Existing Nd and Hf isotopic data allow either crustal growth with no recycling of crust to mantle, or a model of constant-mass continental crust with extensive recycling. This implies that all intermediate growth plus recycling combinations are also permitted....
The mean free time 7 of copper is approximately constant, and in particular does not depend on any electric field that might be applied to a sample of the copper. Thus. we need not consider any particular value of applied electric field. However, because the resistivity p displayed by copper...
What do you mean by catalyst? What is the effect of catalyst on the rate constant of reaction? 相关知识点: 试题来源: 解析 Catalyst increases rate of reaction by lowering down the activation energy rate of reaction increases by using the catalyst.1 ...
It's lovely.- Damn straight.- And it's so big.- Well, it's a mansion, is what it is. 口语中常常听到“It is what it is”的说法。通常是带点无奈的说法,比如:That's all I got? Well...It is what it is.我就只有这些了吗?好吧……那就这样了。但是在这里,Rob和Beth夫妻俩刚刚来到豪...
y= nanmean(X,vecdim)returns the mean over the dimensions specified in the vectorvecdim. The function computes the means after removingNaNvalues. For example, ifXis a matrix, thennanmean(X,[1 2])is the mean of all non-NaNelements ofXbecause every element of a matrix is contained in the...
Q: 0 Constant: NaN AR: {NaN} at lag [1] SAR: {} MA: {} SMA: {} Seasonality: 0 Beta: [1×0] Variance: [GARCH(1,1) Model] The model output shows that agarchmodel is stored in theVarianceproperty of thearimamodel,Mdl.
Asimple linear progression Bsplit progression Cconstant progression Dderived hyperthematic progression 答案:A 6.[单选题] Which one is more coherent?(仅填A或B即可) AThe most striking example of value rigidity I can think of is the old south Indian Monkey Trap, which depends on value rigidity ...
Climate predictions are only meaningful if the associated uncertainty is reliably estimated. A standard practice is to use an ensemble of climate model projections. The main drawbacks of this approach are the fact that there is no guarantee that the ense
Root-mean-sq ware speed, v, can be calculated using the equ ation shown above, where M is the molar mas s o f a gas, R is the molar gas constant, and r is the temperature. Which o f the following e quations correctly expresses the molar mass o f a gas in terms o f root...
3.1. Section 4 contains several results on the uniform mean ergodic properties of the operators. We conclude this section with a word on notation. The notion (or equivalently ) means that there is a constant C such that holds for all z in the set of a question. We write if both and ...