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Denise Case
Works at Northwest Missouri State University
Attended Kansas State University
Lived in Minnesota
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Denise Case

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A compositional framework for Markov processes (open continuous-time Markov chains).

#categorytheory   #networktheory   #markov  #circuits
Working hard

Here are two of my grad students, +Blake Pollard and +Brendan Fong, sitting in the Quantum Cafe at the +Centre for Quantum Technologies.  It may not look like it, but they're working hard!

The great thing about math and theoretical physics is that you can make real  progress by talking - and, of course, writing on the board.  Ideally, two or more people join to form a 'group mind' which is more intelligent than any one individual.  And it happened this summer!

We cracked a problem that had been bugging Blake and me for over a year.  How can you use category theory to describe the behavior of processes where a population of individuals hops randomly from state to state, but individuals can also come in from the 'outside world', or go back out? 

Imagine an office building where customers come in, wait in line, go to another line, and then walk back out.  Or a chemical reaction in a cell, where molecules can come into the cell from the outside, engage in various reactions, and other molecules go back out.  These analogies aren't perfect, but they give a rough idea of what we're studying. 

The analogy we really  used in our paper was to electrical circuits, where current can flow in and out.  Brendan and I had already shown that electrical circuits are morphisms of a category.  This is a great way to understand how you can build bigger circuits out of smaller pieces - and how the behavior of a big circuit can be understood in terms of those smaller pieces!  Now, together with Blake, we used that previous work to solve this new problem.

Anyway, I made Blake and Brendan work really hard, and we finished a paper, which is on the arXiv.   But if reading the paper seems like too much fun - for example, if you have a weak heart and your doctor has told you to avoid excitement - you can just read my blog article:

After we mostly finished the paper, Brendan went back to Oxford.   Blake toured Borneo, Myanmar and southern China before going back to the US.   I'll stay here until classes start.  Then Blake and I will get back to work on this stuff. 

We're really just starting.  The ultimate goal is to develop a theory of networks that's good for understanding things like biochemistry.  That will take a while, but  think we can do it.
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Denise Case

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Beautiful first day of school.   Welcome and welcome back to our Northwest Missouri State Bearcats! 

#nwms   #university   #BestLifeEver  
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Thanks Heath! We're really fortunate. It was beautiful again this morning Mark - if I get some time this weekend, I'll try to find your PhotoSphere tutorial and give it a try. :)
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Oliver Sacks Dies at 82; Neurologist and Author Explored the Brain’s Quirks. I've really enjoyed his books - Dr. Sacks had a true gift for describing some of the most unique examples of our human condition.
Dr. Sacks explored some of the brain’s strangest pathways in best-selling case histories like “The Man Who Mistook His Wife for a Hat,” achieving a level of renown rare among scientists.
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Sad news.
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Denise Case

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Our Greatest Adventure. New video in preparation the upcoming movie "The Martian" (featuring Dr. Neil deGrasse Tyson).

Meet the Ares 3 Crew

Ares 3: The Right Stuff

The Martian by Andy Weir

The Martian Movie Site

Thanks +Bobak Ferdowsi​ for sharing!

#JourneyToMars #themartian #areslive #mars #cosmos #spaceexploration #innovativeadvertising
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Denise Case

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Apollo 17 lander image.  

  #spaceexploration  #courage #humansareamazing
Remote and Alone

I just stumbled across this image of the Apollo 17 lander that was taken by one of the astronauts while travelling on the lunar rover. I couldn't help but stare at it for minutes, thinking about the emotions those men might have felt while gazing into the distance at their tiny little fragile piece of technology meant to get them home, a home possibly visible overhead and so very far away. The lethal environment just centimeters from their skin, just outside their pressure suit, their whole existence so very dependent on the assembled collection of technologies of the time. 

Via - the author captures the sentiment well and lists the very many things that must go just right for these men to return home. 

Apollo 17, the final moon mission
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Denise Case

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The Lifecycle of a[n Internet] Revolution. Black Hat 2015 keynote speech by Jennifer Granick, Director of Civil Liberties at the Stanford Center for Internet and Society. 

The End of the Internet Dream (Medium article)

Jennifer Granick

Related Articles

Hacker's Manifesto (Phrack Magazine 1986)

Summary Slide (Image from the Keynote)

BlackHat USA 2015 (August)


[edited: formatting & organization, added link to related article "The End of the Internet Dream"]

#cybersecurity   #privacy   #freedom   #blackhat   #hacking  
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Denise Case

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Today marks an alarming record: for the first time in recorded history, there are three Category 4 hurricanes simultaneously moving across the Pacific Ocean. From left to right, these have been named Kilo, Ignacio, and Jimena; Ignacio is currently headed towards the Big Island of Hawaii, while the path of the other two isn't yet clear enough to know if any islands are in danger.

You can read more about it here:

h/t +Mike Clancy.
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From which country you are? 
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In case you have not seen this yet. Martin Odersky's presentation entitled "The Trouble With Types" (2013). On slide 14, a landscape of programming languages is partitioned based on their type systems. Dart is in the category "cutting corners" :). An interesting presentation.

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Top right corner is full of awesome
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Kansas Voting: Kansas seeks to block release of voting machine paper tapes

Bizarre. A mathematician wants to check the paper records against the electronic results for anomalies... and the state is fighting the release. Why? What could it possibly matter if they are the same? Unless this mathematician is right.

WICHITA, Kan. (AP) – The top election official in Kansas has asked a Sedgwick County judge to block the release of voting machine tapes sought by a Wichita mathematician who is researching statistical anomalies favoring Republicans in counts coming from large precincts in the November 2014 general election.

#elections #electionfraud #corruption #republicans #kansas 
Secretary of State Kris Kobach argued in a court filing made public Monday that the records are not subject to the Kansas open records act.
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50 years of Mars Exploration. Four minute celebration of NASA's successful missions to Mars - definitely worth a watch. 

2015 marks 50 years of successful +NASA missions to Mars starting with Mariner 4 in 1965. Since then, a total of 15 robotic missions led by various NASA centers have laid the groundwork for future human missions to the Red Planet. The journey to Mars continues with additional robotic missions planned for 2016 and 2020, and human missions in the 2030s..

#spaceexploration #mars #humansareamazing
#JourneyToMars   #NASA   #Mars  

Five decades of successful +NASA robotic missions to Mars have laid the groundwork for future human exploration of the Red Planet.
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Warsan Shire - first-ever Young Poet Laureate for London -  is a Kenyan-born Somali poet, writer, editor, and educator. 

"Poetry is not an expression of the party line. It’s that time of night, lying in bed, thinking what you really think, making the private world public, that’s what the poet does."

— Allen Ginsberg

"Poetry is the journal of a sea animal living on land, wanting to fly in the air."

 – Carl Sandburg

Instrumental: Zoë Keating - Sun Will Set from "One Cello x 16: Natoma"

Warsan Shire - "For Women who are 'Difficult' to Love"

#poetry #poetlaureate   #warsanshire  
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This is simply beautiful, a summation of the unsummable.
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Have her in circles
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“The master in the art of living makes little distinction between his work and his play, his labor and his leisure, his mind and his body, his information and his recreation, his love and his religion. He hardly knows which is which. He simply pursues his vision of excellence at whatever he does, leaving others to decide whether he is working or playing. To him he's always doing both. ” ― James A. Michener
  • Northwest Missouri State University
    Asst Professor, present
  • Johnson County Community College
    Adjunct Asst. Professor, 2013
  • Black & Veatch
    Consulting Engineer, 2015
  • Kansas State University
    Graduate Student, 2011 - 2015
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Minnesota - Kansas
The secret of life is two words: not always so :)
A Few Favorite Quotes

"A ship in harbor is safe. But that is not what ships are for." 
- Rear Admiral (and Computer Scientist) Grace Hopper

"Do not believe in anything simply because you have heard it. Do not believe in anything simply because it is spoken and rumored by many. Do not believe in anything simply because it is found written in your religious books. Do not believe in anything merely on the authority of your teachers and elders. Do not believe in traditions because they have been handed down for many generations. But after observation and analysis, when you find that anything agrees with reason and is conducive to the good and benefit of one and all, then accept it and live up to it." 
- Gautama Buddha

"There should be no boundary to human endeavor."
- Stephen Hawking

"My undergraduate experience convinced me that I was not smart enough to be a physicist, and that computers were quite neat."
- Dennis Ritchie
  • Kansas State University
    PhD Computer Science, 2013 - 2015
  • Kansas State University
    MSE Software Engineering, 2013
  • University of Missouri–Columbia
    BS Chemical Engineering
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