51,068 research outputs found
The "Double Sense" of Fichte's Philosophical Language - Some Critical Reflections on the Cambridge Companion to Fichte
The principal thesis in this review-essay is that the key linguistic terms in Fichte’s Wissenschaftslehre especially have two main meanings that appear at first sight to be almost in contradiction or opposed to each other. The reader of Fichte therefore has to work hard to overcome any apparent conflicts in the “double sense” of his philosophical terminology. Accordingly, I argue that Fichte’s linguistic method and use of language should be seen as part of his chief philosophical method of synthesis, where we have to carry out a similar procedure and attempt to reconcile opposites using the power of the imagination. This thesis is put forward by means of a number of practical examples and in the context of some critical reflections on the recently published Cambridge Companion to Fichte, eds. David James and Günter Zöller. Review essay published in Volume 15 (December, 2017) of the journal Revista de Estud(i)os sobre Fichte (ed. Emiliano Acosta)
Synthetic natural gas in California: When and why
A coal gasification plant planned for northwestern New Mexico to produce 250 MMCFD of pipeline quality gas (SNG) using the German Lurgi process is discussed. The SNG will be commingled with natural gas in existing pipelines for delivery to southern California and the Midwest. Cost of the plant is figured at more than 255,000 for each day of delay. Plant start-up is now scheduled for 1984
Time and energy dependence of the cosmic ray gradient in the outer heliosphere
Pioneers 10 and 11, now 35 and 18 AU from the Sun, continue to extend our knowledge of the spatial dependence of cosmic ray intensities in the heliosphere. Radial gradients measured from these spacecraft by UCSD detectors which have integral energy responses above thresholds of 80 and 500 MeV/nucleon are reported. An average gradient of 2%/AU typifies the data set as a whole, but there are time and energy dependences that deviate from this value. With operating lifetimes of 13 and 12 years, respectively, for the two spacecraft, the time dependence was followed for over a solar cycle. The higher energy channel shows less modulation on all time scales. At the start of the present cycle, the gradient is lower than the average value during the last solar cycle
The empirics of trade and growth: where are the policy recommendations?
Existing literature repeatedly documented a strong correlation between trade and growth. It has also shown a causal effect of imports (though not necessarily exports) on growth in simultaneous equation models but to a lesser extent in Granger-causality tests. Export and import taxes have sometimes been found to negatively affect growth. Drawing policy conclusions from these general findings for a particular country is difficult not only because of the contradictory results but also because of potential second best world effects and the implied endogeneity of trade policy. Policy recommendations for a specific country require a careful analysis of market and institutional arrangements and can not be based on the existing cross-country literature.theoretical trade and growth studies, empirical trade and growth studies, policy recommendations, W�lde, Wood
Values of the photometric parameters of Mars and their interpretation
Photometric data for the Martian disk obtained by Thorpe from television-camera pictures taken by Mariner 9 were used to derive values for the parameters in the photometric function. The photometric function can be applied to Mars and to the design of cameras for photography of Mars. Values of the parameters are for one wavelength only, 0.56 micros and are average or effective values for the Martian disk. The values derived were interpreted to provide semi-quantitative information on the soil. The results do not disagree with other indications that the effective mean diameter of the surface particles is about 400 micros. Another result is that the mean intercenter spacing of adjacent particles may be about 4/3 of the mean diameter
Saddlepoint approximation for moment generating functions of truncated random variables
We consider the problem of approximating the moment generating function (MGF)
of a truncated random variable in terms of the MGF of the underlying (i.e.,
untruncated) random variable. The purpose of approximating the MGF is to enable
the application of saddlepoint approximations to certain distributions
determined by truncated random variables. Two important statistical
applications are the following: the approximation of certain multivariate
cumulative distribution functions; and the approximation of passage time
distributions in ion channel models which incorporate time interval omission.
We derive two types of representation for the MGF of a truncated random
variable. One of these representations is obtained by exponential tilting. The
second type of representation, which has two versions, is referred to as an
exponential convolution representation. Each representation motivates a
different approximation. It turns out that each of the three approximations is
extremely accurate in those cases ``to which it is suited.'' Moreover, there is
a simple rule of thumb for deciding which approximation to use in a given case,
and if this rule is followed, then our numerical and theoretical results
indicate that the resulting approximation will be extremely accurate.Comment: Published at http://dx.doi.org/10.1214/009053604000000689 in the
Annals of Statistics (http://www.imstat.org/aos/) by the Institute of
Mathematical Statistics (http://www.imstat.org
A dynamical symmetry breaking model in Weyl space
The dynamical process following the breaking of Weyl geometry to Riemannian
geometry is considered by studying the motion of de Sitter bubbles in a Weyl
vacuum. The bubbles are given in terms of an exact, spherically symmetric thin
shell solution to the Einstein equations in a Weyl-Dirac theory with a
time-dependent scalar field of the form beta = f(t)/r. The dynamical solutions
obtained lead to a number of possible applications. An important feature of the
thin shell model is the manner in which beta provides a connection between the
interior and exterior geometries since information about the exterior geometry
is contained in the boundary conditions for beta.Comment: 18 pages, RevTex, to be published in J. Math. Phy
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