烧结机蒸汽系统新老余热管网并网改造

针对烧结机新老蒸汽系统各自独立，使用效率低，不能充分发挥效能的状态，提出了蒸汽系统新老余热管网并网改造，经过一年多的运行，取得了显著的效果。     

数控机床顾客满意度提升措施的研究

根据数控机床生产厂的实际需要,设计了数控机床顾客满意度测评程序.对测评实例进行了分析,根据分析结果,进行了数控机床顾客满意度改进提升措施的研究.提出了以顾客为中心的生产经营理念,加强服务质量,同时利用信息技术,提升数控机床顾客满意度.     

Shorter Communication: Evaluating Tests for Increasing Intensity of a Poisson Process

The problem of testing the hypothesis of a constant intensity against the alternative of an increasing intensity function in a nonhomogeneous Poisson process is studied, and six wellknown tests are considered. Three of the six are shown to have desirable power-function properties, whereas the other three do not have the properties. In fact, the tests without the desirable properties should not be used, nor should any nonparametric test be used.     

Consolidation considering increasing soil column radius for dredged slurries improved by vacuum preloading method

Soil column is often investigated in the improvement of dredged slurries. Different from the smear zone, the soil column forms gradually and has extremely low permeability. This study presents an analytical solution for soil consolidation considering the increasing radius of the soil column and time-dependent discharge capacity. Based on the solution, the influence of the radius' increase on the consolidation behavior is found significant when the soil column has low permeability and large final radius, and the increase of formation time can lead to the increase of consolidation speed and final consolidation degree.     

枪管渐速膛线数控电解加工方法的研究

针对现有膛线电解加工方法存在的只能加工固定缠距膛线、不能加工渐速膛线等问题,根据膛线电解加工方法和工作原理,提出枪管渐速膛线数控电解加工方法。通过对渐速膛线数控电解加工方法相关理论的分析,确定渐速膛线数控电解加工方法原理方案。新的渐速膛线数控电解加工方法不仅解决了在同一台设备上加工不同类型和规格膛线的问题,而且简化了机床结构,为枪管膛线电解加工提供了新的加工方法和设备,对枪管膛线的研究和发展具有重要的作用和实用价值。     

Effect of Structural Parameters on the Thermal Stress of a NiFe2O4-Based Cermet Inert Anode in Aluminum Electrolysis

Inert anode has been a hot issue in the aluminum industry for many decades. With the help of FEA(finite element analysis) software ANSYS,a model was developed to simulate the thermal stress distribution working condition of an inert anode. To reduce its thermal stress,the effect of some parameters on the thermal stress distribution was investigated,including the anode height,the anode radius,the hole depth,the hole radius,and the radius of inner chamfer and outer chamfer. The results showed that in the actual working condition of an inert anode,there existed a large axial tensile stress near the tangent interface between the anode and bath,which was the major cause of anode breaking. Increasing the anode height and reducing the hole depth properly seemed to be beneficial for the stress distribution. With the increase of anode radius,the stress distribution became better first and then deteriorated,the reasonable value was between 0.045 to 0.06m. The hole radius had a significant effect on the stress and a smaller radius would reduce the thermal stress. The effect of the radius of the inner chamfer and the outer chamfer was less than other parameters.     

不同施肥方法对缓释尿素的肥效及氮素利用率的影响

以水稻和玉米为供试作物进行盆栽试验和田间试验。结果表明,水稻和玉米的增产效应均表现为;缓释尿素基追施结合处理>普通尿素基追施结合处理>缓释尿素一次性基施处理>普通尿素一次性基施处理。处理间差异达显著或极显著水准。相比之下,一次性基施改为基追施结合的增产幅度要优于尿素缓效化的肥效。两种作物对尿素的氮素利用率范围值分别为54.8%~70.1%(水稻)和53.6%~59.1%(玉米),其规律与上述肥效相吻合,也是各处理增产的内在原因。在水稻和玉米生产中应推荐在施用PK肥基础上,缓释尿素85%作基肥、15%作追肥这一施肥方法。     

基于神经网络的软件可靠性模型的实现与分析

本文针对软件可靠性工程中模型选择比较麻烦的问题，提出了用神经网络构建通用的可靠性增长模型，在实现该模型的基础上，利用三组数据进行试验，并与三个分析模型的结果作了比较，得出了比较好的结论。     

企业产值与利润的变化关系

本文针对企业经济管理和效益考核实践，借助“本量利分析”的基本原理，探讨了企业产值与利润的变化关系及其规律，为企业的科学管理和预测提供一种方法。     

An approach for the Bayesian estimation in the case of ordered piecewise constant failure rates

In this paper we present an approach for the Bayesian estimation of piecewise constant failure rates under the constraint that the constant value of the failure rate in an interval of time is greater than a function of its values in the prior intervals. We apply this approach to the estimation of piecewise constant failure rates for conditional IFR, IFRA and NBU distributions. The prior distribution for the failure rate in each interval is specified through gamma distributions with functions of the failure rate values corresponding to the rest of the intervals as location parameters. Using this approach the prior distribution parameters have interpretations through prior means and variances of the values of the piecewise constant failure rate. The posterior distributions and expected values can be found in terms of gamma functions, without the necessity of numerical integrations. We apply this approach to a model for reliability estimation when two operational modes exists and the number of failures in each operational mode is unknown. Finally a numerical example is presented in which simulations of posterior densities are carried out.