نتایج جستجو برای: since early 1990s
تعداد نتایج: 1142770 فیلتر نتایج به سال:
Abstract The Amazon Basin, the largest watershed on Earth, experienced a significant increase in wet-season precipitation and high-season river discharge from early 1990s to 2010s. Some studies have linked increased Basin hydrologic cycle decadal trends of Pacific trade winds, eastern sea surface temperature (SST) cooling, associated strengthening Walker circulation. However, it has been diffic...
since the 1960s the age effects on learning both first and second language have been explored by many linguists and applied linguists (e.g lennerberg, 1967; schachter, 1996; long, 1990) and the existence of critical period for language acquisition was found to be a common ground of all these studies. in spite of some common findings, some issues about the impacts of age on acquiring a second or...
Decadal variations in summer drought events during 1956–2005 are examined over Eastern China to identify their leading variability modes and their linkages to the Pacific Decadal Oscillation (PDO), Atlantic Multi-decadal Oscillation (AMO), and global warming. The PDO influence is found to dominate China drought frequency from the 1960s to early 1990s via modulating the Western Pacific Subtropic...
The photoacoustic (PA) effect, also called the optoacoustic was discovered in 1880s by Alexander Graham Bell and has been utilized for biomedical imaging sensing applications since early 1990s [...]
The labor force participation rates of men and women aged 62-79 have notably increased since the mid-1990s. The result is a dramatic increase in the share of total money income attributable to earnings. For persons aged 65-69, the earnings share of total income increased from 28 percent in 1980 to 42 percent in 2009. For this age group in the late 1980s and early 1990s, Social Security benefits...
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