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以职业需求为导向的成人高等教育英语教学改革研究

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黑龙江教师发展学院学报 2024年第7期43卷 70-72页

作者：唐晓丽孙一铭黑龙江教师发展学院哈尔滨150080 鲁迅美术学院继续教育学院沈阳110004

随着经济全球化和国际化的发展,英语已经成为全球交流的通用语言,成为了人们沟通、交流的桥梁。在此背景下,成人高等教育英语教学的重要性日益凸显。职业需求成为了成人高等教育英语教学改革的重要方向。基于此,以职业需求为导向,探讨... 详细信息

随着经济全球化和国际化的发展,英语已经成为全球交流的通用语言,成为了人们沟通、交流的桥梁。在此背景下,成人高等教育英语教学的重要性日益凸显。职业需求成为了成人高等教育英语教学改革的重要方向。基于此,以职业需求为导向,探讨成人高等教育英语教学的现状和面临的困境,并提出相应的改革建议。通过深入的剖析,认为职业需求导向是成人高等教育英语教学改革的必然趋势,必须增强教学内容的实用性和针对性,提高学生的职业素养和能力,使英语教学更加贴近职业需求,以满足现代社会对英语人才的需求。

关键词：职业需求导向成人高等教育教学改革教学内容教学方法

3D打印技术在舰船管系三维建模设计中的应用

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舰船科学技术 2024年第6期46卷 165-168页

作者：王晓橹沈阳理工大学辽宁沈阳110158

为提升复杂结构舰船管系的设计灵活性,研究3D打印技术在舰船管系三维建模设计中的应用。利用CAD软件建立舰船管系的二维模型,依据舰船管系三角面片的交线段,确定舰船管系的点、线、面关系,将其转换为舰船管系三维模型。将舰船管系三维模... 详细信息

为提升复杂结构舰船管系的设计灵活性,研究3D打印技术在舰船管系三维建模设计中的应用。利用CAD软件建立舰船管系的二维模型,依据舰船管系三角面片的交线段,确定舰船管系的点、线、面关系,将其转换为舰船管系三维模型。将舰船管系三维模型,导入切片软件中,利用切片引擎运行3D打印切片引擎增强处理算法,切片处理舰船管系三维模型,输出舰船管系三维模型的Gcode代码文件。将Gcode代码导入3D打印机,采用Z字填充法填充舰船管系3D打印材料,实现舰船管系模型的3D打印。实验结果表明,该方法可以精准打印舰船管系三维模型,打印结果的尺寸偏差小,提升了舰船管系设计的灵活性。

关键词： 3D打印技术舰船管系三维建模设计三角面片切片引擎 Z字填充法

Evolution of helium bubbles in FeCoNiCr-based high-entropy alloys containing γ′ nanoprecipitates

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Chinese Physics B 2024年第7期33卷 491-500页

作者：冯婷蒋胜明胡潇天张子骏黄子敬董士刚张建 College of Energy Xiamen UniversityXiamen 361005China16

A series of high-entropy alloys(HEAs) containing nanoprecipitates of varying sizes is successfully prepared by a non-consuming vacuum arc melting *** order to study the irradiation evolution of helium bubbles in the FeCoNiCrbased HE As with γ' precipitates,these samples are irradiated by 100-keV helium ions with a fluence of 5 × 10^(20) ions/m^(2) at 293 K and 673 K,*** the samples irradiated at room temperature are annealed at different temperatures to examine the diffusion behavior of helium *** electron microscope(TEM) is employed to characterize the structural morphology of precipitated nanoparticles and the evolution of helium *** results reveal that nanosized,spherical,dispersed,coherent,and ordered L1_(2)-type Ni_(3)Ti γ' precipitations are introduced into FeCoNiCr(Ni_(3)Ti)_(0.1) HEAs by means of ageing treatments at temperatures between 1073 K and 1123 *** the ageing treatment conditions adopted in this work,γ' nanoparticles are precipitated in FeCoNiCr(Ni_(3)Ti)_(0.1) HE As,with average diameters of 15.80 nm,37.09 nm,and 62.50 nm,*** average sizes of helium bubbles observed in samples after 673-K irradiation are 1.46 nm,1.65 nm,and 1.58 nm,*** improvement in the irradiation resistance of FeCoNiCr(Ni_(3)Ti)_(0.1) HEAs is evidenced by the diminution in bubbles ***,the FeCoNiCr(Ni_(3)Ti)_(0.1) HEAs containing γ' precipitates of 15.8 nm exhibits the minimum size and density of helium bubbles,which can be ascribed to the considerable helium trapping effects of heterogeneous coherent phase ***,annealing experiments conducted after 293-K irradiation indicate that HEAs containing precipitated phases exhibits smaller apparent activation energy(E_(a)) for helium bubbles,resulting in larger helium bubble *** study provides guidance for improving the irradiation resistance of L1_(2)-strengthened high-entropy alloy.

关键词： high-entropy alloys irradiation resistance coherent precipitates helium bubbles

Mechanism of water savings and pollution reduction in paddy fields of three typical areas in southern China

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International Journal of Agricultural and Biological Engineering 2022年第1期15卷 199-207页

作者： Menghua xiao Yuanyuan Li yi Jia Jianwen Wang Zhejiang Institute of Hydraulics and Estuary(Zhejiang Institute of Marine Planning and Design) Hangzhou 310020China North China University of Water Resource and Electric Power Zhengzhou 450045China Zhejiang Rural Water Conservancy Management Center Hangzhou 310009China Qiantang River Irrigation Area Management Center Xiaoshan DistrictHangzhou CityHangzhou 311200China

Field irrigation and drainage regulation and fertilization application could affect water utilization and pollution transportation in a paddy *** this study,representative rice-producing areas of Zhejiang Province in southern China were selected to study the effects of different field water level control(conventional irrigation and drainage W0,controlled irrigation and drainage W1 and W2)and different fertilization methods(2 times of fertilization F2 and three times of fertilization F3)on water irrigation quantity and consumption of rice,rice growth,water utilization,and pollution *** showed that field water level control had a great effect on irrigation quota in growing period rather than that in soaking period,and irrigation quota for W0 was 37.0%-71.7%higher than that for W1 and W2 in the whole growth period of *** the upper limit of rain storage was greatly increased by W1 and W2,on the contrary,the yield under W1 and W2 was 0.4%-2.1%higher than that under *** consumption,water leakage,and evapotranspiration were 16.63%-34.4%,39.97%-60.8%,and 9.40%-31.53%lower under W1 and W2 than those under W0,respectively,while it showed no significant changes under W1 and *** use rate and WUEI(water use efficiency of irrigation)under W1 and W2 had been significantly improved by 8.20%-129.58%and 31.58%-201.61%compared to *** contribution of nitrogen and phosphorus loss from surface water accounted for 90%and the total pollution load of total nitrogen(TN),NO_(3)^(-)-N,NH_(4)^(+)-N and chemical oxygen demand(COD)were 20.0%-63.4%,21.8%-66.3%,21.5%-63.8%,and 21.4%-46.5%lower for W1 and W2 than that for W0,***,compared to F2,dispersed fertilization(F3)was beneficial to increase the yield and decrease pollutant ***,the path of IRA→NH_(4)^(+)-N→COD and IRA→WCA→WUE_(I) presented partial remediation effect,and the effect size was 23.6%and 38.1%,respectively,the path of IRA→WUE_(I)→WUE_(ET) presented a full r

关键词： controlled irrigation and drainage water consumption water use efficiency non-point source pollution structural equation mode

Influence of previous laparoscopic surgical and pathological diagnosis of endometriosis on pregnancy outcomes in women with adenomyosis

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Gynecology and Obstetrics Clinical Medicine 2022年第3期2卷 147-150页

作者： Zhao Tian Jin Lai Qing-Jie Zhai yi Li Yue Wang xiao-hong Chang hong-Lan Zhu Heng Cui Department of Obstetrics and Gynecology Peking UniversityPeople's HospitalBeijing100044China

Objectives:Previous studies demonstrated that endometriosis and adenomyosis are closely linked to lots of adverse pregnancy outcomes while the role of endometriosis in pregnant women with adenomyosis has not been explored *** present study aimed to evaluate the influence of previous laparoscopic surgical and pathological diagnosis of endometriosis on pregnancy outcomes in women with ***:A total of 60 pregnant women who were diagnosed with adenomyosis before or during pregnancy were included in this *** them,8 were also diagnosed with endometriosis by previous laparoscopic *** demographic characteristics and pregnancy outcomes were compared between women with adenomyosis only and those with the surgical history of ***:Compared with women with adenomyosis only,those concomitant with the surgical history of endometriosis had significantly higher age at delivery[37.5(36.25–39.75)vs.35(33.25–37),P=0.016]and an increased risk of postpartum hemorrhage(PPH)(adjusted OR:5.992,95%CI:1.03–34.857,P=0.046)while no significant differences were found in other adverse pregnancy outcomes between these two *** we further detected the risk factor of PPH in women with adenomyosis and found that the surgical history of endometriosis(OR:6.995,95%CI:1.16–42.171,P=0.034)and assisted reproductive technology(ART)(OR:5.062,95%CI:1.494–17.146,P=0.009)were the parameters closely associated with the occurrence of ***:The history of previous laparoscopic surgical and pathological diagnosis of endometriosis in pregnant women with adenomyosis may increase the risk of PPH,which still needs to be verified by future studies with a large sample ***,pregnancy through ART is also an increased risk factor for PPH in women with *** women with adenomyosis who conceived with the surgical history of endometriosis or by ART should be closely monitored for the reason of being at high risk of PPH.

关键词： Adenomyosis Endometriosis Adverse pregnancy outcomes Assisted reproductive technology

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岩溶区桥梁沉降的加固和预防

公路 2024年第7期69卷 320-325页

作者：肖震马涛中交第二公路勘察设计研究院有限公司武汉市430056

在高速公路改扩建项目中,桥梁加宽由于受老桥的影响,其设计、施工与新建项目存在很多不同之处。在桥梁设计、施工中通常注重成桥状态,容易忽视施工过程中对老桥的保护。以某高速公路拼接桥梁为实例,介绍老桥沉降时的分析处理过程,提出... 详细信息

在高速公路改扩建项目中,桥梁加宽由于受老桥的影响,其设计、施工与新建项目存在很多不同之处。在桥梁设计、施工中通常注重成桥状态,容易忽视施工过程中对老桥的保护。以某高速公路拼接桥梁为实例,介绍老桥沉降时的分析处理过程,提出岩溶区桥梁在设计和施工中的预防措施和注意事项,可为拼宽桥梁桩基沉降的加固处理和预防提供参考。

关键词：高速公路桥梁工程改扩建桥梁拼接岩溶沉降

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Collaborative Control of Novel Uninterrupted Propulsion System for All-Climate Electric Vehicles

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Automotive Innovation 2022年第1期5卷 18-28页

作者： Cheng Lin xiao Yu Mingjie Zhao Jiang yi Ruhui Zhang National Engineering Laboratory for Electric Vehicles Beijing Institute of TechnologyBeijingChina State Key Laboratory of Automotive Safety and Energy Tsinghua UniversityBeijingChina Collaborative Innovation Center of Electric Vehicles in Beijing Beijing Institute of TechnologyBeijingChina

Over the past decade,the electric vehicle industry of China has developed rapidly,reaching one of the highest technological levels in the ***,most electric buses currently serve urban areas,being unsuitable for all-climate *** response to the objective of massively adopting electric vehicles for transportation during all the events of the 2022 Beijing Winter Olympics,a dual-motor coaxial propulsion system for all-climate electric vehicles is *** system aims to meet operating requirements such as high speed and adaptability to mountainous roads under severely cold *** system provides three operating modes,whose characteristics are analyzed under different *** addition,dual-motor collaborative control strategy with collaborative gearshift and collaborative power distribution is proposed to eliminate power interruption during gearshift process and achieve intelligent power distribution,thus improving the gearshift quality and reducing energy ***,gear position calibration for all-climate operation and proper gearshift is *** results demonstrate the advantages of the proposed dual-motor coaxial propulsion system regard-ing gearshift compared with the conventional single-motor automatic transmission.

关键词： Dual-motor coaxial propulsion system·Collaborative control·Gear position calibration·All-climate operation

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基于物联网技术的整套路灯管理系统设计

机电工程技术 2024年第3期53卷 293-297页

作者：李增勇阮毅萧倩美广东朗杰光源有限公司广东中山528400 广东省机械研究所有限公司广州510799

路灯照明是城市关键基础设施,为了降低路灯照明的能源消耗,分析了研究现有路灯照明控制系统的运行和现场使用情况,提出了基于物联网技术的整套路灯管理系统设计。新设计通过采集现场各类环境、电参数等实时信息,结合多场景控制模式,实... 详细信息

路灯照明是城市关键基础设施,为了降低路灯照明的能源消耗,分析了研究现有路灯照明控制系统的运行和现场使用情况,提出了基于物联网技术的整套路灯管理系统设计。新设计通过采集现场各类环境、电参数等实时信息,结合多场景控制模式,实现对路灯的精细化管理,通过实践应用证明,该系统具备稳定性、可靠性以及强大的功能,能够实现对采集的数据进行有效地传输和管理,达到了节能、高效的目的,为城市提供了更为智能化、数字化以及可持续的照明解决方案。

关键词：智慧路灯城市道路照明路灯设计

The dynamics of river confluences and their effects on the ecology of aquatic environment:A review

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Journal of Hydrodynamics 2022年第1期34卷 1-14页

作者： Sai-yu Yuan Lei Xu hong-wu Tang Yang xiao Carlo Gualtieri State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai UniversityNanjing210024China Yangtze Institute for Conservation and Development Nanjing210024China Department of Structures for Engineering and Architecture University of Napoli Federico IINapoliItaly

Confluences act as critical nodes in a river *** affect hydrodynamics,sediment transport,bed morphology,and eco-hydraulics of the river *** of streams produces the complex mechanism of flow momentum and mass mixing which may affect the aquatic environment locally and even lasting for a long distance *** confluence creates a hotspot for the river system’s ecological change,which usually leads to changes in water temperature,suspended-sediment load,bed material,nutrient concentrations,water chemistry,and organic-matter ***,the dynamics of river confluences are very complex and have critical effects on river system’s water environment and *** this reason,a review summarizing turbulent flow,sediment transport,morphological-dynamics,mixing processes,and their effects on the ecology of the aquatic environment at river confluences is in order.A future research agenda and opportunities pertinent to river confluence are vitally emphasized as a multidisciplinary research topic.

关键词： River confluence hydrodynamics sediment transport morpho dynamics water environment water ecology