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Online since: May 2011
Authors: Cheng Wang, Qi Zhang
Vertical static load test is widely used in the determination of pile bearing capacity, the mathematical model used to fit test pile data in determining the bearing capacity is essential.
Chin from Malaysia indicated the curves of (Q-S) could be fitted by hyperbola after the studies of test piles data[3].
Based on the traditional method of hyperbola, a more general form of hyperbolic equations is derived to fit the data in test pile.
Based on one hypothesized distribution function, it is very difficult to obtain the relationship of Q-S that can well fit the test pile data, which is one of the difficult subjects in the world.
It is hard to get the accurate value due to the incomplete test pile data.
Online since: August 2007
Authors: Dong Ying Ju, Tatsuo Inoue
In the benchmark research, calculation accuracy of COSMAP is verified by experimental data of temperature, distortion and residual stresses.
The data on the surface agree qualitatively with the measured values by X-ray diffraction method on the surface.
The data of axial stress almost equals to that of tangential stress.
The predicted results by the code agree well with the experimental data.
Acknowledgement is also due to members of Subdivision of Materials Database, JSMS and Subdivision of Quenching and Simulation, JSHT for their cooperation with collecting of materials data, and the instructive comments throughout this project.
Online since: August 2013
Authors: Song Ye, Qi Li, Mou Lv
According to the fault tree analysis results, the evaluation index system could be established combined with a water source data in the Dongying city.
We can draw the following conclusions that the cause of outbreak of water bloom mainly includes the following several parts through consulting a large number of data.
We establish evaluation system according to the water algae’s growth characteristics [6] combined with fault tree analysis results and the data afford by some tap water company.
The data of the water source in Dongying are shown in table 2.
Determining the single factor evaluation matrix.Each index level standard values is put forward by evaluation index system and the surface water environment quality standard, the cause of blooms factors [7] combining with the relevant data analysis in the Dongying city as shown in table 3.
Online since: November 2020
Authors: Min Jun Liang, Ee Chon Teo, Si Qin Shen, Shu Dong Li
Though high heels increase women’s height and enhance femininity [11], many scientific data have proved that regular high-heeled shoes adversely affect human health [4].
For data acquisition, ten sets of data in walking test were collected for each type of shoe wore by each participant.
Data collection and statistical analysis The kinematics data collected from participants wearing either HHS or FBS walking tests were normalized to get an averaged ankle joint angle profile, knee joint angle profile, and hip joint angle profile in one gait cycle.
The kinematics and kinetics data of the two kinds of shoes were analyzed by a paired sample T-test (p < 0.05).
Discussion The purpose of the study was to analyze the biomechanical parameters, kinematic data (joint angle and ROM of ankle, knee, and hip joints), kinetic data (GRF) and plantar pressure (PP, FTI, MF, and CA) of shoed with HHS and FBS, to study the impact of HHS on the biomechanical characteristics of lower limbs of young females.
Online since: November 2012
Authors: Bożena Zgardzińska
The experimental data on the o-Ps lifetime in the liquid phase in a broad range of temperatures are in the literature not too rich [7-10].
Experimental data for alkanes fall on a single curve, but for alcohols they are more scattered.
The dependence of l on s∞ was approximated by straight lines fitted to the experimental data – the lines run almost parallel.
If U is of the order 1¸1.5 eV, the shift of l by 0.015 ns-1 corresponds to the reduction of U in alcohol by about 0.3 eV (a very rough estimate).
Data 1(4) (1972), 841-1009
Online since: July 2012
Authors: Piotr Żółtowski, Henryk Zobel
Measuring equipment Following equipment was used for measurement of vibration: · Acceleration sensors type 393A03 produced by PCB Piezotronics, · Data acquisition module VibDAQ produced by EC Electronics, · PC computer with software Sigview.
Acceleration sensor mounted on the old abutment Opposite to mentioned above examples following equipment was used for measurement of vibration: · Acceleration sensors type ADXL-203 · Data acquisition module National Instruments NI-6009 · PC computer Technical parameters of vibration measurement: · Range of sensor measurement: : +/- 17m/s2 · Frequency of sampling : 1kHz/channel · Resonance frequency of sensor : 2kHz · Fixing of sensor to the structure : epoxy glue The impact nature of vibration make difficult estimation of frequency.
There are many techniques that may be applied when engineering task shall be optimized for reduction of vibrations on surrounding environment.
Usually for most buildings the higher frequency is better in terms of reduction of impact
Online since: February 2014
Authors: Wei Hua Fang
We will obtain reduction order linear equations by substitution of the data obtained from WNS into Eq.10.
Unknown nodal displacements and stress on the boundary can be obtained by solving reduction equations mentioned above.
Interpolating Boundary Element-free Method (IBEFM) is another method which can utilize measured data of WSN directly without dividing element on boundary of structure.
Online since: February 2011
Authors: Xi Fang Sun, Chun Li, Zhan Sheng Wu
The content of CA exhibited almost no variation and that of TA and MA showed a slight reduction after one-day treatment and then they maintained a relative invariant value.
However, SA and LA presented a slow and gradual reduction trend during the clarification period.
The processing of the data (the first day) was calculated by regression analysis and analysis of variance (ANOVA) was allowed to establish a mathematical relation between pH, CA and TA, which described as equation (1), and also a mathematical relation between titratable acidity, CA, TA, SA and LA, which described as equation (2).
Fig.5, obtained by calculating the data originated from Fig.1, showed the average elimination ratio (AER) of organic acids on the first day.
Online since: December 2012
Authors: Yi Huan Zhu, Jing Bo Su, Feng Wu
P-y Curves Formula of Hard Clay : For the hard clay, the standard value of undrained shear strength is greater than 96Kpa, it is more brittle than soft clay and there have a lot of uncertain influence factors, the study is still immature at present, so the P-y curves should be plotted according to the test data of pile.
If there is no test data, the calculating formula can be as follows: , (2) Where P is the horizontal resistance of soil acting on the pile in x depth below ground (unit: kN/m); Pu [5] is the ultimate horizontal resistance of soil per unit length of the pile side(unit: kN/m); Y is the lateral deformation of pile in x depth below ground (unit: mm); Y50 is the lateral deformation of pile when the resistance of soil gets to half of its ultimate value (unit: mm), the formula is ; is the compression coefficient of the foundation soil (unit: Mpa-1); B is the width or diameter of single pile (unit: m).
Response of pile group: The reduction factor of response of pile group is described as [4,5]: or (5) Where S is the space between the piles, B is the width or diameter of single pile, x is the depth of calculational point from ground, Y is the lateral deformation of pile in x depth below ground; Y50 is the lateral deformation of pile when the resistance of soil gets to half of its ultimate value.
(2) The method proposed in this paper can be applied to pile groups by the only consideration of the reduction factor of response of pile group.
Online since: June 2014
Authors: Badrul Omar, Lee Guang Beng
The six factors namely (1) energy consumption, (2) machining costs, (3) waste reduction, (4) environmental friendliness, (5) operational safety and (6) personnel health are particularly important in making a manufacturing process sustainable [5].
As for Fuzzy Information Axiom approach, triangular fuzzy number (TFN) can be used to express data in linguistic terms when system and design ranges happen to be stated linguistically.
To show a more realistic application, empirical data collected from the experiments are adopted in this study.
Manufacturing Process Operational Sustainability Safety, Health and Environment Sum Conventional Machining 1.8288 2.6415 4.4702* Cryogenic machining Infinite 0.0000 Infinite HPJAM Infinite 0.7909 Infinite Conclusion A case study that involves three alternative processes is presented to demonstrate the application of crisp and fuzzy AD approach in constructing a hybrid model that assists the evaluation of sustainability performance in terms of machining costs, energy consumption, waste reduction, environmental friendliness, operational safety and personnel health.
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