4,968 research outputs found
Cooperation and Wealth
No full textWe calculate the equilibrium fraction of cooperators in a population in which payoffs accrue from playing a single-shot prisoner’s dilemma game. Individuals who are hardwired as cooperators or defectors are randomly matched into pairs, and cooperators are able to perfectly find out the type of a partner to a game by incurring a recognition cost. We show that the equilibrium fraction of cooperators relates negatively to the population’s level of wealth.Equilibrium fraction of cooperators, Population's level of wealth, Single-shot prisoner's dilemma game
Malcolm Stark Correspondence
No full textEntries include typed correspondence on The Camden Herald Publishing Company stationery concerning the whereabouts of Mr. Stark, a handwritten letter from Stark on plain paper, and a typed letter on receipt of the Maine poet\u27s book Way Out and Close About for the Maine Author Collection
Benjamin Stark Portrait
No full textA portrait of "Colonel" Benjamin Stark (1820-1898), issued by the Davies Studio in Portland circa 1890.
Stark was the son of a sea captain from New London, Connecticut who became a shipping merchant. He was one of the earliest white landowners in what later became Portland, purchasing land on speculation there in 1846. He moved to Portland as a merchant in 1850, then served in the Oregon Territorial House of Representatives as a Whig in 1852-3. In the mid-1850s, he served in Oregon's militia, during repressive acts against tribes during the Rogue River Wars and Yakima Wars. On the eve of the Civil War in 1860, he was elected to the Oregon Legislature as a conservative pro-slavery Democrat. When Oregon's Republican Senator Edward Baker died in 1861, the governor appointed Stark in his place. After filling out the term, Stark returned to Connecticut, but he continued to influence Portland's development through his properties. A street in Portland was once named for him, but it was renamed Harvey Milk Street in 2018
Inequality and Migration: A Behavioral Link
No full textWe provide an analytical-behavioral explanation for the observed positive relationship between income inequality, as measured by the Gini coefficient, and the incentive to migrate. We show that a higher total relative deprivation of a population leads to a stronger incentive to engage in migration for a given level of a population’s income; that total relative deprivation is positively related to the Gini coefficient; and that, consequently, the Gini coefficient and migration are positively correlated, holding the population’s income constant.Income inequality, Relative deprivation, The Gini coefficient, The incentive to migrate
Walter Benjamin and the genesis of modern city life
No full textTato diplomová práce se zabývá vznikem moderního městského života - jeho prostory (ulice, pasáže, obchodní domy) a postavami, kulturními a osobnostními vzorci chování (flanér, jogger, atd.). Walter Benjamin, literární kritik, esejista a filosof, věnoval část své tvorby právě zrodu městského způsobu života na přelomu 19. a 20. století. Postupně jsou představeny Benjaminovy inspirační zdroje (Fourier, Baudelaire), poté jeho současníci (Simmel) a následují myslitelé dnešní doby, které Benjamin ovlivnil (Bauman, Didi-Huberman).Katedra filozofieObhájenoThis thesis investigates the genesis of modern city life. Special attention is paid to municipal space (streets, arcades, department stores) and typified patterns of behaviour (flaneur, jogger). Walter Benjamin, a literary critic, essayist and philosopher dedicated part of his work to the city way of life on the turn of 19th and 20th century. I focus on Benjamin´s inspirational sources (Charles Baudelaire, Charles Fourier), his contemporaries (Georg Simmel) as well as on authors influenced by Walter Benjamin nowadays (Zygmunt Bauman, Didi-Huberman
Liu Hao et al. (2016): Determination of Stark parameters by cross-calibration in a multi-element laser-induced plasma
No full textOriginal data for the article "Determination of Stark parameters by cross-calibration in a multi-element laser-induced plasma" by Liu Hao, Benjamin S Truscott and Michael N R Ashfol
Liu Hao et al. (2015): Position- and time-resolved Stark broadening diagnostics of a non-thermal laser-induced plasma
No full textOriginal data and supplementary information for the article "Position- and time-resolved Stark broadening diagnostics of a non-thermal laser-induced plasma" by Liu Hao, Benjamin S Truscott and Michael N R Ashfol
BIODESULFURIZATION IMPROVEMENT OF A SYMBIOTIC PAENIBACILLUS CULTURE UTILIZING VITREOSCILLA HEMOGLOBIN
No full textBiodesulfurization (BDS) of petroleum has been investigated as an alternative method to conventional chemical desulfurization for many years. Despite its potential to be an environmentally benign method, it has not been developed sufficiently to be useful in real world applications. This is due to its low efficiency and the necessity for it to work at temperatures high enough to lower the viscosity of petroleum so that mixing can be achieved. This study places the spotlight on two strains of Paenibacillus isolated in our laboratory that, together, possess biodesulfurization ability at moderately high temperatures and attempts to enhance biodesulfurization by expression of Vitreoscilla hemoglobin (VHb) in the Paenibacillus strains. The effects of expression of the VHb gene (vgb) on growth and desulfurizing activity was examined in a symbiotic system between the Paenibacillus strains 32O-Y and 32O-W. Of the two, 32O-Y is the one with the ability to metabolize dibenzothiophene (DBT), a common compound in petroleum that contains organic sulfur, while 32O-W enhances this ability, forming a symbiotic relationship between the two. The transformant of 32O-Y bearing vgb cloned into the shuttle vector pNW33N had been previously constructed in our laboratory. Presence of pNW33N-vgb was verified in one strain of 32O-Y through isolation of DNA, PCR, and gel electrophoresis. Mixtures of 32O-Y/32O-W or 32O-Y[pNW33N-vgb]/32O-W were cultured in minimal medium (CDM) with DBT as the sole sulfur source and subjected to multiple trials of growth and assay of DBT metabolism at varying temperatures. At 45 ˚C there was a substantial increase in both growth and DBT metabolizing coincident with VHb expression, whereas at lower (37 ˚C) and higher (50 ˚C) temperatures, VHb expression had little to no effect on either parameter. For both growth and DBT metabolism tested at 37 ˚C, 45 ˚C and 50 ˚C the highest absolute levels were seen at 37 ˚C, and the lowest at 45 ˚C.M.S. in Biology, May 201
A Stark future for quantum control
No full textWe present an overview of developments using the nonresonant dynamic Stark effect within the fields of time-resolved molecular dynamics and quantum control, drawing on examples from our own recent work. Particular emphasis is placed on the notion that "dynamics" and "control" are not distinct disciplines and that a clear synergy exits between these areas which has, up to now, been somewhat underexploited. The dynamic Stark effect is a universal interaction which we expect to have broad applicability. © 2011 American Chemical Society.</p
Manipulation of ferromagnets via the spin-selective optical Stark effect
No full textWe investigate the nonresonant all-optical switching of magnetization. We treat the inverse Faraday effect (IFE) theoretically in terms of the spin-selective optical Stark effect for linearly or circularly polarized light. In the dilute magnetic semiconductors (Ga,Mn)As, strong laser pulses below the band gap induce effective magnetic fields of several teslas in a direction which depends on the magnetization direction as well as the light polarization and direction. Our theory demonstrates that the polarized light catalyzes the angular momentum transfer between the lattice and the magnetization.QN/Quantum NanoscienceApplied Science
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