Strategies for Improving the Effectiveness of Professional Practice for Full-Time Professional Master Degree Postgraduate in Mineral Processing Engineering

In order to gain practical experience and hands-on skills,full-time professional master degree postgraduate in mineral processing engineering should engage in professional practices.Nonetheless,a series of problems,including insufficient time for practice,low management level,inadequate implementation of the double-supervisor system,and poor results of professional practice,has reduced the effectiveness of professional practice.In view of the aforementioned problems and the characteristics of the discipline,this paper proposes several strategies for improving the effectiveness of professional practice for postgraduates in mineral processing engineering.

The concept and characteristics of clinical practice ability in Master Degree of Nursing (specialty)

The concepts of ability, practice ability, and professional practice ability were analyzed using a theoretical research method. Based on the results of the analysis, the concept of clinical practice ability for Master Degree of Nursing（specialty） students was de？ned, and the characteristics were interpreted to provide references for future in-depth studies.

Exploring the Gaps between Master's Degree Holders' Competence and Industrial Demands in Urban and Rural Planning: Senior Field Engineers' Observations and Reflexive Narrative

This paper examines the academic-work gap in terms of performance reality and performance expectations by expanding on the cultivation model of Master's students in the university context and the most recent industry requirements for talents'competence.The subjects of this paper are Master's degree holders,both academic and professional.The paper examines common issues encountered by enterprise professionals when employing Master's degree holders and proposes a university-enterprise joint cultivation model to achieve win-win outcomes for both higher education institutions and businesses.

Imprisoned Former General Manager Working for Master's Degree

The following is a narration before the video camera of the Henan TV Station on December 27, 2003 by a prison inmate named Liu Xianwei,former general manager of the Zhengzhou Sanxing Company, who is now working for a master＇s degree in the prison.

图书情报硕士专业学位(MLIS)教育发展状况调查报告(2023)

[目的/意义]全面、客观地反映我国MLIS教育在2023年的状况和发展变化。[研究设计/方法]采用调查问卷收集MLIS培养单位师资、招生、教育培养、就业等方面的数据,通过统计描述和对比反映现状,揭示发展变化。[结论/发现]我国MLIS教育稳健发展。具体表现为:师资队伍稳定增长,招生规模不断扩大,培养特色鲜明,毕业生就业状况良好,各培养单位的课程设置、教育资源建设和培养过程管理日益规范。[创新/价值]连续11年发布MLIS教育发展状况调查报告,为学位和教育管理部门以及各培养单位决策提供支持。

Research on Dynamic Relationship between Agricultural Insurance and Agricultural Disaster Degree

Agricultural insurance is an important system of rural financial support for agricultural development.Based on the analysis of agricultural insurance improving farmers'anti-risk ability and reducing the damage,the dynamic relationship is discussed with the adoption of error correction model and the data of Guangdong province between 1997 and 2010.The result shows that the promotion of agricultural insurance depth is beneficial to reducing agricultural damage degree and there exists long-term equilibrium relationship.More precisely,agricultural insurance depth is the Granger reason of agricultural damage degree while the reverse relationship has not been supported yet.Based on the empirical analysis,this paper discusses the characteristics and foundation of agricultural production as well as market characteristics of agricultural insurance to further explore the necessity of financial support.

基于改进D-S理论的多时刻空中目标威胁评估

针对单时刻空中目标威胁评估存在的抗干扰能力弱、可靠性不足等问题,建立一种基于改进D-S证据理论的多时刻空中目标威胁评估模型。首先,根据空战时间线,定义多时刻空中目标威胁评估时段范围;然后,在单时刻空中目标威胁等级概率分配基础上,利用D-S证据理论融合各时刻证据信息;同时,针对D-S证据理论不能处理高冲突证据的弊端及其现有改进方法计算量较大的不足,引入偏移度的概念,确定各时刻证据源权重,对加权证据进行D-S融合。数值算例表明,该模型算法复杂度低;能有效处理波动数据、稳定性强,并且可减弱高冲突证据融合对威胁评估带来的不利影响,为最终决策提供了更准确的判别依据。

基于等效结构应力法的高强钢焊接结构低温主S-N曲线

现有的疲劳S-N曲线已不再适用于北极的低温环境,为了评估北极海洋工程设备材料的低温疲劳寿命,有必要建立金属结构尤其是焊接结构的低温疲劳S-N曲线。本文基于等效结构应力法,计算出Q690高强钢管环焊缝的主S-N曲线,并通过共振疲劳试验对该方法进行了验证。在此基础上,结合大量的高强钢焊接结构试验结果,将温度敏感因子c引入到低温疲劳主S-N曲线的推导中,首次建立了基于低温金属焊接结构的主S-N曲线,并对文献中的疲劳S-N试验数据和ASME中的修正方法进行了对比和验证。结果表明,等效结构应力法能够较准确地计算出焊缝疲劳S-N曲线,推导出的金属焊接结构低温主S-N曲线与试验曲线吻合较好,能够满足低温地区工程要求,可为高强钢焊接结构在北极地区低温环境中的广泛应用提供理论指导。该方法可以为金属焊接结构的低温疲劳研究节省大量的成本,减少非标准试验操作造成的不必要的误差。这对北极海洋工程设备的设计、安全运行和疲劳评估具有重要意义。

Effect of Curing Regime on Degree of Al^(3+) Substituting for Si^(4+) in C-S-H Gels of Hardened Portland Cement Pastes

The effect of curing regime on degree ofAl3＋ substituting for Si^4＋ （Al/Si ratio） in C-S-H gels of hardened Portland cement pastes was investigated by 29Si magic angel spinning （MAS） nuclear magnetic resonance （NMR） with deconvolution technique. The curing regimes included the constant temperature （20, 40, 60 and 80 ℃） and variable temperature （simulated internal temperature of mass concrete with 60 ℃ peak）. The results indicate that constant temperature of 20 ℃ is beneficial to substitution ofAl3＋ for Si4＋, and AI/Si ratio changes to be steady after 180 d. The increase of Al/Si ratio at 40 ℃is less than that at 20℃ for 28 d. The other three regimes of high temperature increase Al/Si ratio only before 3 d, on the contrary to that from 3 to 28 d. However, the 20 ℃ curing stage from 28 to 180 d at variable temperature regime, is beneficial to the increase of AI/Si ratio which is still lower than that at constant temperature regime of 20 ℃ for the same age. A nonlinear relation exists between the Al/Si ratio and temperature variation or mean chain length （MCL） of C-S-H gels, furthermore, the amount ofAl3＋ which can occupy the bridging tetrahedra sites in C-S-H structure is insufficient in hardened Portland cement pastes.

全程·融合·协同:教育硕士U-G-S协同培养模式的创新实践研究

教育硕士是职前教师培养的重要对象,是高素质研究型教师队伍的重要来源。教育硕士U-G-S协同培养是我国教师队伍建设政策的主旨所向,更是卓越教育硕士培养的现实所需。以J大学教育硕士为研究样本,以利益相关者理论为理论基础,厘清U-G-S协同培养模式中各利益主体之间的互动关系及利益诉求,形成U-G-S协同培养模式的运行程序,并依据“计划、行动、观察、反思”的步骤开展行动实践。研究结果显示,U-G-S协同培养模式在导师团队建设、人才素养提升、研究成果产出等多方面取得显著成效。

基于S变换相关度的配电网单相接地自适应有源消弧法

提出了基于S变换相关度的配电网单向接地自适应有源消弧法,有效消除了配电网单相接地故障电弧,提升了电力系统稳定性。采集配电网线路零序电流时序数据,经S变换获取零序电流时频信息矩阵后,计算并获取各线路间时频信息矩阵相关度矩阵,输入卷积神经网络模型,输出单相接地故障选线结果;在故障线路采用基于模糊准PR与PI控制的双闭环自适应控制方法,向配电网故障线路中性点注入零序电流,有效控制注入电流相位以及幅值,迫使配电网故障线路所在相的电压值为0,完成自适应有源消弧。实验结果表明:该方法可有效识别配电网单相接地故障线路,实现配电网单相接地自适应有源消弧,且可尽快完成单相接地自适应有源消弧工作,保证配电网安全稳定运行。

From Pythagoras Theorem to Fermat’s Last Theorem and the Relationship between the Equation of Degree <i>n</i>with One Unknown

The most interesting and famous problem that puzzled the mathematicians all around the world is much likely to be the Fermat’s Last Theorem. However, since the Theorem was proposed, people can’t find a way to solve the problem until Andrew Wiles proved the Fermat’s Last Theorem through a very difficult method called Modular elliptic curves in 1995. In this paper, I firstly constructed a geometric method to prove Fermat’s Last Theorem, and in this way we can easily get the conclusion below: If a and b are integer and?a = b, n ∈ Q and n > 1, the value of c satisfies the function an + bn = cn that can never be integer;if a, b and c are integer and a ≠ b, n is integer and n > 2, the function an + bn = cn cannot be established.

Analysis on Observing Results ofVacuum Degree in Soft Groundby Vacuum-Surcharge Preloading

This paper analyzes the observing results of vacuum degree in the the Jialichen bridge-head experimental site .The cause of vacuum degree developing below groundwater table is pointed out. The influence of vacuum degree above the ground water table on pore water pressure is discussed. The results show that vacuum degree decreases along the depth because resistance. The resistance in the PVDS is lowest, in the silt is highest. Vacuum degree below groundwater table is produced mainly by dewatering or by escaping of sealed air from the end of flexible pipe. Vacuum degree above the ground water table in the sand drains makes great effect on pore water pressure. In the silt the pore water pressure does not change with the variation of vacuum degree under membrane in a short time.

基于Web of Science数据库的护理硕士研究生教育领域研究趋势的可视化分析

目的:了解近10年护理硕士研究生教育领域在全球的研究热点、研究现状和发展趋势。方法:通过Web of Science检索2013年1月1日—2023年3月1日护理硕士研究生教育领域的英文文献,对收集到英文文献的年度发文量、国家发文量、作者发文量、机构发文量、关键词聚类共现的数据进行可视化处理,分析其研究热点。CiteSpace软件用于检测关键字突现。结果:护理硕士研究生教育领域全球年度发文量呈整体逐步上升趋势;关键词共现聚类分析结果显示,研究热点主题集中在多领域服务实践、心理支持策略、跨专业教育课程、研究生教育模式。结论:近10年护理硕士研究生教育处于迅速发展阶段,护理硕士研究生模拟训练策略、临床思维能力、社会适应能力、跨学科模式等可能是未来该领域研究的热点和方向。未来发展跨学科研究生教育模式,充分发挥护理硕士研究生优势,提高其社会适应能力水平。

A Contrastive Genre Analysis of English Abstracts of Bachelor's Degree Thesis:Economics and Humanities & Social Sciences

The move identification of the present study followed the four-move model of V.K.Bhatia who is the representative personage of ESP.It is composed of four moves(1993):Introducing purpose,Describing methodology,Summarizing results and Presenting conclusions.According to the above theory,Principles of the scientific method of sampling suggested by Nwogu(1997:121)as to the selection of journal were adopted in the study—representativity,reputation,accessibility.The focus is the analysis of move structures of abstract sections of them and contrastive studies between Economics and Humanities&Social Sciences of Lanzhou Jiaotong University in different moves of abstract sections.We find there are some similarities and differences between them.In general,the abstracts of Humanities&Social Sciences are more standard than Economics,which suggested English abstract sections of some Economics bachelor’s degree thesis need to be improved.

超声生物显微镜与IOL-Master测量人眼睫状沟直径的比较性研究

目的:比较分析超声生物显微镜(ultrasound biomicroscopy,UBM)与IOL-Master测量人眼睫状沟直径的差异,为更准确地计算有晶状体眼后房型人工晶状体植入术(phakicposterior chamber intraocular lens,PPCIOL)也称为可植入的接触镜(implantable contact lens,ICL)的直径提供客观依据(以下简称ICL),从而有效减少术后并发症。方法:选取植入ICL术后1mo的高度近视眼患者32例(60眼)和正视对照组人群28例(48眼),分别作为实验组和对照组,对照组要求排除任何眼科手术史。应用UBM分别测量实验组和对照组的睫状沟直径;应用IOL-Master测量实验组和对照组的角膜横径即水平白到白的距离(whitetowhite,W-W),将所得的数据进行统计学分析。结果:植入ICL后1mo患者的UBM测得的睫状沟直径与IOL-Master测得的W-W值比较其差异有统计学意义(t=2.023,1.988;P<0.05);健康人眼的UBM测得的睫状沟直径与IOL-Maste测得的W-W值比较其差异有统计学意义(P<0.05);ICL术后患者与健康眼的UBM测得的睫状沟直径值比较其差异无统计学意义;二者的IOL-Master测得的W-W值比较其差异也无统计学意义。结论:UBM可以作为测量人眼睫状沟直径的工具;应用IOL-Master眼外测得W-W值与UBM测得的睫状沟直径值是有区别的,我们更倾向于应用UBM测得的值;人眼是存在解剖变异的,这些变异会增加ICL植入的危险性。

IOL Master联合A超对3,4级核晶状体进行人工晶状体度数测量

目的 :探讨IOLMaster及A超对 3,4级核晶状体进行人工晶状体度数测量时联合应用的优势。方法 :对4 8例 (6 0只眼 ) 3,4级核患者行术前人工晶状体度数测量 ,测量采用IOLMaster联合A超及单纯使用A超两种方法 ,每组 30眼。另晶状体核分级为 2级的 19例 (30只眼 )单纯使用IOLMaster测量。术后 3月比较 3组人工晶状体度数偏差值。结果 :IOLMaster联合A超组 ,人工晶状体度数偏差为 0 .5 83± 0 .337;单纯使用A超组 ,人工晶状体度数偏差为 1.186± 0 .4 30 ;单纯使用IOLMaster组人工晶状体度数偏差为 0 .5 71± 0 .32 9。结论 :IOLMaster联合A超测量人工晶状体度数偏差小于单纯使用A超组 ,前者可为 3,4级核的人工晶状体度数测量提供更准确可靠的数据。

IOL-Master测量人工晶体屈光度长期稳定性研究

目的通过对白内障超声乳化术的术前及术后IOL-Master测量结果及验光结果比较,了解IOLMaster测量人工晶体屈光度长期稳定性。方法对2011年4~10月我院行白内障超声乳化摘除及人工晶状体植入术的年龄相关性白内障11例17眼的白内障进行术前IOL-Master测量人工晶状体度数,术后8~14月复测并与综合验光仪验光结果比较。结果白内障术后眼轴测量均缩短,与术前相比有显著性差异(P【0.01)。术后实际验光球镜度数与术前IOL-Master计算后预留度数相比均减少,有显著性差异(P【0.01);术后角膜曲率及角膜散光无显著性差异;散光轴向改变,有显著性差异(P【0.05)。结论 IOL-Master仪的测量准确性好,重复性高,为达到最佳术后预期,应在检测预期度数上适当增加度数。

Zeiss IOL Master与A超测量人工晶体度数的临床比较

目的比较Zeiss IOL Master与A超测量人工晶体度数的准确性和临床应用价值。方法选取2014-01~2015-09该院眼科116例(119只眼)白内障患者,术前均采用Zeiss IOL Master和A超测量眼部参数,并采用SRK-T公式植入人工晶体度数,同时按照A超测得的眼轴长度分为长眼轴组(L>26 mm)、短眼轴组(L≤22 mm)和正常眼轴组(22 mm<L≤26 mm),均在术后1个月进行屈光状态分析。结果各组患眼经IOL Master测量眼轴长度长于A超测量,各眼轴组组内比较差异均有统计学意义(P<0.05);IOL Master和A超测量所得术后绝对屈光误差值(MAE)比较差异均无统计学意义(P>0.05);IOL Master和A超术后测得MAE≤0.50 D、MAE≤1.00 D、MAE≤2.00 D患者百分比之间比较差异无统计学意义(P>0.05)。结论Zeiss IOL Master与普通A超相比,在测量人工晶体度数方面准确性更高,且操作更方便,有较高的临床应用价值。

SPOC联合“五步”教学法在护理硕士研究生文献研讨课程中的应用

目的:探讨SPOC联合“五步”教学法在护理硕士研究生文献研讨课程中的应用效果。方法:采用整群抽样法选取山西省某高校2019级及2020级护理硕士研究生为研究对象。将2019级护理硕士研究生(73人)作为对照组,2020级护理硕士研究生(93人)作为试验组。对照组采用常规教学方案进行文献研讨课程教学,试验组采用SPOC联合“五步”教学法进行文献研讨课程教学。比较两组学生自主学习能力、科研能力、批判性思维能力、考核成绩。结果:干预后,试验组学生护理专业大学生自主学习能力测评量表总分及各维度得分均高于对照组,护理人员科研能力自评量表总分高于对照组,考核成绩高于对照组,差异均有统计学意义(P<0.05)。结论:SPOC联合“五步”教学法能够提高护理硕士研究生自主学习能力、科研能力、考核成绩,对护理硕士研究生批判性思维能力有积极影响。