101 research outputs found
Un dictionnaire de régimes verbaux en mandarin
Ce mĂ©moire sâinsĂšre dans le projet GenDR, un rĂ©alisateur de texte profond multilingue qui modĂ©lise lâinterface sĂ©mantique-syntaxe pour la gĂ©nĂ©ration automatique de texte (GAT). Dans le cadre de la GAT, les ressources lexicales sont de premiĂšre nĂ©cessitĂ© pour que le systĂšme puisse transformer des donnĂ©es nonlinguistiques en langage naturel. Ces ressources lexicales dĂ©terminent dans une certaine mesure la prĂ©cision et la flexibilitĂ© des phrases gĂ©nĂ©rĂ©es. En raison de lâimprĂ©visibilitĂ© du rĂ©gime des verbes et du rĂŽle central que les verbes jouent dans un Ă©noncĂ©, une ressource lexicale qui dĂ©crit le rĂ©gime des verbes revĂȘt une importance particuliĂšre pour gĂ©nĂ©rer du texte le plus prĂ©cis et le plus naturel possible.
Nous avons tentĂ© de crĂ©er un dictionnaire de rĂ©gimes verbaux en mandarin. Ce genre de ressource lexicale est toujours une lacune dans le domaine de la GAT en mandarin. En nous basant sur la base de donnĂ©es Mandarin VerbNet, nous avons eu recours Ă Python pour extraire les adpositions rĂ©gies et crĂ©er notre dictionnaire. Il sâagit dâun dictionnaire dynamique, dont le contenu peut ĂȘtre paramĂ©trĂ© en fonction des objectifs de lâutilisateur.This work fits into the GenDR project, a multilingual deep realizer which models the semantics-syntax interface for natural language generation (NLG). In NLG, lexical resources are essential to transform non-linguistic data into natural language. To a certain extent, the lexical resources used determine the accuracy and flexibility of the sentences generated by a realizer. Due to the unpredictability of verbsâ syntactic behaviour and the central role that verbs play in an utterance, a lexical resource which describes the government patterns of verbs is key to generating the most precise and natural text possible.
We aim to create a dictionary of verbsâ government patterns in Mandarin. This kind of lexical resource is still missing for NLG in Mandarin. Based on the Mandarin VerbNet database, we used Python to extract information about adpositions and to create our dictionary. This is a dynamic dictionary whose content can be parameterized according to the userâs needs
Food safety analysis and management of Shiga toxin-producing Escherichia coli in edible agricultural products and kitchen
The sources and transmission routes of Shiga toxin-producing Escherichia coli (STEC) in edible agricultural products are analyzed. And the relationship between STEC contamination and food safety in home kitchen is discussed. The current supervision of STEC in edible agricultural products around the world is introduced. The solution and suggestion for the control of STEC in the home kitchen of China are proposed
Molecular Ecology of Pyrethroid Knockdown Resistance in Culex pipiens pallens Mosquitoes
Pyrethroid insecticides have been extensively used in China and worldwide for public health pest control. Accurate resistance monitoring is essential to guide the rational use of insecticides and resistance management. Here we examined the nucleotide diversity of the para-sodium channel gene, which confers knockdown resistance (kdr) in Culex pipiens pallens mosquitoes in China. The sequence analysis of the para-sodium channel gene identified L1014F and L1014S mutations. We developed and validated allele-specific PCR and the real-time TaqMan methods for resistance diagnosis. The real-time TaqMan method is more superior to the allele-specific PCR method as evidenced by higher amplification rate and better sensitivity and specificity. Significant positive correlation between kdr allele frequency and bioassay-based resistance phenotype demonstrates that the frequency of L1014F and L1014S mutations in the kdr gene can be used as a molecular marker for deltamethrin resistance monitoring in natural Cx. pipiens pallens populations in the East China region. The laboratory selection experiment found that L1014F mutation frequency, but not L1014S mutation, responded to deltamethrin selection, suggesting that the L1014F mutation is the key mutation conferring resistance to deltamethrin. High L1014F mutation frequency detected in six populations of Cx. pipens pallens suggests high prevalence of pyrethroid resistance in Eastern China, calling for further surveys to map the resistance in China and for investigating alternative mosquito control strategies
Complete plastid genome of the endangered species Paraisometrum mileense (Gesneriaceae) endemic to China
Paraisometrum mileense is a unique species of Paraisometrum endemic to south-west China, which is a â100-years-lostâ plant and was rediscovered in 2006. In this paper, complete plastid genome of P. mileense is firstly assembled and characterized. The length of total plastid genome is 153,259âbp consisting of a large single-copy region (LSC) of 84,293âbp, a small single-copy region (SSC) of 18,162âbp, and two inverted repeat regions (IRs) of 25,402âbp. In total, 113 genes are predicted, including 80 protein-coding genes (PCGs), four rRNA genes and 29 tRNA genes. Phylogenetic analysis indicated that P. mileense with the other eight Gesneriaceae species formed a clade with a 100% bootstrap support
Research on Wireless Signal Coverage in Metro Station
In this paper, Firstly, we analyzed metro platform types and the basic principle of radio frequency (RF) technology. Secondly, we proposed an application method of radio frequency technology in metro. Then, by studying the wireless signal coverage in metro station, we got results of relationships of reflection coefficient G with angle q, and with phase shift z. Finally, we studied an example of signal coverage for wireless network in metro station, three kinds of path difference DLi (i=2, 3, 4) between the reflected wave and incident wave are calculated. This work could provide certain theoretical and practical research value for studying the security transmission of wireless signal in metro station
Complete plastid genome sequence of the rare and endangered medicinal herb Psammosilene tunicoides, endemic to China
Psammosilene tunicoides W.C. Wu et C.Y. Wu, a monotypic species and endemic to Southwest China, is a rare and endangered traditional medicinal herb with satisfactory effects on multifold pathology. In order to provide crucial data for protection, we reported and analyzed the complete plastid genome of P. tunicoides as the foundation of germplasm conservation. The complete plastid genome is a typical quadripartite circular molecule of 153,957âbp in length, including a large single copy (LSC) region of 83,972âbp and a small single copy (SSC) region of 17,495âbp separated by two inverted repeat (IR) regions of 26,245âbp. In total of 111 unique genes were predicted, including 78 protein-coding genes (PCGs), 29 transfer RNA genes, and four ribosomal RNA genes. The overall GC content of P. tunicoides is 36.5%. The phylogenetic analysis revealed that P. tunicoides and Dianthus caryophyllus formed an independent clade with a 100% bootstrap support
Complete plastid genome sequence of Erigeron breviscapus (Asteraceae), an endemic traditional Chinese herbal medicine
Erigeron breviscapus is an important traditional Chinese herb endemic to China for cardiovascular and cerebral vessel diseases. Here, the complete plastid genome of E. brevisapus was sequenced using Illumina sequencing technology. The complete chloroplast genome size is 152,183âbp, including a large single-copy region of 84,705âbp, a small single-copy region of 18,112âbp and a pair of inverted repeat regions of 24,683âbp. The total GC content is 37.2%. The genome contains 113 genes, including 80 protein-coding genes, 29 tRNA genes, and four rRNA genes. Phylogenetic analysis showed that E. breviscapus, Aster altaicus, and Eschenbachia blinii formed a clade with 100% bootstrap support
Effect of functionalized kaolinite on the curing kinetics of cycloaliphatic epoxy/anhydride system
Silane grafted kaolinite (KGS) was prepared through grinding kaolinite and then grafting with 3-aminopropyltriethoxysilane. The influence of KGS on the curing kinetics of cycloaliphatic epoxy resin was studied by non-isothermal differential scanning calorimetry at different heating rates. The reaction activation energy (Ea) was determined based on the FlynnâWallâOzawa method. The results of dynamic differential scanning calorimetry (DSC) kinetic analysis show that the surface hydroxyl groups of clay decreases the Ea from 70.6 kJ molâ 1 to 62.8 kJ molâ 1 and accelerates the curing reaction of the epoxy resin. The silane grafting reactions consume the surface hydroxyl groups of kaolinite and lead to a decrease in the catalytic efficiency of KGS in the curing of epoxy resin
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