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Online since: February 2008
Authors: Lorenzo Donati, Luca Tomesani
The mesh was rebuilt at every time step, due to the extreme area reduction.
Mechanical Proprieties UTS and Area Reduction.
Each processing condition was simulated by means of complete thermo-mechanical FEM analysis (for detailed modeling data refer to [14]).
No strain data were available below 75 MPa, but it seems conceivable that the same correlation will remain valid until the critical pressure of 50 MPa formerly set, below which the true strain would necessarily fall to zero.
The considerable scattering of the data is the result of different facts: • The profiles were tested in the "as extruded" shape, namely with their thinning defect (the reduction of thickness with respect to the nominal one); • The higher the speed, the higher the thinning defect; in order to avoid this problem the area reduction was chosen as the best parameter to evaluate deformability; • Different conditions of preheating and speed determines different recrystallization of the profile and thus different responses to tensile test Nevertheless, the general tendency toward a decrease in deformability with process speed was clear and for this reason it has been reported here.
Online since: March 2011
Authors: Zhe Zhang, Xu Yong Ying, Fu You Xu
The first part examined the accuracy of various RANS turbulence models, i.e. the standard model, RNG model, realizable model, standard model, SST model, and RSM, by comparing their results with available experimental data.
The focus of this paper is to look for a reasonable 2D RANS approach for practical wind engineering problems by comparing their results with experimental data.
Comparisons are made with the experimental data [2,3] and the LES results [4].
Trough comparison with the experimental data [5], the computational drag is reliable.
In summary, it is encouraging to obtain the results comparable with the experimental data by computational fluid dynamics (CFD) techniques, such as 2D RANS approach used in current paper.
Online since: July 2006
Authors: B.J. Drakulić, N. Katsaros, S.P. Sovilj, D.Lj. Stojić
Their predicted geometries optimized by the MO calculations are in excellent agreement with the reported crystal structure data, and therefore can be used as models for docking study between complexes and biomolecules.
Represented anal. data [MoO2(Pipdtc)2] (1) Yield: 106 mg (17%).
Selected anal. data for MoO2(N-Mepzdtc)2] (5) Yield: 130 mg (27.1%).
The graphical presentation of ie for all 1000 solutions with applied 95% noise reduction is given in Fig. 3.
Geometry of (3) assessed by the semi-empirical PM3 method was in excellent agreement with the previously reported x-ray structural data.
Online since: June 2012
Authors: Romildo Dias Toledo Filho, Ana Catarina J. Evangelista, L.V. Carvalho
The reported data are the average values from three specimens.
The increase of fiber content resulted in a reduction of 30% and 40% in the matrix workability, respectively.
The specific gravity (dry condition) of fibers composites presented reduction of 6% with the increase of the fiber content.
The modulus of elasticity is less affected and only a minor reduction (1.5% -2%) is observed.
The modulus of elasticity was less affected and only a minor reduction (1.5% -2%) was observed.
Online since: June 2015
Authors: Mirela Mazilu, Stefan Ispas
Fig.1 Contribution to international Disaster Risk Reduction efforts (Source: the Hyogo Framework for Action 2005-2015) ECHO strongly supports all international efforts, including those coordinated by the United Nations, to increase disaster risk reduction worldwide.
ECHO therefore actively supported the World Conference for Disaster Reduction held in Kobe, Japan in January 2005 following the Tsunami.
This conference was one of the milestone events that led to the formulation of the Hyogo Framework for Action 2005-2015 and the international commitment to strengthen the International System for Disaster Reduction (ISDR) established within the auspices of UN OCHA.
During the different sessions of the Global Platform for Disaster Risk Reduction, held in 2007, 2009 and 2011, ECHO actively participated sharing its strategy and experience in community based Preparedness and Disaster Risk Reduction with government representatives, specialized UN agencies, lead donors, the Red Cross and Red Crescent movement, scientific and regional experts, civil society and private sector representatives.
In Implementarea noii directive cadru a apei in bazine pilot (WAFDIP), TR – 7, pag. 1:32, EuropeAid/114902/D/SV/EO, 2005; [16] Information on Black Sea Red Data Book, http://www.grid.unep.ch/bsein/red book.
Online since: June 2015
Authors: V. Srinivasa Raman, S. Sudhagar
Further ACO has shown a significant improvement in percentage weight reduction of 40.55, 72.56 and 84 when compared with PSO, RCGA and LINGO respectively.
The ACO algorithm performed better when compared with other algorithms in terms of power transmitted and weight reduction.
In particular ACO has shown significant decrease in weight reduction.
Optimal Design of Compact Spur Gear Reductions, Transactions of the ASME, 690 / Vol. 116.690-696 [3] Deb, K.; Jain, S. (2003).
[18] Design Data Book, Faculty of Mechanical Engineering, PSG College of Technology, Coimbatore-641004,Tamilnadu ,India
Online since: July 2012
Authors: Lian Huan Li
Character segmentation generally needs to go through three processes: tilt correction, remove outside, noise reduction and single-character segmentation.
Then, after remove edge and noise reduction, we can implement single character segmentation.
Noise Reduction Noise reduction can use the median filter, it use the middle of the gray values of adjacent pixels of the pixel instead the value of the pixel.
Single character segmentation After remove side and noise Reduction, Character blocks can be single character segmented.
(2) take the threshold value T, generally select a small integer (such as 0,1,2, etc.), contrast from the first data of array, get the location which the first pixel is greater than or equal to T, corresponding to the subscript of array PCount, denoted by Start1 = i1; back from i1 to right, get the location which the first value is less than or equal to T, denoted by End1 = of i2, the preliminary view is that the first character area is found
Online since: June 2010
Authors: Mao Zhu Jin, Zhi Wei Zhao
Therefore, Lean and Six Sigma need to be integrated to combine the variability reduction tools and techniques from Six Sigma with Lean methods to eliminate the waste and non-value added activities.
Usually, the enterprise can use Data Analysis and Process Analysis to find the cause of problems
Comprehension of similarities and differences can help develop an approach for rapid process improvement and dysfunctions reduction through process interactions.
Figure 1 uses DMAIC-KB approach bases on PDCA cycle for process improvement and dysfunction reduction.
The DMAIC-KB approach is an extremely effective way to execute rapid process improvement and dysfunctions reduction through process interactions.
Online since: January 2012
Authors: R. Manna, G.V.S. Sastry, N.K. Mukhopadhyay
Reduction in grain size increases strength and ductility in conventional coarse grained metals and alloys [1].
EBSD scans were taken using Quanta 200 scanning electron microscope and data were analysed using TSL 5.1 software.
The reduction in stacking fault energy of aluminum by addition of 1 wt% Mg is the highest followed by that of 1 wt % Zn and 1 % Ag [35].
The degree of grain size reduction is highest in the initial few passes, almost by one to two orders of magnitude.
The increase in uniform elongation is due to reduction in dislocation density and increase in the fraction of high angle grain boundaries.
Online since: September 2014
Authors: Damir I. Ibragimov, Andrey Yu. Fershalov, Mikhail Yu. Fershalov, Yuriy Ya. Fershalov, Timofey V. Sazonov
Presents a methodology of the experiment and data processing of the results.
Introduction Reduction of energy losses in the nozzles of small turbines is a reserve for increasing the efficiency of the turbine.
Processing of the experimental data 1.
Showing 11261 to 11270 of 40694 items