163,692 research outputs found
Creative Assets and the Changing Economy
No full textThis paper evaluates recent claims that art and culture have become more valuable assets in the new economy. Based on conversations with several prominent cultural economists, the author argues that advocates and scholars should be more cautious in their attempts to draw out the implications of the changing economy on culture. Rather than spend time calculating the impact or size of the “creative economy,” the author argues that we should direct our analytical and policy energies toward better understanding how creative work and institutions are changing and what might be done to foster a more robust, creative and diverse cultural life.
Sonate à quatre mains composée et dediée à S. A. J. Madame la Grande Duchesse Anna Feodorowna : Oeuv. XVIII / par Son très humble et très obeissant Serviteur G. Tepper de Ferguson
No full textSONATE À QUATRE MAINS COMPOSÉE ET DEDIÉE À S. A. J. MADAME LA GRANDE DUCHESSE ANNA FEODOROWNA : OEUV. XVIII / PAR SON TRÈS HUMBLE ET TRÈS OBEISSANT SERVITEUR G. TEPPER DE FERGUSON
Sonate à quatre mains composée et dediée à S. A. J. Madame la Grande Duchesse Anna Feodorowna : Oeuv. XVIII / par Son très humble et très obeissant Serviteur G. Tepper de Ferguson (1)
Titelseite (1)
Sonata (2
Extracting finite structure from infinite language
No full textThis paper presents a novel connectionist memory-rule based model capable of learning the finite-state properties of an input language from a set of positive examples. The model is based upon an unsupervised recurrent self-organizing map [T. McQueen, A. Hopgood, J. Tepper, T. Allen, A recurrent self-organizing map for temporal sequence processing, in: Proceedings of Fourth International Conference in Recent Advances in Soft Computing (RASC2002), Nottingham, 2002] with laterally interconnected neurons. A derivation of functionalequivalence theory [J. Hopcroft, J. Ullman, Introduction to Automata Theory, Languages and Computation, vol. 1, Addison-Wesley, Reading, MA, 1979] is used that allows the model to exploit similarities between the future context of previously memorized sequences and the future context of the current input sequence. This bottom-up learning algorithm binds functionally related neurons together to form states. Results show that the model is able to learn the Reber grammar [A. Cleeremans, D. Schreiber, J. McClelland, Finite state automata and simple recurrent networks, Neural Computation, 1 (1989) 372–381] perfectly from a randomly generated training set and to generalize to sequences beyond the length of those found in the training set
Technology plays key role in new American culture; Ivey and Tepper of Vanderbilt's Curb Center edit new book
No full textIncludes descriptive metadata provided by producer in MP3 file: "With technology playing an increasing important role in the development of American culture today, two classes are developing with regards to cultural opportunities. Those who have the education, skills, financial resources and more are able to navigate the seat of cultural choices and access new cultural opportunities, according to Steven Tepper, associate director of Vanderbilt University's Curb Center for Art, Enterprise and Public Policy.
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
Stochastic absorption of the light of background sources due to intergalactic neutral hydrogen - I. Testing different line-number evolution models via the cosmic flux decrement
No full textWe test the accuracy of different models of the attenuation of light due to resonant scattering by intergalactic neutral hydrogen by comparing their predictions of the evolution of the mean cosmic flux decrement, D-A, to measurements of this quantity based on observations. To this end, we use data available in the literature and our own measurements of the cosmic flux decrement for 25 quasars in the redshift range 2.71 < z(em) < 5.41 taken from the Sloan Digital Sky Survey (SDSS) Data Release 5. In order to perform the measurements of D-A, we fit a power law to the continuum redward of the Ly alpha emission line, and extrapolate this fit to region blueward of it, where the flux is severely affected by absorption due to intervening H-I absorbers. We compute, using numerical simulations, the redshift evolution of D-A accounting for the presence of Ly alpha forest absorbers and Lyman limit systems randomly distributed along the line-of-sight, and compute its intrinsic scatter at the 1 sigma, 2 sigma and 3 sigma level due to fluctuations in the absorber properties (column density, Doppler parameter, redshift) along different lines-of-sight. The numerical simulations consist of Monte Carlo realizations of distributions of the absorber properties constrained from observations. The results from the models considered here confirm our theoretical expectation that the distribution of D-A at any given redshift be well described by a lognormal distribution function. This implies that the effective optical depth, usually defined as the negative logarithm of the average flux, 1 -D-A, is very accurately Gaussian distributed, in contrast to previous studies. This result is independent of the form of the input distribution functions, and rather insensitive to the presence of high column density absorbers, such as the Lyman limit systems. By comparing our and previous measurements of D-A to the outcomes of our simulations, we find an excellent agreement between the observations and the evolution of the mean D-A as predicted by one of the models considered in this work. The observed scatter in D-A at each redshift, however, cannot be recovered from our simulations. Even though there is evidence for the fact that the lack of agreement between models and observations comes from the combination of heterogeneous measurement sets obtained by different methods, the failure of the models to accurately account for the absorption by intergalactic Ly alpha absorbing systems and its variation along different lines-of-sight cannot be completely ruled out
Taste, Nutrition, and Health
No full textThe sensation of flavour reflects the complex integration of aroma, taste, texture, and chemesthetic (oral and nasal irritation cues) from a food or food component. Flavour is a major determinant of food palatability-the extent to which a food is accepted or rejected-and can profoundly influence diet selection, nutrition, and health. Despite recent progress, there are still gaps in knowledge on how taste and flavour cues are detected at the periphery, conveyed by the brainstem to higher cortical levels and then interpreted as a conscious sensation. Taste signals are also projected to central feeding centers where they can regulate hunger and fullness. Individual differences in sensory perceptions are also well known and can arise from genetic variation, environmental causes, or a variety of metabolic diseases, such as obesity, metabolic syndrome, and cancer. Genetic taste/smell variation could predispose individuals to these same diseases. Recent findings have also opened new avenues of inquiry, suggesting that fatty acids and carbohydrates may provide nutrient-specific signals informing the gut and brain of the nature of the ingested nutrients. This special issue on "Taste, Nutrition, and Health" presents original research communications and comprehensive reviews on topics of broad interest to researchers and educators in sensory science, nutrition, physiology, public health, and health care
Absorption signatures of warm-hot gas at low redshift: Ne VIII
No full text
At z {lt} 1 a large fraction of the baryons is thought to reside in diffuse gas that has been shock-heated to high temperatures (10-10 K). Absorption by the 770.41, 780.32 å doublet of Ne VIII in quasar spectra represents a unique tool to study this elusive warm-hot phase. We have developed an analytic model for the properties of Ne VIII absorbers that allows for an inhomogeneous metal distribution. Our model agrees with the predictions of a simulation from the OverWhelmingly Large Simulations project indicating that the average line-of-sight metal-filling fraction within the absorbing gas is low (c { ilde} 0.1). Most of the Ne VIII in our model is produced in low-density, collisionally ionized gas (n = 10-10 cm, T = 10-10 K). Strong Ne VIII absorbers (log(N/cm){gsim}14), like those recently detected by Hubble Space Telescope/Cosmic Origins Spectrograph, are found to arise in higher density gas (n {gsim} 10 cm, T {ap} 5 { imes} 10 K). Ne VIII cloudlets harbour only 1 per cent of the cosmic baryon budget. The baryon content of the surrounding gas (which has similar densities and temperatures as the Ne VIII cloudlets) is a factor c_L^{}{-1} higher. We conclude that Ne VIII absorbers are robust probes of shock-heated diffuse gas, but that spectra with signal-to-noise ratios S/N {gt} 100 would be required to detect the bulk of the baryons in warm-hot gas.Computational astrophysicsGalaxiesLarge scale structure and cosmolog
- …
