查询词典 gamma

But as Fermi project scientist Steve Ritz (NASA/Goddard Space Flight Center) notes, GRBs give us a chance to conduct the experiment in space by letting gamma rays run a very long race across the vast distances of intergalactic space.

不过根据费米望远镜项目科学家史蒂夫·里茨（美国航空航天局/戈达德宇宙飞行中心）的说法，伽马射线爆发提供了一个在太空进行实验的机会，因为伽马射线需要穿过广阔的星系空间，这是一段非常遥远的距离。

The linear video signals applied in AC PDP are obtained from the conventional video signals after inverse gamma correction, which bring the loss of low gray images.

为了在彩色AC PDP中应用常规的视频信号，必须将常规的彩色视频信号进行反伽马校正使其转换成线性视频信号。

The status of safety facilities of the gamma irradiator with wet source storage is reported in this paper.

本文叙述了水池贮源型γ辐照装置安全设施的概况。

Gamma Ray Burst - a 2004 study told us that a GRB from a distance of just one kiloparsec could destroy half of Earth's ozone layer.

伽玛射线爆发- 2004年的一项研究告诉我们，从只有一个kiloparsec距离暴可能摧毁地球臭氧层的一半。

This thesis mainly discuss following issues, Theory and simple expressions for array covariance matrixes are derived when angular spread functions are symmetric distribution functions, i. e. the Uniform distribution, the Gauss distribution, the Laplace distribution and the Von Mises distribution, and a non-symmetric distribution function, i. e. the Gamma distribution. And the relation between the effective signal subspace and the array number, or and the nominal angle of the distributed source, the angular spread, the distributed functions, and the Signal-to-Noise Ratio is gained. The dimension of the effective signal subspace increases with increment of the array number. And it is more obvious to the non-symmetric distribution. The dimension of the effective signal subspace decreases with increment of the nominal angle. And the distributed source is equal to a point source as θ=π/2. The dimension of the effective signal subspace increases with increment of the angular spread.

本论文针对阵列信号处理中广泛存在的分布源现象，主要讨论了以下问题：推导了角度分布函数分别为对称的均匀分布、高斯分布、拉普拉斯分布、Von Mises分布和非对称的伽马分布时，分布源阵列接收信号协方差阵的严格模型和简化模型，得到了单个分布源的有效信号子空间随阵元数、分布源中心角、分布角、角度分布函数和信噪比的变化规律：随着阵元数的增加，对所有角度分布函数的有效信号子空间维数也随着增加，且非对称分布函数的有效信号子空间充满整个空间的可能性更大；随着分布源中心角逐步增加，有效信号子空间维数逐步减小，当θ=π/2时，等价于点源情形；随着分布源分布角逐渐加大，有效信号子空间维数也随之增加，直到有效信号子空间充满整个空间；随着信噪比的增加，有效信号子空间维数有一定程度的减少。

Aimed at the zone of interest in the Q 3D seismic survey, which is characterized by thin sand body as well as the quickly lateral alternation, three inversion methods of Strata software are put into use, including the 3-D wave impedance inversion, the well log parameter inversion, and multi\|attribute gamma inversion.

针对Q三维地震工区目的层砂体薄、横向变化快的特点，在Strata软件上相继采用了三维波阻抗反演、测井参数反演和多属性伽马反演3种反演方法进行试验，最终确定了多属性伽马反演方法能较好地解决利用地震资料进行储层预测的一些问题，从而为工区勘探开发提供了可靠的高精度反演资料。

Moreover, SRT exposure showed decreased activation in gamma (30-45Hz) and a lateralization of evoked delta (1 to 4 Hz).

此外，塞尔维亚广播电视台曝光显示下降激活伽玛（ 30 45Hz ）和侧诱发三角洲（ 1至4赫兹）。

Grand Unified Theory, Lepton Stars and gamma-ray Bursts, Quasars

大统一理论，轻子星和γ射线暴，类星体

In this project, we study in details the light curve and spectrum of gamma-ray bursts.

本项目对伽马暴的光变曲线和能谱进行深入研究，定量解答了M。

According to its statistical structure of likelihood function, constructed their Bayesian estimation under the normal-Gamma conjugate prior distribution.

首先，从最简单的时间序列AR模型入手，分析了时间序列AR模型的统计结构及其条件似然函数，根据似然函数构造了模型参数的共轭先验分布。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。