This dataset contains images and segmentation maps for sevenhandwashing steps, six of which are p... more This dataset contains images and segmentation maps for sevenhandwashing steps, six of which are prescirbed WHO handwashing steps.This work is based on a sample handwashing video dataset uploadedby Kaggle userreal-timeAR (https://www.kaggle.com/realtimear) .Class-wise breakdown of samples---Step_1 : 8749Step_2 : 18725Step_3 : 7516Step_4 : 19926Step_5 : 18696Step_6 : 17274Step_7 : 16163------------------Total : 107049 images------------------
2018 IEEE 18th International Conference on Advanced Learning Technologies (ICALT), 2018
Tangible user interfaces offer a new medium for education in rural India, helped by its low barri... more Tangible user interfaces offer a new medium for education in rural India, helped by its low barrier for entry for the digitally illiterate. In this paper we discuss the design considerations & the pedagogical settings for a tangible environment to teach the skill of surveying optimal locations for toilets and soak pits. We also discuss findings from the pilot test of the technology with 10 women from rural India. This technology is intended as a pedagogical tool instead of being a full blown "serious game" so as to bring the focus on the conversations and discussion prompted by the technology, than on the technology itself.
In this world of rapidly evolving technology and technological artifacts, there is an urgent need... more In this world of rapidly evolving technology and technological artifacts, there is an urgent need to bridge the digital divide between those online and offline, especially in developing countries. In this paper, we propose a low-cost educational package for teaching robotics to secondary school students in rural India to motivate youth interest in learning STEAM subjects. As rural India lacks technologically trained teachers, the self paced learning approach and carefully designed program guides allow the teacher to be a facilitator even without prior technology experience. The children demonstrated enthusiasm and engagement in activities, successfully attaining the defined outcomes based upon the application of STEAM concepts. The workshop curriculum proved to be a valid approach to promote interest in STEAM subjects in rural schools of India.
DC motors are having wide range of application from household appliances to large industrial mach... more DC motors are having wide range of application from household appliances to large industrial machinery at various speed conditions. In this paper, speed control of a separately excited direct current (DC) motor under load conditions has been implemented using CHR tuning and LQR controllers. The Chien-Hrones-Reswick (CHR) is based on a Proportional Integral Derivative controller (PID) tuning and Linear Quadratic Regulator controller (LQR) is based on an optimal controller. Comparison of both the methods have been done based on transient response specifications. Simulations in MATLAB have shown that the performance of the DC motor has significantly improved quality response with the LQR method over the CHR method. It has also minimized deviation from the desired speed, with the LQR method. This can lead to significant improvement when implemented in applications viz. robotics, process control and cruise control.
DC motors are widely used in various industries because they cater to applications of high and lo... more DC motors are widely used in various industries because they cater to applications of high and low power and in both fixed and variable speed electric drives. This paper analyses the transient parameters of the speed of separately excited DC motors using the Linear Quadratic Regulator (LQR) method. The speed of the DC motor is analyzed by measuring the output. The LQR method has been applied on three different motors of different specifications. The speed of the three motors is compared on the basis of the transient specifications using the LQR method. Simulation of a motor in MATLAB has shown that the performance of a motor with a low power application has a significant and improved quality response with the LQR method. Properties such as minimized deviation in speed, easy design and cost reduction make it efficient for use in controlled and balanced systems. These properties enhance speed control of a DC motor by achieving the desired performance for the systems where different power ratings occur.
Inculcating principles of environmental stewardship among the children and youth is needed urgent... more Inculcating principles of environmental stewardship among the children and youth is needed urgently today for creating a sustainable future. This paper presents a model for promoting environment literacy in India using story telling based workshops while focusing on STEM education including computational thinking, robotics and maker skills. During the workshop, participants build a robotic diorama with digital animations and animatronics to tell their story. Our initial observations from pilot studies conducted in 2019 in six rural and semi-urban schools in India showed us that the children were deeply engaged and enthusiastic throughout the workshop making the entire learning experience a very meaningful and joyful one for all.
The bid to transform education with the inclusion of 21st-century skills in the school system lay... more The bid to transform education with the inclusion of 21st-century skills in the school system lays an emphasis on hands-on project-based learning and tinkering. Often such learning activities involve teaching children creation of artifacts that extend beyond lending personal meaning to themselves, as objects that are designed for use by others. It is imperative that making such objects is motivated by an empathetic understanding of the needs of the eventual users of these objects. This paper discusses the conduct of a workshop that teaches user-centered design principles to eighth graders by engaging in maker activities aiming to develop such an understanding of their users in children. The workshop engages the children in dialogue with users and teaches the children to create objects that fulfill the users' expressed needs. Furthermore, to engage them in collaborative-learning, the children were guided to create a boat by up-cycling waste plastic bottles. They then rowed it out in a pool to test it for its functionality. The workshop has led to an increased sense of general self-efficacy in the children that was measured by the conducted pre-workshop and post-workshop surveys.
–In rural and tribal communities, producing handicrafts act as a source of supplementary income a... more –In rural and tribal communities, producing handicrafts act as a source of supplementary income and a means to preserve the uniqueness of their arts and craft forms. Developing skills requires practise and knowledge of native techniques. In activities such as painting, skill in application of pressure and tilt of the brush are very important parameters that contribute to creating beautiful artwork. Technology can play a vital role in aiding to preserve traditional techniques and skills. In this paper we discuss the design of a software application that contains a skill database that stores expert brush stroke techniques and help the novice learn to apply the brush strokes by providing feedback based on the expert stroke. This computerised training solution is scalable, portable and cost effective.
This dataset contains images and segmentation maps for sevenhandwashing steps, six of which are p... more This dataset contains images and segmentation maps for sevenhandwashing steps, six of which are prescirbed WHO handwashing steps.This work is based on a sample handwashing video dataset uploadedby Kaggle userreal-timeAR (https://www.kaggle.com/realtimear) .Class-wise breakdown of samples---Step_1 : 8749Step_2 : 18725Step_3 : 7516Step_4 : 19926Step_5 : 18696Step_6 : 17274Step_7 : 16163------------------Total : 107049 images------------------
2018 IEEE 18th International Conference on Advanced Learning Technologies (ICALT), 2018
Tangible user interfaces offer a new medium for education in rural India, helped by its low barri... more Tangible user interfaces offer a new medium for education in rural India, helped by its low barrier for entry for the digitally illiterate. In this paper we discuss the design considerations & the pedagogical settings for a tangible environment to teach the skill of surveying optimal locations for toilets and soak pits. We also discuss findings from the pilot test of the technology with 10 women from rural India. This technology is intended as a pedagogical tool instead of being a full blown "serious game" so as to bring the focus on the conversations and discussion prompted by the technology, than on the technology itself.
In this world of rapidly evolving technology and technological artifacts, there is an urgent need... more In this world of rapidly evolving technology and technological artifacts, there is an urgent need to bridge the digital divide between those online and offline, especially in developing countries. In this paper, we propose a low-cost educational package for teaching robotics to secondary school students in rural India to motivate youth interest in learning STEAM subjects. As rural India lacks technologically trained teachers, the self paced learning approach and carefully designed program guides allow the teacher to be a facilitator even without prior technology experience. The children demonstrated enthusiasm and engagement in activities, successfully attaining the defined outcomes based upon the application of STEAM concepts. The workshop curriculum proved to be a valid approach to promote interest in STEAM subjects in rural schools of India.
DC motors are having wide range of application from household appliances to large industrial mach... more DC motors are having wide range of application from household appliances to large industrial machinery at various speed conditions. In this paper, speed control of a separately excited direct current (DC) motor under load conditions has been implemented using CHR tuning and LQR controllers. The Chien-Hrones-Reswick (CHR) is based on a Proportional Integral Derivative controller (PID) tuning and Linear Quadratic Regulator controller (LQR) is based on an optimal controller. Comparison of both the methods have been done based on transient response specifications. Simulations in MATLAB have shown that the performance of the DC motor has significantly improved quality response with the LQR method over the CHR method. It has also minimized deviation from the desired speed, with the LQR method. This can lead to significant improvement when implemented in applications viz. robotics, process control and cruise control.
DC motors are widely used in various industries because they cater to applications of high and lo... more DC motors are widely used in various industries because they cater to applications of high and low power and in both fixed and variable speed electric drives. This paper analyses the transient parameters of the speed of separately excited DC motors using the Linear Quadratic Regulator (LQR) method. The speed of the DC motor is analyzed by measuring the output. The LQR method has been applied on three different motors of different specifications. The speed of the three motors is compared on the basis of the transient specifications using the LQR method. Simulation of a motor in MATLAB has shown that the performance of a motor with a low power application has a significant and improved quality response with the LQR method. Properties such as minimized deviation in speed, easy design and cost reduction make it efficient for use in controlled and balanced systems. These properties enhance speed control of a DC motor by achieving the desired performance for the systems where different power ratings occur.
Inculcating principles of environmental stewardship among the children and youth is needed urgent... more Inculcating principles of environmental stewardship among the children and youth is needed urgently today for creating a sustainable future. This paper presents a model for promoting environment literacy in India using story telling based workshops while focusing on STEM education including computational thinking, robotics and maker skills. During the workshop, participants build a robotic diorama with digital animations and animatronics to tell their story. Our initial observations from pilot studies conducted in 2019 in six rural and semi-urban schools in India showed us that the children were deeply engaged and enthusiastic throughout the workshop making the entire learning experience a very meaningful and joyful one for all.
The bid to transform education with the inclusion of 21st-century skills in the school system lay... more The bid to transform education with the inclusion of 21st-century skills in the school system lays an emphasis on hands-on project-based learning and tinkering. Often such learning activities involve teaching children creation of artifacts that extend beyond lending personal meaning to themselves, as objects that are designed for use by others. It is imperative that making such objects is motivated by an empathetic understanding of the needs of the eventual users of these objects. This paper discusses the conduct of a workshop that teaches user-centered design principles to eighth graders by engaging in maker activities aiming to develop such an understanding of their users in children. The workshop engages the children in dialogue with users and teaches the children to create objects that fulfill the users' expressed needs. Furthermore, to engage them in collaborative-learning, the children were guided to create a boat by up-cycling waste plastic bottles. They then rowed it out in a pool to test it for its functionality. The workshop has led to an increased sense of general self-efficacy in the children that was measured by the conducted pre-workshop and post-workshop surveys.
–In rural and tribal communities, producing handicrafts act as a source of supplementary income a... more –In rural and tribal communities, producing handicrafts act as a source of supplementary income and a means to preserve the uniqueness of their arts and craft forms. Developing skills requires practise and knowledge of native techniques. In activities such as painting, skill in application of pressure and tilt of the brush are very important parameters that contribute to creating beautiful artwork. Technology can play a vital role in aiding to preserve traditional techniques and skills. In this paper we discuss the design of a software application that contains a skill database that stores expert brush stroke techniques and help the novice learn to apply the brush strokes by providing feedback based on the expert stroke. This computerised training solution is scalable, portable and cost effective.
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Papers by Bhavani Rao R
animatronics to tell their story. Our initial observations from pilot studies conducted in 2019 in six rural and semi-urban schools in India showed us that the children were deeply engaged and enthusiastic throughout the workshop making the entire learning experience a very meaningful and joyful one for all.
animatronics to tell their story. Our initial observations from pilot studies conducted in 2019 in six rural and semi-urban schools in India showed us that the children were deeply engaged and enthusiastic throughout the workshop making the entire learning experience a very meaningful and joyful one for all.