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This section was written by Associate Editor Jean
Thilmany |
computing |
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Look
Both Ways
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Your Excel and your Windows programs aren't
meant to support each other, but computer scientists say that they should.
Database and text programs should be searchable by one software application
that could comb through both text and spreadsheets and return meaningful
results, they say.
A team of European researchers is behind such a software system, which
would analyze in tandem information stored in databases and written text.
"Analyzing structured data is not new," said Babis Theodoulidis,
a senior lecturer at the University of Manchester's Institute of
Science and Technology in Manchester, England. "Analyzing unstructured
information using computers is only a recent development, but integrating
and analyzing the combined data has never been done before. Our framework
makes that possible."
Theodoulidis coordinates the European Union-funded Parmenides project.
Parmenides coordinates structured information stored in databases with
unstructured information, essentially anything that can't be stored
in a database. The vast majority of digitized information is unstructured
text, like reports, newspaper articles, letters, and memos.
So a computer running the Parmenides application could analyze a given
text and put it into context.
"For example, a company might get a letter of complaint and then
an employee needs to read and forward it to the right person,"
Theodoulidis said. "In our system, the letter is read by a computer,
which then links the letter to the company's personnel database
and forwards the letter to the right person."
"Analyzing text requires human intervention, and when you're
trying to analyze perhaps thousands of documents in many different languages,
really large-scale text analyses become very expensive, or even impossible,"
Theodoulidis said.
The Greek Ministry of Defense has already used the system to analyze large
amounts of unstructured datalike newspaper reports about terrorist
attackswhich it combined with military intelligence. Such analysis
could reveal that one group is changing its methods from car bombs to
suicide bombs or chemical attacks. Or that one group is beginning to work
with another, Theodoulidis said.
Also, Unilever used Parmenides to get a picture of the relationship among
weight, health, and food by analyzing journal articles and newspaper reports.
The system can monitor changes over time to identify new trends.
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To
the Moon
|
The Space Shuttle may soon meet its replacement.
The Crew Exploration Vehicle is NASA's proposed manned spacecraftessentially,
the next-generation Space Shuttle.
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| NASA engineering teams are working
on the Crew Exploration Vehicle, which will be the first manned spacecraft
designed in the United States in the past 30 years. |
Engineers at work on the spacecraft use product lifecycle management
software, Windchill, from PTC of Needham, Mass., as an extranet to manage
data and to collaborate between themselves and their suppliers.
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3-D From the Get-Go
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When Stefan Kolb, manager of research and
design, joined a newly formed company, he had one stipulation: Product
development must be based on three-dimensional computer-aided design.
The company makes huge pieces of mining equipment and Kolb thought 3-D
was up for such big jobs.
"It was the year 2003; I certainly wasn't going to set up a two-di-mensional
design process," Kolb said. "With 3-D, we can show customers exactly what
we intended in discussions, we can run simulations, and we can detect
problems early on."
He also selected 3-D for accurate quotation.
"You can fool yourself and your customers with 2-D drawings, but that
can be very dangerous," said Bernhard Sänger, general manager. He
works with Kolb at the company, Robbins GmbH of Goeppingin, Germany, which
makes mining equipment like the tunnel-boring machines capable of digging
deep into the earth.
Under Kolb's tutelage, the company installed the OneSpace Designer CAD
software from CoCreate of Fort Collins, Colo.
In the future, company officials want to use CAD data to create virtual
prototypes.
"Our customers pay us for a perfect product," Sänger said. "In fact,
they don't pay entirely until they see our machines flawlessly bore a
hole on the job site."
Without the CAD software, "We'd end up solving many of our problems with
a welding torch. That's expensive and time-consuming," Kolb said.
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Big Math
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Large models naturally make for complicated
calculations. Take the case of Stork Fokker Aerospace.
The aerospace company in Hoogeveen, The Netherlands, created the fiberglass
and aluminum laminate called Glare for the Airbus A380's J-Nosethe
edge of the fixed wing.
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| Pushing envelopes: A supplier
of composite materials for the 555-seat Airbus A380 found it needed
special calculation software and a new server to deal with the model
of the airplane's wing. |
While the J-Nose was nothing new for Stork Fokker (It had made those
pieces for the A380's forerunner, the A340.), the company's
engineers had never dealt with a model as big as the A380. The model's
sheer size made it difficult to work with, said Wydo Van de Waerdt, a
stress engineer at the company.
"The A380 wing is so large that linear calculations no longer sufficed,"
Van de Waerdt said.
The calculations were the largest computational models the company had
ever used.
"The size of the computation and the data processing involved meant
we had to purchase a new computation server," Van de Waerdt said.
The computations also exceeded the capabilities of Excel, he added. So
the company brought in new calculation software, Mathcad, from Mathsoft
Inc. of Cambridge, Mass.
That software lets engineers adjust calculations for slight changes, which
speeds along the design process, Van de Waerdt said.
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Now, Fear This
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Here's a little scenario: The turbulence
grows worse; you tumble in your seat. You look out the plane's
window at the dark storm clouds and fight nausea even as you hear someone
else being sick.
This is your worst nightmare. You want to jump up, run to the cockpit,
and beg the pilot to land.
But there is no pilot, or plane either. You're actually sitting
in the virtual reality room at the Fairview University Anxiety Disorders
Clinic in Minneapolis, experiencing the flight through a headset, through
woofers that simulate engine vibrations in the floor under your seat,
and by Chris Donahue, a University of Minnesota assistant professor of
psychiatry, shaking the chair with his hand.
For nearly a year, the clinic has been using virtual reality to desensitize
patients to their fears and anxieties. The key is to repeat an experience
many times, which can't be easily done when the anxiety to be treated
involves things like flying or public speaking. Other programs treat fear
of storms, heights, closed spaces, and being interviewed.
Engineers use much the same type of virtual reality technology, but to
a different end, of course. They immerse themselves in an analysis or
simulation to better understand the problem and to see it close up.
People with anxiety disorders immerse themselves in an experience to eventually
desensitize themselves to the feelings.
In the virtual-reality flight program, patients experience sitting in
a plane on the tarmac, taxiing, taking off, flying, and hitting turbulence.
Those who fear speaking in public stand in front of a bored or hostile
virtual audience and hear a cell phone go off in the middle of their presentations.
"Immersion is everything for this to be a viable therapy,"
said Matt Kushner, the clinic director. "We match the sights and
sounds of the real experience."
Afterward, patients tell the therapists what worked and what didn't.
For example, fear-of-flying patients have said that the vibrations in
the floor were important in making the experience realistic.
Without realism, patients are unlikely to feel afraid and therefore cannot
become desensitized to their fear, Kushner said.
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Stream- lined Ship
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Making something as huge as a ship calls
for a lot of internal business coordination.
Engineers at New Century Shipbuilding in China are at work on the prototype
of a container ship. They are using software that coordinates communication
among the hull, outfitting, design, and fabrication departments.
"In our heavily competitive market, it's vital to streamline
every aspect of our business," said Chen Xueliang, director of
New Century's design institute located in Jingiang.
The shipbuilder has installed a plant-design management system from Aveva
of Cambridge, England. With the system, the company standardized all departments
on the software platform, which includes visualization, project management,
and engineering design capabilities.
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Doodle Search Engine
|
Call it a very advanced Etch A Sketch.
Imaginestics of West Lafayette, Ind., has created 3D-Seek, a shape-search
engine. With it, users can find items in an online catalog by making a
doodle of the part they need. They don't have to specify an item
name or part number; they just need a hand drawing.
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| Google not doing it for you? 3D-Seek
is a shape-search engine. Sketch the part you seek on a digital pad
and an engine that can recognize patterns will comb through a catalog
to find it. |
The engine connects to a freehand sketching device. Pattern-recognition
technology does the rest by matching the sketch with parts in the catalog,
said Nainesh Rathod, Imaginestics' president. Users select the
part they need and order it.
The company developed 3D-Seek and its associated catalog mainly for manufacturing
firms looking for hinges, bolts, conveyor belts, motors, and the like.
"This search engine can help find the proverbial needle in the
haystack," said Errol Arkilic, an officer at the National Science
Foundation's Small Business Innovation Research program, which
helped fund research for the shape-search engine.
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| Think of 3D-Seek as an advanced
Etch A Sketch. |
"In order to make such a search engine commercially viable, we
had to overcome the challenge of matching something as rudimentary as
a doodle to a 3-D object in seconds," Rathod said. "This
is important, as Web users have become accustomed to retrieving information
instantaneously."
Eventually, the basic search engine could be useful for ordinary shoppers:
Instead of having to go to the hardware store with, say, a specific plumbing
joint, customers could just sketch what they need.
While researchers have been working for several years on software that
can compare industry-standard 3-D image files to each other, the new method
is faster than most and permits search terms that are outside the norm,
Arkilic said.
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Briefly
Noted
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CADDsoft Solutions Inc. of Fort Worth, Texas, has released Concepts
Unlimited, the third version of its CAD software.
VizUp Technology of Vancouver, British Columbia, has released
VizUp 2.1.2, which can reduce models
of as many as five million triangles.
Google Inc. of Mountain View, Calif., has purchased @Last
Software of Boulder, Colo, which makes the 3-D modeler SketchUp.
Agile Software Corp. of San Jose, Calif., will add the Linux
open source operating system to the list of supported environments for
its Agile PLM software.
Fluent Inc. of Lebanon, N.H., has upgraded its FloWizard software
to version 2.1. The software is for flow modeling and thermal analysis.
According to a recent estimate by market analysis firm Dara-
tech, spending on PLM software topped $10.4 billion in 2005, up 13
percent over 2004. Daratch is located in Cambridge, Mass.
MachineWorks Ltd. of Sheffield, England, which makes simulation
and verification software for machine tool manufacturers, has released
MachineWorks version 6.3.
Capvidia of Leuven, Belgium, has upgraded its FormatWorks software,
which is for SolidWorks users who need to translate Catia data into their
CAD program.
Autodesk Inc. of San Rafael, Calif., has released its Autodesk
Manufacturing Supplier Content Center, an online portal that offers catalogs
of models and parts through the Inventor desktop.
Fort Worth, Texas-based developer Pointwise has upgraded its
computational fluid dynamics meshing software to Gridgen version 15.09,
which now includes solid modeling and solid meshing.
Cimatron Ltd. of Givat Shmuel, Israel, which makes CAD and computer-aided
manufacturing software, has released
5-Axis Production, a five-axis numerically controlled package for production
of complex parts.
Magsoft Corp. of Ballston Spa, N.Y., is shipping Flux version
9.2 for the analysis and design of electromagnetic and electromechanical
devices.
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