Miracle-dz/UniFAR-FTUs huggingface dataset:
SABENÇA - um arcabouço computacional baseado na aprendizagem de ontologias a partir de textos

As pesquisas sobre aprendizagem de ontologias tem sido realizadas em varias areas do conhecimento. A extracao semi-automatica ou automatica de ontologias auxiliaria na aceleracao da estruturacao do conhecimento de diversos dominios. Abordagens semiautomaticas para a aprendizagem de ontologias a partir de textos sao propostas em diversos trabalhos cientificos, em sua maioria, com o apoio de tecnicas de processamento da lingua natural. Este trabalho descreve a construcao de um arcabouco computacional para aprendizagem semi-automatizada de ontologias a partir de textos na lingua portuguesa. Axiomas nao sao tratados neste trabalho. O trabalho desenvolvido aqui originouse da proposta de Philipp Cimiano [18], juntamente com mecanismos de padronizacao de textos, processamento de linguagem natural, identificacao de relacoes taxonomicas e estruturacao de ontologias. Esta pesquisa resultou no desenvolvimento de um conjunto de classes, concretas e abstratas, que compoem um arcabouco computacional. Neste trabalho, tambem foi feito um estudo de caso no dominio de seguranca publica, comprovando os beneficios do arcabouco computacional.
Cluster formation control for multi-agent systems with sampled-data method

This paper consider the cluster formation for multiagent systems with sampled-data method. The control of cluster formation is try to make each group of the agents realize distinct complete formation. For the sake of energy saving, a sampled-data control scheme is constructed for cluster formation. Then a sufficient condition based on linear matrix inequality techniques is given for the cluster formation. Finally, numerical simulations are exploited to show the effectiveness of the given LMI-based condition.
A Compact Symplectic High-Order Scheme for Time-Domain Maxwell's Equations

A fourth-order compact symplectic finite-difference time-domain (CS-FDTD) method for modeling long-range propagation is proposed. Theoretical analyses of numerical stability and dispersion are presented, and the comparisons to Fang's high-order FDTD and symplectic FDTD (S-FDTD) method are provided. One-dimensional (1-D) numerical simulation is performed to investigate the distortion of the long-range pulse propagation. It indicates the improved performance of the CS-FDTD approach compared to the S-FDTD method.
A lexicon of Arabic verbs constructed on the basis of Semitic taxonomy and using finite-state transducers

We describe a lexicon of Arabic verbs constructed on the basis of Semitic patterns and used in a resource-based method of morphological annotation of written Arabic text. The annotated output is a graph of morphemes with accurate linguistic information. An enhanced FST implementation for Semitic languages was created. This system is adapted also for generating inflected forms. The language resources can be easily updated. The lexicon is constituted of 15 400 verbal entries. We propose an inflectional taxonomy that increases the lexicon readability and maintainability for Arabic speakers and lingui sts. Traditional grammar defines inflectional verbal classes by using verbal pattern-classes and root-classes, related to the nature of each of the triliteral root-consonants. Verbal pattern-classes are clearly defined but root-classes are complex. In our taxonomy, traditional pattern-classes are reused and root-classes are simply redefined. Our taxonomy provides a straightforward encoding scheme for inflectional variations and orthographic adjustments due to assimilation and agglutination. We have tested and evaluated our resource against 10 000 diacriticized verb occurrences in the Nemlar corpus and compared it to Buckwalter resources. The lexical coverage is 99.9 % and a laptop needs two minutes in order to generate and compress the inflected lexicon of 2.5 million forms into 4 Megabytes.
Cachexia: prevalence and impact in medicine

Purpose of reviewCachexia is a progressive deterioration of body habitus associated with certain chronic diseases (e.g., cancer, chronic obstructive pulmonary disease, chronic heart failure, and chronic kidney disease). The aim of this article is to describe the prevalence and impact of cachexia (and precachexia) in such patients. Recent findingsOwing to the wide spectrum of clinical presentation and lack of an ‘all-inclusive’ definition, it is difficult to estimate the true prevalence of cachexia. Perhaps 2% of the population suffer from precachexia (characterized by weight loss in association with a chronic disease). The significant increase in obesity of the general population (which can mask significant muscle wasting) confounds such simple estimates of the true prevalence of cachexia. In contrast, a multidimensional characterization of the cachectic state (including weight loss, reduced food intake, and systemic inflammation) may be more meaningful in terms of altered clinical outcomes. Such a multidimensional view of cachexia has been shown to impact on patients' survival and quality of life and therefore constitutes a major public health issue. SummaryThere is a high prevalence of (pre)cachexia in patients with chronic diseases. The cachexia syndrome is probably less frequent but has a significant impact in terms of morbidity and mortality.
Shedding of chlamydiae in relation to titers of serum chlamydiae-specific antibodies and serum concentrations of two acute-phase proteins in cats without conjunctivitis.

OBJECTIVE To investigate shedding of chlamydiae from conjunctiva and genital tracts of cats without clinical signs of conjunctivitis or other infectious disease in relation to their titers of serum antibodies against chlamydiae and to serum amyloid A (SAA) and serum α(1)-acid glycoprotein (AGP) concentrations. ANIMALS 62 healthy cats. PROCEDURES Serum from each cat was analyzed for antibodies against chlamydiae and for SAA and AGP concentrations. Swab samples from the conjunctival sac and genital tract were analyzed with a real-time PCR assay for Chlamydiaceae. RESULTS 4 of 8 of cats with high antibody titers (ie, 1,600) shed chlamydiae, but only from the conjunctiva. Chlamydiae could not be detected in samples from cats with lower antibody titers nor from any genital tract samples. In cats with antibody titers of 1,600, mean ± SD SAA concentration was significantly higher when chlamydiae were detected in conjunctival swab samples (3.9 ± 1.0 mg/L) than when no chlamydiae were detected (1.4 ± 1.0 mg/L). However, SAA concentration was greater than the limit for an acute-phase response in only one of those cats. There was no significant difference in serum AGP concentrations between cats with high titers that were or were not shedding chlamydiae. Nine of 30 (30%) cats (5 with and 4 without detectable serum antibodies against chlamydiae) that had been mated developed reproductive disorders. CONCLUSIONS AND CLINICAL RELEVANCE Clinically normal cats with high chlamydiae-specific antibody titers can shed and thus transmit chlamydiae. Venereal spread from cats without clinical signs of infection is likely not common.
Continued use of a Chinese online portal: an empirical study

The evolution of the internet has made online portals a popular means of surfing the internet. In internet commerce, understanding the post-adoption behaviour of users of online portals can help enterprises to attract new users and retain existing customers. For predicting continued use intentions, this empirical study focused on applying and modifying the diffusion of innovation (DOI) theory to explore the use of a Chinese web portal (Yahoo-Kimo). The empirical results indicate that each of the innovation characteristics (compatibility, relative advantage, complexity and playfulness) significantly affect the continued use intentions of adopters. In determining continued use intentions, males were more influenced by relative advantage than females, while females were more influenced by perceived playfulness than males. Compatibility is the strongest factor to influence both male and female adopters' continued use intentions for online portals.
CCEDAF: Codificador Combinatorio de Estados para el Diseño de Autómatas Finitos

En esta demostracion se presenta el funcionamiento de la herramienta software CCEDAF [1], orientado a alumnos de Laboratorio de Estructura y Tecnologia de Computadores, para facilitarles el diseno de automatas finitos con un menor numero de puertas logicas. La aplicacion CCEDAF (Codificador Combinatorio de Estados para el Diseno de Automatas Finitos) a partir de la tabla de transiciones del sistema digital, asigna todas las posibles combinaciones de codificacion de estados para generar diferentes tablas de excitacion, y obtener aquellas combinaciones que requieran un menor numero de puertas logicas.
Elective single-embryo transfer versus double-embryo transfer in in vitro fertilization.

BACKGROUND The risks of premature birth and perinatal death are increased after in vitro fertilization. These risks are mainly due to the high incidence of multiple births, which relates to the number of embryos transferred. METHODS We performed a randomized, multicenter trial to assess the equivalence of two approaches to in vitro fertilization with respect to the rates of pregnancy that result in at least one live birth and to compare associated rates of multiple gestation. Women less than 36 years of age who had at least two good-quality embryos were randomly assigned either to undergo transfer of a single fresh embryo and, if there was no live birth, subsequent transfer of a single frozen-and-thawed embryo, or to undergo a single transfer of two fresh embryos. Equivalence was defined as a difference of no more than 10 percentage points in the rates of pregnancy resulting in at least one live birth. RESULTS Pregnancy resulting in at least one live birth occurred in 142 of 331 women (42.9 percent) in the double-embryo-transfer group as compared with 128 of 330 women (38.8 percent) in the single-embryo-transfer group (difference, 4.1 percentage points; 95 percent confidence interval, -3.4 to 11.6 percentage points); rates of multiple births were 33.1 percent and 0.8 percent, respectively (P<0.001). These results do not demonstrate equivalence of the two approaches in rates of live births, but they do indicate that any reduction in the rate of live births with the transfer of single embryos is unlikely to exceed 11.6 percentage points. CONCLUSIONS In women under 36 years of age, transferring one fresh embryo and then, if needed, one frozen-and-thawed embryo dramatically reduces the rate of multiple births while achieving a rate of live births that is not substantially lower than the rate that is achievable with a double-embryo transfer.
Comparison of subjective responses to semicircular canal stimulation produced by rotation about different axes.

A procedure has been developed for obtaining reliable measures of sensation associated with semicircular canal stimulation. Theoretically these measures can be used along with measures of nystagmiis to estimate several vestibular response system parameters. In this experiment, responses produced by stimulation of the horizontal semicircular canals are compared with those produced by stimulation of the vertical canals. Group mean estimates of subjective angular displacement obtained from forty US Navy flight students were approximately accurate for stimulation of both horizontal and vertical canals. Significant individual differences were found within the group. From the responses obtained, mean estimates of vestibular system parameters were calculated. The method appears to be a practical means of measuring the K. (θ/Δ) parameter which has not been assessed in the past due to lack of a suitable method.
High frequency modelling of cables in PWM motor drives by using polynomial functions based parameters

The high frequency behaviour of the cables in pulse width modulation (PWM) motor drives is of a crucial importance in the analysis of transient overvoltages and conducted electromagnetic interference (EMI) propagation, both common and differential mode. In order to give a tool for simulation of the above cited phenomena, a new method for high frequency cable modelling is proposed in this paper. The method is based on the measurement of the impedance frequency responses of the cables in short and open circuit conditions. The lumped parameters cable behaviour is described by polynomial functions in frequency domain. For a given frequency a simple equivalent circuit representation of the cable is obtained. The proposed model is easily implemented in Matlab/Simulink and it is validated comparing the computed frequency impedance responses of the cable, loaded by either a resistive load or an induction motor, to the corresponding measured ones. Moreover, the prediction, by the model, of the overvoltage at the motor terminals in a long-cable PWM drive is performed. The proposed model are also compared with some commonly used high frequency cable models presented in technical literature.
Localized mutagenesis with bacteriophage Mu: method for increasing the frequency of specific bacterial mutants

A method is described for markedly enriching a bacterial population for cells containing any given Mu insertion mutation. The method involves the transfer of a small piece of deoxyribonucleic acid from a Mu-infected Hfr donor donor strain to a suitable F- strain and a subsequent selection of those recombinant organisms that have received a Mu prophage from the donor. The method is particularly usefule for isolating mutants whose selection requires "brute-force" assay, since only a few hundred colonies have to be screened.
Votter Corpus: A Corpus of Social Polling Language

The Votter Corpus is a new annotated corpus of social polling questions and answers. The Votter Corpus is novel in its use of the mobile application format and novel in its coverage of specific demographics. With over 26,000 polls and close to 1 millions votes, the Votter Corpus covers everyday question and answer language, primarily for users who are female and between the ages of 13-24. The corpus is annotated by topic and by popularity of particular answers. The corpus contains many unique characteristics such as emoticons, common mobile misspellings, and images associated with many of the questions. The corpus is a collection of questions and answers from The Votter App on the Android operating system. Data is created solely on this mobile platform which differs from most social media corpora. The Votter Corpus is being made available online in XML format for research and non-commercial use. The Votter android app can be downloaded for free in most android app stores.
Evidence for a cholinergic inhibitory feed‐back mechanism in the rabbit retina.

The effects of muscarine, atropine and nicotinic antagonists on the light‐evoked release of radioactivity from rabbit retinas previously exposed to [3H]choline (Ch) was studied. On the basis of previous experiments, this light‐evoked release of total radioactivity was taken as a measure of the light‐evoked release of [3H]acetylcholine (ACh) from the cholinergic amacrine cells. Atropine (1 microM) in the presence, but not the absence, of eserine more than doubled the light‐evoked release of [3H]ACh. Eserine (30 microM) itself had no significant effect on either the spontaneous resting release or the light‐evoked release of [3H]ACh. Muscarine (10 microM) in the presence or absence of eserine reduced the light‐evoked release of [3H]ACh from the retina by 50%. This effect of muscarine was blocked by atropine used in the absence of eserine. The nicotinic antagonists pempidine, hexamethonium and gallamine had no significant effect on retinal [3H]ACh release. Strychnine (20 microM), which alone had no effect on retinal [3H]ACh release, abolished the effects of both muscarine and atropine on the light‐evoked release of [3H]ACh. Bicuculline (5 microM) did not affect the actions of muscarine or atropine on the light‐evoked release of [3H]ACh. Previous experiments had shown that glycine and gamma‐aminobutyric acid (GABA) reduce the light‐evoked release of [3H]ACh from the retina and that these inhibitory effects are selectively blocked by strychnine (20 microM) and bicuculline (5 microM) respectively. These results suggest the presence in the retina of a cholinergic inhibitory feed‐back mechanism which involves a neuronal loop, rather than presynaptic or post‐synaptic inhibitory muscarinic receptors on the cholinergic amacrine cells themselves. Our experiments do not provide evidence on the nature of the proposed inhibitory loop, except that it apparently includes a glycinergic or taurinergic (amacrine) cell.
Immunosuppression by Murine Sarcoma Virus (Moloney)

Infection of mice with the murine sarcoma virus (Moloney) markedly suppressed the humoral antibody response to sheep erythrocyte antigen injected 10 days after infection, when tumor size was maximal, and on day 26, when primary tumors had partially regressed. Humoral antibody response was also inhibited when antigen was injected at the time secondary tumors and metastases were evident. No significant suppression of humoral antibody was seen when mice were injected with sheep erythrocyte antigen 5 days after virus infection. Inhibition of the cellular immune response of murine sarcoma virus (Moloney)-infected mice, as measured by the increased survival time of skin grafts, was also determined. Mice that were infected 5 days prior to grafting demonstrated prolonged survival of grafts, suggesting a suppression of cellular immunity. These mice had a graft survival time 14 days greater than noninfected controls. No significant prolongation of graft survival was seen in mice grafted at the times of maximum primary tumor growth, of primary tumor regression, or when secondary tumors had appeared.
Valuing volatility spillovers in European stock markets

Allowing for volatility spillovers in covariance forecasts produces small, significant reductions in mean-variance portfolio risk. We demonstrate reductions in the order of 1-1.5% of standard deviation for portfolios of European equities at daily, weekly, and monthly rebalancing horizons. We estimate and forecast the conditional second moment matrix of (synchronized) daily index returns for the London, Frankfurt and Paris stock markets via two asymmetric dynamic conditional correlation models (ADCC): the unrestricted model includes volatility spillover effects and the restricted model does not. We combine covariance forecasts from the restricted and unrestricted models with a wide range of assumed returns relatives via a polar co-ordinates method, and compute out-of-sample realized portfolio returns and variances for testing. Diebold-Mariano tests confirm that risk reductions are significant in most portfolios. Stochastic dominance tests indicate that portfolios accounting for volatility spillover would be preferred by risk averse agents.
Modulation of wound healing after glaucoma surgery

The healing process after glaucoma filtration is the main determinant of surgical failure and, even more important, the final intraocular pressure. The ability to fully control wound healing may ultimately give us the ability to set the intraocular pressure in the low teens for all patients undergoing glaucoma filtration surgery. The authors review the changes in how to use antimetabolites to improve safety, and many of the exciting new areas of progress, including growth factor neutralization and future molecular therapies to control wound healing.
Nuclear receptor liver receptor homologue 1 (LRH-1) regulates pancreatic cancer cell growth and proliferation

An essential regulator of gene transcription, nuclear receptor liver receptor homologue 1 (LRH-1) controls cell differentiation in the developing pancreas and maintains cholesterol homeostasis in adults. Recent genome-wide association studies linked mutations in the LRH-1 gene and its up-stream regulatory regions to development of pancreatic cancer. In this work, we show that LRH-1 transcription is activated up to 30-fold in human pancreatic cancer cells compared to normal pancreatic ductal epithelium. This activation correlates with markedly increased LRH-1 protein expression in human pancreatic ductal adenocarcinomas in vivo. Selective blocking of LRH-1 by receptor specific siRNA significantly inhibits pancreatic cancer cell proliferation in vitro. The inhibition is tracked in part to the attenuation of the receptor’s transcriptional targets controlling cell growth, proliferation, and differentiation. Previously, LRH-1 was shown to contribute to formation of intestinal tumors. This study demonstrates the critical involvement of LRH-1 in development and progression of pancreatic cancer, suggesting the LRH-1 receptor as a plausible therapeutic target for treatment of pancreatic ductal adenocarcinomas.
Análisis de la interacción profesor-alumno al resolver problemas no rutinarios en aulas de primaria

La investigacion educativa ha mostrado que cuando maestro y alumnos resuelven de forma conjunta problemas en el aula, apenas existe razonamiento y el grado de participacion de los alumnos es practicamente inexistente. Es por ello que la presente Tesis Doctoral pretende analizar si la tarea que se realiza en las aulas determina el comportamiento de los docentes, para que estos promuevan mayor razonamiento en las aulas y los alumnos sean mas participativos en la construccion de su propio aprendizaje. Para ello se lleva a cabo dos estudios empiricos con diez maestros y sus alumnos en aulas de Primaria. En el primero se resuelve de forma conjunta un problema con tres apartados diferentes de distintos dominios cognitivos. En el segundo se resuelve un problema no rutinario en el mismo contexto que el del primer estudio. Se analiza las interacciones que surgen en dichas resoluciones segun los procesos que se promueven y el grado de participacion que tienen los alumnos, asi como los perfiles docentes segun diferentes dimensiones que se tendran en cuenta. Los resultados obtenidos muestran que a medida que la complejidad cognitiva de la tarea es superior los procesos cognitivos avanzados, como el razonamiento, y el grado de participacion de los alumnos tambien aumenta. Del mismo modo, en cuanto a los perfiles de los maestros se refiere, los docentes se vuelven menos directos y promueven el razonamiento en mayor medida.
Electrochemical properties of 316L stainless steel with culturing L929 fibroblasts

Potentiodynamic polarization and impedance tests were carried out on 316L stainless steel with culturing murine fibroblast L929 cells to elucidate the corrosion behaviour of 316L steel with L929 cells and to understand the electrochemical interface between 316L steel and cells, respectively. Potential step test was carried out on 316L steel with type I collagen coating and culturing L929 cells to compare the effects of collagen and L929 cells. The open-circuit potential of 316L steel slightly shifted in a negative manner and passive current density increased with cells, indicating a decrease in the protective ability of passive oxide film. The pitting potential decreased with cells, indicating a decrease in the pitting corrosion resistance. In addition, a decrease in diffusivity at the interface was indicated from the decrease in the cathodic current density and the increase in the diffusion resistance parameter in the impedance test. The anodic peak current in the potential step test decreased with cells and collagen. Consequently, the corrosion resistance of 316L steel decreases with L929 cells. In addition, collagen coating would provide an environment for anodic reaction similar to that with culturing cells.