In this paper,we consider the periodic solution problems for the systems withunbounded delay,and the existence,uniqueness and stability of the periodic solution are dealtwith unitedly.First we establish the suitable d...In this paper,we consider the periodic solution problems for the systems withunbounded delay,and the existence,uniqueness and stability of the periodic solution are dealtwith unitedly.First we establish the suitable delay-differential inequality,then study seperatelythe problems of periodic solution for the systems with bounded delay,with unbounded delayand the Volterra integral-dlfferentlal systems with infinite delay by using the character of matrixmeasure and the asymptotic fixed point theorem of poincaré’s periodic operator in the differentphase spaces.A series of simple criteria for the existence,uniqueness and stability of thesesystems are obtained.展开更多
The continuing emergence of sudden financial crises and the bankruptcy of Big banks audited by the‘Big Four’auditors confirms that the external audit quality(EAQ)always remains insufficient compared to the desired q...The continuing emergence of sudden financial crises and the bankruptcy of Big banks audited by the‘Big Four’auditors confirms that the external audit quality(EAQ)always remains insufficient compared to the desired quality.The quality weakness is due either to the bad audit company choice,although their sizes,or to the disrespect of the good audit rules.Because there is a lack of comparative studies in the framework of conventional and Islamic banks,this paper aims to compare the impact of EAQ on the financial performance(FP)of 180 conventional banks and 180 Islamic banks.FP and EAQ variables are collected from 56 countries over the period(2010-2020).To overcome the mystery of the best EAQ selection based on its impact on FP,this paper relied on the GLS estimator.Consequently,this paper concluded that the EAQ affected the conventional banks’FP,but it improved that of Islamic banks with a moderate impact.展开更多
文摘In this paper,we consider the periodic solution problems for the systems withunbounded delay,and the existence,uniqueness and stability of the periodic solution are dealtwith unitedly.First we establish the suitable delay-differential inequality,then study seperatelythe problems of periodic solution for the systems with bounded delay,with unbounded delayand the Volterra integral-dlfferentlal systems with infinite delay by using the character of matrixmeasure and the asymptotic fixed point theorem of poincaré’s periodic operator in the differentphase spaces.A series of simple criteria for the existence,uniqueness and stability of thesesystems are obtained.
文摘The continuing emergence of sudden financial crises and the bankruptcy of Big banks audited by the‘Big Four’auditors confirms that the external audit quality(EAQ)always remains insufficient compared to the desired quality.The quality weakness is due either to the bad audit company choice,although their sizes,or to the disrespect of the good audit rules.Because there is a lack of comparative studies in the framework of conventional and Islamic banks,this paper aims to compare the impact of EAQ on the financial performance(FP)of 180 conventional banks and 180 Islamic banks.FP and EAQ variables are collected from 56 countries over the period(2010-2020).To overcome the mystery of the best EAQ selection based on its impact on FP,this paper relied on the GLS estimator.Consequently,this paper concluded that the EAQ affected the conventional banks’FP,but it improved that of Islamic banks with a moderate impact.
