Miracle-dz/UniFAR-FTUs huggingface dataset:
Multiscale principal component analysis to predict atrial fibrillation reversion to sinus rhythm

The objective of this study was to evaluate potential of Multiscale principal Analysis (MSPCA) to extract information of atrial electrograms as predictors of atrial fibrillation (AF) recurrence after ablation. Database is composed of intra-atrial recordings from 43 AF patients that were registered previous to an ablation procedure. MSPCA was applied to each atrium and main frequency and entropy were determined. We could find differences in main frequency in the left atrium between patients from both groups. Moreover, patients that maintenance sinus rhythm group showed a dominant atrial frequency trend from right to left atrium. In addition, non-recurrent AF group showed an enhancement of differences of regularity between both atria. These differences show the efficiency of MSPCA to characterize cardiac dynamic. High frequency values and not differences in main atrial frequency along the right atrium may indicate that AF reversion to sinus rhythm is more difficult.
Tristetraprolin induces cell cycle arrest in breast tumor cells through targeting AP-1/c-Jun and NF-κB pathway

The main characteristic of cancers, including breast cancer, is the ability of cancer cells to proliferate uncontrollably. However, the underlying mechanisms of cancer cell proliferation, especially those regulated by the RNA binding protein tristetraprolin (TTP), are not completely understood. In this study, we found that TTP inhibits cell proliferation in vitro and suppresses tumor growth in vivo through inducing cell cycle arrest at the S phase. Our studies demonstrate that TTP inhibits c-Jun expression through the C-terminal Zn finger and therefore increases Wee1 expression, a regulatory molecule which controls cell cycle transition from the S to the G2 phase. In contrast to the well-known function of TTP in regulating mRNA stability, TTP inhibits c-Jun expression at the level of transcription by selectively blocking NF-κB p65 nuclear translocation. Reconstitution of NF-κB p65 completely abolishes the inhibition of c-Jun transcription by TTP. Moreover, reconstitution of c-Jun in TTP-expressing breast tumor cells diminishes Wee1 overexpression and promotes cell proliferation. Our results indicate that TTP suppresses c-Jun expression that results in Wee1 induction which causes cell cycle arrest at the S phase and inhibition of cell proliferation. Our study provides a new pathway for TTP function as a tumor suppressor which could be targeted in tumor treatment.
Performance Study of a Selective Encryption Scheme for the Security of Networked, Real-Time Video

Due to their large size, video images present a great challenge to currently available cryptographic algorithms; the computationally intensive processes of encryption and decryption of video images, introduce delays that are beyond acceptable realtime video application limits. In this paper, the Aegis mechanism is proposed. Aegis limits the amount of data to be encrypted or decrypted by using video compression to reduce the size of transmitted video images. The performance of Aegis (utilizing MPEG video compression across an ATM network) is explored through an extensive simulation study. Three types of video traffic: CATV, Stu&o TV, and video conference are considered. Our simulation results demonstrate the delay performance, as well as, the queue requirements for the Aegis encryption scheme versus the full encryption and no encryption schemes.
The metallicity gradient as a tracer of history and structure: the Magellanic Clouds and M33 galaxies

Context. The stellar metallicity and its gradient place constraints on the formation and evolution of galaxies. Aims. This is a study of the metallicity gradient of the LMC, SMC and M33 galaxies derived from their asymptotic giant branch (AGB) stars. Methods. The [Fe/H] abundance was derived from the ratio between C- and M-type AGB stars and its variation analysed as a function of galactocentric distance. Galaxy structure parameters were adopted from the literature. Results. The metallicity of the LMC decreases linearly as −0.047± 0.003 dex kpc −1 out to ∼8 kpc from the centre. In the SMC, [Fe/H] has a constant value of ∼−1.25 ± 0.01 dex up to ∼12 kpc. The gradient of the M33 disc, until ∼9 kpc, is −0.078 ± 0.003 dex kpc −1 while the outer disc/halo, out to ∼25 kpc, has [Fe/H] ∼− 1. 7d ex. Conclusions. The metallicity of the LMC, as traced by different populations, bears the signature of two major star forming episodes: the first one constituting a thick disc/halo population and the second one a thin disc and bar due to a close encounter with the Milky Way and SMC. The [Fe/H] of the recent episode supports an LMC origin for the Stream. The metallicity of the SMC supports star formation, ∼3 Gyr ago, as triggered by LMC interaction and sustained by the bar in the outer region of the galaxy. The SMC [Fe/H] agrees with the present-day abundance in the Bridge and shows no significant gradient. The metallicity of M33 supports an “insideout” disc formation via accretion of metal poor gas from the interstellar medium.
Interaction of bluetongue virus with bovine lymphocytes.

Freshly isolated, and established, cultures of bovine peripheral blood mononuclear leukocytes (PBMLs) were exposed to bluetongue virus (BTV) for the purpose of defining potential lymphotropism. PBML cultures were established in the presence of interleukin 2 (IL-2) and mitogen and maintained either as bulk culture or were cloned prior to infectivity studies. All cultures appeared to be of the T cell phenotype based on the following characteristics: binding of T lymphocyte-specific lectins (i.e. peanut agglutinin and Helix pomatia), rosetting of sheep erythrocytes, binding of a putative pan-T monoclonal antibody, and absence of surface immunoglobulin (Ig). T lymphocyte cultures were further characterized by their ability to elicit lectin-dependent cellular cytotoxicity (LDCC). Exposure of established lymphocyte cultures to BTV resulted in productive cytopathic and non-cytopathic infections. Non-cytopathic productive infections were observed in LDCC-negative cultures whereas cytopathic and non-cytopathic infections were observed in LDCC-positive cultures. Exposure of freshly isolated PBMLs to BTV resulted in minimal virus replication; addition of mitogen and IL-2 to such cultures did not augment virus replication. Addition of mitogen and IL-2 induced negligible blast transformation, whereas PBML viability was minimally affected. These studies establish a tropism of BTV for bovine T lymphocytes with virus replication being limited to those cells undergoing blastogenesis. Establishment of infected lymphocyte cultures, without loss of culture viability, suggest such an interaction may contribute to the long term viraemias associated with BTV infection of cattle.
Design and control of synchronous reluctances motors for electric traction vehicle

The paper present the analysis of the performances of an electrical machine used for electric traction in automotive application. The electrical machine under study in this paper is a flux synchronous reluctance machine (SynRM) with 4 poles and 27 slots. The study design requires some analytical analysis in SPEED program, followed by a numerical one in order to obtain the performances of the proposed machine. The control strategy of this machine was also presented.
Relative ampleness in rigid geometry

Nous developpons une theorie analytique rigide de l'amplitude relative pour les fibres en droites et notons quelques applications a la descente fidelement plate de morphismes et d'objets geometriques propres. Nous utilisons la definition fibree, mais nous ne pouvons pas appliquer les arguments ponctuels des cas algebrique et analytique complexe. Nous devons donc utiliser des proprietes cohomologiques des schemas formels sur les anneaux locaux completes des espaces rigides. Nous introduisons une notion analytique de quasi-coherence pour retrouver un objet a partir des sections d'un fibre ample par une construction Proj convenable. Nous etudions le lien d'amplitude relative et le comportement de l'amplitude relative par rapport a l'analytification et a l'extension du corps de base arbitraire. En particulier, nous obtenons une demonstration nouvelle rapide du theoreme GAGA relatif sur les affinoides.
Peripersonal Space and Margin of Safety around the Body: Learning Visuo-Tactile Associations in a Humanoid Robot with Artificial Skin

This paper investigates a biologically motivated model of peripersonal space through its implementation on a humanoid robot. Guided by the present understanding of the neurophysiology of the fronto-parietal system, we developed a computational model inspired by the receptive fields of polymodal neurons identified, for example, in brain areas F4 and VIP. The experiments on the iCub humanoid robot show that the peripersonal space representation i) can be learned efficiently and in real-time via a simple interaction with the robot, ii) can lead to the generation of behaviors like avoidance and reaching, and iii) can contribute to the understanding the biological principle of motor equivalence. More specifically, with respect to i) the present model contributes to hypothesizing a learning mechanisms for peripersonal space. In relation to point ii) we show how a relatively simple controller can exploit the learned receptive fields to generate either avoidance or reaching of an incoming stimulus and for iii) we show how the robot can select arbitrary body parts as the controlled end-point of an avoidance or reaching movement.
Analysis of weight initialization methods for gradient descent with momentum

The back propagation algorithm using gradient descent with momentum is a commonly used training algorithm for the artificial neural networks. In this work, a set of experiments were conducted to obtain a detailed comparison of various known weight initialization methods. By doing so, the best suited weight initialization routines for the gradient descent approach with momentum was identified. Six problems of the functions approximation domain were selected for these experiments. Statistical metrics like one sided tailed t-test, the standard deviation of simulation error as well as its mean value were evaluated and used for the purpose of decision making. Results obtained from these experiments strongly advocate that the weight initialization method proposed by Nguyen and Widrow was the best suited technique while training the network by Gradient Descent with momentum approach.
Efficacy of Thai Herbal Shampoos from Averrhoa carambola L., Hibiscus sabdariffa L. and Passiflora edulis Sims. for Controlling Head Lice, Pediculus humanus capitis (De Geer)

Pediculosis is an infestation of the scalp caused by head lice, Pediculus humanus capitis (De Geer), which affects important public health in schoolchildren. Nowadays, head lice resistant to chemical pediculicide are increasing, thus alternative products from herbal shampoos or herbal cream are needed for head lice control. This study aimed to determine the efficacies of Thai herbal shampoos made from fruits of Averrhoa carambola L. (A. carambola), Hibiscus sabdariffa L. (H. sabdariffa) and Passiflora edulis Sims. (P. edulis) on mortality of head lice, at 1, 5 and 10 ml/plate by filter paper contact bioassay in vitro test and in vivo test, several infested children were treated with each shampoo and make a comparison between them and a chemical shampoo, carbaryl, by in vitro and in vivo tests. Every treatment was repeated three times. The in vitro results showed that the 5 and 10 ml/plate doses of P. edulis and H. sabdariffa shampoos exhibited the highest efficacy as pediculicide against nymphs with an LC50 of 0.85 ml/plate and LT50 between <0.1 to 0.20, and <0.1 to 0.47 min, respectively. LC50 of P. edulis and H. sabdariffa shampoos against adults were 0.85 and 1.09 ml/plate, respectively, and LT50 was between <0.1 to 0.83 min. From the in vivo test, P. edulis shampoo was found to be the most effective in controlling head lice with 100% cure rate after the 2 nd treatment. It was more effective than carbaryl.In conclusion, P. edulis shampoo is an effective alternative as pediculicide for head lice treatment because it is safe: no side effects on the scalp of the subjects were observed.
Religious/Secular Distance: How Far Apart Are Teenagers and Their Parents?

Prior research exploring differences in religiousness (and/or secularity) between parents and their teenage children suggests that there are not substantial differences, with differences increasing during emerging adulthood. However, previous efforts to examine differences in religiousness between parents and their teenage children have relied upon single-item measures, have used self-reported differences, or have only asked either the child or the parent but not both to evaluate religious distance. In this study we use a robust scale measure to calculate the religious distance between parents and children in an upper-middle class high school in New York state (students n = 196; parents/caretakers n = 328). We find that teenage children in our sample are, on average, about 12% less religious (or more secular) than their fathers and about 17% less religious (or more secular) than their mothers. Our study improves upon measures of religious distance between parents and teenage children and provides support for recent research suggesting that the transmission of religiousness from parents to children can function as a mechanism of secularization.
Glauber dynamics on nonamenable graphs: boundary conditions and mixing time

We study the stochastic Ising model on finite graphs with n vertices and bounded degree and analyze the effect of boundary conditions on the mixing time. We show that for all low enough temperatures, the spectral gap of the dynamics with (+)-boundary condition on a class of nonamenable graphs, is strictly positive uniformly in n. This implies that the mixing time grows at most linearly in n. The class of graphs we consider includes hyperbolic graphs with sufficiently high degree, where the best upper bound on the mixing time of the free boundary dynamics is polynomial in n, with exponent growing with the inverse temperature. In addition, we construct a graph in this class, for which the mixing time in the free boundary case is exponentially large in n. This provides a first example where the mixing time jumps from exponential to linear in n while passing from free to (+)-boundary condition. These results extend the analysis of Martinelli, Sinclair and Weitz to a wider class of nonamenable graphs.
Local Estimation of a Biometric Function with Covariate Effects

In the analysis of life tables one biometric function of interest is the life expectancy at age t, e(t) = E(T ? t jT > t). In this paper e(t) is extended to a regression model { proportional mean residual life regression model with both censoring and explanatory variables. The model usually assumes that the covariate has a log-linear eeect on the mean residual life. We consider the proportional mean residual life regression model with a nonparametric risk eeect and we discuss estimation of the risk function and its derivatives for two types of baseline mean residual life: parametrized and non-parametrized. In parametric baseline mean residual life case, inference is based on a local likelihood function, while in a nonparametric baseline mean residual life case, we propose a simple approach based on the exponential regression idea to nd estimator. This simple method makes the implementation easier. Finally, the consistency and asymptotic normality of the resulting estimators are established. A simulation study is presented to illustrate the estimation procedures.
Comprehensive study on effectiveness of various Channel Equalization techniques in retrieval of audio signal over a noisy environment

In this paper, an effort has been made to make a performance simulative study on judging the robustness of various channel equalization techniques on transmission of audio signal in a noisy SISO channel. Three channel equalization techniques such as Ideal Inverse Channel Filtering, Tikhonov Regularization based Wiener Equalization and Blind Equalization Using Channel Input Power Spectrum have been implemented. With consideration of time varying characteristics of both input signal and the channel in MATLAB based simulation study, it has been explored that the Tikhonov Regularization aided Wiener Equalization scheme is very much effective to retrieve A/D converted audio signal in spite of signal distortion incurred by the channel and noise contamination
Looking backward through the looking glass: Reference groups and social comparison

Abstract Scholars often assume that reference groups are industry-wide, homogeneous, and stable. We examine this assumption and suggest hypotheses based on managers’ motivations such as self-enhancement and self-improvement, social identity, and affiliation-based impression management. We test hypotheses on failure-induced changes in reference groups and their direction in terms of upward and downward comparisons. An empirical examination of changes in reference groups for firms listed on the Dow Jones Industrial Average Index between 1993 and 2008 shows that performance below social aspirations induces changes in reference groups and toward upward comparisons. The results indicate that managers can choose to change the reference group – a cognition-centered response – as an alternative to such action-centered responses as organizational search and risk-taking in response to poor performance from social aspirations and that upward comparisons may be the result of social performance shortfalls to give a better impression and to improve firm performance.
Adherence to the healthy Nordic food index, dietary composition, and lifestyle among Swedish women

Background Studies examining diet scores in relation to health outcomes are gaining ground. Thus, control for dietary factors not part of the score, and lifestyle associated with adherence, is required to allow for a causal interpretation of studies on diet scores and health outcomes. Objective The study objective is to describe and investigate dietary composition, micronutrient density, lifestyle, socioeconomic factors, and adherence to the Nordic Nutrition Recommendations across groups defined by their level of adherence to a healthy Nordic food index (HNFI). The paper examines both dietary components included in the HNFI as well as dietary components, which are not part of the HNFI, to get a broad picture of the diet. Design The study is cross-sectional and conducted in the Swedish Women's Lifestyle and Health cohort. We included 45,277 women, aged 29–49 years at baseline (1991–1992). The HNFI was defined by six items: wholegrain bread, oatmeal, apples/pears, cabbages, root vegetables and fish/shellfish, using data from a food frequency questionnaire. Proportions, means and standard deviations were calculated in the entire cohort and by adherence groups. Results Women scoring high on the HNFI had a higher energy intake, compared to low adherers. They had a higher intake of fiber and a higher micronutrient density (components of the HNFI), but also a higher intake of items not included in the HNFI: red/processed meats, sweets, and potatoes. They were on average more physically active and less likely to smoke. Conclusions Adherence to the HNFI was associated with a generally healthier lifestyle and a high intake of health-beneficial components. However, it was also associated with a higher energy intake and a higher intake of foods without proven health benefits. Therefore, future studies on the HNFI and health outcomes should take into account potential confounding of dietary and lifestyle factors associated with the HNFI.
Aproximación a Visión de Anáhuac de Alfonso Reyes desde la teoría de la argumentación

Reception: November 2, 2016 Accepted: January 26, 2017 Vision of Anahuac is both the author’s reaction to a certain historical circumstance and a reflection on the question of what America is from a literary perspective which includes the following discursive strategies: epigraphs, intertextuality and rhetoric. A complex argumentative process backs up the thesis that Americans of all times are united by the desire to tame nature, and the everyday excitement they experience in the face of it. That is to say, the realms of action and contemplation bind together American history. The current importance of Reyes’ essay lies in that it seeks to persuade to a particular point of view: there is a need to highlight everything that aims to value and defend —or on the other hand, destroy— cultural diversity and natural richness.
Learning Rhythm And Melody Features With Deep Belief Networks

Deep learning techniques provide powerful methods for the development of deep structured projections connecting multiple domains of data. But the fine-tuning of such networks for supervised problems is challenging, and many current approaches are therefore heavily reliant on pretraining, which consists of unsupervised processing on the input observation data. In previous work, we have investigated using magnitude spectra as the network observations, finding reasonable improvements over standard acoustic representations. However, in necessarily supervised problems such as music emotion recognition, there is no guarantee that the starting points for optimization are anywhere near optimal, as emotion is unlikely to be the most dominant aspect of the data. In this new work, we develop input representations using harmonic/percussive source separation designed to inform rhythm and melodic contour. These representations are beat synchronous, providing an event-driven representation, and potentially the ability to learn emotion informative representations from pre-training alone. In order to provide a large dataset for our pre-training experiments, we select a subset of 50,000 songs from the Million Song Dataset, and employ their 3060 second preview clips from 7digital to compute our custom feature representations.
NON-EMPTINESS OF MODULI SPACES OF COHERENT SYSTEMS

Let X be a general smooth projective algebraic curve of genus g ≥ 2 over ℂ. We prove that the moduli space G(α:n,d,k) of α-stable coherent systems of type (n,d,k) over X is empty if k > n and the Brill–Noether number β := β(n,d,n + 1) = β(1,d,n + 1) = g - (n + 1)(n - d + g) 0, G(α : n,d,k) ≠ ∅ then G(α : n,d,k) ≠ ∅ for all α > 0 and G(α : n,d,k) = G(α′ : n,d,k) for all α,α′ > 0 and the generic element is generated. In particular, G(α : n,d,n + 1) ≠ ∅ if 0 ≤ β ≤ g and α > 0. Moreover, if β > 0 G(α : n,d,n + 1) is smooth and irreducible of dimension β(1,d,n + 1). We define a dual span of a generically generated coherent system. We assume d 0, G(α : n1,d, n1 + n2) ≠ ∅ if and only if G(α : n2,d, n1 + n2) ≠ ∅. For g = 2, we describe G(α : 2,d,k) for k > n.
Information Asymmetry in Pricing of Credit Derivatives

We study the pricing of credit derivatives with asymmetric information. The managers have complete information on the value process of the firm and on the default threshold, while the investors on the market have only partial observations, especially about the default threshold. Different information structures are distinguished using the framework of enlargement of filtrations. We specify risk neutral probabilities and we evaluate default sensitive contingent claims in these cases.