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Esperto di Semalt: una guida alla trasformazione di tabelle HTML in tabelle IO simmetriche

Una tabella input-output, scritta brevemente come IOT, descrive la relazione di acquisto e di vendita di consumatori e produttori all'interno di un sistema economico. In economia, il modello input-output è una tecnica economica quantitativa che rappresenta le interdipendenze di vari rami di un'economia regionale o nazionale. Wassily Leontief è la prima persona che ha sviluppato le tabelle input-output e input-output e le ha prodotte illustrando i flussi tra acquisti e vendite (finali e intermedi) dei prodotti del settore. Ha inoltre illustrato le vendite e gli acquisti di prodotti in uscita e ha vinto un premio Nobel in economia per i suoi contributi all'economia.

La banca dati delle tabelle di IO (input-output) riflette i meccanismi di altre risorse di dati quali statistiche sull'occupazione, consumo di energia, dati sull'inquinamento e dati sulla spesa per la ricerca e lo sviluppo; è principalmente raccolto da un'impresa o da un marchio ed è classificato in base al settore

Se stai cercando di trasformare una tabella HTML in una tabella IO (input-output), dovresti tenerne conto attenzione ai due principali presupposti. La prima ipotesi è "l'assunzione di tecnologia" e la seconda ipotesi è "l'assunzione della struttura di vendita fissa". L'ipotesi tecnologica è in grado di generare un IOT prodotto per prodotto prodotto dal Modello A (ipotesi di tecnologia del prodotto) o dal Modello B (ipotesi di tecnologia del settore). Il modello A presuppone che tutti i prodotti siano prodotti da soli, indipendentemente dalle industrie in cui vengono prodotti. E il modello B presuppone che ogni industria abbia i suoi modi specifici di produrre i prodotti, indipendentemente dal mix di prodotti, dalla natura e dai prezzi.

La trasformazione matematica della tabella HTML nella tabella IO (input-output) si basa su un modello descritto dal Manuale di approvvigionamento di Eurostat (Unione europea). È fatto attraverso i seguenti semplici passaggi:

Passaggio 1: Il primo passo prevede la revisione e la finalizzazione della fornitura e l'utilizzo della matrice.

Passaggio 2: nella seconda fase, le tabelle rettangolari o le tabelle HTML vengono trasformate nelle tabelle quadrate.

Passaggio 3: nella terza fase, la tabella HTML quadrata ai prezzi dell'acquirente viene convertita in SUT ad un prezzo base.

Passaggio 4: Qui, la trasformazione del SUT quadrato a un prezzo base in una tabella IO (input-output) simmetrica viene eseguita con o senza le matrici analitiche.

Misurazione delle tabelle IO (Input-Output):

La matematica delle tabelle input-output è piuttosto semplice e completa, ma i requisiti dei dati sono enormi. Questo perché le entrate e le spese di tutte le attività economiche devono essere incluse nei risultati finali. Pertanto, non tutte le industrie o le imprese sono in grado di raccogliere le informazioni richieste e la qualità dei dati varia anche da un settore all'altro. Vari paesi hanno fissato regole e regolamenti e sviluppato tecniche per stimare i conti di I/O (input-output) su base mensile, trimestrale o annuale, ei risultati sono accurati e affidabili. Con le tabelle I/O (input-output), è facile raccogliere e organizzare i dati da Internet e vengono utilizzati diversi strumenti per trasformarli in grafici. Tuttavia, il funzionamento e le funzionalità di ogni strumento sono diversi dagli altri. Tale strumento viene anche utilizzato per identificare i cluster di settore economicamente correlati.

George Forrest
Thank you all for your comments! I am glad you found the article helpful.
Philip Turner
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