施工企业加强现场安全管理浅析

建筑施工企业加强现场安全管理的途径和方法，一是建立健全企业安全管理的组织体系和标准体系；二是做好项目安全管理的总体策划和过程的策划工作；三是加强施工现场安全管理的过程控制；四是提如安全生产责任人员的职业素质和工作技能。  

PDCA循环在工程质量控制中的应用

PDCA循环是企业推行全面质量管理在方法上的重大变革。本结合一争创“钱江杯”工程为例，坚持“强化验收，过程控制”的指导思想，运用全面质量管理的观点，介绍了有效地控制Forbo亚麻油地材这一新型建筑材料在施工中分层、鼓包、起壳等质量缺陷的方法和措施。  

房地产开发项目成本费用控制对策

房地产开发项目成本费用控制贯穿于项目建设的全过程，必须在组织、技术、经济和合同等措施上予以高度重视，通过加强成本费用管理、控制成本费用支出，在工程项目整个周期内全面监控其建造成本和营运成本，这样才能降低房地产开发项目的总成本，以达到提高房地产企业经济效益的目的。  

输送钢管的质量特性与驻厂监理的全过程控制

介绍了输送钢管的质量特点，提出了钢材及钢管质量控制方案和质量控制模式，将这种模式体现在输送铜管生产全过程质量控制和生产全过程驻厂监理实施中，保证了钢管质量和输送安全。  

番茄红素发酵培养基及发酵过程控制的研究

为提高番茄红素的发酵水平,筛选了最优的发酵培养基配方,在发酵过程中补加其所需的营养物质,得到一个稳定的配方,并对发酵过程补料进行了优化,番茄红素发酵水平达到2.4 g/L,比较稳定。  

改良A~2/O工艺在城市污水中的应用

针对石家庄市桥西污水处理厂二期工程采用的改良A2/O工艺的3种不同工况,并结合该厂污水处理工艺流程和实际运行情况进行了论述。运行结果表明:改良A2/O处理效果稳定,除磷脱氮效果明显,适宜应用于大型污水处理厂,经过二级处理,出水能够达到排放标准,三级处理后可作为中水回用。  

以过程控制为导向的采油厂质量管理体系探讨

从质量管理体系建设入手,以过程管理为基础,从开发地质、采油工艺、地面工程、井下作业、生产保障五大过程对质量管理体系建设进行策划和实施,运用正确的统计方法进行分析,找出影响原油生产的关键控制点和质量管理存在的问题,建立了质量管理体系,提高了企业管理水平。  

An np control chart for monitoring the mean of a variable based on an attribute inspection

This article proposes a new np control chart, called the np_x chart, that employs an attribute inspection (inspecting whether a unit is conforming or nonconforming) to monitor the mean value of a variable x. The distinctive feature of the np_x chart is using the statistical warning limits to replace the specification limits for the classification of conforming or nonconforming units. By optimizing the warning limits, the np_x chart usually outperforms the X¯ chart on the basis of same inspection cost. In addition, the np_x chart often works as a leading indicator of trouble and allows operators to take corrective action before any defective is actually produced.  

Economic design of an chart for short-run production

The aim of this paper is to present an economical design of an X chart for a short-run production. The process mean starts equal to μ₀ (in-control, State I) and in a random time it shifts to μ₁>μ₀ (out-of-control, State II). The monitoring procedure consists of inspecting a single item at every m produced ones. If the measurement of the quality characteristic does not meet the control limits, the process is stopped, adjusted, and additional (r-1) items are inspected retrospectively. The probabilistic model was developed considering only shifts in the process mean. A direct search technique is applied to find the optimum parameters which minimizes the expected cost function. Numerical examples illustrate the proposed procedure.