Search results

Extensive data on the reliability of these devices is also presented.
The high drain efficiency under near pinch-off condition clearly demonstrates that substrate and surface trapping effects previously observed in SiC MESFETs have been greatly reduced. 2 Title of Publication (to be inserted by the publisher) The reduction of trapping was also verified by measuring drain lag under both DC and RF operation.
Fig. 2 is a histogram showing that there is essentially no reduction in pulsed IDSS when measured from a quiescent condition of VDS = 25 V, VGS = -16 V as compared to IDSS when measured from VDS = 0 V, VGS = 0 V.
In the past, devices fabricated on vanadium-doped substrates also exhibited a significant reduction in the quiescent drain current when the RF input power was abruptly turned off, and then slowly recovered to the original bias point.
However, these data indicate that the long-term reliability of the devices tested is sufficient under normal operating conditions for their intended applications.

Although various complex phenomena occur when different materials/structural members are damaged, it is usually assumed that the presence of damage reflects on a reduction of the effective flexural stiffness.
Concrete spalling and dilapidation Corrosion, dilapidation of reinforced bar or steel members Dilapidation of deck pavement It is shown that all these types of damage can be represented by the reduction of flexural stiffness.
The damage is simulated with 10% reduction in the local stiffness EI.
In addition, there are two advantages should also be noted: l It does not need the expertise of modal identification, does not need any numerical model of the beam and it uses only the directly measured data, without further treatment or analysis.
"Damage identification using modal data: experiences on a prestressed concrete beam", Journal of Structural Engineering, vol.12, 2005, p.1898-1919

Recently, a RBF neural network application developed by the author [13] successfully simulated the accumulating deflections of the pavement layers, according to the measured data introduced above.
It seems that the vertical compression which results in the thickness reduction plays a main role in the first and last stages of about 0-20% and 90-100% of the final deflection of the P401 AC Surface, and the horizontal extrusion which results in the thickness increase or bulge plays a main role in the 1st layer for the other stages
It seems that the vertical compression which results in the thickness reduction has been playing a main role in the 2nd layer for the whole testing process
It seems that the vertical compression which results in the thickness reduction plays a main role in the 3rd layer in this stage.
Tutumluer: Analysis of NAPTF Trafficking Response Data for Pavement Foundation Deformation Behavior.

Introduction At the Copenhagen summit in December 2009 , the committee in the Climate Change of the United Nations Intergovernmental Panel claims,carbon dioxide and other greenhouse gases have become the main reasons for global warming, energy efficiency and emission reduction should be paid more attention by human beings the future[1].In 2009,China's President Hu Jintao pointed out that Chinese new energy efficiency and emission reduction plan will be served as an important direction of our development strategy in the summit of the United Nations Climate Change,which shows that China will greatly reduce carbon emissions in the future, and reduce the consumption of fossil fuels.
According to the research of the developers, the next two years will be a key stage,we will build a low-carbon real estate through the strategic deployment of low-carbon economy,the green estate has played a very important role,especially in upgrading industries, dealing with the economic crisis, the revitalization of domestic demand.Low carbon and energy saving of the brand construction are snapped up in Hangzhou,the systems of the entire building energy which use low carbon emissions throughout its life cycle,and then 250 million KWH of electricity, 830 million tons of standard coal, 2.48 billion tons of carbon dioxide emissions and reduction emissions will be saved in this project.
According to the Figure 6,the life cycle of the building 's carbon emissions data have to be dealt with normalized rating,it comes to a score from the four stages which is divided by the highest score,then the final value is normalized: 0.85,0.6,0.8,0.9 .Evaluation of the analytic hierarchy process which comes from the proportion of the four stages,according to the normalized data and specific gravity which are multiplied and summed to arrive at a final score.Scored by analysis , if it is more than 0.6, then this stage meets the standards of low - carbon , it does not reach 0.6 , and it is not found .

Table 1 Greywater Characteristic Data Parameter COD, mg/L BOD, mg/L pH TOC mg/L TIC mg/L TC mg/L TN mg/L Phosphate mg/L Concentration (n=3) 183 224 7.4 64.9 32.15 54.82 19.30 12.7 Distilled water with Botryococcus sp.
Based on the trends produced, the Botryococcus sp. has reveal a great removal in COD concentration, which is the total reduction efficiency for both concentration were 83% and 88% respectively.
Meanwhile for 100% concentration, it can be viewed from the graph that there is a reduction in the value of TOC from 64.90 mg/L to 39.62 mg/L.
All the data showed is almost the same flow of decrement.
In the meantime, 100% concentration of GW showed a important reduction in the value of nitrogen and phosphate.

Standard industrial hot-forging cycle Modified industrial hot forging cycle Total reduction of about 75% Total reduction of about 75% Solubilisation (AMS2772): Ts=475°C for 5 hours of soaking time Solubilisation (AMS2772): Ts=475°C for 5 hours of soaking time Water quenching Water quenching Room temperature up-setting: 5% max 150°C and 200°C up-setting: 5% max Two step ageing: 121°C for 5 hours + 177°C for 8 hours Two step ageing: 121°C for 5 hours + 177°C for 8 hours The effect of working process parameters was evaluated through tensile tests according to ASTM E8 specification with deformation rate e= 0.03 s-1.
It is observed that deformation temperature has a weak effect on these mechanical properties: there is a slight increase of HB, YS and UTS with temperature with a concomitant reduction of hardness data scattering.
Figure 2 shows a significant increase of KIC with deformation temperature accompanied by lower data scattering.

The reduction of the wafer substrates’ BPD density supports the goal of a BPD free epitaxial layer.
This would allow for tuning the epitaxial growth process for optimization of other epitaxial layer parameters such as thickness and doping uniformities or defect density reduction.
The data indicate that the area of high implantation damage for Ar ion implantation energies at 100 keV extend to the wafer surface.
However, after thermal annealing and the final investigation after the pre-epitaxy in-situ hydrogen etch wafer bow measurements as well as XRD spectra show measurement values almost identical to the data from the untreated wafer.
This indicates a substantial reduction of the lattice distortion in the material.

A GIS database was chosen to house the offshore resources data because the datasets have a significant spatial component.
A visualization of the geospatial data is created using the Google Maps platform.
In the focus area of this study there is a lack of such data sets.
The system provides data requests for the whole region and for particular territory points.
The request results include modeled values and statistically collected and analysed data.

The general idea is to use a scheme based on measured process data to detect a fault occurrence in a physical process, e.g. a component deterioration, to isolate the fault location in the process and to identify the time characteristics of the fault.
Another large step forward can be made by control engineers: the design of better maintenance schemes for turbine components can lead to cost reduction and higher availability of the turbine.
Experimental Data The disturbance caused by tower interference and wind shear depends on the position of the blade.
Spectrograms obtained were joined into data blocks by time tag.
For each data block static characteristics were determined: (6) Where the average value of spectrum constituent's amplitude is, is the number of spectrograms in data block; (7) Where is a dispersion of spectrum constituent's amplitude.

Key energy-using companies of the first quarter of each year submit the annual energy-using condition on a report submitted by the system, the data cached in the database, the uploading data displayed on the charge of the management accounts department supervisors, inspectors examine the data , labeled on the data items with errors, review and submit comments back to the reporting companies, and then correct the errors and resubmit to the system, and the data confirmed by the inspectors, then stored into the database.
Logically from the presentation layer, business layer and data layer composed of three levels.
Data services layer contains various data sources, because of the isolation of data access sub-layer, so the business logic part of the system does not depend directly on the data source [6,7].
Data access layer is opened, and the system currently uses Microsoft SQL server as the primary data storage, for Oracle, DB2 and other heterogeneous data sources can be expanded when it is needed in the future.
Energy-saving information management system uses centralized application architecture to ensure that basic data and important data are uniform, so that it can be achieved the greatest degree of data sharing.