Results Obtained With a Method to Improve Engineering Problem Formulation

1992 ◽  
Vol 114 (2) ◽  
pp. 218-222
Author(s):  
C. W. Ennis ◽  
S. W. Gyeszly
Keyword(s):  
Systems Design ◽  
Problem Formulation ◽  
Engineering Problem ◽  
Performance Criteria ◽  
Engineering Systems ◽  
Research Project ◽  
Technical Performance ◽  
Performance Requirements ◽  
And Performance

The objective of this research project was to improve problem formulation in engineering systems design. A problem formulation method was developed which uses five characteristic aspects (time, dimensions, value, physical matter, and people) to assist in identifying boundary and performance criteria, and technical performance requirements as a means of expressing them. When tested in controlled task, guided response experiments, the method was shown to improve the quality of problem statements.

Advancing Waste to Energy Technology Design and Performance of EPI Fluidized Bed RDF-Fired Power Plants Worldwide

2002 ◽  
Author(s):  
Michael L. Murphy
Keyword(s):  
Power Plants ◽  
Systems Design ◽  
Energy Systems ◽  
The United States ◽  
Waste To Energy ◽  
Energy Technology ◽  
Performance Requirements ◽  
And Performance ◽  
Energy Products ◽  
Changes Over Time

Energy Products of Idaho has designed and installed numerous waste to energy systems in the United States and Europe, with others currently under development. Among the latest are a number of installations in operation and/or construction in Italy. The systems design have undergone some changes over time to stay ahead of changing regulations performance requirements.

scholarly journals Integrated Environmental Design and Robotics Workflow for Double-Skin Facade Perforation Onsite

2021 ◽  
Author(s):  
Ahmed Khairadeen Ali ◽  
One Jae Lee
Keyword(s):  
Environmental Performance ◽  
Early Stage ◽  
Digital Design ◽  
Performance Criteria ◽  
Design Parameters ◽  
Stage Design ◽  
Performance Requirements ◽  
Double Skin ◽  
Early Stage Design ◽  
And Performance

In contemporary design practices, there is a disconnect between the design techniques used for early-stage design experimentation and performance analysis, and those used for the manufacture and construction. This study addresses the problems in developing an integrated digital design workflow and provides a research framework for integrating environmental performance requirements with robotic manufacturing processes on a construction site. The proposed method enables the user to import a design surface, identify design parameters, set several environmental performance goals, and thereafter simulate and select a robotic building strategy. Based on these inputs, design alternatives are developed and evaluated, considering their robotically simulated constructibility, in terms of their performance criteria. To validate the proposed method, the design is evaluated in an experiment wherein a double-skin facade perforation is generated using the proposed methodology. The results suggest a heuristic feature to improve the simulated robotic constructibility. Moreover, the functionality of the prototype is demonstrated.

Design and Analysis of Nut Crimping Machines

2012 ◽  
Vol 233 ◽  
pp. 88-91 ◽  
Author(s):  
Zhou Ling Wei ◽  
Bo Fu
Keyword(s):  
High Strength ◽  
The Body ◽  
Hydraulic Control ◽  
Market Demand ◽  
Body Structure ◽  
Performance Requirements ◽  
Control Precision ◽  
Working Principle ◽  
And Performance

In view of the growing market demand for self-locking nuts and the relative backward processing technology, a nut crimping machine was studied. According to the working principle of nut crimping and performance requirements, the body structure of the nut crimping machine was designed. The stress analysis of the main stressed components was performed using simulation Xpress function of SolidWorks. Results show that body structure has high strength and rigidity. Based on electro-hydraulic proportional technology, the hydraulic control circuit was developed. The design results improve the control precision on speed and pressure of the nut crimping machine and ensure the quality of self-lucking nuts.

A Validity Investigation of the Achievement Anxiety Test

1981 ◽  
Vol 41 (4) ◽  
pp. 1215-1222
Author(s):  
Barbara S. Plake ◽  
Elizabeth P. Smith ◽  
Don C. Damsteegt
Keyword(s):  
Factor Structure ◽  
Predictive Validity ◽  
Concurrent Validity ◽  
Performance Criteria ◽  
Underlying Factor ◽  
Anxiety Test ◽  
The Status ◽  
Achievement Anxiety ◽  
And Performance

Since 1960 educational researchers have been using the Achievement Anxiety Test (AAT), which presumably measures independent aspects of achievement anxiety: facilitating and debilitating components. In several earlier investigations, developers have reported construct and predictive validity of the subscales from their use of anxiety measures and performance criteria. However, the hypothesized independence of the subscales and underlying factor structure of the test have been overlooked. Because the two subscales have been used to provide a difference score, the status of the interrelationship between the subscales is of concern. This study was concerned with the concurrent validity of the AAT and with its factor structure to provide empirical evidence about the quality of AAT.

scholarly journals Double-Skin Facade Perforation Workflow Onsite Using Robot Arm

2021 ◽  
Author(s):  
Ahmed Khairadeen Ali ◽  
One Jae Lee
Keyword(s):  
Environmental Performance ◽  
Early Stage ◽  
Digital Design ◽  
Performance Criteria ◽  
Design Parameters ◽  
Robot Arm ◽  
Performance Requirements ◽  
Double Skin ◽  
Early Stage Design ◽  
And Performance

In contemporary design practices, there is a disconnect between the design techniques used for early-stage design experimentation and performance analysis, and those used for the manufacture and construction. This study addresses the problems in developing an integrated digital design workflow and provides a research framework for integrating environmental performance requirements with robotic manufacturing processes on a construction site. The proposed method enables the user to import a design surface, identify design parameters, set several environmental performance goals, and thereafter simulate and select a robotic building strategy. Based on these inputs, design alternatives are developed and evaluated, considering their robotically simulated constructibility, in terms of their performance criteria. To validate the proposed method, the design is evaluated in an experiment wherein a double-skin facade perforation is generated using the proposed methodology. Initial results suggest a heuristic feature to improve the simulated robotic constructibility. Moreover, the functionality of the prototype is demonstrated.

Heat Treatment Technology and Property Study on 40Cr of Shearer Picks Body

2013 ◽  
Vol 791-793 ◽  
pp. 782-785
Author(s):  
Chun Hong Zhang ◽  
Ning Zhang ◽  
Yue Wang
Keyword(s):  
Heat Treatment ◽  
Heating Temperature ◽  
Poor Quality ◽  
The Body ◽  
Economic Losses ◽  
Treatment Technology ◽  
Performance Requirements ◽  
Tempering Treatment ◽  
And Performance

Cutting tooth especially due to the poor quality of the shearer brazing, caused enormous economic losses each year in our country, which caused great pick consumption and delayed hours, and then resulting in reduced efficiency. The tooth body wear of the whole shearer picks accounts for half of its overall failure. In this experiment, the heat treatment which included heating temperature, soaking time, and cooling, etc. was designed by service conditions and performance requirements of the body material 40Cr. The change of microstrcture and mechanical property was analysed by quenching and tempering treatment, thus prolong the service life of shearer picks by improving the comprehensive performance of the tooth body material.

scholarly journals Website Quality and Performance Indicators Including Ratio Numbers – A Study of German and Danish SME Companies

2016 ◽  
Vol 1 (3) ◽  
pp. 22 ◽  
Author(s):  
Heiko Henning Thimm ◽  
Karsten Boye Rasmussen ◽  
Wolfgang Gohout
Keyword(s):  
Performance Indicators ◽  
Economic Indicators ◽  
Term Study ◽  
Research Project ◽  
Website Quality ◽  
Long Term Study ◽  
And Performance ◽  
European Production

<p>From an investment into a good company website usually economic advantages are expected. However, there only exist a few studies about the correlations between economic indicators and the quality of company websites. To investigate these correlations is one of the objectives of an international long-term study of 1,000 small and medium-sized European production companies in Germany and Denmark.</p><p>This article gives an overview of the research project with an emphasis on the statistical investigations, the obtained results, and possible interpretations. It is demonstrated how in correlation analyses one can obtain insights also from ratio numbers such as the financial gearing.    </p>

Design and Develop the Jig and Fixtures for HLV 30 Piercing Machine

2012 ◽  
Vol 576 ◽  
pp. 781-784
Author(s):  
Mohd Radzi Haji Che Daud ◽  
Mohamad Faizal Bin Abdul Nasir
Keyword(s):  
Production Quality ◽  
Production Data ◽  
Production Plant ◽  
Research Project ◽  
Engineering Company ◽  
And Performance

HLV 30 Piercing Machine produced by SMG Pressen, an engineering company from Germany that exercising the task of piercing of LPG cylinder for valving process. This particular machine is used by LPG cylinder production plant, and one of them is Keloil LPG Cylinders Sdn. Bhd. This research project intend to study how this piercing process affects the production quality of the LPG gas and also to develop and design the new jig and fixture for this machine to get the accurate tolerance for the piercing process and decrease the index of rejection of the cylinder. In this research, we try to analyze the production data and try to make a new design of fixtures for this machine to get the better result and performance for this machine.

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