Miracle-dz/UniFAR-FTUs huggingface dataset:
Construções de identidades profissionais na interação: algumas implicações para a formação continuada do professor

O objetivo do artigo e discutir como identidades profissionais de professores sao construidas na interacao em um curso de formacao continuada na area dos estudos da linguagem destinado a professores alfabetizadores, como tambem refletir sobre as implicacoes desse processo para esse tipo de formacao. A partir dos Estudos Culturais, as identidades sao entendidas como multiplas e discursivamente construidas. Os dados selecionados, gerados em pesquisa qualitativo-interpretativista de natureza etnografica, sao transcricoes de trechos de aulas do curso em que o embate entre professores e formador se torna relevante na construcao identitaria dos interlocutores. A base teorica parte da concepcao dialogica e social da linguagem do Circulo de Bakhtin e se sustenta nos estudos da Linguistica Aplicada e na perspectiva dos Estudos de Letramento. Na analise das interacoes, demonstra-se que, mesmo numa relacao institucional em relacao ao formador academico em que sao posicionadas como alunas, professoras constroem identidades de profissionais fortalecidas na argumentacao constituida em um momento de embate entre os interlocutores. Nesse processo, constroem um coletivo e trazem vozes sociais relacionadas a outros cursos e perspectivas de formacao do professor no embate com o formador.
ON THE TRUE ENERGY BUDGET OF GRB970508 AND GRB971214

We emphasize the already known idea that since GRB970508 released an energy of Qγ ≈ 10 δΩ ergs in soft gamma rays alone, where δΩ is the solid angle of the beam, the actual energy of the eep fireball driving the blast wave could be considerably higher than this value, QFB > Qγ . We further argue that, for reasonably large values of δΩ, as is probably suggested by the radio observations, the value of QFB ∼ 5.10 t3m n1 erg, for GRB970508; where n1 is the number density of the ambient medium in units of 1 proton/cm and tm is the epoch in months when the associated radioblastwave degrades to become mildly relativistic. Thus the value of QFB for GRB970508 could be as large as 10erg or even much higher. This idea is corroborated by GRB971214 for which the value ofQγ ≈ 2.10 δΩ is much higher than the corresponding value for GRB970508. It is likely that GRB971214 has a correspondingly higher value of QFB . We discuss that it is unlikely that this energy, QFB ∼ 10erg was liberated by the central engine by a direct electromagnetic mode. On the other hand, as conceived by several previous authors and as is suggested by supernova theories, the eep fireball (FB) driving the blast wave is likely to be preceded by a much stronger neutrino burst: ν + ν → e + e. Although, the efficiency for ee production by this latter route is usually found to be as low as η± ∼ 10, we point out that for very high values of neutrino energy releaseQν > QFB , it is possible that, the value of η± increses substantially. By considering that, the value of QFB for such GRBs is indeed ∼ 10 erg, we envisage that the energy of the actual neutrino burst/wind could be as high as ∼ 10 − 10 erg (here we ignore likely loss of energy by gravitational energy mode). This energy might be had from general relativistic collapse of a massive stellar core having initial gravitational mass, say, Mi ∼ few M to a stage having a potential well much deeper than what is present on a canonican neutron star surface. Accordingly, we predict that the new generation large neutrino telescopes may detect neutrino burst of energy Qν ∼ 10 − 10 ergs, with neutrino energies touching ∼ 1 GeV, in coincidence with GRBs.
Measuring brain hemodynamic changes in a songbird: responses to hypercapnia measured with functional MRI and near-infrared spectroscopy

Songbirds have been evolved into models of choice for the study of the cerebral underpinnings of vocal communication. Nevertheless, there is still a need for in vivo methods allowing the real-time monitoring of brain activity. Functional Magnetic Resonance Imaging (fMRI) has been applied in anesthetized intact songbirds. It relies on blood oxygen level-dependent (BOLD) contrast revealing hemodynamic changes. Non-invasive near-infrared spectroscopy (NIRS) is based on the weak absorption of near-infrared light by biological tissues. Time-resolved femtosecond white laser NIRS is a new probing method using real-time spectral measurements which give access to the local variation of absorbing chromophores such as hemoglobins. In this study, we test the efficiency of our time-resolved NIRS device in monitoring physiological hemodynamic brain responses in a songbird, the zebra finch (Taeniopygia guttata), using a hypercapnia event (7% inhaled CO2). The results are compared to those obtained using BOLD fMRI. The NIRS measurements clearly demonstrate that during hypercapnia the blood oxygen saturation level increases (increase in local concentration of oxyhemoglobin, decrease in deoxyhemoglobin concentration and total hemoglobin concentration). Our results provide the first correlation in songbirds of the variations in total hemoglobin and oxygen saturation level obtained from NIRS with local BOLD signal variations.
Interference alignment over a combination of space and frequency

Time or frequency extensions are integral in most information theoretic studies of interference alignment (IA), but a large majority of the more practically oriented studies have focused on narrowband space-only schemes. As wideband systems are now common, it is natural to investigate IA for frequency extended multiple antenna systems where precoding is performed over a combination of space and frequency dimensions. For this setting, we derive a necessary condition on IA feasibility using the properness framework and investigate the sum rate performance using simulations. Applying frequency extensions to multiple antenna systems allows for some additional users to be served interference-free, but our numerical results with synthetic channels indicate a practically more important improvement in terms of a power gain. Emulating a particular scenario using channel measurements, with real-world path losses and channel correlations, we see similar performance gains.
The Medipix3 Prototype, a Pixel Readout Chip Working in Single Photon Counting Mode With Improved Spectrometric Performance

A prototype pixel detector readout chip has been developed with a new front-end architecture aimed at eliminating the spectral distortion produced by charge diffusion in highly segmented semiconductor detectors. In the new architecture neighbouring pixels communicate with one another. At the corner of each pixel summing circuits add the total charge deposited in each sub-group of 4 pixels. Arbitration logic assigns a hit to the summing circuit with the highest charge. In the case where incoming X-ray photons produce fluorescence-a particular issue in high-Z materials-the charge deposited by those fluorescent photons will be included in the charge sum provided that the deposition takes place within the volume of the pixels neighbouring the initial impact point. The chip is configurable such that either the dimensions of each detector pixel match those of one readout pixel or detector pixels are 4 times greater in area than the readout pixels. In the latter case event-by-event summing is still possible between the larger pixels. As well as this innovative analog front-end circuit, each pixel contains comparators, logic circuits and two 15-bit counters. When the larger detector pixels are used these counters can be configured to permit multiple thresholds in a pixel providing spectroscopic information. The prototype chip has been designed and manufactured in an 8-metal 0.13 mum CMOS technology. First measurements show an electronic pixel noise of ~ 72 e-rms (Single Pixel Mode) and ~ 140 e-rms (Charge Summing Mode).
The class position of the Asian petty bourgeoisie

Abstract This article is based on a survey of the population of Indian, Pakistani and Bangladeshi small shopkeepers and restaurant owners in Oxford. The article examines three aspects of this group of small business owners, firstly, their economic position in terms of income and property; secondly, the ‘work situation'; and finally, their ‘status situation’. On this basis, an attempt is made to determine the class position of this entrepreneurial group, and to see if movement into the petty bourgeoisie implies social mobility, or merely a sideways shift from the Lumpen Proletariat into the ‘lumpen bourgeoisie’. The study reveals that the market situation of the Oxford small business owners is quite secure, and that within the work situation, independence and a certain measure of control in interaction with the majority society are greatly valued. While status within the society at large may not be significantly improved, the ‘hosts’ frame of reference is not the important one for the Asians — within their.
IoT platform for Smart Cities: Requirements and implementation case studies

Internet-of-Things (IoT) is considered as the key player to move forward the Smart City vision. Indeed, pervasive devices can enable a fain-grained monitoring of buildings and energy distribution networks. Thus, such information can be used to enhance energy optimization in our cities. However, interoperability among heterogeneous devices is a challenging task. Furthermore, all these IoT devices produce a huge amount of data that must be collected and post-processed, thus entering into the Big Data domain. Therefore, a distributed IoT platform for energy management has to be designed for i) enabling the interoperability among heterogeneous IoT devices and ii) handling such huge amount of data. In this paper, we describe the requirements to be addressed in order to develop an IoT platform for Smart City. We also present two distributed IoT platforms we developed to improve the energy management in Smart City. Finally, based on our experience in a real-world case study, we provide an estimation of the amount of energy-related information our presented platforms have to manage.
Optimal Times to Contact Sample Households

Finding a suitable respondent at home is an essential and expensive component of a household survey. This article reports on the results of a study of the probabilities of finding someone aged 14 or older at home and discusses the application of such data to survey design and budgeting. The authors are staff members of the Research Triangle Institute, P.O. Box 12194, Research Triangle Park, North Carolina 27709. M. F. Weeks is a survey specialist in the Survey Operations Center; B. L. Jones, R. E. Folsom, Jr., and C. H. Benrud are statisticians in the Sampling Research and Design Center. Public Opinion Quarterly ? 1980 by The Trustees of Columbia University Published by Elsevier North Holland, Inc. 0033-362X/80/0044-101/$1.75 This content downloaded from 157.55. 39.129 on Thu, 28 Jul 2016 04:19:54 UTC All use subject to http://about.jstor. org/terms 102 WEEKS, JONES, FOLSOM AND BENRUD In 1972 the U.S. Bureau of the Census released a report showing the probabilities of finding people of various characteristics (sex, race, and age group) at home at various times of day on a weekday during November 1971 (Weber and Burt, 1972). This report also included a limited comparison with 1960 census data, which showed a significant decrease in the proportion of households with at least one person aged 14+ at home. The census report, however, included no data for specific days of the week or for weekends. During the period from March to June 1976, the Research Triangle Institute (RTI) screened 22,290 occupied housing units in its national area probability sample to obtain household rosters from which to identify persons eligible for a household survey being conducted concurrently as well as for subsequent surveys involving different target populations. Among the data recorded for each screening visit were the time of day, day of week, whether or not a household respondent aged 14+ was at home, and, if so, the race of the respondent. However, no data were obtained on who was at home, other than the respondent, at the time of the successful screening visit. This article reports on an analysis of these screening data to estimate the proportion of households with at least one person aged 14 or older at home during spring 1976. Comparisons with census data are made to indicate trends in the proportion of such households, by time of day and type of area. Also shown are estimated proportions for each day of the week (including weekends) and approximate estimates of standard errors for these proportions. The following sections provide additional detail on the RTI survey, describe the format and content of the tables and figure in the article, point out some of the highlights from these data, and comment on the utility of the data to the survey researcher in designing and budgeting a household survey.
Thermal-Electromechanical FEM–BEM Model for MEMS Resonator Simulation

Minimization of dissipative losses is a major goal in microelectromechanical systems (MEMS) resonator design. For an accurate simulation of a MEMS resonator vibrating in a vacuum, thermoelastic damping phenomena related to irreversible heat dissipation induced by the coupling between heat transfer and strain rate during resonator vibration and acoustic radiation into the substrate have to be taken into account. The finite-element method (FEM) is suitable for structural simulation, particularly for thermoelastically damped structures vibrating in a vacuum. When the vibrating structure is deposited on an unbounded elastic medium, radiating conditions have to be taken into account. The boundary-element method (BEM) is suitable for simulation on an unbounded medium, and it is often used to complete the FEM. The goal of our paper is to develop and to validate a thermal-electromechanical FEM-BEM tool, which is helpful to predict and understand MEMS energy loss dissipation mechanisms.
Families on Facebook

This descriptive study of millions of US Facebook users documents "friending" and communication patterns, exploring parent-child relationships across a variety of life stages and gender combinations. Using statistical techniques on 400,000 posts and comments, we identify differences in how parents talk to their children (giving advice, affection, and reminders to call) compared to their other friends, and how they address their adult sons and daughters (talking about grandchildren and health concerns, and linguistically treating them like peers) compared to their teenage children. Parents and children have 20-30 mutual friends on the site, 19% of whom are relatives. Unlike previous findings on family communication, interaction frequency on Facebook does not decrease with geographic distance.
Marketing and Development in Third World Contexts: An Evaluation and Future Directions

This study attempts to locate existing marketing perspectives on development within the larger framework of "development studies. " The purpose is to ascertain the underlying principles and assumptions in the development of marketing thought and thereby to facilitate the evaluation of the role of marketing in the development process. Such an approach is in keeping with the aims of creating critical knowledge through radical deconstruction processes outlined by Firat, Dholakia, and Bagozzi (1987). This article assesses marketing perspectives in terms of their fundamental assumptions and key features as and when they fall into three schools of thought: modernization, institutional, and radical. By grounding them in this manner, we argue that a critique of such ideas is possible, which then allows for a fuller assessment of contributions made by marketing scholars.
Modeling aspects of nonlinear steering machine of conventional ships

The conventional ships have one main aft thruster, and a rudder actuated by the steering machine (SM), which generates yaw moments to control the yaw angle. SM is a nonlinear system with absolute stability. Considering only yaw angle and mono-variable autopilots, SM can be simplified, taking into account only two limitations: the maximum rudder angle and rudder rate. But for smart autopilots, the nonlinear SM model with tri-positional hysteretic controller (THC) must be considered. In this paper, a new nonlinear SM model, with inertia of hydraulic mass driven by the servomotor, is proposed. Behavior aspects, compared with classic SM from literature, are studied. Both nonlinear and simplified linear proposed models have better behavior, with more realistic responses. Also, limitations and influence on yaw and roll motions are presented.
Effects of altering dietary essential fatty acids on requirements for non-steroidal anti-inflammatory drugs in patients with rheumatoid arthritis: a double blind placebo controlled study.

In rheumatoid arthritis (RA) benefit from non-steroidal anti-inflammatory drugs (NSAIDs) is mediated through inhibition of the cyclo-oxygenase enzyme, thereby decreasing production of the 2 series prostaglandins (PGs). The lipoxygenase enzyme is intact, however, allowing leucotriene (LT) production, e.g., LTB4 (an inflammatory mediator). Treatment with evening primrose oil (EPO) which contains gamma-linolenic acid (GLA) leads to production of the 1 series PGs, e.g., PGE1, which has less inflammatory effects. Also LT production is inhibited. Eicosapentaenoic acid (EPA, fish oil) treatment provides a substrate for PGs and LTs, which are also less inflammatory. In this study 16 patients with RA were given 540 mg GLA/day (EPO), 15 patients 240 mg EPA and 450 mg GLA/day (EPO/fish oil), and 18 patients an inert oil (placebo). The aim of this study was to determine if EPO or EPO/fish oil could replace NSAID treatment in RA. The initial 12 month treatment period was followed by three months of placebo for all groups. Results at 12 months showed a significant subjective improvement for EPO and EPO/fish oil compared with placebo. In addition, by 12 months the patients receiving EPO and EPO/fish oil had significantly reduced their NSAIDs. After 3 months of placebo those receiving active treatment had relapsed. Despite the decrease in NSAIDs, measures of disease activity did not worsen. It is suggested that EPO and EPO/fish oil produce a subjective improvement and allow some patients to reduce or stop treatment with NSAIDs. There is, however, no evidence that they act as disease modifying agents.
Effects of Boron on the Water Relations of Higher Plants.

The dleimand for aln inproved bioassay of the substances which promote and inhibit growth in plants is apparent from the large number of tests which have been suggested in recent years and has prompted the efforts which will be reported in this palper. The present investigation resulted in (a) the improvement of the well-knowsn coleoptile section test and (b) the Norking out of a new test using as a test organ the first internode of the oat seedling.
Computer-assisted delivery of cognitive-behavioral therapy for addiction: a randomized trial of CBT4CBT.

OBJECTIVES This study evaluated the efficacy of a computer-based version of cognitive-behavioral therapy (CBT) for substance dependence. METHOD This was a randomized clinical trial in which 77 individuals seeking treatment for substance dependence at an outpatient community setting were randomly assigned to standard treatment or standard treatment with biweekly access to computer-based training in CBT (CBT4CBT) skills. RESULTS Treatment retention and data availability were comparable across the treatment conditions. Participants assigned to the CBT4CBT condition submitted significantly more urine specimens that were negative for any type of drugs and tended to have longer continuous periods of abstinence during treatment. The CBT4CBT program was positively evaluated by participants. In the CBT4CBT condition, outcome was more strongly associated with treatment engagement than in treatment as usual; furthermore, completion of homework assignments in CBT4CBT was significantly correlated with outcome and a significant predictor of treatment involvement. CONCLUSIONS These data suggest that CBT4CBT is an effective adjunct to standard outpatient treatment for substance dependence and may provide an important means of making CBT, an empirically validated treatment, more broadly available.
Diagnosing HIV-associated tuberculosis: reducing costs and diagnostic delay.

SETTING University-affiliated hospital in South Africa. OBJECTIVE To assess the time to diagnosis and the yield and laboratory cost of diagnostic procedures in human immunodeficiency virus (HIV) associated tuberculosis. DESIGN Cohort study. PATIENTS Adult HIV-infected patients with newly-diagnosed tuberculosis admitted over a 2-year period. RESULTS A total of 141 admissions fulfilled the case definition. Sputum smear yield (43% overall) correlated strongly with chest radiograph appearance but not with CD4+ lymphocyte count. Sputum smear yield was approximately 40% per sample sent, resulting in a high cumulative yield when > or = three samples were sent. Smear of sputum or wide needle lymph node aspirates were the most cost-effective diagnostic methods. Significant diagnostic delay occurred in sputum smear-negative patients. Most patients with sputum smear-negative tuberculosis had either pleural effusions or lymphadenopathy. Lymph node biopsy had a high diagnostic yield even in patients with symmetrical nodes, but was under-utilised in this group. There was unnecessary expenditure on cultures, with many patients having several positive cultures. CONCLUSION Repeated sputum smear examination produces a high cumulative yield in HIV-associated tuberculosis. Considerable savings in laboratory utilisation and bed occupancy would have been made if a streamlined diagnostic approach with greater use of lymph node aspirate and early pleural or lymph node biopsy had been followed.
Spatial decay analysis in interconnected dynamical systems using vector Lyapunov functions

In this paper we analyze the propagation of input signals in a large-scale network of dynamical systems. Using vector Lyapunov functions, the individual multidimensional subsystems are first reduced to an approximating scalar representation in the form of the evolution of their weighted norm. The norm simultaneously qualifies as a local Lyapunov function for the isolated subsystem. Employing properties of M-matrices, we then derive linear system dynamics which provide an upper bound for the evolution of the original system, and use them to investigate the decay between hops from subsystem to subsystem of the steady state magnitude. Two input signals are considered: Constant input, and a sinusoidal input. The results are demonstrated using numerical simulations.
The search for political community: American activists reinventing commitment

1. Personalism and political commitment 2. Personalized politics: the case of the US Greens 3. Speaking out in suburbia 4. Imagining community, organizing community 5. Culture, class, and life-ways of activism 6. Personalized politics and cultural radicalism since the 1960s 7. The search for political community Appendices.