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Search Results: 1 - 10 of 35002 matches for " 武 鑫 "
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我国中小企业的新产品开发前期过程探讨
,干静
科技进步与对策 , 2006,
Abstract: 中小企业要取得生存和发展的优势就必须快速开发成功的新产品,这是企业竞争战略中的关键部分。基于我国中小企业的特点,探讨中小企业如何管理新产品开发前期,提出了新产品开发前期的主要内容和各阶段的开发策略,以提高中小企业新产品开发项目的成功率。最后以“迷你洗衣机”的开发前期为例分析说明上述方法应用的有效性。新产品开发前期中小企业产品开发策略
A356合金化学镀Ni-P工艺及其性能研究
,邱星
腐蚀科学与防护技术 , 2007,
Abstract: 用直接化学镀Ni-P和先电镀Ni后化学镀Ni-P两种方法在A356合金表面施加镀层.利用恒电位仪、盐雾实验、扫描电镜和显微硬度计等分析测试手段研究了两种工艺处理后镀层的性能.结果表明两种不同工艺得到的镀Ni-P样品均具有优异的耐蚀性和较高的硬度,对Al合金基体均有很好的保护作用;其中带镀Ni中间层的化学镀Ni-P层更致密,具有更好的耐蚀性和硬度.
混凝土构件缺陷超声无损检测的研究
傅竹,
岩土力学 , 2007,
Abstract: 对混凝土构件进行超声无损检测,超声波的振幅参数对混凝土构件中的缺陷(裂缝)最敏感,在耦合良好和测试条件基本一致时,振幅值的大幅衰减可作为判断混凝土构件存在缺陷的主要依据。超声波的速度参数对微小裂隙不敏感,缺陷较大会引起速度值的显著下降;频率参数用于检测混凝土构件缺陷不够敏感;对混凝土构件缺陷进行超声检测,速度变化和频率变化只能作为参考因素。超声波通过裂缝与未过裂缝,波形存在明显差异,通过裂缝后,有时会出现很大周期的波列,可作为判断缺陷的重要依据。综合分析超声波运动学和动力学各参数的变化,能够提高检测的准确性。
脱氮硫杆菌对废水中硫氮的脱除
,赵晋忠
应用与环境生物学报 , 2013, DOI: 10.3724/SP.J.1145.2013.00175
Abstract: 为脱除废水中高浓度的硫氮,首先对脱氮硫杆菌(thiobacillusdenitrificans)的生长曲线和驯化期间营养液ph的变化进行了测定,确定了脱氮硫杆菌合适的使用条件.然后检测了接菌后废水中的s2-浓度控制在400mg/l时合适的硫氮比以及脱氮硫杆菌对no3-的去除率.结果表明,处理富含硫氮的废水时,当硫氮比控制在5:3、s2-浓度控制在400mg/l时,脱氮硫杆菌对no3-的去除率可达63.19%,同时s2-转化成硫酸盐或可回收的单质硫,使废水的硫氮污染得到了有效的控制.图6表1参16
转型经济中民营企业成长的中长期激励机制研究——华为推行TUP的产权制度创新实践与理论启示
齐宝,亚军
- , 2018,
Abstract: 文章以华为公司为研究对象,运用纵向单案例研究与扎根理论方法论,对创业期、发展期和成熟期员工持股计划的特征进行归纳,并分析TUP的内涵。从这一实践出发,文章探究华为(企业)与员工(奋斗者)的良性互动模式,讨论价值创造、价值评价与价值分配的良性循环机制在人力资本管理中的重要作用。TUP既是一种产权制度,也是一种短期激励和中长期激励相结合的企业创新实践机制。文章对产权的定义、激励的分类进行文献梳理,在此基础上提出产权是利益相关者支配有价值利益的一束权利。这一定义突破传统将“物”作为产权客体的局限,并将产权主体扩展到利益相关者。进一步,文章研究产权结构、公司治理与企业绩效的关系。从利益相关者理论出发,合伙型员工是内部的核心利益相关者,通过与企业良性互动,双方形成共有、共创、共治、共享的利益共同体。最后,文章从华为推行TUP的产权制度创新实践出发,提出以奋斗者为本的共有制企业组织的理论启示,并对利用“高学历”人力资本获取可持续竞争优势进行了讨论。
Abstract:Aimed at Huawei practice, the article summarizes the characteristics of Employee Stock Ownership Plan (ESOP) in different stages of Huawei development and discusses the content of Time Unit Plan(TUP), conducting the longitudinal case study and grounded theory. Through the benign interaction between the enterprise and the employees, the mechanism among value creation, evaluation and distribution plays a significant role in the human resource management process. TUP is not only a property right, but also a mid-long term motivation mechanism. Based on the literature about the property definition and the motivation classification, this article proposes a new definition for the enterprise property, which is the right that the stakeholders dominate the valuable benefits. The innovative definition breakthroughs the limitation of the traditional focus on the “things.” Further, this article discusses the relations between the property rights structure, corporate governance and performance. Employees are core stakeholders in the enterprise and they turn into the interest community with the relation of common possession, common value-creation, common stakeholder-governance, common benefit-share. Finally, from the perspective of Huawei TUP practice, this article reveals a theoretical enlightenment of constructing an organization based on the common ownership.
9位含空穴型材料的芳基取代芴及其聚合物的合成与表征
,李冬至,永刚
功能高分子学报 , 2011,
Abstract: 以2,7-二溴芴酮为原料,在芴的9位引入三苯胺等芳香取代基代替烷基取代基,增加9位的稳定性。用该新单体合成了线性聚合物,同时用AB+AB2的方法合成了不同支化度的超支化聚合物。合成的聚合物具有良好的热稳定性和发光稳定性,热分解温度在400 °C以上;聚合物的薄膜在空气中200 °C加热2 h后没有出现绿光带发射,其发光稳定性与烷基聚芴相比得到明显提高。DSC结果显示,线性聚合物和超支化聚合物在300 °C以内没有明显的相转变,其稳定的无定形态,有利于提高发光效率。
Genetic variation and population evolutionary history of the giant mottled eel (Anguillia marmorata) based on the mitochondrial D-loop gene
基于线粒体D-loop 基因探讨花鳗鲡的群体遗传多样性及其种群进化历史

丁 旭,,尹绍
海洋科学 , 2012,
Abstract: The population genetic structures of the giant mottled eel from Hainan and Philippines were investigated by sequencing the mitochondrial control region (D-loop) gene for the first time. The average contents of A, T, G and C in the control region were 39.8%, 28.3%, 12.4% and 19.4%, respectively. There were 73 polymorphisms sites from the sequenced samples revealing 18 haplotypes. By calculating the haplotype diversity (Hd), nucleotide diversity (Pi) and average number of pairwise nucleotide difference (k), the Philippines population exhibited higher level of variability (Hd=1.000, Pi=0.26728, k=271.821) than the Hainan population (Hd=0.982, Pi=0.21577, k=219.655 and the genetic distance (P) was 0.3203 between two populations. By constructing the molecular phylogenetic tree with the method of NJ, the two geographic populations of the giant mottled eel did not show significant genetic difference. Besides, neutrality tests indicated a possible stable population in the population history of the giant mottled eel.
甲基羧乙基二聚氧乙烯基硅烷的合成与性能
Synthesis and Performance of Methyl Carboxyethyl Dipolyoxyetheylene Silicane
 [PDF]

傅宇, 江珊珊, 沈海民, 宏科, 史鸿
Studies in Synthetic Chemistry (SSC) , 2015, DOI: 10.12677/SSC.2015.32007
Abstract:
研究了甲基羧乙基二聚氧乙烯基硅烷(I)的合成方法和乳化性能。甲基二氯硅烷(II)和丙烯酸(III)发生硅氢加成反应后,不经分离,直接以聚氧乙烯600醇解反应得到I,其化学结构经红外光谱分析表征。考察了原料配比、温度和时间对硅氢加成反应转化率的影响。在优化工艺条件下:n(II):n(III) = 1:1.2,0.002 g/mL氯铂酸异丙醇溶液0.125 mL,60 mL THF,0.02 mol II在55℃反应20 h,硅氢加成反应转化率达到75.3%。0.1% I水溶液的表面张力为37.0 mN/m,I用于45%石蜡乳液的制备,可有效提高乳液的分散性和离心稳定性。
Synthesis and performance of methyl carboxyethyl dipolyoxyetheylene silicane (I) were investi-gated. Methyl carboxyethyl dipolyoxyetheylene silicane (I) was synthesized by addition of Si-H from methyldichlorosilae(II) and acrylic acid(III), and then by alcoholysis with polyoxy-ethylene- 600. The final product I was characterized by means of FT-IR. The effects of ratio of II and III, temperature and time on the conversion of Si-H addition were investigated respectively. In the optimal process conditions: n(II):n(III) = 1:1. 2, 0.125 mL 0.002 g/L H2PtCl6/i-PrOH solution, 0.02 mol II reacted at 55?C for 20 h, and the conversion of Si-H addition was 75.3%. The surface tension of 0.1% aqueous solution of I is 37.0 mN/m. I was used in preparation of 45% paraffin emulsion and promoted effectively its dispersivity and centrifugal stability.
高强度钢板热成形温度场数值模拟分析
姜大,文华,,
工程力学 , 2013, DOI: 10.6052/j.issn.1000-4750.2011.06.0369
Abstract: 高强度钢板热成形过程中,板料和模具于接触表面具有强烈的热传导现象。温度的不断变化将直接影响热成形钢板的最终成形性能和水冷模具的寿命。基于此,该文建立了板料与水冷模具间相互耦合的接触表面热传导模型,并运用传热学和一般壳体温度场有限元分析理论,构建了计算热成形过程板料和模具接触的温度分布场。通过U形件热成形数值模拟与实验结果的一致性对比,验证了建立的热传导模型的有效性。
成山头海域潮流能资源可开发量评估
,,韩林生
海洋与湖沼 , 2013, DOI: 10.11693/hyhz201303005005
Abstract: 针对潮流能资源较丰富的成山头外海域, 利用FVCOM数值模式, 在良好模拟该海域潮流场的基础上, 运用能量耗散原理, 对该海域的潮流能资源可开发量进行了评估。结果表明, 在转换装置的拖拽系数为0.07时, 面积为27km2的成山头近岸海域的可开发潮流能资源约为17.9MW, 其中大潮期间的可开发量高达37.7MW, 而小潮期间则为7.3MW。在此条件下, 该海域大潮期间涨急和落急时刻的流速分别减小了40%和38%, 但发电装置对潮汐的影响较小, 在成山头顶端的高潮潮位仅下降了4cm。
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