We derive a model for a wind turbine tower in the plane of the turbine blades, which comprises an Euler–Bernoulli beam coupled with a nacelle (rigid body) and a two-mass drive-train model (with gearbox). This model has two possible control inputs: the torque created by the electrical generator and the force created by an electrically driven mass located in the nacelle. First, we consider the ca...

We present a large deviation principle at speed N for the largest eigenvalue of some additively deformed Wigner matrices. In particular this includes Gaussian ensembles with full-rank general deformation. For non-Gaussian ensembles, deformation should be diagonal, and we assume that laws entries have sharp sub-Gaussian Laplace transforms satisfy certain concentration properties. these latter es...

In spin-polarized itinerant electron systems, collective spin-wave modes arise from dynamical exchange and correlation (xc) effects. We consider here spin waves in doped paramagnetic graphene with adjustable Zeeman-type band splitting. The are described using time-dependent density functional response theory, treating xc effects within the Slater Singwi-Tosi-Land-Sj\"olander approximations. obt...

PurposeOrgan procurement requires coordination by several entities including the donor hospital staff, accepting transplant surgeons, and multiple thoracic abdominal organ recovery teams. We analyzed timing of each phase heart to assess efficiency identify areas for process improvement.MethodsWe reviewed records recoveries performed a specialized team from January 2021 September 2022. The vario...

The use of alternative fuels can improve the performance diesel engine in terms pollution, [1], [2], [3].Low-carbon [2] successfully replace conventional modern engines or future [1]. This may be an efficient method to ameliorate exhaust emissions for 2050, especially CO 2 reduction, important issue at internal combustion automotive fleets. liquid petroleum gas, [1-5] which has a low carbon con...

The eXtensible Catalog (XC) of this book's title is a project started at University of Rochester's River Campus Libraries to create " a set of open-source applications designed to provide access to resources across a range of databases, metadata schemas, and standards. " Currently the XC Software Suite has four components, downloadable for free at www.extensible-catalog.org: a Drupal-based user...

This work focuses on the correction of both the coecient and the right hand side matrices of the inconsistent matrix equations $AX = B$ and $XC = D$ with orthogonal constraint. By optimal correction approach, a general representation of the orthogonal solution is obtained. This method is tested on two examples to show that the optimal correction is eective and highly accurate.