نتایج جستجو برای: amount of transactions
تعداد نتایج: 21165898 فیلتر نتایج به سال:
objective: the objective of this study was to investigate the invitro fluoride release of four new self-adhesive resin cements; set (sdi, australia), breeze (pentron, usa), embrace wetbond (pulpdent, usa), g-cem (gc, japan) and to assess the bonding performance of these self-adhesive resin cements for bonding of orthodontic brackets. materials and methods: for fluoride release experiment, six ...
A mechanism to reduce the amount of lost work-done using Nested Transactions (NT) and Autonomous Agents is introduced in this paper. NT provides a greater failure-tolerance model than the Distributed Transactions because a NT can be divided into alternative sub-transactions, such that each can commit independently. On the other hand, Autonomous Agents are able to process subtransactions while m...
run-out-table (rot) is located between last finishing stand and down coiler in a hot strip mill. as the hot steel strip passes from rot, water jets impact on it from top and bottom and strip temperature decreases approximately from 800-950 °c to 500-750°c. the temperature history that strip experience while passing through rot affects significantly the metallurgical and mechanical properties, s...
having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...
Commercial and economic transactions are considered as the driving force and engine of development in any society. Such transactions may act as the factors of dynamism and prosperity of border areas while playing an essential role in improving life standards of people, poverty reduction, appropriate and equitable distribution of incomes and population size, as well as expediting better cooperat...
In concurrent database systems, correctness of update transactions refers to the equivalent effects of the execution schedule and some serial schedule over the same set of transactions. Integrity constraints add further semantic requirements to the correctness of the database states reached upon the execution of update transactions. Several methods for efficient integrity checking and enforcing...
today, e-commerce has considerable portion in commercial businesses, and it has been developing. one of the most important steps in e-commerce is e-payment that has been done through different tools such as e-banking, and e-cheques. in this type of electronic transactions, there are always different worries both for payers and payees due to untruthfulness. for example, amount modifying, date mo...
Distributed transaction processing has benefited greatly from optimistic concurrency control protocols thus avoiding costly fine-grained synchronization. However, the performance of these protocols degrades significantly when the workload increases, namely, by leading to a substantial amount of aborted transactions due to concurrency conflicts. Our approach stems from the observation that when ...
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
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...
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