Liouville action and Weil-Petersson metric on deformation spaces, global Kleinian reciprocity and holography

We rigorously define the Liouville action functional for finitely generated, purely loxodromic quasi-Fuchsian group using homology and cohomology double complexes naturally associated with the group action. We prove that the classical action - the critical point of the Liouville action functional, considered as a function on the quasi-Fuchsian deformation space, is an antiderivative of a 1-form given by the difference of Fuchsian and quasi-Fuchsian projective connections. This result can be considered as global quasi-Fuchsian reciprocity which implies McMullen's quasi-Fuchsian reciprocity. We prove that the classical action is a Kahler potential of the Weil-Petersson metric. We also prove that Liouville action functional satisfies holography principle, i.e., it is a regularized limit of the hyperbolic volume of a 3-manifold associated with a quasi-Fuchsian group. We generalize these results to a large class of Kleinian groups including finitely generated, purely loxodromic Schottky and quasi-Fuchsian groups and their free combinations.Comment: 60 pages, proof of the Lemma 5.1 corrected, references and section 5.3 adde

ES Implementations – A Model of Panoptical Empowerment

Enterprise Systems (ES) / Enterprise Resource Planning (ERP) systems implementations have been widely popular with organisations in the past century with revenues of 37.5 billion USD in 2008 (AMR, 2009). Empowerment of users is one of commonly cited benefits of ES usage. However, literature review suggests a paradoxical situation exists with the empowerment of users via the use of IT. Various researchers have attempted to address the panoptical control and empowerment controversy by attempting to explain the impact on managers and users. However, to ensure the success of ES implementation and use, it is idealistic to achieve an optimised balance for the organization to impose control on the use of IT i.e. Enterprise Systems and the empowerment benefits of IT. This study guided by the lens of panopticon control attempts to investigate the impact of empowerment and panoptical control on varying levels of users including management and the factors that assist in optimising both control and empowerment

Evaluating ERP Success Factors: Vendor’s Perspective

In the last decade, Enterprise Resource Planning (ERP) systems have been the most important technology adopted by organisations around the world. Successful implementation of these systems depends on many stakeholders, all of whom make a substantial contribution to the project. ERP success also depends on organisational, technological and environmental factors. However, to date, most of the ERP success studies have been focused on improvements and success factors from the consumers’ perspective. Since the vendors play a very important role in ERP implementation success, and are required to abide by stringent contract agreements and SLAs, this paper presents an exploratory study on ERP success factors from the vendors’ perspectives. It includes a review of literature on ERP systems success factors, findings of research accomplished via interviews with people involved in ERP implementations from a consulting organisation, analysis of findings, success factors identified from this research and issues for further research

The Impacts of Organizational Learning and Innovation on Enterprise Systems Benefits of Australian Organizations

Enterprise Systems (ES) or Enterprise Resource Planning (ERP) Systems have been widely adopted by organizations around the world with the global market revenue estimated by AMR Research (2009) at 37.5 billion US dollars in 2008 and is expected to continue growing. Given the huge investments made by organizations for their ES implementations, many organizations have found it difficult to realize all the benefits expected from their ES implementations. Organizational learning and organizational innovation are crucial factors that help organizations to further achieve ES benefits after implementation. However, literature review suggests there is a lack of research done to provide insight on what ES benefits are influenced by organizational learning and innovation. This study is guided by the Competing Value Framework (CVF) to explore the impacts of organizational learning and innovation on the ES benefits. It includes a review on literature for organizational learning and organizational innovation, findings and analysis of research accomplished by multi-case study of eight large Australian organizations

Service Oriented Architecture (SOA): Implications for Australian University Information Systems Curriculum

Service Oriented Architecture (SOA) is emerging as a popular approach and paradigm for organizations to gain competitive advantage via managing their software applications and IT infrastructure as a set of interacting services. As the SOA market value is posed to increase to 10.3USD billion (WinterGreen-Research, 2009) by 2015, it is crucial that IS schools in Australia are providing the relevant industries with competent IS professionals that possess the necessary skills and are capable of understanding the impacts/implications of SOA deployments in order for them to design and create services of value. This paper examines the organizational and technological impacts/implications on organizations and discusses the skills and knowledge required by SOA-IS professionals and compares these with the requirements with the Australian Computer Society’s (ACS) common body of knowledge created for accreditation of Australia university curricula

Quantum Liouville theory in the background field formalism I. Compact Riemann surfaces

Using Polyakov's functional integral approach with the Liouville action functional defined in \cite{ZT2} and \cite{LTT}, we formulate quantum Liouville theory on a compact Riemann surface X of genus g > 1. For the partition function and for the correlation functions with the stress-energy tensor components $$, we describe Feynman rules in the background field formalism by expanding corresponding functional integrals around a classical solution - the hyperbolic metric on X. Extending analysis in \cite{LT1,LT2,LT-Varenna,LT3}, we define the regularization scheme for any choice of global coordinate on X, and for Schottky and quasi-Fuchsian global coordinates we rigorously prove that one- and two-point correlation functions satisfy conformal Ward identities in all orders of the perturbation theory. Obtained results are interpreted in terms of complex geometry of the projective line bundle \cE_{c}=\lambda_{H}^{c/2} over the moduli space $\mathfrak{M}_{g}$, where c is the central charge and $\lambda_{H}$ is the Hodge line bundle, and provide Friedan-Shenker \cite{FS} complex geometry approach to CFT with the first non-trivial example besides rational models.Comment: 67 pages, 4 figures (Typos corrected as in the published version

Hepatitis E Virus Infection in Sheltered Homeless Persons, France

To determine the prevalence of hepatitis E virus (HEV) infection among sheltered homeless persons in Marseille, France, we retrospectively tested 490 such persons. A total of 11.6% had immunoglobulin (Ig) G and 2.5% had IgM against HEV; 1 person had HEV genotype 3f. Injection drug use was associated with IgG against HEV