浅析新会计制度下医院会计信息存在的问题及审计对策

医院会计信息是医院财务工作中的最终产品,其性质的好坏直接影响到社会资源的配置与利用效率的高低。本文就我国新会计制度下医院会计信息的现状及存在的问题进行分析,并从审计监督的角度提出了相应的改进策略和建议。     

油品二元掺混黏度预测模型评价研究

为较好的控制和预测石油化工过程中油品掺混后的黏度,获得对于不同工艺情形的精度较高的掺混黏度预测模型,以黏度比为工况划分标准,相对误差的绝对值及工程允许误差为评价准则,评价了8种二元油品掺混黏度的预测模型。得到了各个模型在全黏度比1～106内的黏度预测特性。计算分析了各个模型的预测精度。按黏度比,对掺混黏度预测做了模型的优选。结果表明,Arrhenius、Bingham、Kendall等基本模型的预测结果波动及误差较大,不推荐使用,黏度比在1～103时优选Chevron模型,黏度比在104～105时优选Cragoe模型,而黏度比在105～106时各模型都超出允许范围,且波动及偏差较大,预测效果不好,亟待开发出一种适用模型。     

GPSRTK技术应用特点与优化布测方法

随着全球定位系统（GPS）技术的快速发展,RTK测量技术也日益成熟,RTK测量技术时下风靡全国。主要是因为其测量模式比以往的测量方式更为方便简单、测量速度、精度也更快更高了,通过RTK技术能够在野外实时得到厘米级定位精度的测量方法。对测量效率有着很大的提升。与常规测量方法相比,RTK技术有着其无可比拟的优越性。     

CPF算法在GNSS-INS列车组合定位系统中的应用

为了提高GNSS-INS列车组合定位系统的定位精确性,拟将一种性能优良的非线性CKF算法引入到传统粒子滤波(PF)框架中,形成改进的CPF算法。结合某列车控制系统提供的样本数据进行仿真,与传统的PF算法相比,CPF算法滤波效果好,定位误差小,更能满足列车运行的非线性环境要求。结果表明:CPF算法在GNSS-INS列车组合定位系统中具有良好的工程实用价值。     

基于BP算法的垃圾焚烧过程温度控制研究

医疗垃圾含有大量的病毒、细菌及化学药剂，是一种对环境危害极大的危险废物；而且目前国内医疗垃圾焚烧系统的自动化程度不高，垃圾处理水平与国外仍有很大差距。故本文就此分析系统中的医疗垃圾焚烧炉的工作过程，采用一种基于神经网络控制理论的温度控制方法，旨在开发出一种安全、有效可行的智能控制方案，不仅提高我国的医疗垃圾焚烧系统的自动化水平，而且满足国内城市医疗垃圾集中处理的需要。我们对此进行仿真实验，实验证明这种建立于神经网络模型上的控制手段可以适应于复杂的工业控制领域。     

基于Arnold变换和采样理论的置乱技术研究

本文介绍了基于Arnold变换和采样理论的置乱技术,并详细给出了两种技术的置乱恢复程序,最后将二者结合,提出了一种双重置乱方案。     

化选矿硫酸浸出稀土工艺研究

化选矿经硫酸浸出,在合适的酸度、温度、反应时间条件下,稀土浸出率为90%。     

多媒体产品的可用性设计指南

多媒体产品的设计应在重视产品功能性的同时重视其可用性。可用性体现了从用户角度感受到的产品质量,是决定产品成败的关键因素之一。为了提高多媒体产品的可用性质量,必须在产品的设计开发过程中运用可用性工程方法,其中包括使用多媒体的可用性设计指南,该文将综合介绍目前提出的多媒体产品的可用性设计指南。     

The Progress of a Microbeam Facility in the Institute of Plasma Physics

The progress of a microbeam facility in the institute of Plasma Physics was discussed in this paper.This kind of equipment can supply single-particle beam which may be implanted into cells in micrometer-radius and measured by a new outstanding detector among global microbeam systems.Measurements by some plain targets showed that the highest current after the accelerator tube can be larger than 20μA ,the H2^ current before the second bending magnet is near 0.9μA ,the current after the second bending magnet is near 0.8μA,and the current of the beam line(after a 2-mm diameter aperture)is near 0.25nA which is enough for the single-particle microbeam experiment.It took scientists 3 months to do their microbeam experiment after setting up the qccelerator beam line and get the microbeam from this equipment.Two pre0collimators were installed between the 2-mm diameter aperture and the collimator to survey the beam.Tracks on the CR39 film ectched in the solution of NaOH showed that the beam can go through the collimator including a 10μm diameter aperture and the 3.5μm thick vacuum sealing film(Mylar).A new method,which is called optimization of the beam quality,was put forward in this paper,in order to get smaller diameter of beam-spot in microbeam system.     

The Experiment of Obtaining Micron Beam in the Single-Particle Microbeam Facility of the Institute of Plasma Physics

The Experiments, methods and results of obtaining micron beam in the Microbeam Facility of the Institute of Plasma Physics were discussed in this paper. The H2^ beam was accelerated by the Van de Graa/f electrostatic accelerator, and the collimator at the end of the beam line is a 60μm thick stainless steel chip. And as a result, particle tracks on the solid track probes (CR39 film) etched in the solution of NaOH showed that the beam can go through the collimator with a small aperure (2000, 300, 55, 30, or 10μm) and 3.5μm thick vacuum film(Mylar). Besides the CR39 method, the beam was measured by an energy spectrum detector after the 10μm diameter aperture and the 3.5 μm thick vacuum film too.