Tree structures are largely used to index and search sequences on secondary memory. In some situations, many range queries are processed almost simultaneously and the resulting number of disk accesses can be high. In order to reduce the number of disk accesses, similar sequences can be grouped and spanned as a single query. A simple strategy is to unify all sequences into a single group. Howeve...

Certain groups within society, such as the poor, elderly, and those renting their homes, are at risk of bearing disproportionate costs from transition to a low-carbon economy. These particularly energy- climate-related injustices linked ability purchase sufficient energy (low-carbon or otherwise) adequately heat cool homes. The Solar Saver programme in Melbourne, Australia, was an early attempt...

The advent of smartphones in recent years has changed the wireless landscape. Smartphones have become a platform for online user interface to cloud databases. Cloud databases may provide a large set of userprivate and sensitive data (i.e., objects), while smartphone users (i.e., subjects) provide location-sensitive information. Secure and private services in wireless accessing to cloud database...

The measurement of RTS amounts measures a relationship between inputs and outputs in a production structure. There are many different ways to calculate RTS in primal or dual space. But in more realistic cases, governments usually intervene on DMU’s behavior as regulatory agency, this clearly represent a set of limitations and restrictions on behaviors of DMUs, So very few decisions in DMUs are ...

Recent studies have shown that cacheconscious indexes outperform conventional main memory indexes. Cache-conscious indexes focus on better utilization of each cache line for improving search performance of a single lookup. None has exploited cache spatial and temporal locality between consecutive lookups. We show that conventional indexes, even “cache-conscious” ones, suffer from significant ca...