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Search Results: 1 - 10 of 23032 matches for " 潘盼 "
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向本贵小说中粗俗语的运用

湖南工业大学学报(社会科学版) , 2008,
Abstract: 大量使用粗俗语是向本贵小说中突出的用语现象。向本贵小说中的粗俗语具有丰富的文化含蕴, 对 其塑造人物形象具有十分独特的作用。
试析持有至到期投资与可供出售金融资产重分类的会计处理
,华(教授)
财会月刊 , 2009,
Abstract:   在企业会计准则中,持有至到期投资与可供出售金融资产作为两类金融资产,采用了不同的计量属性,在资产负债表中单独列示。本文对由于执行企业会计准则和企业本身持有目的的变化导致的持有至到期投资与可供出售金融资产重分类的会计处理进行探讨。  【关键词】持有至到期投资可供出售金融资产重分类会计处理  《企业会计准则第22号——金融工具确认和计量》规定,企业应当结合自身业务特点和风险管理要求,将取得的金融资产在初始确认时分为以下几类:①以公允价值计量且其变动计入当期损益的金融资产;②持有至到期投资;③贷款和应收款项;④可供出售金融资产。金融资产的分类一旦确定,不得随意改变。企业在初始确认时将某金融资产划分为以公允价值计量且其变动计入当期损益的金融资产后,不能重分类为其他类金融资产;其他类金融资产也不能重分类为以公允价值计量且其变动计入当期损益的金融资产。
水平轴风力机叶片最优体型设计
,,,,,
工程力学 , 2013, DOI: 10.6052/j.issn.1000-4750.2011.09.0579
Abstract: 从降低风力机成本及提高风力机运行可靠性的角度,建立以最小的叶片质量获得最大的年发电量两个目标函数,以叶片体型参数及运行参数等关键参数为设计变量,以叶片的强度为主要约束条件的多目标优化设计数学模型,采用Pareto遗传算法对某1.5MW风力机叶片进行最优体型设计研究。与原设计叶片相比,最优体型设计方案提高了风力机的年发电量、减轻了叶片质量,说明优化设计模型合理有效。
发电系统可靠性随负荷率变化规律研究
Study on the Power System Reliability Variation with Load Rate
 [PDF]


Smart Grid (SG) , 2014, DOI: 10.12677/SG.2014.46034
Abstract:
基于削峰填谷和等比例调整等负荷率调整策略,提出调整策略对应的负荷调整算法;基于此,建立系统可靠性指标随系统负荷率变化的样条插值模型。两种负荷率调整策略均针对给定时段(如一年或一天)内,在满足负荷电能需求下,调整负荷谷峰差及负荷曲线,即在系统平均负荷不变的前提下改变系统最大负荷及其他时段负荷,以达到提高负荷率的目的。应用IEEE-RTS 79系统验证了模型的有效性。算例表明:随着系统负荷率的提高,系统可靠性呈非线性上升规律,即提高系统负荷率可提高系统可靠性;但是,当负荷率提高到一定程度时,系统可靠性的提高会出现明显的饱和现象。
Load rate adjustment strategies based on reducing peak and filling valley and the proportion of load shifting are presented, and the algorithm for the load adjustment is also presented. The rela-tionship between the system reliability and the load rate is modeled using the spline interpolation method. Both the two load rate adjustment strategies can adjust the peak-valley difference and the load curve satisfying load demand in a given period of time; that is, the maximum load and the load in other times of the system are changed with the same average load in order to improve load rate. The validity of the model is verified using the IEEE-RTS 79 system. Results indicate that with the increase of the system load rate, the system reliability increases in a non-linear way, which also means the reliability performance of the system can be improved by increasing the system load rate; however, when the loading rate increases to a certain extent, saturation will arise in the sys-tem reliability.
发输电组合系统可靠性随系统负荷变化的规律研究
Study on the Reliability Variation of Generation and Transmission System with Load Rate
 [PDF]


Smart Grid (SG) , 2014, DOI: 10.12677/SG.2014.46033
Abstract:
本文分析了发输电组合系统主要可靠性指标,如:LOLP、LOLF和EENS,随系统负荷的变化规律,以拟合的规律曲线连续、光滑等为目标,建立系统可靠性指标随系统负荷变化的三次样条插值模型。通过插值边界条件、插值点导数等信息,即可求解该模型。结合该模型,可建立电力系统可靠性预测估计模型,以避免负荷变化时可靠性的重复评估。将该模型应用于RBTS测试系统。算例表明:系统可靠性随负荷呈非线性的变化规律;当负荷变化时,可直接应用该模型预测估计系统可靠性,其平均绝对百分误差约2.0%。
The rules between the reliability indices of generation and transmission system, such as: LOLP (loss of load probability), LOLF (loss of load frequency), EENS (expected energy not supplied), and the system load are analyzed. The relationship model between the power system reliability and system load rate is modeled using cubic spline interpolation, and the model can be solved according to the interpolation boundary conditions, the interpolation points and derivative information. Therefore, a fast evaluation technique based on the proposed model for the reliability of power systems can be obtained, which can avoid the duplication of reliability evaluation with multi-load levels. The proposed model is applied to the RBTS system. Results indicate that the relationship between the system reliability and load rate is non-linear variation. The average error for the evaluation on the reliability in these cases is about 2.0% when the load changes.
BDS/GPS精密单点定位收敛时间与定位精度的比较
张小红,左翔,,宇明
测绘学报 , 2015, DOI: 10.11947/j.AGCS.2015.20130771
Abstract: 采用武汉大学卫星导航定位技术研究中心发布的北斗精密卫星轨道和钟差,在TriP2.0软件的基础上实现了BDSPPP定位算法,并利用大量实测数据进行了BDS/GPS静态PPP和动态PPP浮点解试验.结果表明,BDS静态PPP的收敛时间约为80min,动态PPP的收敛时间为100min;对于3h的观测数据,静态PPP收敛后定位精度优于5cm,动态PPP收敛后水平方向优于8cm,高程方向约12cm;与GPSPPP类似,东分量上定位精度较北分量稍差.当前由于BDS的全球跟踪站有限,精密轨道和钟差精度不如GPS,因此BDSPPP的收敛时间较GPS长,但收敛后可实现厘米至分米级的绝对定位.
改革开放30年来中国服装文化心理模式的变迁
孙涛,吴志明,,杨旭
纺织学报 , 2011,
Abstract: 改革开放,推动了中国服装文化的近三千多年来从未有过的深刻变革,即服装文化心理模式的变迁。中国传统服装文化心理中有根深蒂固的身份认同模式,即把个人的服装与其社会身份紧密结合,个人着装行为要由群体和社会加以规范。改革开放的30年,中国人就初步实现了服装文化心理进入现代化的两次模式变迁,即由身份认同到身体认同,由身体认同到个性认同。中国服装文化由群体规范的自觉,发展到身体意识的觉醒,进而提升到个体意识的表达,从此开始了服装文化现代化的进程。
晶粒长大抑制剂VC对原位生成WCoB-TiC-Co复相金属陶瓷的影响
徐源源,应君,柯德庆,杨林,
- , 2017, DOI: 10.11951/j.issn.1005-0299.20160173
Abstract: 为细化WCoB-TiC-Co复相金属陶瓷晶粒,改善其组织, 提高其力学性能,以WC、TiB2和Co粉末为主要原材料,采用真空液相原位反应烧结工艺,在1 400 ℃真空烧结炉中制备了WCoB-TiC-Co复相金属陶瓷.利用FE-SEM、EDS和XRD等技术,研究了不同含量的晶粒长大抑制剂VC对WCoB-TiC-Co复相金属陶瓷组织、物相构成、硬度、密度、耐磨性及抗弯强度和断口形貌等性能的影响.结果表明:添加适量的VC能有效细化WCoB-TiC-Co复相金属陶瓷晶粒,使得材料获得更均匀细小的微观组织, 增加材料韧性和断口不平整性, 增强材料抗弯强度,并且提高硬度、密度和耐磨性; 当VC的质量分数增加到0.9%时,金属陶瓷的晶粒平均尺寸可细化到约1.3 μm,硬度随之升高到91.5 HRA,抗弯强度达到794 MPa; 但VC的质量分数继续增加到1.2%、1.5%时,其硬度、密度、耐磨性及抗弯强度均会有所降低.
In order to refine the grain of WCoB-TiC-Co double phase cermet and improve its microstructure and mechanical properties, using WC, TiB2 and Co powders as main raw materials, WCoB-TiC-Co multiphase metal-ceramics were prepared by in-situ liquid-phase reaction sintering at 1 400 ℃ in the vacuum furnace. The effect of contents of VC grain growth inhibitor on microstructure, phase composition, hardness, density, wear resistance, bending strength and the fracture surface of multiphase metal-ceramics were studied by FE-SEM, EDS and XRD. The results show that, with the addition of a proper VC content, the grain growth of WCoB-TiC-Co multiphase metal-ceramics was effectively suppressed, and the toughness, fracture unevenness, bending strength, hardness and wear resistance of the materials were enhanced. When 0.9wt.% VC was added, the average grain size of WCoB-TiC-Co multiphase metal-ceramics was only 1.3 μm, and, the hardness and the bending strength were 91.5 HRA and 794 MPa, respectively. As the content of VC increased from 1.2wt.% to 1.5wt.%, the hardness, density, wear resistance and bending strength of WCoB-TiC-Co multiphase metal-ceramics reduced gradually.
厌氧-好氧生物流化床耦合处理N,N-二甲基乙酰胺废水的研究 Research on N,N-Dimethylacetamide Wastewater Treatments with an Anaerobic-Aerobic Biological Fluidized Bed
卢小,王亮,汪晨曦,志彦
- , 2017,
Abstract: 湿法生产腈纶会产生含N,N-二甲基乙酰胺(DMAC)的废水,如果不加以处理会对环境造成危害。研究采用厌氧-好氧生物流化床耦合处理含DMAC模拟有机废水。废水中DMAC浓度为75.0 mg·L-1,化学需氧量(CODCr)浓度160.5mg·L-1,葡萄糖、氯化铵为外加碳源、氮源,在CODCr/NH4+-N ≤ 2、水力停留时间(HRT)14.9 h条件下处理废水,结果表明:NH4+-N的去除效率在CODCr/NH4+-N值为1时最高,达到81.9%;DMAC的去除效率随着CODCr/NH4+-N值降低而降低,在CODCr/NH4+-N值为2时,去除效率达到81.2%,在CODCr/NH4+-N降到0.5时,DMAC去除效率只有31.3%。当DMAC作为单一底物时,厌氧-好氧生物流化床耦合处理工艺对浓度为100.0 mg·L-1的DMAC废水去除效果较好,最高去除效率达到85.2%,出水水质达到《纺织染整工业水污染物排放标准》(GB4287-2012)的直接排放标准。
与Rab2互作布鲁菌株效应蛋白HSP70的鉴定
崔桂梅 , , 赵玉玺 , 垒昌 , 徐晓晗 , 彭其胜
扬州大学学报(农业与生命科学版) , 2014,
Abstract: ????
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