Information Security – Theory vs. Reality
Exploring the concept of fault attacks in hardware security, this lecture delves into the various techniques used to compromise systems through non-nominal and nominal channels, as well as the potential risks introduced by trojan horses in the IT supply chain. The discussion includes differential fa
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Cisco Systems Fault Managed Power Portfolio Overview
Cisco Systems offers an industry-leading Fault Managed Power (FMP) patent portfolio comprising 24 active assets across seven INPADOC families. The portfolio includes patents supporting fault-managed power systems, PoE deployments, DC power distribution, DC-DC conversion, and HVDC connectors. The FMP
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Overview of Distributed Systems: Characteristics, Classification, Computation, Communication, and Fault Models
Characterizing Distributed Systems: Multiple autonomous computers with CPUs, memory, storage, and I/O paths, interconnected geographically, shared state, global invariants. Classifying Distributed Systems: Based on synchrony, communication medium, fault models like crash and Byzantine failures. Comp
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Power System Fault Calculation and Protection Analysis
In this technical document, we delve into the calculation of fault current and fault apparent power in symmetrical three-phase short circuit scenarios within power systems. Through detailed equivalent circuit diagrams, reactance calculations, and per unit value derivations, the fault current and app
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Smart Photovoltaics: Enhancing Fault Detection and Positioning
Smart photovoltaics (PV) technology aims to improve fault detection and positioning in large-scale PV systems. By equipping PV modules with AMP devices, real-time monitoring of environmental conditions and system status is enabled. The proposed automated troubleshooting method enhances efficiency in
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Evolution of Mathematical Theories and Proof Systems
Development of mathematical theories such as model theory, proof theory, set theory, recursion theory, and computational complexity is discussed, starting from historical perspectives with Dedekind and Peano to Godel's theorems, recursion theory's golden age in the 1930s, and advancements in proof t
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Understanding Byzantine Fault Tolerance in Distributed Systems
Byzantine fault tolerance is crucial in ensuring the reliability of distributed systems, especially in the presence of malicious nodes. This concept deals with normal faults, crash faults, and the challenging Byzantine faults, where nodes can exhibit deceptive behaviors. The Byzantine Generals Probl
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Understanding Fault Diagnosis in Mechanical and Electrical Systems
Explore the essential methods and techniques for fault diagnosis in mechanical and electrical systems in industrial settings. Learn to identify different types of faults, utilize fault-finding aids, and rectify issues promptly to prevent future failures. Discover industry-recognized fault diagnosing
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Understanding the Theory of Firms: Neoclassical vs. Modern Approaches
The theory of firms is explored through the Neoclassical and Modern perspectives. Neoclassical theory focuses on profit maximization, while Modern theory delves into managerial, principal-agent, and transaction cost theories. The discussion covers criticisms of Neoclassical theory and the essential
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Doctrine of In Pari Delicto in Legal Context
The doctrine of in pari delicto (Latin for "in equal fault") dictates that when parties are equally at fault, the possessor's condition is considered better, meaning a person engaged in wrongdoing cannot sue another for the same act. Exceptions include the adverse interest and innocent insider excep
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Understanding the Legal Maxims In Pari Delicto and Expressum Facit Cessare Tacitum
In Pari Delicto Potior Est Condicio Possidentis is a Latin phrase meaning "in equal fault, better is the condition of the possessor." It signifies that when parties are equally at fault, the possessor has the advantage. Expressum facit cessare tacitum, another legal maxim, states that what is expres
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Customer Controlled SFI (CCSFI) Fault Raising Guide
This guide by British Telecommunications plc provides detailed instructions on raising a Customer Controlled Special Faults Investigation (CCSFI) fault. It covers topics such as Version Control, Best Practices for Knowledge Based Diagnostics (KBD) and CCSFI, logging in, and step-by-step guidance for
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Understanding Byzantine Fault Tolerance: A Comprehensive Overview
Byzantine Fault Tolerance (BFT) is a critical concept in computer science, addressing faults in distributed systems. This summary covers the types of faults (normal, crash, Byzantine), implications of Byzantine faults, Byzantine Generals Problem, impossibility results, and the complexity of solving
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Understanding Fault Tree Analysis for Failure Investigation
Fault Tree Analysis (FTA) is a method used to identify the root causes of failures, allowing for appropriate corrective actions to be taken. It involves creating a visual diagram to determine the primary cause of an issue and its contributing factors. FTA helps enhance communication between users an
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Guide to Raising a Fault with British Telecommunications plc
This guide by British Telecommunications plc provides detailed instructions on raising a fault, including best practices, version control, and using Knowledge Based Diagnostics (KBD) for diagnosing 21C copper and fibre broadband issues. It covers logging in, running KBD, accessing fault reporting to
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Evolution of Light Theory: From Wave Theory to Quantum Theory
At the turn of the century, the discovery of the photoelectric effect challenged the wave theory of light, leading to the development of the quantum theory by Max Planck and Albert Einstein. This new theory introduced the concept of discrete energy units known as quanta, bridging the gap between wav
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Understanding Seismic Source Parameters in Earthquake Dynamics
The seismic source parameters in earthquake dynamics involve describing a fault as a discontinuity causing displacements, requiring a complex treatment of forces. The Earth's equilibrium necessitates a specific system of forces to explain displacements along faults. The seismic moment tensor, consis
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Understanding MapReduce in Distributed Systems
MapReduce is a powerful paradigm that enables distributed processing of large datasets by dividing the workload among multiple machines. It tackles challenges such as scaling, fault tolerance, and parallel processing efficiently. Through a series of operations involving mappers and reducers, MapRedu
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Understanding Fault-Tolerant Systems and Data Recovery Strategies
Explore the concepts of fault-tolerant systems, disaster recovery, high availability, and database technologies for ensuring the safety of information systems. Learn about uptime, downtime, MTBF, and MTTR, along with IBM's disaster recovery layers and solutions like redundancy, replication, and dive
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Health IT Systems Maintenance: Fault-Tolerant Strategies and Backup Best Practices
Explore the essential practices for creating fault-tolerant IT systems in healthcare, including risk assessment, backup strategies, and decommissioning guidelines. Learn about the importance of backups, backup strategies, and the challenges of maintaining system availability 24/7.
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Geometric Routing Concepts and Byzantine Fault Tolerance
Geometric Routing enables routing without overhead, where each node knows its global coordinates and forwards messages based on proximity to the destination. Byzantine Faults pose challenges with arbitrary node behavior, but a Byzantine-Robust Geometric Routing algorithm addresses this in a 3-connec
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HVAC Fault Codes Troubleshooting Guidelines
This guide provides troubleshooting steps for common HVAC fault codes including room temperature sensor malfunction, high and low-pressure protection, communication faults, and more. Each section includes indications, causes, and solutions to help identify and resolve issues effectively.
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Understanding Software Reliability Engineering Concepts
Explore the key topics of availability, reliability requirements, fault-tolerant architectures, and programming for reliability in software engineering. Learn about different types of faults, errors, and failures, along with strategies for fault management and avoidance to enhance software dependabi
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Raft Consensus Algorithm Overview
Raft is a consensus algorithm designed for fault-tolerant replication of logs in distributed systems. It ensures that multiple servers maintain identical states for fault tolerance in various services like file systems, databases, and key-value stores. Raft employs a leader-based approach where one
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Fault Location and Detection in Smart Grids
Fast and accurate fault detection and location are crucial in power grid management, especially in smart grids with bidirectional power flow. This study explores various fault location methods including impedance-based and travelling waves-based approaches. It also discusses the use of Intelligent E
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Fault-tolerant and Load-balanced VuFind Project Overview
Project Background: Part of the National Digital Library initiative, the VuFind project aims to provide a discovery interface for Finnish archives, libraries, and museums. It started development in 2012 due to the insufficiency of existing commercial products. The focus is on enhancing fault toleran
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Fault Localization (Pinpoint) Project Proposal Overview
The Fault Localization (Pinpoint) project proposal aims to pinpoint the exact source of failures within a cloud NFV networking environment by utilizing a set of algorithms and APIs. The proposal includes an overview of the fault localization process, an example scenario highlighting the need for fau
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Understanding RAID 5 Technology: Fault Tolerance and Degraded Mode
RAID 5 is a popular technology for managing multiple storage devices within a single array, providing fault tolerance through data striping and parity blocks. This article discusses the principles of fault tolerance in RAID 5, the calculation of parity blocks, handling degraded mode in case of disk
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PSync: A Partially Synchronous Language for Fault-tolerant Distributed Algorithms
PSync is a language designed by Cezara Drăgoi, Thomas A. Henzinger, and Damien Zufferey to simplify the implementation and reasoning of fault-tolerant distributed algorithms. It introduces a DSL with key elements like communication-closed rounds, an adversary environment model, and efficient runtim
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Theories of Interest in Microeconomics II
Explore various theories of interest in economics, including the Classical Theory, Liquidity Preference Theory by Keynes, Productivity Theory, Abstinence Theory, Time-Preference Theory, Fisher's Time Preference Theory, and the Loanable Fund Theory. These theories offer different perspectives on the
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Byzantine Fault Tolerance: Protocols, Forensics, and Research
Explore the realm of Byzantine fault tolerance through protocols like State Machine Replication and HotStuff, discussing safety, liveness, forensic support, and the impact of Byzantine faults. Dive into decades of research on achieving fault tolerance and examining forensic support in the face of By
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Theories of Divorce Under Hindu Law
Exploring the meaning of divorce under Hindu law, this article discusses the theories of divorce, including Fault Theory, Mutual Consent Theory, and Irretrievable Breakdown of Marriage Theory. These theories reflect the evolution of the concept of divorce within the Hindu Marriage Act of 1955, allow
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Upcoming Changes to IPEX Fault Reporting Journey
This pack explains the upcoming changes to the IPEX fault reporting journey for customers. A new BT Wholesale Voice Products Ordering and Support System will be introduced in March 2017. Customers will need to transition to the new online IPEX fault reporting journey via the BTWholesale.com web port
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Theory and Practice: A Case with Spectrum-Based Fault Localization
This study explores the alignment between theory and practice in the context of Spectrum-Based Fault Localization (SBFL). It delves into the analysis of execution traces, assigning suspiciousness scores to program elements, comparing SBFL formulas like Tarantula and Ochiai, and introducing new formu
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Exploring Fault Localization Techniques in Software Debugging
Various fault localization techniques in software debugging are discussed, including black-box models, spectrum evaluation, comparison of artificial and real faults, failure modes, and design considerations. The importance of effective fault localization and improving fault localization tools is hig
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Comprehensive Overview of Fault Modeling and Fault Simulation in VLSI
Explore the intricacies of fault modeling and fault simulation in VLSI design, covering topics such as testing philosophy, role of testing in VLSI, technology trends affecting testing, fault types, fault equivalence, dominance, collapsing, and simulation methods. Understand the importance of testing
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Fault-Tolerant MapReduce-MPI for HPC Clusters: Enhancing Fault Tolerance in High-Performance Computing
This research discusses the design and implementation of FT-MRMPI for HPC clusters, focusing on fault tolerance and reliability in MapReduce applications. It addresses challenges, presents the fault tolerance model, and highlights the differences in fault tolerance between MapReduce and MPI. The stu
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Quantum Error Correction and Fault Tolerance Overview
Quantum error correction and fault tolerance are essential for realizing quantum computers due to the challenge of decoherence. Various approaches, including concatenated quantum error correcting codes and topological codes like the surface code, are being studied for fault-tolerant quantum computin
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Enhancing Fault Tolerance in BLIS with Algorithm-Based Techniques
Addressing the challenge of soft errors in supercomputers, this paper introduces algorithm-based fault tolerance methods to enhance the resilience of systems like BLIS. By integrating Application-Based Fault Tolerance (ABFT) into BLIS, the study aims to improve error detection and correction mechani
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Low-Redundancy Proactive Fault Tolerance for Stream Machine Learning
This study focuses on enabling fault tolerance for stream machine learning through erasure coding. Fault tolerance is crucial in distributed environments due to worker failures, and existing approaches like reactive fault tolerance and proactive replication have drawbacks. The use of erasure coding
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