A model-based approach for automatic recovery from memory leaks in enterprise applications

Large-scale distributed computing systems such as data centers are hosted on heterogeneous and networked servers that execute in a dynamic and uncertain operating environment, caused by factors such as time-varying user workload and various failures. Therefore, achieving stringent quality-of-service goals is a challenging task, requiring a comprehensive approach to performance control, fault diagnosis, and failure recovery. This work presents a model-based approach for fault management, which integrates limited lookahead control (LLC), diagnosis, and fault-tolerance concepts that: (1) enables systems to adapt to environment variations, (2) maintains the availability and reliability of the system, (3) facilitates system recovery from failures. We focused on memory leak errors in this thesis. A characterization function is designed to detect memory leaks. Then, a LLC is applied to enable the computing system to adapt efficiently to variations in the workload, and to enable the system recover from memory leaks and maintain functionality

Industrial development in Indonesia, development for whom?: A case study of women who work in factories in rural West Java

This research was conducted in order to address two major research questions: 1) To what extent and in what ways are a cohort of female factory workers in Sundanese West Java influential in the cultural, social and economic development of the geographic area in which they live and more specifically within their own households? 2) To what extent does the Indonesian state support or inhibit such development? In order to answer these and other secondary research questions I conducted qualitative and quantitative research. I used a theoretical framework which directed the methodology, questionnaires and both qualitative and quantitative data was collected whilst in the field in rural West Java. In this thesis I studied a cohort of female factory workers from rural West Java. The research provides more accurate data on the household status and position of young women involved in the industrialisation process in West Java and provides a better understanding of the outcomes and problems of this same process on a regional and national level. 323 women were included in the study, as were their families, during eight months fieldwork carried out in 1996/97 in Banjaran, West Java. This region is undergoing rapid industrial development and as a result is absorbing tens of thousands of young women from traditional lifestyles into factory employment. This transition has significant implications for the status of women in the region, and in Indonesia in general. The measurement of the impacts of industrial capitalism (positive and negative) upon the household, village, regional and national status of such women is the most important way in which this research analyses the implications of factory employment upon women\u27s lives. I argue that Sundanese factory women are extremely important to their household and nation and without their loyalty to both, industrial development would not be successful in contemporary Indonesia. However, Indonesian factory women are heavily inhibited by a repressive and corrupt state. I have argued in this thesis that, more than any other factor (globalisation, modernisation, capitalism), the state in Indonesia is the most inhibitive phenomenon interfering with factory women\u27s ability to share in the benefits of development and at the same time forge a new and improved status for themselves and others. More specifically, the state in Indonesia is structurally organised within strict and traditionally-oriented patriarchal parameters. The failure of this patriarchy to protect its own female factory workers, while at the same time making huge profits from their hard work, is at the centre of discussion within this thesis. It is ironic that this same state (patriarchy) demands the loyalty, discipline and respect of Indonesian women and places the responsibility for the successful development of Indonesian society and economy fairly on their shoulders. However, at the same time, state elites benefit enormously from factory women and women in general, yet provide them no protection and allow only a few to honestly share in the benefits of development. The position of Sundanese factory women vis-a-vis the state and industrial capitalism is discussed with the aid of major development theories, original research and data from similar studies to cement clearly in the minds of the readers the notion that, more than any other factor, the Indonesian state is failing most Indonesian people and specifically failing Indonesian factory women. In this thesis, the status and position of factory women act as delicate indicators of the levels of social justice and injustice in Indonesia and the extent to which major groups in Indonesian society are excluded from sharing fully in the benefits of development

Governing sustainable corridor development:Case studies of Gilimanuk - Denpasar - Padangbai and Yogyakarta - Solo - Semarang Corridors

In 2015, the Government of Indonesia initiated the Strategic Development Regions Corridors, departing from the traditional corridor approach to a holistic perspective, as the corridors incorporate environmental preservation and socio-cultural considerations alongside economic interests. This poses challenges, since the traditional corridor approach often places environmental and socio-cultural concerns on passenger seats. Also, corridor projects claiming to be sustainable may not truly uphold their sustainability claims, without the balance between environmental, social, and economic dimensions. For this, the involvement of multiple stakeholders with sustainability knowledge and implementation capacities are needed. At the same time, actors have their perceptions, agendas, and strategies influencing the decision-making process that can either promote or hinder sustainability. This makes governance crucial for positioning actors with specific roles and responsibilities in the decision-making process to reach joint sustainability actions. This research delves into the governance of Gilimanuk-Denpasar-Padangbai and Yogyakarta-Solo-Semarang Corridors – exploring how it guides and directs actors’ behaviors. To do so, a conceptual framework was developed using regional development, corridor development, sustainable development, and governance theories to generate concepts of governance factors and interaction process that can steer a corridor development into sustainable direction. The findings revealed a shift from an initial economic focus to a broader consideration of sustainability. The corridors’ early sustainability vision, complemented by process management and process design allowed the inclusion and facilitation of sustainability actors with local, tacit, and codified knowledge. Nevertheless, limitations persisted due to the initial economic-focused top-down approach, resulting in economic-focused delineations and constrained soft-infrastructure programs in both corridors.<br/

HPCCP/CAS Workshop Proceedings 1998

This publication is a collection of extended abstracts of presentations given at the HPCCP/CAS (High Performance Computing and Communications Program/Computational Aerosciences Project) Workshop held on August 24-26, 1998, at NASA Ames Research Center, Moffett Field, California. The objective of the Workshop was to bring together the aerospace high performance computing community, consisting of airframe and propulsion companies, independent software vendors, university researchers, and government scientists and engineers. The Workshop was sponsored by the HPCCP Office at NASA Ames Research Center. The Workshop consisted of over 40 presentations, including an overview of NASA's High Performance Computing and Communications Program and the Computational Aerosciences Project; ten sessions of papers representative of the high performance computing research conducted within the Program by the aerospace industry, academia, NASA, and other government laboratories; two panel sessions; and a special presentation by Mr. James Bailey

Net.Sense

Net.sense will server as a proof-of-concept of a new type of network management system, using biological models and statistical principles to address scalability, predictability, and reliability issues associated with managing the highly complex computer systems that we as a society have come to depend on

Intelligent Load Balancing in Cloud Computer Systems

Cloud computing is an established technology allowing users to share resources on a large scale, never before seen in IT history. A cloud system connects multiple individual servers in order to process related tasks in several environments at the same time. Clouds are typically more cost-effective than single computers of comparable computing performance. The sheer physical size of the system itself means that thousands of machines may be involved. The focus of this research was to design a strategy to dynamically allocate tasks without overloading Cloud nodes which would result in system stability being maintained at minimum cost. This research has added the following new contributions to the state of knowledge: (i) a novel taxonomy and categorisation of three classes of schedulers, namely OS-level, Cluster and Big Data, which highlight their unique evolution and underline their different objectives; (ii) an abstract model of cloud resources utilisation is specified, including multiple types of resources and consideration of task migration costs; (iii) a virtual machine live migration was experimented with in order to create a formula which estimates the network traffic generated by this process; (iv) a high-fidelity Cloud workload simulator, based on a month-long workload traces from Google's computing cells, was created; (v) two possible approaches to resource management were proposed and examined in the practical part of the manuscript: the centralised metaheuristic load balancer and the decentralised agent-based system. The project involved extensive experiments run on the University of Westminster HPC cluster, and the promising results are presented together with detailed discussions and a conclusion

From biopiracy to bioprospecting: an historical sociology of the search for biological resources

With the 1992 United Nations Convention on Biological Diversity humanity's ongoing search for biological resources became subject to global regulation. The collection of biological materials for use in agriculture and medicine by one nation from another became conditional on criteria of informed consent, benefit-sharing, and the preservation of environments. This practice has become known as bioprospecting. Collections of biological materials and/or of 'traditional' knowledge of how to utilize them which did not meet the Convention's requirements henceforth became known as biopiracy. The thesis takes its structure from the Convention, which is treated as marking a shift from historical biopiracy to contemporary bioprospecting.. The thesis is that critics of the Convention who oppose it and the forms of bioprospecting which it mandates in terms of neo-colonialism and neo-imperialism have misunderstood the character of contemporary economic and political power. The thesis argues that although contemporary bioprospecting is not practiced, as the Convention requires it to be, in ways that are 'fair and equitable', it cannot be understood as a neo-imperialist practice. Instead, the thesis concludes that the Convention should be understood in the context of new forms of governance and sovereignty. The Convention facilitates planet management and supports the exercise of biopower. Several cases studies of imperialist biopiracy are presented and their social impacts are discussed in contrast to contemporary bioprospecting. A broad range of historical and sociological literature is brought together for the first time. The history of the transition from biopiracy to bioprospecting is described and discussed in terms of several social, epistemological/technological, scientific, political and economic changes, respectively: the transition from imperialism to globalization, a shift away from exploitation of 'nature' toward management of 'biodiversity', the transition from natural history to ecological science, the appearance of environmentalist concerns in national and global politics, the completion of the globalization of capitalist property relations and the demise of the notion of biological resources as the 'common heritage of humankind'

μGIM - Microgrid intelligent management system based on a multi-agent approach and the active participation of end-users

[ES] Los sistemas de potencia y energía están cambiando su paradigma tradicional, de sistemas centralizados a sistemas descentralizados. La aparición de redes inteligentes permite la integración de recursos energéticos descentralizados y promueve la gestión inclusiva que involucra a los usuarios finales, impulsada por la gestión del lado de la demanda, la energía transactiva y la respuesta a la demanda. Garantizar la escalabilidad y la estabilidad del servicio proporcionado por la red, en este nuevo paradigma de redes inteligentes, es más difícil porque no hay una única sala de operaciones centralizada donde se tomen todas las decisiones. Para implementar con éxito redes inteligentes, es necesario combinar esfuerzos entre la ingeniería eléctrica y la ingeniería informática. La ingeniería eléctrica debe garantizar el correcto funcionamiento físico de las redes inteligentes y de sus componentes, estableciendo las bases para un adecuado monitoreo, control, gestión, y métodos de operación. La ingeniería informática desempeña un papel importante al proporcionar los modelos y herramientas computacionales adecuados para administrar y operar la red inteligente y sus partes constituyentes, representando adecuadamente a todos los diferentes actores involucrados. Estos modelos deben considerar los objetivos individuales y comunes de los actores que proporcionan las bases para garantizar interacciones competitivas y cooperativas capaces de satisfacer a los actores individuales, así como cumplir con los requisitos comunes con respecto a la sostenibilidad técnica, ambiental y económica del Sistema. La naturaleza distribuida de las redes inteligentes permite, incentiva y beneficia enormemente la participación activa de los usuarios finales, desde actores grandes hasta actores más pequeños, como los consumidores residenciales. Uno de los principales problemas en la planificación y operación de redes eléctricas es la variación de la demanda de energía, que a menudo se duplica más que durante las horas pico en comparación con la demanda fuera de pico. Tradicionalmente, esta variación dio como resultado la construcción de plantas de generación de energía y grandes inversiones en líneas de red y subestaciones. El uso masivo de fuentes de energía renovables implica mayor volatilidad en lo relativo a la generación, lo que hace que sea más difícil equilibrar el consumo y la generación. La participación de los actores de la red inteligente, habilitada por la energía transactiva y la respuesta a la demanda, puede proporcionar flexibilidad en desde el punto de vista de la demanda, facilitando la operación del sistema y haciendo frente a la creciente participación de las energías renovables. En el ámbito de las redes inteligentes, es posible construir y operar redes más pequeñas, llamadas microrredes. Esas son redes geográficamente limitadas con gestión y operación local. Pueden verse como áreas geográficas restringidas para las cuales la red eléctrica generalmente opera físicamente conectada a la red principal, pero también puede operar en modo isla, lo que proporciona independencia de la red principal. Esta investigación de doctorado, realizada bajo el Programa de Doctorado en Ingeniería Informática de la Universidad de Salamanca, aborda el estudio y el análisis de la gestión de microrredes, considerando la participación activa de los usuarios finales y la gestión energética de lascarga eléctrica y los recursos energéticos de los usuarios finales. En este trabajo de investigación se ha analizado el uso de conceptos de ingeniería informática, particularmente del campo de la inteligencia artificial, para apoyar la gestión de las microrredes, proponiendo un sistema de gestión inteligente de microrredes (μGIM) basado en un enfoque de múltiples agentes y en la participación activa de usuarios. Esta solución se compone de tres sistemas que combinan hardware y software: el emulador de virtual a realidad (V2R), el enchufe inteligente de conciencia ambiental de Internet de las cosas (EnAPlug), y la computadora de placa única para energía basada en el agente (S4E) para permitir la gestión del lado de la demanda y la energía transactiva. Estos sistemas fueron concebidos, desarrollados y probados para permitir la validación de metodologías de gestión de microrredes, es decir, para la participación de los usuarios finales y para la optimización inteligente de los recursos. Este documento presenta todos los principales modelos y resultados obtenidos durante esta investigación de doctorado, con respecto a análisis de vanguardia, concepción de sistemas, desarrollo de sistemas, resultados de experimentación y descubrimientos principales. Los sistemas se han evaluado en escenarios reales, desde laboratorios hasta sitios piloto. En total, se han publicado veinte artículos científicos, de los cuales nueve se han hecho en revistas especializadas. Esta investigación de doctorado realizó contribuciones a dos proyectos H2020 (DOMINOES y DREAM-GO), dos proyectos ITEA (M2MGrids y SPEAR), tres proyectos portugueses (SIMOCE, NetEffiCity y AVIGAE) y un proyecto con financiación en cascada H2020 (Eco-Rural -IoT)

Choreographing the extended agent : performance graphics for dance theater

Thesis (Ph. D.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2005.Includes bibliographical references (v. 2, leaves 448-458).The marriage of dance and interactive image has been a persistent dream over the past decades, but reality has fallen far short of potential for both technical and conceptual reasons. This thesis proposes a new approach to the problem and lays out the theoretical, technical and aesthetic framework for the innovative art form of digitally augmented human movement. I will use as example works a series of installations, digital projections and compositions each of which contains a choreographic component - either through collaboration with a choreographer directly or by the creation of artworks that automatically organize and understand purely virtual movement. These works lead up to two unprecedented collaborations with two of the greatest choreographers working today; new pieces that combine dance and interactive projected light using real-time motion capture live on stage. The existing field of"dance technology" is one with many problems. This is a domain with many practitioners, few techniques and almost no theory; a field that is generating "experimental" productions with every passing week, has literally hundreds of citable pieces and no canonical works; a field that is oddly disconnected from modern dance's history, pulled between the practical realities of the body and those of computer art, and has no influence on the prevailing digital art paradigms that it consumes.(cont.) This thesis will seek to address each of these problems: by providing techniques and a basis for "practical theory"; by building artworks with resources and people that have never previously been brought together, in theaters and in front of audiences previously inaccessible to the field; and by proving through demonstration that a profitable and important dialogue between digital art and the pioneers of modern dance can in fact occur. The methodological perspective of this thesis is that of biologically inspired, agent-based artificial intelligence, taken to a high degree of technical depth. The representations, algorithms and techniques behind such agent architectures are extended and pushed into new territory for both interactive art and artificial intelligence. In particular, this thesis ill focus on the control structures and the rendering of the extended agents' bodies, the tools for creating complex agent-based artworks in intense collaborative situations, and the creation of agent structures that can span live image and interactive sound production. Each of these parts becomes an element of what it means to "choreograph" an extended agent for live performance.Marc Downie.Ph.D

From biopiracy to bioprospecting : an historical sociology of the search for biological resources

With the 1992 United Nations Convention on Biological Diversity humanity's ongoing search for biological resources became subject to global regulation. The collection of biological materials for use in agriculture and medicine by one nation from another became conditional on criteria of informed consent, benefit-sharing, and the preservation of environments. This practice has become known as bioprospecting. Collections of biological materials and/or of 'traditional' knowledge of how to utilize them which did not meet the Convention's requirements henceforth became known as biopiracy. The thesis takes its structure from the Convention, which is treated as marking a shift from historical biopiracy to contemporary bioprospecting. The thesis is that critics of the Convention who oppose it and the forms of bioprospecting which it mandates in terms of neo-colonialism and neo-imperialism have misunderstood the character of contemporary economic and political power. The thesis argues that although contemporary bioprospecting is not practiced, as the Convention requires it to be, in ways that are 'fair and equitable', it cannot be understood as a neo-imperialist practice. Instead, the thesis concludes that the Convention should be understood in the context of new forms of governance and sovereignty. The Convention facilitates planet management and supports the exercise of biopower. Several cases studies of imperialist biopiracy are presented and their social impacts are discussed in contrast to contemporary bioprospecting. A broad range of historical and sociological literature is brought together for the first time. The history of the transition from biopiracy to bioprospecting is described and discussed in terms of several social, epistemological/technological, scientific, political and economic changes, respectively: the transition from imperialism to globalization, a shift away from exploitation of 'nature' toward management of 'biodiversity', the transition from natural history to ecological science, the appearance of environmentalist concerns in national and global politics, the completion of the globalization of capitalist property relations and the demise of the notion of biological resources as the 'common heritage of humankind'.EThOS - Electronic Theses Online ServiceEconomic and Social Research Council (Great Britain) (ESRC)GBUnited Kingdo