منابع مشابه
The status and challenge of global fire modelling
Biomass burning impacts vegetation dynamics, biogeochemical cycling, atmospheric chemistry, and climate, with sometimes deleterious socio-economic impacts. Under future climate projections it is often expected that the risk of wildfires will increase. Our ability to predict the magnitude and geographic pattern of future fire impacts rests on our ability to model fire regimes, using either well-...
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Is psychology a scientifi c discipline of its own? Or is it the case, as Scott (1991) upheld, that “Psychology lacks a clear identity”? The latter is certainly the impression one gets reading Ludin (1979), who, in his opus titled “Theories and Systems of Psychology”, describes the emergence of psychology over the 20th century with retrospectively comical words that would perhaps best be used to...
متن کاملThe Wildland Fire Challenge: Protecting Communities and Restoring Ecosystems
The wildland fire crisis Virtually every North American ecosystem has experienced fire over its evolutionary history. In regions such as subalpine forests where precipitation was high and temperatures low, fire was an infrequent visitor; periodic drought and hot weather were required to dry vegetation enough to burn. Between infrequent fires, fuels built up naturally to high levels, ensuring th...
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
romantic education:reading william wordsworths the prelude in the light of the history of ideas
عصر روشنگری زمان شکل گیری ایده های مدرن تربیتی- آموزشی بود اما تاکید بیش از اندازه ی دوشاخه مهم فلسفی زمان یعنی عقل گرایی و حس گرایی بر دقت و وضوح، انسان عصر روشنگری را نسبت به دیگر تواناییهایش نابینا کرده و موجب به وجود آمدن افرادی تک بعدی شد که افتخارعقلانیتشان، تاکید شان بر تجربه فردی، به مبارزه طلبیدن منطق نیاکانشان وافسون زدایی شان از دنیا وتمام آنچه با حواس پنجگانه قابل درک نبوده و یا در ...
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ژورنال
عنوان ژورنال: BMJ
سال: 1990
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.300.6726.696