An analytic technique for statistically modeling random atomic clock errors in estimation

Minimum variance estimation requires that the statistics of random observation errors be modeled properly. If measurements are derived through the use of atomic frequency standards, then one source of error affecting the observable is random fluctuation in frequency. This is the case, for example, with range and integrated Doppler measurements from satellites of the Global Positioning and baseline determination for geodynamic applications. An analytic method is presented which approximates the statistics of this random process. The procedure starts with a model of the Allan variance for a particular oscillator and develops the statistics of range and integrated Doppler measurements. A series of five first order Markov processes is used to approximate the power spectral density obtained from the Allan variance

Construction of Parseval wavelets from redundant filter systems

We consider wavelets in L^2(R^d) which have generalized multiresolutions. This means that the initial resolution subspace V_0 in L^2(R^d) is not singly generated. As a result, the representation of the integer lattice Z^d restricted to V_0 has a nontrivial multiplicity function. We show how the corresponding analysis and synthesis for these wavelets can be understood in terms of unitary-matrix-valued functions on a torus acting on a certain vector bundle. Specifically, we show how the wavelet functions on R^d can be constructed directly from the generalized wavelet filters.Comment: 34 pages, AMS-LaTeX ("amsproc" document class) v2 changes minor typos in Sections 1 and 4, v3 adds a number of references on GMRA theory and wavelet multiplicity analysis; v4 adds material on pages 2, 3, 5 and 10, and two more reference

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

Language processing within the human medial temporal lobe

Although the hippocampal formation is essential for verbal memory, it is not fully understood how it contributes to language comprehension. We recorded event-related potentials (ERPs) directly from two substructures of the medial temporal lobe (MTL), the rhinal cortex and the hippocampus proper, while epilepsy patients listened to sentences that either were correct or contained semantic or syntactic violations. Semantic violations elicited a large negative ERP response peaking at approximately 400 ms in the rhinal cortex. In contrast, syntactically incorrect sentences elicited a negative deflection of 500-800 ms in the hippocampus proper. The results suggest that functionally distinct aspects of integration in language comprehension are supported by different MTL structures: the rhinal cortex is involved in semantic integration, whereas the hippocampus proper subserves processes of syntactic integration. An analysis of phase synchronization within the gamma band between rhinal and hippocampal recording sites showed that both of the above-mentioned ERP components were preceded by an increase of phase synchronization. In contrast to these short phasic increases of phase synchronization in both violation conditions, correct sentences were associated with a long-lasting synchronization in a late time window, possibly reflecting the integration of semantic and syntactic information as required for normal comprehension

'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

Scale-invariance of human EEG signals in sleep

We investigate the dynamical properties of electroencephalogram (EEG) signals of human in sleep. By using a modified random walk method, We demonstrate that the scale-invariance is embedded in EEG signals after a detrending procedure. Further more, we study the dynamical evolution of probability density function (PDF) of the detrended EEG signals by nonextensive statistical modeling. It displays scale-independent property, which is markedly different from the turbulent-like scale-dependent PDF evolution.Comment: 4 pages and 6 figure

A systematic review and metaethnography to identify how effective, cost-effective, accessible and acceptable self-management support interventions are for men with long-term conditions (SELF-MAN)

Review methods: In the quantitative review, data on relevant outcomes, patient populations, intervention type and study quality were extracted. Quality appraisal was conducted independently by two reviewers using the Cochrane risk of bias tool. Meta-analysis was conducted to compare the effects of interventions in male, female and mixed-sex groups. In the metaethnography, study details, participant quotes (first-order constructs) and study authors’ themes/concepts (second-order constructs) were extracted. Quality appraisal was conducted independently by two reviewers using the Critical Appraisal Skills Programme tool. Data were synthesised according to a metaethnography approach. Third-order interpretations/constructs were derived from the extracted data and integrated to generate a ‘line-of-argument’ synthesis. Results: Forty RCTs of self-management support interventions in male-only samples, and 20 RCTs where an analysis by gender was reported, were included in the quantitative review. Meta-analysis suggested that interventions including physical activity, education and peer support have a positive impact on quality of life in men, and that men may derive more benefit than women from them, but there is currently insufficient evidence to draw definitive conclusions. Thirty-eight qualitative studies relevant to men’s experiences of, and perceptions of, self-management support were included in the qualitative review. The metaethnography identified four concepts: (1) need for purpose; (2) trusted environments; (3) value of peers; and (4) becoming an expert. Findings indicated that men may feel less comfortable engaging in support if it is perceived to be incongruous with valued aspects of masculine identities. Men may find support interventions more attractive when they have a clear purpose, are action-oriented and offer practical strategies that can be integrated into daily life. Support delivered in an environment that offers a sense of shared understanding can be particularly appealing to some men. Conclusions: Health professionals and those involved in designing interventions may wish to consider whether or not certain components (e.g. physical activity, education, peer support) are particularly effective in men, although more research is needed to fully determine and explore this. Interventions are most likely to be accessible and acceptable to men when working with, not against, valued aspects of masculine identities

General Framework for phase synchronization through localized sets

We present an approach which enables to identify phase synchronization in coupled chaotic oscillators without having to explicitly measure the phase. We show that if one defines a typical event in one oscillator and then observes another one whenever this event occurs, these observations give rise to a localized set. Our result provides a general and easy way to identify PS, which can also be used to oscillators that possess multiple time scales. We illustrate our approach in networks of chemically coupled neurons. We show that clusters of phase synchronous neurons may emerge before the onset of phase synchronization in the whole network, producing a suitable environment for information exchanging. Furthermore, we show the relation between the localized sets and the amount of information that coupled chaotic oscillator can exchange