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Causality experiment

In the same section, we also see that the source of the appropriate analytic behavior of the wave function is outside its defining equation (the Schibdinger equation), and is in general the consequence of either some very basic consideration or of the way that experiments are conducted. The analytic behavior in question can be in the frequency or in the time domain and leads in either case to a Kramers-Kronig type of reciprocal relations. We propose that behind these relations there may be an equation of restriction, but while in the former case (where the variable is the frequency) the equation of resh iction expresses causality (no effect before cause), for the latter case (when the variable is the time), the restriction is in several instances the basic requirement of lower boundedness of energies in (no-relativistic) spectra [39,40]. In a previous work, it has been shown that analyticity plays further roles in these reciprocal relations, in that it ensures that time causality is not violated in the conjugate relations and that (ordinary) gauge invariance is observed [40]. [Pg.97]

While this above state of affairs is decidedly counterintuitive, it has the virtue of simply and easily - at least in principle - accounting for one of the deep mysteries of quantum mechanics namely, an apparent noidocality as expressed by the Einstein-Podolsky-Rosen gcdarikcn experiment [ein35] and Bell s theorem [bell64] (see discussion box). Finite nature implies that any system that is allowed to evolve from some distant initial state possesses causality in all space-time directions. This implies, in particular, that no part of space can be considered to be causally separated from another, and that therefore the DM universe will always harbor effects that cannot be attenuated by distance. [Pg.668]

Further below, I will refer to a Bayesian causal network approach that does attempt to infer causation from microarray data. Furthermore, as Lander suggests, the microarray data, suitably constrained, may be used to generate causal hypotheses that can then be tested in other experiments and contexts. Thus, there are strategies that may be able to address this difficulty of determining causation. [Pg.334]

Adverse event (or Adverse experience) Any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment. [Pg.772]

Water Reclamation Works by their very nature can, at times be the source of unpleasant odorous emission. The odour-intensive compounds (osmogenes) which make up these emissions are believed to arise mainly as the decomposition products of carbohydrates and proteins. The breakdown of this waste material proceeds by aerobic and anaerobic processes at various stages of the treatment plant. Atmospheric pollution of this nature frequently results in complaints from members of the public either resident, or perhaps employed in the vicinity of such works. In order to confirm or deny that a reclamation works is responsible for a particular nuisance and, if possible to identify the causal agents it was decided that the Authority should have the capability of analysing for odorous and other polluting constituents of the atmosphere. This paper describes the progress made towards this objective and summarises the experience gained with a procedure in use. There are two principle approaches available for the analytical classification of odorous emissions -... [Pg.322]

One very common reason for the confusion is that the factor is identified on the basis of observation rather than experiment [Snedecor and Cochran (1980)]. In the wine-making process, it was observed that dryness is related to the time of the season the causal relationship between time of year and dryness was assumed. In a second example, it was observed that percent alcohol is related to foaming the causal relationship between foaming and alcohol content was assumed. [Pg.8]

But consider what happened in the foaming example when additional foaming agents were introduced. The single factor foaming was deliberately changed. An experiment was performed. The result of the experiment clearly disproved any hypothesized causal relationship between alcohol content and foaming. [Pg.8]

Lead exposure Not a substitute for effective abatement of lead exposure. Neutropenia Mild to moderate neutropenia has been observed in some patients receiving succimer. While a causal relationship to succimer has not been definitely established, neutropenia has been reported with other drugs in the same chemical class. Obtain a complete blood count with white blood cell differential and direct platelet counts prior to and weekly during treatment. Withhold or discontinue therapy if the absolute neutrophil count (ANC) is below 1200/mcL and follow the patient closely to document recovery of the ANC to above 1500/mcL or to the patient s baseline neutrophil count. There is limited experience with reexposure in patients who have developed neutropenia. Therefore, rechallenge such patients only if the benefit of succimer therapy clearly outweighs the potential risk of another episode of... [Pg.375]

People ask themselves, If I experience X, is it because of the illness, the medication, or is it just me Such confusion not only undercuts the ability to manage one s own illness, as expressed above, but also raises questions about personal identity. The inability to trace with any certainty the causal relationships between one s life experiences, one s illness, and one s drug regimen renders obscure the nature of the authentic self that most of us believe we possess ... [Pg.119]

A number of variables influence the likelihood of an adverse event being reported. These include the length of time that a product has been marketed, the market share, experience and sophistication of the population using the product, and publicity about adverse events. Currently there is little incentive for health professional reporting of adverse events, which partially imderlies the problem with underreporting. Lack of exposure data and the issue of underreporting preclude estimation of incidence rates. Causality assessment is difficult or impossible because of the quality of the data received and the lack of a comparator (control) group. Finally, comparisons of product safety cannot be directly obtained from adverse event data. [Pg.280]


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See also in sourсe #XX -- [ Pg.472 , Pg.473 , Pg.474 ]




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