We study genuine entanglement among three qubits undergoing a noisy process that includes dissipation, squeezing,and decoherence. We obtain a general solution and analyze the asymptotic quantum states. We find that mo...We study genuine entanglement among three qubits undergoing a noisy process that includes dissipation, squeezing,and decoherence. We obtain a general solution and analyze the asymptotic quantum states. We find that most of these asymptotic states can be genuinely entangled depending upon the parameters of the channel, memory parameter, and the parameters of the initial states. We study Greenberger–Horne–Zeilinger(GHZ) states and W states, mixed with white noise,and determine the conditions for them to be genuinely entangled at infinity. We find that for these mixtures, it is possible to start with a bi-separable state(with a specific mixture of white noise) and end with genuine entangled states. However, the memory parameter μ must be very high. We find that in contrast to the two-qubit case, none of the three-qubit asymptotic states for n → ∞ are genuinely entangled.展开更多
A set of orthogonal product states is deemed genuinely nonlocal if they remain locally indistinguishable under any bipartition.In this paper,we first construct a genuinely nonlocal product basis BⅠ(5,3)in C^(5)×...A set of orthogonal product states is deemed genuinely nonlocal if they remain locally indistinguishable under any bipartition.In this paper,we first construct a genuinely nonlocal product basis BⅠ(5,3)in C^(5)×C^(5)×C^(5)using a set of nonlocal product states in C^(3)×C^(4).Then,we obtain a genuinely nonlocal product basis BⅡ(5,3)by replacing certain states in BⅠ(5,3)with some superposition states.We achieve perfect discrimination of the constructed genuinely nonlocal product basis,separately employing two EPR states and one GHZ state.Our protocol is more efficient than quantum teleportation.展开更多
In the criminological system, passive euthanasia is an act that meets the constitutive elements. We should discard the traditional view of distinguishing between acts and omissions, but use genuine consent or presumpt...In the criminological system, passive euthanasia is an act that meets the constitutive elements. We should discard the traditional view of distinguishing between acts and omissions, but use genuine consent or presumptive consent under the patient’s right to self-determination as the basis for its justification. In general, the patient’s genuine consent takes precedence, but in case of the unavail-ability of the patient’s genuine consent, his or her presumptive consent should be applied as a substitute. The judgment of presumptive con-sent should follow the subsequence, with the living will of the patient applied first and then the substitute decision-making. If the patient’s personal will cannot be inferred after exhausting all available possi-bilities, the principle of prioritizing the interests of life should prevail, and the ongoing life-sustaining medical care should not be interrupted or terminated.展开更多
Abstract： In the present study, we established an ultra performance liquid chromatography coupled with time-of-flight mass spectrometry （UPLC-QTOF-MSE） method to simultaneously quantify 33 components in Ginkgo bilo...Abstract： In the present study, we established an ultra performance liquid chromatography coupled with time-of-flight mass spectrometry （UPLC-QTOF-MSE） method to simultaneously quantify 33 components in Ginkgo biloba leaf extracts （GBEs）, including 17 flavonol glycosides, five terpene trilactones （TTLs）, four polyphenols and seven carboxylic acids. This optimized method was successfully applied to analyze the explicit compositions of GBE samples collected from different places. Furthermore, the data were processed through unsupervised principal component analysis （PCA） and supervised orthogonal partial least squared discrimination analysis （OPLS-DA） to evaluate the quality and compare the differences between the samples according to the contents of the 33 chemical constituents. Bilobalide, protocatechuic acid, shikimic acid, quinic acid, ginkgolide B, ginkgolide J, kaempferol-3-O-rutinoside, isorhamnetin-3-O-rutinoside, quercetin-3-O-ct-L-rhamnopyranocyl-2＂-（6＇＂-p-coumaroyl）-β-D-glucoside and rutin were recognized as characteristic chemical markers that contributed most to control the quality of GBEs. Based on the fact that GBEs should be standardized with the characteristic components as quality control chemical markers, it is most important to maintain the quality of GBEs stable and reliable, and this method also provided a good strategy to further rectify and standardize the GBEs market.展开更多
In the English language classroom, authenticity is a basic discoursal feature of teachers＇ instructional discourse. Without authenticity, there will be a mismatch between what students learn in the classroom and what...In the English language classroom, authenticity is a basic discoursal feature of teachers＇ instructional discourse. Without authenticity, there will be a mismatch between what students learn in the classroom and what they use in real life. However, the notion of authenticity varies with the change between the natural mode and pedagogic mode in the classroom. Therefore, based on this assumption, retrieving and analyzing data from the corpus and classroom videos, the present paper identifies two categories of problems in Chinese teachers＇ instructional discourse. Sample extracts are discussed and predictions are made on how teachers＇ failure to produce authentic discourse may result in ineffective teaching and learning.展开更多
Condemned by Mencius （ca.372-289 BCE） as selfishness （weiwo, 为我）, Yang Zhu＇s yangsheng philosophy in China is traditionally depicted as a philosophy of egoism and hedonism. In contrast, Yang Zhu （fl.ca.370-350...Condemned by Mencius （ca.372-289 BCE） as selfishness （weiwo, 为我）, Yang Zhu＇s yangsheng philosophy in China is traditionally depicted as a philosophy of egoism and hedonism. In contrast, Yang Zhu （fl.ca.370-350 BCE） is described as an ＂early liberal or individualist＂ hero in the Western Discussion of Chinese Philosophy. Yang Zhu may not be a liberal or individualist hero as portrayed by the West, but surely he should not be depicted as a promoter of egoism as Mencius did. Both John Emerson and A.C. Graham are probably right when they claimed that Yang Zhu was a revolutionary thinker of his own time; and ＂Yang Zhu＇s intervention for the Chinese thinking world had provoked a metaphysical crisis which had threatened the basic assumptions of Confucianism and Mohism and set them into a new course＂ （A.C. Graham 1978）. From my reading, Yang Zhu＇s influence on Chinese philosophy had been and will be even greater, although his philosophy as a whole was not practiced by Chinese society in the past due to the dominance of Confucianism. Yet as the first person who clearly emphasized nourishing of life for individuals and the first theory that rooted morality into xing （性, human nature）, Yang Zhu＇s yangsheng philosophy had indeed through history made a huge contribution to Chinese nurturing life tradition, and had great potential in providing inspiration to modern moral thinking. Many discussions initiated or developed by Yang Zhu and his followers have influenced both Confucianism and Daoism profoundly. His idea of nourishing life was not only inherited and developed by Zhuangzi and later Daoist religion from life preservation perspective, but also by Mencius and Xunzi from moral cultivation perspective. As a doctrine that has shown more and more relevance to modern society, people can find many inspirations from Yang Zhu＇s answer to the following questions： What is the aim of human life？ What is the right attitude toward life and death？ What is human nature？ What is the relationship between life nourishment and individual freedom？ Why nourishing one＇s own life should be as important as nourishing that of others？ What is the difference between humans and animals？ Why living a natural life is so important for human beings？ Based on materials collected from various Chinese sources directly related to Yang Zhu＇s school, especially the chapter entitled as ＂Yang Zhu＂ from the book of Liezi, this paper will explore essential features of Yang Zhu＇s yangsheng philosophy and its relevance to modern society. As ＂guiji＂ （贵已, cherishing oneself） is the core of Yang Zhu＇s yangsheng philosophy, discussion of this paper will focus on what Yang Zhu＇s ＂guiji＂ means, why Yang Zhu＇s ＂guiji＂ is not ＂weiwo＂ （为我, for oneself）, and how Yang Zhu＇s ＂guiji＂ yangsheng is relevant to modern society.展开更多
We propose two schemes for splitting single- and two-qubit states by using four-particle genuine entangled state as the quantum channel. After the sender performs Bell-basis （or three-partite GHZ- basis） measurement...We propose two schemes for splitting single- and two-qubit states by using four-particle genuine entangled state as the quantum channel. After the sender performs Bell-basis （or three-partite GHZ- basis） measurements on her particles, and the cooperators operate single-particle measurements on their particles, the state receiver can reconstruct the original state of the sender by applying the appropriate unitary operation. In particular, in the scheme for splitting two-qubit state, the receiver needs to introduce an auxiliary particle and carries out a C-NOT operation.展开更多
Zherong County of Fujian Province is a genuine producing area of Pseudostellaria heterophylla,and disease has become a main factor restricting the healthy development of P.heterophylla industry in the county.In order ...Zherong County of Fujian Province is a genuine producing area of Pseudostellaria heterophylla,and disease has become a main factor restricting the healthy development of P.heterophylla industry in the county.In order to scientifically understand the occurrence status of agricultural diseases and serve the GAP of P.heterophylla,P.heterophylla diseases in Zherong County were investigated,and the information and regularity of diseases were summarized.P.heterophylla diseases in Zherong County were infectious,and caused by fungi and viruses.The diseases occurred frequently in spring and summer,and symptoms were manifested in pathological changes of leaf and tuber.Eventually,green prevention and control strategies of diseases were put forward:cultivating new disease-resistant varieties,scientifically administrating drugs according to symptoms,administrating drugs in optimum period,strengthening biological control,strictly requiring drug safety period and paying attention to green prevention and control during the planting process.The occurrence of P.heterophylla diseases in Zherong County was investigated and summarized,and the corresponding strategies were put forward,so as to scientifically serve the agricultural industry in P.heterophylla genuine producing area,and to provide a basis for the sustainable development of modern pollution-free planting industry of P.heterophylla.展开更多
Using the highly entangled six-qubit genuine state we present a quantum private comparison(QPC)protocol, which enables two users to compare the equality of two bits of their secrets in every round comparison with the ...Using the highly entangled six-qubit genuine state we present a quantum private comparison(QPC)protocol, which enables two users to compare the equality of two bits of their secrets in every round comparison with the assistance of a semi-honest third party(TP). The proposed protocol needs neither unitary operations nor quantum entanglement swapping technology, both of which may consume expensive quantum devices. Single particle measurements and Bell-basis measurements, which are easy to implement with current technologies, are employed by two users and TP in the proposed protocol, respectively. The proposed protocol can withstand all kinds of outside attacks and participant attacks. Moreover, none of information about the two users' private secrets and the comparison result is leaked out to TP.展开更多
In this paper,we study on the genuine modified Bernstein-Durrmeyer-Stancu operators Gn(f,x)and investigate some approximation properties of them.Furthermore,we present a Voronovskaja type theorem for these operators.W...In this paper,we study on the genuine modified Bernstein-Durrmeyer-Stancu operators Gn(f,x)and investigate some approximation properties of them.Furthermore,we present a Voronovskaja type theorem for these operators.We also give some graphs and numerical examples to illustrate the convergence properties of these operators for certain functions.展开更多
In this paper we investigate the effectiveness of ensemble-based learners for web robot session identification from web server logs. We also perform multi fold robot session labeling to improve the performance of lear...In this paper we investigate the effectiveness of ensemble-based learners for web robot session identification from web server logs. We also perform multi fold robot session labeling to improve the performance of learner. We conduct a comparative study for various ensemble methods (Bagging, Boosting, and Voting) with simple classifiers in perspective of classification. We also evaluate the effectiveness of these classifiers (both ensemble and simple) on five different data sets of varying session length. Presently the results of web server log analyzers are not very much reliable because the input log files are highly inflated by sessions of automated web traverse software’s, known as web robots. Presence of web robots access traffic entries in web server log repositories imposes a great challenge to extract any actionable and usable knowledge about browsing behavior of actual visitors. So web robots sessions need accurate and fast detection from web server log repositories to extract knowledge about genuine visitors and to produce correct results of log analyzers.展开更多
We study the robustness of genuine multipartite entanglement for a system of three qubits under collective dephasing. Using a computable entanglement monotone for multipartite systems, we find that almost every state ...We study the robustness of genuine multipartite entanglement for a system of three qubits under collective dephasing. Using a computable entanglement monotone for multipartite systems, we find that almost every state is quite robust under this type of decoherence. We analyze random states and weighted graph states at infinity and find all of them to be genuinely entangled.展开更多
The methods of spectral, x-ray phase and microprobe analysis show that genuine Damascus steel is a high-purity unalloyed high-carbon steel with a high phosphorus content. It is shown that phosphorus in an amount of fr...The methods of spectral, x-ray phase and microprobe analysis show that genuine Damascus steel is a high-purity unalloyed high-carbon steel with a high phosphorus content. It is shown that phosphorus in an amount of from 0.1% to 0.2%, having a high liquation coefficient, contributes to the process of segregation of carbon in interdendritic zone in the process of crystallization. Interdendritic zone formed carbon clusters, in the process of forging transform into oblong carbides cementite. The main physical and chemical factors affecting the formation of oblong carbides are revealed. The hardness of carbide layers was determined, which was about 920 HV. The hardness of the troostite matrix was amounted about 475 HV. It is established that the cutting edge of the blade knife of Damascus steel is nothing more than a “micro-saw” consisting of parallel carbide and troostite layers. Tests are conducted on the preservation of the cutting edge sharpness of the blades knife of homogeneous structure of steel У15А (Russian) and the layered structure of genuine Damascus steel Ds15P (Indo-Persian). Found that with little effort cut (to 4 kg) ancient Damascus steel (Ds15P) shows a greater number of cuts than the modern instrument steel У15А. With an increase, force on the cutting edge from 6 kg to 12 kg carbon Tool steel is showed a more number of cutting on the 25% than in genuine Damascus steel. The fatigue crack propagation in the true Layered structure of Damascus steel Ds15P occurs for a greater number of cycles than in a homogeneous structure of the steel У15А. The blade knife of genuine Damascus steel, in terms of fatigue reliability (survivability), has almost 2 times longer service life than the blade knife of the modern carbon tool steel type У15А. It is proved that loss in cutting ability of a genuine Damascus steel compensates increased the reliability (“survivability”) of the blade knife with fatigue loads.展开更多
The Clauser Horne--Shimony-Holt-type noncontextuality inequality and the Svetliehny inequality are derived from the Alicki-van Ryn quantumness witness. Thus connections between quantumness and quantum contextuality, a...The Clauser Horne--Shimony-Holt-type noncontextuality inequality and the Svetliehny inequality are derived from the Alicki-van Ryn quantumness witness. Thus connections between quantumness and quantum contextuality, and between quantumness and genuine multipartite nonlocality are established.展开更多
With the development of quantum information processing, multipartite entanglement measures are needed in many cases. However, there are still no complete orthogonal genuine multipartite entanglement(GME) bases availab...With the development of quantum information processing, multipartite entanglement measures are needed in many cases. However, there are still no complete orthogonal genuine multipartite entanglement(GME) bases available as Bell states to bipartite systems. To achieve this goal, we find a method to construct complete orthogonal GME states, and we exclude many equivalent states by leveraging the group theory. We also provide the case of a 3-order 3-dimensional Hilbert space as an example and study the application of general results in the dense coding scheme as an application. Moreover, we discuss some open questions and believe that this work will enlighten extensive studies in this field.展开更多
We propose a potential scheme to generate a genuine six-atom entangled state [J. Phys. A 42 (2009) 415301] by using atoms in cavity QED system, where the atoms interact simultaneously with the highly detuned single-mo...We propose a potential scheme to generate a genuine six-atom entangled state [J. Phys. A 42 (2009) 415301] by using atoms in cavity QED system, where the atoms interact simultaneously with the highly detuned single-mode cavity and the strong classical driving field. Thus our approach is insensitive to both the cavity decay and thermal field.展开更多
We study decoherence effects on genuine multipartite entanglement for three and four qubits, spatially separated and subjected to local Lorentzian reservoirs. Employing recent techniques to compute genuine negativity ...We study decoherence effects on genuine multipartite entanglement for three and four qubits, spatially separated and subjected to local Lorentzian reservoirs. Employing recent techniques to compute genuine negativity for multipartite systems and an exact solvable model, we analyze the dynamics of genuine entanglement for different coupling bandwidths and detunings. We find that collapses and revivals can occur by varying these parameters for various multipartite quantum states.展开更多
Historically, decay rates have been used to provide quantitative and quali- tative information on the solutions to hyperbolic conservation laws. Quantitative results include the establishment of convergence rates for ...Historically, decay rates have been used to provide quantitative and quali- tative information on the solutions to hyperbolic conservation laws. Quantitative results include the establishment of convergence rates for approximating procedures and numer- ical schemes. Qualitative results include the establishment of results on uniqueness and regularity as well as the ability to visualize the waves and their evolution in time. This work presents two decay estimates on the positive waves for systems of hyperbolic and gen- uinely nonlinear balance laws satisfying a dissipative mechanism. The result is obtained by employing the continuity of Glimm-type functionals and the method of generalized characteristics [7, 17, 241.展开更多
We first present, by using exclusivity principle, a brief proof of the complementarity principle： the sum of squared expectation values of dichotomic （5：1） mutually complementary observables can not be greater tha...We first present, by using exclusivity principle, a brief proof of the complementarity principle： the sum of squared expectation values of dichotomic （5：1） mutually complementary observables can not be greater than 1. Then we prove that the complementarity principle yields tight quantum bounds of violations of N-qubit Svetlichny＇s inequalities. This result not only demonstrates that exclusivity principle can give tight quantum bound for certain type of genuine multipartite correlations, but also illustrates the subtle relationship between quantum complementarity and quantum genuine multipartite correlations.展开更多
Graph states are special multipartite entangled states that have been proven useful in a variety of quantum information tasks. We address the issue of characterizing and quantifying the genuine multipartite entangleme...Graph states are special multipartite entangled states that have been proven useful in a variety of quantum information tasks. We address the issue of characterizing and quantifying the genuine multipartite entanglement of graph states up to eight qubits. The entanglement measures used are the geometric measure, the relative entropy of entanglement, and the logarithmic robustness, have been proved to be equal for the genuine entanglement of a graph state. We provide upper and lower bounds as well as an iterative algorithm to determine the genuine multipartite entanglement.展开更多
文摘We study genuine entanglement among three qubits undergoing a noisy process that includes dissipation, squeezing,and decoherence. We obtain a general solution and analyze the asymptotic quantum states. We find that most of these asymptotic states can be genuinely entangled depending upon the parameters of the channel, memory parameter, and the parameters of the initial states. We study Greenberger–Horne–Zeilinger(GHZ) states and W states, mixed with white noise,and determine the conditions for them to be genuinely entangled at infinity. We find that for these mixtures, it is possible to start with a bi-separable state(with a specific mixture of white noise) and end with genuine entangled states. However, the memory parameter μ must be very high. We find that in contrast to the two-qubit case, none of the three-qubit asymptotic states for n → ∞ are genuinely entangled.
基金supported by the National Natural Science Foundation of China under grant 12301590the Natural Science Foundation of Hebei Province under grant A2022210002。
文摘A set of orthogonal product states is deemed genuinely nonlocal if they remain locally indistinguishable under any bipartition.In this paper,we first construct a genuinely nonlocal product basis BⅠ(5,3)in C^(5)×C^(5)×C^(5)using a set of nonlocal product states in C^(3)×C^(4).Then,we obtain a genuinely nonlocal product basis BⅡ(5,3)by replacing certain states in BⅠ(5,3)with some superposition states.We achieve perfect discrimination of the constructed genuinely nonlocal product basis,separately employing two EPR states and one GHZ state.Our protocol is more efficient than quantum teleportation.
基金the Beijing Social Science Foundation Project (Project Number 20221BS0009).
文摘In the criminological system, passive euthanasia is an act that meets the constitutive elements. We should discard the traditional view of distinguishing between acts and omissions, but use genuine consent or presumptive consent under the patient’s right to self-determination as the basis for its justification. In general, the patient’s genuine consent takes precedence, but in case of the unavail-ability of the patient’s genuine consent, his or her presumptive consent should be applied as a substitute. The judgment of presumptive con-sent should follow the subsequence, with the living will of the patient applied first and then the substitute decision-making. If the patient’s personal will cannot be inferred after exhausting all available possi-bilities, the principle of prioritizing the interests of life should prevail, and the ongoing life-sustaining medical care should not be interrupted or terminated.
文摘Abstract： In the present study, we established an ultra performance liquid chromatography coupled with time-of-flight mass spectrometry （UPLC-QTOF-MSE） method to simultaneously quantify 33 components in Ginkgo biloba leaf extracts （GBEs）, including 17 flavonol glycosides, five terpene trilactones （TTLs）, four polyphenols and seven carboxylic acids. This optimized method was successfully applied to analyze the explicit compositions of GBE samples collected from different places. Furthermore, the data were processed through unsupervised principal component analysis （PCA） and supervised orthogonal partial least squared discrimination analysis （OPLS-DA） to evaluate the quality and compare the differences between the samples according to the contents of the 33 chemical constituents. Bilobalide, protocatechuic acid, shikimic acid, quinic acid, ginkgolide B, ginkgolide J, kaempferol-3-O-rutinoside, isorhamnetin-3-O-rutinoside, quercetin-3-O-ct-L-rhamnopyranocyl-2＂-（6＇＂-p-coumaroyl）-β-D-glucoside and rutin were recognized as characteristic chemical markers that contributed most to control the quality of GBEs. Based on the fact that GBEs should be standardized with the characteristic components as quality control chemical markers, it is most important to maintain the quality of GBEs stable and reliable, and this method also provided a good strategy to further rectify and standardize the GBEs market.
文摘In the English language classroom, authenticity is a basic discoursal feature of teachers＇ instructional discourse. Without authenticity, there will be a mismatch between what students learn in the classroom and what they use in real life. However, the notion of authenticity varies with the change between the natural mode and pedagogic mode in the classroom. Therefore, based on this assumption, retrieving and analyzing data from the corpus and classroom videos, the present paper identifies two categories of problems in Chinese teachers＇ instructional discourse. Sample extracts are discussed and predictions are made on how teachers＇ failure to produce authentic discourse may result in ineffective teaching and learning.
文摘Condemned by Mencius （ca.372-289 BCE） as selfishness （weiwo, 为我）, Yang Zhu＇s yangsheng philosophy in China is traditionally depicted as a philosophy of egoism and hedonism. In contrast, Yang Zhu （fl.ca.370-350 BCE） is described as an ＂early liberal or individualist＂ hero in the Western Discussion of Chinese Philosophy. Yang Zhu may not be a liberal or individualist hero as portrayed by the West, but surely he should not be depicted as a promoter of egoism as Mencius did. Both John Emerson and A.C. Graham are probably right when they claimed that Yang Zhu was a revolutionary thinker of his own time; and ＂Yang Zhu＇s intervention for the Chinese thinking world had provoked a metaphysical crisis which had threatened the basic assumptions of Confucianism and Mohism and set them into a new course＂ （A.C. Graham 1978）. From my reading, Yang Zhu＇s influence on Chinese philosophy had been and will be even greater, although his philosophy as a whole was not practiced by Chinese society in the past due to the dominance of Confucianism. Yet as the first person who clearly emphasized nourishing of life for individuals and the first theory that rooted morality into xing （性, human nature）, Yang Zhu＇s yangsheng philosophy had indeed through history made a huge contribution to Chinese nurturing life tradition, and had great potential in providing inspiration to modern moral thinking. Many discussions initiated or developed by Yang Zhu and his followers have influenced both Confucianism and Daoism profoundly. His idea of nourishing life was not only inherited and developed by Zhuangzi and later Daoist religion from life preservation perspective, but also by Mencius and Xunzi from moral cultivation perspective. As a doctrine that has shown more and more relevance to modern society, people can find many inspirations from Yang Zhu＇s answer to the following questions： What is the aim of human life？ What is the right attitude toward life and death？ What is human nature？ What is the relationship between life nourishment and individual freedom？ Why nourishing one＇s own life should be as important as nourishing that of others？ What is the difference between humans and animals？ Why living a natural life is so important for human beings？ Based on materials collected from various Chinese sources directly related to Yang Zhu＇s school, especially the chapter entitled as ＂Yang Zhu＂ from the book of Liezi, this paper will explore essential features of Yang Zhu＇s yangsheng philosophy and its relevance to modern society. As ＂guiji＂ （贵已, cherishing oneself） is the core of Yang Zhu＇s yangsheng philosophy, discussion of this paper will focus on what Yang Zhu＇s ＂guiji＂ means, why Yang Zhu＇s ＂guiji＂ is not ＂weiwo＂ （为我, for oneself）, and how Yang Zhu＇s ＂guiji＂ yangsheng is relevant to modern society.
文摘We propose two schemes for splitting single- and two-qubit states by using four-particle genuine entangled state as the quantum channel. After the sender performs Bell-basis （or three-partite GHZ- basis） measurements on her particles, and the cooperators operate single-particle measurements on their particles, the state receiver can reconstruct the original state of the sender by applying the appropriate unitary operation. In particular, in the scheme for splitting two-qubit state, the receiver needs to introduce an auxiliary particle and carries out a C-NOT operation.
基金Special Fund for Demonstration and Construction of Agricultural Industry Strong Town in 2019(CJXCYQZ20190101).
文摘Zherong County of Fujian Province is a genuine producing area of Pseudostellaria heterophylla,and disease has become a main factor restricting the healthy development of P.heterophylla industry in the county.In order to scientifically understand the occurrence status of agricultural diseases and serve the GAP of P.heterophylla,P.heterophylla diseases in Zherong County were investigated,and the information and regularity of diseases were summarized.P.heterophylla diseases in Zherong County were infectious,and caused by fungi and viruses.The diseases occurred frequently in spring and summer,and symptoms were manifested in pathological changes of leaf and tuber.Eventually,green prevention and control strategies of diseases were put forward:cultivating new disease-resistant varieties,scientifically administrating drugs according to symptoms,administrating drugs in optimum period,strengthening biological control,strictly requiring drug safety period and paying attention to green prevention and control during the planting process.The occurrence of P.heterophylla diseases in Zherong County was investigated and summarized,and the corresponding strategies were put forward,so as to scientifically serve the agricultural industry in P.heterophylla genuine producing area,and to provide a basis for the sustainable development of modern pollution-free planting industry of P.heterophylla.
基金Supported by National Natural Science Foundation of China under Grant No.61402407
文摘Using the highly entangled six-qubit genuine state we present a quantum private comparison(QPC)protocol, which enables two users to compare the equality of two bits of their secrets in every round comparison with the assistance of a semi-honest third party(TP). The proposed protocol needs neither unitary operations nor quantum entanglement swapping technology, both of which may consume expensive quantum devices. Single particle measurements and Bell-basis measurements, which are easy to implement with current technologies, are employed by two users and TP in the proposed protocol, respectively. The proposed protocol can withstand all kinds of outside attacks and participant attacks. Moreover, none of information about the two users' private secrets and the comparison result is leaked out to TP.
基金Supported by the National Natural Science Foundation of China(11601266)the Natural Science Foundation of Fujian Province of China(2020J01783)+1 种基金the Project for High-level Talent Innovation and Entrepreneurship of Quanzhou(2018C087R)the Program for New Century Excellent Talents in Fujian Province University and Fujian Provincial Scholarship for Overseas Study。
文摘In this paper,we study on the genuine modified Bernstein-Durrmeyer-Stancu operators Gn(f,x)and investigate some approximation properties of them.Furthermore,we present a Voronovskaja type theorem for these operators.We also give some graphs and numerical examples to illustrate the convergence properties of these operators for certain functions.
文摘In this paper we investigate the effectiveness of ensemble-based learners for web robot session identification from web server logs. We also perform multi fold robot session labeling to improve the performance of learner. We conduct a comparative study for various ensemble methods (Bagging, Boosting, and Voting) with simple classifiers in perspective of classification. We also evaluate the effectiveness of these classifiers (both ensemble and simple) on five different data sets of varying session length. Presently the results of web server log analyzers are not very much reliable because the input log files are highly inflated by sessions of automated web traverse software’s, known as web robots. Presence of web robots access traffic entries in web server log repositories imposes a great challenge to extract any actionable and usable knowledge about browsing behavior of actual visitors. So web robots sessions need accurate and fast detection from web server log repositories to extract knowledge about genuine visitors and to produce correct results of log analyzers.
文摘We study the robustness of genuine multipartite entanglement for a system of three qubits under collective dephasing. Using a computable entanglement monotone for multipartite systems, we find that almost every state is quite robust under this type of decoherence. We analyze random states and weighted graph states at infinity and find all of them to be genuinely entangled.
文摘The methods of spectral, x-ray phase and microprobe analysis show that genuine Damascus steel is a high-purity unalloyed high-carbon steel with a high phosphorus content. It is shown that phosphorus in an amount of from 0.1% to 0.2%, having a high liquation coefficient, contributes to the process of segregation of carbon in interdendritic zone in the process of crystallization. Interdendritic zone formed carbon clusters, in the process of forging transform into oblong carbides cementite. The main physical and chemical factors affecting the formation of oblong carbides are revealed. The hardness of carbide layers was determined, which was about 920 HV. The hardness of the troostite matrix was amounted about 475 HV. It is established that the cutting edge of the blade knife of Damascus steel is nothing more than a “micro-saw” consisting of parallel carbide and troostite layers. Tests are conducted on the preservation of the cutting edge sharpness of the blades knife of homogeneous structure of steel У15А (Russian) and the layered structure of genuine Damascus steel Ds15P (Indo-Persian). Found that with little effort cut (to 4 kg) ancient Damascus steel (Ds15P) shows a greater number of cuts than the modern instrument steel У15А. With an increase, force on the cutting edge from 6 kg to 12 kg carbon Tool steel is showed a more number of cutting on the 25% than in genuine Damascus steel. The fatigue crack propagation in the true Layered structure of Damascus steel Ds15P occurs for a greater number of cycles than in a homogeneous structure of the steel У15А. The blade knife of genuine Damascus steel, in terms of fatigue reliability (survivability), has almost 2 times longer service life than the blade knife of the modern carbon tool steel type У15А. It is proved that loss in cutting ability of a genuine Damascus steel compensates increased the reliability (“survivability”) of the blade knife with fatigue loads.
基金Supported by the National Basic Research Program of China under Grant No 2012CB921900the National Natural Science Foundation of China under Grant Nos 11175089 and 11475089
文摘The Clauser Horne--Shimony-Holt-type noncontextuality inequality and the Svetliehny inequality are derived from the Alicki-van Ryn quantumness witness. Thus connections between quantumness and quantum contextuality, and between quantumness and genuine multipartite nonlocality are established.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11775177,11775178,11647057 and 11705146the Special Research Funds of the Department of Education of Shaanxi Province under Grant No 16JK1759+4 种基金the Basic Research Plan of Natural Science in Shaanxi Province under Grant No 2018JQ1014the Major Basic Research Program of Natural Science of Shaanxi Province under Grant No 2017ZDJC-32the Key Innovative Research Team of Quantum Many-Body Theory and Quantum Control in Shaanxi Province under Grant No 2017KCT-12the Northwest University Scientific Research Funds under Grant No15NW26the Double First-Class University Construction Project of Northwest University
文摘With the development of quantum information processing, multipartite entanglement measures are needed in many cases. However, there are still no complete orthogonal genuine multipartite entanglement(GME) bases available as Bell states to bipartite systems. To achieve this goal, we find a method to construct complete orthogonal GME states, and we exclude many equivalent states by leveraging the group theory. We also provide the case of a 3-order 3-dimensional Hilbert space as an example and study the application of general results in the dense coding scheme as an application. Moreover, we discuss some open questions and believe that this work will enlighten extensive studies in this field.
基金Supported by the National Natural Science Foundation of China under Grant No. 61265001the Natural Science Foundation of Jiangxi Province under Grant No. 20122BAB202005+1 种基金the Research Foundation of State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University under Grant No. 2011GZK031104the Research Foundation of the Education Department of Jiangxi Province
文摘We propose a potential scheme to generate a genuine six-atom entangled state [J. Phys. A 42 (2009) 415301] by using atoms in cavity QED system, where the atoms interact simultaneously with the highly detuned single-mode cavity and the strong classical driving field. Thus our approach is insensitive to both the cavity decay and thermal field.
文摘We study decoherence effects on genuine multipartite entanglement for three and four qubits, spatially separated and subjected to local Lorentzian reservoirs. Employing recent techniques to compute genuine negativity for multipartite systems and an exact solvable model, we analyze the dynamics of genuine entanglement for different coupling bandwidths and detunings. We find that collapses and revivals can occur by varying these parameters for various multipartite quantum states.
基金supported by the Start-Up fund from University of Cyprussupported by the National Science Foundation under the grant DMS 1109397
文摘Historically, decay rates have been used to provide quantitative and quali- tative information on the solutions to hyperbolic conservation laws. Quantitative results include the establishment of convergence rates for approximating procedures and numer- ical schemes. Qualitative results include the establishment of results on uniqueness and regularity as well as the ability to visualize the waves and their evolution in time. This work presents two decay estimates on the positive waves for systems of hyperbolic and gen- uinely nonlinear balance laws satisfying a dissipative mechanism. The result is obtained by employing the continuity of Glimm-type functionals and the method of generalized characteristics [7, 17, 241.
文摘We first present, by using exclusivity principle, a brief proof of the complementarity principle： the sum of squared expectation values of dichotomic （5：1） mutually complementary observables can not be greater than 1. Then we prove that the complementarity principle yields tight quantum bounds of violations of N-qubit Svetlichny＇s inequalities. This result not only demonstrates that exclusivity principle can give tight quantum bound for certain type of genuine multipartite correlations, but also illustrates the subtle relationship between quantum complementarity and quantum genuine multipartite correlations.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.60972071 and 11375152)
文摘Graph states are special multipartite entangled states that have been proven useful in a variety of quantum information tasks. We address the issue of characterizing and quantifying the genuine multipartite entanglement of graph states up to eight qubits. The entanglement measures used are the geometric measure, the relative entropy of entanglement, and the logarithmic robustness, have been proved to be equal for the genuine entanglement of a graph state. We provide upper and lower bounds as well as an iterative algorithm to determine the genuine multipartite entanglement.
