University of Macau

About: University of Macau is a education organization based out in Macao, Macau, China. It is known for research contribution in the topics: Population & Control theory. The organization has 6636 authors who have published 18324 publications receiving 327384 citations. The organization is also known as: UM & UMAC.

Microstrip Monopole Antenna With Enhanced Bandwidth Using Defected Ground Structure

Abstract: In this letter, a double U-shaped defected ground structure (DGS) is proposed to broaden impedance bandwidth of a microstrip-fed monopole antenna. The antenna structure consists of a simple trapezoid monopole with a DGS microstrip feedline for excitation and impedance bandwidth broadening. Measurement shows that the antenna has 10-dB return loss from 790 to 2060 MHz, yielding 112.4% impedance bandwidth improvement over that of traditional design.

Understanding the features of performance measurement system: a literature review

Abstract: Purpose – The purpose of this paper is to identify the required factors that can be considered necessary in conceptualizing the features of an efficient and effective performance measurement system (PMS) that is appropriate in the modern organizational setting. The field of PMS is heavily researched and yet certain fundamentals of PMS, in particular the precise meaning and application of the features of PMS: data, measuring attributes consisting of measures, metrics and indicators, and methods of measurement remain unclear. Design/methodology/approach – The paper uses a systematic approach in reviewing and examining existing PMS and non-PMS articles that focus on the features for measurement from 1990 (January) to 2012 (November). Further, citation analysis was used to support the review as well-cited articles are considered well-read by researchers, and hence they should have sufficient impact in the academic community. Findings – The outcomes of this review contribute and update existing literature on P...