scholarly journals Quality model construction and continuous improvement mechanism design in OBE education

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Wang Yong ◽  
Radwan Kharabsheh ◽  
Francois Bester
Keyword(s):  
Education Reform ◽  
Continuous Improvement ◽  
Three Dimensional ◽  
Quality Model ◽  
Loop Control ◽  
Daily Monitoring ◽  
Whole Process ◽  
Achievement Evaluation ◽  
Design Characteristics ◽  
Evaluation Mechanism

Abstract The construction of quality model for outcome-based education (OBE) Education Mode is an important foundation to guarantee the effective implementation of OBE education reform. The quality model for OBE Education Mode is constructed by layers in this paper according to the reverse design characteristics of OBE Education Mode, which is centred on the students’ learning outcome quality, and in accordance with the closed-loop control requirements for quality. Based on the design of the quality monitoring mechanism, the achievement evaluation mechanism and the feedback and improvement mechanism, a three-dimensional, linked and whole-process quality model system is formed with daily monitoring as the means, the achievement evaluation as the core, the feedback of evaluation result as the focus and the continuous improvement as the goal. Finally, the suggestions are made at the level of implementation to further guarantee the operation effect of the quality model, and so as to offer the important assurance for overall promotion of OBE Education Mode reform.

Design characteristics and aesthetics in evolutionary design of architectural forms directed by fuzzy evaluation

2020 ◽  
Vol 34 (2) ◽  
pp. 147-159
Author(s):  
Agnieszka Mars ◽  
Ewa Grabska ◽  
Grażyna Ślusarczyk ◽  
Barbara Strug
Keyword(s):  
Architectural Design ◽  
Fitness Function ◽  
Three Dimensional ◽  
Fuzzy Evaluation ◽  
Design Requirements ◽  
Characteristic Features ◽  
Design Characteristics ◽  
Evaluation Mechanism ◽  
Evolutionary Operators ◽  
Aesthetic Measure

AbstractThis paper deals with design characteristics-oriented approach to architectural design based on the combination of three methods – recognition, generation, and evaluation. Design characteristics are understood as a set of specific features which constitute a discriminant of a class of architectural forms. The Biederman recognition-by-components theory is used to recognize the design structure. An evolutionary algorithm, which serves as a generative tool, is driven by the fuzzy evaluation based on Birkhoff's aesthetic measure. Phenotypes of architectural objects are seen as configurations of Biederman's basic components essential for visual perception. Genotypes of these objects are represented by graphs with bonds, where nodes represent object components, node bonds represent component surfaces, while graph edges represent relations between surfaces. Graph evolutionary operators, that is, crossover and mutation, are defined in such a way that they preserve characteristic features seen as design requirements specified for designed objects. The fitness function is determined by the fuzzy evaluation of designs based on Birkhoff's aesthetic measure for polygons adapted for three-dimensional solids. The approach is illustrated by examples of designing objects with the use of a fuzzy evaluation mechanism, which takes into account both aesthetic criteria and the degree to which design requirements corresponding to object characteristic features are satisfied.

scholarly journals Research on 3D Sampling and Monitoring of Power Supplies Based on Augmented Reality (AR) Technology

CONVERTER ◽  
2021 ◽  
pp. 896-901
Author(s):  
Chao Wang, Xi Chen, Ying Wang
Keyword(s):  
Augmented Reality ◽  
Three Dimensional ◽  
Power Supplies ◽  
Management Problem ◽  
Whole Process ◽  
Detection And Tracking ◽  
Sampling Inspection ◽  
Infrastructure Project ◽  
Dimensional Object ◽  
Monitoring Service

In this paper, three-dimensional object detection and tracking based on neural network is studied. The application of Augmented Reality (AR) in power material sampling monitoring service in China Power Grid is presented, relying on the AR technology of 5G Internet of things to realize real-time capture of the information from power network infrastructure project to goods sampling inspection and monitoring, and to solve the difficult business management problem that many parties need to participate on the spot but can not guarantee the timeliness, the AR technology is used to mark, early-warning and trace the source of the problem materials, so as to ensure the authenticity and traceability of the whole process.

The adaptable amphibious wheel-legged robot

2018 ◽  
Vol 42 (3) ◽  
pp. 323-339
Author(s):  
Jicheng Liu ◽  
Jinshuai Yang ◽  
Binglu Yan ◽  
Zheng Liu
Keyword(s):  
Large Diameter ◽  
Kinematic Model ◽  
Three Dimensional ◽  
Legged Robot ◽  
Loop Control ◽  
Walking Gait ◽  
Closed Loop Control System ◽  
Loop Control System ◽  
Amphibious Robot ◽  
Foot Trajectory

A new category of large-diameter adaptable amphibious wheel-legged robot is proposed in this paper. The proposed mechanism can climb obstacles better than existing designs. The Denavit–Hartenberg (D–H) coordinate system is used for kinematic analysis, and the constructed kinematic model is used to solve for these joint variables for a redundant robot. The control strategy is to plan both the foot trajectory of the amphibious robot, to optimize the operational performance in special environments, as well as the walking gait. Then the closed-loop control system is used. A simulation is used to verify the usefulness of the planned foot trajectory and walking gait for an entire running cycle, and a circuit is designed to solve a communication problem between the Arduino and the AX-12 servo. Finally, the foot trajectory of a single robot leg is captured by a three-dimensional motion-capture system to verify the rationality of the foot trajectory and walking gait.

Mechanism of Fast Transition of Pressure Pulsations in the Vaneless Space of a Model Pump-Turbine During Runaway

2019 ◽  
Vol 141 (12) ◽  
Author(s):  
Xiaoxi Zhang ◽  
Wei Zeng ◽  
Yongguang Cheng ◽  
Zhiyan Yang ◽  
Qiuhua Chen ◽  
...  
Keyword(s):  
Transient Flow ◽  
Characteristic Curve ◽  
Three Dimensional ◽  
Low Frequency ◽  
Vortex Structures ◽  
Pressure Pulsations ◽  
Pump Turbine ◽  
Whole Process ◽  
Time Variations ◽  
Flow Vortex

The pressure pulsations in the vaneless space of pump-turbines are extremely intense and always experience rapid time variations during transient scenarios, causing structural vibrations and even more serious accidents. In this study, the mechanism behind the rapid time variations of the vaneless space pressure pulsations in a model pump-turbine during runaway was analyzed through three-dimensional (3D) numerical simulations. These results show that the high-frequency pressure pulsation components originating from rotor–stator interactions (RSI) are dominant during the whole process. These components fluctuate significantly in frequency when the working point goes through the S-shaped region of the characteristic curve, with the amplitudes increasing. Meanwhile, some low-frequency pulsations are also enhanced and become obvious. These features can be attributed to the transitions of the inter blade vortex structures (IBVSs) to the forward flow vortex structures (FFVSs) and the back flow vortex structures (BFVSs) at the impeller entrance, when the pump-turbine operates in the region with S-shaped characteristics. The FFVSs mainly cause decreases in frequency and introduce low-frequency pulsations, while the BFVSs are responsible for the unstable fluctuations. These findings contribute to the understanding of how transient flow patterns evolve and may provide new ideas about avoiding severe pressure pulsations caused by rotating stalls in the pump-turbine during transient scenarios.

Investigation of intelligent reversible diaphragm using shape memory polymers

2017 ◽  
Vol 29 (7) ◽  
pp. 1500-1509 ◽  
Author(s):  
Ran Tao ◽  
Qing-Sheng Yang ◽  
Xia Liu ◽  
Xiao-Qiao He ◽  
Kim-Meow Liew
Keyword(s):  
Shape Memory ◽  
Strain Energy ◽  
Structural Parameters ◽  
Shape Memory Polymer ◽  
Three Dimensional ◽  
Nonlinear Finite Element Method ◽  
Three Dimensional Model ◽  
Initial State ◽  
Whole Process ◽  
Propellant Tank

This article describes design and analysis of a novel reversible diaphragm using shape memory polymer. The reversible diaphragm could be applied to space engineering, such as propellant tank of rocket. The shape memory polymer diaphragm can automatically recover to the initial state after the overturning deformation and thus can be used repeatedly. A three-dimensional model is established to study the overturning and recovery behavior of the shape memory polymer diaphragm.The nonlinear finite element method based on the thermodynamic constitutive equations of shape memory polymer is used to obtain pressure -displacement relations and strain energy variation of SMP diaphragm with approximately hemispherical shape in the whole process of the overturning deformation. The influence of structural parameters and temperature on the overturning and recover behavior is discussed.

Sandaozhuang Open-Pit Quality Block Modeling Based on Engineering Geological Profile

2014 ◽  
Vol 962-965 ◽  
pp. 959-963
Author(s):  
Ying Sun ◽  
Shu Ai Ma ◽  
Lang Huang ◽  
Huan Ming Zhou ◽  
Dong Tao Hu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Boundary Curve ◽  
Open Pit ◽  
Quality Model ◽  
Block Model ◽  
Body Contour ◽  
Ore Deposit ◽  
Model Based ◽  
Ore Body ◽  
Contour Model

Block model is the precondition of open-p it mine o ptimization boundary design and mining design. In this paper , after studying the ore deposit model that using the optimization boundary, p ut forward to establish ore deposit quality block model based on the proposed Sandaozhuang engineering geological profile . Using prospecting line profile CAD drawings that o btained during the exploration phase, us e two-dimensional coordinate conversion three-dimensional coordinates, the profile boundary curve smoothing, apply D elaunay triangulation and other technology to establish ore body contour model. Establish the ore body quality model based on the ore body contour model, use i nverse distance weighted method in geostatistics for the assignment of ore body quality model, get the Sandaozhuang open pit quality block model. And ba sed on this to estimate the reserves , lay the foundation for the follow work of the mine.

Welding Behavior Analysis of Stiffened Stainless Steel Structure

2008 ◽  
Vol 385-387 ◽  
pp. 413-416
Author(s):  
Hong Li ◽  
Hui Long Ren
Keyword(s):  
Stainless Steel ◽  
Three Dimensional ◽  
Steel Structure ◽  
Transient Temperature ◽  
Remaining Life ◽  
Whole Process ◽  
Transient Temperature Field ◽  
Damage Law ◽  
Residual Strains ◽  
Nonlinear Behaviors

Welding residual plastic strains and residual stresses are the product of complicated nonlinear behaviors of the structures during welding. The residual strains and stresses for stiffened stainless steel structure and welding fatigue analysis are studied in this paper. The three-dimensional transient temperature field is analyzed by FEM first. Doing the welding experiment for fundamental model is to verify the numerical results, the infrared thermograph is used to follow and record the whole process. The results of FEM are supported by experimental data. Then, the elastic-plastic-model is established to analyze the residual strains and stresses. Based on the stresses, loading and fatigue factors, according to Miner fatigue damage law, some fatigue behaviors such as fatigue life and remaining life are obtained.

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