114网址导航“There is great power in SimTread’s capabilities, as it can save lives, so it’s of the utmost importance that the program continues to be improved,” said Dr. Takeshi Kimura, manager of research and development at A&A. “The latest version keeps with this mentality and includes several beneficial visualization features that can help those responsible for disaster preparedness, public safety, facilities management, and event planning, all with the point of safety at the forefront.”
Three key enhancements made in the latest SimTread release are:
The “Create Measurement Result” command offers a new way to display reports to clients using a color-coded map on top of a floor plan, which helps to identify potential egress bottlenecks. Specifically, it displays occupant density within a specified measurement area of a Vectorworks document. Previously, SimTread only offered a movie file as the visual representation of the simulation result, and, although it intuitively showed the nature of the crowd, this new command provides a more qualitative, visual report.
SimTread 2.4’s Create Measurement Result command is shown on the right in comparison to the previous version on the left.
The visual reporting feature, “Plot Travel Time” command, will plot the time it will take for each individual occupant to evacuate from a building model within a Vectorworks document. After the simulation, SimTread displays a circle over each occupant’s starting position, color-coded to indicate how long it took each individual to evacuate. The demand for such reports arose from the need to plan for city-wide evacuations.
SimTread 2.4’s Plot Travel Time command is shown on the right in comparison to the previous version on the left.
Vectorworks objects that appear as holes in plan view, such as columns, will be recognized in the updated simulation software.
“Among SimTread 2.4’s many updates, the improved graphical presentation of the program’s results will help articulate the benefits of large-scale evacuation planning,” said Jeremy Powell, product marketing director at Vectorworks. “These new visualizations came from our research and consultancy work, so we hope it will benefit other users, as well.”
To learn more about SimTread software’s capabilities, visit our . Or, if you’re attending
in Philadelphia on May 19-21 come by our booth #2345.Windows Updates fail to install in Windows 10/8/7PSA: New Lollipop OTA Procedure On Nexus Devices Means Your Update Will Fail If Your System Is Modified In Any Way At All
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Ever since the beginning, Android OTA updates have worked by patching each file on your system partition individually. With Lollipop, that is all changing, and it has some important implications for those who like to root and mod their devices.
Here's what a pre-Lollipop update script looked like:
As shown, the recovery looks at this, finds each file, checks its signature, then applies a patch to it if it matches. This is the slow way of doing things, but it had a big benefit for rooters and those who like to mod their devices. As long as none of those files were touched, you could have anything you wanted on your system partition (the "su" binary for instance, maybe an INI file for a root app, etc.) and you could still apply OTA updates successfully.
With Lollipop, this has all been turned on its head because now, the OTA script no longer patches individual files. Instead, it patches the system block directly and treats it as one enormous blob. Here's a look at the update script in a recent Nexus 9 OTA:
From a technical standpoint, the reason behind the change has to do with verified boot, which was first introduced in KitKat. Even though Google has yet to enable this feature on a Nexus device, this move seems to indicate that the company could be preparing to go that route in the future.
Even outside of verified boot, though, it makes all the sense in the world to do OTAs this way. Patching the system block directly is far faster than trying to patch a lot of individual files. That said, if you're one of those who like to tinker with your devices, you'll have to flash a completely stock system image before applying an update because changing anything by so much as one byte will throw off the signature and make it so the OTA will fail.
When is the last time you bought an Android tablet? (Excluding the Kindle Fire)
This year (2016).
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I've never bought an Android tablet.
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