Deepak Ray
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Articles by Deepak Ray
Global arable land redistribution toward the tropics and drylands under human settlement expansion
Abstract Arable land extent has undergone widespread changes across many regions worldwide through processes such as urban encroachment, forest conversion to agriculture, and dryland farming expansion. Yet an integrated understanding of global arable land dynamics remains limited.
A global open-source dataset of monthly irrigated and rainfed cropped areas (MIRCA-OS) for the 21st century - Scientific Data
Abstract Crop production is among the most extensive human activities on the planet – with critical importance for global food security, land use, environmental burden, and climate. Yet despite the key role that croplands play in global land use and Earth systems, there remains little understanding of how spatial patterns of global crop cultivation have recently evolved and which crops have contributed most to these changes.
Next-Generation Wireless Communication: Exploring the Potential of 5G and Beyond in Enabling Ultra-Reliable Low Latency Communications for IOT and Autonomous Systems | International Journal of Communication Networks and Information Security (IJCNIS)
International Journal of Communication Networks and Information Security(IJCNIS) is a scholarly peer-reviewed international scientific journal published four times (March, June, September, December) in a year, focusing on theories, methods, and applications in networks and information security.
Greenhouse gas emissions in US beef production can be reduced by up to 30% with the adoption of selected mitigation measures - Nature Food
Abstract Greenhouse gas (GHG) emissions from beef production in the United States are unevenly distributed across the supply chain and production regions, complicating where and how to reduce emissions most effectively. Using spatially explicit life cycle assessment methods, we quantify the baseline GHG emissions and mitigation opportunities of 42 practices spanning the supply chain from crop and livestock production to processing.
Spatial Distribution of Cropping Systems in South Asia Using Time-Series Satellite Data Enriched with Ground Data
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
Assessing and addressing the global state of food production data scarcity - Nature Reviews Earth & Environment Original
Abstract Food production data — such as crop, livestock, aquaculture and fisheries statistics — are critical to achieving multiple sustainable development goals. However, the lack of reliable, regularly collected, accessible, usable and spatially disaggregated statistics limits an accurate picture of the state of food production in many countries and prevents the implementation of effective food system interventions.
Global spatially explicit yield gap time trends reveal regions at risk of future crop yield stagnation - Nature Food
Abstract Yield gaps, here defined as the difference between actual and attainable yields, provide a framework for assessing opportunities to increase agricultural productivity. Previous global assessments, centred on a single year, were unable to identify temporal variation. Here we provide a spatially and temporally comprehensive analysis of yield gaps for ten major crops from 1975 to 2010.
Advanced lifting wavelet transform and V‐degree polynomial‐based channel estimation in MIMO‐GFDM
CONFLICT OF INTEREST STATEMENT The authors declare that they have no conflict of interest. REFERENCES 1, , . High spectral efficiency and low error rate MIMO-GFDM for next-generation communication systems. IEEE Trans Vehic Technol. 2021; 71(1): 503-517. doi:10.1109/TVT.2021.3127912 2, , . Low-complexity MU-MIMO-GFDM joint receivers. Int J Electron. 2022; 18: 1-22. 3. Orthogonal versus novel orthogonal pulse shaped waveforms for future generation wireless communication systems.
A shrinking fraction of the world's major crops goes to feed the hungry, with more used for nonfood purposes
Deepak Ray, University of Minnesota March 6, 2023 (The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Deepak Ray, University of Minnesota (THE CONVERSATION) Rising competition for many of the world’s important crops is sending increasing amounts toward uses other than directly feeding people.
Increased probability of hot and dry weather extremes during the growing season threatens global crop yields - Scientific Reports
Abstract Although extreme weather events recur periodically everywhere, the impacts of their simultaneous occurrence on crop yields are globally unknown. In this study, we estimate the impacts of combined hot and dry extremes as well as cold and wet extremes on maize, rice, soybean, and wheat yields using gridded weather data and reported crop yield data at the global scale for 1980–2009.
Most Cropland Isn't Used for Direct Food Consumption
More than 750 million people faced hunger in 2021, yet more and more of the crops the world harvests are being used for things other than directly feeding people. A recent analysis shows that only 37% of the harvested area of major crops are used for direct food consumption — that is, crops used for foods that are produced and consumed domestically.
Opinion: Non-food crops eating up our food
Published: Published Date - 12:30 AM, Wed - 28 September 22 By Deepak K Ray It’s sometimes bandied about that enough food is grown globally to feed everyone now and into the future. Undernourishment is ‘just a distribution challenge’. And it’s mostly true: enough kilojoules do and will be harvested in just the top ten global crops, which account for more than 80% of all calories. We will grow an extra 14,000 trillion kilocalories (around 59,000 trillion kilojoules) by 2030.
Non-food crops are eating up our food
It’s sometimes bandied about that enough food is grown globally to feed everyone now and into the future. Undernourishment is ‘just a distribution challenge’. And it’s mostly true: enough kilojoules do and will be harvested in just the top ten global crops, which account for more than 80 percent of all calories. We will grow an extra 14,000 trillion kilocalories (around 59,000 trillion kilojoules) by 2030.
Non-food crops are eating up our food
Saint Paul (US), Sep 26 (360info) The world’s farmers grow crops for food as well as other uses. Those other uses threaten to crowd out our chance to feed the world’s hungry. It’s sometimes bandied about that enough food is grown globally to feed everyone now and into the future. Undernourishment is ‘just a distribution challenge’. And it’s mostly true: enough kilojoules do and will be harvested in just the top ten global crops, which account for more than 80 percent of all calories.
Even a small nuclear war threatens food security - Nature Food
Nuclear weapons obliterate targets. The soot ejected into the stratosphere spreads, changing global weather patterns. When weapons are especially high yielding, the resultant soot could trigger global famine. About 66 million years ago, roughly three-quarters of all species on Earth died when a 10–15-km-diameter asteroid travelling at 72,000 km h−1 struck at Chicxulub, Mexico1. Sulfates and soot lofted high in the atmosphere, cutting off sunlight.
A shrinking fraction of the world’s major crops goes to feed the hungry
Rising competition for many of the world’s important crops is sending increasing amounts toward uses other than directly feeding people. These competing uses include making biofuels; converting crops into processing ingredients, such as livestock meal, hydrogenated oils and starches; and selling them on global markets to countries that can afford to pay for them.
Too many crops aren’t used to feed people
Rising competition for many of the world’s important crops is sending increasing amounts toward uses other than directly feeding people. These competing uses include making biofuels; converting crops into processing ingredients, such as livestock meal, hydrogenated oils and starches; and selling them on global markets to countries that can afford to pay for them. In… You must be a subscriber to read this content. To keep reading and receive unlimited access subscribe today for only $1.
Global hunger can worsen by 2030. Growing food in Asia and Africa can solve it
Rising competition for many of the world’s important crops is sending increasing amounts toward uses other than directly feeding people. These competing uses include making biofuels; converting crops into processing ingredients, such as livestock meal, hydrogenated oils and starches; and selling them on global markets to countries that can afford to pay for them.
Essay: A shrinking fraction of the world’s major crops goes to feed the hungry, with more used for non-food purposes
20 May 2022 DEEPAK RAY Rising competition for many of the world’s important crops is sending increasing amounts toward uses other than directly feeding people. These competing uses include making biofuels; converting crops into processing ingredients, such as livestock meal, hydrogenated oils and starches; and selling them on global markets to countries that can afford to pay for them.
A shrinking fraction of the world’s major crops goes to feed the hungry, with more used for nonfood purposes
Rising competition for many of the world’s important crops is sending increasing amounts toward uses other than directly feeding people. These competing uses include making biofuels; converting crops into processing ingredients, such as livestock meal, hydrogenated oils and starches; and selling them on global markets to countries that can afford to pay for them.
A shrinking fraction of the world’s major crops goes to feed the hungry, with more used for nonfood purposes
Rising competition for many of the world’s important crops is sending increasing amounts toward uses other than directly feeding people. These competing uses include making biofuels; converting crops into processing ingredients, such as livestock meal, hydrogenated oils and starches; and selling them on global markets to countries that can afford to pay for them.
A shrinking fraction of the world’s major crops goes to feed the hungry – commentary – New Hampshire Bulletin
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Opinion | Growing foods to feed the hungry
Rising competition for many of the world’s important crops is sending increasing amounts toward uses other than directly feeding people. These competing uses include making biofuels; converting crops into processing ingredients, such as livestock meal, hydrogenated oils and starches; and selling them on global markets to countries that can afford to pay for them.
A shrinking fraction of the world's major crops goes to feed the hungry, with more used for nonfood purposes
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A shrinking fraction of the world's major crops goes to feed the hungry, with more used for nonfood purposes
(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) kAmW%wt r~}'t#$p%x~}Xk^Am kAm#:D:?8 4@>A6E:E:@? 7@C >2?J @7 E96 H@C=5’D :>A@CE2?E 4C@AD :D D6?5:?8 :?4C62D:?8 2>@F?ED E@H2C5 FD6D @E96C E92? 5:C64E=J 7665:?8 A6@A=6] %96D6 4@>A6E:?8 FD6D :?4=F56 >2<:?8 3:@7F6=Dj 4@?G6CE:?8 4C@AD :?E@ AC@46DD:?8 :?8C65:6?ED[ DF49 2D =:G6DE@4< >62=[ 9J5C@86?2E65 @:=D 2?5 DE2C496Dj 2?5 D6==:?8 E96> @? 8=@32= >2C<6ED E@ 4@F?EC:6D E92E 42?
A shrinking fraction of the world's major crops goes to feed the hungry, with more used for nonfood purposes
Rising competition for many of the world’s important crops is sending increasing amounts toward uses other than directly feeding people. These competing uses include making biofuels; converting crops into processing ingredients, such as livestock meal, hydrogenated oils and starches; and selling them on global markets to countries that can afford to pay for them.
Crop harvests for direct food use insufficient to meet the UN’s food security goal - Nature Food
Abstract Rising competition for crop usage presents policy challenges exacerbated by poor understanding of where crops are harvested for various uses. Here we create high-resolution global maps showing where crops are harvested for seven broad use categories—food, feed, processing, export, industrial, seed and losses. Yields for food crops are low relative to other crop-use categories.
Management strategies and outcomes in renal transplant recipients recovering from COVID-19: A retrospective, multicentre, cohort study
Summary Background There is an enormous knowledge gap on management strategies, clinical outcomes, and follow-up after kidney transplantation (KT) in recipients that have recovered from coronavirus disease (COVID-19). Methods We conducted a multi-center, retrospective analysis in 23 Indian transplant centres between June 26, 2020 to December 1, 2021 on KT recipients who recovered after COVID-19 infections.
Recent patterns of crop yield growth and stagnation
Abstract In the coming decades, continued population growth, rising meat and dairy consumption and expanding biofuel use will dramatically increase the pressure on global agriculture. Even as we face these future burdens, there have been scattered reports of yield stagnation in the world’s major cereal crops, including maize, rice and wheat. Here we study data from ∼2.5 million census observations across the globe extending over the period 1961–2008.
Climate adaptation by crop migration - Nature Communications
Data preparation Average growing season temperatures are calculated by summing average daily temperature values for each day of the growing season and dividing by the length of the growing season. Growing seasons are defined differently for each crop using global, gridded maps of crop-specific planting and harvesting dates (day of year) from Sacks et al. (ref. 58), provided at the 5 arc minute resolution.
Climate change likely already affecting global food production « Global Aquaculture Advocate
Monday, 26 August 2019 Deepak K. Ray, Ph.D. Paul C. West, Ph.D. Michael Clark, Ph.D. James S. Gerber, Ph.D. Alexander V. Prishchepov, Ph.D. Snigdhansu Chatterjee, Ph.D. Impact resulted in about 1% reduction in food calories for 10 main crops Study of weather and reported crop data to assess the potential impact of observed climate change on the yields of the top 10 global crops shows that climate change has already affected global food production.
3 Places Rice Yields Recently Declined
By Deepak Ray, Senior Scientist, Institute on the Environment at the University of Minnesota Rice makes up one out of every five calories eaten around the world. It’s a major food staple for billions of people, and as populations grow, yields of major crops like rice will need to increase in order to feed everyone without further expansion of agricultural land.
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