Miracle-dz/UniFAR-FTUs huggingface dataset:
Curso Híbrido usando a Rede Social Facebook no Ensino de Programação de Computadores

Este artigo apresenta uma pesquisa-piloto de curso hibrido com base nas interacoes e conexoes que ocorreram em um grupo da rede social Facebook para alunos de ensino medio. Nesse contexto de atrair novos alunos para a area da computacao, perceberam-se na analise de rede os pedidos de outros individuos para participarem do curso online, alem das relacoes e fluxos entre os atores que criram lacos de comunicacao e troca de informacoes.
Outage Probability and Achievable Diversity Order of Opportunistic Relaying in Cognitive Secondary Radio Networks

In cognitive radio networks, cognitive secondary users (CSUs) can interfere with the primary users (PUs) when they falsely occupy the PU's licensed spectrum. If CSUs in transmission temporarily form a cooperative relaying network, the interference from CSUs to PU can be reduced due to the cooperative diversity. In this paper, the outage performance as well as the achievable diversity order of opportunistic relaying used for cooperative CSUs is investigated. The cooperative relaying network of CSUs is referred to opportunistically relayed cognitive secondary network (ORCSN). Exact outage probabilities and then the diversity order by high SNR approximation are provided under Rayleigh and Nakagami-m fading channels, respectively. It is shown that a spectrum-sensing method used by the CSUs plays an important role in determining the diversity order in ORCSN. Under Rayleigh fading channels, a cooperative sensing enables ORCSN to achieve the full diversity order but a distributed sensing provides the diversity order smaller than one. Under Nakagami-m fading channels, the achievable diversity order is restricted by the Nakagami channel parameters between the PU and the CSUs and also depends on the sensing method. Moreover, the full diversity order can be achieved by a proper selection of the threshold used for spectrum sensing. Numerical investigation is also provided and used to verify the analysis.
Robustez mental: uma perspectiva integradora

A literatura em psicologia do desporto refere-se a robustez mental como uma das carateristicas psicologicas mais importantes no desempenho desportivo, apesar dos investigadores, ate recentemente, terem devotado pouco tempo ao estudo do construto. Esta revisao aborda as principais definicoes e conceptualizacoes sobre a robustez, relacionando-a com outros construtos similares e concorrentes e tentando integrar diversas perspectivas provindas de diferentes comunidades de pesquisa. Propomos que a robustez mental do desportista seja concebida como um sistema ecologico e dinâmico de gestao de recursos, numa concecao que amplia o conceito de robustez a uma meta-competencia envolvendo integracao dinâmica de diversos recursos psicolo- gicos, diferentemente mobilizaveis em funcao das carateristicas dos individuos, da natureza dos problemas, das situacoes e dos contextos, de modo a enfrentar os desafios da vida e as tarefas da existencia.
Functional morphology of the head of the anabantoid teleost fish Helostoma temmincki

Osteology, myology and motion analysis of the head of the anabantoid fish Helostoma temmincki, a specialized filter feeder, has revealed six functional units: neurocranium, suspensory apparatus, opercular apparatus, hyoid apparatus, branchial apparatus and pectoral girdle. Interactions between the functional units take place through four couplings involved in opening and protruding the jaws. The first coupling is activated in the beginning of the opening cycle by the levator operculi muscle through the opercular apparatus, interoperculomandibular ligament and mandible. The second is activated during feeding by contraction of the sternohyoideus through the hyoid apparatus, interopercular, interoperculomandibular ligament and mandible. The third coupling is active during feeding and “kissing” by contraction of epaxial muscles through mediation of the neurocranium to the jaw apparatus. The fourth coupling is the only one active during air intake and involves contraction of the levator arcus palatini which abducts and rotates the suspensory apparatus forwards, causing the mandible to drop. The retention of isolated ancestral characters during mosaic evolution are explained in terms of the maintenance of couplings which represent functional associations of seemingly remote structures. When natural selection acts on one component of a functional unit or coupling, it essentially acts on all associated elements simultaneously causing character complexes to evolve in common evolutionary trends. It is feasible that functional analysis can separate primary from secondary evolutionary trends.
Characteristics of a planar dipole antenna with a parasitic element

A printed dipole antenna with a parasitic element of dual-band operation is proposed for WiMAX applications. The lower-operating band is obtained from dipole arms. By using the technique of coupling dipole arms and a parasitic element is proved to form a dual-band operation. The proposed antenna was successfully implemented and verified. It also has a compact size and good radiation performances.
Evolution of Epilepsy with Rolandic Paroxysmal Foci: A Study of 324 Cases

The evolution of 324 cases exhibiting the electroclinical features of benign epilepsy of children with interictal rolandic paroxysmal foci (rolandic paroxysmal epilepsy or RPE) was studied during treatment (262 cases), after cure (120 cases), and without treatment (21 cases). Regarding frequency of seizures, the effects of treatment after 1 year and after 5 years are similar: disappearance of seizures in 55.3% and 50.7%, respectively. A cure is defined as nonreap‐pearance of seizures in the absence of any drug therapy for at least 1 year in patients above âge 13 (120 cases). The âge of the 120 cured patients is over 15 in 105 cases and over 20 in 56 cases. The study of 21 children who never received treatment, while not statistically significant, suggests that the evolution may be the same as with treatment (most often favorable in the short and medium term) and leads to a cure (11 cases). The practical implications of these results are very important: they allow one to adopt an exceptionally reassuring attitude. Treatment does not always seem necessary.
Fluconazole toxicity is independent of oxidative stress and apoptotic effector mechanisms in Saccharomyces cerevisiae

Summary Fluconazole toxicity was previously shown to require intact mitochondria in Saccharomyces cerevisiae, however, the mechanism of mitochondrial‐dependent azole toxicity is unclear. Here we show that fluconazole toxicity is not attenuated by the overexpression of the mitochondrially‐acting human antiapoptotic protein Bcl‐2 nor is it increased by the presence of the oxidating agents in S. cerevisiae. Our data further support the notion that mitochondrial toxicity in the presence of azoles is modulated by the conversion of ergosterol precursors to toxic sterols.
Patterns of care for patients with primary differentiated carcinoma of the thyroid gland treated in Germany during 1996

To determine current patterns of care and disease characteristics for patients with thyroid carcinoma, a Patient Care Evaluation Study was initiated in 1996 in the U.S. and Germany. This project addresses ongoing concerns with respect to the diagnostic evaluation and treatment of patients diagnosed with thyroid carcinoma and raises questions concerning how physicians are interpreting current standards and acting on the basis of these recommendations.
A flexible high voltage biphasic current-controlled stimulator

The efficiency of implantable stimulation systems depends in large proportion of the electrode-tissue interface condition and in the choice of appropriate stimuli waveform. In this paper, we present an integrated flexible stimuli generator dedicated for high current stimulation in large electrode-tissue contact impedance. The system, powered by a single 3.3 V supply level, includes an integrated high voltage generator in order to supplies the output stage with -10 V/+10 V. High voltage parts are implemented in a 9 mm2 chip using a 0.8 um high voltage process. For area and power efficiency concern, the control unit of the whole device is implemented in a standard 0.18 um technology and use 1.96 mm2 of silicon area. Preliminary results indicate that the stimuli generator can deliver a stimulating current of 2 mA in electrode-tissue impedance as high as 9.125 kOmega.
Investigating the Effect of Object-oriented Metrics on Fault Proneness Using Empirical Analysis

This paper presents an innovative metric based on a class abstraction to capture aspects of software complexity through combinations of class characteristics. The study also used software metrics effectiveness in finding the classes in different error categories for the three versions of Eclipse, the Java-based open-source Integrated Development Environment. Many studies used Logistic regression models to investigate the ability of OO software metrics to predict fault prone classes. We also used this method not only for binary but also multinomial categorization and empirically validate the ability of metrics to predict fault prone classes in different category using fault data. We conclude that this proposed metric is as effective as the traditional metrics in identifying fault-prone classes in binary categorization and also showing most efficient result for multinomial categorization. We also find that Univariate model for these metrics have same performance as the individual metric with no any learning technique in prediction of fault-proneness.
Protein–RNA contacts at crystal packing surfaces

The crystal packing surfaces comprising protein–RNA interactions were analyzed for 50 RNA‐protein crystal structures in the Protein Data Bank database. Protein–RNA crystal contacts, which represent nonspecific protein–RNA interfaces, were investigated for their amino acid propensities, hydrogen bond patterns, and backbone and side chain interactions. When compared to biologically relevant interactions, the protein–RNA crystal contacts exhibit similarities as well as differences with respect to the principles of protein–RNA interactions. Similar to what was observed at cognate protein–RNA interfaces, positively charged amino acids have high propensities at noncognate protein–RNA interfaces and preferentially form hydrogen bonds with RNA phosphate groups. In contrast, nonpolar residues are less frequently associated with noncognate interactions. These results highlight the important roles of both electrostatic and hydrogen bonding interactions, facilitated by positively charged amino acids, in mediating both specific and nonspecific protein–RNA interactions. Proteins 2007. © 2007 Wiley‐Liss, Inc.
Clinical features and predictors of outcome in acute hepatitis A and hepatitis E virus hepatitis on cirrhosis

Background and Objectives: Acute hepatitis A and E are recognized triggers of hepatic decompensation in patients with cirrhosis, particularly from the Indian subcontinent. However, the resulting acute‐on‐chronic liver failure (ACLF) has not been well characterized and no large studies are available. Our study aimed to evaluate the clinical profile and predictors of 3‐month mortality in patients with this distinctive form of liver failure.
Mechanical modeling of a single-walled carbon nanotube using the finite element approach

Summary — An analytical procedure to determine the elastic modulus of a single-walled carbon nanotube of armchair type is presented. The interacting forces between atoms are determined based on potentials derived from quantum mechanics. For the axial stretching, the Morse potential parameters were used, along with the bending potential. The model associates a hexagonal lattice where the nodes correspond to atoms and bars to the links (bonds) between them. The finite element model considers fixed position of one end while the tension forces are applied at the other end. The result of the simulation is the shape of the deformed nanotube and its elastic modulus. The influence of the overall dimensions of the nanotube on the modulus of elasticity was also examined.
The Natural Products in Protection against the most Important Pathological Changes in Human Metabolism

Inflammation in joint : The liberation of phospholipids from cell membranes represents the first step of inflammation cascade. By action of phospholipase A2 is split of the arachidonic acid. Free arachidonic acid is than metabolised by two enzymes: 5-lipooxygenase and 2-cyclooxygenase to generate the group of prostanoids and leukot - rienes which are the first active proinflammation compounds, starting the whole proces of inflammation. We verified, that 27 flavonoids and flavans, contained in American patent Univestin are really able to interrupt this pathway by inhibition both of those enzymes. All these flavonoids are naturally occurring chemicals, which give color to plants and are found in plants, fruits, grains, nuts and vegetables. Theirs antioxidant capacity eliminates the action of Cyt P450 also and prevents to origine of epoxides. Cancerogenesis : Inositolhexaphosphate (IP6) is found in substantial amounts in whole grains, cereals, legumes, nuts and seeds. As well as inositol, IP6 is contained in most mammalian cells, wherein they are important in regulating vital cellular function such as signal transduction, cell proliferation and differentation. Inositol and IP6 are contend in product Inocell and there is additional evidence that inositol alone may further enhance the anti-cancer effect of IP6. Beside decreasing cellular proliferation IP6 also causes differen - tation of malignant cells ofen resulting in a conversion to normal phenotype, what leads to starting of apoptose in those cells. Inocell greatly enhances NK cell activity, regulates cell growth and has very strong antioxidant capacity. The suggestion we can demonstrate on succesfful efects of Inocell in concrete causes of patients with various types of cancerogenesis. Peptic ulcer disease and gastric cancer : The ability of Vaccinium macrocarpon , the North American cranberry, to prevent bacterial adhesion has been used to advantage in the prevention of urinary tract infections and has recently been described for the prevention of adhesion of bacteria responsible for oral infections and stomach ulcers as well in Helicobacter pylori .
Morpheme Segmentation and Concatenation Approaches for Uyghur LVCSR

In this paper, various kinds of sub-word lexica are thoroughly investigated under the framework of Uyghur LVCSR system. Experimental results show that it is inefficient to directly model based on word units or small units like morpheme or even syllable units. It is observed that an optimal sub-word unit set between word and morpheme units can better fit for ASR system. In order to select best unit set we have investigated several effective unit segmentation, concatenation approaches, and their ASR performances. For segmentation approach, we investigate a supervised segmentation which split words into the smallest functional units the linguistic morphemes, and an unsupervised segmentation which extract pseudo-morphemes (or statistical morphemes). In supervised model, a leaning algorithm is trained on a manually prepared training corpus, and morpho-phonetics changes are analyzed. In the unsupervised model, the Morfessor tool is used to extract pseudo-morphemes from a raw text corpus. For concatenation approach, several effective concatenation approaches are investigated based on linguistic morphemes. First is the data-driven approach which concatenates morpheme sequences based on certain measures like co-occurrence frequency or mutual probability. Second is a model based approach which merges units with global statistical criteria. In this study, the Morfessor program is revised and turned into concatenation program by controlling segmentation points. Third is the two-layer-lexica based concatenation approach which extracts an optimal sub-word unit set by aligning and comparing the ASR results of word and morpheme two lexical layers. This method utilizes both speech and text, and produced the best results in terms of WER and lexicon size, and proved to be very stable. The best optimal lexicon, which is obtained totally on the basis of HMM based acoustic model, outperformed all other baseline lexica. And when all these lexica are directly incorporated with a deep neural network (DNN) based acoustic model, without changing the speech and text training corpora and language models, the optimal lexicon not only drastically improved the ASR accuracy but also outperformed other units as a proof of the generality of the two-layer-lexica based approach.
Event-triggered robust H∞ state estimation for T-S fuzzy systems via piecewise Lyapunov functions

This paper is concerned with the design of H∞ event-triggered state estimation for discrete-time T-S fuzzy systems. With the event triggering communication strategy, only the measured outputs of the physical plant that violate a predefined triggering condition will be transmitted in the communication channel. Considering that the implementation of the filter may not be synchronized with the plant trajectories due to the asynchronous premise variables in network environment, a novel observer-based piecewise fuzzy filter is proposed. By applying a piecewise Lyapunov-Krasovskii functional and some techniques on matrix convexification, a method of event-triggered H∞ piecewise filter design is developed for the filtering error system concerned to be asymptotically stable with a given disturbance attenuation level and reduced transmission rate. Moreover, a co-design algorithm to derive the filter gains and the event triggering parameters is proposed.
Eccentric Exercise to Enhance Neuromuscular Control

Context: Neuromuscular alterations are a major causal factor of primary and secondary injuries. Though injury prevention programs have experienced some success, rates of injuries have not declined, and after injury, individuals often return to activity with functionality below clinical recommendations. Considering alternative therapies to the conventional concentric exercise approach, such as one that can target neuromuscular injury risk and postinjury alterations, may provide for more effective injury prevention and rehabilitation protocols. Evidence Acquisition: Peer-reviewed sources available on the Web of Science and MEDLINE databases from 2000 through 2016 were gathered using searches associated with the keywords eccentric exercise, injury prevention, and neuromuscular control. Hypothesis: Eccentric exercise will reduce injury risk by targeting specific neural and morphologic alterations that precipitate neuromuscular dysfunction. Study Design: Clinical review. Level of Evidence: Level 4. Results: Neuromuscular control is influenced by alterations in muscle morphology and neural activity. Eccentric exercise beneficially modifies several underlying factors of muscle morphology (fiber typing, cross-sectional area, working range, and pennation angle), and emerging evidence indicates that eccentric exercise is also beneficial to peripheral and central neural activity (alpha motorneuron recruitment/firing, sarcolemma activity, corticospinal excitability, and brain activation). Conclusion: There is mounting evidence that eccentric exercise is not only a therapeutic intervention influencing muscle morphology but also targets unique alterations in neuromuscular control, influencing injury risk.
Introduction of exogenous DNA into Chlamydomonas reinhardtii by electroporation

The fate of exogenous DNA introduced into Chlamydomonas reinhardtii by electroporation was analyzed. With single and double electrical pulses, plasmids as large as 14 kb were introduced into cells with and without intact cell walls. Within hours after introduction, exogenous plasmid DNA was associated with nuclei isolated from cells; several weeks after introduction, exogenous DNA was stably integrated into the Chlamydomonas genome. These studies establish electroporation as a method for introducing DNA, and potentially other molecules, into C. reinhardtii.
Organizational innovation in a professionally dominated system: responses of physicians to a new program in medical education.

Increasing professionalization of the occupational structure and increasing pressuresfor organizational innovations of various tpes suggest the importance of understanding thefactors influencing variability in the responses of professionals to organizational innovation efforts. This paper reports the results of a study designed to explore this issue in the context of the health care system. Variability in the responses of practicingphysicians to an organizational innovation is examined in light of a number of hypotheses derivedfrom the literature on adoption of innovation. The findings support five of the six hypotheses tested, and suggest that receptivity to organizational innovation in profesionally dominated systems is influenced by factors similar to those in other systems.
Hardware architecture for 2D Gaussian filtering of HD images on resource constrained platforms

A bi-dimensional filter for high accuracy image processing is implemented by using a novel partitioning method. The method is based on a number theory theorem, which permits to reduce the complexity of the operation to that of an adder chain and also the amount of the coefficients stored in memory, improving the memory organization. To show the advantage of such method, we implemented a Floating Point 32 (FP32) in hardware filtering applications and, in particular, for 2D FIR filters. Using Xilinx Virtex 7 Field Programmable Gate Array (FPGA) we obtain a critical path delay of 4.7ns which is comparable with the state-of-art.