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What is the Most Effective Method of Error Correction in L2 Writing? 被引量:2
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作者 顾红兵 《海外英语》 2011年第10X期37-39,共3页
The efficacy of error correction and various kinds of correction approaches is one of the key issues in second language writing faced by both teachers and researchers. The current paper reviews the definition of error... The efficacy of error correction and various kinds of correction approaches is one of the key issues in second language writing faced by both teachers and researchers. The current paper reviews the definition of error correction and examines the different views on whether error correction in L2 writing should be corrected. In particular, the paper discusses and analyses the three common correction methods: direct correction, peer feedback and indirect correction. Teachers are encouraged to weigh and analyze the advantages and disadvantages of these methods according to the current literature, employ the most beneficial error correction method in L2 writing, and adapt its suitability to their teaching context. 展开更多
关键词 error CORRECTION L2 WRITING effective method
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Effect of Modulation Error on All Optical Fiber Current Transformers 被引量:3
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作者 Zhengping Wang Yuekun Wang Shuai Sun 《Journal of Sensor Technology》 2012年第4期172-176,共5页
For actively modulated In-line Sagnac interferential all optic fiber current transformers (AOFCTs), the accuracies are directly affected by the amplitude of the modulation signal. In order to deeply undertand the func... For actively modulated In-line Sagnac interferential all optic fiber current transformers (AOFCTs), the accuracies are directly affected by the amplitude of the modulation signal. In order to deeply undertand the function of the modulator, a theoretical model of modulation effect to AOFCTs is built up in this paper. The effect of the amplitude of the modulation signal to the output intensity of AOFCTs is theoretically formulated and numerical calculated. The results show that the modulation voltage variation could affect the output accuracies significantly. This might be some references on the investigation for practical applications of AOFCTs. 展开更多
关键词 Electronic CURRENT TRANSFORMER All Optical FIBER CURRENT TRANSFORMER Faraday effect Active MODULATION MODULATION error
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ADC border effect and suppression of quantization error in the digital dynamic measurement 被引量:3
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作者 白丽娜 刘海东 +7 位作者 周渭 张勇 翟鸿启 崔震健 赵明英 谷小倩 刘蓓玲 黄李贝 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第9期91-97,共7页
The digital measurement and processing is an important direction in the measurement and control field. The quantization error widely existing in the digital processing is always the decisive factor that restricts the ... The digital measurement and processing is an important direction in the measurement and control field. The quantization error widely existing in the digital processing is always the decisive factor that restricts the development and applications of the digital technology. In this paper, we find that the stability of the digital quantization system is obviously better than the quantization resolution. The application of a border effect in the digital quantization can greatly improve the accuracy of digital processing. Its effective precision has nothing to do with the number of quantization bits, which is only related to the stability of the quantization system. The high precision measurement results obtained in the low level quantization system with high sampling rate have an important application value for the progress in the digital measurement and processing field. 展开更多
关键词 quantization error border effect digital converter(ADC)
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Practice and Effect of Appropriate Error-correction in English Teaching 被引量:2
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作者 任静明 胡蓉 《Journal of Donghua University(English Edition)》 EI CAS 2002年第2期140-142,共3页
This paper points out that with interference from their native language and culture, Chinese students will inevitably make some errors in the process of learning English. It is important for teachers to know when and ... This paper points out that with interference from their native language and culture, Chinese students will inevitably make some errors in the process of learning English. It is important for teachers to know when and how to correct the students’ errors. By employing error-correction skillfully and appropriately, one can expect to improve the present English teaching and learning, to develop the self-confidence and self-esteem in students themselves. 展开更多
关键词 error-correction practice effect
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Introduction of New Method on Engineering Risk Assessment:Engineering Errors and Effects Analysis(3EA)
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作者 Mohammad Mahdi Izadi 《Management Studies》 2018年第6期527-530,共4页
Construction and commissioning accidents investigation shows that engineer’s errors in basic and detailed phases are the main causes.It will be gained more efficiency of investment when a relevant method is applied f... Construction and commissioning accidents investigation shows that engineer’s errors in basic and detailed phases are the main causes.It will be gained more efficiency of investment when a relevant method is applied for error identification and risk assessment in basic and detailed phases.Most of risk assessment methods are related to construction phase,meanwhile hidden risks that were happen in previous phases cannot be found by these methods.Although HAZOP study can be applied in detail phase but it can help to find process defections.Importance of identifying risks in basic and detailed phases is to apply preventive actions against birth and grows risks.This risk assessment method can reduce costs and improve environmental protection,safety,and reliability of designs.The main purpose of this study is to identify engineer’s errors and analyse their HSE effects.The method is applied in seven oil and gas engineering projects in Iran,raising the level of engineer’s attention to safety precautions and environmentally-friendly design,reducing the cost of improving the level of safety and environmental protection,improving environmental protection,safety,and design reliability,and improving procedures related to design process and control have been achieved. 展开更多
关键词 ENGINEERING errorS and effectS Analysis(3EA) ENGINEERING error detailed effectIVENESS control risk assessment
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Warburg effect mimicking inborn errors of metabolism in childhood hematologic malignancies:A case-based systematic review
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作者 Khanittha Permtawee Maliwan Tengsujaritkul +5 位作者 Chane Choed-Amphai Supapitch Chanthong Kanittha Mankhemthong Lalita Sathitsamitphong Rungrote Natesirinilkul Pimlak Charoenkwan 《World Journal of Clinical Pediatrics》 2023年第5期350-358,共9页
BACKGROUND Type B lactic acidosis and hypoglycemia can occur in various pediatric conditions.In young children with a history of fasting preceding these metabolic derangements,inborn errors of metabolism should be pri... BACKGROUND Type B lactic acidosis and hypoglycemia can occur in various pediatric conditions.In young children with a history of fasting preceding these metabolic derangements,inborn errors of metabolism should be primarily considered.However,the Warburg effect,a rare metabolic complication,can also manifest in children with hematologic malignancies.Only a few reports of this condition in children have been published in the literature.AIM To identify the clinical course,treatment strategies,and outcomes of childhood hematologic malignancies with type B lactic acidosis.METHODS We performed a comprehensive search of the PubMed,Scopus,and Cochrane databases without any time restriction but limited to English language articles.The databases were last accessed on July 1st,2023.RESULTS A total of 20 publications were included in the analysis,all of which were case reports or case series.No higher quality evidence was available.Among children with hematologic malignancies and Warburg effect,there were 14 cases of acute lymphoblastic leukemia and 6 cases of non-Hodgkin’s lymphoma including our illustrative case.Lactic acidosis occurred in 55%of newly diagnosed cases and 45%of relapsed cases.The mean age was 10.3±4.5 years,and 80%of cases were male.The mean serum lactate was 16.9±12.6 mmol/L,and 43.8%of the cases had concomitant hypoglycemia.Lactic acidosis initially subsided in 80%of patients receiving chemotherapy compared to 60%in the contrast group.The mortality rate of newly diagnosed cases was 45.5%,while the relapsed cases represented a 100%mortality rate.All 8 patients reported before 2001 died from disease-related complications.However,patients described in reports published between 2003 and 2023 had a 54.5%rate of complete remission.CONCLUSION This complication has historically led to fatal outcome;however,patients who received chemotherapy showed a more favorable response.Therefore,it is crucial to promptly initiate specific treatment in this context. 展开更多
关键词 Warburg effect Lactic acidosis type B Inborn errors of metabolism LEUKEMIA LYMPHOMA CHILDREN
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Effect of Healthcare Failure Mode and Effect Analysis on Reducing Error Risk of Neonatal Parenteral Nutrition Solution Dispensing
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作者 Xinhong ZHAO Zhenhua LIU +3 位作者 Chao SUN Xu XIAO Lixue ZHAO Chunhua CAI 《Medicinal Plant》 CAS 2022年第2期63-69,共7页
[Objectives]To investigate the effect of healthcare failure mode and effect analysis(HFMEA)on reducing error risk of neonatal parenteral nutrition solution dispensing.[Methods]A research team was established to identi... [Objectives]To investigate the effect of healthcare failure mode and effect analysis(HFMEA)on reducing error risk of neonatal parenteral nutrition solution dispensing.[Methods]A research team was established to identify the failure mode(FM)in each link of the formulation process of neonatal parenteral nutrition solution by HFMEA,quantify the severity(S),occurrence(O)and detection(D)of FM,and evaluate FM by risk priority number(RPN).For FM with the values of RPN>16,failure cause analysis was conducted,and corresponding improvement measures were formulated.The weight coefficient and random consistency ratio(CR)of deployment process were calculated in Matlab R2018a by compiling the Analytic Hierarchy Process(AHP)program.Six months after the implementation of improvement measures,the implementation effect was evaluated by comparing the changes of the values of RPN which was evaluated comprehensively and the rate of dispensing errors before and after the implementation of HFMEA.[Results]In the preparation process of neonatal parenteral nutrition solution,a total of 13 FMs with medium and above risk were found,the weight coefficient of medical order review,dosing and mixing was 0.2703,the weight coefficient of drug dispensing check and review was 0.1432,the weight coefficient of print label was 0.1015,the weight coefficient of distribution was 0.0716,and CR=0.0491<0.1.After six months of intervention,the total RPN value decreased by 64.81%from 127.8 to 45.0.The deployment error rates were significantly lower after the implementation,and the difference was statistically significant(P<0.05).[Conclusions]HFMEA can effectively reduce the error risk in preparation of neonatal parenteral nutrition solution,improve the quality of dispensing and promote the safety of neonatal medication. 展开更多
关键词 Healthcare failure mode and effect analysis(HFMEA) Neonatal parenteral nutrition solution Dispensing errors Risk management Analytic hierarchy process(AHP)
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Error Analysis of CET-4 Translation Produced by Vocational & Techni⁃ cal College Students and the Backwash Effect of English Teaching
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作者 马理明 《海外英语》 2020年第24期150-151,共2页
CET-4 is a national standardized English proficiency test designed and developed by the National College English Ex⁃amination Committee.The purpose of the test is to accurately measure the comprehensive English applic... CET-4 is a national standardized English proficiency test designed and developed by the National College English Ex⁃amination Committee.The purpose of the test is to accurately measure the comprehensive English application ability of college stu⁃dents in China.The more important the test,the more obvious its backwash effect.With the increase of the proportion of subjective questions in CET-4,teachers should pay more attention to the transfer of skills and correct English expression while teaching the basic knowledge of English.In particular,the students in vocational and technical colleges are weak in English abilities,and their errors in translation are even more numerous and varied.Therefore,this study will analyze the translation errors produced by 200 vocational and technical college students in CET-4 of June 2019.By interviewing and investigating the students’actual situation of English learning,tips and proposals on backwash effect on teaching can be achieved. 展开更多
关键词 vocational&technical college students CET-4 translation error analysis backwash effect on teaching
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Effectiveness and failure modes of error correcting code in industrial 65 nm CMOS SRAMs exposed to heavy ions
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作者 童腾 王晓辉 +4 位作者 张战刚 丁朋程 刘杰 刘天奇 苏弘 《Nuclear Science and Techniques》 SCIE CAS CSCD 2014年第1期47-52,共6页
Single event upsets(SEUs) induced by heavy ions were observed in 65 nm SRAMs to quantitatively evaluate the applicability and effectiveness of single-bit error correcting code(ECC) utilizing Hamming Code.The results s... Single event upsets(SEUs) induced by heavy ions were observed in 65 nm SRAMs to quantitatively evaluate the applicability and effectiveness of single-bit error correcting code(ECC) utilizing Hamming Code.The results show that the ECC did improve the performance dramatically,with the SEU cross sections of SRAMs with ECC being at the order of 10^(-11) cm^2/bit,two orders of magnitude higher than that without ECC(at the order of 10^(-9) cm^2/bit).Also,ineffectiveness of ECC module,including 1-,2- and 3-bits errors in single word(not Multiple Bit Upsets),was detected.The ECC modules in SRAMs utilizing(12,8) Hamming code would lose work when 2-bits upset accumulates in one codeword.Finally,the probabilities of failure modes involving 1-,2- and 3-bits errors,were calcaulated at 39.39%,37.88%and 22.73%,respectively,which agree well with the experimental results. 展开更多
关键词 SRAM 重离子 CMOS 故障模式 纳米 纠错码 工业 ECC
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医疗失效模式与效应分析法对门急诊处方差错的影响 被引量:1
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作者 刘婧娜 姜秀国 谢桂红 《中国当代医药》 2025年第15期149-153,共5页
目的分析医疗失效模式与效应分析(HFMEA)法降低门急诊处方差错的效果。方法选取北京市顺义区医院HFMEA法实施前(2024年1—6月,纳入对照组)的1583份门急诊处方及HFMEA法实施后(2024年7—12月,纳入观察组)的1721份门急诊处方进行调查,比... 目的分析医疗失效模式与效应分析(HFMEA)法降低门急诊处方差错的效果。方法选取北京市顺义区医院HFMEA法实施前(2024年1—6月,纳入对照组)的1583份门急诊处方及HFMEA法实施后(2024年7—12月,纳入观察组)的1721份门急诊处方进行调查,比较两组处方差错率、处方调配差错发生情况以及医务人员用药知识水平、医务人员用药安全意识评分。结果观察组的门急诊处方差错率低于对照组,差异有统计学意义(P<0.05)。观察组的门急诊拿错相邻药品、拿错药名外观相似药品、拿错剂型、拿错规格、拿错同成分不同厂家药品总发生率低于对照组,差异有统计学意义(P<0.05)。观察组的医务人员用药知识水平测试药物选择与适应证、剂量计算、给药途径、药物相互作用、不良反应识别上报与处理评分均高于对照组,差异有统计学意义(P<0.05);观察组的医务人员用药安全意识测试风险识别、预防措施理解、主动参与、安全文化认同、反馈与改进评分均高于对照组,差异有统计学意义(P<0.05)。结论应用HFMEA法可显著降低门急诊处方差错率,减少处方调配错误,提升医务人员的用药知识水平和用药安全意识。 展开更多
关键词 医疗失效模式与效应分析法 门急诊 风险评估 处方差错
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审计师第二类重述错误经历对审计调整的影响
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作者 周楷唐 汤依依 《审计与经济研究》 北大核心 2025年第1期24-34,共11页
运用我国独特的审计调整数据,研究了审计师第二类重述错误经历(审计师出具标准无保留意见的财务报表后续被重述)对审计调整的影响。实证结果发现,相较于未经历过第二类重述错误的审计师,经历过此类错误的审计师在后续的审计中进行审计... 运用我国独特的审计调整数据,研究了审计师第二类重述错误经历(审计师出具标准无保留意见的财务报表后续被重述)对审计调整的影响。实证结果发现,相较于未经历过第二类重述错误的审计师,经历过此类错误的审计师在后续的审计中进行审计调整的可能性更高。机制检验发现,当审计师经历第二类重述错误时的审计客户重要性越高、客户流失越多、具有行业专长以及存在同行业知识迁移时,审计师的第二类重述错误经历对审计调整影响越显著,表明此类错误经历可以通过声誉效应与学习效应两个渠道影响审计调整。进一步研究发现,经历过第二类重述错误的审计师比其他审计师进行更大的负向与正向审计调整幅度,并且审计质量更高;当审计师多次经历此类错误时,其进行审计调整的可能性更大;当客户对于高质量审计的需求较弱时,结论仍然成立。 展开更多
关键词 第二类重述错误经历 审计调整 审计师行为 审计质量 声誉效应 学习效应
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容错纠错机制与国有企业创新质量
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作者 杜金岷 周湛杰 曾林 《产经评论》 北大核心 2025年第2期40-62,共23页
创新对促进我国科技水平不断提升、推动经济高质量发展具有重要影响,而国有企业在创新中扮演关键角色,促进国有企业创新是国有企业改革的应有之意。以国有企业容错纠错机制建立为准自然实验,构建交错双重差分模型考察激励与治理改革对... 创新对促进我国科技水平不断提升、推动经济高质量发展具有重要影响,而国有企业在创新中扮演关键角色,促进国有企业创新是国有企业改革的应有之意。以国有企业容错纠错机制建立为准自然实验,构建交错双重差分模型考察激励与治理改革对国有企业创新质量的影响。结果显示:容错纠错机制的实施显著提升了国有企业创新质量。机制检验表明,容错纠错机制兼具激励和治理效应,通过缓解管理层短视和改善公司治理水平促进国有企业创新质量提升。异质性分析发现,容错纠错机制对国有企业创新质量的促进作用在风险承担水平较低、股权激励水平较低、机构投资者持股比例较高以及控制链条较长的国有企业中更为明显。因此,应深化国有企业改革,实施容错纠错机制,激发国有企业科技创新动力,释放国有企业创新潜力,实现高水平科技自立自强。 展开更多
关键词 容错纠错机制 国有企业改革 创新质量 激励效应 治理效应
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极端次序统计量在均匀分布统计推断中的应用
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作者 姜培华 刘文震 张小敏 《高师理科学刊》 2025年第6期100-107,共8页
参数估计是概率统计中的一个重要内容,也是研究生入学考试高等数学科目中的一个重要考点。受2024年研究生入学考试高等数学试卷中一道考题的启发,对此题进行拓展和深化,系统研究了均匀分布总体下基于极端次序统计量如何来构造参数的点估... 参数估计是概率统计中的一个重要内容,也是研究生入学考试高等数学科目中的一个重要考点。受2024年研究生入学考试高等数学试卷中一道考题的启发,对此题进行拓展和深化,系统研究了均匀分布总体下基于极端次序统计量如何来构造参数的点估计,并讨论了不同估计量的有效性以及在均方误差意义下的最优估计问题。所用的处理方法和技巧,对于培养学生的发散思维,提高学生的创新能力是非常有益的。 展开更多
关键词 最大次序统计量 最小次序统计量 点估计 有效性 均方误差.
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基于失效模式与效应分析法的PIVAS差错原因分析及流程改进
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作者 黄艳 李灵琦 《农垦医学》 2025年第4期328-333,共6页
目的:运用医疗失效模式与效应分析(Failure Mode and Effect Analysis,FMEA)技术提出针对性的改进方案,以减少静脉配置中心(Pharmacy Intravenous Admixture Service,PIVAS)在药物配制过程中的误差,从而增强药物使用的安全性。方法:调... 目的:运用医疗失效模式与效应分析(Failure Mode and Effect Analysis,FMEA)技术提出针对性的改进方案,以减少静脉配置中心(Pharmacy Intravenous Admixture Service,PIVAS)在药物配制过程中的误差,从而增强药物使用的安全性。方法:调取某院2021年下半年的静脉配置中心调配处方,采用Pareto图分析差错原因,采用FMEA评估药物配制流程,计算风险优先指数(Risk Priority Number,RPN)并找出潜在失效模式,结合鱼骨根因分析,制定并实施整改计划。对比改善前后的RPN值、盘亏比、输液配制时间等评价改善后的效果。结果:通过Pareto图找出药物配制过程中剂量计算错误、配制顺序错误、排药错误等5个类型。并采用FMEA流程风险评估,找出排药过程、配制过程及药品准备过程中存在的10个风险点。针对其中RPN值较高的8个中高风险点进行整改。改进后降至3个中风险点,RPN值下降99,降幅为57.9%。2023年比2021年同期配制量增长的情况下,普通输液、抗肿瘤药物和营养液配制时长均缩短,盘亏比持续下降。结论:通过Pareto图将FMEA用于PIVAS差错分析和流程改进,显著降低了药物配制过程中的风险值,有利于保障用药安全性。 展开更多
关键词 失效模式与效应分析 药物配制 差错 静配中心
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高等教育与经济增长的影响机制研究
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作者 傅书勇 翟金龙 孙淑军 《科技和产业》 2025年第14期255-260,共6页
旨在研究高等教育对经济增长作用机制。基于2010—2021年中国30个省份(因数据缺失,为包含西藏地区和港澳台地区)面板数据,首先利用中介效应探究技术创新在高等教育影响机制中的作用,其次利用空间误差模型对高等教育与经济增长之间关系... 旨在研究高等教育对经济增长作用机制。基于2010—2021年中国30个省份(因数据缺失,为包含西藏地区和港澳台地区)面板数据,首先利用中介效应探究技术创新在高等教育影响机制中的作用,其次利用空间误差模型对高等教育与经济增长之间关系进行实证分析。结果表明,中介效应检验中各变量均通过显著性检验;空间视角上,技术创新对经济增长的作用存在区域差异。因此,技术创新的中介效应是高等教育对经济增长的作用路径。 展开更多
关键词 高等教育 经济增长 技术创新 中介效应 空间误差模型
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考虑时空效应的杭州软黏土超深基坑地表沉降分析方法 被引量:6
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作者 熊一帆 应宏伟 +2 位作者 张金红 程康 李冰河 《上海交通大学学报》 北大核心 2025年第1期48-59,共12页
利用PLAXIS 3D软件和软土蠕变模型,建立杭州中心项目超深基坑群B2基坑的三维数值模型,深入分析了时空因素对坑外地表沉降的影响.引入互补误差函数和三折线模型,利用数值结果对既有互补误差函数进行修正,提出了考虑时空效应的地表沉降快... 利用PLAXIS 3D软件和软土蠕变模型,建立杭州中心项目超深基坑群B2基坑的三维数值模型,深入分析了时空因素对坑外地表沉降的影响.引入互补误差函数和三折线模型,利用数值结果对既有互补误差函数进行修正,提出了考虑时空效应的地表沉降快速分析方法.结果表明:软黏土蠕变既诱发围护墙的附加侧移从而引起土体沉降,又诱发坑外土体产生不依赖于围护墙侧移的沉降;忽略软土蠕变对预测超深基坑坑外地表沉降的影响不弱于其对墙体侧移的影响;基坑深度和开挖速率相同时,开挖面积直接决定施工时间的长短,从而影响软黏土蠕变诱发的地表沉降. 展开更多
关键词 软黏土 超深基坑 地表沉降 时空效应 互补误差函数
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不同进给速度对机床误差补偿效果影响的研究 被引量:1
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作者 周群龙 刘焕牢 +1 位作者 张传景 王宇林 《航空制造技术》 北大核心 2025年第5期107-113,共7页
针对进给速度影响机床误差的现象,研究了数控机床在误差补偿下进给速度对补偿效果的影响。以数控机床X、Y工作平面为例,首先通过激光干涉仪测量X、Y两轴定位误差并进行补偿;其次控制机床X、Y两轴以不同进给速度联动进行圆轨迹运动,并使... 针对进给速度影响机床误差的现象,研究了数控机床在误差补偿下进给速度对补偿效果的影响。以数控机床X、Y工作平面为例,首先通过激光干涉仪测量X、Y两轴定位误差并进行补偿;其次控制机床X、Y两轴以不同进给速度联动进行圆轨迹运动,并使用球杆仪测量圆轨迹轮廓误差。结果表明,数控机床的轮廓误差随着进给速度的增大而增大,验证了轮廓误差与进给速度平方成正比关系。同时通过比较静止状态与不同进给速度下的误差补偿效果,发现后者补偿效果较差,仅将圆度误差降低了26.6%,说明进给速度严重影响了误差补偿效果。因此在对机床进行误差补偿时考虑进给速度的影响,更能反映机床实际误差,提高补偿效果,为机床综合误差建模提供一定的理论依据。 展开更多
关键词 补偿效果 球杆仪 进给速度 机床误差补偿 轮廓误差
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差错管理氛围在护士长多元领导风格与护士安全行为间的中介作用
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作者 柯喻 金静芬 +3 位作者 张玉萍 姚梅琪 华婧 张若林 《中国护理管理》 北大核心 2025年第9期1400-1404,共5页
目的:了解ICU护士安全行为现状,并探讨差错管理氛围在护士长多元领导风格与ICU护士安全行为间的中介作用,为护理管理实践提供参考。方法:采用一般资料调查表、护士长多元领导风格量表、差错管理氛围量表和护士安全行为量表,便利选取446... 目的:了解ICU护士安全行为现状,并探讨差错管理氛围在护士长多元领导风格与ICU护士安全行为间的中介作用,为护理管理实践提供参考。方法:采用一般资料调查表、护士长多元领导风格量表、差错管理氛围量表和护士安全行为量表,便利选取446名ICU护士进行调查,并进行中介效应分析。结果:ICU护士安全行为总分为(52.60±5.28)分。中介效应检验表明,差错管理氛围在护士长多元领导风格与ICU护士安全行为间具有中介效应(β=0.37,P<0.05),占总效应的63.79%。结论:ICU护士安全行为处于中等偏上水平,差错管理氛围在其中发挥部分中介效应,护士长实行多元领导风格,增强团队对差错感知的氛围,减轻护士对差错感知的压力,二者共同作用可提高ICU护士安全行为。 展开更多
关键词 多元领导风格 差错管理 患者安全 中介效应
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ZnS窗口激光防护/中红外增透膜光热仿真
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作者 曹袁睿 王利栓 +3 位作者 刘华松 杨仕琪 孙鹏 钮信尚 《红外与激光工程》 北大核心 2025年第5期304-313,共10页
激光技术的发展给飞行器红外光学系统带来极大挑战,而光学窗口是红外光学系统抗激光损伤的最薄弱环节。文中针对ZnS光学窗口设计了多层薄膜结构,使其在提高3~5μm波段光学透过率的同时,具备对1.06μm激光的防护能力。首先,构建了激光作... 激光技术的发展给飞行器红外光学系统带来极大挑战,而光学窗口是红外光学系统抗激光损伤的最薄弱环节。文中针对ZnS光学窗口设计了多层薄膜结构,使其在提高3~5μm波段光学透过率的同时,具备对1.06μm激光的防护能力。首先,构建了激光作用多层膜的光热响应模型,并通过仿真计算获得了膜层厚度、折射率和消光系数等参数对光学窗口薄膜的光学性能和热效应的影响关系。研究结果表明,以HfO2/SiO2作为多层膜基本膜堆,当最外三层薄膜物理厚度误差在-3.3%~3.3%范围时,膜基界面温度变化最大为27℃,1.06μm波长处反射率和3~5μm波段内平均透过率变化均小于1‰,对多层膜光热性能影响较小;当两种膜层材料的折射率差值增大时,膜层内部电场的变化影响了薄膜的吸收率,使膜基界面温度呈现出先降低后升高的现象;多层膜的膜基界面温度随膜层材料消光系数提高而升高,且低折射率材料对激光热效应的影响权重更大。研究结果可以为激光防护/中红外增透多层膜的抗激光损伤设计和制备提供参考。 展开更多
关键词 激光热效应 有限元分析 多层膜 折射率 厚度误差
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基于根本原因分析的管理模式在医院检验科中的管理效果及对差错率的影响 被引量:1
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作者 刘凤 李霞 吕丽云 《中国卫生产业》 2025年第5期120-123,共4页
目的探讨基于根本原因分析的管理模式在医院检验科中的管理效果及对差错率的影响。方法选择2022年6月—2024年5月泰安市宁阳县华丰镇卫生院、山东省聊城市高唐县中医院及山东省泰安东平县人民医院检验科医师12名为研究对象。2022年6月—... 目的探讨基于根本原因分析的管理模式在医院检验科中的管理效果及对差错率的影响。方法选择2022年6月—2024年5月泰安市宁阳县华丰镇卫生院、山东省聊城市高唐县中医院及山东省泰安东平县人民医院检验科医师12名为研究对象。2022年6月—2023年5月采用常规方法管理,收集检验标本783份,设为对照组;2023年6月—2024年5月联合基于根本原因分析的管理模式,收集检验标本792份,设为观察组。比较两组管理质量、标本检验差错率与管理满意度。结果观察组管理质量评分高于对照组,差异均有统计学意义(P均<0.05)。观察组标本检验差错率为0.63%(5/792),低于对照组的1.79%(14/783),差异有统计学意义(χ^(2)=4.420,P<0.05)。观察组管理满意度高于对照组。结论基于根本原因分析的管理模式用于医院检验科医师管理中效果良好,管理质量和满意度较高,能降低标本检验差错率。 展开更多
关键词 根本原因分析 管理模式 检验科 管理效果 差错率 管理满意度
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