Multi-group pin power reconstruction method based on colorset form functions

A multi-group pin power reconstruction method that fully exploits nodal information obtained from global coarse mesh solution has been developed.It expands the intra-nodal flux distributions into nonseparable semi-analytic basis functions,and a colorset based form function generating method is proposed,which can accurately model the spectral interaction occurring at assembly interface.To demonstrate its accuracy and applicability to realistic problems, the new method is tested against two benchmark problems,including a mixed-oxide fuel problem.The results show that the new method is comparable in accuracy to fine-mesh methods.

The Relationship of Between Fuzzy Power Groups and Fuzzy Quotient Groups

In this paper, we extend the concept of fuzzy quotient groups. The structuresof fuzzy power groups and fuzzy quotient groups are discussed. The relationship betweenfuzzy power groups and fuzzy quotient groups are considered.

Power Aggregation Operators of Simplified Neutrosophic Sets and Their Use in Multi-attribute Group Decision Making

The simplified neutrosophic set(SNS) is a useful generalization of the fuzzy set that is designed for some practical situations in which each element has different truth membership function, indeterminacy membership function and falsity membership function. In this paper, we develop a series of power aggregation operators called simplified neutrosophic number power weighted averaging(SNNPWA) operator, simplified neutrosophic number power weighted geometric(SNNPWG) operator, simplified neutrosophic number power ordered weighted averaging(SNNPOWA) operator and simplified neutrosophic number power ordered weighted geometric(SNNPOWG) operator. We present some useful properties of the operators and discuss the relationships among them. Moreover, an approach to multiattribute group decision making(MAGDM) within the framework of SNSs is developed by the above aggregation operators.Finally, a practical application of the developed approach to deal with the problem of investment is given, and the result shows that our approach is reasonable and effective in dealing with uncertain decision making problems.

SOLUTION OF THE RAYLEIGH PROBLEM FOR A POWER-LAW NON-NEWTONIAN CONDUCTING FLUID VIA GROUP METHOD

An investigation is made of the magnetic Rayleigh problem where a semi_infinite plate is given an impulsive motion and thereafter moves with constant velocity in a non_Newtonian power law fluid of infinite extent. The solution of this highly non_linear problem is obtained by means of the transformation group theoretic approach. The one_parameter group transformation reduces the number of independent variables by one and the governing partial differential equation with the boundary conditions reduce to an ordinary differential equation with the appropriate boundary conditions. Effect of the some parameters on the velocity u(y,t) has been studied and the results are plotted.

Linguistic Single-Valued Neutrosophic Power Aggregation Operators and Their Applications to Group Decision-Making Problems

Linguistic single-valued neutrosophic set(LSVNS)is a more reliable tool,which is designed to handle the uncertainties of the situations involving the qualitative data.In the present manuscript,we introduce some power aggregation operators(AOs)for the LSVNSs,whose purpose is to diminish the influence of inevitable arguments about the decision-making process.For it,first we develop some averaging power operators,namely,linguistic single-valued neutrosophic(LSVN)power averaging,weighted average,ordered weighted average,and hybrid averaging AOs along with their desirable properties.Further,we extend it to the geometric power AOs for LSVNSs.Based on the proposed work;an approach to solve the group decision-making problems is given along with the numerical example.Finally,a comparative study and the validity tests are present to discuss the reliability of the proposed operators.

无人机辅助MEC系统中基于最优SIC顺序的能耗优化方案

在基于上行非正交多址接入(NOMA)的无人机(UAV)辅助移动边缘计算(MEC)系统中,NOMA的连续干扰消除(SIC)顺序已成为限制上行任务卸载链路传输性能的瓶颈,为降低系统能耗,对SIC顺序进行了讨论,提出了联合信道增益与任务时延约束的最优SIC顺序。在满足设备给定任务时延、设备最大发射功率约束以及UAV轨迹的约束下,基于最优SIC顺序提出了最小化系统能耗的问题。由于该问题是个复杂的非凸问题,采取交替优化的方法求解该优化问题,以实现功率分配和UAV轨迹的优化;利用匹配理论,提出了低复杂度算法来得到不同时隙的最优设备分组。仿真结果表明,与其他SIC顺序相比,最优SIC顺序能够在相同的任务时延约束下实现更小的系统能耗;所提的低复杂度设备分组算法能够得到最优设备分组。

多无人机辅助NOMA网络的联合无线资源分配算法

为了满足高容量需求和通信质量,提出了一种多无人机(Unmanned Aerial Vehicle, UAV)辅助下行非正交多址(Non-Orthogonal Multiple Access, NOMA)网络的联合定位、用户调度、用户配对和功率分配优化算法。在基站位置固定的网络场景下,推导出通用最优用户配对和功率分配策略闭式解。针对多小区场景,将无人机的位置优化问题转化为一个局部合作博弈问题,并证明所提博弈是一个精确的潜在博弈,它至少有一个纯策略纳什均衡(Pure Strategy Nash Equilibrium, PNE),且最优的纳什均衡(Nash Equilibrium, NE)能够最大化网络和速率。设计了一种集中分布式学习算法寻找最优PNE。仿真结果表明,该算法优于现有方案,显著提高了网络效用。

An Iterative Power Allocation Algorithm for Group-wise Space-Time Block Coding Systems

An iterative transmit power allocation (PA) algorithm was proposed for group-wise space-time block coding (G-STBC) systems with group-wise successive interference cancellation (GSIC) receivers. Group-wise interference suppression (GIS) filters are employed to separate each group's transmit signals from other interferences and noise. While the total power on all transmit symbols is constrained, all transmit PA coefficients are updated jointly according to the channel information at each iteration. Through PA, each detection symbol has the same post-detection signal to interference-and-noise ratio (SINR). The simulation results verify that the proposed PA algorithm converges at the equilibrium quickly after few iterations, and it achieves much lower bit error rates than the previous single symbol SIC PA and the fixed ratio PA algorithms for G-STBC systems with GSIC receivers .

面向用户多样化业务需求的多波束卫星系统动态资源分配算法

多波束卫星通信系统由于其高吞吐量和高资源利用率而受到广泛关注.已有研究主要考虑多波束卫星通信系统的信道或功率分配问题,但较少考虑用户分组和动态资源分配策略的联合优化设计,导致系统性能受限.此外,现有研究往往假设固定的波束覆盖半径,忽略了波束覆盖半径可变性对波束覆盖性能提升的影响.本文研究了多波束卫星通信系统中的用户分组和资源分配问题,提出了一种两阶段资源管理方案.针对动态和多样化的用户服务需求,首先设计一种基于Voronoi图的迭代用户分组算法以实现分组之间的负载均衡,然后将子信道和功率分配问题建模为系统平均效用函数最大化问题.为解决该问题,将每个波束视为一个智能体,采用一种基于多智能体深度Q网络(Deep Q Network,DQN)的算法来确定子信道和功率分配策略.仿真结果表明,与K-均值用户分组方案相比,本文所提出的基于Voronoi图的迭代用户分组算法对应的用户组负载差异值可降低49.2%,体现了本文所提算法在实现用户组间负载均衡方面的优势.此外,本文所提两阶段资源管理方案与现有文献中所提算法相比,系统所提供容量与用户需求差值可降低83.43%,体现了本文所提算法在实现系统资源高效利用及用户服务需求保障方面的性能优势.

含高比例光伏的配电网分组协调电压控制策略

电压越限成为限制光伏最大接入量的重要因素,为解决大规模光伏并网所导致电压越限问题,文章提出了含高比例光伏的配电网分组协调电压控制策略。首先,根据光伏接入节点对配电网电压灵敏度不同,提出了光伏逆变器分组协调控制思想;然后,光伏逆变器组内以容量利用比和功率因数为一致性变量进行电压控制,组间通过协调控制确保关键节点电压收敛至设定值1.05 p.u.;最后,通过算例仿真验证所提控制策略能有效地抑制配电网电压越限,避免不必要的有功削减,同时在负荷、光伏波动时具有较强的鲁棒性。

国家出资公司集团治理法律规制范式的分类构建

国家出资公司几无例外地处于集团化营运中,且因市场经济、公共利益目标差异而产生治理结构分类设定的需求。但《公司法》并未直接设定针对公司集团的调整规则,也未回应国家出资公司的公共利益需求。鉴于此,结合旨在分离市场经济、公共利益目标作用场域的“分类改革”政策,在尊重《公司法》路径依赖的基础上,有必要对国有出资公司集团治理的法律规制范式作分类构建。公益类集团宜以“单个企业”范式肯定母公司高度控制权的合理性,对子公司权力进行正面列举以保障集团剩余控制权归属于母公司,并通过成本核算、收益补偿来修复子公司独立人格之损伤;商业一类宜遵守《公司法》下的“分离实体”范式,保障集团内成员公司独立意志,以法人人格否认制度事后救济成员公司被侵害的独立人格;商业二类应以“分离实体”范式为主,分离核算承担公共使命之特殊业务。

基于多维群堆管理的仪控业务标准化体系构建

江苏核电有限公司(以下简称“江苏核电”)是国内首家成立独立仪控处室的核电厂,在跨堆型的群堆化生产管理模式下,探索建立仪控业务标准化体系是落实企业精细化管理的迫切需要。基于群堆化管理理念,江苏核电打破不同堆型、不同生产单元的专业壁垒,推动仪控业务管理由“一体单堆模式化”向“多维群堆精细化”转变,通过顶层规划,以创建仪控部门处级管理层矩阵式管理、科组层多中心多节点辐射式管理模式和仪控专业融合管理制度为基础,采用人才培养“引育用管”、承包商管理“三化”“三抓”、大修实施“四个到位”和“四件法宝”、日常运维“三个管控”等管理方法,实现仪控人、财、物管理的多维度业务标准化,并以智能化平台进行实施管控和通过实践来健全业务管理流程,成功构建了精细化的仪控业务标准化管理体系,提升了仪控系统设备运行的可靠性和核电厂的运营效率。仪控业务标准化管理体系及构建实施的经验,可在同行核电厂维修管理、设备管理等业务领域复制和推广。

关于一道抽象代数题的推广

用初等的方法证明了:设G是有限群,p是G的最小素因子,若对任意n∣|G|都有|{x∈G∣x^(n)=1}|≤(p-1)n,则G是循环群.推广了教材[1]第1.4节的习题3.

基于虚拟仿真技术的高职电力技术专业群实训体系重构探究

电力作为我国支柱产业之一,在新时代背景下,对“双高”人才的需求量与日俱增,而构建基于虚拟仿真技术的高职电力技术专业群实训体系能够更好地满足当前的人才培养要求。虚拟仿真技术在电力技术专业群及实训体系的应用过程中,应精准对接电力产业核心岗位集群,注重真实工作场景的实际需求和应用,面向行业需求并以行业需求为导向,将虚拟仿真技术融入到基础实训、专业实训以及综合实训三个层次,整合校企实训教学资源,建立“三场合一”实践教学基地,提升教学质量,重视教师队伍持续建设,并全面评估体系优缺点。

On the Power Performance of Test Statistics for the Generalized Rayleigh Interval Grouped Data

In this paper, the weighted Kolmogrov-Smirnov, Cramer von-Miss and the Anderson Darling test statistics are considered as goodness of fit tests for the generalized Rayleigh interval grouped data. An extensive simulation process is conducted to evaluate their controlling of type 1 error and their power functions. Generally, the weighted Kolmogrov-Smirnov test statistics show a relatively better performance than both, the Cramer von-Miss and the Anderson Darling test statistics. For large sample values, the Anderson Darling test statistics cannot control type 1 error but for relatively small sample values it indicates a better performance than the Cramer von-Miss test statistics. Best selection of the test statistics and highlights for future studies are also explored.

民国县政权力的结构变化与内部权斗——以1946年湖北省应山县陈汉雄案为中心

1946年位于鄂北地区的应山县发生了一起县长陈汉雄捕杀县参议员黄克的恶性案件。通过对案件所留原始档案的梳理可以看出,彼时县长权力呈现集中与加强的趋势,县参议会与党团力量本应与县府权力相互监督,而实际则是县长集行政、立法、司法、监督权于一身,使得参议会等难以对县长权力进行有效监督与制约,二者甚至在县域内进行权力的角逐,陈汉雄案鱼死网破式的结局,正是这一矛盾激化的表现。管窥此案可知,国民政府的制度设计与地方执政现实相距甚远,其在内战压力下的制度异化,也使其“地方自治”离民主之路愈走愈远。

多波束低轨卫星用户分组与资源分配算法

与地面网络设施相比,卫星的机载资源十分有限,面对用户地理位置及流量需求分布的不均匀,传统的固定分组和固定资源分配方式缺乏灵活性,限制了系统容量。基于地理位置的用户分组,利用相控阵天线产生的具有灵活方向和波束宽度的动态波束和跳波的时间分片技术,可以实现对卫星资源的合理分配和高效利用。在低轨多波束卫星场景下,利用P中心问题模拟用户分组问题算法对卫星用户进行分组,实现用户平均信息速率的最大化。基于分组结果提出一套适用于用户分组方案的灵活资源分配算法,并在最后加入一个组间资源调配的过程,以避免空闲资源的浪费。经过实验数据模拟和性能评估,所提算法比传统的用户分组和资源分配算法更能够有效提升系统吞吐量,降低用户平均排队时延。