Showing papers by "University of Macau published in 1993"
TL;DR: In this paper, a second-order switched-capacitor (SC) antialiasing decimating filter with a threefold sampling rate reduction, which has been realized in a 1.8- mu m CMOS double-poly technology, is proposed.
Abstract: An optimum switched-capacitor (SC) decimating filter is capable of achieving a high input sampling frequency while the time period for the setting of the operational amplifiers can be maximized with respect to the lower output sampling frequency. Thus, for the same speed of the operational amplifiers, the oversampling ratio of the input signal in optimum SC decimating filters is much larger than in conventional SC filtering circuits, yielding a significant relaxation of the continuous-time prefiltering requirements. This is demonstrated by considering the design of a second-order SC antialiasing decimating filter with a threefold sampling rate reduction, which has been realized in a 1.8- mu m CMOS double-poly technology. The experimental evaluation of prototype samples confirms the expected operation of the circuit. >
23 citations
TL;DR: The authors found that high EFCAs expect more acceptance, are more optimistic, and have greater self-investment in the outcome, and mixed support was obtained for the prediction that situational differences in prior expectancy of acceptance moderate the effects of rejection.
Abstract: This experiment, with 167 introductory psychology subjects, successfully replicated and extended to a wider array of affective, evaluative, and cognitive reactions, previous research on how would-be helpers cope when their help is rejected. It again supported the thesis that violation of perceived expectancy of acceptance mediates the effects of rejection. Using an individual difference measure of generalized self-perceptions of being a person who is sufficientlyefficacious and caring (acronym, EFCA) to help others, we found support for the predictions that high EFCAs would react more strongly than low EFCAs on “proximal” forms of coping, but relatively less strongly on “confrontational” (future-oriented) forms. Our rationale was that high EFCAs expect more acceptance, are more optimistic, and have greater self-investment in the outcome. Mixed support was obtained for the prediction that situational differences in prior expectancy of acceptance moderate the effects of rejection.
14 citations
3 citations