专业学位研究生教育——跨越式发展背后的尴尬及其化解

我国专业学位研究生教育近年来在规模与内涵上都得到了跨越式的发展。但是,人们的传统观念、制度上的不合理设计以及专业学位研究生教育质量不高等导致专业学位研究生教育在跨越式发展的背后却面对着社会认同度低、生源退而求其次、配套资源短缺、有学位无学历、自我迷失、办学宗旨异化等诸多尴尬。使公众充分认识开展专业学位研究生教育的重要性是化解尴尬的前提;推进专业学位研究生教育实现“双证“是化解尴尬的制度保障;推动专业学位研究生教育特色发展是化解尴尬的基础;促进专业学位研究生教育质量提升是化解尴尬的关键

Measurement of integrated luminosity of data collected at 3.773 GeV by BESIII from 2021 to 2024

We present a measurement of the integrated luminosity e+e- of collision data collected by the BESIII detector at the BEPCII collider at a center-of-mass energy of Ecm = 3.773 GeV. The integrated luminosities of the datasets taken from December 2021 to June 2022, from November 2022 to June 2023, and from October 2023 to February 2024 were determined to be 4.995±0.019 fb-1, 8.157±0.031 fb-1, and 4.191±0.016 fb-1, respectively, by analyzing large angle Bhabha scattering events. The uncertainties are dominated by systematic effects, and the statistical uncertainties are negligible. Our results provide essential input for future analyses and precision measurements

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^