All posts by Muskan Saha

Photonics in fruit grading

Fruit commercialization is adopting the scientific method and detecting, grading, packaging the fruits on the basis of comprehending the physiology metabolism law, protecting and improving the quality, and achieving the change from the elementary raw material to high added-value commodity. Nowadays, reducing the consumption of post-harvest fruit is the most concerned question for the world agricultural trade. It
was reported that the consumption of post-harvest fruit in developed countries accounted for the 15-20% of the total amount. China is the world’s largest fruits and vegetables production country. The breeding, culturing, and pest control was paid much attention, however, the post-harvest processing technology was neglected, the question of detecting, grading, transporting, preservation was not solved, so the lost of post-harvest fruits and vegetables in circulation was huge, the loss ratio was 30%~40% every year.

With the rapid development of science and technology and computer vision technique to the development of agricultural field, new methods of non-destructive detection for fruit quality were provided. The main methods included optical properties, sonic vibration, nuclear magnetic resonance (NMR), machine vision technique, electrical properties detection, computed tomography and electronic noses technique and so on.

In recent years, fruits (of any variety) has become one of the most dependable organic product produced by farmers across the world; this lived much to its expectation as it serves not only for direct consumption, but also as a raw material for other products. Organic products grading and sorting is a vital procedure for producers, which influences the natural products quality assessment and export market. Despite the fact that the grading and sorting can be and has always been done by human, it is slow, tedious and prone to error, hence the need to evolve a smart fruit grading and sorting machine system. Researchers, at various level had come up with various designs with different algorithms for fruit grading by utilizing textural and morphological elements to distinguish the healthy fruits from the defected ones. Subsequently, these features, otherwise known as optical sorting, is the automated process of sorting solid products using sensors. Such sensors utilize product driven knowledge of the picture preparing system, by detecting the colour of fruits, shape and other auxiliary properties. The sensor (sorter) compares fruits based on client’s characterized acknowledgment to distinguish, sort and expel defected fruits and other foreign material from the creation line or to isolate result of various evaluations.

More LCA Tejas for the IAF

Tejas is an LCA (Light Combat Aircraft) designed by HAL (Hindustan Aeronautics Limited) for the Indian Air Force and Indian Navy. The HAL Tejas is an Indian single-engine, fourth-generation, multirole light fighter. It came from the Light Combat Aircraft (LCA) program, which began in the 1980s to replace India’s aging MiG-21 fighters. In 2003, the LCA was officially named “Tejas”. It was developed as a replacement for older Mig-21 Aircraft.

As of 2019, the Indian Air Force has planned for a total of 324 Tejas in several variants. The first batch of 40 Mark 1 aircraft consists of 16 Initial Operational Clearance (IOC) standards that were delivered in early 2019. The delivery of the second batch of 16 Full Operational Clearance (FOC) standard aircraft commenced in late 2019 and led to the formation of the second Tejas squadron — No. 18 Squadron IAF Flying Bullets — in Sulur on 27 May 2020. The IAF will also go on to receive eight twin-seat trainers. The next 83 are to be to the upgraded Mark 1A standard. By the time these first 123 are delivered, the Tejas Mark 2 is expected to be ready for series production by 2025–26.

Recent news says that India is likely to finalize the INR 40,000 crore contract for 83 Light Combat Aircraft (LCA) Tejas jets, 20% cheaper from previously quoted price, next February at DefExpo-2020 event in Lucknow city, Uttar Pradesh state. In November 2016, Defense Acquisition Council (DAC), India’s highest decision-making body on procurement, approved the purchase of Tejas Mark-1A fighters by the IAF at a cost of Rs 50,025 crore. Subsequent negotiations between defense ministry, Indian Air Force (IAF), and manufacturer Hindustan Aeronautics Limited (HAL) have helped bring down the price of the jets from INR 50,025 crore to INR 40,000 crore, Indian media reported late last week. “The draft contract of the deal has been readied by the HAL and the cost of the deal has now come down to around Rs 40,000 crore. This is Rs 10,000 crore less than the Acceptance of Necessity given by the Defense Ministry in 2016,” defense sources said. In December 2017, the IAF had issued a single-vendor tender to the HAL for procuring 83 LCA, but the negotiations and other related issues have been going on since then mainly due to issues over the price.

The aircraft will have improved serviceability, faster weapon-loading time, enhanced survivability, a better electronic warfare suite, an Active Electronically Scanned Array (AESA) radar that will significantly enhance its capability.  The Centre for Military Airworthiness and Certification (CEMILAC) had provided the Final Operational Clearance to the Tejas LCA earlier this year during Aero India in Bengaluru approving its capabilities including beyond visual range air-to-air and air-to-ground attack capabilities as well as longer endurance through mid-air refueling. In a previous order, the IAF had signed a deal with the HAL for 40 Tejas LCAs. So far, around 18 LCAs have been delivered to the IAF from the previous order.

Biggest twitter hack In US

Some of the hackers, who cheat people and earn money always try to find ways to use the internet and social media platforms for their benefit. The earlier such hacks have been through online games, phishing, malware, smishing, insecure networks, physical security threats, etc. We all are aware of the very famous Ransom virus which affected a very large population. Over time, hackers change their ways to attack people and steal money.

The recent news is the twitter hack in the US of some billionaires. The Twitter accounts of Joe Biden, Elon Musk, Jeff Bezos, Kanye West were among the tens of high-profile accounts that were hijacked last night. These accounts were then used to spread bitcoin scams and fool people into donating money through a link. Billionaires Elon Musk, Jeff Bezos and Bill Gates are among many prominent US figures targeted by hackers on Twitter in an apparent Bitcoin scam. The official accounts of Barack Obama, Joe Biden, and Kanye West also requested donations in the cryptocurrency. “Everyone is asking me to give back,” a tweet from Mr. Gates’ account said. “You send $1,000, I send you back $2,000.”

“We’re looking into what other malicious activity they may have conducted or information they may have accessed and will share more here as we have it,” the company tweeted. Twitter said that once they became aware of what happened, they “immediately locked down” hacked accounts and removed the tweets sent on their behalf. Twitter also limited functionality for all verified accounts, including those that showed no evidence of being compromised, while they investigated the issue. “We have locked accounts that were compromised and will restore access to the original account owner only when we are certain we can do so securely,” Twitter said. “Internally, we’ve taken significant steps to limit access to internal systems and tools while our investigation is ongoing. More updates to come as our investigation continues.”

Twitter also acknowledged that the hacks were a coordinated social engineering attack by people who successfully “targeted some of our employees with access to internal systems and tools.” Screenshots of the panel being posted by users are being taken down as a violation of Twitter policies. “As per our rules, we’re taking action on any private, personal information shared in Tweets,” said a Twitter spokesperson.

Some leading cryptocurrency sites were also compromised on Wednesday. Cryptocurrency platforms like Coinbase and Gemini falsely “announced” they had partnered up with an organization called CryptoForHealth, through their Twitter accounts. They claimed that the organization was going to provide people with bitcoin as long as they sent some to an address first. Other prominent Twitter accounts that were hacked were that of President Barack Obama, Kim Kardashian West, Warren Buffett, Jeff Bezos, and Mike Bloomberg. Official accounts of Uber and Apple tweeted out a post that was a spam message. The spam message directed readers to invest bitcoin in the wallet address that was provided in the tweets and claimed that they would get double the money they spend.

Science and God

“Science” and “God”, the two words which are often seen as separate entities. These words seem conflicting to most of us and are often a topic of debate. Science seems to question the existence of God and believers of God often question why we are unable to explain the entire universe completely by science till date, a question on the success of science. We can often come across debates on televisions, radio, magazines, etc where people try to prove one as superior over the other. But, are they really two different things? Are they conflicting terms? Or are they same?

A deeper thought over it can clear our confusion. If we deep dig, we find that indeed both are connected. We really don’t need to choose between them. Science and God, are superior powers. The differences arise when we start associating God with some particular religion and Science with the only education. In reality, science is the process of thinking God’s thought after him. “An equation is really nothing unless it expresses a thought of God”, according to Ramanujan. They both actually merge at the spiritual level.

When we talk of science, it is the theories, the fundamental laws that very well explains the nature around us. It offers an explanation of all the natural phenomena in a very beautiful way and at a very basic level. It helped us understand how to converse in the language of nature, i.e in mathematics. It gives human power. The more we as humans understand science, the more powerful we become. Visit the days when humans started to understand science to get to know about the secrets of nature, the things they imagined then are now a reality. The gadgets they considered as their dreams are now in our hands. The technology we imagine today will also become a reality pretty soon. Science gave a power to humans to achieve the impossible.

God, on the other hand, is another superiority. There has been no proper evidence of someone seeing a God. We have not seen God, but we all believe in a “power” that is superior to all of us and many refer to this superior power as “God”. God gives humans the strength and power by making us understand the language of love and humanity. Spirituality is the heart of a human being and through God, we reach here. God helps us understand our potential and make us believe in our strengths. It changes our perception and makes the world a very beautiful and peaceful place for us. The world is incomplete without God.

We can thus conclude,  that both Science and God are a source of immense power to human beings and both are tied together. Both speak the same language. The more faith we develop in God, the more we get close to science, the more we understand science, our belief in the existence of God becomes stronger. Louis Pasteur rightly said that “a bit of science can distance us from God, but more of it nears one to him”, and that is for sure. Diving deep into them will give us immense power and peace.

Is Nepal the origin of Lord Rama?

On July 14, Nepal PM triggers a debate: “Where is Ayodhya, the origin of Lord Rama?”. The real Ayodhya lies at Thori in the west of Birgunj. India has claimed the Indian site as the birthplace of Lord Ram,” said Nepal’s Prime Minister KP Sharma Oli on Monday while rejecting the traditional “belief” that Nepali daughter Sita was married to an Indian Prince Ram.

Oli was speaking at an event to commemorate the birth anniversary of poet Bhanubhakta, credited with the first authentic translation of Valmiki’s Ramayan into the Nepali language. “The place called Thori, near Birgunj is the real Ayodhya, where Lord Ram was born. In India, there is a great dispute on Ayodhya. But, there is no dispute in our Ayodhya,” Prime Minister Oli was quoted as saying by his press advisor Surya Thapa. Politically, Oli’s comment comes as a refutation of India’s Defence Minister Rajnath Singh’s comment made last month when he had said India and Nepal have a “roti-beti” relation referring to cross-border marriages. However, Oli’s remarks have sparked off a debate on the “real” location of Ayodhya, the birthplace of Lord Ram and the capital of his kingdom as mentioned in ancient texts.

Condemning Mr. Oli for his remarks, BJP national spokesperson Bizay Sonkar Shastri said that the Communists in Nepal will be rejected by the masses in the same way they have been in India, even as Left parties in India played with people’s faith. “Lord Ram is a matter of faith for us, and people will not allow anybody, be it Prime Minister of Nepal or anyone, to play with this,” he said in New Delhi.

Oral history, as compiled into the Ramayan by Valkimi, places Ayodhya in modern Uttar Pradesh. Ramayan tradition identifies Ayodhya as the birthplace of Ram for around 3,000 years, based on literary evidence. Lack of archaeological evidence has kept the debate raging for years. The statement, however, was not only opposed by Indian citizens but by Nepali citizens as well. Nepal PM has been taking many controversial decisions and  making controversial statements in the recent days, one of which was releasing of Nepal’s map with Indian city. While Oli’s unexpected territorial claim followed by allegations that India was behind moves to have him dethroned have been rejected by New Delhi, some have looked at it with suspicion even in Nepal, accusing Oli of playing the India card to hide his own government’s alleged failures. Oli’s recent claim about Lord Rama, too, has drawn sharp reactions from both inside India and Nepal.

However, clarification on the statement of Nepal PM has been given now. The Nepal Ministry of Foreign Affairs sought to shield Prime Minister K P Sharma Oli’s comments on Lord Ram from criticism by clarifying that he did not mean to debase the significance of Ayodhya and the cultural value it bears. The MFA said the remarks were not linked to any political subject and were not intended to hurt the feelings and sentiment of anyone. It added that as there have been several myths and references about Lord Ram and the places associated with him, the PM was “simply highlighting the importance of further studies and research of the vast cultural geography the Ramayana represents to obtain facts about Shri Ram, Ramayana and the various places linked to this rich civilization.” “As there have been several myths and references about Shri Ram and the places associated with him, the Prime Minister was simply highlighting the importance of further studies and research of the vast cultural geography the Ramayana represents to obtain facts about Shri Ram, Ramayana and the various places linked to this rich civilization,” it added. The ministry further said, “It may be underlined that the tradition of celebrating Bibaha Panchami where a marriage procession coming from Ayodhya, India to Janakpur, Nepal takes place every year. The Prime Ministers of Nepal and India launched the Ramayana Circuit in May 2018, of which Janakpur-Ayodhya Passenger Bus Service is an important component. These facts signify the bond of time-honored cultural affinity between our two countries and peoples.”

Financial Literacy for girls

We all are aware that education is a very important tool for all of us, to build our personality, to shape our future. It really does not matter whether we get this education from school, or from outside school, education has a key role to play behind the success of any person. But now, from school time, we are told about that education that will help us earn money by working for it. Hard-work, dedication, and skill in a particular field are told to be the requirements to be a good employee, focusing on which can help us earn money and grow. Schools and society hardly teach teenagers about the importance of financial literacy in one’s life. There is no school where students are made aware of financial literacy and its importance. But, indeed, it is a very important skill needed to get out of the ‘rat-race’.

If we want to become financially literate, surely we won’t be spoonfed. We need to be alert, aware, curious, as well as creative enough to gather the knowledge. One needs to understand that hard work and dedication can’t get us to everything in life. Studying hard, getting a government job, with a secure future can sound peaceful, but once people get to it, people often complain about their work, problems like not getting promotions, lack of holidays, and a lot more. Employers are often blamed. But it is not employers’ fault, it is our fault that we lack financial education to get out of this “trap”. Yes, but, smart work and the desire to constantly learn and grow is what that can help us get out of the ‘rat-race’. The trick is to “stop working for money and make money work for us”.

A very major issue is financial literacy is lacking too much in girls. Yes, there are girls who are financially literate but the fraction is too low. The general mindset that society has is that there exist a father and husband in a girl’s life and they can very well take care of the finance part for them. It is common that things like fashion, cooking skills, etc are discussed with and among girls but it is quite uncommon to find them discuss stocks, investment, and finance. Apart from these, being financially literate comes with the power to overcome fear and take risks. But, it is quite difficult for a girl to take risks as a society often don’t recognize their potential. We need to overcome this mindset that keeps girls dependent on others. It is the need of the girl as well as the need of the society that they stand out strong and work for their own financial goals. Girls need to be aware and they need to become financially literate. It is also known that girls can better handle finance than boys. So, why one should not use this potential. Financial literacy for girls is also a very important and crucial step towards women empowerment. They also need to understand finance and work for their financial independence.

Financial literacy is very important for the progress of any individual or society. It helps you get out of the trap where you start working for money and can never get out of the trap. It prevents us from becoming slaves to money and become master of it.

Mobile App ‘eBloodServices’

These days when all of us are dealing with pandemic COVID-19, it has been a very hard time for all of us and we all are contributing our parts to come out of this difficult situation. All of us are doing great as fighters. With the coming of problems, we all are thinking innovative and creative to come up with solution to it. One such step was to launch mobile app ‘eBloodServices’.Union Health Minister Dr Harsh Vardhan on launched the eBlood Services Mobile Application, in partnership with the New Delhi based Indian Red Cross Society (IRCS), on 25 June 2020 for easy access to blood to fight with the critical time of coronavirus pandemic.

This application is developed by the E-Raktkosh team of Centre for Development of Advanced Computing under the Digital India scheme launched by Prime Minister Narendra Modi in 2015. The application will bring transparency and facilitate single-window access to blood services of the Indian Red Cross Society, officials said. This initiative would help the people to get the blood on time just by registering on the application. Also, people can demand up to four units of blood. Blood-related services are required by many people in the country as they face certain medical conditions in their families. With the help of eBlood Services App, four units of blood can be requisitioned at a time. Blood Bank will wait for as long as 12 hours for the person to collect it. The app will make it easy for those in need to request for blood units at IRCS NHQ.

Speaking on the occasion, the Minister said, “People who need blood can get registered on this app and know from where they will get blood.” Vardhan said, “In the last few months, I received several complaints from people facing difficulties in accessing safe blood. Many people require blood-related services regularly because of certain medical conditions in their families. Through this app, four units of blood can be requisitioned at a time and the blood bank will wait for 12 hours for the person to collect it.” At a time when the country is going through a pandemic, the mobile app will provide succour to all those who are in dire need of blood,” the health minister said. Users with this app can know the live status of blood availability at the national headquarters of the Indian Red Cross Society (IRCS) blood bank in Delhi. He appealed to people to come forward to donate blood as their contribution is required more than ever now.

All 89 IRCS blood banks and 1,100 branches across the country have collected more than 1,00,000 units of blood through in-house donations and from around 2,000 donation camps organized during the lockdown. Also, more than 38,000 blood donors registered with NHQ Blood Bank have been contacted and motivated to donate blood. The NHQ Blood Bank conducted 55 blood donation camps collecting 2,896 units of blood. Blood has been issued to 7,113 patients which include 2,923 thalassaemic patients as well as to the government hospitals like Lady Hardinge (624 units) and AIIMS, Delhi (378 Units).The IRCS has served more than 3,00,00,000 cooked meals and provided ration to more than 11,00,000 families.

Indian Institute of science education and research

Indian Institute of Science Education and Research (IISER) are public research institutes of India. These are the premier institutes of India. The institutes were established by the Government of India through the Ministry of Human Resource Development (MHRD) to provide quality college education in basic sciences coupled with a taste research at the undergraduate level itself. The institutes were formally established by the Parliament of India through the National Institutes of Technology, Science Education and Research (Amendment) Act, 2010 (an amendment to the National Institutes of Technology Act, 2007). Seven IISERs have been established across the country, namely IISER Kolkata in West Bengal, IISER Pune in Maharashtra, IISER Mohali in Punjab, IISER Bhopal in Madhya Pradesh, IISER Thiruvananthapuram in Kerala, IISER Tirupati in Andhra Pradesh, and IISER Berhampur in Odisha. The basic idea behind establishment of IISERs was to promote research-oriented training and to promote basic sciences. Indian Institute of Science, Bangalore and National Institute of Science Education and Research, Bhubaneswar has already been established to promote natural sciences but were not enough for a large country like India with enormous number of students having the potential to go ahead with research. All IISERs were declared as Institutes of National Importance by the Parliament of India in 2012, to promote them as leading institutions in the country in the field of basic sciences along with its sister institutes mentioned above.

The main degree provided by IISERs are BS-MS in any natural science stream. Since the institutes are new in India and so is the degree provided by them, many people in India, even the educated ones are not aware of what does this degree means and often mix it with BSc and Msc. The degree has already been offered in foreign countries like US, Germany, etc but was introduced in India after establishment of IISERs. BS-MS (Bachelor of Science – Master of Science) is a five year dual degree program. The program focuses to train students to pursue a career in academia, R&D institutes and science based industries. They are introduced with the idea of how to carry with the research and build up a career. The motivation is the reason why IISERs are equipped with world-class lab facilities and highly exceptional researches are carried out in these labs.

Besides the BS-MS in natural sciences, as the institute is growing and establishing new departments, some of the IISERs are offering only BS (4 years )as well, not only in natural science stream but in engineering sciences and economics as well. IISER Bhopal is the one offering BS in Engineering Sciences (Computer Science, Electrical Engineering, Chemical Engineerning) and BS in economics. IISERs are said to be on the same level for research as IITs are for engineering. Now, recently, IITs have also started offering BS-MS degrees. IISERs provide a great opportunity for young, innovative and bright minds to excel in science and research. IISERs have collaborated with many foreign universities, research institutes and industries and is rapidly gaining recognition due to the work done by its student members and faculty members. The institute is expected to excel exponentially and become a very great opportunity to students.

Board Results AMIDST pandemic days !!!

Class 10th and 12th are the days of board exams. The board exams are important for all the students as well as their parents and family. The entire family eagerly waits for the board results of their child.

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Every year, Board Exams are held in India in March and April and results are usually declared around May and June. But this time, the situation is a bit different. Due to COVID-19 pandemic, the exams could not be conducted, there was an unexpected shutdown of schools and exams were postponed hoping it can be conducted a few months later. But, the spread of virus could not be controlled in these days and the number of infected population kept on increasing. An initial prediction gave an estimate that the corona cases can get under control by July and hence board exams can be held in July, but unfortunately that prediction didn’t work out. The administration tried out different options so that the remaining exams could be held and students can get the marks and grades that they actually deserve. It was decided that by maintaing proper sanitisation as well social distancing rules at schools, and by following proper guidelines such as wearing masks,etc, exams will be conducted in July. Unfortunately, all these proposals could not be put into action due to the continuous increase in number of cases. It was now wise to see and care for the health of students rather than for the exams. So, it was decided not to take risk on the life of youngsters. It was announced that all the exams are to be cancelled and results are to be declared by 15th of July. The assessment will be based on the exams given by the student till then.

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Besides the challenge faced by the students, it was a tough time for teachers as well to do the evaluation while staying at home. The answer sheets of students were made to reach teachers at their home itself and they  could complete the copy-checking at their place. All updation of marks of individual students was done online and compilation was done and results of students were prepared. Results of class 10th and 12th for different boards are already declared and is  to be declared for CBSE in a few days. Since exams were not conducted in the way it used to be. Thus, this time it is expected that there will be a very easy grading. Due to this, it is expected that the a large number of board students will clear the exam. The pass percentage is expected to be high this year. Since relaxed marking is expected this time, hence most of the students are expected to be satisfied with the results. However, there are chances that a few students might find their score not satisfactory as they could have performed better if exams were held. For this, the administration has come up with the solution of re-examination for those students who are not satisfied with their result and want improvement. 

The situation has been hard for all of us. Everyone tried their best to keep the situation as normal as possible. The idea of holding the examination was also supported until it was understood that this idea could make the situation worse, due to which, then the idea was dropped. After the examination, admission to class 11 has to be done. And for students of class 12th, admissions to colleges needs to be done. Hence, there was a need to wrap up with the school exams and go ahead with the competitive exams and admission process. Taking the decisions were difficult for everyone but there is a hope that the decisions taken will bring out the best results for the majority.

Anuran vocal communications

In the scientific book, sounds of frogs and toads is often said to be ‘croaking’. Whatever their musical qualities, vocalizations are conspicuous features of behavior of most frogs and toads. Acoustic signalling has a great importance in the breeding ecology of most frogs. Acoustic data are used in taxonomic studies of frogs. Thus, researchers today are very interested in studying sounds produced by anurans to know about their behavior, study their evolution, monitoring population, comparison of species and find ways for their conservation.

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In anurans, generally males are involved in bioacoustic signalling. Only a very few female and at very few times are found producing signals. Anuran vocal repertoires can be into various calls namely advertisement calls( mate calls), courtship calls( responsive calls), aggressive calls, release calls, defensive calls. These are useful in male-male and male- female communications. These sounds are also used by them to protect them from predators too. They can estimate distance between opponent and get warned.  Further, the produced sound defines the species, it’s size, it’s habitat , it’s dominance, etc in some way or other.

Advertisement calls are often referred to as mating calls and are principal signals given by males during breading season. Experiments have shown that females approach conspecific calls. Advertisement calls are often found to stimulate hormone production in females. It also expertises male’s position to other males.

The vocal behavior of male frogs often changes when females are nearby or are approaching. Courtship call are a sort of continuous trill( unlike two-note advertisement calls). These are simply increased call rates. Female courtship calls also exists. These are given in response to the calls of male, which tends to be at low intensity and therefore, are hard to hear. It enhances the ability of males and females to find each other.

Aggressive calls are produced as a sign of defence for their calling sites against conspecifics. These are often called territorial calls. Then there are release calls given when male anurans are clasped by other males. Further exists distress calls, which are generally loud screams to describe vocalisations given by frogs being attacked by predators. Alarm calls and defensive calls are to warn neighbours of danger or startle the predator, to allow victim to escape.

The pitch(determined by frequency) of sound is an indicator of anuran’s body size. The frogs with higher pitch are found to be small in size while the frogs having low-pitched calls are large and heavy. Call structure is an indicator of habitat of frogs( whether near waterfall or near stream or in forest or in open habitat). For ex: frogs living in dense forest are large in size and produce low pitched calls and vice versa. Thus, there also exists preference in calling site for different species. If male and female, both are at the same level, then high frequency components will suffer greater attenuation than low frequency components. But, if either caller or receiver is elevated, then differential loss of higher frequencies is reduced.

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Comparison of frogs living in Amazonian forests with those in floating meadow habitats revealed that forest species have significantly lower-pitched calls. The forest species generally are larger than those in open areas, and call frequency decreases with increasing body size. Calls of many species probably are not adapted for long range propagation, but for ease of localization at short distances. Phylogenetic differences probably are important as well. Forest frogs have very different call structure than open-habitat frogs. They tend to have more narrowly tuned calls with lower pulse repetition rates than open habitat frogs. Call intensity is related to factors other than habitat structure. For ex: frogs that call in open habitats tend to call in much denser choruses than those in forested habitats, and competition among males should favor the evolution of very loud calls.

Thus, understanding sounds of anurans is a very interesting part of study and researchers are working on it, striving to discover more, finding ways to conserve some endangered species( like N. sahyadrensis).