A Software Transactional Memory is a concurrency control mechanism that executes multiple concurrent, optimistic, lockfree, atomic transactions, thus alleviating many problems associated with conventional mutual exclusion primitives such as monitors and locks. With the advent of massive multi-cores, more transactions can be initiated concurrently, however resulting in an increase in the percent...

Asset booms and busts have accompanied or caused recent macroeconomic fluctuations. However, asset prices are not a part of GDP nor they included in inflation calculations. Links between the financial sector real economy increasingly important. This paper borrows an approach from natural sciences to explain optimal amount transactions for unbacked assets. Excessive such assets impede long run g...

Two phase commit PC is used for coordinating the commitment of transactions in distributed systems The preferred PC optimization is the presumed abort variant which reduces the number of messages when transac tions are aborted and eliminates the coordinator s need to retain information about aborted transactions The presumed commit PC variant provides a larger message reduction but its coordina...

Cloud computing has become a new platform for personal computing. However, while designing the strategy of data placement, there still lacks the consideration of systematic diversity of distributed transaction costs. This paper proposes the use of genetic algorithms to address the data placement problem in cloud computing. This strategy has adequately considered the correlation between data sli...

With the increasing use of electronic media for our daily transactions, we widely distribute our personal information. Once released, controlling the dispersal of these information is virtually impossible. Privacy-enhancing technologies can help to minimize the amount of information that needs to be revealed in transactions, on the one hand, and to limit the dispersal, on the other hand. Unfort...

We design and implement a linear hash algorithm in nested transaction environment to handle large amount of data with increased concurrency. Nested transactions allow parallel execution of transactions, and handle transaction aborts, thus provides more concurrency and efficient recovery. We use object-oriented methodology in the implementation which helped in designing the programming component...

This study examined how motivation for learning English, the amount of contact with English, and  length  of  residence  in  the  target language area affects Korean graduate students’ English pragmatic skills. The study attempted to account for differential pragmatic development among 50  graduate-level  Korean  students  in  relation  to  individual  factors  mentioned  above.  The  data were...

We study a problem involving a set of organizations. Each organization has its own pool of clients who either supply or demand one unit of an indivisible product. Knowing the profit induced by each buyer/seller pair, an organization’s task is to conduct such transactions within its database of clients in order to maximize the amount of the transactions. Inter-organizations transactions are allo...

We study a problem involving a set of organizations. Each organization has its own pool of clients who either supply or demand one unit of an indivisible product. Knowing the profit induced by each buyer/seller pair, an organization’s task is to conduct such transactions within its database of clients in order to maximize the amount of the transactions. Inter-organizations transactions are allo...

Information goods such as books, journals, computer software, music and videos can be copied, shared, resold, or rented. When such opportunities for sharing are present, the content producer will generally sell a smaller amount at a higher price which may increase or decrease pro¢ts. I identify three circumstances where pro¢ts increase: (1) when the transactions cost of sharing is less than the...