scholarly journals Engineering Project Real-time Objective Monitor Based on Grid Management and Buffer Analysis

2016 ◽  
Vol 10 (1) ◽  
pp. 794-806
Author(s):  
Heyun Dong ◽  
Jian Zhang ◽  
Shisen Lv
Keyword(s):  
Real Time ◽  
Grid Cell ◽  
Project Managers ◽  
Engineering Project ◽  
The Real ◽  
Buffer Analysis ◽  
Set Up ◽  
Tennis Court ◽  
Engineering Projects ◽  
Grid Management

Engineering projects often face a great number of uncertainties which will lead projects to deviate from the anticipated objective. This paper carried out a detailed study on real-time monitoring of objective deviation in engineering projects, and it will help project managers monitor the state of engineering project better. A Grid Management (GM) method was used to set up a monitor structure, and the real-time monitor grid structure was constructed in level, milestone and objective dimensions. The buffer analysis method was designed to measure the level of objective deviation. The objective deviation level is based on the result of the grid cell buffer analysis. The principal part construction of Shenyang Olympic Tennis court was selected as the example to illustrate the real-time monitor process in detail. The results indicated that the proposed real-time objective monitor method makes it possible for project manager to real-time monitor all the main objectives in one model and carry out management, and decision-making in a more macro perspective.

A Real-Time DSPI System for Measuring Surface Deformation in Clamped Bolted Joints

2008 ◽  
Author(s):  
Aidong Meng ◽  
Sayed A. Nassar
Keyword(s):  
Real Time ◽  
Vibration Isolation ◽  
Surface Deformation ◽  
Plane Surface ◽  
Speckle Pattern ◽  
The Real ◽  
Time Deformation ◽  
Out Of Plane ◽  
Phase Data ◽  
Set Up

A Digital Speckle Pattern Interferometry (DSPI) system is developed for the real-time measuring and monitoring the out-of-plane surface deformation around tightened threaded fasteners that are used to clamp bolted assemblies. Spatial phase shifting is employed to quantitatively determine the distribution of phase data by introducing a spatial carrier fringe pattern to the speckle interferogram. This is achieved by leading the object and reference beams to two separate apertures. The configuration is also suitable for collecting the real-time deformation during bolt tightening. The experimental DSPI system is set-up with optical components on a vibration-isolation table. A Matlab software is developed for the image acquisition and phase data calculation, which yields the out-of-plane surface deformation caused by the bolt preload. An aluminum joint is used with an M12 steel fastener. For miniature screw application, however, a plastic joint is used for collecting data.

Application of 3D Virtual Scene Building Technology Based on OSG in Gas Station Training Simulation System

2014 ◽  
Vol 918 ◽  
pp. 252-257
Author(s):  
Jian Mei Song ◽  
Zhong Hua Yan ◽  
Hao Yuan
Keyword(s):  
Real Time ◽  
Simulation System ◽  
Virtual Scene ◽  
The Real ◽  
Building Technology ◽  
Model Library ◽  
Extensible Markup ◽  
Training Simulation ◽  
Gas Station ◽  
Set Up

For a gas station training simulation system, the real time and reality of scene directly affect the application of system. In order to solve this problem, we used 3D virtual scene building technology based on OpenSceneGraph (OSG) to build gas station scene. Technology of levels of detail (LOD) was used to improve the real-time ability of the system during entity modeling. And then based on 3D entity model library and information files in Extensible Markup Language (XML), we built the parametric library and set up the gas station scene, which provided function information and attribute information. Experimental results show that the scene of virtual gas station can not only greatly improve the reality and immersion of system, but also well support the real-time simulation. Now, 3D virtual scene building technology based on OSG has applied successfully in gas station training simulation system, which provides feasible evidence for engineering simulation to solve practical problems.

Engineering projects real-time supervision mechanism based on grid management

2014 ◽  
Vol 19 (4) ◽  
pp. 502-507
Author(s):  
Yun-na Wu ◽  
He-yun Dong ◽  
Hao-bo Zhang ◽  
Jin-ying Zhang
Keyword(s):  
Real Time ◽  
Supervision Mechanism ◽  
Engineering Projects ◽  
Grid Management

scholarly journals Estimation at Completion in Civil Engineering Projects: Review of Regression and Soft Computing Models

2021 ◽  
Vol 2 (2) ◽  
pp. 1-12
Author(s):  
Almahdi Mohamed Araba ◽  
Zubair Ahmed Memon ◽  
Musab Alhawat ◽  
Mumtaz Ali ◽  
Abdalrhman Milad
Keyword(s):  
Soft Computing ◽  
Construction Projects ◽  
Civil Engineering ◽  
Project Managers ◽  
Current Status ◽  
Engineering Project ◽  
Critical Problems ◽  
Future Direction ◽  
Engineering Projects

Construction projects are usually associated with several challenges owing to the varying process during the project lifetime. Hence, the final cost of any civil engineering project is influenced by many factors. There are numerous ways of determining the final cost of a project, however, the most essential approach is the Estimate at Completion (EAC) technique. This technique is mostly favored because it considers the probability of risks and project performance. Furthermore, EAC helps project managers in the definition and determination of the critical problems expected during the project period and the likely solutions toward these problems. In this review research, the basic empirical, regression and advanced soft computing methodologies adopted for the EAC computation, were surveyed and reported in detail. The review established on the base to recognize the modern advancement of the soft computing in computing the EAC with accurate, reliable and robust manner. The review was highlighted the main literature limitation, current status and possible future direction.

Model based real-time control of sewer system using fuzzy-logic

1997 ◽  
Vol 36 (8-9) ◽  
pp. 343-347 ◽  
Author(s):  
L. Fuchs ◽  
T. Beeneken ◽  
P. Spönemann ◽  
C. Scheffer
Keyword(s):  
Fuzzy Logic ◽  
Real Time ◽  
Control Device ◽  
Real Time Control ◽  
Sewer System ◽  
Rule Based ◽  
The Real ◽  
Time Control ◽  
Set Up ◽  
Final System

This paper describes the use of the sewer model HYSTEM-EXTRAN in combination with a rule based control device using fuzzy-logic to simulate the real-time control of a sewer system. The rules for the control of the system were set up with the help of optimization procedures. The advantage of the procedure is proved by comparing the uncontrolled versus the controlled state in a simulated mode for an existing sewer system. The final system was installed and tested within the sewer system.

Cost-effective test set-up for the real-time measurement of the triboelectric energy harvester

2021 ◽  
pp. 107754632110564
Author(s):  
Amit Sharma ◽  
Poonam Agarwal
Keyword(s):  
Real Time ◽  
Energy Harvester ◽  
Cost Effective ◽  
Time Measurement ◽  
The Real ◽  
Precise Control ◽  
Real Time Measurement ◽  
Input Parameters ◽  
Set Up ◽  
The Impact

Operational parameters, the force and the frequency of contact affect the triboelectric energy harvester output performance. There is a need for the precise control of input parameters and the real-time measurement of the output parameter to quantify the effect of operating parameters. In this paper, an in-house developed cost-effective experimental set-up (approximately $2600) is presented, enabling the variation in contact frequency and measures of the impact force, voltage and current in real-time. The percentage of uncertainty in the measurement of voltage, current and force are 1.63%, 1.29% and 1.83%, respectively. The proposed set-up can be used to perform a reliable performance analysis and comparison of the vertical contact-separation mode triboelectric energy harvesters by real-time measurement of input and output parameters with precise control of input parameters.

Analysis and Processing of Sampled Measurement Values Transmission Delay for Smart Substations Processing Layer

2014 ◽  
Vol 635-637 ◽  
pp. 865-869
Author(s):  
Hui Wang ◽  
Cheng Hui Wu ◽  
Yang Zhou
Keyword(s):  
Real Time ◽  
Phase Error ◽  
Transmission Delay ◽  
Phase Compensation ◽  
The Real ◽  
Time Performance ◽  
Safety And Reliability ◽  
Values Transmission ◽  
Set Up ◽  
Smart Substation

Safety and reliability are the key of the smart substation, which requires the transmission of sampled measurement values (SMV) is in real-time and accuracy. Therefore this paper analyzes all aspects of SMV delay. The model is set up and the method of phase compensation delay is put forward through analyzing, and an engineering example is given. The conclusion shows that the algorithm can reduce the phase error of SMV and improve the real-time performance of SMV transmission.

The Real-Time Neural Genesis of a Punchline

2014 ◽  
Author(s):  
Irving Biederman ◽  
Ori Amir
Keyword(s):  
Real Time ◽  
The Real

Real-Time System for Sending Data from Three Clients to One Server with MATLAB

2015 ◽  
Vol 2 (1) ◽  
pp. 35-41
Author(s):  
Rivan Risdaryanto ◽  
Houtman P. Siregar ◽  
Dedy Loebis
Keyword(s):  
Information System ◽  
Real Time ◽  
Time System ◽  
Real Time System ◽  
The Real ◽  
Performance Time ◽  
Data Process ◽  
Effectiveness And Efficiency

The real-time system is now used on many fields, such as telecommunication, military, information system, evenmedical to get information quickly, on time and accurate. Needless to say, a real-time system will always considerthe performance time. In our application, we define the time target/deadline, so that the system should execute thewhole tasks under predefined deadline. However, if the system failed to finish the tasks, it will lead to fatal failure.In other words, if the system cannot be executed on time, it will affect the subsequent tasks. In this paper, wepropose a real-time system for sending data to find effectiveness and efficiency. Sending data process will beconstructed in MATLAB and sending data process has a time target as when data will send.

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