Barriers, berms, buildings, and natural terrain may affect the propagation of aircraft noise by shielding or reflecting sound energy. If terrain and manmade structures obstruct the line‐of‐sight between the source and the receiver, then sound energy will be attenuated at the receiver. This attenuation increases with the terrain and structures’ size and proximity to either the source or the receiver. If gaps exist in the terrain or structures, then the potential benefits of acoustical shielding will be su...

Airports worldwide are setting aggressive zero- or low-emissions targets. To meet these targets, airports are deploying new strategies, adopting innovative financing mechanisms, and harnessing the collective influence of voluntary emissions and reporting programs. In tandem, new and affordable zero- or low-emissions technologies are rapidly becoming available at airports. The TRB Airport Cooperative Research Program's pre-publicaton draft of ACRP Research Report 220: Guidebook for Developing a Zero- or L...

Airports must maintain a safe and efficient facility while considering environmental impacts. Though traditional environmental challenges such as noise and water quality remain, several new themes are emerging, including energy management, sustainability, resiliency, and wildlife management. Airports will need guidelines and practices to help them address these pressing issues, and the first step in the process is to identify knowledge gaps and research needs. The TRB Airport Cooperative Research Program...

Most general aviation (GA) airports are minimally staffed and rarely employ environmental specialists, and the National Environmental Policy Act (NEPA) can be overwhelming to work through for those not familiar with the requirements. The TRB Airport Cooperative Research Program's ACRP Research Report 211: Guidance for Using the Interactive Tool for Understanding NEPA at General Aviation Airports , and the accompanying interactive tool that was developed, will help airport staff from GA airports understan...

The introduction of unmanned aircraft systems (UAS) has presented a wide range of new safety, economic, operational, regulatory, community, environmental, and infrastructure challenges to airports and the National Airspace System. These risks are further complicated by the dynamic and shifting nature of UAS technologies. The pre-publication draft of ACRP Research Report 212: Airports and Unmanned Aircraft Systems, Volume 1: Managing and Engaging Stakeholders on UAS in the Vicinity of Airports provides gu...

More airport operations/management academic programs at both the high school and community college levels would help the airport industry. With baby boomers currently reaching retirement age at the rate of 10,000 each day, and later generations much smaller in size, new employees are not entering the workforce swiftly enough to replace those leaving because of retirement, illness, and other complicating factors. As a result, the aviation industry, like others, is experiencing a significant labor shortage...

Most U.S. state departments of transportation (DOTs) are collecting weigh-in-motion data with a wide variety of sensor types and using them in a variety of applications. Many agencies use WIM data to aid in pavement design, although most are not currently using a Pavement ME (mechanistic-empirical) Design application. WIM for bridge and asset management purposes is used much less often. The TRB National Cooperative Highway Research Program's NCHRP Synthesis 546: Use of Weigh-in-Motion Data for Pavement, ...

Star Trek Online‘s limited-event, Defense of Pahvo, will take place May 7-28 and will be available for captains playing on PC, Xbox...

If Bryan Fuller had stayed with Star Trek: Discovery, his vision for a Mirror Universe wouldn’t have been like the type shown...

In an update on Twitter, Wilson Cruz and Scott Gamzon, Discovery editor, provided an update on the progress of the third season...

This weekend, in a virtual panel as reported by TrekMovie, Robert Duncan McNeill and Garrett Wang spoke about their new podcast and...

Doug Jones will be participating in the InHouse-Con this weekend, and while doing promotion for that, he answered questions in an interview...

Although general aviation airports have historically been funded by federal, state, and local entities, the private sector is increasingly playing a larger role. This involvement has ranged on a continuum from service and management contracts to singular projects at airports that involve leasing mechanisms to long-term leases and the whole-scale private development of general aviation airports. In an era of declining resources and increasingly scrutinized public expenditures, private-sector involvement i...

Staff from smaller airports typically lack specialized expertise in the negotiation and development of airport property or the resources to hire consultants. The TRB Airport Cooperative Research Program's ACRP Research Report 213: Estimating Market Value and Establishing Market Rent at Small Airports provides airport management, policymakers, and staff a resource for developing and leasing airport land and improvements, methodologies for determining market value and appropriate rents, and best practices ...

The U.S. Federal Highway Administration has an opening for a position that closes June 1, 2020.

TRB’s Airport Cooperative Research Program (ACRP) Report 39: Recommended Guidelines for the Collection and Use of Geospatially Referenced Data for Airfield Pavement Management offers recommended guidelines for the collection and use of geospatially referenced data for airfield pavement management. The guidelines provide a data schema, data collection methods, data quality requirements, and other relevant information required for developing specifications and standards for integrating geospatial data into...

Airports continually balance demands to improve infrastructure within the realities of available budgets. Green revolving funds (GRFs) offer an alternative approach for investing in projects that generate operational savings. These funds work by tracking verified cost reductions from implemented actions, and then transferring those savings to a reserve that provides capital for future qualified projects such as energy system upgrades. A number of universities have managed GRFs for over a decade. Municipa...

They met in June 1975 in Boise, Idaho, for a workshop organized by the Transportation Research Board’s (TRB’s) Special Task Force on Low-Volume Roads. Although the field trip took them over humble forest roads, workshop participants had global ambitions. Among the workshop’s sponsors were the U.S. Agency for International Development (USAID) and the International Bank for Reconstruction and Development, which today is part of the World Bank. To learn the whole story, check out the latest release in the T...

If you’re fortunate enough to still be working during the coronavirus (COVID-19) pandemic, you are likely to be doing so from home. Teleworking (or telecommuting) has been suddenly and widely adopted. For example, Arizona DOT reports doubling the number of employees who telework in multiple departments in just two weeks. In conjunction with Texas' disaster declaration related to COVID-19, TxDOT is also requiring its office-based employees to telework beginning March 16. Your workplace is likely making si...

Руководитель Delivery Club Гюванч Донмез считает, что пандемия ускорила выполнение планов компании

Обычные тесты будут проводиться за счет работодателя, а тесты на антитела оплатит город

Use of Surface Treatments to Extend Pavement Life: A Case Study on US 301, Sussex County, Virginia , released by the Virginia Department of Transportation

University of California Pavement Research and National Center for Sustainable Transport have postponed the International Symposium on Pavement Life Cycle Assessment from June 3-6, 2020 to January 13-15, 2021 in Sacramento, CA. TRB is pleased to cosponsor this event. The symposium will focus on the implementation of Life Cycle Assessment (LCA) for pavements. The workshop address the implementation of LCA in pavement operations at the network and project levels.

Does your organization know how to measure and verify pavement surface condition data based on mapping sensor technologies? TRB will conduct a webinar on Wednesday, June 10, 2020, from 1:00 PM to 3:00 PM Eastern to discuss the challenges and solutions from experience on actual projects. In pavement management systems, accurate and precise condition data are essential for making data-driven decisions about maintenance and rehabilitation projects. Some condition data, including surface cracking and other d...

EPA announces the availability of the All-Ages Lead Model (AALM), Version 2 software with updated supporting documentation (External Review Draft). The AALM Model is scheduled to undergo an independent peer review by EPA's Science Advisory Board in October 2019. For more information related to scheduling and peer reviewers for this new tool, please visit the SAB AALM Project website. [Federal Register Notice Sep 24, 2019]

In March 2020, EPA announced a new website for finding key EPA resources about the Coronavirus (COVID-19) virus. Additional information can be found on CDC's Coronavirus (COVID-19) website, a list of Disinfectants EPA's Pesticide Program recommend (today) to ward off spreading the virus, and CDC's list of symptoms to watch for.

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.

A new breed of smart telescopes is set to take users past these hurdles, and get them out under the night sky. We recently had a chance to put Vaonis’ Stellina ‘smart telescope’ through its paces, and we’re intrigued at the glimpse it provides at the future of observational astronomy.

The post Our Review of Stellina: a ‘Smart Telescope’ for 21st Century Astronomy appeared first on Universe Today.

So, you think you know Galileo? A new book out from Simon and Schuster publishing looks at the life and times of one of the most famous astronomers there ever was: Galileo Galilei. Galileo and the Science Deniers by Dr. Mario Livio not only looks at the life and times of the famous astronomer Galileo, but busts some of the most famous myths surrounding Galileo, and looks at his greatest discoveries and tempestuous clash with the Roman Catholic Church and its aftermath. Livio also connects the science denialism of the day, with comparisons to modern clashes between politics and science.

The post Review: Galileo and the Science Deniers by Mario Livio appeared first on Universe Today.

Poor, dim-witted humanity. We used to think we were the center of everything. That wasn’t that long ago, and even though we’ve made tremendous advancements in our understanding of our situation here in space, we still have huge blind spots. For one, we’re only now waking up to the reality of interstellar objects passing through …

Continue reading "A Cool Idea to Catch Up With an Interstellar Visitor"

The post A Cool Idea to Catch Up With an Interstellar Visitor appeared first on Universe Today.

TRB’s Airport Cooperative Research Program (ACRP) Research Report 200: Using GIS for Collaborative Land Use Compatibility Planning Near Airports offers guidance for using Geographic Information Systems (GIS) as a collaboration tool to encourage compatible land use around airports. The report is designed to help airport and community planners seeking to work together to protect existing and future airport development as well as maintain safety and improve quality of life for those living and working near ...

Introduction of unmanned aircraft systems (UAS) will pose safety, economic, operational, regulatory, community, environmental, and infrastructure challenges to airports. These risks are further complicated by the dynamic nature of UAS technological development. Experiences and lessons learned from recent major aviation system changes demonstrate the critical importance of ensuring that airports have the resources needed to avoid adverse impacts and maximize benefits as early as possible. This pre-publica...

Environmental regulations have long required airports to undertake review of many actions associated with planning and development. More recently, airports have embraced sustainability as a means for ensuring the long-term viability and community benefits of their facilities. The TRB Airport Cooperative Research Program's ACRP Research Report 209: Integrating Sustainability Planning and the Environmental Review Process is designed for airport industry practitioners who are interested in gaining a better ...

Airports and the communities they serve view robust air service as an important element for economic well-being and overall quality of life. Incentive programs are often used to encourage airlines to maintain or augment service to a community. Recent airline industry trends, including airline consolidation, use of larger aircraft, the rise of ultra-low-cost airlines, and challenges with pilot supply as well as regulatory and policy developments, have affected the significance of these programs. The TRB A...

With large swaths of the country still stifling under quarantine from the COVID-19 pandemic, more people than ever are supplementing their meager IRL social interactions with online alternatives. But but doing so can become a proverbial minefield wit...

Elon Musk has been frustrated that Tesla’s Fremont factory has remained shut down due to Alameda County’s lockdown order, and that anger has apparently reached the boiling point. Musk has claimed that he’ll move Tesla’s headquarters to Nevada or Texa...

Susan Heap, the Director of Operations at Ferrovial Services says that "Transportation is meaningful across all societies, for many different reasons. I chose a career that connected me to things that matter to all of us. I stay in this industry because of the variety of people and projects that I get to work with every day. There is always a new challenge to overcome or skill-set to learn." Thank you Susan for participating in TRB's Centennial Celebration. To read the more than 60 responses to April's q...

TRB's “Tell Us ‘Our’ Story" challenge is now looking into the future. What impact do you hope to have on the world and how is the Transportation Research Board helping you make that impact? What is your vision for the Transportation Research Board 100 years from now? What are solutions that you have identified as a result of research you learned about through TRB? TRB welcomes all stories: small or large, profound or light-hearted, sobering or humorous. In addition to posting responses to these questions...

Issue 324 of TRB's magazine (November-December 2019) focuses on climate change resilience. Along with several explorations within that topic, a short history of TRB is offered as well as all the usual standing features of the magazine. TR News is TRB's bimonthly magazine featuring timely articles on innovative and state-of-the-art research and practice in all modes of transportation. It also includes brief news items of interest to the transportation community, research pays off articles , profiles of tr...

TRB 2021 Committee Paper Review will go on as scheduled. The submission site will open June 1 and the deadline is August 1. We have learned a lot during this year’s transition to the TRR Editorial Board workflow for publication papers and have listened to your feedback. Important improvements this year include: • Committee review comments will go to authors by October 31. • Full papers will be posted in the interactive program unless the authors “opt out” because they wish to publish the paper elsewhere....

Incompatible land uses can threaten the safe utility of airports and expose people living and working nearby to potentially unacceptable levels of noise or safety risk. At the state level, all 50 states have enacted some form of airport zoning legislation since the 1950s. The majority of states (90 percent) have enacted laws mandating or enabling local governments to adopt, administer, and enforce airport zoning regulations. The TRB Airport Cooperative Research Program's ACRP Research Report 206: Guidebo...

The needs of airports may vary depending on the types of operations typically conducted at the airport, as well as the type of weather common to the airport. The TRB Airport Cooperative Research Program's ACRP Syntheis 105: Airport Surface Weather Observation Options for General Aviation Airports aims to provide the operators of general aviation (GA) airports a comprehensive source of information about airport-based weather observation options so they may make informed decisions to support the specific o...

Pletení, to přece není práce pro chlapa, řeknete si. Ovšem ve slovenských Čičmanech (a vůbec v celé oblasti Horního Pováží) by mnozí nesouhlasili. Tady bývalo pletení ponožek z ovčí vlny výsostnou činností tamních bačů. V dnešní době je ovšem takový pletač nadmíru vzácný.

Seriál „Byl jednou jeden život“ zná snad každý pod 40 let. V německé verzi tohoto populárního seriálu pro děti hodné bílé krvinky zabíjejí plynem zlé bakterie, které volají „To je hrůza!“. Volají to v židovském jazyku jidiš. Jazykové mutace v jiných zemích tento výkřik neobsahují a neobsahuje ho ani originální francouzská verze. To si toho opravdu za 35 let vysílání seriálu v Německu nikdo nevšiml? Nebo se nad tím jen dobře bavili? Na antisemitskou narážku upozornil nyní článek na německém webu zabývajícím se médii Übermedien.de.

Rozvolňování opatření proti šíření koronaviru v Česku zdárně pokračuje podle plánu. Otevírají se obchody a instituce, firmy obnovují svoji činnost a zanedlouho otevřou zahrádky u hospod. Lidé už začali plánovat dovolenou a nervózně sledují vývoj zpráv, jestli budou moct letos k moři či nikoliv. Vše by mohlo nasvědčovat tomu, že se všechno brzy vrátí do starých kolejí. Ale to je omyl, česká společnost se vrátí do poněkud odlišnějšího světa. Protože u toho už nebude řada firem a desítky či možná stovky tisíc lidí budou pracně zajišťovat svoji existenci.

Množství politiků po celém světě v posledních dnech trápí zásadní otázka. Jak zabránit druhé vlně koronaviru bez škrcení ekonomiky? Možnou cestu ukázalo hlavní město Litvy. Majitelé menších podniků zde museli stejně jako na jiných místech v Evropě dočasně pozastavit svou živnost. Vedení Vilniusu ve snaze zabránit jejich krachu v rámci uvolňovaní restriktivních opatření rozhodlo o umožnění bezplatného využití veřejných prostor.

Někteří badatelé tvrdí, že dějiny Židů v Číně začínají již v 6. století před naším letopočtem za dynastie Čou, k tomu však nejsou žádné archeologické či jiné materiální důkazy. Všeobecně se tak počítají počátky židovské přítomnosti až od 8. století našeho letopočtu, za vlády dynastie Tang, kdy do Říše středu dorazily první skupinky obchodníků po Hedvábné stezce a usazovali se podél ní. Dnes od 18 hodin můžete na Facebooku Reflexu sledovat premiéru speciálního hudebního pořadu Židé v říši středu. Dějiny izraleského národa a Číny jsou zajímavě propojené.

Zdá se, že pandemie COVID 19 ustupuje. Lidem otrnulo a už se objevují logické otázky, kdo zaplatí vzniklé škody nejen podnikatelům, ale i dalším subjektům. Paleta poškozených se stále rozšiřuje a není skoro hodiny, aby v mediích nevystoupil někdo z poškozených láteřící, že na něj vláda zapomněla anebo že pomoc přichází pomalu. Někdy oprávněně, někdy spíše vykutáleně.

Bombastické oslavy Dne vítězství v Moskvě 9. května 2015, kdy svět ještě nesužoval nový koronavirus, mimo jiné znovu oživily dávnou otázku, jaký byl podíl tehdejšího, dnes ovšem již neexistujícího Sovětského svazu a v jeho rámci Ruské federace na úsilí vynaloženém za Velké vlastenecké války, jakož i na obětech. Je dobré si je připomenout zvláště v dnešní době, kdy média vytvářejí dojem, že klíčovou událostí se stalo vystoupení vlasovců v Řeporyjích na konci války v Evropě.