On the Necessity of Accounting for Resiliency in SFC

International audienceWhen deploying network service function chains the focus is usually given on metrics such as the cost, the latency, or the energy and it is assumed that the underlying cloud infrastructure provides resiliency mechanisms to handle with the disruptions occurring in the physical infrastructure. In this position paper, we advocate that while usual performance metrics are essential to decide on the deployment of network service function chains, the notion of resiliency should not be neglected as the choice of virtual-to-physical placement may dramatically improve the ability of the service chains to handle with failures of the infrastructure without requiring complex resiliency mechanisms

Management And Security Of Multi-Cloud Applications

Single cloud management platform technology has reached maturity and is quite successful in information technology applications. Enterprises and application service providers are increasingly adopting a multi-cloud strategy to reduce the risk of cloud service provider lock-in and cloud blackouts and, at the same time, get the benefits like competitive pricing, the flexibility of resource provisioning and better points of presence. Another class of applications that are getting cloud service providers increasingly interested in is the carriers\u27 virtualized network services. However, virtualized carrier services require high levels of availability and performance and impose stringent requirements on cloud services. They necessitate the use of multi-cloud management and innovative techniques for placement and performance management. We consider two classes of distributed applications – the virtual network services and the next generation of healthcare – that would benefit immensely from deployment over multiple clouds. This thesis deals with the design and development of new processes and algorithms to enable these classes of applications. We have evolved a method for optimization of multi-cloud platforms that will pave the way for obtaining optimized placement for both classes of services. The approach that we have followed for placement itself is predictive cost optimized latency controlled virtual resource placement for both types of applications. To improve the availability of virtual network services, we have made innovative use of the machine and deep learning for developing a framework for fault detection and localization. Finally, to secure patient data flowing through the wide expanse of sensors, cloud hierarchy, virtualized network, and visualization domain, we have evolved hierarchical autoencoder models for data in motion between the IoT domain and the multi-cloud domain and within the multi-cloud hierarchy

Failure Analysis in Next-Generation Critical Cellular Communication Infrastructures

The advent of communication technologies marks a transformative phase in critical infrastructure construction, where the meticulous analysis of failures becomes paramount in achieving the fundamental objectives of continuity, security, and availability. This survey enriches the discourse on failures, failure analysis, and countermeasures in the context of the next-generation critical communication infrastructures. Through an exhaustive examination of existing literature, we discern and categorize prominent research orientations with focuses on, namely resource depletion, security vulnerabilities, and system availability concerns. We also analyze constructive countermeasures tailored to address identified failure scenarios and their prevention. Furthermore, the survey emphasizes the imperative for standardization in addressing failures related to Artificial Intelligence (AI) within the ambit of the sixth-generation (6G) networks, accounting for the forward-looking perspective for the envisioned intelligence of 6G network architecture. By identifying new challenges and delineating future research directions, this survey can help guide stakeholders toward unexplored territories, fostering innovation and resilience in critical communication infrastructure development and failure prevention

Public Debt, Inequality and Power. The Making of a Modern Debt State

capital distribution economic policy interest ownership power public debt spending state subsidies tax United States[This book is distributed under the terms of the Creative Commons Attribution + Noncommercial + NoDerivatives 3.0 license. Copyright is retained by the author(s)] FROM THE BACK COVER: Who are the dominant owners of US public debt? Is it widely held, or concentrated in the hands of a few? Does ownership of public debt give these bondholders power over our government? What do we make of the fact that foreign-owned debt has ballooned to nearly 50 percent today? Until now, we have not had any satisfactory answers to these questions. Public Debt, Inequality, and Power is the first comprehensive historical analysis of public debt ownership in the United States. It reveals that ownership of federal bonds has been increasingly concentrated in the hands of the 1 percent over the past three decades. Based on extensive and original research, Public Debt, Inequality, and Power will shock and enlighten. “These days, the topic of America’s debt stirs heated political debate. But one of the most important facts in this discussion has hitherto been obscured: who actually owns that debt inside America? Hager has done some fascinating and pathbreaking research to answer that question and concluded that the ownership pattern is surprisingly concentrated—and unequal—and that this may have implications for how the entire debt debate develops in the coming years. This is an illuminating work that deserves wide attention.” (GILLIAN TETT, Financial Times) “The relationship between the ownership structure of government debt and economic inequality—between public finance and the class structure of modern capitalism—is one of several central concerns of political economy that has been almost completely neglected in recent decades. Sandy Brian Hager’s book returns to the subject with theoretical and empirical bravado.” (WOLFGANG STREECK, Director Emeritus, Max Planck Institute for the Study of Societies) “Money is power, and US Treasury debt is the world’s single largest financial instrument. Hager’s insightful book fills an enormous hole in our knowledge of who owns this debt and how the power flowing from that increasingly concentrated ownership affects US and global politics.” (HERMAN M. SCHWARTZ, author of Subprime Nation: American Power, Global Capital, and the Housing Bubble) *** SANDY BRIAN HAGER is Postdoctoral Fellow at the Weatherhead Center for International Affairs at Harvard University. He has published in various journals, including New Political Economy and Socio-Economic Review

Public Debt, Inequality, and Power: The Making of a Modern Debt State

Who are the dominant owners of US public debt? Is it widely held, or concentrated in the hands of a few? Does ownership of public debt give these bondholders power over our government? What do we make of the fact that foreign-owned debt has ballooned to nearly 50 percent today? Until now, we have not had any satisfactory answers to these questions. Public Debt, Inequality, and Power is the first comprehensive historical analysis of public debt ownership in the United States. It reveals that ownership of federal bonds has been increasingly concentrated in the hands of the 1 percent over the past three decades. Based on extensive and original research, Public Debt, Inequality, and Power will shock and enlighten

Next generation control of transport networks

It is widely understood by telecom operators and industry analysts that bandwidth demand is increasing dramatically, year on year, with typical growth figures of 50% for Internet-based traffic [5]. This trend means that the consumers will have both a wide variety of devices attaching to their networks and a range of high bandwidth service requirements. The corresponding impact is the effect on the traffic engineered network (often referred to as the “transport network”) to ensure that the current rate of growth of network traffic is supported and meets predicted future demands. As traffic demands increase and newer services continuously arise, novel network elements are needed to provide more flexibility, scalability, resilience, and adaptability to today’s transport network. The transport network provides transparent traffic engineered communication of user, application, and device traffic between attached clients (software and hardware) and establishing and maintaining point-to-point or point-to-multipoint connections. The research documented in this thesis was based on three initial research questions posed while performing research at British Telecom research labs and investigating control of transport networks of future transport networks: 1. How can we meet Internet bandwidth growth yet minimise network costs? 2. Which enabling network technologies might be leveraged to control network layers and functions cooperatively, instead of separated network layer and technology control? 3. Is it possible to utilise both centralised and distributed control mechanisms for automation and traffic optimisation? This thesis aims to provide the classification, motivation, invention, and evolution of a next generation control framework for transport networks, and special consideration of delivering broadcast video traffic to UK subscribers. The document outlines pertinent telecoms technology and current art, how requirements I gathered, and research I conducted, and by which the transport control framework functional components are identified and selected, and by which method the architecture was implemented and applied to key research projects requiring next generation control capabilities, both at British Telecom and the wider research community. Finally, in the closing chapters, the thesis outlines the next steps for ongoing research and development of the transport network framework and key areas for further study

Public Debt, Inequality, and Power: The Making of a Modern Debt State

Who are the dominant owners of US public debt? Is it widely held, or concentrated in the hands of a few? Does ownership of public debt give these bondholders power over our government? What do we make of the fact that foreign-owned debt has ballooned to nearly 50 percent today? Until now, we have not had any satisfactory answers to these questions. Public Debt, Inequality, and Power is the first comprehensive historical analysis of public debt ownership in the United States. It reveals that ownership of federal bonds has been increasingly concentrated in the hands of the 1 percent over the past three decades. Based on extensive and original research, Public Debt, Inequality, and Power will shock and enlighten

A farmers' market in a food desert : evaluating walkability and streetscape as factors of farmers' market effectiveness in food accessibility : the case of Farmers' Market East in Austin, Texas

textFood deserts are defined by absence of large grocery stores to access affordable food that constitute a healthy diet resulting in high levels of obesity, diabetes and cardiovascular diseases in the community. Farmers' markets have resulted as an approach to improving food accessibility in food deserts, however the lack of public transportation, incomplete sidewalks, and dilapidated streetscape in many American neighborhoods, can really affect farmers markets' usage. To answer this question, this research uses the Sustainable Food Center (SFC) Farmers Market East Austin as a case study area to investigate how built environment around the market affect its usage.Community and Regional Plannin

Source Rock Overpressure Prediction and Its Relation to Kerogen Maturity

Accurate formation pressure estimation is important to drilling and production operations and necessary for reservoir engineering calculations. Methods developed to estimate formation pressure from well logs are reliable for conventional reservoirs but do not translate well to unconventionals. Due to a limited hydraulic connectivity between the organic matter (kerogen) pore network and the inorganic matrix pore network holding the stored hydrocarbons, current methods may not accurately estimate the magnitude of overpressure in source rocks and unconventional targets in mature basins. In this work, a pressure estimation method is developed mainly using data from porosity logs. The proposed method is applied to areas in the Delaware Basin to demonstrate the presence of overpressure in the Bone Spring Sands and Wolfcamp formation. Validation pressure measurements based on DST, flowback, and managed pressure drilling data through multiple horizons indicate the weak transport coupling of the 3rd Bone Spring Sands and Wolfcamp horizons while also demonstrating a reliable method to estimate formation pressures using sonic well logs. The estimated overpressures in the Delaware Basin demonstrate a strong correlation with previously measured kerogen maturity and indicate that hydrocarbon generation is the significant source of the recognized present day overpressure