Internet use among children in the EU27 is widespread and growing continually. The results of the
Eurobarometer on “Internet safety” conducted in 2005/06 showed that 68% of children (6 to 17 yearsof-
age) – in the opinion of one of their parents – had gone online4; this proportion increased to threequarters
for this 2008 survey.
Nevertheless, the number of children using the Internet varied considerably across Europe. The
proportion of parents who thought that their child (6 to 17 years-of-age) used the Internet was the
lowest in Italy (45%), Greece and Cyprus (both 50%).
As senior editor for this text, the responsibility to acknowledge and thank all the individuals who
have contributed their expertise, time, energies, and efforts to the successful development of this
text falls to me. This is no easy task. It is difficult to put into words the appreciation and gratitude I
have for each of their efforts and to express appropriately to each of them my sincere thanks for
giving their time and themselves to make this text a better product.
RFC 2821 is a recent update to the venerable RFC 821, which dates from the early
1980s. It defines the Simple Mail Transfer Protocol or SMTP. It specifies how to
send mail round the network. For most people it’s not very interesting, but it does
impose some restrictions such as the basic line length limit. Apart from this problem
(which Microsoft abuses), most mail systems adhere to SMTP.
Key planning considerations for federal agencies include recognizing that the
transition is already under way, because IPv6-capable software and
equipment already exists in agency networks. Other important agency
planning considerations include developing inventories and assessing risks;
creating business cases that identify organizational needs and goals;
establishing policies and enforcement mechanisms; determining costs; and
identifying timelines and methods for transition.
ADC's tactical cables provide factory standard
guaranteed performance specifications. They
are 100% optically tested and are offered with
a variety of optical performance levels.
• 245/900 or 500/900 μm polyester buffer
• Flame retardant polyurethane jacket
• Survives repeated abuse, tangling and knots
• Superior abrasion resistance
• Excellent performance at extreme
• Compatible with all industry standard
The EU is considering a proposal to introduce filters for blocking of
child abuse websites. European Digital Rights urges the Parliament
and Council to rethink these plans. Child abuse and its portrayal on
the Internet is a terrible crime that is sometimes of a severity that is
scarcely believable. It must be treated seriously, with policies based
on evidence and effectiveness and not on politics or gut reactions.
We must avoid policies which give Member States the opportunity to
adopt cosmetic measures that we have already seen being used as a
replacement for real action.
Comorbidity, which signiﬁes the simul-
taneous occurrence in a person of two
or more disorders, is a topic of consid-
erable and growing interest in the
context of health care. Research sup-
ports the view that a number of men-
tal disorders (e.g. depression, anxiety,
substance abuse) occur in people suf-
fering from both non-communicable
and communicable diseases more
often than would be expected by
chance. And people suffering from
chronic physical conditions have a
greater probability of developing
mental disorders such as depression.
Archimedes and Sons, Inc. is a developer and distributor of science and mathematics training programs aimed at
community colleges and technical schools. Rather than provide CD-ROMs, which the technically-adept students tend
to copy prolifically for their friends (thereby depriving A & S of their revenue), the firm provides interactive web-based
training to user accounts (which are still abused, but less so).
Electronic mail on the Internet has been an important form of communication for
some years now. Various methods of securing electronic mail have been suggested
(see our overview in section 2.5). One of the solutions that has seen commercial
success is S/MIME. A major problem in using S/MIME to secure mail is locating
certiﬁcates. Clients often support several methods to locate certiﬁcates, e.g., from
LDAP servers or from white-pages on the Internet.
Chapter 13 - Auctions, portals, and communities. After reading this chapter, you will be able to: Describe the major types of auctions, their benefits and costs, and how they operate. Understand when to use auctions in a business. Recognize the potential for auction abuse and fraud. Describe the major types of Internet portals. Understand the business models of portals.