程度较大的

The third experiment asked observers to judge visual thresholds of posterization on a display and a printer using six series of skin tones. The results show that the thresholds among dark/middle/bright regions are device dependent.

结果显示两者皆会发生色调分离现象，影响阶调较大的是色彩复制模式的选择，暗部阶调都会受到较大程度的压缩，档案中间调的彩度值都比实际测量要高出不少。

The main results are as follows:We review the existing Monte Carlo control variates estimators of the price of Asian options and propose a new one. According to pratical needs, we define efficiency as the inverse of the product of the variance of an estimator and its computational time and make it a standard for comparisons to draw the following conclusions: Firstly, the more control variates correlate with arithmetic average Asian options, the larger is the efficiency of an estimator with these control variates, but among which the geometric average option plays the most important role; Secondly, an estimator with more control variates is better than one with less ones only when the time to maturity is long and the volatility is high.

在综合已有研究工作的基础上，本论文的主要创新成果如下：（1）我们回顾了已有的亚洲期权价格的蒙特卡罗控制变量估计，并提出了一个新的控制变量估计，且从客观实际出发，将估计值的方差和计算时间的乘积的倒数定义为效率并以它为标准比较各估计，得到以下结论：与算术平均亚洲期权相关程度越大的控制变量构成的估计的效率越大，而其中起主要作用的控制变量为几何平均亚洲期权的价格；只有在到期时间较长且标的资产的波动率较大时，元素多的多元控制变量估计比元素少的效率大。

The east of Binzhou City is always regarded as leading sector, is a ideal area for business and living quarter and is valuable and promising.

随着城市化进程和人口集聚程度的加快，房地产市场具有较大的潜在购买力，房地产价格仍有较大提升空间。

There were different contamination conditions for different PAHs components in soils. Soils in urban area were severer contaminated by the height-weight-molecule PAHs than soils in agriculture area. However, there were the similar contamination level among different usages soils for the light-weight-molecule PAHs, such as naphthalene and methylnaphthalene.

不同种类的PAHs对不同利用类型土壤的污染情况也不相同，分子量较大的多环芳烃与总PAHs污染情况相似，表现为城市用地的污染程度要明显高于其它类型土壤；但分子量较小的组分，如萘和甲基萘，在不同利用类型土壤中污染程度相近。

Of the participants perceived that they are in higher job stress. Primary stress is "inner conflict stress", and secondary is "relationship stress".

有36.6％学术主管，在工作时感受到整体工作压力大，其中以「内在冲突的压力」的感受程度较大；而「人际关系的压力」的工作压力感受较小。

Soil pH effect largerly for the number of groups of soil and the dividual number of soil animals,but the quantity of water effect lowerly in soil.

土壤pH值与土壤动物的类群数和个体数的相关程度较大，而土壤含水量与土壤动物的相关程度较低。

In the seedlings time, the content of chlorophyll decreased by the deficiency of B, but the content of chlorophyll in the high efficiency cultivar decreased slowly than that of the low efficiency cultivar. This suggested that the leaves of the high efficiency cultivar can capture more light energy and the photosynthetic rate of the high efficiency cultivar decreased slowly. In the bolting time and blooming time, after two weeks of B deficiency treatment, the content of chlorophyll in the top leaves of the high efficiency cultivar decreased, and in the late time, the content of chlorophyll decreased slowly. But, the content of chlorophyll in the bellow leaves of the two cultivars had little changes. The reason may be that B in the high efficiency cultivar distributed to the propagative organ in the late growth, and the leaves were short of B.

苗期，缺硼导致甘蓝型油菜色素含量降低，且高效品种色素含量下降的幅度小于低效品种，表明营养生长阶段，同等程度的缺硼条件下，高效品种叶片对光能的收集能力以及光合速率下降的程度相对较小；苔期和花期，在两周的缺硼处理后，高效品种上部叶色素含量依然呈下降趋势，但随着生育期的推移，其下降幅度减小；而高效品种下部叶和低效品种叶片含量变化不大，可能是甘蓝型油菜进入生殖生长阶段后，高效品种将硼更多地分配到繁殖器官，而其叶片却承受了相对较大的缺硼胁迫。

Engineering geological environment evaluation relation to naturalism, economy, environment, engineering etc and various factors have variant influence degree. Presently, most of cities in China use method of qualitative analysis in engineering geological environment evaluation and this method has many shortcomings, such as need great investigation workload, difficultly unified standards, lowly spatialization accuracy, quantitative study is not easy and with great subjectivity in city planning.

城市工程地质环境评价涉及到自然、经济、环境、工程等多方面，且各因素对评价目标的影响程度也不同，而目前我国大部分城市在进行工程地质环境评价时多采用定性分析的方法，这种方法的调查工作量大，标准较难统一，空间定位精度较差，不易进行定量研究，使城市规划工作带有较大的主观性。

However remarkable impacts were observed in the plantation in terms of community physiognomy,community structure,species composition,species richness,and biomass accumulation.1 Planting trees made community structure simple.Betula alnoidis plantation had three layers including a dominant arbor layer,a complex and well developed shrub layer and a poorly developed vine layer.The arbor layer contained few species and had a single layer.The mountain rain forest had 4 layers including the dominant arbor layer,shrub layer,grass layer and vine layer.The vine layer was well developed and very rich in species composition,and the arbor layer contained as many as 38 species that could be grouped into 3 layers.2 Sequenced by the important value,main species for the plantation and the nature forest were totally different,and the plantation had one dominant species while the nature forest contained many dominant species.3 Planting trees changed the community physiognomy.

但是人工种植西南桦林对群落的季相外貌、群落的结构、物种组成、物种丰富度以及生物量等方面有较大的影响。1人工造林使得群落结构简化，西南桦人工林的层次结构有3层，以乔木层占优势，并且有种类多而发达的灌木层，同时，藤本植物欠发达，但是乔木层树种单一，明显仅有一层；山地雨林的层次结构有4层，以乔木层占优势，还有灌木层、草本层和藤本植物，藤本植物种类多，十分发达；乔木层树种丰富，可达38种，乔木层还可分为3层。2人工造林较大程度地改变了群落的物种组成，根据重要值的大小排列，人工林和天然林的主要物种组成已经完全不同；并且人工林单优树种明显，而天然林就含有较多的优势树种。3人工造林改变了群落的外貌。

On the landscape level, the regional landscape heterogeneity is increased and the connectivity reduced, which presents the increase of Shannon's diversity index and Evenness Index, decrease of dominance index and increase of fragmentation index. On the class level, it shows that human disturbance on landscape is intense during the past five years, anti the disturbance to artificial landscape mote intense luau that on semi-natural landscape, which means that the fragmentation index of semi-natural landscape is relatively smaller while that of the artificial landscape is larger.

从景观水平上看，区域景观异质性在增大，景观斑块的连通性降低，表现为多样性指数和均匀度指数呈增加，优势度指数减小；从类型水平上看，5年间人类对景观的干预程度较大，对人工景观的干扰强于半自然景观，体现在半自然景观类型的分离度较小，而人工景观类型的分离度较大。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。