Motivated by our earlier paper [1], we discuss how the infamous gravitino problem has a natural built in solution within supersymmetry. Supersymmetry allows a large number of flat directions made up of gauge invariant combinations of squarks and sleptons. Out of many at least one generically obtains a large vacuum expectation value during inflation. Gauge bosons and Gauginos then obtain large m...

Abstract: A new intelligent Automatic Generation Control (AGC) scheme based on Evolutionary Algorithms (EAs) and Fuzzy Logic concept is developed for a multiarea power system. EAs i.e. Genetic Algorithm–Simulated Annealing (GA–SA) are used to optimize the gains of Fuzzy Logic Algorithm (FLA)-based AGC regulators for interconnected power systems. The multi-area power system model has three diffe...

In the continuous work on improving product quality and reducing energy consumption at The Danish Steel Works Ltd. the importance of optimal furnace operation has been recognized in many di erent contexts. Therefore a joint project with The Department of Automatic Control at Lund Institute of Technology has been started with the purpose of developing a novel slab temperature control algorithm f...

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

Abstract Hole expansion ratio of hot rolled ultra-high strength martensitic steels with tensile around 1000 MPa was evaluated. Steels were produced direct quenching and traditional reheat processes final thickness 3 mm. Achieved yield values (R p0.2 ) varied between 918 – 1068 depending on the processing route. Mean hole ratios (HER) in direct-quenched (DQ) tempered (DQT) conditions 22 36 %, no...

We present a general analysis that reveals new aspects of leptogenesis bounds on neutrino masses and on the reheat temperature of the Universe. After revisiting a known effect coming from an unbounded term in the total CP asymmetry, we show that an unbounded term in the flavored CP asymmetries has a stronger impact. It relaxes the lower bound on the reheat temperature down to 108 GeV for (M2−M1...