COLLECTED BY

Organization: Archive Team

Formed in 2009, the Archive Team (not to be confused with the archive.org Archive-It Team) is a rogue archivist collective dedicated to saving copies of rapidly dying or deleted websites for the sake of history and digital heritage. The group is 100% composed of volunteers and interested parties, and has expanded into a large amount of related projects for saving online and digital history.

History is littered with hundreds of conflicts over the future of a community, group, location or business that were "resolved" when one of the parties stepped ahead and destroyed what was there. With the original point of contention destroyed, the debates would fall to the wayside. Archive Team believes that by duplicated condemned data, the conversation and debate can continue, as well as the richness and insight gained by keeping the materials. Our projects have ranged in size from a single volunteer downloading the data to a small-but-critical site, to over 100 volunteers stepping forward to acquire terabytes of user-created data to save for future generations.

The main site for Archive Team is at archiveteam.org and contains up to the date information on various projects, manifestos, plans and walkthroughs.

This collection contains the output of many Archive Team projects, both ongoing and completed. Thanks to the generous providing of disk space by the Internet Archive, multi-terabyte datasets can be made available, as well as in use by the Wayback Machine, providing a path back to lost websites and work.

Our collection has grown to the point of having sub-collections for the type of data we acquire. If you are seeking to browse the contents of these collections, the Wayback Machine is the best first stop. Otherwise, you are free to dig into the stacks to see what you may find.

The Archive Team Panic Downloads are full pulldowns of currently extant websites, meant to serve as emergency backups for needed sites that are in danger of closing, or which will be missed dearly if suddenly lost due to hard drive crashes or server failures.

Collection: ArchiveBot: The Archive Team Crowdsourced Crawler

ArchiveBot is an IRC bot designed to automate the archival of smaller websites (e.g. up to a few hundred thousand URLs). You give it a URL to start at, and it grabs all content under that URL, records it in a WARC, and then uploads that WARC to ArchiveTeam servers for eventual injection into the Internet Archive (or other archive sites).

To use ArchiveBot, drop by #archivebot on EFNet. To interact with ArchiveBot, you issue commands by typing it into the channel. Note you will need channel operator permissions in order to issue archiving jobs. The dashboard shows the sites being downloaded currently.

There is a dashboard running for the archivebot process at http://www.archivebot.com.

ArchiveBot's source code can be found at https://github.com/ArchiveTeam/ArchiveBot.

TIMESTAMPS

The Wayback Machine - https://web.archive.org/web/20220521182617/https://sites.google.com/site/build2last43dp/

Build-to-Last: Strength to Weight 3D Printed Objects

ACM Transactions on Graphics (ACM SIGGRAPH 2014)

Lin Lu¹ Andrei Sharf² Haisen Zhao¹ Yuan Wei¹ Qingnan Fan¹ Xuelin Chen¹ Yann Savoye² Changhe Tu¹ Daniel Cohen-Or³ Baoquan Chen¹

^{¹Shandong University
²Ben-Gurion University
³Tel Aviv University}

Figure 1: We reduce the material of a 3D kitten (left), by carving porous in the solid (mid-left), to yield a honeycomb-like interior structure which provides an optimal strength-to-weight ratio, and relieves the overall stress illustrated on a cross-section (mid-right). The 3D printed hollowed solid is built-to-last using our interior structure (right).

Abstract: The emergence of low-cost 3D printers steers the investigation of new geometric problems that control the quality of the fabricated object. In this paper, we present a method to reduce the material cost and weight of a given object while providing a durable printed model that is resistant to impact and external forces.

We introduce a hollowing optimization algorithm based on the concept of honeycomb-cells structure. Honeycombs structures are known to be of minimal material cost while providing strength in tension. We utilize the Voronoi diagram to compute irregular honeycomb-like volume tessellations which define the inner struc ture. We formulate our problem as a strength–to–weight optimiza tion and cast it as mutually finding an optimal interior tessellation and its maximal hollowing subject to relieve the interior stress. Thus, our system allows to build-to-last 3D printed objects with large control over their strength-to-weight ratio and easily model various interior structures. We demonstrate our method on a collection of 3D objects from different categories. Furthermore, we evaluate our method by printing our hollowed models and measure their stress and weights.

Video:

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Downloads:

Paper [PDF 27.4MB]
Demo Video [ZIP, 29.7MB]
Data [ZIP] Coming very soon..

BibTex:

@ARTICLE{Lu:2014,
author = {Lu, Lin and Sharf, Andrei and Zhao, Haisen and Wei, Yuan and Fan, Qingnan and Chen, Xuelin and Savoye, Yann and Tu, Changhe and Cohen-Or, Daniel and Chen, Baoquan},
title = {Build-to-last: Strength to Weight 3D Printed Objects},
journal = {ACM Trans. Graph.},
issue_date = {July 2014},
volume = {33},
number = {4},
month = jul,
year = {2014},
issn = {0730-0301},
pages = {97:1--97:10},
articleno = {97},
numpages = {10},
url = {http://doi.acm.org/10.1145/2601097.2601168},
doi = {10.1145/2601097.2601168},
acmid = {2601168},
publisher = {ACM},
address = {New York, NY, USA}
}

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