*Just reviewed my Twitter timeline of 2011:*

**#ModellingFoundations**

*Formal foundations of modelling and formalisation of modelling languages:*

**30 Nov:** Reading Model Semantics and Mathematical Logic thx to @seidewitz

**20 Jul:** #WilfridHodges Math foundations for Models #forum #discussion by TY

**18 Apr:** brief update of my readings list: #ModelTheory basics and related topics

**#CognitionModelsSystems **

*On the trinity of model, world, and information system:*

**16 Dec:** An Architecture model for Cognition, Information Systems as well…

**9 Nov:** Three Spaces for Entities and Models of Applications by @MountriverTY

**2 Feb:** RT @alex_lagarde: New post : Intent Discovery – Part 1 : the intents behind softwares

**#BusinessAnalysis**

*From the trenches, for the trenches:*

**10 Oct:** general purpose language vs domain specific lang. – always a trade-off? MoLa #opinion

**16 Sep:** #blog True story of a MDA paradox via @vhanniet

**23 May:** New blog post: Lazy modeling?! #li #v

**17 May:** The Continuum of Social BPM #blog #comment

**20 Apr:** Software Modeling Forum post: I just discovered that I’m actually doing QVT the whole day (in some way) MoLa

**#modelpractice**

*Some more or less deep thoughts I produced during the year:*

**20 Dec:** If “engineering is producing an artifact to cost”, then how can modelling contribute to it? Complexity Aware Modelling #blog

**29 Apr:** #blog Completeness is about obtaining an understanding the structure of the domain. Else it is just collecting facts. Are your Requirements complete?

**20 Jan:**Why finiteness counts #logic #computation

**#Readings**

*Mainly about modelling and related topics:*

**21 Dec:** @PooyanJamshidi some bookmarks for further reading: #ComputationalThinking

**4 Oct:** Cultural Preferences for Formal vs Intuitive Reasoning This is true for #reasoning, but for #abstraction as well

**20 Sep:** Reading: Thalheim (2010) Towards a Theory of Conceptual Modelling “Abstraction and[…]are well understood” #disagree

**31 Jul:** Reading Russ Abbott’s Emergence Explained #Epistemology #Abstraction Implications for Modeling …?

**24 May:** @kentpalmer enjoyed the Dias & Models part. does Presence Identity Truth Reality refer to a specific definition? paper

**17 Mar:** this is very much about abstraction and modeling (although not explic. mentioned): #2011TED

**#Conferences**

*More and More people write short reports about conferences they attended. Certainly a commendable trend in 2011:*

**9 Nov:** #er2011 Slides of keynotes and tutorials ER 2011

**2 Nov:** slides of DSM workshop at #splash2011 DSM 2011

**25 Oct:** Finally, my report of day 1: http://bit.ly/tqHuFu #GOTOAmsFinally, my report of day 1: GOTO 2011 #GOTOAms

**25 Sep:** Report from Graph Drawing « 0xDE: GraphDrawing 2011

**5 Jul:** RT @softmodeling: ICMT/ TOOLS/ SC 2011, take-away from an industrial attendee TOOLS 2011

**#Science**

*Underestimated: the role of understanding in science:*

**3 Jan:** people only get academic credit for creating new knowledge and not for explaining existing knowledge better link

**7 Jan:** “The act of discovery was not complete for Richard Feynman until he had taught it to someone else.”

**#FreeStuff**

*Mainly books on misc. topics:*

**26 Dec:** #INRIA An awesome free book by +Serge Abiteboul, … Web Data Management

**26 Dec:** Now our eBook on Use-Case 2.0 – Agility @ Scale is available for free download.

**27 May:** My venture group just published a free book on Agile Retrospectives

**25 Apr:** #book #online Fundamentals of Algebraic Graph Transformation Ehrig² Prange Tänzer 2006 #Springer

**#MyFavBrainTeaserIn2011**

**28 Nov:** A regex that tests numbers for prime numbers: puzzle

**#Finally**

*So, one special thing about 2011 was certainly:*

**1 Jan:** 2011 is also the sum of 11 CONSECUTIVE prime numbers: 2011=157+163+167+173+179+181+191+193+197+199+211 [woot]

*2012 will have to try hard to keep up with with so much mathematical witt. However at least we will have an important 455th birthday in 2012:*

**18 Feb:** Equal sign (“=”) was invented in 1557 by Welsh mathematician R. Recorde to replace “is equal to” in his equations.

*And of course the other (not less important) anniversary:*

**18 Feb:** Excellent mini-bio The Life of Alan Turing just appeared on YouTube: #Turing Worth a watch!

**Thats it mainly for 2011. Have a nice 2012!
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**#PS**

**25 Jul:** RT @kentpalmer: Periodic Table of Irrational Nonsense #fun

**24 Jun:** RT @amazedsaint: “Light travels faster than sound, that’s why some people appear bright until you hear them speak” #quote

**14 May:** With the greatest respect, an essential guide to what the British actually mean when they say…. dictionary (pic)

**10 Apr:** sitting in cafe doing #ModelTheory on floor above a #ModelCasting going on 🙂

**21 Jan:** @softmodeling I’m a modeler – I can’t see any benefits in programming. just bugs, bugs, bugs 😉

Thx for the likes and the Tweets everybody! Have happy new year!

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