新图书馆综合布线方案应考虑的几个问题

综合布线系统是大厦智能化管理的基础。文章对新图书馆在综合布线过程中值得考虑的几个问题,结合湖南科技大学在综合布线过程中的经验进行了分析。参考文献5。     

试论图书馆文献评价

图书馆文献资源的评价,包括馆藏资源评价和网上资源评价两方面内容。这对加强图书馆的文献资源建设和读者工作,加强当代图书馆的服务功能,非常重要。本文讨论馆藏资源和网上资源评价的内容、要素、评价方法、评价步骤等等。参考文献11。     

医学学术期刊实施继续医学教育的内容及方法

为了充分发挥医学学术期刊的教育作用 ,从思想道德 ,科研方法 ,新知识、新理论、新技术 ,论文写作方法 ,标准化、规范化等方面论述医学学术期刊实施继续医学教育的内容和方法     

全面贯彻"三个代表"重要思想努力办好科学技术期刊

论述把"代表中国先进社会生产力的发展要求"作为办刊的宗旨,把"代表中国先进文化的前进方向"作为办刊方向,把"代表中国最广大人民的根本利益"作为刊物的根本利益的重要性.提出在不断提高我国科技期刊全面质量的实践中贯彻"三个代表"重要思想的一些措施和途径.     

Decentralized event-triggered H∞ control for switched systems with network communication delay

This paper is concerned with the decentralized event-triggered H_∞ control for switched systems subject to network communication delay and exogenous disturbance. Depending on different physical properties, the system state is divided into multiple communication channels and decentralized sensors are employed to collect signals on these channels. Furthermore, decentralized event-triggering mechanisms (DETMs) with a switching structure are proposed to determine whether the sampled data needs to be transmitted. In particular, an improved data buffer is presented which can guarantee more timely utilization of the sampled data. Then, with the proposed DETMs and data buffer, a time-delay closed-loop switched system is developed. After that, sufficient conditions are presented to guarantee the H_∞ performance of the closed-loop switched system by utilizing the average dwell time and piecewise Lyapunov functional method. Since the event-triggered instants and the switching instants may stagger with each other, the influence of their coupling on the H_∞ performance analysis is systematically discussed. Subsequently, sufficient conditions for designing the event-triggered state feedback controller gains are provided. Finally, numerical simulations are given to verify the effectiveness of the proposed method.     

Model transformation based sliding mode control of discrete-time two-dimensional Fornasini–Marchesini systems

This paper investigates the problem of sliding mode control (SMC) for discrete-time two-dimensional (2-D) systems subject to external disturbances. Given a 2-D Fornasini–Marchesini (FM) local state space model, attention is focused on designing the 2-D sliding surface and sliding mode controller, which guarantees the resultant closed-loop system to be asymptotically stable. Particularly, this problem is solved using the model transformation based method. First of all, sufficient conditions are formulated for the existence of a linear sliding surface guaranteeing the asymptotic stability of the equivalent sliding mode dynamics. Based on this, a sliding mode controller is synthesized to ensure that the associated 2-D FM system satisfies the reaching condition. The efficiency of the proposed 2-D SMC law design is shown by a numerical example. This paper extends the idea of model transformation to the 2-D systems and solves the SMC problem of a more general 2-D model in FM type for the first time.     

开放式创新视角下企业基于跨边界协同的新型追赶路径与模式初探

随着越来越多中国企业进入跟跑、并跑、领跑“三跑并存”的新型追赶阶段,如何有效配置与整合内外部资源成为企业能否实现全面追赶的关键问题。考虑到传统技术追赶理论对开放式创新范式下的追赶战略解释力有限,本文通过整合中国转型背景下的企业创新实践和相关研究,构建了一个开放式创新视角下的基于跨边界协同的新型追赶框架,并揭示了后发企业如何跨边界协同内外部资源,塑造动态平衡的新型追赶路径与模式。     

Ecological principle meets cancer treatment: treating children with acute myeloid leukemia with low-dose chemotherapy

Standard chemotherapy regimens for remission induction of pediatric acute myeloid leukemia (AML) are associated with significant morbidity and mortality. We performed a cohort study to determine the impact of reducing the intensity of remission induction chemotherapy on the outcomes of selected children with AML treated with a low-dose induction regimen plus granulocyte colony stimulating factor (G-CSF) (low-dose chemotherapy (LDC)/G-CSF). Complete response (CR) after two induction courses was attained in 87.0% (40/46) of patients receiving LDC/G-CSF. Post-remission therapy was offered to all patients, and included standard consolidation and/or stem cell transplantation. During the study period, an additional 94 consecutive children with AML treated with standard chemotherapy (SDC) for induction (80/94 (85.1%) of the patients attained CR after induction II, P = 0.953) and post-remission. In this non-randomized study, there were no significant differences in 4-year event-free (67.4 vs. 70.7%; P = 0.99) and overall (70.3 vs. 74.6%, P = 0.69) survival in the LDC/G-CSF and SDC cohorts, respectively. After the first course of induction, recovery of white blood cell (WBC) and platelet counts were significantly faster in patients receiving LDC/G-CSF than in those receiving SDC (11.5 vs. 18.5 d for WBCs (P < 0.001); 15.5 vs. 22.0 d for platelets (P < 0.001)). To examine the quality of molecular response, targeted deep sequencing was performed. Of 137 mutations detected at diagnosis in 20 children who attained hematological CR after two courses of LDC/G-CSF (n = 9) or SDC (n = 11), all of the mutations were below the reference value (variant allelic frequency <2.5%) after two courses, irrespective of the treatment group. In conclusion, children with AML receiving LDC/G-CSF appear to have similar outcomes and mutation clearance levels, but significantly lower toxicity than those receiving SDC. Thus, LDC/G-CSF should be further evaluated as an effective alternative to remission induction in pediatric AML.     

武汉大学面向本科生的数据素养通识课程的建设与思考

[目的/意义] 旨在通过分享武汉大学数据素养通识课程的建设过程，为同行开展相关工作提供参考。[方法/过程] 通过案例分析、数据统计和数据挖掘可视化方法对"武大通识3.0"背景下的《数据素养与数据利用》课程的教学目标、教学内容、教学特色以及教学效果进行分析，探索课程体系的合理性。[结果/结论] 授课方式和课内外实践内容的设置能够很好地调动学生学习的积极性，提高学习效果；课程考核结果、学生学习前后的问卷调查及课后反馈表明，课程学习明显提升了学生的数据素养。