Month: May 2024
MATLAB installation error on linux PC
I’m trying to install MATLAB 2024a on my linuw PC (ubuntu version 20.04.6) as root. I followed the instrutions for linux OS that are provided on the MATLAB website. However I’m getting the following error
munmap_chunk(): invalid pointer
AbortedI’m trying to install MATLAB 2024a on my linuw PC (ubuntu version 20.04.6) as root. I followed the instrutions for linux OS that are provided on the MATLAB website. However I’m getting the following error
munmap_chunk(): invalid pointer
Aborted I’m trying to install MATLAB 2024a on my linuw PC (ubuntu version 20.04.6) as root. I followed the instrutions for linux OS that are provided on the MATLAB website. However I’m getting the following error
munmap_chunk(): invalid pointer
Aborted installation, error, linux MATLAB Answers — New Questions
hyperpca applied to a set of several hyperspectral images
I am trying to perform the PCA of several hyperspectral images.
I want to make one PCA with the entire set of images, not one PCA per image. To do this I run into several problems.
The first problem is that the data takes up a large amount of memory and the hyperpca function does not accept using tall arrays. Matlab’s PCA function does allow me to work with tall arrays but I don’t know how to perform a PCA for a three-dimensional array.
The second is that if I have to carry out the PCA of each of the images individually, how can I combine the PCAs?
If anyone can give me a hand I would appreciate it.I am trying to perform the PCA of several hyperspectral images.
I want to make one PCA with the entire set of images, not one PCA per image. To do this I run into several problems.
The first problem is that the data takes up a large amount of memory and the hyperpca function does not accept using tall arrays. Matlab’s PCA function does allow me to work with tall arrays but I don’t know how to perform a PCA for a three-dimensional array.
The second is that if I have to carry out the PCA of each of the images individually, how can I combine the PCAs?
If anyone can give me a hand I would appreciate it. I am trying to perform the PCA of several hyperspectral images.
I want to make one PCA with the entire set of images, not one PCA per image. To do this I run into several problems.
The first problem is that the data takes up a large amount of memory and the hyperpca function does not accept using tall arrays. Matlab’s PCA function does allow me to work with tall arrays but I don’t know how to perform a PCA for a three-dimensional array.
The second is that if I have to carry out the PCA of each of the images individually, how can I combine the PCAs?
If anyone can give me a hand I would appreciate it. hyperpca MATLAB Answers — New Questions
Error when using (self created) library block in a model
I have created a block in a library.
This block works (correct / expected behavior) when I try it in library directly.
But when I import the block in a model, I got error: parameter callback errors.
The block behavior is to modify its content (remove or add block inside) according to parameter values.
It can works in model if i cut the link to the library, but after I got lot of warning from advisor …I have created a block in a library.
This block works (correct / expected behavior) when I try it in library directly.
But when I import the block in a model, I got error: parameter callback errors.
The block behavior is to modify its content (remove or add block inside) according to parameter values.
It can works in model if i cut the link to the library, but after I got lot of warning from advisor … I have created a block in a library.
This block works (correct / expected behavior) when I try it in library directly.
But when I import the block in a model, I got error: parameter callback errors.
The block behavior is to modify its content (remove or add block inside) according to parameter values.
It can works in model if i cut the link to the library, but after I got lot of warning from advisor … library, block, callback MATLAB Answers — New Questions
R2023a for MacBook m1 sonoma 14.5 is crash
matlab r2023a is crash in my macbook air m1,my system version is sonoma14.5,but is amazing if i don’t close the window of crashreporter,the app is still runningmatlab r2023a is crash in my macbook air m1,my system version is sonoma14.5,but is amazing if i don’t close the window of crashreporter,the app is still running matlab r2023a is crash in my macbook air m1,my system version is sonoma14.5,but is amazing if i don’t close the window of crashreporter,the app is still running crash matlab macbook sonoma MATLAB Answers — New Questions
Find the linear Equation at different conditions – Machine Learning
I have a table of data that looks like this:
All data in the image are given here:
At different flowrate, there is a unique linear equation. What I want is to input the flowrate (for example, at 6.45 standard L/min), and get a linear equation at this flowrate.
Which maths/machine learning tool should I use, please? Thanks in advanceI have a table of data that looks like this:
All data in the image are given here:
At different flowrate, there is a unique linear equation. What I want is to input the flowrate (for example, at 6.45 standard L/min), and get a linear equation at this flowrate.
Which maths/machine learning tool should I use, please? Thanks in advance I have a table of data that looks like this:
All data in the image are given here:
At different flowrate, there is a unique linear equation. What I want is to input the flowrate (for example, at 6.45 standard L/min), and get a linear equation at this flowrate.
Which maths/machine learning tool should I use, please? Thanks in advance machine learning MATLAB Answers — New Questions
dsp.UDPReceiver shuts down MatLab
Hi
My MatLab (2019b) crashes when trying run the following lines:
hudpr = dsp.UDPReceiver(‘LocalIPPort’, 5010);
dataReceived= step(hudpr);
However, it runs without crashing in MatLab2013a.
Any suggestion to why it crashes?
Thanks
MarkusHi
My MatLab (2019b) crashes when trying run the following lines:
hudpr = dsp.UDPReceiver(‘LocalIPPort’, 5010);
dataReceived= step(hudpr);
However, it runs without crashing in MatLab2013a.
Any suggestion to why it crashes?
Thanks
Markus Hi
My MatLab (2019b) crashes when trying run the following lines:
hudpr = dsp.UDPReceiver(‘LocalIPPort’, 5010);
dataReceived= step(hudpr);
However, it runs without crashing in MatLab2013a.
Any suggestion to why it crashes?
Thanks
Markus udp MATLAB Answers — New Questions
Unable to import camera parameters or intrinsics to Simulink simulation
Hi, I have a CameraParameters struct in my workspace, but I am unable to import it into Simulink to use with AprilTag identification and similar. I have tried using the constant block, or the "From Workspace" block but neither is able to compile if I set the value to CameraParams, or CameraParams.Intrinsics (CameraParams is just the variable I have defined). Any help would be hugely appreciated.
Thank you!
The error using a From Workspace block is this:
Unsupported input format for From Workspace block ‘SimulinkEnv/From Workspace’. Input data must use a supported format such as timeseries or timetable and must not contain Inf or NaN values.
The error using a constant is this:
Invalid setting in ‘SimulinkEnv/Constant3’ for parameter ‘Value’Hi, I have a CameraParameters struct in my workspace, but I am unable to import it into Simulink to use with AprilTag identification and similar. I have tried using the constant block, or the "From Workspace" block but neither is able to compile if I set the value to CameraParams, or CameraParams.Intrinsics (CameraParams is just the variable I have defined). Any help would be hugely appreciated.
Thank you!
The error using a From Workspace block is this:
Unsupported input format for From Workspace block ‘SimulinkEnv/From Workspace’. Input data must use a supported format such as timeseries or timetable and must not contain Inf or NaN values.
The error using a constant is this:
Invalid setting in ‘SimulinkEnv/Constant3’ for parameter ‘Value’ Hi, I have a CameraParameters struct in my workspace, but I am unable to import it into Simulink to use with AprilTag identification and similar. I have tried using the constant block, or the "From Workspace" block but neither is able to compile if I set the value to CameraParams, or CameraParams.Intrinsics (CameraParams is just the variable I have defined). Any help would be hugely appreciated.
Thank you!
The error using a From Workspace block is this:
Unsupported input format for From Workspace block ‘SimulinkEnv/From Workspace’. Input data must use a supported format such as timeseries or timetable and must not contain Inf or NaN values.
The error using a constant is this:
Invalid setting in ‘SimulinkEnv/Constant3’ for parameter ‘Value’ simulink, computer vision, april tag, camera MATLAB Answers — New Questions
Use of Fmincon for stress relax data
I have to use "fmincon" to solve the optimization problem for the fitting of an "Stress Relaxation" curve. My aim is to define the coefficient of the Prony Series (gamma_i & tau_i).
The problem is that i don’t know how to define my function and start the fitting in order to find e1,e2,e3 & tau1,tau2,tau3.
In Input i have the experimental data (stress relax) and time
fun= E0 * (1 – ( (e1*(1-exp(-t/tau1))) + (e2*(1-exp(-t/tau2))) + (e3*(1-exp(-t/tau3)))))I have to use "fmincon" to solve the optimization problem for the fitting of an "Stress Relaxation" curve. My aim is to define the coefficient of the Prony Series (gamma_i & tau_i).
The problem is that i don’t know how to define my function and start the fitting in order to find e1,e2,e3 & tau1,tau2,tau3.
In Input i have the experimental data (stress relax) and time
fun= E0 * (1 – ( (e1*(1-exp(-t/tau1))) + (e2*(1-exp(-t/tau2))) + (e3*(1-exp(-t/tau3))))) I have to use "fmincon" to solve the optimization problem for the fitting of an "Stress Relaxation" curve. My aim is to define the coefficient of the Prony Series (gamma_i & tau_i).
The problem is that i don’t know how to define my function and start the fitting in order to find e1,e2,e3 & tau1,tau2,tau3.
In Input i have the experimental data (stress relax) and time
fun= E0 * (1 – ( (e1*(1-exp(-t/tau1))) + (e2*(1-exp(-t/tau2))) + (e3*(1-exp(-t/tau3))))) fmincon, optimization, prony MATLAB Answers — New Questions
Is/will Copilot in Teams able to follow/process shared content in Teams Meetings?
My team frequently uses Teams meetings for code reviews and discussions to share screen and view each other’s work. Is Copilot in Teams able to see/process shared content along with spoken audio to provide a wholistic summary of meeting content? This may also be useful in the case of shared files or live collaboration on M365 files like Word documents or PowerPoint presentations.
My team frequently uses Teams meetings for code reviews and discussions to share screen and view each other’s work. Is Copilot in Teams able to see/process shared content along with spoken audio to provide a wholistic summary of meeting content? This may also be useful in the case of shared files or live collaboration on M365 files like Word documents or PowerPoint presentations. Read More
How to pull data from multiple workbooks
I am trying to pull data from the same cell in multiple work sheets. All these files are labeled by date. There is a file for every day of the year. These files are massive with lots of data and can not be combined. The master where I would like to pull data and store here to use as a template to measure performance. This has a row for every single day and displays the average, max, and low.
I would like to match the row to match the file on where to pull the data from. Is there any way to do this without going back and forth between worksheets? I would like to continue to use this template year after year.
I am trying to pull data from the same cell in multiple work sheets. All these files are labeled by date. There is a file for every day of the year. These files are massive with lots of data and can not be combined. The master where I would like to pull data and store here to use as a template to measure performance. This has a row for every single day and displays the average, max, and low.I would like to match the row to match the file on where to pull the data from. Is there any way to do this without going back and forth between worksheets? I would like to continue to use this template year after year. Read More
Move files to specific directories based on file modified by date.
Hi All,
I’m trying to make sense of 1000’s of photos and I’m looking for something a little different to the year – month standard option.
I’m trying to sort my pictures between specific dates for instance.
For example:
Pics from between 05-01-2000 & 04-02-2000 to be moved to directory ‘Year 1Month 0’
Pics from between 05-02-2000 & 04-03-2000 to be moved to directory ‘Year 1Month 1’
Pics from between 05-03-2000 & 04-04-2000 to be moved to directory ‘Year 1Month 2’
Pics from between 05-04-2000 & 04-05-2000 to be moved to directory ‘Year 1Month 3’
From searching i have found the following script
CmdletBinding(SupportsShouldProcess=$true)]
param (
[Parameter(Mandatory=$true)][string]$SourceDirectory,
[Parameter(Mandatory=$true)][string]$DestinationDirectory,
[Parameter(Mandatory=$true)][string]$ModifiedAfter,
[Parameter(Mandatory=$true)][string]$ModifiedBefore
)
Get-ChildItem -Path $SourceDirectory |
Where-Object {
$_.LastWriteTime `
-gt (Get-Date $ModifiedAfter) `
-and $_.LastWriteTime -lt (Get-Date $ModifiedBefore) } |
ForEach-Object { $_ | Copy-Item -Destination $DestinationDirectory }
You then run it with
.Copy-Files-Modified-Between-Dates `
-SourceDirectory C:Tempall `
-DestinationDirectory C:Tempsubset `
-ModifiedAfter ‘2000-01-05 18:00’ `
-ModifiedBefore ‘2000-02-04’
My question is how can this be made to increment onto the next month automatically or to reference a file for info maybe a csv or text file to say
Pics from between 05-04-2010 & 04-05-2010 to be moved to directory ‘Year 10Month 3’
Hi All,I’m trying to make sense of 1000’s of photos and I’m looking for something a little different to the year – month standard option.I’m trying to sort my pictures between specific dates for instance.For example:Pics from between 05-01-2000 & 04-02-2000 to be moved to directory ‘Year 1Month 0’Pics from between 05-02-2000 & 04-03-2000 to be moved to directory ‘Year 1Month 1’Pics from between 05-03-2000 & 04-04-2000 to be moved to directory ‘Year 1Month 2’Pics from between 05-04-2000 & 04-05-2000 to be moved to directory ‘Year 1Month 3’From searching i have found the following script CmdletBinding(SupportsShouldProcess=$true)]
param (
[Parameter(Mandatory=$true)][string]$SourceDirectory,
[Parameter(Mandatory=$true)][string]$DestinationDirectory,
[Parameter(Mandatory=$true)][string]$ModifiedAfter,
[Parameter(Mandatory=$true)][string]$ModifiedBefore
)
Get-ChildItem -Path $SourceDirectory |
Where-Object {
$_.LastWriteTime `
-gt (Get-Date $ModifiedAfter) `
-and $_.LastWriteTime -lt (Get-Date $ModifiedBefore) } |
ForEach-Object { $_ | Copy-Item -Destination $DestinationDirectory } You then run it with .Copy-Files-Modified-Between-Dates `
-SourceDirectory C:Tempall `
-DestinationDirectory C:Tempsubset `
-ModifiedAfter ‘2000-01-05 18:00’ `
-ModifiedBefore ‘2000-02-04’ My question is how can this be made to increment onto the next month automatically or to reference a file for info maybe a csv or text file to sayPics from between 05-04-2010 & 04-05-2010 to be moved to directory ‘Year 10Month 3’ Read More
Announcing Windows Server Preview Build 26227
Announcing Windows Server Preview Build 26227
Hello Windows Server Insiders!
Today we are pleased to release a new build of the next Windows Server Long-Term Servicing Channel (LTSC) Preview that contains both the Desktop Experience and Server Core installation options for Datacenter and Standard editions, Annual Channel for Container Host and Azure Edition (for VM evaluation only). Branding has been updated for the upcoming release, Windows Server 2025, in this preview – when reporting issues please refer to Windows Server 2025 preview. If you signed up for Server Flighting, you should receive this new build automatically.
What’s New
[NEW] Delegated Managed Service Accounts (dMSA)
A new account type known as delegated Managed Service Account (dMSA) is now available that allows migration from a traditional service account to a machine account with managed and fully randomized keys, while disabling original service account passwords.
Authentication for dMSA is linked to the device identity, which means that only specified machine identities mapped in AD can access the account. Using dMSA helps to prevent harvesting credentials using a compromised account (kerberoasting), which is a common issue with traditional service accounts.
To learn more about dMSA, visit https://learn.microsoft.com/en-us/windows-server/security/delegated-managed-service-accounts/delegated-managed-service-accounts-overview.
More Server Message Block (SMB) protocol changes.
Starting with Build 26097 and higher, we are introducing the following Server Message Block (SMB) protocol changes for QUIC, signing, and encryption:
SMB over QUIC client and server disable: Administrators can now disable the SMB over QUIC client and SMB over QUIC server options with Group Policy and PowerShell.
SMB over QUIC client and server connection auditing: Successful SMB over QUIC client and SMB over QUIC server connection events are now written to the event log to include the QUIC transport.
SMB signing and encryption auditing: Administrators can now enable auditing of the SMB server and client for support of SMB signing and encryption. This shows if a third-party client or server doesn’t support SMB encryption or signing. You can configure these settings with PowerShell and Group Policy.
For details on configuring these new settings, review https://aka.ms/SMB74MDNP.
For more information on SMB over QUIC in Windows and Windows Server Insider Preview builds, review https://aka.ms/SMBoverQUICServer and https://aka.ms/SmbOverQuicCAC.
For more information on SMB signing and encryption in Windows and Windows Server Insider Preview builds, review https://aka.ms/SmbSigningRequired and https://aka.ms/SmbClientEncrypt.
Windows Server Flighting is here!!
If you signed up for Server Flighting, you should receive this new build automatically later today.
For more information, see Welcome to Windows Insider flighting on Windows Server – Microsoft Community Hub
The new Feedback Hub app is now available for Server Desktop users!
The app should automatically update with the latest version, but if it does not, simply Check for updates in the app’s settings tab.
Known Issues
[NEW] Secure-boot Gen2 VMs created using ISO media may not boot: Some users may encounter boot issues when creating secure-boot Gen 2 VMs. Disabling secure-boot allows the Gen2 VM to boot successfully. This will be addressed in a future release.
Upgrade does not complete: Some users may experience an issue when upgrading where the download process does not progress beyond 0%. If you encounter this issue, please upgrade to this newer build using the ISO media download option. Download Windows Server Insider Preview (microsoft.com)
Access denied error when using Diskpart –> Clean Image on Winpe.vhdx VMs created using WinPE: Create bootable media | Microsoft Learn. We are working to resolve this issue and expect to have it fixed in the next preview release.
Download Windows Server Insider Preview (microsoft.com)
Flighting: The label for this flight may incorrectly reference Windows 11. However, when selected, the package installed is the Windows Server update. Please ignore the label and proceed with installing your flight. This issue will be addressed in a future release.
Setup: Some users may experience overlapping rectangle voids following mouse clicks during “OOBE” setup. This is a graphics rendering issue and will not prevent setup from completing. This issue will be addressed in a future release.
WinPE – Powershell Scripts: Applying the WinPE-Powershell optional component does not properly install Powershell in WinPE. As a result, Powershell cmdlets will fail. Customers who are dependent on Powershell in WinPE should not use this build.
If you are validating upgrades from Windows Server 2019 or 2022, we do not recommend that you use this build as intermittent upgrade failures have been identified for this build.
This build has an issue where archiving eventlogs with “wevetutil al” command causes the Windows Event Log service to crash, and the archive operation to fail. The service must be restarted by executing “Start-Service EventLog” from an administrative command line prompt.
If you have Secure Launch/DRTM code path enabled, we do not recommend that you install this build.
Available Downloads
Downloads to certain countries may not be available. See Microsoft suspends new sales in Russia – Microsoft On the Issues
Windows Server Long-Term Servicing Channel Preview in ISO format in 18 languages, and in VHDX format in English only.
Windows Server Datacenter Azure Edition Preview in ISO and VHDX format, English only.
Microsoft Server Languages and Optional Features Preview
Keys: Keys are valid for preview builds only
Server Standard: MFY9F-XBN2F-TYFMP-CCV49-RMYVH
Datacenter: 2KNJJ-33Y9H-2GXGX-KMQWH-G6H67
Azure Edition does not accept a key
Symbols: available on the public symbol server – see Using the Microsoft Symbol Server.
Expiration: This Windows Server Preview will expire September 15, 2024.
How to Download
Registered Insiders may navigate directly to the Windows Server Insider Preview download page. If you have not yet registered as an Insider, see GETTING STARTED WITH SERVER on the Windows Insiders for Business portal.
We value your feedback!
The most important part of the release cycle is to hear what’s working and what needs to be improved, so your feedback is extremely valued. Beginning with Insider build 26063, please use the new Feedback Hub app for Windows Server if you are running a Desktop version of Server. If you are using a Core edition, or if you are unable to use the Feedback Hub app, you can use your registered Windows 10 or Windows 11 Insider device and use the Feedback Hub application. In the app, choose the Windows Server category and then the appropriate subcategory for your feedback. In the title of the Feedback, please indicate the build number you are providing feedback on as shown below to ensure that your issue is attributed to the right version:
[Server #####] Title of my feedback
See Give Feedback on Windows Server via Feedback Hub for specifics. The Windows Server Insiders space on the Microsoft Tech Communities supports preview builds of the next version of Windows Server. Use the forum to collaborate, share and learn from experts. For versions that have been released to general availability in market, try the Windows Server for IT Pro forum or contact Support for Business.
Diagnostic and Usage Information
Microsoft collects this information over the internet to help keep Windows secure and up to date, troubleshoot problems, and make product improvements. Microsoft server operating systems can be configured to turn diagnostic data off, send Required diagnostic data, or send Optional diagnostic data. During previews, Microsoft asks that you change the default setting to Optional to provide the best automatic feedback and help us improve the final product.
Administrators can change the level of information collection through Settings. For details, see http://aka.ms/winserverdata. Also see the Microsoft Privacy Statement.
Terms of Use
This is pre-release software – it is provided for use “as-is” and is not supported in production environments. Users are responsible for installing any updates that may be made available from Windows Update. All pre-release software made available to you via the Windows Server Insider program is governed by the Insider Terms of Use.
Announcing Windows Server Preview Build 26227
Hello Windows Server Insiders!
Today we are pleased to release a new build of the next Windows Server Long-Term Servicing Channel (LTSC) Preview that contains both the Desktop Experience and Server Core installation options for Datacenter and Standard editions, Annual Channel for Container Host and Azure Edition (for VM evaluation only). Branding has been updated for the upcoming release, Windows Server 2025, in this preview – when reporting issues please refer to Windows Server 2025 preview. If you signed up for Server Flighting, you should receive this new build automatically.
What’s New
[NEW] Delegated Managed Service Accounts (dMSA)
A new account type known as delegated Managed Service Account (dMSA) is now available that allows migration from a traditional service account to a machine account with managed and fully randomized keys, while disabling original service account passwords.
Authentication for dMSA is linked to the device identity, which means that only specified machine identities mapped in AD can access the account. Using dMSA helps to prevent harvesting credentials using a compromised account (kerberoasting), which is a common issue with traditional service accounts.
To learn more about dMSA, visit https://learn.microsoft.com/en-us/windows-server/security/delegated-managed-service-accounts/delegated-managed-service-accounts-overview.
More Server Message Block (SMB) protocol changes.
Starting with Build 26097 and higher, we are introducing the following Server Message Block (SMB) protocol changes for QUIC, signing, and encryption:
SMB over QUIC client and server disable: Administrators can now disable the SMB over QUIC client and SMB over QUIC server options with Group Policy and PowerShell.
SMB over QUIC client and server connection auditing: Successful SMB over QUIC client and SMB over QUIC server connection events are now written to the event log to include the QUIC transport.
SMB signing and encryption auditing: Administrators can now enable auditing of the SMB server and client for support of SMB signing and encryption. This shows if a third-party client or server doesn’t support SMB encryption or signing. You can configure these settings with PowerShell and Group Policy.
For details on configuring these new settings, review https://aka.ms/SMB74MDNP.
For more information on SMB over QUIC in Windows and Windows Server Insider Preview builds, review https://aka.ms/SMBoverQUICServer and https://aka.ms/SmbOverQuicCAC.
For more information on SMB signing and encryption in Windows and Windows Server Insider Preview builds, review https://aka.ms/SmbSigningRequired and https://aka.ms/SmbClientEncrypt.
Windows Server Flighting is here!!
If you signed up for Server Flighting, you should receive this new build automatically later today.
For more information, see Welcome to Windows Insider flighting on Windows Server – Microsoft Community Hub
The new Feedback Hub app is now available for Server Desktop users!
The app should automatically update with the latest version, but if it does not, simply Check for updates in the app’s settings tab.
Known Issues
[NEW] Secure-boot Gen2 VMs created using ISO media may not boot: Some users may encounter boot issues when creating secure-boot Gen 2 VMs. Disabling secure-boot allows the Gen2 VM to boot successfully. This will be addressed in a future release.
Upgrade does not complete: Some users may experience an issue when upgrading where the download process does not progress beyond 0%. If you encounter this issue, please upgrade to this newer build using the ISO media download option. Download Windows Server Insider Preview (microsoft.com)
Access denied error when using Diskpart –> Clean Image on Winpe.vhdx VMs created using WinPE: Create bootable media | Microsoft Learn. We are working to resolve this issue and expect to have it fixed in the next preview release.
Download Windows Server Insider Preview (microsoft.com)
Flighting: The label for this flight may incorrectly reference Windows 11. However, when selected, the package installed is the Windows Server update. Please ignore the label and proceed with installing your flight. This issue will be addressed in a future release.
Setup: Some users may experience overlapping rectangle voids following mouse clicks during “OOBE” setup. This is a graphics rendering issue and will not prevent setup from completing. This issue will be addressed in a future release.
WinPE – Powershell Scripts: Applying the WinPE-Powershell optional component does not properly install Powershell in WinPE. As a result, Powershell cmdlets will fail. Customers who are dependent on Powershell in WinPE should not use this build.
If you are validating upgrades from Windows Server 2019 or 2022, we do not recommend that you use this build as intermittent upgrade failures have been identified for this build.
This build has an issue where archiving eventlogs with “wevetutil al” command causes the Windows Event Log service to crash, and the archive operation to fail. The service must be restarted by executing “Start-Service EventLog” from an administrative command line prompt.
If you have Secure Launch/DRTM code path enabled, we do not recommend that you install this build.
Available Downloads
Downloads to certain countries may not be available. See Microsoft suspends new sales in Russia – Microsoft On the Issues
Windows Server Long-Term Servicing Channel Preview in ISO format in 18 languages, and in VHDX format in English only.
Windows Server Datacenter Azure Edition Preview in ISO and VHDX format, English only.
Microsoft Server Languages and Optional Features Preview
Keys: Keys are valid for preview builds only
Server Standard: MFY9F-XBN2F-TYFMP-CCV49-RMYVH
Datacenter: 2KNJJ-33Y9H-2GXGX-KMQWH-G6H67
Azure Edition does not accept a key
Symbols: available on the public symbol server – see Using the Microsoft Symbol Server.
Expiration: This Windows Server Preview will expire September 15, 2024.
How to Download
Registered Insiders may navigate directly to the Windows Server Insider Preview download page. If you have not yet registered as an Insider, see GETTING STARTED WITH SERVER on the Windows Insiders for Business portal.
We value your feedback!
The most important part of the release cycle is to hear what’s working and what needs to be improved, so your feedback is extremely valued. Beginning with Insider build 26063, please use the new Feedback Hub app for Windows Server if you are running a Desktop version of Server. If you are using a Core edition, or if you are unable to use the Feedback Hub app, you can use your registered Windows 10 or Windows 11 Insider device and use the Feedback Hub application. In the app, choose the Windows Server category and then the appropriate subcategory for your feedback. In the title of the Feedback, please indicate the build number you are providing feedback on as shown below to ensure that your issue is attributed to the right version:
[Server #####] Title of my feedback
See Give Feedback on Windows Server via Feedback Hub for specifics. The Windows Server Insiders space on the Microsoft Tech Communities supports preview builds of the next version of Windows Server. Use the forum to collaborate, share and learn from experts. For versions that have been released to general availability in market, try the Windows Server for IT Pro forum or contact Support for Business.
Diagnostic and Usage Information
Microsoft collects this information over the internet to help keep Windows secure and up to date, troubleshoot problems, and make product improvements. Microsoft server operating systems can be configured to turn diagnostic data off, send Required diagnostic data, or send Optional diagnostic data. During previews, Microsoft asks that you change the default setting to Optional to provide the best automatic feedback and help us improve the final product.
Administrators can change the level of information collection through Settings. For details, see http://aka.ms/winserverdata. Also see the Microsoft Privacy Statement.
Terms of Use
This is pre-release software – it is provided for use “as-is” and is not supported in production environments. Users are responsible for installing any updates that may be made available from Windows Update. All pre-release software made available to you via the Windows Server Insider program is governed by the Insider Terms of Use. Read More
Demystifying Microsoft Entra ID, Tenants and Azure Subscriptions
Introduction
As a startup or an new customer exploring Microsoft Azure, you may find the terminology around identity and access management a bit perplexing. Terms like Tenant, Subscription, and Microsoft Entra ID, are crucial to understanding how to effectively manage and secure your Azure environment. This blog post aims to demystify these concepts and provide a clear, concise understanding of how they interrelate.
What is Microsoft Entra ID (Former Azure Active Directory)?
Microsoft Entra ID is the new name for Azure Active Directory (AAD), Microsoft’s cloud-based identity and access management service. It plays a crucial role in managing user, group, and application access to Azure services. Here’s a breakdown:
Identity Management: Entra ID handles both authentication (verifying identity) and authorization (granting access) for Azure resources.
Cloud-Based: Unlike traditional Active Directory, which is designed for on-premises environments, Entra ID operates entirely in the cloud, making it ideal for modern, cloud-first organizations.
Key Features:
User and Group Management: You can create users and groups within your Entra ID tenant. These identities can be synchronized with your existing on-premises Active Directory using Entra Connect.
Single Sign-On (SSO): Provides a seamless sign-on experience across multiple applications and services.
What is an Azure Tenant?
An Azure Tenant represents a dedicated instance of Microsoft Entra ID for your organization. It is essentially your organization’s space in the Azure cloud where you manage your identities and access.
Key Points:
Created Automatically: When you sign up for Azure or any Microsoft cloud service, a tenant is automatically created.
Domain Representation: By default, your tenant will have a domain like yourcompany.onmicrosoft.com, which can be customized to use your own domain. (You can also add and replace your on.microsoft.com fallback domain)
What is an Azure Subscription?
An Azure Subscription is a logical container used to provision and manage Azure resources. It is closely tied to billing and acts as a boundary for resource management and deployment.
Key Characteristics:
Resource Management: All Azure resources (e.g., virtual machines, databases) are associated with a subscription.
Billing: Each subscription has its own billing cycle and payment terms, allowing you to manage costs effectively.
Scalability: Best practice is to have separate subscriptions for production and non-production environments to manage permissions and scalability efficiently.
Relation to Tenant:
A single Azure tenant can manage multiple subscriptions, but each subscription is associated with only one tenant.
How They Work Together
Automatic Creation of Emtra ID Tenant:
When you create an Azure subscription, an Entra ID tenant is automatically provisioned. This tenant manages identities and access within your subscription.
Authentication and Authorization:
Azure subscriptions rely on Entra ID to authenticate and authorize users, services, and devices, ensuring that only authenticated identities can access Azure resources.
Role-Based Access Control (RBAC):
Azure Roles: Used for managing access to Azure resources within a subscription. Examples include Owner, Contributor, and Reader. Custom roles can also be created for more granular control. See here some best practices for Azure RBAC
Entra Roles (Former AAD Roles): Specific to managing Entra ID resources, such as Global Administrator and User Administrator. See here how Entra Roles and Azure Roles are related.
Multi-Subscription Management:
A single Entra ID tenant can manage multiple subscriptions, enabling the same set of users and groups to access different environments. However, each subscription is associated with only one tenant.
Practical Tips for Startups
Benefit from the Azure setup Guide:
Before you start building and deploying solutions by using Azure services, you need to prepare your environment. In this guide, we introduce features that help you organize resources, control costs, and secure and manage your organization. You can access it directly from the Azure Portal too.
Start with a Clear Structure:
Separate Subscriptions: Use separate subscriptions for production and non-production environments to ensure better management and segregation of resources.
Define Roles: Clearly define and assign Azure Roles and Entra ID Roles to manage permissions effectively.
Synchronize Identities:
If you have an existing on-premises AD, use Entra Connect to synchronize identities with Entra ID, ensuring seamless access management.
Plan for Scalability:
Design your subscription architecture to accommodate growth. Consider factors like billing, resource limits, and administrative boundaries.
Use Enterprise Scale Landing Zones:
Implement recommended modular design to ensure your Azure environment can scale efficiently with your business needs.
Follow the links below if you are familiar with AWS and would like to understand how to map AWS concepts to Azure:
Azure and AWS accounts and subscriptions
Mapping AWS IAM concepts to similar ones in Azure
Azure for AWS professionals
Conclusion
Understanding Microsoft Entra ID, Azure Subscriptions, and Tenants is essential for effective Azure governance. These concepts form the backbone of identity and access management in Azure, ensuring secure, scalable, and efficient management of your cloud resources. As your startup grows, mastering these basics will help you optimize your Azure environment, supporting your journey towards innovation and success.
For more detailed information, always refer to the latest Microsoft Azure documentation and best practices.
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Azure SQL DB standby replica is now generally available | Data Exposed
Learn more about enabling disaster recovery for Azure SQL Database at a lower cost using standby replica which does not incur license costs. Standby replica is Generally Available (GA).
Resources:
Configure a license-free standby replica (preview) for Azure SQL Database
General Availability of license-free standby replica for Azure SQL database
Azure SQL DB license-free standby replica
Azure SQL DB High Availability & Disaster Recovery overview
View/share our latest episodes on Microsoft Learn and YouTube!
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Windows news you can use: May 2024
With so much going on this month, let’s get you caught up on how Windows 11 management and security improved. We’ll jump into what you need to know as an IT admin or decision maker to get ahead of your competition. In line with our Microsoft Secure Future Initiative,[1] the latest features, capabilities, services, and tools prioritize security above all else. And remember, keeping your Windows environment updated helps you keep it protected.
New in Windows security
[INTUNE] Automatically check for Windows device health with device enrollment attestation in Microsoft Intune (now in preview). Help ensure that device enrollment certificates are bound to the enrolled device and can’t be copied to any other device.
[PASSKEYS] Take your next steps toward passwordless authentication with Public preview: Expanding passkey support in Microsoft Entra ID. A passkey is a strong, phishing-resistant authentication method that your organization can use to sign in to any internet resource that supports the W3C WebAuthN standard. Start here to enable passkeys in Microsoft Authenticator for Microsoft Entra ID (preview).
[DNS] With Zero Trust DNS (ZTDNS) in private preview, you’ll soon be able to natively restrict Windows devices to connect only to approved network destinations by domain name. It will block the local network peer-to-peer sharing of Windows updates, so consider using Microsoft Connected Cache (in preview) or Windows Server Update Services (WSUS) to reduce Windows Update traffic volume. You can easily activate, deactivate, and manage ZTDNS through mobile device management (MDM). See Deployment Considerations for Windows ZTDNS Client to learn how to prepare for this new level of security across related functions of printing, file sharing, teleconferencing, and more.
[DEVELOPER] If you develop apps and services for Windows, catch up on the latest from Microsoft Build with The Latest in Windows Security for Developers and Unleash Windows App Security & Reputation with Trusted Signing. Additionally, make sure your skills are up to date with our Windows security for developers skilling snack.
Looking for a recap of the latest and upcoming Windows 11 security features? Check out New Windows 11 features strengthen security to address evolving cyberthreat landscape.
New in device management
[WINDOWS 11] Try the updated Windows 11 setup guide. Access it from the Microsoft 365 admin center or from our online Windows setup guides repository.
[INTUNE] This month, you can use Microsoft Intune to allow people at your organization to check for and install the latest Windows 11 feature updates as optional updates. See how in More flexible Windows feature updates.
[AUTOPILOT] Set Windows Autopilot device preparation policies to simplify device enrollment and deployment. In the Microsoft Intune admin center, go to Devices > Enrollment > Device preparation policies. Learn how to add devices to groups, assign policies and scripts, improve reporting, and more in Windows deployment with the next generation of Windows Autopilot.
[AZURE WORKBOOKS] Troubleshoot your Windows Update for Business reports with a new DeviceDiagnosticDataNotReceived alert to identify any devices that might appear missing upon enrollment. Start in portal.azure.com and navigate to Monitor > Workbooks > Insights. Open the Windows Update for Business workbook > Overview > Total devices > View details > Missing devices. Find further guidance in Missing devices in Windows Update for Business reports.
[AUTOPATCH] Starting May 27, check out new features available in Windows Autopatch. Set your service level objectives to keep at least 95% of your devices up to date. If needed, import Microsoft Intune update rings for Windows 10 and later updates into Windows Autopatch. Finally, notice more timely and accurate reporting with the faster refresh time of just 30 minutes and service synchronization every 1 hour.
[AUTOPATCH] Get a list of all Windows Autopatch policy conflicts along with affected devices and follow recommended actions. From Microsoft Intune admin center, go to Devices > Policy health (preview).
[AUTOPATCH] Try the new post-update reliability report. Go to the Microsoft Intune admin center and navigate to Reports > Windows Autopatch > Windows quality updates. Select the Reports tab and then the Reliability report.
[INTUNE] Check out a new Windows update distribution report for devices managed (or co-managed) by Microsoft Intune. Access this feature from the Intune admin center. Navigate to Reports > Windows Updates > Reports tab > Windows Update Distribution Report.
[BYOD] If you allow people at your organization to manage their own PCs, tell them about these enhancements, which require authentication of their Microsoft account. Authenticated users within your organization can now manage their Windows 11 Pro PCs from a new location: Settings > Accounts > Linked devices. Additionally, there’s a new account manager available from the Start menu. Employees can easily manage their account settings and explore account benefits right there. Furthermore, two new actions are available from Windows account settings: add a recovery email address and back up sound preferences. Authenticated users can also take advantage of the Windows Backup app. Keep an eye out for these features as they gradually roll out, starting with the May 2024 non-security preview update.
New in Copilot
[COPILOT IN WINDOWS] Get ready to manage Copilot as a standalone application. As this change rolls out, you’ll be able to manage the Copilot app using the same familiar tools that you use to manage modern apps more broadly in your organization, such as Microsoft Intune. We intend to remove the current policies that manage Copilot in Windows (in preview) in the coming months. Learn about the details of this transition in Evolving Copilot in Windows for your workforce.
[COPILOT+ PCs] Plan to refresh your organizational devices with new Copilot+ PCs. These new Windows 11 devices have the most advanced security features. Additionally, Copilot+ PCs include a new physical key that invokes Copilot along with many AI features out of the box.
[RECALL] A new Windows 11 productivity feature, Recall, is included in Copilot+ PCs. Users can search through the snapshot history of their computing sessions, securely saved on their local drive, in two ways. These include an explorable timeline and a semantic search box. Just check that devices in your organization have 256 GB or more of total drive space and at least 50 GB free to use Recall. Learn how to Manage Recall for Windows clients to enable or disable Recall via MDM, policies, or Windows Settings > Privacy & Security > Recall & Snapshots. Then help other people at your organization configure Privacy and control over your Recall experience.
New in Windows Server
[SERVER 2025] Download and Preview Windows Server 2025, including VSS developer and IT communities, from the Microsoft Evaluation Center. Try and validate the Desktop Experience and Server Core installation options for Datacenter and Standard editions. If you hold Visual Studio Subscriptions, access the Windows Server 2025 preview software through Subscriber Downloads. Learn more about the features coming in Windows Server 2025.
[AZURE] If you’re a Windows Server Insider, you can now preview Windows Server 2025 Datacenter: Azure Edition.
[HOTPATCH] If you use Azure for Windows Server and have installed the April baseline, apply the May 14, 2024 hotpatch without restarting devices. Consult Release notes for Hotpatch in Azure Automanage for Windows Server 2022.
New in productivity and collaboration
[WINDOWS 11] Get ready for the upcoming annual feature update by trying Windows 11, version 24H2 in the Release Preview Channel of the Windows Insider Program. If you’re on this channel, download this feature update from Settings > Windows Update. You can also let some of the people at your organization validate this update using Windows Update for Business and Windows Server Update Services.
[FILE EXPLORER] To manage your files faster, just drag and drop them onto any of the breadcrumbs of the File Explorer address bar. Try it out in the May 2024 non-security preview update before it rolls out for your users with the June 2024 security update[2]. And if you’re on the Windows Insider Program’s Beta Channel, duplicate any tab by right clicking on it and check out new file compression and decompression options.
[SHARING] If you’re a Windows Insider in the Canary Channel or have installed the May 2024 non-security preview update, check out two new capabilities for sharing in Windows. Use it to quickly share files, URLs, and email yourself across devices and apps within your Microsoft account. Just ensure that you’re signed in to your organization’s Microsoft Entra ID[2]. To share URLs and cloud files as QR codes, select the share button in the Microsoft Edge toolbar and choose “Windows share options.” For Windows Insiders in the Beta Channel, you can now copy files from the Windows Share window.
Remember, you’re not just keeping your organization protected; you’re shaping its future. Catch you at the next “Windows news you can use” installment—stay curious!
Continue the conversation. Find best practices. Bookmark the Windows Tech Community, then follow us @MSWindowsITPro on X/Twitter. Looking for support? Visit Windows on Microsoft Q&A.
[1] Learn more about the Microsoft Secure Future Initiative.
[2] This feature might not be available to all users because it will roll out gradually.
Microsoft Tech Community – Latest Blogs –Read More
Visually similar pcbstack objects resulting in different S parameter responses
Hi Mathworks community,
For the last couple of days I have been playing around with the antenna toolbox. I ran into a strange phenomenon when calculating the S parameters for an antenna configuration.
In my simulation, I am trying to take an antenna design and change the top layer to a parameterized version so that I can optimize the shape of the antenna. I added the pcbStack object describing the original antenna design in the attachment. The following code shows the steps I take to replace the top layer with the parameterized version:
clear all
close all
clc
% load the original antenna design
load("simplified_antenna.mat")
p.FeedViaModel = "octagon";
antenna_0 = p;
% define the parameterized version of the top layer
start = [7.74,8.73]*10^-3;
a = 0.999*10^-3;
b = 2.53*10^-3;
c = 4.1*10^-3;
d = 3.13*10^-3;
e = 1.4*10^-3;
f = 6*10^-3;
g = 1.3*10^-3;
h = 0.5*10^-3;
R = 0.35*10^-3;
ant1 = antenna.Rectangle( Length=g+h,Width=a, center=start+[-(g+h)/2,+a/2]);
ant2 = antenna.Rectangle( Length=h,Width=f+a, center=start+[-g-h/2,(a+f)/2]);
ant3 = antenna.Rectangle( Length=e,Width=a, center=start+[-g-h-e/2,a/2]);
ant4 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,a/2]);
ant5 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-c+a/2,b/2]);
ant6 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b-a/2]);
ant7 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-a/2,b-a+b/2]);
ant8 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b+b-a*1.5]);
ant9 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-c+a/2,b+b-a-a+b/2]);
ant10 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b+b+b-a*2.5]);
ant11 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-a/2,b+b+b-a-a-a+b/2]);
ant12 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b+b+b+b-a*3.5]);
ant13 = antenna.Rectangle( Length=a,Width=d, center=start+[-g-h-e-c+a/2,b+b+b+b-a-a-a-a+d/2]);
ant14 = antenna.Circle(center=start+[-g-h/2,f+a], Radius=R);
Newobj = ant1+ant2+ant3+ant4+ant5+ant6+ant7+ant8+ant9+ant10+ant11+ant12+ant13+ant14;
% check if the parameterized and original version are the same:
figure
show(p.Layers{1,2})
title("Original top layer")
figure
show(Newobj)
title("Parameterized top layer")
% calculate the S parameters
spar_0 = sparameters(antenna_0, (2:0.1:4)*10^9);
figure
rfplot(spar_0);
title("S parameter original design")
antenna_1 = antenna_0;
antenna_1.Layers{1,2}.Vertices = Newobj.Vertices;
spar_1 = sparameters(antenna_1, (2:0.1:4)*10^9);
figure
rfplot(spar_1);
title("S parameter parameterized version 1")
antenna_2 = antenna_0;
antenna_2.Layers{1,2} = Newobj;
spar_2 = sparameters(antenna_2, (2:0.1:4)*10^9);
figure
rfplot(spar_2);
title("S parameter parameterized version 2")
To make sure that the parameterization is correct, I take two steps. First I check if the original and paramterized version look the same. The result is as follows and shows a nearly similar polygon:
After this, I calculate the S parameters of the resulting antenna design. This is where the strange phenomenon occurs. As the code shows, I add the parameterized top layer to the antenna design in two different ways: antenna_1.Layers{1,2}.Vertices = Newobj.Vertices; and antenna_2.Layers{1,2} = Newobj;. The resulting pcbStack objects are identical but give a significantly different simulation result as shown below:
My question is: How can these two simulations (version 1 and version 2) be significantly different even though the pcbStack objects corresponding to these two simulations are identical. On top of this, how do I know which of the two is the correct simulation. Am I missing a crucial difference between the two antennas designs?
My guess is that something is wrong with antenna design version 2 since the S parameter behaviour differs so much from the original antenna design’s S parameter behaviour. It is very unlikely that this huge difference is caused by the minimal difference between the original toplayer and parameterized top layer definitions.
Best regards,
Richard EveleensHi Mathworks community,
For the last couple of days I have been playing around with the antenna toolbox. I ran into a strange phenomenon when calculating the S parameters for an antenna configuration.
In my simulation, I am trying to take an antenna design and change the top layer to a parameterized version so that I can optimize the shape of the antenna. I added the pcbStack object describing the original antenna design in the attachment. The following code shows the steps I take to replace the top layer with the parameterized version:
clear all
close all
clc
% load the original antenna design
load("simplified_antenna.mat")
p.FeedViaModel = "octagon";
antenna_0 = p;
% define the parameterized version of the top layer
start = [7.74,8.73]*10^-3;
a = 0.999*10^-3;
b = 2.53*10^-3;
c = 4.1*10^-3;
d = 3.13*10^-3;
e = 1.4*10^-3;
f = 6*10^-3;
g = 1.3*10^-3;
h = 0.5*10^-3;
R = 0.35*10^-3;
ant1 = antenna.Rectangle( Length=g+h,Width=a, center=start+[-(g+h)/2,+a/2]);
ant2 = antenna.Rectangle( Length=h,Width=f+a, center=start+[-g-h/2,(a+f)/2]);
ant3 = antenna.Rectangle( Length=e,Width=a, center=start+[-g-h-e/2,a/2]);
ant4 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,a/2]);
ant5 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-c+a/2,b/2]);
ant6 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b-a/2]);
ant7 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-a/2,b-a+b/2]);
ant8 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b+b-a*1.5]);
ant9 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-c+a/2,b+b-a-a+b/2]);
ant10 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b+b+b-a*2.5]);
ant11 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-a/2,b+b+b-a-a-a+b/2]);
ant12 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b+b+b+b-a*3.5]);
ant13 = antenna.Rectangle( Length=a,Width=d, center=start+[-g-h-e-c+a/2,b+b+b+b-a-a-a-a+d/2]);
ant14 = antenna.Circle(center=start+[-g-h/2,f+a], Radius=R);
Newobj = ant1+ant2+ant3+ant4+ant5+ant6+ant7+ant8+ant9+ant10+ant11+ant12+ant13+ant14;
% check if the parameterized and original version are the same:
figure
show(p.Layers{1,2})
title("Original top layer")
figure
show(Newobj)
title("Parameterized top layer")
% calculate the S parameters
spar_0 = sparameters(antenna_0, (2:0.1:4)*10^9);
figure
rfplot(spar_0);
title("S parameter original design")
antenna_1 = antenna_0;
antenna_1.Layers{1,2}.Vertices = Newobj.Vertices;
spar_1 = sparameters(antenna_1, (2:0.1:4)*10^9);
figure
rfplot(spar_1);
title("S parameter parameterized version 1")
antenna_2 = antenna_0;
antenna_2.Layers{1,2} = Newobj;
spar_2 = sparameters(antenna_2, (2:0.1:4)*10^9);
figure
rfplot(spar_2);
title("S parameter parameterized version 2")
To make sure that the parameterization is correct, I take two steps. First I check if the original and paramterized version look the same. The result is as follows and shows a nearly similar polygon:
After this, I calculate the S parameters of the resulting antenna design. This is where the strange phenomenon occurs. As the code shows, I add the parameterized top layer to the antenna design in two different ways: antenna_1.Layers{1,2}.Vertices = Newobj.Vertices; and antenna_2.Layers{1,2} = Newobj;. The resulting pcbStack objects are identical but give a significantly different simulation result as shown below:
My question is: How can these two simulations (version 1 and version 2) be significantly different even though the pcbStack objects corresponding to these two simulations are identical. On top of this, how do I know which of the two is the correct simulation. Am I missing a crucial difference between the two antennas designs?
My guess is that something is wrong with antenna design version 2 since the S parameter behaviour differs so much from the original antenna design’s S parameter behaviour. It is very unlikely that this huge difference is caused by the minimal difference between the original toplayer and parameterized top layer definitions.
Best regards,
Richard Eveleens Hi Mathworks community,
For the last couple of days I have been playing around with the antenna toolbox. I ran into a strange phenomenon when calculating the S parameters for an antenna configuration.
In my simulation, I am trying to take an antenna design and change the top layer to a parameterized version so that I can optimize the shape of the antenna. I added the pcbStack object describing the original antenna design in the attachment. The following code shows the steps I take to replace the top layer with the parameterized version:
clear all
close all
clc
% load the original antenna design
load("simplified_antenna.mat")
p.FeedViaModel = "octagon";
antenna_0 = p;
% define the parameterized version of the top layer
start = [7.74,8.73]*10^-3;
a = 0.999*10^-3;
b = 2.53*10^-3;
c = 4.1*10^-3;
d = 3.13*10^-3;
e = 1.4*10^-3;
f = 6*10^-3;
g = 1.3*10^-3;
h = 0.5*10^-3;
R = 0.35*10^-3;
ant1 = antenna.Rectangle( Length=g+h,Width=a, center=start+[-(g+h)/2,+a/2]);
ant2 = antenna.Rectangle( Length=h,Width=f+a, center=start+[-g-h/2,(a+f)/2]);
ant3 = antenna.Rectangle( Length=e,Width=a, center=start+[-g-h-e/2,a/2]);
ant4 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,a/2]);
ant5 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-c+a/2,b/2]);
ant6 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b-a/2]);
ant7 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-a/2,b-a+b/2]);
ant8 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b+b-a*1.5]);
ant9 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-c+a/2,b+b-a-a+b/2]);
ant10 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b+b+b-a*2.5]);
ant11 = antenna.Rectangle( Length=a,Width=b, center=start+[-g-h-e-a/2,b+b+b-a-a-a+b/2]);
ant12 = antenna.Rectangle( Length=c,Width=a, center=start+[-g-h-e-c/2,b+b+b+b-a*3.5]);
ant13 = antenna.Rectangle( Length=a,Width=d, center=start+[-g-h-e-c+a/2,b+b+b+b-a-a-a-a+d/2]);
ant14 = antenna.Circle(center=start+[-g-h/2,f+a], Radius=R);
Newobj = ant1+ant2+ant3+ant4+ant5+ant6+ant7+ant8+ant9+ant10+ant11+ant12+ant13+ant14;
% check if the parameterized and original version are the same:
figure
show(p.Layers{1,2})
title("Original top layer")
figure
show(Newobj)
title("Parameterized top layer")
% calculate the S parameters
spar_0 = sparameters(antenna_0, (2:0.1:4)*10^9);
figure
rfplot(spar_0);
title("S parameter original design")
antenna_1 = antenna_0;
antenna_1.Layers{1,2}.Vertices = Newobj.Vertices;
spar_1 = sparameters(antenna_1, (2:0.1:4)*10^9);
figure
rfplot(spar_1);
title("S parameter parameterized version 1")
antenna_2 = antenna_0;
antenna_2.Layers{1,2} = Newobj;
spar_2 = sparameters(antenna_2, (2:0.1:4)*10^9);
figure
rfplot(spar_2);
title("S parameter parameterized version 2")
To make sure that the parameterization is correct, I take two steps. First I check if the original and paramterized version look the same. The result is as follows and shows a nearly similar polygon:
After this, I calculate the S parameters of the resulting antenna design. This is where the strange phenomenon occurs. As the code shows, I add the parameterized top layer to the antenna design in two different ways: antenna_1.Layers{1,2}.Vertices = Newobj.Vertices; and antenna_2.Layers{1,2} = Newobj;. The resulting pcbStack objects are identical but give a significantly different simulation result as shown below:
My question is: How can these two simulations (version 1 and version 2) be significantly different even though the pcbStack objects corresponding to these two simulations are identical. On top of this, how do I know which of the two is the correct simulation. Am I missing a crucial difference between the two antennas designs?
My guess is that something is wrong with antenna design version 2 since the S parameter behaviour differs so much from the original antenna design’s S parameter behaviour. It is very unlikely that this huge difference is caused by the minimal difference between the original toplayer and parameterized top layer definitions.
Best regards,
Richard Eveleens pcbstack, sparameter MATLAB Answers — New Questions
i am not getting the exact data for finite element model updating
clear;
close all;
clc;
% __________ M3=40tons
% | | K3=50*10^6
% ———- M2=45tons
% | | K2=50*10^6
% ———- M1=50tons
% | | K1=50*10^6
% — —
set-up for stiffness matrix and other
m1=50000;
m2=50000;
m3=50000;
mass=diag([m1 m2 m3]);
fprintf(‘The mass matrix n’);
disp(mass)
k1=50*10^6;
k2=50*10^6;
k3=50*10^6;
stiffness=[k1+k2 -k2 0;-k2 k2+k3 -k3;0 -k3 k3];
fprintf(‘The stiffness matrix n’);
disp(stiffness)
Natural frequency(eigen value) and Mode shape(eigen vector) calculation
[v,d]=eig(stiffness,mass);
fprintf(‘lambda value n’);
disp(d);
w=[sqrt(d)];
w1=w(1,1);
w2=w(2,2);
w3=w(3,3);
W=[w1,w2,w3];
fprintf(‘The natural frequencies of this structure are as follows(HZ) n’);
disp(W)
fprintf(‘The mode shape of the structure n’);
disp(v)
fprintf(‘lambda value n’);
disp(d);
w=[sqrt(d)];
w1=w(1,1);
w2=w(2,2);
w3=w(3,3);
W=[w1,w2,w3];
fprintf(‘The natural frequencies of this structure are as follows(HZ) n’);
disp(W)
fprintf(‘The mode shape of the structure n’);
disp(v)
Individusal mode shapes vector
fprintf(‘individusal mode shapes n’);
v1=v(:,1)
v2=v(:,2)
v3=v(:,3)
Plotting of mode shape
% height=[0;3;6;9];
% for i=1:5
% subplot(1,3,i)
% plot([0; v(:,i)],height);
% xlabel(‘mode shape’,’FontSize’,12);
% ylabel(‘Height of the structure’,’FontSize’,12);
% title([‘mode shape’, num2str(i)],’FontSize’,18);
% end
Sensitivity matrix
l1 = [1 0 0;0 0 0;0 0 0]; % DIFFERENTIATION OF STIFFNESS WRT K1
l2 = [1 -1 0;-1 1 0;0 0 0]; % DIFFERENTIATION OF STIFFNESS WRT K2
l3 = [0 0 0;0 1 -1;0 -1 1]; % DIFFERENTIATION OF STIFFNESS WRT K3
Mode shape decomposition
a111=0;
a112=(v2’*l1*v1)/(w1-w2);
a113=(v3’*l1*v1)/(w1-w3);
a121=0;
a122=(v2’*l2*v1)/(w1-w2);
a123=(v3’*l2*v1)/(w1-w3);
a131=0;
a132=(v2’*l3*v1)/(w1-w2);
a133=(v3’*l3*v1)/(w1-w3);
a211=(v1’*l1*v2)/(w2-w1);
a212=0;
a213=(v3’*l1*v2)/(w2-w3);
a221=(v1’*l2*v2)/(w2-w1);
a222=0;
a223=(v3’*l2*v2)/(w2-w3);
a231=(v1’*l3*v2)/(w2-w1);
a232=0;
a233=(v3’*l3*v2)/(w2-w3);
a311=(v1’*l1*v3)/(w3-w1);
a312=(v2’*l1*v3)/(w3-w2);
a313=0;
a321=(v1’*l2*v3)/(w3-w1);
a322=(v2’*l2*v3)/(w3-w2);
a323=0;
a331=(v1’*l3*v3)/(w3-w1);
a332=(v2’*l3*v3)/(w3-w2);
a333=0;
SENSITIVITY MATRIX FORMATION (CONSIDERING BOTH EIGEN VALUE AND MODE-SHAPE DECOMPOSITION)
s11 = v1’*l1*v1;
s12 = v1’*l2*v1;
s13 = v1’*l3*v1;
s21=a111*v1+a112*v2+a113*v3;
s22=a121*v1+a122*v2+a123*v3;
s23=a131*v1+a132*v2+a133*v3;
s31 = v2’*l1*v2;
s32 = v2’*l2*v2;
s33 = v2’*l3*v2;
s41=a211*v1+a212*v2+a213*v3;
s42=a221*v1+a222*v2+a223*v3;
s43=a231*v1+a232*v2+a233*v3;
s51 = v3’*l1*v3;
s52 = v3’*l2*v3;
s53 = v3’*l3*v3;
s61=a311*v1+a312*v2+a313*v3;
s62=a321*v1+a322*v2+a323*v3;
s63=a331*v1+a332*v2+a333*v3;
S = [s11 s12 s13;s21 s22 s23;s31 s32 s33;s41 s42 s43;s51 s52 s53;s61 s62 s63]
SENSITIVITY MATRIX FORMATION 2 (CONSIDERING ONLY EIGEN VALUE DECOMPOSITION)
% s11 = v1’*l1*v1;
% s12 = v1’*l2*v1;
% s13 = v1’*l3*v1;
% s21 = v2’*l1*v2;
% s22 = v2’*l2*v2;
% s23 = v2’*l3*v2;
% s31 = v3’*l1*v3;
% s32 = v3’*l2*v3;
% s33 = v3’*l3*v3;
% S=[s11 s12 s13;s21 s22 s23;s31 s32 s33];
UPDATING PARAMETER (CONSIDERING BOTH EIGEN VALUE AND MODE-SHAPE DECOMPOSITION)
K = [k1 k2 k3];
WA = [w1 v1′ w2 v2′ w3 v3′];
WM = [14.7257 -0.0015 -0.0027 -0.0038 35.4870 0.0029 0.0021 -0.0031 55.2413 -0.0031 0.0033 -0.0011];
K1 = K’+inv(S’*S)*S’*(WM’-WA’)
UPDATING PARAMETER 2 (CONSIDERING ONLY EIGEN VALUE DECOMPOSITION)
% K = [k1 k2 k3];
% WA = [w1 w2 w3];
% WM = [13.3221 36.7237 51.7097];
% K1 = K’+inv(S*S’)*S’*(WM’-WA’)clear;
close all;
clc;
% __________ M3=40tons
% | | K3=50*10^6
% ———- M2=45tons
% | | K2=50*10^6
% ———- M1=50tons
% | | K1=50*10^6
% — —
set-up for stiffness matrix and other
m1=50000;
m2=50000;
m3=50000;
mass=diag([m1 m2 m3]);
fprintf(‘The mass matrix n’);
disp(mass)
k1=50*10^6;
k2=50*10^6;
k3=50*10^6;
stiffness=[k1+k2 -k2 0;-k2 k2+k3 -k3;0 -k3 k3];
fprintf(‘The stiffness matrix n’);
disp(stiffness)
Natural frequency(eigen value) and Mode shape(eigen vector) calculation
[v,d]=eig(stiffness,mass);
fprintf(‘lambda value n’);
disp(d);
w=[sqrt(d)];
w1=w(1,1);
w2=w(2,2);
w3=w(3,3);
W=[w1,w2,w3];
fprintf(‘The natural frequencies of this structure are as follows(HZ) n’);
disp(W)
fprintf(‘The mode shape of the structure n’);
disp(v)
fprintf(‘lambda value n’);
disp(d);
w=[sqrt(d)];
w1=w(1,1);
w2=w(2,2);
w3=w(3,3);
W=[w1,w2,w3];
fprintf(‘The natural frequencies of this structure are as follows(HZ) n’);
disp(W)
fprintf(‘The mode shape of the structure n’);
disp(v)
Individusal mode shapes vector
fprintf(‘individusal mode shapes n’);
v1=v(:,1)
v2=v(:,2)
v3=v(:,3)
Plotting of mode shape
% height=[0;3;6;9];
% for i=1:5
% subplot(1,3,i)
% plot([0; v(:,i)],height);
% xlabel(‘mode shape’,’FontSize’,12);
% ylabel(‘Height of the structure’,’FontSize’,12);
% title([‘mode shape’, num2str(i)],’FontSize’,18);
% end
Sensitivity matrix
l1 = [1 0 0;0 0 0;0 0 0]; % DIFFERENTIATION OF STIFFNESS WRT K1
l2 = [1 -1 0;-1 1 0;0 0 0]; % DIFFERENTIATION OF STIFFNESS WRT K2
l3 = [0 0 0;0 1 -1;0 -1 1]; % DIFFERENTIATION OF STIFFNESS WRT K3
Mode shape decomposition
a111=0;
a112=(v2’*l1*v1)/(w1-w2);
a113=(v3’*l1*v1)/(w1-w3);
a121=0;
a122=(v2’*l2*v1)/(w1-w2);
a123=(v3’*l2*v1)/(w1-w3);
a131=0;
a132=(v2’*l3*v1)/(w1-w2);
a133=(v3’*l3*v1)/(w1-w3);
a211=(v1’*l1*v2)/(w2-w1);
a212=0;
a213=(v3’*l1*v2)/(w2-w3);
a221=(v1’*l2*v2)/(w2-w1);
a222=0;
a223=(v3’*l2*v2)/(w2-w3);
a231=(v1’*l3*v2)/(w2-w1);
a232=0;
a233=(v3’*l3*v2)/(w2-w3);
a311=(v1’*l1*v3)/(w3-w1);
a312=(v2’*l1*v3)/(w3-w2);
a313=0;
a321=(v1’*l2*v3)/(w3-w1);
a322=(v2’*l2*v3)/(w3-w2);
a323=0;
a331=(v1’*l3*v3)/(w3-w1);
a332=(v2’*l3*v3)/(w3-w2);
a333=0;
SENSITIVITY MATRIX FORMATION (CONSIDERING BOTH EIGEN VALUE AND MODE-SHAPE DECOMPOSITION)
s11 = v1’*l1*v1;
s12 = v1’*l2*v1;
s13 = v1’*l3*v1;
s21=a111*v1+a112*v2+a113*v3;
s22=a121*v1+a122*v2+a123*v3;
s23=a131*v1+a132*v2+a133*v3;
s31 = v2’*l1*v2;
s32 = v2’*l2*v2;
s33 = v2’*l3*v2;
s41=a211*v1+a212*v2+a213*v3;
s42=a221*v1+a222*v2+a223*v3;
s43=a231*v1+a232*v2+a233*v3;
s51 = v3’*l1*v3;
s52 = v3’*l2*v3;
s53 = v3’*l3*v3;
s61=a311*v1+a312*v2+a313*v3;
s62=a321*v1+a322*v2+a323*v3;
s63=a331*v1+a332*v2+a333*v3;
S = [s11 s12 s13;s21 s22 s23;s31 s32 s33;s41 s42 s43;s51 s52 s53;s61 s62 s63]
SENSITIVITY MATRIX FORMATION 2 (CONSIDERING ONLY EIGEN VALUE DECOMPOSITION)
% s11 = v1’*l1*v1;
% s12 = v1’*l2*v1;
% s13 = v1’*l3*v1;
% s21 = v2’*l1*v2;
% s22 = v2’*l2*v2;
% s23 = v2’*l3*v2;
% s31 = v3’*l1*v3;
% s32 = v3’*l2*v3;
% s33 = v3’*l3*v3;
% S=[s11 s12 s13;s21 s22 s23;s31 s32 s33];
UPDATING PARAMETER (CONSIDERING BOTH EIGEN VALUE AND MODE-SHAPE DECOMPOSITION)
K = [k1 k2 k3];
WA = [w1 v1′ w2 v2′ w3 v3′];
WM = [14.7257 -0.0015 -0.0027 -0.0038 35.4870 0.0029 0.0021 -0.0031 55.2413 -0.0031 0.0033 -0.0011];
K1 = K’+inv(S’*S)*S’*(WM’-WA’)
UPDATING PARAMETER 2 (CONSIDERING ONLY EIGEN VALUE DECOMPOSITION)
% K = [k1 k2 k3];
% WA = [w1 w2 w3];
% WM = [13.3221 36.7237 51.7097];
% K1 = K’+inv(S*S’)*S’*(WM’-WA’) clear;
close all;
clc;
% __________ M3=40tons
% | | K3=50*10^6
% ———- M2=45tons
% | | K2=50*10^6
% ———- M1=50tons
% | | K1=50*10^6
% — —
set-up for stiffness matrix and other
m1=50000;
m2=50000;
m3=50000;
mass=diag([m1 m2 m3]);
fprintf(‘The mass matrix n’);
disp(mass)
k1=50*10^6;
k2=50*10^6;
k3=50*10^6;
stiffness=[k1+k2 -k2 0;-k2 k2+k3 -k3;0 -k3 k3];
fprintf(‘The stiffness matrix n’);
disp(stiffness)
Natural frequency(eigen value) and Mode shape(eigen vector) calculation
[v,d]=eig(stiffness,mass);
fprintf(‘lambda value n’);
disp(d);
w=[sqrt(d)];
w1=w(1,1);
w2=w(2,2);
w3=w(3,3);
W=[w1,w2,w3];
fprintf(‘The natural frequencies of this structure are as follows(HZ) n’);
disp(W)
fprintf(‘The mode shape of the structure n’);
disp(v)
fprintf(‘lambda value n’);
disp(d);
w=[sqrt(d)];
w1=w(1,1);
w2=w(2,2);
w3=w(3,3);
W=[w1,w2,w3];
fprintf(‘The natural frequencies of this structure are as follows(HZ) n’);
disp(W)
fprintf(‘The mode shape of the structure n’);
disp(v)
Individusal mode shapes vector
fprintf(‘individusal mode shapes n’);
v1=v(:,1)
v2=v(:,2)
v3=v(:,3)
Plotting of mode shape
% height=[0;3;6;9];
% for i=1:5
% subplot(1,3,i)
% plot([0; v(:,i)],height);
% xlabel(‘mode shape’,’FontSize’,12);
% ylabel(‘Height of the structure’,’FontSize’,12);
% title([‘mode shape’, num2str(i)],’FontSize’,18);
% end
Sensitivity matrix
l1 = [1 0 0;0 0 0;0 0 0]; % DIFFERENTIATION OF STIFFNESS WRT K1
l2 = [1 -1 0;-1 1 0;0 0 0]; % DIFFERENTIATION OF STIFFNESS WRT K2
l3 = [0 0 0;0 1 -1;0 -1 1]; % DIFFERENTIATION OF STIFFNESS WRT K3
Mode shape decomposition
a111=0;
a112=(v2’*l1*v1)/(w1-w2);
a113=(v3’*l1*v1)/(w1-w3);
a121=0;
a122=(v2’*l2*v1)/(w1-w2);
a123=(v3’*l2*v1)/(w1-w3);
a131=0;
a132=(v2’*l3*v1)/(w1-w2);
a133=(v3’*l3*v1)/(w1-w3);
a211=(v1’*l1*v2)/(w2-w1);
a212=0;
a213=(v3’*l1*v2)/(w2-w3);
a221=(v1’*l2*v2)/(w2-w1);
a222=0;
a223=(v3’*l2*v2)/(w2-w3);
a231=(v1’*l3*v2)/(w2-w1);
a232=0;
a233=(v3’*l3*v2)/(w2-w3);
a311=(v1’*l1*v3)/(w3-w1);
a312=(v2’*l1*v3)/(w3-w2);
a313=0;
a321=(v1’*l2*v3)/(w3-w1);
a322=(v2’*l2*v3)/(w3-w2);
a323=0;
a331=(v1’*l3*v3)/(w3-w1);
a332=(v2’*l3*v3)/(w3-w2);
a333=0;
SENSITIVITY MATRIX FORMATION (CONSIDERING BOTH EIGEN VALUE AND MODE-SHAPE DECOMPOSITION)
s11 = v1’*l1*v1;
s12 = v1’*l2*v1;
s13 = v1’*l3*v1;
s21=a111*v1+a112*v2+a113*v3;
s22=a121*v1+a122*v2+a123*v3;
s23=a131*v1+a132*v2+a133*v3;
s31 = v2’*l1*v2;
s32 = v2’*l2*v2;
s33 = v2’*l3*v2;
s41=a211*v1+a212*v2+a213*v3;
s42=a221*v1+a222*v2+a223*v3;
s43=a231*v1+a232*v2+a233*v3;
s51 = v3’*l1*v3;
s52 = v3’*l2*v3;
s53 = v3’*l3*v3;
s61=a311*v1+a312*v2+a313*v3;
s62=a321*v1+a322*v2+a323*v3;
s63=a331*v1+a332*v2+a333*v3;
S = [s11 s12 s13;s21 s22 s23;s31 s32 s33;s41 s42 s43;s51 s52 s53;s61 s62 s63]
SENSITIVITY MATRIX FORMATION 2 (CONSIDERING ONLY EIGEN VALUE DECOMPOSITION)
% s11 = v1’*l1*v1;
% s12 = v1’*l2*v1;
% s13 = v1’*l3*v1;
% s21 = v2’*l1*v2;
% s22 = v2’*l2*v2;
% s23 = v2’*l3*v2;
% s31 = v3’*l1*v3;
% s32 = v3’*l2*v3;
% s33 = v3’*l3*v3;
% S=[s11 s12 s13;s21 s22 s23;s31 s32 s33];
UPDATING PARAMETER (CONSIDERING BOTH EIGEN VALUE AND MODE-SHAPE DECOMPOSITION)
K = [k1 k2 k3];
WA = [w1 v1′ w2 v2′ w3 v3′];
WM = [14.7257 -0.0015 -0.0027 -0.0038 35.4870 0.0029 0.0021 -0.0031 55.2413 -0.0031 0.0033 -0.0011];
K1 = K’+inv(S’*S)*S’*(WM’-WA’)
UPDATING PARAMETER 2 (CONSIDERING ONLY EIGEN VALUE DECOMPOSITION)
% K = [k1 k2 k3];
% WA = [w1 w2 w3];
% WM = [13.3221 36.7237 51.7097];
% K1 = K’+inv(S*S’)*S’*(WM’-WA’) programming, digital signal processing, matlab, c++ MATLAB Answers — New Questions
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This page says it is available: Teams Rooms and Devices feature comparison – Microsoft Teams | Microsoft Learn
But this page says it isn’t available: Microsoft Teams Rooms Pro Management Portal – Microsoft Teams | Microsoft Learn
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I’m seeing conflicting documentation about Teams Rooms Pro Management Portal access for GCC.This page says it is available: Teams Rooms and Devices feature comparison – Microsoft Teams | Microsoft Learn But this page says it isn’t available: Microsoft Teams Rooms Pro Management Portal – Microsoft Teams | Microsoft LearnCan someone let me know which is accurate? Read More
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Hello there,
I’m running Outlook from Office Pro 2019
I use Dropbox as a continuous cloud backup for all work files. Anything inside my DropBox folder is auto-synced to the cloud.
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