نتایج جستجو برای: broadband
تعداد نتایج: 24542 فیلتر نتایج به سال:
This standard specifies the air interface of fixed (stationary) point-to-multipoint broadband wireless access systems providing multiple services. The medium access control layer is capable of supporting multiple physical layer specifications optimized for the frequency bands of application. The standard includes a particular physical layer specification applicable to systems operating between ...
In the United States, there are several federal agencies interested in the effects of UV radiation, which has resulted in the establishment of UV monitoring programs each with their own instrumentation and sites designed to address their specific needs. In 1993, participating agencies of the U.S. Global Change Research Program organized a UV Panel for coordinating the different agencies’ progra...
Hot charge carrier extraction from metallic nanostructures is a very promising approach for applications in photocatalysis, photovoltaics, and photodetection. One limitation is that many metallic nanostructures support a single plasmon resonance thus restricting the light-to-charge-carrier activity to a spectral band. Here we demonstrate that a monolayer of plasmonic nanoparticles can be assemb...
Malaysia, in its effort to achieve its Vision 2020, launched a National Broadband Pelan (NBP) in 2004; subsequently Broadband Implementation Plan was formulated in 2007 as an effort and strategy by the government to provide and upgrade the ICT infrastructure and broadband facilities throughout Malaysia. The initiative to bridge digital divide is encapsulated in two strategic foundations of the ...
The molecular dynamics of poly(2-vinyl-pyridine) (P2VP) brushes is measured by Broadband Dielectric Spectroscopy (BDS) in a wide temperature (250 K to 440 K) and broad spectral (0.1 Hz to 1 MHz) range. This is realized using nanostructured, highly conductive silicon electrodes being separated by silica spacers as small as 35 nm. A "grafting-to"-method is applied to prepare the P2VP-brushes with...
In many help systems, users are either distracted with a constant barrage of help or have to stop working on the task at hand and explicitly search for help. In this paper, we propose intuitive methods to present on-demand, in-place help in mixed reality interfaces. In these interfaces, users interact with virtual objects that are superimposed on the real world by manipulating physical cards. W...
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