PbZrxTi1-xO3(PZT)fims are fabricated on F-doped tin oxide(FTO)substrates using chemical solutions containing PVP polymer and rapid thermal annealing processing.The dependence of the layered PZT multilayer formation an...PbZrxTi1-xO3(PZT)fims are fabricated on F-doped tin oxide(FTO)substrates using chemical solutions containing PVP polymer and rapid thermal annealing processing.The dependence of the layered PZT multilayer formation and their optical properties on the Zr content x are examined.It is found that all the PZT films are crystallized and exhibit 110-preferred orientation.When x varies in the region of 0-0.8,the PZT films display lamellar structures,and a high reflection band occurs in each optical reflectance spectrum curve.Especially,those PZT fikms with Zr/Ti atomic ratio of 35/65-65/35 show clearly layered cross-sectional morphologies arranged alternatively by porous and dense PZT layers,and have a peak optical reflectivity of>70%and a band width of>45 nm.To obtain the optimal Bragg reflection performance of the PZT multilayers,the Zr content should be selected in the range of 0.35-0.65.展开更多
The concept of community is of great significance in guiding the innovation of the mechanism of industry-education integration,which can promote the integration of industry-education integration from"integration&...The concept of community is of great significance in guiding the innovation of the mechanism of industry-education integration,which can promote the integration of industry-education integration from"integration"to real"integration".We summarize the current situation of the development of industry-teaching integration mode through research,point out the"four deviations"in the development of industry-teaching integration,analyze the causes of deviations,and put forward the research strategy of"four synergistic"innovation mechanism for industry-teaching integration based on the concept of community,i.e.,synergistic development of community planning It proposes the research strategy of"four synergies"innovation mechanism based on the concept of community,namely the synergy of community planning and development,the synergy of community governance concept,the synergy of community multi-party educating mechanism,and the synergy of community fusion effect system,so as to establish collaborative ties,build a new form of cooperation concepts,safeguard the docking of talent supply and demand,and enhance the effect of integration of industry and education.展开更多
The field seismic data is disturbed by the interferential information, which has low signal to noise ratio (SNR). That is disadvantage for seismic data interpretation. So it is important to remove the noise of seismic...The field seismic data is disturbed by the interferential information, which has low signal to noise ratio (SNR). That is disadvantage for seismic data interpretation. So it is important to remove the noise of seismic data. Independent component analysis (ICA) can remove most of the noise interference. However, ICA has some defects in noise reduction, because it needs some conditions that seismic data is independent reciprocally for denoising. To solve these defects, this paper proposes an improved ICA algorithm to noise reduction. Through simulation experiments, it can be obtained that the best decomposition levels of the new algorithm is 3. At last, the proposed improved ICA is applied to deal with the actual seismic data. The results show that it can effectively eliminate most of seismic noise such as random noise, linear interference, surface waves, and so on. The improved ICA is not only easy to denoising, but also has excellent mathematical theoretical properties.展开更多
The existence of solutions for the 2n-order m-point boundary value problem at resonance is obtained by using the coincidence degree theory of Mawhin.We give an example to demonstrate our result.The interest is that th...The existence of solutions for the 2n-order m-point boundary value problem at resonance is obtained by using the coincidence degree theory of Mawhin.We give an example to demonstrate our result.The interest is that the nonlinear term may be noncontinuous.展开更多
In this paper,the ε-super effcient solution for set-valued map vector optimization in locally convex space is introduced.And under the assumption of the nearly generalized cone-subconvexlikeness for set-valued maps,u...In this paper,the ε-super effcient solution for set-valued map vector optimization in locally convex space is introduced.And under the assumption of the nearly generalized cone-subconvexlikeness for set-valued maps,used new methods,the scalarization theorem and Lagrange multiplier theorem for ε-super effcient solution are established.展开更多
When φ is an analytic map of the unit disk D into itself,and X is a Banach space of analytic functions on D,define the composition operator Cφ by Cφ(f) = f οφ,for f ∈ X.In this paper,we study the boundedness and...When φ is an analytic map of the unit disk D into itself,and X is a Banach space of analytic functions on D,define the composition operator Cφ by Cφ(f) = f οφ,for f ∈ X.In this paper,we study the boundedness and compactness of composition operators from the space B0 to QK and QK,0.展开更多
The pricing of corporate bond with the default correlation was studied when the corporate holded the share of other corporates . On the basis of stochastic interest rate, the model of firm's bond with default corr...The pricing of corporate bond with the default correlation was studied when the corporate holded the share of other corporates . On the basis of stochastic interest rate, the model of firm's bond with default correlation was established by means of reduced form and partial differential equations (PDE). Also, the close form formula for the pricing of the firm's bond was obtained. Finally, some numerical examples were given to illustrate how our models work.展开更多
It is showed that the LmSP(limit shadowing property)for flows is invariant under topological equivalence,and the suspension flow φ f of a homeomorphism f under a continuous function θ:X→ R>0 has LmSP + if and on...It is showed that the LmSP(limit shadowing property)for flows is invariant under topological equivalence,and the suspension flow φ f of a homeomorphism f under a continuous function θ:X→ R>0 has LmSP + if and only if f has LmSP +.As examples of application,the LmSP + of the ergodic flow on torus which has irrational number is discussed, and the characterization of a class of flows on torus with LmSP + is given.展开更多
A conjecture posed by Melham for Un2k+Un+12k in [2] is considered in this article.Several positive results on Vn+s2k +(-1)k(p2-4)kUn2k and V n2k+(-1)k(p2-4)kUn+s2k are achieved which generalize existed results on V n+...A conjecture posed by Melham for Un2k+Un+12k in [2] is considered in this article.Several positive results on Vn+s2k +(-1)k(p2-4)kUn2k and V n2k+(-1)k(p2-4)kUn+s2k are achieved which generalize existed results on V n+12-(p2-4)Un2 and Vn2-(p2-4)Un+12.展开更多
Phytoextraction is a promising option for purifying hexavalent chromium(Cr(Ⅵ))-laden wastewater,but the long remediation period incurred by poor growth rate of Cr hyperaccumulators remains a primary hindrance to its ...Phytoextraction is a promising option for purifying hexavalent chromium(Cr(Ⅵ))-laden wastewater,but the long remediation period incurred by poor growth rate of Cr hyperaccumulators remains a primary hindrance to its large-scale application.In this study,we performed a hydroponic experiment to evaluate the feasibility of promoting the growth and phytoextraction efficiency of Cr hyperaccumulator Leersia hexandra Swartz(L.hexandra)by inoculating plant growth-promoting rhizobacteria(PGPR)Bacillus cereus(B.cereus).In batch tests,the Cr(Ⅵ)removal rates of L.hexandra and B.cereus co-culture were greater than the sum of their respective monocultures.This was likely due to the microbial reduction of Cr(Ⅵ)to Cr(Ⅲ),which is amiable to plant uptake.Besides,the PGPR factors of B.cereus,including indoleacetic acid(IAA)production,1-aminocyclopropane-1-carboxylic acid deamination(ACCd)activity,phosphate solubilization capacity,and siderophore production,were quantified.These PGPR factors helped explain the biomass augmentation,root elongation and enhanced Cr enrichment of the inoculated L.hexandra in pot experiments.Despite the increased Cr uptake,no aggravated oxidative damage to the cell membrane was observed in the inoculated L.hexandra.This was attributed to its capacity to confront the increased intracellular Cr stress by upregulating both the activities of antioxidative enzymes and expression of metal-binding proteins/peptides.Moreover,L.hexandra could always conserve the majority of Cr in the residual and oxalic integrated forms with low mobility and phytotoxicity,irrespective of the B.cereus inoculation.These results highlight the constructed Cr hyperaccumulatorrhizobacteria consortia as an effective candidate for decontaminating Cr(Ⅵ)-laden wastewater.展开更多
This paper deals with the boundedness and compactness of the compositionintegral type operators T g, from F (p, q, s) spaces to(little) Bloch-type spaces in the unit ball of C n , where Tg,φf(z) =∫01fφ(tz)Rg(tz)(dt...This paper deals with the boundedness and compactness of the compositionintegral type operators T g, from F (p, q, s) spaces to(little) Bloch-type spaces in the unit ball of C n , where Tg,φf(z) =∫01fφ(tz)Rg(tz)(dt)/t , z ∈ B, g ∈ H(B) and φ∈H(B, B).展开更多
A type of Si-based blocked impurity band photoelectric detector with a planar architecture is designed and demonstrated by a modified silicon semiconductor processing technique.In this route,multiple ion implantation ...A type of Si-based blocked impurity band photoelectric detector with a planar architecture is designed and demonstrated by a modified silicon semiconductor processing technique.In this route,multiple ion implantation is utilized to ensure the uniform distribution of the P elements in silicon,and rapid thermal annealing treatment is used to activate the P atoms and reduce damages caused by ion-implantation.The fabricated prototype device exhibits an excellent photoelectric response performance.With a direct current(DC)bias voltage of-2.3 V,the device detectivity to blackbody irradiation is as high as 5×10^(13)cm·Hz^(1/2)/W,which corresponds to a device responsivity of nearly 4.6 A/W,showing their potential applications in infrared detection,infrared astrophysics,and extraterrestrial life science.In particular,the developed device preparation process is compatible with that for the CMOS-circuit,which greatly reduces the manufacturing cost.展开更多
In this paper, relations between vector and weak vector variational inequalities and equilibrium principles for multiclass, multicriteria traffic network equilibrium problem in the fixed demand case and elastic demand...In this paper, relations between vector and weak vector variational inequalities and equilibrium principles for multiclass, multicriteria traffic network equilibrium problem in the fixed demand case and elastic demand case are established, respectively.展开更多
In this paper,we derive a general vector Ekeland variational principle for set-valued mappings,which has a closed relation to εk^O-efficient points of set-valued optimization problems.The main result presentedin this...In this paper,we derive a general vector Ekeland variational principle for set-valued mappings,which has a closed relation to εk^O-efficient points of set-valued optimization problems.The main result presentedin this paper is a generalization of the corresponding result in[3].展开更多
In this paper,we investigate the quantum scalar fields in a massive BTZ black hole background.We study the entropy of the system by evaluating the entanglement entropy using a discretized approach.Specifically,we fit ...In this paper,we investigate the quantum scalar fields in a massive BTZ black hole background.We study the entropy of the system by evaluating the entanglement entropy using a discretized approach.Specifically,we fit the results with a log-modified formula of the black hole entropy,which is introduced by quantum correction.The coefficients of leading and sub-leading terms affected by the mass of graviton are numerically analyzed.展开更多
基金the Frontier Science Research Project of Chinese Academy of Sciences(No.QYZDJ-SSW-SLH018)the National Natural Science Foundation of China(Nos.11174307 and 11933006)the National Key Basic Research Program of China(No.2016YFB0402405).
文摘PbZrxTi1-xO3(PZT)fims are fabricated on F-doped tin oxide(FTO)substrates using chemical solutions containing PVP polymer and rapid thermal annealing processing.The dependence of the layered PZT multilayer formation and their optical properties on the Zr content x are examined.It is found that all the PZT films are crystallized and exhibit 110-preferred orientation.When x varies in the region of 0-0.8,the PZT films display lamellar structures,and a high reflection band occurs in each optical reflectance spectrum curve.Especially,those PZT fikms with Zr/Ti atomic ratio of 35/65-65/35 show clearly layered cross-sectional morphologies arranged alternatively by porous and dense PZT layers,and have a peak optical reflectivity of>70%and a band width of>45 nm.To obtain the optimal Bragg reflection performance of the PZT multilayers,the Zr content should be selected in the range of 0.35-0.65.
基金this paper is supposed by National Natural Science Foundation of China(12074289)Zhejiang Provincial Natural Science Foundation of China(Y23A040004)+2 种基金Teaching Reform Project of Zhejiang Province(jg20220509)Scientific Research Project of Zhejiang Graduate Education Association(2023-016)The 14th Five-year Teaching Reform Project of Zhejiang Province(jg20220522)。
文摘The concept of community is of great significance in guiding the innovation of the mechanism of industry-education integration,which can promote the integration of industry-education integration from"integration"to real"integration".We summarize the current situation of the development of industry-teaching integration mode through research,point out the"four deviations"in the development of industry-teaching integration,analyze the causes of deviations,and put forward the research strategy of"four synergistic"innovation mechanism for industry-teaching integration based on the concept of community,i.e.,synergistic development of community planning It proposes the research strategy of"four synergies"innovation mechanism based on the concept of community,namely the synergy of community planning and development,the synergy of community governance concept,the synergy of community multi-party educating mechanism,and the synergy of community fusion effect system,so as to establish collaborative ties,build a new form of cooperation concepts,safeguard the docking of talent supply and demand,and enhance the effect of integration of industry and education.
基金Funded by the Project of China Geological Survey (No.1212010916040)the Sichuan Science and Technology Program (No.2017JY0051)the Sichuan Science and Technology Program (No.2018GZ0200)
文摘The field seismic data is disturbed by the interferential information, which has low signal to noise ratio (SNR). That is disadvantage for seismic data interpretation. So it is important to remove the noise of seismic data. Independent component analysis (ICA) can remove most of the noise interference. However, ICA has some defects in noise reduction, because it needs some conditions that seismic data is independent reciprocally for denoising. To solve these defects, this paper proposes an improved ICA algorithm to noise reduction. Through simulation experiments, it can be obtained that the best decomposition levels of the new algorithm is 3. At last, the proposed improved ICA is applied to deal with the actual seismic data. The results show that it can effectively eliminate most of seismic noise such as random noise, linear interference, surface waves, and so on. The improved ICA is not only easy to denoising, but also has excellent mathematical theoretical properties.
基金the Natural Science Foundation of Hebei Province of China(No.A2006000298)the Doctoral Foundation of Hebei Province of China(No.B2004204)
文摘The existence of solutions for the 2n-order m-point boundary value problem at resonance is obtained by using the coincidence degree theory of Mawhin.We give an example to demonstrate our result.The interest is that the nonlinear term may be noncontinuous.
基金Supported by the Natural Science Foundation of the Education Department of Henan Province（2004110008）
文摘In this paper,the ε-super effcient solution for set-valued map vector optimization in locally convex space is introduced.And under the assumption of the nearly generalized cone-subconvexlikeness for set-valued maps,used new methods,the scalarization theorem and Lagrange multiplier theorem for ε-super effcient solution are established.
基金Foundation item： Supported by the Natural Science Foundation of China（10471039） Supported by the Natural Science Foundation of the Education Committee of Jiangsu Province of China（06KJD110175+1 种基金 07KJB110115） Supported by the Scientific Research Foundation of Xuzhou professional of Architectural Technologies（07JYA3-13） Acknowledgment The authors thank the referees and the editors for good advice on this paper. The second author also thanks professors Shaozong Yan and Xiaoman Chen for their encouragement and help while visiting in Fudan university.
文摘When φ is an analytic map of the unit disk D into itself,and X is a Banach space of analytic functions on D,define the composition operator Cφ by Cφ(f) = f οφ,for f ∈ X.In this paper,we study the boundedness and compactness of composition operators from the space B0 to QK and QK,0.
基金National Key Basic Research Program of China (973 program) (No. 2007CB814903)Shanghai Leading Academic Discipline Project,China ( No. S30405)the Research Program of Shanghai Normal University,China (No. SK201211)
文摘The pricing of corporate bond with the default correlation was studied when the corporate holded the share of other corporates . On the basis of stochastic interest rate, the model of firm's bond with default correlation was established by means of reduced form and partial differential equations (PDE). Also, the close form formula for the pricing of the firm's bond was obtained. Finally, some numerical examples were given to illustrate how our models work.
基金Supported by the National Natural Science Foundation of China ( 1 0 371 0 30 ) and the doctor'sfoundation of Hebei Normal Univ. ( L2 0 0 3B0 5 )
文摘It is showed that the LmSP(limit shadowing property)for flows is invariant under topological equivalence,and the suspension flow φ f of a homeomorphism f under a continuous function θ:X→ R>0 has LmSP + if and only if f has LmSP +.As examples of application,the LmSP + of the ergodic flow on torus which has irrational number is discussed, and the characterization of a class of flows on torus with LmSP + is given.
基金Foundation item： Supported by the National Natural Science Foundation of China（10771093）
文摘A conjecture posed by Melham for Un2k+Un+12k in [2] is considered in this article.Several positive results on Vn+s2k +(-1)k(p2-4)kUn2k and V n2k+(-1)k(p2-4)kUn+s2k are achieved which generalize existed results on V n+12-(p2-4)Un2 and Vn2-(p2-4)Un+12.
基金supported by the National Natural Science Foundation of China(Nos.52000046,52100034,52170154,and 52070051)the Special Project of Guangxi Science and Technology Base and Talent(Nos.GuiKe AD20297009 and GuiKe AD20297007)the Middle-aged and Young Teachers’Basic Ability Promotion Project of Guangxi(Nos.2020KY05039 and 2021KY0221).
文摘Phytoextraction is a promising option for purifying hexavalent chromium(Cr(Ⅵ))-laden wastewater,but the long remediation period incurred by poor growth rate of Cr hyperaccumulators remains a primary hindrance to its large-scale application.In this study,we performed a hydroponic experiment to evaluate the feasibility of promoting the growth and phytoextraction efficiency of Cr hyperaccumulator Leersia hexandra Swartz(L.hexandra)by inoculating plant growth-promoting rhizobacteria(PGPR)Bacillus cereus(B.cereus).In batch tests,the Cr(Ⅵ)removal rates of L.hexandra and B.cereus co-culture were greater than the sum of their respective monocultures.This was likely due to the microbial reduction of Cr(Ⅵ)to Cr(Ⅲ),which is amiable to plant uptake.Besides,the PGPR factors of B.cereus,including indoleacetic acid(IAA)production,1-aminocyclopropane-1-carboxylic acid deamination(ACCd)activity,phosphate solubilization capacity,and siderophore production,were quantified.These PGPR factors helped explain the biomass augmentation,root elongation and enhanced Cr enrichment of the inoculated L.hexandra in pot experiments.Despite the increased Cr uptake,no aggravated oxidative damage to the cell membrane was observed in the inoculated L.hexandra.This was attributed to its capacity to confront the increased intracellular Cr stress by upregulating both the activities of antioxidative enzymes and expression of metal-binding proteins/peptides.Moreover,L.hexandra could always conserve the majority of Cr in the residual and oxalic integrated forms with low mobility and phytotoxicity,irrespective of the B.cereus inoculation.These results highlight the constructed Cr hyperaccumulatorrhizobacteria consortia as an effective candidate for decontaminating Cr(Ⅵ)-laden wastewater.
基金Foundation item： Supported by the Natural Science Foundation of China（10871216） Supported by the Natural Science Foundation Project of CQ CSTC（2008BB0346, 2007BB0441） Supported by the Excellent Young Teachers Program of Chongqing Jiaotong University（EYT08-016） Acknowledgement The author would like to thank the anonymous referee for the valuable remarks that helped considerably to correct and to improve the presentation.
基金Supported by the NNSF of China(10771064, 11101139)Supported by the NSF of Zhejiang Province(Y7080197, Y6090036, Y6100219)Supported by the Foundation of Creative Group in Colleges and Universities of Zhejiang Province(T200924)
文摘This paper deals with the boundedness and compactness of the compositionintegral type operators T g, from F (p, q, s) spaces to(little) Bloch-type spaces in the unit ball of C n , where Tg,φf(z) =∫01fφ(tz)Rg(tz)(dt)/t , z ∈ B, g ∈ H(B) and φ∈H(B, B).
基金the National Natural Science Foundation of China(Grant Nos.11933006,61805060,and 61290304).
文摘A type of Si-based blocked impurity band photoelectric detector with a planar architecture is designed and demonstrated by a modified silicon semiconductor processing technique.In this route,multiple ion implantation is utilized to ensure the uniform distribution of the P elements in silicon,and rapid thermal annealing treatment is used to activate the P atoms and reduce damages caused by ion-implantation.The fabricated prototype device exhibits an excellent photoelectric response performance.With a direct current(DC)bias voltage of-2.3 V,the device detectivity to blackbody irradiation is as high as 5×10^(13)cm·Hz^(1/2)/W,which corresponds to a device responsivity of nearly 4.6 A/W,showing their potential applications in infrared detection,infrared astrophysics,and extraterrestrial life science.In particular,the developed device preparation process is compatible with that for the CMOS-circuit,which greatly reduces the manufacturing cost.
基金This research was partially supported by the National Natural Science Foundation of China (Grant numbers: 60574073 and 10471142)
文摘In this paper, relations between vector and weak vector variational inequalities and equilibrium principles for multiclass, multicriteria traffic network equilibrium problem in the fixed demand case and elastic demand case are established, respectively.
基金Supported by the National Natural Science Foundation of China(No.60574073,No.10471142)
文摘In this paper,we derive a general vector Ekeland variational principle for set-valued mappings,which has a closed relation to εk^O-efficient points of set-valued optimization problems.The main result presentedin this paper is a generalization of the corresponding result in[3].
基金Supported by the Natural Science Foundation of China(11705161)Natural Science Foundation of Jiangsu Province(BK20170481)
文摘In this paper,we investigate the quantum scalar fields in a massive BTZ black hole background.We study the entropy of the system by evaluating the entanglement entropy using a discretized approach.Specifically,we fit the results with a log-modified formula of the black hole entropy,which is introduced by quantum correction.The coefficients of leading and sub-leading terms affected by the mass of graviton are numerically analyzed.
