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 2012
Authors: Ying Hua Han, Yu Huan Wang, Li Liu, Jin Kuan Wang, Fu Lai Liu, Xin Song
Serial data streams are converted to parallel and transmitted on different antenna in MIMO system.
A lot of efforts have been put into the search of detection algorithms achieving ML or near-ML performance with lower complexity, such as tree search algorithm, lattice reduction, chase detector, and so on.
Sheen, A new Lattice Reduction Algorithm for LR-Aided MIMO Linear Detection, IEEE Trans. on Wirel.
Valenzuela, V-BLAST: An Architecture for Realizing Very High Data Rates Over the Rich-Scattering Wireless Channel, ISSSE. 295-300. (1998)
Online since: October 2014
Authors: Andrei Burlacu, Vasilică Ciocan, Marina Verdeș, Cătălin George Popovici, Ionela Cazacu, Marius Costel Balan
Simulations were conducted that compare the resulting data in the case of using jet and induction fans and also the influence of their operation when they are influenced by the construction geometry of the underground garage.
In the case of their use, the following advantages are obtained: reducing the number of fans employed; reducing energy consumption in the system; savings to achieve the power supply system including the sizing of the reserve power supply; annual maintenance cost reduction; reduce installation time; acoustic attenuation (due to reduction of the fans numbers); fans routing form (form jet) decisively influences the efficiency of the entire system (both functionally and economically); in the case of beamed ceilings is recommended that fans should be located as far away from it.
Forney, User’s Guide for Smokeview Version 5 – A Tool for Visualizing fire Dynamics Simulation Data.
Online since: April 2024
Authors: Rasim Bashirov, Oyrad Abdullayev
.-25, Az-1073, Baku 2Caspian Sea Transport Project and Scientific Research Institute, Ziya Usifzade Street 48, Az-1003, Baku arasim_agma@aztu.edu.az, boyrad.abdullayev@asco.az Keywords: subsea work, supply vessel, diving vessel, technology equipment, technology complex, data base, apparatus, efficiency of a research, scientific efficiency Abstract: The main technological equipment of subsea construction vessel is diving complexes and hardware, in various combinations thereof.
It is proposed to link the task of classifying vessels of this class with the classification of the subsea equipment they serve, in order to form the basic data of a perspective vessel.
The block diagram of use of hardware and complexes on the subsea construction vessels Thus, for the purpose of reduction of idle times in use of the vessel, it is necessary to provide the following additional equipment and design features in the list of the equipment: - Cargo deck; - Living rooms for staff; - Store for technology equipment; - Lifting gears; - Hangar for hardware (ROV, AOV & MS); - Hardware charging post; - Hardware navigation system.
Using a formula (1) and data of Manual [2 p.12], level of scientific effect of a research with the received value was calculated – 7.75.
Online since: July 2015
Authors: Tengku Muhammad Afif bin Tengku Azmi, Moinul Bhuiyan
Operating voltage of this sensor is 3v to 5v and it only use 2.5mA current during conversion data.
The GSM shield has a modem that transfers data from a serial port to the GSM network.
A graphical data was collected timing from 9.00am to 4.00pm.
Thus, based on the two data collected, the change in temperature was focused throughout the project.
Three sensors’ data in various time for Cloudy day and Sunny day.
Online since: January 2012
Authors: Da Zhuang Chen, Jia Dong Huang, Yang Sun
Empirical mode decomposition (EMD), which is the core mechanic of the Hilbert-Huang transform(HHT), is a local, fully data driven and self-adaptive analysis approach.
Dynamic simulation data shows that the IMF differences between fault current and inrush are obvious, and can be used to identify inrush simply and practically.
After finding the extreme point of x(t), all maximum points and minimum points are connected with a curve that include all signal data to obtain the up and down envelope lines of x(t).
In addition, when the amplitude of differential current inside the data window is not more than the biggest unbalance current, Kmax is 0.
In the first 20ms, because the data is not enough to be a data window, there is no output.
Online since: June 2014
Authors: Yu Tang
Considering the limited data from the video and the low accuracy measurement, applying the general theory of second-rate and wave density method is not effective.
Vehicle data comes from 2013 China Undergraduate Mathematical Contest in Modeling Question A.
Those above data of the indicators are used as a learning sample.
Due to relatively discrete data, the coefficient of road traffic cannot be got at every moment.
Analysis of Model Using actual data as samples for training can greatly improve the accuracy of mapping, so that the model has its promotional value.
Online since: March 2010
Authors: D. Jaramillo-Vigueras, H. Rojas-Chávez, Fidel Reyes-Carmona, Gabriel Plascencia
Simultaneously to those chemical changes, a gradual reduction of oxide phases by presence of Se should occur to a point where the mayor reaction product would be the PbSe phase.
It is acknowledged that high energy ball impact results in particle size reduction, down to nanometric sizes.
In the upper curve, dots correspond to the experimental data, and the continuous line corresponds to the calculated diffraction pattern.
The lower curve represents the difference between the experimental and calculated data.
Barin, in: Thermochemical data of pure substances, 3rd Ed., VCH, Weinheim, NY (1995)
Online since: February 2022
Authors: Yuliya Z. Vassilyeva, Alexander Y. Pak, Gennadiy Mamontov
Introduction Nowadays, due to unique electronic structure and good conductivity molybdenum carbides (MoCx) are widely used as catalysts in various reactions: nitrogen reduction reaction (NRR), CO2 reduction reaction (CO2RR), hydrogen evolution reaction (HER), oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) [1].
Molybdenum carbides can be synthesized by various techniques, including calcination [4], tuning carburization atmosphere and temperature of the precursor [5], pyrolysis [8], chemical vapor deposition (CVD) [13, 14], through the first reduction reaction and the following carbonization process [15], mechanochemical synthesis [16], using a temperature programmed reaction procedure [17] etc.
The obtained data were used to estimate the average power of the plasma effect by multiplying the current array by the voltage array and the amount of supplied energy by integrating the power over time.
According to the obtained data, it is possible to indirectly estimate the energy efficiency of the synthesis process: with an increase in the mass of the initial mixture from 0.5 g to 2 g, the specific amount of energy relative to the initial mass decreases from 520 kJ / g to 130 kJ / g.
According to X-ray diffraction data, the samples have a crystal structure: there are two phases of molybdenum carbide - Mo2C and Mo1.2C0.8, and an ultradispersed graphite phase is also present in the samples.
Online since: October 2004
Authors: Pierre Barbéris, Francis Wagner, Nathalie Bozzolo, N. Dewobroto
ODF's (Orientation Distribution Function), were computed either from X-ray pole figures or from EBSD individual orientation data sets by using the harmonic method.
The sheet was cold rolled with a laboratory rolling mill up to a final thickness reduction of 80% (corresponding true strain ε=1.61).
After 80% of thickness reduction, the texture of cold rolled Zr702 is characterized by a broad peak centered at {ϕ1=0°, Φ=30°, ϕ2=0} visible in the ϕ1=0° ODF section in Fig. 1.a.
In Fig.2.b the raw map has been filtered (neighbourhood orientations have been affected to notindexed data points) in order to visualise misorientations between indexed pixels.
The band contrast of not-indexed data points is always very low.a) 10 mm NDRD C m B m A m RD DT b) RD DT Figure 3.
Online since: March 2015
Authors: Yong Li Li, Feng Long Zhang, Yu Chun Bai, Fu Li Qi, Meng Cai Zhang, Yi Liang Wang, Hui Jin
To eliminate any effect of drilling operation on the surrounding soil and obtain stable, correct original temperature and thermophysical parameters of subsurface soil, both buried tube thermal exchange wells were left undisturbed for 72h before the test started. 1.3 Testing apparatus and process A rock-soil thermophysical testing apparatus consisting of a stainless steel electric heating insulated water tank, a circulating water pump, a stainless steel pipe system, a power distribution system, a flow sensor, temperature sensors, a power transmitter and a data acquisition unit integrated on a bench was used for the test as shown in Fig. 1. 1.
Temperature data during the test was automatically acquired to the precision of three digits after the decimal point.
Fig. 2 shows the temperature data of the local rock-soil body in this area.
The equivalent coal reduction to the heat so derived is 3.7×1010J.
The coal reduction, in turn, will result in reduction of CO2 emission by 1.12×1010t, SO2 emission by 7.99×107t, Nox emission by 2.82×107t, suspended dust emission by 3.76×197t and solid coal ash emission by 4.7×106t.
Showing 9671 to 9680 of 40694 items