Recent work has demonstrated that several trust and reputation models can be exploited by malicious agents with cyclical behaviour. In each cycle, the malicious agent with cyclical behaviour first regains a high trust value after a number of cooperations and then abuses its gained trust by engaging in a bad transaction. Using a game theoretic formulation, Salehi-Abari and White have proposed th...

It is common to assume in business cycle analysis that the capital stock is homogenous and constant in aggregate value. We explore the alternative concept that capital is heterogeneous, and whether it exhibits cyclical changes. A multiperiod model of investment implies that acquisition of specific components of capital responds to changes in relative interest rates, and we further show that the...

Daily measurements of finger joint size, grip strength, and body weight have been made throughout 2 complete menstrual cycles in 7 female patients with rheumatoid arthritis and 6 healthy female controls. Sine wave analysis showed significant individual cyclical rhythms (p less than 0.05) for finger joint size (5 patients, 4 controls), nude weight (5 patients, 3 controls), and grip strength (4 p...

In this paper, I analyze the business cycle properties of remittances and output series for three pairs of countries: the United States–Mexico, the United States–El Salvador, and Germany–Turkey. Using an unobserved components state-space model (via the BeveridgeNelson decomposition), I decompose the remittances and output series into stochastic permanent and cyclical components. I then use the ...

We present an analysis of the timing data of the pulsar B1642−03, collected over a span of 30 years between 1969 and 1999. During this interval, the timing residuals exhibit cyclical changes with amplitude varying from 15 ms to 80 ms and spacing of maxima varying from 3 years to 7 years. Interpretation of these observed cyclical changes in terms of free precession suggests a wobble angle of abo...