Category Archives: Web Site

Evolution of Reactor Lab

Reactor Lab celebrated its 27th anniversary in March 2020. Starting in 2003, the desktop version was integrated with the Internet, with advanced features for that time.

These advanced features included automatic download and installation of updated files for off-line work, a conference (chat) room for discussions within Reactor Lab, and the ability to run process simulations involving local units and units at other locations in the same system. At that time, one could not assume constant connection to the Internet, as we do now. Once, from San Diego, I had a three-way discussion with a person in Michigan and a person in Turkey in the conference room.

I retired from the University of California at San Diego – UCSD – in 2014. Since then, my interest has shifted from the desktop version, which was constructed with LiveCode, to the HTML5-based Web Labs at this site.

This shift has been for a number of reasons, including omnipresent Internet connection in much of the world, almost everyone has access to the web and a web browser without having to download an application file, and the fast speed of Javascript built into web browsers.

That said, desktop apps have advantages over web pages such as saving data files to disk. In Web Labs, one has to go through an extra step to copy text from a popup window and save to a disk file. There are so many features that were built into the desktop Reactor Lab that duplicating them all in HTML5 might not happen.

I used to post standalone application files for Windows and Macintosh. With the evolution of operating systems and the evolution of LiveCode, I no longer wish to make the revisions necessary to build standalones.

However, one can continue to use the desktop Reactor Lab on Windows, Mac, and Linux. This can be done by downloading the free, open-source version of LiveCode from LiveCode.org and by downloading the free, open-source version of Reactor Lab from my github site at github.com/RichardHerz.

Instructions for how to do this are posted at the Download tab.

Where are you?

As long as we were teaching, we knew our notes and software were being used by our students. Now that we have retired, we have to analyze our web logs to see who is using the site and software. We are in the process of writing LiveCode scripts to scan through our logs and do some analysis. Here are some preliminary results for the month of February, 2018.

The first objective was to try to purge the logs of all web bots, spiders and crawlers. We were left with 20% of the original lines in the logs. I suspect that the bots/spiders/crawlers are indexing the PDF files in the RESOURCES section, which allows many users to find them in searches. Good in some aspects, but many users might not explore the rest of the site. All the RESOURCES content may be the reason that a search for “ReactorLab” or “Reactor Lab” puts our site at the top of page 1.

We were left with 3200 unique visitors after the purge, or simply “visitors” henceforth (unique IP addresses). This number roughly agrees with the Visitor Maps results in the NOW section. These visitors were from 107 different countries. The top five countries with the most activity were the US, India, Philippines, Ukraine, and the United Kingdom.

Of those 3200 total unique visitors, 2300 visitors from 96 countries used pages in the RESOURCES section of the site: 370 from 56 countries used the Matlab section, 1100 from 74 countries used the undergrad CRE Notes section, and 530 visitors from 66 countries used the Grad CRE section.

There were 59 visitors who downloaded the desktop software, and 86 visitors who ran the desktop software AND went “online.” There were six users of the Web Labs. Again, these numbers are for the month of February, 2018.

So far, I am pleased with what I am finding. I would be delighted to hear directly from you via email to   . Thanks.

Fun to see Visitor Maps

We recently added the Visitor Maps plugin to our About page. We are getting about 50 visitors per day. By clicking the “View more maps in the Visitor Map Viewer” link under the map, you can get versions where you can mouse over the map pins, wait, and get a tool tip showing where the pin is located. Here is a static screen shot:

visitorMap

static screenshot of Visitor Map on Aug 12, 2016

Looking for SimzLab?

We closed the SimzLab project in order to concentrate our efforts here with Reactor Lab. An archival copy of SimzLab is posted at the Download page here at the Reactor Lab site. As we get time, we will incorporate some of the PureWaterLab and Control Lab modules from SimzLab into Reactor Lab.

Looking for PureWaterLab?

We closed the PureWaterLab project in order to concentrate our efforts here with Reactor Lab. PureWaterLab modules are incorporated in the archival copy of SimzLab, which can be downloaded from the Download page here at the Reactor Lab site. As we get time, we will incorporate some of the PureWaterLab modules into Reactor Lab.