Atrial fibrillation （AF）, the most commonly encountered arrhythmia in clinical practice, is associated with a 2-fold increase in total cardiovascular mortality, as well as the potential for substantial morbidity, in...Atrial fibrillation （AF）, the most commonly encountered arrhythmia in clinical practice, is associated with a 2-fold increase in total cardiovascular mortality, as well as the potential for substantial morbidity, including stroke, congestive heart failure, and cardiomyopathy. Its incidence and prevalence are increasing, and it represents a growing clinical and economic burden. Owing to relative inefficacy and side effects of current pharmacological and non-pharmacological therapy for AF, it remains a great challenge to improve primary and secondary AF prevention strategies to reduce this potentially enormous health burden.展开更多
设l∈N,δ=k/p-k+1/2,以及<p<1.本文的主要结果是建立广义BochnerRiesz平均的核的某种分解: ((1-|ξ|~l)~σ+)^(x)=sum from f=1 to J(k,l,p) b_f((1-|ξ|~2)ь+ζ)^(x)+T(|x|),其中T满足 T^(n+1)(s)≤cmin{(1+s)_(k-n-2),(1+s)^(...设l∈N,δ=k/p-k+1/2,以及<p<1.本文的主要结果是建立广义BochnerRiesz平均的核的某种分解: ((1-|ξ|~l)~σ+)^(x)=sum from f=1 to J(k,l,p) b_f((1-|ξ|~2)ь+ζ)^(x)+T(|x|),其中T满足 T^(n+1)(s)≤cmin{(1+s)_(k-n-2),(1+s)^(-k,p)},0<s<∞以及n=[K(1/p-1)]·作为上述分解的一个直接结果,我们得到:临界阶广义Bochner-Riesz平均在H^p(R^k)上的a.e.收敛性。展开更多
Using support vector regression （SVR）, a novel non-parametric method for recovering implied risk-neutral probability density function （IRNPDF） is investigated by solving linear operator equations. First, the SVR p...Using support vector regression （SVR）, a novel non-parametric method for recovering implied risk-neutral probability density function （IRNPDF） is investigated by solving linear operator equations. First, the SVR principle for function approximation is introduced, and an SVR method for solving linear operator equations with knowing some values of the right-hand function and without knowing its form is depicted. Then, the principle for solving the IRNPDF based on SVR and the method for constructing cross-kernel functions are proposed. Finally, an empirical example is given to verify the validity of the method. The results show that the proposed method can overcome the shortcomings of the traditional parametric methods, which have strict restrictions on the option exercise price; meanwhile, it requires less data than other non-parametric methods, and it is a promising method for the recover of IRNPDF.展开更多
Announcements for this section should be submitted in the correct format at least 3 months before the required date of publication.This list is provided as a service to readers;inclusion does not imply endorsement by ...Announcements for this section should be submitted in the correct format at least 3 months before the required date of publication.This list is provided as a service to readers;inclusion does not imply endorsement by the Hepatobiliary＆Pancreatic Diseases International.展开更多
Announcements for this section should be submitted in the correct format at least 3 months before the required date of publication.This list is provided as a service to readers;inclusion does not imply endorsement by ...Announcements for this section should be submitted in the correct format at least 3 months before the required date of publication.This list is provided as a service to readers;inclusion does not imply endorsement by the Hepatobiliary＆Pancreatic Diseases International.展开更多
Strong differential subordination and superordination properties are determined for Phi-like functions in the open unit disk by investigating appropriate classes of admissible functions. New strong differential sandwi...Strong differential subordination and superordination properties are determined for Phi-like functions in the open unit disk by investigating appropriate classes of admissible functions. New strong differential sandwich-type results are also obtained.展开更多
Conversational Implicature Theory is one important theory of pragmatics. It focuses on the implied meaning of the speakers and plays an important role in speech communication.
The linear instability analysis of the present paper shows that the thermocapillary convection in a half floating zone of larger Prandtl number has a steady instability mode ωi = 0 and m = 1 for a fat liquid bridge V...The linear instability analysis of the present paper shows that the thermocapillary convection in a half floating zone of larger Prandtl number has a steady instability mode ωi = 0 and m = 1 for a fat liquid bridge V = 1.2 with small geometrical aspect ratio A = 0.6. This conclusion is different from the usual idea of hydrothermal instability, and implies that the instability of the system may excite a steady and axial asymmetric state before the onset of oscillation in the case of large Prandtl number.展开更多
It is shown in this paper that there is a difficulty in conventional black hole thermodynamics.To overcome the difficulty we introduce a“surface”near the event horizon as an additional thermodynamical object.The mas...It is shown in this paper that there is a difficulty in conventional black hole thermodynamics.To overcome the difficulty we introduce a“surface”near the event horizon as an additional thermodynamical object.The mass and entropy of the additional“surface”are the same as the correction of mass of Schwarzschild black hole obtained in the back-reaction program up to a constant factor.This implies that some effects of back reaction an automatically considered in our thermodynamic phenomenological treatment.展开更多
The objective of this research was to assess the characteristics of seismic induced damage and the deformation patterns of pre-stressed cement-grouted cables that are used for rock slope stabilization projects subject...The objective of this research was to assess the characteristics of seismic induced damage and the deformation patterns of pre-stressed cement-grouted cables that are used for rock slope stabilization projects subjected to quasi-static cyclic loading.The experimental configuration includes the installation of 15 pre-stressed cables in a slope model made of concrete blocks(theoretically rigid rock mass) on top of a pre-existing sliding surface.The study showed that:(i) The pre-stressed cables exhibited great seismic performance.Rapid displacement of the model blocks was observed after the complete loss of the initial pre-stress load under continued applied cyclic loads and exceedance of the state of equilibrium,which implies the higher the initial pre-stress load,the better the seismic performance of the rock anchor;(ii) The failure of the pre-stressed cables was due to fracture at the connection of the tendons and cable heads under cyclic loading.The sequence of failure had a distinct pattern.Failure was first observed at the upper row of cables,which experienced the most severe damage,including the ejection of cable heads.No evidence of de-bonding was observed during the cyclic loading;(iii) The stress distribution of the bond length for pre-stressed cables was highly non-uniform.High stress concentrations were observed at both the fixed end and the free end of the bond length both before and immediately after the state of equilibrium is exceeded.The results obtained can be used to evaluate the overall performance of pre-stressed rock anchors subject to seismic loading and their potential as rockfall prevention and stabilization measures.展开更多
To discover new chemotypes of nematicides with proper toxicological profiles, a series of novel 1,2,3-benzotriazin-4-one derivatives were synthesized and further bioevaluated. The bioassay results showed that most of ...To discover new chemotypes of nematicides with proper toxicological profiles, a series of novel 1,2,3-benzotriazin-4-one derivatives were synthesized and further bioevaluated. The bioassay results showed that most of the synthesized compounds were endowed with moderate to good control efficacy against Meloidogyne incognita at 10.0 mg/L in vivo. Among them, compounds 6k and 6p displayed 100%inhibitory activities at this concentration, which implied that they could be used as lead compounds for promising nematicides.展开更多
Glyphosate has been used worldwide for nearly 40 years,and 30 types of resistant weeds have been reported.Glyphosate is mass-produced and widely used in China,but few studies and reports on glyphosate-resistant weeds ...Glyphosate has been used worldwide for nearly 40 years,and 30 types of resistant weeds have been reported.Glyphosate is mass-produced and widely used in China,but few studies and reports on glyphosate-resistant weeds and resistance mechanisms exist.Previous studies found a goosegrass species with high glyphosate resistance from orchards in South China and its glyphosate resistant mechanism was described in this study.The cDNAof 5-enolpyruvylshikimate-3-phosphate synthase（EPSPS,EC 2.5.1.19）,the target enzyme of glyphosate,was cloned from the glyphosate-resistant and-susceptible goosegrass,respectively,and referred as EPSPS-R and EPSPS-S.The Pro106 residue was known to be involved in the glyphosate resistance in most goosegrass populations.However,sequence analysis did not find the mutation at the Pro106 residue in the R biotype EPSPS amino acid sequence.The residue 133 and 382 was mutated in the R biotype EPSPS amino acid sequence instead,but it did not affect the EPSPS-S and EPSPS-R genes sensitivities to glyphosate.RT-PCR and Western blot analyses suggested that EPSPS mRNA and protein are mainly present in the shoot tissues both in the R and S goosegrass biotypes.The EPSPS-R rapidly responds to the glyphosate in R-biotype goosegrass and the induced expression was detected at 12 h post glyphosate treatment.The mRNA and protein expression of EPSPS-R increased constantly as the increasing concentration of glyphosate.However,the expression of the EPSPS-S was not induced significantly by glyphosate in the S goosegrass biotype.Quantification of real-time PCR results showed that the copy number of the EPSPS in R-biotype goosegrass was 4.7 times higher than that in the S goosegrass biotype.All the results implied that EPSPS gene amplification might mainly caused the glyphosate resistance of a goosegrass population collected from orchards in South China.展开更多
We establish a global limiting case of nonlinear Calderon-Zygmund theory to quasilinear elliptic equations div A（x,Du） = div（｜F｜^（p-2）F） under the BMO smallness of the nonlinearity,that is ｜F｜^（p-2）F∈BMO ...We establish a global limiting case of nonlinear Calderon-Zygmund theory to quasilinear elliptic equations div A（x,Du） = div（｜F｜^（p-2）F） under the BMO smallness of the nonlinearity,that is ｜F｜^（p-2）F∈BMO implies that Du ∈BMO.展开更多
The effect of diffusion on thermoelastic thin plates is investigated. The governing equations for thin thermoelastic diffusion plates under three different laws of heat and diffusion transmission are derived. By the C...The effect of diffusion on thermoelastic thin plates is investigated. The governing equations for thin thermoelastic diffusion plates under three different laws of heat and diffusion transmission are derived. By the C0-semigroup theory, the well-posedness of the proposed equations is shown.展开更多
Under the assumption that the dynamic assets price follows the variance gamma process, we establish a new bilateral pricing model of interest rate swap by integrating the reduced form model for swap pricing and the st...Under the assumption that the dynamic assets price follows the variance gamma process, we establish a new bilateral pricing model of interest rate swap by integrating the reduced form model for swap pricing and the structural model for default risk measurement.Our pricing model preserves the simplicity of the reduced form model and also considers the dynamic evolution of the counterparty assets price by incorporating with the structural model for default risk measurement. We divide the swap pricing framework into two parts, simplifying the pricing model relatively. Simulation results show that, for a one year interest rate swap, a bond spread of one hundred basis points implies a swap credit spread about 0.1054 basis point.展开更多
Traditionally,Brett from Hemingway’s The Sun Also Rises is criticized for her embodiment of various decaying indications.In appearance,that is the very conclusion a plain reader can draw from the text.But taking the ...Traditionally,Brett from Hemingway’s The Sun Also Rises is criticized for her embodiment of various decaying indications.In appearance,that is the very conclusion a plain reader can draw from the text.But taking the specific historic and literal background into the inter-textual reading,a critic reader will surely discern a series of qualities in Brett to argue for her inner innocent self which was so damaged by the reality.The author implies his"iceberg"to the effect that most readers are liable to ignore or neglect.Close reading reveals the deep-rooted sympathy in the author’s inner heart.This sympathy is not only directed to Brett,but all those in tragedies in that historic era and this sympathy later functions to highlight women’s values in the author’s viewpoint.展开更多
文摘Atrial fibrillation （AF）, the most commonly encountered arrhythmia in clinical practice, is associated with a 2-fold increase in total cardiovascular mortality, as well as the potential for substantial morbidity, including stroke, congestive heart failure, and cardiomyopathy. Its incidence and prevalence are increasing, and it represents a growing clinical and economic burden. Owing to relative inefficacy and side effects of current pharmacological and non-pharmacological therapy for AF, it remains a great challenge to improve primary and secondary AF prevention strategies to reduce this potentially enormous health burden.
文摘设l∈N,δ=k/p-k+1/2,以及<p<1.本文的主要结果是建立广义BochnerRiesz平均的核的某种分解: ((1-|ξ|~l)~σ+)^(x)=sum from f=1 to J(k,l,p) b_f((1-|ξ|~2)ь+ζ)^(x)+T(|x|),其中T满足 T^(n+1)(s)≤cmin{(1+s)_(k-n-2),(1+s)^(-k,p)},0<s<∞以及n=[K(1/p-1)]·作为上述分解的一个直接结果,我们得到:临界阶广义Bochner-Riesz平均在H^p(R^k)上的a.e.收敛性。
基金The National Natural Science Foundation of China (No.70671025)
文摘Using support vector regression （SVR）, a novel non-parametric method for recovering implied risk-neutral probability density function （IRNPDF） is investigated by solving linear operator equations. First, the SVR principle for function approximation is introduced, and an SVR method for solving linear operator equations with knowing some values of the right-hand function and without knowing its form is depicted. Then, the principle for solving the IRNPDF based on SVR and the method for constructing cross-kernel functions are proposed. Finally, an empirical example is given to verify the validity of the method. The results show that the proposed method can overcome the shortcomings of the traditional parametric methods, which have strict restrictions on the option exercise price; meanwhile, it requires less data than other non-parametric methods, and it is a promising method for the recover of IRNPDF.
文摘Announcements for this section should be submitted in the correct format at least 3 months before the required date of publication.This list is provided as a service to readers;inclusion does not imply endorsement by the Hepatobiliary＆Pancreatic Diseases International.
文摘Announcements for this section should be submitted in the correct format at least 3 months before the required date of publication.This list is provided as a service to readers;inclusion does not imply endorsement by the Hepatobiliary＆Pancreatic Diseases International.
基金Supported by UGC New Delhi(Grant No.MRP-5591/15(SERO/UGC))
文摘Strong differential subordination and superordination properties are determined for Phi-like functions in the open unit disk by investigating appropriate classes of admissible functions. New strong differential sandwich-type results are also obtained.
文摘Conversational Implicature Theory is one important theory of pragmatics. It focuses on the implied meaning of the speakers and plays an important role in speech communication.
基金the National Natural Science Foundation of China under Grant No.19789201the Ministry of Science and Technology of China under project 95-Yu-34.
文摘The linear instability analysis of the present paper shows that the thermocapillary convection in a half floating zone of larger Prandtl number has a steady instability mode ωi = 0 and m = 1 for a fat liquid bridge V = 1.2 with small geometrical aspect ratio A = 0.6. This conclusion is different from the usual idea of hydrothermal instability, and implies that the instability of the system may excite a steady and axial asymmetric state before the onset of oscillation in the case of large Prandtl number.
文摘It is shown in this paper that there is a difficulty in conventional black hole thermodynamics.To overcome the difficulty we introduce a“surface”near the event horizon as an additional thermodynamical object.The mass and entropy of the additional“surface”are the same as the correction of mass of Schwarzschild black hole obtained in the back-reaction program up to a constant factor.This implies that some effects of back reaction an automatically considered in our thermodynamic phenomenological treatment.
基金financially supported by the National Basic Research Program of China (973 Program) (Grant No.2013CB733202)the National Natural Science Foundation of China (Grant No.41102191)+1 种基金the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology) (Grant No.SKLGP2011Z019)the National Natural Science Foundation of China (Grant No.11670589)
文摘The objective of this research was to assess the characteristics of seismic induced damage and the deformation patterns of pre-stressed cement-grouted cables that are used for rock slope stabilization projects subjected to quasi-static cyclic loading.The experimental configuration includes the installation of 15 pre-stressed cables in a slope model made of concrete blocks(theoretically rigid rock mass) on top of a pre-existing sliding surface.The study showed that:(i) The pre-stressed cables exhibited great seismic performance.Rapid displacement of the model blocks was observed after the complete loss of the initial pre-stress load under continued applied cyclic loads and exceedance of the state of equilibrium,which implies the higher the initial pre-stress load,the better the seismic performance of the rock anchor;(ii) The failure of the pre-stressed cables was due to fracture at the connection of the tendons and cable heads under cyclic loading.The sequence of failure had a distinct pattern.Failure was first observed at the upper row of cables,which experienced the most severe damage,including the ejection of cable heads.No evidence of de-bonding was observed during the cyclic loading;(iii) The stress distribution of the bond length for pre-stressed cables was highly non-uniform.High stress concentrations were observed at both the fixed end and the free end of the bond length both before and immediately after the state of equilibrium is exceeded.The results obtained can be used to evaluate the overall performance of pre-stressed rock anchors subject to seismic loading and their potential as rockfall prevention and stabilization measures.
基金financial supported by the National High Technology Research and Development Program of China(National 863 Program,No.2013AA065202)the National Natural Science Foundation of China(No.21272071)+1 种基金supported by the Special Fund for Agro-scientific Research in the Public Interest(No.201103007)the Fundamental Research Funds for the Central Universities
文摘To discover new chemotypes of nematicides with proper toxicological profiles, a series of novel 1,2,3-benzotriazin-4-one derivatives were synthesized and further bioevaluated. The bioassay results showed that most of the synthesized compounds were endowed with moderate to good control efficacy against Meloidogyne incognita at 10.0 mg/L in vivo. Among them, compounds 6k and 6p displayed 100%inhibitory activities at this concentration, which implied that they could be used as lead compounds for promising nematicides.
基金supported by the National Natural Science Foundation of China(31301683)the Science and Technology Planning Project of Guangdong Province,China(2012A020100009)
文摘Glyphosate has been used worldwide for nearly 40 years,and 30 types of resistant weeds have been reported.Glyphosate is mass-produced and widely used in China,but few studies and reports on glyphosate-resistant weeds and resistance mechanisms exist.Previous studies found a goosegrass species with high glyphosate resistance from orchards in South China and its glyphosate resistant mechanism was described in this study.The cDNAof 5-enolpyruvylshikimate-3-phosphate synthase（EPSPS,EC 2.5.1.19）,the target enzyme of glyphosate,was cloned from the glyphosate-resistant and-susceptible goosegrass,respectively,and referred as EPSPS-R and EPSPS-S.The Pro106 residue was known to be involved in the glyphosate resistance in most goosegrass populations.However,sequence analysis did not find the mutation at the Pro106 residue in the R biotype EPSPS amino acid sequence.The residue 133 and 382 was mutated in the R biotype EPSPS amino acid sequence instead,but it did not affect the EPSPS-S and EPSPS-R genes sensitivities to glyphosate.RT-PCR and Western blot analyses suggested that EPSPS mRNA and protein are mainly present in the shoot tissues both in the R and S goosegrass biotypes.The EPSPS-R rapidly responds to the glyphosate in R-biotype goosegrass and the induced expression was detected at 12 h post glyphosate treatment.The mRNA and protein expression of EPSPS-R increased constantly as the increasing concentration of glyphosate.However,the expression of the EPSPS-S was not induced significantly by glyphosate in the S goosegrass biotype.Quantification of real-time PCR results showed that the copy number of the EPSPS in R-biotype goosegrass was 4.7 times higher than that in the S goosegrass biotype.All the results implied that EPSPS gene amplification might mainly caused the glyphosate resistance of a goosegrass population collected from orchards in South China.
基金Supported by the National Natural Science Foundation of China(Grant No.11401473)Fundamental Research Funds for the Central Universities(Grant No.31920160059)+4 种基金the Natural Science Foundation of Gansu Province(Grant Nos.1506RJYA2721506RJZA274)Science and Humanity Foundation of the Ministry of Education(Grant No.15YJA880085)Foundation of State Nationalities Affairs Commission(Grant No.14XBZ016)Research and Innovation Teams of Northwest University for Nationalities
文摘We establish a global limiting case of nonlinear Calderon-Zygmund theory to quasilinear elliptic equations div A（x,Du） = div（｜F｜^（p-2）F） under the BMO smallness of the nonlinearity,that is ｜F｜^（p-2）F∈BMO implies that Du ∈BMO.
文摘The effect of diffusion on thermoelastic thin plates is investigated. The governing equations for thin thermoelastic diffusion plates under three different laws of heat and diffusion transmission are derived. By the C0-semigroup theory, the well-posedness of the proposed equations is shown.
文摘Under the assumption that the dynamic assets price follows the variance gamma process, we establish a new bilateral pricing model of interest rate swap by integrating the reduced form model for swap pricing and the structural model for default risk measurement.Our pricing model preserves the simplicity of the reduced form model and also considers the dynamic evolution of the counterparty assets price by incorporating with the structural model for default risk measurement. We divide the swap pricing framework into two parts, simplifying the pricing model relatively. Simulation results show that, for a one year interest rate swap, a bond spread of one hundred basis points implies a swap credit spread about 0.1054 basis point.
文摘Traditionally,Brett from Hemingway’s The Sun Also Rises is criticized for her embodiment of various decaying indications.In appearance,that is the very conclusion a plain reader can draw from the text.But taking the specific historic and literal background into the inter-textual reading,a critic reader will surely discern a series of qualities in Brett to argue for her inner innocent self which was so damaged by the reality.The author implies his"iceberg"to the effect that most readers are liable to ignore or neglect.Close reading reveals the deep-rooted sympathy in the author’s inner heart.This sympathy is not only directed to Brett,but all those in tragedies in that historic era and this sympathy later functions to highlight women’s values in the author’s viewpoint.
