EXTENDED CESRO OPERATORS ON THE BLOCH SPACE IN THE UNIT BALL OF C^n

The paper defines an extended Cesaro operator Tg with holomorphic symbol g in the unit ball B of Cn asWhere is the radial derivative of g. In this paper, the author characterizes g for which Tg is bounded (or compact) on the Bloch space B and the little Bloch space Bo-

EXTENDED CESRO OPERATORS AND MULTIPLIERS ON BMOA

In this article, we characterize the boundedness and compactness of extended Cesaro operators on the spaces BMOA by the Carleson measures in the unit ball. Mea while, we study the pointwise multipliers on BMOA.

Essential Norm of Extended Cesàro Operators between Bloch-type Spaces

The Bloch-type space Bω consists of all functions f ∈ H(B) for which||f||Bω=sup/z∈Bω(z)|▽f(z)|< ∞.Let T be the extended Ces`aro operator with holomorphic symbol . The essential norm of T as an operator from Bω to Bμ is denoted by ||T||e,B ω→Bμ . The purpose of this paper is to prove that, for ω, μ normal and ∈H(B)||T||e,B ω→Bμ■ lim sup|z|→1 μ(z)|■ (z)|∫ |z| 0 dt ω(t) .

Extended Cesaro Operator between Bloch-type Spaces

We characterize the symbol  for which the induced extended Cesàro operator T: Bω→ Bμ(respectively, Bω,0 → Bμ,0) is bounded or compact, where  is a given holomorphic function on the unit disc D, ω and μ both are normal functions on [0,1).

Mechanisms of Extending Operation Region in the HL-1M Tokamak

Stable operating region in the HL-1M tokamak has been extended by means of wall conditioning, core fuelling and current control techniques. The mechanisms of the extension are analyzed in this paper. Lithiumization diminishes the impurities and hydrogen recycling to the lowest level. After lithiumization a high density up to 7×1019 m-3 was obtained easily by strong gas puffing with ordinary ohmic discharge alone. More attractively we found that metal Li-coating exhibited the effects of wall stabilization. The low qα limit with higher density was extended by a factor of 1.5-2 in comparison with that for boronization, and 1.2 for siliconization. Siliconization not only extended stable operating region significantly by itself, but also provided a good target plasma for other experiments of raising density limit. Core fuelling schemes are favourable especially for siliconized wall with a higher level of medium-Z impurity (Z = 14). After siliconization the maximum density near to 1020 m-3 was achieved by a combination of supersonic molecule beam injection and multipellet injection. The new defined slope of Hugill limit illustrating more clearly the situation under low qα and high ne discharges was created to indicate the new region extended by combining IP ramp-up with core fuelling. The slope with a large Murakami coefficient increased by a factor of 50-60 %.

Dual-Mode Terahertz Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam

A terahertz dual-mode extended interaction oscillator (EIO) driven by a pseudospark-sourced sheet electron beam (SEB) was presented.The major advantages of the newly developed circuit include 1) high-density SEB interacting with the TM_(11) and TM_(31) modes,respectively,and 2) high output power of over 1 kW at the subterahertz frequency range.Two different types of 2π modes and their output characteristics were studied,and the circuit was optimized to ensure efficient outputs of two standing-wave modes.The three-dimensional (3D) particle-in-cell (PIC) simulation predicts the maximum output power of 1.3 kW with the 3-dB bandwidth of ~0.5 GHz at 303 GHz when operating at the TM_(11)mode,and 3.18 kW with the 3-dB bandwidth of ~0.85 GHz at 364 GHz when operating at the TM_(31)mode.

增程式电动汽车发动机的多工作点控制策略

为了研究不同的发动机多工作点控制策略对整车燃油经济性的影响,以某增程式电动汽车为研究对象,在满足整车动力性前提下,设计了发动机三工作点和五工作点控制策略。在不同循环工况下,对比分析了2种控制策略。仿真结果表明,三工作点和五工作点控制策略能够满足整车动力性要求,且三工作点控制策略的燃油经济性更优。

WC-OWA算子的拓展及其在风险型多属性决策中的应用

研究WC-OWA算子的拓展形式,得到了一些新的数据集成算子,并对其性质进行了研究。在此基础上,探讨属性值以区间形式给出的风险型多属性决策的方法,并用实例进行分析说明该方法的可行性。

增程式混合动力汽车高速运行经济性研究

为了评估增程式混合动力汽车在高速工况下的燃油经济性,本文建立某MPV的整车动力学模型和关键零部件模型,并提出相应的能量管理策略。试验结果表明,基于所提能量直驱策略的增程式混合动力汽车的高速燃油经济性显著提升,解决了增程式混合动力高速燃油经济性劣于燃油车的行业难题。

增程式动力系统发动机运行策略优化研究

为进一步明晰自由度高的增程器系统中发动机运行策略对增程式电动汽车经济性的影响,明确发动机性能优化对整车性能提升的潜力,基于GT-SUITE仿真平台,结合能量流详细分析了发动机线工况和点工况运行策略对整车经济性的影响,并对比分析了发动机性能优化前后的整车性能。结果表明,发动机以点工况运行得到的整车基于中国轻型汽车行驶工况(China light vehicle test cycle, CLTC)油耗更优,相比于线工况下整车CLTC油耗,基于点工况整车CLTC油耗可降低至0.038 24 L/km。以增程器系统最优效率点作为发动机工作点的策略相对单一,不利于整车油耗的改善,相比于最佳值恶化0.81%。性能优化后的发动机在高效区可实现更大的功率输出,整车CLTC油耗均得到改善,最佳值从0.038 24 L/km降低至0.036 64 L/km。

联合核稀疏表示和增强字典的SAR目标识别方法

为提高合成孔径雷达(SAR)图像目标识别性能,以传统稀疏表示分类(SRC)为基础,提出联合核稀疏表示分类(KSRC)和增强字典的方法。KSRC在SRC的基础上引入非线性核函数,从而提升分类器对于非线性数据关系的表征能力。增强字典在原始训练样本的基础上,通过噪声添加和部分遮挡扩展原始字典,提升其对典型扩展操作条件的适应能力。同时,增强字典在KSRC的作用下,可以进一步提升对其他相关扩展操作条件的覆盖程度,从而提升识别方法对于多类扩展操作条件的有效性。以MSTAR数据集为基础开展实验,设置了标准操作条件以及噪声干扰、部分遮挡、型号差异等扩展操作条件,实验结果显示了本文方法的优势性能。

渤海边际油田延长测试新模式设计与应用

为进一步评价产能,落实地质储量规模及潜山底水水体大小,降低油藏开发风险,在渤海某油田勘探评价井的基础上采用延长测试的方式进行勘探开发一体化评价。结合该井的地理位置及作业特点,创新使用“作业支持平台+环保船转运”的模式开展施工。在作业支持平台上搭建延长测试生产流程,并设置临时储油装置,利用外输软管将原油外输至环保船上,多条环保船轮流转运至生产平台,在摸清油藏动态生产规律的同时,回收作业成本。该模式流程简单、灵活快捷、成本低,是渤海边际油田延长测试作业模式的又一次探索和创新,具有借鉴意义。

延续护理对宫颈癌根治术患者生活质量和心理情绪的影响观察

目的探讨延续护理对宫颈癌根治术患者生活质量和心理情绪的影响。方法选取84例宫颈癌根治术患者,根据随机数字表法分为两组,每组42例。对照组采用常规护理,观察组采用延续护理,比较两组护理效果。结果与对照组对比,观察组的康复情况更好(P<0.05)。观察组的汉密尔顿焦虑量表(HAMA)、抑郁自评量表(SDS)评分更低(P<0.05)。与对照组对比,护理后观察组的生活质量更高(P<0.05)。结论延续护理对宫颈癌根治术患者的干预效果更加显著,可减少并发症发生率,改善心理情绪,提高生活质量,值得临床推广。

Bloch-type spaces and extended Cesàro operators in the unit ball of a complex Banach space

Let B be the unit ball of a complex Banach space X. In this paper, we generalize the Bloch-type spaces and the little Bloch-type spaces to the open unit ball B by using the radial derivative. Next, we de?ne an extended Ces`aro operator T_φ with the holomorphic symbol φ and characterize those φ for which T_φ is bounded between the Bloch-type spaces and the little Bloch-type spaces. We also characterize those φ for which T_φ is compact between the Bloch-type spaces and the little Bloch-type spaces under some additional assumption on the symbol φ. When B is the open unit ball of a ?nite dimensional complex Banach space X, this additional assumption is automatically satis?ed.

基于GO法和Extend的装备技术状态评估模型

针对现有的装备使用决策研究难以说明所得评估值代表的物理意义的问题,重新定义了装备技术状态的概念,提出一套基于GO法和Extend的装备技术状态评估的仿真建模方法。从使用者决策需求出发,给出了技术状态的数学表达。采用GO法构建描述功能流程,提出GO模型向Extend仿真模型的转换规则,并利用该规则,将GO模型转换成Extend仿真模型,进行技术状态的仿真评估。分析结果表明:该方法具有可行性,且评估结论对决策者的价值更为直接和有效。

The Local Spectral Properties of Extended Hamilton Operators

In this paper, we introduce the class of extended Hamilton operators and study various properties of this class. We examine the decomposability of extended Hamilton operators. In addition, we prove that an extended Hamilton operator with property （δ） is subscalar. Finally, we consider Weyl type theorems of this class.

Extended Cesàro Operators between Different Bergman Spaces in the Ball

In this paper,we obtain the characterizations on μ for（p,q）-φCarleson measure,and discuss the boundedness（and compactness） of the extended Cesaro operators T g between different weighted Bergman spaces as some application.

基于数据驱动的高速列车速度复合控制研究

针对高速列车在外部干扰下的速度控制问题,本文提出基于Koopman算子的高速列车高维线性模型的建模方法,并设计一种结合扩张状态观测器(ESO)与基于Koopman算子的模型预测控制(K-MPC)的复合控制器(ESO-K-MPC)。利用扩展动态模式分解算法来近似无限维线性Koopman算子,建立具有动态非线性特性的高速列车动力学高维线性模型;引入模型预测控制,设计扩张状态观测器,对系统总扰动进行估计与补偿,构建基于ESO-K-MPC的高速列车速度控制系统,再设计控制器与控制算法;结合CRH3列车参数和郑西高铁华山北站—西安北站实际线路数据,分别在没有扰动和白噪声干扰下对设计的控制方法与算法进行仿真研究。仿真结果表明:基于Koopman的高速列车建模对位移与速度的预测精度相比于线性状态空间模型分别提高了83.86%与87.40%;ESO-K-MPC可以准确估计与补偿高速列车运行中受到的干扰,控制输出曲线与期望曲线几乎重叠,实现了列车运行期望曲线的高精度跟踪。

增程发动机冷启动及稳定运行的控制策略研究

建立了电动汽车增程器系统的模块化控制仿真平台。将GT-Power中的接口模块与Simulink模块建立耦合模型,进一步通过Matlab/Simulink建立转速控制和空燃比控制模型,研究了增程发动机冷起动及稳定运行时转速和空燃比的控制策略,对比了传统PID控制方法以及模糊PID控制方法。结果表明,模糊PID控制在目标转速以及空燃比的响应速度和误差方面均优于传统PID控制;稳定运行时,增程发动机转速保持在最佳工况点3000 r/min附近,实现发动机高效节能。