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Topic: Sieve


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  Sieve Home Page
Sieve is a multi-vendor effort that has been discussed in various technical and standards-oriented public and private meetings since at least 1994.
Sieve is not intended as a replacement for the basis of any particular existing tool per se, although its design is informed by the experience with many existing tools.
Sieve is not a once-and-for-all solution for pressing problems addressed by filtering, such as anti-Spam efforts, although it certainly is intended to facilitate construction of such solutions.
www.fastmail.fm /docs/sieve/index.html   (1873 words)

  
  Sieve of Eratosthenes - Wikipedia, the free encyclopedia
In mathematics, the Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to a specified integer.
It is the predecessor to the modern Sieve of Atkin, which is faster but more complex.
Wheel factorization is often applied on the list of integers to be checked for primality, before Sieve of Eratosthenes is used, to increase the speed.
en.wikipedia.org /wiki/Sieve_of_Eratosthenes   (283 words)

  
 Sieve (mail filtering language) - Wikipedia, the free encyclopedia
Sieve is a language that can be used to create filters for electronic mail.
It was specified in RFC 3028, although the IETF is currently revising the language and its common extensions.
Sieve differs from traditional programming languages in that it is highly limited - the base standard has no variables, and no loops, preventing runaway programs, and limiting the language to simple filtering operations.
en.wikipedia.org /wiki/Sieve_(mail_filtering_language)   (367 words)

  
 PlanetMath: Brun's pure sieve
The sieve of Eratosthenes is based on the principle of inclusion-exclusion in the form
This inequality is stronger than the one obtained by an application of the sieve of Eratosthenes.
This is version 7 of Brun's pure sieve, born on 2004-02-21, modified 2006-09-01.
www.planetmath.org /encyclopedia/BrunsPureSieve.html   (515 words)

  
 Sieve
Sieve components may also be statically combined into complex analysis applets, as seen in this example applet, Composite Block and Plane Simulation.
Sieve is a Java-based collaborative interactive modular visualization environment (CIMVE).
Collaboration in Sieve is further supported by a miniature workspace overview showing the viewpoints of all collaborators.
simon.cs.vt.edu /sieve   (250 words)

  
 Sieve Glossary Term
Sieves are made of a variety of materials including stainless steel, tinned steel, aluminum, nylon, and cloth.
Sieves with a medium mesh contain a coarse screen with a hole that is approximately 1/16 inch in size.
Sieves with a fine mesh have a mesh hole that is approximately 1/32 inch in size.
www.recipetips.com /glossary-term/t--34412/sieve.asp   (315 words)

  
 Sieve, Server-Side E-mail Filter at Nada
Sieve is a mail filtering language for sorting e-mail.
Sieve is a language for e-mail filtering, originally designed by Tim Showalter.
Sieve has a vacation functionality that is similar the "vacation" program on Unix.
www.nada.kth.se /datorer/e-post/sieve-at-nada.shtml   (774 words)

  
 Using Sieve for Filtering
Sieve is a specialized standard filtering syntax/language and is not intended to be a complete programming language.
Sieve is not intended as a replacement for the basis of a specific existing tool.
Sieve is not a once-and-for-all solution for pressing problems addressed by filtering, such as anti-Spam efforts, although it can facilitate construction of such solutions.
www.cmu.edu /computing/documentation/sieve/sieve.html   (919 words)

  
 P versus Sieve
Sieve scripts are executed during final delivery, when the message is moved to the user-accessible mailbox.
If we "extend" Sieve to apply it to HTTP adaptations, we (a) would not be able to reuse much and (b) may have to violate a couple of existing Sieve Core rules.
Sieve does not allow for code or computation reuse (i.e., functions and variables) because creators view reuse as a security model violation (not sure why, but it seems to be a common misconception) P may allow for some code and computation reuse, hopefully without significantly increasing vulnerability of compliant interpreters.
www.imc.org /ietf-openproxy/mail-archive/msg03199.html   (866 words)

  
 Sieve - Wikipedia, the free encyclopedia
sieve (category theory), a way of writing down how objects in a category glue to give other ones
Sieve (mail filtering language), a proposed standard for specifying mail filters
In metaphor and simile, sieve may often be used to refer to things that are leaky, as a sieve used for a bowl
en.wikipedia.org /wiki/Sieve   (158 words)

  
 Molecular Sieve Encyclopedia Article @ NaturalResearch.org (Natural Research)   (Site not responding. Last check: )
A molecular sieve is a material containing tiny pores of a precise and uniform size that is used as an adsorbent for gases and liquids.
Molecular sieves are usually utilized in the petroleum industry, especially with purification of gas streams.
Scientists are about to test microscopic sieves that trap environmentally destructive greenhouse gases before they escape coal-fired power stations and refineries.
www.naturalresearch.org /encyclopedia/Molecular_Sieve   (302 words)

  
 G. Sieve: ZoomInfo Business People Information
Sieve's summary was automatically generated using 2 references found on the Internet.
Sieve is a native of Carroll, Iowa, and holds a bachelor's degree from Iowa State University, located in Ames, where he first exhibited his interest in photography while studying journalism.
Sieve received his master's degree in journalism in 1991 from the University of Missouri-Columbia, where he studied photojournalism, magazine editing and production, and newspaper and magazine design.
www.zoominfo.com /people/sieve_g._318424858.aspx   (507 words)

  
 Fast implementation of the segmented sieve of Eratosthenes
The first term is related to the number of expected multiples of the sieving primes belonging to [P,Q], and the second is related to the overhead incurred in the computation of the first multiple, not smaller than P, of each sieving prime.
To do this, the first multiple (belonging to the interval being sieved) of each sieving prime is computed, the subinterval where this multiple lies is identified, and the prime and respective multiple are placed in the appropriate list.
Simple implementation [12k, gziped tar archive] of the segmented sieve of Eratosthenes, released under the version 2 (or any later version) of the GNU general public license.
www.ieeta.pt /~tos/software/prime_sieve.html   (1054 words)

  
 SieveFAQ - FastMailWiki   (Site not responding. Last check: )
A sieve in its original context is a device used for filtering coarse material from a mixture.
Sieve is a language designed specifically to become the standard language for managing email flows.
Sieve scripts can be used to automatically delete or forward messages, to send autoreplies, to sort them in folders, (on IMAP servers) to mark messages as read or flagged, to test messages for spam or viruses, to reject messages at or after delivery, and even to replace MIME parts of a message.
wiki.fastmail.fm /index.php/SieveFAQ   (1810 words)

  
 BitSieve (ELib API)
The size of the sieve is assumed to be constant to reduce overhead.
To reduce storage space and increase efficiency, no even numbers are represented in the sieve (each bit in the sieve represents an odd number).
The length of the sieve generated by this constructor was chosen for performance; it controls a tradeoff between how much time is spent constructing other sieves, and how much time is wasted testing composite candidates for primality.
www.erights.org /javadoc/java/math/BitSieve.html   (437 words)

  
 Sieve Networks
Sieve, (n) siv, a device used to separate desirable particles from undesirable ones.
Sieve Networks is a network infrastructure consulting firm providing comprehensive secure network solutions for small to large businesses.
Sieve Networks has the flexibility to customize our Network Security Consulting Services to fit your specific needs no matter the size.
www.sievenetworks.com   (97 words)

  
 RFC 3028 (rfc3028) - Sieve: A Mail Filtering Language
Scripts written in Sieve are executed during final delivery, when the message is moved to the user-accessible mailbox.
Capability Transport As the range of mail systems that this document is intended to apply to is quite varied, a method of advertising which capabilities an implementation supports is difficult due to the wide range of possible implementations.
Parsing The Sieve grammar is separated into tokens and a separate grammar as most programming languages are.
www.faqs.org /rfcs/rfc3028.html   (7889 words)

  
 Photon Sieve
This Photon Sieve lens was developed for the focusing and imaging of soft-X rays (www.photonsieve.de).
A Photon Sieve lens is constructed using the same techniques used to make Zone Plates, that is: a drawing on paper of an enlarged and negative version of a Photon Sieve is made, a photographic image of that drawing is taken using high contrast film and then processed in high contrast developer.
The Pinhole Sieve also meets the requirement that its pinholes are positioned such that the optical path length from the source via the center of the pinholes to the focal point is an integral number of wavelengths.
ca.geocities.com /penate@rogers.com/sieve/photonsieve.html   (528 words)

  
 Sieve Firewall - VMTN Virtual Appliances Directory   (Site not responding. Last check: )
Sieve uses the concept to provide an unprecedented feature set to a Windows OS user, including powerful and flexible iptables firewalling and netfilter traffic control.
Sieve's Zones and Filters let you easily give Accounting and Marketing access to the web services but not SMB shares or administrative ports, and Administrators access to everything.
With Sieve, you can give local users wide open access to the server, remote users throttled access to protect the T-1 connection, and limit WSUS by creating a zone for the upstream server and throttling it back to 56k.
www.vmware.com /vmtn/appliances/directory/245   (1854 words)

  
 Using Sieve on the SCS IMAP servers - CMU/SCS Computing Facilities
A fuller explaination of the Sieve language can be found here (off-site link, will open in a new window).
Sieve scripts are simply text files that are uploaded to, and run on, the IMAP server.
Sieve scripts have the capability to delete or otherwise lose your e-mail if they are incorrectly written.
www.cs.cmu.edu /~help/mail_news/imapsieve.html   (2283 words)

  
 Figures
Figure 2 : Reconstruction of the Structure of sieve elements exposed to different degrees and forms of injury.
Figure 8 : Reaction of intact sieve elements to injury incurred by a "small tip" microelectrode.
This film shows a time scan of the reaction of sieve elements to intense laser light (see for further specification of the laser irradiation and a precise description of the events, legend of figure 6 and in Knoblauch and Van Bel, The Plant Cell 10, 35-50, 1998).
www.uni-giessen.de /~gf1114/rgvbel/index.htm   (282 words)

  
 Introduction to Sieve in the SCS Environment
The command set of sieve is somewhat limited, in an attempt to reduce the possibility of mail loops (or similiar effects of clever behavior).
The most notable difference between sieve scripts and.maildelivery scripts is that the sieve subsystem is contained; sieve does not allow the user to run arbitrary external scripts or programs against incoming mail.
Sieve scripts execute in order, and will generally try to keep processing mail until told to stop (either implictly by using a command like fileinto, or explicitly).
www.cs.cmu.edu /afs/cs.cmu.edu/Web/People/help/mail_news/intro.sieve.html   (1832 words)

  
 Crunch big numbers with GT3 using a quadratic sieve
The quadratic sieve method of factoring depends upon being able to create a set of numbers whose factorization can be expressed as a product of pre-chosen primes.
Although the number field sieve (NFS) is heuristically faster than QS, QS is still the algorithm of choice for numbers between 50 and 110 digits.
The quadratic sieve algorithm is based in code from Dario Alejandro Alpern; on this site he talks about factoring with the sieve and presents a nifty online application for factoring with the elliptic curve method.
www.ibm.com /developerworks/grid/library/gr-factor   (1743 words)

  
 Sieves, Sieve Shakers, Sieve Covers and Receiving Pans, Compact Ultrasonic Test Sieve Cleaner, Sieve Calibration ...
Sieve Calibration Standards Sieve Calibration Standards and other Sieves products are now available to order from the Cole Parmer Instrument Catalog.
Sieve Covers and Receiving Pans Sieve Covers and Receiving Pans and other Sieves products are now available to order from the Cole Parmer Instrument Catalog.
Sieves Sieves and other Sieves products are now available to order from the Cole Parmer Instrument Catalog.
www.coleparmer.com /catalog/catalog_toc_proc.asp?cls_id=2869&cat=1   (358 words)

  
 mozdev.org - sieve: index
Sieve is a powerful script language for server-side mail filtering.
Many IMAP Server are already sieved, this means capable of running sieve filters.
So be careful, Sieve is a powerful mail filter, loss of data is likely when you miss configure a script.
sieve.mozdev.org   (305 words)

  
 General number field sieve   (Site not responding. Last check: )
It is derived from the special number field sieve.
When the term "number field sieve" is used without qualification, it refers to the general number field sieve.
It is an improvement of the quadratic sieve, which factors n by finding numbers k
www.serebella.com /encyclopedia/article-General_number_field_sieve.html   (1025 words)

  
 Eratosthenes
This button starts the sieve, which will run to completion (unless it is interrupted).
Overwriting the number in the text field will cause the next largest prime to be displayed (within the range of primes found by the sieve).
Sieve is the class that calls all others.
www.math.utah.edu /~alfeld/Eratosthenes.html   (1967 words)

  
 NFSNET
The number field sieve (NFS) is the asymptotically fastest known algorithm for factoring large composite integers which have no known special form.
The number field sieve is particularly efficient for numbers of the form: N=r^e+s where r and s are small.
Even a basic description of the number field sieve is beyond the scope of this FAQ however there are several books that provide excellent descriptions CFRAC and the QS and go further to explain at least the basics of the number field sieve.
www.nfsnet.org /faq-nfs.html   (510 words)

  
 Super Sieve
The ancient Greek mathematician Eratosthenes-who was also first to calculate the earth's correct circumference-proposed a mechanical sieve to filter prime numbers by sorting out all multiples of those numbers that were not themselves multiples of other numbers.
This "Sieve of Eratosthenes" was an excellent idea but, as so often happens, the visionary inventor found it impossible to build the device with technology available during his lifetime.
It does so by using a small sieve array (255 bytes) over and over again and doing it with a USR machine language call from BASIC.
www.atarimagazines.com /v7n7/SuperSieve.html   (688 words)

  
 Sieve Mail Filtering Language (sieve) Charter
The sieve mail filtering language specified in RFC 3028 has now been
The sieve working group is being chartered to:
Sieve Email Filtering: MIME part Tests, Iteration, Extraction, Replacement and Enclosure (30556 bytes)
www.ietf.org /html.charters/sieve-charter.html   (299 words)

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