Many years ago, someone showed me how to use a Luna Pro light meter to measure foot-candles. I do not recall. How do I do this?Read more
Many years ago, someone showed me how to use a Luna Pro light meter to measure foot-candles. I do not recall. How do I do this?Read more
I was kindly helped here: Power BI, DAX, Many-to-one and relational tables to produce a measure column based on this data: Builds = DATATABLE( "Build", STRING, "App", STRING, { { "Build1", "App1" }, { "Build1", "AppNotInApps1" }, { "Build1", "App2" }, { "Build1", "App9" }, { "Build2", "App3" }, { "Build2", "AppNotInApps2" }, { "Build3",Read more
Let $ (\Omega,\mathcal A)$ be a measurable space $ E$ be a $ \mathbb R$ -Banach space $ \mu:\mathcal A\to E$ with $ \mu(\emptyset)=0$ and $ $ \mu\left(\biguplus_{n\in\mathbb N}A_n\right)=\sum_{n\in\mathbb N}\mu(A_n)\tag1$ $ for all disjoint $ (A_n)_{n\in\mathbb N}\subseteq\mathcal A$ Now, let $ $ |\mu|(A):=\sup\left\{\sum_{i=1}^n\left\|\mu(A_i)\right\|_E:n\in\mathbb N\text{ and }A_1,\ldots,A_n\in\mathcal A\text{ are disjoint with }\biguplus_{i=1}^nA_i\subseteq A\right\}$ $ for $Read more
Is the support of the Brown measure of an operator always contained in the spectrum of the operator as a set? When is it equal to the spectrum?Read more
I am a physicist and I am wondering whether the following integral over Haar measure （edit: say $ U$ is unitary, orthogonal or symplectic matrix) \begin{align} \int dU \: \exp\left( \mathrm{tr}(UX) + \mathrm{tr}(X^\dagger U^\dagger) \right) \end{align} have an explicit expression in terms of the matrix X. For example, if the group is $ U(1)$ ,Read more
I want to compare two web frameworks in different languages by the amount of RAM they consume and how fast they are in general and what-not. In a nutshell, mere to have a basic idea. Say, one in Rust and one in Ruby, if this matters. How can I do that?Read more
Hi, Is there any devices reasonable priced which we can use to check the power drawn (watts/kw) of a server? As we want to check the powe… | Read the rest of http://www.webhostingtalk.com/showthread.php?t=1684453&goto=newpostRead more
Let $ X_{1},…,X_{d} \in \{-1,1\}^d$ be random variables, with $ E[X_j]=\mu_j$ . Having $ n$ i.i.d. samples $ x^{(i)}_1,x^{(i)}_2,….,x^{(i)}_d$ , $ i=1,…,n $ , let $ \hat{\mu}_{j}=\frac{1}{n}\sum^{n}_{i=1}x^{(i)}_j$ Then we would like to find an upper bound for $ \text{Pr}[|\prod^{d}_{i=1}\hat{\mu}_{j}-\prod^{d}_{i=1}\mu_{j}|\geq \epsilon]$ where $ \epsilon>0$ . We have $ \prod^{d}_{j=1}\hat{\mu}_{j}=\prod^{d}_{j=1}(\frac{1}{n}\sum^{n}_{i=1}x^{(i)}_j)=\frac{1}{n^d}\prod^{d}_{j=1}\sum^{n}_{i_j=1}x^{(i_j)}_j=\frac{1}{n^d}\sum^{n}_{i_1,…,i_d=1}\prod^{d}_{j=1}x^{(i_j)}_j$ . The random variables $ \prod^{d}_{j=1}x^{(i_j)}_j$ areRead more
I had an unusual, brief conversation with a very senior architect about dynamic and static languages. He said that company data shows that there is evidence for higher productivity when static languages are used. Note, it’s a large company with long history. To my (and others) surprise, the metric he used was lines of codeRead more