Latest news with #Chattopadhyay
Business Insider
4 days ago
- Business
- Business Insider
Mindspace Business Parks REIT (MINDSPACE) Gets a Buy from ICICI Securities
ICICI Securities analyst Adhidev Chattopadhyay maintained a Buy rating on Mindspace Business Parks REIT yesterday and set a price target of INR443.00. The company's shares closed last Tuesday at INR345.06. Elevate Your Investing Strategy: Take advantage of TipRanks Premium at 50% off! Unlock powerful investing tools, advanced data, and expert analyst insights to help you invest with confidence. Chattopadhyay covers the Real Estate sector, focusing on stocks such as Macrotech Developers Ltd., Mahindra Lifespace Developers Limited, and Mindspace Business Parks REIT. According to TipRanks, Chattopadhyay has an average return of 7.6% and a 66.67% success rate on recommended stocks. The word on The Street in general, suggests a Strong Buy analyst consensus rating for Mindspace Business Parks REIT with a INR448.00 average price target, which is a 29.83% upside from current levels. In a report released yesterday, Kotak Mahindra also maintained a Buy rating on the stock with a INR440.00 price target.
Time of India
29-07-2025
- Science
- Time of India
Did comets bring water to Earth? WHATSUP may know
1 2 3 4 Kolkata: Did comets bring water to Earth? WHATSUP may fetch the answer! Goutam Chattopadhyay, a senior scientist at NASA's Jet Propulsion Laboratory (JPL) in California, who grew up in Hooghly's Nabagram, has developed an instrument aboard a self-propelled micro-satellite to explore the mysteries of water in the solar system. The Water Hunting Advanced Terahertz Spectrometer on an Ultra-small Platform (WHATSUP) — a shoebox-sized satellite instrument — is designed to detect and analyse different forms of water in space. WHATSUP aims to help answer one of planetary science's enduring questions: Did comets bring water to Earth? "Understanding where and how water exists throughout the solar system could help identify environments potentially capable of supporting life," said Chattopadhyay. You Can Also Check: Kolkata AQI | Weather in Kolkata | Bank Holidays in Kolkata | Public Holidays in Kolkata One of the most widely accepted theories about the origin of Earth's water suggests it was delivered by water-rich asteroids and comets during the planet's early formation. These icy bodies, which formed in the colder regions of the outer solar system, contained not only water ice but also organic molecules and volatile compounds. During the heavy bombardment phase, millions of years of impacts transferred these materials to the young Earth. Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like Swelling and internal bleeding in the brain, help this baby Donate For Health Donate Now Undo by Taboola by Taboola This slow accumulation eventually provided the water that fills our oceans today. Chattopadhyay says the idea is to deploy multiple WHATSUP units as secondary payloads on future missions to Mars or other planetary bodies. Once in space, they would independently navigate toward various comets to perform high-precision, high-resolution spectroscopic measurements of different water isotopes. "In a sense, water has 'colour' — each isotope of water has a distinct spectral signature, much like how different colours of light have different frequencies. WHATSUP is designed to detect these subtle differences with exceptional accuracy. This capability could mark a major breakthrough in solving a question that fascinated scientists for decades," he explained. WHATSUP is a next-generation, ultra-compact, low-power, room-temperature submillimetre-wave spectrometer operating in the 500–600 GHz range. Designed primarily for CubeSat and SmallSat platforms, it is equally well-suited for a wide range of other space missions. What sets WHATSUP apart is its use of advanced CMOS system-on-chip electronics, an innovative low-profile, low-mass antenna, MEMS-based terahertz switching, and a novel programmable calibration load. "These cutting-edge components are integrated into a highly efficient system weighing just 2 kg and consuming less than 7 watts of power—an achievement that would have seemed impossible only a few years ago," said Chattopadhyay. The technologies developed for WHATSUP have broad applicability beyond comet missions. They can be adapted for future NASA missions to planetary and cometary bodies such as Mars, Europa, Enceladus, Venus, and Titan, as well as for Earth science and astrophysics investigations.
Time of India
13-07-2025
- Time of India
Actively engaging with students, taking steps to address their concerns after 'rape' incident: IIM-C
The Indian Institute of Management-Calcutta on Sunday said it is actively engaging with students and taking necessary steps to address their concerns in the wake of the alleged sexual assault of a woman on its campus. The woman was allegedly raped by a student of IIM-Calcutta inside a hostel on the campus, police had said on Saturday. The accused student was arrested on Saturday on the basis of an FIR lodged by the woman, he said. A court here has remanded the student to police custody till July 19. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like Play War Thunder now for free War Thunder Play Now Undo The IIM-Calcutta, however, declined to share details of the measures being undertaken, citing sensitivity of the matter and ongoing legal proceedings. "We are constantly engaging with our students internally to ensure their safety and well-being. I have instructed my team to do everything necessary to address the situation. This is my clear directive," Director-in-Charge Saibal Chattopadhyay told PTI. Live Events He said the IIM-Calcutta campus is co-educational and the recent developments have led to some apprehension among parents, which he termed as "natural" given that the institute has never faced such a situation in the past. "I cannot speak in detail about what we are doing. We will not share with the media anything more than what we have already said in our statement on Saturday, as this matter is both sensitive and sub judice," Chattopadhyay added. In its statement issued on Saturday, IIM Calcutta had said: "We are treating this matter with the utmost seriousness and are fully cooperating with the law enforcement authorities, who are currently conducting an investigation. The concerned individual has been taken into police custody, and the legal process is underway." The institute is committed to ensuring that due process is followed while safeguarding the dignity, safety, and privacy of all individuals involved, it had said. "We wish to affirm that the Indian Institute of Management-Calcutta has zero tolerance for such incidents and remains steadfast in upholding a safe and respectful campus environment," the statement added. Police have constituted a nine-member special investigation team (SIT) to probe into the alleged incident. The woman's father, however, has claimed that the reported incident did not take place.
Hindustan Times
12-07-2025
- Science
- Hindustan Times
The X factor: An Indian has cracked the code to randomness in the virtual world
Roll the dice, and the outcome could be anything between one and six. Such randomness fills our world. Step into the binary reality of computers, though, and randomness becomes a rare resource, much sought after and largely unobtainable. In the structured world of software programs, even computers tasked with generating a random result end up following a pattern of some kind. The closest they can come to true randomness is something called pseudo-randomness, where the patterns aren't easily visible and must be mined for. Why does this matter? Well, we don't see it any longer, but there are a myriad ways in which software programs try to safeguard or hide the information they hold. Sometimes they do this via a PIN or OTP. Sometimes it is through the use of authentication or access tokens. Asking a computer to be truly random when generating such safeguards is like asking a calculator to compose a poem. It simply isn't programmed to do it. In a world built on probability, could this gap ever be bridged? That is a question researchers have been asking since the late-1980s, from the Americans Gary Miller and Turing Award-winner Michael O Rabin to the Israelis Benny Chor and Oded Goldreich. A 35-year-old associate professor at Cornell University has now arrived at something of an answer. Theoretical computer scientist Eshan Chattopadhyay and his former doctoral supervisor David Zuckerman of University of Texas at Austin, have found a way to get computers to achieve something so close to true randomness as to be indistinguishable from it, by using two weak-random or pseudo-random strands of data. Their efforts won them the prestigious Godel Prize, jointly awarded by the European Association for Theoretical Computer Science and the Association for Computing Machinery, in June. 'It has been surreal, to be honest,' Chattopadhyay says. 'I had thought, at most, that I would prove something interesting or push the boundaries of computation and randomness. I hadn't expected this.' *** The 'this' is a randomness-extractor algorithm. Using no artificial intelligence, incidentally — just a lot of maths, complexity theory and information theory — the two men, over months of testing and refining their model, cracked a problem that had persisted for over 35 years. 'I would say that, in many ways, we were building on years of progress by others,' Chattopadhyay says. 'I think the main difference was that by the time we worked on it, the right tools had finally started to come together: some from cryptography, some from distributed computing, and even ideas from computational complexity.' The ramifications of their randomness-extractor algorithm are considerable. Computer programs that can come this close to generating randomness can also understand it better. This means that software of the future could build on the work of Chattopadhyay and Zuckerman to better analyse and predict variable systems ranging from the weather to gene selection, the spread of diseases, and the evolutions of large economies. In terms of cybersecurity, meanwhile, only a computer without the internet is currently completely secure, as Chattopadhyay points out. The algorithm could lead to new ways of protecting data and building safety mechanisms online. *** Chattopadhyay remembers being 13 when computers first caught his attention, in 2002. His true love at the time was cricket, he laughs. His father Buddhadeb Chattopadhyay, a metallurgist in Visakhapatnam, then 40 years old (and now 62), was keen to learn and experiment with the machines. Watching him, Chattopadhyay realised there was a world within his world that was governed by very different rules. Here was neatness, order and precision of a kind not common in life or nature. He fell in love with the math that underpinned it all and, in two years, was solving calculus problems intended for far older students. His family supported him. His mother Atrayee Chattopadhyay, a teacher, and his maternal grandmother Laxmi Dutta, who worked with the Reserve Bank of India, bought him books of puzzles. His father gave him free reign at a computer-training centre where the senior Chattopadhyay was now teaching programming languages in his spare time. At 17, Eshan Chattopadhyay set aside his math puzzles and began to focus all his energy on preparing for the Indian Institute of Technology-Joint Entrance Examination (IIT-JEE) — an exam so difficult, and taken by so many competing for so few seats, that less than 1% of those who take the test actually make it into one of these premier institutes. Chattopadhyay secured a seat at IIT-Kanpur and began his journey as a computer scientist. The math he encountered here changed his view of the world all over again. He began to understand that, just as this discipline shaped reality in elegant ways, it had the potential to reshape it. He knew by now that designing problems, solving problems and sending new math out into the world was what he wanted to do with his life. He knew he wanted to be a theoretical computer scientist. *** After graduation, he applied for a PhD at University of Texas at Austin. The early years here would be a confusing period. For the first time, he had no syllabus, no texts and no one telling him what goalpost to hit next. 'It was deeply frustrating,' he says, smiling. 'For two years, I read papers and discussed them with David, my PhD advisor. Week after week, it was hard to decide whether to delve deeper into one subject or switch to another.' He finally began to see a bigger picture. 'I started to see these gaps in the research of people that I had admired for years. I sat down with David and asked him, 'Is this what you've been trying to get me to see all along?'' Eventually, Chattopadhyay settled on a question that had obsessed Zuckerman too: How does one get a truly random result from imperfect random sources? Chattopadhyay published his thesis in 2016 and it sent ripples through the world of computing. He was offered a position at Princeton as a postdoctoral fellow and secured a Microsoft fellowship at University of California, Berkeley. Now, following the award, his wife Soubhagya Chattopadhyay, 33, an HR executive, and even his two-year-old daughter Meera are beaming with pride, he says. His father is opening up new textbooks all over again. 'He recently asked me, 'Should I try to learn this stuff or what?' and I said 'Yes, by all means',' Chattopadhyay says, laughing. He, for his part, remains obsessed with solving problems that remain unsolved or are poorly understood. It wasn't easy spending years not knowing if there was anything to find where he was looking, he admits. 'But this has taught me to stay persistent even when the path isn't clear. Sometimes, not knowing exactly where you're headed can mean you're in precisely the right place.'
Hindustan Times
28-06-2025
- Politics
- Hindustan Times
Clinching evidence on Majithia's links with drug dealers: Chattopadhyay
Former Punjab director general of police (DGP) Siddharth Chattopadhyay on Friday met the vigilance bureau (VB) team investigating the disproportionate assets case against Shiromani Akali Dal (SAD) leader Bikram Singh Majithia. During the meeting, Chattopadhyay claimed that Majithia had '100% links with drug smugglers' and stressed that there was ample evidence against him. Former Punjab DGP Siddharth Chattopadhyay arrives to join the ongoing investigation against SAD leader Bikram Singh Majithia, at the Punjab Police Officers Institute in Chandigarh on Friday. (PTI) Chattopadhyay, who served as acting DGP in December 2021 under the Charanjit Singh Channi-led government, stated that he had shared crucial information about the ongoing drug-related investigation involving Majithia, which was initiated in 2021. He claimed that the evidence against Majithia in this case was sufficient and irrefutable. Majithia was booked under Section 25 (allowing premises to be used for committing a crime), Section 27-A (financing drug-related activities), and Section 29 (criminal conspiracy) of the NDPS Act on December 20, 2021, on Chattopadhyay's orders. The former DGP, who met VB officials at officers' mess in Sector 32, Chandigarh, further revealed that the investigation had uncovered evidence linking Majithia to drug trafficking operations dating back to 2012, though he alleged that the evidence had been suppressed due to Majithia's political influence. According to Chattopadhyay, this evidence was legally admissible in court, but had been intentionally withheld for years. 'I met with the vigilance officers to provide them with key insights from the investigation. The evidence has been on file since 2012 and is irrefutable. Majithia suppressed it because of his influence, but now it will be brought to light,' Chattopadhyay said. Chattopadhyay, however, clarified that though he met vigilance officers, he had not recorded his statement or joined the investigation formally. He explained that his purpose was to provide additional context and insights into the case, specifically to help the new investigating officers understand the evidence gathered during his tenure as the DGP. 'These are young officers, and I felt it was important to guide them. The evidence is already on record, and I wanted to ensure they use it in court. Majithia has tried to suppress it for years, but now justice will be served,' said Chattopadhyay. Majithia was arrested by the VB from his Amritsar residence on Wednesday under the Prevention of Corruption Act for allegedly laundering more than ₹ 540 crore of 'drug money'. On Thursday, a Mohali court remanded him to seven-day vigilance custody. A Mohali court on Thursday sent senior Shiromani Akali Dal (SAD) leader and former minister Bikram Singh Majithia, who was arrested by the vigilance bureau from his residence in Amritsar on Wednesday Chattopadhyay's involvement in Punjab's drug investigations has not been without controversy. In December 2017, he led a special investigation team (SIT), appointed by the Punjab and Haryana high court, to probe alleged links between Moga senior superintendent of police Raj Jit Singh and Inspector Inderjit Singh in a drug trafficking case. However, Chattopadhyay's personal report on the issue was rejected by the high court, which ordered it sealed, as it exceeded the SIT's mandate. Two other members of the SIT had also raised objections to his actions. Ex-ED dy director Niranjan to also meet VB officials Former deputy director of Enforcement Directorate (ED) Niranjan Singh, who had summoned Majithia in the Bhola drug racket case, will also meet VB officials probing the case on Saturday. Niranjan had led investigations into the Jagdish Bhola synthetic drug money laundering case in 2014 and had formally summoned and questioned Majithia regarding his alleged role in the racket. Shortly after summoning Majithia, Niranjan was transferred to Kolkata in January 2015. The Punjab and Haryana high court intervened and revoked the transfer, allowing him to continue the probe.
