Bush-crickets (Orthoptera: Tettigoniidae) generate sound using tegminal stridulation. Signalling effectiveness is affected by the widely varying acoustic parameters of temporal pattern, frequency and spectral purity (tonality). During stridulation, frequency multiplication occurs as a scraper on one wing scrapes across a file of sclerotized teeth on the other. The frequency with which these too...

The cooperative control of shearer and scraper conveyors is the prerequisite for realization intelligent comprehensive mining equipment unmanned workings. However, because harsh working face environment, complex process mining, many uncertainties, it difficult to establish a mathematical model precisely through operating mechanism. In era big data, data-driven has become popular trend. Therefor...

Female adult specimens of the pennellid copepod Peniculus minuticaudae Shiino, 1956 were collected from the fins of two species of monacanthid fishes, threadsail filefish (Stephanolepis cirrhifer) and black scraper (Thamnaconus modestus), cultured in floating cages in Japan. These collections represent the first records of P. minuticaudae from farmed marine fishes as well as the first records o...

While land reclamation efforts of surface mines have considerably increased soil stability since the implementation SMCRA (Surface Mining Control and Reclamation Act), research suggests that resulting compaction hinders productivity forests post-mining. The Forestry Approach (FRA) was developed to improve forest health in Appalachian region through a five-step process minimizes establishes prod...

Many entrepreneurs identify previously ignored consumer needs as an exciting opportunity for new product development. However, it is likely that very few recognize an opportunity for a platform-based approach to new product development to satisfy these needs. When partners Marion and Weinberger embarked on a morning flight out of Philadelphia, they discussed their frustration with cleaning the ...