Chris Nasca responds to the Nov 18, 1996 article "Without a Receipt You May Get Stuck With That Ugly Scarf," reminiscing about a job he once had at Kmart.
This paper investigates the simultaneous causal relationship between investments in information and communication technology (ICT) and foreign direct investment (FDI), with reference to its ...implications on economic growth. For the empirical analysis we use data from 23 major countries with heterogeneous economics development for the period 1976âeuro"99. Discussion Paper No. 2003/30
Back to Basics Lee, Tom
Design news,
11/2008, Letnik:
63, Številka:
17
Magazine Article
With the right software implementation, the CQ approach gives us a fighting chance at deploying more advanced scientific concepts in a timely manner - do a bit more math and science up front, and you ...may be able to overcome the analytical hurdles.
Faster computers and modeling/simulation software have revolutionized the design process for control system engineers. By using model based development (MBD) methods and crafting a virtual simulation ...prototype before committing to metal, plastic, or silicon., innovative engineers are exploring more design options, more successfully predicting performance, and optimizing systems more quickly than ever before. Although the current MBD software toolchain is effective, engineers in many fields also are experiencing one of those fundamental sea changes typical in computing circles: New software techniques are delivering models that are much faster, have higher fidelity, and are simply smarter than traditional engineering modeling software. Software that traditionally has been used for mathematics research and education is being used in engineering modeling to rapidly produce concise, numerically efficient models of complex systems for high-performance execution. The control-design field is one of the areas feeling this most. As it turns out, symbolic technology is quite good at doing the kind of math that engineers must complete to develop system model equations manually. In fact, with the right software layers, a considerably larger portion of the left arm of the familiar V diagram for control system development has software support. The part of the process that used to take 80% of project time now has solid computation support. Another significant benefit of symbolic methods is the natural adaptation to multi-domain modeling.
There is a huge technology divide in society, but it is not where you might think it is. This divide does not separate those who have computers and those who don't. It's instant messaging. Whether ...the medium is MSN or texting on your cell phone, it's clear that there are those who "get" instant messaging, and then there's the rest of us. By the "rest of us," I refer my generation of 30- and 40-somethings who thought we lived and breathed technology. We were the first generation to hack openly and use the word "digital" freely in conversation. But, somehow over the past decade, we lost our sense of techno-hip. I have been undergoing some strong new media therapy in my role as the designer and host of our company's new blogging site and our podcasts. Working in new media has been a great way to reignite the passion that brought me into engineering. The ability to explore and share the most interesting parts of our profession has not only been therapeutic, but it has contributed to our company's overall customer service and promotional efforts. Doing something cool and helping our bottom line? That's just sick - LOL.
Math matters Lee, Tom
Machine Design,
02/2007, Letnik:
79, Številka:
3
Magazine Article, Trade Publication Article
"Math matters" is a phrase recently adopted in an effort to raise awareness of key deficiencies in commonly used engineering software tools and methods. Engineers still do an awful lot of technical ...work on antiquated tools or, at best, spreadsheets, which are notoriously prone to formula error. Math is the common dimension of all the above methods, from basic number crunching, to more sophisticated equation-based modeling. It remains a running joke among engineers that, once you leave college, you never again see an integral or differential equation. Fortunately, attitudes seem to be changing and mainstream engineering is starting to come to grips with effective techniques for managing math.
Celotno besedilo
Dostopno za:
CEKLJ, DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, UILJ, UKNU, UL, UM, UPUK
Some important elements in real-world design include crisply scoping the design and analysis ("How complex a model?" "What assumptions?" "Which constraints?" "Initial values of parameters?" etc.) and ...doing and interpreting sanity checks on simulation results to ensure that the input information is sound and the results are being used appropriately. No amount of design automation has ever defeated the axiom of "Garbage in, garbage out."
Celotno besedilo
Dostopno za:
CEKLJ, DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
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