质量指标

To compare the image quality of the three sequences in two groups by One-Way ANOVA and T Test. The qualitative assessment standards include clarity, artifacts, signal uniformity, the conspicuity of enhanced vein and the observable grade of intrahepatic venous branchs. The quantitative assessment standards include SNR and CNR of intrahepatic portal vein and hepatic veins. Furthermore, the anatomy and variations of the intrahepatic portal vein and hepatic veins are statistical analysed.

通过方差分析和T检验分别对A、B组三个序列的图像质量进行比较，评定标准包括清晰度、伪影、信号均匀性、静脉强化程度及肝内静脉分支显示级数等定性指标和肝内门静脉、肝静脉的SNR(Signal-Noise Ratio，信噪比)及CNR(Contrast-Noise Ratio，对比度噪声比)等定量指标。

From the microbiological index including cfu,mpn and germina amount,this paper analyzes the examination of microbiological index and the quality of meat food in our coun- try.

从食品微生物指标：菌落总数、大肠菌群和致病菌三项入手，对我国肉类食品的微生物指标检测情况及其产品质量进行分析。

Meanwhile, suggestions for the government have been proposed.Thus to guarantee the habitability of housing and the acceptability of rent for migrant workers in various ways.

通过对本文调查对象的研究，可以看到在我们调查的范围中，住房质量和居住稳定性指标确实对农民工住宅选择有显著的影响；此外，本文研究中反映社会网络的指标对农民工住宅选择没有显著影响。

The riv- er′s health status can be determined through a holistic appraisal of rivers and their surrounds.Five components of the rivers health include: water quality, aquatic life, physical form, hydrology and streamside zone.Many methods and criteria are available to assess the status of river ecosystem, and this review focuses on RIVPACS,AUSRIVAS,IBI,RCE,ISC,RHS and RHP, which are classified into the pred...

阐述了河流健康状况的内涵，尝试从理化参数、生物指标、形态结构、水文特征、河岸带状况5个方面表征河流的健康状况；并从预测模型法和多指标评价法角度对河流无脊椎动物预测和分类系统、澳大利亚河流评价计划、生物完整性指数、RCE清单、溪流状态指数、河流生态环境调查、河流健康计划等河流健康状况的评价方法进行评述；在探讨美国、英国、澳大利亚、南非等国家河流健康状况评价开展情况的基础上，指出我国迫切需要构建一套适合国情的河流健康状况评价体系，从河流健康角度评价国内主要河流的生态环境质量，并为广泛开展的河流恢复项目提供基础数据和决策依据。

Combining the experimental results and theoretical analysis, the following work has been accomplished.(1) Reasons of the decrease of interelectrode capacitance and the increase of discharge gap caused by the powder suspended in dielectric fluid are explained. And the mechanism that surface quality of workpiece improved by powder-mixed EDM is analyzed from this viewpoint.(2) The variation regularity of the percentage of silicon on the machined surface of workpiece has been summarized according to the experiment results when silicon powder was added into the working fluid. The entropy is introduced to explain the reasons for this variation regularity by thermodynamics.(3) The dimensional accuracy is greatly influenced by the overcut resulting from discharge gap and electrode wear in practice application. Empirical formulas for the overcut in EDM and powder-mixed EDM are established based on the experimental results using the ternary linear regressive method in this paper.(4) The influence of main factors on the machined surface characteristics has been evaluated based on the orthogonal experimental design method.

通过一系列普通电火花加工与混粉电火花加工的对比实验，运用工艺实验和理论分析相结合的方法，重点做了以下工作：(1)探讨了粉末颗粒导致极间电容减小、放电间隙增大的原因，并从这个角度解释了混粉电火花加工可以改善工件表面质量的机理；(2)以混合硅粉的电火花加工为例，实验得出峰值电流和脉冲宽度对加工表面层成分中硅元素含量的影响规律，并引入熵的概念从热力学的角度对硅元素含量变化的原因寻找了理论依据；(3)在实际加工中，由于粉末的加入使放电间隙变大，这使得混粉电火花加工的尺寸精度难以控制，本文利用三元线性回归的方法，在实验数据的基础上，建立了两种电火花加工过切量的计算公式；(4)将正交试验法应用于混粉电火花加工实验研究，并通过对实验指标极差的直观分析，得出各电参数对加工指标影响的敏感程度。

MAIN OUTCOME MEASURES: To observe the interrelationship between items of QOL of patients following laryngectomy.

主要观察指标：观察喉切除术后患者生活质量各指标间的关系。

Methods (1) The device for study was determined by comparing the fluorescent images obtained by laser scanning confocal microscope and CCD fluorescent microscope respectively. The mercury-arc lamp of fluorescent microscope was studied to value its possibility to be used as the irradiation light source. Various image analyzing and processing methods were compared to determine which one was the best to be applied in this study.

(1)实验系统的建立：分别利用激光扫描共聚焦显微镜和CCD荧光显微镜采集ECV 304细胞的DCF荧光图像，并比较两者的成像质量，实验可操作性等技术指标；主要测量输出功率、功率稳定性以及光斑直径这三个指标，考察荧光显微镜的高压汞灯作为本研究中照射光源的可行性；比较并选择合适的荧光图像的分析与处理方法。

Through studying the main characteristics in 1D space,the key information could be used to classify and evaluate the samples according to the principle of similarity.

实例研究表明：投影寻踪模型得到的各指标权重客观地反映了各评价指标之间的影响关系，用于纸和纸板质量分类与评价切实可行，分析结果和其它方法具有较好的一致性，并更为合理和可靠。

Through studying the main characteristics in ID space,the key information could be used to classify and evaluate the samples according to the principle of similarity.

实例研究表明：投影寻踪模型得到的各指标权重客观地反映了各评价指标之间的影响关系，用于纸和纸板质量分类与评价切实可行，分析结果和其它方法具有较好的一致性，并更为合理和可靠。

Evaluation each period of green food business enterprise piece, habitat monitor area, real object total amount and sale sum Be importation index sign; Again selection each year green food export sum is output index sign, to 1999-2006 year China green food development level of time sequence data calculation result enunciation: Green the food export's ability exaltation trend, which is a DEA for 2004-2006 years valid of age, but further analysis after detection: Green food yield 2002-2006 year average growth 29.2%, but export rate didn't°yet break 13%, and every year export rate growth not arrive a percentage point, and the demand of international market at continuously extension, particularly west nation green food consume growth the rate is in above 20%, this has already result in produce and foreign trade mutually separate, can't orientation open of market economy of request, this elucidation our country green food export development medium of strategy existence very great problem, For further expanding the international market, the analysis of market-orientation should be strengthened, the product quality and enterprise credit should be improved and the proper strategy and way to access market should be taken in order to break through the green barrier and keep up the competition ability which can be continuously developed.

评价将各期的绿色食品企业个数，产地监测面积，实物总量和销售额作为输入指标；再选取各年绿色食品出口额为输出指标，对1999——2006年中国绿色食品发展水平的时间序列数据计算结果表明：绿色食品出口能力呈现逐年提高趋势，2004——2006年是DEA有效的年份，但进一步分析之后发现：绿色食品产量2002—2006年平均增长29.2%，而出口率还没有突破13%，而且每年出口率增长不到1个百分点，且国际市场的需求量在不断扩大，尤其西方国家绿色食品消费增长率在20%以上，这已造成生产与对外贸易相分离，不能适应开放的市场经济的要求，这说明我国绿色食品出口发展中的战略存在很大问题，需要进一步开拓国际市场，加强市场定位分析，提高产品质量和企业信誉，并选择适宜的进入战略及方式，以利于冲破绿色壁垒和保持持续发展的竞争能力。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。