白酒产业转型升级路径分析研究——以泸州为例

白酒产业是泸州市特色优势产业,为泸州经济社会发展做出了重要贡献。进入“十四五”时期,泸州市白酒产业面临白酒产业政策调整、新冠肺炎疫情、中美贸易争端以及中国加快构建“双循环”新发展格局等机遇和挑战。为探究新形势下泸州市白酒制造业转型升级路径,本研究通过梳理文献、深入调研、座谈等方法,从行业发展的角度入手,系统梳理相关文献,对泸州白酒产业现状、面临形势进行了分析,并在此基础上提出了创新发展、绿色发展、融合发展三个方面的建议。

辽宁省锦州地区寒潮气候特征、路径和类型分析

利用1971-2010年辽宁省锦州地区4个气象观测站的逐日最低气温资料,对影响锦州地区的寒潮气候特征、路径和环流形势进行了分析,并特别对2006-2010年的寒潮过程进行了天气分析.分析结果表明,锦州地区西部出现寒潮的次数要比南部和东北部多,且10月和11月为寒潮发生最密集的月份;锦州地区北部寒潮发生的时间比南部和东北部开始早,结束晚;年平均寒潮次数为2.6次,逐年寒潮次数呈下降趋势,这与当前全球气候变暖是相一致的;影响锦州地区的寒潮分为东北、西北、偏西路径,从影响强度上看,东北和西北路径较剧烈,降温幅度较偏西路径稍大;影响锦州地区寒潮天气的环流形势分为横槽型、冷涡型、一槽一脊型和小槽发展型,其中以横槽型最多;通过对比分析发现,寒潮暴发前1～2 d,锦州地区各观测站气温普遍回升6～8℃.

Correlation and path coefficient analysis for phenotypic traits of noble scallop Chlamys nobilis

In April of 2006, a base population of the noble scallop Chlamys nobilis was established by collecting parental breeders from the stocks in Wushi, Zhanjiang. In December of 2006, 200 individuals were randomly sampled from the base population and subjected for correlation and path coefficient analysis. It was found that there were statistically significant phenotypic correlations among the traits （P 〈 0.01）. Total weight was significantly and positively correlated with the shell length （r = 0.934 3）, shell height （r = 0.895 9）, shell width （r = 0.899 1 ）, muscle weight （r = 0.882 0） and shell weight （r = 0.937 9）, respectively. Shell length, shell width, muscle weight, shell height and shell weight had positive and direct effects on the total weight, with values of 0.397 1, 0.321 9, 0.172 1, 0.089 6 and 0.066 9, respectively. Shell length, shell width and muscle weight had higher direct effects on the total weight than shell height and shell weight. A combined evaluation of correlation, direct effects and indirect effects showed that direct selection for shell length, shell width, muscle weight, shell height and shell weight would be effective to improving the total weight. It was concluded that these traits could be regarded as the selection criteria in breeding programs of the species.

An analytical method to calculate station evacuation capacity

The major objective of this work was to calculate evacuation capacity and solve the optimal routing problem in a given station topology from a network optimization perspective where station facilities were modelled as open finite queueing networks with a multi-objective set of performance measures. The optimal routing problem was determined so that the number of evacuation passengers was maximized while the service level was higher than a certain criterion. An analytical technique for modelling open finite queueing networks, called the iteration generalized expansion method(IGEM), was utilized to calculate the desired outputs. A differential evolution algorithm was presented for determining the optimal routes. As demonstrated, the design methodology which combines the optimization and analytical queueing network models provides a very effective procedure for simultaneously determining the service level and the maximum number of evacuation passengers in the best evacuation routes.

Accurate Calculation of Equilibrium Reduced Density Matrix for the System-Bath Model:a Multilayer Multiconfiguration Time-Dependent Hartree Approach and its Comparison to a Multi-Electronic-State Path Integral Molecular Dynamics Approach

An efficient and accurate method for computing the equilibriurn reduced density matrix is presented for treating open quantum systems characterized by the systern-bath model. The method employs the rnultilayer nmlticonfiguration tirne-dependent Hartree theory for imag- inary time propagation and an importance sampling procedure for calculating the quantum mechanical trace. The method is applied to the spin-boson Harniltonian, which leads to ac- curate results in agreement with those produced by the rnulti-electronic-state path integral molecular dynamics method.

Biologically inspired model of path integration based on head direction cells and grid cells

Some neurons in the brain of freely moving rodents show special firing pattern. The firing of head direction cells(HDCs) and grid cells(GCs) is related to the moving direction and distance, respectively. Thus, it is considered that these cells play an important role in the rodents' path integration. To provide a bionic approach for the vehicle to achieve path integration, we present a biologically inspired model of path integration based on the firing characteristics of HDCs and GCs. The detailed implementation process of this model is discussed. Besides, the proposed model is realized by simulation, and the path integration performance is analyzed under different conditions. Simulations validate that the proposed model is effective and stable.

Stochastic calculus with respect to G-Brownian motion viewed through rough paths

We study rough path properties of stochastic integrals of Ito's type and Stratonovich's type with respect to G-Brownian motion. The roughness of G-Brownian motion is estimated and then the pathwise Norris lemma in G-framework is obtained.

BSDEs with Jumps and Path-Dependent Parabolic Integro-differential Equations

This paper deals with backward stochastic differential equations with jumps,whose data(the terminal condition and coefficient) are given functions of jump-diffusion process paths. The author introduces a type of nonlinear path-dependent parabolic integrodifferential equations, and then obtains a new type of nonlinear Feynman-Kac formula related to such BSDEs with jumps under some regularity conditions.