A crane was used to place two precast concrete bridges in California's Yolo Bypass Wildlife Area in a bid to improve wetland management and provide more habitat. The bridges replace pipes that were often blocked by debris.
Lake Michigan's rising waters are proving to be a challenge for the Chicago area's North Shore communities. Residents and communities have been hiring engineers to find solutions that may be able to prevent further shoreline recession and landslides.
The city of Williamsport, Pa., is working with the Williamsport Sanitary Authority and Loyalsock Township supervisors to find ways to clean up area waters that enter Chesapeake Bay. Specialists have been hired to draw up a plan to reduce nutrients and pollution in waterways in accordance with state guidelines.
Lands and waterways around the world that are protected to preserve ecosystems may be endangered by plans to build more than 500 dams, according to a World Wildlife Fund report. Dams hurt native freshwater ecosystems while interfering with natural sediment flows and species migration, the WWF says.
Unnecessary maintenance mires engineers in "a backlog of tasks that are not necessarily helping to increase the availability and reliability of your system," writes Victor Borges. The answer is a risk-based strategy that can "prioritize the most critical activities based on engineering evidence," Borges writes.
Distribution and fulfillment operations have not embraced predictive maintenance as quickly as other industrial sectors, but could reap the same improvements in cost, efficiency and uptime, writes Eric Rice. The same sensor monitoring and data analysis procedures that are used in industrial settings can be implemented by many distribution and fulfillment firms, Rice writes.
The CMRP and CMRT certifications are based on knowledge gathered by practitioners, cover the range of responsibility of a reliability engineer and are subject to regular job task analyses, writes SMRP board member Vlad Bacalu. "When held to a higher standard, individuals are not only trained with the best knowledge, but the industry also rises above and retains the investment in talent," Bacalu writes.
Additive manufacturing has transformative potential due to its responsiveness and flexibility, but the technology lacks standardization and its throughput and high costs are serious drawbacks, writes Todd Grimm. The technology has proven its mettle as a short-term supply chain stopgap during the coronavirus pandemic, but it is not mature enough to replace conventional manufacturing, Grimm writes.
CO2 levels can yield helpful estimates of air quality as building owners seek to minimize the risk of coronavirus transmission indoors, writes Shelly Miller, professor of mechanical engineering at the University of Colorado. High air exchange rates, efficient filters and air purifiers can all play a role in limiting the chance of transmission, Miller writes.
A breakthrough artificial intelligence model that has a classifier for predicting tasks and a "rejector" to identify whether it or a human expert should complete tasks yielded 8% improved performance in diagnosing collapsed lung and enlarged heart in chest X-rays, compared with human readers or AI alone, according to findings published on arXiv.org. "We hope that our method will inspire machine learning practitioners to get more creative in integrating real-time human expertise into their algorithms," said researcher David Sontag.