不提供信息的

Information security usually adopt coding and information hiding technology ,though digital watermark belongs to information hiding technology ,its signification and application intention are different with information hiding .The hiding information is similar to the protected color of animal ,because the sneak can not ensure whether there is hiding information when he face a great deal of information to avoid of attack .Digital watermark is enchased into multimedia product to identify copyright data .

大多数时间域水印算法提供简捷有效的水印嵌入方案，且具有较大的信息嵌入量，但对语音信号处理的健壮性较低；变换域水印算法则具有较强的抵抗信号处理和恶意攻击的能力，但嵌入和提取过程相对复杂；压缩域水印算法是直接把水印信号加在压缩音频上的方法，它可以避免压缩算法编解码的复杂过程，但稳健性不高，而且能够嵌入的水印容量不大[2][14]。

A NetCoin payment consists of two parts, a digitally signed payment authority and a separate payment token that determines the amount.

根据小额电子信息交易系统的每一次交易金额非常小这一事实，NetCoin交易协议采用了&轻量级&的密码学安全机制和离线的认证方法，利用Hash函数构造的随机数链来作为交易的付款方式，卖方可以不联系NetCoin网关而离线的认证一个匿名的买方，从而使系统具有很高的效率和较低的开销，并且能提供买方对卖方的匿名性。

A TTI is a small, inexpensive device that show an easily measurable, Time-temperature dependent, irreversible change that can be correlated to quality changes of a food product that undergoes the same temperature distribution.

货架寿命指示器是一种简单便宜的质量监控装置，它能显示一种易测的与时间—温度相关的，不可逆的变化，这种变化能与经历相同温度环境的食品产品的质量相关联，从而提供所监控产品的质量变化信息和剩余货架寿命。

A number of v=0~57 vibration levels were determined and assigned. The levels cover more than 99% of the potential well depth of the state. No evident autoionization was found related to the levels belonging to the 13 g- state above the ionization threshold, implying the distinct character of the doubly excited valence state from the Rydberg states.

并发现13 g-态能级即使超过电离限时亦无明显的自电离倾向，反映了双电子激发态不同于里德堡态的独特性质。13 g-态是碱金属双原子分子电离限以下唯一的3 g-对称性的态和电离限下唯一较纯的双电子激发态，这些结果为分子结构和量子化学的定量研究提供了重要的信息；（2）通过检测Na 3d 3p原子荧光，观察到Na2分子的33 g和43 g+态在3s+3d解离限以上的预解离能级及其转动线宽加宽等。

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。