Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: September 2013
Authors: Jian Cheng Fang, Muhammad Kashif Siddiq, Wen Bo Yu
Simulation results show significant reduction in impact point dispersion with the attitude controlled trajectory as compared to uncontrolled trajectory.
Physical parameters and aerodynamic data of rocket for trajectory simulations have been obtained from [18].
Significant reduction in impact point dispersion of rocket has been observed and tabulated data obtained from Monte Carlo Simulations, are presented in Table 1, in the form of comparison of number of impacts in different ranges of radial error, for attitude controlled and uncontrolled trajectories of 50° launch elevation.
Online since: October 2006
Authors: Eugene E. Haller, Martin Hundhausen, Lothar Ley, Gerhard Pensl, Peter J. Wellmann, Ulrich Starke, Roland Püsche, Kurt Semmelroth, Patrick Desperrier, J.W. Ager
We find a reduction of the intensities of all valley-orbit Raman signals with increasing temperature and ascribe this reduction to the decreasing occupation of donor states.
Measured data (filled dots) are fitted by the superpositon of an energy-dependent background (free electrons), inelastic scattered laser light and two peaks at 28 and 43 cm−1, which we assign to electronic transitions between the valley orbit split 1s states of P donors on different lattice sites.
Online since: May 2017
Authors: Ronald Green, Aivars J. Lelis, Daniel B. Habersat
Comparison of VT,FD data at three stress times with a fixed tS/tI ratio of 10:1. 6 shows VT,FD vs. tR for a longer, 104 s stress.
Most promising is the data plotted in Fig. 8: all of the VT,FD data taken, on the three different vendors, plotted versus tR2/tI (the inset shows the same data versus tR/tI for comparison).
This would be targeted at a given VT,FD value, ideally around 0.6–0.8 where the data varies linearly and has not yet saturated, minimizing the amount of time spent re-applying bias and maximizing the fidelity of the drift data.
Complete data set of observed VT,FD on all COTS SiC DMOSFETs, showing an empirical “universal” behavior against tR2/tI for all tS.
The inset shows the same data versus tR2/tI (identical vertical scaling).
Online since: September 2013
Authors: Albert Albers, Alexander Schwarz, Matthias Behrendt, Rolf Hettel
Besides the conventional modeling methods, also models, which are parameterized with the help of test data, can be used.
The following alternatives can be used to obtain the necessary test data: · testdata from other measurements In the ideal case, data from other tests are available, which can be used for the identification
These test data can be used to identify the model and then re-sort the remaining maneuver
· identification maneuver Alternatively to the first two possibilities, test data for modeling can be identified, too.
Model structure Verification To verify the model, the test data is simulated with identificated model.
Online since: June 2014
Authors: Li Zhou
The advantages of optical inter-satellites links are :(1) smaller size and weight of the terminal, (2) less power consumption, (3) high security and resistance to interference, (4) high data rate, (5) denser satellite orbit population and etc.
This leads to a significant reduction in the mass and volume to be boosted into orbit and, particularly with the high data rate capacity/payloads, minimizes the risk of interference with other communications systems.
Optical system in laser inter-satellites communication Block diagram of an optical system in laser inter-satellites communication At the transmitter, the data stream modulates a laser source using Pulse Position Modulation.
At the receiver, this process is reversed and the optical signal is converted into a data stream.
Optical telescope An optical telescope is a telescope which is used to gather and focus light mainly from the visible part of the electromagnetic spectrum, for directly viewing a magnified image, making a photograph, or collecting data through electronic image sensors.
Online since: June 2013
Authors: Xiao Mei Lin, Ye Tian, Li Sheng Zhang
Based on the Model of the Differential Mass Conservation Equation to Establish According to differential mass conservation equation, when describing the extraction process can reflect the extraction mechanism the requiring thermodynamic parameter is less and equilibrium and thermodynamic data of the supercritical is also very imperfect.
Differential mass conservation equation model based on the assumption: (1) The porosity of the bed does not change the reduction of the solute with the solid phase; (2) the same temperature and the same pressure inside the extractor; (3) fluid flow rate in the extractor is uniform.
Using three BP network structure, As extract the oil amount for network output parameters, taking the normalization pretreatment of the raw data, specific methods are as follows: (9) 4.
The average relative error of the absolute value of the training and simulation .Figure1,2 comparison of simulation results with experimental data.
Conclusion Three-layer BP neural network structure used in this paper,for the supercritical fluid extraction process, after using the experimental data train and learn,and can make a good simulation of the extraction rate curve and obtain model is more accurate than other methods.The normalization of BP neural network not only solves the differences in original data on the order of magnitude also in network training to avoid the zero.
Online since: March 2025
Authors: A. Kandasamy, B. Ramesh
These benefits stem from their reduced carbon footprint, resource efficiency, waste reduction capabilities, and considerations for end-of-life recycling.
This reduction is achieved through several key factors such as Utilization of Industrial By-Products, Reduction in Cement Production, Lower Energy Requirements for Curing.
This reduction in cement use directly translates to lower carbon emissions during the manufacturing process[37].
This approach promotes the use of sustainable resources and reduces reliance on non-renewable materials, aligning with broader environmental conservation goals[40]. 4.3 Waste Reduction and Recycling The production and lifecycle of GMB are closely tied to waste reduction and recycling principles, making them an integral part of the circular economy.
These studies will provide valuable data on how the blocks perform in various climatic and environmental conditions, helping to validate their suitability for widespread use[51].
Online since: November 2003
Authors: A.J. McMillan, G. Watson
For application to sampled data, naturally we must employ a discrete wavelet transform (DWT).
Dictionary-based algorithms use fixed-length codes to represent sequences of data values occurring in the original signal.
The data dictionary is thus built dynamically as the data is encoded, and stored with the compressed data.
A monochrome image is first compressed by dividing the pixel data up into 8x8 blocks.
In the first, the data is developed from an analytical expression, sampled over a grid of 128128× data points.
Online since: September 2014
Authors: Tao Zhu
In the process of the experiment, chose a city river as subjects, use the data of the river as sample data, use optical measurement method and traditional methods respectively perform experiment, and compare them.
Measure each data set use an interval of 1 °.
After data processing the finally obtained two-dimensional measurement range from -10 ° to 10 °.
Remote-sensing reflectance of turbid sediment-dominated waters.Reduction of sediment type variations and changing illumination conditions effects by use of reflectance ratios[J].Applied Optics,2003,(15):2623-2634
Online since: January 2012
Authors: Ai Rong Zhang, Jin Lan Zhang
The primary benefit of PLC is the reduction of costs in the realization of new communication networks.
Narrowband PLC offers low data rates and is typically used for home automation and metering purposes.
The whole system is divided into four main subsystems, electric control, monitoring, network publishing and data logging.
The data logging rail subsystem to keep the time and date is when a switch on or off.
This data can be used to flow/balance, determine the peak load time and use of electricity produced by itemized electricity charges.
Showing 15841 to 15850 of 40357 items