In augmented reality diffractive waveguide technology, the light field needs to be collimated before being transmitted into waveguide. Conventional schemes usually require additional collimating optics collimate from micro-image source and guide it in-coupling elements. order meet of head-mounted devices further miniaturize equipment, this paper proposes a device that combines collimation coupl...

Online news agents provide commenting facilities for their readers to express their opinions or sentiments with regards to news stories. The number of user supplied comments on a news article may be indicative of its importance, interestingness, or impact. We explore the news comments space, and compare the log-normal and the negative binomial distributions for modeling comments from various ne...

Materials and methods DCE-CT images of 33 patients, with recurrent/metastatic NPC treated with pazopanib, were analyzed to derive tumour blood flow, fractional intravascular blood volume, fractional extracellular-extravascular volume, and permeability surface area product. To each parametric map, textural analysis using multiple parameters based on co-occurrence matrix, neighbourhood gray tone ...

We test the implications of a model of multi-asset speculative trading in which liquidity differentials between on-the-run and off-the-run U.S. Treasury bonds ensue from endowment shocks in the presence of two realistic market frictions—information heterogeneity and imperfect competition among informed traders—and a public signal. Our evidence suggests that (i) off/on-the-run liquidity differen...

The study of chemical fun-ofl' from. land under different kinds of use and managclnent is a high priority with the Freshwater Section of the Ecology Divisiot;I of D.S.LR. The reason for this is simple, Chemical run-off must be a ma jar contribtttion to the"eutrophication of lakes by providing additional nutrients. Of course, chemical runoff occurs naturally, just as eutrophication of la1--es pr...