Medical engineering problems at the third All-Russian Congress of Surgeons

1967 ◽  
Vol 1 (5) ◽  
pp. 295-296
Author(s):  
A. Geselevich
Keyword(s):  
Medical Engineering ◽  
The Third ◽  
Engineering Problems

scholarly journals Impacts of Conceive-Design-Implement-Operate Knowledge and Skills for Innovative Capstone Project

2019 ◽  
Vol 15 (10) ◽  
pp. 146
Author(s):  
Hanifah Jambari ◽  
Nurul Amalin Razali ◽  
Nur Hazirah Seth@Noh ◽  
Nurul Aini Mohd Ahyan ◽  
Mohamad Rasidi Pairan ◽  
...  
Keyword(s):  
Problem Solving ◽  
Scientific Revolution ◽  
Engineering Students ◽  
Medical Engineering ◽  
Student Knowledge ◽  
Knowledge And Skills ◽  
Industrial Landscape ◽  
Capstone Project ◽  
Engineering Problems ◽  
Research Questions

Nowadays, the competitions among countries to recruit engineering students as workers do not focus on talents, but also on the reserve of it. The advancement of education in engineering field plays a big part in enhancing comprehensive domestic strength because the scientific revolution will contribute to important modifications of the industrial landscape. Therefore, Conceive-Design-Implement-Operate (CDIO) understanding and techniques are required for enhancing this field of education particularly for innovation of capstone project. Thus, this study was identified student knowledge and skills consist of teamwork, problem-solving, and communication skills of the CDIO in capstone project involved two faculties which are Faculty of Biosciences & Medical Engineering (FBME) and Faculty of Electrical Engineering (FKE) at Universiti Teknologi Malaysia (UTM). Our respondents consist of 28 and 30 of third-year students from FBME and FKE respectively. Besides, this study also was identified the importance of the CDIO approach in the innovative capstone project. The method that used was a quantitative survey by using 5 Likert scale questionnaires. The average mean for all research questions indicated that the majority of respondents agreed that the CDIO knowledge and skills in the capstone project are important in engineering education. Hence, the engineering students must possess not only the skills such as teamwork, problem-solving, and communication but also needs more knowledge that helps them to employability and adapt to real-world engineering problems.

scholarly journals Three- dimensional numerical simulation analysis of the influence of structural parameters on the performance of air ejector

2021 ◽  
Vol 2045 (1) ◽  
pp. 012011
Author(s):  
L F Han ◽  
T J Liu ◽  
L Li ◽  
D Q Liu
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Structural Parameters ◽  
Three Dimensional ◽  
Calculation Model ◽  
Optimal Combination ◽  
The Third ◽  
Engineering Problems ◽  
Complex Engineering ◽  
Air Ejector

Abstract Nowadays, CFD technology has become the third tool to study hydrodynamics problems after theoretical analysis and experimental research, especially in dealing with and solving complex engineering problems such as supersonic. In this paper, using the method of control variables, the system studied a type air ejector structure parameters within a certain range changes affect the performance of the work by means of FLUENT, at the same time, the optimal combination of the structural parameters are given, then three dimensional numerical simulation of the optimal combination model, and the simulation value and experiment value has carried on the contrast and analysis, Compared with the two-dimensional and axisymmetric model, Three-dimensional calculation model is more reliable and reasonable.

An Effective Dynamic Evolutionary Algorithm for Engineering Problems

2012 ◽  
Vol 542-543 ◽  
pp. 294-301
Author(s):  
Qing Zhang ◽  
San You Zeng ◽  
Hai Qing Ye ◽  
Zheng Jun Li ◽  
Hong Yong Jing
Keyword(s):  
Evolutionary Algorithms ◽  
State Of The Art ◽  
Global Search ◽  
Benchmark Problems ◽  
The Third ◽  
Dynamic Technique ◽  
Effective Dynamic ◽  
Engineering Problems ◽  
General Test ◽  
Better Than

A dynamic evolutionary algorithms (DEA) is designed to solve engineering problems in this paper. The DEA algorithm makes two differences. (1) Dynamic technique is used to handle equality constraints. (2) Two unrelated crossovers (linear crossover and uniform crossover) are combined in the algorithm for avoiding duplicate search and then helping global search. In solving engineering problems, three steps are taken: a DEA algorithm is designed first, then after tested by general benchmark problems, it is improved, and the third step is that the improved DEA algorithm is applied to solve engineering problems. The general test suggests our DEA algorithm outperforms the compared state-of-the-art other algorithms. The experimental results in solving 5 engineering problems indicate that our method works much better than the compared state-of-the-art algorithms, especially, in global search.

scholarly journals Relaxation methods applied to engineering problems. VII. Problems relating to the percolation of fluids through porous materials

1941 ◽  
Vol 178 (972) ◽  
pp. 1-17 ◽  
Keyword(s):  
Porous Materials ◽  
Velocity Potential ◽  
A Priori ◽  
Fluid Pressure ◽  
Relaxation Method ◽  
Sufficient Accuracy ◽  
Relaxation Methods ◽  
The Third ◽  
Fluid Field ◽  
Engineering Problems

The accepted theory of percolation of fluids through porous materials (which is based on Darcy’s law of resistance) indicates that the velocities can be calculated from a velocity-potential which, in two-dimensional motion, is plane-harmonic within the fluid field. The associated stream function, and the fluid pressure, are also plane-harmonic, so in cases where all boundaries are known their determination is an ordinary problem in plane-potential theory. But in cases where a free surface exists (as in the percolation of water through earth dams), its shape is not known a priori, consequently orthodox methods cannot be applied. Here the relaxation method developed in earlier papers is shown to be applicable without special assumptions, and to yield results of more than sufficient accuracy. Three typical examples are treated, the third involving ‘refraction’ of the lines of flow and pressure at the junction of two materials of different porosity.

scholarly journals The ‘ I 3 ’ generalization of the Galileo–Rankine tension criterion

2014 ◽  
Vol 470 (2172) ◽  
pp. 20140568 ◽  
Author(s):  
R. Lagioia ◽  
A. Panteghini ◽  
A. M. Puzrin
Keyword(s):  
Stress Tensor ◽  
Structural Engineering ◽  
Constitutive Models ◽  
Physical Significance ◽  
The Third ◽  
Third Invariant ◽  
Engineering Problems ◽  
Principal Stress Space ◽  
Rankine Criterion ◽  
New Criterion

The paper presents a new tension failure criterion which generalizes the so-called Galileo–Rankine formulation. The criterion can be used as a component of the so-called perfectly no-tension model for masonry and cements as well as for establishing a tension cut-off in complex constitutive models for soils, granular materials and powders. The criterion is described by means of a very concise equation based on the third invariant of the stress tensor, approximating the boundaries of the compressive octant of the principal stress space. This sheds new light on the physical significance of the third invariant of the stress tensor. The new criterion has been validated against two known analytical solutions for no-tension materials and also effectively applied for solving two geotechnical and structural engineering problems. The proposed formulation allows for an efficient implementation in finite-element programmes, removing some of the numerical difficulties associated with the Galileo–Rankine criterion.

scholarly journals New far-field extrapolation method for the computation of electric fields

2021 ◽  
Vol 51 (3) ◽  
Author(s):  
Xin Yang
Keyword(s):  
Electric Fields ◽  
Approximation Method ◽  
Time Domain ◽  
Far Field ◽  
Field Calculation ◽  
The Third ◽  
Scattering Field ◽  
Engineering Problems ◽  
Consistency Property ◽  
The Time Domain

The extrapolation of the electric field is studied theoretically both in frequency domain and time domain. Combining Gauss’s law with the approximation method in engineering, two new formulas for the scattering field calculation are derived from different logical ideas based on Stratton–Chu formula. The consistency property of the derived formulas is investigated, and the third formula for the scattering field calculation is further obtained. Finally, the time-domain extrapolation is discussed based on the formulas, followed by a simple numerical example. The results obtained are characterized by a simple form and intuitive physical meaning, and are helpful to calculate certain engineering problems.

scholarly journals Photodynamic and Photothermal Therapy of Hepatocellular Carcinoma

2021 ◽  
Vol 11 ◽  
Author(s):  
Zhe Fan ◽  
Chengjun Zhuang ◽  
Shuang Wang ◽  
Yewei Zhang
Keyword(s):  
Hepatocellular Carcinoma ◽  
Photodynamic Therapy ◽  
Photothermal Therapy ◽  
Early Stage ◽  
Medical Engineering ◽  
First Line ◽  
Recurrence Rates ◽  
Primary Liver Tumor ◽  
The Third ◽  
New Ideas

Hepatocellular carcinoma (HCC) is the most common primary liver tumor. It is ranked the sixth most common neoplasm and the third most common cause of cancer mortality. At present, the most common treatment for HCC is surgery, but the 5-year recurrence rates are still high. Patients with early stage HCC with few nodules can be treated with resection or radiofrequency ablation (RFA); while for multinodular HCC, transarterial chemoembolization (TACE) has been the first-line treatment. In recent years, based on medical engineering cooperation, nanotechnology has been increasingly applied to the treatment of cancer. Photodynamic therapy and photothermal therapy are effective for cancer. This paper summarizes the latest progress of photodynamic therapy and photothermal therapy for HCC, with the aim of providing new ideas for the treatment of HCC.

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