WSEAS TRANSACTIONS ON ADVANCES in ENGINEERING EDUCATION
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Published By World Scientific And Engineering Academy And Society (WSEAS)

1790-1979

Author(s):  
Felix A. Himmelstoss ◽  
Karl Edelmoser

The Corona pandemic has changed our way to teach, even our laboratory experiments. The exercises for the three-phase systems had to be transferred to the web. The virtual exercises are described and the results are shown. The pros and contras of this way to teach are discussed.


2021 ◽  
Vol 18 ◽  
pp. 175-191
Author(s):  
Dimitrios Christodoulou ◽  
Philotheos Lokkas ◽  
Ioannis Markou ◽  
Alexandros Droudakis ◽  
Ioannis Chouliaras ◽  
...  

Grouting includes a range of processes that involve the injection of wet or dry materials into the ground to provide improved engineering properties. Common aims are to increase strength or stiffness or to reduce permeability within the mass of ground treated. The simplest process in concept is the permeation of the pore spaces with a fluid grout which then sets, and provides the desired properties. Jet grouting employs erosion and mixing using high energy jets, to attack a wide-ranging set of soils and applications. This paper, mainly, addresses permeation grouting for the improvement of soils, in terms of strengthening or reduction of permeability, and compensation grouting for the displacement of structures during subsurface exploration. The historical evolution of these two grouting processes is described leading up to present-day practice. Reference is made to grouting materials, methods of injection, equipment, limitations and verification for each type of grouting. The grouts used to make permeation grouting are mainly suspensions and chemical solutions. The suspensions penetrate well into soils with granulometry up to coarse sand. On the contrary, the chemical solutions penetrate satisfactorily in finer formations up to fine sands or coarse sludges. Because some chemical solutions are toxic or generally harmful to the environment and humans, an effort has been made internationally in recent years to replace them with inorganic fine-grained suspensions.


2021 ◽  
Vol 18 ◽  
pp. 192-198
Author(s):  
Meili Dai

With the increasingly frequent international exchanges, English has become a common language for communication between countries. Under this research background, in order to correct students’ wrong English pronunciation, an intelligent correction system for students’ English pronunciation errors based on speech recognition technology is designed. In order to provide a relatively stable hardware correction platform for voice data information, the sensor equipment is optimized and combined with the processor and intelligent correction circuit. On this basis, the MLP (Multilayer Perceptron) error correction function is defined, with the help of the known recognition confusion calculation results, the actual input speech error is processed by gain mismatch, and the software execution environment of the system is built. Combined with the related hardware structure, the intelligent correction system of students’ English pronunciation error based on speech recognition technology is successfully applied, and the comparative experiment is designed the practical application value of the system is highlighted.


2021 ◽  
Vol 18 ◽  
pp. 169-174
Author(s):  
Balážová Pavla

The aim of this paper is to present experience with engineering education of Slovak and foreign students from various countries from Europe, Asia and Africa. The courses in English language are focused on terminologies of 20 different departments of Faculty of Civil Engineering Slovak University of Technology in Bratislava, Slovak Republic. The new ways of engineering education is a part of research realised at Faculty of Art, Comenius University in Bratislava as well. In the frame of the research the following aspects are investigated in practice: internationalization of teaching, teaching innovation and evaluation of the possible teaching improving. The details of teaching are presented and the proposals for research design are outlined. Complete evaluation of these experiments in practice will be published after collecting and processing all necessary data.


2021 ◽  
Vol 18 ◽  
pp. 160-168
Author(s):  
Aygun Garayeva ◽  
Fatima Guliyeva

We consider a third-order ordinary differential operator with summable coefficients. The absolute and uniform convergence of the orthogonal expansion of a function from the class in the eigenfunctionsof this operator is studied and the rate of uniform convergence of these expansions on is estimated


2021 ◽  
Vol 18 ◽  
pp. 156-159
Author(s):  
Esmira Tahirova ◽  
Sevinj Guliyeva ◽  
Arkinaz Rasulzada

The aim of our research is to explore the ways to ensure the active participation of every child in the educational process, regardless of inclusive learning abilities and educational needs. In order to achieve the set goal, the following tasks are planned to be performed: Analysis of gaps in educational opportunities of the children with disabilities and identification of the ways of solution; Investigation of the ways of provision of support by healthy students to the learning process by working together with the students with disabilities; In our research, we will try to find answers to the following questions. What steps are needed to be made for making learning accessible and comfortable and most importantly to formalize social and life skills? How important is it to change teaching methods for all children to develop and master the material effectively? What will help students to learn better and be more successful in their interactions in education?


2021 ◽  
Vol 18 ◽  
pp. 152-155
Author(s):  
Ahmed Ekashlan

Mutated corona virus (COVID – 19) pandemic waves attack has significant impact in the maritime sector, and disrupted the smooth functioning of various teaching activities. Following precautionary extra – ordinary measures to limit the spread of infections, on – line implementation to the IMO- STCW 2010 convention was achieved to convey knowledge and proficiency regardless of lecturer’s, candidate’s, and instructor’s capabilities and experience in technological competencies as regard to readiness, accessibility, and platform. The present work is practically based, that is containing enough theories to present adequate understanding of the conceptual relations and cognitive processes. The curricula is complaint with the mandatory minimum requirement for certification for electrical, electronic, and control engineering at the operational and management levels for both principles and practical knowledge for targeted engineering cadets. Barriers in implementing the complete requirements of the IMO- STCW 2010 online encompass: evaluating and assessment lecturer’s and cadet’s satisfaction level, insufficient teaching hours allocated, evaluating teaching syllabus and lecturer’s confidence, reaction and participation, poor or even limited direct communication between lecturers and cadets, difficulty adjusting learning style, technical difficulties faced by lecturers in online teaching and assessments


2021 ◽  
Vol 18 ◽  
pp. 148-151
Author(s):  
Jinqing Shen ◽  
Zhongxiao Li ◽  
Xiaodong Zhuang

Data dimension reduction is an important method to overcome dimension disaster and obtain as much valuable information as possible. Speech signal is a kind of non-stationary random signal with high redundancy, and proper dimension reduction methods are needed to extract and analyze the signal features efficiently in speech signal processing. Studies have shown that manifold structure exists in high-dimensional data. Manifold dimension reduction method aiming at discovering the intrinsic geometric structure of data may be more effective in dealing with practical problems. This paper studies a data dimension reduction method based on manifold learning and applies it to the analysis of vowel signals.


2021 ◽  
Vol 18 ◽  
pp. 135-147
Author(s):  
Pi-Sheng Deng

Technological development has engaged educational institutions in fierce global competition. To be competitive in meeting the changing needs of today’s student population, educational institutions find it imperative to prioritize student retention efforts and to develop strategies that interact and serve students more effectively in providing them more value and service. In this research we proposed a three-phase-six-stage adaptive data mining development life cycle, and we applied the affinity analysis to this methodology in identifying more than 400 association relationships with student retention, refining iteratively the association rule set down to less than 30 rules, and developing useful strategic implications regarding how the important factors were associated with a student’s decision. This set of implications and factors could then be integrated into the development of strategies for student retention


2021 ◽  
Vol 18 ◽  
pp. 96-113
Author(s):  
Philotheos Lokkas ◽  
Ioannis Chouliaras ◽  
Theodoros Chrisanidis ◽  
Dimitrios Christodoulou ◽  
Emmanouil Papadimitriou ◽  
...  

The behavior of soil either as a building material or as a load receiver is particularly important and presents a paramount significance in both infrastructure and building construction. Geotechnical engineering has shown a rapid development over the last fifty years and holds a prominent position in all scientific fields of engineers. This paper mainly aims at the historical background along with the progress made on Soil Engineering as an important branch of Surveyors, Civil and Mining Engineers, where, through an important citation of technical works and constructions over time, may be considered as a significant tool for teaching and education of students


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