SQL Server Logon Trigger Error after server restart

I have a logon trigger running that is executing as another user to log connection details. It works totally fine without issue except right after a server reboot. At that point, I have to connect to the server via the DAC and disable it. Then I can just enable it again and everything is fine.

The error I see in the server logs says:

The connection has been dropped because the principal that opened it subsequently assumed a new security context, and then tried to reset the connection under its impersonated security context. This scenario is not supported.

I’m not sure why it would only run into this issue right after a reboot. Any idea what the issue might be?

Solving a complicated, non-polynomial dispersion relation

I am quite new to Mathematica, so I apologise if the following question is very basic; I can’t seem to find an appropriate answer anywhere!

I am trying to solve a quite complicated dispersion relation (see below) for some frequency $ \omega$ which, in general, may be complex, and is a function of the variables $ k_x$ , $ k_y$ , $ k_z$ , as well as the numerical constants $ T$ , $ B$ and $ \tau$ . I would like to be able to plot the real and imaginary parts of the solution $ \omega$ for a large range of values of $ k_x$ , $ k_y$ and $ k_z$ given the values of $ T$ , $ B$ , $ \tau$ , e.g., create a contour plot of $ \omega$ in the $ (k_x,k_y)$ plane.

When I have been tackling simpler problems of this type with Mathematica, I have been using Solve[(* dispersion relation *) ==0, [\omega]] to obtain [\omega] = [\omega][kx,ky,kz,T,B,\[tau]], which then will allow me to produce the desired output by simply plotting this function with respect to the given variables for values of $ T$ , $ B$ , etc. However, I immediately run into a problem in the more complicated case that I am considering, as Mathematica is unable to solve the dispersion relation using Solve or Reduce given its complexity, and non-polynomial nature.

What is the best way to approach this problem while keeping the solution method sufficiently general that I can still plot $ \omega$ as a function of $ k_x$ , $ k_y$ and/or $ k_z$ for various values of $ B$ , $ T$ and $ \tau$ ? From what I have gathered by searching online, an appropriate way would be to use NSolve to create a table for $ \omega$ for various values of $ k_x$ , $ k_y$ , and $ k_z$ . However, I would like to also retain the dependence numerical constants $ T$ , $ B$ and $ \tau$ , but I can’t see a good way of doing this without simply trying to use Solve, as above.

Any help would be greatly appreciated!


For completeness, the dispersion relation is as follows: \begin{align} 0=&\zeta^2\left\{k_x^2 + k_y^2 -2\left( \zeta^2 – \frac{1}{2} \right)\left[1+\zeta \mathcal{Z} – \zeta \zeta_* – \zeta_* \left( \zeta^2 – \frac{1}{2} \right) \mathcal{Z}\right]\right\} \ &- \left[ \frac{1}{2}(k_x^2 + k_y^2) – 2 \zeta_d \zeta_* \right]\left\{ 1- 2\tau\left( \zeta^2 – \frac{1}{2} \right)\left[1+\zeta \mathcal{Z} – \zeta \zeta_* – \zeta_* \left( \zeta^2 – \frac{1}{2} \right) \mathcal{Z}\right]\right\} \ &+\zeta \zeta_d \left[(k_x^2 + k_y^2)\tau -1 \right]\left\{1 – \zeta_* \mathcal{Z} +2\left( \zeta^2 – \frac{1}{2} \right)\left[1+\zeta \mathcal{Z} – \zeta \zeta_* – \zeta_* \left( \zeta^2 – \frac{1}{2} \right) \mathcal{Z}\right] \right\} \end{align} where $ $ \zeta = \frac{\omega}{2k_z}, \quad \zeta_* = \frac{k_y T}{2 k_z}, \quad \zeta_d =\frac{k_y B}{2 k_z}, $ $ with $ T$ , $ B$ and $ \tau$ simply numerical constants, while $ \mathcal{Z}$ is the plasma dispersion function $ $ \mathcal{Z}(\zeta) = \frac{1}{\sqrt{\pi}} \int \text{d}x \: \frac{e^{-x^2}}{x-\zeta}, $ $ which, in Mathematica, can be expressed, for x$ = \zeta$ , as I*Sqrt[Pi]*Exp[-x^2]*(1+I*Erfi[x]). The presence of this function is the reason that the dispersion relation is non-polynomial, and is also badly-behaved for certain values of $ \zeta$

Does dolphindb have a development plan to support embedded list as a column in a table?

is there any development plan by dolphindb to support embedded list as a column in a table ? we need something like the followings: 1. We quickly calculate the cumulative ask/bid qty according to the orderbook and save it to a column .  2. According to the provided qty , we can quickly figure out the corresponding price position on the orderbook and the distance from the price to mid .   A simple example, as shown, in this example only 5 levels in the ask volume, in practice, we have 64-128 profile price and volume.  

av1 av2 av3 av4 av5 cav
1 2 3 4 5 [1,3,6,10,15]

When adding Google Analytics 4 support to a site that already has Universal Analytics, do I need both analytics.js and gtag.js, or is gtag.js enough?

I have a website that is running the Universal Analytics (UA) version of Google Analytics. I would like to add support for Google Analytics 4.

The documentation for adding Google Analytics 4 support asks me to add a gtag.js script to my web pages. If I want to continue using UA, do I need to use both analytics.js and gtag.js, or can I just replace the analytics.js tag with gtag.js because it will be enough to supply data to both UA and GA4?

Cannot DIsplay a Snackbar Notice on Button Click – Notice is undefined

I am trying to use withSelect and withDispatch to display an admin notice when "save" button is clicked. I am using the following code from this repo but it throws an error: "notices is undefined". Here is the code I am using:

import { Icon, Button, SnackbarList } from '@wordpress/components'; import { dispatch, withSelect, withDispatch } from '@wordpress/data'; import { compose } from '@wordpress/compose'; // Display and Dispatch the notice const NewNotices = ({ notices, removeNotice }) => {          //Uncaught TypeError: notices is undefined     const snackbarNotices = notices.filter((notice) => notice.type === 'snackbar');      return (         <>             <SnackbarList                 className="cwg-admin-notices"                 notices={snackbarNotices}                 onRemove={removeNotice}             />         </>     ); }  export default compose([     withSelect((select) => ({         notices: select('core/notices').getNotices(),     })),     withDispatch((dispatch) => ({         removeNotice: dispatch('core/notices').removeNotice,     })), ])(NewNotices); 
<> //Create the notice on btn click <Button    isPrimary    onClick={() =>    {    settings.save();    dispatch('core/notices')    .createNotice(    'success',    __('Settings Saved', 'slug'),    {    type: 'snackbar',    isDismissible: true,    icon:     <Icon icon="smiley" />    }    );    }}    >    {__('Save', 'slug')} </Button> <NewNotices /> </> 

Problem when translating from LaTeX to Mathematica

I have a code in Python that makes some calculations for different reaction-diffusion equations. I am trying to let the user define the variables and parameters of the system.

The problem is that, for instance, I have tried needed to define variables with weird names like munormalform, because I don’t want to use the variable mu to avoid problems when a user needs to define that variable as a parameter of the system. What happens then is that I need to get some of these variables into Mathematica so I am saving them into .txt files in a LaTeX form.

After this, I read the file in Mathematica with no problems but, when I have a variable defined as a = "D^{4} \times munormalform" and I try to translate it into Mathematica input using b=ToExpression[a,TeXForm], I get the following output:

D^4 f l m^3 n o^2 r^2 u