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煤矿皮带机跑偏故障处理措施分析

能源与节能 2024年第2期 242-245页

作者：闫丽娜晋能控股煤业集团挖金湾虎龙沟煤业有限公司山西怀仁038300

煤矿皮带机是煤矿生产中的重要物料运输设备,然而由于各种原因,煤矿皮带机常常出现跑偏故障,严重影响生产效率和安全性。通过分析煤矿皮带机的跑偏故障,探讨了跑偏故障的原因和特点,并提出了一系列处理措施,包括调整辊道安装、优化皮带... 详细信息

煤矿皮带机是煤矿生产中的重要物料运输设备,然而由于各种原因,煤矿皮带机常常出现跑偏故障,严重影响生产效率和安全性。通过分析煤矿皮带机的跑偏故障,探讨了跑偏故障的原因和特点,并提出了一系列处理措施,包括调整辊道安装、优化皮带材料、改进皮带对中机构等。实践验证,这些处理措施能够有效预防和解决煤矿皮带机的跑偏故障,提高生产效率和安全性。

关键词：煤矿皮带机跑偏故障生产效率安全性

基于AHP-Dematel的学校人事档案信息化管理评价体系研究——以山西省经贸学校的数据为例

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办公自动化 2024年第15期29卷 27-29页

作者：闫丽娜潘仲尼山西省经贸学校太原030006

学校人事档案管理工作繁重,人事档案信息化可以有效提高人事工作效率。文章结合山西省经贸学校实践经验,构建包含信息化组织、信息化应用、信息化协同、信息化安全4个一级指标和14个二级指标的学校人事档案信息化管理评价体系。通过AHP-... 详细信息

学校人事档案管理工作繁重,人事档案信息化可以有效提高人事工作效率。文章结合山西省经贸学校实践经验,构建包含信息化组织、信息化应用、信息化协同、信息化安全4个一级指标和14个二级指标的学校人事档案信息化管理评价体系。通过AHP-Dematel模型,明确了各指标的权重和指标间的相互作用,得出一二级指标综合影响度和总排序。并从明确标准、强化业务、注重学习方面提出提升建议,为学校人事档案信息化管理提供思路。

关键词：人事档案 AHP-Dematel模型信息化应用信息化协同

Radiation Tolerant Viterbi Decoders for On-Board Processing(OBP) in Satellite Communications

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China Communications 2020年第1期17卷 140-150页

作者： Zhen Gao lina yan Jinhua Zhu Ruishi Han Ullah Anees Reviriego Pedro School of Electrical and Information Engineering Tianjin UniversityTianjin 300072China Department of Electrical and Computer Engineering Sir Syed CASE Institute of TechnologyIslamabad 44000Pakistan Universidad Carlos III de Madrid Av.Universidad 30LeganésMadrid 28005Spain

Modern satellite communication systems require on-board processing(OBP)for performance improvements,and SRAM-FPGAs are an attractive option for OBP ***,SRAM-FPGAs are sensitive to radiation effects,among which single event upsets(SEUs)are important as they can lead to data corruption and system *** paper studies the fault tolerance capability of a SRAM-FPGA implemented Viterbi decoder to SEUs on the user *** and fault injection experiments are conducted to verify that over 97%of the SEUs on user memory would not lead to output *** achieve a better reliability,selective protection schemes are then proposed to further improve the reliability of the decoder to SEUs on user memory with very small *** the results are obtained for a specific FPGA implementation,the developed reliability estimation model and the general conclusions still hold for other implementations.

关键词： viterbi decoder on-board processing FPGA user memory fault tolerance single event upsets

听力治疗对老年抑郁患者抗抑郁剂治疗疗效影响的对照研究

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中华灾害救援医学 2024年第3期11卷 256-259页

作者：石磊闫丽娜王伟冰林多朵厦门市仙岳医院/厦门医学院附属仙岳医院/福建省精神医学中心/福建省精神疾病临床医学研究中心厦门361000

目的研究听力治疗与老年抑郁患者抗抑郁剂治疗疗效之间的相关性,探讨听力治疗对提高老年抑郁患者生活质量的重要性。方法选取厦门市仙岳医院及合作的养老机构收治的60例存在听力缺陷的老年抑郁患者为研究对象,在统计患者一般资料后,通... 详细信息

目的研究听力治疗与老年抑郁患者抗抑郁剂治疗疗效之间的相关性,探讨听力治疗对提高老年抑郁患者生活质量的重要性。方法选取厦门市仙岳医院及合作的养老机构收治的60例存在听力缺陷的老年抑郁患者为研究对象,在统计患者一般资料后,通过汉密尔顿抑郁表(HAMD)、汉密尔顿焦虑量表(HAMA)统计患者的抑郁焦虑情况,根据计算机生成的随机数字分组,将患者分为助听器治疗组和无助听器治疗组,对两组患者的相关资料、不同程度听力缺陷之间的差异进行统计分析,根据分析结果判断听力治疗与抗抑郁剂治疗疗效之间的关系。结果比较HAMD、HAMA分值,治疗前两组患者比较差异无统计学意义(P>0.05);治疗后,两组患者的HAMD、HAMA分值均明显低于治疗前(P<0.01);实验组HAMD、HAMA分值较对照组明显降低(P<0.05)其中轻度到中度听力缺陷的患者对听力治疗的获益较中重度听力缺陷的患者更好(P<0.05)。结论听力治疗对存在听力缺陷的老年抑郁患者的抗抑郁治疗有增效作用,具有显著的临床前景。

关键词：老年人群听力缺陷助听器抗抑郁治疗

An Uncertainty Evaluation on the ΔK_(th) and ΔK_(IC) of Fine-grained Isotropic Graphite

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Acta Mechanica Solida Sinica 2024年第3期37卷 478-486页

作者： yantian Zhang lina Zhu Ruiguo yan Xishu Wang Department of Engineering Mechanics Tsinghua UniversityBeijing100084China Wheel-Rail Center Tianjin Research Institute for Advanced EquipmentTsinghua UniversityTianjin300300China

This paper intensively explores the critical issues related to the quantitative and accurate evaluations of FCG behavior in the early stage,macro fatigue fracture toughness,and the critical crack size for damage tolerance in nuclear *** address these issues,scale-span FCG tests were carried out using two typical specimens,CT and SEM in-situ *** results indicate that the FCG threshold and the effective FCG length have a significant correlation with the modified maximum loop stress theory for a mixed I/II *** particular,the effective FCG length(a_(eq))and the applied stress threshold of polycrystalline graphite are important parameters for fatigue damage tolerance design in engineering *** influencing factors of ΔK_(th,eq) and a_(eq) were discussed in detail using the mixed I/II mode,*** addition,the scattered values of ΔK_(IC) for this graphite can be quantitatively estimated using the Weibull distribution *** predicated parameters and experimental results demonstrate a strong correlation.

关键词： Nuclear graphite Mixed I/II mode Fatigue crack Fatigue crack growth threshold Fatigue fracture toughness

The environmental analysis and site selection of mussel and large yellow croaker aquaculture areas based on high resolution remote sensing

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Acta Oceanologica Sinica 2024年第3期43卷 66-86页

作者： lina Cai Jie Yin Xiaojun yan Yongdong Zhou Rong Tang Menghan Yu Marine Science and Technology College Zhejiang Ocean UniversityZhoushan 316022China Zhejiang Marine Fisheries Research Institute Zhejiang Ocean UniversityZhoushan 316004China

Mussel aquaculture and large yellow croaker aquaculture areas and their environmental characteristics in Zhoushan were analyzed using satellite data and in-situ surveys.A new two-step remote sensing method was proposed and applied to determine the basic environmental characteristics of the best mussel and large yellow croaker aquaculture *** methodology includes the first step of extraction of the location distribution and the second step of the extraction of internal environmental *** fishery ranching index(FRI1,FRI2)was established to extract the mussel and the large yellow croaker aquaculture area in Zhoushan,using Gaofen-1(GF-1)and Gaofen-6(GF-6)satellite data with a special resolution of 2 *** the second step,the environmental factors such as sea surface temperature(SST),chlorophyll a(Chl-a)concentration,current and tide,suspended sediment concentration(SSC)in mussel aquaculture area and large yellow croaker aquaculture area were extracted and analyzed in *** results show the following three points.(1)For the extraction of the mussel aquaculture area,FRI1 and FRI2 are complementary,and the combination of FRI1 and FRI2 is suitable to extract the mussel aquaculture *** for the large yellow croaker aquaculture area extraction,FRI2 is suitable.(2)Mussel aquaculture and the large yellow croaker aquaculture area in Zhoushan are mainly located on the side near the islands that are away from the eastern open *** water environment factor template suitable for mussel and large yellow croaker aquaculture was determined.(3)This two-step remote sensing method can be used for the preliminary screening of potential site selection for the mussels and large yellow croaker aquaculture area in the *** fishery ranching index(FRI1,FRI2)in this paper can be applied to extract the mussel and large yellow croaker aquaculture areas in coastal waters around the world.

关键词： mussel aquaculture area large yellow croaker aquaculture area high resolution satellite site selection environmental analysis

World English or Englishes： Which Should We Teach in the Context of China？

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Sino-US English Teaching 2005年第4期2卷 34-39页

作者： lina Cai Xiaoping yan Xinjiang Petroleum Institute

English isthe most respectable language and the most universally read and spoken language in the world. However, with the spread of English there are a lot of ＂varieties＂ of English. When English is referred to as a ＂world＂ language, we frequently hear reference to World Englishes. With the internationalization of English, EIL （English as International Language） is being taught today in a wide diversity of contexts; any sound pedagogy must be informed by a theory of language learning and teaching that is sufficiently complex to account for this diversity. The essay is intended to argue for teaching a certain Standard English, British, American or Australian English in the context of China. The overall purpose of the bilingual users of English, is to use English as a language of wider communication in a global and sometimes also in a local sense, as well as to access the vast amount of information currently available in English, and also to contribute to this knowledge basis.

关键词： World English English context language

山西省运城市居民年住院次数影响因素分析——基于零膨胀及其相关回归模型

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卫生软科学 2024年第1期38卷 64-69页

作者：尹悦吴晓凡王书平娜地达·阿西木闫丽娜中国医师协会北京100071 北京大学第一医院北京100132 新疆石河子大学医学院新疆石河子832003 国家卫生健康委卫生发展研究中心北京100032

[目的]通过拟合居民年住院次数的最优模型,筛选出影响山西省运城市居民年住院次数的主要影响因素。[方法]分别构建负二项回归、Poisson回归、零膨胀负二项回归和零膨胀Poisson回归4种模型,经比较得出最优模型,并据此开展居民年住院次数... 详细信息

[目的]通过拟合居民年住院次数的最优模型,筛选出影响山西省运城市居民年住院次数的主要影响因素。[方法]分别构建负二项回归、Poisson回归、零膨胀负二项回归和零膨胀Poisson回归4种模型,经比较得出最优模型,并据此开展居民年住院次数的影响因素分析。[结果]近一年内0次住院共计4870例(88.18%)。模型分析显示:性别、年龄、文化程度、居住区域、患有慢性病者、家庭年人均收入及常住人口数是居民年住院次数的影响因素(P<0.05);年龄、职业、家庭常住人口数、患有慢性病情况、吸烟、居住区域及健康知识获取途径是居民住院次数出现零膨胀现象的影响因素(P<0.05)。[结论]山西省运城市居民的年住院次数零膨胀负二项回归模型拟合效果最优。家庭年人均收入处于中等水平、患有慢性病人群就医行为较多;年龄偏大、家庭常住人口数为4~6人、城区居住、患有慢性病及经常吸烟的人群的住院潜在需求更大。

关键词：零膨胀模型负二项回归 Poisson回归住院山西运城

Trajectory of COVID-19 response and management strategy in China:scientific rationale driven strategy adjustments

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Frontiers of Medicine 2024年第1期18卷 19-30页

作者： Zeyu Zhang Yue yan lina Zhao Yizhou Bian Ning Zhao You Wu Dahai Zhao Zongjiu Zhang Institute for Hospital Management Tsinghua UniversityBeijing100084China School of Medicine Tsinghua UniversityBeijing100084China School of International and Public Affairs Shanghai Jiao Tong UniversityShanghai200030China Yale University-Shanghai Jiao Tong University Joint Center for Health Policy Shanghai Jiao Tong UniversityShanghai200030China

The pneumonia caused by novel coronavirus SARS-CoV-2 infection in early December 2019,which was later named coronavirus disease 2019(COVID-19)by the World Health Organization(WHO),rapidly spread across the *** has made extraordinary efforts to this unprecedented pandemic,put its response and control at a very high level of infectious disease management(Category B but with measures for Category A),given top priority to the people and their lives,and balanced the pandemic control and socio-economic *** more than three years’fighting against this disease,China downgraded the management of COVID-19 to Category B infectious disease on January 8,2023 and the WHO declared the end of public health emergency on May 5,***,the ending of pandemic does not mean that the disease is no longer a health *** against COVID-19 from China and the whole world should be learned to prepare well for the future public health *** article gives a systematic review of the trajectory of COVID-19 development in China,summarizes the critical policy arrangements and provides evidence for the adjustment during policy making process,so as to share experiences with international community and contribute to the global health for all humanity.

关键词： COVID-19 public health response and control strategy science-based policy making