Discussion on Training Students’ Ability to Solve Complex Engineering Problems from the Perspective of Professional Certification

2018 ◽  
pp. 1-7 ◽  
Author(s):  
Lina Yu ◽  
Haizheng Gao ◽  
Fang Hou ◽  
Zhengping Hu ◽  
Zhaohui Li ◽  
...  
Keyword(s):  
Professional Certification ◽  
Engineering Problems ◽  
Complex Engineering

A Novel Paradigm for Engineering Education: Virtual Internships With Individualized Mentoring and Assessment of Engineering Thinking

2015 ◽  
Vol 137 (2) ◽  
Author(s):  
Naomi C. Chesler ◽  
A. R. Ruis ◽  
Wesley Collier ◽  
Zachari Swiecki ◽  
Golnaz Arastoopour ◽  
...  
Keyword(s):  
Engineering Education ◽  
First Year ◽  
Collaborative Environment ◽  
Large Numbers ◽  
Engineering Problems ◽  
Complex Engineering ◽  
Potential Impact

Engineering virtual internships are a novel paradigm for providing authentic engineering experiences in the first-year curriculum. They are both individualized and accommodate large numbers of students. As we describe in this report, this approach can (a) enable students to solve complex engineering problems in a mentored, collaborative environment; (b) allow educators to assess engineering thinking; and (c) provide an introductory experience that students enjoy and find valuable. Furthermore, engineering virtual internships have been shown to increase students'—and especially women's—interest in and motivation to pursue engineering degrees. When implemented in first-year engineering curricula more broadly, the potential impact of engineering virtual internships on the size and diversity of the engineering workforce could be dramatic.

scholarly journals Remote-controlled insect navigation using plasmonic nanotattoos

2020 ◽  
Author(s):  
Sirimuvva Tadepalli ◽  
Sisi Cao ◽  
Debajit Saha ◽  
Keng-Ku Liu ◽  
Alex Chen ◽  
...  
Keyword(s):  
Region Of Interest ◽  
Biological Tissues ◽  
Plasmonic Nanostructures ◽  
Insect Navigation ◽  
Non Invasive ◽  
Limiting Step ◽  
Engineering Problems ◽  
Complex Engineering ◽  
Recognition Elements ◽  
Insect Antenna

Developing insect cyborgs by integrating external components (optical, electrical or mechanical) with biological counterparts has a potential to offer elegant solutions for complex engineering problems.1 A key limiting step in the development of such biorobots arises at the nano-bio interface, i.e. between the organism and the nano implant that offers remote controllability.1,2 Often, invasive procedures are necessary that tend to severely compromise the navigation capabilities as well as the longevity of such biorobots. Therefore, we sought to develop a non-invasive solution using plasmonic nanostructures that can be photoexcited to generate heat with spatial and temporal control. We designed a ‘nanotattoo’ using silk that can interface the plasmonic nanostructures with a biological tissue. Our results reveal that both structural and functional integrity of the biological tissues such as insect antenna, compound eyes and wings were preserved after the attachment of the nanotattoo. Finally, we demonstrate that insects with the plasmonic nanotattoos can be remote controlled using light and integrated with functional recognition elements to detect the chemical environment in the region of interest. In sum, we believe that the proposed technology will play a crucial role in the emerging fields of biorobotics and other nano-bio applications.

An enhanced surrogate-assisted differential evolution for constrained optimization problems

2021 ◽  
Author(s):  
Rafael de Paula Garcia ◽  
Beatriz Souza Leite Pires de Lima ◽  
Afonso Celso de Castro Lemonge ◽  
Breno Pinheiro Jacob
Keyword(s):  
Differential Evolution ◽  
Optimization Problems ◽  
Optimization Procedure ◽  
Nearest Neighbors ◽  
Engineering Optimization ◽  
Optimal Solutions ◽  
Objective Functions ◽  
Constrained Optimization Problems ◽  
Engineering Problems ◽  
Complex Engineering

Abstract The application of Evolutionary Algorithms (EAs) to complex engineering optimization problems may present difficulties as they require many evaluations of the objective functions by computationally expensive simulation procedures. To deal with this issue, surrogate models have been employed to replace those expensive simulations. In this work, a surrogate-assisted evolutionary optimization procedure is proposed. The procedure combines the Differential Evolution method with a Anchor -nearest neighbors ( –NN) similarity-based surrogate model. In this approach, the database that stores the solutions evaluated by the exact model, which are used to approximate new solutions, is managed according to a merit scheme. Constraints are handled by a rank-based technique that builds multiple separate queues based on the values of the objective function and the violation of each constraint. Also, to avoid premature convergence of the method, a strategy that triggers a random reinitialization of the population is considered. The performance of the proposed method is assessed by numerical experiments using 24 constrained benchmark functions and 5 mechanical engineering problems. The results show that the method achieves optimal solutions with a remarkably reduction in the number of function evaluations compared to the literature.

scholarly journals Recent Advances on Swarm Intelligence for Solving Complex Engineering Problems

2018 ◽  
Vol 2018 ◽  
pp. 1-1
Author(s):  
Ricardo Soto ◽  
Eduardo Rodriguez-Tello ◽  
Eric Monfroy
Keyword(s):  
Swarm Intelligence ◽  
Recent Advances ◽  
Engineering Problems ◽  
Complex Engineering

A Mesoscopic Damage Model for Predicting the Plastic-Creep Life of Welded Joints Subjected to Quasi-Static Loading

2010 ◽  
Author(s):  
Khosrow Zarrabi ◽  
Jad Jelwan ◽  
Tahir Mahmood
Keyword(s):  
Welded Joints ◽  
Welded Joint ◽  
Damage Model ◽  
Life Assessment ◽  
Research Activities ◽  
Proposed Model ◽  
Engineering Problems ◽  
Complex Engineering ◽  
The Subject ◽  
Plastic Creep

The integrity and life assessment of welded joints operating at high temperatures and subjected to non-linear damage mechanisms such as plasticity and creep are complex engineering problems and currently the subject of intensive research activities. This paper gauges the accuracy of a model that takes into account creep and plasticity deformation proposed by Zarrabi et al. to a butt welded thick tube. It is shown that the proposed model can predict the life of this welded joint with an error of 1%. Currently the model is being extended to include fatigue deformation.

scholarly journals Improvement of Gypsum Soil by Using Polyurethane to Reduce Erosion and Solubility of Irrigation Canals

2018 ◽  
Vol 7 (4.20) ◽  
pp. 372
Author(s):  
Maysam Th. Al-Hadidi ◽  
Atheer G. Ibrahim
Keyword(s):  
Water Resources ◽  
Dynamic Load ◽  
Irrigation Canals ◽  
Engineering Problems ◽  
Complex Engineering ◽  
Water Resources Engineering

The reducing of erosion and the solubility of irrigation canals soils which constructed on gypsum soil is important in civil and water resources engineering. The main problem of gypsum soils is the presence of gypsum which represents one of most complex engineering problems, especially when accompanied by the moving of water which represent dynamic load along the canal. There are several solutions to this problem, in this research “Poly urethane” is used to give the gypsum soil sufficient hardness to reduce the solubility and erosion, after compacting the soil in the canal, percentages of Poly urethane was used to making cover to the soil by mixing percent of soil with Poly urethane, and the ratio was as follows: (5 and 10) % and the percent of Poly urethane were as follows: 6%, 10%, and 12%. The collapsibility of the soil was calculated by measuring the height of the soil after the passage of water along the canal. This collapsibility was used as an index to calculate the erosion and the solubility of gypsum within the soil. The results show that the best percentage of poly urethane is (10%), which gave small value in corrosion about (3%) at 28 days.  

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