Coming soon: superfast internet

Jonathan Leake, Science Editor

THE internet could soon be made obsolete. The scientists who pioneered it have now built a lightning-fast replacement capable of downloading entire feature films within seconds.

At speeds about 10,000 times faster than a typical broadband connection, “the grid” will be able to send the entire Rolling Stones back catalogue from Britain to Japan in less than two seconds.

The latest spin-off from Cern, the particle physics centre that created the web, the grid could also provide the kind of power needed to transmit holographic images; allow instant online gaming with hundreds of thousands of players; and offer high-definition video telephony for the price of a local call.

David Britton, professor of physics at Glasgow University and a leading figure in the grid project, believes grid technologies could “revolutionise” society. “With this kind of computing power, future generations will have the ability to collaborate and communicate in ways older people like me cannot even imagine,” he said.

The power of the grid will become apparent this summer after what scientists at Cern have termed their “red button” day - the switching-on of the Large Hadron Collider (LHC), the new particle accelerator built to probe the origin of the universe. The grid will be activated at the same time to capture the data it generates.

Cern, based near Geneva, started the grid computing project seven years ago when researchers realised the LHC would generate annual data equivalent to 56m CDs - enough to make a stack 40 miles high.

This meant that scientists at Cern - where Sir Tim Berners-Lee invented the web in 1989 - would no longer be able to use his creation for fear of causing a global collapse.

This is because the internet has evolved by linking together a hotchpotch of cables and routing equipment, much of which was originally designed for telephone calls and therefore lacks the capacity for high-speed data transmission.

By contrast, the grid has been built with dedicated fibre optic cables and modern routing centres, meaning there are no outdated components to slow the deluge of data. The 55,000 servers already installed are expected to rise to 200,000 within the next two years.

Professor Tony Doyle, technical director of the grid project, said: “We need so much processing power, there would even be an issue about getting enough electricity to run the computers if they were all at Cern. The only answer was a new network powerful enough to send the data instantly to research centres in other countries.”

That network, in effect a parallel internet, is now built, using fibre optic cables that run from Cern to 11 centres in the United States, Canada, the Far East, Europe and around the world.

One terminates at the Rutherford Appleton laboratory at Harwell in Oxfordshire.

From each centre, further connections radiate out to a host of other research institutions using existing high-speed academic networks.

It means Britain alone has 8,000 servers on the grid system – so that any student or academic will theoretically be able to hook up to the grid rather than the internet from this autumn.

Ian Bird, project leader for Cern’s high-speed computing project, said grid technology could make the internet so fast that people would stop using desktop computers to store information and entrust it all to the internet.

“It will lead to what’s known as cloud computing, where people keep all their information online and access it from anywhere,” he said.

Computers on the grid can also transmit data at lightning speed. This will allow researchers facing heavy processing tasks to call on the assistance of thousands of other computers around the world. The aim is to eliminate the dreaded “frozen screen” experienced by internet users who ask their machine to handle too much information.

The real goal of the grid is, however, to work with the LHC in tracking down nature’s most elusive particle, the Higgs boson. Predicted in theory but never yet found, the Higgs is supposed to be what gives matter mass.

The LHC has been designed to hunt out this particle - but even at optimum performance it will generate only a few thousand of the particles a year. Analysing the mountain of data will be such a large task that it will keep even the grid’s huge capacity busy for years to come.

Although the grid itself is unlikely to be directly available to domestic internet users, many telecoms providers and businesses are already introducing its pioneering technologies. One of the most potent is so-called dynamic switching, which creates a dedicated channel for internet users trying to download large volumes of data such as films. In theory this would give a standard desktop computer the ability to download a movie in five seconds rather than the current three hours or so.

Additionally, the grid is being made available to dozens of other academic researchers including astronomers and molecular biologists.

It has already been used to help design new drugs against malaria, the mosquito-borne disease that kills 1m people worldwide each year. Researchers used the grid to analyse 140m compounds - a task that would have taken a standard internet-linked PC 420 years.

“Projects like the grid will bring huge changes in business and society as well as science,” Doyle said.

“Holographic video conferencing is not that far away. Online gaming could evolve to include many thousands of people, and social networking could become the main way we communicate.

“The history of the internet shows you cannot predict its real impacts but we know they will be huge.”

Becareful with your appearance

The person had a quality that was paid low, like gold that was treated as brass, because of his appearance was bad. Then becareful with your appearance.

About Wish

Even more that were wanted by you, would even more that only were kept becoming the wish. The focus in one wish to enable the achievement of many wishes.
(Mario Teguh)

Be Original

You can not avoid the obligation to copy. Then copied, but confirmed that you had difficulty being imitated. By him, you became original. (Mario Teguh)

Word...

A word is a unit of language that represents a concept which can be expressively communicated with meaning. A word consists of one or more morphemes which are linked more or less tightly together, and has a phonetic value.

Typically a word will consist of a root or stem and zero or more affixes. Words can be combined to create other units of language such as phrases, clauses, and sentences. A word consisting of two or more stems joined together form a compound. A word combined with an already existing word or part of a word form a portmanteau.

Definitions

Further information: Lexeme and Lemma (linguistics)

Depending on the language, words can be difficult to identify or decipher. Dictionaries take upon themselves the task of categorizing a language's lexicon into lemmas. These can be taken as an indication of what constitutes a "word" in the opinion of the authors.

Word boundaries

In spoken language, the distinction of individual words is usually given by rhythm or accent, but short words are often run together. See clitic for phonologically dependent words. Spoken French has some of the features of a polysynthetic language: il y est allé ("He went there") is pronounced /i.ljɛ.ta.le/. Since the majority of the world's languages are not written, the scientific determination of word boundaries becomes important.

There are five ways to determine where the word boundaries of spoken language should be placed:

Potential pause

A speaker is told to repeat a given sentence slowly, allowing for pauses. The speaker will tend to insert pauses at the word boundaries. However, this method is not foolproof: the speaker could easily break up polysyllabic words.

Indivisibility

A speaker is told to say a sentence out loud, and then is told to say the sentence again with extra words added to it. Thus, I have lived in this village for ten years might become I and my family have lived in this little village for about ten or so years. These extra words will tend to be added in the word boundaries of the original sentence. However, some languages have infixes, which are put inside a word. Similarly, some have separable affixes; in the German sentence "Ich komme gut zu Hause an," the verb ankommen is separated.

Minimal free forms

This concept was proposed by Leonard Bloomfield in 1926. Words are thought of as the smallest meaningful unit of speech that can stand by themselves.^[1] This correlates phonemes (units of sound) to lexemes (units of meaning). However, some written words are not minimal free forms, as they make no sense by themselves (for example, the and of).^[2]

Phonetic boundaries

Some languages have particular rules of pronunciation that make it easy to spot where a word boundary should be. For example, in a language that regularly stresses the last syllable of a word, a word boundary is likely to fall after each stressed syllable. Another example can be seen in a language that has vowel harmony (like Turkish)^[3]: the vowels within a given word share the same quality, so a word boundary is likely to occur whenever the vowel quality changes. Nevertheless, not all languages have such convenient phonetic rules, and even those that do present the occasional exceptions.

Semantic units

Much like the above mentioned minimal free forms, this method breaks down a sentence into its smallest semantic units. However, language often contains words that have little semantic value (and often play a more grammatical role), or semantic units that are compound words.

A further criterion. Pragmatics.

As Plag suggests, the idea of a lexical item being considered a word should also adjust to pragmatic criteria. The word "hello", for example, does not exist outside of the realm of greetings being difficult to assign a meaning out of it. This is a little more complex if we consider "how do you do?": is it a word, a phrase, or an idiom? In practice, linguists apply a mixture of all these methods to determine the word boundaries of any given sentence. Even with the careful application of these methods, the exact definition of a word is often still very elusive.

There are some words that seem very general, but may truly have a technical definition, such as the word "soon," usually meaning within a week.

Orthography

Main article: Orthography

In languages with a literary tradition, there is interrelation between orthography and the question of what is considered a single word. Word separators (typically space marks) are common in modern orthography of languages using alphabetic scripts, but these are (excepting isolated precedents) a modern development (see also history of writing).

In English orthography, words may contain spaces if they are compounds or proper nouns such as ice cream or air raid shelter.

Vietnamese orthography, although using the Latin alphabet, delimits monosyllabic morphemes, not words. Conversely, synthetic languages often combine many lexical morphemes into single words, making it difficult to boil them down to the traditional sense of words found more easily in analytic languages; this is especially difficult for polysynthetic languages such as Inuktitut and Ubykh, where entire sentences may consist of single such words.

Logographic scripts use single signs (characters) to express a word. Most de facto existing scripts are however partly logographic, and combine logographic with phonetic signs. The most widespread logographic script in modern use is the Chinese script. While the Chinese script has some true logographs, the largest class of characters used in modern Chinese (some 90%) are so-called pictophonetic compounds (形声字, Xíngshēngzì).^[4] Characters of this sort are composed of two parts: a pictograph, which suggests the general meaning of the character, and a phonetic part, which is derived from a character pronounced in the same way as the word the new character represents. In this sense, the character for most Chinese words consists of a determiner and a syllabogram, similar to the approach used by cuneiform script and Egyptian hieroglyphs.

There is a tendency informed by orthography to identify a single Chinese character as corresponding to a single word in the Chinese language, parallel to the tendency to identify the letters between two space marks as a single word in the English language. In both cases, this leads to the identification of compound members as individual words, while e.g. in German orthography, compound members are not separated by space marks and the tendency is thus to identify the entire compound as a single word. Compare e.g. English capital city with German Hauptstadt and Chinese 首都 (lit. chief metropolis): all three are equivalent compounds, in the English case consisting of "two words" separated by a space mark, in the German case written as a "single word" without space mark, and in the Chinese case consisting of two logographic characters.

Morphology

Main article: Morphology (linguistics)

Further information: Inflection

In synthetic languages, a single word stem (for example, love) may have a number of different forms (for example, loves, loving, and loved). However, these are not usually considered to be different words, but different forms of the same word. In these languages, words may be considered to be constructed from a number of morphemes. In Indo-European languages in particular, the morphemes distinguished are

• the root
• optional suffixes
• a desinence.

Thus, the Proto-Indo-European *wr̥dhom would be analysed as consisting of

1. *wr̥-, the zero grade of the root *wer-
2. a root-extension *-dh- (diachronically a suffix), resulting in a complex root *wr̥dh-
3. The thematic suffix *-o-
4. the neuter gender nominative or accusative singular desinence *-m.

Classes

Main article: Lexical category

Grammar classifies a language's lexicon into several groups of words. The basic bipartite division possible for virtually every natural language is that of nouns vs. verbs.

The classification into such classes is in the tradition of Dionysius Thrax, who distinguished eight categories: noun, verb, adjective, pronoun, preposition, adverb, conjunction and interjection.

In Indian grammatical tradition, Panini introduced a similar fundamental classification into a nominal (nāma, suP) and a verbal (ākhyāta, tiN) class, based on the set of desinences taken by the word.