ELF propagation update
نویسندگان
چکیده
منابع مشابه
Modeling ELF radio atmospheric propagation and extracting lightning currents from ELF observations
Observations of extremely low frequency (ELF) radio atmospherics (sferics), the transient electromagnetic fields radiated by lightning discharges, are used to determine the current moment waveforms of vertical lightning discharges. In order to extract this information the propagation of radio atmospherics from source to receiver must be modeled accurately, especially in view of the important ro...
متن کاملInterest-Based RDF Update Propagation
Many LOD datasets, such as DBpedia and LinkedGeoData, are voluminous and process large amounts of requests from diverse applications. Many data products and services rely on full or partial local LOD replications to ensure faster querying and processing. While such replicas enhance the flexibility of information sharing and integration infrastructures, they also introduce data duplication with ...
متن کاملUpdate Propagation in a Formal Semantic Model
The update propagation methodology of a semantic database model, IFO, is described. An informal review of IFO, a mathematically defined model which subsumes the structural components of most prominent semantic models in the literature, is also presented.
متن کاملCompositionality of Update Propagation: Lax PutPut
Compatibility of update propagation with update composition (the infamous Putput law) is fundamental for the mathematical modelling of bx, but is not easy to ensure in practical scenarios. This severely restricts practical applicability of elegant algebraic models based on Putput, while leaving practical bx without solid algebraic support is also unsatisfactory. The paper aims to mitigate these...
متن کاملScalable Update Propagation in Epidemic Replicated Databases
Many distributed databases use an epidemic approach to manage replicated data. In this approach, user operations are executed on a single replica. Asynchronously, a separate activity performs periodic pair-wise comparison of data item copies to detect and bring up to date obsolete copies. The overhead due to comparison of data copies grows linearly with the number of data items in the database,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Journal of Oceanic Engineering
سال: 1984
ISSN: 0364-9059
DOI: 10.1109/joe.1984.1145609