Author Archives: R.P. Churchill

Communicating With Leaders

Yesterday I attended the Tampa IIBA’s chapter meeting to see the presentation given by Kara Sundar, titled Communicating With Leaders: Increase Your Productivity and Influence. The presentation was very effective and based on materials from the book Change Intelligence by … Continue reading

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A Simulationist’s Framework for Business Analysis: Round Four

Yesterday I gave my talk at the Orlando IIBA chapter meetup. The updated presentation is here: https://www.rpchurchill.com/presentations/zSimFrameForBA_Orlando/SimFrameForBA.html This presentation was a bit different than previous ones because I’ve begun to add some new material dealing with what I call The … Continue reading

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Computer Simulation

I gave this talk on computer simulation at the Mensa Regional Gathering in Orlando on Sunday, January 20, 2019. The slides for the presentation are here. I give a brief description of the major types of simulation and discuss some … Continue reading

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Monitoring System Health and Availability, and Logging: Part 4

One more piece of context must be added to the discussion I’ve written up here, here, and here, and that is the place of these operations in the 7-layer OSI communications model. The image above is copied from and linked … Continue reading

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Monitoring System Health and Availability, and Logging: Part 3

Now that we’ve described how to sense error states and something about how to record logging information on systems running multiple processes, we’ll go into some deeper aspects of these activities. We’ll first discuss storing information so errors can be … Continue reading

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Monitoring System Health and Availability, and Logging: Part 2

Continuing yesterday’s discussion of monitoring and logging, I wanted to work through a few specific cases and try to illustrate how things can be sensed in an organized way, and especially how errors of various types can be detected. To … Continue reading

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Monitoring System Health and Availability, and Logging: Part 1

Ongoing Monitoring, or, What’s Happening Now? Any system with multiple processes or machines linked by communication channels must address real-time and communication issues. One of the important issues in managing such a system is monitoring it to ensure all of … Continue reading

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Designing and Documenting Inter-Process Communication Links

I’ve touched on the subject of inter-process communication previously here and here, but now that I’m charged with doing a lot of this formally I wanted to discuss the process in more detail. I’m sharing this in outline form to … Continue reading

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Microsoft Excel: It’s More Than Just VLOOKUP

Yesterday’s post touched on the importance of being able to use spreadsheets well, and particularly Microsoft Excel. I thought I would expand on that subject here. I saw copies of Lotus 1-2-3 back in college and certainly read about it. … Continue reading

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Post University CIS Advisory Committee Annual Meeting – 2018

Today I participated in the annual meeting of the advisory committee for the undergraduate CIS department at Post University in Waterbury, CT (as I have on previous occasions). Most of the students participate in the program remotely, which is a … Continue reading

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