New Educational Methodology to Study the Involute Tooth Profile

2018 ◽  
pp. 29-37 ◽  
Author(s):  
Olga Egorova ◽  
Gennady Timofeev ◽  
Georgy Shashurin
Keyword(s):  
Tooth Profile ◽  
Educational Methodology

МЕЖДИСЦИПЛИНАРНОСТЬ В ПОДГОТОВКЕ КОНФЛИКТОЛОГОВ: СОСТОЯНИЕ И ПЕРСПЕКТИВЫ

2020 ◽  
Vol 15 (1) ◽  
pp. 13
Author(s):  
А. И. Стребков ◽  
А. И. Мусаев
Keyword(s):  
Conflict Resolution ◽  
Comparative Analysis ◽  
Subject Matter ◽  
Academic Program ◽  
Academic Programs ◽  
Full Time ◽  
The Us ◽  
Promotional Materials ◽  
Russian Universities ◽  
Educational Methodology

The present article concerns with the modern state of things of the conflict resolution specialists’ training in the US universities. The analysis is based on the informational and promotional materials which were picked up from the 11 American universities’ websites. The aim of the analysis was the examination of the four sections, which are: the orientation of the academic program, the content of the program or the scope of the skills, the main methodology of the academic program and the educational technologies. Together with the analysis of the US universities’ academic programs the article provides the comparative analysis of these programs with the Russian academic programs. On the back of this comparative analysis the authors come to the comprehensive conclusion according to which the specialists’ training in the field of the conflict resolution and peacebuilding in the US does not have significant differences from Russian ones and is carried out within one international academic trend in regard to its main features which are: the orientation, content, educational methodology and technologies. The key distinction of the Russian training from the American one is that the Russian academic tradition does have the core subject matter around which the whole academic program is being developed and which is the conflict. This subject matter is being taken in its entirety and the conflict resolution is considered as the closing stage of the conflict studies specialists’ training whereas the academic programs of the US universities embrace the conflict resolution as the subject matter of the academic training and therefores leaves beyond the scope of the training both the theory of the conflict and the forms practice of its manifestation in a number of the programs. The letter is peculiar to both short-term academic programs and the full-time two-year academic programs as it is accepted in the educational space of the Russian Federation. Furthermore, the authors of the article make up the conclusion of the coinciding major educational methodology which guides the academic programs of the American and Russian universities and which is developed on the principles of the interdisciplinarity.

scholarly journals Why a Virtual Assistant for Moral Enhancement When We Could have a Socrates?

2021 ◽  
Vol 27 (4) ◽  
Author(s):  
Francisco Lara
Keyword(s):  
Artificial Intelligence ◽  
Virtual Reality ◽  
New Technologies ◽  
Personal Autonomy ◽  
Moral Enhancement ◽  
Moral Decisions ◽  
Educational Methodology ◽  
Better Than

AbstractCan Artificial Intelligence (AI) be more effective than human instruction for the moral enhancement of people? The author argues that it only would be if the use of this technology were aimed at increasing the individual's capacity to reflectively decide for themselves, rather than at directly influencing behaviour. To support this, it is shown how a disregard for personal autonomy, in particular, invalidates the main proposals for applying new technologies, both biomedical and AI-based, to moral enhancement. As an alternative to these proposals, this article proposes a virtual assistant that, through dialogue, neutrality and virtual reality technologies, can teach users to make better moral decisions on their own. The author concludes that, as long as certain precautions are taken in its design, such an assistant could do this better than a human instructor adopting the same educational methodology.

Modeling of surface roughness in a novel magnetorheological gear profile finishing process

2020 ◽  
pp. 095440622097826
Author(s):  
Ravi Datt Yadav ◽  
Anant Kumar Singh ◽  
Kunal Arora
Keyword(s):  
Surface Roughness ◽  
Gear Tooth ◽  
Surface Characteristics ◽  
Spur Gear ◽  
Tooth Profile ◽  
Tooth Surface ◽  
Magnetic Flux Density ◽  
Element Analysis ◽  
Finishing Process ◽  
Gear Profile

Fine finishing of spur gears reduces the vibrations and noise and upsurges the service life of two mating gears. A new magnetorheological gear profile finishing (MRGPF) process is utilized for the fine finishing of spur gear teeth profile surfaces. In the present study, the development of a theoretical mathematical model for the prediction of change in surface roughness during the MRGPF process is done. The present MRGPF is a controllable process with the magnitude of the magnetic field, therefore, the effect of magnetic flux density (MFD) on the gear tooth profile has been analyzed using an analytical approach. Theoretically calculated MFD is validated experimentally and with the finite element analysis. To understand the finishing process mechanism, the different forces acting on the gear surface has been investigated. For the validation of the present roughness model, three sets of finishing cycle experimentations have been performed on the spur gear profile by the MRGPF process. The surface roughness of the spur gear tooth surface after experimentation was measured using Mitutoyo SJ-400 surftest and is equated with the values of theoretically calculated surface roughness. The results show the close agreement which ranges from −7.69% to 2.85% for the same number of finishing cycles. To study the surface characteristics of the finished spur gear tooth profile surface, scanning electron microscopy is used. The present developed theoretical model for surface roughness during the MRGPF process predicts the finishing performance with cycle time, improvement in the surface quality, and functional application of the gears.

scholarly journals Computer-Aided Design of High-Contact-Ratio Gears for Minimum Dynamic Load and Stress

1993 ◽  
Vol 115 (1) ◽  
pp. 171-178 ◽  
Author(s):  
Hsiang Hsi Lin ◽  
Chinwai Lee ◽  
F. B. Oswald ◽  
D. P. Townsend
Keyword(s):  
Dynamic Load ◽  
Computer Aided Design ◽  
Numerical Procedure ◽  
Tooth Profile ◽  
Lower Sensitivity ◽  
Contact Ratio ◽  
Profile Modification ◽  
Parabolic Profile ◽  
Profile Design ◽  
Optimum Profile

This paper presents a numerical procedure for minimizing dynamic effects on high-contact-ratio gears by modification of the tooth profile. The paper examines and compares both linear and parabolic tooth profile modifications of high-contact-ratio gears under various loading conditions. The effects of the total amount of modification and the length of the modification zone were systematically studied at various loads and speeds to find the optimum profile design for minimizing the dynamic load and the tooth bending stress. Parabolic profile modification is preferred over linear profile modification for high-contact-ratio gears because of its lower sensitivity to manufacturing errors. For parabolic modification a greater amount of modification at the tooth tip and a longer modification zone are required. Design charts are presented for high-contact-ratio gears with various profile modifications operating under a range of loads. A procedure is illustrated for using the charts to find the optimum profile design.

The Research on Tooth Profile Total Deviation Measuring Method Based on Coordination Measuring Machine

2012 ◽  
Vol 184-185 ◽  
pp. 789-792
Author(s):  
Bing Li ◽  
Yu Lan Wei ◽  
Meng Dan Jin ◽  
Ying Ying Fan
Keyword(s):  
Mathematical Model ◽  
Data Processing ◽  
High Precision ◽  
Gear Tooth ◽  
Measuring Method ◽  
Tooth Profile ◽  
Cylindrical Gears ◽  
Total Deviation ◽  
Measuring Machine

Put forward a method that use scatter points which got in different places to measure the involution cylindrical gears, give a mathematical model that use the discrete points to sure the total deviation of gear tooth profile. The experience results show that this way is of high precision in measurement points, measurement an error data processing less intervention, etc.

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