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- 29.03.2014, 16:57. Almora в теме
«Космонавты или диссиденты?»
... glided on always home but so far away like a word misplaced nothing said what a waste when she had contact with the conflict there was meaning but she sold him to the state she had to turn around when she couldn t hold she folded a dissident is here escape is never the safest path a dissident a dissident is here she gave him away when she couldn t hold no she folded a dissident is here escape is never the safest path a dissident a dissident is here couldn t hold on she couldn t hold no she folded a dissident is here escape is never the safest place a dissident is here
- 03.10.2012, 18:19. Настейсия в теме
... of amateur and voluntary work in britain it takes place in universities as well playing in the university...
- 03.08.2012, 17:17. ikarus в теме
«Поконсультируйте заграничного человека»
... i had a first impression about mephi that it is a place where russia s high level nulear physics research is carried out and that graduates are qualified physicist who can easily be acepted to abroad universities but it turns out all different but thinking with common sense russia is one of the pioneers in nuclear physics and as far as i know mephi is the best russian university in this area therefore it seems that mephi has to be a very high quality place doesn t it
- 31.07.2012, 21:17. lamen в теме
«Нас хотят вооружить.»
... в этом городе и на этой улице а просто commercial place не отвечает что просто commercial place вы уже читать даже по-русски разучились что-ли...
- 31.07.2012, 16:38. FatCat в теме
«Нас хотят вооружить.»
... в этом городе и на этой улице а просто commercial place не отвечает ну извините в такой узкой постановке...
- 31.07.2012, 02:39. cube eyed в теме
«Нас хотят вооружить.»
... есть на что указывает 7 5 применения в commercial place из таблички вряд ли конечно такие случаи часты...
- 25.01.2012, 19:31. Лопотам в теме
«Кто к Макфолу не ходил - тот сурковская пропаганда!»
... or kim jong il s north korea the surveillance takes place in government in factories and in the education sector political conversations with foreigners is a crime punishable by three years of prison citation needed following an abortive attempt to replace english foreign language education with russian...
- 01.01.2012, 18:09. Лопотам в теме
... the four quarter days the change to 1 january took place in 1600 in scotland 2 since then 1 january has...
- 05.04.2011, 23:30. Aahz в теме
«Зачем рекламируют автомобили?»
... and medium rpm the range where most driving takes place performance is boosted without bulk less becomes...
- 11.11.2010, 01:06. Chameleon в теме
«Maxima на Corum'е»
... can be reevaluated with the correct parameters in place but just as a computer can guard against human error the human must not trust the computer unquestioningly all of these systems have limits and when those limits are reached it is quite possible for bizarre errors to result or in some cases answers which are actually wrong to say nothing of the fact that the people who programmed these systems were human and make mistakes to illustrate the limits of computer algebra systems we take the following example when given the integral integrate 1 sqrt 2-2 cos x from x -pi 2 to pi 2 mathematica 4 1 gives with no warnings 2 log 4 2 log cos pi 8 2 log sin pi 8 which n evalutates numerically to give 1 00984 maxima 5 6 returns the integral unevaluated the commercial macsyma says the integral is divergent and maple 7 says infinity cite maxima email list here had the person who wished to learn the result blindly trusted most of the systems in question he might have been misled so remember to think about the results you are given the computer is not always necessarily right and even if it gives a correct answer that answer is not necessarily complete a brief history of macsyma the birthplace of macsyma where much of the original coding took place was project mac at mit in the late 1960s and earlier 1970s projectmac was an mit research unit which was folded into the current laboratory for computer science research support for macsyma included the advanced research projects agency arpa department of defense the us department of energy and other government and private sources the original idea first voiced by marvin minsky was to automate the kinds of manipulations done by mathematicians as a step toward understanding the power of computers to exhibit a kind of intelligent behavior the undertaking grew out of a previous effort at mitre corp called mathlab work of carl engelman and others plus the mit thesis work of joel moses on symbolic integration and the mit thesis work of william a martin the new effort was dubbed macsyma project mac s symbolic manipulator the original core design was done in july 1968 and coding began in july 1969 this was long before the days of personal computers and cheap memory initial development was centered around a single computer shared with the artificial intelligence laboratory a dec pdp-6 this was replaced by newer more powerful machines over the years and eventually the mathlab group acquired its own dec-pdp-10 mit-ml running the its operating system this machine became a host on the early arpanet predecessor to the internet which helped it gain a wider audience as the effort grew in scope and ability the general interest it created led to attempts to port the code that is to take the series of instructions which had been written for one machine and operating system and adapt them to run on another different system the earliest such effort was the running of macsyma in a maclisp environment on a ge honeywell multics mainframe another system at mit the multics environment provided essentially unlimited address space but for various reasons the system was not favored by programmers and the multics implementation was never popular the next effort came about when a group at mit designed and implemented a machine which was based on the notion that hardware support of lisp would make it possible to overcome problems that inhibited the solution of many interesting problems the lisp machine clearly had to support macsyma the largest lisp program of the day and the effort paid off with probably the best environment for macsyma to date although requiring something of an expert perspective lisp machines as well as other special purpose hardware tended to become slow and expensive compared to off-the-shelf machines built around merchant-semiconductor cpus and so the two companies that were spun off from mit symbolics inc and lmi both eventually disappeared texas instruments built a machine called the explorer bases on the lmi design but also stopped production around 1980 the idea of porting macsyma began to be more interesting and the unix based vaxima distribution which ran on a lisp system built at the university of california at berkeley for vax unix demonstrated that it was both possible and practical to run the software on less expensive systems this system franz lisp was implemented primarily in lisp with some parts written in c once the code stabilized the new version opened up porting possibilities ultimately producing at least six variations on the theme which included macsyma maxima paramax paramacs punimax aljbar and vaxima these have followed somewhat different paths and most were destined to fade into the sunset the two which survived obscurity maxima and macsyma we will discuss below punimax was actually an offshoot of maxima some time around 1994 bruno haible author of clisp ported maxima to clisp due to the legal concerns of richard petti then the owner of the commercial macsyma the name was changed to punimax it has not seen much activity since the initial port and although it is still available the ability of the main maxima distribution to compile on clisp makes further development of punimax unlikely there is a certain surprising aspect in this multiplicity of versions and platforms given how the code seemed tied to the development environment which included a unique operating system fortunately berkeley s building a replica of the maclisp environment on the mit-ml pdp-10 using tools available in almost any unix c environment helped solve this problem complicating the matter was the eventual demise of the pdp-10 and maclisp systems as common lisp resembling lisp-machine lisp influenced by bbn lisp and researchers at stanford carnegie mellon university and xerox began to take hold it seemed sensible to re-target the code to make it compatible with what eventually became the ansi common lisp standard since almost everything needed for for macsyma can be done in ansi cl the trend toward standardization made many things simpler there are a few places where the language is not standardized in particular...