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  • Vol 14 No 3 (2021)


Published :   October, 2021



Articles



Comparative study of practical teaching and learning methods: higher education.

Neptali Zegarra Salazar, Julio Raúl Cantera Rios, Ilich Ivan Pumacayo Palomino, Francisco Manuel Hilario Falcon

81-89

Abstract :


The level of higher education has been undergoing changes where there has been an increase in the difficulty of the work of teachers and university students, therefore, they opt for strategies that teachers develop to be able to teach and perform learning techniques that will allow them to solve real problems: Practical teaching methods: (a) Didactic strategies applied in the formation of competencies, (b) Criteria for conceptualization, classification, selection and characterization of teaching methods. Practical learning methods: (i) Competency-based higher education teaching-learning model, (ii) Learning strategies in higher education. In synthesis, the didactic strategies applied in the formation of competencies is a process that will encourage students and university teachers to be able to use learning tools and techniques to achieve their particular objectives. This study can be improved by increasing variables and obtaining more precise results based on methodological techniques to improve teaching and academic learning.
Keywords: Learning method, Teaching method, Higher education, Higher education strategies





Design and Simulation of a Service Robot for Covid-19 Isolation Wards with Autonomous Navigation

Lalit Duseja, Yash Deshmukh, Shantanu Karmuse, Dr. S. S. Ohol

90-97

Abstract :


The robots that are used to carry out the daily repetitive tasks in any type of environments are service robots. These robots have a great potential to eliminate human intervention and reduce contact in order to decrease the spread of virus. Service robots are of great importance when the human society is hit with a situation of pandemic as they can help in serving the patients in and infectious environment and isolating them from the surroundings. Such kind of a service robot that would serve infected patients in isolation wards is designed & simulated by taking in the consideration the requirements. The dimensions of robot such as to optimize workspace requirements and the simulation of position and task of supplying the deliverables to patients from buffer area to isolation area are presented. The designed robot can successfully deliver medicines, food etc.to the patients without any contact between doctors, nurses or patients by using an on boarded Radio Frequency Identification system. The robot is well equipped with the sanitization mechanism to disinfect itself.
Keywords: Covid-19, Service Robot, Optimized Design, Autonomous Robot, Dijkstra’s algorithm, MATLAB, RFID.





Performance Analysis of Helical Compression spring And Banana or C Shaped Coil Spring Under Various Loading Conditions.

Pratiksha P. Bansode and Avinash Badadhe

98-102

Abstract :


Suspension system is one of the major and indispensable subsystems for land vehicles and has functions of providing better road holding, handling, and ride comfort. There are many suspension system types used for automobiles, and MacPherson strut suspension is one of the most widely used suspension system type due to its favorable features like simplicity, low cost, and high performance. However, there exists a drawback of this suspension type; since the coil springs have no ability to absorb lateral forces, undesired dry friction effects on the damper may degrade the ride comfort. As remedy to this drawback, the most popular and contemporary application is the use of coil spring forms which are called side load springs.It is observed that, the vehicle drifts towards one side due to high weight of suspension system. This problem can be solved by implementation of banana-C shaped coil spring. A banana,C-shaped coil spring is designed in such a way that it, when fitted correctly, exerts an opposing force compensating for the aforementioned side load pressure. This creates a balance and leads to the best possible working conditions for the shock absorber, ensuring a longer lifetime. Creo software was utilized to design the helical compression spring. The static analysis using finite element method has been done in order to find out the detailed load vs. defection of the helical compression spring and banana-shaped coilspring.
Keywords: MacPherson Strut Suspension, Side Load Spring





Sizing and Simulation of Powertrain of Three-Wheeler Electric Vehicle

Omkar Tade and Jyoti Kale

103-108

Abstract :


This research paper presents the study of designing, modelling and validating the results of simulation of powertrain of 3- wheeler electric vehicle with literature results. According to force and torque requirement at wheels, required power rating of motor is calculated. Indian driving cycle is used to calculate energy consumption by vehicle. Battery chemistry and sizing is selected according to energy requirement. According to requirement of power and constraints, type of motor is selected along with gear reduction calculation to achieve required torque and acceleration. For precise control of motor speed because of road profiles and traffic conditions control strategy is designed. All these subsystems are modelled on simulation platform and comparison with theoretical calculations will be carried out. The objective of this paper is to design, model and optimize the performance of electric vehicle in terms of powertrain and try to match the performance parameters with conventional IC-engine vehicle. This paper comprises of design in gelectric subsystems, creating control strategies for better performance and model-based simulation to check the performance
Keywords: Electric Vehicle, Motor Selection, Powertrain, Retrofitment, Simulation





Design Analysis and performance evaluation of 3D printed baffle path diverters in hydraulic noise suppressor

Sumit Jadhav and D. M. Mate

109-117

Abstract :


The pump in the hydraulic systems is the main source of noise in form of vibrations or pulsations while noise reduction is an important part of pump design still some ripples are produced by the pump termed as pulsations. Pulsations result in line vibrations which cause additional noise. How much ripple the pump produces cannot be changed, so other ways to an average of 50 dB(A) to 60 dB(A) level of noise is often considered to safe, although the noise levels resulting due to pulsations are seen to be in ranges as high as 130 t 0 150 dB(A) that result in hose and piping failures and also results in damage to components like seals and valves. Through the introduction of a compressible membrane in the path with additional baffles for muffling of the noise the proposed solution is in the form of hydraulic noise reducer that incorporates both the compressible membrane as well as the baffle path diverter. Objective of paper is carried out the performance evaluation of the hydraulic noise reducer with elastomer membrane for noise reduction mechanism in conjunction to baffle type path diverters to even out the fluid pulsations or ripple to minimal without much pressure drop across the device to achieve minim; pumping losses. The paper discusses the performance evaluation of the diverter. The has been tested to determine mass flow rate and pressure drop. Experimental has been manufactured and test has been conducted to evaluate reduction in noiselevelinwithandwithoutthe3-dprintedbaffle arrangement and comparison has been carried out.
Keywords: hydraulic noise reducer, baffle path diverter





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