Political theory and social practices: G.A. Cohen, Rawls, Habermas and the problem of self-grounding

In a time of transitions, post-Rawlsian political philosophy is itself in transition, engaged in a methodological dispute regarding the relationship between political theory and changing social practices. This thesis enters this dispute through engaging with John Rawls’s philosophical project and the two leading but contrasting critiques of Rawls’s constructivist methodology. I first seek to rescue constructivism from G.A. Cohen’s critique of its fact-dependence, but secondly argue with Jürgen Habermas for a shift from constructivism to reconstructivism. Part I establishes a theoretical framework. I analyse competing paradigms of the relationship between normative principles and social practices and situate them in relation to the problem of self-grounding. This is the methodological problem of how, in accordance with a conception of freedom as autonomy, philosophy can find normative foundations within existing social practices. While Cohen rejects this problem in arguing for a choice between realism and utopianism, Rawls’s realistic utopianism and Habermas’s utopian realism are both driven by the problem of self-grounding. Part II defends Rawls’s constructivism against Cohen’s criticism of its restricted focus on the basic structure of society and fact-dependence. Part III analyses and critiques the development of Rawls’s project. It analyses Rawls’s concern with the problem of stability and critiques from a Habermasian perspective the approach to the problem of self-grounding this represents. Part IV argues that post-Rawlsian deliberative democrats who have sought to combine ideas from Rawls and Habermas also fail to adequately address this methodological problem. Part V engages with Habermas on his own terms. I first analyse Habermas’s reconstruction of the tension between facticity and validity in morality and politics. On this basis, I conclude that Habermas’s procedural reconstructivism allows him to more successfully address the problem of self-grounding than Rawls’s substantive constructivism, and assess the implications of this conclusion in theory and practice

The Effects Of Hypoxia And Freshwater Intrusion On The Eastern Oyster (Crassostrea Virginica)

Recent estimates revealed a significant decrease in oyster populations worldwide. This drastic decrease has detrimental effects on coastal and estuarine ecosystems. Two environmental stressors that are thought to be contributing to the oyster population decline are hypoxia and excess freshwater intrusion. In this study, effects of hypoxia and low salinity on oysters were investigated using a combination of laboratory and field-based methods. In the laboratory, oysters were exposed to 2, 4, or 8 days of hypoxia (\u3c 2 mg/L dissolved oxygen) folloby 6 days of recovery in normoxic conditions. At the same time, caged oysters were exposed to a naturally occurring hypoxic event in the field. After 8 days, laboratory-exposed oysters shoevidence of immunosuppression indicated by significant downregulation of the immune-related gene thymosin-β4 (Tβ-4) and a significant decrease in total circulating hemocytes compared to controls. However, in field oysters exposed to a naturally occurring hypoxic event, no effect on total hemocyte counts and an upregulation of Tβ-4 was observed. In a second field study, to investigate how oysters respond to prolonged freshwater exposure, caged oysters were placed on 23 April 2019 at six reef sites in the Mississippi Sound along with in situ water quality sensors. One-hundred percent mortality of caged oysters occurred at four of the six sites. Of the 6 six sites, Henderson Point Reef and Kittiwake Reef shosome caged oyster survival. At Henderson Point, where higher mortality was observed compared to Kittiwake, a significant increase in lipid peroxidation was detected. Analysis of mRNA expression of surviving caged and native oysters revealed downregulation of genes involved in immune function, low oxygen response, and osmoregulation. These results show possible evidence of energetic depression which inhibits adequate adaptation to low salinity conditions. Energetic depression and increased oxidative damage could have contributed to higher oyster mortality. Dredge sampling of native oysters at the all Mississippi Sound field sites on 27 September 2019, following recovery to ~15 ppt salinity, still indicated 100% native oyster mortality due to the prior prolonged freshwater exposure. Continued monitoring of western Mississippi Sound oyster reefs is crucial to observe recovery of oyster populations

Into the past : nationalism and heritage in the neoliberal age

This thesis examines the ideological nexus of nationalism and heritage under the social conditions of neoliberalism. The investigation aims to demonstrate how neoliberal economics stimulate the irrationalism manifest in nationalist idealisation of the past. The institutionalisation of national heritage was originally a rational function of the modern state, symbolic of its political and cultural authority. With neoliberal erosion of the productive economy and public institutions, heritage and nostalgia proliferate today in all areas of social life. It is argued that this represents a social pathology linked to the neoliberal state’s inability to construct a future-orientated national project. These conditions enhance the appeal of irrational nationalist and regionalist ideologies idealising the past as a source of cultural purity. Unable to achieve social cohesion, the neoliberal state promotes multiculturalism, encouraging minorities to embrace essentialist identity politics that parallel the nativism of right-wing nationalists and regionalists. This phenomenon is contextualised within the general crisis of progressive modernisation in Western societies that has accompanied neoliberalisation and globalisation. A new theory of activist heritage is advanced to describe autonomous, politicised heritage that appropriates forms and practices from the state heritage sector. Using this concept, the politics of irrational nationalism and regionalism are explored through fieldwork, including participant observation, interviews and photography. The interaction of state and activist heritage is considered at the Wewelsburg 1933-1945 Memorial Museum in Germany wherein neofascists have re-signified Nazi material culture, reactivating it within contemporary political narratives. The activist heritage of Israeli Zionism, Irish Republicanism and Ulster Loyalism is analysed through studies of museums, heritage centres, archaeological sites, exhibitions, monuments and historical re-enactments. These illustrate how activist heritage represents a political strategy within irrational ideologies that interpret the past as the ethical model for the future. This work contends that irrational nationalism fundamentally challenges the Enlightenment’s assertion of reason over faith, and culture over nature, by superimposing pre-modern ideas upon the structure of modernity. An ideological product of the Enlightenment, the nation state remains the only political unit within which a rational command of time and space is possible, and thus the only viable basis for progressive modernity

“Be patient, dear mother … wait for me”: the neo-infirmity film, female illness and contemporary cinema

In social reality, illness and death occur in myriad ways, yet Hollywood films have historically preferred spectacular, violent death over realist depictions of the terminal stages of life. Yet an ever-growing number of popular films, which I term neo-infirmity films, incorporate episodes of women characters debilitated by illness or injury. Operating at the intersection of melodrama and realism, the scenes are instrumental in staging contemporary cinema's gender politics. I argue that women's deathbed and hospital-bed scenes in contemporary cinema validate anew the maternal role and the figure of the mother, transporting the woman-centered discursive space of melodrama into narrative terrain often hostile to women's presence. Through this relocation, the films emphasize her importance to sons in particular (and less often to daughters, husbands, and the larger family unit). Many such scenes simultaneously undermine women's agency, reducing mothers to principally symbolic, literally immobile roles. Ailing women can become catalysts for male psychological transformation occurring through grief, action, or both in combination. In all, such scenes speak to continued ambivalence surrounding women's representation in popular cinema, and to continued patrolling of the boundaries of female power. This essay compares selected texts from contemporary Hollywood cinema, alongside three parallel discourses that also deploy melodramatic modes of articulation: nonfiction amateur video as relayed via television news programs, international art cinema, and US independent cinema. Arguing for homologies across multiple fields of textual production, I seek through this comparison to generate insights into the cultural work done by filmic representation

The Signature of Primordial Grain Growth in the Polarized Light of the AU Mic Debris Disk

We have used the Hubble Space Telescope/ACS coronagraph to make polarization maps of the AU Mic debris disk. The fractional linear polarization rises monotonically from about 0.05 to 0.4 between 20 and 80 AU. The polarization is perpendicular to the disk, indicating that the scattered light originates from micron sized grains in an optically thin disk. Disk models, which simultaneously fit the surface brightness and polarization, show that the inner disk (< 40-50 AU) is depleted of micron-sized dust by a factor of more than 300, which means that the disk is collision dominated. The grains have high maximum linear polarization and strong forward scattering. Spherical grains composed of conventional materials cannot reproduce these optical properties. A Mie/Maxwell-Garnett analysis implicates highly porous (91-94%) particles. In the inner Solar System, porous particles form in cometary dust, where the sublimation of ices leaves a "bird's nest" of refractory organic and silicate material. In AU Mic, the grain porosity may be primordial, because the dust "birth ring" lies beyond the ice sublimation point. The observed porosities span the range of values implied by laboratory studies of particle coagulation by ballistic cluster-cluster aggregation. To avoid compactification, the upper size limit for the parent bodies is in the decimeter range, in agreement with theoretical predictions based on collisional lifetime arguments. Consequently, AU Mic may exhibit the signature of the primordial agglomeration process whereby interstellar grains first assembled to form macroscopic objects.Comment: 12 pages, 8 figures, ApJ, in pres

Combined and Independent Effects On Hypoxia and Tributylin On mRNA Expression and Physiology of the Eastern Oyster (\u3ci\u3eCrassostrea virginica\u3c/i\u3e)

Oyster reefs are vital to estuarine health, but they experience multiple stressors and globally declining populations. This study examined effects of hypoxia and tributyltin (TBT) on adult Eastern oysters (Crassostrea virginica) exposed either in the laboratory or the field following a natural hypoxic event. In the laboratory, oysters were exposed to either hypoxia followed by a recovery period, or to hypoxia combined with TBT. mRNA expression of HIF1-α and Tβ-4 along with hemocyte counts, biomarkers of hypoxic stress and immune health, respectively, were measured. In field-deployed oysters, HIF1-α and Tβ-4 expression increased, while no effect on hemocytes was observed. In contrast, after 6 and 8 days of laboratory-based hypoxia exposure, both Tβ-4 expression and hemocyte counts declined. After 8 days of exposure to hypoxia + TBT, oysters substantially up-regulated HIF1-α and down-regulated Tβ-4, although hemocyte counts were unaffected. Results suggest that hypoxic exposure induces immunosuppression which could increase vulnerability to pathogens