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International Archives of the Photogrammetry, Remote Sensin g and Spatial Information Sciences, Vol XXXV, Part B6. Istanbul 2004
which operates No. 2 Internet service provider MSN plus e-
mail service Hotmail, says it blocks an average of 2.4 billion
spams per day" [Buseiness Week Magazine].
SPAM messages or ‘bulk e-mails! are becoming one of the
most critical problem for anyone who receives e-mails. They
are annoying messages containing advertisements and
unwanted information that every day fill our mailbox.
The name comes from “SPAM (Shoulder Pork and hAM,
SPiced hAM) Luncheon Meat”, canned ham produced by
Hormel Foods [SPAM, 2004]. For many users, the history of
SPAM is very short, but according to some persons, the first
SPAM was sent on May 1978, during the Arpanet period,
inviting people to a reception. The term got really popular in
1994, when two messages with subject “Global Alert for All:
Jesus is Coming Soon" and "Green Card Lottery - Final One?"
were posted to every single newsgroup on USENET, the
world's largest online conferencing system at that time. There
were several thousand such newsgroups, and each one got the
advertisement. Soon people called it SPAM and the word
started to be used for these kinds of unwanted and multiple
posted messages [Templetons, 2004]
Spammers use software to extract names and e-mail addresses
automatically from newsgroups or chat rooms; moreover
program called spambots spider the web looking for the @ sign,
that represents an e-mail address. The largest of these
companies are able to send billions of spam messages per day.
Spam filtering software is available on the market to stop
unwanted e-mails. They search keywords like “viagra”, “sex”,
“win”, etc, in the text or subject of the e-mails and stop them.
Unfortunately these filters can sometimes delete messages that
we really want to receive. ;
The strongest war against spam messages is the elimination of
e-mail address: then, if you want to send an e-mail, you have to
fill out an online form. Many business companies and the
White House of the United States itself, were forced to use this
Way.
ISPRS ON THE INTERNET
The International Society for Photogrammetry and Remote
Sensing is a non-governmental organization devoted to the
development of international cooperation for the advancement
of photogrammetry and remote sensing and their applications.
The Society operates without any discrimination on grounds of
race, religion, nationality or political philosophy. It was created
in 1910 as International Society for Photogrammetry (ISP),
under the leadership of its first President, Eduard Dolezal. After
70 years of functioning under its original name, the Society
changed its name in 1980 to the International Society for
Photogrammetry and Remote Sensing (ISPRS). Since 1994,
ISPRS is online, inserted in the global network to provide
information about its activities. In 1996, an ISPRS Working
Group (WG VI/4) was established especially for the Internet,
and was chaired by Tuan-chih Chen (1996-2000).
3.1 ISPRS Homepage
The ISPRS homepage has turned out to be one of the most
important components of ISPRS communications. It provides
up-to-date information about the society and links its the
various activities.
The first html pages regarding ISPRS where inserted on the
Internet by Andre' Streilen in December 1994, on a server
hosted at ETH Zurich, under the URL
http://www w.geod.ethz.ch/isprs. In September 1999, with to the
119
reservation of the international domain name 'isprs.org', all the
information were moved to a meaningful URL and nowadays
all different ISPRS activities can have an Internet address
ending on the suffix 'isprs.org'. After a short period in T.U. Delf,
in September 2000 the ISPRS server moved back to ETH
Zurich where it is actually hosted.
In April 2004, all the information regarding ISPRS are listed in
ca 700 HTML pages with approximately 25'000 lines of code;
moreover there are ca 1000 PDF files, i.e. a total of ca 2 GB of
data available.
3.2 ISPRS Publications
The publications of ISPRS are divided in seven categories: The
International Archives of Photogrammetry and Remote Sensing
and Spatial Information Sciences, The ISPRS Journal of
Photogrammetry and Remote Sensing, the ISPRS Highlights,
the Annual Report, the Silver and Blue Book and the ISPRS
Brochure.
An updated list of the International Archives is available at
httpz/Awww.isprs.org/publications/archives.html, with links to
the online proceedings.
Full articles published in the ISPRS Journal are instead
available at Elsevier Science web pages back to 1965
(http://www.elsevier.nl/locate/isprsjprs). Online access to
full text articles is available to those readers whose library has
subscribed to ISPRS Journal via ScienceDirect Digital
Collections, or has a current print subscription to ISPRS Journal
and has registered for ScienceDirect Web Editions.
3.3 Educational Resources and Job Opportunities
through ISPRS web site
The ISPRS educational page tries to collect the wide gamma of
educational material and software for Photogrammetry, Remote
Sensing and GIS available ‘on the’ ‘Internet
(http://www.isprs.org/links/tutorial.html).
It is nota complete list, but some pointers are listed about:
e Free software, in particular from CATCON, the Computer
Assisted Teaching contest organised by WG VI/2
(http://www.isprs.org/catcon). The main objective of the
CATCON contest is to promote the development and
dissemination of multimedia products, educational
information and simulation packages for computer assisted
teaching. In general, material submitted by contestants
should be non-commercial and provided free of charge for
not-for-profit use.
e Education, training, research and fellowship opportunities
in Remote Sensing, GIS and its applications.
(http:/www.ltid.inpe.br/dsr/tania/Rsdir/). It is an
educational Directory that has been developed in the period
1996-2000 as a task of ISPRS TCVI/WGI on education and
as part of the ISPRS Educational Opportunities Program. It
is a first attempt to providing a comprehensive directory of
education and training services in the remote sensing and
spatial information sciences. The Directory was developed
from an original document prepared some years ago by the
UN Office of Outer Space Affairs in Vienna. In this
directory it is possible to get information from all members
states that are involved in Space Science. The information
contained in this directory for each institution includes its
areas of specialisation, the educational and research
programmes offered, the facilities available, the
prerequisite qualifications, financial information,
fellowship opportunities and opportunities for international
