查询词典 logistic

Stability and the approximate bifurcation periodic solution of a class of general Logistic model with time delay are discussed.

讨论了具有时滞的广义Logistic模型分支周期解的存在性、稳定性及近似分支周期解。

Independent sample test and multivariate logistic regression analysis were used to study the independent risk predictors of ARAS.

并以显著ARAS为自变量，行Logistic多元回归分析，明确ARAS的独立危险因素。

Data collected from 451 employees were analyzed using logistic re- gression and results show that dissatisfaction with compensation,need for power,and organization hier- archy level were all relevant factors to individuals choices of engaging in either variation innovation or reorientation innovation .

本研究认为，组织中所有员工都有可能成为变革代理人以积极推进组织创新，基于此，本文探讨员工个体参与不同类型的组织创新的动力来源及其影响模式。

The third party logistics as a new mode become the necessity choice for logistic management in supply chain management.

第三方物流作为新兴的物流方式，是供应链管理过程中的物流管理的必然选择。

Logistic Center, Assembling flow of material, information and capital, is important in the economic development today.

集物流、信息流和资金流于一体的物流中心，在现代社会经济发展中具有重要的作用。

For KISC, the technology shall firstly use high-phosphorus ironstone efficiently which can not completed by the current picking technology or blast furnace process, to greatly reduce ironstone cost that occupies the most proportion of iron and steel production cost, easy cost pressure caused by international and domestic shortage of production materials, induce transportation risk, to assuringly supply KISC with a great deal of cheap raw materials and create great economic profit; Secondly it shall promote KISC to update its products, especially high-added-value products of lowest phosphorus and lowest sulfur, to enhance its ability to adapt market and gain profit; Thirdly it shall improve technical and economic indexes of blast furnace and converter, and be helpful for efficient blast smelting and less-slag melting of converter process; Furthermore the technology shall greatly promote the stable operation of melting process and the control of the production of high-temperature and high-quality casting blank, to realize efficient continuous casting and continuous casting and rolling to improve KISCs production intensification; Finally the technology shall distribute melting functions and optimize production processes, to improve the auto-control of melting and continuous casting, to realize the integrated management of technology, equipment, production organization and management, logistic management, and production running of smelting, continuous casting and rolling.

对昆钢而言，该技术的应用，首先可以经济有效地实现现有采选技术及高炉冶炼所不能完成的高磷铁矿石的利用，大幅度降低在钢铁生产中占绝大比例的原料成本，缓解国际国内生产原料紧张而造成的成本压力，为昆钢创造巨大的经济效益；其次可以促进昆钢产品的升级换代特别是高附加值超低磷、超低硫钢种的开发，增强昆钢的市场适应能力和效益创造能力；再次可促进高炉及转炉技术经济指标的改善，降低生产成本，且利于转炉生产实现高效吹炼和少渣冶炼；此外，该工艺能显著提高冶炼环节的平稳顺行及高温、高质量铸坯生产的可控程度，可实现高效连铸和连铸连轧生产，提高昆钢生产的集约化程度；最后，该工艺能实现冶炼功能的分工和生产流程的优化，可提高昆钢炼钢与连铸生产的计算机自动控制程度，有效促进炼钢—连铸—轧钢的工艺、设备、生产组织和管理、物流管理、生产操作等环节的一体化管理的实现。

In the paper,we investigate the asymptotic behavior of three ecological models and the Hopf bifurcation for a class of Logistic model with time delays.

本文共分四个部分研究了三类生态模型解的渐近性和一类时滞Logistic模型的Hopf-分支问题。

We discuss asymptotically best linear unbiased estimators of the Logistic population based on selected order statistics and give the formula of computing the ABLUE, the variance and the covariance of the ABLUE in limit, and properties of the ABLUE, and so on. We give the optimum chosen of spacing which is the ABLUE with maximum asymptotic relative efficiency based on complete sample when selected order statistics number is less than 10, and obtain its maximum asymptotic relative efficiency.

讨论基于Logistic总体Ⅱ型截尾样本的若干个样本分位数的总体分布参数的近似最佳线性无偏估计；给出了该近似最佳线性无偏估计的计算公式，估计方差与协方差的极限表达式及估计量的大样本性质等；给出了全样本，样本分位点个数固定，但不超过10情形下，使上述近似最佳线性无偏估计有最大相对联合估计效率时，样本分位数选取法及最大相对联合估计效率；为大样本情形下，该近似最佳线性无偏估计的应用提供了理论依据。

Methods 134 patients with type 2 diabetes were determined by pure tone audiometry, auditory brainstem responseand distortion product otoacoustic emissions. The risk factors of hearing loss were analyzed by logistic regression analysis. Results 41.8% patients had hearing loss.

测定134例2型糖尿病患者的纯音测听、脑干听觉诱发电位和畸变产物诱发电位结果，回顾性分析听力正常组和异常组的临床资料，并应用多因素logistic回归分析探讨影响听力的危险因素。

Discriminative parameters were identified using logistic regression, and the probabilities of having P. aeruginosa bacteremia were calculated.

采用logistic回归鉴定有差异的参数，并计算患有铜绿假单胞菌菌血症的可能性。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。