Database architectures typically process queries one-at-a-time, executing concurrent queries in independent execution contexts. Often, such a design leads to unpredictable performance and poor scalability. One approach to circumvent the problem is to take advantage of sharing opportunities across concurrently running queries. In this paper we propose Many-Query Join (MQJoin), a novel method for...

Many applications, such as telecommunication, process control, and virtual reality, require real-time access to database. Main-memory DBMS, which becomes feasible with the increasing availability of large and relatively cheap memory, can provide better performance than disk-based systems for real-time applications. This paper presents an overall architecture of M 2 RT, a Main-Memory Real-Time D...

Objective(s): Behavioral and neuroimaging studies have shown that transcranial direct current stimulation, as a non-invasive neuromodulatory technique, beyond regional effects can modify functionally interconnected remote cortical and subcortical areas. In this study, we hypothesized that the induced changes in cortical excitability following the application of cathodal or anodal tDCS over the ...

memory formation is the most important aspect of a vaccine which can guarantee long-lasting immunity and protection. the main aim of the present study was to evaluate the memory immune responses after immunization with a mini vaccine. mice were immunized with human immunodeficiency virus-1 p24-nef fusion peptide and then cellular and humoral immune responses were evaluated. in order to determin...

Memory formation is the most important aspect of a vaccine which can guarantee long-lasting immunity and protection. The main aim of the present study was to evaluate the memory immune responses after immunization with a mini vaccine. Mice were immunized with human immunodeficiency virus-1 P24-Nef fusion peptide and then cellular and humoral immune responses were evaluated. In order to determin...

introduction: previous studies have demonstrated that the &beta-adrenergic; receptor antagonist propranolol impairs fear memory reconsolidation in experimental animals. there are experimental parameters such as the age and the strength of memory that can interact with pharmacological manipulations of memory reconsolidation. in this study, we investigated the ability of the age and the strength ...

Abstract Background and Objective: Alzheimer’s disease (AD) is a weakening neurodegenerative disorder typified by increased b-amyloid (Ab) deposition and neuronal dysfunction causing to impaired learning and memory. Among proposed risk factors, induced oxidative stress is a main cause for incidence of the disease. The aim of this study was to determine the effects of the rosmarinic acid on lear...

Pipeline breaking operators such as aggregations or joins require database systems to materialize intermediate results. In case that the database system exceeds main memory capacities due to large intermediate results, main-memory database systems experience a massive performance degradation due to paging or even abort queries. In our current research on efficiently analyzing DNA sequencing dat...

Despite falling prices for main memory and increasing sizes, main memory is still a scarce resource in database systems. Optimizing main memory utilization is a major objective for main memory databases as more free memory can be used to improve performance or to store larger systems in the database. Several publications proposed separating frequently and less frequently accessed data (i.e., ho...