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Chapter 7 . DDF Domain
The dynamic dataflow (DDF) domain in Ptolemy is a superset of the synchronous dataflow (SDF) and Boolean dataflow (BDF) domains. In the SDF domain, a star consumes and produces a fixed number of particles per invocation (or “firing”). This static information (the number of particles produced or consumed for each star) makes possible compile-time scheduling. In the BDF domain, some actors with d...
متن کاملDark Crater-related Deposits on Venus in Radar Cross-section – Emissivity Domain
Introduction: The population of Venus impact craters is rather small (about 1000). About 10% of all craters have distinctive associated dark diffuse features (DDF) like parabolas or halos. Such craters are thought to be the youngest on the planet [1,2]. The DDF are interpreted as surface deposits of loose material (dust) formed by the impact. DDF change their form with geological time and disap...
متن کاملDemonstration of a Domain-Specific Language Debugging Framework
This demonstration presents a debugging framework that targets domain-specific languages (DSLs). The DSL Debugging Framework (DDF) generates debuggers automatically from DSL grammar specifications. The debugging concern is weaved into a base grammar in an aspect-oriented style. DDF was used to generate debuggers for three different types of DSLs (imperative, declarative, and hybrid) that are tr...
متن کاملHighly efficient square wave distant dipolar field and its application for in vivo MRI.
Intermolecular multiple quantum coherences generated by distant dipolar field (DDF) have some attractive properties, but the intrinsic weak signal intensity prevents their widespread applications. Recently, Branca et al. (J Chem Phys 2008;129:054502) suggested that square wave DDF was more efficient than conventional sinusoidal DDF because it could simultaneously produce intermolecular multiple...
متن کاملInterstudy heterogeneity of definitions of diastolic dysfunction severely affects reported prevalence
AIMS The aim of this article is to examine how the European Association of Cardiovascular Imaging (EACVI) and the American Society of Echocardiography (ASE) recommendations on the classification of diastolic dysfunction (DDF) are interpreted in the scientific community and to explore how variations in the DDF definition affect the reported prevalence. METHODS AND RESULTS A systematic review o...
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تاریخ انتشار 2007