Monthly Archives: September 2015

Apple Releases Security Updates for OS X El Capitan, Safari, and iOS

Original release date: September 30, 2015

Apple has released security updates for OS X El Capitan, Safari, and iOS to address multiple vulnerabilities. Exploitation of some of these vulnerabilities may allow an attacker to run arbitrary code.

Available updates include:

  • OS X El Capitan 10.11 for Mac OS X v10.6.8 and later
  • Safari 9 for OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11
  • iOS 9.0.2 for iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

US-CERT encourages users and administrators to review Apple security updates for OS X El Capitan, Safari, and iOS and apply the necessary updates.

This product is provided subject to this Notification and this Privacy & Use policy.

Best Practices for Controlling Lead and Copper Release

Presentation draft, covering summary of current state-of-the-art knowledge for the best treatment strategies for minimizing lead release and controlling copper release. The presentation is intended to aid with compliance with the Lead and Copper Rule, but also provide a guide to the most stringent approaches to assure the lowest lead release and to make sure copper release to the drinking water meets the health-based standard.

New Research Details Ways to Improve Voice Quality of Emergency Communications

Keith Gremban, Director of the Institute for Telecommunication Sciences

September 30, 2015

One of the most challenging aspects of public safety communications is maintaining audio quality in the harsh noise environments in which fire fighters, police officers and other first responders operate. The National Public Safety Telecommunications Council (NPSTC), a federation of public safety organizations, has identified audio quality as a critical requirement, noting that first responders have an immediate and sometimes life-and-death need to understand exactly what is being communicated during an emergency. Today, the Institute for Telecommunications Sciences (ITS),  NTIA’s research laboratory in Boulder, Colo., has released a new report that describes an effort to identify which digital speech and audio technologies are best-suited for mission-critical voice communications over a fourth generation (4G) wireless network using cellular infrastructure.

ITS has been researching for many years reliable ways to quantitatively evaluate the speech intelligibility of voice communication, both independently and as part of its Public Safety Communications Research (PSCR) partnership with the Department of Commerce’s National Institute of Standards and Technology. Long Term Evolution (LTE)—the wireless communications standard used by 4G smart phones—is the technology envisioned for use on the dedicated nationwide public safety broadband network to be deployed by the First Responder Network Authority (FirstNet), an independent authority within NTIA.

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Immigrants play increasing role in U.S. science and engineering workforce

group of young people looking at a computer in a lab

From 2003 to 2013, the number of scientists and engineers residing in the U.S. rose from 21.6 million to 29 million. An important factor in that increase: over the same time period, the number of immigrant scientists and engineers went from 3.4 million to 5.2 million.

Immigrants went from making up 16 percent of the science and engineering workforce to 18 percent, according to a new report from the National Science

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This is an NSF News item.

Response to Ecological Risk Assessment Forum Request for Information on the Benefits of PCB Congener-Specific Analyses

In August, 2001, the Ecological Risk Assessment Forum (ERAF) submitted a formal question to the Ecological Risk Assessment Support Center (ERASC) on the benefits of evaluating PCB congeners in environmental samples. This question was developed by ERAF members Bruce Duncan and Clarence Callahan. ERASC contacted NCEA’s Exposure Analysis and Risk Characterization Group for assistance in responding to the request. The purpose of this memorandum is to formalize the response.

Qualitative and quantitative assessment of Unresolved Complex Mixture in PM2.5 of Bakersfield, CA.

The 2010 CalNex (California Nexus) field experiment offered an opportunity for detailed characterization of atmospheric particulate carbon composition and sources in Bakersfield, CA. In the current study, the authors describe and employ a new protocol for reporting unresolved complex mixture (UCM) in over 30 daily samples. The Bakersfield, CA site has significant contribution from UCM, up to 9% of the daily OC, which makes it an ideal first application. The new protocol reports two UCM peaks for Bakersfield with unique mean vapor pressure, retention time, mass spectra and daily ambient concentration trends. The first UCM peak, UCM-A, was comprised of semi-volatile compounds including alkanes, alkenes, and alkynes, with a mean vapor pressure of 2E-04 Torr and medium to heavy-duty diesel exhaust as a likely source. The second UCM peak, UCM-B, was comprised of linear, branched, and cyclic alkanes, with a mean vapor pressure of 1E-08 Torr. UCM-B had strong similarities to UCM in the NIST Standard Reference Material 1649b (urban dust) and to previously reported detailed UCM for a representative Bakersfield sample (2013), with possible sources including: motor vehicle exhaust and fugitive dust from roads in urban and rural areas, agricultural activities, and construction activities.