20,681 research outputs found
Correspondence regarding the possiblity of a Kephart Memorial
No full textThis 1968 correspondence, between Jackson E. Price and Dan Davis, discusses the possibility of “Memorial Center” to Horace Kephart (1862-1931), noted naturalist, woodsman, journalist, and author and promoter of the Great Smoky Mountains National Park
99 cent: Price points in e-commerce
No full textBasu (2006) argues that the prevalence of 99 cent prices in shops can be explained with rational consumers who disregard the rightmost digits of the price. This bounded rational behaviour leads to a Bertrand equilibrium with positive markups. We use data from an Austrian price comparison site and find results highly compatible with Basu's theory. We can show that price points - in particular prices ending in 9 - are prevalent and have significant impact on consumer demand. Moreover, these price points are sticky; neither the price-setter itself wants to change them neither the rivals do underbid these prices, if they represent the cheapest price on the market. --Competitive Behaviour,Pricing Behaviour,E-Commerce,Pricing in the Nines,Focal Pricing
A Hedonic Price Analysis for the New Zealand Wine Industry: Preliminary Results
No full textThis paper presents preliminary results from a hedonic price analysis of premium wines in New Zealand over the vintages 1994 – 2003. Implicit prices are presented for a sensory quality rating, as well as wine variety and regional reputation. Results show that the price premium associated with Michael Cooper's five-star quality rating is highly significant and increasing in magnitude over the study period. Trends in regional and varietal preferences are also explored.Hedonic pricing, New Zealand wine, quality, Agribusiness, Agricultural and Food Policy, Environmental Economics and Policy, Food Consumption/Nutrition/Food Safety, Research Methods/ Statistical Methods, Resource /Energy Economics and Policy,
AN APPLICATION OF RISK ANALYSIS: LOCALIZED CORN AND SOYBEAN PRICE DISTRIBUTIONS
No full textThis paper examines the spatial elements of marketing grain. The decision of " where" to market has been ignored due to data limitations and lack of necessity. The author will incorporate localized probability distributions of price/basis in an Excel spreadsheet using @RISK which will evaluate marketing decisions for producers.Crop Production/Industries, Risk and Uncertainty,
Dataset regarding "Multi-scale investigations of cold-water coral habitat using novel technology and advanced image analysis."
No full textThis dataset supports the thesis: Multi-scale investigations of cold-water coral habitat using novel technology and advanced image analysis, University of Southampton, 2021.
It comprises three parts:
SDM CWC Explorer Canyon Data (related to findings presented in chapter two)
Linear SfM transect CWC rugosity (related to findings presented in chapter three)
Annotations of Piddington Mound taxa (related to findings presented in chapter four) </span
Dataset for 'Overlapped pulsed pumping of tandem pumped fiber amplifiers to increase achievable pulse energy'
No full textDataset for the article:
A. Malinowski, J. H. V. Price and M. N. Zervas, "Overlapped Pulsed Pumping of Tandem Pumped Fiber Amplifiers to Increase Achievable Pulse Energy," in IEEE Journal of Quantum Electronics, vol. 53, no. 2, pp. 1-8, April 2017.
doi: 10.1109/JQE.2017.2657334
It has been reported previously that in the regime appropriate for amplifying femtosecond pulses using the chirped pulse amplification technique in Yb-fiber sources that sub-micro-second pulsed tandem pumping not only provides the thermal benefits of c.w. tandem pumping, but also enables strong suppression of ASE. In that case, the pump pulse preceded the signal pulse train. Here, we propose a tandem pumping scheme in rare-earth-doped fiber amplifiers, where a train of signal pulses is amplified by a pump pulse, which is almost exactly temporally overlapped. Simulations demonstrate that this can be used to create uniform gain across the signal pulse train, even at very high total pulse energies, where there would be significant gain shaping in the previous case. In addition, the pump is absorbed in a much shorter length, which increases the threshold for nonlinear effects and gain of greater than 26 dB is shown to be readily achievable in an amplifier as short as 1.5 m. This results in increased extractable energy before reaching the threshold for limiting nonlinear effects, such as stimulated Raman scattering. These attributes should be attractive for high energy, high average power, ultrashort pulse, coherently combined fiber laser systems.</span
Light-mediated switching of circadian pacemaker function across the neural clock circuit of drosophila
No full textCircadian clocks evolved as internal timekeeping mechanisms in response to the spinning of the Earth on its axis. Many vital bodily functions such as daily temperature regulation and sleep/wake cycles are tightly controlled by circadian clocks that are coordinated throughout the mammalian body by the suprachiasmatic nucleus in the brain. The molecular clock of the fruit fly Drosophila melanogaster is very similar to our own, making this insect a useful model to study our own clock. Drosophila possess a group of ‘morning’ neurons, which control the clock pacemaker at night, alternating with the ‘evening’ neurons, which control it during the day. My project aims to elucidate the signalling mechanisms that cause the switch in this pacemaker function. The morning cells are the lead pacemakers in constant darkness (DD) but more recent research indicates that the more poorly defined group of evening cells drive rhythms in continuous light. The experimental paradigms of DD and constant red light (RR) allow stable conditions within which pacemaker function is led by two distinct subsets. Spatiotemporal mapping using more specifically targeted genetic tools indicates that the PIGMENT-DISPERSING FACTOR (PDF)-expressing 4 small ventrolateral neurons (s-LNvs) per hemisphere are both sufficient and necessary as DD pacemakers while the MB122B-Gal4-driven or ChAT-Gal4-driven clock cells (5th s-LNv plus three LNds) are identified, here, as sufficient for RR pacemaker function. However, in order to fully eliminate RR rhythmicity, molecular clock function must additionally be eliminated within all PDF+ cells, suggesting that these cells also play a role in RR pacemaker function. Targeted RNA interference of PDF in the s-LNvs eliminated behavioural rhythmicity in DD, but not RR. Genetic disruptions of several different components of predicted output pathways such as the neuropeptides HUGIN (HUG), LEUCOKININ (LK), SMALL NEUROPEPTIDE F (SNPF), the neuropeptide receptors DH44 RECEPTOR 1 (DH44-R1), LK RECEPTOR (LKR) or dopaminergic ‘PPM3’ neurons indicated they were downstream of the RR pacemakers in addition to the DD pacemakers. Throughout these studies as well as published studies by others, genetic background played a role in the severity of the observed behavioural phenotypes. For example, locomotor rhythmicity persisted in some Pdf or Pdf receptor-null backgrounds but not others. In particular, an autosomal modifier of rhythmicity that co-segregated with a known polymorphisms at the tim locus was detected. The insights into light-induced pacemaker switching within the Drosophila clock raises hypotheses that can be pursued in mammalian neuronal clocks
Price hedonics: a critical review
No full textThis paper was presented at the conference "Economic Statistics: New Needs for the Twenty-First Century," cosponsored by the Federal Reserve Bank of New York, the Conference on Research in Income and Wealth, and the National Association for Business Economics, July 11, 2002. The main objective of this paper is to make a start in the evaluation of price hedonics. The author describes the hedonic model and reviews its main uses, because the credibility of price hedonics depends in part on the current state of academic research. This is a brief overview. The author then turns to some of the standard criticisms of price hedonics and moves into the uncharted waters of the political economy of price measurement.Statistics ; Prices ; Consumer price indexes
One-dimensional magnetism in anhydrous iron and cobalt ternary oxalates with rare trigonal-prismatic metal coordination environment
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