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基于TestBed/TBrun的高效测试执行方法
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作者 罗睿梅 万东燕 +2 位作者 唐超 辛增献 陈铖 《制导与引信》 2024年第2期25-28,49,共5页
在使用TestBed/TBrun工具执行软件单元测试用例过程中,存在长数组无法自动赋值和结果比对导致测试效率低的问题。针对该问题,提出了一种基于TestBed/TBrun的高效测试执行方法。通过在后台文件中建立可自动识别读取长数组的通用驱动函数... 在使用TestBed/TBrun工具执行软件单元测试用例过程中,存在长数组无法自动赋值和结果比对导致测试效率低的问题。针对该问题,提出了一种基于TestBed/TBrun的高效测试执行方法。通过在后台文件中建立可自动识别读取长数组的通用驱动函数和自动对比测试结果的比对函数,对软件单元中的长数组输入/输出变量进行自动赋值及结果比对。经测试验证,该方法降低了用例执行耗时,提高了测试执行效率。 展开更多
关键词 testBed/TBrun 单元测试 通用驱动函数 比对函数 长数组
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Comparison of T-2 Toxin and HT-2 Toxin Distributed in the Skeletal System with That in Other Tissues of Rats by Acute Toxicity Test 被引量:3
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作者 YU Fang Fang LIN Xia Lu +5 位作者 YANG Lei LIU Huan WANG Xi FANG Hua Mikko J.LAMMI GUO Xiong 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2017年第11期851-854,共4页
Twelve healthy rats were divided into the T-2 toxin group receiving gavage of 1 mg/kg T-2 toxin and the control group receiving gavage of normal saline. Total relative concentrations of T-2 toxin and HT-2 toxin in the... Twelve healthy rats were divided into the T-2 toxin group receiving gavage of 1 mg/kg T-2 toxin and the control group receiving gavage of normal saline. Total relative concentrations of T-2 toxin and HT-2 toxin in the skeletal system(thighbone, knee joints, and costal cartilage) were significantly higher than those in the heart, liver, and kidneys(P 〈 0.05). The relative concentrations of T-2 toxin and HT-2 toxin in the skeletal system(thighbone and costal cartilage) were also significantly higher than those in the heart, liver, and kidneys. The rats administered T-2 toxin showed rapid metabolism compared with that in rats administered HT-2 toxin, and the metabolic conversion rates in the different tissues were 68.20%-90.70%. 展开更多
关键词 comparison of T-2 Toxin HT-2 Toxin Distributed in the Skeletal System That in Other Tissues of Rats by Acute Toxicity test
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Comparison, Selection and Progeny Test of Natural Populations of White Birch (Betula platyphylla Suk.) in Northern China
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作者 Shibo LAN 《Agricultural Biotechnology》 CAS 2019年第4期113-118,共6页
[Objectives]This study was conducted to rationally and effectively use natural genetic resources of white birch(Betula platyphylla Suk.),and improve the scientific and technological content of improved varieties.[Meth... [Objectives]This study was conducted to rationally and effectively use natural genetic resources of white birch(Betula platyphylla Suk.),and improve the scientific and technological content of improved varieties.[Methods]With the progeny of the white birch populations naturally distributed in northern China as objects,based on genetic effect analysis and comprehensive evaluation,the genetic variation,heritability and genetic gain of the growth characters in the progeny forest were systematically analyzed,by which populations or individuals with good growth vigor and strong stress resistance and adaptability were finally selected.[Results]There were extremely significant differences in the growth characters between the natural populations of white birch in northern China.The variation was the smallest in tree height,followed by crown width,and largest in DBH,and the average coefficients of variation were 20.56%,32.25%and 33.00%,respectively.The differences in characters between progeny of the same population were also extremely significant.The growth characters of white birch were more controlled by genes,and the genetic gains were larger.The heritability of tree height,DBH and crown width was 0.971,0.816 and 0.576,respectively,and the genetic gains were 15.97%,21.54%and 13.87%,respectively.[Conclusions]With the growth characters as the main evaluation indexes,taking various influencing factors into account,the Shanxi[SX]population,Hebei[HB]population and Liaoning[LN]population were selected to be excellent populations,and LN305,SX516 and HB403 were excellent individuals,which are advised to be widely used in multi-generation genetic improvement breeding. 展开更多
关键词 BETULA platyphylla Suk. Natural population comparison and SELECTION PROGENY test GENETIC effect GENETIC gain
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The “Colour Family Drawing Test”: Assessing Children’s Perception of Family Relationships. Studies on Mental Health and Cross-Cultural Comparisons
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作者 Valeria Biasi Paolo Bonaiuto James M. Levin 《Health》 2015年第3期300-307,共8页
We apply the Colour Family Drawing Test, as a development of the traditional black and white test, for cross-cultural comparison. The participants, aged 7 - 10 years, both genders, were examined individually. Each sub... We apply the Colour Family Drawing Test, as a development of the traditional black and white test, for cross-cultural comparison. The participants, aged 7 - 10 years, both genders, were examined individually. Each subject sat at a single table with a white rectangular card of standard size, 24 well-sharpened colour pencils, a black pencil, an eraser and other appropriate tools. S/he received this verbal instruction: “Draw your family”. The procedure was firstly applied to 120 participants attending primary schools of Rome (Biasi, Bonaiuto and Levin, 2014). The families were evaluated through a semi-structural interview conducted with the children’s teachers and divided into: Harmonious versus Very Conflictual Families. The drawings made by children of Harmonious Families consistently used “Reassuring and Playful Colours” (Pink, Orange, Sky Blue, Light Green, Light Yellow, other pastel colours);and were larger, tidier and more proportioned to respect the opposite group. Children belonging to Conflictual Families used mostly “Alarming and Serious Colours” (Grey, Black, Dark Bleu, Violet, Olive Green) and their drawings were less extended, more often disordered and had typical deformations such as figures too thin. A second investigation examined 120 participants belonging to Asian immigrant families residing in Italy. A third investigation examined 120 participants belonging to Russian families of Moscow. Both last two investigations obtained very similar results on the use of colours, and gave a confirmation of the relevance of the Colour Family Drawing Test. 展开更多
关键词 COLOUR Conflictual FAMILY Cross-Cultural comparison COLOUR DRAWING FAMILY test EXPRESSIVENESS
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Software Testing Method Based on Model Comparison
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作者 谢晓东 卢炎生 毛澄印 《Journal of Southwest Jiaotong University(English Edition)》 2008年第2期99-108,共10页
A model comparison based software testing method (MCST) is proposed. In this method, the requirements aria programs or software under test are transformed into the ones in the same form, and described by the same mo... A model comparison based software testing method (MCST) is proposed. In this method, the requirements aria programs or software under test are transformed into the ones in the same form, and described by the same model describe language (MDL). Then, the requirements are transformed into a specification model and the programs into an implementation model. Thus, the elements and structures of the two models are compared, and the differences between them are obtained. Based on the diffrences, a test suite is generated. Different MDLs can be chosen for the software under test. The usages of two classical MDLs in MCST, the equivalence classes model and the extended finite state machine (EFSM) model, are described with example applications. The results show that the test suites generated by MCST are more efficient and smaller than some other testing methods, such as the pathcoverage testing method, the object state diagram testing method, etc. 展开更多
关键词 Software testing test suite generation Model comparison
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Quantum private comparison of arbitrary single qubit states based on swap test
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作者 Xi Huang Yan Chang +2 位作者 Wen Cheng Min Hou Shi-Bin Zhang 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第4期123-132,共10页
By using swap test,a quantum private comparison(QPC) protocol of arbitrary single qubit states with a semi-honest third party is proposed.The semi-honest third party(TP) is required to help two participants perform th... By using swap test,a quantum private comparison(QPC) protocol of arbitrary single qubit states with a semi-honest third party is proposed.The semi-honest third party(TP) is required to help two participants perform the comparison.She can record intermediate results and do some calculations in the whole process of the protocol execution,but she cannot conspire with any of participants.In the process of comparison,the TP cannot get two participants’ private information except the comparison results.According to the security analysis,the proposed protocol can resist both outsider attacks and participants’ attacks.Compared with the existing QPC protocols,the proposed one does not require any entanglement swapping technology,but it can compare two participants’ qubits by performing swap test,which is easier to implement with current technology.Meanwhile,the proposed protocol can compare secret integers.It encodes secret integers into the amplitude of quantum state rather than transfer them as binary representations,and the encoded quantum state is compared by performing the swap test.Additionally,the proposed QPC protocol is extended to the QPC of arbitrary single qubit states by using multi-qubit swap test. 展开更多
关键词 quantum private comparison arbitrary single qubit states swap test quantum cryptography
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Comparison Test of Black Grey Oyster Mushrooms in Shandong Province in Winter and Spring
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作者 Jiale ZHOU Jiandong HAN +4 位作者 Chunyan HUANG Qiang YAO Hongyan XIE Peng YANG Jin LI 《Agricultural Biotechnology》 CAS 2021年第6期90-92,95,共4页
[Objectives]This study was conducted to screen high-yield and high-quality strains suitable for promotion and cultivation in Shandong Province in winter and spring,and provide production enterprises with better produc... [Objectives]This study was conducted to screen high-yield and high-quality strains suitable for promotion and cultivation in Shandong Province in winter and spring,and provide production enterprises with better production strains.[Methods]The clinker bag cultivation method was used to compare the cultivated products of 30 Pleurotus spp.strains,and the data on mycelial growth rate,growth morphology,biological characteristics of fruit bodies and yield were collected for comparison.[Results]Compared with other strains,such four strains as Pinggu 8633,Gaochan 8105,Tekang 650 and Ping 8129 had significantly higher adaptability,higher yield and better marketability.[Conclusions]Pinggu 8633,Gaochan 8105,Tekang 650 and Ping 8129 can be used as the main varieties for winter and spring oyster mushrooms production in Shandong Province. 展开更多
关键词 Oyster mushrooms comparison test Cultivated strains
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Inspection and testing stressed in standards comparison and compliance action
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《China Standardization》 2019年第3期7-7,共1页
The symposium on inspection and testing bodies in the special action on standards comparison and complianee of 10,000 enterprises of 1,000 sectors in 100 cities was held in Beijing on April 16,which was attended by mo... The symposium on inspection and testing bodies in the special action on standards comparison and complianee of 10,000 enterprises of 1,000 sectors in 100 cities was held in Beijing on April 16,which was attended by more than 70 representatives from SAMR and inspection and testing bodies. 展开更多
关键词 INSPECTION testING STANDARDS comparison
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Comparison of three methods for paternity test
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《中国输血杂志》 CAS CSCD 2001年第S1期384-,共1页
关键词 comparison of three methods for paternity test
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Comparison of the diagnostic value of four tests for superior labrum anterior and posterior lesions of the shoulde
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作者 郑昱新 《外科研究与新技术》 2005年第3期178-179,共2页
To compare the diagnostic value of four signs for superior labrum anterior and posterior (SLAP) lesions of the shoulder.Methods The physical examination was performed randomly on 81 cases with abnormalities of the sho... To compare the diagnostic value of four signs for superior labrum anterior and posterior (SLAP) lesions of the shoulder.Methods The physical examination was performed randomly on 81 cases with abnormalities of the shoulder.There were four tests,including Kibler anterior sliding test,Liu crank test,O’Brien active compression test and Kim biceps load test Ⅱ.The arthroscopic examination were also performed.The result of the arthroscopic examination was considered as a golden standard,so that we could estimate the diagnosis value of the four tests according to the method of evaluation of diagnosis test on clinical epidemiology,their sensitivity,specificity,positive and negative predictive value,accuracy.Results There were 21 cases diagnosed as SLAP lesions by arthroscopy.The diagnosis value of Kim biceps load test Ⅱ was the highest among the four tests,in which 19 of true positive,59 of true negative,1 of false positive,only 2 of false negative cases;while the sensitivity was 90.48%,specificity was 98.33%,positive predictive value was 95.00%,negative predictive value was 96.72%,and accuracy was 96.30%.However the sensitivity,specificity,positive predicitive value,negative predictive vale and accuracy of Kibler anterior sliding test were 76.19%,96.67%,88.89%,92.06%,91.33%;and those of Liu crank test were 85.71%,93.33%,81.82%,94.92%,91.35%;those of O’Brien active compression test were 80.95%,91.66%,77.27%,93.22%,88.89%.Conclusion Kim Biceps load test Ⅱ may be the best for clinical diagnosis of SLAP lesions of the shoulder.9 refs,4 figs,2 tabs. 展开更多
关键词 comparison of the diagnostic value of four tests for superior labrum anterior and posterior lesions of the shoulde
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龙燕1号燕麦新品种的选育
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作者 王建丽 庄煦 +6 位作者 牟林林 韩微波 张冬梅 尤佳 邸桂俐 王晓龙 申忠宝 《黑龙江畜牧兽医》 CAS 北大核心 2024年第12期89-93,100,共6页
为了选育高产、优质、适应东北三省及内蒙古地区种植的燕麦新品种,试验于2015年采用母本边锋和父本牧乐思进行种间杂交,并通过系统衍生法进行选育,对选育得到的燕麦新品种进行品种比较试验、区域试验及生产试验。结果表明:经选育得到龙... 为了选育高产、优质、适应东北三省及内蒙古地区种植的燕麦新品种,试验于2015年采用母本边锋和父本牧乐思进行种间杂交,并通过系统衍生法进行选育,对选育得到的燕麦新品种进行品种比较试验、区域试验及生产试验。结果表明:经选育得到龙燕1号燕麦,其2019—2020年两年平均干草产量及种子产量分别为15 100.0 kg/hm^(2)、4 760.3 kg/hm^(2),较对照牧乐思、白燕7号分别增产16.84%、11.71%和14.96%、11.11%,差异显著(P<0.05);两年(2022,2023年)多点(齐齐哈尔市、哈尔滨市、双鸭山市、绥化市)的平均干草产量龙燕1号最高,达9 857.14 kg/hm^(2),分别比对照青海444、青引2号增产18.11%、45.30%,差异极显著(P<0.01);在4个试验区哈尔滨市、兰西县、杜蒙县、肇东市的两年平均干草产量分别达到11 812.73 kg/hm^(2)、9 602.57 kg/hm^(2)、12 263.64 kg/hm^(2)和11 961.97 kg/hm^(2),比对照白燕7号分别增产11.57%、11.92%、12.60%、11.24%。说明饲用燕麦新品种龙燕1号燕麦相较亲本具有更好的生产性能,在东北三省均可种植。 展开更多
关键词 龙燕1号燕麦 新品种 选育 生产试验 品种比较试验 区域试验
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《兽药比对试验要求》修订变化与意义
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作者 陆连寿 冯华兵 +7 位作者 杨大伟 梁先明 苏富琴 冯克清 安洪泽 杜雨 汪霞 卢旺 《中国兽药杂志》 2024年第8期47-51,共5页
开展兽药比对试验是兽药产品批准文号管理的重要政策之一。为科学规范兽药比对试验目录产品的批准文号申请,农业农村部畜牧兽医局在2016年发布实施的《兽药比对试验要求》基础上,结合国内兽药比对研究现状,2024年修订发布了《兽药比对... 开展兽药比对试验是兽药产品批准文号管理的重要政策之一。为科学规范兽药比对试验目录产品的批准文号申请,农业农村部畜牧兽医局在2016年发布实施的《兽药比对试验要求》基础上,结合国内兽药比对研究现状,2024年修订发布了《兽药比对试验要求》。本文详细阐述了兽药比对试验要求的修订背景、主要变化和修订意义,旨在加强研发单位或相关临床试验机构对该项政策的理解,并对开展兽药比对试验提供指导和帮助。 展开更多
关键词 兽药 比对试验要求 主要变化 修订意义
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兽药产品批准文号药学研究资料常见问题浅析
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作者 宫爱艳 郝智慧 +1 位作者 冯克清 安洪泽 《中国兽药杂志》 2024年第7期20-25,共6页
本文通过对已审药学资料的审查分析,从产品信息、处方、工艺、质量标准、稳定性研究等方面对药学申报资料的常见问题加以分析总结并提出了针对性建议,旨在规范药学研究资料编写,以期对兽药产品批准文号申请有所帮助。
关键词 兽药产品批准文号 比对试验 药学研究 问题
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水平受荷桩“p-y+M-θ”分析方法
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作者 王立忠 赖踊卿 +1 位作者 洪义 张友虎 《岩土工程学报》 EI CAS CSCD 北大核心 2024年第5期905-918,共14页
中国近海海上风电机组开发建设中,大直径单桩基础形式使用占比超70%。现行p-y曲线设计方法主要适用于小直径柔性桩,对大直径单桩侧向及桩底受荷描述能力不足,导致其严重低估刚柔性桩和刚性桩(分别常用于中国和欧洲的近海风电工程)的变... 中国近海海上风电机组开发建设中,大直径单桩基础形式使用占比超70%。现行p-y曲线设计方法主要适用于小直径柔性桩,对大直径单桩侧向及桩底受荷描述能力不足,导致其严重低估刚柔性桩和刚性桩(分别常用于中国和欧洲的近海风电工程)的变形和承载能力,过于保守的设计给海上风电降本带来挑战。为此建立了能以统一的方式预测柔性、刚柔性和刚性单桩水平单调受荷响应的“p-y+M-θ”模型,并将该模型推广到循环荷载下单桩的响应分析。通过与相关试验结果比对发现,“p-y+M-θ”模型能较为准确地预测桩基水平加载响应。力图为水平受荷单桩工程设计提供简洁而可行的响应分析方法。 展开更多
关键词 软黏土 “p-y+M-θ”模型 水平受荷桩循环加载 试验结果对比
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‘川西’虉草品种比较试验报告
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作者 季晓菲 周靖文 +6 位作者 闫利军 陈莉敏 李达旭 游明鸿 雷雄 罗国清 张建波 《草学》 2024年第4期12-17,37,共7页
以‘川草引3号’虉草和原始群体为对照,在布拖县对‘川西’虉草新品系开展了品种比较试验,对生态修复能力、耐水淹能力和生产性能等进行了测定和比较。试验结果表明:‘川西’虉草在布拖县越冬率高,可正常完成生长发育周期,试验期间没有... 以‘川草引3号’虉草和原始群体为对照,在布拖县对‘川西’虉草新品系开展了品种比较试验,对生态修复能力、耐水淹能力和生产性能等进行了测定和比较。试验结果表明:‘川西’虉草在布拖县越冬率高,可正常完成生长发育周期,试验期间没有发现病虫害;其生态修复效率为318d,分别比原始群体和‘川草引3号’虉草少12d和27d,具有更强的生态修复能力;‘川西’虉草和原始群体在长达20d的水淹胁迫过程中,成活率均为100%,耐水淹能力显著优于‘川草引3号’虉草;‘川西’虉草新品系鲜草产量和干草产量分别为70 931.57kg/hm^(2)和20 929.69kg/hm^(2),均显著高于原始群体和‘川草引3号’虉草;种子产量显著超过原始群体,与‘川草引3号’虉草差异不显著;粗蛋白含量为11.8%,分别比原始群体和‘川草引3号’虉草高1.2个百分点和2个百分点。因此,‘川西’虉草新品系一致性好,适应性强,生态修复效率高,耐水淹能力强,草产量高,草品质好,持青期长,可用于川西高原退化湿地、退化草地生态修复,也可用于高产人工草地建植。 展开更多
关键词 虉草 品种比较试验 生态修复 建植
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不同纳米黏土改良黄土试验结果对比分析 被引量:3
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作者 赵丹妮 曹宝花 +4 位作者 许江波 南亚林 陈能远 张鹏 王和平 《中外公路》 2024年第1期55-65,共11页
应用正交法设计试验,定量地分析了改良黄土抗压强度、抗剪强度指标以及渗透系数的影响因素和影响大小,得到了改良黄土的最优掺量。另外,通过扫描电镜试验探究纳米黏土材料对黄土的改良机理。研究表明:(1)影响改良黄土抗压强度因素有纳... 应用正交法设计试验,定量地分析了改良黄土抗压强度、抗剪强度指标以及渗透系数的影响因素和影响大小,得到了改良黄土的最优掺量。另外,通过扫描电镜试验探究纳米黏土材料对黄土的改良机理。研究表明:(1)影响改良黄土抗压强度因素有纳米黏土掺量、含水率和养护龄期,影响黏聚力、内摩擦角、渗透系数的因素有掺量、干密度、围压;(2)在不同影响因素下,纳米蒙脱土比凹凸棒土更能有效提高黄土的抗压强度;(3)当材料掺量小于等于1%时,凹凸棒土改良黄土的抗剪强度指标总体高于纳米蒙脱土抗剪强度指标,渗透系数则相反,而当掺量大于等于2%时,则相反;(4)当凹凸棒土材料掺加量为1%、纳米蒙脱土材料掺量为2%时,改良黄土表面最为致密,孔隙最少。 展开更多
关键词 正交试验 凹凸棒土 纳米蒙脱土 三轴试验对比 SEM扫描电镜试验
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不同配筋率下钢筋混凝土板柱节点抗冲切承载力试验研究 被引量:1
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作者 朱大壮 黄冰峰 +3 位作者 朴贤日 肖云峰 张耀庭 陈荣昌 《工程力学》 EI CSCD 北大核心 2024年第S01期66-73,共8页
为研究纵筋配筋率对普通钢筋混凝土板柱节点抗冲切承载力的影响,制作了4个配筋率分别为0.3%、0.7%、1.2%及1.8%的无腹筋板柱中节点并进行冲切试验,试验结果表明:随着配筋率的增加,板柱节点的初始刚度和极限承载力明显增加,试件的延性降... 为研究纵筋配筋率对普通钢筋混凝土板柱节点抗冲切承载力的影响,制作了4个配筋率分别为0.3%、0.7%、1.2%及1.8%的无腹筋板柱中节点并进行冲切试验,试验结果表明:随着配筋率的增加,板柱节点的初始刚度和极限承载力明显增加,试件的延性降低,破坏模式由弯曲破坏逐渐向冲切破坏转变;收集并整理了国内外269个板柱节点冲切试验的数据,通过与采用中国规范、美国规范、欧洲规范和日本规范抗冲切承载力计算公式计算结果的对比分析,进一步说明了在冲切承载力计算公式中考虑纵筋配筋率的必要性;通过对试验数据的回归分析,考虑包含纵筋配筋率在内的主要影响因素,建立了适用于钢筋混凝土无腹筋板柱抗冲切承载力的计算公式。 展开更多
关键词 板柱节点 纵筋配筋率 冲切试验 抗冲切承载力 规范对比 拟合分析
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文化视角下中美俄数学奥林匹克试题的比较研究 被引量:1
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作者 吕孙忠 雷沛瑶 +1 位作者 何忆捷 熊斌 《数学教育学报》 CSSCI 北大核心 2024年第3期12-18,共7页
数学竞赛是识别和培养数学英才的重要手段,在国际英才教育体系中占有重要地位.根据数学文化的内涵特点,构建面向数学竞赛试题的数学文化分类框架,以中、美、俄3个国家的试题为样本,分析和比较它们在知识源流、学科联系、社会角色、审美... 数学竞赛是识别和培养数学英才的重要手段,在国际英才教育体系中占有重要地位.根据数学文化的内涵特点,构建面向数学竞赛试题的数学文化分类框架,以中、美、俄3个国家的试题为样本,分析和比较它们在知识源流、学科联系、社会角色、审美娱乐和多元文化5个数学文化维度上的分布特点.研究发现,3个国家的试题都注重数学文化,各有特点,但主要集中在审美娱乐和社会角色两个方面.得到数学竞赛命题以及数学资优生培养的相关启示:重视数学文化试题价值,彰显“育人性”;精选数学文化主题素材,注重“多元性”;立足数学文化普及特点,体现“民族性”;链接数学文化内容发展,指向“前沿性”. 展开更多
关键词 数学竞赛 数学文化 试题比较 英才教育
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冷水(热泵)机组能效测试方法及能效限定值的对比研究
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作者 陶奕玮 刘剑 +4 位作者 李明霞 成建宏 高屹峰 方元 张小松 《制冷学报》 CAS CSCD 北大核心 2024年第2期30-40,共11页
冷水(热泵)机组作为集中空调系统的主要耗能设备,行业整体机组能效的提高会对按期实现“双碳”目标具有重大促进作用。GB/T 18430作为冷热水机组的基础性标准,修订工作已接近尾声,与之配套的能效标准GB19577—2015也需要进行相应的修订... 冷水(热泵)机组作为集中空调系统的主要耗能设备,行业整体机组能效的提高会对按期实现“双碳”目标具有重大促进作用。GB/T 18430作为冷热水机组的基础性标准,修订工作已接近尾声,与之配套的能效标准GB19577—2015也需要进行相应的修订升级。对GB/T 18430中对舒适型冷水(热泵)机组的考核方法与对应美国和欧洲的进行了对比分析,构建了一个水冷式冷水(热泵)机组的理论模型,从而将中国、美国和欧洲能效标准中规定的限定值水平折算为同一个指标下进行对比。对比发现,我国目前水冷式机组的IPLV入门限定值分别提升5.4%和25.2%后可以达到美国能效标准A路径和B路径能效水平,提升13.4%后可与欧洲能效标准水平持平;风冷式机组能效限定值在数值上增加25.4%后可与欧洲能效标准基本持平。本文的工作为后续能效标准GB19577—2015的修订提供了参考依据。 展开更多
关键词 冷水(热泵)机组 IPLV 测试方法对比 能效限值
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深部巷道围岩分区破裂带理论及试验对比研究
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作者 黎林梅 涂一郎 +1 位作者 曾宪任 谢洪阳 《地下空间与工程学报》 CSCD 北大核心 2024年第4期1180-1190,共11页
深部岩体巷道围岩分区破裂化现象形成机制一直存在较大争议。本文从应力波传播的角度对此问题进行了理论探索。以半圆型巷道围岩为对象,建立了巷道围岩应力波传播物理模型。对围岩区域波动方程进行了求解,得到巷道围岩区域应力波幅值分... 深部岩体巷道围岩分区破裂化现象形成机制一直存在较大争议。本文从应力波传播的角度对此问题进行了理论探索。以半圆型巷道围岩为对象,建立了巷道围岩应力波传播物理模型。对围岩区域波动方程进行了求解,得到巷道围岩区域应力波幅值分布呈波动衰减变化特征,创新性地提出了巷道围岩分区破裂带宽度及理论深度。以丁集矿井为对象,对其围岩分区中心半径进行理论计算并与实测结果进行对比研究,大部分分区半径吻合度较好。本文的研究成果对巷道围岩分区破裂化理论有一定的推进作用。 展开更多
关键词 应力波 波动方程 巷道围岩 分区破裂 实测对比
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