نتایج جستجو برای: 17 and 4 years
تعداد نتایج: 17100285 فیلتر نتایج به سال:
Recent migration trends, fueled in part by the Nation’s love of forests, water, and other natural amenities, are altering the rural landscape. Since the late 1960s, the United States has seen both continued growth of metro populations and renewed population increase in many nonmetro counties. There has been a move toward population deconcentration, reflected both in the tendency of settlement t...
This paper outlines a project currently under way in the Linguistics Department at the University of Arizona to create electronic dictionaries of indigenous languages of the south-west USA and make them available over the Web for language instruction as well as for linguistic, psycholinguistic, and anthropological research. Working with three languages—Tohono O’odham, Navajo, and Hiaki—we have ...
This lecture deals with one of the fundamental issues encountered when constructing a system made up of independent communicating processes: dealing with time and making sure that processes do the right thing at the right time. In essence this comes down to allowing processes to synchronise and coordinate their actions. Coordination refers to coordinating the actions of separate processes relat...
In March 2014, CDC identified a possible cluster of four laboratory-confirmed measles cases among passengers transiting a domestic terminal in a U.S. international airport. Through epidemiologic assessments conducted by multiple health departments and investigation of flight itineraries by CDC, all four patients were linked to the same terminal gate during a 4-hour period on January 17, 2014. P...
در مورد رفتار ترمومکانیکی فولاد زنگ نزن 17-4 ph در حین تغییرشکل داغ گزارش های کمی وجود دارد. همچنین کاستی هایی در زمینه تغییر شکل داغ فولادها و مدل کردن منحنی های سیلان دیده می شود. در تحقیق حاضر، رفتار ترمومکانیکی این آلیاژ در حین فشار داغ ارزیابی شد و نتایج حاصل بر روی فولادهای دیگر نیز مورد آزمایش قرار گرفت. بیشتر شرایط تغییر شکل منجر به انجام تبلور مجدد دینامیکی (drx) در این فولاد شدند. در ...
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