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Grey systems theory and method were used here, the article simulated shelf-life entironment at constant temperature 20℃, and constant humidity 90%, texture profile analysis(TPA tests in sarcocarp and core, were carried out and the texture parameters studied chewiness is found to be the diagnostic gene of shelf-life property changes, with grey model GM(1,1) and grey forecasting model based on chewiness were thus established. The veracity and applicabilidy of the grey forecasting model of carrot core were c...

本研究应用灰色系统理论及其方法，模拟货架期环境(恒温20℃、恒湿90%)，做了胡萝卜贮藏的果肉和果心的TPA测试，进行了质地特性参数的分析研究，得出咀嚼性是胡萝卜货架期品质变化的"特征因子"，并建立了基于咀嚼性的一阶灰色模型GM(1，1)和灰色预测模型，还通过论证与检验，确定了胡萝卜果心的灰色预测模型的准确性与可用性，从而为果蔬贮藏及货架期研究提供一个重要的认识工具。

In this article,we mainly study the space-like submanifolds with parallel mean curva-ture vector,constant scalar curvature or constant square length of the second fundamental form,respectively.We obtain some pinching theorems and rigidity results by estimating Laplace of the square length of the second fundamental form of the such submanifolds and using yaus maximum principle or Stokes Theorem.

本论文主要研究de Sitter空间中具有平行平均曲率向量、常数量曲率或第二基本形式模长平方是常数的三类类空子流形，并通过分别估计三种情形下子流形的第二基本形式模长平方的Laplace，利用Yau的极大值原理和Stokes定理，获得了这些子流形的一些拼挤定理和刚性定理。

Through the thermodynamic calculation of the reaction that aluminum and magnesium reduce anhydrous scandium chloride molten salt to prepare aluminium-magnesium-scandium master alloy, we got that the standard equilibrium constant of the reaction is 1.074 ×10~(19), and the experimental equilibrium constant of it is approximately 6.874 × 10~(14)under around 1200 K and 1 standard pressure, which demonstrate that the reaction can take place and proceed thoroughly.

通过铝镁热还原无水氯化钪熔盐制备铝镁钪中间合金反应的热力学计算，得出：在1200K左右温度，1标准大气压下，该反应的标准平衡常数K为1.074×10~(19)，经验平衡常数K′约为6.874×10~(14)，这说明铝镁热还原无水氯化钪熔盐法制备铝镁钪中间合金的反应能够进行，而且进行的很彻底。

In an overlapping generations model, there are two monetary regimes to be selected for the government:(1)"constant real deficit" regime, that is, the government decides a constant real deficit and maintain that real deficit by adjusting the supply of money;(2)"fixed growth rate of money" regime, that is, the government decides a fixed growth rate of money and maintain it by adjusting seignorage.

在世代交叠经济中，通常存在两种典型的货币政策可供政府选择：（1）"实际赤字固定"政策，即政府确定一个固定的实际赤字水平，通过调整货币供给维持实际赤字的固定水平；（2）"货币增长率固定"政策，即政府确定一个固定的货币供给增长率，通过调整铸币税维持货币增长率的固定水平。

By analyzing two SEIS epidemic models with fixed period of latency, one of which is with constant input, another of which is with exponent input, the essential difference between their dynamic behaviors is found. For the model with constant input, the threshold is given.

通过研究两类带有确定潜伏期的SEIS传染病模型，发现对种群的常数输入和指数输入会使疾病的传播过程产生本质的差异。

In this process, math model, geometry similitude, loading constant ways, and time constant ways were adopted.

并在复合厌氧反应器的放大过程中，综合采用了数学模型法和几何尺寸相似、负荷常数及时间常数方法。

Can also be water in the system operating conditions change to maintain constant flow, in the system, it can all slip constant flow, achieve a balanced flow distribution may also be subject to change and regulate the flow of the slip road, achieve dynamic balance.

也可以在系统水利工况变化时保持流量恒定，在系统中它既可恒定各个支路的流量，实现流量的均衡输配，也可以随时改变和调节各支路的流量，实现动态平衡。

The solar constant does not remain constant over long periods of time.

太阳常数不会保持不变长时间。

"Kv ·= constant" principle, a sense of freedom laminated springs and valve switching power systems Plug Valves constitute △ P / S =εL S-feeling film work area,ε-spring Hook coefficient, L-valve stroke From this position of valve travel decisions every size of △ P value, if the valve travel position of the Kv and inversely proportional to the G = Kv · a constant value.

"Kv·=常数"原理，自由弹簧和感压膜构成阀门开关动力系统△P/S=εL S—感膜工作面积，ε—弹簧的胡克系数，L—阀行程由此可知阀门的每一个行程位置决定△P值的大小，如果阀行程位的Kv与成反比，则G=Kv·是恒定值。

The test area of Formosat-2 image is Tainan,image level is Level 1A,image size is 12000pixel×16800pixel,square measure is 175.6km2.the research would use different areas and different number of ground control points with different distribution to test,and change the constant h when every test to get the best constant h.

测试的地区为台南市的福卫二号影像，影像的等级为Level 1A，影像大小为12000像元×16800像元，面积涵盖范围约175.6平方公里。并且会以分区测试以及不同分布和数量的地控点进行测试，再改变每一次计算时的微小常数h，以得到最佳的h值。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。