AI-driven web API testing

Testing of web APIs is nowadays more critical than ever before, as they are the current standard for software integration. A bug in an organization’s web API could have a huge impact both in ternally (services relying on that API) and externally (third-party applications and end users). Most existing tools and testing ap proaches require writing tests or instrumenting the system under test (SUT). The main aim of this dissertation is to take web API testing to an unprecedented level of automation and thoroughness. To this end, we plan to apply artificial intelligence (AI) techniques for the autonomous detection of software failures. Specifically, the idea is to develop intelligent programs (we call them “bots”) ca pable of generating hundreds, thousands or even millions of test inputs and to evaluate whether the test outputs are correct based on: 1) patterns learned from previous executions of the SUT; and 2) knowledge gained from analyzing thousands of similar programs. Evaluation results of our initial prototype are promising, with bugs being automatically detected in some real-world APIs.Ministerio de Economía y Competitividad BELI (TIN2015-70560-R)Ministerio de Ciencia, Innovación y Universidades RTI2018-101204-B-C21 (HORATIO)Ministerio de Educación, Cultura y Deporte FPU17/0407

A Dust Trap in the Young Multiple System HD 34700

This is the author accepted manuscript. The final version is available from the American Astronomical Society via the DOI in this recordMillimeter observations of disks around young stars reveal substructures indicative of gas pressure traps that may aid grain growth and planet formation. We present Submillimeter Array observations of HD 34700- two Herbig Ae stars in a close binary system (Aa/Ab, ∼0.25 AU), surrounded by a disk presenting a large cavity and spiral arms seen in scattered light, and two distant, lower mass companions. These observations include 1.3 mm continuum emission and the 12CO 2-1 line at ∼ 0. 005 (178 AU) resolution. They resolve a prominent azimuthal asymmetry in the continuum, and Keplerian rotation of a circumbinary disk in the 12CO line. The asymmetry is located at a radius of 155+11 −7 AU, consistent with the edge of the scattered light cavity, being resolved in both radius (72+14 −15 AU) and azimuth (FWHM = 64◦+8 −7 ). The strong asymmetry in millimeter continuum emission could be evidence for a dust trap, together with the more symmetric morphology of 12CO emission and small grains. We hypothesize an unseen circumbinary companion, responsible for the cavity in scattered light and creating a vortex at the cavity edge that manifests in dust trapping. The disk mass has limitations imposed by the detection of 12CO and non-detection of 13CO. We discuss its consequences for the potential past gravitational instability of this system, likely accounting for the rapid formation of a circumbinary companion. We also report the discovery of resolved continuum emission associated with HD 34700B (projected separation ∼ 1850AU), which we explain through a circumstellar disk.National Science Foundation (NSF

Vertical transmission of HIV from 2007 to 2018 in a reference university hospital in Rio de Janeiro

The aim of the study was to assess the factors associated with mother-to-child transmission (MTCT) of HIV. The study design is a retrospective cohort. The population consisted of 323 HIV-positive mothers and their newborns, attended at the Perinatal Nucleus/HUPE-UERJ, municipality of Rio de Janeiro, in the period of 2007-2018. The average age of mothers was 27 years (14-44), with 12.7% (41) of adolescents. The majority (66.8%) knew they were infected during pregnancy: 39.4% in the current pregnancy and 27.4% in a previous pregnancy. The incidence of MTCT was 2.7% in 2007-2009, 1% in 2010-2015 and 0 in 2016-2018. The viral load in the 3rd trimester of pregnancy was > 1.000 copies/mL or unknown in all mothers with positive newborns and in 19% (42/221) of mothers with negative newborns (p=0.003). The duration of antiretroviral use was > 4 weeks in 92.3% (264/286) of mothers with HIV-negative newborns and in 2 in the HIV-positive group (p=0.004). One of the 4 infected newborns and 2 of the negative ones did not use oral zidovudine (p=0.04). There was no association between amniorrhexis and MTCT (p=0.99), with the Apgar score in the 5th minute of life (p=0.96), with marital status (p=0.54), ethnicity (p=0.65), adolescence (p=0.42), mode of delivery (p=0.99), beginning of prenatal care (p=0.44) or with maternal comorbidities (p=0.48). The conclusion of the study points out that the main factors associated with MTCT are the elevated maternal viral load in the 3rd trimester, the time of use of ART and the non-administration of zidovudine for the newborns

Introduction: Landslides in Coastal and Submarine Environments

Proceedings of World Landslide Forum 3, 2-6 Jjune 2014, Beijing.-- 4 pagesLack of direct observations and restricted access limits our current knowledge about submarine and coastal landslides. Open research questions remain regarding landslide recurrence rates, trigger mechanisms, failure dynamics, their impact on coastal and seafloor infrastructure and their role in causing subsequent effects such as tsunamis. The session C8 of the 3rd World Landslide Forum addresses causes and consequences of hazardous mass movements in coastal and marine areas. The session highlights the role of innovative marine-geophysical, -geological, and –geotechnical surveys and site-investigation techniques in coastal and subaquatic landslide research, hazard assessment and mitigation. This introductory paper to the C8 section of the WLF3 volume provides a brief overview on the general topic and presents the compendium of seven papers contributed by landslide experts from different parts of the world to document detailed case studies on coastal and submarine landslides as well as landslide tsunamisThis session is co-sponsored by the International Geoscience Program “Earth’s continental Margins: Assessing the Geohazard from submarine Landslides” IGCP-585, funded by the International Union of Geological Science (IUGS) and the United Nations Educational, Scientific and Cultural Organization (UNESCO)Peer Reviewe

Preparation and characterization of [HgP(C6F5)(2)(2)], [Hg(mu-P(C6F5)(2))W(CO)(5)(2)], and [Hg(mu-P(CF3)(2))W(CO)(5)(2)] and the X-ray crystal structure of [Hg(mu-P(C6F5)(2))W(CO)(5)(2)]center dot 2DMF

Hoge B, Herrmann T, Thosen C, Pantenburg I. Preparation and characterization of [HgP(C6F5)(2)(2)], [Hg(mu-P(C6F5)(2))W(CO)(5)(2)], and [Hg(mu-P(CF3)(2))W(CO)(5)(2)] and the X-ray crystal structure of [Hg(mu-P(C6F5)(2))W(CO)(5)(2)]center dot 2DMF. INORGANIC CHEMISTRY. 2003;42(17):5422-5428