英语文化教学策略评述

语言与文化是不可分割的,因此,文化习得也是语言习得的一部分。自从上世纪80年代以来,文化因素受到越来越普遍的重视。如何在外语教学领域里进行文化教学是中国外语教师所面临的问题。本文比较不同的文化教学策略,寻找有效的文化教授方法。     

新课程下的数学课堂教学

借新课程、新课程标准试行推广之契机,我们教师应领会新课程理念,在数学教学中更好地引导学生,拓展他们的发散思维能力,为他们的探索性、研究性学习插上想象的翅膀,培养他们自己主动扑捉“灵感”的方法。     

Application of regional citrate anticoagulation in patients at high risk of bleeding during intermittent hemodialysis: a prospective multicenter randomized controlled trial

ObjectiveSafe and effective anticoagulation is essential for hemodialysis patients who are at high risk of bleeding. The purpose of this trial is to evaluate the effectiveness and safety of two-stage regional citrate anticoagulation (RCA) combined with sequential anticoagulation and standard calcium-containing dialysate in intermittent hemodialysis (IHD) treatment.MethodsPatients at high risk of bleeding who underwent IHD from September 2019 to May 2021 were prospectively enrolled in 13 blood purification centers of nephrology departments, and were randomly divided into RCA group and saline flushing group. In the RCA group, 0.04 g/mL sodium citrate was infused from the start of the dialysis line during blood draining and at the venous expansion chamber. The sodium citrate was stopped after 3 h of dialysis, which was changed to sequential dialysis without anticoagulant. The hazard ratios for coagulation were according to baseline.ResultsA total of 159 patients and 208 sessions were enrolled, including RCA group (80 patients, 110 sessions) and saline flushing group (79 patients, 98 sessions). The incidence of severe coagulation events of extracorporeal circulation in the RCA group was significantly lower than that in the saline flushing group (3.64% vs. 20.41%, P<0.001). The survival time of the filter pipeline in the RCA group was significantly longer than that in the saline flushing group ((238.34±9.33) min vs. (221.73±34.10) min, P<0.001). The urea clearance index (Kt/V) in the RCA group was similar to that in the saline flushing group with no statistically significant difference (1.12±0.34 vs. 1.08±0.34, P=0.41).ConclusionsCompared with saline flushing, the two-stage RCA combined with a sequential anticoagulation strategy significantly reduced extracorporeal circulation clotting events and prolonged the dialysis time without serious adverse events.     

跨国公司高技术传播的运行机制

本文基于高技术传播的"传播维度"和"有效传播"两个基本分析工具,进一步导出可传播性概念,以此把跨国公司高技术传播的运行机制纳入多层次的复杂性领域,并指出了其典型主导机制,即单纯交换、套利互换和交互创造.     

CEO从军经历可以促进企业社会责任履行吗？——基于中国A股上市公司的经验证据

“军民融合”是重要的国家战略，退役军人的就业创业是军民融合深度发展的重要举措。本文以具有从军经历的CEO（军人CEO）为研究对象，研究了军人CEO是否以及如何影响企业的社会责任承担，并从管理自主权角度考虑其边界条件。基于2009—2020年我国上市公司的数据，进行实证研究。结果表明：CEO从军经历可以促进企业的社会责任承担，股权集中度削弱了两者之间的正向关系，而CEO两职合一、组织冗余则加强了两者之间的正向关系。研究结论有利于理解早期具有从军经历的高管如何影响公司战略决策，为高阶理论、印记理论和企业社会责任理论提供了新的见解，同时对于如何推动企业社会责任承担具有一定的理论和管理意义，也为退役军人就业创业和军民融合提供了重要的实践启示和政策建议。