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A polynomial-time algorithm for determining quadratic Lyapunov functions for nonlinear systems
Nonlinear systems quadratic lyapunov function and convex programming function
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2015/8/12
We consider nonlinear systems dx/dt=f(x(t)) where Df(x(t)) is known to lie in the convex hull of L n times n matrices A_1,ldots,A_L. For such systems, quadratic Lyapunov functions can be determined us...
Robust optimal control of linear discrete-time systems using primal-dual interior-point methods
Robust control application model linear discrete
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2015/8/11
This paper describes how to efficiently solve a robust optimal control problem using recently developed primal-dual interior-point methods. Among potential applications are model predictive control. T...
Rainfall-Runoff Modeling for an Experimental Watershed of Western Greece Using Extended Time-Area Method and GIS
Rainfall-runoff modeling Forested watershed Time-area method Flow velocity
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2015/8/11
In this study, an effort was made to simulate the transformation of rainfall into runoff, in a small experimental mountainous-forested watershed in western Greece. The main objective was the productio...
AROME-WMED,a real-time mesoscale model designed for the HyMeX special observation periods
AROME-WMED real-time mesoscale model designed HyMeX special observation periods
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2015/8/6
During autumn 2012 and winter 2013, two special observation periods (SOPs) of the HYdrological cycle in the Mediterranean EXperiment (HyMeX) took place. For the preparatory studies and to support the ...
Coastal Ocean Modeling: Processes and Real-Time Systems
Coastal Ocean Modeling Real-Time Systems
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2015/8/5
The coastal oceans are among the most challenging marine environments in the world. They are subject to the combined geometrical constraints of irregular coastlines and highly variable (steep and tall...
Long-Term Real-Time Coastal Ocean Observation Networks
Coastal Ocean Observation Long-Term Real-Time
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2015/8/5
Oceanographers are well acquainted with the challenges of working in an undersampled ocean, Observations are often sparse, difficult or expensive to acquire, and may not even be available to the sea-g...
NEPTUNE: Real-Time Ocean and Earth Sciences at the Scale of a Tectonic Plate
Real-Time Ocean Earth Sciences
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2015/8/5
Since the Challenger Expedition in the 1870s, oceanographers have explored and sampled across two-thirds of our planet using ships as primary observational platforms. In the past several decades, sate...
The Right Program at the Right Time: A NOPPortunity
NOPPortunity Right Program
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2015/8/5
The first "P" in the NOPP acronym has a double meaning. When the U.S. Congress enacted the National Ocean Partnership Act, in 1996, they saw two opportunities for partnering: between government agenci...
Real-Time Data Assimilative Modeling on Georges Bank
Real-Time Data Assimilative Georges Bank
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2015/8/4
Real-time oceanic forecasts were constructed at sea on Georges Bank during Spring 1999. Ship- and shorebased computations were combined to deliver daily 3-day forecasts to shipboard scientists for int...
Navy Real-time Global Modeling Systems
Global Modeling Systems Systems
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2015/7/31
The global ocean has its own "weather" phenomena, although with greatly different time and space scales compared to the atmosphere. Oceanic mesoscale eddies are typically about 100 km in diameter whic...
Scripps Time Line
Scripps Time Line
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2015/7/31
The University of California provides Ritter and students with $200 to establish a summer instruc- tion program in marine zoology. Ritter purchases a tent and a few instruments and sets up a seaside l...
GEOGRAPHIC INFORMATION ISSUES ASSOCIATED WITH SOCIOECONOMIC MODELLING FROM NIGHT-TIME LIGHT REMOTE SENSING DATA
Remote Sensing GIS Human Settlement Urban Mapping Modeling Economy
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2015/7/29
The ability to model socio-economic parameters from remote sensing data sources is an important element in addressing the data
gap that currently exists for linking human and physical systems in Ear...
So Many Microbes, So Little Time, and So Little Money: Needs and Challenges in Developing a Global Network of Biological Resource Centers
Time Money Microbes
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2015/7/29
When microbiologists first applied the tools of their trade to the oceans of the world, they quickly learned that water samples contained variable numbers of bacteria, depending on sample location and...
Time is of the Essence
Time the Essence
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2015/7/24
From the age of the Earth itself, to the rates at which mountains erode and species evolve, time and rates of change have been the "holy grail" of geologic knowledge. In the study of sedimentary layer...
Eight Bells—Time to Change the Watch
Eight Bells Time Change the Watch
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2015/7/24
Two years ago, I wrote my first President's letter for inclusion in Oceanography. The two years has flown by; my term as TOS President coincided almost exactly with my career-capping appointment as Ac...