The risk of solar proton events to space missions

The total dose in rads-tissue from solar protons was tabulated for weekly time intervals, and the number of weeks which gave a dose above 25 rads behind 10 g/sq cm of aluminum for the active 6 years of the 19th cycle were called dangerous or large event weeks. The number of such event weeks was found to be only 3 weeks for the past 20 years. Even though the chance for smaller events is examined, it was found that for any reasonable, high confidence level (95%), the smaller events could be ignored. Consequently, the total particle flux for the 19th cycle was divided by a factor of 3 and determined a single large event week. Using this spectrum, the tissue dose in rads is calculated at the center of an aluminum spherical shell

Art or science? The challenges of publishing peer reviewed papers based on linked models

The methodology used in a linked model system is generally too voluminous and of insufficient interest to form the basis of a peer-reviewed journal article. To be readily acceptable to an economics journal, the simulation results should provide economic insight and contribute to the economics literature.quantitative integrated assessment, empirical models, “black boxâ€, Agricultural and Food Policy, Teaching/Communication/Extension/Profession,

An empirical investigation of the demand for bananas in Germany

We use econometric methods to investigate consumer demand for bananas and for other fruit in Germany. Monthly household survey data for the period 1986-1998 are analysed. Demand for bananas is significantly responsive to own price, suggesting that policy-induced price increases generate the usual dead-weight losses. Demand is also responsive to income changes, indicating that there is scope for further market expansion as incomes grow. There is evidence that other categories of fruit are both gross and net substitutes for bananas.bananas, fruit, dynamic demand system, Germany, Demand and Price Analysis,

Orbital calculations and trapped radiation mapping

Flux and energy spectra code for orbital calculations and trapped radiation mappin

Bounds on Information Propagation in Disordered Quantum Spin Chains

We investigate the propagation of information through the disordered XY model. We find, with a probability that increases with the size of the system, that all correlations, both classical and quantum, are suppressed outside of an effective lightcone whose radius grows at most polylogarithmically with |t|.Comment: 4 pages, pdflatex, 1 pdf figure. Corrected the bound for the localised propagator and quantified the probability it bound occur

Does Pig Density Matter for the Choice of Control Strategies in Classical Swine Fever Epidemic?

This paper examines the importance of pig population density in the area of an outbreak of CSF for the spread of the disease and the choice of control measures. A sector-level market and trade model and a spatial, stochastic, dynamic epidemiological simulation model for the Netherlands were used. Outbreaks in sparsely and densely populated areas were compared under four different control strategies and with two alternative trade assumptions. Results indicate that the control strategy required by current EU legislation is enough to eradicate an epidemic starting in an area with sparse pig population. By contrast, additional control measures are necessary if the outbreak begins in an area with high pig population density. The economic consequences of using preventive slaughter rather than emergency vaccination as an additional control measure depend strongly on the reactions of trading partners. Reducing the number of animal movements significantly reduces the size and length of epidemics in areas with high pig density.Classical Swine Fever epidemics, pig population density, animal transport, emergency vaccination, preventive slaughter, the Netherlands, Livestock Production/Industries,

To Be a Man: A Re-Assessment of Black Masculinity in Lorraine Hansberry\u27s A Raisin in the Sun and Les Blancs

The first Black woman to pen a Broadway play, Lorraine Hansberry scripted a majority of male protagonists. Critics tend to see Hansberry’s depiction of Black men as either an unfortunate departure from her feminist concerns, or as damaging representations of Black masculinity. In contrast to such views, this essay maps the trajectory of Hansberry’s career-long project of scripting positive visions of Black masculinity, from the politically progressive, while still patriarchal, structures of masculinity in A Raisin in the Sun, to the heterogeneous performances of revolutionary masculinity in Les Blancs. Further, in her role as public intellectual, Hansberry questioned prevailing assumptions about masculinity during her time. In the pages of The Village Voice, Hansberry challenged a group of white writers she termed the “new paternalists,” including Jean Genet and Norman Mailer, in order to dismantle stereotypes of Black men as violent and hypersexual

Alien Registration- Burrell, Isabelle M. (Millinocket, Penobscot County)

https://digitalmaine.com/alien_docs/7975/thumbnail.jp

IN THE EYE OF THE BEHOLDER? OPPORTUNITIES AND CONSTRAINTS OF SCIENTIFIC POLICY ANALYSIS FOR AGRICULTURE

Agricultural and Food Policy,