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La parola deriva dal sostantivo latino informatio -nis dal verbo informarenel significato di "dare forma alla mente", "disciplinare", "istruire", "insegnare". Per rappresentarlo, si usa un alfabeto finito come nei calcolatori, quaternario invece che binariodove le lettere sono scelte tra A, C, G e T, le iniziali delle quattro componenti fondamentali. L'informazione e la sua elaborazione attraverso i computer hanno avuto certamente un impatto notevole nella nostra attuale vita quotidiana.

L'uso appropriato dell'informazione pone anche problemi etici di rilievo, come nel caso della riservatezza riguardo alle informazioni cliniche che potrebbero altrimenti avvantaggiare le compagnie di assicurazioni mediche e danneggiare i pazienti. Altre definizioni provengono dall' informatica e dalla telematica :. I computernati come semplici calcolatori, sono diventati col tempo dei potenti strumenti per memorizzareelaborare e analizzare informazioni. Fermandosi ai tipi di base abbiamo essenzialmente numeri e stringhe successioni finite di caratteri.

Inoltre, le basi di dati relazionali permettono la creazione di relazioni tra dati di diverse tabelle. Oltre alle relazioni esplicite, ci possono essere delle relazioni dedotte. Un esempio sono le ontologie. Secondo la Teoria dell'Informazione in una comunicazione, che avviene attraverso un dato alfabeto di simboli, l'informazione viene associata a ciascun simbolo trasmesso e viene definita come la riduzione di incertezza che si poteva avere a priori sul simbolo trasmesso.

I segnali che trasportano informazione non sono dunque segnali deterministici, ma processi stocastici. La codifica dell'informazione consiste nel trasformare una informazione generica in una informazione comprensibile da un dispositivo o che sia adatta alla successiva elaborazione. L'informazione consiste nella ricezione di un messaggio tra un insieme di possibili messaggi. La tutela dei dati personali risulta essere argomento di controversia, tra quelli che vorrebbero un libero scambio delle informazioni e quelli che vorrebbero delle limitazioni attraverso la tutela e il controllo.

Altri progetti. Da Wikipedia, l'enciclopedia libera. Disambiguazione โ€” Se stai cercando il quotidiano, vedi Informazione quotidiano. Altri progetti Wikiquote Wikizionario Wikimedia Commons. Portale Diritto. Portale Informatica. Portale Psicologia. Portale Scienza e tecnica. Categorie : Informazione Teoria dell'informazione.

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Wikimedia Commons Wikiquote. Lo stesso argomento in dettaglio: Privacy.Biennio I. Istituto d'Istruzione Superiore Francesco Alberghetti. Seguici su:. Home Informazioni Informazioni. Pubblicazione nuove classi Alberghetti 17 luglio Messa a Disposizione 16 luglio Nuove disposizioni inerenti l'organizzazione del servizio 27 maggio POLIS credenziali 11 maggio Bando di concorso premi allo studio - diplomati con l'AVIS 09 maggio Formazione a distanza: riflessioni di un insegnante 08 aprile Comunicazione della dirigente scolastica 14 marzo Messaggio del Direttore Generale Stefano Versari 12 marzo Proroga chiusura scuole 06 marzo Recupero password caselle mail istituzionali 04 marzo Una squadra dell'Alberghetti conquista la fascia argento alla gara nazionale delle olimpiadi delle scienze sperimentali 02 marzo Circolare del MIUR 23 febbraio Un ponte aereo per l'europa 13 febbraio Olimpiadi di Statistica 30 gennaio Borse di studio G.

Orientamento universitario 25 gennaio Borse di studio per programmi all'estero 03 ottobre Visite guidate gratuite al laboratorio didattico della fondazione Ducati 12 settembre Elenco Categorie.ASCII esteso ha una lunghezza di 8 bit, diversi personaggi. Strumenti correlati Conversione da esadecimale a decimale Conversione da decimale a esadecimale Conversione da ottale a decimale Conversione da decimale a ottale Conversione da binario a decimale Conversione da decimale a binario Tabella di ricerca ASCII Conversione di stringhe esadecimali in ASCII Conversione da stringa ASCII a esadecimale Conversione da frazioni a decimali Conversione frazionale-frazionaria Conversione da percentuale a decimale Conversione da decimale a percentuale Percentuale alla conversione frazionaria Punteggio alla conversione percentuale Conversione del colore esadecimale in RGB Conversione del colore RGB in esadecimale Conversione del colore esadecimale in RGBA Conversione del colore RGBA in colore esadecimale Tabella di confronto numeri romani Conversione di numeri romani in numeri arabi Conversione di numeri arabi in numeri romani.

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VAT included in all prices where applicable. View mobile website.It is the eighth-largest Brazilian State by population and the 17th by area. It is also one of the main tourist destinations in Brazil. The state capital is the city of Fortalezathe country's fourth most populous city.

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There are also mountains and valleys producing tropical fruits. Its surface is a succession of great terraces, facing north and northeast, formed by the denudation of the ancient sandstone plateau which once covered this part of the continent; the terraces are seamed by watercourses, and their valleys are broken by hills and ranges of highlands. Another range, or escarpment, crosses the state from east to west, but is broken into two principal divisions, each having several local names.

These ranges are not continuous, the breaking down of the ancient plateau having been irregular and uneven. The rivers of the state are small and, with one or two exceptions, become completely dry in the dry season. The largest is the Jaguaribewhich flows entirely across the state in a northeast direction. The higher ranges intercept considerable moisture from the prevailing trade winds, and their flanks and valleys are covered with a tropical forest which is typical of the region, gathering species from tropical forests, caatinga and cerrado.

The less elevated areas of the plateaus are either thinly wooded or open campo. Most of the region at the lower altitudes is characterized by scrubby forests called caatingaswhich is an endemic Brazilian vegetation. The soil is, in general, thin and porous and does not retain moisture; consequently, the long dry season turns the country into a barren desert, relieved only by vegetation along the riverways and mountain ranges, and by the hardy, widely distributed Carnauba Palm Copernicia ceriferawhich in places forms groves of considerable extent.

Some areas in the higher ranges of Serra da Ibiapaba, Serra do Araripe and others are more appropriate for agriculture, as their soil and vegetation are less affected by the dry seasons.

The beaches of the state is a major tourist attraction. In an earthquake measuring 5. The year is divided into a rainy and dry season, the rains beginning in January to March and lasting until June. The dry season, July to December, is sometimes broken by slight showers in September and October, but these are of slight importance.

Sometimes the rains fail altogether, and then a drought seca ensues, causing famine and pestilence throughout the entire region. The most destructive droughts recorded in the 18th and 19th centuries were those of, โ€”, โ€”, andthe last-mentioned known by local people as a Grande Seca"the Great Drought" destroying nearly all the livestock in the state, and causing the death through starvation and pestilence of nearly half a million people, or over half the population.

Because of the dams, the Jaguaribe River no longer dries up completely. The Indians and French formed political and military alliances.

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In October, that year Franciso Pinto was killed by the Indians and Pereira Filgueira returned with more information about the area and the French and Indian alliance. At this time, what is today Brazil was hotly disputed by the Dutch and the Portuguese. The area was invaded twice by the Dutch, in and in Good-quality silver was not found however.

Inthe Netherlands formally ceded their Brazilian territories to the Portuguese crown, ending conflict in the region. The captaincy became a province in under Dom Pedro I. A revolution followed inthe president of the province was deposed fifteen days after his arrival, and a republic was proclaimed.

Internal dissensions immediately broke out, the new president was assassinated, and after a brief reign of terror the province resumed its allegiance to the empire. Dams were also built for irrigation purposes. The population numberedinandin To use your Google Account on a browser like Chrome or Safariturn on cookies if you haven't already. Important: If you get a message that cookies are turned off, you need to turn them on to use your account. Cookies are files created by sites you visit.

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