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Standard Reference Material

Metrology is the scientific discipline that deals with measurement, including both the theoretical and practical aspects of measurement. It is a broad field that encompasses many different areas, including length, mass, time, temperature, and electrical and optical measurements.  The goal of metrology is to establish a system of measurement that is accurate, reliable, and consistent. This involves the development of standards and calibration methods that enable precise and traceable measurements to be made.

The International System of Units is the most widely used system of units today and is based on a set of seven base units, which are defined in terms of physical constants or other fundamental quantities.  Another important aspect of metrology is the development and use of measurement instruments and techniques. These instruments and techniques must be designed to minimize errors and uncertainties in measurements, and they must be calibrated against recognized standards to ensure accuracy and traceability.

Metrology also involves the development of statistical methods for analyzing and interpreting measurement data. These methods are used to quantify the uncertainty associated with measurement results and to determine the reliability of those results.

National Institute for Standards & Technology

Federal Participation in Consensus Standards

ARCHIVE: UM Welcomes ANSI 2015

The Business of Standards Never Stops

ASTM International (formerly known as the American Society for Testing and Materials) is a globally recognized organization that develops and publishes technical standards for a wide range of products, systems, and services. These standards are used by manufacturers, regulatory bodies, and other stakeholders to ensure that products and services are safe, reliable, and of high quality.

In the field of measurement science, ASTM plays an important role in developing standards and guidelines for measurement techniques and practices. These standards cover a wide range of topics related to measurement science, including the calibration of instruments, the characterization of measurement systems, and the validation of measurement results. They are used by researchers, engineers, and other professionals in academia, industry, and government to ensure that measurements are accurate, precise, and reliable.

ANSI Public Review

 

ASTM standards for measurement science are developed through a process that involves input from experts in the field, including researchers, industry professionals, and regulatory bodies. These standards are updated regularly to reflect advances in measurement science and technology, as well as changes in industry and regulatory requirements.  This is a far better way to discover and promulgate leading practice.  In fact, there are regulations intended to restrain the outsized influence of vertical incumbents in legislative precincts where market-making happens.

Federal Participation in Consensus Standards

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Pecan Pie

University of George Financial Report 2022 | $2.1B

https://en.wikipedia.org/wiki/Pecan_pie

 

University of Georgia: Cranberry Pecan Pie

The popularity of Georgia pecan pie can be attributed to several factors:

  1. Abundance of Pecans: Georgia, particularly in the southern region of the United States, has a favorable climate for pecan trees. Pecans have been grown in Georgia for centuries, and the state has a long history of pecan cultivation. With such abundance, pecans became a staple ingredient in many traditional Southern recipes, including pecan pie.
  2. Southern Culinary Tradition: Southern cuisine, known for its comfort foods and indulgent desserts, heavily features pecans in various recipes. Pecan pie is a classic Southern dessert that has been passed down through generations, becoming deeply ingrained in the culinary heritage of the region. Georgia, as a quintessential Southern state, plays a significant role in promoting and preserving these culinary traditions.
  3. Cultural Significance: Pecan pie is not only a delicious dessert but also holds cultural significance in the South. It is often served during holidays and family gatherings, evoking feelings of warmth, nostalgia, and tradition. The act of sharing a slice of pecan pie with loved ones is a cherished tradition for many families in Georgia and throughout the South.

Standards Georgia

Collaborative Standards Development System

UL’s Collaborative Standards Development System Login

Underwriters Laboratories catalog is heavy on product titles (because manufacturers can build the cost of conformance into the product and pass it on to the user) and light on system interoperability titles (our primary concern).  Many titles are US adaptations of IEC, ITU and ISO titles.  We follow a few when they are heavily referenced into the same interoperability titles such as the National Electrical Code and the International Building Code.   We refer most  — but not all — electrotechnology titles to IEEE E&H).  IEEE E&H meets 4 times monthly and is open to everyone.

Non-electrotechnology titles):

3600 Standard for Measuring and Reporting Circular Economy Aspects of Products, Sites and Organizations (December 6)

Electrotechnology titles: Workspace re-organization should be complete by end of 2022

489 Standard for Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker (January 16)

1778 Standard for Safety for Uninterruptible Power Systems (January 16)

2201 Standard for Safety for Carbon Monoxide (CO) Emission Rate of Portable Generators (December 19)

 3600 Standard for Measuring and Reporting Circular Economy Aspects of Products, Sites and Organizations (December 6)

62990 Standard for Safety for Workplace Atmospheres (October 9)
– 217 Standard for Safety for Smoke Alarms (August 28)
– 1480 Standard for Safety for Speakers for Fire Alarm and Signaling Systems, Including Accessories (November 27)
– 231-202x, Standard for Safety for Power Outlets (September 25)
268 Standard for Safety for Smoke Detectors for Fire Alarm Systems (November 13)
– 283 Standard for Central-Station Alarm Services (May 10)
– 325 Standard for Safety for Door, Drapery, Gate, Louver, and Window Operators and Systems (October 3)
– 347A Standard for Safety for Medium Voltage Power Conversion Equipment (April 3)
1004-5 Standard for Safety for Fire Pump Motors (September 12)
– 1072 Standard for Safety for Medium-Voltage Power Cables (September 11)
1998 Standard for Safety for Software in Programmable Components (November 6)
– 2251 Standard for Safety for Plugs, Receptacles, and Couplers for Electric Vehicles (October 10)

– UL 2580 Standard for Safety for Batteries for Use in Electric Vehicles (April 24)

– Standard for Photovoltaic (PV) Modules – Type Approval, Design and Safety Qualification – Retesting (national adoption with modifications of IEC 62915).  The revisions appear to be largely harmonization revisions; updating normative references.  (March 20)

– 2800 Standard for Safety for Medical Device Interoperability.  Referred to IEEE E&H (April 3)

– 347A Standard for Safety for Medium Voltage Power Conversion Equipment (April 3)

– 414 Standard for Safety for Meter Sockets (April 3)

– 347 Standard for Safety for Medium-Voltage AC Contactors, Controllers, and Control Centers (August 14)

– 1996 Standard for Safety for Electric Duct Heaters (August 21)

– 6142 Standard for Small Wind Turbine Systems (August 21)

– 8801 Standard for Safety for Photovoltaic (PV) Luminaire Systems (May 10)

– 61800 Standard for Safety for Adjustable Speed Electrical Power Drive Systems (April 24)

– 60950 Standard for Safety for Information Technology Equipment (May 9)

– 1480 Standard for Safety for Speakers for Fire Alarm and Signaling Systems, Including Accessories (July 26)

– 2200 Standard for Stationary Engine Generator Assemblies (June 19)

– 2388 Standard for Safety for Flexible Lighting Products (June 20)

2900 Standard for Safety for Software Cybersecurity for Network-Connectable Products (October 11)

“Mountain High Apple Pie”

North Carolina State University Facilities

 

Kitchens 300

Standards North Carolina

How students help to improve campus parking

CSUSB Transportation Services

Parking Lot Striping Standards

Chicken Shepard’s Pie

NSF International (Ann Arbor, Michigan): Food Equipment Standards

This traditional Irish dish originated as a thrifty way to repurpose leftover meat. In the late 18th century, the concept evolved from using lamb or mutton, commonly tended by shepherds, hence the name. The dish typically comprises minced meat — lamb, beef or chicken — cooked with vegetables and gravy, topped with mashed potatoes.

Ingredients:
• 1 can chicken, drained
• ½ can canned sliced potatoes
• 2 tsp onion powder
• ½ cup canned peas, drained
• 2 tbsp Worcestershire sauce
• 1 tbsp butter
• Splash of milk
• 2 tsp salt
• 2 tsp black pepper
• 1 tsp nutmeg

Directions:
1. Heat potatoes in microwave safe bowl, ~2 mins. Mash the potatoes with the milk and butter, a Teaspoon each of salt, pepper, and garlic powder, stir well. Adjust seasoning. Set aside.
2. Add remaining ingredients, stir well.
3. Spoon the mashed potatoes evenly on top of the meat.
4. Cook covered in the microwave oven for 3-5 minutes on medium power.
5. Cut into 2 portions. Scoop out from the bottom to keep the layers intact.

More:

University of Michigan Recipe

New Mexico State University Recipe

University of Illinois Venison Recipe

This video has been made available for informational and educational purposes only. UCCS hereby disclaims any and all liability to any party for any direct, indirect, implied, punitive, special, incidental or other consequential damages arising directly or indirectly from any use of this video, which is provided as is, and without warranties.

 

Transport & Parking

Rijksuniversiteit Groningen

We need to re-scale and re-organize our approach to the mobility topic generally — responsive to most best practice discovery results — as recorded in technical literature and landing in regulations at all levels of government.  The size of the domain has expanded beyond our means.  We need to approach the topic from more angles — distinguishing among land, air and space mobility — following market acceptance and integration.

Throughout 2024 our inquiries will track relevant titles in the following standards catalogs:

Institute of Electrical and Electronic Engineers

International Code Council

National Fire Protection Association

ASHRAE International

We will maintain priority wherever we find  user-interest issues in product-oriented standards setting catalogs (ASTM International, SAE International and Underwriters Laboratories, for example).  Agricultural equipment standards (were Michigan-based ASABE is the first name) will be place on the periodic Food (Nourriture) and Water standards agenda.  Each organization contributes mightily to the “regulatory state” where we are, frankly, outnumbered.  When their titles appear in interoperability standards that affect the physical infrastructure of campuses we will explore their meaning to our safer, simpler, lower-cost and longer-lasting priority.  (See our ABOUT)

Join us today at the usual time.  Use the login credentials at the upper right of our home page.

 

Drivers facing the yellow-light-dilemma

Electric Vehicle Open Charge Point Protocol

 

EV Charging Stations Integration into Public Lighting Infrastructure

Connected & Automated Vehicles

Economics of Electric Vehicle Charging Infrastructure in a Campus Setting

Electric Vehicle Charging Infrastructure for Long Distance Travel in Sweden

Collision Resistant Hash Function for Blockchain in V2V Communication

“Waiting for the School Bus in Snow” 1947 John Phillip Falter

Electric Vehicle Charging

International Zoning Code

International Energy Conservation Code

International Existing Building Code

Electric Vehicle Power Transfer

Gallery: Electric Vehicle Fire Risk

Standard for Parking Structures

Energy Standard for *Sites* and Buildings

High-Performance Green Buildings

“Gas” 1940 Edward Hopper

3.141592653589793238462643383279…

Today we refresh our understanding of the discovery and application of the mathematical constant π.  The Greek letter π was chosen because it is the first letter of the Greek word “periphery” or “circumference” (περιφέρεια in Greek). It was a natural choice to represent this mathematical constant, which is fundamental to geometry and many other fields of mathematics and science.

Its value was not determined by any one person or organization. Rather, it is a convention that developed over time through the work of many mathematicians; starting with Archimedes.  The earliest known use of the symbol π for the ratio of a circle’s circumference to its diameter was by Welsh mathematician William Jones in 1706. However, it was the Swiss mathematician Leonhard Euler who popularized the use of π in the 18th century. Euler used π in his numerous mathematical publications, and his influence helped establish the use of the symbol as standard notation.

e^(i*pi) + 1 = 0

The Euler equation is a mathematical equation that is widely used to analyze the behavior of electrical circuits and to calculate the complex power and reactive power.  The complex power of an electrical circuit is a complex number that represents the total power in the circuit, including both the real power (which represents the energy that is actually consumed by the load) and the reactive power (which represents the energy that is stored and released by the circuit’s reactive elements).

The Euler equation is used to represent the complex power in polar form, where the magnitude represents the total power in the circuit, and the phase angle represents the relative contributions of the real and reactive power.  By using complex power analysis, engineers can calculate the real power, reactive power, and apparent power (which is the magnitude of the complex power) of the circuit, as well as the power factor, which is the ratio of the real power to the apparent power.

Power factor is an important parameter in AC circuits, as it represents the efficiency with which the circuit is delivering power to the load.

Overall, complex power analysis provides a powerful tool for analyzing the behavior of AC circuits, and it is used extensively in the design and analysis of electrical power systems, shown in the polar form phasor calculation below.

From “Electrical Power System Protection and Coordination” Michael A. Anthony, McGraw-Hill Book Company 1994

 

Today at 15:00 UTC we will examine this calculation specifically, but also expand upon how the value of π shows up in nearly every other engineering discipline.  Use the login credentials at the upper right of our home page.

More:

There are several physical constants that are considered to be important in the known universe. These constants are fundamental properties of nature and do not change over time or space. Here are some of the most important physical constants:

  1. Speed of light (c): This constant represents the speed at which light travels in a vacuum. Its value is approximately 299,792,458 meters per second. This constant plays a critical role in our understanding of the universe and is the fastest speed that anything can travel in the known universe.
  2. Planck constant (h): The Planck constant is a fundamental constant of nature that appears in almost all quantum mechanical equations. Its value is approximately 6.626 x 10^-34 joule-seconds. It plays a crucial role in the description of the behavior of subatomic particles and is used in calculations involving quantum mechanics.
  3. Gravitational constant (G): The gravitational constant represents the strength of the gravitational force between two objects. Its value is approximately 6.674 x 10^-11 newton-meters squared per kilogram squared. This constant plays a crucial role in the study of gravity and is used in calculations involving celestial mechanics.
  4. Boltzmann constant (k): The Boltzmann constant relates the average kinetic energy of particles in a system to its temperature. Its value is approximately 1.381 x 10^-23 joules per Kelvin. This constant is important in statistical mechanics and is used in calculations involving the behavior of gases, liquids, and solids.
  5. Avogadro constant (NA): The Avogadro constant represents the number of particles in one mole of a substance. Its value is approximately 6.022 x 10^23 particles per mole. This constant is important in the study of chemistry and is used in calculations involving chemical reactions and the properties of materials.
  6. Electron charge (e): The electron charge represents the fundamental charge of an electron. Its value is approximately -1.602 x 10^-19 coulombs. This constant is important in the study of electromagnetism and is used in calculations involving electric fields and electric currents.

These constants are critical to our understanding of the universe and are used in a wide variety of fields, from physics and chemistry to engineering and technology.

Finian’s Rainbow

“Finian’s Rainbow” is a musical (written by E.Y. Harburg – University of Michigan 1918) that tells the story of an Irishman named Finian McLonergan who comes to the United States with his daughter Sharon to bury a pot of gold stolen from a leprechaun. Finian believes that if he buries the gold in the soil of Fort Knox, it will grow and multiply, allowing him to live a life of luxury.

However, the town they settle in, Rainbow Valley, is owned by a racist senator named Billboard Rawkins, who wants to evict the sharecroppers living on the land. With the help of a local activist named Woody, Sharon and the sharecroppers team up to stop Rawkins’ eviction plans.

Meanwhile, Og, the leprechaun whose gold Finian stole, comes to America to get his gold back. Og meets and falls in love with Susan, the mute daughter of the sharecropper Woody, and realizes that he wants to stay in America with her.

The story deals with themes of racism, prejudice, and the American dream, and features memorable like “Old Devil Moon,” “How Are Things in Glocca Morra?” and “If This Isn’t Love.”

Lively Arts 300

 

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