Efficient causality

Notice that, in this passage, the Object determines the Sign, which, in turn determines the Interpretant. These determinations cannot be made by efficient causality. Functioning of signs depends on a purposeful context the several determinations referred to in this passage must function through the finious causal mode outlined above. 

It is obvious that the occult quaUties and substantial forms populating Sennert s world acted not only as an acknowledgement of observational limits, but as a source of efficient causality." The atoms involved in chymical operations derived the sympathy and antipathy leading to diakrisis and synkrisis from the occult qualities provided by their substantial forms. But this raises a serious problem. Where should one draw the line between perceptible qualities caused by structural factors and those flowing directly from the substantial form We know that Sennert by 1619 (if not earlier) believed forms to be immutable, and yet in some instances, such as the transmutation of base metals in chrysopoeia, he explicitly says that forms can be removed and replaced." How are we to interpret... 

Marmura, Michael E. The Metaphysics of Efficient Causality in Avicenna (Ibn Slna) . In Islamic Theology and PhUosophy. Edited by Michael Marmura. Albany, NY State University of New York Press, 1984,172-187. 

Wisnovsky, Robert Final and Efficient Causality in Avicenna s Cosmology and Theology . Quaestio 2 (2002) 97-123. 

Marc Van Regenmortel I want to ask Alex whether he believes that explanations must necessarily possess causal efficacy or efficiency. In other words, if you take a reductionist approach, must you necessarily go on believing in linear causality. .. ... 

If necessary to assist in determining the actual incident scenario from two or more possible scenarios, a fact/hypothesis matrix may be employed to help resolve conflicting facts. This is most efficiently performed prior to identifying the causal factors. 

Similarly, vesicular reactivity is dependent on bilayer fluidity and Arrhenius (or Eyring) plots for the decarboxylation of 6-NBIC show a break around Tm. " For the Kemp elimination in different bilayers, it was found that the bilayer for which kinetic data had been gathered below its was least effective as a catalyst. Ester hydrolysis has also been found to be faster above r. For the decarboxylation of 6-NBIC, the increase in catalytic efficiency was attributed to different aggregate surface dynamics based on the observation that vesicles above showed intermediate activation parameters between vesicles below and micelles. One could, of course, discuss causality here considering the fact that many of the bilayer... 

In an efficient digital simulation, lumped loss factors of the form Gk (0)) are approximated by a rational frequency response Gk(c,mT). In general, the coefficients of the optimal rational loss filter are obtained by minimizing I Ylk (go) - Gk d r ) I with respect to the filter coefficients or the poles and zeros of the filter. To avoid introducing frequency-dependent delay, the loss filter should be a zero-phase, finite-impluse-response (FIR) filter [Rabiner and Gold, 1975], Restriction to zero phase requires the impulse response g.k(n) to be finite in length (i.e., an FIR filter) and it must be symmetric about time zero, i.e., ) k(-n) = gk(n). In most implementations, the zero-phase FIR filter can be converted into a causal, linear phase filter by reducing an adjacent delay line by half of the impulse-response duration. 

If it is, as some people say, correct that today s bioengineering with all its tools and methodologies is too slow and not efficient enough, then it is all the more urgent to improve the performance of the methods, tools and equipment currently available and to invent new and better ones. In essence, techniques of instrumentation, operation, and causal-analytical interpretation of measurements need massive impulses. 

What of its potential toxicity to humans There have been no documented deaths and no established cases of illness in which DDT is the causal agent but it is stfil detectable in the environment and in some food. Because the levels of such substances in food are monitored and we have efficient detoxication systems, and because DDT tends to be stored in fat, it is likely that the potential toxicity is minimal. 

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