房地产开发企业会计核算问题探讨

本文就房地产开发企业会计核算的现状及特点进行了分析,并提出了完善房地产开发企业会计核算规范的对策。     

基于小波神经网络的电动机变频系统故障检测的研究

文章提出应用小波分析技术提取故障特征并以模糊神经网络进行故障预测.由此建立了基于小波与神经网络的电动机变频调速故障的智能检测系统,并用MATLAB进行仿真,证明了该方法对电动机变频系统故障的检测是有可行性的.     

浅议教师资源会计核算

在市场经济中,人力费源会计正日益受到重视,教职工费源是人力费源的重要组成部分,加强教职工费源的会计核算,正确确认和计量教职工费源,促进在教育改革的当今。学校完善会计核算,加强人力费本与物力费本的协调,将教职工费源投入与产出加以量化,重视教职工费源的开发利用。提高学校经济效益和社会效益。     

提高引伸计期间核查精度的方法

介绍了在实验室范围内可供参考的简易可行的引伸计期间核查方法,该方法通过用引伸计对同一拉伸试样弹性段进行拉伸测试,用对比测得的弹性模量E来确认引伸计的使用情况,为确认引伸计使用精度状况提供了参考。     

Computation of approximate optimal policies in a partially observed inventory model with rain checks

This paper proposes a new methodology to solve partially observed inventory problems. Generally, these problems have infinite-dimensional states that are conditional distributions of the inventory level. Our methodology involves linearizing the state transitions via unnormalized probabilities. It then uses an appropriate functional basis to represent the state. Considering the speed and stability of computations, we choose truncated Chebyshev polynomials as the basis. We use Fast Fourier Transforms along with an appropriate discretization of inventory levels to speed up the computations. These main ideas are blended to obtain an iterative algorithm to solve a partially observed inventory model with rain checks. In this model, the inventory manager (IM) does not know the inventory level when it is positive. Otherwise, the IM fully observes it. This model provides a context to illustrate our methodology, which applies to other such models. Although this model has been studied mathematically in the literature, the use of our algorithm provides a numerical approximation of the optimal order quantities. These are compared to the orders released under a base mean-stock policy, where the IM replaces the unobserved inventory level with its mean and applies the well-known base stock policy. We show numerically that the optimal order quantity is very close to the base mean-stock order quantity, when the variance of the inventory distribution is small. When the mean of the inventory distribution is large, the optimal order quantity is more than the base mean-stock quantity, and it is the other way around when the mean is small or negative. These insights are explained via uncertainty and information effects and their interplay. We expect this interplay to show up in other partially observed inventory models.     

某型飞机冷气系统常见故障分析及附件维护

冷气系统是飞机机械系统的重要组成,主要承担着刹车、抛放减速伞、应急放起落架等工作.维护好军用飞机的冷气系统是保证飞机飞行安全的重要环节.该文将针对某型飞机在使用和维护过程中,主冷气系统漏气、抛放阻力伞故障以及充气漏气等常见故障进行了原因分析及排除,并针对冷气系统的主要附件维护提出了注意事项,目的是为各型军用飞机冷气系统实际维护提供参考.     

利用CASSSME实现GIS数据质量检查的方法研究

从分析数据加工中的错误来源入手,在研究数据特性的基础上,介绍了利用SME软件进行基础地理信息数据质量检查的方法,具体阐述了房屋要素和其他要素穿越检查方案的编写过程,利用真实数据检验编写的检查方案,从运行结果看,利用南方CASSSME质检模块进行数据质量检查的方法是可行的,结果是正确的。     

现浇砼梁钢管脚手架的验算及施工

扣件式钢管脚手架构造简单,安装方便,在恒、活载作用下稳定性比较好,在目前桥梁施工特别是现浇梁施工中仍然广泛应用的一种支架,现就使用前在组合恒、活载作用下对模板支架、立杆地基承载力及门洞进行验算。安装时须注意的事项及安装顺序。支架安装完成后,应做预压试验,以检查支架的压缩量及稳定性。     

荧光增白剂消光系数检测准确性的影响因素

本文以C．I．荧光增白剂351（荧光增白剂CBS）为例,通过实验讨论了影响荧光增白剂消光系数检测准确性的因素以及对各因素的控制方法。通过浓度与吸光度的标准曲线分析,确认了荧光增白剂CBS消光系数检测的最佳吸光度范围为1．1以内;通过对环境和滞留时间的考察发现,检测环境应充分避光且检测应控制在1小时以内完成;通过标准偏差分析,建议标准HG／T3726—2010中检测消光系数的称样量由0．1g更改为0．2g;通过考察溶液温度变化与消光系数的关系发现,检测溶液每升高1℃消光系数降低1．2;建议检测用仪器设备应严格进行定期检查以控制检测质量。