This technical appendix from the TRB Airport Cooperative Research Program, ACRP Web-Only Document 38: Technical Appendix to Air Demand in a Dynamic Competitive Context with the Automobile , supplements ACRP Research Report 204: Air Demand in a Dynamic Competitive Context with the Automobile with more detailed documentation of the research effort, including greater technical detail on the analytical models created for the research and their application.

Construction of load-carrying geosynthetic-reinforced bridge abutments are surging worldwide. The design directly supports the load of bridge girders without the need of deep foundation. TRB is hosting a webinar on Tuesday, May 26, 2020 from 2:00 to 4:00 PM Eastern that will provide an overview, comparison, and discussion of methodologies used in the design of such bridge abutments. They have the potential of alleviating the “bump at the bridge,” expediting construction, and requiring comparatively smal...

The charismatic and familiar monarch butterfly serves as a flagship species for pollinator conservation, and gives rights-of-way entities opportunities to engage a diverse array of stakeholders who are invested in not only restoring monarch numbers to sustainable levels, but also mitigating many other environmental and economic issues. This pre-publication draft of the TRB National Cooperative Highway Research Program's NCHRP Research Report 942 Pre-Pub: Evaluating the Suitability of Roadway Corridors fo...

TRB’s Airport Cooperative Research Program (ACRP) Report 76: Addressing Uncertainty about Future Airport Activity Levels in Airport Decision Making provides a systems analysis methodology that augments standard airport master planning and strategic planning approaches. The methodology includes a set of tools for improving the understanding and application of risk and uncertainty in air traffic forecasts as well as for increasing the overall effectiveness of airport planning and decision making.

Hello Internet! In This Episode: Erin and Weer’d discuss the recent spree killing in Canada, and the conspicuous lack of information on it; David talks about gun parts that are great to have around; Weer’d interviews Logan Metesh of High … Continue reading →

The Trump administration has continued to weaken air pollution regulations despite warnings that long-term exposure to dirty air relates to higher COVID-19 death rates. Harvard researchers made the first statistical link between the two last month, just before the administration loosened some clean air regulations and failed to tighten others.

As all aspects of transportation deal with the unfolding effects of the COVID-19 pandemic, there are research needs, gaps, and potential ways to leverage innovation revealing themselves across all modes, systems, and disciplines in transportation. In keeping with the mission of the National Academies of Sciences, Engineering, and Medicine to provide trusted, timely, impartial, and evidence-based information exchange and research, TRB is issuing an urgent and directed call for Research Needs Statements sp...

Field Monitoring of Erosion and Sediment Control Practices and Development of Additional Iowa DOT Design Manual Guidance , released by the Institute for Transportation at Iowa State University

TRB's Airport Cooperative Research Program (ACRP) Research Report 155: Guidebook for Advanced Computerized Maintenance Management System Integration at Airports explores the use of a Computerized Maintenance Management System (CMMS) to manage a variety of assets across a number of different airport systems. This report develops guidance on the steps necessary to implement a CMMS, factors for consideration in prioritizing which systems should be included in the CMMS using a phased approach, and the steps ...

TRB’s Airport Cooperative Research Program (ACRP) Synthesis 34: Subsurface Utility Engineering Information for Airports examines ways in which information on subsurface utilities is collected, maintained, and used by airports, their consultants, and the U.S. Federal Aviation Administration to help increase the effectiveness of, and enhance safety during, infrastructure development programs at airports. The report also compares the current state of technology and effective processes from other industry se...

If you look out on the sky on a nice clear dark night, you’ll see thousands of intense points of light. Those stars are incredibly far away, but bright enough to be seen with the naked eye from that great distance – a considerable feat. But what you don’t see are all the small stars, …

Continue reading "In the far future, the universe will be mostly invisible"

The post In the far future, the universe will be mostly invisible appeared first on Universe Today.

One of the most fascinating things about planet Earth is the way that life shapes the Earth and the Earth shapes life. We only have to look back to the Great Oxygenation Event (GOE) of 2.4 billion years ago to see how lifeforms have shaped the Earth. In that event, phytoplanktons called cyanobacteria pumped the …

Continue reading "New Data Show How Phytoplankton Pumps Carbon Out of the Atmosphere at an Enormous Scale"

The post New Data Show How Phytoplankton Pumps Carbon Out of the Atmosphere at an Enormous Scale appeared first on Universe Today.

As all aspects of transportation deal with the unfolding effects of the COVID-19 pandemic, there are research needs, gaps, and potential ways to leverage innovation revealing themselves across all modes, systems, and disciplines in transportation. In keeping with the mission of the National Academies of Sciences, Engineering, and Medicine to provide trusted, timely, impartial, and evidence-based information exchange and research, TRB is issuing an urgent and directed call for Research Needs Statements sp...

Removed From Troubles (OPEN for application) Fonts: Pixel / Bitmap (Graphics / Layouts / Effects); Domains (.com) (Web Miscellany)

Thanks to Bryan Wendell, author of "Bryan on Scouting" for the following explanation of the Scouter Code of Conduct: We ask our Scouts to follow the Scout Oath and Scout Law. Adult leaders, though, are held to an additional standard. It’s called the Scouter Code of Conduct. Think of it as a checklist of expectations for adult conduct in the Scouting...

Now there is a "30 Day Challenge" for Scouts BSA. Scout, Tenderfoot, and Second Class challenge sheets are available.   ...