可否认性

Currently all the previous researches about deniability in group key establishment protocols were based on the Random Oracle assumption.

给出了一个标准模型下可证明安全和可证明可否认性的高效的群密钥协商协议，并基于DDH假设和伪随机函数集的存在性假设一同给出了其安全证明和可否认性证明。

Their complex operation and course bring net denizen inconvenience. In addition, it has security risk, for example, the electronic order is not signed and the deal can be denied.

采用电子支付的较多的是银行卡，操作起来非常复杂，同时也存在安全性问题，比如没有对定单签名，交易具有可否认性。

These schemes do not only achieve strong distinguishability and non-repudiation properties but also achieve strong unforgeability property.

这两个方案不仅具有强可区分性、强不可否认性，而且具有强不可伪造性，能抵抗原始签名人假冒代理签名人、伪造代理签名攻击。

Wittgenstein's critique of his phenomenology , however, revives the celebrated Tractarian dichotomy between "unspeakablity" and "speakablity" in a new context by denying any attempt to employ any linguistic tool to designate or describe the absoluteness of the data which could be only "shown".

通过否认任何试图用语言手段来标示或描述予料的企图，并通过对于予料自身的绝对性的展示，维氏对于他自己的"现象学"观念的批判实际上乃是复活了他在《逻辑哲学论》时代就已作出的对于"不可说性"与"可说性"的二分法。

The author would further argue for the theses listed below:(1) Wittgenstein's"phenomenological period"could be regarded as the beginning of his lasting interest in"the philosophy of psychology"into the end of his life, whereas the interest of this kind didn't appear obviously in Tractatus;(2) By interpreting the"atomic propositions"as the simplest description of the data instead of avoiding illustrating what it is as Tractatus did, Wittgenstein's "phenomenological period"does show us an amazing affinity between his own standpoint at that time and that of the Russellian logical atomism, which is surely under the influence of the empiricist tradition;(3) Wittgenstein's critique of his phenomenology, however, revives the celebrated Tractarian dichotomy between"unspeakablity"and"speakablity"in a new context by denying any attempt to employ any linguistic tool to designate or describe the absoluteness of the data which could be only"shown".

本文所试图论证的要点可以被概括为：(1)维氏的"现象学阶段"可以被视为他关于"心理学的哲学"的长期学术兴趣的发端点——这一兴趣一直延续到他生命的终点，却并未体现于其早年作品《逻辑哲学论》之中；(2)通过将"原子命题"解释为对于感觉予料的最简单的描述（而不是像《逻辑哲学论》那样回避对于"原子命题"之所是的正面解说），维氏的"现象学阶段"乃是向我们展现了他该时期的哲学立场与罗素的经验论版本的"逻辑原子主义"之间的令人惊讶的亲缘关系；(3)通过否认任何试图用语言手段来标示或描述予料的企图，并通过对于予料自身的绝对性的展示，维氏对于他自己的"现象学"观念的批判实际上乃是复活了他在《逻辑哲学论》时代就已作出的对于"不可说性"与"可说性"的二分法。

This scheme realizes the anonymity of identity of bidders, unforgeability and public verifiability of successful bidders, etc.

该方案实现了参与竞标公司身份的匿名性、中标者的不可否认性、可公开验证性等安全性问题。

The fundamental security requirements include confidentiality, authentication, data integrity, and nonrepudiation.

而其基本上的安全需求，包含有隐密性，可认证性，数据的完整性和不可否认性。

The final chapter concludes with a reconfirmation of the historical position of Ping Shan Len Yan, seeing the text as readable, scriptable and transmutable.

第六章为结论，重新以「续衍与转化」的角度整理研究成果，并回应第二章历史座标商榷之论，指出《平山冷燕》是「可读性」、「可写性」、「可传性」兼备的文本，其历史地位不容否认。

Aiming at the actual need of impeach work, and on the basis of analyzing, concluding, summarizing and informing against the systematic current situation at present, the article structure the new model of electronic impeaching system, adopt group signature and bit commitment technology to realize each functions of the system respectively, and guarantee the security of accuser, such as anonymity, unforgeability, undeniable, unlinkability,traceability,etc.

论文针对检举工作的实际需要，在分析、归纳、总结了当前检举系统现状的基础上，构造了新型电子检举系统的模型，并分别采用群签名和比特承诺技术实现了系统的各项功能，保证了匿名性、不可伪造性、不可否认性、不相关性和可追踪性等安全性。

Wittgenstein's critique of his phenomenology , however, revives the celebrated Tractarian dichotomy between "unspeakablity" and "speakablity" in a new context by denying any attempt to employ any linguistic tool to designate or describe the absoluteness of the data which could be only "shown".

通过否认任何试图用语言手段来标示或描述予料的企图，并通过对于予料自身的绝对性的展示，维氏对于他自己的&现象学&观念的批判实际上乃是复活了他在《逻辑哲学论》时代就已作出的对于&不可说性&与&可说性&的二分法。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。