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1.
【目的】 为期刊编辑及时、准确地处理Meta分析类稿件提供参考依据,以期提高期刊编辑的工作效率和期刊来稿质量。【方法】 调查2011年11月1日—2017年11月1日《中国卫生统计杂志》在线投稿系统中Meta分析类稿件,深入分析119篇样本稿件的审理过程,归纳退稿原因并总结审稿策略。【结果】 119篇稿件中,仅33篇稿件已发表,20篇稿件仍在审理过程中,66篇稿件被退稿。退稿原因包括选题创新性差、文献检索不当、文献纳入与排除标准不严谨、流程图不规范、异质性分析不当、发表偏倚分析不当、讨论欠佳等。【结论】 编辑审读Meta分析类稿件时,应加强主题选取和相关文献的搜集、纳入文献的筛选方法及质量评价、数据的统计学处理和结果解释4个方面的审查,减少不合格文献的数量。  相似文献   
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阚洪亮 《科技广场》2012,(10):107-109
针对铝电解控制系统的大滞后、大惯性以及动态特性随工况变化的不确定性等特点,本文提出了ADRC技术的氧化铝浓度控制方案。该控制方案能使铝电解过程很快进入稳态,超调量较小,提高了铝电解过程的动态和稳态性能。  相似文献   
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基于线性自抗扰控制的船舶航迹积分滑模控制器   总被引:3,自引:0,他引:3  
为解决欠驱动船舶航迹直线和曲线跟踪控制问题,选取能解决航向不稳定等非线性问题的Bech模型,借助双曲正切函数,构造期望艏向方程,将航迹控制问题转化为航向控制问题。设计3阶跟踪微分器,对期望艏向及其微分信号进行精确提取。采用变结构积分滑模面函数设计非线性误差反馈控制律,加快系统收敛速度,提出基于线性自抗扰控制(Linear Active Disturbance Rejection Control,LADRC)的船舶航迹积分滑模控制器。该控制器的线性扩张状态观测器对系统内外总扰动进行在线估计与实时补偿;引入Hurwitz多项式,减少需整定的参数。仿真结果表明,航迹收敛快速准确,无超调,对外界干扰具有较强的鲁棒性。控制器参数具有一定的普适性,故其适用范围广。  相似文献   
4.
【目的】 为解决审稿专家信息更新不及时、编辑凭经验送审等因素导致拒审的问题,提出一种基于向量空间模型(Vector Space Model,VSM)和余弦相似度的稿件精准送审方法。【方法】 首先,结合文献调研和《数据分析与知识发现》送审情况分析拒审的关键原因;其次,在中国知网中获取该刊审稿专家(155人)近5年发表的全部论文(1805篇),并使用词频-逆文档频度(Term Frequency-Inverse Document Frequency,TF-IDF)方法计算  相似文献   
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The present study represents our continuing effort to validate a 'spurning scale' for teachers, based on a model of spurned helpers' reactions. Three approaches were used to examine the construct validity of the scale: the spurning scores of teachers working with more achieving students versus the scores of teachers teaching less achieving students; the relationships between the spurning scores and job satisfaction and turnover scores; and the relationships between the spurning scores and scores indicative of stress arising from interactions with one's students, and with one's supervisor. Serving teachers in Guangzhou (China) responded to a questionnaire containing the variables of interests. Overall, the results provided further evidence for the validity of the scale.  相似文献   
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This report investigated relationships among group members’ personalities, confirming interaction, and democratic decision making. Using the Big Five personality measure and a self‐report measure of confirming interaction, it was hypothesized that confirming interaction would be reported more often in groups whose members are relatively extraverted, agreeable, conscientious, non‐neurotic, and open to experience. Of these personality factors, one had a clear association: Groups with higher mean levels of agreeableness reported higher levels of confirming interaction. In addition, perceived confirming interaction was hypothesized to be positively correlated with members’ perceptions of democratic decision making. This hypothesis was also supported.  相似文献   
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学术期刊退稿中编辑与作者的沟通技巧   总被引:1,自引:1,他引:0  
【目的】 研究学术期刊退稿中编辑与作者的沟通技巧和将消极因素转变为积极影响的退稿通知书写形式。【方法】 在互联网时代,探讨学术期刊编辑处理退稿时用心交流、辅以技巧、媒介融合的交流理念和沟通技巧。【结果】 通过编辑与作者用心沟通交流,增加作者信赖感和忠诚度,扩大作者队伍,提升期刊影响力,树立期刊负责任的品牌形象;构建起作者、编辑、学术期刊之间的和谐生态圈,提高学术期刊竞争力。【结论】 在互联网时代,学术期刊编辑必须因地制宜,采取媒介融合的手段,运用交流理念和沟通技巧,有效地解决退稿问题。  相似文献   
10.
Objective: To explore the effects of cytomegalovirus (CMV) infection on rejection-related gene expression in the endothelial cells of renal transplantation recipients. Methods: Endothelial cells (ECs) were cultured and stimulated by a variety of factors: A, normal control group; B, inactivated human cytomegalovirus (HCMV) infection group; C, HCMV infection group; D, HCMV supematant infection group; and E, ganciclovir HCMV group. Expression of intercellular adhesion molecule-1 (ICAM-1) and major histocompability complex (MHC) class Ⅰ and class Ⅱ antigens was detected by flow cytometry (FCM) and immuno-histochemistry. Results: We found characteristic CMV-infected ECs in this study. There were no significant differences among groups A, B and D (P>0.05). Although the expression levels of ICAM-1 were not significantly different between groups C and E (P>0.05), the ICAM-1 expression in these two groups was significantly higher than that in group A (P<0.05). ICAM-1 expression was detected in groups C and E, while there was no expression in groups A, B and D. Furthermore, there was no significant difference of ICAM-1 mRNA expression between groups C and E (P>0.05). Human leucocyte antigen (HLA)-ABC expression was detected in all the groups, while HLA-DR expression was only detected in groups C and E. There were no significant dif-ferences of HLA-ABC and HLA-DR expression among groups A, B and D (P>0.05). However, the HLA-ABC and HLA-DR expression levels in groups C and D were higher than those of the remaining groups previously reported (P<0.05). Meanwhile, the HLA-ABC and HLA-DR expression levels in group E were lower than those of group C (P<0.05). Conclusion: CMV could up-regulate the expression levels of ICAM-1 and MHC antigens, which was closely related to allograft rejection.  相似文献   
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