Saving one compressor will cover the cost of a voltage monitor and then some.

Posted by Alan Coopersmith on Nov 12

BrainBox AI intends to integrate ABB’s MSR business and its installed base of 12,000-plus retail locations in its current operations.

Designed for HVAC and refrigeration professionals to view electrical and temperature readings, this product logs data remotely using the ExView® W-Series app on smartphones and tablets via Bluetooth.

There is a new term making its way into the commercial controls arena: digital twin.

Quilt, a newly launched company, has introduced a ductless heat pump that they say simplifies the installation and rebate process, while offering transparent pricing.

Posted by Vladimir Soldatov on Sep 17

Posted by CISA on Mar 28

This Episode is a round table discussion about Ultra-Large Scale Systems. In 2006, a number of authors (among them our guests Linda Northrop, Doug Schmidt, Kevin Sullivan, and Gregor Kiczales) have produced a report that addressed the following question: Given the issues with today's software engineering, how can we build the systems of the future that are likely to have billions of lines of code? In this episode, our guests discuss many of the issues that arise from this kind of system and provide an overview of the research areas that should be investigated in order to tackle the challenge. If you want to get more detailed information, you can read the ULS Report (PDF).

In this Episode I talk about the results of the listener survey and reply to some of the suggestions and criticism expressed in survey replies.

In this Episode we discuss fault tolerance based on the new book by Bob Hanmer. This is the actually the first part of the discussion, the remainder will be published in the next episode of SE Radio. We start by discussing some of the context for fault tolerant systems and the imperfect world assumption. We then discuss a number of terms we will need when discussing the fault tolerance patterns. We then discuss the fault tolerance mindset and connect fault tolerance to a number of related subject areas, such as software quality. We then discuss the shared context for the patterns that follow, among them the important observation that fault tolerance does not come for free! Finally we provide an overview over the different sections covered in the book and start the detailed discussion of the patterns by looking at the Architectural Patterns section. The next episode will discuss the remaining patterns in the book.

This is the second part of the discussion on fault tolerance with Bob Hanmer (if you didn't listen to Episode 77, which contains part one, please go back and listen now; this episode builds on that previous one!) We start by discussing a set of error detection patterns. Among are the well-known approaches such as checksums and voting. We then look at error recovery patterns, including restart, rollback or roll forward. The next section looks at error mitigation patterns, which include shedding load and doing fresh work before stale. The last patterns section then looks at fault treatment patterns. We conclude the episode with a small discussion about how to design systems using (these and other) patterns, and with some thoughts on why actually wrote the book.

In this episode, Arno talks to Jim Melton about the SQL programming language. In addition to covering the concepts and ideas behind SQL, Jim shares stories and insights based on his many years' experience as SQL specification lead.

This episode is about being a consultant in the software business.

For Episode 200 of Software Engineering Radio, Diomidis Spinellis interviews Markus Völter, the podcast’s founder. Markus works as an independent researcher, consultant, and coach for itemis AG in Stuttgart, Germany. His focus is on software architecture, model-driven software development and domain specific languages as well as on product line engineering. Markus also regularly publishes articles, […]

Tobias Kaatz talks to former Kixeye CTO Randy Shoup about company culture in the software industry in this sequel to the show on hiring in the software industry (Episode 208). Prior to Kixeye, Randy worked as director of engineering at Google for the Google App Engine and as chief engineer and distinguished architect at eBay. […]

Felienne talks with Peter Hilton on how to name things. The discussion covers: why naming is much harder than we think, why naming matters in programming and program comprehension, how to create good names, and recognize bad names, and how to improve your naming skills.

Jafar Soltani of Rare (Microsoft Studios) discusses Continuous Delivery in AAA Games and how it can increase quality, reduce crunch, and deliver games faster. Topics include implementation and architecture, asset and delivery pipelines, and special challenges of games.

Max Neunhoffer of ArangoDB discusses about multi-model databases in general, and open source ArangoDB, in specific, with show host Nishant Suneja. The show discussion covers motivation behind deploying a multi-model database in an enterprise setting, and deep dives into ArangoDB internals.

Tim Coulter, the founder of Truffle (Ethereum DApp development framework) discusses the Truffle framework for Ethereum SmartContracts and Decentralized App development. Kishore Bhatia spoke with Tim Coulter about: Ethereum Decentralized Apps (DApps)...

Rich Harris, author of the JavaScript module bundler Rollup, discusses his JavaScript framework Svelte as a high-performance alternative to mainstay frameworks like React, Angular, and Vue. We begin with a brief overview of the framework and how...

Thomas Graf, Co-Founder of Cilium, discusses eBPF and XDP and how they can be leveraged for a wide variety of use cases across networking, observability, and security.

Nigel Poulton, author of The Kubernetes Book and Docker Deep Dive, discusses Kubernetes fundamentals, why Kubernetes is gaining so much momentum, deploying an example app, and why Kubernetes is considered "the" Cloud OS.

This week, Postgres server developer Bruce Momjian joins host Robert Blumen for a discussion of multi-version concurrency control (MVCC) in the Postgres database. They begin with a discussion of the isolation requirement in database transactions (I in ACID); how isolation can be achieved with locking; limitations of locking; how locking limits concurrency and creates variability in query runtimes; multi-version concurrency control as a means to achieve isolation; how Postgres manages multiple versions of a row; snapshots; copy-on-write and snapshots; visibility; database transaction IDs; how tx ids, snapshots and versions interact; the need for locking when there are multiple writers; how MVCC was added to Postgres; and how to clean up unused space left over from aged-out versions.

Jeroen Mulder, author of Multi-Cloud Strategy for Cloud Architects, joins host Robert Blumen for a discussion of public cloud, private cloud, and multi-cloud computing architectures and trends. They start by considering what defines cloud computing and what differentiates the major cloud providers, including whether they are more alike or different in the services they offer.  Jeroen discusses governance, regulatory compliance, and data locality as drivers of where enterprises want to run their workload. They explore use cases for multi-cloud, and discuss architectural challenges in migrating to kubernetes, as well as issues with networking, security, and identity management with multi-cloud architectures. Finally, they discuss running public cloud compute on on-prem resources with Anthos, Outback, and related technologies.

Nir Valtman, co-Founder and CEO at Arnica, discusses pipelineless security with SE Radio host Priyanka Raghavan. They start by defining pipelines and then consider how to add security. Nir lays out the key challenges in getting good code coverage with the pipeline-based approach, and then describes how to implement a pipelineless approach and the advantages it offers. Priyanka quizzes him on the concept of "zero new hardcoded secrets," as well as some ways to protect GitHub repositories, and Nir shares examples of how a pipelineless approach could help in these scenarios. They then discuss false positives and handling developer fatigue in dealing with alerts. The show ends with some discussion around the product that Arnica offers and how it implements the pipelineless methodology.

TerraMaster�s TD2 Thunderbolt 3 is a 2-bay DAS (Direct-Attached Storage) drive aimed at professional users and, as the name suggests comes with a pair of Thunderbolt 3 interfaces. TerraMaster�s TD2 Thunderbolt 3 looks just like a 2-bay NAS with the obvious exception that the TD2 comes with a very useful carrying handle. The enclosure is built from ... [PCSTATS]

"About a year ago we took a look at Razer�s Kraken Tournament Edition headset, which we really did enjoy. It was however designed for professional gamers, hence the name �Tournament Edition�. For those looking for a more polished home solution Razer has the new Kraken Ultimate Edition. This sits as their flagship Kraken gaming headset and brings al... [PCSTATS]

As temperatures continue to rise, California workers, worker protection groups, and state regulators are making progress on implementing heat regulations.

Marjorie Kelly's new book critiques the U.S. economy's embrace of "wealth supremacy," and explores alternate models of democratic economies.

Amid ongoing colonization, the Indigenous Shuar people are taking back control of their economic and political futures.

When everything that brings LGBTQ people joy is under attack, dancing, laughing, and celebrating our persistent existence are direct acts of resistance.

In this excerpt, author Misty Pratt explores emerging research—and her own experience—that suggests remedies like park prescriptions may be as key to mental and physical health as diet, exercise, and sleep.

Sex education is often taboo in close-knit Druze communities, but a new generation is creating its own care networks.

AI is trained on data from our health care system as it exists, which means the data is contaminated by racial, economic, and regional disparities. But there are solutions.

Facing a health care system without sufficient translation services and a grueling economic landscape, Punjabi residents in Fresno, California, have created an organization to help meet their community’s unique needs.

Birth workers serving Black pregnant people maintain the holistic methods—and data privacy—that distinguish doula care from the medical-industrial complex.

Instead of gutting Medicare and Medicaid, as Project 2025 envisions, here's what a holistic, collective approach to health care would look like.

Author Hilary Giovale knows that moving through guilt into accountability creates necessary change—for yourself and others.

The bond between people and their pets can be life-saving, especially amid the struggle for safe housing.

this really is a good list of books

Donald Trump is set to return to the White House as the next president of the US after winning the 2024 election. What do kids in the US think about the results of the election?

Community College Librarian/Faculty Diversity Internship (Berkeley--onsite)

Cabling in power substations is very important due to the fact that they are the longest parts of a system and therefore act as efficient antennas that pickup and or radiate noise. In HV substations, there are different kinds of conductors... Read more

The post The problem of induced voltages in control cables in high voltage substations appeared first on EEP - Electrical Engineering Portal.

To be clear at the beginning of this article, determining the cross-section of conductors and cables is, for sure, not the most exciting part of electrical design. There are much more challenging and more exciting parts than staring at endless... Read more

The post The art of determining the right cross-section of low voltage conductors appeared first on EEP - Electrical Engineering Portal.

To be clear from the very beginning of this article, there is no standard model for wiring low voltage switchboards and panelboards. However, for the wide variety of installations and ranges of power ratings, there are local work practices, regulations... Read more

The post Dos, don’ts and precautions in wiring cables and conductors inside low-voltage switchboard appeared first on EEP - Electrical Engineering Portal.

For a power system to operate efficiently and securely, the importance of the correct and coordinated provision and control of reactive power cannot be overemphasised. It is necessary to examine reactive power requirements under both steady-state and dynamic conditions. Although... Read more

The post Parameters of generators, transformers, lines and cables for vars, voltage and loads control appeared first on EEP - Electrical Engineering Portal.

A voltage drop is the total amount of voltage loss that happens through all or part of an electric circuit due to impedance and other factors. The more the voltage drops in the system, the more negative impacts will likely... Read more

The post Voltage Drop Analysis and Calculation Essentials (MS Excel Sheet Bonus) appeared first on EEP - Electrical Engineering Portal.

This technical article discusses twelve different methods for laying high voltage cables. Out of the ten, four are deemed conventional and eight are deemed progressive. Many various utilities and companies all across the globe are making use of them, though... Read more

The post Twelve high voltage cable construction techniques used worldwide appeared first on EEP - Electrical Engineering Portal.