Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: November 2025
Authors: Oleksandr Holinko, Vasyl Holinko, Oleg Kuznetsov, Olena Sharovatova
The reduction of explosion-related risks is achieved through both the prevention of explosive mixture formation and the elimination of potential ignition sources, as well as through the development and implementation of a range of measures aimed at mitigating the severity of explosion consequences.
The availability of real-time data on the concentration of such gases and vapors allows to promptly identify hazards and take action to minimize or eliminate explosion risks.
The study emphasizes the necessity of adapting methodologies to account for such variability to ensure accurate and reliable data – an approach that parallels the challenges faced in gas sensor calibration and deployment.
The reduction in sensor sensitivity compared to other power supply configurations is not critical, and the inherent nonlinearity of the bridge output characteristic in this configuration can be easily compensated for by software algorithms when using modern gas analyzers equipped with microcontrollers – without any loss in measurement accuracy.
Under this power supply mode, maintaining a stable value of Uw leads to a reduction in the current through the thermoelements.
Online since: July 2021
Authors: Jyoti Vimal, Nikhil Aditya
In symmetric cross-ply laminate for an increase of 10mm depth of notch gives a minimum reduction in buckling load of 9.8%.
For antisymmetric cross-ply laminate, this reduction is 9.13% whereas for symmetric and antisymmetric angle-ply it is approximately 7%.
When end conditions of the plate are changed from clamped-clamped to clamped-pinned then reduction in critical buckling load is approximately 50% for both cross-ply and angle ply laminates.
[17] ANSYS 2020 R1,Engineering data ,Engineering data sources ,Composite material,Epoxy E-glass UD, ANSYS,Inc
Online since: September 2011
Authors: Ping Wang, Dan Liu, Jin Hui Xu, Rong Chen, Hao Xu
Second, we should use track inspection car, laser measurement system and other advanced detection means to get the right data in long wavelengths track geometry irregularities, and then targeted to maintenance control the irregularities of turnout.
In the development process of high speed turnout, a number of real vehicle dynamic measurement experiments has conducted, take the Jiaoji PDL as an example[2], when the weld irregularities in 0.2mm/m range of the end of switch rail, and the EMU straight through turnout at the speed of 250km/h, the load reduction rate less than 0.3 (figure 3), but when the weld irregularities in 0.7mm/m range of the end of switch rail, the load reduction rate exceeded to the safety limit of 0.6 (figure 4) at the high speed driving condition.
And then to adjust the geometry state of turnout according to the measurement data until meet certain acceptance criteria to ensure the smooth of high speed turnout constantly repeat.
Due to the turnout plate and the sleeper bearing the force together, the rail role for rail in the link of interval iron, the whole stiffness of track is uneven distribution along the turnout, leading to the reduction of the driving comfort.
Online since: June 2016
Authors: W.M. Paiva Barbosa de Lima, V.S. Silva, A.G. Barbosa de Lima, João M.P.Q. Delgado
Introduction Drying is a thermodynamic process that occurs with simultaneously reduction of the solid moisture and heating of the material.
It is a thermodynamic process of fundamental importance to product quality and reduction of manufacturing cost.
The objective of this stage is to reduction in the moisture content of the products.
The control of the drying process and understanding of the moisture movement mechanism are critical, once that with simulation and/or experimental data, it can be obtained optimum conditions in the process, minimizing the losses of the product and energy consumption.
Have used in your works a mathematical model that considers the existence of liquid and vapor transport, and they have obtained a good fit between experimental and theoretical data.
Online since: August 2012
Authors: Wei Wang, Yi Qian Yang, Peng Hui Liu, Jing Chuan Yao, Zhen Sheng Dong
The critical parameters, such as lateral and vertical natural frequency, dynamic factor, lateral amplitude, lateral natural frequency and lateral amplitude of pier and so on, which play important roles in dynamic behaviors of bridge, are analyzed by experimental data.
The critical parameters, such as lateral and vertical natural frequency, dynamic factor, lateral amplitude, lateral natural frequency and lateral amplitude of pier and so on, which play important roles in dynamic behaviors of bridge, are analyzed by experimental data in the course of train speed raising.
The inspect system of dynamic behaviors of bridge includes data acquisition and processing system, remote control system, automatic data acquisition system, wireless transmission system and electric power system. 3 ANALYSIS OF VERTICAL DYNAMIC BEHAVIOR OF BEAM 3.1 Vertical natural vibration character of concrete beam Concrete beams used in China existing railway include reinforced beams, unreinforced beams and newly-built concrete beams.
Mass of measured data about the vertical natural frequencies and damping ratios of all kinds of concrete beams is obtained through experiment.
The lateral natural frequency was improved significantly by reinforced and the reductions in lateral vibration were remarkable.
Online since: July 2011
Authors: Gui Xiong Liu, Ting Dong Ye
Thus the decoupling variance based on window M is: (4) In (4), when the decoupling number is less than M, the decoupling variance is calculated by the tow former formulas; when the decoupling number is more than M, the data number in the window equals to M, every new decoupling data is obtained, the window slides once, and the oldest data is moved out from the window, the decoupling variance is calculated by the third formula.
In figure 6, the decoupling variance becomes stable with the increment of data, and the first sensor’s decoupling variance is more than, its scale threshold is adjusted to, After the adjustment, the decoupling variance curves of the first sensor in the second window is showed in the figure 7(b), compared with the decoupling variance curves (showed in the figure 7(a)) which hasn’t adjusted in the second window, it decreased 13.56%.
Cross sensitivity reduction of gas sensors using genetic algorithm neural network[J].
On the Estimation of Variances for Multi-Sensor Measurement[J].Journal of Data Acquisition & Processing,Vol.18(2003),p. 412-417 [11] Roal J R, Girja G.
Sensor data fusion algorithms using square-root information filtering [J].
Online since: October 2011
Authors: Shu Yan, Zhen Ping Cui
Therefore, to monitor the sliding status and timely warning are important links in disaster reduction and disaster prevention.
The sensor nodes which carry with angle sensors and humiture sensors collect angle and humiture data then send the data to sink nodes.
The sink nodes control the GPRS gateway module through different AT commands so as to send the data with different paths.
The data could be sent to handsets through GSM network or to center server with internet.
In addition, the data transmitted to center server through internet could be stored as reference in the future or sent group messages to habitants at the same time.
Online since: December 2010
Authors: Xiao Li Zhang, Ke Ying Zhang, Xiao Fei Zhang
And then the team inputs the data and analysis of questionnaires indicators.
Manpower, data collection and the environment are the most important.
According to survey data the sigma level has been improved.
It is a method customer-oriented, driven based on data and fact, focus on process improvement and with predictable and positive.
References [1] Saura I G, France s D S, ContríG D, Logis-tics Service Quality: A Newway to Loyalty, Industrial Man-agement&Data Systems, 2008, pp.650–668
Online since: September 2013
Authors: Wei Li
System Design Zig-bee technology Zig-bee technology is a short-range, low-complexity, low-power, low-data-rate, low-cost wireless communication technology, using the 2.4 GHz band, using frequency-hopping technology, in line with the IEEE802.15.4 protocol.
Web-servers implementation The web-servers works is specified page data stored in the internal microcontroller.
In response packet, including protocol version number and the response status code, its own data and documents requested information.
The data transfer is completed, the two sides through the 4-way handshake to end.
The study shows that, to establish intelligent irrigation system based on Internet of Things technology to reduce the cost of the system cost reduction of 44.8%, compared with traditional irrigation methods, crop water use efficiency of 22.6%, compared with the similar foreign products.
Online since: September 2014
Authors: Yan Zheng, Di Su, Xu Wang, Yu Cai
The reason of selecting the capacity load ratio for reference of the is that under the capacity load ratio, investment benefits more, and there won't be any impact on the equipment life because of the high capacity load . 2, Bessel(β) is Bessel curve variables based on the capacity load ratio β, through a large amount of data accumulation of the Bessel function of control points, selection is as shown in table 4.
(9) Note: AVG means averaging the data
Case Study 4.1 Input Data With the 110kv substation of Red Lotus lake as an example to calculate the sample.
On the comprehensive analysis of the collected data, for a 110kv substation, retired construction cost is 5 million yuan, considering the appreciation of land recycling, 3.75 million yuan can be saved.
Substation Maintenance Strategy Adaptation forLife-Cycle Cost Reduction Using Genetic Algorithm[J].IEEE Transactions on Power Delivery. 2011, 26 (1):  197 - 204 [6] Nilsson, J.; Bertling, L.
Showing 23881 to 23890 of 40694 items