نتایج جستجو برای: training feedback error fel
تعداد نتایج: 689476 فیلتر نتایج به سال:
A self-amplified spontaneous emission (SASE) freeelectron laser (FEL) is under construction at the Advanced Photon Source (APS). Five FEL simulation codes were used in the design phase: GENESIS, GINGER, MEDUSA, RON, and TDA3D. Initial comparisons between each of these independent formulations show good agreement for the parameters of the APS SASE FEL.
One of the well-known recurrent neural networks is the Elman network. Recently, it has been used in applications of system identification. The network has feedforward and feedback connections. It can be trained essentially as a feedforward network by means of the basic backpropagation algorithm, but its feedback connections have to be kept constant. For training success, it is important to sele...
Introduction: There are methodological challenges on the subject of communication skills training despite general agreement on its advantages. This study was performed to compare the effect of communication skills training through video feedback with the usual method of lecture. Methods: This quasi-experimental double-blind prospective study was performed on two groups of 20 interns in the ye...
Nowadays, robot assisted surgery training relies more and on computer-based simulation. However, the application of such technologies is still limited to early stages practical training. To broaden usefulness simulators, multi-sensory feedback augmentation has been recently investigated. This study aims at combining initial predictive (guidance) subsequent error-based (feedback) in visual hapti...
Linear accelerators delivering high brightness electron beams are essential for driving short wavelength, high gain free-electron lasers (FELs). The FEL radiation output efficiency is often parametrized through the power gain length that relates FEL performance to electron beam quality at the undulator. In this review article we illustrate some approaches to the preliminary design of FEL linac-...
A major obstacle in reliable digital communication is inter-symbol interference (ISI), which is encountered in transmission over frequency-selective channels. A decision feedback equalizer (DFE) offers an effective and a low-complexity solution to combat ISI. However, the DFE is suboptimal and has a performance gap from the matched filter bound. In addition, the DFE suffers from error propagati...
In this paper a methodology to develop a fuzzy rule-based controller is described. The rulebase is obtained by learning from a virtual feedback (PID) controller. The designed controller is supposed to support typical control requirements (i.e. fast-following, zero steady state error, overshoot suppression, etc.) using only a small number of rules. The virtual controller is designed by manual ad...
We review the status of FEL source activity of the ongoing SPARC FEL experiment, developed within the framework of a collaboration among ENEA, CNR, INFN, INFM, Sincrotrone Trieste and University of Rome Tor Vergata. The project is aimed at realising a SASE-FEL source, operating in the visible (around 500 nm), with an extended range of tunability down to the VUV (100 nm) by the use of the mechan...
A possibility to develop a compact linac-based Infrared free-electron laser (IR FEL) facility has been studied at Chiang Mai University (CMU) in Thailand. Characteristics of the emitted FEL light and reliability in operation of the FEL system are determined by the properties of the electron injector, the undulator, and the optical cavity. The proposed injector system for the future IR FEL is ba...
This paper introduces a novel method for the training of a complementary acoustic model with respect to set of given acoustic models. The method is based upon an extension of the Minimum Phone Error (MPE) criterion and aims at producing a model that makes complementary phone errors to those already trained. The technique is therefore called Complementary Phone Error (CPE) training. The method i...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید