Relativity and impossibility of superluminal motion

I prove that not only particle motion but also wave propagation cannot be faster than light according to relativity.

An Impossibility Theorem for Nonbinary Social Choice

In Arrow’s General Possibility Theorem (GPT), social choice should be defined over allpairs of alternatives. In this paper, we generalize Arrow’s GPT to situations where choice over pairs ofalternatives may not be possible. This shows that Arrow’s GPT and related impossibility results canbe established without binariness of social choice.

Theoretical Framework for a Polymorphic Network Environment

The question of whether an ideal network exists with global scalability in its full life cycle has always been a first-principles problem in the research of network systems and architectures.Thus far,it has not been possible to scientifically practice the design criteria of an ideal network in a unimorphic network system,making it difficult to adapt to known services with clear application scenarios while supporting the ever-growing future services with unexpected characteristics.Here,we theoretically prove that no unimorphic network system can simultaneously meet the scalability requirement in a full cycle in three dimensions—the service-level agreement(S),multiplexity(M),and variousness(V)—which we name as the“impossible SMV triangle”dilemma.It is only by transforming the current network development paradigm that the contradiction between global scalability and a unified network infrastructure can be resolved from the perspectives of thinking,methodology,and practice norms.In this paper,we propose a theoretical framework called the polymorphic network environment(PNE),the first principle of which is to separate or decouple application network systems from the infrastructure environment and,under the given resource conditions,use core technologies such as the elementization of network baselines,the dynamic aggregation of resources,and collaborative software and hardware arrangements to generate the capability of the“network of networks.”This makes it possible to construct an ideal network system that is designed for change and capable of symbiosis and coexistence with the generative network morpha in the spatiotemporal dimensions.An environment test for principle verification shows that the generated representative application network modalities can not only coexist without mutual influence but also independently match well-defined multimedia services or custom services under the constraints of technical and economic indicators.

Mysterious Exporter for Brassinosteroid First Identified

It is impossible for plants to grow and reproduce without being regulated by phytohormones.One of the phytohormones is the brassinosteroid(BR)hormones,also named as the sixth phytohormone.

佳能广告“Impossible Made Possible”之文体分析

佳能打印机广告"impossible made possible"有着显著的文体特征:一是语音方面,各种押韵被用到,如头韵、尾韵等;音调重音在末尾;元辅音的频繁重复使用。二是词汇方面,形容词占据着极大的比重;反义词possible与impossible强烈的对比效果。三是句法方面,过去简单小句的使用使句子短小精湛。四是语义方面,修辞手法—"重复"的使用。五是语篇方面,情态的精准把握与极性词的使用;语言组织时概念主位与述位精确的定位;口语与书面语的交替使用。基于以上文体特征,该广告大获成功。

英语形容词句型

在英语中,形容词用在某些联系动词(主要是be,become,seem等)之后,常常还需要一定形式的补充成份。需要何种形式的补充成份,主要与形容词有关。Hornby称这种形容词及其补充成份为“形容词句型”(Adjective Patterns)。形容词句型主要有以下三个: Ⅰ.形容词+to-不定式Ⅱ.形容词+介词短语Ⅲ.形容词+从语形容词用于哪个句型有一定的习惯,例如,有些形容词之后只接介词短语,不接to-不定式。

quite与very

quite 与 very 是英语中使用频率较高的两个副词,均表示“非常”之意,但其差异微妙,用法繁杂,因此有必要作一比较来发现规律,以便掌握。1.没有等级之分的形容词,如 perfect(完美的),impossible(不可能的),dead(死的),right(正确的),wrong(错误的),full(满的),empty(空的),sure(确信的),certain(肯定的)。

The Possibility of Semantic Features and Analysis of Figures of Speech —— Cognitive Figures and Expressive Figures

In this paper, linguistic methodology is suggested for approaching figures of speech formed due to shift of cognitive relations. First, requisite features, possible features and impossible features are proposed on the basis of semantic analysis and their interrelationships and expressions are discussed. Then it is further argued that all figures formed due to shift of cognitive relation are expressed to accept an impossible feature; and there are four semantic forms to accept it: “zero distance/distanced”, “implicit/explicit”, “direct/indirect”, “positive/negative”. Finally, starting from the two approaches to figures we comment on the traditional idea of separating decoration and substance and the new idea of “function as form”.

Development and application of plant transformation techniques

Genetic transformation is a powerful biotechnology for introducing novel genes into economically important plants from distantly-related plants or even unrelated species such as microbes and animals.This feat is impossible to be achieved by conventional breeding techniques.Development of transgenic plants has been a controversial subject since 1971 when the first genetically modified organism（GMO）was developed（James and Krattiger1996）.

形容词副词相关固定句式小结

近几年在高考题中形容词和副词的词义辨析在高考题中出现较多,但不容忽视的是形容词副词所涉及到的固定句式也在高考题中频繁出现,现将这些句式总结归纳如下:

形容词或副词最高级意义的特殊表达法

形容词或副词的最高级意义除了用它们的最高级形式表示外,有时为了表达上的需要,也可用其原级或比较级形式来表示最高级含义。现归纳如下: 一、某些形容词或由其派生的副词,本身具有最高级的含义。这些词多含有“绝对性”的意义,没有比较级和最高级的变化形式。例如:

不定式常见用法例析

不定式是非谓语动词的一种,也是我们现阶段英语学习的重点。不定式到底有哪些用法呢?让我们从一些题目中来看一看吧。用法一:作主语It’s standard practice for a company like this one____a security officer.A.employed B.being employed C.to employ D.employs解析本题考查固定句型:It+be+n+for sb./sth.to do…,考点为不定式作主语,故答案为C。对不定式作主语的考查,常常以固定句型的形式出现,主要有以下5种句型:

“形容词+不定式”结构浅析

不定式是英语动词的一种非限定形式,大家较为熟悉。但对“形言词+不定式”这一结构,有些人会认为它只是一种比较简单的搭配关系,其实不然,它是一种复杂而又十分活跃的结构。因此,研究这一语法结构对于英语教学很有必要。

A New Method for Impossible Differential Cryptanalysis of 8-Round Advanced Encryption Standard

This paper first presents an impossible differential property for 5-round Advanced Encryption Standard （AES） with high probability. Based on the property and the impossible differential cryptanalytic method for the 5-round AES, a new method is proposed for cryptanalyzing the 8-round AES-192 and AES-256. This attack on the reduced 8-round AES-192 demands 2^121 words of memory, and performs 2^148 8-round AES-192 encryptions. This attack on the reduced 8-round AES-256 demands 2^153 words of memory, and performs 2^180 8-round AES-256 encryptions. Furthermore, both AES-192 and AES-256 require about 2^98 chosen plaintexts for this attack, and have the same probability that is only 2^-3 to fail to recover the secret key.

成语结构“There+be+negative+-ing participle……”初探

一次,在与一位外籍英语教师谈话时,我用了这样一个句子:“There’s no describing it.”(“简直无法形容。”)听了这话后,外籍教师称赞说这是“idiomatic English”。受到外籍教师称赞后,当然很自信,第二次不假思索又用了一个同样结构的句子:

Search Algorithm for Determining the Range of the Possible Collision of Conver Polygons

Let P=(po, p1,..., pn-1 ) and Q=(qo,q1..., qm-1) be two arbitrary convex polygonsin plane. In this paper, the author studies the problems of how to quickly determine their possiblecollision range and movable range. In the paper, a new sufficient and necessary condition for decidingpossible collision is proposed,and the basic characters of the oblique supporting lines are investigated,and on these grounds the problem to determine the possible collision range is transformed into thatof searching the supporting points on the sets of convex polygon vertexs. Using the strategy ofsearching simultaneously the sets of vertexes of P and Q, the author constructs the fast algorithmfor finding the supporting points, the time-complexity of which is O(log2(m + n)). Based on theseresults, the algorithms to quickly determine the range are given, which possess the time-complexityof O(log2(m+n)).

How to Explain the Meanings of Words in Middle School English Teaching

New words are constantly coming into a language.Science and technol-ogy are exploring into some new field,rich and more expensive.Old wordsget new meanings too."Heavy"used to be an adjective,meaning,"Havingweight".It is now used also as a noun,meaning"a big shot".The student haveto struggle against learning words throughout the course from the very be-ginning to the very end of the course.English has a very large vocabulary.It is utterly impossible for a foreign language student to learn all the wordsin a language.So in English teaching teachers have to select the most use-ful words for students to learn.Teachers should take care to use the

On the Literature of Roland Barthes

For Roland Barthes,the literature is the only thing that we should save,because all science activities are expressed by the literature.The literature is a field of the hope and the meaning is instable.The literature affects the writer’s social and the ideology,the attribute manners,and the consummation and the critics,and it is a creature.Roland Barthes explains from three parts:(1)the relation between the literature and the language;(2)the relation of the literature and the reality;and(3)the zero literature.Roland Barthes explains the structuralism and does not hurt the reality of the literature,because he thinks the literature exists in the forms and the systems and not in the content or function.Roland Barthes’point on the literature is a new manner and the angle and it is different from Sartres.The zero literature is a fervent imagination of the aesthetics of the language and the exception of the ideal,and it symbolize the aspiration for the freedom and the ideal world,so he affirms that the literature should be the Utopianism.

英语单部句

在日常生活中,有时一个单词或一个短语和适当的语调、动作、表情或具体的环境联系起来,也能清楚地表达一个完整的意思,这也是一种句子,我们把这种句子叫作单部句。这种句子从语法角度上看,或者缺少主语,或者缺少谓语,或者两者都没有,但在实际生活中却应用得很广泛。它不但可以用作陈述句,而且也可以用作疑问句。