Political philosophy and political action: Science, social science and the American experience

[Δε διατίθεται περίληψη / no abstract available][Δε διατίθεται περίληψη / no abstract available

Populism and its perils: language and politics

Populism appeals to the masses, and against elites. To the extent that any successful democracy must respond to popular desires, democracies must incorporate some elements of populism. Nevertheless, for continued success a democratic polity also must ensure widespread education, including a concern for language and the ability to analyze and resist “mind manipulators”

Establishing the Temporal Relationship Between Religious Commitment, Sexual Identity Struggles, and Religious Struggles Among Sexual Minorities

Objective: Conclusions about the temporal relationship between religiousness and both religious and sexual identity struggles are frequently made in the absence of longitudinal data. The present study examines the temporal relationship between religious identification, sexual identity struggles, and religious struggles. Methods: Participants were 132 Latter-day Saint sexual minorities who provided data at two timepoints, two years apart. We employed two cross-lagged panel models, one focusing on religious struggles and religious commitment and the other focusing on sexual identity struggles and religious commitment, to understand the temporal relationships between these variables. Results: Cross-lagged panel models suggested that interpersonal religious struggles and sexual identity uncertainty at time 1 were negatively related to religious commitment at time 2. Similarly, religious commitment at time 1 was related to decreased sexual identity affirmation and increased religious doubt at time 2. Conclusions: Although there is some degree of reciprocity to the relationship between religious/sexual identity struggles and religious commitment, certain struggles (interpersonal religious struggles, identity uncertainty) predicted later decreases in religious commitment, and religious commitment predicted an increase in certain types of struggles (religious doubt, lack of sexual identity affirmation)

Will the Three Gorges Dam affect the underwater light climate of Vallisneria spiralis L. and food habitat of Siberian crane in Poyang Lake?

Almost 95% of the entire population of the Siberian crane (Grus leucogeranus) winter in Poyang Lake, China, where they forage on the tubers of the submerged aquatic macrophyte Vallisneria spiralis. The Three Gorges Dam on the Yangtze River may possibly affect this food source of the Siberian crane by affecting the light intensity reaching the top of the V. spiralis canopy. In this study, the photosynthetically active radiation at the top of the V. spiralis canopy (PARtc) in Lake Dahuchi was modeled from 1998 to 2006, and the potential impacts of changes in water level and turbidity on the underwater light climate of V. spiralis were analyzed. PARtc was calculated from incident irradiance while the losses due to reflection at the water surface, absorption, and scattering within the water column were taken into consideration. The results indicated significant differences in PARtc between years. Six years of water level and Secchi disk depth records revealed a seasonal switching of the lake from a turbid state at low water levels in autumn, winter, and spring to a clear state at high water levels during the monsoon in summer. The highest PARtc occurred at intermediate water levels, which were reached when the Yangtze River forces Lake Dahuchi out of its turbid state in early summer and the water becomes clear. The intended operation of the Three Gorges Dam, which will increase water levels in May and June, may advance the moment when Lake Dahuchi switches from turbid to clear. We suggest that this might increase production of V. spiralis and possibly improve the food habitat conditions for wintering Siberian crane in Poyang Lake

Fireball Models for Flares in AE Aquarii

We examine the flaring behaviour of the cataclysmic variable AE~Aqr in the context of the `magnetic propeller' model for this system. The flares are thought to arise from collisions between high density regions in the material expelled from the system after interaction with the rapidly rotating magnetosphere of the white dwarf. We calculate the first quantitative models for the flaring and calculate the time-dependent emergent optical spectra from the resulting hot, expanding ball of gas. We compare the results under different assumptions to observations and derive values for the mass, lengthscale and temperature of the material involved in the flare. We see that the fits suggest that the secondary star in this system has Population II composition.Comment: 19 pages, 24 figure