I have a client who have a domain in another company and changed "A" records to point to my server. I tried to add this domain in cPa…  Read the rest of https://www.webhostingtalk.com/showthread.php?t=1830370&goto=newpost
Tag: point
agile – In fixedprice contracts, how can a story be “negotiable and represnt a starting point of conversation with business?
Our company paid for an agile coach, who – without knowing much about our company – went like this:
 Story should just encapsulate the value and then and clarified with the business
 Avoid detailed specs, that is not agile!
We were thinking about that but think that just cannot work in standard fixedprice and fixedscope delivery projects:
 To be able to come up with a precise estimation, even the proposal must be detailed enough
 Any unclarities must be resolved as soon as possible to prevent rework effort
I do not truly believe this “minimum story level and conversation later” works anywhere in service delivery, and the same goes for postponing design and any other decisions as late as possible. Sure, it can be done, but the rework (and cost) due to e.g. design changes might be enormous…
Why is it “not agile” to know very well upfront what you need to do? What value is in reworking and redesigning a solution (pointing to adaptability) in response to changes, when the resultant solution will not be well thoughtthrough but rather a hybrid?
microsoft powerpoint – How to remove this annoying text from power point?
I find a powerpoint on a telegram channel and I want to edit and work on that powerpoint. but there is a text on the above left of the powerpoint I try to delete this but I can’t:
I also tried this way:
And clicked on the Section Header. but the glowing line below the arrows disappeared. So how can I fix it?
eigenvalues – How to make a crosscorrelation between 2 Fisher matrices from a pure mathematical point of view?
Firstly, I want to give you a maximum of informations and precisions about my issue. If I can’t manage to get the expected results, I will launch a bounty, maybe some experts or symply people who have been already faced to a similar problem would be able to help me.
1)
I have 2 covariance matrices known $Cov_1$ and $Cov_2$ that I want to crosscorrelate. (Covariance matrix is the inverse of Fisher matrix).
I describe my approach to crosscorrelate the 2 covariance matrices (the constraints are expected to be better than the constraints infered from a “simple sum” (elements by elements) of the 2 Fisher matrices).

For this, I have performed a diagonalisation of each Fisher matrix $F_1$ and $F_2$ associated of Covariance matrices $Cov_1$ and $Cov_2$.

So, I have 2 different linear combinations of random variablethat are uncorraleted, i.e just related by eigen values ($1/sigma_i^2$) as respect of their combination.
These eigen values of diagonalising are contained into diagonal matrices $D_1$ and $D_2$.
2) I can’t build a “global” Fisher matrix directly by summing the 2 diagonal matrices since the linear combination of random variables is different between the 2 Fisher matrices.
I have eigen vectors represented by $P_1$ and $P_2$ matrices.
That’s why I think that I could perform a “global” combination of eigen vectors where I can respect the MLE (Maximum Likelihood Estimator) as each eigen value :
$$dfrac{1}{sigma_{hat{tau}}^{2}}=dfrac{1}{sigma_1^2}+dfrac{1}{sigma_2^2}quad(1)$$
because $sigma_{hat{tau}}$ corresponds to the best estimator from MLE method.
So, I thought a convenient linear combination of each eigen vectors $P_1$ and $P_2$ that could allow to achieve it would be under a new matrix P whose each column represents a new eigein global vector like this :
$$P = aP_1 + bP_2$$
3) PROBLEM: : But there too, I can’t sum eigen values under the form $D_1 + D_2$ since the new matrix $P= a.P_1 + b.P_2$ can’t have in the same time the eigen values $D_1$ and also $D_2$ eigen_values, can it ?
I mean, I wonder how to build this new diagonal matrix $D’$ such that I could write :
$$P^{1} cdot F_{1} cdot P + P^{1} cdot F_{2} cdot P=D’$$
If $a$ and $b$ could be scalars, I could for example to start from taking the relation :
$$P^{1} cdot F_{1} cdot P = a^2*D_1quad(1)$$
and $$P^{1} cdot F_{2} cdot P = b^2*D_2quad(2)$$
with $(1)$ and $(2)$ making appear the relation : $$Var(aX+bY) = a^2 Var(X) + b^2 Var(Y) + 2ab Cov(X,Y) = a^2 Var(X) + b^2 Var(Y)$$ since we are in a new basis $P$ that respect $(1)$ and $(2)$.
But the issue is that $a$ and $b$ seems to be matrices and not scalars, so I don’t know how to proceed to compute $D’$.
4) CONCLUSION :
Is this approach correct to build a new basis $P = a.P_1 + b.P_2$ and $D’ = a.a.D_1 + b.b.D_2$ assuming $a$ and $b$ are matrices ?
The key point is : if I can manage to build this new basis, I could return back to the starting space, the one of single parameters (no more combinations of them) by simply doing :
$$F_{text {cross}}=P . D’ cdot P^{1}$$ and estimate the constraints with covariance matrix : $C_{text{cross}}=F_{text {cross}}^{1}$.
If my approach seems to be correct, the most difficulty will be to determine $a$ and $b$ parameters (which is under matricial form, at least I think since with scalar form, there are too many equations compared to 2 unknown).
Sorry if there is no code for instant but I wanted to set correctly the problematic of this approach before trying to implement.
Hoping I have been clear enough.
Any help/suggestion/track/clue is welcome to solve this problem, this would be fine to tell it.
unity – Transparent objects in the scene only get lit half way by point light
I have encountered a weird graphics problem, where all of our transparent objects in the scene only get lit half way (only from the y position downward) by a point light. This happens with all of our grass and tree shaders.
Also, when looking through translucent objects, they become really desaturated and grayis which is an undesired effect.
Does anyone know how to deal with this problem? Please refer to the screenshots below.
I’m are using Unity 2020.1.14f, builtin render pipeline with a forward renderer.
For grass and trees we are using the Fantasy Adventure Environment, but all other grass shaders from other packages have the same problem.
algorithm – Given a 2D array, how do I generate a random path of fixed length from a random point at length 0 to a random point at max length?
I’m trying to generate a random path on a 2D grid given that:
 The width and height of the grid are given
 The length of the path to generate is given
 The path can’t move “back”
 The path starts from a random point at height 0 and ends at a random point at max height
 A path segment cannot “touch” with a path segment that is at its height – 1 that is not the latest generated segment of the previous height
This is what two paths generated from the parameters {Width:11, Length:17, PathLength:30} would look like:
and this is an example of a path that should not be generated:
The result of the algorithm should be a list of value pairs such as this: (8,6) in any order, which indicates the segments of the path.
I’ve been trying to solve this problem for a while, but I have problems understanding how to make this have a given length. If the given length was not a requirement I could just generate it with a nested for cycle and some rules. Please help!
visual studio 2013 – Manual debugging of SharePoint application: point does not break on new code change lines
A SharePoint solution is installed on our dev server. We are working on the new changes and unfortunately we cannot deploy and test our changes on the provided dev server. I am trying to debug manually and understand the existing application execution by attaching it to w3wp process. So I made some changes in my solution and tried debugging manually. Unfortunately the point does not break on my new code changes, it just breaks on the lines that are part of the deployed solution. Will I not be able to test my changes while debugging manually, unless the changes are deployed ?
linear algebra – 3 noncollinear points can represent every point in R2
So this is supposed to be a quite easy problem using an orthogonal base but I just can’t figure it out :(.
So Let $A,B,C in mathbb{R}^2 text{ be three noncollinear, different from each other, points}$ Show every point $Pin mathbb{R}^2$ can be represented with $p = lambda a + mu b + nu c$ with $lambda + mu + nu = 1$
The hint given by my professor was to think about orthogonal bases and orthogonal coordinate system but I just can’t wrap my head around it… It would be amazing if you would have some ideas on how to approach this ^^
air travel – What’s the point of flight ticket cancellation charges?
Imagine a world where there were no change fees, and no cancellation fees. If you bought a ticket and then changed your mind, you could just cancel or change it. In this world, tickets would not be cheaper if you bought them in advance. After all, I could buy a ticket for a year from now then change it the day I was going to fly, and the airline would have to accommodate me. They wouldn’t get a benefit from my making firm plans in advance, so they wouldn’t motivate me with money to make my plans in advance. You probably wouldn’t like this world, because all plane tickets would cost about what “I need to fly this week” plane tickets cost today, which is about 5x what you pay if you plan far enough in advance.
Now, imagine the same world with no change fees or cancellations, but with no refunds either. You buy a ticket, use it or not, we don’t care, but it’s paid for. A bit like putting a subway token in a turnstile but then not going through. You wouldn’t like this world either: plans do change and people don’t want to lose all the money they paid for a plane ticket. Travel insurance exists, but doesn’t cover everything.
So, ok, the airline is going to charge you some money to change or cancel your plans. There are two ways to establish that charge. One is “what does it cost them” which is a few pennies in IT stuff and then possibly thousands in switching to a bigger plane for the route or whatever. That’s too much of a lottery for passengers to take on. A sort of average charge of a few hundred might be fairer. But the other approach is “what will deter this behaviour?” If changes cost hundreds, you won’t book until you’re really very sure you going to do it. (Example: I book hotel rooms for events I might or might not attend, since they book up fast and can be cancelled no charge. I don’t buy the plane tickets until I know for sure I’m going.)
Then on top of that you have to think about the systemgamers. You fly once or twice a year. But there are people who fly every week. And they want to get upgraded, they want maximum status miles, they want to be home half an hour earlier than they would normally be, and all kinds of things that aren’t an option for you or don’t matter for you. They invest time and energy into gaming systems. They book three flights from A to B on the same day, so they can decide on the day which one they want and that’s cheaper than buying a last minute ticket on the day. They do “nested returns” and “hidden cities” and a ton of things you’d never do. The fees have to be robust against that kind of nonsense too.
So what this adds up to is that fees must exist, mostly to control your behaviour and make your plans firmer, so that they can plan their staff and equipment usage properly. Sometimes it seems like they would do better if they didn’t charge you that fee — but that’s because you haven’t thought about how to game that if you fly that route every single week.
dnd 5e – What is the point of origin for a square area of effect?
The spellcasting rules for areas of effect state:
A spell’s description specifies its area of effect, which typically has one of five different shapes: cone, cube, cylinder, line, or sphere. Every area of effect has a point of origin, a location from which the spell’s energy erupts. The rules for each shape specify how you position its point of origin. Typically, a point of origin is a point in space, but some spells have an area whose origin is a creature or an object.
A spell’s effect expands in straight lines from the point of origin. If no unblocked straight line extends from the point of origin to a location within the area of effect, that location isn’t included in the spell’s area. To block one of these imaginary lines, an obstruction must provide total cover.
Notably, square is not one of the shapes defined, yet there exist several spells which have a square area of effect, such as entangle or Evard’s black tentacles.
The spell grease tells us in its description:
Slick grease covers the ground in a 10foot square centered on a point within range.
But this clarification is not present in the descriptions of entangle and Evard’s black tentacles.
So what is the point of origin of a square area of effect when it is not specified in the spell description?