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2,121
Networking low-power energy harvesting devices: Measurements and algorithms
- IN PROC. OF IEEE INFOCOM, SHANGHAI,CHINA,APR.2011
, 2010
"... Recent advances in energy harvesting materials and ultra-low-power communications will soon enable the realization of networks composed of energy harvesting devices. These devices will operate using very low ambient energy, such as indoor light energy. We focus on characterizing the energy availabi ..."
Abstract
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Cited by 60 (7 self)
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availability in indoor environments and on developing energy allocation algorithms for energy harvesting devices. First, we present results of our long-term indoor radiant energy measurements, which provide important inputs required for algorithm and system design (e.g., determining the required battery sizes
Energy Aware Routing for Low Energy Ad Hoc Sensor Networks
, 2002
"... The recent interest in sensor networks has led to a number of routing schemes that use the limited resources available at sensor nodes more efficiently. These schemes typically try to find the minimum energy path to optimize energy usage at a node. In this paper we take the view that always using lo ..."
Abstract
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Cited by 428 (5 self)
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lowest energy paths may not be optimal from the point of view of network lifetime and long-term connectivity. To optimize these measures, we propose a new scheme called energy aware routing that uses sub-optimal paths occasionally to provide substantial gains. Simulation results are also presented
Clouds and the Earth’s Radiant Energy System (CERES): An earth observing system experiment
"... CERES objectives include the following. 1) For climate change analysis, provide a continuation of the Earth Radiation Budget Experiment (ERBE) record of radiative fluxes at the top-of-the-atmosphere (TOA), analyzed using the same techniques as the existing ERBE data. 2) Double the accuracy of estima ..."
Abstract
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Cited by 178 (13 self)
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of estimates of radiative fluxes at TOA and the earth’s surface; 3) Provide the first long-term global estimates of the radiative fluxes within the earth’s atmosphere. 4) Provide cloud property estimates collocated in space and time that are consistent with the radiative fluxes from surface to TOA. In order
Data Gathering Algorithms in Sensor Networks Using Energy Metrics
- IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS
, 2002
"... Sensor webs consisting of nodes with limited battery power and wireless communications are deployed to collect useful information from the field. Gathering sensed information in an energy efficient manner is critical to operating the sensor network for a long period of time. In [12], a data collecti ..."
Abstract
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Cited by 226 (2 self)
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-heads chosen to transmit to the base station, LEACH achieves a factor of 8 improvement compared to direct transmissions, as measured in terms of when nodes die. An improved version of LEACH, called LEACH-C, is presented in [14], where the central base station performs the clustering to improve energy
The ultra-wide bandwidth indoor channel: from statistical model to simulations
- IEEE J. SEL. AREAS COMMUN
, 2002
"... We establish a statistical model for the ultra-wide bandwidth (UWB) indoor channel based on an extensive measurement campaign in a typical modern office building with 2-ns delay resolution. The approach is based on the investigation of the statistical properties of the multipath profiles measured i ..."
Abstract
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Cited by 185 (13 self)
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We establish a statistical model for the ultra-wide bandwidth (UWB) indoor channel based on an extensive measurement campaign in a typical modern office building with 2-ns delay resolution. The approach is based on the investigation of the statistical properties of the multipath profiles measured
Global and regional climate changes due to black carbon,
- Nat. Geosci.,
, 2008
"... Figure 1: Global distribution of BC sources and radiative forcing. a, BC emission strength in tons per year from a study by Bond et al. Full size image (42 KB) Review Nature Geoscience 1, 221 -227 (2008 Black carbon in soot is the dominant absorber of visible solar radiation in the atmosphere. Ant ..."
Abstract
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Cited by 228 (5 self)
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forcing at the TOA and the larger negative forcing at the surface. We can not resort to observed rainfall trends to infer the net anthropogenic effect on global rainfall as long-term rainfall measurements are only available for land regions. Regional climate effects We have just begun to comprehend
Visibility of Radiant Energy
"... one of the most enduring projects ever undertaken at NBS, research into the physical description of human vision. The principal result of this work was the “visibility curve, ” a quantified model of how well a typical person can see the different wavelengths (colors) of light. Today this model funct ..."
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. Light is a form of radiant energy, with a power that can be measured in watts, but the connection between this physical description (or the “mechanical ” description as it was
RADIANT SLAB COOLING: A CASE STUDY OF BUILDING ENERGY PERFORMANCE
"... This paper introduces a case study of an existing multi-floor radiant slab cooling system through simulation and field measurements. EnergyPlus was selected based on a review of currently-available simulation programs. Real weather data were used and the model was calibrated with metered energy data ..."
Abstract
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Cited by 1 (0 self)
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data. Simulated energy uses and indoor thermal conditions were compared with measured data to evaluate comfort conditions and operations. The exercise revealed problems in the existing EnergyPlus low-temperature radiant cooling/heating module and some uncertainties in the simulation model. Major
Behavioral theories and the neurophysiology of reward,
- Annu. Rev. Psychol.
, 2006
"... ■ Abstract The functions of rewards are based primarily on their effects on behavior and are less directly governed by the physics and chemistry of input events as in sensory systems. Therefore, the investigation of neural mechanisms underlying reward functions requires behavioral theories that can ..."
Abstract
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Cited by 187 (0 self)
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-directed approach behavior, and decision making under uncertainty. Individual neurons can be studied in the reward systems of the brain, including dopamine neurons, orbitofrontal cortex, and striatum. The neural activity can be related to basic theoretical terms of reward and uncertainty, such as contiguity
Characterization of ultra-wide bandwidth wireless indoor channels: a communication-theoretic view
- IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
, 2002
"... An ultra-wide bandwidth (UWB) signal propagation experiment is performed in a typical modern laboratory/office building. The bandwidth of the signal used in this experiment is in excess of 1 GHz, which results in a differential path delay resolution of less than a nanosecond, without special proces ..."
Abstract
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Cited by 125 (12 self)
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of measured waveforms are detected using a maximum-likelihood detector. Energy capture as a function of the number of single-path signal correlators used in UWB SRake receiver provides a complexity versus performance tradeoff. Bit-error-probability performance of a UWB SRake receiver, based on measured
Results 1 - 10
of
2,121
