L1-determined ideals in group algebras of exponential Lie groups

A locally compact group $G$ is said to be $\ast$-regular if the natural map \Psi:\Prim C^\ast(G)\to\Prim_{\ast} L^1(G) is a homeomorphism with respect to the Jacobson topologies on the primitive ideal spaces \Prim C^\ast(G) and \Prim_{\ast} L^1(G). In 1980 J. Boidol characterized the $\ast$-regular ones among all exponential Lie groups by a purely algebraic condition. In this article we introduce the notion of $L^1$-determined ideals in order to discuss the weaker property of primitive $\ast$-regularity. We give two sufficient criteria for closed ideals $I$ of $C^\ast(G)$ to be $L^1$-determined. Herefrom we deduce a strategy to prove that a given exponential Lie group is primitive $\ast$-regular. The author proved in his thesis that all exponential Lie groups of dimension $\le 7$ have this property. So far no counter-example is known. Here we discuss the example $G=B_5$, the only critical one in dimension $\le 5$

Women and Work in Contemporary Japan: Deconstructing the "Crisis" of the Gender Order

ABSTRACT The 1990s saw important developments in the employment practices of Japanese women as necessitated by economic recession. Japanese women are increasingly postponing their traditional roles of wife and mother in lieu of expanding education and employment opportunities, suggesting that we are approaching or witnessing a period of redefinition of the prevailing gender structure. This thesis offers a theoretical exposition of this “crisis” in the gender structure utilising Connell’s concept of “hegemonic masculinity” and Finnemore and Sikkink’s “norm life cycle model”. This thesis will be presented as follows: i) hegemonic masculinity will be applied to the Japanese context to argue for the centrality of masculinity defined through the corporation, and for its significance in an understanding of femininity; ii) discussion of the “feminisation” of part-time work in Japan will test whether a challenge to the gender order from within of this nature represents a profound redefinition of the hegemonic gender structure; and iii) discursive study of Japanese state legislation and policy will reveal government commitment to ensuring continuity in gender norm dynamics. The findings suggest that we are not witnessing a period of “crisis” or profound transformation in the gender structure for greater gender equality. The pervasiveness of gender norm ideology in Japan is such that once established these norms have maintained an internal momentum so that changes in the material sphere are constrained by these ideational structures and not vice versa. The current period is marked by cooptation of gender norm challenges by corporations and government in an effort to neutralise gender norm challenge.N/ADepartment of Government and International Relation

Robustness and Enhancement of Neural Synchronization by Activity-Dependent Coupling

We study the synchronization of two model neurons coupled through a synapse having an activity-dependent strength. Our synapse follows the rules of Spike-Timing Dependent Plasticity (STDP). We show that this plasticity of the coupling between neurons produces enlarged frequency locking zones and results in synchronization that is more rapid and much more robust against noise than classical synchronization arising from connections with constant strength. We also present a simple discrete map model that demonstrates the generality of the phenomenon.Comment: 4 pages, accepted for publication in PR

'The medical gaze and the watchful eye' : the treatment, prevention and epidemiology of venereal diseases in New South Wales c.1901 - 1925

From Federation in 1901 through the first three decades of the twentieth century there was a perceptible shift in modes of rule in New South Wales (NSW) related to the management of venereal diseases. At the beginning of the twentieth century a medicopenal approach was central. By 1925, persuasion and ‘responsibilisation’ were becoming important modes, and young people rather than ‘case-hardened prostitutes' were assessed as being a ‘venereal’ risk. Framing this period were three important legislative developments which informed, and were informed by, these shifts: the NSW Prisoners Detention Act 1909, the NSW Select Committee into the Prevalence of Venereal Diseases 1915 and the NSW Venereal Diseases Act 1918. At its core this thesis is concerned with examining shifting modes of rule. This thesis closely examines each. I suggest that these modes of rule can be viewed through the lens of biopolitics, and following Foucault, deploy the ‘medical gaze’ and the ‘watchful eye’ as constructs to examine the relationship between the government of self, government of others and government of the state. I use the medical gaze to describe not only the individual venereal patient attending a hospital and the body of the patient diagnosed with syphilis and/or gonorrhoea, but most importantly to describe the power relationship between the medical practitioner, the teaching hospital and the patient. I use the watchful eye in a more overarching way to suggest the suite of techniques and apparatus deployed by government to monitor and regulate the venereal body politic, both the populations perceived to be posing a venereal risk, and populations at risk of venereal infection. In relation to the venereal body and the venereal body politic, I analyse three fundamental aspects of the management of venereal diseases: treatment, prevention and epidemiology. Treatment: Over this period, treatment moved from lock institutions to outpatient clinics. Embodied in this change was a widespread institutional ambivalence towards treating venereal patients. I contend that treatment of venereal diseases was painful, prolonged and punitive precisely because of the moral sickness perceived to be at the iv heart of venereal infection. I track this ambivalence to a systemic fear of institutional ‘venerealisation’, which decreased perceptibly across the period. Closely analysing surviving patient records, I argue that in their conduct, venereal patients were often compliant, conscientious and responsible. Prevention: I argue that preventative approaches to venereal diseases became increasingly complex, and operated in three domains – preventative medicine (diagnosis, treatment and vaccination); public health prevention (notification, isolation and disinfection); and prevention education (social purity campaigns and sex hygiene). An emerging plethora of community-based organisations and campaigns began to shift the sites and practices of power. Epidemiology: I suggest that there was a shift from danger to risk in the conceptualisation of venereal diseases. This shift necessitated a focus on factors affecting populations, as opposed to factors affecting individuals. This in turn led to the deployment of various techniques to monitor the conduct of venereal populations. The NSW Venereal Diseases Act 1918 created two important new venereal categories: the ‘notified person’ and the ‘defaulter,’ both of which came to permeate renditions of venereal patients throughout the 20th century

Raft cultures

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/43237/1/11022_2004_Article_BF00918296.pd

Positive intergroup contact modulates fusiform gyrus activity to black and white faces.

In this study, we investigated the effect of intergroup contact on processing of own- and other-race faces using functional Magnetic Resonance Imaging (fMRI). Previous studies have shown a neural own-race effect with greater BOLD response to own race compared to other race faces. In our study, white participants completed a social-categorization task and an individuation task while viewing the faces of both black and white strangers after having answered questions about their previous experiences with black people. We found that positive contact modulated BOLD activity in the right fusiform gyrus (rFG) and left inferior occipital gyrus (lIOC), regions associated with face processing. Within these regions, higher positive contact was associated with higher activity when processing black, compared to white faces during the social categorisation task. We also found that in both regions a greater amount of individuating experience with black people was associated with greater activation for black vs. white faces in the individuation task. Quantity of contact, implicit racial bias and negatively valenced contact showed no effects. Our findings suggest that positive contact and individuating experience directly modulate processing of out-group faces in the visual cortex, and illustrate that contact quality rather than mere familiarity is an important factor in reducing the own race face effect

Polymer and Fock representations for a Scalar field

In loop quantum gravity, matter fields can have support only on the `polymer-like' excitations of quantum geometry, and their algebras of observables and Hilbert spaces of states can not refer to a classical, background geometry. Therefore, to adequately handle the matter sector, one has to address two issues already at the kinematic level. First, one has to construct the appropriate background independent operator algebras and Hilbert spaces. Second, to make contact with low energy physics, one has to relate this `polymer description' of matter fields to the standard Fock description in Minkowski space. While this task has been completed for gauge fields, important gaps remained in the treatment of scalar fields. The purpose of this letter is to fill these gaps.Comment: 13 pages, no figure

Cosmological perturbations on local systems

We study the effect of cosmological expansion on orbits--galactic, planetary, or atomic--subject to an inverse-square force law. We obtain the laws of motion for gravitational or electrical interactions from general relativity--in particular, we find the gravitational field of a mass distribution in an expanding universe by applying perturbation theory to the Robertson-Walker metric. Cosmological expansion induces an ($\ddot a/a) \vec r$ force where $a(t)$ is the cosmological scale factor. In a locally Newtonian framework, we show that the $(\ddot a/a) \vec r$ term represents the effect of a continuous distribution of cosmological material in Hubble flow, and that the total force on an object, due to the cosmological material plus the matter perturbation, can be represented as the negative gradient of a gravitational potential whose source is the material actually present. We also consider the effect on local dynamics of the cosmological constant. We calculate the perihelion precession of elliptical orbits due to the cosmological constant induced force, and work out a generalized virial relation applicable to gravitationally bound clusters.Comment: 10 page

Konzept zur Ermittlung und Beurteilung der Kohlenstoffspeicher urbaner Böden am Beispiel Berlins

Städte sind Hotspots anthropogener CO2-Emissionen. Sie besitzen daher eine besondere Verantwortung für die Umsetzung von Maßnahmen und Strategien zur Vermeidung von Treibhausgasemissionen. Ein systematisches Management der C-Speicher der Berliner Stadtnatur (Boden und Vegetation) fehlt bisher – trotz großen Potenzials. Übergeordnetes Ziel des Projektes ist es, den städtischen Klimaschutz über den Schutz und die Entwicklung der C-Speicher von Böden und grüner Infrastruktur (Vegetation) und damit die Aufnahme und Fixierung von atmosphärischem CO2 zu stärken. Das Forschungsprojekt NatKoS („natürliche Kohlenstoffspeicher“) erarbeitet von 2016–2019 eine belastbare Daten- und Bewertungsgrundlage für die Corg-Speicher der Böden und der Vegetation in Berlin. Die Heterogenität und Eigenheiten der urbanen Böden und die damit verbundenen Schwierigkeiten sind eine besondere Herausforderung bei der Konzipierung der Datenerhebung und Bodenbewertung. Das Konzept soll eine Differenzierung nach städtischen Nutzungsformen, ausgewählten Bodeneigenschaften sowie der Schutzwürdigkeit der Böden ermöglichen. Historische Analysen der Flächennutzung unterstützen zudem die Entwicklungsprognosen für die Corg-Speicher bei städtebaulichen Projekten oder sonstigen Flächennutzungsplanungen. Die Forschungsergebnisse besitzen daher eine große Planungsrelevanz für die Stadtentwicklung mit dem Ziel „klimaneutrales Berlin 2050“