排序方式： 共有6条查询结果，搜索用时 453 毫秒
1
1.
针对当今的数值预报模式中存在若干与热力学第二定律不符的问题，本文着重讨论了将该定律引入数值预报模式的必要性，并通过已引入和未引入第二定律的中尺度数值模式MM5V3两者之间的对比试验来验证在数值预报模式中引进热力学第二定律的可行性。 相似文献
2.
Thorium(IV) sorption onto hematite (-Fe2O3) was examined as a function of pH and ionic strength. Sorption behaved Langmuirian over an eleven order of magnitude range in adsorption densities, : 10–12 to 10–1 moles Th sorbed per mole hematite sites, indicating that the overall free energy of Th adsorption is independent of adsorption density. Modeling of Th sorption was conducted with the Triple Layer Model of Davis and Leckie; reactions considered included solution-phase hydroxy and carbonato complexes of thorium, and carbonate/hematite surface complexes. The entire Th sorption isotherm can be modeled with a single surface complex formation reaction
|
相似文献
3.
Anastasios A. Tsonis 《水文科学杂志》2016,61(9):1591-1610
ABSTRACTThis article is a concept paper, which discusses the definition of randomness, and the sources of randomness in the mathematical system as well as in the physical system (the Universe). We document that randomness is an inherited property of mathematics and of the physical world, shaping all observed forms and structures, and we discuss its role.
Editor D. Koutsoyiannis; Guest editor E. Volpi 相似文献
4.
Time’s arrow in stochastic characterization and simulation of atmospheric and hydrological processes 总被引：1，自引：1，他引：0
Demetris Koutsoyiannis 《水文科学杂志》2019,64(9):1013-1037
5.
湿地环境政策是与湿地保护有关的环境公共政策的简称。考虑了湿地环境政策的两类不可逆性,一是旨在降低湿地破坏的环境政策对社会施加了沉没成本(suck cost);二是湿地环境的破坏可能部分或完全不可逆。将P indyck构建的不确定条件下环境政策实施时机模型,结合湿地系统特点,经修正后引入到湿地环境政策分析中,并以红树林湿地环境政策为例,探讨了不确定性和不可逆性之间的相互作用以及它们对湿地环境政策设计和政策实施时机的影响,求出了湿地环境政策被采用时的临界点。结果表明,考虑了不可逆性和不确定性的湿地环境政策,可避免传统湿地环境政策的缺陷和局限,保障其有效实施和运行,因而对近年来国家或地区层面湿地环境政策的制订有理论和实践指导意义。 相似文献
6.
Demetris Koutsoyiannis 《水文科学杂志》2020,65(4):536-551
ABSTRACTAs time irreversibility of streamflow is marked for time scales up to several days, while common stochastic generation methods are good only for time-symmetric processes, the need for new methods to handle irreversibility, particularly in flood simulations, has been recently highlighted. From an investigation of the historical evolution of existing stochastic generation methods, which is a useful step before proposing new methods, the strengths and weaknesses of current approaches are located. Following this investigation, a generic solution to the stochastic generation problem is proposed. This is an analytical exact method based on an asymmetric moving-average scheme, capable of handling time irreversibility in addition to preserving the second-order stochastic structure, as well as higher-order marginal statistics, of a process. The method is studied theoretically in its general setting, as well as in its most interesting special cases, and is successfully applied to streamflow generation at an hourly scale. 相似文献
1
|