An algorithm has been obtained for solving the packing problem of placing convex polygons with different shapes and sizes into a rectangular vessel by simulating the elastic mechanics process,it is pointed out that,ba...An algorithm has been obtained for solving the packing problem of placing convex polygons with different shapes and sizes into a rectangular vessel by simulating the elastic mechanics process,it is pointed out that,based on this algorithm,a sysem of computer-aided design can be developed for arranging two-dimensional materials.展开更多
针对光伏发电存在供电多、供电集中等问题,提出一种基于需求响应的光伏发电系统电量平衡调度算法。基于需求响应,结合分层调度思想,构建双层电量平衡调度算法。结合粒子群优化(particle swarm optimization,PSO)算法与Pareto支配关系,...针对光伏发电存在供电多、供电集中等问题,提出一种基于需求响应的光伏发电系统电量平衡调度算法。基于需求响应,结合分层调度思想,构建双层电量平衡调度算法。结合粒子群优化(particle swarm optimization,PSO)算法与Pareto支配关系,设计多目标粒子群优化(multi-objective particle swarm optimization,MOPSO)算法,完成双层调度求解,实现光伏发电系统电量平衡调度。测试结果表明,该算法的供电量仅为8208 k W·h,并且分散在01:00—02:00、06:00—07:00、11:00—15:00和20:00—23:00的4个时段,其变异系数超过1.5,供电更加分散;用户日内实际用电功率仅为125 k W,方差仅为4.63,并且分布在120~125 k W的较小范围内,其整体分布比较均匀,说明设计算法的调度性能良好。展开更多
If we use Littlewood-Paley decomposition, there is no pseudo-orthogonality for Ho¨rmander symbol operators OpS m 0 , 0 , which is different to the case S m ρ,δ （0 ≤δ 〈 ρ≤ 1）. In this paper, we use a spec...If we use Littlewood-Paley decomposition, there is no pseudo-orthogonality for Ho¨rmander symbol operators OpS m 0 , 0 , which is different to the case S m ρ,δ （0 ≤δ 〈 ρ≤ 1）. In this paper, we use a special numerical algorithm based on wavelets to study the L p continuity of non infinite smooth operators OpS m 0 , 0 ; in fact, we apply first special wavelets to symbol to get special basic operators, then we regroup all the special basic operators at given scale and prove that such scale operator’s continuity decreases very fast, we sum such scale operators and a symbol operator can be approached by very good compact operators. By correlation of basic operators, we get very exact pseudo-orthogonality and also L 2 → L 2 continuity for scale operators. By considering the influence region of scale operator, we get H 1 （= F 0 , 2 1 ） → L 1 continuity and L ∞→ BMO continuity. By interpolation theorem, we get also L p （= F 0 , 2 p ） → L p continuity for 1 〈 p 〈 ∞ . Our results are sharp for F 0 , 2 p → L p continuity when 1 ≤ p ≤ 2, that is to say, we find out the exact order of derivations for which the symbols can ensure the resulting operators to be bounded on these spaces.展开更多
In the era of big data,the ways people work,live and think have changed dramatically,and the social governance system is also being restructured.Achieving intelligent social governance has now become a national strate...In the era of big data,the ways people work,live and think have changed dramatically,and the social governance system is also being restructured.Achieving intelligent social governance has now become a national strategy.The application of big data technology to counterterrorism efforts has become a powerful weapon for all countries.However,due to the uncertainty,difficulty of interpretation and potential risk of discrimination in big data technology and algorithm models,basic human rights,freedom and even ethics are likely to be impacted and challenged.As a result,there is an urgent need to prioritize basic human rights and regulate the application of big data for counter terrorism purposes.The legislation and law enforcement regarding the use of big data to counter terrorism must be subject to constitutional and other legal reviews,so as to strike a balance between safeguarding national security and protecting basic human rights.展开更多
文摘An algorithm has been obtained for solving the packing problem of placing convex polygons with different shapes and sizes into a rectangular vessel by simulating the elastic mechanics process,it is pointed out that,based on this algorithm,a sysem of computer-aided design can be developed for arranging two-dimensional materials.
文摘针对光伏发电存在供电多、供电集中等问题,提出一种基于需求响应的光伏发电系统电量平衡调度算法。基于需求响应,结合分层调度思想,构建双层电量平衡调度算法。结合粒子群优化(particle swarm optimization,PSO)算法与Pareto支配关系,设计多目标粒子群优化(multi-objective particle swarm optimization,MOPSO)算法,完成双层调度求解,实现光伏发电系统电量平衡调度。测试结果表明,该算法的供电量仅为8208 k W·h,并且分散在01:00—02:00、06:00—07:00、11:00—15:00和20:00—23:00的4个时段,其变异系数超过1.5,供电更加分散;用户日内实际用电功率仅为125 k W,方差仅为4.63,并且分布在120~125 k W的较小范围内,其整体分布比较均匀,说明设计算法的调度性能良好。
基金Supported by the Doctoral programme foundation of National Education Ministry of China
文摘If we use Littlewood-Paley decomposition, there is no pseudo-orthogonality for Ho¨rmander symbol operators OpS m 0 , 0 , which is different to the case S m ρ,δ （0 ≤δ 〈 ρ≤ 1）. In this paper, we use a special numerical algorithm based on wavelets to study the L p continuity of non infinite smooth operators OpS m 0 , 0 ; in fact, we apply first special wavelets to symbol to get special basic operators, then we regroup all the special basic operators at given scale and prove that such scale operator’s continuity decreases very fast, we sum such scale operators and a symbol operator can be approached by very good compact operators. By correlation of basic operators, we get very exact pseudo-orthogonality and also L 2 → L 2 continuity for scale operators. By considering the influence region of scale operator, we get H 1 （= F 0 , 2 1 ） → L 1 continuity and L ∞→ BMO continuity. By interpolation theorem, we get also L p （= F 0 , 2 p ） → L p continuity for 1 〈 p 〈 ∞ . Our results are sharp for F 0 , 2 p → L p continuity when 1 ≤ p ≤ 2, that is to say, we find out the exact order of derivations for which the symbols can ensure the resulting operators to be bounded on these spaces.
文摘In the era of big data,the ways people work,live and think have changed dramatically,and the social governance system is also being restructured.Achieving intelligent social governance has now become a national strategy.The application of big data technology to counterterrorism efforts has become a powerful weapon for all countries.However,due to the uncertainty,difficulty of interpretation and potential risk of discrimination in big data technology and algorithm models,basic human rights,freedom and even ethics are likely to be impacted and challenged.As a result,there is an urgent need to prioritize basic human rights and regulate the application of big data for counter terrorism purposes.The legislation and law enforcement regarding the use of big data to counter terrorism must be subject to constitutional and other legal reviews,so as to strike a balance between safeguarding national security and protecting basic human rights.
