نتایج جستجو برای: since early of 1970s

تعداد نتایج: 21228879  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
B L Turner Marina Fischer-Kowalski

L argely unfettered by disciplinary dogma, Ester Boserup observed human–environment relationships through an expansive analytical lens. Her ideas on agricultural change, gender, and development shook up research and practice in the mid-1960s and early 1970s and remain cogent half a century later for the development dimensions of sustainability. In this 100th year since her birth, it is worthwhi...

2006
Olga Parakhina Yuri Polak

The authors share their experiences of teaching computer science at Moscow universities since early 1970s. During this period the technical basis, as well as content and methods of teaching have dramatically changed. The authors state that studying of modern information technologies promotes the creative development of students; and the best way to prepare students for further work is involving...

Journal: :Applied Mathematics and Computer Science 2013
Sergei Avdonin Abdon E. Choque Rivero Luz de Teresa

We study the exact boundary controllability of two coupled one dimensional wave equations with a control acting only in one equation. The problem is transformed into a moment problem. This framework has been used in control theory of distributed parameter systems since the classical works of A.G. Butkovsky, H.O. Fattorini and D.L. Russell in the late 1960s to the early 1970s. We use recent resu...

2004
Eliot Epstein John N. English

Widespread interest in composting as a means of municipal sludge treatment began in the early 1970s, and has i n c r e d dramatically since that time. In 1984, the U. S. Environmental Protection Agency (EPA) initiated a technology evaluation of municipal sludge composting based on investigations at five o p erating facilities.' The facilities studied generally processed sludge reliably and effe...

Journal: Iranian Economic Review 2013

Nowadays one of the most important issues in our economy, both from economic and political view is the link between monetary policy and business cycle fluctuations. Amongst the shocks related to the supply side, the shock of oil price is the important factor that has affected the world economy since the 1970s. This paper examines the effects of monetary policy and oil price shocks on the busine...

Journal: :BMJ 1989
R Smith

Since its inception in 1858 the General Medical Council has struggled with the difficult job of maintaining both public and professional interests, and many of the criticisms made of it now have been made since then. Its latest "revolution" grew out of protests mademostly by doctors-during the late 1960s and early 1970s and culminated in the Medical Act 1978. Now a new head of steam is building...

2013
Janet Mann Bernd Würsig

Behavioral research and analysis is prone to both error and bias, particularly in the early stages of a discipline, in part because it is widely (and erroneously) believed that “behavior” is rather simple and can be easily described or quantifi ed. However, since the 1970s for terrestrial animals, and since the late 1990s for marine mammals, systematic protocols of data gathering and ever more ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده علوم 1389

this research concentrates on the lithostratigraphy, biostratigraphy, microfacies and sedimentary environment of the asmari and gachsaran formations at southwest firuzabad. the thickness of the studied section in all 608.95 meters that 220.8 meters belong to the asmari formation and 387.95 meters belong to the gachsaran formation (champe and mol members). in the study area, the asmari formation...

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