Bronchospasm: Not always the cause for tight bag

Gardnerella vaginalis does not always cause bacterial vaginosis.

TO THE EDITOR—Schwebke et al [1] present a conceptual model arguing the case for Gardnerella vaginalis as the primary etiological agent of bacterial vaginosis (BV). The model posits that G. vaginalis is a sexually acquired pathogen that elicits BV via the establishment of a bacterial biofilm on the vaginal epithelium, aided by synergistic associations with vaginal anaerobes and competitive inte...

Towards tight bounds on theta-graphs: More is not always better

We present improved upper and lower bounds on the spanning ratio of θgraphs with at least six cones. Given a set of points in the plane, a θ-graph partitions the plane around each vertex u into m disjoint cones, each having aperture θ = 2π/m, and adds an edge in each cone to the vertex whose projection onto the bisector of that cone is closest to u. We show that for any integer k ≥ 1, θ-graphs ...

Shortness of breath: Patient history not always indicative of the cause

This is a 78 year old male with a past medical history of coronary artery disease (CAD), chronic obstructive pulmonary disease (COPD), hypertension (HTN), and gastroesophageal reflux disorder (GERD) who presented to the emergency room with worsening shortness of breath (SOB) and low-grade fevers for one week prior to admission. He was originally diagnosed with healthcare associated pneumonia (H...

Not Always Buried Deep

KLP Not Always Efficient

The size of the nondominated set of a vector set is greatly dependent on the size of the original vector set N and the dimension of the vector M . Theoretical analysis shows that when M = O(log N) the original set has big nondominated set which may be the original set itself, and in the case M = O(log N), a classical algorithm (KLP) for finding nondominated set has complexity of KLP higher than...