Abstract:In view of the vehicle cornering or path changing under ultimate handling maneuver, a 3-DOF nonlinear vehicle dynamics model which takes the vehicle lateral velocity, yaw rate and body roll angle as the State variables is presented. Based on the dynamic analysis, the method which using additional yaw moment produced by different longitudinal braking force among each wheels to improving vehicle handling stability in emergency situations is discussed. Considering the sideslip angle as one of the vehicle state variables is difficult to measuring, the sideslip angle estimation based on vehicle dynamic model and kinematics is designed. And then, based on the theory of siding model control, the combining sliding model control system is founded, which taking the vehicle yaw rate and body side-slip angle errors between the estimated and the real as the input variables, and taking the braking torque and the steering angle as control aims. The simulation results indicate that the control method can effectively improve the vehicle lateral handling stability.

Abstract:详细分析了AGMA标准中基于均衡滑动率原则的外(内)啮合圆柱齿轮变位系数的选择方法,并根据齿轮滑动率计算理论对相关计算公式进行了推导.同时讨论了该公式的使用方法并编制了相关程序,最后通过计算实例对程序的有效性进行了验证.

Abstract:在建立电动助力转向系统数学模型的基础上,对电动助力转向系统的控制算法及控制逻辑进行了分析研究,建立了系统状态空间方程,并对系统模型进行了仿真分析,得出电动助力转向系统的转向动态特性及对路面干扰的响应情况,研究结果为电动助力转向系统的设计与实际应用打下了理论基础.

Abstract:The kinematical principle and mechanical characteristic of the cell membrane stress modulator are analyzed, which is a key equipment of the external cell bringing up experimental system. A designing project of the experimental system is put forward based on position measurement and controlling modulating region. It validates that the design can improve the mechanical characteristic of the device. At the same time, the device can work smoothly, the life time of its correlative parts can be increased, and the power waste of the system can be reduced.

Abstract:By of Stevens steady wide frequency noise loudness and Fastl total sensation noise calculation method, sound quality evaluation of the noise left and back-end face was studied before the compressor improved and after the minipore muffler installed. The research indicates that the compressor noise is reduced, at the same time, the loudness left the compressor and the back - end face is reduced by 10.25 sone and 13.3 sone respectively. The rate reduced is over 40%. The total sensation noise is reduced by 12.5 noy and 15 noy, the rate achieved is over 45%. It is very perfect to improve the compressor sound quality with the use of minipore muffler.

Abstract:利用机理分析方法建立并改进轧钢加热炉中钢坯温度的预报模型,得出一定条件下炉温分布与钢温变化惟一对应的特点,据此提出一种以优化钢坯升温曲线来逆推炉温分布的新方法.这种逆推法更加有利于实现多目标的优化.对钢坯升温优化模型中目标函数及约束条件进行分析,更全面地兼顾了钢坯质量与节能,使炉温设定更符合生产目标.该方法在优化问题的求解方面更为简单,运算速度更快,更利于实时控制.

Abstract:针对循环流化床炉内固硫效率较低的现状,采用含硫量1.8%的煤矸石、含硫量1.98%的煤,选择石灰石为脱硫剂,按Ca:S为2,混合煤与脱硫剂;并选用NaCl、K2CO3和象草作为脱硫添加剂,分别按不同比例与石灰石混合;使用快速智能定硫仪进行脱硫实验.实验结果表明这3种添加剂可以提高石灰石脱硫率,800℃时脱硫效率最高.NaCl、K2CO3和象草的配比分别为1%、1%和20%时,煤矸石的脱硫效率最高.NaCl、K2CO3和象草配比分别为2%、1%、20%时,煤的脱硫效率最高.

Abstract:The worst and best-case coverage algorithm is presented based on probability mode of wireless sensor network. The main idea is that choose these lattice points possibly with lowest detection probability by nodes to form the most breach path and choose those lattice points possibly with maximal detection probability by nodes to form the most support path. Simulation experiment validates the algorithm.

Abstract:XML has become an industry standard for exchanging data between heterogeneous databases. Due to the different schema applied in XML and different databases, the problem of schema transformation has to be resolved. The autrors propose a novel data exchange mechanism binding source-end XML document by using target-end persistent class to deal with the difficulty of implementation and poor flexibility, based on the technology of object/relational mapping and XML data binding. The built XML document is consistent with source-end schema and is easy to be parsed and stored, hence this mechanism can resolve the problem of schema mismatching effectively.

Abstract:为了解决多进制LDPC码原有译码算法复杂度较高,不利于硬件实现的问题,研究了多进制LDPC码的2种简化译码算法:基于快速傅里叶变换的信度传播译码算法(FFT-BP)和基于对数运算的Log-BP译码算法.同时分析了基于这2种译码算法的高码率(1/2～1)多进制LDPC码在AWGN信道中的性能优势.仿真结果表明:当多进制LDPC码采用这2种不同的译码算法时,随着码率的下降,编码增益和性能曲线与香农限的距离都会随之而增大,即多进制LDPC码适合于高码率情况下的应用.并在牺牲一定的信噪比时,Log-BP算法能够使多进制LDPC码的硬件复杂度得到较大的改善.

Abstract:In view of the important effect of clustering analysis in data mining, the clustering rules and its curve are studied to solve the problem of determining clustering number. A kind of self-adaptation clustering ANN is presented based on SOFM ANN, which can automatically determine the clustering number. Based on practical sales data, the time feature analysis of power user consumption are carried out by using the self-adaptation clustering ANN, whose conclusion has the important referenced values for adjusting power price correspondingly and arranging power producing reasonably.

Abstract:介绍了基于地理信息系统(GIS)的新型模糊综合水质评价模型(FCWQA).FCWQA模型是基于模糊数学隶属度的理论上建立起来的一种水质综合评价模型,能对被评价水体的水质状况给出总体评价,且其评价结果与中国的地表水环境质量标准的水质级别直接对应,能够通过一个综合指标来评价水质状况,其评价结果具有实际意义.而GIS-FCWQA系统,整合了FCWQA模型、GIS和数据库,形成了一个直观的、易于操作的水质评价系统,该系统同时具备水质预测功能.并以三峡库区凤嘴江的水质评价为例进行实例分析.

Abstract:The calculation on working resistances of supports has been one of key research questions for coal faces with sublevel caving. Based on experimental results of mechanical property of top-coal, it is the top-coal failure strength meeting Mohr-Coulomb Theory that is summed up. According to force characteristic of top-coal body in coal face with sublevel caving, using strain-equivalent principle of Damage Mechanics, the authors set up bearing mechanical model for top-coal body within face width. From the top-coal bearing capacity point of view, the interaction relationship between supports and top-coal body is studied. Theoretical calculation formula on working resistance of supports is deduced. Ground press behaviors which working with resistances of supports are increased with top-coal strength increment were better explained with this model. The conclusions have a definite direction value for calculating working resistances of supports in coal faces with sublevel caving.

Abstract:The structure of liquid mercury is determined by 0 -20 type powder diffractometer. A new simple method is proposed to analy the structure of non-atom liquid by using the intensity diffraction profiles. It is found that the space between two nearest neighbor Hg atoms is 3.00 A and the second near neighbor atoms is 3.38 A. The method of peak separation for X-ray diffraction profile is proved to be effective by applying to non-atom liquid system.

Abstract:通过室内模拟酸雨土柱淋溶实验,研究了酸雨作用下三峡库区4种典型土壤盐基离子的释放特点和释放机制.研究表明:酸雨会导致土壤酸化,土壤pH值随酸雨pH值下降而下降,土壤pH值和CEC含量越高,土壤受酸雨酸化影响越小;淋滤液的电导率都呈现先升后降的趋势,而且都有一个峰值,但峰形有明显差异;酸雨导致盐基离子的淋失,盐基饱和度降低,土壤中各离子淋失量大小均为Ca2 ＞Mg2 ＞Na ＞K .

Abstract:针对高浓度含氮废水亚硝化SBR工艺,进行了动力学模型研究,建立了NH4 -N浓度变化模型、NO2--N浓度变化模型和NO3--N浓度变化模型.通过试验对动力学模型进行了预测与评价,结果表明:以动力学方程式(尤其是NH4 -N浓度变化的模型、NO2--N浓度变化的模型)计算的理论值与实测值结果基本吻合,对高浓度氨氮废水亚硝化SBR工艺的设计和运行具有一定的指导意义.

Abstract:垃圾填埋场运行过程中,渗滤液的渗流和生物化学作用,不断影响和改变着排水层的渗透性能.以不同粒度成分的砂砾排水层为研究对象,模拟填埋场渗滤液的渗流,探索性地将化学实验方法应用于渗滤液排水层渗透能力评价中.实验发现,渗滤液中挥发性脂肪酸的发酵产物(碳酸)与金属离子发生化学反应是淤堵物生成的主要原因,而生物膜的生长和固体悬浮物的沉聚是次要原因.淤堵物的主要化合物成分是碳酸钙和二氧化硅,主要元素组成为Ca、Si、Fe、Mn、Zn、Mg等.淤堵物的成分及其相对含量与排水介质粒度成分无关,但排水介质的有效粒径越大,生成淤堵物的总量越多.建立了排水层渗透性(K)与渗滤液水质(COD)、排水层结构(avρgl·d10和排水孔隙度)间关系的淤堵模型.

Abstract:土壤吸收系数和脂水分配系数二者相互区别且又相关.为了揭示这种关系,运用按氢分类的分子电性距离矢量(MEDV)对单羟基酚类进行结构表征,通过按变量显著性大小依次引入的逐步回归(SMR)方法得到的三参数多元线形回归(MLR)模型可以较好表达土壤吸收系数Koc与分子结构之间的定量关系,模型的相关系数R为0.950.用留一法(LOO)进行交互检验,复相关系数R2CV为0.847;用同样的方法对脂水分配系数Kow建模,六参数模型的相关系数R为0.981,复相关系数R2CV为 0.873,表明定量模型对Koc和Kow都具有良好的稳定性和预测能力.比较羟基对模型的影响,二者存在明显差异.

Abstract:为了减少人工照明的耗电量,预测房间日光照明潜力,介绍了一种日光照明室内照度动态计算简便方法.它利用修正的Tragenza的房间平均照度模型,根据房间尺寸,窗户朝向、尺度,遮阳设施、材料反射系数、相邻建筑间相对位置,以及逐时太阳辐射数据和光热转换系数等来预测房间动态照度,进而计算日光照明潜力.通过用Visual Basic语言将该计算方法编入计算程序,对北京地区日光照明进行了实例分析,预测出5种常用遮阳装置下的建筑室内日光照明节能潜力.结果表明,该方法可以用来计算不同遮阳设施类型的窗户系统的建筑室内逐时有用日光照度,对规划设计阶段的建筑进行照明节能潜力的预测.

Abstract:CIE has proposed the semi-cylindrical illuminations as evaluation indicators and the overseas reports nave also been put forward in the use of three-dimensional sense indicators to prevent violations based on the assessment of lighting to create efficient, economic, safe and comfortable urban traffic lighting environments. But this required experimental verifications. The study used subjective and objective experiment methods to survey the parts of the sidewalk lighting in Chongqing urban. Through extensive testing information disposals and analyses, the autrors illumination should be the optimal parameters of sidewalk lighting and exist problems at present. The computer gray separation method is first used in analysing the facial features of pedestrians at night. It gets the scope of applications and application conditions of three-dimensional sense. The study provide an experimental basis and scientific method for constituting sidewalk lighting evaluation indicators, and provided important values for the study of sidewalk lighting evaluation indicators.

Abstract:介绍了一种将数字图像处理技术应用于城市建筑规划设计中太阳辐射能的利用与分析的方法.阐述了将建筑规划CAD图形分别转换成真彩色图像、建筑数字高度模型、阴影图像,进而进行太阳直射辐射能量在建筑群中的不同时刻分布计算和分析的过程,其目的是对城市建筑群规划中太阳直射辐射能量的分布,建筑采光与建筑高度和位置的关系作前期分析,提出合理的建筑高度参数及布局的参考值.这种基于数字图像处理的方法对城市能效建筑规划设计提供了有用工具.

Abstract:By means of the substructure approach in the frequency domain, equations of motion of the rubber - isolated structures are established considering the soil-structure dynamic interaction. The seismic responses of two shear-type base-isolated structures with an embedded rigid rectangular foundation are numerically simulated, and the influences of the different rigidities of soil on the effect of the base isolation and the seismic responses of the structure are investigated. It is concluded that rubber bearing isolation can reduce the dynamic characteristics of structures and reduce displacement of floor and basement relative to ground. Meanwhile, considering the dynamic soil-structure interaction may reduce the isolation effect of the rubber-isolated structures and the effect level is in direct proportion to the stiffness of the superstructure and inverse proportion to the stiffness of foundation soil.

Abstract:通过对2个小跨高比新型配筋方案带板连梁与不带板连梁试件在低周反复荷载作用下的对比试验,揭示了整浇楼板对抗震连梁裂缝发育及破坏形态的影响规律,同时分析了带板连梁的强度发展、刚度退化、滞回及耗能性能等抗震特性,根据受力机理探讨了连梁的变形性能,提出了楼板在参与连梁抗剪作用中的有效板宽范围.

Abstract:For a reinforce concrete frame structures which is not satisfied the standard for seismic appraiser of building, viscidity dampers are used to retrofit the structure. Four reinforce schemes are selected in which six same viscidity dampers are located at different position of the structure. Compared seismic performance of the retrofited structure with unretrofited one, an optimum scheme where viscidity dampers should better set is obtained. Then the number and technical parameter of viscidity dampers are adjusted, and seismic performance of the structure are calculated. The results are compared and a more economic scheme is obtained because the cost is lowest and the displacement of the structure under earthquakes is satisfied the standard for seismic appraiser of building. Several rules and advices are gotten about how to use the viscidity dampers to retrofit reinforce concrete frame structures. The conclusion about viscidity dampers are useful for similar actual engineering.

Abstract:Acceleration pulses have been found in near-fault earthquake ground motions long ago and attracted lots of researchers, since such pulses, especially low frequency pulses have great impact on engineering structures. Many people previously focused on velocity pulses which result from acceleration pulses, however, recently a few researchers began to directly study acceleration pulses, such as to get high frequency pulses and low frequency pulses with empirical mode decomposition. Wavelet transform was utilized to decompose acceleration records. Subsequently high frequency and low frequency components of the records were obtained and acceleration pulses were identified. By comparisons in response spectra and structural nonlinear responses, it is proved that the decomposition of acceleration records with wavelet is reliable and the identification of acceleration pulses is correct.

Abstract:运用运动学方法建立了速流槽出口处泥石流体的抛程理论计算方法,通过速流结构模型试验验证了抛程计算公式,并获得了速流槽反倾段倾角在8°左右时抛程最大,泥石流理论计算抛程值偏小的重要结论.通过平川沟泥石流速流结构的现场调查证实了泥石流抛程计算方法的正确性.

Abstract:Cavitations are not only the dominant mechanisms of the stone comminution in ESWL but also the leading factors for the tissue injury. This conclusion has been shown by the theoretical analysis, the numerical simulation, the experiments in vivo and in vitro and the practice of the clinic. This paper summarizes the development in the field of the cavitation in ESWL, which lays the foundation for the further study of the ESWL. There are many difficulties and challenges in the research of the ESWL which needs further study in the theoretical field , the innovation for the numerical methods, the amelioration for the experiment technology and a lot of serious clinic practices. Compared with the theoretical analysis and the experiment technology, numerical simulation is an economical and safe method for the research of ESWL.

Abstract:采用中性介子π0与核子N-反核子(-N)强作用Lorentz不变耦合模型,对模型中两类Feynman传播子--π0和N-(-N)传播子,在其内部出现一般圈图相互作用进行具体归类与研究,获得π0和N-(-N)重整化传播子完全函数形式△(完全)F,c(k2)和S(完全)F,c(p)的构成方式.进而可采用"链图求和逼近"对△(完全)F,c(k2)和S(完全)F,c(p)构成方式作一般链图归类与求和处理,获得(完全)F,c(k2)和S(完全)F,c(p)的"链图求和逼近"一般表示和同阶等效表示.研究结果,对探讨"Dyson重整化理论猜想",从而解决半个世纪以来量子场论重大基础理论问题,提供某些借鉴与参考之处--有可能是研究"Dyson重整化理论猜想"的某个有效突破口.

Abstract:研究小波变换方法在金融时序分析中模型变点探测的应用,对金融时间序列采用连续小波变换,通过分析小波变换模极大值线对应的时间序列样本点的小波系数特点,提出了金融时间序列变点探测的小波模极大值线方法,并对广义自回归条件异方差均值模型(GARCH-M模型)进行了仿真计算,其结果验证了此方法的实用性和有效性.该方法更能准确定位金融资产收益率波动所发生的具体时刻,有利于金融资产价格异常时点的正确识别与统计建模分析和资产收益率波动的预测.

Abstract:Based on the widening of definition of talent effectiveness, using the indexes of talent structure and economic output types, many indexes of talent effectiveness are built up. A synthetic evaluation of regional talent utilization efficiency is presented based on principal components analyses. The result indicates that the talent utilization efficiency in east China is higher distinctly than in middle and west China and the talent utilization efficiency in middle is close to in west China without obvious hierarchy distribution

Abstract:Started with studying the evaluation standard, which are influencing the decision for location selection of the resident project, this paper set up a decision model for the location selection. It confirmeds evaluation rule of the location selection according to the characteristic of the resident project and selects all the location by fuzzy mathematic and AHP. After this selection, AHP is used again to taxis all the suitable location to build in the most suitable place. This model is provided with a scientific and rational decision result in the location selection for companies of the real estate.

Abstract:基于公司股权结构构建投资者保护变量,运用Logistic回归分析和多元化回归分析方法考察中国投资者保护与公司多元化之间的关系.结果表明,上市公司因为第一大股东的绝对持股比例、相对持股比例和实际控制人的不同,导致投资者保护存在一定差异,而投资者保护的差异又会对公司多元化经营决策产生重大影响,投资者保护越好,公司进行多元化经营的概率越小;但当公司进行多元化经营后,投资者保护越好的公司,其价值折价越大.