Operação serenata de amor : análise de um projeto de tecnologia cívica que usa inteligência artificial para auditar contas públicas

Através desse trabalho buscamos realizar uma análise considerando de um lado os conceitos da accountability social e de outro o uso das novas tecnologias da informação e comunicação para o acesso das grandes bases de dados públicas. Concretizamos esse trabalho a partir de um estudo exploratório sobre o processo que resultou no desenvolvimento e operacionalização do projeto de tecnologia cívica conhecido por “Operação Serenata de Amor”, com o intuito de analisar as dificuldades e potencialidades presentes nesse tipo de experiência para a efetivação do controle social da sociedade sobre a gestão dos governos. Observando ainda se a mesma, ao acessar e fazer o cruzamento dos dados disponibilizados nas grandes bases de dados públicas através das NTICs, pode contribuir para ampliar e fortalecer a sua participação e capacidade para propor as políticas públicas de que necessita e acompanhando e avaliando seus resultados.Through this work we seek to carry out an analysis considering, on the one hand, the concepts of social accountability and, on the other, the use of new information and communication technologies for accessing large public databases. We carried out this work based on an exploratory study on the process that resulted in the development and operationalization of the civic technology project known as “Operação Serenata de Amor”, in order to analyze the difficulties and potentialities present in this type of experience for the realization of the society's social control over government management. Also observing whether it, when accessing and crossing the data made available in the large public databases through the NTICs, can contribute to expand and strengthen its participation and capacity to propose the public policies it needs and monitoring and evaluating its results

Operação serenata de amor : análise de um projeto de tecnologia cívica que usa inteligência artificial para auditar contas públicas

Através desse trabalho buscamos realizar uma análise considerando de um lado os conceitos da accountability social e de outro o uso das novas tecnologias da informação e comunicação para o acesso das grandes bases de dados públicas. Concretizamos esse trabalho a partir de um estudo exploratório sobre o processo que resultou no desenvolvimento e operacionalização do projeto de tecnologia cívica conhecido por “Operação Serenata de Amor”, com o intuito de analisar as dificuldades e potencialidades presentes nesse tipo de experiência para a efetivação do controle social da sociedade sobre a gestão dos governos. Observando ainda se a mesma, ao acessar e fazer o cruzamento dos dados disponibilizados nas grandes bases de dados públicas através das NTICs, pode contribuir para ampliar e fortalecer a sua participação e capacidade para propor as políticas públicas de que necessita e acompanhando e avaliando seus resultados.Through this work we seek to carry out an analysis considering, on the one hand, the concepts of social accountability and, on the other, the use of new information and communication technologies for accessing large public databases. We carried out this work based on an exploratory study on the process that resulted in the development and operationalization of the civic technology project known as “Operação Serenata de Amor”, in order to analyze the difficulties and potentialities present in this type of experience for the realization of the society's social control over government management. Also observing whether it, when accessing and crossing the data made available in the large public databases through the NTICs, can contribute to expand and strengthen its participation and capacity to propose the public policies it needs and monitoring and evaluating its results

Brazilian democracy moving forward: a "democracy impeded" by Wanderley Guilherme dos Santos and the debate on the coup of 2016

Resenha de: SANTOS, Wanderley Guilherme dos. A democracia impedida: o Brasil no século XXI. 1. ed. Rio de Janeiro: FGV Editora, 2017

El Adelanto : Diario político de Salamanca: Año XXXIX Número 11982 - 1923 Junio 20

Resenha de: SANTOS, Wanderley Guilherme dos. A democracia impedida: o Brasil no século XXI. 1. ed. Rio de Janeiro: FGV Editora, 2017.Review of: SANTOS, Wanderley Guilherme dos. A democracia impedida: o Brasil no século XXI. 1. ed. Rio de Janeiro: FGV Editora, 2017.Reseña de: SANTOS, Wanderley Guilherme dos. A democracia impedida: o Brasil no século XXI. 1. ed. Rio de Janeiro: FGV Editora, 2017

Search for intermediate mass black hole binaries in the first observing run of Advanced LIGO

International audienceDuring their first observational run, the two Advanced LIGO detectors attained an unprecedented sensitivity, resulting in the first direct detections of gravitational-wave signals produced by stellar-mass binary black hole systems. This paper reports on an all-sky search for gravitational waves (GWs) from merging intermediate mass black hole binaries (IMBHBs). The combined results from two independent search techniques were used in this study: the first employs a matched-filter algorithm that uses a bank of filters covering the GW signal parameter space, while the second is a generic search for GW transients (bursts). No GWs from IMBHBs were detected; therefore, we constrain the rate of several classes of IMBHB mergers. The most stringent limit is obtained for black holes of individual mass 100  M⊙, with spins aligned with the binary orbital angular momentum. For such systems, the merger rate is constrained to be less than 0.93  Gpc−3 yr−1 in comoving units at the 90% confidence level, an improvement of nearly 2 orders of magnitude over previous upper limits

First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data

International audienceWe report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the first Advanced LIGO observing run. This search investigates the low frequency range of Advanced LIGO data, between 20 and 100 Hz, much of which was not explored in initial LIGO. The search was made possible by the computing power provided by the volunteers of the Einstein@Home project. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population, corresponding to a sensitivity depth of 48.7  [1/Hz]. At the frequency of best strain sensitivity, near 100 Hz, we set 90% confidence upper limits of 1.8×10-25. At the low end of our frequency range, 20 Hz, we achieve upper limits of 3.9×10-24. At 55 Hz we can exclude sources with ellipticities greater than 10-5 within 100 pc of Earth with fiducial value of the principal moment of inertia of 1038  kg m2

First narrow-band search for continuous gravitational waves from known pulsars in advanced detector data

International audienceSpinning neutron stars asymmetric with respect to their rotation axis are potential sources of continuous gravitational waves for ground-based interferometric detectors. In the case of known pulsars a fully coherent search, based on matched filtering, which uses the position and rotational parameters obtained from electromagnetic observations, can be carried out. Matched filtering maximizes the signal-to-noise (SNR) ratio, but a large sensitivity loss is expected in case of even a very small mismatch between the assumed and the true signal parameters. For this reason, narrow-band analysis methods have been developed, allowing a fully coherent search for gravitational waves from known pulsars over a fraction of a hertz and several spin-down values. In this paper we describe a narrow-band search of 11 pulsars using data from Advanced LIGO’s first observing run. Although we have found several initial outliers, further studies show no significant evidence for the presence of a gravitational wave signal. Finally, we have placed upper limits on the signal strain amplitude lower than the spin-down limit for 5 of the 11 targets over the bands searched; in the case of J1813-1749 the spin-down limit has been beaten for the first time. For an additional 3 targets, the median upper limit across the search bands is below the spin-down limit. This is the most sensitive narrow-band search for continuous gravitational waves carried out so far

Open data from the first and second observing runs of Advanced LIGO and Advanced Virgo

Advanced LIGO and Advanced Virgo are monitoring the sky and collecting gravitational-wave strain data with sufficient sensitivity to detect signals routinely. In this paper we describe the data recorded by these instruments during their first and second observing runs. The main data products are gravitational-wave strain time series sampled at 16384 Hz. The datasets that include this strain measurement can be freely accessed through the Gravitational Wave Open Science Center at http://gw-openscience.org, together with data-quality information essential for the analysis of LIGO and Virgo data, documentation, tutorials, and supporting software

First all-sky search for continuous gravitational waves from unknown sources in binary systems

We present the first results of an all-sky search for continuous gravitational waves from unknown spinning neutron stars in binary systems using LIGO and Virgo data. Using a specially developed analysis program, the TwoSpect algorithm, the search was carried out on data from the sixth LIGO science run and the second and third Virgo science runs. The search covers a range of frequencies from 20 Hz to 520 Hz, a range of orbital periods from 2 to ∼2,254  h and a frequency- and period-dependent range of frequency modulation depths from 0.277 to 100 mHz. This corresponds to a range of projected semimajor axes of the orbit from ∼0.6×10−3  ls to ∼6,500  ls assuming the orbit of the binary is circular. While no plausible candidate gravitational wave events survive the pipeline, upper limits are set on the analyzed data. The most sensitive 95% confidence upper limit obtained on gravitational wave strain is 2.3×10−24 at 217 Hz, assuming the source waves are circularly polarized. Although this search has been optimized for circular binary orbits, the upper limits obtained remain valid for orbital eccentricities as large as 0.9. In addition, upper limits are placed on continuous gravitational wave emission from the low-mass x-ray binary Scorpius X-1 between 20 Hz and 57.25 Hz

Observing gravitational-wave transient GW150914 with minimal assumptions

The gravitational-wave signal GW150914 was first identified on September 14, 2015, by searches for short-duration gravitational-wave transients. These searches identify time-correlated transients in multiple detectors with minimal assumptions about the signal morphology, allowing them to be sensitive to gravitational waves emitted by a wide range of sources including binary black hole mergers. Over the observational period from September 12 to October 20, 2015, these transient searches were sensitive to binary black hole mergers similar to GW150914 to an average distance of ∼600  Mpc. In this paper, we describe the analyses that first detected GW150914 as well as the parameter estimation and waveform reconstruction techniques that initially identified GW150914 as the merger of two black holes. We find that the reconstructed waveform is consistent with the signal from a binary black hole merger with a chirp mass of ∼30  M⊙ and a total mass before merger of ∼70  M⊙ in the detector frame