Frustration index

ZnCr204 shows typical signs of GFM behavior with c = -330 K but no sign of magnetic order until Tn = 12.5 K, a frustration index The magnetic phase transition is... 

A commonly used criterion is the so-called frustration index, which is simply the ratio of the modulus of the Weiss temperature to the ordering temperature, d/To, where ordering can be of the usual long-range type or a... 

It shows a huge frustration index of 150 with a spin freezing Tf = 3.4 K for a sample with 90% coverage of the pyrochlore slabs by Cr +. Several anomalous properties appear in the specific heat that are still not understood in detail but point to the possible involvement of spin singlets in the ground state... 

While these are iso-structural and iso-spin materials, their properties are remarkably different as indicated in Table 2.3. Li4MgRe06 shows a spin frozen ground state below Tf 12 K with no long range order and a large frustration index, 14, while U5OSO6 orders AF below 40K with essentially no evidence for frustration, / 1. 

Hydroxymethyl-LSD, 1-dimethylaminomethyl-LSD and 2-iodo-LSD. These three additional compounds are shown here because they were described in a synthetic flurry that followed the discovery the activity of LSD. But at the moment I know neither their internal Sandoz codes nor if they had ever been explored in man. This is a kind of frustrating catch-all entry, in that the long index will send you here, and once here you realize that nothing is known. Well, at least the compounds are known, and perhaps there is something in the Sandoz vaults that might be interesting. I do not have access to them. 

Our first attempts at a straight-forward analysis of these two compounds was frustrated by the broad, structureless and highly overlapping spectra. However, it was known from previous studies that the parent s fluorescence is quenched under acid conditions whereas that of the metabolite is relatively unaffected. This fact suggested that a higher order strategy could be devised an EEM would be obtained under two pH conditions, acid and base. In this case, the data would be an array T indexed by three subscripts ... 

In all fairness, in a survey of machine methods which are in operation, those abandoned because of dissatisfaction should be included. Ashthorpe (2) describes difficulties encountered at the Atomic Energy Research Establishment in Harwell. After two years in operation and the accumulation of 6500 Hollerith-type cards, the installation was abandoned and a multiple file of visually located index cards was established. The punched-card installation was completely dependent upon a single file of punched cards arranged in random order. It was impossible to ascertain how a document previously coded had been indexed without resorting to the punched card file. In almost all operations now used, supplementary hand files permit the rapid location of certain specific information. Ashthorpe gives an excellent description of the difficulties and frustration which may come from too complete dependence on a single punched-card file. It is a very instructive article for those embarking into the mechanical field. 

Sliding between concentric multiwalled carbon nanotubes presents a simple geometry, which restricts interlayer motion to a single (axial) direction with a fixed interlayer orientation of stiff, smooth layers. Each layer in a concentric multiwalled carbon nanotube is indexed by two integers (n, m) that give the circumference in graphitic lattice coordinates. The difference in radii between successive layers frustrates the circumferential interlayer registry. The axial... 

The form of the Fresnel equations is deceptively simple. They encapsulate the different reflectivity in the p and s planes referred to, but also describe such phenomena as internal reflection, where the refractive index of the incident medium is higher than that of the substrate, and total and frustrated total internal reflection. 

The Figure 4 shows some results of the research of the comparative data from Portugal and Brazil with 54 operators. There is the data of the six variables of NASA-TLX subjective assessment tools MD (mental demand), RP (Requirement Physics), TR (Temporal Requirement), LA (Level of Achievement), LE (Level of Effort) and LF (Level of Frustration). The scale corresponds to the first minimum value 1 and the maximum index 20. 

The values of h for the P, D and G structures are close to the ideal homogeneous (and frustration-free) value of exactly 3/4 (see Table 16.1 below). The lattice parameter (o ) scales with the crystallographic genus (y) and the homogeneity index h) as follows ... 

Figure 16.21). In this case, the spatial frustration is For Type 2 bicontinuous mesophases, the chain length reflected in the homogeneity index h) for the particular is equal to the inner thickness, given by mesophase. The equations have been derived in detail elsewhere (11). For Type 1 bicontinuous mesophases, the chain length is equal to the inner thickness, as follows (16.24)...

The area most commonly determined is that of "frustrated optical reflexion". Total reflexion occurs (in a range of incidence angles) when light reaches a body of a low refractive index from a body of a high index, for instance, when a light beam passes a polymer and is refracted... 

Figure 15. Heat capacity of 80PCB0B near the nematic to smectic A1 phase transition. The smooth curve represents a fit to the data with Eq. (6) based on critical parameters in agreement with the three-dimensional XY model. The index 1 in SmA refers to the monolayer structure of this frustrated smectic compound [65].

Determining Mental Load. To obtain a model, we first needed to determine which measures would most likely correlate with user interruptability. As a first candidate, we examined measures of user mental load during a task. In the past, the most common measure of mental load has been NASA s Task Load Index (TLX) [11], a subjective self-assessment of various mental and physical aspects of a task. Results take the form of a multi-dimensional rating, based on the weighted average of six subscales mental demand, physical demand, temporal demand, performance, effort, and frustration. 

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