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Voltage Collapse and ODE Approach to Power Flows: Analysis of a Feeder Line with Static Disorder in Consumption/Production
Voltage Collapse Consumption/Production Feeder Line Static Disorder
2011/9/15
We consider a model of a distribution feeder connecting multiple loads to the sub-station. Voltage is controlled directly at the head of the line (sub-station), however,voltage anywhere further down t...
Modeling Social Networks with Node Attributes using the Multiplicative Attribute Graph Model
Modeling Social Networks Node Multiplicative Attribute Graph Model
2011/9/15
Networks arising from social, technological and natural domains exhibit rich connectivity patterns and nodes in such networks are often labeled with attributes or features. We address the question of ...
Clustering with Prototype Extraction for Census Data Analysis
Prototype Extraction Clustering Census Data Analysis
2011/9/15
Not long ago primary census data became available to publicity. It opened qualitatively new perspectives not only for researchers in demography and sociology, but also for those people, who somehow fa...
Preliminary Results from Integrating Compton Photon Polarimetry in Hall A of Jefferson Lab
Integrating Compton Photon Polarimetry Hall A of Jefferson Lab
2011/9/6
A wide range of nucleon and nuclear structure experiments in Je erson Lab's Hall A require precise, continuous measurements of the polarization of the electron beam. In our Compton polarimeter, electr...
Magnetocardiography with a modular spin-exchange relaxation free atomic magnetometer array
Instrumentation and measurement, Atomic and molecular physics, Medical physics, Biological physics
2011/9/6
We present a portable four-channel atomic magnetometer array operating in the spin exchange relaxation-free regime. The magnetometer array has several design
features intended to maximize its suitabi...
vdW-DF Study of energetic, structural, and vibrational properties of small water clusters and ice Ih
vdW-DF small water clusters ice Ih
2011/9/15
We present results for a density functional theory study of small water clusters and hexagonal ice Ih, using the van der Waals density functional (vdW-DF). In particular, we examine energetic,structur...
Percolation in Interdependent and Interconnected Networks: Abrupt Change from Second to First Order Transition
Cascading failures, Percolation, Coupled networks, Phase transition
2011/9/5
Robustness of two coupled networks system has been studied only for dependency coupling (S. Buldyrev et. al., Nature, 2010) and only for connectivity coupling (E. A. Leicht and R. M. D’Souza, arxiv:09...
Human as Real-Time Sensors of Social and Physical Events: A Case Study of Twitter and Sports Games
Real-Time Sensors Social Physical Events Twitter Sports Games Case
2011/9/14
In this work, we study how Twitter can be used as a sensor to detect frequent and diverse social and physical events in real-time. We devise efficient data collection and event recognition solutions t...
Historic data from many countries demonstrate that on average no more than 50-70% of the uranium in a deposit could be mined. An analysis of more recent data from Canada and Australia leads to a minin...
Unified mean-field approach to voter-like models on networks
Complex networks -Ordering dynamics -Voter models-Mean-field theory
2011/9/5
We propose a generalized framework for the study of voter models in complex networks at the the heterogeneous mean-field (HMF) level that (i) yields a unified picture for existing copy/invasion proces...
Measurement of airborne 131I, 134Cs, and 137Cs nuclides due to the Fukushima reactors accident in air particulate in Milan (Italy)
Airborne radioactivity, Fukushima accident, 131I, 137Cs and 134Cs
2011/9/5
After the earthquake and the tsunami occurred in Japan on 11th March 2011, four of the Fukushima reactors had released in air a large amount of radioactive isotopes that had been diffused all over the...
One of the greatest discoveries of modern times is that of the expanding Universe, almost invariably attributed to Hubble (1929). What is not widely known is that the original treatise by Lema顃re (192...
On Kinds of Indiscernibility in Logic and Metaphysics
Logic and Metaphysics Hilbert-Bernays account
2011/9/2
Using the Hilbert-Bernays account as a spring-board, we rst de ne four ways in which two objects can be discerned from one another, using the non-logical vocabulary of the language concerned. (These ...
Evidence of coexistence of change of caged dynamics at Tg and the dynamic transition at Td in solvated proteins
hydrated protein, solvated proteins, aqueous mixtures, carbohydrates, caged dynamics, glass transition
2011/9/14
Mössbauer spectroscopy and neutron scattering measurements on proteins embedded in solvents including water and aqueous mixtures have emphasized the observation of the distinctive temperature dep...
Real complex systems are inherently time-varying. Thanks to new communication systems and novel technologies, it is today possible to produce and analyze social and biological networks with detailed i...