In this paper, we present a dynamic information-structure mutual exclusion algorithm for distributed systems whose informationstructure evolves with time as sites learn about the state of the system through messages. An interesting feature of the algorithm is that it adapts itself to heterogeneous or fluctuating traffic conditions to optimize the performance (the number of messages exchanged). ...

In this paper we analyze the impact of mutual coupling on MIMO channel capacity, considering its effect on both, signal and thermal noise. We calculate noise correlation matrix in the multi-antenna system with closely spaced antennae by applying the Nyquist’s thermal noise theorem. Then, we employ noise correlation matrix in channel capacity formula, that enables the identification of thermal n...

the purpose of this study is to investigate the relationshipbetween the mutual funds flows and the return of stock index using 65mutual funds in the period of 2008 to 2011.in this study, the dailychanges of the total number of units of mutual funds and the changesof the total values of units of mutual funds were considered as acriteria for the net of mutual funds flows. the results of johansen ...

Many investors confine their mutual fund holdings to a single fund family, either for simplicity or through restrictions placed by their retirement savings plan. We find evidence that mutual fund returns are more closely correlated within than between fund families. As a result, restricting investment to one fund family leads to a greater total portfolio risk than diversifying across fund famil...

Mutual health organizations (MHOs) are voluntary membership organizations providing health insurance services to their members. MHOs aim to increase access to health care by reducing out-of-pocket payments faced by households. We used multiple regression analysis of household survey data from Ghana, Mali and Senegal to investigate the determinants of enrollment in MHOs, and the impact of MHO me...

This study aims to measure the performance of actively-managed Saudi Arabia mutual funds during COVID-19 outbreak and examines potential impact growth on measured performance. The authors apply Fama French five-factor model risk-adjusted a selected sample 79 funds. Mutual in outperformed market with significant positive alpha 0.15%. panel data regression technique identified new confirmed cases...

Business process design and enterprise information system (IT system) design are often not well aligned, which leads to problems at runtime caused by neglecting the mutual impact of business processes and IT systems. Simulation is a promising approach to support the alignment of business process design and IT system design by impact prediction. Currently, the Palladio approach does not include ...