Roivainen Anne

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The paper studies synchronization transitions in a system of coupled non-identical self-sustained chaotic oscillators of the Rossler type. The interest devoted to the Rossler oscillators is motivated by their capability to behave chaotically at very high frequencies. Both phase synchronization and lag synchronization are analyzed numerically in terms of a(More)
This paper is focused on the evaluation of analog simulation of nonlinear systems for communication. Some problems encountered when performing analog simulations are listed. We propose some techniques to tackle them. Our motivation is to encourage scientists to use analog simulation techniques for the analysis of systems despite the enormous focus on the(More)
This paper considers a model describing the dynamics of a transmitter-receiver system in communication engineering. The bifurcation structure is analyzed to define the nature of the bifurcations exhibited by the system. Found are both the complex dynamical behavior of the system and its extreme sensitivity to tiny changes in the model parameters. Crisis,(More)
We present a novel approach to beam profile monitoring around a 3-GeV accelerator (Saturne) based on a break-through in secondary emission hardware. Emphasis was set on minimizing multiple scattering so as to preserve the high quality emittance required for nuclear spectroscopy. The secondary emission material is plated by a photographic process as a grid(More)
Glucagon-like peptide-1 receptor (GLP-1R) is a molecular target for imaging of pancreatic beta cells. We compared the ability of [Nle14,Lys40(Ahx-NODAGA-64Cu)NH2]-exendin-4 ([64Cu]NODAGA-exendin-4) and [Nle14,Lys40(Ahx-NODAGA-68Ga)NH2]-exendin-4 ([68Ga]NODAGA-exendin-4) to detect native pancreatic islets in rodents. The stability, lipophilicity and affinity(More)
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