Chapter 2

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This document appears to be from Chapter 2 of the textbook "Basic Engineering Circuit Analysis" by Irwin. It discusses resistive circuits and provides solutions to example problems involving resistors. Each page contains a circuit diagram, the given information, and the calculated solution. This continues for over 150 pages, with the format and content remaining consistent throughout.

46 Irwin, Basic Engineering Circuit Analysis, 8/E

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This LF Energy webinar took place June 20, 2024. It featured: -Alex Thornton, LF Energy -Hallie Cramer, Google -Daniel Roesler, UtilityAPI -Henry Richardson, WattTime In response to the urgency and scale required to effectively address climate change, open source solutions offer significant potential for driving innovation and progress. Currently, there is a growing demand for standardization and interoperability in energy data and modeling. Open source standards and specifications within the energy sector can also alleviate challenges associated with data fragmentation, transparency, and accessibility. At the same time, it is crucial to consider privacy and security concerns throughout the development of open source platforms. This webinar will delve into the motivations behind establishing LF Energy’s Carbon Data Specification Consortium. It will provide an overview of the draft specifications and the ongoing progress made by the respective working groups. Three primary specifications will be discussed: -Discovery and client registration, emphasizing transparent processes and secure and private access -Customer data, centering around customer tariffs, bills, energy usage, and full consumption disclosure -Power systems data, focusing on grid data, inclusive of transmission and distribution networks, generation, intergrid power flows, and market settlement data

Elasticity vs. State? Exploring Kafka Streams Cassandra State Store

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kafka-streams-cassandra-state-store' is a drop-in Kafka Streams State Store implementation that persists data to Apache Cassandra. By moving the state to an external datastore the stateful streams app (from a deployment point of view) effectively becomes stateless. This greatly improves elasticity and allows for fluent CI/CD (rolling upgrades, security patching, pod eviction, ...). It also can also help to reduce failure recovery and rebalancing downtimes, with demos showing sporty 100ms rebalancing downtimes for your stateful Kafka Streams application, no matter the size of the application’s state. As a bonus accessing Cassandra State Stores via 'Interactive Queries' (e.g. exposing via REST API) is simple and efficient since there's no need for an RPC layer proxying and fanning out requests to all instances of your streams application.

Fuxnet [EN] .pdf

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This time, we're diving into the murky waters of the Fuxnet malware, a brainchild of the illustrious Blackjack hacking group. Let's set the scene: Moscow, a city unsuspectingly going about its business, unaware that it's about to be the star of Blackjack's latest production. The method? Oh, nothing too fancy, just the classic "let's potentially disable sensor-gateways" move. In a move of unparalleled transparency, Blackjack decides to broadcast their cyber conquests on ruexfil.com. Because nothing screams "covert operation" like a public display of your hacking prowess, complete with screenshots for the visually inclined. Ah, but here's where the plot thickens: the initial claim of 2,659 sensor-gateways laid to waste? A slight exaggeration, it seems. The actual tally? A little over 500. It's akin to declaring world domination and then barely managing to annex your backyard. For Blackjack, ever the dramatists, hint at a sequel, suggesting the JSON files were merely a teaser of the chaos yet to come. Because what's a cyberattack without a hint of sequel bait, teasing audiences with the promise of more digital destruction? ------- This document presents a comprehensive analysis of the Fuxnet malware, attributed to the Blackjack hacking group, which has reportedly targeted infrastructure. The analysis delves into various aspects of the malware, including its technical specifications, impact on systems, defense mechanisms, propagation methods, targets, and the motivations behind its deployment. By examining these facets, the document aims to provide a detailed overview of Fuxnet's capabilities and its implications for cybersecurity. The document offers a qualitative summary of the Fuxnet malware, based on the information publicly shared by the attackers and analyzed by cybersecurity experts. This analysis is invaluable for security professionals, IT specialists, and stakeholders in various industries, as it not only sheds light on the technical intricacies of a sophisticated cyber threat but also emphasizes the importance of robust cybersecurity measures in safeguarding critical infrastructure against emerging threats. Through this detailed examination, the document contributes to the broader understanding of cyber warfare tactics and enhances the preparedness of organizations to defend against similar attacks in the future.

Introduction to ThousandEyes AMER Webinar

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MongoDB vs ScyllaDB: Tractian’s Experience with Real-Time ML

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Tractian, an AI-driven industrial monitoring company, recently discovered that their real-time ML environment needed to handle a tenfold increase in data throughput. In this session, JP Voltani (Head of Engineering at Tractian), details why and how they moved to ScyllaDB to scale their data pipeline for this challenge. JP compares ScyllaDB, MongoDB, and PostgreSQL, evaluating their data models, query languages, sharding and replication, and benchmark results. Attendees will gain practical insights into the MongoDB to ScyllaDB migration process, including challenges, lessons learned, and the impact on product performance.

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For senior executives, successfully managing a major cyber attack relies on your ability to minimise operational downtime, revenue loss and reputational damage. Indeed, the approach you take to recovery is the ultimate test for your Resilience, Business Continuity, Cyber Security and IT teams. Our Cyber Recovery Wargame prepares your organisation to deliver an exceptional crisis response. Event date: 19th June 2024, Tate Modern

ScyllaDB Tablets: Rethinking Replication

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ScyllaDB is making a major architecture shift. We’re moving from vNode replication to tablets – fragments of tables that are distributed independently, enabling dynamic data distribution and extreme elasticity. In this keynote, ScyllaDB co-founder and CTO Avi Kivity explains the reason for this shift, provides a look at the implementation and roadmap, and shares how this shift benefits ScyllaDB users.

MongoDB to ScyllaDB: Technical Comparison and the Path to Success

ScyllaDB

What can you expect when migrating from MongoDB to ScyllaDB? This session provides a jumpstart based on what we’ve learned from working with your peers across hundreds of use cases. Discover how ScyllaDB’s architecture, capabilities, and performance compares to MongoDB’s. Then, hear about your MongoDB to ScyllaDB migration options and practical strategies for success, including our top do’s and don’ts.

CTO Insights: Steering a High-Stakes Database Migration

ScyllaDB

In migrating a massive, business-critical database, the Chief Technology Officer's (CTO) perspective is crucial. This endeavor requires meticulous planning, risk assessment, and a structured approach to ensure minimal disruption and maximum data integrity during the transition. The CTO's role involves overseeing technical strategies, evaluating the impact on operations, ensuring data security, and coordinating with relevant teams to execute a seamless migration while mitigating potential risks. The focus is on maintaining continuity, optimising performance, and safeguarding the business's essential data throughout the migration process

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Chapter 2

1. Chapter Two: Resistive Circuits

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Chapter 2

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Chapter 2