We present mathematical models that describe individual neural networks of the Central Nervous System. Three cases are examined, varying in each case the values of the refractory period and the synaptic delay of a neuron. In the case where both the refractory period and the synaptic delay are bigger than one, we split the population of neurons into sub-groups with their own distinct synaptic de...

Two expected utility models are considered for a multi-period portfolio selection task of a special nature: the generalized logarithmic and negative exponential models. A weak version of the models is formulated in which the single parameter of each of the models is allowed to vary freely from one period to another in order to account for observed individual differences between subjects as well...

followingthedeathofsaadzaghloul,oneofthenationalist leaders of egyptin1927,hispartysupportersprintedmanynotesabouthim.one of themostimportantoftheseworkswasthebooksaadzaghloulwrittenby mahmoudabbasaqqādin1936.in1939and1941,abdal-rahmanal-rafi publishedtwodetailedbiographyaboutmustafakameland mohammad farid, the other nationalist leaders of egypt. showing an ideal image of egypt's national ...

We construct quasiconformal mappings in Euclidean spaces by integration of a discontinuous kernel against doubling measures with suitable decay. The differentials of mappings that arise in this way satisfy an isotropic form of the doubling condition. We prove that this isotropic doubling condition is satisfied by the distance functions of certain fractal sets. Finally, we construct an isotropic...

the first border treaties of iran, the documents of which are available, were signed in safavid period between iran and ottoman empire. treaties were initially in the form of royal letters which were exchanged between heads of countries. they involved acceptance of peace instead of war. later on, officially sealed documents called sonurname were exchanged together with them. these documents con...

The authors present the central capacity sharing (CCS) model and derive equations describing its behaviors to explain results from dual-task situations. The predictions of the CCS model are contrasted with those of the central bottleneck model. The CCS model predicts all of the hallmark effects of the psychological refractory period (PRP) pardigm: -1 slope of the PRP effect at short stimulus on...

Stimuli that are clearly positive or negative (hence valence-laden stimuli) have the potential to interrupt unrelated task processing. A typical example is the emotional Stroop effect (ESE) in which responding to a certain task feature (e.g., color) is delayed by the presentation of task-irrelevant valent stimuli (e.g., negative pictures) compared to valence-neutral stimuli. Here we scrutinize ...