The UIS Glossary includes statistical terms related to education, science, technology and innovation, culture, and communication & information . Some of the entries contain translations in one or more of the following languages: Arabic, English, French and Spanish. Other entries provide more detailed information, such as definitions, calculation formulas for indicators and sources. Indicators are marked with an asterisk (*).

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GERD in Purchasing Power Parities (PPPs) *

Total intramural expenditure on R&D performed during a specific reference period, expressed in Purchasing Power Parity dollars.
Source Definition
Adapted from OECD (2015), Frascati Manual 2015: Guidelines for Collecting and Reporting Data on Research and Experimental Development.
Data Source
R&D surveys.

DIRD en parité de pouvoir d’achat (PPA) *

Le total des dépenses intra-muros de la R-D pendant une période de référence donnée, exprimé en dollars de Parités de Pouvoir d'Achat.
Source de la définition
Adaptée de l’OCDE. (2016), Manuel de Frascati 2015: Lignes directrices pour le recueil et la communication des données sur la recherche et le développement expérimental.
Source de données
Enquêtes de R-D.

Gasto en I+D en paridad de poder adquisitivo (PPA) *

Gasto total en actividades internas de I+D a nivel local durante un año determinado expresado en paridad de poder adquisitivo en dólares de EE.UU.
Fuente(s) de la definición
Adaptada de la OCDE (2002), Manual de Frascati: Propuesta de Norma Práctica para Encuestas de Investigación y Desarrollo Experimental, §423.
Fuente(s) de datos
Encuestas de I+D.