Recently, Islamic banks have been presented as an alternative to conventional banks. Indeed, Islamic banks have proved their worth during the 2009 crisis. They are known like an ethical bank. In Tunisia, only three Is...Recently, Islamic banks have been presented as an alternative to conventional banks. Indeed, Islamic banks have proved their worth during the 2009 crisis. They are known like an ethical bank. In Tunisia, only three Islamic banks exist. Even the conventional banks are interested to offer Islamic banking products and services; they are called Islamic banking window. This paper aims to determine the level of acceptance of Islamic banking window on Tunisian consumers and the impact of the social professional category on it. The research questions as follows： Are the consumers familiar with the financial Islamic products？ Did they perceive any differences between conventional and Islamic financial products？ What are the levels of acceptance of an Islamic banking product offered by a conventional bank？ In this respect, a questionnaire was administrated to a sample size of 120 people constituted of 54% men and 46% women from Tunis City. Three types of social professional category are found： 62% employee, 32% senior, and 6% profession. The data were processed by SPSS 21. The results showed that the majority of the respondents have a lack of knowledge of the Islamic banking products. The majority of the respondents don＇t see any differences between the product name of conventional and Islamic banking products. The acceptance level of an Islamic banking product offered by a conventional bank is very satisfying, 53% of the respondents are certain to purchase an Islamic banking product from a conventional bank and 42% are not sure. Only 5% refused.展开更多
针对在阵列孔径、阵元数目、最小阵元间距等多约束条件下的稀布矩形平面阵列天线优化问题,提出了基于改进型灰狼优化(improved grey wolf optimizer,IGWO)算法和窗函数加权的稀布矩形平面阵列天线综合方法。首先,利用Tent混沌映射、非...针对在阵列孔径、阵元数目、最小阵元间距等多约束条件下的稀布矩形平面阵列天线优化问题,提出了基于改进型灰狼优化(improved grey wolf optimizer,IGWO)算法和窗函数加权的稀布矩形平面阵列天线综合方法。首先,利用Tent混沌映射、非线性收敛因子、优势狼动态置信策略和对立学习策略对灰狼优化(grey wolf optimizer,GWO)算法进行改进,增加算法的种群多样性和跳出局部最优的能力。然后,利用窗函数对阵列单元进行加权,生成位置分布矩阵,减少稀疏矩阵优化时间,提高优化效率。最后,利用位置分布矩阵生成稀疏阵列,再运用IGWO算法进行多约束条件的稀布优化。为验证所提方法的有效性进行了仿真实验,实验结果表明,本文方法可以有效提高阵列天线的性能,降低峰值旁瓣电平,对于解决在多约束条件下的阵列分布问题,具有一定的工程意义和参考价值。展开更多
按照网络安全法等法律法规要求,应依法实施网络安全等级保护制度,深化网络安全等级保护政策和标准落实,健全完善网络安全保护工作机制,确保网络安全等级保护等级测评工作有效开展。文章分析了Windows服务器面临的安全问题及原因,按照等...按照网络安全法等法律法规要求,应依法实施网络安全等级保护制度,深化网络安全等级保护政策和标准落实,健全完善网络安全保护工作机制,确保网络安全等级保护等级测评工作有效开展。文章分析了Windows服务器面临的安全问题及原因,按照等级保护计算环境服务器(三级)相关测评项要求,以Windows Server 2019为研究对象,结合等级测评工作实践提出了Windows服务器安全加固方法,能帮助单位完成操作系统等级保护测评工作,提升操作系统层安全防护能力。展开更多
文摘Recently, Islamic banks have been presented as an alternative to conventional banks. Indeed, Islamic banks have proved their worth during the 2009 crisis. They are known like an ethical bank. In Tunisia, only three Islamic banks exist. Even the conventional banks are interested to offer Islamic banking products and services; they are called Islamic banking window. This paper aims to determine the level of acceptance of Islamic banking window on Tunisian consumers and the impact of the social professional category on it. The research questions as follows： Are the consumers familiar with the financial Islamic products？ Did they perceive any differences between conventional and Islamic financial products？ What are the levels of acceptance of an Islamic banking product offered by a conventional bank？ In this respect, a questionnaire was administrated to a sample size of 120 people constituted of 54% men and 46% women from Tunis City. Three types of social professional category are found： 62% employee, 32% senior, and 6% profession. The data were processed by SPSS 21. The results showed that the majority of the respondents have a lack of knowledge of the Islamic banking products. The majority of the respondents don＇t see any differences between the product name of conventional and Islamic banking products. The acceptance level of an Islamic banking product offered by a conventional bank is very satisfying, 53% of the respondents are certain to purchase an Islamic banking product from a conventional bank and 42% are not sure. Only 5% refused.
文摘针对在阵列孔径、阵元数目、最小阵元间距等多约束条件下的稀布矩形平面阵列天线优化问题,提出了基于改进型灰狼优化(improved grey wolf optimizer,IGWO)算法和窗函数加权的稀布矩形平面阵列天线综合方法。首先,利用Tent混沌映射、非线性收敛因子、优势狼动态置信策略和对立学习策略对灰狼优化(grey wolf optimizer,GWO)算法进行改进,增加算法的种群多样性和跳出局部最优的能力。然后,利用窗函数对阵列单元进行加权,生成位置分布矩阵,减少稀疏矩阵优化时间,提高优化效率。最后,利用位置分布矩阵生成稀疏阵列,再运用IGWO算法进行多约束条件的稀布优化。为验证所提方法的有效性进行了仿真实验,实验结果表明,本文方法可以有效提高阵列天线的性能,降低峰值旁瓣电平,对于解决在多约束条件下的阵列分布问题,具有一定的工程意义和参考价值。
文摘按照网络安全法等法律法规要求,应依法实施网络安全等级保护制度,深化网络安全等级保护政策和标准落实,健全完善网络安全保护工作机制,确保网络安全等级保护等级测评工作有效开展。文章分析了Windows服务器面临的安全问题及原因,按照等级保护计算环境服务器(三级)相关测评项要求,以Windows Server 2019为研究对象,结合等级测评工作实践提出了Windows服务器安全加固方法,能帮助单位完成操作系统等级保护测评工作,提升操作系统层安全防护能力。
