Verbal memory deficits commonly observed among patients with schizophrenia include the tendency to commit intrusion errors (i.e., the incorrect recall of task-irrelevant material). Intrusion errors have been linked to deficits in self-monitoring, increased positive and disorganized symptoms, and poor executive functioning in these individuals, but such associations are inconsistent across studi...

Involuntary retrieval of unwanted memories is a common symptom in several clinical disorders, including post-traumatic stress disorder. With an aim to track the temporal dynamics of such memory intrusions, we recorded electrophysiological measures of brain activity while participants engaged in a Think/No-Think task. We presented the left hand word (the cue) of previously encoded word pairs in ...

We introduce a new method for detecting intrusions based on the temporal behavior of applications. It builds on an existing method of application intrusion detection developed at the University of New Mexico that uses a system call sequence as a signature. Intrusions are detected by comparing the signature of the intrusion and that of the normal application. But when the system call sequences g...

How to evaluate network security threat quantitatively is one of key issues in the field of network security, which is vital for administrators to make decision on the security of computer networks. A novel model of security threat evaluation with a series of quantitative indices is proposed on the analysis of prevalent network intrusions. This model is based on multiple behavior information fu...

The security policy of an information system may include a wide range of different requirements. The literature has primarily focused on access and information flow control requirements and more recently on authentication and usage control requirements. Specifying administration and delegation policies is also an important issue, especially in the context of pervasive distributed systems. In th...

Current stratospheric chemical model simulations underestimate substantially the large ozone loss rates that are derived for the Arctic from ozone sondes for January of some years. Until now, no explanation for this discrepancy has been found. Here, we examine the influence of intrusions of mid-latitude air into the polar vortex on these ozone loss estimates. This study focuses on the winter 19...

INTRODUCTION Unwanted mental intrusions (UMI) constitute the normal variants of obsessions in Obsessive-Compulsive Disorder (OCD), preoccupations about defects in Body Dysmorphic Disorder (BDD), images about illness in Hypochondriasis (HYP), and thoughts about eating in Eating Disorders (EDs). We sought to investigate the relationships between frequency and discomfort associated with the experi...

Intrusive memories are highly vivid, emotional and involuntary recollections which cause significant distress across psychological disorders including posttraumatic disorder (PTSD). Recent evidence has potentially extended our understanding of the development of intrusive memories by identifying biological factors which significantly impact on memories for emotionally arousing stimuli. This stu...

A hydraulic fluid impedance plot is produced by plotting instantaneous differential pressure against phasic blood flow across a vascular segment. This simple plot quantitatively and compactly describes the changes in flow resistance (impedance) throughout the entire cardiac cycle. Impedance plots were obtained before and after corrective surgery in patients with a variety of left ventricular ou...

BACKGROUND Relationship-related obsessive-compulsive phenomena (ROCD) are encountered frequently in the clinic, and involve severe consequences to personal and relational well-being. One common presentation of ROCD involves disabling preoccupation and doubts focusing on intimate partner's flaws (partner-focused obsessions). It was previously suggested that individuals perceiving their partner's...