PURPOSE To examine the impact of radiation (ie, craniospinal irradiation [CSR] dose and boost volume) and complications (ie, hydrocephalus and other neurologic complications, including mutism) on patterns of change in intellectual functioning in medulloblastoma survivors. PATIENTS AND METHODS We conducted a retrospective review of 113 patients treated for medulloblastoma between 1983 and 2011...

The symmetries of the topological Yang-Mills theory are studied in the Hamiltonian formalism and the generators of the twisted N=2 superPoincaré algebra are explicitly constructed. Noting that the twisted Lorentz generators do not generate the Lorentz symmetry of the theory, we relate the two by extracting from the latter the twisted version of the internal SU(2) generator. The hermiticity prop...

The influence of switching frequency on the low-frequency oscillation in the voltage-controlled buck-boost converter is studied in this paper. Firstly, the mathematical model of this system is derived. And then, a glimpse at the influence of switching frequency on the low-frequency oscillation in this system by MATLAB/Simulink is given. The improved averaged model of the system is established, ...

In this paper, we propose the post-classification scheme that is useful for improving weak-hypothesis combination of AdaBoost. The post-classification scheme allows the weak hypotheses to be combined nonlinearly, and can be shown to have a generally better performance than the original linear-combination approach in either theory or practice. The post-classification scheme provides a general pe...

In this study investigation is done on an H-bridge switched inductor base cascade multilevel DC-DC boost converter. The proposed multilevel DC-DC boost converter topology improves the conversion efficiency of traditional topology. The proposed boost converter topology is differing from the traditional topology by the addition of switched inductor circuit. The switched inductor improved the conv...

Submitted: Jun 8, 2013; Accepted: Jul 17, 2013; Published: Jul 25, 2013 Abstract: In this paper different types of converters based on different types of switching cells have been studied and designed. The analysis of each converter has been carried out. The main objective of analysis is to find out the advantages and disadvantages of each converter and to find the converter suitable for the gi...

The IDBB converter features just one controlled switch and two inductors and is able to supply a solid-state lamp from the mains providing high power factor and good efficiency. And with a careful design of the converter the filter capacitances can be made small enough so that film capacitors may be used. Thus the converter mean time between failures can be made as high as that of the solid-sta...

A new transformerless buck–boost converterwith simple structure is proposed in this study. Comparedwith the traditional buck–boost converter, the proposedbuck–boost converter’s voltage gain is squared times of theformer’s and its output voltage polarity is positive. Theseadvantages enable it to work in a wider range of positiveoutput. The two power switches of the proposed buck–boost converter ...

Growing technological challenges and soaring costs are gradually bringing the MOSFET scaling to an end. This intensifies the search of alternative technologies and computational principles. The electron spin attracts attention as a possible candidate to be used in future electron devices for complimenting or even replacing the charge degree of freedom employed in MOSFETs. The spin state is char...

The occasion of a retiring presidential address seems like a time to look back, take stock and perhaps look ahead. Institutionally, it was an honor to serve as President of the Association and I want to thank my teachers and predecessors for guidance and advice and my fellow o¢ cers and our publisher for their work and support. To all of the members who answered my calls to chair or serve on th...