2008年, 第10卷, 第2期 刊出日期:2024-07-01
    

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  • Zhang Yanzhong
    2008, 10(2): 2-8.
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  • 卢良恕
    2008, 10(2): 4-6.
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    农业科技在现代农业建设的过程中发挥着重要作用。文章介绍了新时期现代农业的内涵、主要特点,指出农业科技创新是现代农业发展的强大支撑,农业科技体制改革是现代农业发展 和服务“三农”的需要。

  • 邓铁涛,郑洪
    2008, 10(2): 7-13.
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    五行学说对中医学有深刻的影响,体现了传统医学重视联系、整体的特点,但五行学说本身有局限性,不能全面地反映事物间的普遍联系。中医以五脏配属五行,吸收了五行学说的精华;又根据脏腑学说的理论,在实践中超越了五行的限制。因此,中医的理论可名为“五脏相关学说”。在中医理论现代化中,可以将五脏之间的影响归纳为促进、抑制和协同3种关系,从多种角度来阐明中医的整体性与联系观。

  • Peng Funan
    2008, 10(2): 9-18.
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  • 孙威,孙晓明
    2008, 10(2): 14-25.
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    采用自主研发的地震应力仪、谐振仪 、倾斜仪和大地电位仪记录到印度洋8.7级大震的地震前兆——孕震物理模型和临震信号, 印度洋8.7级地震前后和8.5级地震前后的地壳受力情况有很大差异,表明 印度洋8.7级地震与8.5级地震的成因有着本质的区别,分析了海啸形成的原因,还发现了在 8.7级地震的孕育过程中有地下物质迁移迹象。

  • Zhang Jinrong,Luo Zhifu
    2008, 10(2): 19-31.
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  • 高原,徐晋勇,高清,安晋平,徐重
    2008, 10(2): 26-30.
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    分析了双层辉光技术的特点,指出该技术在材料表面合金化方面,是一项适合于高熔点金属 表面合金化和采用高熔点金属对铁基或某些熔点较高的有色金属材料进行表面合金化的工艺技术.

  • 许茂增,吴旻
    2008, 10(2): 31-34.
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    介绍了川江地区的运输环境,阐述了滚装运输产生的行业背景、发展历程和现 状;提出以经济、社会、运输、节能、废气排放的指标,评价川江载货汽车滚装运输对区域经济 社会发展的贡献,建立了运费节约和能源节约指标的计算模型,并以2005年的统计数据和专 项调查数据为基础进行了实际评价。结果表明,川江载货汽车滚装运输兼具降低社会运输成 本、节能、环保与生态价值,有助于长江流域经济社会的可持续发展;分析了滚装运输发展 的机遇及面临的挑战,提出了促进滚装运输发展的政策和措施。

  • Gu Mengchao
    2008, 10(2): 32-36.
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    Starting from the illustration of the definition and concept of the architectural theory, the author established his unique understanding about the framework of the architectural theory and the innovation of the architectural theory underlined by Chinese characteristics.
  • 张庆礼,王晓梅,殷绍唐,江海河
    2008, 10(2): 35-40.
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    在工程数值计算、X射线衍射线形分析、光谱学等领域常使用高斯数值积分,高斯积分的节点及权重因子是数值积分的必须数据。研究了高次勒让德、拉盖尔和厄米多项式的零 点,即高斯-勒让德、高斯-拉盖尔、高斯-厄米积分的节点的计算方法,给出了一种有效的高精度数值算法——搜索迭代方法(scan-iteration method,SIM)。根据勒让德、拉盖尔、厄米多项式的特点,对拉盖尔多项式、厄米多项式的定义稍做变化后,获得了计算多项 式值的稳定递推关系。求它们的根时,先在一定范围内以一定的步长搜索根所在的

  • Zhang Liang,Zhang Kui,Zhang Renxiang
    2008, 10(2): 37-41.
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    The sensation of two-way feedback of body [1] is a special system of human reaction, which maintains and regulates symmetry and balance of human body. The human two-way feedback reacts to human health. For human health we must pay attention to the stimulations (passive acceptance and initiative interventions) and relevant influences in human body and the stimulative effect. In this paper, the experimental research of stimulation and an example of two-way feedback in human body are given. And lay a foundation of prevention, medical treatment and hygiene of human body.
  • 李永存,林爱晖,王海桥,刘荣华
    2008, 10(2): 41-45.
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    针对矿井内风流脉动的特性,基于矿井通风理论、流体力学理论、空气动力学 理论、传热传质学理论、多孔介质渗流理论,建立了矿井风流脉动下采空区流场的计算模型;通 过数值模拟,研究了脉动风流作用下采空区流场的分布特点,并通过实验对其进行了测试和 验证。结果表明所建立的采空区非稳定流场的数学模型可用于研究采空区流场分布状态,并 为采空区火灾防治提供有效的手段。

  • Fu Tairan,Cheng Xiaofang,Zhong Maohua
    2008, 10(2): 42-45.
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    In the research of primary spectrum pyrometry, this paper discusses the definition problem of radiation temperature measurement area based on the measurement coordinates. For the linear spectrum emissivity model and improved monotonic spectrum emissivity model, the characteristics of radiation temperature measurement area restricted by the measurement coordinates is theoretically analyzed, through the investigations of the temperature and emissivity coordinate axes. Choosing the specific primary spectrum pyrometer as an example in applications, the theoretical area of radiation temperature measurement of this pyrometer is given. And it is verified through blackbody experiments. The discussions of this paper will provide the necessary foundation for the theory research development of primary spectrum pyrometry and the realization of technical applications.
  • Ku Shaoping,Zhou Zude,Hu Yefa
    2008, 10(2): 46-49.
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    In order to research the vibration law of electrostatic suspension systems in the vertical direction, the mathematical model of nonlinear differential equation is established. A series of simulation is carried out. The results show that the solution of the differential equation is a periodic function. The amplitude becomes bigger with the original velocity increasing. The period becomes smaller with the original velocity increasing. The numerical methods are presented to derive the amplitude and the frequency, and the results correspond to the simulation. The condition is pointed out when simple harmonic vibration arises. The expressions of the amplitude and the period of simple harmonic vibration are derived respectively, and the results are the same with simulation. This study is helpful to get to know the vibration characteristics of the electrostatic suspension system. The external disturb should be controlled to lower the amplitude and the frequency of the vibration.
  • 章玲,周德群
    2008, 10(2): 50-53.
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    指出了线性分配方法的决策结果可能产生逆序,然后提出排序向量和相对分配比 的 概念,以分析线性分配方法决策结果产生逆序的原因,并在此基础上构建顺序线性分配方法 ,最后通过算例验证顺序线性分配方法决策结果的保序性。

  • 史俊财,胡爱群,关艳峰
    2008, 10(2): 54-59.
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    针对IEEE 802-16e协议的特点,提出了一种基于最小速率保证的IEEE 802-16e 公平 调度(MTRFS)算法。算法支持多种业务流类型并可保障业务流的最小预约速率。该算法中 引入了补偿模式,以保障处在恶劣信道条件下的业务流的最小速率。同时,该算法对高级别业务流和信道条件好的业务流提供尽可能多的带宽,以保障其QoS性能和系统吞吐量的最大化。仿真表明,该算法能够保证业务流的最小预约速率,区别对待不同优先级的业务流;无论是其公平性能还是吞吐量性能都优于传统的PF算法。该算法与IE

  • Tang Deyu,Feng Biao,Li Chunrun,Niu Huli,Zhang Yongsheng,Zhang Jianhu
    2008, 10(2): 55-60.
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    As a result of the lower backing weld efficiency, the applying of automatic welding is seriously limited. So a kind of special automatic welder is designed and manufactured for backing weld. This paper introduces the character of the assembled pulse MAG welding machine which has strong penetrability. It specifies the technology of controlling the parameters of all position automatic welding by computer and multi-axis controller. Moreover typical welding procedure parameters are provided. It is proved by examination that the economical and practical equipment and technology are suitable for the long-distance transmission pipeline, and it has a good foreground of spreading and applying.
  • 戚隆宁,张哲,黄少珉
    2008, 10(2): 60-65.
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    减少I/O设备功耗已越来越被嵌入式系统设计者所关注。传统动态功耗管理(DPM)策略在实 际的多任务环境下无法得到预期的节能效果。提出基于堆栈的预测性超时(SBPT)策略。该 策略通过分析任务的调用和堆栈信息来预测任务对I/O设备的访问模式,并采用多请求源(MSR)模型进行多任务的联合预测。然后根据预测结果分组统计,采用超时技术决策。基于实 际负载的仿真实验表明SBPT策略能够适应多任务的应用环境,更稳定更有效地降低了功耗

  • Cai Shenghua,Tetsuo Tezuka
    2008, 10(2): 61-68.
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    Electricity industry restructuring should not sacrifice supply security to pursue economic efficiency. Till now there is no academic consensus on which electricity market design provides the least distorting investment incentives. This paper discusses alternative approaches that have been adopted around the world for ensuring the appropriate level of investment in electric generation capacity, and much attention is devoted on the evaluation of capacity payment systems. Our finding is that on one hand, capacity payment systems have good effect on reducing spot market price volatility and increasing the volume of generating capacity at the costs of relatively high total electricity prices; on the other hand, however, they are not robust against either the abuse of market power in the energy market or being manipulated.
  • 刘林峰,庄艳艳,刘业
    2008, 10(2): 66-71.
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    无线传感器网络的首要设计目标是延长网络生命期,网络的拓扑控制是实现这一目标的支撑基础。针对传统拓扑控制方案所获拓扑的连通冗余度高或结构健壮性低等弊端,将问题转化 为多判据最小生成树模型,提出了一种基于遗传算法的拓扑控制方案。仿真实验结果表明,该方案可获得具有网络整体功耗低、结构健壮性高和节点间通信干扰小等特点的拓扑结构,因而能够有效地延长传感器网络生命期。

  • Fu Yuhua,Fu Anjie
    2008, 10(2): 69-77.
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    This paper discusses some important questions for new energy development, such as the prediction and calculation of sea surface temperature, ocean wave, offshore platform price, typhoon track, fire status, vibration due to earthquake, energy price, stock market’s trend and so on with the fractal methods (including the four ones of constant dimension fractal, variable dimension fractal, complex number dimension fractal and fractal series) and the improved rescaled range analysis (R/S analysis).
  • 鲍嘉明,孙伟锋,赵 野,陆生礼
    2008, 10(2): 72-78.
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    提出了高压VDMOS的一种高精度静态物理模型(HASPM)。在该模型中,基于更为合理的假设而使得用解析方法求得了双扩散沟道区中的电场和电压;通过深入研究VDMOS 内部的物理特性,给出了一个关于漂移区电场的微分方程,并在整个漂移区都用解析方法求解了该微分方程,由此求得了漂移区的电压降。计算结果表明, 该模型在漏端电流接近饱和处的稳定性有较大提高,具有较高的计算精度,特别是在栅电压与漏电压都比较大的情况下,其计算精度有较大程度的提高。

  • Liu Ranbing,Liu Leiming,Zhang Faqiang,Li Changhua
    2008, 10(2): 78-82.
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    This paper creates a LM (Levenberg-Marquardt) algorithm model which is appropriate to solve the problem about weights value of feedforward neural network. On the base of this model, we provide two applications in the oilfield production. Firstly, we simulated the functional relationships between the petrophysical and electrical properties of the rock by neural networks model, and studied oil saturation. Under the precision of data is confirmed, this method can reduce the number of experiments. Secondly, we simulated the relationships between investment and income by the neural networks model, and studied invest saturation point and income growth rate. It is very significant to guide the investment decision. The research result shows that the model is suitable for the modeling and identification of nonlinear systems due to the great fit characteristic of neural network and very fast convergence speed of LM algorithm.
  • 许参,胡晨
    2008, 10(2): 79-85.
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    电池寿命是移动设备的关键设计参数之一。由于电池容量消耗的非线性和与负载轮廓相关的特性,最大化电池寿命是个相当困难的问题。研究了在考虑电池放电特性情况下动态电压调节策略(DVS, dynamic voltage scaling)最小化电池容量消耗的问题。针对现有考虑电池 放电特性的DVS策略中空闲时间分配不合理的缺陷,提出了空闲时间分布调整过程,用于优化空闲时间分布从而减少电池容量消耗,并分析了该过程对任务调度的影响。实验结果表明对现有考虑电池放电特性的DVS策略形成的任务调度进行空闲

  • Zhang Haofeng,Zhao Chunxia,Lu Jianfeng,Tang Zhenmin,Yang Jingyu
    2008, 10(2): 83-86.
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    An image distortion correction method is proposed, which uses the straight line features. Many parallel lines of different direction from different images were extracted, and then were used to optimize the distortion parameters by nonlinear least square. The thought of step by step was added when the optimization method working. 3D world coordination is not need to know, and the method is easy to implement. The experiment result shows its high accuracy.
  • 黄莹,王志良,戚颖
    2008, 10(2): 86-90.
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    介绍了一个非穿戴式的低成本视线追踪系统。采用双近红外光源照射,单CCD相机获取信息的系统结构。并采用独特的双眼参数综合利用的方法来获取视线方向参数,使视线方向追踪效果更加稳定,并且同时扩大了有效追踪范围。此外,在视线方向参数获取、分析的过程中采用了一套快速算法使系统能满足实时性的要求。应用实例表明,该系统在人-机交互领域的应用已有了初步成效。

  • Fan Qinghui,Li Xingguo,Zhang Guangfeng
    2008, 10(2): 87-90.
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    The idea of millimeter-wave radiometer virtual prototyping is discussed in this paper. Designing environment, designing method and the main modeling components of virtual MMV radiometer are researched. Important external parameters which have significant influence to composing system are used to components modeling, and then components are taken to buildup virtual MMV radiometer system. Moreover, the effect to output is contrasted whether there is a low-noise amplifier or not.
  • Yu Weijian,Gao Qian,Zhai Shuhua,Zhang Meihua
    2008, 10(2): 91-96.
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    Rheological characteristic which have a direct influence on the stability of surrounding rock engineering under complex geological conditions is the results of geological structure evolution. Modern supporting theory considers that suitable internal energy release of surrounding rock can be good to make full use of the self-bearing capacity of rock mass. Therefore, how to release suitable displacement and control the deformation rate in stable range are the key problems relating to the realization of secondary support. Such methods combined by test and field monitoring and theoretical analysis were adopted in this paper to do the systemic research on the rock mass from micro structure to macro deformation, rheological model of JinChuan rock mass was established to discuss the reasonable supporting time. Results show that support after suitable stress and displacement release can benefit for the long term stability of surrounding rock.