منابع مشابه
Dry solution to a sticky problem
Sticking plasters revolutionized the protection of minor wounds, but they’re not ideal for fragile skin. A material that mimics the adhesive properties of certain beetles’ feet might provide a solution. Adhesives that stick to skin for long periods of time, or over multiple cycles of use, are vital for medical applications. Such materials have to conform to stringent standards — for example, th...
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We value possessing knowledge more than true belief. Both someone with knowledge and someone with a true belief possess the correct answer to a question. Why is knowledge more valuable than true belief if both contain the correct answer? I examine the philosophy of American pragmatist John Dewey and then I offer a novel solution to this question often called the value problem of knowledge. I pr...
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Selection favours single-celled mutants that stick together when a sugar needed for growth is in short supply, suggesting that multicellular life may have evolved as a by-product of selection for more efficient usage of resources.
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چکیده-پخش بار بهینه به عنوان یکی از ابزار زیر بنایی برای تحلیل سیستم های قدرت پیچیده ،برای مدت طولانی مورد بررسی قرار گرفته است.پخش بار بهینه توابع هدف یک سیستم قدرت از جمله تابع هزینه سوخت ،آلودگی ،تلفات را بهینه می کند،و هم زمان قیود سیستم قدرت را نیز برآورده می کند.در کلی ترین حالتopf یک مساله بهینه سازی غیر خطی ،غیر محدب،مقیاس بزرگ،و ایستا می باشد که می تواند شامل متغیرهای کنترلی پیوسته و گ...
Marine biofouling: a sticky problem.
Organisms that colonise underwater surfaces, such as barnacle larvae and spores of algae, use a diverse array of biological 'glues' to provide both temporary and more permanent adhesion. The practical consequence of colonisation by these organisms is biofouling - something that has plagued mariners for years - causing increased drag and, in extreme cases, corrosion. Might there be a biological ...
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ژورنال
عنوان ژورنال: Nature Reviews Genetics
سال: 2006
ISSN: 1471-0056,1471-0064
DOI: 10.1038/nrg1815