scholarly journals Addition to “Practical Training in Simple Hückel Theory: Matrix Diagonalization via Tridiagonalization, Cyclobutadiene, and Visualization of Molecular Orbitals”

2020 ◽  
Vol 97 (8) ◽  
pp. 2373-2374
Author(s):  
Shin-ichi Nagaoka ◽  
Yoshinori Yamasaki ◽  
Hiroyuki Teramae ◽  
Umpei Nagashima ◽  
Tatsunobu Kokubo
1999 ◽  
Vol 10 (07) ◽  
pp. 1177-1192 ◽  
Author(s):  
JORGE RICARDO LETELIER

A method is presented that allows the computation of the forces acting on the atoms in a molecule along each of the symmetry nuclear displacements coordinates. The method works within the Extended Hückel formalism and makes use of the standard output of a charge-iterated calculation. In this work, examples are given of the different contributions to the total force, arising from the populated molecular orbitals, that act on the atoms in several diatomic molecules and the shape of the vibrational potential is analyzed. Also, the distortions (Peierls) that take place in a linear triatomic system of hydrogen atoms is also examined under this viewpoint.


Author(s):  
S. G. Grigoriev ◽  
M. V. Kurnosenko ◽  
A. M. Kostyuk

The article discusses possible forms of educational STEM projects in the field of electronics and device control using Arduino controllers. As you know, the implementation of such STEM projects can be carried out not only using various electronic constructors, but also using virtual modeling environments. The knowledge obtained during modeling in virtual environments makes it possible to increase the efficiency of face-to-face practical training with a real constructor, and to improve the quality of students’ knowledge. The use of virtual modeling environments in combination with the use of real constructors provides links between distance and full-time learning. A real constructors can be used simultaneously by both the teacher and the student, jointly practicing the features of solving practical problems. The article provides examples of using a virtual environment for preliminary prototyping of circuits available in the documentation for electronic constructors, to familiarize students with the basics of designing and assembling electronic circuits using the surface mounting method and on a breadboard, as well as programming controllers on the Arduino platform that control electronic devices. This approach allows students to accelerate the assimilation of various interdisciplinary knowledge in the field of natural sciences using STEM design.


Author(s):  
Lubica Miková

Urgency of the research. Mechatronics products become more sophisticated and complicated. Mechatronic engineers should be prepared for this complex design process. Practical experimental model helps improve educational process as preparing for practice. Target setting. Miniaturized model of the lift suitable for practical training on subjects focused to microcontrollers, sen-sors, actuators etc. Students have possibility to make practice on laboratory exercises, where they can verify theoretical knowledge obtained on lectures. The arrangement of the model has modular character, because of possibility to rearrange or adding of new function into model. The aim was to create minimized model of real lift with all functions and systems. Actual scientific researches and issues analysis. Many universities are oriented only to finished robotic kits and do not support creativity of students. Open access and open structure model missing in this field. There is a need for fast prototyping model, which allows the creation of new design of product. Uninvestigated parts of general matters defining. The question of the design of printed circuit board are uninvestigated, because they need more time than allows normal exercises. The research objective. The main aim of educational process is to educate engineers with basic knowledge, skills and handicraft. Practical models help as support devices for fulfil of this aim. All mechatronic students can practice a training on these practical models. They become as more skilled and well-oriented engineers.. The statement of basic materials. Construction consist of upper and lower base plate connected with four pillars used as linear guide for moving of lift cage. Lower base plate includes base microcontrollers boards, resistor network, power transis-tor array board, power supply terminals, relay modules, PWM module and signals terminals. Upper base plate consist of DC motor with gearing and screw mechanism for moving the lift cage. Conclusions. The model enables supports the creativity of the students. The starting point of the using of the model can be without any wired connections. Students should connect every part and try functionality of every function. The students receive the defined several problems and they have to analyze it and make any proposal for solution of defined problems.


2020 ◽  
Vol 1 (8(77)) ◽  
pp. 23-32
Author(s):  
S. Radeva ◽  
L. Georgieva

The training of midwives in recent years has been consistent with the development of technology, the growing demands of the field of obstetric services, from patients and legislative changes, but, nevertheless, the emphasis has not yet been placed on mastering professional skills and communication. Clinical practice is a form of training associated with high responsibility, good theoretical training and mastered skills and competencies during training sessions. During clinical practice, students should master a number of practical skills, they should be able to develop the necessary confidence and the necessary professional self-esteem. Proper and appropriate organization of clinical practice contributes to the creation of positive motivation for learning, the development of cognitive interests that were once formed, become active internal factors for improving the quality, effectiveness and selfesteem in relation to educational activities. The activities of teachers and mentors should be aimed at working more closely with students during clinical practice, so that they can prepare well and fully independently during practical training to perform the specified skills. Motivation is important for creating a professional orientation that is passed on by practitioners and is a prerequisite for choosing a future workplace for students. Mentors from training bases are people who can guide young professionals to train them, educate them on professional responsibility, and teach them how to communicate with patients and colleagues. Students need daily incentives for active, purposeful and constant efforts for all types of activities, so that they can gain the necessary confidence and be ready for the requirements of their chosen profession.


2018 ◽  
Vol 28 (5) ◽  
pp. 1557-1562
Author(s):  
Visar Ademi

In today’s global competitive arena the term “knowledge economy” is no mere slogan. It points to the very real fact that economic activities are increasingly knowledge intensive and that in this globalized world, success will come to those that are able to generate and harness knowledge in order to stay ahead of the pack. Research shows that in economies that do not have sufficient infrastructure, natural resources or may be designed as high cost base locations, comparative advantage has shifted to knowledge-based activities that cannot be transferred around the world without a significant cost. High knowledge and skills based economies will most likely be able to attract and retain investments in industries with a strong future. It is no secret that good education lies at the heart of economic growth and development. At the same time, improving the quality and relevance of education is enormously difficult not least because there is no one single policy measure that will do so effectively.Macedonia is not exclusion to this fact. The Macedonia’s employers and employees face a huge talent management dilemma. Analyses by all relevant institutions (World Bank, NGOs) and interviews with multiple representatives from the private sector companies indicate that while the labor pool is growing (supply side), it does not provide the skills needed by employers (demand side) so, that they could be competitive and further grow in today’s market. Employers are nearly unified in their criticism of an education system that produces graduates with limited practical experience and no soft skills transferable to the workplace. This is largely due to a lack of experiential education, competency based curricula, pragmatic guidance, which fails to meet the needs of the business community. The burden falls most often on employers to provide practical training, usually on the job. While in-company training is good practice, the scale of the skill gap requires a cost and internal training capability that many enterprises cannot afford, creating a disincentive for businesses to hire new employees.The dilemma has impacted job seekers (official unemployment in Macedonia is around 28% as of December 2017) and contributes to lower overall economic growth. It is especially problematic for micro and small enterprises (MSEs), which make up a large proportion of employment in Macedonia. MSE size and limited capacity makes their employees skills, experience and multitasking capabilities that much more critical for growth. Additionally, MSEs often lack the resources necessary to effectively train and maximize the productivity of their staff. As a result, sustained employment growth within Macedonia must include the development of a pipeline of skilled employees for microenterprises, including bolstering the capacity of small businesses to organize and train their workers. On the other side, the formal education institution dislike they way the private sector manages their employees. According to many of them, this is due to the fact that companies believe that their performance in the market is not directly linked with the human capital performance. In addition, education holds to the belief that private sector companies are not engaged enough in creating the next pool of talents in Macedonia. When they are invited to participate in the classrooms as expert of guest speaker, hire or engage students they show little interest. To conclude, the education institution believes that private sector companies in Macedonia consider the investment in human capital as a cost and not an investment.


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