has its own operations center
Each network, be it the ARPAnet, NSFnet or a regional network,
has its own operations center. The ARPAnet is run by
BBN, Inc. under contract from DARPA. Their facility is
called the Network Operations Center or NOC. Cornell
University temporarily operates NSFnet (called the Network
Information Service Center, NISC). It goes on to the
regionals having similar facilities to monitor and keep
watch over the goings on of their portion of the Internet.
In addition, they all should have some knowledge of what is
happening to the Internet in total. If a problem comes up,
it is suggested that a campus network liaison should contact
the network operator to which he is directly connected. That
is, if you are connected to a regional network (which is
gatewayed to the NSFnet, which is connected to the
ARPAnet…) and have a problem, you should contact your
regional network operations center.

constructed, ranging from 45 to 180 brake horse-power; four of
these were single-crank engines one having nine and the other
three having seven cylinders
By 1913, eight different sizes of the Gnome engine were being
constructed, ranging from 45 to 180 brake horse-power; four of
these were single-crank engines one having nine and the other
three having seven cylinders. The remaining four were
constructed with two cranks; three of them had fourteen
cylinders apiece, ranged in groups of seven, acting on the
cranks, and the one other had eighteen cylinders ranged in two
groups of nine, acting on its two cranks. Cylinders of the
two-crank engines are so arranged (in the fourteen-cylinder
type) that fourteen equal angular impulses occur during each
cycle; these engines are supported on bearings on both sides of
the engine, the air-screw being placed outside the front
support. In the eighteen-cylinder model the impulses occur at
each 40 degrees of angular rotation of the cylinders, securing
an extremely even rotation of the air-screw.

_Hose._–All permanent lines from tanks and generators to the torches
are made with piping rigidly supported, but the short distance from the end
of the pipe line to the torch itself is completed with a flexible hose so
that the operator may be free in his movements while welding. An accident
through which the gases mix in the hose and are ignited will burst this
part of the equipment, with more or less painful results to the person
handling it. For that reason it is well to use hose with great enough
strength to withstand excessive pressure.

M. Laurent Seguin, the inventor of the Gnome rotary aero engine,
provided as great a stimulus to aviation as any that was given
anterior to the war period, and brought about a great advance in
mechanical flight, since these well-made engines gave a
high-power output for their weight, and were extremely smooth
in running. In the rotary design the crankshaft of the engine
is stationary, and the cylinders, crank case, and all their
adherent parts rotate; the working is thus exactly opposite in
principle to that of the radial type of aero engine, and the
advantage of the rotary lies in the considerable flywheel effect
produced by the revolving cylinders, with consequent evenness of
torque. Another advantage is that air-cooling, adopted in all
the Gnome engines, is rendered much more effective by the
rotation of the cylinders, though there is a tendency to
distortion through the leading side of each cylinder being more
efficiently cooled than the opposite side; advocates of other
types are prone to claim that the air resistance to the
revolving cylinders absorbs some 10 per cent of the power
developed by the rotary engine, but that has not prevented the
rotary from attaining to great popularity as a prime mover.

to that of the author for assumptions of earth pressure on the roofs of
tunnel arches, except that the vertical forces assumed to hold up the
weight of the earth have been ascribed to cohesion and friction, along
what might be termed the sides of the ‘trench excavation
For some time the writer has been using a process of reasoning similar
to that of the author for assumptions of earth pressure on the roofs of
tunnel arches, except that the vertical forces assumed to hold up the
weight of the earth have been ascribed to cohesion and friction, along
what might be termed the sides of the ‘trench excavation.’

This is available by FTP from ftp
The SRI NIC Maintained Interest-Groups List of Lists
This is available by FTP from ftp.nisc.sri.com (192.33.33.22) in the
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activities which increase popular understanding of the opportunities
and challenges posed by developments in computing and
telecommunications;

Fig
To explain this without being too technical, examine
Fig. 63, which shows a gyroscopic top, one
end of the rim A, which supports the rotating
wheel B, having a projecting finger C, that is
mounted on a pin-point on the upper end of the
pedestal D.

A simple form of spring jack is shown in section in Fig. 234. In Fig.
235 is shown a sectional view of a plug adapted to co-operate with
the jack of Fig. 234. In Fig. 236 the plug is shown inserted into the
jack. The cylindrical portion of the jack is commonly called the
_sleeve_ or _thimble_ and it usually forms one of the main terminals
of the jack; the spring, forming the other principal terminal, is
called the _tip spring_, since it engages the tip of the plug. The tip
spring usually rests on another contact which may be termed the
_anvil_. When the plug is inserted into the jack as shown in Fig. 236,
the tip spring is raised from contact with this anvil and thus breaks
the circuit leading through it. It will be understood that spring
jacks are not limited to three contacts such as shown in these figures
nor are plugs limited to two contacts. Sometimes the plugs have three,
and even more, contacts, and frequently the jacks corresponding to
such plugs have not only a contact spring adapted to register with
each of the contacts of the plug, but several other auxiliary contacts
also, which will be made or broken according to whether the plug is
inserted or withdrawn from the jack. Symbolic representations of plugs
and jacks are shown in Fig. 237. These are employed in diagrammatic
representations of circuits and are supposed to represent the
essential elements of the plugs and jacks in such a way as to be
suggestive of their operation. It will be understood that such symbols
may be greatly modified to express the various peculiarities of the
plugs and jacks which they represent.

Systems -Unix-based BBSs usually carrying usenet news, supporting e-mail
connectivity to the Internet, and with some mix of local archives, multi-
user games, etc
The `nixpub” list is a frequently updated list of Public-Access unix
Systems -Unix-based BBSs usually carrying usenet news, supporting e-mail
connectivity to the Internet, and with some mix of local archives, multi-
user games, etc. The full list is long (over 1,000 lines). To get a
current copy of `nixpub” as an automatic e-mail reply, Send a message to
`nixpub@digex.com” (no subject or message text needed), or to
`archive-server@cs.widener.edu” with message body of one of these: