Simulation plays an important role in grid research. However, there is no general simulation environment for scheduling algorithms testing. In this paper we establish an extendable grid simulation environment based on GridSim by choosing and extending the appropriate modules of an open-source grid simulation environment—-gridbroker. In our simulation environment, users can easily add various di...

User interest inference from social networks is a fundamental problem to many applications. It usually exhibits dual-heterogeneities: a user’s interests are complementarily and comprehensively reflected by multiple social networks; interests are inter-correlated in a nonuniform way rather than independent to each other. Although great success has been achieved by previous approaches, few of the...

The posterior medial parietal cortex and left prefrontal cortex (PFC) have both been implicated in the recollection of past episodes. In a previous study, we found the posterior precuneus and left lateral inferior frontal cortex to be activated during episodic source memory retrieval. This study further examines the role of posterior precuneal and left prefrontal activation during episodic sour...

Judgments about stimulus characteristics are affected by enhanced processing fluency that results from an earlier presentation of the stimulus. By monitoring for an episodic source of processing fluency, younger adults can more easily avoid this influence than can older adults. In Experiment 1, older adults discounted the effects of fluency when task demands encouraged the use of analytic judgm...

Research is mixed as to whether self-generation improves memory for the source of information. We propose the hypothesis that positive generation effects (better source memory for self-generated information) occur in reality-monitoring paradigms, while negative generation effects (better source memory for externally presented information) tend to occur in external source-monitoring paradigms. T...

The present study investigated children’s abilities as earwitnesses, and examined the influence of age, individual differences, and the emotionality of the auditive stimuli on memory for environmental sound events. Sixty children participated in the study. Twenty-five children aged 7-8 years and 35 children aged 9-11 years were presented two environmental sound events: a car crashing and someon...