Complementary Modalities Cannot Be Ignored

Quantum Information Cannot Be Split into Complementary Parts

We prove a new impossibility for quantum information (the no-splitting theorem): an unknown quantum bit (qubit) cannot be split into two complementary qubits. This impossibility, together with the no-cloning theorem, demonstrates that an unknown qubit state is a single entity, which cannot be cloned or split. This sheds new light on quantum computation and quantum information.

Comparing Bayes Model Averaging and Stacking When Model Approximation Error Cannot be Ignored

We compare Bayes Model Averaging, BMA, to a non-Bayes form of model averaging called stacking. In stacking, the weights are no longer posterior probabilities of models; they are obtained by a technique based on cross-validation. When the correct data generating model (DGM) is on the list of models under consideration BMA is never worse than stacking and often is demonstrably better, provided th...

Editorial comment: Ventricular assist devices for advanced heart failure: evidence that cannot be ignored.

Biological Risks and Laboratory-Acquired Infections: A Reality That Cannot be Ignored in Health Biotechnology

Advances and research in biotechnology have applications over a wide range of areas, such as microbiology, medicine, the food industry, agriculture, genetically modified organisms, and nanotechnology, among others. However, research with pathogenic agents, such as virus, parasites, fungi, rickettsia, bacterial microorganisms, or genetic modified organisms, has generated concern because of their...

Why Hyperbolic Theories of Dissipation Cannot Be Ignored: Comments on a Paper by Kostädt and Liu

Contrary to what is asserted in a recent paper by Kostädt and Liu (“Causality and stability of the relativistic diffusion equation”) [1], experiments can tell apart (and in fact do) hyperbolic theories from parabolic theories of dissipation. It is stressed that the existence of a non–negligible relaxation time does not imply for the system to be out of the hydrodynamic regime. Also at UCV, Cara...