Software Blunders
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A programming error in the guidance software for the Mariner 1 rocket caused it to divert from its intended flight path shortly after launch, resulting in the rocket being destroyed. A bug in the software used to design the Hartford Coliseum roof incorrectly modeled structural supports, leading to the roof's collapse under snow. The CIA sabotaged software controlling the Soviet gas pipeline, resulting in the largest non-nuclear explosion in history.
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Write your thought on the following1. petroski notes that most en.pdf
Write your thought on the following:
1. petroski notes that most engineering failures are much more involved than simple technical
mis-calculations and involve the failure of the design process or management culture.However,
not all engineering failures involve ethical issue.The infamous collapse of the first Tacoma
Narrow Brodge, and the losses of the Mars polar lander and Mars Climate Orbiter were technical
and design process failures.
Solution
In the face of new technology, how do we balance public welfare and progress? If Moisseiff had
designed a bridge similar to the ones which had already proven their stability, Tacoma Narrows
Bridge would never have collapsed costing thousands of dollars and endangering many lives. It
would also have been significantly more expensive. On the other hand, if engineers had never
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their introduction, no one believed that a suspension bridge could safely accommodate trains.
Roebling, however, took a gamble, pushed the limits of the current technology, and built a
suspension bridge that he believed could safely support rail traffic. Luckily he was correct, and
suspension bridges soon became widely accepted (Petroski. Moisseiff also took a gamble, trying
to create a longer, sleeker, less expensive bridge, by pushing the limits of technology. He,
however, was not as lucky, and what could have been a breakthrough in technology turned into a
catastrophic failure. Every time engineers push the limits of technology they risk a similar loss
like losses of mas polar lander and mass climate orbiter in which there were technical error like
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1. Inadequate specifications which includes what the software was supposed to do, but no
mention of what it must not to do.
2. Flawed review process: Violation of basic engineering safety pracitices in the digital part of
the system.
Mass Climate Orbiter
1. Units communication and attention to detail failure. The primary cause of this discrepancy
was that one piece of ground software supplied by Lockheed Martin produced results in a United
States customary unit, contrary to its Software Interface Specification (SIS), while a second
system, supplied by NASA, expected those results to be in SI units, in accordance with the SIS.
Specifically, software that calculated the total impulse produced by thruster firings calculated
results in pound-seconds. The trajectory calculation software then used these results - expected to
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worth a risk to public safety? What can the engineering profession do to make the
implementation of new technology safer? Do our current peer review and building code
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2) Historically, side channel attacks have been used since the late 19th century but were primarily the domain of intelligence agencies until the 1990s when academics began contributing methods.
3) Popular side channel attacks include electromagnetic analysis to recover signals from EM emissions, timing attacks that analyze cryptographic operation timing variations, power analysis of power consumption patterns, and fault injection attacks that disturb cryptographic computations.
J-J.Quisquater
1) Side channel cryptanalysis involves extracting secret information from physical signals emitted by cryptographic devices, such as electromagnetic radiation, temperature changes, timing information, etc.
2) Historically, side channel attacks have been used since the late 19th century but were primarily the domain of intelligence agencies until the late 20th century when academics began contributing techniques.
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1. Units communication and attention to detail failure. The primary cause of this discrepancy
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States customary unit, contrary to its Software Interface Specification (SIS), while a second
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worth a risk to public safety? What can the engineering profession do to make the
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1) Side channel cryptanalysis involves extracting secret information from physical signals emitted by cryptographic devices, such as electromagnetic radiation, temperature changes, timing information, etc.
2) Historically, side channel attacks have been used since the late 19th century but were primarily the domain of intelligence agencies until the late 20th century when academics began contributing techniques.
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Software Blunders
- 1. All data collected from - http://code-hacker.wetpaint.com Software Blunders