The formalism of anomalous change detection, which was developed for finding unusual changes in pairs of images, is extended to sequences of more than two images. Extended algorithms based on RX, ...Chronochrome, and Hyper are presented for identifying the most anomalously changing pixels in a sequence of co-registered images. Experimental comparisons are performed both on real data with real anomalies and on real data with simulated anomalies.
An improved kinetic model for the Meinel bands of OH has been constructed from rate constants and Einstein A coefficients derived in recent laboratory experiments. Using a semiempirical ...parameterization of the state-to-state rate constants for OH(v) quenching by O2, the absolute OH(v) nightglow radiances are modeled to within the accuracies of the atmospheric constituent concentrations and the radiometric calibrations. Collisional quenching is found to be predominantly multiquantum at high v but single-quantum at low v. (Author)
We Need More Ocean Data Adler, Steven B; Hudson, Andrew; Vousden, David
Sea Technology,
03/2018, Volume:
59, Issue:
3
Trade Publication Article
For hundreds of years, vast amounts of wealth have been extracted from the ocean without knowing much about the ecosystems that provide such bounty. To fill this gap--and sustain the ocean and the ...people that rely on it to feed their families and support their livelihoods--the world needs more ocean data. And we need it now. The ocean represents most of Earth's surface and living space--but is the least explored part of our planet.
The PHENIX online control system is responsible for the configuration, control and monitoring of the PHENIX detector data acquisition system and ancillary control hardware, and the collection and ...archiving of the event data. The detector consists of 11 distinct subsystems, which are distributed physically and partitioned logically while ultimately being combined into a single operating unit. The online system consists of a large number of embedded commercial and custom processors as well as custom software processes which are involved in the collection, monitoring and control of the detector and the event data. These processing elements are distributed over a diverse set of computing platforms including VME based Power PC controllers, Pentium based NT systems, and SUN Solaris SPARC processors. CORBA has been adopted as the standard communication mechanism for PHENIX online system. This paper will describe the design, implementation and use of CORBA to achieve a uniform and platform independent control environment while providing for the access, control and monitoring of the online detector elements over the distributed and diverse control environment. Synchronous and asynchronous communication issues will be discussed as well as the development of CORBA compliant components which were developed to achieve client/server isolation and deterministic system behavior. The use and interaction between JAVA based clients and C++ based CORBA servers to further achieve a platform neutral environment will be presented.
While some dealers are nervous, others may have reason to cheer. "Spreads remain dramatically below their pre-decimal levels," said Nasdaq deputy economist Frank Hatheway. "In providing faster ...executions and price discovery, SuperSOES is taking out the narrow inside more quickly yet SuperSOES has resulted in no increase in effective spreads. That represents the direct cost to investors."
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