This paper presents a novel concept of half wavelength doubleridged half height rectangular waveguide resonator. The basic design consists of a double-ridged rectangular waveguide placed between two rectangular waveguide WR2300. The resonance frequency, bandwidth, Q factor etc. can be controlled by varying the ridge parameters such as ridge length, width, height, ridge gap width, ridge gap heig...

Let Π be a polar space of type Dn. Denote by Gδ(Π), δ ∈ {+,−} the associated half-spin Grassmannians and write Γδ(Π) for the corresponding half-spin Grassmann graphs. In the case when n ≥ 4 is even, the apartments of Gδ(Π) will be characterized as the images of isometric embeddings of the half-cube graph 1 2 Hn in Γδ(Π). As an application, we describe all isometric embeddings of Γδ(Π) in the ha...

Donors, governments, microfinance networks, and foundations have promoted housing microfinance (“HMF”) for a decade. Considerable operational experience has accrued on this practice over this time. Meanwhile, many emerging economies have grown rapidly, which has changed housing markets and the context for HMF. The moment, then, is auspicious for a re-examination of housing microfinance and its ...

In this issue of Clinical Infectious Diseases, Ohmit and colleagues report the results of an assessment of influenza vaccine effectiveness during the 2010–2011 influenza season, using a nonrandomized, prospectively followed cohort [1]. This intriguing study had 2 surprising findings. Remarkably, the rate of polymerase chain reaction–documented influenza illness was not substantially different b...

A 19 year old male, student, presented with a history of progressive loss of vision from right eye since one and half year and from the left eye since one year. The patient also complained of multiple episodes of generalized seizures three months back. Patient was diagnosed with tubercular choroiditis with chronic kidney disease with seizure disorder. The patient was evaluated but no intracrani...

Theories on visual change detection imply that attention is a necessary but not sufficient prerequisite for aware perception. Misguidance of attention due to salient irrelevant distractors can therefore lead to severe deficits in change detection. The present study investigates the mechanisms behind such perceptual errors and their relation to error processing on higher cognitive levels. Partic...

This paper reports the growth, mechanical, thermal and spectral properties of Cr(3+):MgMoO(4) crystals. The Cr(3+):MgMoO(4) crystals with dimensions up to 30 mm×18 mm×14 mm were obtained by TSSG method. The absorption cross-sections of (4)A(2)→(4)T(1) and (4)A(2)→(4)T(2) transitions are 12.94×10(-20) cm(2) at 493 nm and 7.89×10(-20) cm(2) at 705 nm for E//N(g), respectively. The Cr(3+):MgMoO(4)...