A real-time data base system (RTDBS) is designed to provide timely response to the transactions of dataintensive applications. Processing a transaction in a distributed RTDBS environment presents the design choice of how to orovide access to remote data refer_.._.__. .._.. __ I-.----_-_--_ __ ._. .___ ____ ._ _. enced by the transaction. Satisfaction of the timing constraints of transactions sh...

| We investigate the performance implications of providing transaction atomicity for rm-deadline real-time applications operating on distributed data. Using a detailed simulation model, the real-time performance of a representative set of classical transaction commit protocols is evaluated. The experimental results show that data distribution has a signiicant innuence on real-time performance a...

The transport protocol for SIP can be chosen based on the requirements of services and network conditions. How does the choice of TCP affect the scalability and performance compared to UDP? We experimentally analyze the impact of using TCP as a transport protocol for a SIP server. We first investigate scalability of a TCP echo server, then compare performance of a SIP registrar server for two T...

This work deals with the problem of combining reactive features, such as the ability to respond to events and define complex events, with the execution of transactions over general Knowledge Bases (KBs). With this as goal, we build on Transaction Logic (T R), a logic precisely designed to model and execute transactions in KBs defined by arbitrary logic theories. In it, transactions are written ...

Among the questions that ecosystem-based management raises for economists is how to partition uses of the many biological, chemical and physical attributes of marine ecosystems into sets of property rights that undergird total ocean wealth. An elemental basis of property rights for fisheries involves the interplay between ecological and technological interactions, including sideeffects (externa...

Cache prefetching technology has become the mainstream data access optimization strategy in Industrial Intelligent Systems (IIS) and centers. However, rapidly increasing of unstructured generates massive pairwise relationships. Therefore, researchers have to make a choice between spatial locality temporal ensure an acceptable computational complexity. We propose cache-transaction-based grouping...

structure of the problem at hand. In 1991, Ronald H. Coase received the Nobel prize for his work on the role of transaction costs in economics. His paper on “The Nature of the Firm” (Coase 1937) introduced transaction costs as the primary reason for the existence of firms. Coase pointed out that firms substitute an internal management structure for market transactions to eliminate the costs of ...

as the e-commerce sites are being more secure and reliable in recent years and the number of transactions is rising rapidly, parallelism can help us to reduce response time and increase throughput for e-commerce transactions. this paper will investigate parallelism in on-line transaction processing. it aims to specify those aspects of e-commerce transactions that would profit from parallel proc...

Service provision by local governments can be delivered using in-house bureaucracies, private firms, and partnerships with other governments or the not-forprofit sector. This production decision has been a major focus of discussion among scholars, practitioners and political agents for the last quarter of a century. The transaction costs framework is an important tool to analyse decisions regar...

iqala (cancelling of the contract) is a legal act that is formed by sides' satisfactory contract and makes it breakup. imami, hanbali and shafei jurists revocate the iqala. hanafi jurists account iqala revocation into sides of contract, but a new transaction into outsiders. from the maleki jurists viewpoint, iqala is a new transaction, but civil code accounts the iqala tafasokh (breaking u...