This thesis is concerned with flows through cascades, i.e. periodic arrays of obstacles. Such geometries are relevant to a range of physical scenarios, chiefly the aerodynamics and aeroacoustics of turbomachinery flows. Despite the fact that turbomachinery is of paramount importance to a number of industries, many of the underlying mechanisms in cascade flows remain opaque. In order to clarify the function of different physical parameters, the author considers six separate problems. For example, he explores the significance of realistic blade geometries in predicting turbomachinery performance, and the possibility that porous blades can achieve noise reductions. In order to solve these challenging problems, the author deploys and indeed develops techniques from across the spectrum of complex analysis: the Wiener–Hopf method, Riemann–Hilbert problems, and the Schottky–Klein prime function all feature prominently. These sophisticated tools are then used to elucidate the underlying mathematical and physical structures present in cascade flows. The ensuing solutions greatly extend previous works and offer new avenues for future research. The results are not of simply academic value but are also useful for aircraft designers seeking to balance aeroacoustic and aerodynamic effects.
Based on 25 years of community development practice, six of which have been lived in South Africa, Peter Westoby’s ground-breaking monograph moves away from dominant normative accounts of community development to provide an appreciative and critical analysis of concrete examples of community development theory and practice. By examining community development stories as experienced on the ground, Westoby is able to show how the poor are organising themselves using various forms of community development as well as demonstrating how the state and non-state actors are attempting to organise, engage or accompany the poor through community development. The book also breaks new ground in theorising the practice of community development, drawing inductively from the stories analysed. The diversity of South African contexts and the proliferation of different kinds of community practice, make this a hugely difficult task. Despite this, Westoby argues it is one worth undertaking given the seriousness of the challenges facing the poor and progressive social change agents within South Africa. In this undertaking, Westoby draws upon a unique analytical framework to help illuminate current community development policy and programme challenges, along with practice dilemmas and wisdom.
This book proposes that community development has been increasingly influenced and co-opted by a modernist, soulless, rational philosophy - reducing it to a shallow technique for ‘solving community problems’. In contrast, this dialogical approach re-maps the ground of community development practice within a frame of ideas such as dialogue, hospitality and depth. For the first time community development practitioners are provided with an accessible understanding of dialogue and its relevance to their practice, exploring the contributions of internationally significant thinkers such as P. Freire, M. Buber, D. Bohm and H.G Gadamer, J. Derrida, G. Esteva and R. Sennett. What makes the book distinctive is that: first, it identifies a dialogical tradition of community development and considers how such a tradition shapes practice within contemporary contexts and concerns – economic, social, political, cultural and ecological. Second, the book contrasts such an approach with technical and instrumental approaches to development that fail to take complex systems seriously. Third, the approach links theory to practice through a combination of storytelling and theory-reflection – ensuring that readers are drawn into a practice-theory that they feel increasingly confident has been 'tried and tested' in the world over the past 25 years.
For 125 years, physicians have relied on Manson's Tropical Diseases for a comprehensive clinical overview of this complex and fast-changing field. The fully revised 24th Edition, Dr. Jeremy Farrar, along with an internationally recognized editorial team, global contributors, and expert authors, delivers the latest coverage on parasitic and infectious diseases from around the world. From the difficult to diagnose to the difficult to treat, this highly readable, award-winning reference prepares you to effectively handle whatever your patients may have contracted. - Covers all of tropical medicine in a comprehensive manner, general medicine in the tropics, and non-clinical issues regarding public health and ethics. - Serves as an indispensable resource for physicians who treat patients with tropical diseases and/or will be travelling to the tropics, or who are teaching others in this area. - Contains a new section on 21st Century Drivers of Tropical Medicine, with chapters covering Poverty and Inequality, Public Health in Settings of Conflict and Political Instability, Climate Change, and Medical Product Quality and Public Health. - Includes all-new chapters on Surgery in the Topics, Yellow Fever, Systemic Mycoses, and COVID-19. - Covers key topics such as drug resistance; emerging and reemerging infections such as Zika, Ebola, and Chikungunya; novel diagnostics such as PCR-based methods; point-of care-tests such as ultrasound; public health in settings of conflict and political instability; and much more. - Differentiates approaches for resource-rich and resource-poor areas. - Includes reader-friendly features such as highlighted key information, convenient boxes and tables, extensive cross-referencing, and clinical management diagrams.
Whether ERP software, office applications, open-source products or online games: In terms of its economic characteristics, software differs fundamentally from industrial goods or services. Based on the economic principles and rules of the software industry, the book reveals strategies and business models to software vendors that comprise cooperation, distribution, pricing and production and industrialization strategies, as well as software as a service and platform concepts. Further aspects including the outsourcing behavior of software vendors and users; providing business software as open source software; selecting software; and the value chains in the software industry are also addressed. Based on a number of expert meetings, it contains numerous case studies and new empirical findings. Target audience of the book are professionals and executives from the software, consulting and IT branches as well as students and scholars of business administration, computer science, business and industrial engineering.
A design guide to the detailing of exposed steelwork in buildings. Written specifically for architects, this guide offers technical guidance, general principles as well as examples of best practice.
This thesis is concerned with flows through cascades, i.e. periodic arrays of obstacles. Such geometries are relevant to a range of physical scenarios, chiefly the aerodynamics and aeroacoustics of turbomachinery flows. Despite the fact that turbomachinery is of paramount importance to a number of industries, many of the underlying mechanisms in cascade flows remain opaque. In order to clarify the function of different physical parameters, the author considers six separate problems. For example, he explores the significance of realistic blade geometries in predicting turbomachinery performance, and the possibility that porous blades can achieve noise reductions. In order to solve these challenging problems, the author deploys and indeed develops techniques from across the spectrum of complex analysis: the Wiener–Hopf method, Riemann–Hilbert problems, and the Schottky–Klein prime function all feature prominently. These sophisticated tools are then used to elucidate the underlying mathematical and physical structures present in cascade flows. The ensuing solutions greatly extend previous works and offer new avenues for future research. The results are not of simply academic value but are also useful for aircraft designers seeking to balance aeroacoustic and aerodynamic effects.
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