Tag Archives: D5

Loading
loading..

Museum Lighting & Lighting for Fine Art

IES RP-30-17 Museum Lighting and Lighting for Fine Art (Preview)

Readings: The “30-30” Rule for Outdoor Athletic Events Lightning Hazard

Thunderstorm | Shelter (Building: 30/30 Rule)

The standards for delaying outdoor sports due to lightning are typically set by governing bodies such as sports leagues, associations, or organizations, as well as local weather authorities. These standards may vary depending on the specific sport, location, and level of play. However, some common guidelines for delaying outdoor sports due to lightning include:

  1. Lightning Detection Systems: Many sports facilities are equipped with lightning detection systems that can track lightning activity in the area. These systems use sensors to detect lightning strikes and provide real-time information on the proximity and severity of the lightning threat. When lightning is detected within a certain radius of the sports facility, it can trigger a delay or suspension of outdoor sports activities.
  2. Lightning Distance and Time Rules: A common rule of thumb used in outdoor sports is the “30-30” rule, which states that if the time between seeing lightning and hearing thunder is less than 30 seconds, outdoor activities should be suspended, and participants should seek shelter. The idea is that lightning can strike even when it is not raining, and thunder can indicate the proximity of lightning. Once the thunder is heard within 30 seconds of seeing lightning, the delay or suspension should be implemented.
  3. Local Weather Authority Guidelines: Local weather authorities, such as the National Weather Service in the United States, may issue severe weather warnings that include lightning information. Sports organizations may follow these guidelines and suspend outdoor sports activities when severe weather warnings, including lightning, are issued for the area.
  4. Sports-Specific Guidelines: Some sports may have specific guidelines for lightning delays or suspensions. For example, golf often follows a “Play Suspended” policy, where play is halted immediately when a siren or horn is sounded, and players are required to leave the course and seek shelter. Other sports may have specific rules regarding how long a delay should last, how players should be informed, and when play can resume.

It’s important to note that safety should always be the top priority when it comes to lightning and outdoor sports. Following established guidelines and seeking shelter when lightning is detected or severe weather warnings are issued can help protect participants from the dangers of lightning strikes.

Noteworthy: NFPA titles such as NFPA 780 and NFPA 70 Article 242 deal largely with wiring safety, informed by assuring a low-resistance path to earth (ground)

There are various lightning detection and monitoring devices available on the market that can help you stay safe during thunderstorms. Some of these devices can track the distance of lightning strikes and alert you when lightning is detected within a certain radius of your location. Some devices can also provide real-time updates on lightning strikes in your area, allowing you to make informed decisions about when to seek shelter.

Examples of such devices include personal lightning detectors, lightning alert systems, and weather stations that have lightning detection capabilities. It is important to note that these devices should not be solely relied upon for lightning safety and should be used in conjunction with other safety measures, such as seeking shelter indoors and avoiding open areas during thunderstorms.

Open Commission Meeting

“The wireless age has brought us closer together,

yet we must work to ensure that it does not divide us.”

— Guglielmo Marconi

Maxwell equations: A complete description of electromagnetism and light


 

Net Neutrality & Education Settlements

Why Must the Electromagnetic Spectrum be Regulated?

 


Tentative Agenda

FCC Proposes to Modify Technical Rules for Digital FM Stations

Radio

Readings / Public Broadcasting Act

H.R. 3410 Prohibit Federal funding of National Public Radio

H.R. 3392 Prohibit Federal funding of National Public Radio

Broadband Access for Hospitals & Students

The FCC is the United States’ primary authority for communications laws, regulation and technological innovation. We provide a link to the August 3rd meeting during which time rules for Digital FM Radio and Non-Federal Spectrum Usage were discussed. Campus Security Radio, National Public Radio and Student Radio are central features of education community culture and safety and are typically available when the internet is not.

Radio Spectrum for the Internet of Things

“Wireless Telegraphy” 1899|Guglielmo Marconi

 

Analysis of the FM Radio Spectrum for Secondary Licensing of Low-Power Short-Range Cognitive Internet of Things Devices

Derek T. OtermatIvica KostanicCarlos E. Otero

Electrical and Computer Engineering Department, Florida Institute of Technology

 

Abstract. The analysis presented in this paper indicates that the FM radio spectrum is underutilized in the areas of the continental United States that have a population of 100000 or less. These locations have vacant FM radio spectrum of at least 13 MHz with sufficient spectrum spacing between adjacent FM radio channels. The spectrum spacing provides the required bandwidth for data transmission and provides enough bandwidth to minimize interference introduced by neighboring predicted and unpredicted FM radio stations and other low-power short-range Internet of Thing (IoT) devices. To ensure that low-power short-range IoT devices maintain reliable communications vacant radio spectrum, such as the FM radio spectrum in these areas, will need to be used through cognitive radio.

CLICK HERE to order complete paper.

Related:

Northwestern University: Internet of Things and Edge Computing

Duke University: Edge Computing

National Institutes of Health: Design of Edge Computing Online Classroom Based on College English Teaching

Fish and Chips and the British Working Class

“Fish and Chips” | Fred Laidler (1918–1988)

Fish and Chips and the British Working Class, 1870-1930

Fish and chips was in many ways the pioneer fast-food industry.  It became an essential component of working-class diet and popular culture in parts of London, and over wide areas of industrial midland and northern England and southern Scotland, in the early decades of the twentieth century…I propose to argue that the fish and chip trade was not only important enough in itself to justify sustained historical analysis, but also that it provides a useful vantage point for examining important changes in British society more generally.”

— John Walken, 1998, Journal of Social History


Fire Alarm & Signaling Code

“Prometheus Bound” | Thomas Cole (1847)

NFPA 72 National Fire Alarm and Signaling Code is one of the core National Fire Protection Association titles widely incorporated by reference into public safety legislation.   NFPA 72 competes with titles of “similar” scope — International Fire Code — developed by the International Code Council.  We place air quotes around the word similar because there are gaps and overlaps depending upon whether or not each is adopted partially or whole cloth by the tens of thousands of jurisdictions that need both.

Our contact with NFPA 72 dates back to the early 2000’s when the original University of Michigan advocacy enterprise began challenging the prescriptive requirements for inspection, testing and maintenance (IT&M) in Chapter 14.  There are hundreds of fire alarm shops, and thousands of licensed fire alarm technicians in the education facility industry and the managers of this cadre of experts needed leadership in supporting their lower #TotalCostofOwnership agenda with “code-writing and vote-getting”.   There was no education industry trade association that was even interested, much less effective, in this space so we had to do “code writing and vote getting” ourselves (See ABOUT).

Code writing and vote getting means that you gather data, develop relationships with like minded user-interests, find agreement where you can, then write proposals and defend them at NFPA 72 technical committee meetings for 3 to 6 years.  Prevailing in the Sturm und Drang of code development for 3 to 6 years should be within the means of business units of colleges and universities that have been in existence for 100’s of years.  The real assets under the stewardship of these business units are among the most valuable real assets on earth.

Consider the standard of care for inspection, testing and maintenance.  Our cross-cutting experience in over 100 standards suites allows us to say with some authority that, at best the IT&M tables of NFPA 72 Chapter 14 present easily enforceable criteria for IT&M of fire alarm and signaling systems.  At worst, Chapter 14 is a solid example of market-making by incumbent interests as the US standards system allows.   Many of the IT&M requirements can be modified for a reliability, or risk-informed centered maintenance program but fire and security shops in the education industry are afraid to apply performance standards because of risk exposure.   This condition is made more difficult in large universities that have their own maintenance and enforcement staff.  The technicians see opportunities to reduce IT&M frequencies — thereby saving costs for the academic unit facility managers — the enforcement/compliance/conformity/risk management professionals prohibit the application of performance standards.  They want prescriptive standards for bright line criteria to make their work easier to measure.

While we have historically focused on Chapter 14 we have since expanded our interest into communication technologies within buildings since technicians and public safety personnel depend upon them.  Content in Annex G — Guidelines for Emergency Communication Strategies for Buildings and Campuses — is a solid starting point and reflects of our presence when the guidance first appeared in the 2016 Edition.  We shall start with a review of the most recent transcript of the NFPA Technical Committee on Testing and Maintenance of Fire Alarm and Signaling Systems

NFPA 72 First Draft Meeting (A2024)

Public Emergency Reporting Systems (SIG-PRS) First Draft

Public comment of the First Draft of the 2025 Edition is receivable until May 31, 2023.   As always, we encourage direct participation in the NFPA process by workpoint experts with experience, data and even strong opinions about shortcomings and waste in this discipline.  You may key in your proposals on the NFPA public input facility linked below:

https://www.nfpa.org/login

You will need to set up a (free) NFPA TerraView account.   Alternatively, you may join us any day at 11 AM US Eastern time or during our Prometheus or Radio colloquia.   See our CALENDAR for the online meeting.

Issue: [15-213]

Category: Fire Safety & Security, #SmartCampus, Informatics

Colleagues: Mike Anthony, Joe DeRosier, Josh Elvove, Jim Harvey, Marcelo Hirschler


More

2013 NFPA 72 National Fire Alarm and Signaling Code (357 pages)

TIA-222 Standard For Towers And Antenna Supporting Structures

 

Emergency Communication Strategies for Buildings

 

ARCHIVE / NFPA 72

National Center for Spectator Sports Safety and Security

 

Broadband Access for Hospitals & Students

 

FCC WAIVES RURAL HEALTH CARE AND E-RATE PROGRAM GIFT RULES TO PROMOTE CONNECTIVITY FOR HOSPITALS AND STUDENTS DURING CORONAVIRUS PANDEMIC 

WASHINGTON, March 18, 2020—The Federal Communications Commission today announced important changes to the Rural Health Care (RHC) and E-Rate programs that will make it easier for broadband providers to support telehealth and remote learning efforts during the coronavirus pandemic. Specifically, the FCC’s Wireline Competition Bureau has waived the gift rules until September 30, 2020 to enable service providers to offer, and RHC and ERate program participants to solicit and accept, improved connections or additional equipment for telemedicine or remote learning during the coronavirus outbreak.

Federal Communications Commission Headquarters | Washington, D.C.


More

Low Power FM (LPFM) Broadcast Radio Stations

.

Layout mode
Predefined Skins
Custom Colors
Choose your skin color
Patterns Background
Images Background
Skip to content