41. ST-Machine Benefits Deploying STEPNC AP-238 CC1 using our ST-machine tools helps your organization STEP-NC can reduce the cost of prove-out and enable better workload http://www.steptools.com/products/stmachine/benefits.html

Home Products Translation Service News ... Overview Benefits CAM Systems CNC Controls Checkers STEP-NC Benefits Deploying STEP-NC AP-238 CC1 using our ST-Machine tools helps your organization capture business benefits in: More efficient prove-out and workload balancing Reduced costs for quality control More accurate control More Efficient Prove-Out and Workload Balancing STEP-NC can reduce the cost of prove-out and enable better workload balancing for the following reasons: The post is replaced with a converter. The converter does not have to perform any mathematical transformations and can be supplied as a standard option in the CNC vendors catalog. Posts are written by a third party vendor as a piece of custom software that is only used for one control only. Therefore, they are inherently less reliable than software that is used by thousands of people on thousands of controls. The toolpaths that are sent to the control use workpiece coordinates. Therefore, a system can be built to show the paths that are going to be executed in advance of the dry and slow runs (a forward plot). The operator can then decide which paths need to be simulated in a dry-run and which do not because they are no where near the system limits. He or she can also see the future path of the slow-run and be less conservative with respect to reducing the feed-rate when the path is going to be in safe areas The AP-238 specification allows the product geometry, fixture geometry, cutting tool geometry and tool holder geometry to be communicated to the control where it can be combined with the already known machine geometry. Many CAM systems contain simulators that detect collisions. AP-238 allows these systems to be used on the control where they will further help the operator reduce the time and stress of prove-out.

42. Billmon get worse — and that Iraqi security forces prove themselves ready for combat . I live in a Republican machine county myself, so I know how that goes. http://billmon.org/

For if we don't find the next Whiskey Bar, I tell you we must die Bertolt Brecht Other Recent Posts Watchdogs Hard Work The Potemkin President Strikes Again The Prattle of New Orleans ... A Movable Feast Categories Civil Liberties Culture Domestic Terrorism Economics and Finance ... Wilsongate Monthly Archives September 2005 August 2005 July 2005 June 2005 ... April 2003 Current Reading The New American Militarism How Americans Are Seduced by War By Andrew Bacevich Rubicon The Last Years of the Roman Republic By Tom Holland The Middle East Under Rome By Maurice Sartre Syndicate this site (XML) This weblog is licensed under a Creative Commons License Powered by Movable Type 2.63 September 16, 2005 Watchdogs Our goal is to get the work done quickly. And taxpayers expect this work to be done honestly and wisely so we'll have a team of inspectors general reviewing all expenditures. George W. Bush President Discusses Hurricane Relief September 15, 2005 In total, 64% of the IGs appointed by President Bush held some sort of political position, such as a political appointment in a Republican administration or a position with a Republican member of Congress, before their appointments as IGs . . . .Only 18% of the IGs appointed by President Bush had previous audit experience, such as experience in an IG’s office, at the Government Accountability Office, or at a private accounting firm.

43. Experiments Prove Plants Have Feelings - Jun. 24, 2003 In another room, Backster set up a machine that would dump live brine shrimp atrandom into Experiments prove plants have feelings Inner Awareness http://www.inq7.net/lif/2003/jun/24/lif_22-1.htm

Tuesday Jun. 24, 2003, Philippines Text Only All Headlines SMS WAP ... INQ7 news on your PDA RELATED SITE Visit the author's website Note: Sites will open in a new window. INQ7.net does not endorse related sites. Home Lifestyle At a Glance Breaking News ... Global Nation Experiments prove plants have feelings Inquirer News Service THE CURRENT controversy over the removal by the Metro Manila Development Authority of old trees along Katipunan Street in Quezon City to ease traffic congestion has focused public attention on the importance of trees to human life on earth. It is now common knowledge that plants and trees serve living creatures in multifarious ways. They prevent floods and soil erosion, give off oxygen, provide food and shelter for both animals and man and a source of medicine to fight all kinds of diseases.But neither the environmentalists nor the average modern individual is aware of the hidden life of plants or of their extra sensory powers. It was the American polygraph expert, Cleve Backster, who first brought up the incredible idea that plants are aware of their environment and have rudimentary emotions or feelings. Subsequently, he proved that hypothesis beyond doubt. He discovered that plants reacted to the death of other living creatures even though the doomed victims were not in the same room.

44. Power Line The Weekly Standard s Matthew Continetti has the papers that prove it. (if they spoke in an affected London accent and you owned a time machine). http://www.powerlineblog.com/

About Us Print Version XML Feed PDA ... Contact Us var zflag_nid="305"; var zflag_cid="169/1"; var zflag_sid="104"; var zflag_width="300"; var zflag_height="250"; var zflag_sz="9"; September 16, 2005 "As incompetent as they are disingenuous" Victor Davis Hanson on the MSM's frenzied and incompetent coverage of the impact of Hurricane Katrina on New Orleans. The media got the most important facts of the story wrong. Its death count estimate of 10,000 seems likely to be off by a large multiple. And, as Hanson notes, "we were assured that stagnant water would submerge the city for months, even as our screens showed dry, lighted streets, torrents pumped back out and pools evaporating under scorching heat." In fact, the MSM was so busy pointing its finger at President Bush that it largely missed the magnitude and accomplishments of the federal relief effort. Nor did it competently play the blame game, failing to ask the basic question of how this relief effort measured up against past ones. Here's Hanson verdict: For all the media's efforts to turn the natural disaster of New Orleans into a racist nightmare, a death knell for one or the other political parties or an indictment of American culture at large, it was none of that at all. What we did endure instead were slick but poorly educated journalists, worried not about truth but about pre-empting their rivals with an ever-more-hysterical story, all in a fuzzy context of political correctness about race, the environment and the war.

45. Cheap Paris Hotels ¨C Cheap France Hotels A debit card is a good idea as well but not all places accept them and dependingon where you’re going, finding a cash machine may prove to be difficult. http://www.dakarcom.com/

Paris France hotels hotels in Paris Paris FR, Paris France cheap hotels Paris ... Paris France hotels Before you go Find out where you¡¯re going Take the time to read up on where you¡¯re going. Find out what has to be seen or the best restaurant to eat at. Knowing a bit before hand can help you pack and plan. Cash, credit and debit cards It¡¯s always a good idea bring a bit of cash with you for cabs, tips and smaller purchases. Credit cards are great way to go. You can cancel them if they get stolen but more importantly they¡¯re the best back-up for emergencies. And no, finding the perfect pair of Manolo Blahnik¡¯s doesn¡¯t count as an emergency. A debit card is a good idea as well but not all places accept them and depending on where you¡¯re going, finding a cash machine may prove to be difficult. Travel Insurance Don¡¯t gamble with this one. Buy the travel insurance. It¡¯s a relief knowing that should something happen you¡¯ll be covered. Home sitter Whether its walking Fido, taking in the mail, watering the plants or making sure the basement isn¡¯t a lake, its important to have someone come to your home every two to three days. You should call up your insurance company and ask how often they require someone to come in and check up on it. Each policy is different. Passport Leave a copy of your passport at home (note the word copy, not the actual passport). In case you loose it or it gets stolen you can have a copy faxed over. If you¡¯re going over seas, you may want to put a copy of your passport in your suitcase. You can take the copy with you when you¡¯re touring all the great sites and leave the original in the safe.

46. Where's The Voter-verifiable Paper Trail For Each Ballot Cast? The Fraudulent Voting machine Fraudo shows why computerized voting machines Auditing is any procedure that enables you to prove that the results of http://www.wheresthepaper.org/

Links to more info Important Documents News Sources Find my representatives ... Contact Us Where's the Paper Trail for Each Ballot Cast? .....A Web Site Dedicated to Election Integrity..... .....Home of the Fraudulent Voting Machine..... What's the problem with computers in elections? The blue display below is a teaching demonstration called the Fraudulent Voting Machine. Please use it to run some elections, and then read the explanation below it. The demo starts by asking you to choose a "machine test" or "real election." Machine tests give accurate final tallies, but real elections might not! This is because, in a real election, one particular candidate is programmed to win. Is it realistic to demonstrate a program that works two different ways? Yes! If you read the news you know that at least one major manufacturer of voting systems does something similar they use one program during tests, and a different program during real elections. And many manufacturers install "patches" which means different programming just before an election. The demo runs an election with two candidates, John Doe and Mary Smith. In a "real election" if you enter any votes, Mary Smith will win. Fraud can look totally authentic to see for yourself, run a real election and enter more votes for John Doe, or give both candidates the same number of votes. After running your elections, read more below!

47. ETH - Computer Science - Prof. Robert Stärk to prove security properties of ASMs like that the machine does not read 3 RF Stärk, J. Schmid and E. Börger Java and the Java Virtual machine http://www.inf.ethz.ch/news/focus/res_focus/apr_2004/index

About Us People Contact Sitemap ... Help Search Research Education Services Maturandeninformation ... Related Links Prof. Robert St¤rk A Logic for Secure Memory Access of Abstract State Machines Prof. Dr. R. F. St¤rk How can we formally prove that all memory accesses of a program are permitted? How can we show that high-performance C code like a network filter is memory safe? How can we use formal methods to prove that applets on a smart card are isolated and do not read critical locations of each other? How can we safely eliminate array bound checks and null pointer checks in Java programs? - An attempt to solve such problems with standard programming logics like Hoare logic or dynamic logic will immediately fail, since the problems have to do with memory access and it is not even possible to formulate memory access properties of programs in these logics. For example, a simple property of a sorting algorithm, like that when sorting the subarray in the interval from l to r the algorithm reads array elements a[i] with index i between l and r only, cannot be proved in these logics, since the property cannot be expressed in the formal language of the logics. We therefore extend our logic for Abstract State Machines by a read predicate that allows to make precise statements about the accesses of locations of an ASM. The logic can be used to prove security properties of ASMs like that the machine does not read locations containing critical information or that all accesses of the machine to the abstract memory are permitted. The logic is sound and complete for hierarchical ASMs without cycles in the call graph and it is sound for turbo ASMs with possibly recursive rule declarations. It is integrated in the AsmKeY theorem prover, an extension of the KeY system developed at the University of Karlsruhe for modeling, specifying and verifying object-oriented programs, in particular JavaCard programs.

48. God Of The Machine We can, and should, admit that what would prove it wrong? Now is the timeon God of the machine when I play nice with the other blogchildren, http://www.godofthemachine.com/

About Archives Baseball Contact ... What Time Is It? NOW 2 Blowhards Agenda Bender Agitator Armavirumque ... Volokh/Non-Volokh AND THEN AC Douglas Banana Oil Blogcritics City Comforts ... Virginia Postrel RAGS Atlantic Monthly City Journal Commentary Economist ... Wired REFERENCE 1Up Encyclopedia Bartleby Bible Search BlackMask ... Zembla TECH Ant Apache Ars Technica CSS Master Grid ... WebMonkey Saturday, August 20, 2005 Break, Blow, Burn, Suck Camille Paglia very likely agrees with Woody Allen that 80% of life is showing up. Author, teacher, scholar, advice columnist, courageous defier of contemporary orthodoxies left and right, tireless propagandist for the rapist within, and so much more , Paglia doesn't just show up, she never goes away. As for the nature of this prodigious output, we have Sexual Personae Sex and Violence, or Nature and Art Sex, Art and American Culture Sex in New York City: An Illustrated History Madonna Megastar Sex and the Single Professor . Can anyone find the pattern here? Still, Paglia must weary of a single subject, and in Break, Blow, Burn she has ventured into poetry. The book is a "close reading" of 43 short poems ranging in time from Shakespeare to the present. One might think that so busy a woman as Paglia wouldn't have time to learn anything about poetry. She doesn't.

49. Project-Team-MACSI We present theoretical results concerning twomachine cases, we prove that thetwo-machine permutation flowshop with constant maximal time-lags is strongly http://www.inria.fr/rapportsactivite/RA2004/macsi2004/uid49.html

Inria Raweb 2004 Project-Team: MACSI HELP ... INDEX Using JavaScript allows access to folder Project-Team : macsi Section: New Results Keywords: Discrete optimization network of firms on line control production manufacturing planning maintenance predictive/proactive/reactive scheduling Simulation, optimization and decision making tools applied to industrial system control Stochastic optimization of inventory systems Participants: Jie Li, Alexandru Sava, Xiaolan Xie. Optimisation of manufacturing systems Participants: Iyad Mourani, Sophie Hennequin, Xiaolan Xie. We considered a continuous-flow model of a single machine with delay. We assume that the machine failure and repair are subject to a general distribution and the demand is constant. The machine is subject to time-dependent failure. Material flows continuously from outside the system to the first machine, and then waits a period of time called delay t for material transfer, before arriving to the buffer. The goal of this work is to find, by using IPA technique, the optimal buffer level (Hedging point), which minimizes the long run average cost Maintenance policy of manufacturing systems Participants: Anis Chelbi, S. Dellagi, Michael Fu, Mohamed Salah Ouali, Nidhal Rezg, Xiaolan Xie, X. Yao.

50. GamesIndustry.biz - Recent Revolution "leaks" Prove To Be Fake Recent Revolution leaks prove to be fake. Tue Fresh information on Nintendo sforthcoming machine not accurate. UK Charts Codemasters Brian Lara is http://www.gamesindustry.biz/content_page.php?aid=10511

51. Trusted Software And Trusted Compliers [Advanced Computing Project, Simulation, technologies as machine intelligence, advanced information systems, Simply stated, one applies formal methods to prove (mathematically) that a piece http://www.td.anl.gov/Programs/ti/advanced_comput/proj/trusted_software.html

Advanced Computing Trusted Software and Trusted Compliers Home Programs Technology Development Advanced Computing Projects Increasingly, we are asked to entrust our safety and even our lives to computer software. In the Boeing 777 aircraft, there is no direct mechanical link between the pilots' controls and the aircraft's control surfaces and engines. Instead, software reads the positions of the pilots' controls, and then commands the aircraft control surfaces to make the appropriate movements. What if the software issues the wrong commands? If your car has an antilock brake system, when you apply the brakes it is designed to release the brakes on individual wheels momentarily to prevent skids. What if the ABS system should release all the brakes for a substantial amount of time? When you use the cruise control on your car, it is supposed to shut off when you touch the brake. What if it doesn't? Should you really entrust such software with your life? You should not take too much comfort in the fact that the software has been tested, for testing can only find bugs. Testing can never show that no bugs are present, and even thoroughly tested software could manifest a bug the next time it is used!

52. WEIRD SCIENCE: 'Free Energy' Articles But honest companies just sit down and prove their claims beyond any doubt BEFORE Nmachine Homopolar Generator. Untried N-machine experiments http://www.amasci.com/freenrg/fnrg.html

WEIRD SCIENCE ELEKTROMAGNUM KEELYNET F/E LINKS ... SEARCH "Free Energy" Devices JUMP DOWN to links and articles. Also see F.E. Frequently Asked Questions WARNING WARNING WARNING! DO NOT GIVE MONEY TO PEOPLE INVOLVED IN "FREE ENERGY"!!!! Several legit researchers do exist, but they don't spend huge amounts on advertising like the scammers do. The people who pursue wide publicity are almost all scam artists. If someone is selling plans for "real" free-energy devices, they are a ripoff. Don't waste your money. Or if someone is selling "Dealerships" or investment opportunities for a free energy company, hold tight to your wallet and RUN! Or, if you've already let them get their hands on your money, ask to see proof of the FE device, and see what excuse you're given. (It will be a very convincing excuse. Scam artists don't act sneaky. Scam artists survive because they seem far MORE honest and honorable than a normal person. Remember that the "con" in "con game" means "confidence." They win your confidence first, then they go after your money.) How to tell the difference between a con game and a real product? Easy: if you give them money before receiving a working FE device, , then it's a scam, always. How can we tell a free energy scam from an honest FE company? Here are some symptoms of a scam:

53. Minds Or Machines So the question is, can a machine have experiences of the sort which this implies?Admittedly one cannot prove that this cannot be the case but, http://www.leaderu.com/truth/2truth04.html

Academics Humanities Social Sciences Sciences Theology ... Faculty Offices Departments Current Issues Publications Conferences/Events Apologetics ... What's New Special Interest Past Features Other Sites Help LU About LU ... Feedback Navigation Site Map Site Index Advanced Search Browsing Help ... LU Home LU Updates Receive LU-Announce Truth Journal MINDS OR MACHINES John Beloff Abstract: This episode is discussed at length by David Fryer in his Wheels within Wheels (Unpublished Ph.D. Thesis; Edinburgh, 1978) see Chap. 6 "Opinions on Pinions: An Eighteenth Century Turing Game". The inventor of the machine was von Kempelen, a brilliant mechanician who was a court councillor at the court of Empress Maria Theresa of Austria. It was there that the machine was first demonstrated in 1769. It was later taken on tour by the showman Maelzel. Poe published his reflections on it in the Southern Literary Messenger for April 1836. Maelzel had a chess-player among his entourage which gave rise to speculations as to who might have been the "ghost" in his machine. The school of psychology associated with James came to be known as the functionalists on account of their insistence on the efficacy of mind as a force in nature. However, unlike the present day Functionalists who are closer to the behaviorists, the original functionalists were dualists like James.

54. Long Bets [ 15: By 2050 No Synthetic Computer Nor Machine Intelligence Will Have It will be nothing more than a fancy inanimate object, a clever machine, After all, we cannot prove the existence of space or time eitherthese are http://www.longbets.org/15

Prediction return to On the Record: Predictions Status: Proposed Bet members: sign in Nova Spivack predicts: "By 2050 no synthetic computer nor machine intelligence will have become truly self-aware (ie. will become conscious)." (48 years) Spivack's Argument: (This summary includes my argument, a method for judging the outcome of this bet and some other thoughts on how to measure awareness...) A. MY PERSPECTIVE... Even if a computer passes the Turing Test it will not really be aware that it has passed the Turing Test. Even if a computer seems to be intelligent and can answer most questions as well as an intelligent, self-aware, human being, it will not really have a continuum of awareness, it will not really be aware of what it seems to "think" or "know," it will not have any experience of it's own reality or being. It will be nothing more than a fancy inanimate object, a clever machine, it will not be a truly sentient being. Self-awareness is not the same thing as merely answering questions intelligently. Therefore even if you ask a computer if it is self-aware and it answers that it is self-aware and that it has passed the Turing Test, it will not really be self-aware or really know that it has passed the Turing Test. As John Searle and others have pointed out, the Turing Test does not actually measure awareness, it just measures information processing-particularly the ability to follow rules or at least imitate a particular style of communication. In particular it measures the ability of a computer program to imitate humanlike dialogue, which is different than measuring awareness itself. Thus even if we succeed in creating good AI, we won't necessarily succeed in creating AA ("Artificial Awareness").

55. Stand To Reason Commentary - Weighing A Chicken With A Yardstick It may prove that it s possible for a machine to feel through its machinery whata human But it would not prove that a human being is a mere machine. http://www.str.org/free/commentaries/science/scisoul.htm

Commentaries Quick Studies Points to Ponder Reflections ... Site Tour Last Updated: August 19, 1996 Benefit from STR? Please help us continue. Weighing a Chicken With a Yardstick Print Commentary Email to a Friend Gregory Koukl Can science disprove the existence of the soul? Here Greg deals with advances in computer science and neurology, and the limitations of science. I received a letter from a listener last week. Some of you might remember the comment that I made about four or five weeks ago that it's impossible for science to prove that there is no soul. This gentleman was a bit bothered because he felt I was speaking in a vacuum, as it were, and I really didn't know what I was talking about, and making a comment like that not only misleads my listeners into having a false sense of confidence about this issue, but also to those who know better it makes me a little bit foolish. The writer goes on to say, "[Adler] goes on a step further and says that if science is ever able to produce a machine that can conceptualize on a conversational level it will prove that the brain is sufficient to explain the mind and therefore do away with the necessity of postulating an immaterial mind." Adler doesn't believe this is possible, but the way to disprove the existence of the mind and therefore undercut the Christian position is to produce a machine that can conceptualize on a conversational level. And if it can do that then it will do what we think it takes a mind to do. That would prove that a mind is not necessary and therefore, by inference, would prove that human minds don't exist and Christianity would be discredited.

56. GNER.co.uk > Press Releases 2005 > GNER’S FASTTICKET MACHINES PROVE TO BE C Great North Eastern Railway GNER - Buy online train tickets at gner.co.uk. http://www.gner.co.uk/GNER/PressCentre/PressReleases05/GNERS FASTTICKET MACHINES

[Skip Navigation] [Skip to text-based navigation] Today's top searches: Timetables Image Library GNER news Press releases 2005 ... GNER’S FASTTICKET MACHINES PROVE TO BE CHILD'S PLAY 8 February 2005 GNER’S FASTTICKET MACHINES PROVE TO BE CHILD'S PLAY BE PREPARED – use Fastticket! That’s the message from a group of Scouts who have been proving just how easy and convenient it is to use GNER’s self-service Fastticket machines for ticket purchases. The Fastticket machines make purchasing or collecting a rail ticket quick and easy. Using ‘touch-screen’ technology, the Fastticket machine is simple to use, with step-by-step instructions, and takes all major debit, credit and charge cards. Tickets are issued immediately for travel to destinations across the entire rail network. Customers can also use the Fastticket machines to collect tickets that have been pre-booked through GNER’s telesales booking service, which is particularly useful for travellers making journeys at short notice where there is insufficient time for tickets to be sent by post. This convenient way of purchasing and collecting tickets is proving a popular option with passengers, with 62 per cent more passengers over the past year. GNER spokesman John Gelson, says: “We have seen a huge rise in the number of passengers using Fastticket machines, and it is now the fastest growing channel for GNER ticket sales, seeing a growth of 52.5 per cent over the past year.

57. Peter Suber, "Turing Machines II" We will define a function about Turing machines themselves and prove that it is This completes the proof that L(n) is not computable by Turing machines. http://www.earlham.edu/~peters/courses/logsys/turing2.htm

Turing Machines II Peter Suber Philosophy Department Earlham College Uncomputable Functions ... Church's Thesis The last hand-out on Turing machines defined the basic concepts. This hand-out will apply them to the problem of computability and prove that not all functions can be computed by a Turing machine. As in the first hand-out , my exposition is based on those of George S. Boolos and Richard Jeffrey, Computability and Logic , Cambridge University Press, second edition, 1980; Gerald Massey, "On the Pedagogy of Turing Machines," The Computers and Philosophy Newsletter , 1,1 (Sept. 1986), 6-24; and Marvin Minsky, Computation: Finite and Infinite Machines , Prentice Hall, 1967. For the proofs that follow it will help to understand how to concatenate two T programs into one. We want to put two T programs end to end to make a third program that will run flawlessly with only minor revisions. To do this we take advantage of the conventions used in the first hand-out (1) that we read inputs from left to right and (2) that canonical halts leave the scanner on the leftmost digit of the output. With these conventions we need only stick the two programs back to back. The new program will perform the work of the first one first, and use its output as the input to the second. Two minor revisions are needed in the composite program. (1) Change the command names of the second program so that none coincides with any already used. This will guarantee consistency. The easy way to do this, if both programs use numerical command names and if the first program contains n consecutively numbered commands, is to add n to the number of each command in the second program. (2) Fill in the blanks of the table of the first program, where it would have halted, with the command to go to the first line of the second program. This will insure that the composite program will not halt until the second program has run.

58. Palm Beach Post - Columnists, Perspective, Opinion, Insight, Commentary On South Read bio. Elisa Cramer. Vaccine safe? Sure. prove it. No. Few good times in theghetto Keep cars from killing children A dirty diaper for atrisk kids http://www.palmbeachpost.com/opinion/content/opinion/columnists.html

var cxType = ""; Home News Local News State ... Help Click for Local Palm Beach Post columnists Local News Opinion Business Sports ... Features Local News Read bio George Bennett Politics: Commission told voters might cap revenue gusher from real estate Politics: Paper ballot retreat spurs long trail of discontent Commentary: Some colleagues shutter mouths on forecasting Greene's path Commentary: Paper trail impossible for 2005 election, Anderson says ... Read bio Glenn Henderson Storm scenes deserve some kind of prize Indulge voters with a ballot that has flair Jeanne peels roof off trailer Hurricanes whipsaw psyche throughout week of lows, highs ... Read bio Frank Cerabino Criminals should rob us, not evacuees Commentary: Boca asks who let nonresident dogs out at park Commentary: Boca brothel case got long, slow massage Katrina may bail PBC out of disaster ... Read bio Emily J. Minor Commentary: Immigration policy destroys a family Homeowners association rejects evacuees Commentary: Health care needs buffer from politics Commentary: Fingerprinting process for schools absurd ... Commentary: My Marlins can use your help to hit potential Opinion Read bio Tom Blackburn Proof that Catholics aren't robots 'Doing well' means doing worse 'Crown' rules (eminent) domain Not smart to pick on penguins ... Read bio Elisa Cramer Kids dumped into detention Bush, blacks. Look at the record

59. Time Machines Correspondingly, a proof of the physical impossibility of time machines wouldtake the form of showing that this assertion is false for the actual laws of http://plato.stanford.edu/entries/time-machine/

version history HOW TO CITE THIS ENTRY Stanford Encyclopedia of Philosophy A ... Z This document uses XHTML/Unicode to format the display. If you think special symbols are not displaying correctly, see our guide Displaying Special Characters last substantive content change NOV The Encyclopedia Now Needs Your Support Please Read How You Can Help Keep the Encyclopedia Free Time Machines 1. Introduction: time travel vs. time machines 2. What is a (Thornian) time machine? Preliminaries 3. When can a would-be time machine be held responsible for the emergence of CTCs? 4. No-go results for (Thornian) time machines in classical general relativity theory ... Related Entries 1. Introduction: time travel vs. time machine The topic of time machines is the subject of a sizable and growing physics literature, some of which has filtered down to popular and semi-popular presentations. The issues raised by this topic are largely oblique, if not orthogonal, to those treated in the philosophical literature on time travel. Most significantly, the so-called paradoxes of time travel do not play a substantial role in the physics literature on time machines. This literature equates the possibility of time travel with the existence of closed timelike curves (CTCs) or worldlines for material particles that are smooth, future-directed timelike curves with self-intersections.

60. The Tail Recursive SECD Machine While specifying the details of the inductive proof for the SECD machine, The correctness proof for the TRSECD machine requires roughly 50% more CPU http://www.cs.utexas.edu/users/boyer/ftp/nqthm/trsecd/trsecd.html

The Tail Recursive SECD Machine John D. Ramsdell The MITRE Corporation October 1996 Revised September 1997 Abstract. One method for producing verified implementations of programming languages is to formally derive them from abstract machines. Tail recursive abstract machines provide efficient support for iterative processes via the ordinary function calling mechanism. This document argues that the use of tail recursive abstract machines incurs only a small increase in theorem proving burden when compared with what is required when using ordinary abstract machines. The position is supported by comparing correctness proofs performed using the Boyer-Moore theorem prover. The cost of efficient support for iteration is small. Introduction More than twenty years ago, Gordon Plotkin published a famous paper that examines the relation between the Lambda Calculus and ISWIM, a programming language based on the Lambda Calculus ]. ISWIM has an operational semantics given by the SECD machine. The paper includes a proof that the semantics defined by the SECD machine is equivalent to a recursively defined function which implements applicative order evaluation of lambda terms. In that order, the bodies of lambda terms are not evaluated and the arguments of combinations are evaluated before they are substituted. For efficiently reasons, most programming languages in use today use applicative order evaluation. In addition, most functional programming languages require that their implementations be tail recursive. This means that programmers can use recursively defined functions to specify iterative processes.

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