The textbook wisdom about the wild origins of the 860 million chickens eaten each year in Britain is overturned today, writes Roger Highfield.
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Worldnetzone: Computer, Internet, Science, Engineering, Technology Information
Computer, Internet, Science, Engineering and Technology Information
Plant growth experiment starts in Columbus
ESA astronaut Léopold Eyharts has activated the first experiment inside the European Columbus laboratory. The WAICO experiment, which investigates the effect of gravity on plant root growth, has started inside the module’s Biolab facility.
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You don’t know tech: The InfoWorld news quiz (InfoWorld)
InfoWorld - Seems like everything went down this past week — YouTube, Hotmail, iTunes DRM, and Google’s stock price among them. Can you pick up the pieces in our snarky news quiz? Some questions aren’t as easy as they look. Most answers are worth 10 points, and at least one is impossible to get wrong. Ready? Then let’s begin.
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Follow the launch of ATV ‘Jules Verne’ live from ESA sites across Europe
ESA PR 13-2008. With ESA’s Columbus laboratory successfully attached and operating on the International Space Station, the time has now come for another European milestone mission to leave for the ISS - that of the first Automated Transfer Vehicle (ATV), named ‘Jules Verne’.
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FTP:
FTP [26] is one of the most useful and powerful TCP/IP utilities for
the general user. FTP allows users to upload and download files
between local and remote hosts. Anonymous FTP, in particular, is
commonly available at file archive sites to allow users to access
files without having to pre-establish an account at the remote host.
TELNET might, in fact, be used for this purpose but TELNET gives the
user complete access to the remote system; FTP limits the user to
file transfer activities.
The general form of the FTP command is:
ftp [IP_address|host_name]
An FTP session can be initiated in several ways. In the example shown
below, an FTP control connection is initiated to a host (the Defense
Data Network’s Network Information Center) by supplying a host name
with the FTP command; optionally, the host’s IP address in dotted
decimal (numeric) form could be used. If neither host name nor IP
address are supplied in the command line, a connection to a host can
be initiated by typing open host_name or open IP_address once the FTP
application has been started.
The remote host will ask for a username and password. If a bona fide
registered user of this host supplies a valid username and password,
then the user will have access to any files and directories to which
this username has privilege. For anonymous FTP access, the username
anonymous is used. Historically, the password for the anonymous user
(not shown in actual use) has been guest, although most systems today
ask for the user’s Internet e-mail address (and several sites attempt
to verify that packets are coming from that address before allowing
the user to login).
The “help ?” command may be used to obtain a list of FTP commands and
help topics available with your software; although not always shown,
nearly all TCP/IP applications have a help command. An example of the
help for FTP’s type command is shown in the sample dialogue. This
command is very important one, by the way; if transferring a binary
or executable file, be sure to set the type to image (or binary on
some systems).
The dir command provides a directory listing of the files in the
current directory at the remote host; the UNIX ls command may also
usually be used. Note that an FTP data transfer connection is
established for the transfer of the directory information to the
local host. The output from the dir command will show a file listing
that is consistent with the native operating system of the remote
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The Two Fundamental Tools
TELNET:
TELNET [27] is TCP/IP’s virtual terminal protocol. Using TELNET, a
user connected to one host can login to another host, appearing like
a directly-attached terminal at the remote system; this is TCP/IP’s
definition of a virtual terminal. The general form of the TELNET
command is:
telnet [IP_address|host_name] [port]
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Juxtapose Folders 1.0b3
About Juxtapose Folders
Compares two folder for differences. Quickly see which files have changed and which files have been added or removed.
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Sciatrope 0.1
About Sciatrope
A Cocoa (MacOS X) application that helps preparing for, and observe a solar eclipse.
- It gives the eclipse circumstances, distance and direction to the central line.
- It supports the connection to a NMEA compatible GPS receiver, to input location and time.
- It starts actions (apple scripts, shell scripts or applications) at prescripted times during the eclipse. For signaling the proximity of eclipse contacts, controlling a camera, controlling a live broadcast or whatever you may imagine.
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MedINRIA 1.7.0
About MedINRIA
Allows to process and analyze a wide range of magnetic resonance (MR) images including anatomical MRI, functional MRI (fMRI), and diffusion tensor MRI (DT-MRI). MedINRIA is intended to be used by anyone curious about medical images!
MedINRIA is a suite of softwares, each of them targeting a specific clinical application. Main features include:
- 3D image visualization by tab-browsing (firefox-like);
- Neural fibers reconstruction and visualization from DT-MRI;
- Diffusion tensor field visualization using 3D ellipsoids;
- Manual segmentation slice by slice to define regions of interest;
- Compatibility with DICOM and Analyze 7.5 formats (and a lot more).
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CLC Protein Workbench 3.6.1
About CLC Protein Workbench
This 30 days of fully functional demo includes a vast amount of advanced protein sequence analyses — all analyses are integrated in one single user-friendly and intuitive software application.
Some analyses are
- Integrated 3D molecular viewer
- Two types of alignments
- Phylogenetics
- Secondary protein structure prediction
- Signal Peptide Prediction (SignalP)
- Transmembrane helix prediction (TMHMM)
- Motif search (known patterns)
- Motif search using regular expressions
- Motif search using ProSite patterns
- Many more features
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Download Queue 1.2
About Download Queue
A slim, but fully featured, download manager. It supports the http, https and ftp protocols including support for manual and auto-resume, acceleration using multiple connections per download, a bandwidth monitor and a full download history. Downloads can be scheduled to run, and optionally stop, automatically at a chosen time every day or just once at a particular time and date. Downloads can also be controlled manually.
A data transfer limit, including a “free” period, can now be setup in the preferences. To keep you on top of your data the Bandwidth inspector displays all data received, as well as the average data rate. You can even set Download Queue to stop all activity when your data limit is reached.
Once your files are downloaded you can open them from Download Queue, or move them anywhere you like just by dragging them to the Finder.
An optional Safari extension can be installed which adds Download Queue menu items to Safari’s context menu; it also enables direct adding of downloads when the Shift key is held down.
A Firefox extension is also available.
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Finger
The Finger program may be used to find out who is logged in on
another system or to find out detailed information about a specific
user. This command has also introduced a brand new verb; fingering
someone on the Internet is not necessarily a rude thing to do! The
Finger User Information Protocol is described in RFC 1288 [32]. The
most general format of the Finger command is:
finger [username]@host_name
Continue Reading…
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Ping
Ping, reportedly an acronym for the Packet Internetwork Groper, is
one of the most widely available tools bundled with TCP/IP software
packages. Ping uses a series of Internet Control Message Protocol
(ICMP) [22] Echo messages to determine if a remote host is active or
inactive, and to determine the round-trip delay in communicating with
it.
A common form of the Ping command, showing some of the more commonly
available options that are of use to general users, is:
ping [-q] [-v] [-R] [-c Count] [-i Wait] [-s PacketSize] Host
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NSLOOKUP
NSLOOKUP is the name server lookup program that comes with many
TCP/IP software packages. A user can use NSLOOKUP to examine entries
in the Domain Name System (DNS) database that pertain to a particular
host or domain; one common use is to determine a host system’s IP
address from its name or the host’s name from its IP address. The
general form of the command to make a single query is:
nslookup [IP_address|host_name]
If the program is started without any parameters, the user will be
prompted for input; the user can enter either an IP address or host
name at that time, and the program will respond with the name and address of the default name sever, the name server actually used to
resolve each request, and the IP address and host name that was
queried. Exit is used to quit the NSLOOKUP application.
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Finding Information About Internet Hosts and Domains
There are several tools that let you learn information about Internet
hosts and domains. These tools provide the ability for an application
or a user to perform host name/address reconciliation (NSLOOKUP),
determine whether another host is up and available (PING), learn
about another host’s users (Finger), and learn the route that packets
will take to another host (Traceroute).
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Newswire: ATLAS completes worldâs largest jigsaw puzzle
Today the ATLAS collaboration at CERN celebrates the lowering of its last large detector element. The ATLAS detector is the worldâs largest general-purpose particle detector, measuring 46 metres long, 25 metres high and 25 metres wide it weighs 7000 tonnes and consists of 100 million sensors that measure particles produced in proton-proton collisions in CERNâs Large Hadron Collider (LHC). The first piece of ATLAS was installed in 2003 and since then many detector elements have journeyed down the 100 metre shaft into the ATLAS underground cavern. This last piece completes this gigantic puzzle.
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Interactions.org Newsdigest 29 February 2008
Race to find dark matter — ALICE cherche la clé de lâUnivers dans le big bang — Time’s Sleight Of Hand — Physicists Search For Dark Matter Deep In Minnesota Mine
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Scientists to teach ‘toddlerbot’ to speak
A synthetic “toddlerbot” is to be taught language in a British-led effort to create humanoid robots which learn, think and talk. By Roger Highfield.
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Bats use same tricks as insect to fly
Bats use the same aerodynamic trick as flying insects do to stay aloft, much to the relief of scientists. By Roger Highfield.
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