Memory-free

Caffeine improves performance on tests of semantic memory, free recall, and recognition memory (Smith et al. 1994 Warburton 1995). However, the effects are both dose and task dependent. In some studies, higher doses produced greater improvement, while in others subjects receiving caffeine performed slightly worse than placebo (Loke 1988 ... 

Deborah E. Lipstadt, Denying the Holocaust The Growing Assault on Truth and Memory, Free Press, New York 1993... 

Key Words A -tetrahydrocannabinol acute effects associative processes chronic effects constrained associations episodic memory free associations free recall human learning marijuana memory paired-associate learning reaction time recall retrieval semantic memory THC. 

The stochastic version of a memory-free deterministic process is a Markov process — more precisely, a first-order Markov process. It is interesting to remark that in the theory of stochastic processes the concept of history-dependent processes, had been adopted by the time the theory was established (i.e. in the mid-thirties). 

Memory-free mapping means that the present output value in time depends only on the present input value in time and not on the past history of the input signal. Thus memory-free mappings axe function mappings. 

A scalar operator which considers simultaneously complex hysteresis effects, log(t)-type creep effects as well as saturation effects can be constructed by the parallel connection of a Prandtl-Ishlinskii hysteresis operator H and a Prandtl-Ishlinskii log(t)-type creep operator K followed by a concatenation with a memory-free scalar nonlinearity S. In this case the mapping T in (6.75) and (6.76) is given by a so-called modified Prandtl-Ishlinskii creep extension Mk. The corresponding reconstruction model is then given by (6.77) and (6.78) with the compensator Tg... 

There are problems in use of the frit nebulizer. Memory effects tend to be severe, and each sample needs to be followed by several wash-outs with clean solvent before the pores of the frit become free of residual sample. Biological samples frequently contain detergent-like materials, and... 

There is no competitive situation for data storage disks with embossed iaformation (CD-ROM) and recordable/nonerasable disks (WORM) no counterpart to CD-ROM and WORM exists among magnetic memories. EOD drives are best compared to floppies and removable hard disk media given their possibiUty of easy and problem-free disk exchange and a capacity on the order of that of removable magnetic media (Tape, Bernoulli, SyQuest). 

Systems sueh as the EDS use a dual mieroproeessor system. As ean be seen in Figure 4-93, eritieal parameters of memory, input/output, alarm/trips, and host eomputer eommunieation are handled in the main proeessor. To maintain fast response time, this proeessor is kept free of less eritieal tasks sueh as operator interfaeing, trending, and arehiv-ing. A seeond proeessor, an administrative CPU, is used for these less eritieal yet important tasks. 

The first element, dynamic dilution, provides a reproducible sample for each panelist. The system must minimize the loss of the odorant to the walls of the delivery apparatus, provide clean dilution air of odor-free quality, maintain a constant dilution ratio for the duration of a given test, and have no memory effect when going from high to low concentrations or switching between odorants of different character. The type of mask or port and the delivery flow rate have been found to influence the response of panelists in determining odor threshold and intensity. 

Static defects scatter elastically the charge carriers. Electrons do not loose memory of the phase contained in their wave function and thus propagate through the sample in a coherent way. By contrast, electron-phonon or electron-electron collisions are inelastic and generally destroy the phase coherence. The resulting inelastic mean free path, Li , which is the distance that an electron travels between two inelastic collisions, is generally equal to the phase coherence length, the distance that an electron travels before its initial phase is destroyed ... 

The reactivation of enzymes (after their partial inactivation in an acid medium) upon passing into a medium of pH 8 is also of great importance for oral use (Fig. 25). Enzymes immobilized in crosslinked polyelectrolytes are characterized by a structural memory even after considerable inactivation. Under changed conditions, this leads to a considerable or almost complete reactivation of the enzyme, whereas in the reactivation of a free enzyme in solution under similar conditions the enzymatic activity is restored on a lower level. 

This version of ISIM requires the following a hard disk, with 0.25 Mbyte of free space approximately 350 Kbyte memory and a graphics adaptor of the types CGA, EGA or VGA. 

Why does the amount of acid in paper make such a difference Acids are corrosive chemicals. Corrosive chemicals can destroy material or living tissue on contact. Paper does not contain enough acid to burn skin, but over time the paper becomes stiff and brittle and eventually falls apart. As a result, precious personal memories or important historical documents that were written on acidic paper can be lost. Acid-containing paper can also transfer the acid to other objects in a process called acid migration. The acid can weaken or destroy the fibers in fabrics. It can also ruin photographs. Therefore, to preserve those irreplaceable memories, be sure to use paper that is acid-free. 

Figure 1.2 People wishing to preserve old memories on paper, such as in a scrapbook, should use acid-free paper. This is because acid can make paper brittle and fall apart over a long period of time. It can also seep into and destroy fibers in fabrics, or ruin photographs.

Table 6.1. Memory and learning tasks where drug-free recreational Ecstasy users have displayed significant performance deficits.

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