Laboratory measurements and methane photochemistry modeling

Methane is photolyzed by the solar UV in the stratosphere of Saturn. Subsequent photochemistry leads to the production of acetylene (C2H2) and diacetylene (C4H2). These species are produced where it is relatively warm (T is greater than or equal to 140 K), but the tropopause temperature of Saturn (approximately 80 K) is low enough that these two species may freeze out to their respective ices. Numerical models which include both photochemistry and condensation loss make predictions about the mixing ratios of these species and haze production rates. These models are dependent upon knowing reaction pathways and their associated kinetic reaction rate constants and vapor pressures. How uncertainties in the chemistry and improvements in the vapor pressures affect model predictions for Saturn are discussed

Ethylene line emission from the North Pole of Jupiter

A significant enhancement in infrared emission from hydrocarbon constituents of Jupiter's stratosphere was observed at a north polar hot spot (60 degrees latitude, 180 degrees longitude). A unique probe of this phenomena is ethylene (C2H4), which has not been observed previously from the ground. The profile of the emission line from ethylene at 951.742 cm-1, measured near the north pole of Jupiter, was analyzed to determine the morphology of the enhancement, the increase in C2H4 abundance and local temperature, as well as possible information on the altitude (pressure regions) where the increased emission is formed. Measurements were made using infrared heterodyne spectroscopy at the NASA Infrared Telescope Facility on Mauna Kea, Hawaii in December 1989. At 181 degrees longitude a very strong emission line was seen, which corresponds to a 13-fold increase in C2H4 abundance or a 115K increase in temperature in the upper stratosphere, compared to values outside the hot spot. The hot spot was found to be localized to approx. 10 degrees in longitude; the line shape (width) implied that the enhanced emission originated very high in the stratosphere

Uso da lógica hídrica e radioativa para avaliar o processo de desertificação no Nordeste Brasileiro.

Este trabalho objetiva avaliar o processo de desertificação em 4 núcleos no Nordeste Brasileiro por meio da análise da lógica hídrica/radioativa a partir de imagens de sensores orbitais. Neste estudo foram utilizadas imagens de albedo e de temperatura de superfície do satélite National Oceanic and Atmospheric Administration (NOAA), no período de 2003 a 2009 para as regiões de Cabrobó, Gilbués, Irauçuba e Seridó localizadas na região Nordeste do Brasil

Consumer Response to Corporate Irresponsible Behavior: Moral Emotions and Virtues

A unique theoretical framework for explaining consumer word of mouth and protest behaviors against corporate irresponsibility is developed and tested. Through field surveys with adult consumers, this study demonstrates how consumers\u2019 negative moral emotional responses to corporate infractions instigate, in combination with other-regarding virtues, negative word of mouth and protest toward the corporation. Negative moral emotions include contempt, anger, and disgust; whereas other-regarding virtues entail justice, beneficence, and communal cooperation. The results provide scholars and managers with means of improving their understanding and handling of consumers\u2019 reactions to corporate irresponsibility

My anger is your gain, my contempt your loss: Explaining consumer responses to corporate wrongdoing

Two forms of consumer response to corporate wrongdoing are constructive punitive actions (i.e., those designed to induce firms to change their behavior but with the hope of sustaining relationships with consumers) and destructive punitive actions (i.e., those intended to discredit or harm firms, ultimately leading to disengagement from firms). This study investigates the conditions under which one or the other actions are taken and shows that anger regulates the former, whereas contempt governs the latter. Hypotheses are tested in two studies: a laboratory experiment and a naturalistic field study with an actual instance of recent corporate malfeasance. Theoretical and managerial implications are discussed

A quasilinear transmission problem with application to Maxwell equations with a divergence-free D-field

Maxwell equations in the absence of free charges require initial data with a divergence-free displacement field D. In materials in which the dependence D=D(E) is nonlinear the quasilinear problem 07 c5D(E)=0 is hence to be solved. In many applications, e.g. in the modelling of wave packets, an approximative asymptotic ansatz of the electric field E is used, which satisfies this divergence condition at t=0 only up to a small residual. We search then for a small correction of the ansatz to enforce 07 c5D(E)=0 at t=0 and choose this correction in the form of a gradient field. In the usual case of a power type nonlinearity in D(E) this leads to the sum of the Laplace and p-Laplace operators. We also allow for the medium to consist of two different materials so that a transmission problem across an interface is produced. We prove the existence of the correction term for a general class of nonlinearities and provide regularity estimates for its derivatives, independent of the L2-norm of the original ansatz. In this way, when applied to the wave packet setting, the correction term is indeed asymptotically smaller than the original ansatz. We also provide numerical experiments to support our analysis

Reshoring from a demand-side perspective: Consumer reshoring sentiment and its market effects

Reshoring is the company decision to relocate activities back to the home country. Our study complements the existing research in IB by adopting a demand-side perspective. We identify new, demand-based drivers for reshoring that integrate with the firm-based ones, thereby further informing the company decision process in this context. We develop a Consumer Reshoring Sentiment (CRS) scale through multiple studies conducted on consumers (total =1149) in two countries. Our findings reveal: six demand-based drivers that compose CRS; a link between CRS and consumer willingness to reward the reshoring company; and the effectiveness of CRS in segmenting and targeting the market

Consumer Reshoring Sentiment and Animosity: Expanding our understanding of market responses to reshoring

Although an increasing body of research has focused attention on reshoring, namely, a company’s decision to relocate activities back to the home-country, how and when reshoring impacts market responses remains largely understudied and requires specific theoretical and empirical consideration. Our study complements existing research on reshoring by adopting a demand-side perspective. Through multiple, experimental and survey-based studies, conducted in two countries (Italy and the US), we verified that the interplay between Consumer Reshoring Sentiment (CRS) and Consumer Animosity (CA) leads to specific emotional reactions (gratitude and relief) which, in their turn, affect relevant market responses (positive word of mouth, willingness to buy, advocacy behaviors). Our work provides interesting insights for practitioners and international managers evaluating reshoring; they can capitalize on the positive market responses to reshoring by considering both reshoring sentiments characterizing the home-country market and consumer animosity associated with tensions between the countries involved in the reshoring decision