Search results for "MEMORY"

Too many passwords? : How understanding our memory can increase password memorability

2018

Passwords are the most common authentication mechanism, that are only increasing with time. Previous research suggests that users cannot remember multiple passwords. Therefore, users adopt insecure password practices, such as password reuse in response to their perceived memory limitations. The critical question not currently examined is whether users’ memory capabilities for password recall are actually related to having a poor memory. This issue is imperative: if insecure password practices result from having a poor memory, then future password research and practice should focus on increasing the memorability of passwords. If, on the other hand, the problem is not solely related to memory…

Frequently Using Passwords Increases Their Memorability - A False Assumption or Reality?

2017

Password memorability is a significant problem that is getting worse as the numbers grow. As a direct result of memory limitations, adopted insecure password practices have substantial consequences as organizations lose millions to security breaches and helpdesk costs. IS research has examined memory theories to increase the memorability of passwords. However, in our research we have discovered some anomalous findings. It is commonly known that more frequently and recently recalled information is more easily remembered (assumed for password recall also); our previously collected objective data revealed no effect on password recall. This study will strive to confirm whether or not password m…

Pheromone-induced odour learning in newborn rabbits: action, development and adaptive function

2012

Communication orale; International audience

The advantage of errorless learning for the acquisition of new concepts' labels in alcoholics

2009

BackgroundPrevious findings revealed that the acquisition of new semantic concepts' labels was impaired in uncomplicated alcoholic patients. The use of errorless learning may therefore allow them to improve learning performance. However, the flexibility of the new knowledge and the memory processes involved in errorless learning remain unclear.MethodNew concepts' labels acquisition was examined in 15 alcoholic patients and 15 control participants in an errorless learning condition compared with 19 alcoholic patients and 19 control subjects in a trial-and-error learning condition. The flexibility of the new information was evaluated using different photographs from those used in the learning…

Temperature-induced martensite in magnetic shape memory Fe2MnGa observed by photoemission electron microscopy

2012

The magnetic domain structure in single crystals of a Heusler shape memory compound near the composition Fe2MnGa was observed during phase transition by photoelectron emission microscopy at Beamline 11.0.1.1 of the Advanced Light Source. The behavior is comparable with recent observations of an adaptive martensite phase in prototype Ni2MnGa, although the pinning in the recent work is an epitaxial interface and in this work the effective pinning plane is a boundary between martensitic variants that transform in a self-accommodating way from the single crystal austenite phase present at high temperatures. Temperature dependent observations of the twinning structure give information as to the …

Parallelization strategies for density matrix renormalization group algorithms on shared-memory systems

2003

Shared-memory parallelization (SMP) strategies for density matrix renormalization group (DMRG) algorithms enable the treatment of complex systems in solid state physics. We present two different approaches by which parallelization of the standard DMRG algorithm can be accomplished in an efficient way. The methods are illustrated with DMRG calculations of the two-dimensional Hubbard model and the one-dimensional Holstein-Hubbard model on contemporary SMP architectures. The parallelized code shows good scalability up to at least eight processors and allows us to solve problems which exceed the capability of sequential DMRG calculations.

Conditioned orienting (alpha) and delayed behavioral and evoked neural responses during classical conditioning

1989

A differentiation of short-latency (alpha) and long-latency (delayed) classically conditioned behavioral and evoked neural (hippocampal) responses was attempted. Further, facilitation and retardation of these responses were studied in an experimental design in which 10 paired conditioning sessions either preceded (CC-CO group) or followed (CO-CC group) 10 randomly unpaired presentations of conditioned stimuli (CS) and unconditioned stimuli (UCS). A 2024-ms tone (1000 Hz) was delivered directly through a miniature earphone to the left ear, eliciting an orienting head movement ('alpha' response) to the left. The unconditioned stimulus (UCS) was a direct 1024-ms stimulation of the lateral hypo…

Association between DRD2/DRD4 interaction and conduct disorder: a potential developmental pathway to alcohol dependence

2013

1 Department of Genetics, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil 2 King’s College London, Institute of Psychiatry, MRC Social Genetic and Developmental Psychiatry Centre, London, United Kingdom, UK 3 Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany 4 Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands 5 Psychology Department, National University of Singapore, Singapore, Singapore 6 Department of Psychiatry, Donders Institute for Brain, Cognition an…

The self-organizing consciousness

2003

We propose that the isomorphism generally observed between the representations composing our momentary phenomenal experience and the structure of the world is the end-product of a progressive organization that emerges thanks to elementary associative processes that take our conscious representations themselves as the stuff on which they operate, a thesis that we summarize in the concept of Self-Organizing Consciousness (SOC).

2016

Current research demonstrates increased learning rates in differencial learning (DL) compared to repetitive training. To date, little is known on the underlying neurophysiological processes in DL that contribute to superior performance over repetitive practice. In the present study, we measured electroencephalographic (EEG) brain activation patterns after DL and repetitive badminton serve training. Twenty-four semi-professional badminton players performed badminton serves in a DL and repetitive training schedule in a within-subjects design. EEG activity was recorded from nineteen electrodes according to the 10-20 system before and immediately after each 20-minute exercise. Increased theta a…