Miracle-dz/UniFAR-FTUs huggingface dataset:
CMUQ@Qatar:Using Rich Lexical Features for Sentiment Analysis on Twitter

In this paper, we describe our system for the Sentiment Analysis of Twitter shared task in SemEval 2014. Our system uses an SVM classifier along with rich set of lexical features to detect the sentiment of a phrase within a tweet (Task-A) and also the sentiment of the whole tweet (TaskB). We start from the lexical features that were used in the 2013 shared tasks, we enhance the underlying lexicon and also introduce new features. We focus our feature engineering effort mainly on TaskA. Moreover, we adapt our initial framework and introduce new features for TaskB. Our system reaches weighted score of 87.11% in Task-A and 64.52% in Task-B. This places us in the 4th rank in the TaskA and 15th in the Task-B.
Recursive soft margin subspace learning

In this paper, we propose a recursive soft margin (RSM) subspace learning framework for dimension reduction of high-dimensional data, which has strong recognition ability. RSM is motivated by the soft margin criterion of support vector machines (SVMs), which allows some training samples to be misclassified for a certain cost to achieve higher recognition results. Instead of maximizing the sum of squares of Euclidean interclass (called intracluster in unsupervised learning) pairwise distances over all the similar points in previous work, RSM seeks to maximize every pairwise interclass distance between two similar points, and this distance is represented in absolute. Then, we introduce a symmetrical Hingle loss function into the RSM framework. Doing so is to allow some pairwise interclass distances to violate the maximization constraint, such that we can get satisfactory classification performance by losing some training performance. To find multiple projection vectors, a recursive procedure is designed. Our framework is illustrated with Graph Embedding (GE). For any dimension reduction method expressible by the GE, it can thus be generalized by the proposed framework to boost their recognition power by reformulating the original problems.
Opinions From Others Like You: The Role of Perceived Source Similarity

A theoretical framework is proposed to test the influence of opinions of other consumers, based on perceived similarity, in two contexts. The perceived similarity of the source may be diagnostic for consumers who are concerned about mispurchase. Experiment 1, therefore, compared the effects of ads featuring a consumer versus an expert as an endorser, with participant use status as a moderator that may affect concerns about mispurchase. Potential product users rated the consumer endorser higher on perceived similarity, which increased ad credibility and resulted in better ad and brand attitudes. Experiment 2 compared the effects of information about a product delivered on a consumer blog with that of information from the advertiser's official Web site, with concern about mispurchase as a moderator. More concerned consumers rated the blogger higher than the advertiser on perceived similarity, leading to greater information credibility and more favorable attitudes toward the blog and the product.
Viewing restorative approaches to addressing challenging behaviour of minority ethnic students through a community of practice lens

The disproportionately high rates of school exclusion and lower levels of academic achievement of students from particular minority ethnic groups have been a focus of investigation in educational research across the world for some time. This articles uses a communities of practice framework to examine how restorative practice can draw on family and community values to support students whose behaviour is unacceptable in schools to recognize their own agency in behaving for good or ill and reintegrate them into the school community. At the same time, it acknowledges hurt that may be done to victims of wrong-doing and emphasizes putting things right between all those affected. The examples here are from Aotearoa New Zealand. They relate to practices influenced by traditional Māori cultural values. However, the principles and process associated with restorative practices that aim to restore harmony between the individual, the victim and the collective rather than to punish and exclude may be relevant within other student groups where high rates of exclusion from school are problematic.
Dynamic audit services for integrity verification of outsourced storages in clouds

In this paper, we propose a dynamic audit service for verifying the integrity of an untrusted and outsourced storage. Our audit service is constructed based on the techniques, fragment structure, random sampling and index-hash table, supporting provable updates to outsourced data, and timely abnormal detection. In addition, we propose a probabilistic query and periodic verification for improving the performance of audit services. Our experimental results not only validate the effectiveness of our approaches, but also show our audit system verifies the integrity with lower computation overhead, requiring less extra storage for audit metadata.
The Pathogenesis of Gastrointestinal Bacterial Overgrowth

The normal indigenous intestinal microflora consists of about 1015 bacteria that under physiological conditions reside mainly in the lower gastrointestinal tract. Bacterial overgrowth implies abnormal bacterial colonization of the upper gut, resulting from failure of specific defense mechanisms restricting colonization under physiological conditions. At present two types of bacterial overgrowth with defined pathogenesis can be distinguished: (1) gastric overgrowth with upper respiratory tract microflora resulting from selective failure of the gastric acid barrier, and (2) gastrointestinal overgrowth with Gram-negative bacilli (enteric bacteria) resulting from failure of intestinal clearance. Helicobacter pylori-induced gastritis of the oxyntic mucosa is the main cause of acquired failure of the gastric acid barrier, which is common among the healthy elderly. Intestinal clearance may fail as the result of impaired intestinal peristalsis or anatomical abnormalities that alter luminal flow. Impaired peristalsis is associated with conditions interfering with intestinal neuromuscular function including myopathic, neuropathic, autoimmune, infectious, inflammatory, metabolic, endocrine, and neoplastic diseases. Anatomical abnormalities are mainly the result of gastrointestinal surgery, intestinal diverticula or fistula. Combined failure of intestinal clearance and the gastric acid barrier results in more severe colonization with Gram-negative bacilli. Gram-negative bacilli are uncommon in the upper gut of otherwise healthy individuals with gastric hypochlorhydria, being acquired (H. pylori) or drug-induced. Significant bacterial overgrowth with Gram-negative bacilli is a rational in the search for an explanation to optimize clinical management. The clinical significance of colonization with upper respiratory tract microflora remains unclear. Translocation of live bacteria, their metabolic products, or antigens from a small bowel colonized by Gram-negative bacilli play a role in the pathogenesis of spontaneous bacterial peritonitis in hepatic disease and in certain types of sepsis, indicating that further studies can point to new patient populations with potential benefit from medical treatment.
The F Word: College Students’ Definitions of a Feminist

Research indicates that most people espouse feminist ideologies, yet very few self-identify as feminists. This article examines the discrepancy between agreement with feminist principles and lack of identification with feminism by analyzing 270 female and male college students’ definitions of feminists. We explored similarities and differences in definitions provided by self-identified feminists and nonfeminists. The results indicate that feminists and nonfeminists are equally likely to define a feminist as one who actively promotes gender equality in society and, less commonly, rejects traditional gender roles and burns bras. Feminists were more likely to define a feminist as one who supports gender equality, is female, and has positive personal characteristics. Nonfeminists were more likely to define a feminist as one who supports female superiority, dislikes men, discriminates based on gender, has negative personal characteristics, and is lesbian or butch. These results are discussed in the broader contexts of feminist identity and movement mobilization.
Role of the sar locus of Staphylococcus aureus in induction of endocarditis in rabbits

A regulatory locus on the Staphylococcus aureus chromosome, designated sar, is involved in the expression of cell wall proteins, some of which are potentially important in the pathogenesis of endocarditis. For instance, mutant 11D2 (sar::Tn917LTV1) was found to bind substantially less to matrix proteins (i.e., fibrinogen and fibronectin) than parent strain DB. Remarkably, these two strains did not differ in other phenotypes considered important in the initiation of endocarditis (e.g., binding to platelets and resistance to platelet-derived microbicidal proteins). The isogenic pair were compared for pathogenicity in a rabbit endocarditis model. There were significant differences in infectivity rates between the two strains (71 and 88% for DB versus 17 and 42% for mutant 11D2 at inocula of 10(3) and 10(4) CFU, respectively). In early adherence studies, parent DB adhered substantially better than the mutant to valvular vegetations at an inoculum of 10(6) CFU (P = 0.05). Southern blot analysis of colonies indicated that the location of the Tn917LTV1 insert in mutant 11D2 remained stable after animal passage. In vitro adherence assays revealed that mutant 11D2 was less adherent to cultured human endothelium than parent DB. These studies suggest that the sar locus is involved in the initial adherence of S. aureus to the fibrin-platelet-endothelium matrix on damaged valvular endothelium.
Geographcall Nformed Inter-dom-ain Routing

In this paper we propose a new routing protocol and address scheme, Geographically Informed Inter-Domain Routing (GIRO). GIRO departs from previous geographic addressing proposals in that it uses geographic information to assist, not to replace, the provider-based IP address allocation and policybased routing. We show that, by incorporating geographic information into the IP address structure, GIRO can significantly improve the scalability and performance of the global Internet routing system. Within the routing policy constraints, geographic information enables the selection of shortest available routing paths. We evaluate GIRO's performance through simulations using a Rocketfuel-measured Internet topology. Our results show that, compared to the current practice, GIRO can reduce the geographic distance for 70% of the existing BGP paths, and the reduction is more than 40% for about 20% of the paths. Furthermore, encoding geographic information into IP addresses also enables GIRO to apply geographical route aggregation, and a combination of geographic and topological aggregation can lead to 75% reduction of the current BGP routing table size.
Reliability of Early Fetal Echocardiography for Congenital Heart Disease Detection: A Preliminary Experience and Outcome Analysis of 102 Fetuses to Demonstrate the Value of a Clinical Flow-Chart Designed for At-Risk Pregnancy Management

Early fetal echocardiography (EFEC) is a fetal cardiac ultrasound analysis performed between the 12th and 16th week of pregnancy (compared with the usual 18-22 weeks). In the last 10 years, the introduction of “aneuploidy sonographic markers” in screening for cardiac defects has led to a shift from late second to end of the first trimester or beginning of the second trimester of pregnancy for specialist fetal echocardiography. In this prospective study, early obstetric screening was performed between January 2014 and October 2015, using “aneuploidy sonographic markers” following SIEOG Guidelines 2014. These parameters were then collected and strategically combined in an evaluation score to select the group of pregnancies for performing EFEC, in accordance with the American Society of Echocardiography guidelines for fetal Echocardiography. All second-level examinations were performed transabdominally using a 3D convex volumetric probe with frequency range of 4-8 MHz (Accuvix – Samsung). The outcome data included transabdominal fetal echocardiography from 18 weeks to term and after birth. Overall, 99 pregnant women in the first trimester underwent EFEC (95 singleton and 4 twin pregnancies). Specifically, 30 fetuses were evaluated for extra-cardiac anomalies evidenced by obstetric screening (30%), 25 for family history of congenital heart diseases (25%), 8 for family history of genetic-linked diseases (8%), 4 for heart diseases suspected by obstetric screening (4%) and 19 by normal screening (19%). Was detected 11 (10.7%) CHD, when EFEC detected CHD, were compared to those performed later in pregnancy (18 weeks GA-term), a high degree of diagnosis correspondence was evidenced. The higher sensitivity value of EFEC vs late-FE, in comparison with the post-natal value, coupled with the high EFEC specificity shown vs both the end points, enabled us to consider it as a really reliable diagnostic technology, at least in perienced hands. The introduction of a key combination of the more sensitive obstetric and cardiologic variables should facilitate the formulation of a possible flow-chart as a guide for CHD at-risk pregnancies.
Global Relationship between Anatomical Connectivity and Activity Propagation in the Cerebral Cortex

Anatomical connectivity is a prerequisite for cooperative interactions between cortical areas, but it has yet to be demonstrated that association ¢bre networks determine the macroscopical £ow of activity in the cerebral cortex. To test this notion, we constructed a large-scale model of cortical areas whose intercon-nections were based on published anatomical data from tracing studies. Using this model we simulated the propagation of activity in response to activation of individual cortical areas and compared the resulting topographic activation patterns to electrophysiological observations on the global spread of epileptic activity following intracortical stimulation. Here we show that a neural network with connec-tivity derived from experimental data reproduces cortical propagation of activity signi¢cantly better than networks with di¡erent types of neighbourhood-based connectivity or random connections. Our results indicate that association ¢bres and their relative connection strengths are useful predictors of global topo-graphic activation patterns in the cerebral cortex. This global structure^function relationship may open a door to explicit interpretation of cortical activation data in terms of underlying anatomical connectivity.
Meta-analysis of univariate P-values

ABSTRACT We propose a new meta-analysis method to pool univariate p-values across independent studies and we compare our method with that of Fisher, Stouffer, and George through simulations and identify sub-spaces where each of these methods are optimal and propose a strategy to choose the best meta-analysis method under different sub-spaces. We compare these meta-analysis approaches using p-values from periodicity tests of 4,940 S. Pombe genes from 10 independent time-course experiments and show that our new approach ranks the periodic, conserved, and cycling genes much higher, and detects at least as many genes among the top 1,000 genes, compared to other methods.
Reference Signals for Improved Energy Efficiency in LTE

Cellular wireless systems have focused, to date, on system capacity, user data rates, latency and coverage as primary design criteria. Energy efficiency has recently received increased attention as another important criterion to be considered. The potential for energy savings in 3GPP LTE systems has been investigated in [1]-[3]. An important design element that determines the potential for energy efficient transmission is the structure of reference signals that need to be transmitted independent of the load in the network, such as the cell-specific reference signals (CRS) in 3GPP LTE systems. This paper discusses modifications to the reference signal structure in LTE that can enable greater energy efficiency. The time and frequency estimation performance implications of such modifications are evaluated and discussed.
β-Arrestin Regulation of Myosin Light Chain Phosphorylation Promotes AT1aR-mediated Cell Contraction and Migration

Over the last decade, it has been established that G-protein-coupled receptors (GPCRs) signal not only through canonical G-protein-mediated mechanisms, but also through the ubiquitous cellular scaffolds β-arrestin-1 and β-arrestin-2. Previous studies have implicated β-arrestins as regulators of actin reorganization in response to GPCR stimulation while also being required for membrane protrusion events that accompany cellular motility. One of the most critical events in the active movement of cells is the cyclic phosphorylation and activation of myosin light chain (MLC), which is required for cellular contraction and movement. We have identified the myosin light chain phosphatase Targeting Subunit (MYPT-1) as a binding partner of the β-arrestins and found that β-arrestins play a role in regulating the turnover of phosphorylated myosin light chain. In response to stimulation of the angiotensin Type 1a Receptor (AT1aR), MLC phosphorylation is induced quickly and potently. We have found that β-arrestin-2 facilitates dephosphorylation of MLC, while, in a reciprocal fashion, β-arrestin 1 limits dephosphorylation of MLC. Intriguingly, loss of either β-arrestin-1 or 2 blocks phospho-MLC turnover and causes a decrease in the contraction of cells as monitored by atomic force microscopy (AFM). Furthermore, by employing the β-arrestin biased ligand [Sar1,Ile4,Ile8]-Ang, we demonstrate that AT1aR-mediated cellular motility involves a β-arrestin dependent component. This suggests that the reciprocal regulation of MLC phosphorylation status by β-arrestins-1 and 2 causes turnover in the phosphorylation status of MLC that is required for cell contractility and subsequent chemotaxic motility.
Better Metrics to Automatically Predict the Quality of a Text Summary

In this paper we demonstrate a family of metrics for estimating the quality of a text summary relative to one or more human-generated summaries. The improved metrics are based on features automatically computed from the summaries to measure content and linguistic quality. The features are combined using one of three methods—robust regression, non-negative least squares, or canonical correlation, an eigenvalue method. The new metrics significantly outperform the previous standard for automatic text summarization evaluation, ROUGE.
[Comparative efficiency of externally-irrigated cooled-tip catheter vs. 8-mm-tip catheters in radiofrequency (RF) ablation of common atrial flutter].

UNLABELLED Cooled-tip and 8-mm-tip catheters have been found to be more effective than conventional 4-mm-tip catheters for radiofrequency (RF) ablation of common atrial flutter. The aim of this study was retrospective comparison between cooled-tip and and 8-mm-tip catheters in terms of efficacy and safety of RF ablation in atrial flutter. MATERIAL AND METHOD Among 148 consecutive patients (pts) referred for common atrial flutter, cavotricuspid ablation was performed with an externally-irrigated cool tip catheter in 100 pts, and with an 8-mm-tip ablation catheter in 48 patients. RF current was applied for 60 seconds at powers of 50 W with the cooled-tip catheter, and in a temperature-controlled mode (65 degrees C/70 W) with the 8-mm-tip catheter, until bidirectional isthmus block was reached, or a total of 35 unsuccessful RF applications were performed. RESULTS A higher initial failure rate with 8-mm-tip catheters was significant, compared to the externally-irrigated catheter (18% vs 4% ; p < 0.01). Significant differences were also found in some procedure parameters, such as the number of RF applications (26 +/- 8 vs 35 +/- 10; p < 0.04), fluoroscopy time (11 +/- 15 min vs 27 +/- 10 min; p < 0.01) and total procedure duration (95 +/- 23 min vs 145 +/- 35 min; p < 0.09). No major complications occurred. In a mean follow-up of 30 +/- 11 months atrial flutter recurred only in group treated with 8 mm catheter (10 patients among 48). CONCLUSION In achieving cavotricuspid isthmus block, RF ablation performed through cooled-tip catheters is more efficient than application through 8-mm-tip catheters.
The CXCL12–CXCR4 Chemokine Pathway: A Novel Axis Regulates Lymphangiogenesis

Purpose: Lymphangiogenesis, the growth of lymphatic vessels, contributes to lymphatic metastasis. However, the precise mechanism underlying lymphangiogenesis remains poorly understood. This study aimed to examine chemokine/chemokine receptors that directly contribute to chemoattraction of activated lymphatic endothelial cells (LEC) and tumor lymphangiogenesis. Experimental Design: We used quantitative RT-PCR to analyze specifically expressed chemokine receptors in activated LECs upon stimulation of vascular endothelial growth factor-C (VEGF-C). Subsequently, we established in vitro and in vivo models to show lymphangiogenic functions of the chemokine axis. Effects of targeting the chemokine axis on tumor lymphangiogenesis and lymphatic metastasis were determined in an orthotopic breast cancer model. Results: VEGF-C specifically upregulates CXCR4 expression on lymphangiogenic endothelial cells. Moreover, hypoxia-inducible factor-1α (HIF-1α) mediates the CXCR4 expression induced by VEGF-C. Subsequent analyses identify the ligand CXCL12 as a chemoattractant for LECs. CXCL12 induces migration, tubule formation of LECs in vitro, and lymphangiogenesis in vivo. CXCL12 also stimulates the phosphorylation of intracellular signaling Akt and Erk, and their specific antagonists impede CXCL12-induced chemotaxis. In addition, its level is correlated with lymphatic vessel density in multiple cancer tissues microarray. Furthermore, the CXCL12–CXCR4 axis is independent of the VEGFR-3 pathway in promoting lymphangiogenesis. Intriguingly, combined treatment with anti-CXCL12 and anti-VEGF-C antibodies results in additive inhibiting effects on tumor lymphangiogenesis and lymphatic metastasis. Conclusions: These results show the role of the CXCL12–CXCR4 axis as a novel chemoattractant for LECs in promoting lymphangiogenesis, and support the potential application of combined targeting of both chemokines and lymphangiogenic factors in inhibiting lymphatic metastasis. Clin Cancer Res; 18(19); 5387–98. ©2012 AACR.