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| 1 |
ID:
133352
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| Publication |
2014.
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| Summary/Abstract |
Ground troops have been spoiled for communications choices in Afghanistan and elsewhere, but communication in the jungle remain as much an art as they are a science and need regular practice. Rupert Pengelley investigates.
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| 2 |
ID:
150659
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| 3 |
ID:
119913
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| 4 |
ID:
126381
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| Publication |
2012.
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| Summary/Abstract |
Normally, it takes 20-32 seconds for a state-of-the-art GPS/GLONASS receiver to get a lock on satellites and plot location co-ordinates. Dr Vyasaraj Guru Rao, a specialist with 17 years of experience in Global Navigation Satellite System (GNSS) navigation technologies has proposed a method by means of which one is able to obtain position in eight seconds, which he says can be adopted as a part of the Indian Regional Navigation Satellite system (IRNSS) programme.
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| 5 |
ID:
125984
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| 6 |
ID:
150736
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| 7 |
ID:
137564
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| Summary/Abstract |
Thousands of years ago, agriculture began as a highly site-specific activity. The first farmers were gardeners who nurtured individual plants, and they sought out the microclimates and patches of soil that favored those plants. But as farmers acquired scientific knowledge and mechanical expertise, they enlarged their plots, using standardized approaches—plowing the soil, spreading animal manure as fertilizer, rotating the crops from year to year—to boost crop yields. Over the years, they developed better methods of preparing the soil and protecting plants from insects and, eventually, machines to reduce the labor required. Starting in the nineteenth century, scientists invented chemical pesticides and used newly discovered genetic principles to select for more productive plants. Even though these methods maximized overall productivity, they led some areas within fields to underperform. Nonetheless, yields rose to once-unimaginable levels: for some crops, they increased tenfold from the nineteenth century to the present.
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| 8 |
ID:
153821
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| 9 |
ID:
125339
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| Publication |
2013.
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| Summary/Abstract |
A number of developments and new products among unattended ground sensors (UGS) and associated surveillance systems were in evidence at the association of the US army (AUSA) exhibition in Washington DC in October.
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| 10 |
ID:
094635
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