منابع مشابه
Carnot Efficiency of Publication
Publications are increasingly (often wrongly) being used as research outputs. Furthermore, ‘impacts’ of such publications are often (wrongly as well) measured using ‘citations’. Popular metric, like the ‘Hirsch index’, or ‘h-index’ is used as yardstick for judging the quality of individual researchers. However, there are many controversies around it, whether it is a good yardstick, which could ...
متن کاملThe unlikely Carnot efficiency.
The efficiency of an heat engine is traditionally defined as the ratio of its average output work over its average input heat. Its highest possible value was discovered by Carnot in 1824 and is a cornerstone concept in thermodynamics. It led to the discovery of the second law and to the definition of the Kelvin temperature scale. Small-scale engines operate in the presence of highly fluctuating...
متن کاملInfluence of hardened cement paste content on the water absorption of fine recycled concrete aggregates
Influence of hardened cement paste content on the water absorption of fine recycled concrete aggregates Zengfeng Zhao a b , Sébastien Remond a b , Denis Damidot a b & Weiya Xu c a Université Lille Nord de France , Lille , France b Civil and Environmental Engineering Department , Mines Douai, LGCgE GCE , Douai , France c Geotechnical Research Institute , Hohai University , Nanjing , China Publis...
متن کاملInformatics Carnot Machine
Based on Planck's blackbody equation it is argued that a single mode light pulse, with a large number of photons, carries one entropy unit. Similarly, an empty radiation mode carries no entropy. In this case, the calculated entropy that a coded sequence of light pulses is carrying is simply the Gibbs mixing entropy, which is identical to the logical Shannon information. This approach is support...
متن کاملMolecular Carnot Cycles
We present an explicit molecular-level model of Carnot cycle based on the recently developed framework of energetics of Langevin dynamics. In the quasi-static limit, the average efficiency of energy conversion over the cycles can attain arbitrarily close value to the one predicted by thermodynamics. Account is taken for the work for connecting and disconnecting the working material to the heat ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Archéologie médiévale
سال: 2008
ISSN: 0153-9337,2608-4228
DOI: 10.4000/archeomed.21558