology skills. The question is if these similarities are superficial or share deficits in levels and underlying skills to its speech disorders: phonological memory (PM), coordination motor skills, and articulatory muscular system. Our research involved 24 children divided into four groups: SLI, DS, and two groups of typical development. SLI group presented a mild‐moderate speech disorder and DS group moderate‐severe. Following skills were evaluated: nonverbal intelligence, PM, and oral motor coordination (oral‐DDK). The Iowa Oral Performance Instrument (IOPI) was used for the measurement of physiological variables (strength and endurance of tongue and lips). Percentage of consonants correct (PCC) was found. Phonological memory, motor coordination, and physiological variables are factors associated with SSD in teenagers with DS. However, SSD in children with SLI only are associated to phonological memory. Motor coordination and physiological variables are not involved in their SSD of mild and moderate‐severe levels. We have objectively measured the strength and endurance of tongue and lips. This may have clinical implications. It is necessary to assess objectively all the variables affecting articulatory accuracy to design intervention programs in SSD.
Evaluation of P Dispersion and P Dispersion Recovery in Patients with Pseudoexfoliative Syndrome

Background: Pseudoexfoliative syndrome (PEX) is an old-age disease characterized by the accumulation of fibril materials in both the eye and extraocular organs. PEX is associated with many morbid and mortal cardiovascular diseases. The aim of our study was to investigate the effects of the stress test on P Wave dispersion (PWD) in patients with PEX. Patients and Methods: Forty patients who presented to the ophthalmology outpatient clinic between February 2018 and September 2018 and diagnosed as PEX in the ophthalmologic examination were included in the study. As a control group, forty-four patients, age and gender-matched, who applied to the cardiology outpatient clinic, diagnosed in the outpatient clinic of ophthalmology non-PEX, were included in the study. The study and control group were subjected to treadmill exercise test (TET) according to Bruce protocol. Results: The recovery PWD value of the study group in the third minutes was 34.4 ±4.35 ms and rest PWD value of study group 32.925±5.17 ms. There was no statistically significant difference between the two values (t=1.37992, p=0.08). The basal PWD value of the control group was 31.79±3.9ms, the recovery PWD value of the control group in the second minute 32.65±3.48 ms. There was no statistically significant difference between the two values (t=1.09495, p=0.13). Conclusion: The most interesting result of the study was that the difference between the recovery PWD value and the resting PWD value in the study group was statistically insignificant in the third recovery minute, whereas in the control group it occurred in the second minute.
Female Entrepreneurship in Morocco, Obstacles and Ways to Overcome Them

Facing a labor market that is unable to absorb a growing demand, entrepreneurship and self-employment is an interesting path on many levels. In addition to being a real driver of growth and competitiveness, entrepreneurship is also a mean of self-realization, independence and personal growth.However, Women appear relatively few to engage in this career path. Indeed, the Association of Women Entrepreneurs “Association des Femmes Entrepreneures (AFEM)” estimates that the #of women entrepreneurs in Morocco does not exceed 10,000, which represents barely 0.5% of women's employment in the formal sector and about 10% of the #total enterprises. What are the reasons behind this fact-finding and how to overcome this existing situation? Several factors impeding women's entrepreneurship are noted in the literature. Some are personal; others are cultural or related to the general environment of entrepreneurship. This communication is meant to be an exploration of the different obstacles to women's entrepreneurship in Morocco, as well as actions to put in place to promote it. A sample survey will be conducted with a representative sample of women and stakeholders in Entrepreneurship ecosystem to identify the most influential factors and highlight the levers to be used to promote female entrepreneurship.
Synchrotron X-ray topography study of defects in epitaxial GaAs on high-quality Ge

Crystal defects of GaAs thin films deposited by metalorganic vapour phase epitaxy on high-quality Ge substrates are studied by synchrotron X-ray topography. The GaAs thin films were measured to have 500 dislocations cm , which is a similar number to what plain Ge substrates show. The dislocation densities measured are also smaller than, for instance, those of high-quality vapour pressure controlled Czochralski grown GaAs wafers, which typically have dislocation densities of 1500 cm . The GaAs films grown on both sides of two-sided substrates display very good crystal quality throughout the sample. r 2006 Elsevier B.V. All rights reserved. PACS: 79.60. Jv; 81.05. Ea; 61.72. Ff; 81.10. Bk
Interlanguage or Technology when Using English as Vehicular Language: what influences students productions online?

This article seeks to explore what influences the production of accurate online written texts in English by speakers of Spanish. In order to do so, the cases where the pronoun “I” is not capitalized have been examined in detail to determine whether we are facing an error due to a lack of proficiency or whether the use of ICT is to blame. After going through the cases of “i” and observing the other mistakes made in the texts where they appear, ICT together with lack of proofreading, and interlanguage seem to be the possible answers. Although we can establish the use of technology and, therefore, Computer-Mediated Communication (CMC) as the cause of most cases in analogy with what happens with native speakers, further investigation is needed and new research with similar control groups where explicit corrective feedback is given could give us more clues about the behaviour of the participants.
Boat anchoring contributes substantially to coral reef degradation in the British Virgin Islands

Community decline is often linked to anthropogenic activities. Coral reef declines, for example, have been linked to overfishing and climate change, but impacts of coastal development, pollution, and tourism have received increasing attention. Here, we isolated the impact of one little-studied aspect of recreational activity on coral reefs—damage from boat anchoring—by performing a survey of 24 sites in the British Virgin Islands (BVI) subject to varying levels of anchoring activity. The percent cover of hard corals and sea fans was reduced by a factor of ∼1.7 and ∼2.6 respectively at highly anchored sites. Hard coral colonies were 40% smaller in surface area and ∼60% less dense at sites experiencing high anchoring frequency. In addition, highly anchored sites supported only ∼60% of the species richness of little anchored sites. Frequently anchored sites were ∼60% as structurally complex and supported less than half as many fish as those rarely anchored, with 5 of 7 fish functional groups affected. Roughly 24% of BVI coral reef by area appears suitable for anchoring, suggesting that impacts associated with boat anchoring may be both locally severe and more pervasive than previously appreciated.
Long-Term Effects of a Soft Robotic Suit on Gait Characteristics in Healthy Elderly Persons

As a walking assistive device for elderly persons, one of the major aims should be to improve and rehabilitate gait characteristics after long-term repeated use of the device. However, most of the existing research on walking assistive devices only emphasize their immediate effects, and there is limited research indicating the long-term effects. To address this gap, this paper experimentally validates the effects of our soft wearable robotic suit on gait characteristics of elderly persons after repeated use of the device for six weeks. Experimental results on four elderly subjects (age = 74.8 ± 5.0 year) show that, after six weeks of gait rehabilitation training by the robotic suit, the gait characteristics of the subjects were improved, leading to an increased walk ratio with an average of 9.8% compared with the initial state. The results of this research will benefit the potential use of the robotic suit in gait training and rehabilitation for elderly persons and also will be useful to the establishment of practical guidelines that maximize the training and rehabilitation effectiveness of the robotic suit.
Design, Control, and Preliminary Assessment of a Multifunctional Semipowered Ankle Prosthesis

This paper describes the design, control, and preliminary assessment of a novel microprocessor-controlled multifunction ankle prosthesis that provides three microprocessor-controlled behaviors—a selectable stiffness equilibrium angle, lockable conformal damping, and swing-phase repositioning. Following a description of the motivation for providing these behaviors, the authors provide a detailed description of the device and walking controller design. This device utilizes a power-asymmetric linear actuator to provide the desired functionality in a compact and lightweight package through a combination of both hydraulic and electromechanical actuation approaches. The device is controlled for level ground walking via a finite-state machine. The functionality of the prosthesis is demonstrated by a set of benchtop experiments that characterize the ability of the prosthesis to provide the three desired behaviors and by an experiment in which the prosthesis was worn by a transtibial amputee during walking. Both sets of experiments indicate that the prosthesis provides the functionality for which it was designed.
Consumption-vs. Production-based Emission Policies

13 Emission leakage could potentially undermine the effectiveness of unilateral 14 climate policies. Significant emission transfers from developing to developed 15 countries in the form of emissions embodied in trade have been interpreted as an 16 indication of such leakage. In order to reduce leakage and provide an appropriate 17 picture of countries’ responsibility for global emissions, it has been proposed to 18 attribute emissions on the basis of consumption instead of production. However, 19 as one unit of imported emissions cannot generally be equated with a 20 corresponding increase of emissions released to the atmosphere, putting a price 21 on an externality equal to its social costs (e.g. by means of consumption-based 22 emission pricing) is not optimal for emissions embodied in imports. Hence, we 23 mandate considering a broad scope of trade measures to reduce leakage, in 24 particular focusing on a few highly traded emission-intensive industries and 25 exploiting the potential of export taxes to alleviate distributional concerns and 26 political resistance. Finally, we argue that the optimal policy portfolio to address 27 leakage may contain not only trade measures but also some form free allocation 28 of emission permits as well as sectoral approaches. 29 30 Acknowledgements: We are grateful to Sabine Fuss and Philippe Quirion for 31 helpful comments and suggestions and to Silvia Forin and Hauke Schult for 32 assistance with consumption-based emission data. 33
Analysis of CFO Estimation for QAM-FBMC Systems Considering Non-Orthogonal Prototype Filters

The carrier frequency offset (CFO) on the orthogonal waveforms such as orthogonal frequency division multiplexing and offset quadrature amplitude modulation filter-bank multi-carrier (QAM-FBMC) has been well studied. However, the impact of the CFO on the QAM-FBMC systems is more complicated because of non-orthogonal prototype filters. The unavoidable interference from the non-orthogonality makes pilot signal design difficult and makes it hard to estimate the CFO accurately. In this paper, we discover the impact of the CFO on QAM-FBMC systems, evaluate the procedures of the basic CFO estimation methods, and analyze the performances of the CFO estimations. For the integer part estimation of CFO, we propose the design of pilot symbol that has a prominent peak at pilot subcarrier location in the up-sampled frequency domain. For the fractional part estimation, we formulate the basic CFO estimation by using two adjacent pilot symbols, and we analyze the mean-squared error performances with linear approximation and Cramer–Rao lower bound. We compare the performance of the CFO estimator and analytic approach in the additive white Gaussian noise and the pedestrian channel and show that the proposed estimator works well in the non-orthogonal QAM-FBMC systems.
A rectal cancer model establishes a platform to study individual responses to chemoradiation

Rectal cancer (RC) is a challenging disease to treat that requires chemotherapy, radiation, and surgery to optimize outcomes for individual patients. No accurate model of RC exists to answer fundamental research questions relevant to individual patients. We established a biorepository of 32 patient-derived RC organoid cultures (tumoroids) from patients with primary, metastatic, or recurrent disease. RC tumoroids retained molecular features of the tumors from which they were derived, and their ex vivo responses to clinically relevant chemotherapy and radiation treatment correlate well with responses noted in individual patients’ tumors. Upon engraftment into murine rectal mucosa, human RC tumoroids gave rise to invasive rectal cancer followed by metastasis to lung and liver. Importantly, engrafted tumors closely reflected the heterogenous sensitivity to chemotherapy observed clinically. Thus, the biology and drug sensitivity of RC clinical isolates can be efficiently interrogated using an organoid-based, in vitro platform coupled with endoluminal propagation in animals.