Ricardo Araújo

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Force/Torque sensing is very important for several automatic and industrial robotic applications. Basically, if precise control of the forces that arise from contact between tools and parts is required to successfully complete the automatic task, then a force/torque sensor is needed along with some force/torque control technique. In this paper we focus on(More)
Programming‐by‐demonstration (PbD) is the possibility to program a robot just by showing what it is supposed to do and how it should do it. This paper reports a collection of developments that enable users to program industrial robots using speech, several device interfaces, force control and code generation techniques. The reported system is explained in(More)
Purpose – The purpose of this paper is to present a CAD-based human-robot interface that allows non-expert users to teach a robot in a manner similar to that used by humans to teach each other. Another important issue addressed here has to do with how robots deal with uncertainty. Design/methodology/approach – Intuitive robot programming is achieved by(More)
BACKGROUND The authors provide a review of true aneurysms of the posterior communicating artery (PCoA). Three cases admitted in our hospital are presented and discussed as follows. CASE DESCRIPTIONS First patient is a 51-year-old female presenting with a Fisher II, Hunt-Hess III (headache and confusion) subarachnoid hemorrhage (SAH) from a ruptured true(More)
BACKGROUND The lateral supraorbital approach (LSO) provides access to a variety of pathologies including anterior and some posterior circulation aneurysms, sellar and suprasellar lesions, and anterior fossa tumors. Technical modifications of LSO improve the surgical exposure of the skull base. METHODS We retrospectively analyzed 73 consecutive patients(More)
Folie a trois is a syndrome characterized by the transfer of delusional ideas from one person to two other persons. This condition rarely ends in the murder of any involved and we are unaware of where the primary case had the diagnosis of acute psychosis in systemic lupus erythematosus (SLE). We present a case report of folie a trois resulting in murder,(More)
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