Given the significant uncertainty in the equation of state (EOS) of high-density nuclear matter, establishing EOS-independent universal relations between global properties of neutron stars provides a practical method ...Given the significant uncertainty in the equation of state (EOS) of high-density nuclear matter, establishing EOS-independent universal relations between global properties of neutron stars provides a practical method to constraining unobservable or difficult-to-observe properties using astronomical observations. Constructing universal relations between EOS-dependent properties (e.g., moment of inertia, tidal deformation, etc.) or combined properties (e.g., compactness) is common, and improving the precision of the universal relations may provide stricter constraint on the properties of neutron star. We find that in 3-dimensional space with mass and radius as the base coordinates, the points corresponding to properties of a neutron star described by different EOSs are almost located on the same surface. Thus, the universal relation between the property and the stellar mass-radius can be expressed through describing the surface. We demonstrate that the resulting universal relations have greater precision. For example, we construct high-precision universal relations for the moment of inertia, the f-mode frequency, and the dimensionless tidal deformation with respect to the mass-radius. With the increase in the size and accuracy of NICER observational data for neutron star masses and radii, these universal relations allow for more precise constraints on the unobservable or difficult-to-observe properties.展开更多
Introduction After the birth of the Universal Declaration of Human Rights （UDHR）, ＂universal human rights＂ became a novel formal legal term both in the field of jurisprudence and in the international community. T...Introduction After the birth of the Universal Declaration of Human Rights （UDHR）, ＂universal human rights＂ became a novel formal legal term both in the field of jurisprudence and in the international community. The notion of ＂universal human rights＂ indicates the ideal of ＂all human rights for all.＂ As the provision in Article 2 of the UDHR stated： ＂Everyone is entitled to all the rights and freedoms set forth in this Declaration, without distinction of any kind, such as race, color, sex, language, religion, politi cal or other opinion, national or social origin, property, birth or other status.＂ However, some nonWestern govern ment officials and intellectuals have expressed doubts about the justifi ability of the term, which seems only to be a reflection of unique Western culture rather than Asian or Arabian ones. At the Vienna World Human Rights Conference, many heads of state said that universal human rights cannot be compatible with nonWest em culture. Even Lee Kuan Yew, the former leader of Singapore, declared in 1996： ＂Asian values are universal values. European values are European values.＇＇~ This statement is obviously a rejection of the idea that human rights are universal. In contrast, universal rights extremists and human rights activists and NGOs, such as Amnesty International and Human Rights Watch, try to propagandize unified international human rights standards and international human rights re gimes. The debate continues from the diplomatic field to the academic field. But, in the foreseeable future,展开更多
In this study, we built upon the method proposed by Goon and Penco for analyzing the universality of thermodynamic relations with corrections in de Sitter (dS) black holes. Additionally, based on our analysis of non-l...In this study, we built upon the method proposed by Goon and Penco for analyzing the universality of thermodynamic relations with corrections in de Sitter (dS) black holes. Additionally, based on our analysis of non-linear magnetically charged black holes in dS spacetime, five-dimensional dS hairy spacetime, and five-dimensional charged-dS rotating black holes, we demonstrate the universality of thermodynamic relations in dS black holes. This establishes a universal conjecture relating shifted thermodynamic quantities for arbitrary black-hole backgrounds. We consider that these universal relations will offer new insights into the realm of quantum gravity.展开更多
A systematic investigation on the structural, magnetic and magnetocaloric properties of Pr_（0.6）Sr_（0.4-x）Ag_xMnO_3（x=0.05 and 0.1） manganites was reported. Rietveld refinements of the X-ray diffraction patterns...A systematic investigation on the structural, magnetic and magnetocaloric properties of Pr_（0.6）Sr_（0.4-x）Ag_xMnO_3（x=0.05 and 0.1） manganites was reported. Rietveld refinements of the X-ray diffraction patterns confirmed that all samples were single phase and crystallized in the orthorhombic structure with Pnma space group. Magnetic measurements in a magnetic applied field of 0.01T revealed that the ferromagnetic-paramagnetic transition temperature T_C decreased from about 293 to 290 K with increasing silver content from x=0.05 to 0.1. The reported magnetocaloric entropy change and relative cooling power for both samples were considerably remarkable with a △S_（max） value of 1.9 J/（kg·K）and maximum RCP values of 100 J/kg, under a magnetic field change（？μ0H） equal to 1.8T. The analysis of the universal curves gave an evidence of a second order magnetic transition for the studied samples. The magnetic field influence on both the magnetic entropy change and the relative cooling power was also studied and discussed.展开更多
The error propagation for general numerical method in ordinarydifferential equations ODEs is studied. Three kinds of convergence, theoretical, numerical and actual convergences, are presented. The various components o...The error propagation for general numerical method in ordinarydifferential equations ODEs is studied. Three kinds of convergence, theoretical, numerical and actual convergences, are presented. The various components of round-off error occurring in floating-point computation are fully detailed. By introducing a new kind of recurrent inequality, the classical error bounds for linear multistep methods are essentially improved, and joining probabilistic theory the “normal” growth of accumulated round-off error is derived. Moreover, a unified estimate for the total error of general method is given. On the basis of these results, we rationally interpret the various phenomena found in the numerical experiments in part I of this paper and derive two universal relations which are independent of types of ODEs, initial values and numerical schemes and are consistent with the numerical results. Furthermore, we give the explicitly mathematical expression of the computational uncertainty principle and expound the intrinsic relation between two uncertainties which result from the inaccuracies of numerical method and calculating machine.展开更多
The interpretation of Chinese relative clauses has become of significant interest in sentence processing research, since some studies found that Chinese comprehension patterns violate the well-known universal subject ...The interpretation of Chinese relative clauses has become of significant interest in sentence processing research, since some studies found that Chinese comprehension patterns violate the well-known universal subject relatives preference proposed by NAPH theory and proved by cross-linguistic studies. The current study uses the neuropsychological measure of ERP. It supports such a language-specific phenomenon, with the results showing that both subject- and object- modifying subject relatives eliciting larger ERP components than object relatives. The results suggest that object relatives are easier to process than subject relatives at both modifying positions, challenging the claim of universal subject preference for all languages. In addition, this study casts doubts on CWO and working memory-based DLT models despite results being compatible with them, and concludes that none of the current models are comprehensive enough to account for the data. Finally, this study offers a piece of evidence for the garden path effect caused by the surface NVN word order in the Chinese relative clause. All in all, this study adds to the evidence that processing preference is not universal. It contributes to a comprehensive model of how complex structures are processed.展开更多
基金Supported by the National Natural Science Foundation of China(12375144,11975101)the Natural Science Foundation of Guangdong Province,China(2022A1515011552)。
文摘Given the significant uncertainty in the equation of state (EOS) of high-density nuclear matter, establishing EOS-independent universal relations between global properties of neutron stars provides a practical method to constraining unobservable or difficult-to-observe properties using astronomical observations. Constructing universal relations between EOS-dependent properties (e.g., moment of inertia, tidal deformation, etc.) or combined properties (e.g., compactness) is common, and improving the precision of the universal relations may provide stricter constraint on the properties of neutron star. We find that in 3-dimensional space with mass and radius as the base coordinates, the points corresponding to properties of a neutron star described by different EOSs are almost located on the same surface. Thus, the universal relation between the property and the stellar mass-radius can be expressed through describing the surface. We demonstrate that the resulting universal relations have greater precision. For example, we construct high-precision universal relations for the moment of inertia, the f-mode frequency, and the dimensionless tidal deformation with respect to the mass-radius. With the increase in the size and accuracy of NICER observational data for neutron star masses and radii, these universal relations allow for more precise constraints on the unobservable or difficult-to-observe properties.
文摘Introduction After the birth of the Universal Declaration of Human Rights （UDHR）, ＂universal human rights＂ became a novel formal legal term both in the field of jurisprudence and in the international community. The notion of ＂universal human rights＂ indicates the ideal of ＂all human rights for all.＂ As the provision in Article 2 of the UDHR stated： ＂Everyone is entitled to all the rights and freedoms set forth in this Declaration, without distinction of any kind, such as race, color, sex, language, religion, politi cal or other opinion, national or social origin, property, birth or other status.＂ However, some nonWestern govern ment officials and intellectuals have expressed doubts about the justifi ability of the term, which seems only to be a reflection of unique Western culture rather than Asian or Arabian ones. At the Vienna World Human Rights Conference, many heads of state said that universal human rights cannot be compatible with nonWest em culture. Even Lee Kuan Yew, the former leader of Singapore, declared in 1996： ＂Asian values are universal values. European values are European values.＇＇~ This statement is obviously a rejection of the idea that human rights are universal. In contrast, universal rights extremists and human rights activists and NGOs, such as Amnesty International and Human Rights Watch, try to propagandize unified international human rights standards and international human rights re gimes. The debate continues from the diplomatic field to the academic field. But, in the foreseeable future,
基金Supported by the National Natural Science Foundation of China(12375050,12075143)the Natural Science Foundation of Shanxi Province,China(202203021221209)the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices(KF202403)。
文摘In this study, we built upon the method proposed by Goon and Penco for analyzing the universality of thermodynamic relations with corrections in de Sitter (dS) black holes. Additionally, based on our analysis of non-linear magnetically charged black holes in dS spacetime, five-dimensional dS hairy spacetime, and five-dimensional charged-dS rotating black holes, we demonstrate the universality of thermodynamic relations in dS black holes. This establishes a universal conjecture relating shifted thermodynamic quantities for arbitrary black-hole backgrounds. We consider that these universal relations will offer new insights into the realm of quantum gravity.
基金supported by the Polish Government and WBI(Belgium)in a Frame of Mutual Scientific Exchange Visits between WBI and Polish Ministry under project with reference numbers 14794/PVB/BE.POL/AN/an/2016/28611 and Rhea 2015/245812
文摘A systematic investigation on the structural, magnetic and magnetocaloric properties of Pr_（0.6）Sr_（0.4-x）Ag_xMnO_3（x=0.05 and 0.1） manganites was reported. Rietveld refinements of the X-ray diffraction patterns confirmed that all samples were single phase and crystallized in the orthorhombic structure with Pnma space group. Magnetic measurements in a magnetic applied field of 0.01T revealed that the ferromagnetic-paramagnetic transition temperature T_C decreased from about 293 to 290 K with increasing silver content from x=0.05 to 0.1. The reported magnetocaloric entropy change and relative cooling power for both samples were considerably remarkable with a △S_（max） value of 1.9 J/（kg·K）and maximum RCP values of 100 J/kg, under a magnetic field change（？μ0H） equal to 1.8T. The analysis of the universal curves gave an evidence of a second order magnetic transition for the studied samples. The magnetic field influence on both the magnetic entropy change and the relative cooling power was also studied and discussed.
基金This work was supported by the Knowledge Innovation Key Project of Chinese Academy of Sciences inthe Resource Environment Field (KZCX1-203) Outstanding State Key Laboratory Project (Grant No. 49823002) the National Natural Science Foundation of C
文摘The error propagation for general numerical method in ordinarydifferential equations ODEs is studied. Three kinds of convergence, theoretical, numerical and actual convergences, are presented. The various components of round-off error occurring in floating-point computation are fully detailed. By introducing a new kind of recurrent inequality, the classical error bounds for linear multistep methods are essentially improved, and joining probabilistic theory the “normal” growth of accumulated round-off error is derived. Moreover, a unified estimate for the total error of general method is given. On the basis of these results, we rationally interpret the various phenomena found in the numerical experiments in part I of this paper and derive two universal relations which are independent of types of ODEs, initial values and numerical schemes and are consistent with the numerical results. Furthermore, we give the explicitly mathematical expression of the computational uncertainty principle and expound the intrinsic relation between two uncertainties which result from the inaccuracies of numerical method and calculating machine.
基金the project of"The Processing of Chinese Relative Clauses"at the University of Arizona with No.10-0363-02supported in part by the project of Superiority Subject in Jiangsu Province(20110101)the EGI corporation for its support of this research
文摘The interpretation of Chinese relative clauses has become of significant interest in sentence processing research, since some studies found that Chinese comprehension patterns violate the well-known universal subject relatives preference proposed by NAPH theory and proved by cross-linguistic studies. The current study uses the neuropsychological measure of ERP. It supports such a language-specific phenomenon, with the results showing that both subject- and object- modifying subject relatives eliciting larger ERP components than object relatives. The results suggest that object relatives are easier to process than subject relatives at both modifying positions, challenging the claim of universal subject preference for all languages. In addition, this study casts doubts on CWO and working memory-based DLT models despite results being compatible with them, and concludes that none of the current models are comprehensive enough to account for the data. Finally, this study offers a piece of evidence for the garden path effect caused by the surface NVN word order in the Chinese relative clause. All in all, this study adds to the evidence that processing preference is not universal. It contributes to a comprehensive model of how complex structures are processed.
