منابع مشابه
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Recent attempts to develop an HIV-1 vaccine indicate that viral replication can be limited by the induction of viral-specific T cell responses; however, recent trials of vaccine candidates designed to target CD8+ T cell responses were unsuccessful. In this issue, Sui and colleagues used a nonhuman primate model to investigate the effect of various vaccine adjuvants on the efficacy of SIV immuni...
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Streamlined and efficient data maintenance processes are crucial to maintaining a GIS. Re-engineering of existing business processes in advance of data conversion is at the heart of ensuring that data is effectively maintained during and after conversion. Charlotte-Mecklenburg Utilities, (Utilities) has initiated a GIS Foundation project to convert its water and sewer system data into a GIS. Th...
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Usually, an early task in any data warehousing project is a detailed examination of the source systems, including an audit of data quality. Data quality issues could include inconsistent data representation, missing data and difficulty around understanding relationships between the various source systems. As ETL and Data Quality technologies converge, it’s important to use the right tools at th...
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In the analysis phase of the information system development (ISD), the users' requirements are studied and defined. In most ISD methodologies, the requirements are defined by two models: a conceptual data model in form of e.g. an entity-relationship (ER) diagram or a class diagram; and a functional model in form of e.g. data flow diagrams (DFD) or use cases. Different ISD methodologies prescrib...
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ژورنال
عنوان ژورنال: ETS Research Report Series
سال: 1987
ISSN: 2330-8516
DOI: 10.1002/j.2330-8516.1987.tb00212.x