Self-Consistent Modeling of Gravitational Theories beyond General Relativity.

The majority of extensions to general relativity (GR) display mathematical pathologies-higher derivatives, character change in equations that can be classified within partial differential equation theory, and even unclassifiable ones-that cause severe difficulties to study them, especially in dynamical regimes. We present here an approach that enables their consistent treatment and extraction of physical consequences. We illustrate this method in the context of single and merging black holes in a highly challenging beyond GR theory.

Analysis of government agencies and stakeholders' twitter communications during the first surge of COVID-19 in Brazil.

Background: Official authorities are in charge of communicating with the public in a consistent and coherent manner. The impact of social media on managing the coronavirus 2019 (COVID-19) pandemic potentially influenced social behavior in Brazil.

Objective: Using Twitter, this study analyzes communications about the COVID-19 pandemic from official agencies of the Brazilian government and key public sector decision-makers.

As trials go by: Effects of 2-AFC item repetition on statistical learning performance.

One of the most popular tasks used to test statistical learning (SL) involves asking participants to identify which of two stimuli, a triplet presented during the previous familiarization phase versus a new sequence made of the same stimuli never presented together, is more familiar based on the stream presented before, that is, to perform a two-alternative forced-choice (2-AFC) task. Despite the widespread use of this task, it has come under increasing criticism in current cognitive research due to psychometric flaws. A common practice to improve SL measurement involves increasing the number of 2-AFC trials by presenting the same items (triplets and foils) several times during the test phase.

Immunotherapy with nivolumab for the treatment of soft tissue sarcoma with pulmonary metastasis: A case report.

Sarcomas are an unusual group of tumors, accounting for ~1% of cancer in adults. Immunotherapy has been shown to be a potential therapeutic option for the management of patients with cancer. However, there is still insufficient information on the action of immunotherapy on sarcomas.