منابع مشابه
Farming from a new perspective: remote sensing comes down to earth.
Farmers strive to increase the yield of their fields by adding nutrients and water to the land, and using pesticides to control insects and disease. In addition to bountiful harvests, the results of their endeavors may include elevated amounts of fertilizers in surface waters and aquifers and potential risk to themselves and their neighbors from exposure to pesticides. Precision agriculture is ...
متن کاملBack down to Earth
About a decade ago, systems biology hit the life sciences with the promise that it would revolutionize biological research and create new products, drugs and therapies along the way. As with so many over-hyped ‘breakthroughs’, it inevitably failed to deliver, prompting criticism from a number of eminent biologists. Nobel Prize winner Sydney Brenner, for example, accused systems biologists of us...
متن کاملBringing GRACE Down to Earth.
Introduction NASA’s Gravity Recovery and Climate Experiment (GRACE), which is a joint mission of the United States and Germany, uses a pair of coupled satellites to measure spatial and temporal changes in the Earth’s gravity field. From these data, estimates of changes (time-variable anomalies) in mass are derived. In turn, the mass changes are attributed primarily to changes in water content (...
متن کاملBlue-Sky and Down-to-Earth
We discuss how traditional methods for understanding design requirements are leveraged to produce innovative and fundamentally new perspectives when using analogy. We call these analogous practice approaches, and illustrate two cases that both use analogy to achieve exploratory design with ethnography, by gathering data from a different setting than we intend to design for. We discuss how the u...
متن کاملBringing the Sun Down to Earth
The sun is often portrayed as a “laboratory for astrophysics” but it is a laboratory over which we have no control. Instead, solar physicists employ a wide range of theoretical, computational, and observational tools to study the magnetically driven activity on the sun. The challenge for these methods is that solar physics is extremely complex, making it difficult to isolate the key drivers of ...
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ژورنال
عنوان ژورنال: Nature
سال: 1993
ISSN: 0028-0836,1476-4687
DOI: 10.1038/361014a0