BACKGROUND Since 1999 our institution has adopted offpump coronary artery bypass grafting (OPCABG) for treating the majority of our patients. In the year 2001, 96% of our isolated coronary bypass procedures were performed on the beating heart. Routine use of intracoronary shunts in OPCABG has been a controversial topic. We use routine intracoronary shunting in all cases to maintain distal perfu...

The future of many companies will depend to a large extent on their ability to initiate techniques that bring schedules, performance, tests, support, production, life-cycle-costs, reliability prediction and quality control into the earliest stages of the product creation process. Important questions for an engineer who is responsible for the quality of electronic parts such as printed circuit b...

A partir da aproximação com um campo de pesquisas ainda inicial, discute-se neste artigo a menstruação como tema tecnopolítico, considerando formação grupos ativismo menstrual em países sul-americanos e o crescente extrativismo dados biológicos fisiológicos que ocorre por meio aplicativos móveis para monitoramento do ciclo menstrual. O menstruapp Flo, serve experimental essa discussão na qual “...

We present an algorithm for fast stochastic gradient descent that uses a nonlinear adaptive momentum scheme to optimize the late time convergence rate. The algorithm makes effective use of curvature information, requires only O(n) storage and computation, and delivers convergence rates close to the theoretical optimum. We demonstrate the technique on linear and large nonlinear backprop networks...

Some believe that abortion is wrong because it harms the fetus by depriving it of its future. Dean Stretton rejects his argument. He claims that the harm of death is not a sufficient source of the right to life and that, even if it were, a fetus cannot be seriously harmed by being deprived of its future. In this article I critically assess Stretton’s arguments for each of these claims and find ...

Adenocarcinoma in Barrett's esophagus has been increasing in incidence at a rapid rate for more than two decades. Cyclooxygenase (COX)-2 appears to play an important role in gastrointestinal carcinogenesis, and COX-2 overexpression has been demonstrated both in esophageal adenocarcinomas and in the metaplastic epithelium of Barrett's esophagus. The aim of our study was to determine whether sele...