Nabin K. Malakar, Ph.D.

NASA JPL
I am a computational physicist working on societal applications of machine-learning techniques.

Research Links

My research interests span multi-disciplinary fields involving Societal applications of Machine Learning, Decision-theoretic approach to automated Experimental Design, Bayesian statistical data analysis and signal processing.

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Interested about the picture? Autonomous experimental design allows us to answer the question of where to take the measurements. More about it is here...

Hobbies

I addition to the research, I also like to hike, bike, read and play with water color.

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Saturday, August 27, 2022

My interview on DrishyaTV

अमेरिकामा कार्यरत नेपाली वैज्ञानिक डा. नवीन मालाकारले अमेरिकी अन्तरिक्ष संस्था नासामा काम गर्दा अविस्मरणीय अनुभव हासिल गरेको बताएका छन् । उनले सन् २०१४ देखि सन् २०१७ सम्म नासाको जेट प्रपल्स ल्याबमा पृथ्वीको तापमानसम्बन्धी अनुसन्धान गरेका थिए । ‘विश्वकै प्रतिष्ठित वैज्ञानिक संस्था नासामा अनुसन्धाता भएर काम गर्दा म एकदमै उत्साहित थिएँ । त्यहाँ केही गरेर देखाउनुपर्छ, के सिक्नुपर्छ भन्ने हुटहुटी मनभित्र रहेको थियो,’ उनी भन्छन् । नवीनले पृथ्वीको तापमान नाप्ने नयाँ गणितीय ‘एल्गोरिदम’ तयार पारेपछि वैज्ञानिक जगतमा उनको चर्चा बढेको थियो । यस कामका लागि उनले पृथ्वीका चार भूउपग्रहको २० वर्षदेखिको तथ्यांक विश्लेषण गरी तापमान नाप्नका लागि नयाँ विधि पत्ता लगाएका थिए । यो विधि पत्ता लागिसकेपछि अब एउटै गणितिय विधिअनुसार विश्वका विभिन्न स्थानको ताप नाप्न सकिने डा. नवीन बताउँछन् । योभन्दा पहिले पृथ्वीको तापमान सम्बन्धी अध्ययन–अनुसन्धान गर्दा अप्टिकल तथ्यांक मात्र उपलब्ध हुन्थ्यो । सन् २०११ मा न्युयोर्कस्थित सुली अल्बानी युनिभर्सिटीबाट कम्प्युटेसनल फिजिक्समा पिएचडी गरेका नवीन पृथ्वीको तापमान अर्थात् ज्वरो नाप्ने अनुसन्धानमा त्यसयता निरन्तर लागि परेका छन् । उनले सन् २००३ मा त्रिभुवन विश्वविद्यालय भौतिकशास्त्र विभागबाट ‘ब्ल्याक होल’सम्बन्धी अनुसन्धानमा एमएस्सी गरेका हुन् । उनी अहिले उस्टर स्टेट युनिभर्सिटी, म्यासाचुसेट्सको अर्थ, इन्भारोमेन्ट एन्ड फिजिक्स विभागमा असिस्टेन्ट प्रोफेसरका रुपमा अध्यापन तथा अनुसन्धान गर्दै आएका छन् । आफूले प्रतिपादन गरेको पृथ्वीको तापमान नाप्ने विधि जलवायु परिवर्तन, विपद्, कृषि बालीविज्ञान आदिका लागि उपयोगी हुने उनको धारणा छ । पछिल्लो समय उनी नेपालको विभिन्न क्षेत्रमा जलवायु परिवर्तन र तापमान वृद्घिसम्बन्धी अनुसन्धान गरिरहेका छन् । अनुसन्धान पूरा गरेर यसको नतिजा सार्वजनिक गर्न अझै केही समय लाग्ने उनको भनाइ छ । वैज्ञानिक अनुसन्धान, विज्ञान लेखन र भावी योजनामा केन्द्रित रहेर डा. नवीनसँग दृश्य टिभीले गरेको कुराकानी यहाँ प्रस्तुत गरिएको छ ।


Friday, July 23, 2021

Convening the fourth ANPA Conference 2021

I am thankful for all the support and help received during organizing the fourth ANPA Conference 2021. It was held on a virtual platform on dates July 16 through 18, 2021. 
The special highlight of the conference was the Nobel Laureate Dr. Joachim Frank, who delivered a keynote talk during the conference. In his talk, he discussed his discovery about single-particle cryo-electron microscopy (cryo-EM), for which he shared the Nobel Prize in Chemistry in 2017 with Jacques Dubochet and Richard Henderson. 
The second keynote talk was delivered by professor Bijaya Karki, Professor at Louisiana State University, Baton Rouge, LA. 
The third highlight of the conference was a Nepal focussed session that discussed the Science, Technology, and Innovation Policy of the Nepal government to engage Nepali scientific diaspora for the development of the country. Dr. Rudra Aryal facilitated the Nepali-diaspora session, with the panelists Dr. Sunil Babu Shrestha, the vice-chancellor of Nepal Academy of Science and Technology, Dr. Vishnu Raj Upreti, the executive chairperson of Policy Research Institute, Dr. Binil Aryal, the Dean of Institute of Science and Technology, Tribhuvan university discussed the current status of research activities in Nepal and how the Nepali diaspora could contribute to accelerating the research collaboration among Nepali scientists. 
During the three-day conference, there were 116 papers presented in two parallel sessions. The conference was held on a virtual platform as we could not run the in-person meetings. Hopefully next year we will have a hybrid program like we did in 2019 at Brooklyn College. 

The selected papers based upon the conference will have an opportunity to be published in the special issue of the Nepal physical Journal of Nepal Physical Society. We have made a special issue editorial team members consisting of myself, D.Pashupati Dhakal,  Dr. Arjun Dahal,  Dr. Chiranjivi Lamsal, and  Dr. Dilli Raj Paudyal. The editor of NPS (Dr. Binod Adhikari) will be the managing editor.


During the last leg of the conference, the annual general meeting (AGM) was held. Various activities conducted by ANPA were presented. Dr. Chandra Adhikari was the master of ceremony who summarized various ANPA activities, Dr. Shree Krishna Bhattarai presented the development of the new website platform, Dr. Pashupati Dhakal talked about the ANPA Winter Workshop 2020, Dr. CR Bhatt discussed the ANPA student travel award; Dr. Tikaram Neupane discussed the ANPA summer camp for the high school students, and the meeting ended with a message from the president Dr. Jagan Devkota. My sincere thanks to all the participants for the great enthusiasm and support provided by the community to organize a successful conference.

Saturday, June 5, 2021

Use of smartphones in experimental physics...


Diffraction Experiments with a Smart Cart
The Physics Teacher 59, 272 (2021); https://doi.org/10.1119/10.0004155
Writes: The use of smartphones in experimental physics is by now widely accepted and documented.1–5

I included one of the smartphone lab using the camera to find the focal length of the phone's camera lens. 


  • 1.
    M. Monteiro, C. Stari, C. Cabeza, and A. Marti, “The polarization of light and Malus’ law using smartphones,” Phys. Teach. 55, 264 (May 2017). https://doi.org/10.1119/1.4981030Google ScholarScitationISI
  • 2.A. Shakur and J. Kraft, “Measurement of Coriolis acceleration with a smartphone,” Phys. Teach. 54, 288 (May 2016). https://doi.org/10.1119/1.4947157Google ScholarScitationISI
  • 3.Martín Monteiro, Cecilia Cabeza, Arturo C. Marti, Patrik Vogt, and Jochen Kuhn, “Angular velocity and centripetal acceleration relationship,” Phys. Teach. 52, 312 (May 2014). https://doi.org/10.1119/1.4872422Google ScholarScitationISI
  • 4.Martín Monteiro, Cecilia Cabeza, and Arturo C. Marti, “Rotational energy in a physical pendulum,” Phys. Teach. 52, 180 (March 2014). https://doi.org/10.1119/1.4865529Google ScholarScitationISI
  • 5.A. Shakur and T. Sinatra, “Angular momentum,” Phys. Teach. 51, 564 (Dec. 2013). https://doi.org/10.1119/1.4830076Google ScholarScitationISI
  • Thursday, July 9, 2020

    Researchers Identify Areas Impacted by Extreme Heat to Help Vulnerable Residents Prepare

    Researchers at Worcester State are working on identifying “hot spots” in Worcester to help the most vulnerable city residents survive a growing number of extreme temperature events.

    Assistant Professor of Earth, Environment, and Physics Nabin Malakar, Ph.D., and student John Veneziano ’20 are focusing on heat vulnerability, looking at places where income level, age range (children and elders are particularly vulnerable), and housing environment stress leave people at risk of being impacted by extreme heat events. Their research will help communities make decisions about safety, Malakar says.

    “It just stands out from the data,” Malakar says. “More than 50 percent of people are living in urban areas where the heatwave can seriously impact human health and wellbeing.”

    Venezio and Malakar’s research poster “Identifying Areas Impacted by Extreme Heat Events in Worcester, Massachusetts” was presented at the 100th American Meteorological Society meeting in Boston in January.

    Extreme temperatures are “one of the leading causes of hospital visits and health issues,” write Malakar and Veneziano in their abstract. The impact of these extreme temperature events will increase as the Earth warms as a result of climate change.

    “We want to make people aware of it so in the future we can be prepared about future climate changes,” Dr. Malakar says.

    Malakar and Veneziano looked at the “urban heat island” effect, caused by a larger number of people and buildings close together in urban areas, the number of extreme heat events, and the expected increase in the number of these events as a result of climate change and the urban heat island effect that Worcester experiences.

    His presentation was well-received. “[There were] a lot of good responses to the presentation. John was enthusiastic about it,” Dr. Malakar says.

    Working on this research was an opportunity for Veneziano to get experience and exposure. While Veneziano was very prepared going into the international conference, he was still “really nervous.” There were more than 1,000 posters organized by topic, and more than 40 people viewed with interest and asked questions about his presentation, Veneziano says.

    “People were generally really curious about what I had to say,” Veneziano says, especially given that Malakar has worked with the core team of NASA scientists who worked on developing the satellite remote sensing data.

    Veneziano and Malakar started working together when Veneziano was in one of Malakar’s environmental science classes. Veneziano was a “bright student” and he “stood out” Malakar says. While Veneziano was “kind of shy in the beginning,” he now needs minimal direction in the second year of their ongoing research.

    “The purpose of research is to make the difference,” Malakar says. “The ultimate goal is to contribute to society to make a difference in people’s life.”

    Monday, June 22, 2020

    Summer Course Recognizes First-Year Students May Need More Help Transitioning to College [Archive: news.worcester.edu]

    June 22, 2020

    By: Nancy Sheehan

    A new summer course will allow incoming first-year students to get a jump on their journey into higher education at Worcester State University.

    Called “Lancer Learning,” the free, three-credit course, which will run during Summer Session II, aims to bridge the gap between high school and college to help ensure students’ academic success. The course will be offered online in a flexible format so students will have a variety of ways to complete assignments and engage with faculty, current WSU students, and others.

    Faculty leads will be Colleen Sullivan, Ph.D., associate professor of psychology, and Nabin Malakar, Ph.D., assistant professor of earth, environment, and physics. They will be assisted by a group of faculty, staff, and administrators who have volunteered their time to help with the course.

    “It’s a multidisciplinary course that will talk about the expectations inside the classroom and open students up to Blackboard, our learning management system, which they’ve probably never used before,” says Tammy Tebo, M.Ed, assistant dean of academic services. “They’ll be getting critical feedback from professors on how they should be writing in college, and be taught learning strategies specific for first-year students.”

    The course also will help incoming students build relationships with Worcester State faculty, staff, students, and administrators. “We want to provide them opportunities to gain more confidence and be better prepared to begin their first semester,” Tebo says.

    Sullivan says she hopes the course will introduce students to important tools they can use once the fall semester starts and they officially become college students.

    “What Nabin and I are trying to do is to incorporate the technology they will be using and identify some literacy resources so they can find the right tools they will need for their classes in the future,” she says. “We’re also going to work on having students start to experience learning at a college level so they can get a sense of the kinds of expectations that professors usually have.”

    The course has been designed to position students for success over the next four years, Malakar says. “We want these students to excel at our university,” he says. “Given the new scenario of this pandemic, we want to make sure that our students are successful and well prepared for the upcoming fall semester.”

    The concept for the course arose when President Barry M. Maloney set up safe reopening teams and asked one of them to focus specifically on what high school seniors coming to Worcester State in the fall might need.

    “This year is very different than before because of the pandemic,” Tebo says. “These students have experienced a major disruption, so we hope this course will fill the gap of the information they might have lost since they’ve been out of touch and maybe haven’t held a pencil in a few months.”

    The course will give enrollees social tools as well as academic ones, Sullivan says.

    “Offering both academic and social support will alleviate some of the nervousness and anxiety that they might have about coming into a new environment,” she says. “They don’t know where to look for help, so sometimes they get a little lost and this class is designed to introduce them to some of those resources and show them where they are on campus. We hope that helps alleviate some of the first-semester jitters that they often experience.”

    Course participants also will be able to get to know some of the people they will encounter when the fall semester begins. The larger group will be divided into smaller cohorts of 10 to 20 students at times, each working with its own group leader.

    “Even though this is going to be online, they will be able to meet people, know a face, find somebody they have something in common with, so that even from a social perspective, it’s not as scary to them in the fall semester,” Sullivan says.

    “We want to align students toward their future and familiarize them the tools that are available,” Malakar says. “We want them to make friends with the people that they’re going to be with, and to know that the professors are not the scariest people in the world, and that the Worcester State campus is a place where they can find all the resources they need.”

    Tentative plans call for the course to be graded on a pass/fail basis. “Lancer Learning” will run in two segments. At some point between July 6 to 10, students will need to attend one virtual welcome event for enrollees. During this time, they will learn how to log in to BlackBoard (an online system where grades and assignments are posted), review course expectations, and meet our faculty.

    From July 13 to Aug. 28, students will be expected to log in regularly and submit assignments on time. Each week, assignments and activities for the week will be posted on Mondays and due on Saturdays.

    How to register:
    An email has been sent to the Worcester State Gmail accounts of all incoming first-year students. In it, there is an electronic form to submit to enroll in the course. The deadline for enrollment is Friday July 3. Students can ask any questions by emailing asuccess@worcester.edu  or their academic advisor.

    Saturday, November 3, 2018

    नासामा नेपाली वैज्ञानिकको उपलब्धि: पृथ्वीको ताप मापनमा ठूलाे फड्को


    नवीनकुमार मालकार
    नवीनकुमार मालकार
    पृथ्वीलाई निरन्तर अवलोकन गरिरहेका चार भूउपग्रहको ४० वर्षदेखिका तथ्यांकलाई प्रयोग गर्दै एक नेपाली वैज्ञानिकले पृथ्वीको तापमान नाप्ने नयाँ गणितिय ‛एल्गोरिदम’ विकास गरेका छन्।
    नेशनल एरोनोटिक्सस एण्ड स्पेश एडमिनिस्ट्रेशन (नासा)को जेट प्रपल्सन ल्याबमा कार्यरत नेपाली वैज्ञानिक डा नवीनकुमार मालाकार नेतृत्वम अनुसन्धानकर्ताकाे एउटा समूहले भूउपग्रहबाट प्राप्त तस्विरका आधारमा एउटै गणितीय विधिबाट पृथ्वीका विभिन्न स्थानको ताप मापन गर्ने नयाँ ‘एल्गोरिदम’ विकास गरेको हो।
    यससम्बन्धी अनुसन्धान निष्कर्षसहितको लेख ‛आइइइइ ट्रान्जाक्सन एण्ड जियो साइन्स एन्ड रिमोट सेन्सिङ सोसाइटीको′ जर्नलमा प्रकाशित भएको छ। यो अनुसन्धानमा मालकारसँगै ग्यालन सी हुले, सिमाेन जे हुक, केली लार्बे, माेनिका कुक र जाेन अार स्कट संलग्न छन्।
    अहिलेसम्म फरक–फरक भूउपग्रहबाट प्राप्त तथ्यांकलाई छुट्टाछुट्टै हिसाब गरेर मान (भ्याल) पत्ता लगाइन्थ्यो। भौतिकशास्त्रका शोधकर्ता डा मालाकारले भने, ‛यो एल्गोरिदम पृथ्वीको तापमान जोडिएका तमाम विषयवस्तु अध्ययनमा विश्वव्यापी रुपमै प्रयोग हुनसक्छ। तापमान हिसाबकिताब गर्ने काममा यसले एकरुपता ल्याउनेछ।’


    यसअघि पृथ्वी तापमापन अध्ययनमा अप्टिकल डाटा मात्र उपलब्ध हुने गरेकोमा यो शोधको सफलतापछि अब थर्मल डेटा प्रयोग गर्न सकिने भएको छ। ‘सतहमा मापन गरिएको डेटा र स्याटलाइटबाट लिइएको डेटा क्रस भ्यालिडेशन गर्दा मेल खान्छ’, उनी भन्छन्।
    यो वैज्ञानिक शोधलेख प्रकाशित भएपछि वैज्ञानिक समुदायबाट राम्रो प्रतिक्रिया आएको डा मालाकार बताउँछन्।
    जलावयु परिवर्तनदेखि खेतीबाली अनुसन्धानमा उपयोगीजलवायू परिवर्तनको प्रवृत्ति देखाउन यो एल्गोरिदम उपायेगी हुने मालाकारको विश्वास छ। विगत ४० वर्षमा कुन कालखण्डमा पृथ्वीको तापक्रम कसरी परिवर्तन भएको छ भन्ने तुलनात्मक अध्ययन पनि यसबाट गर्न सकिन्छ। भूसतहको तापक्रमलाई तापसँग सम्बन्धित महत्वपूर्ण विषयवस्तु जस्तैः शहरी जनसंख्यामा बढ्दो तापक्रम (हिट स्ट्रेस)को असर, भेक्टरजनित रोगहरुको अध्ययन आदिमा उपयोग हुनेछ। यसैगरी भूसतहको तापक्रमको दीर्घकालीन प्रवृत्ति आँकलन गर्न पनि यो विधि सहायक हुनेछ।
    अनुसन्धानमा युनाइटेड स्टेट्स जियोलोजिकल सर्वे (यूएसजीएस)को चारवटा भूउपग्रह (ल्याण्डस्याट)को सहयोगमा सम्भव भएको हो। ती भूउपग्रहले पृथ्वीलाई १ सय मिटरको रिजोल्यूसनमा अवलोकन गरेका तस्विर तथ्यांकलाई अनुसन्धानमा उपयोग गरिएको छ।
    भूउपग्रहरु नम्बर ४, नम्बर ५, नम्बर ७ र नम्बर ८ बाट प्राप्त तस्विरका तथ्यांकलाई मिहिन ढंगबाट विश्लेषण गरिएको डा.मालाकार बताउँछन्। यी भूउपग्रहहरु विभिन्न समयमा यूएसजिएसले प्रक्षेपण गरेका हुन्।
    नम्बर ४, ५ भूउपग्रह सन् १९८२ मा प्रक्षेपित गरिएको थियो। नम्बर ७ सन १९९९ र ८ सन् २०१३ मा पृथ्वीको कक्षमा पठाइएको थियो।पृथ्वीका जीवन र जलवायुका लागि तापमान निकै सम्वेदनशील विषय हो। वनजंगल फडानीको निरीक्षण गर्न पनि मेरो अनुसन्धानले विकास गरेको विधि काम लाग्छ’, उनी भन्छन्, ‘किनभने जहाँ रुख काटियो त्यहाँको तापक्रम बढी देखिन्छ र रुखहरु भएको ठाउँमा स्वभाविक रुपले तापक्रम कम हुन्छ।’
    मानवजनित क्रियाकलापले भूमण्डलीय पर्यावरणलाई कस्तो असर गरेको छ भन्ने विषयको सूक्ष्म अध्ययनको लागि पनि यो प्रविधि उपयोगी हुनेछ। डा मालाकारले विकसित गरेको विधि खेतीयोग्य जमिनको उर्बरता दर परिवर्तन छ कि छैन भनेर विश्लेषण गर्न पनि प्रयोग गर्न सकिनेछ।
    ‘बालीनालीको बिमा गर्ने ठूला बिमा कम्पनीहरुले पनि हाम्रो बिधिलाई उपयाेग गर्न सक्छन्। यो विधिले सिजनको अन्त्यमा कति उत्पादन हुन्छ भन्ने निक्र्योल गर्न सक्छ’, उनी भन्छन्।
    ‘ब्लाकहोल’ अनुसन्धानकर्ता
    अहिले पृथ्वीको तापमान हिसाब गर्ने विधि पत्ता लगाएर ख्याति कमाइरहेका मालाकारले त्रिभुवन विश्वविद्यालयमा स्नातकोत्तर गर्दा भने ‘ब्ल्याकहोल’का शोधकर्ता हुन्। त्यतिबेला उनका गाइड अन्तर्राष्र्टिय ख्यातिप्राप्त भौतिकशास्त्री उदयराज खनाल थिए। विज्ञानमा जे अनुसन्धान गरे पनि त्यसले समाजलाई प्रभाव पार्ने खालको हुनुपर्छ भन्ने सोच त्यतिबेलै भएको उनी सुनाउँछन्। भन्छन्, ‛फिजिक्समा शोध गर्छु भन्ने थियो तर के गर्ने भनेर स्पस्ट मार्गचित्र मसँग थिएन।’
    नेपालको त्रिभुवन विश्वविद्यालयबाट भौतिक विज्ञानमा स्नातकोत्तर गरेका उनले युनिभर्सिटी अफ न्यूयोर्क अल्बानीबाट सन् २०११ मा भौतिक शास्त्रमा विद्यावारिधि पूरा गरेका हुन्।
    एकवर्ष यता उनी म्यासाच्यूसेट्सको उस्टर स्टेट युनिभर्सिटीमा भौतिक विज्ञानका सहायक प्राध्यापकको रुपमा कार्यरत छन्। त्यसअघि उनी पोष्ट डक्टारल शोध बैज्ञानिकको रुपमा नासाको जेट प्रपल्सन ल्याब, क्याल्टेक कयालिफोर्नीमा कार्यरत थिए। त्यहाँ उनले नासाकै भूउपग्रह मोडिस, भिआइआइआरएस लगायतका तथ्यांकबाट पृथ्वी भूसतहको तापक्रमबारे शोध गरेका थिए।
    उच्चशिक्षा अध्ययनका लागि अमेरिका आउनुअघि मालाकार मध्य बानेश्वरस्थित हिमालयन ह्वाइटहाउस कलेजमा फिजिक्स पढाउँदथे। मकवानपुरको हेटौंडामा जन्मेका नबिन मालाकारले भुटनदेवी माविबाट एसएलसी गरेका हुन्। भुटनदेवी मावीका शिक्षकहरुको प्रेरणाकै कारण आफू भौतिक विज्ञानको शिक्षामा आकर्षित भएको उनी सुनाउँछन्।
      प्रकाशित १३ कार्तिक २०७५, मंगलबार | 2018-10-30 10:51:36

       Publised on nepalkhabar.com



      The research paper:
      An Operational Land Surface Temperature Product for Landsat Thermal Data: Methodology and Validation
      Nabin K. Malakar ; Glynn C. Hulley ; Simon J. Hook ; Kelly Laraby ; Monica Cook ; John R. Schott

      Preprint is available: https://www.researchgate.net/publication/325231273_An_Operational_Land_Surface_Temperature_Product_for_Landsat_Thermal_Data_Methodology_and_Validation

      Importance Of Physics Education In Nepal: The Rising Nepal/Oct 27, 2018


      Importance Of Physics Education In Nepal 
      Dr. Rudra Aryal, 
      Hunter Francoeur &
      Dr. Nabin K Malakar
      Physics, the Greek meaning of “nature”, is a science that plays a key role in the daily life of human societies. It is the study of matter, energy and their interactions. According to a statement adopted by the International Union of Pure and Applied Physics (IUPAP, 1999), “Physics is an international enterprise, which plays a key role in the future progress of humankind”. Physics plays a key role in the world and generates fundamental knowledge. The influence of physics leads to the transfer of old technologies to the development of new ones along with productivity in economies. The interdisciplinary nature of economic growth also relies on greater cooperation between physics and other sciences. Therefore, physics education is an essential part of an advanced society.

      Impacts
      The Institute of Physics (IOP), a London based leading scientific membership society working to advance physics for the benefit of all, have reported that Physics-based companies contribute to about nine percent of the UK’s economic output and employ millions of people. Moreover, physics-based industries have multiple impacts on a country’s economy. An IOP study established that for every dollar amount invested into the physics-based industry can contribute to more than twice the value to the economy as a whole. The range of applications goes from manufacturing, fuel, crude materials, electro-mechanical, through optical-communication industries. No fields remain untouched by the impacts of physics. A famous example of how physics can aid in boosting the economic growth of a country can be illustrated by the following anecdote. Around 1850, William Gladstone, a British statesman, asked Michael Faraday why electricity was valuable. Faraday answered, “One day, you may tax it.” Obviously, one cannot imagine a standing nation without electricity today. 
      A better understanding of physics leads to a greater economic growth. Einstein’s formula of E= mc2 allowed us to harvest energy from the physical matter. When the first nuclear weapon was designed by Nuclear Physicist Robert Oppenheimer, during the Manhattan Project, it opened the door to understanding the strength of Physics in the modern society post the Second World War. This idea created the mantra that fields such as nuclear energy, pharmaceuticals, and space exploration could leapfrog a country out of its developing state and into the industrialized era. Study of physics is also perceived as the study of prosperity. 
      According to the American Institute of Physics (AIP) 2016 reports, government-supported research, and development (R&D) in the United States is less than quarter fraction while more than two-thirds of the US R&D is supported by the business-funded venues. However, basic research is still mostly supported by the US Federal government through universities and higher educational institutions. If one were to analyze the sources of funding published by the National Science Foundation’s National Center for Science and Engineering, the total R&D funding is continually increasing past 500 billion dollars since the record began in 1953. The business-sponsored R&D has increased from less than 0.6 percent of GDP in the 1950s to about 2 percent in recent years. Clearly, as the economic and business growth takes place, the industry would be able to self-support the cutting edge research as indicated by the current trends in the developed nations.
      The general desire of a country to jump forth into the industrialized stage can be accomplished through research in the cutting-edge topics. However, developing nations are not able to support or maintain these cutting-edge research endeavors. Physics in developing countries should rather focus on implementing technologies to aid the current situation, developing a basic level of science education to the public, and creating programs to involve science within the government. Once basic needs are met physics and science will be able to aid the country in many aspects of life.
      The first area that developing countries need to focus on is making the government more open to physics and science as an institution. By putting forth an effort to increase the knowledge of such sciences in the policy level, they can be applied to many aspects of life such as agriculture, medicine, and even everyday necessities such as electricity. This can start simply by taking more value in science during education and creating a foundation for the younger generation to learn. 
      The governments in developing countries should focus on the basic education of the general population in physics and science. This would be one major stepping stone towards achieving economic growth. On a global scale, eighty percent of the world’s population is located in developing countries but only twenty-eight percent of the world’s scientists come from these countries. During the colonization of many countries, education in science was limited to colonial elites who meant for their children to have higher access in countries such as the United Kingdom. Flash forward to the 1960’s and this practice was partly maintained, instead of colonial elites science education is mainly held for higher class citizens at the secondary level. 
      Once the developing countries prepare a foundation of basic science education at home then the people who are knowledgeable in physics and science can travel to other countries to bring back ideas. According to the statistics survey published by American Institute of Physics (AIP) in 2014, about 50 percent of the Ph.D. students in the USA are comprised of international students. The proportion has been about 50/50 for the last two decades. We are familiar with the trend that many physicists from developing countries are going to the USA and other developed countries for their higher education in Physics, and sciences in general. For example, more than four hundred Nepali Physicists, about ten percent of total physicists of Nepal, have received their doctorate level education in Physics from the USA. The Condensed matter physics is the most popular field in the USA followed by the particle and astrophysics. 
      According to an informal survey conducted by the Association of Nepali Physicists in America (ANPA), the condensed matter physics, and Atomic, molecular, and optical physics (AMO), Atmospheric Physics, Nuclear Physics are the most favorite topics among the physicist from the Nepali diaspora, also a good percentage are engaged into the cutting-edge Solar/photovoltaic research, biomedical physics. It is timely that the government of Nepal should connect the scientific diaspora for the transfer of knowledge to their country of origin. As an example, Physics-based projects can be used for the development for the simple things to make life at the ground level easier for the general population. Notably, there are various efforts at the personal levels in which spontaneous attempts being made to bring science to society.
      Some of the examples could include, but not limited to creating water filtration systems, geological exploration, or improving agricultural and medical practices using state-of-the-art drone technologies that will greatly facilitate countries. An idea in emerging technologies for alternative energy such as solar, or windmill, although not simple or cheap to implement may start a snowball effect in bringing the country out of the developing state. After a thorough feasibility study, the energy can be used to power production plants, which can then be utilized to create machinery that can create a system of carbon-neutral roadways and distribute electricity to all villages. This will create tremendous bounds for the country and improve all aspects of life. This energy can also be utilized in other ways such as creating farming machinery or serving in remote hospitals for people who are suffering. On top of this, it will also stimulate the economy creating new jobs and a means of making income.
      To sum up, Physics plays a key role in the world and generates fundamental knowledge. While it is a normality in many industrialized countries, it is severely lacking in the developing countries. Physics education programme should be implemented from the governmental level to improve education and provide incentives for physics and engineering based companies that can improve quality of life.
      Workforce
      Developing a strong physics program with the support of research, scholarships, and fellowships for undergraduate and graduate students can make a huge difference in the education of Nepal. Once an expert workforce has been created ideas for improving life can bring in. One simple idea such as this can help improve the manufacturing of goods and help create roadways and give energy access to millions who lack it. Physics should focus on areas that would be most rewarding to the immediate situation of the country.


      Published: 27 Oct, 2018 
      http://therisingnepal.org.np/news/26644 

      Wednesday, May 25, 2016

      Special Issue "Sustainability in the Mountains Region"




      Mountains are a part of the global biodiversity repository, play a vital role in maintaining global ecosystems, while supporting millions of people. In the meantime, they are the most vulnerable ecosystems. Changes in the environment and economic priorities in past few decades have considerably influenced the livelihood and sustainability of mountains globally. The effects of changing climate and other socioeconomic factors on mountains can affect the densely populated and underdeveloped regions to an inconceivable scale. It is, therefore, important that we study the impacts of climate change, changes in economic priorities of the mountain residents, and increasing non-conventional values of mountain ecosystems and its inhabitants. Moreover, the factors affecting the sustainable livelihood of mountain inhabitants need to be carefully studied to assess the short and long-term impacts, and to develop a long-term strategy for improving the livelihood of the residents in the face of the changes.
      This Special Issue will feature peer-reviewed papers from the international conference on “Mountains in the Changing World (MoChWo)”, to be held in Kathmandu, Nepal, on 1–2 October, 2016 (http://conference.kias.org.np). The conference and the Special Issue aim to provide a forum for international/national scholars, researchers, policy makers, and students with an opportunity to share their research findings and knowledge related to various aspects of mountains.  
      The range of relevant topics include:
      • Environmental, economic and social sustainability
      • Land use and land cover monitoring, natural disaster and risk assessment
      • Decision making and societal impacts, policy and management strategies for sustainable development
      • Citizen science and trainings
      • Remote sensing, and mapping of resources
      • Data fusion, and data visualization relevant to sustainability issues
      • Innovation in renewable and alternative energy
      • Pesticide uses and sustainable agriculture
      • Organic farming
      We welcome papers from broadly defined topics that are relevant to the theme of the Special Issue.
      Dr. Nabin K Malakar
      Dr. Rajan Ghimire
      Dr. Jhalendra Rijal
      Dr. Pradeep Wagle
      Guest Editors
      -->

      Friday, April 8, 2016

      An Interview with Dr. Mike Abrams, #ASTER project leader @NASAJPL

      The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument has been flying in space on the Terra platform since its launch in 1999. Not bad for a satellite which had an expected lifespan of five-years. Hopefully it will continue into the foreseeable future. The instrument acquires images in visible, near infrared, and thermal infrared wavelengths (TIR). The spatial resolution range from 15 to 90 meters. ASTER spans +- 83 degree latitudes, and covers 99 percent of earth's landmass.  ASTER also produces one of the high resolution elevation dataset (30m).
      Recently, NASA released the complete archive (2.95 million images) of Earth's thermal infrared images to the public with unlimited access. Previously, users could access ASTER's global digital topographic maps for free, however, other ASTER data products were available at nominal fee paid to Japan’s Ministry of Economy, Trade and Industry (METI).
      ASTER has been used to study, map, and monitor the ever-changing surface of our planet Earth. Some of the products and application of ASTER data include surface mapping and monitoring of changes in surface properties such as glacial advance/retreat, volcanism, crop stress, cloud properties, wetlands, coral reef degradation, land surface temperature, surface geology, etc.

      A good selection of ASTER images can be found on the ASTER web site, gallery pages:

      The dataset is available at:

      We stopped by the office of Dr. Mike Abrams, the project leader for ASTER science team at NASA JPL.
      Here are 5 quick questions with him:

      1. Please share your experience with the ASTER project.
      I have been involved with the ASTER project since its inception in 1988 as part of NASA’s Earth Observing System (EOS) program. Working with my Japanese colleagues and traveling to Japan has been an enriching inter-cultural experience. Added to that is the satisfaction of the success of our 16-year joint mission
      2. Why are the millions of ASTER images being made public?
      In Japan, oversight of the ASTER project was transferred from one organization to another. The new operator is part of Japan’s National Science Institutes. Jointly, with NASA, the decision was made to eliminate charging for all ASTER data.

      3. How can users get maximum use out of the ASTER data?
      Natural color, full resolution JPEG images can be downloaded for all images in the archive. No sophisticated software is needed to view these images. (https://lta.cr.usgs.gov/terralook/home). To do more in-depth analyses, the digital data must be downloaded, then analyzed with GIS or image processing software.

      4. What are the unique feature of ASTER? (Some examples of news for societal benefit.)
      Our high resolution, global Digital Elevation Model (DEM) data set is unique. It is the only topographic data freely available to all users covering the land surface of the Earth at 30m resolution. We have a vigorous monitoring program of 1500+ active volcanoes, and 100,000+ glaciers, looking for time-dependent change. We also acquire many images for post-disaster mitigation, like damage from tsunamis.
      5. Do you have favorite image(s) of ASTER?
      See the interview with National Geographic: http://news.nationalgeographic.com/2016/04/160406-pictures-nasa-terra-aster-satellites-space-science/

      A selfie with Dr. Abrams.
      Note: I had an opportunity to be a co-author with him on the paper:
      The ASTER Global Emissivity Dataset (ASTER GED): Mapping Earth's emissivity at 100 meter spatial scale, GC Hulley, SJ Hook, E Abbott, N Malakar, T Islam, M Abrams
      Geophysical Research Letters 42 (DOI: 10.1002/2015GL065564)
      http://onlinelibrary.wiley.com/doi/10.1002/2015GL065564/full 

      Thursday, February 11, 2016

      Gravitational Waves and LIGO Experiment

      One of the fascinating argument of Einsteins' theory of General Relativity can be simply illustrated by the foam-ball diagram. Where a heavy ball put on the surface would produce a curvature. Thereby generating the deformation so that if a lighter ball is rolling nearby, it would cause the ball to roll towards the bigger ball.

      Similarly, if we imagine that the space-time that our universe resides is a giant surface in 4-dimension, then we can argue that things that have mass will cause that surface to bend. In other words, the matter will tell the spacetime where to bend while the spacetime curvature will then dictate how the mass will travel.  The more "heavy" the mass, the more bending. Ultimately, the  heavy "mass" or huge Energy, can cause a hole in the fabric of spacetime. That we call the black hole!

      What is interesting is that we can imagine traveling from point A to B. If the amount of effort that is required is called as action, then naturally one tends to minimize the action. The most straightforward way to minimize the action in two dimension is a straight line! Now, if you were in four dimension, and wanted to go from point (need to call it a four-point as it has four co-ordinates) A to point B. Then naturally, it would be a "straight" line in 4D! However, the manifestation of the space and time makes it look like a curved line near the "heavy" masses. That's the reason behind the orbits of the planets. You may ask: but, aren't the planets coming back to the same positions after one planetary year? Yes, that is right in space. But in time, you moved one year's worth of journey! Think about it!
      That means there is no force which is pulling things around. It is just the manifestation of the bending of the spacetime fabric.

      When  masses accelerate, gravitational waves are produced. This can cause "ripples" in the space!
      The LIGO experiment, (LIGO: The Laster Interferometer Gravitational-Wave Observatory) was designed in 1992. It is a large-scale physics experiment to detect gravitational waves. It consists of 4 km long tunnels in L-shape. LASER interferometry is used to detect any change in the fabric of space due to the gravitational wave. Interferometry go about finding changes in the distance between the points A and B by using the principle of superposition of the waves, by measuring the change in the fringes due to shifting of the reflecting mirrors for example.  This works because when two waves with the same wavelength/frequency meet, their fates are determined by the phase difference between the waves. The waves in phase will undergo constructive interference and the out-of-phase will undergo destructive interference [See this video: https://www.youtube.com/watch?v=J_xd9hUZ2AY More specifically this one : https://www.youtube.com/watch?v=oUytkiBwXvI]. 

      In the case of LIGO experiment, the primary interferometers consist of mirrors suspended at each corners of the L-shaped vacuum tube (4km long). A LASER beam is used to monitor the interference patterns called fringes. When a gravitational wave passes through the interferometer site, the fabric of spacetime is affected. Since the instrument is L-shaped, one side will be stretched while the other side is compressed. This changes the phase of the reflecting waves causing the phase difference between the ends of the L-tube, and thus the wave should be detected!!! 
      The LIGO has to detect the distortion of 10^(-18) m in space for the light that reflects off the 4-km long tunnel! This is the length less than one thousandth of the diameter of a proton (fm=10^-15). Moreover, since there are two LIGO experiment sites(46°27′18.52″N119°24′27.56″W and
      30°33′46.42″N90°46′27.27″W), triangulation method can be used to find the source of the ripple!
      Here is a nice video explaining the method


      Now here comes the big news!

      LIGO has detected the gravitational wave!!!
      The authors claim that the signals came from two merging black holes, each about 30 times the mass of our sun, lying 1.3 billion light-years away.
      The scientific paper is here:

      If you are interested in the press release,
      https://mediaassets.caltech.edu/gwave#graphics

      FYI: India is working on next LIGO experiment
      https://www.ligo.caltech.edu/page/ligo-india

      Also, it seems like Einstein had doubt about the Gravitational waves at some point
      http://scitation.aip.org/content/aip/magazine/physicstoday/article/58/9/10.1063/1.2117822

      One interesting presentation
      https://www.youtube.com/watch?v=ajZojAwfEbs


      Disclaimer: These are my personal notes. Please draw conclusions at your own risk.



      Tuesday, January 20, 2015

      Crowdfunding Science: Experience from a Developing Country

      In 2014, we raised $3772.10 + NRs 61797 from a fundraising campaign in my coordination. Majority of this amount was collected via a crowdfunding platform, the Fundrazr.com and was used to buy UV-Vis spectrophotometer (a scientific instrument) and accessories for Department of Chemistry, Mahendra Morang Adarsha Multiple Campus (MMAMC), Biratnagar, Nepal.
      Educational institutions in Nepal like other developing countries lack basic infrastructure (instruments, equipment) for teaching and research in science, as unfortunately, support from the government is not enough. However, despite the lack of basic facilities, few enthusiastic researchers are trying their best to carry out research and train their students in science.
      Among various other campuses around the country, MMAMC, Biratnagar desperately needed an UV-Vis spectrophotometer, one of the basic instruments in many disciplines of science including chemistry. Unfortunately, neither MMAMC nor the Tribhuvan University could support the purchase of this instrument, making external funding crucial. Unlike others, Dr. Ajaya Bhattarai, assistant professor of chemistry from MMAMC came forward and discussed the possibilities of obtaining funds with me.
      Crowdfunding
      We then decided to ask our friends around the globe to donate. Rather than asking privately, we decided to use a public forum in order to let more people know about our campaign for a good cause.
      In recent years, crowdfunding has become very popular to generate funds for variety of purposes including support for scientific research. The crowdfunding is an idea of raising fund for a common cause from a large number of people primarily via internet. Even though crowdfunding had initially found successful in developed countries like US, Europe, and Australia, the rapid rise of mobile technology and social media utilization has made crowdfunding more viable opportunity to finance innovation in developing countries.
      Ready to face harsh comments and questions

      When you ask for money, there are people who think the donation is important and are happy with it; however, you also face some people who have an aversion to the idea. We also obtained similar responses. Most of the comments we received during the fundraising period were very encouraging. But there were some negative ones. Some people tried to connect my relationship to Biratnagar and if it was for my personal benefit. One person, I know personally, argued really hard with me and said he would donate if it were for his village or school. There were some social media arguments started at the same time referring to the idea of “giving” to developing country is really bad.
      Important factors for successful crowdfunding
      Not all projects seeking crowdfunding are successful. More than half of such projects fail to reach their goal.  I have following suggestions for successful fundraising campaign.
      1. A clear idea: Our fundraising campaign had a clear goal of buying scientific instrument for MMAMC and a good explanation of why the fund was needed.
      2. Networking: We networked to our prospective donors primarily through Facebook. We have a group of Nepali chemists on Facebook; that helped a lot. We reached out to all of them in addition to contacting people from Biratnagar and those who studied in MMAMC residing in developed countries. We also sent personal email to many donors.
      3. Know your target donors: People who are either affiliated to the MMAMC or had studied chemistry residing abroad were our target donors. However, we raised a considerable amount of money from people residing in Nepal offline. As online payment system is not widely used in developing countries, it was difficult to raise funds inside country via online platform.
      4. Authenticity: It is important to understand the fact that potential donors are very cautious about the authenticity of the fundraising and the proper use of money after collection. Our donors were familiar to the fact that the instruments donated to Tribhuvan University and other governmental research centers mostly sit idle dust covered. Therefore, in our case, we had to convince our donors that the instrument would definitely be used regularly. Dr. Ajaya Bhattarai and his background played crucial role in this case.
      A successful example.
      Potential funders want to see the people behind the fundraising event. We asked ourselves: do people really believe on what we are asking for? We tried our best to be as transparent as possible telling who are behind the fund raise, how the money will be utilized and who will be responsible for purchase, use, and care of instrument. We requested our friends to share the event using social media.
      Before this fundraise event, my friends (mostly chemists) and I had also raised fund to buy a projector and laptop for Central Department of Chemistry, Tribhuvan University. This previous experience increased our confidence and people’s belief on us.
      1. Share and publish the details: We kept updating the progress of fundraising on regular basis. We wrote our aim and objectives clearly on the crowdfunding website.
      Did we get all money raised?
      The answer is a big NO. In our case, the crowdfunding company deducted 8.7% of the total money raised via crowdfunding platform (online) including the PayPal fee. Plus a fee to transfer money from US to Nepal.

      Finally, I am happy to share with you that the instrument we donated is being regularly used and has generated some data. Dr. Ajaya Bhattarai recently presented the findings of his research on the interaction of dyes with surfactants using UV-Vis spectrophotometer in the 16th international symposium on eco-materials processing and design (ISEPD 2015) in Kathmandu, Nepal. This is important to mention here because many people think [which unfortunately could be true in some cases] that donated equipment are not being used rather they are stored with dust covered. Well, we assure to let the work speak for itself. Thank you!


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