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By Fadil Iqbal
The podcast currently has 38 episodes available.
Sahitha Karapitiya was selected to present his work at the American Society of Agricultural and Biological Engineers (ASABE) for their Annual International Meeting in 2023. He is the only participant from Sri Lanka. He received his undergraduate degree in Agricultural and Biosystems Engineering from the Faculty of Agriculture at the University of Peradeniya. The title of his research is "Simulation of the Temperature Profile of Coffee Beans Roasted Under Far-Infrared Radiation" done under the supervision of Professor K. S. P. Amaratunga (Sanath Amaratunga).
If you want to help Sahitha or get in touch with him:
Website sahitha.super.site
Email: [email protected]
Facebook Sahitha Karapitiya
Linkedin Sahitha Karapitiya
00:00 About Sahitha
01:24 Sahitha's story
04:07 What were your dreams?
06:48 Entering Faculty of Agriculture at Peradeniya
11:25 What is the potential of Agriculture faculty
15:02 Versatile degree programs
16:22 About Sahitha's research
19:46 Model development
22:26 Experimental Setup
25:15 About ASABE
26:35 Prof. Sanath Amaratunga
28:45 Side business
31:23 Time management
37:41 Plans for the future
Ayodhya Sovis Wickramasooriya is doing her Post Graduuate studies in Agricultural economics at the University of Goettingen, Germany. She is a graduate from the Wayamba University of Sri Lanka and she completed her bachelors in Agriculture Business Management.
Agricultural economics is a branch of economics that focuses on the study of agricultural production, consumption, and distribution of goods and services related to agriculture. The field of agricultural economics is concerned with understanding the complex interactions between farmers, consumers, policymakers, and other stakeholders in the agricultural sector.
00:00 About Ayodhya
03:49 Potential of Agriculture
04:27 About International Agriculture
05:55 Economics in Agriculture
13:10 Undergraduate research
16:24 Agriculture in the North
17:55 Banning of chemical fertilizers
20:29 Organic Farming
22:13 Sustainable Agriculture
26:23 New technologies
27:24 Will Sri Lanka continue with agriculture
31:52 Challenges of learning economics
32:53 Future plans
I invited Kethmi Hettige to talk about the Z-score. For those who did A/Ls in Sri Lanka - this is a life deciding equation. Kethmi received her Bachelors in Industrial Statistics and Mathematical Finance from the Faculty of Science, University of Colombo. She is currently doing her PhD in Singapore.
00:00 About Z-score
00:59 Origins of the equation
01:52 Statistical measure
04:30 Mean,SD can be subjective
05:33 Why use it for A/Ls?
06:46 How to calculate it?
10:35 Problem with 2011 A/Ls
11:49 Bell curves
14:03 Biggest assumption with Z-score
16:09 Is it a good method?
20:22 Representative samples
21:35 What determines cutoff marks?
රසායනික බන්ධන විවිධ පරිමාණ වලින් - Computational ව්යාපෘතියක් කරමු
Let's do a computational chemistry project using OpenMM (39:42)
How do chemists understand a chemical bond? Molecular orbital theory helps us understand this.
If you haven't watched the previous videos you can check it out here:
1. Quantum Vs Classical mechanics - https://youtu.be/EsRlDKCi2EM
2. What is a chemical bond? https://youtu.be/oERFHqewf_A
Many thanks to Dulitha Prasanna for joining the podcast to talk about Quantum Mechanics.
00:00 Mathematics of molecular orbital theory
03:39 Molecular orbital diagrams
05:09 Contribution of each orbitals
06:46 Intro to GAMESS (Practical example)
09:42 Input file (for Nitrogen)
18:30 Visualizing molecular orbitals
22:24 Our understanding of bonding
23:18 Calculations and output file
25:41 Anti-bonding orbitals
27:40 Benzene rings
29:02 Dipeptide hydrolysis
30:51 Computational range/length
33:31 Classical mechanics
36:31 Experiments Vs Simulations
39:06 Course-grained, mesoscale
39:42 OpenMM Python package
45:30 Interaction in solvent box
47:11 Using super computing clusters
49:43 Future projects (Fundraiser)
This is the second video about Quantum Mechanics. We will be talking about chemical bonding - what is the physical understanding of a chemical bond? If you haven't watched the first video you can check it out here: Quantum Vs Classical mechanics - https://youtu.be/EsRlDKCi2EM
Many thanks to Dulitha Prasanna for joining the podcast to talk about Quantum Mechanics. Stay tuned for more videos.
00:00 Second video
01:36 Hatree-Fock Theory
03:06 Joint probability
10:10 Wave functions as Gaussian functions
15:56 Different molecular scales
16:31 Explanation of bonding
17:59 Paper: Physical nature of chemical bond
23:00 Molecular orbital theory
Many thanks to Dulitha Prasanna for joining the podcast to talk about Quantum Mechanics. Stay tuned for more videos.
00:00 Our definition of "Quantum"
01:01 Dulitha's story
04:24 Classical Vs Quantum Mechanics
06:31 Newton's Vs Coulomb's law
07:39 Newton's law has its problems
09:29 Problems with Rutherford's theory
13:20 Need of Quantum theory
21:23 Wavefunctions
30:59 Density
37:50 Is electron cloud true?
39:42 Computational Quantum Chemistry
40:45 From one electron to two
Chaturanga Wengappuliarachchi did Biological Sciences for his A/Ls and decided to go to the Open University of Sri Lanka (OUSL).He completed the Bachelor of Science Honours Degree in Physics and conducted research in the following topic: “PVA/(2-Propanol) based bee-honey (core) and povidone-iodine (sheath) coaxial electrospun beads on string nanofibrous scaffold for controlled drug release" at the research labs of OUSL and NIFS (National Institute of Fundamental Studies). He will be starting his PhD at Virginia Tech (USA) in the Physics Department.
The purpose of this podcast was to give students the idea that they can re-invent themselves into different fields without sticking to the decisions they made before.
You can connect with him on LinkedIn: https://www.linkedin.com/in/chaturanga-wengappuliarachchi-7563681a1/
01:28 Hoping to do Medicine
05:22 Curiosity driven
08:56 Deciding on Open University
11:29 Open University Education system
18:03 Mathematics for Biologists
22:12 Biologists think differently
26:36 Undergraduate research
32:27 Nano fibers vs particles
37:32 Research facilities in OUSL
41:53 Favourite Physics areas
47:26 History of Science
51:34 Recommended books and Channels
59:56 Time to read books
1:04:26 Future plans
Many thanks to Indrajith for accepting my invitation again. Here we wanted to talk about the advantages of using LinkedIn to make connections and decide where your next career should be.
00:39 LinkedIn with other social media apps
02:29 Benefits of making connections
09:25 What makes you stand out
11:00 Building trust and accountability
13:48 How to present yourself?
17:06 Content creation on LinkedIn
18:27 Profile picture is necessary
19:57 Header
24:39 Contact information
26:00 Personal branding
27:42 LinkedIn top voices
29:22 Posting in Sinhala or English?
31:23 Personal stories
33:54 Write keywords first
35:22 Experiences and referrels
38:21 Alumni Groups
39:58 Connection requests
48:51 Search your Degree
51:06 Informational Interviews
54:11 Messaging
56:13 Talk about your dreams
Hasitha Eranda is a Theoretical Physicist at UC Irvine, California. He did his bachelors at the Department of Physics in the University of Colombo. He is currently working on searching for relic galaxy candidates in N-body cosmological simulations.
You can find more details about his work from this paper: https://arxiv.org/pdf/2005.09720.pdf
00:00 About Hasitha
02:01 Final year project in UOC
03:07 PhD thesis - Cosmological simulations
05:07 How to be a Theoretical Physicist?
09:09 Thought experiments
12:30 Astronomy Vs Astro-Physics
15:59 Cosmology
18:19 Problems with Science
19:10 importance of LIGO
19:52 About Black Holes
21:58 Problem with models
25:31 Gravity models
32:03 Problems with model fitting
35:36 Quantum gravity
41:06 Science is political
42:01 Numerical simulations
45:50 Big Bang Vs Inflation theory
53:38 Same data, different theories
Chalinda Abeykoon is the Managing Partner for nVentures, an early-stage VC fund focusing on fintech startups, licensed under the Monetary Authority of Singapore. He has been working with startups for almost 15 years, mentoring over 3,000 entrepreneurs. Over the years he has helped launch over 50 startups across South & Southeast Asia. He is a recipient of the prestigious Chevening Fellowship from the University of Oxford.
Chalinda blogs about the startup world and you can check it here from LinkedIn:
https://www.linkedin.com/newsletters/seed-circle-6883623682577719296/
00:00 Intro
00:36 Chalinda's story
04:16 About nVentures VC Fund
05:08 What are Fintech companies?
09:26 Startup ecosystems in Sri Lanka
14:52 Startup hubs in Sri Lanka
17:56 What is a startup?
21:52 How do VC funds make money?
24:10 How do know if the startup will fail/succeed?
35:30 Future of Sri Lanka
41:05 Global politics
44:05 Digital Nomad visas
45:15 Advice to the youth
55:32 Improve your writing
The podcast currently has 38 episodes available.