Anti-GAD Antibody-associated Syndrome Presenting with Limb Myoclonus.

Background: The clinical spectrum of anti-glutamic acid decarboxylase (GAD) antibody-associated neurologic syndromes is expanding, with focal, generalized, and atypical forms. Case Report: We describe a 59-year-old female showing continuous right lower limb myoclonus and mild encephalopathy. These symptoms started 2 weeks prior to evaluation. The patient had great improvement with intravenous steroids. An autoantibody panel was positive for anti-GAD. Discussion: Various clinical manifestations, including myoclonus, may relate to anti-GAD antibodies. The treatment options available include symptomatic drugs, intravenous immunoglobulin, steroids, and other immunosuppressant agents.

Performance Analysis of ToA-Based Positioning Algorithms for Static and Dynamic Targets with Low Ranging Measurements.

Indoor Positioning Systems (IPSs) for emergency responders is a challenging field attracting researchers worldwide. When compared with traditional indoor positioning solutions, the IPSs for emergency responders stand out as they have to operate in harsh and unstructured environments. From the various technologies available for the localization process, ultra-wide band (UWB) is a promising technology for such systems due to its robust signaling in harsh environments, through-wall propagation and high-resolution ranging. However, during emergency responders' missions, the availability of UWB signals is generally low (the nodes have to be deployed as the emergency responders enter a building) and can be affected by the non-line-of-sight (NLOS) conditions. In this paper, the performance of four typical distance-based positioning algorithms (Analytical, Least Squares, Taylor Series, and Extended Kalman Filter methods) with only three ranging measurements is assessed based on a COTS UWB transceiver. These algorithms are compared based on accuracy, precision and root mean square error (RMSE). The algorithms were evaluated under two environments with different propagation conditions (an atrium and a lab), for static and mobile devices, and under the human body's influence. A NLOS identification and error mitigation algorithm was also used to improve the ranging measurements. The results show that the Extended Kalman Filter outperforms the other algorithms in almost every scenario, but it is affected by the low measurement rate of the UWB system.

Registro de hospedeiro de Austrostelis Michener & Griswold (Hymenoptera: Megachilidae) e de sua ocorrência na caatinga / Record of Austrostelis Michener & Griswold host (Hymenoptera: Megachilidae) and of its occurrence in the semi-arid caatinga region

É registrada a emergência de espécimes da abelha cleptoparasita Austrostelis catamarcencis (Schrottky) de ninhos de Epanthidium tigrinum (Schrottky) coletados na parte central da região semi-árida do Nordeste do Brasil, no domínio da Caatinga.

It is recorded the emergence of specimens of the cleptoparasitic bee Austrostelis catamarcencis (Schrottky) from nests of Epanthidium tigrinum (Schrottky) in the central area of theCaatinga, the semi-arid region from Northeastern Brazil.