Time-varying parametric modelling and time-dependent spectral characterisation with applications to EEG signals using multi-wavelets

A new time-varying autoregressive (TVAR) modelling approach is proposed for nonstationary signal processing and analysis, with application to EEG data modelling and power spectral estimation. In the new parametric modelling framework, the time-dependent coefficients of the TVAR model are represented using a novel multi-wavelet decomposition scheme. The time-varying modelling problem is then reduced to regression selection and parameter estimation, which can be effectively resolved by using a forward orthogonal regression algorithm. Two examples, one for an artificial signal and another for an EEG signal, are given to show the effectiveness and applicability of the new TVAR modelling method

Analytical study of the frequency response function of a nonlinear spring damper system

A spring damper system with a nonlinear damping element is investigated using the Volterra series method to study the system frequency response function (FRF) characteristics. The relationship between the FRF and the characteristic parameters of the nonlinear damper is determined to produce an analytical description for the system FRF. Simulation studies are used to verify the theoretical analysis. These results provide an important basis for the FRF based analysis and design of nonlinear spring damper systems in the frequency domain

Perspective from the Ed Tech Field

Dr. Karen Billings discusses how working at a non-profit trade association has provided a unique perspective on how schools are using technology to support the teaching and learning process

Ultra high speed image processing techniques

Packaging techniques for ultra high speed image processing were developed. These techniques involve the development of a signal feedthrough technique through LSI/VLSI sapphire substrates. This allows the stacking of LSI/VLSI circuit substrates in a 3 dimensional package with greatly reduced length of interconnecting lines between the LSI/VLSI circuits. The reduced parasitic capacitances results in higher LSI/VLSI computational speeds at significantly reduced power consumption levels

The Dramatistic Implications of Burke\u27s Guilt Redemption Cycle in the Donald Sterling Communication Crisis

In the spring of 2014, the National Basketball Association (NBA) was rocked by a scandal involving racism. Donald Sterling, the owner of the Los Angeles Clippers, one of the NBA’s thirty basketball teams, provoked a national controversy when Sterling made a series of disparaging statements about African Americans. Repercussions ranged from a staged silent protest by Clipper players to Sterling being banned for life from the NBA. After his ban, Sterling tried to rectify the damage done by his racially charged comments. He embarked on a public relations campaign to resuscitate his image and regain control of his team ownership. However, Sterling’s campaign strategy was hopelessly flawed: He alternated between playing the victim, the apologist, and the aggressor, while never fully encompassing any of these roles. The failure of Sterling’s damage control was not only his continued exile from the NBA ranks, but considerable injury to his own reputation and status in society. Consequently, the result of Sterling’s efforts to clear his name was a public relations disaster, which did nothing to redeem Sterling in the eyes of society. This thesis is designed to investigate the shortcomings of Sterling’s apologies and the implications of his controversial comments. To accomplish this goal, it utilizes Kenneth Burke’s guilt-redemption cycle. With terms associated with this process, this essay demonstrates that Sterling’s expression of regret—his “sacrifice”—was not sufficient to appease his critics in the National Basketball Association (NBA) or in American society at large. To explain the complexity of the Sterling controversy, this essay unfolds in four parts. First, the essay discusses the background of Sterling’s remarks. Second, this essay will explain Burke’s guilt redemption cycle and its associated concepts. Third, this essay will apply these concepts to analyze Sterling’s comments in four acts. Finally, this essay will conclude with closing commentary about the Sterling saga and its future implications