This paper studies and designs a symmetric 160 Gb/s and improves the capacity of time and wavelength-division multiplexed passive optical network (TWDM-PON) for nextgeneration passive optical network stage 2 (NG-PON2). Distributed feedback (DFB) laser diode and tunable modulated grating Y-branch (MG-Y) laser with tuning range about 14.4 are used for downstream and upstream direction respectivel...

OBJECTIVE This study aimed to evaluate epidemiological, clinical, laboratory, and neuroimaging features of 160 adult patients with tuberculous meningitis (TBM) according to "Thwaites' diagnostic index." METHODS The subjects of this retrospective study are the patients with TBM who were followed up between years 1998 and 2009 in a tertiary referral hospital. Diagnosis of TBM was based on clini...

Using a natural voting experiment in Switzerland that encompasses a 160-year period (1848–2009), we investigate whether a higher level of complexity leads to increased reliance on expert knowledge. We find that when more referenda are held on the same day, constituents are more likely to refer to parliamentary recommendations in making their decisions. This finding holds true even when we narro...

OBJECTIVE This study looks to compare the antidepressant efficacy and safety of a standardized extract of St John's wort with both placebo and fluoxetine. METHOD After a 1-week single-blind washout, patients with major depressive disorder diagnosed by Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition were randomized to 12 weeks of double-b...

Gerald Tesauro IBM Watson Research Center PO Box 704 Yorktown Heights, NY 10598 The issues of scaling and generalization have emerged as key issues in current studies of supervised learning from examples in neural networks. Questions such as how many training patterns and training cycles are needed for a problem of a given size and difficulty, how to represent the inllUh and how to choose usefu...

PURPOSE E-cadherin is a transmembrane glycoprotein with important roles in the maintenance of cervical squamous epithelium integrity. The purpose of this study was to investigate the relationship between E-cadherin-160 C/A polymorphism and cervical intraepithelial neoplasia (CIN). METHODS A case-control study was performed enrolling 70 CIN cases and 107 age-matched healthy controls. Each pati...