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Xerox will nominate 11 people to replace HP's board, a company that it is targeting for a takeover.

Alphabet's self-driving vehicle unit Waymo is expanding testing to more regions of the United States to explore "new transportation solutions."

Continued strong demand for travel boosted airline earnings Thursday even as US carriers struggle with the grinding Boeing 737 MAX crisis that has clouded their outlook.

A Dutch foundation said Thursday it had launched a "joint action" in France against carmaker Volkswagen as part of a European bid for damages for millions of car owners duped in an emissions cheating scheme.

Tinder announced Thursday that US users would soon have a "panic button" to alert authorities to potentially dangerous situations as part of a stepped up safety initiative by the popular dating app.

Background: Conflicting recommendations exist related to which facial protection should be used by health care workers to prevent transmission of acute respiratory infections, including pandemic influenza. We performed a systematic review of both clinical and surrogate exposure data comparing N95 respirators and surgical masks for the prevention of transmissible acute respiratory infections. Methods: We searched various electronic databases and the grey literature for relevant studies published from January 1990 to December 2014. Randomized controlled trials (RCTs), cohort studies and case–control studies that included data on health care workers wearing N95 respirators and surgical masks to prevent acute respiratory infections were included in the meta-analysis. Surrogate exposure studies comparing N95 respirators and surgical masks using manikins or adult volunteers under simulated conditions were summarized separately. Outcomes from clinical studies were laboratory-confirmed respiratory infection, influenza-like illness and workplace absenteeism. Outcomes from surrogate exposure studies were filter penetration, face-seal leakage and total inward leakage. Results: We identified 6 clinical studies (3 RCTs, 1 cohort study and 2 case–control studies) and 23 surrogate exposure studies. In the meta-analysis of the clinical studies, we found no significant difference between N95 respirators and surgical masks in associated risk of (a) laboratory-confirmed respiratory infection (RCTs: odds ratio [OR] 0.89, 95% confidence interval [CI] 0.64–1.24; cohort study: OR 0.43, 95% CI 0.03–6.41; case–control studies: OR 0.91, 95% CI 0.25–3.36); (b) influenza-like illness (RCTs: OR 0.51, 95% CI 0.19–1.41); or (c) reported workplace absenteeism (RCT: OR 0.92, 95% CI 0.57–1.50). In the surrogate exposure studies, N95 respirators were associated with less filter penetration, less face-seal leakage and less total inward leakage under laboratory experimental conditions, compared with surgical masks. Interpretation: Although N95 respirators appeared to have a protective advantage over surgical masks in laboratory settings, our meta-analysis showed that there were insufficient data to determine definitively whether N95 respirators are superior to surgical masks in protecting health care workers against transmissible acute respiratory infections in clinical settings.

‎《BYM 职场系列》-《BYM 职场01 - 职业发展卡住了？默认选项限制了你的想象力》- 2019年5月10日

‎教育 · 2019

American Airlines reported a jump in fourth-quarter profits on Thursday due to continued strong consumer demand that offset the hit from the grounding of Boeing's 737 MAX jets.

A few days before Christmas, renowned pianist João Carlos Martins summoned his friends to a Sao Paulo bar so he could show off the best gift he'd received in years: a new pair of bionic gloves that are letting the 79-year-old play with both hands for the first time in more than two decades.

How would you go about returning books to the correct shelves in a large library with the least amount of walking? How would you determine the shortest route for a truck that has to deliver many packages to multiple cities? These are some examples of the "traveling salesman problem," a type of "combinatorial optimization" problem, which frequently arises in everyday situations. Solving the traveling salesman problem involves searching for the most efficient of all possible routes. To do this easily, we require the help of low-power, high-performance artificial intelligence.

In Atlanta, where the world's busiest airport fields thousands of flights each day, applied linguistics professor Eric Friginal is working to improve communication and safety in global travel. Friginal recently co-authored "English in Global Aviation" with his former student Jennifer Roberts, now an aviation English specialist at Embry-Riddle Aeronautical University in Daytona Beach, Fla., and aviation expert Elizabeth Mathews. Here, he explains how language and communication affect flight safety worldwide.

Big Tobacco likes to stay ahead of the curve—it has to in order to survive. Its fundamental problem is that one in two of its long-term users die from tobacco-related diseases. To hook a new generation into addiction, it has to try every advertising and marketing trick in its playbook.

Today's electromagnetic (EM) spectrum is a scarce resource that is becoming increasingly congested and contested as friendly, unfriendly, and neutral entities vie for available spectrum resources at any given time, location, and frequency. Within the Department of Defense (DoD), radio frequency (RF) systems, such as communications networks and radar, must operate within this congested environment and contend with mission-compromising interference from both self- and externally generated signals. A desire to support wideband EM spectrum operations also adds to the burden, as current approaches to mitigating wideband receiver interference are sub-optimal and force compromises around signal sensitivity, bandwidth usage, and system performance. Further, in the case of self-interference, traditional mitigation approaches such as antenna isolation alone are often not sufficient for protecting wideband receivers.

A car wreck in 1983 paralyzed Navy veteran Mike Erbe from the waist down, but he fought to stay positive, stay active. He finished his engineering degree. He got his pilot's license.

Gathered inside a small shed in the midst of a peaceful meadow, my colleagues and I are about to flip the switch to start a seemingly mundane procedure: using a motor to shake a wooden board. But underneath this board, we have a swarm of roughly 10,000 honeybees, clinging to each other in a single magnificent pulsing cone.

A model invented by researchers at MIT and Qatar Computing Research Institute (QCRI) that uses satellite imagery to tag road features in digital maps could help improve GPS navigation.

A completely new kind of bioreactor for the biological production of methane has enabled the use of extremely high pressure levels for the first time—and set new efficiency standards for the conversion of CO2 and H2 into methane. This significant improvement compared with conventional bioreactors is down to billions of microorganisms that only truly come to life under extreme pressure, as well as Austrian company Krajete GmbH, which designed the bioreactor and has now built the first pilot plant for testing the technology. Successful installation required a combination of experience of implementing chemical facilities and biological expertise.

Even though Apple launched its trio of iPhone 11 models a mere four months ago in September, the rumor mill is already looking across the horizon and speculating about 2020 and the upcoming iPhone 12 (some rumors have already begun for the 2021 iPhones). Keep in mind that we don't know what the new iPhones' official names will be—and Apple has not confirmed anything about them—so we'll go with the iPhone 12 for now. In addition to adding 3-D depth-sensing to its rear cameras and new screen sizes, it's also being speculated that Apple will belatedly include a feature that would make it competitive with its rivals: 5G connectivity.

After revolutionizing software, the open-source movement is threatening to do same to the chip industry.