[Objective] To examine the grammar model based on lexical substring exac- tion for RNA secondary structure prediction. [Method] By introducing cloud model into stochastic grammar model, a machine learning algorithm su...[Objective] To examine the grammar model based on lexical substring exac- tion for RNA secondary structure prediction. [Method] By introducing cloud model into stochastic grammar model, a machine learning algorithm suitable for the lexicalized stochastic grammar model was proposed. The word grid mode was used to extract and divide RNA sequence to acquire lexical substring, and the cloud classifier was used to search the maximum probability of each lemma which was marked as a certain sec- ondary structure type. Then, the lemma information was introduced into the training stochastic grammar process as prior information, realizing the prediction on the sec- ondary structure of RNA, and the method was tested by experiment. [Result] The experimental results showed that the prediction accuracy and searching speed of stochastic grammar cloud model were significantly improved from the prediction with simple stochastic grammar. [Conclusion] This study laid the foundation for the wide application of stochastic grammar model for RNA secondary structure prediction.展开更多
The spirit of craftsmanship applies to every trade. In the context of opportunities arising from the new industrial revolution and China's transition towards high-end manufacturing, Premier Li Keqiang put forward the...The spirit of craftsmanship applies to every trade. In the context of opportunities arising from the new industrial revolution and China's transition towards high-end manufacturing, Premier Li Keqiang put forward the concept of the spirit of craftsmanship. This paper reckons that the spirit of craftsmanship can be defined from six dimensions including dedication, standard, precision, innovation, perfection and human care. In fact, the spirit of craftsmanship abounds in China, as illustrated by the examples of Tongrentang and Haier. In comparing the three manufacturing powers of Germany, Japan and the United States, this paper reveals the differences in the connotations of the spirit of craftsmanship across these countries. According to specific national conditions and development stage, China must achieve structural re-engineering of corporate organizations at the level of firms, products, divisions and modules. In a nutshell, the spirit of craftsmanship is a core component of corporate and industrial civilization and it holds an important historic position in industrial and social civilization.展开更多
The Test for English Majors Band-4(TEM4) is annually taken for the second year students in China and it is based on the requirement of English teaching syllabus for English majors. This paper has collected some of s...The Test for English Majors Band-4(TEM4) is annually taken for the second year students in China and it is based on the requirement of English teaching syllabus for English majors. This paper has collected some of students' compositions of TEM-4, and according to the score evaluation of the syllabus as well as TEM-4, the paper aims to analyze students' errors and find out their reasons behind in order to improve students' writing capacity in TEM-4.展开更多
AIM:To analyze the experience within our hospital and to review the literature so as to establish the best means of diagnosis of abdominal tuberculosis. METHODS:The records of 11 patients (4 males,7 females, mean age ...AIM:To analyze the experience within our hospital and to review the literature so as to establish the best means of diagnosis of abdominal tuberculosis. METHODS:The records of 11 patients (4 males,7 females, mean age 39 years,range 18-65 years) diagnosed with abdominal tuberculosis in Harran University Hospital between January 1996 and October 2003 were analyzed retrospectively and the literature was reviewed. RESULTS:Ascites was present in all cases.Other common findings were weight loss (81%),weakness (81%),abdominal mass (72%),abdominal pain (72%),abdominal distension (63%),anorexia (45%) and night sweat (36%).The average hemoglobin was 8.2 g/dL and the average FAR was 50 mm/h (range 30-125).Elevated levels of cancer antigen CA-125 were determined in four patients.Abdominal ultrasound showed abnormalities in all cases:ascites in all,tuboovarian mass in five,omental thickening in 3,and enlarged lymph nodes (mesenteric,para-aortic) in 2.CT scans showed ascites in all,pelvic mass in 5,retroperitoneal lymphadenopathy in 4,mesenteric stranding in 4,omental stranding in 3, bowel wall thickening in 2 and mesenteric lymphadenopathy in 2.Only one patient had a chest radiograph suggestive of a new TB lesion.Two had a positive family history of pulmonary TB.None had acid-fast bacilli (AFB) in the sputum and the tuberculin test was positive in only two.Laparotomy was performed in 6 cases,laparoscopy in 4 and ultrasound- guided fine needle aspiration in 2.In those patients subjected to operation,the findings were multiple diffuse involvement of the visceral and parietal peritoneum,white ‘miliary nodules’or plaques,enlarged lymph nodes,ascites, ‘violin string’fibrinous strands,and omental thickening. Biopsy specimens showed granulomas,while ascitic fluid showed numerous lymphocytes.Both were negative for acid-fast bacilli by staining.PCR of ascitic fluid was positive for Mycobactenum tuberculosis ( M.tuberculosis) in all cases. CONCLUSION:Abdominal TB should be considered in all cases with ascites.Our experience suggests that PCR of ascitic fluid obtained by ultrasound-guided fine needle aspiration is a reliable method for its diagnosis and should at least be attempted before surgical intervention.展开更多
To expand knowledge on microbial communities of various metal-rich levels of mine drainage environments in Anhui province, China, the archaeal and bacterial diversities were examined using a PCR-based cloning approach...To expand knowledge on microbial communities of various metal-rich levels of mine drainage environments in Anhui province, China, the archaeal and bacterial diversities were examined using a PCR-based cloning approach. Eight acid mine water samples were collected from five areas in Tongling. Phylogenetic analyses revealed that bacteria mainly fell into ten divisions, which were Betaproteobacteria, Gammaproteobacteria, Alphaproteobacteria, Deinococcus-Thermus, Nitrospira, Firmicutes, Actinobacteria, Deltaproteobacteria, Bacteroidetes, Chloroflexi. Archaea fell into three phylogenetic divisions, Thermoplasma, Ferroplasma and Thermogymnomonas. The unweighted pair group method with arithmetic mean(UPGMA) cluster analysis based on the microbial communities’ compositions revealed that five samples shared similarity with the dominance of Meiothermus and Thermomonas. Two samples had the preponderant existence of Acidithiobacillus and Leptospirillum. The remaining sample owned higher microbial communities’ diversity with the Shannon-Weaver H up to 2.91. Canonical correlation analysis(CCA) suggested that microbial community structures had great association with p H and the concentration of Hg2+, Pb2+, Fe3+, Cl-, SO2- 4in water.展开更多
This paper is aimed to propose an approach to predict the dynamic characteristics of ring-plate planetary indexing cam mechanism, which is a novel type of indexing mechanism that employs internal planetary transmissio...This paper is aimed to propose an approach to predict the dynamic characteristics of ring-plate planetary indexing cam mechanism, which is a novel type of indexing mechanism that employs internal planetary transmission structure. Firstly, the geometry and structure of the mechanism are discussed and the kinematic practicability is simulated with virtual prototype design. Then a 3D finite element model of the ring-plate planetary indexing cam mechanism is developed with the commercial software of MATLAB and ANSYS. Through the finite element analysis, the natural frequencies and the corresponding mode shapes are predicted in one motion cycle. On the basis of the virtual prototype design and finite element analysis, an experimental prototype is made and tested to validate the prediction of the dynamic characteristics. The agreement between experimental results and the finite element analysis testifies that the finite element model developed is applicable to the prediction of the dynamic characteristics of this type of mechanism.展开更多
Deformation characteristics of light weight soil with different EPS (expanded polystyrene) sizes were investigated by consolidation tests.The results show that the confined stress-strain relation curve is in S shape,w...Deformation characteristics of light weight soil with different EPS (expanded polystyrene) sizes were investigated by consolidation tests.The results show that the confined stress-strain relation curve is in S shape,which has a good homologous relation with e-p curve and e-lgp curve,and three types of curves reflect obvious structural characteristics of light weight soil.When cement mixed ratio and EPS volume ratio are the same for different specimens,structural strength decreases with the increase of EPS size,but compressibility indexes basically keep unchanged within the structural strength.The settlement of light weight soil can be divided into instantaneous settlement and primary consolidation settlement.It has no obvious rheology property,and 90% of total consolidation deformation can be finished in 1 min.Settlement-time relation of light weight soil can be predicted by the hyperbolic model.S-lgt curve of light weight soil is not in anti-S shape.It is proved that there is no secondary consolidation section,so consolidation coefficient cannot be obtained by time logarithm method.Structural strength and unit price decrease with the increase of EPS size,but the reducing rate of the structural strength is lower than that of the unit price,so the cost of mixed soil can be reduced by increasing the EPS size.The EPS beads with 3-5 mm in diameter are suggested to be used in the construction process,and the prescription of mixed soil can be optimized.展开更多
In the era of Big Data,we are faced with an inevitable and challenging problem of“overload information”.To alleviate this problem,it is important to use effective automatic text summarization techniques to obtain th...In the era of Big Data,we are faced with an inevitable and challenging problem of“overload information”.To alleviate this problem,it is important to use effective automatic text summarization techniques to obtain the key information quickly and efficiently from the huge amount of text.In this paper,we propose a hybrid method of extractive text summarization based on deep learning and graph ranking algorithms(ETSDG).In this method,a pre-trained deep learning model is designed to yield useful sentence embeddings.Given the association between sentences in raw documents,a traditional LexRank algorithm with fine-tuning is adopted fin ETSDG.In order to improve the performance of the extractive text summarization method,we further integrate the traditional LexRank algorithm with deep learning.Testing results on the data set DUC2004 show that ETSDG has better performance in ROUGE metrics compared with certain benchmark methods.展开更多
A hierarchical clustered BitTorrent (CBT) system is proposed to improve the file sharing perior-mance of the BitTorrent system, in which peers are grouped into clusters in a large-scale BitTorrent-hke underlying ove...A hierarchical clustered BitTorrent (CBT) system is proposed to improve the file sharing perior-mance of the BitTorrent system, in which peers are grouped into clusters in a large-scale BitTorrent-hke underlying overlay network in such a way that clusters are evenly distributed and that the peers within the cluster are relatively close to each other. A fluid model is developed to compare the performance of the proposed CBT system with the BitTorrent system, and the result shows that the CBT system can effectively improve the performance of the system. Simulation results also demonstrate that the CBT system improves the system scalabihty and efficiency while retaining the robustness and incentives of the original BitTorrent paradigm.展开更多
Different histories and cultures breed people in the West and the East, and shape their different thought patterns. The differences are manifested in languages they speak and constitute an obstacle in bi-directional u...Different histories and cultures breed people in the West and the East, and shape their different thought patterns. The differences are manifested in languages they speak and constitute an obstacle in bi-directional understanding and interpretation. In the paper, efforts are made to exemplify the differences in English and Chinese sentence-making, and explain them in terms of the different thought patterns. The author hopes to facilitate readers to have a better understanding of the 2 different peoples and languages.展开更多
Job management is a key issue in computational grids, and normally involves job definition, scheduling, executing and monitoring. However, job management in the existing grid middleware needs to be improved in terms o...Job management is a key issue in computational grids, and normally involves job definition, scheduling, executing and monitoring. However, job management in the existing grid middleware needs to be improved in terms of efficiency and flexibility. This paper addresses a flexible architecture for job management with detailed design and implementation. Frameworks for job scheduling and monitoring, as two important aspects, are also presented. The proposed job management has the advantages of reusability of job definition, flexible and automatic file operation, visual steering of file transfer and job execution, and adaptive application job scheduler. A job management wizard is designed to implement each step. Therefore, what the grid user needs to do is only to define the job by constructing necessary information at runtime. In addition, the job space is adopted to ensure the security of the job management. Experimental results showed that this approach is user-friendly and system efficient.展开更多
The Russian theatre has not been neglected in the studies on theatre history, literary criticism and dramatic arts. The paper attempts to have a look at the 1787 Drama Dictionary, the first theatre reference book publ...The Russian theatre has not been neglected in the studies on theatre history, literary criticism and dramatic arts. The paper attempts to have a look at the 1787 Drama Dictionary, the first theatre reference book published in the country (with a very long Russian title containing 35 words) as a cultural product of the Enlightenment Age produced by its representative. In the introduction to the dictionary the compiler says that the publication would help young people develop a taste for refined entertainment and reject violent leisure activities of the past, enjoy theatre and learn life moral lessons from it. He considers theatre as a powerful means of changing Russian society as has been demanded by the Enlightenment Age. The structural and sociocultural analyses of 1787 Drama Dictionary materials give us an insight into some ways of westernising Russian society through theatre and how this westernisation was reflected in the theatre terminology of the time. I have argued that Russian-European Relationships resulting in the westernisation of Russian theatre theory and practices went hand in hand with the Russian translation-adaptation of Western plays and adaptation of some Western cultural patterns of social thinking and behaviour without rejecting completely the national identity in newly-born Russian dramatic literature.展开更多
In the post-financial crisis era,China is facing dual pressure from reducing carbon emissions and external demand stagnation.The industrial structure changing is in urgent needs.The cultural and creative industries ca...In the post-financial crisis era,China is facing dual pressure from reducing carbon emissions and external demand stagnation.The industrial structure changing is in urgent needs.The cultural and creative industries can expand China's markets through creating and stimulating demands,and can reduce carbon emissions at the same time.By producing both demands and supplies,cultural and creative industries may lead the development of other industries.Since innovation plays a quite important role in the value chain,cultural and creative industries can promote the industrial upgrading and the industrial structure optimization by industrial convergence.展开更多
The relationship between cross-regional cultural landscapes does not currently receive enough attention in cultural landscape conservation. Cultural landscapes in China are faced with the crisis of fragmentation and i...The relationship between cross-regional cultural landscapes does not currently receive enough attention in cultural landscape conservation. Cultural landscapes in China are faced with the crisis of fragmentation and islanding, which makes it necessary to strengthen the idea of integrated conservation. The Great Wall cultural belt in Beijing is a cross-regional linear cultural landscape in the northwest mountainous area of Beijing. With the Great Wall as a link connecting the surrounding natural, social, and cultural resources to form a banded structure, it has the typical and practical significance of integrated conservation. Based on the theory of the cultural landscape security pattern and its ‘node – setting – connection' model, this research studies the spatial structure and shaping mechanism of the Great Wall cultural belt in Beijing from the perspective of tourist flow, using Flickr geo-tagged photos and Wikiloc tracks. The results identify the core nodes and intermediate nodes of the Great Wall cultural belt in Beijing and show that it has a multicore, multi-group hierarchical nesting structure differing from the geographic space, which has groups following the evolution orbit of ‘linear string – circumnuclear star – complete network.' To explain the differences between the cultural association network(CAN) and the geospatial network(GSN), we find that the cultural associations between nodes rely on geophysical channels, including heritage corridors and traffic passages, as physical carriers, but the nodes' attraction and their setting elements, containing natural geography environments, settlements, administrative divisions, etc., change the channel resistance, so CAN and GSN present different characteristics. From the perspective of systematic and spatial network thoughts, this study has made an attempt to adopt new analysis and research methods to achieve the integrated conservation and inheritance of linear cultural landscapes in mountainous areas.展开更多
This article describes metrics in order to quantify landscape structure. Landscape metrics are offered and designed to be as versatile as possible using several programs. In this paper it is attempted to (a) collect...This article describes metrics in order to quantify landscape structure. Landscape metrics are offered and designed to be as versatile as possible using several programs. In this paper it is attempted to (a) collect all the metrics found in the literature, (b) classify them, and (c) evaluate them through their use. An extensive investigation of the literature has been performed. Small discussion of each metric is provided to its concept, definition, use, way of calculation and in some cases contribution to the sustainable development. The frequency of used papers per each index has been taken into account. The most used to the least used six metrics have the following order: Area/Density/Edge; Isolation Proximity; Diversity; Contagion Interspersion; Shape; Connectivity. Moreover, the frequency of used papers is divided into five groups, i.e. group A till group E. Concluding, it has been provided an explanation of the results regarding to the four indices of group A and two indices from the group B.展开更多
As one of the first and most original creations of literary postmodernism, published in the year 1961, Catch-22's (1961) position in American literature remains secure. Yet its ending has been held as unconvincing ...As one of the first and most original creations of literary postmodernism, published in the year 1961, Catch-22's (1961) position in American literature remains secure. Yet its ending has been held as unconvincing ever since its publication. Taking the overall structure, tone, and the theme of the novel into consideration, this paper aims to prove the credibility of this controversial part. It consists of five sections apart from an introduction and a conclusion. Section One provides general information on the life and works of Joseph Heller. Section Two traces the impact of existentialism and the generation of black humor to clarify the literary position of Catch-22. Section Three brings out the disputative opinions on the ending part. Sections Four and Five, try to prove Yossarian's final desertion a natural and convincing ending from different perspectives: Section Four analyses how Yossarian gains an entropic vision of the cosmos; section Five studies his existential vision of physical life and searches for the immediate factors that propel Yossarian's desertion. Section five also explains the ending's change in tone and structure. The conclusion summarizes the paper and points out the social significance of the novel.展开更多
In this paper, the author focuses on the ecourbarchitectonic physical structures created after year 2000, whose artistic-esthetic value has an iconological character. An entirely new approach in formation of the facad...In this paper, the author focuses on the ecourbarchitectonic physical structures created after year 2000, whose artistic-esthetic value has an iconological character. An entirely new approach in formation of the facade and roof planes as well as of the forms of structures whose appearance resemble sculptural creations has been analyzed. The buildings from all over the world, with different functions contents, indicate a tendency of a different understanding of interpretation of physical structures and correlation with natural and artifact environment. Water surfaces and vegetative material contribute to an effective, cultural, majestic impression of engineering-technological philosophy of city building. The examples in the paper suggest the obvious need of radical changing of the way of thinking in the application of the design strategy in conceptualization of urban agglomerations, and essentially important, conceptually inspired metabolic of relationships among the spatial structures. The world entered new non-globalization trends of creation of the city memory, of the new iconically, symbolically strong, non-cliché, non-standard forms which define the contemporary cultural-artistic and historical identity of macro-ambient entities. This is a good and encouraging sign.展开更多
基金Supported by the Science Foundation of Hengyang Normal University of China(09A36)~~
文摘[Objective] To examine the grammar model based on lexical substring exac- tion for RNA secondary structure prediction. [Method] By introducing cloud model into stochastic grammar model, a machine learning algorithm suitable for the lexicalized stochastic grammar model was proposed. The word grid mode was used to extract and divide RNA sequence to acquire lexical substring, and the cloud classifier was used to search the maximum probability of each lemma which was marked as a certain sec- ondary structure type. Then, the lemma information was introduced into the training stochastic grammar process as prior information, realizing the prediction on the sec- ondary structure of RNA, and the method was tested by experiment. [Result] The experimental results showed that the prediction accuracy and searching speed of stochastic grammar cloud model were significantly improved from the prediction with simple stochastic grammar. [Conclusion] This study laid the foundation for the wide application of stochastic grammar model for RNA secondary structure prediction.
文摘The spirit of craftsmanship applies to every trade. In the context of opportunities arising from the new industrial revolution and China's transition towards high-end manufacturing, Premier Li Keqiang put forward the concept of the spirit of craftsmanship. This paper reckons that the spirit of craftsmanship can be defined from six dimensions including dedication, standard, precision, innovation, perfection and human care. In fact, the spirit of craftsmanship abounds in China, as illustrated by the examples of Tongrentang and Haier. In comparing the three manufacturing powers of Germany, Japan and the United States, this paper reveals the differences in the connotations of the spirit of craftsmanship across these countries. According to specific national conditions and development stage, China must achieve structural re-engineering of corporate organizations at the level of firms, products, divisions and modules. In a nutshell, the spirit of craftsmanship is a core component of corporate and industrial civilization and it holds an important historic position in industrial and social civilization.
文摘The Test for English Majors Band-4(TEM4) is annually taken for the second year students in China and it is based on the requirement of English teaching syllabus for English majors. This paper has collected some of students' compositions of TEM-4, and according to the score evaluation of the syllabus as well as TEM-4, the paper aims to analyze students' errors and find out their reasons behind in order to improve students' writing capacity in TEM-4.
文摘AIM:To analyze the experience within our hospital and to review the literature so as to establish the best means of diagnosis of abdominal tuberculosis. METHODS:The records of 11 patients (4 males,7 females, mean age 39 years,range 18-65 years) diagnosed with abdominal tuberculosis in Harran University Hospital between January 1996 and October 2003 were analyzed retrospectively and the literature was reviewed. RESULTS:Ascites was present in all cases.Other common findings were weight loss (81%),weakness (81%),abdominal mass (72%),abdominal pain (72%),abdominal distension (63%),anorexia (45%) and night sweat (36%).The average hemoglobin was 8.2 g/dL and the average FAR was 50 mm/h (range 30-125).Elevated levels of cancer antigen CA-125 were determined in four patients.Abdominal ultrasound showed abnormalities in all cases:ascites in all,tuboovarian mass in five,omental thickening in 3,and enlarged lymph nodes (mesenteric,para-aortic) in 2.CT scans showed ascites in all,pelvic mass in 5,retroperitoneal lymphadenopathy in 4,mesenteric stranding in 4,omental stranding in 3, bowel wall thickening in 2 and mesenteric lymphadenopathy in 2.Only one patient had a chest radiograph suggestive of a new TB lesion.Two had a positive family history of pulmonary TB.None had acid-fast bacilli (AFB) in the sputum and the tuberculin test was positive in only two.Laparotomy was performed in 6 cases,laparoscopy in 4 and ultrasound- guided fine needle aspiration in 2.In those patients subjected to operation,the findings were multiple diffuse involvement of the visceral and parietal peritoneum,white ‘miliary nodules’or plaques,enlarged lymph nodes,ascites, ‘violin string’fibrinous strands,and omental thickening. Biopsy specimens showed granulomas,while ascitic fluid showed numerous lymphocytes.Both were negative for acid-fast bacilli by staining.PCR of ascitic fluid was positive for Mycobactenum tuberculosis ( M.tuberculosis) in all cases. CONCLUSION:Abdominal TB should be considered in all cases with ascites.Our experience suggests that PCR of ascitic fluid obtained by ultrasound-guided fine needle aspiration is a reliable method for its diagnosis and should at least be attempted before surgical intervention.
基金Project(41171418)supported by the National Natural Science Foundation of China
文摘To expand knowledge on microbial communities of various metal-rich levels of mine drainage environments in Anhui province, China, the archaeal and bacterial diversities were examined using a PCR-based cloning approach. Eight acid mine water samples were collected from five areas in Tongling. Phylogenetic analyses revealed that bacteria mainly fell into ten divisions, which were Betaproteobacteria, Gammaproteobacteria, Alphaproteobacteria, Deinococcus-Thermus, Nitrospira, Firmicutes, Actinobacteria, Deltaproteobacteria, Bacteroidetes, Chloroflexi. Archaea fell into three phylogenetic divisions, Thermoplasma, Ferroplasma and Thermogymnomonas. The unweighted pair group method with arithmetic mean(UPGMA) cluster analysis based on the microbial communities’ compositions revealed that five samples shared similarity with the dominance of Meiothermus and Thermomonas. Two samples had the preponderant existence of Acidithiobacillus and Leptospirillum. The remaining sample owned higher microbial communities’ diversity with the Shannon-Weaver H up to 2.91. Canonical correlation analysis(CCA) suggested that microbial community structures had great association with p H and the concentration of Hg2+, Pb2+, Fe3+, Cl-, SO2- 4in water.
基金Supported by the Key Project of Ministry of Education of China
文摘This paper is aimed to propose an approach to predict the dynamic characteristics of ring-plate planetary indexing cam mechanism, which is a novel type of indexing mechanism that employs internal planetary transmission structure. Firstly, the geometry and structure of the mechanism are discussed and the kinematic practicability is simulated with virtual prototype design. Then a 3D finite element model of the ring-plate planetary indexing cam mechanism is developed with the commercial software of MATLAB and ANSYS. Through the finite element analysis, the natural frequencies and the corresponding mode shapes are predicted in one motion cycle. On the basis of the virtual prototype design and finite element analysis, an experimental prototype is made and tested to validate the prediction of the dynamic characteristics. The agreement between experimental results and the finite element analysis testifies that the finite element model developed is applicable to the prediction of the dynamic characteristics of this type of mechanism.
基金Project(2012JQ7013)supported by the Natural Science Foundation of Shaanxi Province,ChinaProject(QN2012025)supported by the Fundamental Research Funds for the Central Universities of ChinaProject(2011BSJJ084)supported by Research Foundation of Northwest A&F University,China
文摘Deformation characteristics of light weight soil with different EPS (expanded polystyrene) sizes were investigated by consolidation tests.The results show that the confined stress-strain relation curve is in S shape,which has a good homologous relation with e-p curve and e-lgp curve,and three types of curves reflect obvious structural characteristics of light weight soil.When cement mixed ratio and EPS volume ratio are the same for different specimens,structural strength decreases with the increase of EPS size,but compressibility indexes basically keep unchanged within the structural strength.The settlement of light weight soil can be divided into instantaneous settlement and primary consolidation settlement.It has no obvious rheology property,and 90% of total consolidation deformation can be finished in 1 min.Settlement-time relation of light weight soil can be predicted by the hyperbolic model.S-lgt curve of light weight soil is not in anti-S shape.It is proved that there is no secondary consolidation section,so consolidation coefficient cannot be obtained by time logarithm method.Structural strength and unit price decrease with the increase of EPS size,but the reducing rate of the structural strength is lower than that of the unit price,so the cost of mixed soil can be reduced by increasing the EPS size.The EPS beads with 3-5 mm in diameter are suggested to be used in the construction process,and the prescription of mixed soil can be optimized.
文摘In the era of Big Data,we are faced with an inevitable and challenging problem of“overload information”.To alleviate this problem,it is important to use effective automatic text summarization techniques to obtain the key information quickly and efficiently from the huge amount of text.In this paper,we propose a hybrid method of extractive text summarization based on deep learning and graph ranking algorithms(ETSDG).In this method,a pre-trained deep learning model is designed to yield useful sentence embeddings.Given the association between sentences in raw documents,a traditional LexRank algorithm with fine-tuning is adopted fin ETSDG.In order to improve the performance of the extractive text summarization method,we further integrate the traditional LexRank algorithm with deep learning.Testing results on the data set DUC2004 show that ETSDG has better performance in ROUGE metrics compared with certain benchmark methods.
基金the National High Technology Research and Development Programme of China(No2004AA104280,2006AA01Z172)
文摘A hierarchical clustered BitTorrent (CBT) system is proposed to improve the file sharing perior-mance of the BitTorrent system, in which peers are grouped into clusters in a large-scale BitTorrent-hke underlying overlay network in such a way that clusters are evenly distributed and that the peers within the cluster are relatively close to each other. A fluid model is developed to compare the performance of the proposed CBT system with the BitTorrent system, and the result shows that the CBT system can effectively improve the performance of the system. Simulation results also demonstrate that the CBT system improves the system scalabihty and efficiency while retaining the robustness and incentives of the original BitTorrent paradigm.
文摘Different histories and cultures breed people in the West and the East, and shape their different thought patterns. The differences are manifested in languages they speak and constitute an obstacle in bi-directional understanding and interpretation. In the paper, efforts are made to exemplify the differences in English and Chinese sentence-making, and explain them in terms of the different thought patterns. The author hopes to facilitate readers to have a better understanding of the 2 different peoples and languages.
基金Project supported by the National Natural Science Foundation of China (No. 90412014), the National Science Foundation of China for Distinguished Young Scholars (No. 60225009), and the China Next Generation Internet (CNGI) Project (No. CNGI-04-15-7A)
文摘Job management is a key issue in computational grids, and normally involves job definition, scheduling, executing and monitoring. However, job management in the existing grid middleware needs to be improved in terms of efficiency and flexibility. This paper addresses a flexible architecture for job management with detailed design and implementation. Frameworks for job scheduling and monitoring, as two important aspects, are also presented. The proposed job management has the advantages of reusability of job definition, flexible and automatic file operation, visual steering of file transfer and job execution, and adaptive application job scheduler. A job management wizard is designed to implement each step. Therefore, what the grid user needs to do is only to define the job by constructing necessary information at runtime. In addition, the job space is adopted to ensure the security of the job management. Experimental results showed that this approach is user-friendly and system efficient.
文摘The Russian theatre has not been neglected in the studies on theatre history, literary criticism and dramatic arts. The paper attempts to have a look at the 1787 Drama Dictionary, the first theatre reference book published in the country (with a very long Russian title containing 35 words) as a cultural product of the Enlightenment Age produced by its representative. In the introduction to the dictionary the compiler says that the publication would help young people develop a taste for refined entertainment and reject violent leisure activities of the past, enjoy theatre and learn life moral lessons from it. He considers theatre as a powerful means of changing Russian society as has been demanded by the Enlightenment Age. The structural and sociocultural analyses of 1787 Drama Dictionary materials give us an insight into some ways of westernising Russian society through theatre and how this westernisation was reflected in the theatre terminology of the time. I have argued that Russian-European Relationships resulting in the westernisation of Russian theatre theory and practices went hand in hand with the Russian translation-adaptation of Western plays and adaptation of some Western cultural patterns of social thinking and behaviour without rejecting completely the national identity in newly-born Russian dramatic literature.
文摘In the post-financial crisis era,China is facing dual pressure from reducing carbon emissions and external demand stagnation.The industrial structure changing is in urgent needs.The cultural and creative industries can expand China's markets through creating and stimulating demands,and can reduce carbon emissions at the same time.By producing both demands and supplies,cultural and creative industries may lead the development of other industries.Since innovation plays a quite important role in the value chain,cultural and creative industries can promote the industrial upgrading and the industrial structure optimization by industrial convergence.
基金supported by the SinoGerman Center(the National Natural Science Foundation of China and the German Science Foundation)(Grant No.GZ1201)the PekingUniversity President’s Undergraduate Research Fellowship(PURF,2016–2017)
文摘The relationship between cross-regional cultural landscapes does not currently receive enough attention in cultural landscape conservation. Cultural landscapes in China are faced with the crisis of fragmentation and islanding, which makes it necessary to strengthen the idea of integrated conservation. The Great Wall cultural belt in Beijing is a cross-regional linear cultural landscape in the northwest mountainous area of Beijing. With the Great Wall as a link connecting the surrounding natural, social, and cultural resources to form a banded structure, it has the typical and practical significance of integrated conservation. Based on the theory of the cultural landscape security pattern and its ‘node – setting – connection' model, this research studies the spatial structure and shaping mechanism of the Great Wall cultural belt in Beijing from the perspective of tourist flow, using Flickr geo-tagged photos and Wikiloc tracks. The results identify the core nodes and intermediate nodes of the Great Wall cultural belt in Beijing and show that it has a multicore, multi-group hierarchical nesting structure differing from the geographic space, which has groups following the evolution orbit of ‘linear string – circumnuclear star – complete network.' To explain the differences between the cultural association network(CAN) and the geospatial network(GSN), we find that the cultural associations between nodes rely on geophysical channels, including heritage corridors and traffic passages, as physical carriers, but the nodes' attraction and their setting elements, containing natural geography environments, settlements, administrative divisions, etc., change the channel resistance, so CAN and GSN present different characteristics. From the perspective of systematic and spatial network thoughts, this study has made an attempt to adopt new analysis and research methods to achieve the integrated conservation and inheritance of linear cultural landscapes in mountainous areas.
文摘This article describes metrics in order to quantify landscape structure. Landscape metrics are offered and designed to be as versatile as possible using several programs. In this paper it is attempted to (a) collect all the metrics found in the literature, (b) classify them, and (c) evaluate them through their use. An extensive investigation of the literature has been performed. Small discussion of each metric is provided to its concept, definition, use, way of calculation and in some cases contribution to the sustainable development. The frequency of used papers per each index has been taken into account. The most used to the least used six metrics have the following order: Area/Density/Edge; Isolation Proximity; Diversity; Contagion Interspersion; Shape; Connectivity. Moreover, the frequency of used papers is divided into five groups, i.e. group A till group E. Concluding, it has been provided an explanation of the results regarding to the four indices of group A and two indices from the group B.
文摘As one of the first and most original creations of literary postmodernism, published in the year 1961, Catch-22's (1961) position in American literature remains secure. Yet its ending has been held as unconvincing ever since its publication. Taking the overall structure, tone, and the theme of the novel into consideration, this paper aims to prove the credibility of this controversial part. It consists of five sections apart from an introduction and a conclusion. Section One provides general information on the life and works of Joseph Heller. Section Two traces the impact of existentialism and the generation of black humor to clarify the literary position of Catch-22. Section Three brings out the disputative opinions on the ending part. Sections Four and Five, try to prove Yossarian's final desertion a natural and convincing ending from different perspectives: Section Four analyses how Yossarian gains an entropic vision of the cosmos; section Five studies his existential vision of physical life and searches for the immediate factors that propel Yossarian's desertion. Section five also explains the ending's change in tone and structure. The conclusion summarizes the paper and points out the social significance of the novel.
文摘In this paper, the author focuses on the ecourbarchitectonic physical structures created after year 2000, whose artistic-esthetic value has an iconological character. An entirely new approach in formation of the facade and roof planes as well as of the forms of structures whose appearance resemble sculptural creations has been analyzed. The buildings from all over the world, with different functions contents, indicate a tendency of a different understanding of interpretation of physical structures and correlation with natural and artifact environment. Water surfaces and vegetative material contribute to an effective, cultural, majestic impression of engineering-technological philosophy of city building. The examples in the paper suggest the obvious need of radical changing of the way of thinking in the application of the design strategy in conceptualization of urban agglomerations, and essentially important, conceptually inspired metabolic of relationships among the spatial structures. The world entered new non-globalization trends of creation of the city memory, of the new iconically, symbolically strong, non-cliché, non-standard forms which define the contemporary cultural-artistic and historical identity of macro-ambient entities. This is a good and encouraging sign.