In order to solve the semantic irreconcilable problems caused by contextual differences during the process of ontology integration, a context-driven reconciliation mechanism is proposed. The mechanism is based on the ...In order to solve the semantic irreconcilable problems caused by contextual differences during the process of ontology integration, a context-driven reconciliation mechanism is proposed. The mechanism is based on the previous work about a context-based formalism-Context-SHOIQ (D + ) DL, which is used for explicitly representing context of ontology by adopting the description logic and the category theory. The formalism is extended by adding four migration rules (InclusionRule, SelectionRule, PreferenceRule, and MappingRule), that are used to specify what should be imported into the IntegrativeContext, and three related contextual integration operations of increasing interoperability (import, partial reconciliation, and full reconciliation). While not exhaustive, the mechanism is sufficient for solving the five types of semantic irreconcilable problems that are discussed, and favors integration of ontologies from one context to another.展开更多
A cDNA library was successfully constructed from Anip973, a human lung adenocarcinoma cell line with high metastatic potential. NIH3T3 cells were stably transfected using this cDNA library and screened for morphologic...A cDNA library was successfully constructed from Anip973, a human lung adenocarcinoma cell line with high metastatic potential. NIH3T3 cells were stably transfected using this cDNA library and screened for morphological changes in a soft agar assay. Genomic DNA was isolated from putative clones and the integrated sequence was retrieved by PCR and sequencing. Three known genes, ribosomal protein L23, hypothetical protein FLJ22104, and serine protease inhibitor, kazal type 6 and a number of 5'-terminally truncated sequences were identified. Furthermore, cells transfected with ribosomal protein L23 was highly invasive compared with the empty vector as control (P 〈 0.02). These results indicate that the expression cloning of cDNA libraries in NIH3T3 cells and subsequent screening for loss of contact inhibition in soft agar is a viable tool for identifying tumor-related genes and ribosomal protein L23 gene plays a role in cell movement and metastasis.展开更多
This paper analyzes the main elements in NS network simulator, makes adetailed view of dataflow management in a link, a node, and an agent, respectively, and introducesthe information described by its trace file. Base...This paper analyzes the main elements in NS network simulator, makes adetailed view of dataflow management in a link, a node, and an agent, respectively, and introducesthe information described by its trace file. Based on the analysis of transportation and treatmentof different packets in NS, a dataflow state machine is proposed with its states exchange triggeringevents and a dataflow analyzer is designed and implemented according to it. As the machine statefunctions, the analyzer can make statistic of total transportation flux of a specified dataflow andoffer a general fluctuation diagram. Finally, a concrete example is used to test its performance.展开更多
Transitional cell carcinoma (TCC) of the ovary is a rare and recently recognized subtype of ovarian epithelial cancer. We presented the first case report from our Institute (Sheri Kashmir Instiute of Medical Scienc...Transitional cell carcinoma (TCC) of the ovary is a rare and recently recognized subtype of ovarian epithelial cancer. We presented the first case report from our Institute (Sheri Kashmir Instiute of Medical Sciences, Srinagar, India), which was initially rnisdiagnosed as stromal cell carcinoma (granulosa cell tumour), and on review of histopathology with immunohistochemistry, the diagnosis of TCC of the ovary was established. The aim of this article was to describe the typical case of primary TCC of the ovary and to review the literature for information on TCC management.展开更多
The purpose of this study is to investigate the role of bolt profile configuration in load transfer capacity between the bolt and grout.Therefore,five types of rock bolts are used with different profiles.The rock bolt...The purpose of this study is to investigate the role of bolt profile configuration in load transfer capacity between the bolt and grout.Therefore,five types of rock bolts are used with different profiles.The rock bolts are modeled by ANSYS software.Models show that profile rock bolt T_3 and T_ with load capacity 180 and 195 kN in the jointed rocks,are the optimum profiles.Finally,the performances of the selected profiles are examined in Tabas Coal Mine by FLAC software.There is good subscription between the results of numerical modeling and instrumentation reading such as tells tale,sonic extensometer and strain gauge rock bolt.According to the finding of this study,the proposed pattern of rock bolts,on 7 + 6 patterns per meter with 2 flexi bolt(4 m) for support gate road.展开更多
As one of the Confucian classics, Shijing (i~) occupies a pivotal position in the development of Chinese culture. This paper makes a comparative study on the English translation of plant and animal images in Shijing...As one of the Confucian classics, Shijing (i~) occupies a pivotal position in the development of Chinese culture. This paper makes a comparative study on the English translation of plant and animal images in Shijing, trying to reveal the cultural connotations in them and to suggest some translation strategies for the correct transference of cultural implications in plant and animal images in the poems of this ancient book.展开更多
The present study examines language barriers experienced by Ethiopian women in Netanya, Israel. It aims at providing data on both the existing literature on the subject as well as on the empirical results based on ans...The present study examines language barriers experienced by Ethiopian women in Netanya, Israel. It aims at providing data on both the existing literature on the subject as well as on the empirical results based on answers to a questionnaire. In particular, this paper looks into the difficulties linked to the Hebrew language with regard to the integration of these women, which is regarded as a hindrance towards a better and thorough integration in the city of Netanya. This language barrier affects all aspects of their daily life particularly in the fields of education and employment. This investigation into language barriers is seen through the eyes of one Ethiopian woman within her three-generation family. In addition to the disadvantage linked to language, this survey points out the discrimination which this minority population, especially women faces.展开更多
Translational discourse requires at least three participants, therefore it is suggested to consider the universal model of the picture of the world, according to which it is much easier for a translator to combine the...Translational discourse requires at least three participants, therefore it is suggested to consider the universal model of the picture of the world, according to which it is much easier for a translator to combine the pictures of the world of an addressee and an author. An addressee is a mental image existing in the mind of an addresser during the creative process. Having defined its parameters, a translator has an opportunity to deliver the thought of an addresser to an addressee as accurately as possible and to select the means of expression that are clear to an addressee. The type of an addressee correlates with "the relation to the new".展开更多
Saffron is the most precious and expensive agricultural product. A dehydration treatment is necessary to convert Crocus sativus L. stigmas into saffron spice. To the best of our knowledge, no information on mass trans...Saffron is the most precious and expensive agricultural product. A dehydration treatment is necessary to convert Crocus sativus L. stigmas into saffron spice. To the best of our knowledge, no information on mass transfer parameters of saffron stigmas is available in the literature. This study aimed at investigating the moisture transfer parameters and quality attributes of saffron stigmas under infrared treatment at different temperatures(60,70, …, 110 ℃). It was observed that the dehydration process of the samples occurred in a short accelerating rate period at the start followed by a falling rate period. The effective moisture diffusivity and convective mass transfer coefficient were determined by using the Dincer and Dost model. The diffusivity values varied from1.1103 × 10^-10m^2·s^-1to 4.1397 × 10^-10m^2·s^-1 and mass transfer coefficient varied in the range of 2.6433 × 10^-7–8.7203 × 10^-7m·s^-1. The activation energy was obtained to be 27.86 kJ·mol^-1. The quality assessment results showed that the total crocin content increased, when the temperature increased up to90 ℃ but, in higher temperatures, the amount of crocin decreased slightly. The total safranal content of the samples decreased slightly when drying temperature increased from 60 ℃ to 70 ℃ and then continuously increased up to 110 ℃. Also, the amount of picrocrocin increased from 83.1 to 93.3 as the drying temperature increased from 60 ℃ to 100 ℃.展开更多
In this paper, we conduct research on the college English teaching emphasis from the cultural migration and transformation ofthinking perspectives. College English has long been in for the college English subject stat...In this paper, we conduct research on the college English teaching emphasis from the cultural migration and transformation ofthinking perspectives. College English has long been in for the college English subject status. However, college English as a multidisciplinary,interdisciplinary research in the field of discipline construction, it seems, are still stay in the linguistics, language knowledge in academiccharacteristics for its stage of development. Reform of basic college English teaching, the teacher is still teaching main body, is the teaching oflanguage knowledge, since teachers play an important role in language teaching, the teacher wants to penetrate cultural knowledge in teachingand we must strengthen their own culture. Under this basis, this paper proposes the novel ideals on the related issues that will be meaningful andinnovative.展开更多
AIM: To determine the factors affecting mortality in pa- tients who developed graft-versus-host disease (GvHD) after liver transplantation (LT). METHODS: We performed a review of studies of GvHD following LT pub...AIM: To determine the factors affecting mortality in pa- tients who developed graft-versus-host disease (GvHD) after liver transplantation (LT). METHODS: We performed a review of studies of GvHD following LT published in the English literature and ac- cessed the PubMed, Medline, EBSCO, EMBASE, and Google Scholar databases. Using relevant search phras- es, 88 articles were identified. Of these, 62 articles con- raining most of the study parameters were considered eligible for the study. Risk factors were first examined using a univariate Kaplan-Meier model, and variables with a significant association (P 〈 0.05) were then sub- jected to multivariate analyses using a Cox proportional- hazards model. RESULTS: The 61 articles reported 87 patients, 58 male and 29 female, mean age, 40.4 ± 15.5 years (range: 8 mo to 74 years), who met the inclusion criteria for the present study. Deaths occurred in 59 (67.8%) patients, whereas 28 (32.2%) survived after a mean follow-up period of 280.8 ± 316.2 d (range: 27-2285 d). Among the most frequent symptoms were rash (94.2%), fever (66.6%), diarrhea (54%), and pancytopenia (54%). The average time period between LT and first symptom on- set was 60.6 ± 190.1 d (range: 2-1865 d). The Kaplan- Meier analysis revealed that pancytopenia (42.8% vs 59.3%, P = 0.03), diarrhea (39.2% vs 61.0%, P = 0.04), age difference between the recipient and the donor (14.6 ± 3.1 years vs 22.6 ± 2.7 years, P 〈 0.0001), and time From first symptom occurrence to diagnosis or treatment (13.3 ± 2.6 mo vs 15.0 ± 2.3 mo, P 〈 0.0001) were significant factors affecting mortality, whereas age, sex, presence of rash and fever, use of immunosuppressive agents, acute rejection before GvHD, etiological causes, time of onset, and donor type were not associated with mortality risk. The Cox proportional-hazards model, de- termined that an age difference between the recipient and donor was an independent risk Factor (P = 0.03; hazard ratio, 7.395, 95% confidence interval, 1.2-46.7). CONCLUSION: This study showed that an age differ- ence between the recipient and donor is an independent risk factor for mortality in patients who develop GvHD after LT.展开更多
In order to improve the performance of peer-to-peer files sharing system under mobile distributed en- vironments, a novel always-optimally-coordinated (AOC) criterion and corresponding candidate selection algorithm ...In order to improve the performance of peer-to-peer files sharing system under mobile distributed en- vironments, a novel always-optimally-coordinated (AOC) criterion and corresponding candidate selection algorithm are proposed in this paper. Compared with the traditional min-hops criterion, the new approach introduces a fuzzy knowledge combination theory to investigate several important factors that influence files transfer success rate and efficiency. Whereas the min-hops based protocols only ask the nearest candidate peer for desired files, the selection algorithm based on AOC comprehensively considers users' preferences and network requirements with flexible balancing rules. Furthermore, its advantage also expresses in the independence of specified resource discovering protocols, allowing for scalability. The simulation results show that when using the AOC based peer selection algorithm, system performance is much better than the rain-hops scheme, with files successful transfer rate improved more than 50% and transfer time re- duced at least 20%.展开更多
. A dialect refers to a local variation of a language which is distinguished fi'om variants of the same language in grammar, lexis, or pronuneiation. A dialect plays an important role in second language learning. It .... A dialect refers to a local variation of a language which is distinguished fi'om variants of the same language in grammar, lexis, or pronuneiation. A dialect plays an important role in second language learning. It can be a positive element as well as negative one in second language learning. Pingdu dialect as a kind of mandarin variation has its own structure and pronunciation rules. By contrastive analysis, we study the negative transfer of Pingdu Dialect on English pronunciation. We mainly concentrate on how two initials "s" and "z" in pinyin which sound like two English consonants/0 /and/6/influence the pronunciation of English consonants/s/and/z/. We also fred the countermeasures to overcome negative transfer of dialect on the acquisition of English pronunciation, thereby helping EFL learners in certain area of China acquire accurate English pronuneiations and enhance the ability of intercultural eommunication.展开更多
AIM: To elaborate the clinicopathologic features of colorectal cancer-related pyogenic liver abscess (PLA). METHODS: Reported cases of colorectal cancer-related PLAs were collected from the literature published up to ...AIM: To elaborate the clinicopathologic features of colorectal cancer-related pyogenic liver abscess (PLA). METHODS: Reported cases of colorectal cancer-related PLAs were collected from the literature published up to October 2011 and evaluated for their clinicopathologic features. Data of collected cases included demographics, clinical presentation, microbial findings and treatment. Categorical variables were compared by 2 analysis and continuous variables were evaluated using Student's t test. RESULTS: A total 96 cases of colorectal cancer-related PLA were collected from the previous literature. Most patients (60%) were male and 40% cases occurred in the age group of 61-70 years. Apart from some special types of PLA, there were significant differences in the microbiological spectrum between Eastern Asia and non-Eastern Asian countries, which implied different risk factors and courses of the disease. Gram negative bacteria especially Klebsiella pneumoniae (K. pneu- moniae ) PLA was predominant in Eastern Asia (80.0%) in contrast to non-Eastern Asian countries (P < 0.01). Meanwhile, most of the Eastern Asian patients exhibited smaller size of liver abscess and atypical presentation. Sigmoid colon and rectum (72.73%) were the main sites of tumor in Eastern Asian patients, whereas tumor sites were uneven among most of the non-Easter Asian PLA patients. CONCLUSION:K. pneumoniae PLA was strongly associated with colorectal cancer, especially those occurring in sigmoid colon and rectum, in elderly Eastern Asian male patients.展开更多
The negative pragmatic transfer in second language acquisition has been seen as the major cause of pragmatic failure. In fact, the constant experiencing of negative pragmatic transfer is an active process of learning....The negative pragmatic transfer in second language acquisition has been seen as the major cause of pragmatic failure. In fact, the constant experiencing of negative pragmatic transfer is an active process of learning. The paper investigates the characteristics and classification of the negative pragmatic transfer so that people will have an objective attitude towards it. The author also provides suggestions and strategies so as to help the foreign language learners to establish the confidence in the foreign language study and intercultural communication.展开更多
The role of geomorphic habitat type, drift cell scale, and geographic scale in defining fish use of nearshore habitats is poorly known, particularly for Pacific salmon and their prey. In this study, key areas of nears...The role of geomorphic habitat type, drift cell scale, and geographic scale in defining fish use of nearshore habitats is poorly known, particularly for Pacific salmon and their prey. In this study, key areas of nearshore habitat in central and western Strait of Juan de Fuca were categorized by geomorphic habitat type and assessed for fish use within a degraded (Elwha) and intact comparative drift cells over a one year period. Juvenile Chinook and coho salmon were also sampled for genetic analysis to define regional dispersal patterns. Key findings are: (1) Ecological function of the area's nearshore is complex, with very strong seasonal variation in fish use both within and across GMHT (geomorphic habitat type); (2) GMHT link to nearshore function for fish use differs depending on the fish species and time of year. Surf smelt and sand lance were the most abundant. And they were seasonally used embayed, spit, and bluff shorelines more than lower rivers. Juvenile Chinook, coho, and chum salmon occurred in much lower density than forage fish species, and used lower rivers more than other GMHTs; (3) When GMHTs were combined and analyzed at the drift cell scale, the degraded drift cell had different ecological patterns than the intact drift cell; (4) Cross regional juvenile fish use of nearshore is an important component of habitat use: juvenile Chinook and coho from as far away as the Columbia River Oregon and Klamath River California utilize central Strait of Juan de Fuca shorelines. Forage fish species may do so as well. Drift cell and cross regional scales are therefore most important for accurately defining nearshore ecological function, management, and restoration actions.展开更多
文摘In order to solve the semantic irreconcilable problems caused by contextual differences during the process of ontology integration, a context-driven reconciliation mechanism is proposed. The mechanism is based on the previous work about a context-based formalism-Context-SHOIQ (D + ) DL, which is used for explicitly representing context of ontology by adopting the description logic and the category theory. The formalism is extended by adding four migration rules (InclusionRule, SelectionRule, PreferenceRule, and MappingRule), that are used to specify what should be imported into the IntegrativeContext, and three related contextual integration operations of increasing interoperability (import, partial reconciliation, and full reconciliation). While not exhaustive, the mechanism is sufficient for solving the five types of semantic irreconcilable problems that are discussed, and favors integration of ontologies from one context to another.
基金This work was supported by Returning Scholars Fund of Heilongjiang Province (No. LC04C02) the Department of Education Overseas Researcher Fund of Heilongjiang Province (No. 1054HZ013).
文摘A cDNA library was successfully constructed from Anip973, a human lung adenocarcinoma cell line with high metastatic potential. NIH3T3 cells were stably transfected using this cDNA library and screened for morphological changes in a soft agar assay. Genomic DNA was isolated from putative clones and the integrated sequence was retrieved by PCR and sequencing. Three known genes, ribosomal protein L23, hypothetical protein FLJ22104, and serine protease inhibitor, kazal type 6 and a number of 5'-terminally truncated sequences were identified. Furthermore, cells transfected with ribosomal protein L23 was highly invasive compared with the empty vector as control (P 〈 0.02). These results indicate that the expression cloning of cDNA libraries in NIH3T3 cells and subsequent screening for loss of contact inhibition in soft agar is a viable tool for identifying tumor-related genes and ribosomal protein L23 gene plays a role in cell movement and metastasis.
基金The Natural Science Foundation of Jiangsu Province (BK2001205).
文摘This paper analyzes the main elements in NS network simulator, makes adetailed view of dataflow management in a link, a node, and an agent, respectively, and introducesthe information described by its trace file. Based on the analysis of transportation and treatmentof different packets in NS, a dataflow state machine is proposed with its states exchange triggeringevents and a dataflow analyzer is designed and implemented according to it. As the machine statefunctions, the analyzer can make statistic of total transportation flux of a specified dataflow andoffer a general fluctuation diagram. Finally, a concrete example is used to test its performance.
文摘Transitional cell carcinoma (TCC) of the ovary is a rare and recently recognized subtype of ovarian epithelial cancer. We presented the first case report from our Institute (Sheri Kashmir Instiute of Medical Sciences, Srinagar, India), which was initially rnisdiagnosed as stromal cell carcinoma (granulosa cell tumour), and on review of histopathology with immunohistochemistry, the diagnosis of TCC of the ovary was established. The aim of this article was to describe the typical case of primary TCC of the ovary and to review the literature for information on TCC management.
文摘The purpose of this study is to investigate the role of bolt profile configuration in load transfer capacity between the bolt and grout.Therefore,five types of rock bolts are used with different profiles.The rock bolts are modeled by ANSYS software.Models show that profile rock bolt T_3 and T_ with load capacity 180 and 195 kN in the jointed rocks,are the optimum profiles.Finally,the performances of the selected profiles are examined in Tabas Coal Mine by FLAC software.There is good subscription between the results of numerical modeling and instrumentation reading such as tells tale,sonic extensometer and strain gauge rock bolt.According to the finding of this study,the proposed pattern of rock bolts,on 7 + 6 patterns per meter with 2 flexi bolt(4 m) for support gate road.
文摘As one of the Confucian classics, Shijing (i~) occupies a pivotal position in the development of Chinese culture. This paper makes a comparative study on the English translation of plant and animal images in Shijing, trying to reveal the cultural connotations in them and to suggest some translation strategies for the correct transference of cultural implications in plant and animal images in the poems of this ancient book.
文摘The present study examines language barriers experienced by Ethiopian women in Netanya, Israel. It aims at providing data on both the existing literature on the subject as well as on the empirical results based on answers to a questionnaire. In particular, this paper looks into the difficulties linked to the Hebrew language with regard to the integration of these women, which is regarded as a hindrance towards a better and thorough integration in the city of Netanya. This language barrier affects all aspects of their daily life particularly in the fields of education and employment. This investigation into language barriers is seen through the eyes of one Ethiopian woman within her three-generation family. In addition to the disadvantage linked to language, this survey points out the discrimination which this minority population, especially women faces.
文摘Translational discourse requires at least three participants, therefore it is suggested to consider the universal model of the picture of the world, according to which it is much easier for a translator to combine the pictures of the world of an addressee and an author. An addressee is a mental image existing in the mind of an addresser during the creative process. Having defined its parameters, a translator has an opportunity to deliver the thought of an addresser to an addressee as accurately as possible and to select the means of expression that are clear to an addressee. The type of an addressee correlates with "the relation to the new".
文摘Saffron is the most precious and expensive agricultural product. A dehydration treatment is necessary to convert Crocus sativus L. stigmas into saffron spice. To the best of our knowledge, no information on mass transfer parameters of saffron stigmas is available in the literature. This study aimed at investigating the moisture transfer parameters and quality attributes of saffron stigmas under infrared treatment at different temperatures(60,70, …, 110 ℃). It was observed that the dehydration process of the samples occurred in a short accelerating rate period at the start followed by a falling rate period. The effective moisture diffusivity and convective mass transfer coefficient were determined by using the Dincer and Dost model. The diffusivity values varied from1.1103 × 10^-10m^2·s^-1to 4.1397 × 10^-10m^2·s^-1 and mass transfer coefficient varied in the range of 2.6433 × 10^-7–8.7203 × 10^-7m·s^-1. The activation energy was obtained to be 27.86 kJ·mol^-1. The quality assessment results showed that the total crocin content increased, when the temperature increased up to90 ℃ but, in higher temperatures, the amount of crocin decreased slightly. The total safranal content of the samples decreased slightly when drying temperature increased from 60 ℃ to 70 ℃ and then continuously increased up to 110 ℃. Also, the amount of picrocrocin increased from 83.1 to 93.3 as the drying temperature increased from 60 ℃ to 100 ℃.
文摘In this paper, we conduct research on the college English teaching emphasis from the cultural migration and transformation ofthinking perspectives. College English has long been in for the college English subject status. However, college English as a multidisciplinary,interdisciplinary research in the field of discipline construction, it seems, are still stay in the linguistics, language knowledge in academiccharacteristics for its stage of development. Reform of basic college English teaching, the teacher is still teaching main body, is the teaching oflanguage knowledge, since teachers play an important role in language teaching, the teacher wants to penetrate cultural knowledge in teachingand we must strengthen their own culture. Under this basis, this paper proposes the novel ideals on the related issues that will be meaningful andinnovative.
文摘AIM: To determine the factors affecting mortality in pa- tients who developed graft-versus-host disease (GvHD) after liver transplantation (LT). METHODS: We performed a review of studies of GvHD following LT published in the English literature and ac- cessed the PubMed, Medline, EBSCO, EMBASE, and Google Scholar databases. Using relevant search phras- es, 88 articles were identified. Of these, 62 articles con- raining most of the study parameters were considered eligible for the study. Risk factors were first examined using a univariate Kaplan-Meier model, and variables with a significant association (P 〈 0.05) were then sub- jected to multivariate analyses using a Cox proportional- hazards model. RESULTS: The 61 articles reported 87 patients, 58 male and 29 female, mean age, 40.4 ± 15.5 years (range: 8 mo to 74 years), who met the inclusion criteria for the present study. Deaths occurred in 59 (67.8%) patients, whereas 28 (32.2%) survived after a mean follow-up period of 280.8 ± 316.2 d (range: 27-2285 d). Among the most frequent symptoms were rash (94.2%), fever (66.6%), diarrhea (54%), and pancytopenia (54%). The average time period between LT and first symptom on- set was 60.6 ± 190.1 d (range: 2-1865 d). The Kaplan- Meier analysis revealed that pancytopenia (42.8% vs 59.3%, P = 0.03), diarrhea (39.2% vs 61.0%, P = 0.04), age difference between the recipient and the donor (14.6 ± 3.1 years vs 22.6 ± 2.7 years, P 〈 0.0001), and time From first symptom occurrence to diagnosis or treatment (13.3 ± 2.6 mo vs 15.0 ± 2.3 mo, P 〈 0.0001) were significant factors affecting mortality, whereas age, sex, presence of rash and fever, use of immunosuppressive agents, acute rejection before GvHD, etiological causes, time of onset, and donor type were not associated with mortality risk. The Cox proportional-hazards model, de- termined that an age difference between the recipient and donor was an independent risk Factor (P = 0.03; hazard ratio, 7.395, 95% confidence interval, 1.2-46.7). CONCLUSION: This study showed that an age differ- ence between the recipient and donor is an independent risk factor for mortality in patients who develop GvHD after LT.
基金supported by the National Nature Science Foundation of China(No.60672124)the National High Technology Research and Development Programme the of China(No.2007AA01Z221)
文摘In order to improve the performance of peer-to-peer files sharing system under mobile distributed en- vironments, a novel always-optimally-coordinated (AOC) criterion and corresponding candidate selection algorithm are proposed in this paper. Compared with the traditional min-hops criterion, the new approach introduces a fuzzy knowledge combination theory to investigate several important factors that influence files transfer success rate and efficiency. Whereas the min-hops based protocols only ask the nearest candidate peer for desired files, the selection algorithm based on AOC comprehensively considers users' preferences and network requirements with flexible balancing rules. Furthermore, its advantage also expresses in the independence of specified resource discovering protocols, allowing for scalability. The simulation results show that when using the AOC based peer selection algorithm, system performance is much better than the rain-hops scheme, with files successful transfer rate improved more than 50% and transfer time re- duced at least 20%.
文摘. A dialect refers to a local variation of a language which is distinguished fi'om variants of the same language in grammar, lexis, or pronuneiation. A dialect plays an important role in second language learning. It can be a positive element as well as negative one in second language learning. Pingdu dialect as a kind of mandarin variation has its own structure and pronunciation rules. By contrastive analysis, we study the negative transfer of Pingdu Dialect on English pronunciation. We mainly concentrate on how two initials "s" and "z" in pinyin which sound like two English consonants/0 /and/6/influence the pronunciation of English consonants/s/and/z/. We also fred the countermeasures to overcome negative transfer of dialect on the acquisition of English pronunciation, thereby helping EFL learners in certain area of China acquire accurate English pronuneiations and enhance the ability of intercultural eommunication.
基金Supported by The National Natural Science Foundation of China, No. 30872482 and No. 81072051
文摘AIM: To elaborate the clinicopathologic features of colorectal cancer-related pyogenic liver abscess (PLA). METHODS: Reported cases of colorectal cancer-related PLAs were collected from the literature published up to October 2011 and evaluated for their clinicopathologic features. Data of collected cases included demographics, clinical presentation, microbial findings and treatment. Categorical variables were compared by 2 analysis and continuous variables were evaluated using Student's t test. RESULTS: A total 96 cases of colorectal cancer-related PLA were collected from the previous literature. Most patients (60%) were male and 40% cases occurred in the age group of 61-70 years. Apart from some special types of PLA, there were significant differences in the microbiological spectrum between Eastern Asia and non-Eastern Asian countries, which implied different risk factors and courses of the disease. Gram negative bacteria especially Klebsiella pneumoniae (K. pneu- moniae ) PLA was predominant in Eastern Asia (80.0%) in contrast to non-Eastern Asian countries (P < 0.01). Meanwhile, most of the Eastern Asian patients exhibited smaller size of liver abscess and atypical presentation. Sigmoid colon and rectum (72.73%) were the main sites of tumor in Eastern Asian patients, whereas tumor sites were uneven among most of the non-Easter Asian PLA patients. CONCLUSION:K. pneumoniae PLA was strongly associated with colorectal cancer, especially those occurring in sigmoid colon and rectum, in elderly Eastern Asian male patients.
文摘The negative pragmatic transfer in second language acquisition has been seen as the major cause of pragmatic failure. In fact, the constant experiencing of negative pragmatic transfer is an active process of learning. The paper investigates the characteristics and classification of the negative pragmatic transfer so that people will have an objective attitude towards it. The author also provides suggestions and strategies so as to help the foreign language learners to establish the confidence in the foreign language study and intercultural communication.
文摘The role of geomorphic habitat type, drift cell scale, and geographic scale in defining fish use of nearshore habitats is poorly known, particularly for Pacific salmon and their prey. In this study, key areas of nearshore habitat in central and western Strait of Juan de Fuca were categorized by geomorphic habitat type and assessed for fish use within a degraded (Elwha) and intact comparative drift cells over a one year period. Juvenile Chinook and coho salmon were also sampled for genetic analysis to define regional dispersal patterns. Key findings are: (1) Ecological function of the area's nearshore is complex, with very strong seasonal variation in fish use both within and across GMHT (geomorphic habitat type); (2) GMHT link to nearshore function for fish use differs depending on the fish species and time of year. Surf smelt and sand lance were the most abundant. And they were seasonally used embayed, spit, and bluff shorelines more than lower rivers. Juvenile Chinook, coho, and chum salmon occurred in much lower density than forage fish species, and used lower rivers more than other GMHTs; (3) When GMHTs were combined and analyzed at the drift cell scale, the degraded drift cell had different ecological patterns than the intact drift cell; (4) Cross regional juvenile fish use of nearshore is an important component of habitat use: juvenile Chinook and coho from as far away as the Columbia River Oregon and Klamath River California utilize central Strait of Juan de Fuca shorelines. Forage fish species may do so as well. Drift cell and cross regional scales are therefore most important for accurately defining nearshore ecological function, management, and restoration actions.