就业与社会稳定的关联性探析

就业与社会稳定的正相关：就业的保障功能的发挥、激励功能的发挥、融入功能的发挥、协作功能的发挥，都有助于实现社会稳定。就业存在的问题与社会稳定的负相关：失业人员大量存在、就业弱势群体大量存在、就业权益缺失，都影响着社会稳定。     

The one‐warehouse multiretailer problem with an order‐up‐to level inventory policy

We consider a two‐level system in which a warehouse manages the inventories of multiple retailers. Each retailer employs an order‐up‐to level inventory policy over T periods and faces an external demand which is dynamic and known. A retailer's inventory should be raised to its maximum limit when replenished. The problem is to jointly decide on replenishment times and quantities of warehouse and retailers so as to minimize the total costs in the system. Unlike the case in the single level lot‐sizing problem, we cannot assume that the initial inventory will be zero without loss of generality. We propose a strong mixed integer program formulation for the problem with zero and nonzero initial inventories at the warehouse. The strong formulation for the zero initial inventory case has only T binary variables and represents the convex hull of the feasible region of the problem when there is only one retailer. Computational results with a state‐of‐the art solver reveal that our formulations are very effective in solving large‐size instances to optimality. © 2010 Wiley Periodicals, Inc. Naval Research Logistics, 2010     

建立维和警察心理调控机制之我见

联合国维和警察是一个特殊的职业群体，所处的工作和生活环境艰苦、恶劣、危险。维和警察面对这种超出常规的精神压力，出现各种各样的心理问题是必然的。维和警察的心理问题仅仅依靠维和警察个人自我调节是远远不够的，必须建立一套有效的调控机制来预防和治疗其心理问题，维护好他们的心理健康。     

非平衡机制下激光与等离子体相互作用机理

采用三温度热化学非平衡模型,考虑了激光能量在空气等离子体中的共振吸收和逆韧致吸收机制,用有限差分NND格式对控制方程组进行数值离散.对等离子体点火过程进行耦合计算,并研究了不同入射激光强度条件下等离子体吸收波的形成和演化机制,讨论了粘性扩散效应对等离子体吸收波的影响.结果表明,在初始温度300K,大气压力条件下,生成ZND模式的LSD波所需最小激光强度为5.0×106 W/cm2.     

浅谈教师对数学学业不良生的影响

本文通过教师的信念、课堂教学、教师的问题意识三个方面的探讨，来论述教师对数学学业不良生的影响，希望通过教师的作用有效促进数学学业不良生的转化。     

Capacity expansion and cost efficiency improvement in the warehouse problem

The warehouse problem with deterministic production cost, selling prices, and demand was introduced in the 1950s and there is a renewed interest recently due to its applications in energy storage and arbitrage. In this paper, we consider two extensions of the warehouse problem and develop efficient computational algorithms for finding their optimal solutions. First, we consider a model where the firm can invest in capacity expansion projects for the warehouse while simultaneously making production and sales decisions in each period. We show that this problem can be solved with a computational complexity that is linear in the product of the length of the planning horizon and the number of capacity expansion projects. We then consider a problem in which the firm can invest to improve production cost efficiency while simultaneously making production and sales decisions in each period. The resulting optimization problem is non‐convex with integer decision variables. We show that, under some mild conditions on the cost data, the problem can be solved in linear computational time. © 2016 Wiley Periodicals, Inc. Naval Research Logistics 63: 367–373, 2016     

The stochastic joint replenishment problem: A new policy,analysis, and insights

In this study, we propose a new parsimonious policy for the stochastic joint replenishment problem in a single‐location, N‐item setting. The replenishment decisions are based on both group reorder point‐group order quantity and the time since the last decision epoch. We derive the expressions for the key operating characteristics of the inventory system for both unit and compound Poisson demands. In a comprehensive numerical study, we compare the performance of the proposed policy with that of existing ones over a standard test bed. Our numerical results indicate that the proposed policy dominates the existing ones in 100 of 139 instances with comparably significant savings for unit demands. With batch demands, the savings increase as the stochasticity of demand size gets larger. We also observe that it performs well in environments with low demand diversity across items. The inventory system herein also models a two‐echelon setting with a single item, multiple retailers, and cross docking at the upper echelon. © 2006 Wiley Periodicals, Inc. Naval Research Logistics, 2006     

基于改进QPSO-NN的冗余机械臂逆运动学算法

针对某种冗余机械臂逆运动学求解的问题,提出了一种基于改进量子粒子群神经网络的求解算法。以冗余机械臂末端位姿为输入,经神经网络求得其逆解;针对神经网络输出结果误差较大的问题,把神经网络求初值加入初始化的粒子群中,通过基于Metropolis准则改进量子粒子群算法,避免了量子粒子群算法的早熟现象;以关节坐标经正向运动学求得的末端位姿和期望位姿的误差为适应度函数,对机械臂关节坐标迭代寻优。仿真结果表明该方法结合了神经网络算法的快速性和改进量子粒子群算法的精确性,满足求冗余机械臂逆运动学问题的速度和精度要求。     

加强建筑消防设计审核工作之思考

结合自己的工作实践 ,分析建筑消防设计审核工作的重要性 ,并对如何加强建筑消防设计审核工作提出了看法。     

刚体定点转动欧拉运动学方程的群表示法

目前研究刚体定点转动欧拉运动学方程大多用矢量的方法,过程繁琐.本文拟用群理论理解刚体的定点转动.利用SO_(3)群的左不变形式,作用于左不变向量场d/dt得到欧拉运动学方程,并且给出计算李代数的左不变形式A(?)dA的一个简化方法.