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Results 11 - 20
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126
Mechanisms and rates of bacterial colonization of sinking aggregates
- Appl Environ Microbiol
, 2002
"... Quantifying the rate at which bacteria colonize aggregates is a key to understanding microbial turnover of aggregates. We used encounter models based on random walk and advection-diffusion considerations to predict colonization rates from the bacteria’s motility patterns (swimming speed, tumbling fr ..."
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Cited by 18 (4 self)
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frequency, and turn angles) and the hydrodynamic environment (stationary versus sinking aggregates). We then experimentally tested the models with 10 strains of bacteria isolated from marine particles: two strains were nonmotile; the rest were swimming at 20 to 60 m s1 with different tumbling frequency (0
HEAT TRANSFER THROUGH VERTICAL CYLINDER IN STATIONARY FLUID
"... Natural convection heat transfer has been experimentally investigated for high Raleigh number by placing the cylindrical heating element in stationary water. The uniform heat flux has been applied to large L/D ratio in this experiment. The thermal behavior of this heating element has been found in g ..."
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Natural convection heat transfer has been experimentally investigated for high Raleigh number by placing the cylindrical heating element in stationary water. The uniform heat flux has been applied to large L/D ratio in this experiment. The thermal behavior of this heating element has been found
Stability of stationary and time-varying nongyrotropic particle distributions
, 1998
"... Abstract. The ubiquity of nongyrotropic particle populations in space plasmas warrants the study of their characteristics, in particular their stability. The unperturbed nongyrotropic distribution functions in homogeneous media without sources and sinks (closed phase space) must be rotating and time ..."
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Abstract. The ubiquity of nongyrotropic particle populations in space plasmas warrants the study of their characteristics, in particular their stability. The unperturbed nongyrotropic distribution functions in homogeneous media without sources and sinks (closed phase space) must be rotating
Sink Mobility for Data Collection in Wireless Sensor Network Life Cycle
"... Abstract- A wireless sensor network is a great number of nodes which are micro sensors able to collect and to transmit data in an autonomous way. The wireless sensor networks (WSNs) used in various fields: environmental monitoring, health, protection of the borders, industry, military applications, ..."
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, natural safety, transport, disasters etc. In recent studies undertaken, the sensor nodes are regarded as stationary. This mobility relates to either a sensor node, or an actuator in the case of the networks of sensors/actuators, or the point of collection called Sink. We were interested in the mobility
Improving Non-Stationary Data Retrieval in Wireless Sensor Networks
"... Wireless sensor networks provide an effective tool for acquiring sensor measurements across a large area. Devices in a sensor field can automatically configure themselves into a working network, ready to collect data. The challenge is to collect that data in a timely and power-efficient manner. In s ..."
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. In some environments, a data collection device (sink) may need to travel periodically through the field to gather data because keeping a local storage system is impractical. The goal is for this moving sink to gather the most data in the shortest amount of time, using the least amount of inter
ANNEX 3 Methodological Descriptions for Additional Source or Sink Categories 3.1. Methodology for Estimating Emissions of CH4, N2O, and Indirect Greenhouse Gases from Stationary Combustion
"... Methane (CH 4) and nitrous oxide (N 2O) emissions from stationary combustion were estimated using IPCC emission factors and methods. Estimates were obtained by multiplying emission factors—by sector and fuel type—by fossil fuel and wood consumption data. This “top-down ” methodology is characterized ..."
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Methane (CH 4) and nitrous oxide (N 2O) emissions from stationary combustion were estimated using IPCC emission factors and methods. Estimates were obtained by multiplying emission factors—by sector and fuel type—by fossil fuel and wood consumption data. This “top-down ” methodology
2 Additional Source or Sink Categories 3 3.1. Methodology for Estimating Emissions of CH4, N2O, and Indirect 4 Greenhouse Gases from Stationary Combustion
"... 7 emission factors and methods. Estimates were obtained by multiplying emission factors—by sector and fuel type—by 8 fossil fuel and wood consumption data. This “top-down ” methodology is characterized by two basic steps, described 9 below. Beginning in this inventory, the electric power sector util ..."
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Energy consumption from stationary combustion activities was grouped by sector: industrial, commercial, 14 residential, electric power, and U.S. territories. For CH4 and N2O from industrial, commercial, residential, and U.S. 15 territories, estimates were based upon consumption of coal, gas, oil
TTDD: A Two-tier Data Dissemination Model for Large-scale Wireless Sensor Networks
- In Proceedings of International Conference on Mobile Computing and Networking (MobiCom
, 2003
"... networking. It suggests that information about each mobile sink's location be continuously propagated through the sensor field to keep all sensor nodes updated with the direction of forwarding future data reports. Unfortunately frequent location updates from multiple sinks can lead to both exce ..."
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Cited by 16 (1 self)
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grid structure which enables mobile sinks to continuously receive data on the move by flooding queries within a local cell only. TTDD's design exploits the fact that sensor nodes are stationary and location-aware to construct and maintain the grid structures with low overhead. We have evaluated
Hierarchical Routing Protocols in Wireless Sensor Networks
, 2012
"... In recent wireless sensor network research, using a mobile data center (sink) to collect data has shown the ability to decrease the overall energy expenditure of the sensor field. Before the introduction of mobile sinks, many different routing protocols were developed under the assumption of a stati ..."
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stationary sink. This work compares three such routing protocols, one hierarchical and two non-hierarchical, under the assumption of a mobile sink to determine which is best. The three protocols are tested against varying sink speed, node communication radius, and sensor field node populations. Different
2005 “Two Energy-Efficient Routing Algorithms for Wireless Sensor Networks
- In Proc. 4th International Conference on �etworking, IC
"... Abstract: Power Conservation is one of the most important challenges in wireless sensor networks. In this paper, we present two minimum-energy routing algorithms. Our main goal is to reduce power consumed and prolong the lifetime of the network. The first protocol, named CODE: COordination-based Dat ..."
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Cited by 2 (0 self)
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SIDE: SInk cluster – based data Dissemination for sEnsor networks, addresses the sensor networks consisting of large number of stationary sinks. SIDE considers loosely resource-constrain of the sinks to ease the cost burden of sensor nodes. Our simulation results show that CODE and SIDE gain energy
Results 11 - 20
of
126
