多资源约束批量拆卸优化模型及算法

针对环境意识制造研究领域的废旧产品拆卸，提出了一类多资源约束批量拆卸优化方法.以拆卸时间最小为优化目标，建立了该方法的数学模型，采用CPLEX软件对模型进行求解，通过多组随机算例的仿真实验验证了该模型在求解此类批量拆卸优化问题的有效性.实验结果表明，所提方法和模型能够求解该问题的最优拆卸数量和购买数量，确定每类零部件是否进行拆卸，同时满足每个零部件的外部需求；节点的入度/出度和共有部件所占的百分数对问题求解难度有一定的影响.     

SP大侧压定宽机运动学分析

ＳＰ大侧压定宽机是我国从日本引进的先进粗轧设备。ＳＰ的工作原理与传统的立辊－水平辊轧制工艺完全不同。本文分析其机构组成、动作原理，建立了数学模型；然后根据工艺要求从轨迹图谱、运动学特性等方面分析了机构的特性，为设备的操作、维护提供了依据。     

库容有限且生产需一定时间的不允许缺货存贮模型

存贮问题的模型多数是在仓库容量有限的假设下讨论最优解,这一假设往往与实际情况不符.为此,本文讨论了确定性需求不允许缺货、生产需一定时间的存贮模型,在仓库容量有限条件下,给出了使用租借仓库时的存贮模型,并对该模型进行了讨论.     

时间域内的消光起伏光谱法

利用层模型得到消光起伏光谱及其数学表达式，光谱转折点的位置给出了颗粒的粒径信息，而光谱的深度则与颗粒系统的浓度有关．所得结果考虑了颗粒浓度对消光起伏光谱的影响．     

制造系统中能力约束下的生产批量计划优化方法

以动态库存成本与加班惩罚费用之和为优化目标,考虑单台机器的生产能力,研究生产批量计划问题。建立了数学模型,提出基于遗传算法、参数线性规划方法和启发式方法的分级混合算法。该算法采用遗传算法的流程,用遗传算子寻解批量矩阵(第1级),根据批量矩阵用参数线性规划法求解每台机器上的排产方案(第2级),用启发式方法对上述两级解进行调整使之满足约束条件。在冲压车间的排产中进行了实际应用,获得了理想的排产方案。实例验证说明,该算法有良好的收敛性,并且是有效的。     

在价格提高情况下的存储系统分析

在通知价格提高,但尚未生效时,要决定货量系统的最优订货策略,本文给出了直观简明的表述及相应证明。     

S432型浆纱机在特细号经纱上浆中的应用

分析了德国祖克S432型浆纱机的性能，并通过特细号高密织物经纱上浆，分析了该浆纱机的上浆质量．结果表明，S432型浆纱机的结构合理，性能稳定，设计制造先进，适应特细号高密织物品种开发，浆纱质量完全满足现代无梭织机高效率生产的要求．     

纳米SiO2/淀粉浆料共混物上浆性能的研究

通过改变纳米SiO2微粒对淀粉浆料的用量,采用小型浆纱机对纯棉经纱进行上浆实验,研究了无机纳米SiO2的用量对淀粉浆料上浆性能的影响.实验结果表明,在淀粉浆料中添加纳米SiO2微粒之后,对提高淀粉的浆纱性能具有显著效果,当纳米SiO2微粒与淀粉的配比量为干重比0.5%时,其浆纱耐磨性最好,毛羽降低率最高,浆纱增强率最大.     

Co-evolutionary design of discrete structures based on the ant colony optimization

In order to optimize the sizing and topology of discrete structures together and resist the combinatorial explosion of the solution space, a co-evolutionary design (CED) method based on ant colony optimization (ACO) for discrete structures is proposed. The tailored ant colony optimization for the sizing of structures (TACO-SS) and the tailored ant colony optimization for the topology of structures (TACO-TS) are implemented respectively. Theoretical analysis shows that the computation complexity of each sub-process in CED based on ACO above is polynomial and it guarantees the efficiency of this method. After the parameter settings in TACO-SS and TACO-TS are discussed, the convergence history of a sub-process is studied through an instance in detail. Finally, according to the design examples of the 10-bar and 15-bar trusses under different cases, the effectiveness of the CED based on ACO is validated and the effects of the loads and the deflection constraints on the co-evolutionary design are discussed.     

Influences of Copolymer Composition upon the Behaviors of Poly（vinyl acetate-co-acrylamide） Sizing Agents

A series of poly(vinyl acetate-co-acrylamide)copolymers with different mole ratios of vinyl acetateto acrylamide units were synthesized by emulsionpolymerization for investigating the influences of copolymercompostion upon the performance such as apparentviscosity, film behaviors, and adhesion capacity to fibers forwarp sizing operation. The mole ratios of vinyl acetate toacrylamide were varied from 0 to 4. By using animpregnated roving method, the adhesion was evaluated interms of the maximal strength and work to break of aslightly sized roving. The film behaviors included breakingstrength, breaking elongation, solution time and hygroscopiccapacity. It was found that the viscosity, adhesioncapability, glass transition temperature and film behaviorsof the copolymeric sizing agent strongly depended on themole ratio. Excessively increasing the amounts of vinylacetate or acrylamide units incorporated into the copolymericchains damages much of the performance. A favorable moleratio of vinyl acetate or acrylamide was found to be 45 : 55.Based on this mole ratio, the adhesion capability and filmbehaviors of the sizing agent reach their maximal valuessimultaneously. This demonstrates that the sizing agentshould be synthesized under this copolymer composition fromthe viewpoint of adhesion and film behaviors.