分类： 物理学 >> 核物理学 提交时间： 2025-06-07
摘要： In current work, the fission property of $^{180}$Hg is investigated based on the Skyrme density functional theory (DFT). The impact of the high-order hexadecapole moment (q$_{40}$) is found at large deformations. With the q$_{40}$ constraint, a smooth and continuous potential energy surfaces (PES) could be obtained. Especially, the hexadecapole moment constraint is essential to get proper scission configurations. The static fission path based on the PES supports the asymmetric fission of $^{180}$Hg. The asymmetric distribution of the fission yields of $^{180}$Hg is further reproduced by the time-dependent generator coordinate method (TDGCM), and agrees well with the experimental data.
分类： 物理学 >> 核物理学 提交时间： 2025-06-06
摘要： Leakage neutron spectra from a pure 238U slab sample (dimensions: 100 mm × 100 mm × 20 mm) bombarded by broad-spectrum neutrons were measured at 0° using the time-of-flight method. The experiment was carried out at the Radioactive Ion Beam Line of the Heavy Ion Research Facility in Lanzhou at the Institute of Modern Physics, Chinese Academy of Sciences. Broad-spectrum neutrons were generated by bombarding a tungsten target with 80.5 MeV/u 12C ions. Additionally, calculations were performed in GEANT4 with the INCL, BIC and BERT physics models, in combination with the evaluated nuclear data libraries ENDF/BVIII, JEFF-3.3, and JENDL-4.0, and the theoretical results for the leakage neutron spectrum of the 238U were obtained under the same experimental conditions. The results indicate that the GEANT4 calculations can reasonably reproduce the experimental data.
分类： 物理学 >> 核物理学 提交时间： 2025-06-05
Peng, Mr. Xiaoyu
Fang, Mr. Changhao
Lin, Mr. Shin-Ted
Liu, Prof. Shukui
Li, Mr. Hanyu
Li, Miss Qianyun
LiRen, Mr. Mingjie
Liu, Dr. Yu
Shi, Mr. Haoyu
Wang, Miss Qin
Xing, Mr. Haoyang
Yan, Dr. Yulu
Yang, Dr. Litao
Yue, Prof. Qian
Zhu, Mr. J.J.
摘要： We present the results of an experiment conducted to measure cosmic-ray muons and muon-induced fluxes at the China Jinping Underground Laboratory. Utilizing a 28-liter 0.5% gadolinium-doped liquid scintillator detector, which operated stably for 412 days in a 1-meter-thick polyethylene shielding, we reconstructed saturated signal pulses and pulse shape discrimination to facilitate measurements across a range starting from 0.2 MeV. The event rates incorporating mountain geometry effects for cosmic rays and their induced particles are derived. The experimental results show that cosmic ray muon flux is (3.64 ± 0.69(stat.) ± 0.25(syst.)) × 10^{-10} cm^{-2} s^{-1}, muon-induced electron flux is (5.59 ± 1.06(stat.) ± 0.40(syst.)) × 10^{-10} cm^{-2} s^{-1}, and the upper limit of the muon-induced neutron flux is 3.52 × 10^{-9} cm^{-2} s^{-1}. They indicated that no significant excess is observed at a 90% confidence-level, particularly no muon-induced neutrons above 10 MeVee is detected.
分类： 物理学 >> 核物理学 提交时间： 2025-06-05
Qiu, Mr. Zhichao
zhuang, Dr. kun
Wang, Mr. Xiaoyu
Gao, Mr. Yong
Cao, Mr. Yun
Liu, Mr. Daping
Chen, Dr. Jingen (Nuclear energy)
Wang, Sipeng
摘要： As the key technology of space exploration, space power has always been a research interest of international researchers. A lot of research work has been carried out around the world for the space nuclear reactor using heat pipe, liquid metal and gas cooling method. With the development of molten salt reactor of IV generation reactor system, molten salt dissolving fissile material and acting as a coolant at the same time has become a new cooling scheme, which provides new ideas for the design of space nuclear reactor. In this study, a novel reactor Liquid-Solid Dual-Fuel Space Nuclear Reactor (LSSNR) was preliminarily proposed combining the molten salt fuel and cross-shaped spiral solid fuel for the design goals of 30-year lifetime and active core weight less than 200 kg. Monte Carlo neutron transport code OpenMC based on ENDF/B-VII.1 library was employed for neutronics design in aspect of fuel type, cladding material, reflector material and spectral shift absorber. Then, the thickness of control drum absorber was optimized to meet the requirement of the sufficient shutdown margin, lower solid fuel enrichment, and 30 EFPY operation lifetime. Finally , UC solid fuel with U-235 enrichment of 80.98 wt.% and B4C thickness of 0.75 cm were adopted in LSSNR, and BeO was adopted as reflector and matrix material of control drum. A spectral shift absorber Gd2O3 was used to avoid the sub-critical LSSNR returning to criticality at a launch accident. The keff with control drum rotating innermost position is 0. 954949, and the keff reaches 1.00592 after 30 EFPY operation. The total mass of the active core is 160.65 kg. In addition, the thermal-hydraulic feasibility of LSSNR using cross-shaped spiral fuel was analyzed based on a 4/61 reactor core model. The structure of cross-shaped spiral fuel achieves enhanced heat transfer by generating turbulence, leads to a uniform temperature distribution of the coolant flow field, and reduces local temperature peaks. Based on LSSNR scheme, some neutronic characteristics were analyzed. Results demonstrate that the LSSNR has strongly negative reactivity coefficients due to the thermal expansion of liquid fuel, and the fission gas-induced pressure meets safety requirements. After 100 years of the end of core life, the total radioactivity of reactor core is reduced by 99% and is 7.1305 Ci.
分类： 法学 >> 法学其他学科 提交时间： 2025-06-05
摘要： 1979年律师制度恢复以来，《律师法》历经四次修订，现在进入第五次修订引发国人尤其是律师行业的广泛关注。本文重点分析律师管理机制和律师治理体系中存在的重要问题，包括律师的属性、内部专业化和外部资本化竞争、中国不能成为诉讼大国、全球化竞争等问题。经过实证和比较研究认为，一是律师行业已经从高速发展阶段进入高质量发展阶段，应建立健全法律服务大市场的准入和监管制度；二是中国特色社会主义律师制度需要兼顾律师职业的人民性、职业性和商业性，应完善律师调解制度和探索建立律师事务所商事登记制度和律师分级出庭制度；三是应修订律师事务所命名规则，打造国际一流律师事务所，提升我国律师涉外法律服务能力和全球法律服务市场竞争力。这些研究和发现有利于进一步优化中国特色社会主义律师制度，促进律师行业高质量可持续发展，为《律师法》的修订提供一些有益的思考。
分类： 物理学 >> 核物理学 提交时间： 2025-06-04
摘要： A new Monte Carlo optimization (MCO) method named Hybrid Adaptive Response Surface Methodology Genetic Algorithm (RSM-GA) Monte Carlo Optimization (HRG-MCO) is proposed to address the strong empirical dependence and low efficiency of global multi-parameter optimization in traditional neutronics design. HRG-MCO integrates the advantages of Response Surface Methodology (RSM) and Genetic Algorithm (GA). Specifically, neutron MC simulation results are iteratively utilized to adaptively construct an RSM model, ensuring the required accuracy. Subsequently, GA is employed to perform multi-parameter optimization based on the constructed RSM model, which makes it possible to rapidly determine the optimal design parameters. Then, these optimized parameters are fed back into the MC simulation model to derive the final optimized values. The superior optimization efficiency of the HRG-MCO method is demonstrated through a comparative analysis with the exhaustive enumeration (EE) method and the standalone GA. To further validate its effectiveness, the method is applied to the optimization design of moderator-collimator for accelerator-based thermal neutron radiography. Two optimization tasks are performed in this study: (1) determining the optimal efficiencies under different source neutron energies and (2) optimization of thermal neutron-induced photon yield ratio. The results underscore the effectiveness and practical applicability of the HRG-MCO method in neutronics optimization design.
分类： 物理学 >> 核物理学 提交时间： 2025-06-04
Zuo, Dr. Taisen
Lu, Mr. Zhanjiang
Zhu, Mr. Hong
Han, Dr. Zehua
Deng, Mr. Changdong
He, Dr. Yongcheng
Tian, Dr. Long
Wang, Prof. Tianhao 王天昊
Xiao, Mr. Songwen
Zhenqiang, Mr. He
Lin, Mr. Xiong
Ma, Dr. Changli
Cheng, Dr. He
摘要： The focusing of pulsed neutrons can increase neutron flux, reduce sample volume, and enable access to smaller scattering angles. Consequently, it represents a critical challenge for next-generation spallation neutron sources. The primary difficulty stems from the inherent chromatic aberration of white neutrons. Here, a new compact Nested Rotating Sextupole Permanent Magnet (Nest-Rotating-SPM) lens, with a total length of 200 mm, was developed and tested at the Very Small Angle Neutron Scattering (VSANS) instrument at the China Spallation Neutron Source (CSNS). Through synchronization of the outer sextupole lens rotation with the neutron pulse from the source, we achieved aberration-free focusing of neutrons with wavelengths between 11.0 Å and 15.5 Å for the first time. The implementation of water cooling and carbon fiber winding ensures both magnetic field stability and mechanical robustness of the inner sextupole. The compact design incorporating bridge sextupoles enables Lego-like assembly of multiple lens units for focusing pulsed neutrons with wavelengths shorter than 10.0 Å, making it practically useful in a pulsed neutron instrument to enhance neutron flux or access lower scattering vectors. Additional research is required to mitigate background noise.
分类： 物理学 >> 核物理学 提交时间： 2025-06-04
摘要： Due to its excellent heat transfer performance and compact structure, the printed circuit heat exchanger (PCHE) has become the mainstream heat exchange equipment between the secondary circuit of the supercritical carbon dioxide Brayton cycle and the primary circuit of the lead-cooled fast reactor. During the operation of the Lbe-SCO2 PCHE, the huge pressure difference between the cold side (high pressure S-CO2) and the hot side (atmospheric pressure lead-bismuth eutectic) combined with the corrosion characteristics of the lead-bismuth eutectic could lead to the failure of the PCHE pressure boundary, potentially resulting in CO2 leakage into the primary circuit. This study used the CFD software ANSYS Fluent to numerically simulate the PCHE pressure boundary failure accident. The feasibility of the analysis method is verified by decomposing the complex accident conditions into typical characteristic conditions for experimental simulation verification. The results show that during the accident transient process, the pressure in the hot channel initially exhibits cyclic fluctuations, rising sharply within 0.1ms and then gradually stabilizing; while the pressure in the cold channel remains essentially unchanged at the operating pressure. The simulation revealed that after 15ms after the accident, large quantities of carbon dioxide were detected at the inlet and outlet of the hot side, indicating a risk of intrusion of the secondary circuit's working medium into the reactor.
分类： 物理学 >> 核物理学 提交时间： 2025-06-04
Liu, Mr. Weirong
Shi, Dr. Pengcheng
Liu, Dr. Yingdu
Zhu, Miss Zhiyun
Zhang, Miss Siyu
Bao, Dr. Jie
Ouyang, Dr. Xiaoping
摘要： In this work, we report a scintillator used for neutron/gamma discrimination, which consists of a polyvinyltoluene matrix loaded with monomers of dimethoxydiphenylsilane (DDS), and fluor dyes, namely 2,5-diphenyloxazole and 7-diethylamino-4-methylcoumarin as the primary fluorophore and wavelength-shifting, respectively. The DDS is an organosilicon compound containing double benzene rings that facilitates fluorescence emission and radiation resistance. Several measurements were performed to explore the scintillators optical and detection properties, including $^{238}$Pu-Be neutron radiation and relative light yield conducted by 137Cs gamma-ray source. It is found that the synthesized plastic scintillators are capable of excellently discriminating between neutron and gamma-rays. They exhibit a light output that are comparable to the commercial scintillator (EJ-200). The scintillators are low-cost productive, highly transparent, and somewhat soft but hard enough for post-production processing (machine cutting and polishing). This design may contribute a new strategy for highly efficient neutron/gamma discrimination organic scintillators.
分类： 心理学 >> 临床与咨询心理学 提交时间： 2025-06-04
摘要： 在铸牢中华民族共同体意识的国家战略下，云南高职少数民族学生的心理危机干预需突破传统心理学范式，转向文化与心理互构的深层逻辑。本研究基于云南省高职教育的实证调研，整合心理人类学“文化生态断裂”理论与跨文化心理咨询“双文化能力”模型，构建“预防—干预—巩固”三级动态干预体系，并结合《关于以铸牢中华民族共同体意识为主线推进新时代民族工作高质量发展的意见》等政策导向，提出文化敏感性干预的实践路径。研究表明，通过文化认知重构、身份认同整合与系统支持网络建设，可有效提升少数民族学生心理弹性，为边疆地区职业教育的民族团结实践提供理论与方法创新。
分类： 物理学 >> 核物理学 提交时间： 2025-06-04
Yi, Mr. Chuqi
Han, Mr. Jifeng
Fan, Dr. Ruirui
Guo, Dr. Yuhang
He, Mr. Junhan
Lin, Dr. Weiping
Liu, Dr. Xingquan
Long, Mr. Yiyang
qian, Prof. sen 钱森
Qu, Dr. Guofeng
Song, Dr. Ruiqiang
Yi, Dr. Han
Wang, Dr. Zhigang
Zhao, Dr. Chaoyang
摘要： Cs2LiYCl6: Ce (CLYC) scintillator is sensitive to neutrons within a wide-energy range and has the potential to achieve wide-range neutron energy spectrum measurements. The direct neutron detection performance of a CLYC detector has been realized by utilizing the Back-n white neutron source at China Spallation Neutron Source (CSNS), where a 20 cm lead brick was designed to effectively shield the accompanying gamma flash from the neutron source. The detected neutron energy spectrum after passing through the lead brick is primarily distributed within the 0.1–300 MeV and exhibits identical four-peak structures, which are consistent with Geant4 simulation results. The peak energies of the 1st, 3rd, and 4th peaks match well, with the relative deviation being less than 6%. However, a large energy deviation has been found for the 2nd peak whose energy falls within the resonance energy region of lead, which indicates that the resonance reaction of lead might not be precisely simulated in Geant4. Due to the dominance of elastic scattering between neutrons and the main nuclides (6Li, 35Cl, 37Cl, 89Y, 133Cs, 140Ce) in the CLYC scintillator in the low-energy region, suppression has been found for reactions that are used for neutron detection reactions such as (n, p), (n, d), (n, t) and (n, α). This leads to a significant difference in overall intensity between the low-energy range within 0.1–3 MeV (1st and 2nd peaks) and the high-energy range within 5–64 MeV (3rd and 4th peaks). A large number of gamma signals were measured in the experiment, which were found to be prompt gamma rays generated from neutron reactions with CLYC, but not the associated gamma rays from the neutron source. This phenomenon is more pronounced for the high-energy region, these prompt gamma rays can be combined into the neutron pulses and render the neutron pulses to contain fast-decay components that originally only existed in gamma pulses, and further decrease the neutron gamma discrimination performance of CLYC. By establishing a wide-energy neutron response matrix entirely based on experimental measurements and utilizing the GRAVEL unfolding method, the white neutron energy spectrum in the range of 6–200 MeV was successfully unfolded. These results provide a critical reference for the accurate measurement and discrimination of neutron-gamma signals in radiation fields using CLYC detectors and indicate the feasibility of using CLYC detectors for wide-energy neutron spectrum measurements, highlighting its potential for applications in high-energy neutron experiments, space neutron detection, and other related fields.
分类： 物理学 >> 核物理学 提交时间： 2025-06-03
摘要： This study investigates neutron differential scattering cross sections off even Gadolinium isotopes (Gd-156, Gd-158, Gd-60) at various energies (1.5, 2.5, 4.1 and 7 MeV), comparing theoretical calculations with valuations from prominent nuclear data libraries (ENDF/B-VIII.0, JENDL-5 and EXFOR ) and available experimental data. Analysis reveals a characteristic maximum for the forward angles and a deep minimum in the angular distributions, thus indicating quasi-forbidden scattering angle range. Both theoretical and ENDF/B-VIII.0 results show excellent agreement in the forward direction at 1.5 MeV. However, discrepancies emerge at higher energies, particularly at 2.5 MeV, where neither ENDF/B-VIII.0 or JENDL-5 accurately reproduce experimental data, especially for Gd-160. Notably, the rotational nature of Gd-160, as indicated by its low first excited state energy and E4+/E2+ ratio, is not consistently reflected in the ENDF/B-VIII.0 evaluations. For 4.1 MeV, JENDL-5 demonstrates superior agreement with experimental data compared to ENDF/B-VIII.0 and theoretical calculations. At 7 MeV, multiple minima are observed in both theoretical and ENDF/B-VIII.0 results, predicting specific angular intervals with near-zero scattering. While theoretical calculations generally align with experimental and evaluated data at forward angles, deviations occur at backward angles, likely due to increased compound nucleus contributions. Despite the limited experimental data, particularly the reliance on Bauge’s team measurements, this study underscores the utility of theoretical models in providing structural insights into neutron scattering cross sections for deformed nuclei.
分类： 图书馆学、情报学 >> 图书馆学 提交时间： 2025-06-03
摘要： 我国基础教育正处于关键转型期，中小学青年教师面临日益加剧的非教学性负担，已成为制约教学效能与教育质量的重要因素。基于社会角色理论，本文采用扎根理论方法，对24位青年教师的深度访谈与150篇社交媒体博文进行质性分析，系统揭示其非教学性负担的形成机制。研究发现，非教学性负担的生成路径呈现为三重机制：“期望之网”一一多元主体理想投射，叠加过高角色期待；“镜中自我”一一身份撕裂认同失衡，造成角色混乱迷失；“负重前行”一一任务堆叠职责错位，引发角色实践困境重重，三者交织牵动，形成青年教师持续性的负担困局。为此，研究提出系统优化路径：重构“期望之网”，凝聚多方合力，重塑角色期待；修复“镜中自我”，增强认同支持，厘清身份边界；缓解“负重前行”，整治制度堆叠，优化任务结构，以期推动教师生态由“负荷积压”走向“有机支持”，赋能基础教育高质量发展。
分类： 图书馆学、情报学 >> 图书馆学 分类： 其他 >> 综合 提交时间： 2025-06-03
摘要： Sora应用于教育领域既是机遇也是挑战。一方面，Sora能够赋能教育回归育人本位：矫正教育异化、丰富个性化教育、可视化教和学。另一方面，Sora可能会破坏学校教育的系统性：导致教育平庸、造成教育混乱、引发学校危机。在人工智能全面融入教育的背景下，强调Sora在教育领域革新应用的同时也应当尽可能地规避其弊端，提出科学合理的应对措施：革新教育理念、升级教育活动、重塑教育生态，以促进人工智能与教育的和谐发展。
分类： 医学、药学 >> 预防医学与公共卫生学 提交时间： 2025-06-03 合作期刊: 《中国全科医学》
摘要： 背景 培养农村订单定向医学生是缓解农村医疗人力资源短缺的重要举措。截至2023年10月，已有三批订单定向医学毕业生完成了规定服务义务。然而，这些毕业生的职业发展情况及服务期满后是否继续留任基层，尚缺乏系统研究与明确结论。目的 基于订单定向医学生队列的8年面板数据，分析其职业生涯初期的职业发展特点及影响基层医疗卫生机构留任的关键因素，为我国订单定向医学毕业生的培养和管理提供政策建议。方法 自2010年起，选取青海大学、广西医科大学、九江学院和赣南医学院的订单定向医学毕业生，建立动态追踪队列。本研究使用2015~2019届毕业生的数据，共纳入2041人。队列通过年度线上问卷随访，连续8年追踪其职称晋升、职务任职、平均月收入及绩效工资占比等职业发展情况，分析合同期满后基层留任与流失的情况。采用描述性分析总结职业发展特点，通过多因素Logistic回归分析探讨订单定向医学毕业生基层留任的影响因素。结果 纳入的2041名订单定向医学毕业生中男1068名（52.3%）、女973名（47.7%）。至毕业第8年，92.0%（69/75）的订单定向医学毕业生获得主治医师职称，24.0%（18/75）担任行政职务，平均月收入为5573.4元，其中绩效工资占比为45.7%。截至2023年12月，共有618名订单定向医学毕业生完成合同，其中232名毕业生完成合同后留任，基层留存率为37.5%。在离开基层的386名毕业生中，进入县级以上医院136名，占比最高，为35.2%；其次是县级医院107名（27.7%）；攻读研究生29名（7.5%）。多因素Logistic回归分析结果显示，签约工作地是家乡所在县（市）（OR=2.74，95%CI=1.57~4.78，P=0.001）以及担任行政职务（OR=2.02，95%CI=1.14~3.59，P=0.016）是订单定向医学毕业生完成合同后基层留任的促进因素，毕业两年内通过执业医师资格考试（OR=0.37，95%CI=0.15~0.94，P=0.036）则是订单定向医学毕业生完成合同后基层留任的阻碍因素。结论 订单定向毕业生职业晋升速度快，超过半数合同期满后选择留在县级及以下基层医疗机构，有助于增强基层卫生人才队伍和提升基层医疗卫生服务水平。但需关注，毕业两年内获得医师资格的订单定向毕业生表现出更高的基层执业流动性。
分类： 地球科学 >> 地球科学其他学科 提交时间： 2025-06-03
摘要： 思政教育不仅关系着学生的人文素养塑造、政治素养、专业素养的塑造，也是培养学生创新精神和实践能力的关键。地理信息系统原理是地理信息科学及其相关专业的核心课程。本文结合地理信息系统原理课程的特点，从课程思政教学方法、课程思政教学内容和课程思政考核评价三个方面进行改革探索，以期更好的实现高校教育目标，为国家和社会培养更多具有高素质的地理信息专业人才。
分类： 医学、药学 >> 预防医学与公共卫生学 提交时间： 2025-06-03 合作期刊: 《中国全科医学》
摘要： 背景 糖尿病的发病率在逐年提升，我国将 2 型糖尿病的管理作为重要病种纳入到社区基本卫生服务中；但目前糖尿病的基层规范管理，尤其是质量及能力，尚存在差距。目的 了解上海市社区卫生机构糖尿病管理的现状并进行系统性质量评价，针对存在问题提出相应优化建议。方法 调研时间为 2022 年 5 月，调研对象包括，（1）社区卫生服务中心：上海市 16 个行政区的全部社区卫生服务中心，共 249 家机构；（2）社区全科医生：按照注册人数 50% 的比例采用简单随机抽样的方法选取 3 875 名社区全科医生。自行设计医疗机构问卷和全科医生调查问卷，调查社区卫生服务中心实施糖尿病管理状况，以及社区全科医生实施糖尿病规范化诊疗和管理现况。结果 上海社区卫生服务中心均可开展糖化血红蛋白检查，但糖尿病并发症筛查项目开展不足，只有 16.9% 的社区卫生服务中心可以开展神经传导速度检查；口服降糖药的种类比较齐全，但胰岛素种类单一，仅有 7.6% 的社区卫生服务中心配备有新型降糖药物 GLP-1 受体激动剂；仅 57.4% 社区卫生服务中心开设了糖尿病专病门诊。社区全科医生对糖尿病规范管理认可程度高，对糖尿病基层管理指南掌握情况良好，但对于糖尿病治疗药品的基础知识掌握欠佳，对口服降糖药物应用知识正确率仅为 27.9%、对胰岛素应用知识正确率仅为 29.0%；在新发糖尿病患者血糖较高和确诊糖尿病肾病时，社区全科医生更倾向于将患者直接转诊至上级医院专科。结论 上海市社区卫生服务中心开展糖尿病管理服务的基础设施、设备、药物等条件已基本满足质量要求；在药物使用知识方面存在差距；需要通过增加糖尿病并发症筛查相关检查检验项目、增加新型降糖药物及胰岛素种类、加强糖尿病专病门诊建设，以及提高全科医生的诊疗水平，规范全科医生诊疗行为等举措，进一步提升基层医疗卫生机构糖尿病管理质量和医疗能力。
分类： 图书馆学、情报学 >> 图书馆学 提交时间： 2025-06-03
摘要： 摘要：本文以中国古代藏书与阅读文化为研究对象，创新性地融合物质文化、空间叙事与前沿科技视角，探讨其背后的文化思想、社会影响和当代价值。文章运用人工智能、区块链、量子计算、生物科技和扩展现实等前沿技术，深入分析书籍的物质形态、装帧形式和存藏空间，以及个体阅读史，揭示其与古代文化传承之间的互动关系。研究重点关注技术赋能下古籍的数字化、语义分析、沉浸式体验构建、文物保护，以及微观叙事、伦理反思和跨文化比较。本文旨在为文化遗产保护、传承和创新提供新的理论视角和实践路径
分类： 图书馆学、情报学 >> 情报学 提交时间： 2025-06-03
摘要： [目的/意义］探讨智能体（Agent）技术在科技情报工作中的适配性与演进路径，回应情报工作日益增长的智能化和认知化需求。［方法/过程］基于智能体功能演进、能力分级与实践模式，系统总结其在科研与情报工作中的落地规律，结合情报学理论范式与技术演化趋势，重点剖析从管理信息系统（Management Information System, MIS）到情报分析系统（Intelligence System, IS）再到情报智能体（Documentation and Information Service Agent, DIS Agent）的演化路径及其引发的情报工作模式重塑。［结果/结论］研究发现，智能体以多模态感知、流程化执行和多智能体集群化协作等能力，推动情报工作从基于管理信息系统的“信息管理平台”向“动态认知服务体系”跃迁，预示着情报智能体时代的到来。与此同时，情报工作者的角色也由“全流程主导”转型为“任务意图设定者”和“过程质量监督者”，显著增强了任务的适配性、执行力和智能化水平。
分类： 医学、药学 >> 预防医学与公共卫生学 提交时间： 2025-06-03 合作期刊: 《中国全科医学》
摘要： 背景 随着人口老龄化和慢性病患者比例的增加，人民群众对基层医疗资源的需求呈多样化、复杂化的态势。不同地区、不同人群对基层医疗资源的需求存在差异，部分地区面临基层医疗资源匮乏的问题，严重制约基层医疗卫生服务的覆盖率和质量，极大影响居民的就医体验和健康状况。目的 为推动基层医疗卫生服务体系高质量发展，引入健康距离模型，分析 2011—2021 年我国基层医疗资源配置失配度的时空演变过程，为合理制订区域卫生规划，优化医疗资源配置方案、提高基层医疗卫生服务能力、推动医疗卫生服务高质量发展提供参考。方法 从卫生物力、人力、保障资源三个层面建立基层医疗资源失配度评价指标体系，从《中国卫生健康统计年鉴》《中国统计年鉴》获取数据，采用双层规划模型和健康距离模型测算 2011—2021 年基层医疗资源配置失配度。结果 2011—2021 年我国基层医疗资源配置整体失配度有明显的下降趋势，但是区际、省际间失配度差异不断扩大。2011 年东、中、西部地区失配度平均值分别为 0.633、0.624、0.754，分别为中度失配、轻度匹配和重度失配。2021 年东、中、西部地区失配度平均值分别为 0.479、0.522、0.639，分别为中度匹配、轻度匹配和中度失配。结论 尽管我国基层医疗资源配置的整体失配度呈下降趋势，但仍然存在明显的差异，医疗资源配置的不均衡性仍在加剧。为持续优化基层医疗配置，推动基层医疗卫生服务体系高质量发展，提升我国医疗卫生体系的效能，需注重区域间资源配置的均衡性，因地制宜地制定差异化政策，以进一步优化医疗资源配置，提升基层医疗卫生服务的覆盖率和质量。
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