Tag Archives: Michigan

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Drivers facing the yellow-light-dilemma

Center for Digital Education | University of Michigan

 

Stochastic hybrid models for predicting the behavior of drivers facing the yellow-light-dilemma

Paul A. Green | University of Michigan

 Daniel Hoehener & Domitilla Del Vecchio | Massachusetts Institute of Technology

  

Abstract:  We address the problem of predicting whether a driver facing the yellow-light-dilemma will cross the intersection with the red light. Based on driving simulator data, we propose a stochastic hybrid system model for driver behavior. Using this model combined with Gaussian process estimation and Monte Carlo simulations, we obtain an upper bound for the probability of crossing with the red light. This upper bound has a prescribed confidence level and can be calculated quickly on-line in a recursive fashion as more data become available. Calculating also a lower bound we can show that the upper bound is on average less than 3% higher than the true probability. Moreover, tests on driving simulator data show that 99% of the actual red light violations, are predicted to cross on red with probability greater than 0.95 while less than 5% of the compliant trajectories are predicted to have an equally high probability of crossing. Determining the probability of crossing with the red light will be important for the development of warning systems that prevent red light violations.

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Copper can’t be mined fast enough to electrify the United States

Edison electric vehicle | National Park Service, US Department of the Interior

Bridge Michigan: Researchers say a copper shortage could imperil Michigan’s EV future

Related:

2017 NEC Section 110.5 | Aluminum wiring

History of the English Speaking Peoples

Michigan Central

Since so much of what we do in standards setting is built upon a foundation of a shared understanding and agreement of the meaning of words (no less so than in technical standard setting) that time is well spent reflecting upon the origin of the nouns and verbs of that we use every day.   Best practice cannot be discovered, much less promulgated, without its understanding secured with common language.

Word Counts

 

2024 Alumni Awards

Cambridge: English language education in the era of generative AI

Gallery: Great Lakes

The Great Lakes contain enough fresh water to cover the land area of the entire United States under 3 meters of water.

We collect 15 video presentations about Great Lake water safety and sustainability prepared by the 8 Great Lake border state colleges and universities and their national and international partners in Canada.

Tour Around Lake Superior

 

 

Water 100


When the wicked problems of peace and economic inequality cannot be solved, political leaders, and the battalions of servile administrative muckety-mucks who report to them, resort to fear-mongering about an imagined problem to be solved centuries hence assuming every other nation agrees on remedies of its anthropogenic origin.  We would not draw attention to it were it not that large tranches of the global academic community are in on the grift costing hundreds of billions in square-footage for research and teaching hopelessness to our children and hatred of climate change deniers.

Before the internet is scrubbed of information contrary to climate change mania, we recommend a few titles:

“Gulliver’s Travels” Jonathan Swift | Start at Chapter 5, PDF page 235

The Mad, Mad, Mad World of Climatism: Mankind and Climate Change Mania

Climate Change Craziness Exposed: Twenty-One Climate Change Denials of Environmentalists

Climate Psychosis

Gallery: Other Ways of Knowing Climate Change

 

Reliability Analysis for Power to Fire Pumps

Reliability Analysis for Power to Fire Pump Using Fault Tree and RBD

Robert Schuerger | HP Critical Facilities (Project Lead, Corresponding Author) 

Robert Arno | ITT Excelis Information Systems

Neal Dowling | MTechnology

Michael  A. Anthony | University of Michigan

 

Abstract:  One of the most common questions in the early stages of designing a new facility is whether the normal utility supply to a fire pump is reliable enough to “tap ahead of the main” or whether the fire pump supply is so unreliable that it must have an emergency power source, typically an on-site generator. Apart from the obligation to meet life safety objectives, it is not uncommon that capital on the order of 100000to1 million is at stake for a fire pump backup source. Until now, that decision has only been answered with intuition – using a combination of utility outage history and anecdotes about what has worked before. There are processes for making the decision about whether a facility needs a second source of power using quantitative analysis. Fault tree analysis and reliability block diagram are two quantitative methods used in reliability engineering for assessing risk. This paper will use a simple one line for the power to a fire pump to show how each of these techniques can be used to calculate the reliability of electric power to a fire pump. This paper will also discuss the strengths and weakness of the two methods. The hope is that these methods will begin tracking in the National Fire Protection Association documents that deal with fire pump power sources and can be used as another tool to inform design engineers and authorities having jurisdiction about public safety and property protection. These methods will enlighten decisions about the relative cost of risk control with quantitative information about the incremental cost of additional 9’s of operational availability.

 

 

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August 14, 2003

“The world is changed by examples, not by opinions.”

Marc Andreesen (Founder of Netscape, the first dominant web browser)

 

August 14, 2003 Power Outage at the University of Michigan

Trowel Trades

Bricklayers, sometimes known as masons, are skilled craftsmen that must be physically fit, have a high level of mathematical skill and a love for precision and detail.

 

Bricklaying standards are guidelines and specifications that ensure the quality and safety of bricklaying work. These standards are often established by industry organizations, regulatory bodies, or national building codes. While specific standards may vary by region, some core bricklaying standards include:

Building Codes: Compliance with local building codes is essential. These codes provide regulations for construction practices, including specifications for masonry work. Bricklayers must adhere to the building codes relevant to the specific location of the construction project.

ASTM International Standards: ASTM International (formerly known as the American Society for Testing and Materials) develops and publishes technical standards for various industries, including construction. ASTM standards related to bricklaying cover materials, testing procedures, and construction practices.

Masonry Construction Standards: Organizations like the Masonry Standards Joint Committee (MSJC) in the United States publish standards specifically focused on masonry construction. These standards address topics such as mortar, grout, reinforcement, and structural design considerations.

Quality Control: Standards related to quality control in bricklaying include specifications for mortar mixtures, proper curing of masonry, and guidelines for inspecting finished work. Adherence to these standards helps ensure the durability and longevity of the masonry construction.

Safety Standards: Occupational safety standards, such as those outlined by the Occupational Safety and Health Administration (OSHA) in the United States, are critical for protecting workers on construction sites. These standards cover aspects like fall protection, scaffolding safety, and the proper use of personal protective equipment.

Brick and Block Standards: Standards related to the dimensions, composition, and properties of bricks and concrete blocks are important for achieving structural integrity. These standards specify characteristics such as compressive strength, absorption, and dimensional tolerances.

Construction Tolerances: Tolerances dictate acceptable variations in dimensions and alignments in bricklaying work. These standards help ensure that the finished structure meets design specifications and industry-accepted tolerances.

Testing and Inspection: Standards related to the testing and inspection of masonry work help verify that construction meets specified requirements. This includes procedures for mortar testing, grout testing, and overall quality inspections.

It’s important for bricklayers and construction professionals to be aware of and follow these standards to guarantee the safety, quality, and compliance of their work. Additionally, staying informed about updates to industry standards is crucial as they may evolve over time to reflect advancements in materials, techniques, and safety practices.

St. Olaf College | Dakota County Minnesota

International Building Code Chapter 21: Masonry

Best Coffee Spots Near Campus

 

“The coffee-house is an original British institution, but as there are daily effusions of wit and humor

in several of these little periodical papers, I think we may be justly said

to have our Coffee-houses among us.”

(From “The Spectator,” No. 9, March 10, 1711)

Michigan Central

Ellie Younger: Best Coffee Spots Near Campus

Artisanal coffee departs from mass-market approaches and replaces it with emphasis on craftsmanship, quality, and attention to detail throughout the entire process—from cultivation to brewing.  Key aspects:

» Artisanal coffee producers often prioritize high-quality beans. They might focus on specific varieties, regions, or even single-origin beans, showcasing unique flavors and characteristics.

» The roasting process is considered an art in itself. Artisanal coffee roasters carefully roast the beans to bring out the best flavors. They may experiment with different roasting profiles to achieve specific taste profiles.

» Unlike mass-produced coffee, artisanal coffee is often roasted in smaller batches. This allows for better quality control and the ability to pay closer attention to the nuances of each batch.

» Artisanal coffee is appreciated for its distinct flavor profile. Roasters and baristas might highlight tasting notes, aromas, and other characteristics that make each cup unique.

» Artisanal coffee shops or enthusiasts often explore various brewing methods, such as pour-over, AeroPress, or siphon brewing. These methods can be more time-consuming but are believed to extract the best flavors from the beans.

From the way the beans are ground to the water temperature during brewing, artisanal coffee enthusiasts pay attention to every detail to ensure a superior cup of coffee.

— Publisher Marketing

The Decline of Men in Colleges

The Great Good Place: Ray Oldenburg

 

“I have often pleased myself with considering the two different scenes of life which are carried on at the same time in those different places of rendezvous, and putting those of the playhouse and the coffee-house together.”

(From “The Spectator,” No. 10, March 12, 1711)

America’s Cultural Revolution: How the Radical Left Conquered Everything

“For decades, left-wing radicals patiently built a revolution in the shadows. Then suddenly, after the death of George Floyd, their ideas exploded into American life.

Corporations denounced the United States as a “system of white supremacy.” Universities pushed racially segregated programs that forced students to address their racial and sexual “privilege.” And schools injected critical race theory in the classroom, dividing children into “oppressor” and “oppressed.”

In this New York Times bestseller, Christopher F. Rufo exposes the inner history of the left-wing intellectuals and militants who slowly and methodically captured America’s institutions, with the goal of subverting them from within. With profiles of Herbert Marcuse, Angela Davis, Paulo Freire, and Derrick Bell, Rufo shows how activists have profoundly influenced American culture with an insidious mix of Marxism and racialist ideology. They’ve replaced “equality” with “equity,” subverted individual rights in favor of group identity, and convinced millions of Americans that racism is endemic in all of society. Their ultimate goal? To replace the constitution with a race-based redistribution regime, administered by “diversity and inclusion” commissars within the bureaucracy.

America’s Cultural Revolution is the definitive account of the radical Left’s long march through the institutions. Through deep historical research, Rufo shows how the ideas first formulated in the pamphlets of the Weather Underground, Black Panther Party, and Black Liberation Army have been sanitized and adopted as the official ideology of America’s prestige institutions, from the Ivy League universities to the boardrooms of Wal-Mart, Disney, and Bank of America. But his book is not just an exposé. It is a meticulously-researched and passionate refutation of the arguments of CRT—and a roadmap for the counter-revolution to come.”

Manhattan Institute


“To be at home is to have a place in the world which is yours, where you are not a stranger and where you find the outlines of your identity. In the modern world, however, where the sense of home has been eroded by technology and bureaucracy, architecture can create a substitute for this sense, by defining spaces which answer to the dreams and memories of the people who live in them.”
— Roger Scruton

Excellence in Facilities Management

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