These articles discuss Earth's many dynamic processes and their interactions.

These articles discuss Earth's many dynamic processes and their interactions.

We conducted statistical analyses and used modeling techniques to develop derailment probabilities for freight trains and freight cars operating on North American railroads. Knowing the expected frequency of derailment and the conditional probabilities of derailment for individual cars enables estimation of the derailment risk as it is affected by train length, operating speed, and positioning ...

Edgar Gomes earned his PhD at the University of Coimbra in Portugal under the supervision of Carlos Duarte. He then travelled to the USA to train as a postdoctoral fellow in the laboratory of Gregg Gundersen at Columbia University in New York. Before moving back to Portugal in 2014, Edgar was a group leader in the Myology Institute at the University of Pierre and Marie Curie in Paris (France) a...

Study and practice of medical virtual acupuncture training simulation system has great significance and practical application value on accurate positioning of human acupuncture points, simulation of acupuncture treatment, evaluation of the acupuncturists’ skill, and reduction of acupuncturists’ mistake. By using mathematical physical modeling, we propose a skin model based on triangular mesh fo...

Nucleosomes are the fundamental repeating unit of chromatin and comprise the structural building blocks of the living eukaryotic genome. Micrococcal nuclease (MNase) has long been used to delineate nucleosomal organization. Microarray-based nucleosome mapping experiments in yeast chromatin have revealed regularly-spaced translational phasing of nucleosomes. These data have been used to train co...

The collection of massive Global Positioning System (GPS) data from travel surveys has increased exponentially worldwide since the 1990s. A number of methods, which range from rule-based to advanced classification approaches, have been applied to detect travel modes from GPS positioning data collected in travel surveys based on GPS-enabled smartphones or dedicated GPS devices. Among these appro...

Abstract. For indoor positioning, ultra-wideband (UWB) radar comes to the forefront due its strong penetration, anti-jamming, and high-precision ranging abilities. However, complex environment disorder of obstacles, problems diffraction, instability caused by UWB signals also emerge, which make it difficult predict noise leads a great impact on accuracy stability measurement data in short term....