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1.
To overcome the default of single search tendency, the ants in the colony are divided into several sub-groups. The ants in different subgroups have different trail information and expectation coefficients. The simulated annealing method is introduced to the algorithm. Through setting the temperature changing with the iterations, after each turn of tours, the solution set obtained by the ants is taken as the candidate set. The update set is obtained by adding the solutions in the candidate set to the previous update set with the probability determined by the temperature. The solutions in the candidate set are used to update the trail information. In each turn of updating, the current best solution is also used to enhance the trail information on the current best route. The trail information is reset when the algorithm is in stagnation state. The computer experiments demonstrate that the proposed algorithm has higher stability and convergence speed. 相似文献
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The short story "A Rose for Emily" written by William Faulkner belongs to the gothic fiction.Faulkner adopts the gothic writing skills and tells the readers the tragic life of the female protagonist Emily Grierson.In the perspective of feminism,the writer analyzes the short gothic fiction.In the following,this paper states the female’s negative living conditions in the maledominated society.Even though she tried to change,she finally failed.And the patriarchy is the fundamental reason for her trage dy. 相似文献
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《海外英语》2012,(19):283-284
Nowadays,computers are very common in the daily life.The whole society is deterred by the vast power of the com puter.The computer plays the role that range from the solving of basic date information to the utility in the daily life.In one word,the computer changes the style of our lives.Nevertheless,the development of the computer is only in the nascent period,so the new researches in the computer science are ubiquitous,the typical examples that settled in the paper will explain different aspects of the computer and different trends. 相似文献
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涂玉会 《语数外学习(高中版)》2008,(36):21-24
一、课文导读 I.Read the text,and finish the following cloze. Ever since the Civil War, the South has struggled to find ways to deal with its troubled past. The history of the South is __ of suffering. The wounds are slow to __ and the scars __ deep. Even today, the South is __ the rest of the USA. 相似文献
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The Old Man and the Sea was an excellent novel written by the famous American novelist Ernest Hemingway and the novel led to the Nobel Prize which he won in 1954.The novel is a simple story about a Cuban fisherman Santiago’s struggle with a marlin and sharks on the sea.In fact it has deep meaning,which implies the struggle between one’s ego and superego.Hemingway eulogizes the hero through the process of the struggle.The paper consists of three parts.The first part is the introduction to the writer and the novel.The second part analyzes the hero Santiago in details,including his struggle with the marlin and the sharks,his interest in the struggles.The third part is the conclusion that the hero Santiago’s superego controls his ego in the struggle and he is a real winner. 相似文献
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Name is an interesting thing, almost everything has its name. Nowadays along with the rising of consumption levels in China, the brand name of the car becomes an important topic. And the translation of the name of the automobile is the primary task for establishing the global image of the brand. In this paper, I summarize the translation methods for automobile trademarks and point out the importance of the translation of automobile’s trademarks. In addition, this paper explores the trend in the translation of automobile names in China. 相似文献
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English writing is the college students’synthetical application about the knowledge of English.English writing,however,is the weak segment of the college students'English learning all the time.Based on the researches home and abroad,the paper makes an implicational study on interlanguage fossilization in English writing of Chinese college students.Though probing the causes of fossilization in English writing,the paper proposes some measures to reduce the fossilization.In the chapter one,the paper introduces simply the interlanguage fossilization.In the chapter two,the paper analyzes college students English writing and get the causal factors of fossilization:unfavorite learning motivation of students,ineffective feedback to errors,interference of the mother tongue.Then,at the last chapter,the paper put up some measures to overcome and avoid the fossilization in college students'English writing:promoting students'motivation,providing right feedback,avoiding mother tongue interference. 相似文献
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With the analysis on regulating system in 200 MW steam turbine, the necessity of appending the fast-opening function to the original system is set forth and a new type of fast-opening mechanism is devised. The mathematical model of system is built up. With the use of AMESIM software, the displacement curve of the piston, the force curve of the cartridge valve spool, the pressure curve and the flux curve in the regulation process are obtained based on simulation. The performances of three fast-opening systems composed of cartridge valves with different diameters are compared. Based on the analysis on factors that affect the execution time of fast-opening, the dead zone of the fast-opening system is put forward. To overcome the defect, different operation modes are adopted for different zones. The result shows that with the increase of the valve diameter, the regulating time in the dead zone significantly exceeds the fast-opening time in the whole journey. Accordingly, the optimization operation tactic in the dead zone and the qualification conditions are brought forward. The fast-opening system composed of 32 mm cartridge valves is taken as an example with use of the tactic. The simulation result shows that the maximum regulating time is shortened by 509 ms. 相似文献
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We investigate the possibility of injection of a nucleotide via single-walled carbon nanotubes （SWNTs）. The collapse process of an SWNT with a large radius may proceed like falling dominoes. The characteristics of a large radius SWNT are utilized to drive the nucleotide movement in the SWNT, or even to inject the stored nucleotide out of the SWNT. In this process, the lateral section of the collapsed SWNT resembles a dumbbell. Occasionally, the nucleotide in the SWNT will be inbreathed into one of the two dumbbell ends, leading to interference with the injection process. To investigate the random nature of the injection process, a series of simulations on SWNT with different lengths were carried out. It was found that the injection probability was not influenced by the tube length. Freezing the nucleotide at the beginning, or modifying the SWNT at the outlet, may serve to facilitate the injection process, as indicated by the rise in the injection probability. 相似文献
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Murder on the Orient Express, a masterpiece in the detective fictions, is one of the most prevailing works of Agatha Christie. It provides special modes and new ideas for the later creation of the detective stories. Suspense is embodied largely in this book. A variety of suspense interweaves, overlaps and creates the stirring effect. This thesis first introduces the lifetime of the au?thor, the typicality of the book among the same kind of detective fictions. Then it aims at explaining and analyzing the suspense set?tings from the narrative time, the narrative point of view, clues in the book and the ending of the story by using the text analysis. Fi?nally, it states the significance of suspense settings. The study of suspense settings can not only dissect the artistic value and the charm of suspense in detective fictions but also contribute to improving readers'abilities of appreciating mystery stories. It can help them to shape a unique aesthetic perspective. 相似文献
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A shelter system based on cable-strut structures,consisting of compressive struts and high-tensile elements,is described in this paper.The deployment of the shelter is achieved by tightening inclined cables.Lower cables are used to terminate the deployment.The state of self-stress of the cable-strut structures in the fully deployed configuration is given,and the minimum strut length and the maximum load design of the shelter are discussed.The mechanical behavior of the system was studied under symmetrical and asymmetrical load cases.The results show that the shelter in the deployed configuration satisfies the ultimate limit and the serviceability limit state conditions.Finally,the stability of the cable-strut system is investigated,considering the effect of imperfections on the buckling of the shelter.We conclude that the influence of imperfections based on the consistent imperfection mode method is not significant. 相似文献
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AMY.B.M.TSUI thinks that most of the interactive learning starts with the teachers’ questioning. Richard and Lockart(1994) think that the proper questioning can help the students to acquire the second language. Jin Chuanbao(1997) even thinks that the questioning process of the teachers should become the core of the class. Though almost all of the teachers are questioning, they know little about the questioning strategies. In this case, it is urgent to study this subject. The present study reveals some problems of four teachers’ questioning strategies in Junior Middle School. I hope some helpful ideas can be found in the thesis. 相似文献
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Throughout the history of the listening comprehension teaching at home and abroad, the research mainly focus on the correlation of the learner’s English listening proficiency and their self-efficiency. Scholars like Alisa J.Bates, Penny Ur. and Widdowson, H. G. have claimed the significance of teacher’s role in listening comprehension. For the purpose of proving the necessity of the teacher’s role in listening comprehension, based on the analysis of the features of classroom listening comprehension,this paper presents the teacher’s role before class, in class and after class. Meanwhile, during the teaching process, teachers and learners are revealed in two way interactive relations and the pedagogical process is the result of the bilateral interaction of the two sides. 相似文献
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In this paper,a model named fictitious soil pile was introduced to solve the boundary coupled problem at the pile tip.In the model,the soil column between pile tip and bedrock was treated as a fictitious pile,which has the same properties as the local soil.The tip of the fictitious soil pile was assumed to rest on a rigid rock and no tip movement was allowed.In combination with the plane strain theory,the analytical solutions of vertical vibration response of piles in a frequency domain and the corresponding semi-analytical solutions in a time domain were obtained using the Laplace transforms and inverse Fourier transforms.A parametric study of pile response at the pile tip and head showed that the thickness and layering of the stratum between pile tip and bedrock have a significant influence on the complex impedances.Finally,two applications of the analytical model were presented.One is to identify the defects of the pile shaft,in which the proposed model was proved to be accurate to identify the location as well as the length of pile defects.Another application of the model is to identify the sediment thickness under the pile tip.The results showed that the sediment can lead to the decrease of the pile stiffness and increase of the damping,especially when the pile is under a low frequency load. 相似文献
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The language is a play of signs. However, behind the signs is the culture manipulates the signs. The sign is the surface structure; while under the surface is that the thinking pattern matters, which is the only small part of the culture. The culture difference always exists. I would like to study it in terms of the problems which the essay reveals. The first part is to list examples, and the second part tries to analyze it in terms of thinking patterns. The last part is the concluding part. It intends to find solutions to avoid that problem. 相似文献
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The Great Gatsby is considered the masterpiece of F.Scott Fitzgerald.The reason why it is one of the greatest novels all over the world is not only because of its showing the cruel social reality in America during 1920s and the selflessness and merciless of human nature at that time,but also the novel’s unique narrative angle that Fitzgerald wrote the novel from the first person perspective.Fitzgerald com posed the figure "Nick Carraway" as the narrator of the story of Gatsby.And the plots of the novel are ingeniously conceived and well-knit.It gets coherence between the beginning and the end,and the plots linked together.So the novel makes a strong impression on readers. 相似文献
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Bilingual education has more than 50-years’ history in the world.It has gained the attention from the world since 1960s in some western countries,such as the USA and Canada.With the growth of international business and the appearance of the global village,bilingual education has become a hot issue in China.This article generally outlines the picture of bilingual education in the world.Then,it describes the development of bilingualism under Chinese contexts.Above all,the models of the bilingual education have been explicitly introduced to build up the basis for further investigation.Besides,the two main periods of the bilingual education in China have been described based on the empirical literature.In the end,the influential factors of the development of bilingual education have been discussed from five main perspectives:economic,social,educational,cultural and political framework.However,there is a lack of documentary resources and experimental materials for the scaffolding of bilingual education in China,which requires further investigation. 相似文献
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Teaching aims: 1. Enable the students to study the phrases: climb the tree, feed the fish, pick the flowers, walk on the grass. 2. Enable the students to study the sentences: Don‘ t climb the trees. Don‘ t feed the fish. Don‘ t pick the flowers. Don‘ t walk on the grass. 3. Raise the students‘interest to learn English and encourage them to learn from the others. 相似文献
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VVhat 15 the answer? Just suggest a nunlber. Add 5 to the number. MultiPly the、um by 3. Subtract 1 from the answer. Add the digits of the answer together. MultiPly the sum of the digirsby 3. Add 2 to the answer· Add the digits of the answer together- MultiP]y the sum of the digits by 2. Add 3 tothe answer. Wliat 15 the answer always?AIIsw~r:ItiS 19.考一考@Jordan… 相似文献