物种生灭算法(Species Explode and Deracinate Algorithm,SEDA)是一种简单、高效的群智能优化算法。为了进一步提高SEDA算法的寻优速度、解的质量,首先,通过一种无排序筛选幸存物种的递归算法,提出了基于递归筛选的SEDA算法,减少了SED...物种生灭算法(Species Explode and Deracinate Algorithm,SEDA)是一种简单、高效的群智能优化算法。为了进一步提高SEDA算法的寻优速度、解的质量,首先,通过一种无排序筛选幸存物种的递归算法,提出了基于递归筛选的SEDA算法,减少了SEDA算法的时间复杂度,提高了算法的寻优速度;其次,通过引入衍生趋势的方法,提出了基于衍生趋势的SEDA算法,提高了SEDA算法对复杂、难以寻优的优化问题解的质量。三个测试函数的仿真结果表明,改进的方法具有更小的时间复杂度,能够有效改善SEDA算法解的质量。展开更多
The formation process and composition of the acrylonitrile/urea inclusion compounds （AN/UIC） with different aging times and AN/urea molar feed ratios are studied by differential scanning calorimetry （DSC） and X-ra...The formation process and composition of the acrylonitrile/urea inclusion compounds （AN/UIC） with different aging times and AN/urea molar feed ratios are studied by differential scanning calorimetry （DSC） and X-ray diffraction （XRD）. It is suggested that DSC can determine the guest/host ratio and the heat of decomposition. Meanwhile, the guest/host ratio and heat of decomposition are obtained, which are 1.17 and 5361.53 J/mol, respec- tively. It is suggested AN molecules included in urea canal lattice may be packed flat against each other. It is found that the formation of AN/UIC depends on the aging time. XRD results reveal that once AN molecules enter urea lattice, AN/UIC are formed, which possess the final structure. When AN molecules are sufficient, the length of AN molecular arrays in urea canals increases as aging time prolonging until urea tunnels are saturated by AN.展开更多
A modified Kadomtsev-Petviashvili （mKP） equation in （3＋1） dimensions is presented. We reveal multiple front-waves solutions for this higher-dimensional developed equation, and multiple singular front-wave solutio...A modified Kadomtsev-Petviashvili （mKP） equation in （3＋1） dimensions is presented. We reveal multiple front-waves solutions for this higher-dimensional developed equation, and multiple singular front-wave solutions as well. The constraints on the coefficients of the spatial variables, that assure the existence of these multiple front-wave solutions are investigated. We also show that this equation falls the Painleve test, and we conclude that it is not integrable in the sense of possessing the Painleve property, although it gives multiple front-wave solutions.展开更多
文摘物种生灭算法(Species Explode and Deracinate Algorithm,SEDA)是一种简单、高效的群智能优化算法。为了进一步提高SEDA算法的寻优速度、解的质量,首先,通过一种无排序筛选幸存物种的递归算法,提出了基于递归筛选的SEDA算法,减少了SEDA算法的时间复杂度,提高了算法的寻优速度;其次,通过引入衍生趋势的方法,提出了基于衍生趋势的SEDA算法,提高了SEDA算法对复杂、难以寻优的优化问题解的质量。三个测试函数的仿真结果表明,改进的方法具有更小的时间复杂度,能够有效改善SEDA算法解的质量。
文摘The formation process and composition of the acrylonitrile/urea inclusion compounds （AN/UIC） with different aging times and AN/urea molar feed ratios are studied by differential scanning calorimetry （DSC） and X-ray diffraction （XRD）. It is suggested that DSC can determine the guest/host ratio and the heat of decomposition. Meanwhile, the guest/host ratio and heat of decomposition are obtained, which are 1.17 and 5361.53 J/mol, respec- tively. It is suggested AN molecules included in urea canal lattice may be packed flat against each other. It is found that the formation of AN/UIC depends on the aging time. XRD results reveal that once AN molecules enter urea lattice, AN/UIC are formed, which possess the final structure. When AN molecules are sufficient, the length of AN molecular arrays in urea canals increases as aging time prolonging until urea tunnels are saturated by AN.
文摘A modified Kadomtsev-Petviashvili （mKP） equation in （3＋1） dimensions is presented. We reveal multiple front-waves solutions for this higher-dimensional developed equation, and multiple singular front-wave solutions as well. The constraints on the coefficients of the spatial variables, that assure the existence of these multiple front-wave solutions are investigated. We also show that this equation falls the Painleve test, and we conclude that it is not integrable in the sense of possessing the Painleve property, although it gives multiple front-wave solutions.
