Most chemical reaction systems have a net positive or negative entropy change ΔS that occurs during product formation. Like the enthalpy (heat) change ΔH it is a state function, so it only depends on the total entropy values of the reactant species and product species....
Delta spreading is an options trading strategy in which the trader initially establishes a delta-neutral position by simultaneously buying and selling options in proportion to the neutral ratio (that is, the positive and negative deltas offset each other so that the overall delta of the assets in...
What combinations of positive or negative ΔH and positive or negative ΔS can indicate a spontaneous reaction? −ΔH,−ΔS +ΔH,+ΔS +ΔH,−ΔS −ΔH,+ΔS The Spontaneity of Reactions : A chemical reaction's spontaneity is determined...
skewness可以解释short-dated options的delta-hedged gains 在precrash sample里面发现,average excess return on delta-hedged portfolio是负的 delta-hedged gains for options bought immediately after a tail event are not substantially different for negative versus positive returns 得到结论:sochastic volatility wi...
an investor may buy or sell shares in the stock if they wish to keep the position neutral. This can increase the trade's volatility and costs. Delta and gamma hedging don't have to becompletely neutral, and traders may adjust how much positive or negative gamma they are exposed to over ...
-- The new round of infections started on July 20 when some airport cleaners in Nanjing, east China's Jiangsu Province, tested positive during routine testing. -- Viral genome sequencing found all the strains to be the highly infectious Delta variant and cities hit by the recent resurgence hav...
Boundary Trace of Positive Solutions of Semilinear Elliptic Equations in Lipschitz Domains: The Subcritical Case We study the generalized boundary value problem for nonnegative solutions ofof $-\\Delta u+g(u)=0$ in a bounded Lipschitz domain $\\Omega$, when $g$ iscont... M Marcus,L Veron...
What I concerned is that "the slope of GPS altitude and baro altitude" might cause ground level vary positive or negative, when GPS altitude combines baro altitude in the air, especially high in the air. Just like my video, let take a scenario for example: ...
Now. There's an additional complication which I don't address in this PR. Stable not only drops frames in the fashion described above, but alsoinserts a new framewhen the deficit turns from negative to positive. You can see this in the replay linked above: there are only 4 viable frames...
A positive value indicated the presence of illegal mining as the volume of sand extracted exceeded the allowable rate of sand extraction per year. Conversely, a negative value meant that the volume of sand extracted was acceptable as the actual volume of sand extracted per year was less than ...