We review several approaches that have been used to estimate ocean surface gravity wavenumbers from wave-resolving remotely sensed image sequences. Two fundamentally different approaches that utilize these data exist. A power spectral density approach identifies wavenumbers where image intensity variance is maximized. Alternatively, a cross-spectral correlation approach identifies wavenumbers where...
In this paper the fundamental concept of ring
amplification is introduced and explored. Ring amplifiers enable
efficient amplification in scaled environments, and possess the
benefits of efficient slew-based charging, rapid stabilization,
compression-immunity (inherent rail-to-rail output swing),
and performance that scales with process technology. A basic
operational theory is established, and...
A noise-shaped pipelined ADC is presented in this paper. A minimal complexity ΔΣ modulator in
the first two sub-ADCs and residue feedback in the latter stages lead to high-order noise shaping. This
also leads to reduced sensitivity to analog imperfections in the front-end stage. Implemented in 0.18μ m
CMOS, the...
The Moderate Resolution Imaging Spectroradiometer (MODIS) will add a significant new capability for investigating the 70% of the Earth's surface that is covered by oceans, in addition to contributing to the continuation of a decadal scale time series necessary for climate change assessment in the oceans. Sensor capabilities of particular...
Identifying coherent sub-graphs in networks is important
in many applications. In power systems, large systems
are divided into areas and zones to aid in planning and control
applications. But not every partitioning is equally good for
all applications; different applications have different goals, or
attributes, against which solutions should be...
In this work, I address foundational concerns at the interface of institutions, governance structure, transaction costs, and efficiency in public-private contracting. Following transaction cost economic perspective, I build and justify the theoretical models explaining that institutions may affect the economic performance of public-private contracting through the effect of transaction costs....
Existing pattern recognition and classification
algorithms in computer vision require vast amounts of
computations on input data. As a result, memory access time
is a critical parameter in system performance. Tremendous
parallelism in structure and algorithm is required for the
system to operate in real-time. A preprocessing structure
for qualitative...
Until a few years ago, wireless-capable laptops were considered novelties by many. It is now hard to find a laptop or a hand-held computing device that is not wireless-ready. As wireless devices are becoming commodities, they have also become an indispensable part of the modern society. Not surprisingly, research in...
The US military is evaluating the capabilities of emerging technologies based on IEEE 802.16 standard as a potential commercial off-the-shelf solution to support the communication requirements of the future war.
In the last few years, development in military and telecommunication industries have focused on an intensive use of broadband systems,...
The purpose of this study was to design and to implement
a practical Ethernet Local Area Network (LAN)
board for the Macintosh II computer system. A survey
of the literature provided a general definition of
LANs, a reference model for network layers, specifications
for an Ethernet LAN, and information on...