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Online since: February 2012
Authors: Li Xin Fang, Ming Yang
The computation results predicted with FE modeling in our paper agrees well with test data available.
In the figure, curve of model F0 represents the case of no local load existing, its computation data corresponds to the time history depicted in Fig.2.
The analysis result verifies that the behaviour of the composite cellular beam under fire conditions is more complex than usually imagines, some factors usually ignored in normal design such as small local load from pipeline’s weight can result in great failure risks of the cellular beams while exposed to fire, that implies the bucking failure around web openings in cellular beams at high temperature cannot simply be estimated by applying temperature-dependent reduction factors on stiffness, as given in codes such as EC3/4 or BS5950.
Through numerical analysis, it is found that local load from duct’s weight can cause apparent reduction to cellular beam’s fire resistant capacity.
Online since: May 2009
Authors: J.R. Van Deventer, Bernie Gigas
The power draw by the agitator and associated inefficiencies with the introduction of external sparged air however poses significant Opex reduction potential.
The data from each experimental data set is then curve fit to the following formula: Power �umber Determination.
Conclusion From a BIOX® process view point the combination Lightnin impeller configuration is superior to any other mixing system tested in the BIOX® process, achieving a reduction power per unit volume as well as reducing the volume of air required to maintain the same sulphide sulphur oxidations without compromising any bacterial activity or gold recovery.
Online since: September 2013
Authors: Bao Hua Xu, Chen Ming Li, Jun Lin Qiu, Li Zhong Xu, Feng Zhou Wang, Cong Liu
The velocity, quantity, and quality data of flow in the drainage pipelines were collected online and in real-time by the reconfigurable sensors invented by our own team and WSN node devices, the data goes through sink nodes, and then were uploaded to the data workstations of drainage network with fixed IP address via wireless GSM/GPRS.
They are combined with GIS data and stored into the central database system.
It is isolated physically with public network by the data access locking mechanism of the single-way optical gate (FGAP).
On the one hand, the center workstation collects operation data of SCADA system in real time; on the other hand, it gathers real-timely the drainage network data such as water level, flow rate, COD through sink nodes and WSN node devices.
ETL (Extraction Transformation Loading) is applied to perform data extraction, transformation and loading.
Online since: January 2013
Authors: Hsien Wei Tseng, Yung Wen Lee, Ming Hsueh Chuang, Yih Guang Jan, Yang Han Lee, Chih Yuan Lo
In wireless communication system the feasibility of high data rate is proved by utilizing MIMO technique, its reliable data rate for each antenna transmission path is 150 Mbps PHY rate and it needs to have at least 7 antennas to reach the PHY rate of 1 Gbps.
In this paper it has the goal of using 7 ~8 antennas to attain 1 Gbps data rate [4-6].
The Design of High Data Rate Multi-antenna System In this paper it is to determine in the high data rate IEEE 802.11n system how many dBs is required in the antenna isolation to attain the maximal rate transmission.
This isolation is defined as the required minimum isolation between two antennas in order to attain the maximal data rate.
In IEEE 802.11n when it uses only 1 antenna to transmit data stream its maximal PHY rate is 150 Mbps or 135 Mbps (Nss=1).
Online since: October 2011
Authors: Qi Zhang, Xiang Hu Li, Heng Peng Li, Min Shao, Li Ming Jin
It is also concluded that the hydrological modelling using a spatially distributed model is helpful and essential in obtaining flows at any locations, which can subsequently be used jointly with the water quality data to identify the critical source areas with high nitrogen yields.
In China, progress has also been achieved in field experiments, monitoring and nutrients load calculation for experimental areas, e.g. [13,14,15], however, detailed quantitative analysis and modelling is still rare and this has limited the implementation of management measures for an effective reduction of pollutants load.
The data obtained may serve as a good database for further process-based model development and modelling.
The hydrological model may need to be updated with climate and hydrology data for more recent years covering the water quality monitoring period so that more ‘real’ yields can be calculated, and this remains a further work.
Management strategies are urgently needed for an effective reduction of nitrogen pollution from agricultural activities and urbanization.
Online since: November 2022
Authors: José C. Alvarez, S. Nallusamy, Emma Ramos-Valle, André Paulino, Pedro Chavez
The main result of the implementation of this proposal is the improvement of productivity based on the reduction of the total picking time of 22.38%.
The main result is a reduction of the total retrieval time by 40% [32].
In the pilot study, a score of 93 points was obtained, which improved the initial of 29. 2.3 Demand forecasting The data considered for the demand prediction covers the company's customer market, mainly spare parts for mining projects, which are located in Peru.
However, this does not represent more than 3 minutes of variation, unlike the activities mentioned above, which had a reduction of up to 54 minutes.
Singh, Warehouse optimisation using demand data analytics - A case study-based approach, International Journal of Business Information Systems, 35(4) (2020) 519-538
Online since: July 2015
Authors: Roland Golle, Hartmut Hoffmann, Thorsten Gläsner, Wolfram Volk, Christina Sunderkötter, Tobias Schaffner
Collaring tests show a reduction of residual formability through wear of up to 65% for high-strength heavy plates (plate thickness > 3 mm). 1 Introduction Production processes involving cutting, such as shear cutting, account for a large proportion of all process steps in the sheet metal industry.
The cutting force increases degressively to begin with a simultaneous reduction of the cross-section of the material.
This demonstrated a reduction of the expansion ratio during collaring as a result of tool wear of up to 65%.
Table 1: Mechanical properties of the test material HDT780C [10] HDT780C (SZBS800) Parameters Formula Unit Test material Data sheet Rolling direction 0° 45° 90° Minimum tensile strength Rm MPa 804 796 818 800 - 980 Minimum yield strength Rp0,2 MPa 676 681 731 - Yield strength ratio Rp0.2/Rm % 84.08 85.58 89.3 - Elongation A80 % 15.5 14.2 13.1 ≥ 12 Table 2: Chemical composition of HDT780C [10] C S Mn P S Al B Percentages by weight ≤ 0.11 ≤ 0.5 ≤ 2 ≤ 0.02 ≤ 0.01 ≥ 0.015 ≤ 0.004 4 Results The results concerning the limit expansion ratio λ [1] obtained from the collaring tests carried out as part of the various wear tests are displayed and compared in the following diagram on the basis of 3.5 mm HDT780C.
This initially leads to a reduction of the process forces compared to the original condition.
Online since: October 2021
Authors: Penpun Wetwitayaklung, Nattawat Nattapulwat, Burin T. Sriwong
After data collection was done, it was analyzed by using descriptive statistics.
Two versions of self-administered questionnaires were used in data collection.
Data collection Data was collected from two parts both before and after formulation in capital district of Nakhon Pathom province.
Data was collected by self-administered questionnaire and analyzed using descriptive statistics.
SurveyResults General data of participants During 1st-15th November 2019, the data were collected from five distinct groups of total 30 participants which were tourists, dental patients, pharmacy students at Silpakorn University, office workers and dentists.
Online since: September 2012
Authors: Chun Yang Wang, Hong Bing Li, Jian Gong
In this algorithm, the signal subspace is obtained using MSWF, which avoids the known expected signal, the estimation of the virtual data autocorrelation matrix and eigen-decomposition.
However, it would decrease the virtually extended array aperture; it also needs to estimate the data autocorrelation matrix and eigen-decompose it, which involves a large amount of computational cost when the virtual sensor array is large.
According to the theorem 1 of [8], we know that if the cross-correlation between the observation data and the desired signal lies in the signal subspace, the signal subspace can be constructed by adopting the forward recursions of the MSWF: (4) To begin with, let (5) be the observation data and (6) be the desired signal.
Then the cross-correlation between the observation data and the desired signal can be calculated as (7) where .
Partitioning the observation data with the matched filter in a manner similar to that of the MSWF, we can obtain the desired signal and the observation data at the ith stage by (9) (10) Then the matched filter is calculated by (11) From (6)-(11), it is easy to prove that the matched filters are orthogonal to each other, so can form the signal subspace.
Online since: July 2008
Authors: Fabrice Pierron
For instance, Fig. 3 shows the bending stiffness reduction map obtained experimentally on a carbonepoxy unidirectional plate tested in bending [19].
The damage was simulated by removing two plies from the back surface of the plate, resulting in a nominal stiffness reduction of about 30%.
Deflectometry set-up Stiffness reduction Fig. 3.
Deflectometry set-up, damaged plate and identified stiffness reduction map.
Determination of the mechanical behaviour of biological tissues is a key issue in the early detection of cancerous tumours (stiff tumours embedded in softer tissues) or in the production of data to establish models of the human body for crash simulation, for instance.
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