Thoreau expresses his love for nature and criticism of materialism in Walden,emphasizing the harmonious relationship between nature and human beings.Besides this significance,rhetorical devices like simile,metaphor,pe...Thoreau expresses his love for nature and criticism of materialism in Walden,emphasizing the harmonious relationship between nature and human beings.Besides this significance,rhetorical devices like simile,metaphor,personification,parallelism,overstatement,irony and pun contribute to unique charm of this masterpiece's language and thoughts.展开更多
The mid-rapidity transverse momentum spectra of charmed mesons in Pb–Pb and pp(p)collisions are analyzed using the Tsallis–Pareto distribution derived from non-extensive statistics.We provide uniform descriptions of...The mid-rapidity transverse momentum spectra of charmed mesons in Pb–Pb and pp(p)collisions are analyzed using the Tsallis–Pareto distribution derived from non-extensive statistics.We provide uniform descriptions of both small and large systems over a wide range of collision energies and hadron transverse momenta.By establishing the relationship between the event multiplicity and Tsallis parameters,we observe that there is a signifi-cant linear relationship between the thermal temperature and Tsallis q parameter in Pb–Pb collisions at √sNN=2.76 TeV and 5.02 TeV.Further,the slope of the T–(q-1)parameter plot is positively correlated with the hadron mass.In addition,charmed mesons have a higher thermal temperature than light hadrons at the same q-1,indicat-ing that the charm flavor requires a higher temperature to reach the same degree of non-extensivity as light flavors in heavy-ion collisions.The same fit is applied to the trans-verse momentum spectra of charmed mesons in pp(p)collisions over a large energy range using the Tsallis–Pareto distribution.It is found that the thermal temperature increases with system energy,whereas the q parameter becomes saturated at the pp(p)limit,q-1=0.142±0.010.In addition,the results of most peripheral Pb–Pb collisions are found to approach the pp(p)limit,which suggests that more peripheral heavy-ion collisions are less affected by the medium and more similar to pp(p)collisions.展开更多
A method to determine the value of the ratio of charmed baryon to meson in e^(+)e^(-) annihilation is investigated.Using the data of CLEO,HRS and MARK Ⅱ groups,we obtain f≡B_(c)/M_(c)=0.21±0.05,0.24±0.08 a...A method to determine the value of the ratio of charmed baryon to meson in e^(+)e^(-) annihilation is investigated.Using the data of CLEO,HRS and MARK Ⅱ groups,we obtain f≡B_(c)/M_(c)=0.21±0.05,0.24±0.08 and 0.33±0.05,for √s=5.2,10.55 and 29GeV,respectively.展开更多
Teachers do not just simply and mechanically transfer knowledge from one brain to another.Their work is also emotive communication with students.So teachers’ personality directly influences their students’ learning ...Teachers do not just simply and mechanically transfer knowledge from one brain to another.Their work is also emotive communication with students.So teachers’ personality directly influences their students’ learning interest and efficiency greatly.This paper discusses some strategies of perfecting teachers’ personality charm.展开更多
Poetical Sketches,Songs of Innocence and of Experience,the early part of Blake’s compositions,are his best-known and most widely read works.The lyrics in these books are full of charm,many of which have become the cl...Poetical Sketches,Songs of Innocence and of Experience,the early part of Blake’s compositions,are his best-known and most widely read works.The lyrics in these books are full of charm,many of which have become the classics of English poetry.Blake is worthy of the title of the first English Romantic poet for his short poems with great appeal and enduring power.展开更多
文摘Thoreau expresses his love for nature and criticism of materialism in Walden,emphasizing the harmonious relationship between nature and human beings.Besides this significance,rhetorical devices like simile,metaphor,personification,parallelism,overstatement,irony and pun contribute to unique charm of this masterpiece's language and thoughts.
基金This is supported by the National Key Research and Development Program of China(Nos.2018YFE0205200 and 2018YFE0104700)National Natural Science Foundation of China(Nos.11890712 and 12061141008)+1 种基金Strategic Priority Research Program of CAS(No.XDB34030000)Anhui Provincial Natural Science Foundation(No.1808085J02).
文摘The mid-rapidity transverse momentum spectra of charmed mesons in Pb–Pb and pp(p)collisions are analyzed using the Tsallis–Pareto distribution derived from non-extensive statistics.We provide uniform descriptions of both small and large systems over a wide range of collision energies and hadron transverse momenta.By establishing the relationship between the event multiplicity and Tsallis parameters,we observe that there is a signifi-cant linear relationship between the thermal temperature and Tsallis q parameter in Pb–Pb collisions at √sNN=2.76 TeV and 5.02 TeV.Further,the slope of the T–(q-1)parameter plot is positively correlated with the hadron mass.In addition,charmed mesons have a higher thermal temperature than light hadrons at the same q-1,indicat-ing that the charm flavor requires a higher temperature to reach the same degree of non-extensivity as light flavors in heavy-ion collisions.The same fit is applied to the trans-verse momentum spectra of charmed mesons in pp(p)collisions over a large energy range using the Tsallis–Pareto distribution.It is found that the thermal temperature increases with system energy,whereas the q parameter becomes saturated at the pp(p)limit,q-1=0.142±0.010.In addition,the results of most peripheral Pb–Pb collisions are found to approach the pp(p)limit,which suggests that more peripheral heavy-ion collisions are less affected by the medium and more similar to pp(p)collisions.
文摘A method to determine the value of the ratio of charmed baryon to meson in e^(+)e^(-) annihilation is investigated.Using the data of CLEO,HRS and MARK Ⅱ groups,we obtain f≡B_(c)/M_(c)=0.21±0.05,0.24±0.08 and 0.33±0.05,for √s=5.2,10.55 and 29GeV,respectively.
文摘Teachers do not just simply and mechanically transfer knowledge from one brain to another.Their work is also emotive communication with students.So teachers’ personality directly influences their students’ learning interest and efficiency greatly.This paper discusses some strategies of perfecting teachers’ personality charm.
文摘Poetical Sketches,Songs of Innocence and of Experience,the early part of Blake’s compositions,are his best-known and most widely read works.The lyrics in these books are full of charm,many of which have become the classics of English poetry.Blake is worthy of the title of the first English Romantic poet for his short poems with great appeal and enduring power.
