Miracle-dz/UniFAR-FTUs huggingface dataset:
From Algorithms to Sensor Networks

ABSTRACT Wireless and/or mobile networks are an excellent playground for researchers with an algorithmic background. Many research problems turn out to be variants of classic graph theory problems. In particular the rapidly growing areas of ad hoc and sensor networks demand new solutions for timeless graph theory problems, because i) wireless devices have lower bandwidth and ii) wireless devices are less dependable and therefore the topology of the network changes rather frequently. As a consequence, algorithms for wireless and/or mobile networks should have i) as little communication as possible and should ii) run as fast as possible. Both goals can only be achieved by developing algorithms requiring a small number of communication rounds only (so-called local algorithms). In this work we present a few algorithmic applications in wireless networking, such as clustering, topology control and geo-routing. Each section is supplemented with an open problem.
Performance analysis of COFDM in a mobile radio channel using the signal processing worksystem

The performances of a multicarrier modulation (COFDM) system in an urban mobile radio channel is analyzed using a computer-aided analysis tool called SPW. This multicarrier modulation system, with convolutional coding and interleaving, provides an extremely bandwidth efficient and multipath resistant transmission method. COFDM gives a remarkable performance in selective Rayleigh channels at a much higher bit rate than conventional systems.
The Relationship of Sibling Caretaking and Attentiveness to a Peer Tutor1

Ethnographic measures of sibling caretaking were correlated with attentiveness to a peer tutor. Boys from families who assigned childcare tasks to male siblings were more likely to be attentive in a dyadic peer-tutoring session. General classroom attentiveness was also highly correlated with attentiveness to a peer tutor and to male sibcare. Girl tutee attentiveness and female sibcare were not correlated. Families who assign major childcare tasks to boys apparently foster behaviors that generalize to the classroom. The transfer may not be specific from sibling interaction experiences to peer tutoring situations since family reliance on sibcare also correlated with generalized classroom attentiveness, and general (nonsibcare) chore demands
Etnomarketing: antropologia, cultura e consumo

At first the article attempts to point the cultural and symbolic aspects of the consumption and the use of an anthropological approach on the marketing management. Therefore, the text focuses on real situations that have been occured in the business world. Afterwards, using the biographic method, it describes the professional trajectories of two anthropologists who have been acting in the marketing field for many years. Furthermore, there is a goal to contribute to discussions about the interdisciplinary boundary that envolves Anthropology of Consumption and Marketing Management.
`Entering the blogosphere': some strategies for using blogs in social research

Since 1999 blogs have become a significant feature of online culture. They have been heralded as the new guardians of democracy, a revolutionary form of bottom-up news production and a new way of constructing self and doing community in late-modern times. In this article I highlight the significance of the `blogosphere' as a new addition to the qualitative researcher's toolkit and some of the practical, theoretical and methodological issues that arise from this. Some of the key ethical issues involved in blog data collection are also considered. The research context is a project on everyday understandings and experiences of morality.
Scalable Clustering of Internet Paths by Shared Congestion

Internet paths sharing the same bottleneck can be identified using several shared congestion detection techniques. However, all of these techniques have been designed to detect shared congestion between a pair of paths. To cluster N paths by shared congestion, a straightforward approach of using pairwise tests would require O(N) time complexity. In this paper, we present a scalable approach to cluster Internet paths based on DCW (Delay Correlation with Wavelet denoising) which does not require a common end point between paths. We present a function to map each path’s measurement data into a point in a multidimensional space such that points are close to each other if and only if the corresponding paths share congestion. Because points in the space are indexed using a tree-like structure, the computational complexity of clustering N paths can be reduced to O(N log N). The indexing overhead can be further improved by reducing dimensionality of the space through wavelet transform. Computation cost is kept low by reusing for dimensionality reduction the same wavelet coefficients obtained in DCW. Our approach is evaluated by simulations and found to be effective for a large N . The tradeoff between dimensionality and clustering accuracy is shown empirically.
Identification of novel FLT‐3 Asp835 mutations in adult acute myeloid leukaemia

Genomic DNA from 97 cases of adult de novo acute myeloid leukaemia (AML) was screened using polymerase chain reaction (PCR) and conformation‐sensitive gel electrophoresis (CSGE) for FLT3 exon 20 mutations. Initial sequencing of four cases, representing the spectrum of CSGE abnormalities, revealed changes affecting codon Asp835 in three cases and also an intron 20 A to G change. In order to identify all possible Asp835 alterations, as well as the frequency of the intronic change nucleotide 2541 + 57 A→G, the patient PCR products were digested with EcoRV and NlaIII respectively. Seven cases (7·2%) possessed a mutation affecting Asp835; these were identified, following DNA sequencing, as Asp835Tyr (n = 5), Asp835His (n = 1) and Asp835del (n = 1). Alterations affecting Asp835 were not found in 80 normal control DNA samples. In contrast, the nucleotide 2541 + 57 A→G change was shown to be a polymorphism, with an allelic frequency of 0·24 for the G and 0·76 for the A allele. This study reports, for the first time, point mutations in the human FLT3 gene that, because of their homology with other class III receptor tyrosine kinase mutations, probably result in constitutive activation of the receptor.
Vitamin D status and mortality of German hemodialysis patients.

AIM The goal was to analyze the link between blood levels of calcidiol and all-cause, cardiac and infectious diseases, and mortality due to cancer in hemodialysis patients. PATIENTS AND METHODS This study retrospectively evaluated a representative sub-cohort (n=6,518) of German hemodialysis patients from the incidence cohorts 1997-2006. RESULTS Most (58.8%) were found to be vitamin D deficient (25(OH)D<20 ng/ml), with 41.2% being severely deficient (25(OH)D<12.5 ng/ml). All-cause mortality risk more than doubled in patients with severe deficiency (adjusted odds ratio (aOR)=2.67; 95% confidence interval (CI)=2.30-3.10; p<0.0001). Comparable data were obtained for mortality from cardiac disease (aOR=1.57; 95% CI=1.30-1.88; p<0.0001), infectious disease (aOR=1.48; 95% CI=1.15-1.90; p=0.0026), and cancer (aOR=1.51; 95% CI=1.09-2.08; p=0.0121), respectively. CONCLUSION These data highlight the need to ensure primarily adequate 25(OH)D levels in dialysis patients for an advantage of survival.
Identification of vocal nodules and laryngitis by Gauss mixture model

In this paper, Gauss mixture model algorithm is used for recognition of vocal nodules and laryngitis by calculating the posterior probability of training model. The pathological voices database of Soochow University was used in experiment. The experiment result shows that compared with three kinds of common traditional recognition algorithm C4.5 decision trees, Naïve Bayes and Support vector machine. This method to identify the sample recognition rate was increased by 3%, 8% and 9%, which indicated that the Gauss mixture model algorithm is more suitable for the recognition of vocal nodules and laryngitis in this paper, Gauss mixture model algorithm is used for recognition of vocal nodules and laryngitis by calculating the posterior probability of training model. The pathological voices database of Soochow University was used in experiment. The experiment result shows that compared with three kinds of common traditional recognition algorithm C4.5 decision trees, Naïve Bayes and Support vector machine. This method to identify the sample recognition rate was increased by 3%, 8% and 9%, which indicated that the Gauss mixture model algorithm is more suitable for the recognition of vocal nodules and laryngitis.
Management of ocular hypertension.

CASE REPORT A 73-year-old Hispanic woman with Type II diabetes mellitus for the past 3 years is referred for management of ocular hypertension. Her family history is unremarkable. Slitlamp biomicroscopy reveals no apparent secondary cause for her elevated intraocular pressure (IOP) and both angles are widely open with mild, uniform, trabecular pigmentation. Cup–disc ratios are 0.6 OU, with pink, healthy neural rims without evidence of thinning, notch, nerve fiber layer defect, or localized pallor. Achromatic automated perimetry is unremarkable, and short-wavelength perimetry is unreliable. IOPs range from 23 to 28 mm Hg. Corneal thicknesses are 558 and 560 μm, in the right and left eyes, respectively. 1. Which patients with ocular hypertension should be treated? 2. Should one correct IOP for corneal thickness and if so, how should this be done? 3. How should IOP be measured in eyes with irregular corneal surfaces or following keratorefractive surgery?
Cooperative Relay Using Erasure Codes for Reliable Data Transport in Wireless Networks

Providing efficient and reliable data transport is a challenging problem for a variety of emerging applications which require reliable data packet delivery in wireless networks. In this paper, we propose to incorporate erasure codes at transport layer in the notion of cooperative relay communications to provide reliability and robustness for data transport in wireless networks. Our basic idea is to exploit the joint merits of erasure codes and cooperative relay communications. We design two cooperative relay strategies with different implementation complexity and analyze their performance based on a general 3-node relay model. Numerical results show that our proposed approach can achieve significant performance improvement in terms of data transport efficiency. In addition, the proposed approach exhibits strong robustness to packet losses on wireless links for data transfer.
Prevalence of Methicillin-Resistant Staphylococcus aureus and Other Staphylococcus Species in Raw Meat Samples Intended for Human Consumption in Benin City, Nigeria: Implications for Public Health

The present study was designed to characterize methicillin-resistant staphylococci from raw meat. A total of 126 meat samples were obtained from open markets between February and April, 2015. Antimicrobial susceptibility testing was carried out using the disc diffusion method. Molecular profiling was conducted using 16S rRNA, mecA, nuc, and PVL gene signatures were detected by polymerase chain reaction assay. Fifty isolates of methicillin-resistant Staphylococcus spp. were detected in 26 (52%) pork, 14 (28%) beef and 10 (20%) chicken samples. The staphylococcal isolates were identified through partial 16S ribosomal ribonucleic acid (16S rRNA) nucleotide sequencing, and BLAST analysis of the gene sequence revealed 98%–100% staphylococcal similarity. All isolates from beef and chicken samples amplified the mecA gene, while 100% of the MRSA isolates amplified the PVL gene. The multidrug resistance profile (resistant to ≥1 antimicrobial agent in ≥3 classes of antimicrobial agents) of the staphylococcal isolates showed that 7 isolates were resistant to methicillin, penicillin, clindamycin, chloramphenicol, trimethoprim-sulfamethoxazole, kanamycin, amoxicillin, cloxacillin, erythromycin, vancomycin, and gentamycin. There was a significant regression effect from the multidrug-resistant profile on the number of isolates (p < 0.05) suggesting a consequence of the dissemination of resistant strains within bacterial populations. The findings of the present study indicate that raw meats in the Benin metropolis were possibly contaminated with pathogenic and multi-drug resistant staphylococci strains and therefore could constitute a risk to public health communities.
SYNERGY DURING IN VITRO CYTOTOXIC ALLOGRAFT RESPONSES

A mouse in vitro allograft system was used to evaluate the concept of T-T interaction in T cell-mediated cellular immunity. In analyzing the responsiveness of thymus-processed lymphocytes as obtained from different tissues, a heretogeneity within T cells was found in regard to their capacity to be immunized in vitro against transplantation antigens. Recirculating T cells were 10–20-fold superior to thymocytes, splenic T cells being intermediate. When few (1.5 x 106) peripheral T cells, in numbers too small to yield good cytotoxic responses, were mixed with 14 x 106 thymocytes and the cell mixture immunized in vitro against cell-bound alloantigens, cytotoxic activity was generated exceeding about 10–20-fold the values that could be explained by a pure additive effect. Synergy occurred also in a mixture of responder T cells derived from CBA (H-2k) and AKR (H-2k) mice. Thus AKR anti-φ C3H serum could be used for discriminating between thymus-derived and peripheral T cell-derived cytotoxic lymphocytes (CL). Cytotoxic activity produced during the synergistic interaction between thymocytes and peripheral T cells was about 70% T cell derived, the remainder being thymus derived. The synoptic interpretation of this finding and "limiting dilution" experiments of the responder cells suggested strongly that peripheral T cells provide the major source for precursor cells of CL, thymocytes acting mainly as helper (amplifier) cells.
A sensitive cardiac troponin T assay in stable coronary artery disease.

BACKGROUND In most patients with stable coronary artery disease, plasma cardiac troponin T levels are below the limit of detection for the conventional assay. The distribution and determinants of very low circulating troponin T levels, as well as their association with cardiovascular events, in such patients are unknown. METHODS We used a new, high-sensitivity assay to determine the concentration of cardiac troponin T in plasma samples from 3679 patients with stable coronary artery disease and preserved left ventricular function. Results of the assay were analyzed in relation to the incidence of cardiovascular events during a median follow-up period of 5.2 years. RESULTS With the highly sensitive assay, concentrations of cardiac troponin T were at or above the limit of detection (0.001 microg per liter) in 3593 patients (97.7%) and at or above the 99th percentile for apparently healthy subjects (0.0133 microg per liter) in 407 patients (11.1%). After adjustment for other independent prognostic indicators, there was a strong and graded increase in the cumulative incidence of cardiovascular death (adjusted hazard ratio per unit increase in the natural logarithm of the troponin T level, 2.09; 95% confidence interval [CI], 1.60 to 2.74; P<0.001) and of heart failure (adjusted hazard ratio, 2.20; 95% CI, 1.66 to 2.90; P<0.001) in this study group. Increased risk associated with higher levels of troponin T was evident well below the limit of detection of conventional cardiac troponin T assays and below the 99th percentile of values in a healthy population. There was no association between troponin T levels as measured with the highly sensitive assay and the incidence of myocardial infarction (adjusted hazard ratio, 1.16; 95% CI, 0.97 to 1.40; P=0.11). CONCLUSIONS After adjustment for other independent prognostic indicators, cardiac troponin T concentrations as measured with a highly sensitive assay were significantly associated with the incidence of cardiovascular death and heart failure but not with myocardial infarction in patients with stable coronary artery disease.
Batch-Expansion Training: An Efficient Optimization Paradigm for Machine Learning

We propose Batch-Expansion Training (BET), a framework for running a batch optimizer on a gradually expanding dataset. As opposed to stochastic approaches, batches do not need to be resampled i.i. d. at every iteration, thus making BET more resource efficient in a distributed setting, and when disk-access is constrained. Moreover, BET can be easily paired with most batch optimizers, does not require any parameter-tuning, and compares favorably to existing stochastic and batch methods. We show that when the batch size grows exponentially with the number of outer iterations, BET achieves optimal $\tilde{O}(1/\epsilon)$ data-access convergence rate for strongly convex objectives.
Angiotensin II type 1 receptor blocker ameliorates uncoupled endothelial nitric oxide synthase in rats with experimental diabetic nephropathy

Background Recent studies showed that angiotensin II type 1 receptor blocker (ARB) slows progression of chronic renal disease in patients with type 2 diabetes, regardless of changes in blood pressure. We showed that the imbalance of nitric oxide (NO) and reactive oxygen species (ROS) due to endothelial NO synthase (eNOS) uncoupling contributed to renal dysfunction in the diabetic nephropathy. The aim of this study was to determine the effects of ARB on uncoupled eNOS in rat diabetic nephropathy. Methods. Diabetes was induced in Sprague-Dawley rats with streptozotocin (65 mg/ kg body weight). After 6 weeks, rats were divided into saline (DM; n = 11) and ARB, losartan groups (DM+Los; n = 11). After 2-week treatment, glomerular ROS production was assessed by 2′,7′-dichlorofluorescin diacetate (DCFH-DA)-derived chemiluminescence. Renal NO and ROS production were imaged by confocal laser microscopy after renal perfusion with DCFH-DA and diaminorhodamine-4M acetoxymethyl ester with l-arginine. The dimeric form of eNOS was measured by low-temperature sodium dodecyl sulfate–polyacrylamide gel electrophoresis. Serum tetrahydrobiopterin (BH4) concentrations were determined by high-performance liquid chromatography. Protein and mRNA expression of GTP cyclohydrolase 1 (GTPCH1), key enzyme of BH4 synthesis, were examined. Results Losartan attenuated glomerular ROS production in DM. Accelerated ROS production and diminished bioavailable NO caused by NOS uncoupling were noted in DM glomeruli. Losartan reversed the decreased GTPCH1 and decreased dimeric form of eNOS and glomerular NO production by increased BH4 bioavailability. Conclusions. ARB improved the NOS uncoupling in diabetic nephropathy by increasing BH4 bioavailability.
Imbalance in the Expression of CXC Chemokines Correlates with Bronchoalveolar Lavage Fluid Angiogenic Activity and Procollagen Levels in Acute Respiratory Distress Syndrome1

Diffuse alveolar damage is the histopathological hallmark of acute respiratory distress syndrome (ARDS) and is a stereotypic response to a variety of etiologies. Moreover, a significant proportion of ARDS survivors have residual pulmonary fibrosis and compromised pulmonary function. This suggests that the pathogenesis of diffuse alveolar damage that ultimately leads to the chronic fibrosis of ARDS has features of dysregulated repair exemplified by exaggerated intra-alveolar angiogenesis and fibrogenesis (i.e., fibroproliferation and deposition of extracellular matrix), leading to progressive alveolar fibrosis and impaired lung function. We obtained bronchoalveolar lavage fluid (BALF) from patients with ARDS or ventilated control patients and assessed CXC chemokine levels by ELISA. We found an imbalance in the expression of ELR+ as compared with ELR− CXC chemokines from BALF of patients with ARDS as compared with controls. This imbalance correlated with angiogenic activity as assessed by the corneal micropocket assay. Furthermore, these levels correlated with both procollagen I and procollagen III levels in BALF. In contrast, while BALF levels of vascular endothelial growth factor were elevated, vascular endothelial growth factor did not appear to be significantly contributing to the angiogenic activity. These findings suggest that CXC chemokines have an important role in the fibroproliferative phase of ARDS via the regulation of angiogenesis.
Multilingual Schema Matching for Wikipedia Infoboxes

Recent research has taken advantage of Wikipedia's multi-lingualism as a resource for cross-language information retrieval and machine translation, as well as proposed techniques for enriching its cross-language structure. The availability of documents in multiple languages also opens up new opportunities for querying structured Wikipedia content, and in particular, to enable answers that straddle different languages. As a step towards supporting such queries, in this paper, we propose a method for identifying mappings between attributes from infoboxes that come from pages in different languages. Our approach finds mappings in a completely automated fashion. Because it does not require training data, it is scalable: not only can it be used to find mappings between many language pairs, but it is also effective for languages that are under-represented and lack sufficient training samples. Another important benefit of our approach is that it does not depend on syntactic similarity between attribute names, and thus, it can be applied to language pairs that have distinct morphologies. We have performed an extensive experimental evaluation using a corpus consisting of pages in Portuguese, Vietnamese, and English. The results show that not only does our approach obtain high precision and recall, but it also outperforms state-of-the-art techniques. We also present a case study which demonstrates that the multilingual mappings we derive lead to substantial improvements in answer quality and coverage for structured queries over Wikipedia content.
GENETIC DISSECTION OF THE Vav 2-Rac 1 SIGNALING AXIS IN VASCULAR SMOOTH MUSCLE CELLS by

Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC) and University of Salamanca, Campus Unamuno, 37007 Salamanca, Spain. 3 Departamento de Fisiología y Farmacología, University of Salamanca, Campus Unamuno, 37007 Salamanca, Spain. Department of Pharmacology, Max-Planck Institute for Heart and Lung Research, Ludwigstr. 43, 61231 Bad Nauheim, Germany. Division of Experimental Hematology and Cancer Biology, Children’s Hospital Research Foundation, Cincinnati, OH 45229, USA
To Be a Great Teacher, Do Well at Something Else: Why I Write Screenplays.

I sat outside the door, listening to Harry teach. I wanted to be in there, I wanted to be part of it all. But that was behind me. Fifteen years behind me. I had my own students now. In a university many miles north of where I was waiting, humbly, for Harry Crews to dismiss his class, to walk out the door of my beloved alma mater, and into the warm Florida night, toward me, sitting on a bench. I was scared. I had come forty-three hundred miles to find out if this man, the South's great fiction writer, would give me permission to write his biogra phy. Would he find me worthy? Would he even talk to me? Harry Crews is not famous for keeping appointments, for responding to correspondence. I had decided to ask him face to face, to let him see into my eyes as I asked him and as he decided whether or not he could trust me. He gave me five minutes? he was off to L.A. that night? a promise of more and a copy of Florida Frenzy, a book I had not been able to find in Canada.