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Search Results: 1 - 10 of 207154 matches for " 梁学萍WANG Bing "
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乌鲁木齐市汉族与哈萨克族大学生上前牙色度值的研究
Color Analysis of Hazakhs Younth and Hans People Younth Maxillary Anterior Teeth in Urumqi.

王冰, 周泉,
WANG Bing
, ZHOU Quan, LIANG Xue-ping

- , 2015,
Abstract: 摘要 目的:研究乌鲁木齐市汉族与哈萨克族大学生上前牙天然牙的色度值,为临床制作仿真修复体提供参考。方法:采用数码相机及计算机色度分析系统采集、分析18~22岁乌鲁木齐市汉族与哈萨克族大学生432颗上前牙天然牙的色度值。结果:乌鲁木齐市18~22岁汉族青年及哈萨克族青年的上前牙色度值均从中切牙向尖牙方向均呈现明度逐渐降低,组间比较均P<0.05。彩度值组间比较均逐渐增大(P<0.05)。中切牙中汉族青年亮度值高于哈萨克族青年,彩度值低于哈萨克族青年(P<0.017)。侧切牙中汉族青年亮度值及彩度值均小于哈萨克族青年(P<0.017)。尖牙中汉族青年的亮度值及彩度值均小于哈萨克族青年(P<0.017)。结论:乌鲁木齐市18~22岁汉族及哈萨克族大学生的上前牙色度值存在差异。本实验所得到的结果,有助于使口腔修复材料的光学特性与天然牙更匹配
Fast PDA Multiuser-Detection Algorithm in SDMA System
空分多址系统中的快速PDA算法

Wang Bing,Zhao Yu-ping,Zou Li,Liang Qing-lin,
王兵
,赵玉,邹黎,庆林

电子与信息学报 , 2004,
Abstract: Compared with optimal maximum-likelihood multiuser detection algorithm (MUD) in Space Division Multiuser Access (SDMA) system, probabilistic data association (PDA) algorithm is a near-optimal MUD with low complexity. This paper analyzes the relation between error judging and estimated likely-probability in the 1st iteration of PDA, then proposed the fast PDA which correcting the judging output in the 1st iteration of PDA with Euclidean distance factor. Fast PDA reduces complexity of PDA through eliminating its iterations. Simulation results show that BER of fast PDA is very close to PDA with iterations.
A Novel Unitary Space-Time Modulation
一种新的酉空时调制

Zou Li,Zhao Yu-ping,Wang Bing,Xiang Hai-ge,Liang Qing-lin,
邹黎
,赵玉,王兵,项海格,庆林

电子与信息学报 , 2004,
Abstract: In order to improve the spectral efficiency, this paper proposes a new framework for designing a modulation consisting of more than one modulation method. The new modulation method is able to provide better spectral efficiency while preserving the merits of Unitary Space-Time Modulation (USTM), such as low error rate and demodulation simplicity. The necessary condition for this set of modulations is presented and several different options satisfying the condition are given. Finally a novel modulation called Differential Phase Unitary Space-Time Modulation (DPUSTM) is designed as a special case. DPUSTM, which consists of USTM and Differential Phase-Shift Keying (DPSK) modulation, is not only easier to improve the spectral efficiency than USTM, but also simpler to demodulate. The novel modulation can achieve low bit error rate as UST signals and be exploited in multi-rate data communication. The simulation results not only verify the theoretical analysis, but also show that DPUSTM provides a better performance than USTM and DSTM.
Effects of fertilization on soil fertility indices and yield of dry-land peanut
施肥对旱地花生主要土壤肥力指标及产量的影响

WANG Caibin,ZHENG Yaping,LIANG Xiaoyan,WANG Jianguo,ZHENG Yongmei,SUN Xuewu,FENG Hao,WU Zhengfeng,SUN Xiushan,
王才斌
,郑亚,晓艳,王建国,郑永美,,冯昊,吴正峰,孙秀山

生态学报 , 2013,
Abstract: 大田条件下,研究了纯无机肥及不同用量有机-无机配施对旱地砂壤土花生土壤微生物种群及数量、土壤主要酶活性、土壤呼吸速率及产量的影响,结果表明:(1)土壤中细菌、放线菌和真菌数量随有机无机肥配施数量的增加而增加;单施无机复合肥对微生物数量的增加不明显,中量有机无机肥配施比单纯施中量无机肥处理的细菌、放线菌和真菌数量全生育期平均值分别提高114.9%、49.0%和29.0%。(2)施肥可以显著提高土壤脲酶、蔗糖酶、酸性磷酸酶、过氧化氢酶活性及土壤呼吸速率,其中有机无机中、高量配施显著高于其他处理,中量纯无机肥(农民常规施肥)相近于或低于(尤其在生育后期)低量有机无机肥配施;施肥对土壤过氧化氢酶活性的影响小于其余3种酶。(3)不同类群土壤微生物数量、土壤主要酶活性及土壤呼吸作用关系密切,相互间相关系数均达到极显著水平。(4)有机无机中、高量配施花生产量显著高于其他处理,中量无机肥加中量有机肥比中量纯无机肥增产14.0%,表明在砂壤土上施用有机肥,其对土壤肥力提高的增产作用远远大于其本身所含花生生育所需营养直接供应作用。(5)兼顾土壤肥力和花生产量,肥力中等的砂壤土,可采用中量有机无机肥混配施用。
考虑横向预应力效应的钢-混组合梁桥PBL剪力键试验研究
Experimental Study on PBL Shear Connectors of Steel-Concrete Composite Bridge Considering Transverse Prestressing

祝兵,
ZHU Bing
, WANG Xuewei

- , 2016, DOI: 10.3969/j.issn.0258-2724.2016.04.004
Abstract: 为研究钢-混组合梁桥PBL剪力键的抗剪承载能力及其影响因素,以兰州小砂沟大桥为工程背景,设计3类13组共33个试件,采用推出试验的方法进行试验研究,对比分析了PBL剪力键的破坏形态、破坏机理以及抗剪承载能力的影响因素,提出了考虑横向预应力效应的PBL剪力键抗剪承载能力的计算公式.研究结果表明贯穿钢筋直径、钢板开孔孔径以及钢板厚度的增加均能有效提高PBL剪力键的抗剪承载能力;横向预拉应力的存在促进了混凝土的开裂,使得混凝土、钢板及贯穿钢筋的强度和刚度无法得到充分发挥,从而降低了PBL剪力键的承载能力,对单孔抗剪承载能力降低可达10%;横向预压应力的约束作用延缓了混凝土的开裂,使得混凝土、钢板及贯穿钢筋的强度和刚度得到充分发挥,提高了PBL剪力键的承载能力,对单孔抗剪承载能力提高可达20%;考虑横向预应力效应的公式计算结果与试验结果吻合较好.
: In order to study the shear capacity and its influencing factors of PBL shear connectors for steel-concrete composite girder bridges, 33 specimens in 13 groups of three types were designed for push-out tests conducted in Xiaoshagou Bridge in Lanzhou, China. The failure modes, failure mechanisms, and influencing factors of shear capacity of these PBL shear connectors were analyzed comparatively. On this basis, a shear capacity calculation formula for PBL shear connectors considering the transverse prestressing effect was proposed. The results show that the shear capacity of PBL shear connectors could be effectively increased by increase of transverse rebar diameter, perforated rib diameter, and perforated rib thickness. The existence of transverse pretension stress accelerated the cracking of concrete, causing the strength and stiffness of concrete, perforated plate, and reinforcing rebars unable to exert their effect fully. As a result, the shear capacity of PBL shear connectors were reduced by about 10%. In addition, the constraint effect of transverse stress improved the strength and stiffness of concrete and delayed the concrete cracking, bringing the strength and stiffness of concrete, perforated plate, and reinforcing rebars into full play, and resulting in an significant improvement (20%) in the shear capacity of PBL shear connectors. The calculated results from the proposed formula close to the test results verified its effectiveness
基于专利信息的国内外钢铁产业技术创新能力评价
Technology Innovation Capacity Assessment for Steel and Iron Enterprises or Research Institutions: Based on the Data of Patents

晓捷,王兵
LIANG Xiaojie
,WANG Bing

- , 2017,
Abstract: 摘要 在我国钢铁行业面临战略转型的大背景下,钢铁产业技术创新能力的提升至关重要。基于专利指标,建立了由创新方向、创新效率、创新质量三方面14个指标组成的钢铁产业创新能力评价体系,并采用密切值法对钢铁行业优势申请人的创新能力进行评价,从专利特征分析的角度对国内外钢铁产业的技术创新能力进行了实证研究和对比分析。研究发现,我国钢铁产业的专利数量增长很快,但与其他国家钢铁行业相比,我国钢铁产业高质量技术创新成果相对较少,创新活动后劲相对不足,且创新方向较为单一,合作力度较小,合作度有待进一步提升
铬革渣资源化处理研究(Ⅳ)提取蛋白质和铬盐后残渣的利用
蒋挺大,张春,
环境科学 , 1991,
Abstract: 铬革渣提取蛋白质和铬盐后的残渣,可以加工成有机肥,经在一品红、花叶假连翘和富贵竹三种花卉上与四种市售花肥比较,试用结果表明是一种高效和长效有机肥.从而使铬革渣全部被转化成有用之物,使整个处理过程实现零排放.
Abusive Supervision and Counterproductive Work Behavior: Moderating Effect of Negative Affectivity  [PDF]
Feng An, Bing Wang
Journal of Service Science and Management (JSSM) , 2016, DOI: 10.4236/jssm.2016.91009
Abstract: In this study, the methods of literature study and questionnaire research are used with foreign mature scale analysis technique. Employees in manufacturing enterprises are surveyed for data collection. Based on 321 valid questionnaires with correlation analysis and linear regression method, effective data collection is achieved and aimed to explore the relationship among abusive supervision, counterproductive work behavior and negative affectivity of the employees. The results showed: abusive supervision and counterproductive work behavior of employees has a significant positive correlation; negative affectivity of employees is an intermediary variable. The significance of the survey in practice is to encourage leaders of enterprises to improve their strategy of management and pay more attention to the mental health of the employees.
Research on Java RMI-based Distributed WebGIS Model
基于Java RMI的分布式WebGIS模型研究

RUAN Ping,WANG Hua,GUO Bing-qing,
,王华,郭炳庆

计算机应用研究 , 2005,
Abstract: WebGIS is current GIS developing hotspot.This article based on the distributed characteristics o WebGIS,a model of distributed WebGIS is put forword after analyzed the trait and advantage of Java RMI.Some relevant conception such as geospatial data model and compoment registration server and implement technology are introduced.
Technology of Biodesulfurization from Flue Gases
微生物脱硫工艺条件的研究

Wang Xiaoyan,Zhang Yongkui,Liang Bing,
王小燕
,张永奎,

环境科学 , 2003,
Abstract: The desufurization in dilute sulfuric acid solution, acidic ferric solution, and microbial solution (Thiobacillus ferrooxidans) was studied in this paper. The concentration of ferric, pH value and time all affect the rate of desulfurization. The experimental results showed that in dilute sulfuric acid solution the absorption of SO2 was a physical absorption. In acidic ferric solution, the ion of ferric can not only catalyze but also oxidize SO2. The effects of desulfurization became obvious along with high concentration of ferric and pH value. Desulfurization rate was up to 90% when pH value was 2.0 and the concentration of ferric was 1.5 g/L. In microbial solution, the effects were also influenced by the concentration of ferric and pH value. Thiobacillus ferrooxidans had an ability of oxiding the ion of ferrous and S(IV). The results of desulfurization was the best at the concentration of ferric 1.5 g/L and pH 2.0.
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