Search results for "Data store"
showing 5 items of 15 documents
Efficient and Lightweight Data Integrity Check in In-Networking Storage Wireless Sensor Networks
2009
In In-networking storage Wireless Sensor Networks, sensed data are stored locally for a long term and retrieved on-demand instead of real-time. To maximize data survival, the sensed data are normally distributively stored at multiple nearby nodes. It arises a problem that how to check and grantee data integrity of distributed data storage in the context of resource constraints. In this paper, a technique called Two Granularity Linear Code (TGLC) that consists of Intra-codes and Inter-codes is presented. An efficient and lightweight data integrity check scheme based on TGLC is proposed. Data integrity can be checked by any one who holds short Inter-codes, and the checking credentials is shor…
Secure, dependable and publicly verifiable distributed data storage in unattended wireless sensor networks
2010
Published version of an article from the journal : Science in China, Series F: Information Sciences. The original publication is available at Spingerlink. http://dx.doi.org/10.1007/s11432-010-0096-7 In unattended wireless sensor networks (UWSNs), sensed data are stored locally or at designated nodes and further accessed by authorized collectors on demand. This paradigm is motivated by certain scenarios where historical or digest data (e.g., average temperature in a day), instead of real-time data, are of interest. The data are not instantly forwarded to a central sink upon sensing, thereby saving communication energy for transmission. Such a paradigm can also improve data survivability by m…
Library for model querying
2012
Query and transformation languages make it easy to work with models, but they are bound to one particular data store. That makes them hard to adopt in projects where data is stored in a different repository, which hinders more widespread use of transformations and models. Instead of adopting a transformation language to a new data store, we propose to build a query and transformation library for the general-purpose language that is already used in a project. In this paper we demonstrate that it can be easily by implementing such a library for an EMOF-like data store in the Lua language.
Hydrophobic and cation exchange mechanisms in the retention of basic compounds in a polymeric column.
2004
A cation exchange retention mechanism concomitant with the well-known hydrophobic partition mechanism in a polymeric column has been observed and investigated. This exchange process is attributed to ionization of some acidic sites present in the polymer column at basic mobile phase pH values. Several drugs of different basicity have been chromatographed on a polymeric PLRP-S column with methanol-water and acetonitrile-water mobile phases. The cation exchange between the protonated basic drug and the buffer cations (Na+, K+ and BuNH4+) is observed at the pH range where the protonated drug and the ionized sites of the column coexist. This process produces a shift of the retention versus pH pl…
The Mystery of Tombstone
2012
Italian Abstract: Nella chiesa annessa al complesso monastico basiliano, sito nel quartiere Immacolata di Barcellona Pozzo di Gotto (Messina), e custodita una lapide sepolcrale raffigurante un uomo adulto scolpito a bassorilievo, con una lunga spada posta davanti al corpo e un cane con la testa mozzata ai piedi. Fonti settecentesche tramandano che la lapide era un tempo collocata nella chiesa di Santa Maria di Gala e riportano, seguendo la tradizione locale, che essa raffigurava Simone il Normanno, figlio di Adelasia e Ruggero I, sepolto a Gala. In realta, nella lapide sepolcrale e raffigurata una persona adulta e non un giovane, com’era Simone, morto a dodici anni il 28 settembre del 1105.…