Search:

  • Data Reduction

Search Options

Sort by:

Publication Type:

Open access:

Publication Date:

Periodicals:

Search results

Online since: September 2008
Authors: James Griffin, Xun Chen
The benefit of using ICA is at reducing highdimensional data sets into rich accurate summary data sets.
Therefore a reduction technique such statistical data reduction techniques or independent component analysis (ICA) is required before classifier introduction.
The statistical data reduction techniques [20] used the most sensitive AE statistical measures in a windowed type fashion (every 100 pts along the STFT signal).
This data reduction technique was only applied to the AE extracted signals reference the burn and chatter phenomena trials.
GP suffers from large n-dimensional data problems and therefore requires n-dimensional reduction techniques to ensure the data applied to the classifier is both salient and rich in terms of describing the actual phenomena.
Online since: July 2015
Authors: Antonio Piccininni, Gianfranco Palumbo, Luigi Tricarico, Vito Piglionico
Even if both numerical models (implementing different yield criteria) were tuned using experimental data, quite different results were obtained from the optimization procedure: the adoption of the anisotropic criterion was thus proved to be the suitable choice for better catching the material behaviour, as also confirmed by experimental hydroforming tests aimed at verifying the robustness of numerical data.
A non-contact DIC system was also used to obtain data from WHF tests (strain distribution and thickness reduction) to be used for calibration and validation purposes: the strain distribution was calculated comparing the undeformed blank shape and the one after the WHF (Figure 2a); thickness profiles were evaluated along the longitudinal path indicated in Figure 2b.
For each response variable, a RS able to fit starting data was created.
As an example, in Figure 6 the RSs created using data concerning the response variable Flatness obtained using both the numerical models (the anisotropic yield formulation, a; the isotropic yield function, b) have been presented.
Their capability of fitting data was evaluated calculating the Mean Leave One Out Error (MLOOE) [12]: if lower than 0.2, the RS was considered adequately accurate.
Online since: August 2014
Authors: Lin Hui Zeng, Guang Ming Li, Song Li
It shows that fuel economy policy is essential in energy saving and carbon reduction in vehicle sector.
Data of per capita GDP and vehicle ownership from 1987 to 2007 is obtained from Shanghai statistical yearbook. α and β can be determined by fitting the change trend of vehicle ownership with the help of Excel.
By 2030, CO2 emissions will obtain a reduction of 10.427 million t compared with the baseline scenario.
By 2030, CO2 emissions will obtain a reduction of 10.427 million t compared with the baseline scenario.
It shows that fuel economy policy is essential in energy saving and carbon reduction in vehicle sector.
Online since: March 2013
Authors: Ying Liu, Hong Li, Xiu Chen Zhao, Jing Wei Cheng, Yun Xia Lv
Results indicated that the lubricant oils adding oleic acid-modified zinc phosphate nanoparticles exhibited a good friction-reduction and anti-wear property.
For each sample, three identical tests were performed so as to minimize data scattering.
Fig. 5 shows the friction reduction properties of the zinc phosphate nanoparticles at different additive concentration in base oil.
(2) OA-zinc phosphate nanoparticles improved the anti-wear and friction-reduction properties of the base oil appreciably, even at relatively low concentration.
With further increasing the additive concentration, it was bad for the anti-wear and friction-reduction properties of the base oil
Online since: August 2014
Authors: Qing Rong Liu, Cui Yu Wu, Hai Yan Chen, Qun Yin Gu
From the data, it can be found that the total population amounted to 16.09 million in 2000 with 13.32 million household populations and 2.77 million transient populations.
According to overall development situation of Shanghai and actual statistic data, the construction sector has great increased in recently years.
Moreover, from these statistical data, although the increase speed of total energy consumption is not so rapidly, the energy consumption structure changed greatly before 2008.
These data means the relatively clean energy consumption ratio is rising greatly.
According to the statistic data, the building energy consumption accounted for about 25% of total energy consumption in Shanghai and will increase with 1% per year[4-6].
Online since: October 2013
Authors: Ali Faraji, Mahsan Razavi, Nasser Fatouraee
This pump may be used for slow liquid medicine injections for the purpose of pain reduction in a wide spectrum of inpatient treatments as well as for tube feeding in patients incapable of eating solid foods.
Local manufacturing of goods and equipment has many advantages including a reduction in transportation costs in and out of the country, foreign goods guarantee and repair costs, internal employment opportunities created and on a wider scale independence and self-sufficiency and national scientific development.
Data was collected from twenty users including nurses, repairmen and patients from hospitals and private clinics in Tehran and Isfahan cities during the winter of 2011.
Data analysis and processing was performed to determine the design criteria for the infusion pump body and encasement as follow: Performance Criteria · Use of horizontal door for ease of line installation and connection; · Reduction in production costs and producible with present technologies; · Use of touch screen monitors; · Use of standing or stationary form and design; · Creation of visual balance for viewer's mental relaxation; · Ease of operation and minimizing steps in using and operating the machine for quick remembrance of tasks performed; · Use of remote control; · Equipped with alarm systems to point to technical problems; · Capability of saving data in the active memory for reuse of instructions during the period of treatment specified by the physicians; · Ease of learning how to operate the instrument; · Reliability during its operation.
Aesthetics Criteria · Simple and modern design; · Use of curvature and soft shapes; · Sectional integration for visual clarity, least number of parts and use of integrated forms; · Use of neutral colors and gray spectrum for reduction in visual complexities and observance of health issues; · Stress reduction based on appearance characteristics such as form and suitable color; · Induced appearance to give a power sensation and self confidence to users; · Exciting appearance for persuading users to operate the product; · Diversity in surface quality of outer parts for better visualization and differentiation; use of variety of surfaces with shiny and opaque layers; · Product's visual coordination with surroundings suitable to hospitals environment.
Online since: May 2011
Authors: En Shan Han, Ling Zhi Zhu, Ji Lin Cao
LiFePO4/carbon composites were synthesized by carbon thermal reduction method under nitrogen atmosphere.
Data for Rietveld structure refinement were collected in the 2θrange 5-80 with 0.02°step interval and 10s step time.
The oxidation and reduction peak voltage is very useful parameters of the electrochemical reversibility [10].
For LiFePO4/C (I-2), the oxidation and reduction processes occur at 3.56 V and 3.31V, respectively, with a peak separation of 0.25 V.
The above data indicates that the rate properties of materials and cyclic voltammetry curves are consistent, small peak separation between radix peaks, peak shape more intense, more uniform distribution, better rate performance.
Online since: December 2013
Authors: Aisyah Iadha Nuraini, Erlinda Muslim, Maya Arlini Puspasari
Results and Discussion Anthropometric data collection performed on 16 subjects.
The data were taken are height, weight, height knuckle and shoulder height.
Anthropometric data will later be used as a data processing load capacity based on biomechanical criteria using software Jack.
In this jack software required anthropometric data has been obtained.
For reduction factors above knuckle height cannot be calculated due to the lack of data in the load calculation can be lifted from shoulder height.
Online since: May 2010
Authors: Li Ping Zhang, Ren Hang Huang, Li Hua Zhang
DD is a typical data-centric protocol for wireless sensor networks [1].
For instance, setting the gradient diffusion depth threshold value is used to narrow the range of the dissemination of interest messages, then to reduce the amount of data transmitted over the network in the literature [2]; Passive Clustering strategy is introduced into the Directed Diffusion Protocol in the Literatures [3, 4], plenty of reduction of the directional flooding in the interest and exploration of data, greatly improved the overall performance of the network.
When nodes propagate sensing data, the packet CH information field has five values: the unique marked node node_id, node_status, two CH nodes (ch1_id,ch2_id), energy_surplus(with a total of 17 bytes).
In other words, gateway only forward the packet of the CH which takes this node as CH; the ordinary nodes only receive packets from the CHs, and sent the data matching interest to the CH.
In a word, the proposed algorithm adopts CH declaration mechanism based on energy threshold and gateway selection mechanism based on residual energy, it has many merits: 1) it not only balances the energy consumption, but also reduces the probability of re-cluster's method in the network topology maintenance mechanism. 2) Comparing with PCDD ,EPCDD packet flooding overhead further decrease, and packet flooding overhead reduction is far greater than the overhead increase due to the increased length of the single information packet, so EPCDD has better energyefficiency; 3)the probability of collision greatly reduce while the number of network connections is further reduction, therefore, the packet's delay performance will be better, and packet reception rate is also higher;4) With the increasing of the nodes ,the greater is the network density, the more is the number of network packet, flooding overhead reduction and reduction in the number of the network connections become
Online since: May 2023
Authors: Ilya Men, Dmitry Naroditsky
Reduction in structural integrity due to crack propagation causes a reduction in natural frequency and transmissibility.
Standard weld fatigue data is often provided for direct loading (tensile stress) and different stress ratio (R) values.
Correlation between the data is done by various mean stress corrections.
This allows simpler engineering-oriented analysis, not requiring stress concentrator modeling and practical post-processing using standard nominal stress standard fatigue data [35].
National Instruments (NI) data acquisition (DAQ) system NI cDAQ-9174 (NI9236 Quarter Bridge Module) is used for data recording.
Showing 3141 to 3150 of 40240 items