Self-calibration based on invariant view recognition: Dynamic approach to navigation

We extend a dynamic approach of behavior generation to the representation of spatial information. Two levels of dynamics integrate dead-reckoning, dominant far from home bases, and piloting, dominant near home bases. When the view-based piloting system recognizes a home base, visual place information recalibrates the dead-reckoning system, inverting the hierarchical ordering of the two dynamic levels by time scale inversion. Reference views taken at discrete home bases are recognized invariantly under rotation of views. This process yields compass information. Continuous translational information is obtained as a neural place representation built from view correlations with a scattered set of local views. This self-calibrating cognitive map couples into a dynamics of heading direction integrating the behaviors of obstacle avoidance and target acquisition. Targets can be designated in terms of the cognitive map. We demonstrate the dynamical model in simulation.     

电解铝侧插自焙槽技术改造与环境保护

电解铝侧插自焙槽属于落后的生产工艺，由于其能耗高、物料消耗大、劳动强度大、环境污染严重，在国内电解铝中已开始进行大规模的淘汰改造。采用先进的预焙电解槽生产技术，降耗节能、改善生产劳动强度，环境污染得到有效治理，各项环境指标达标排放，经济技术指标提高，食业面貌发生了巨大大变化。     

费索激光波长计的温度补偿

论文概述了费索干涉仪型激光波长计的原理和标定。详细分析了环境温度变化使仪器参数发生微小变化；论述了ＳＩＯＭ－０１激光波长计以一种新颖的将标准激光引入测量光路的方法，随时对仪器参数实行单点标定，克服了由环境温度变化引进的测量误差。     

Impacts of spectral band difference effects on radiometric cross-calibration between satellite sensors in the solar-reflective spectral domain

In order for quantitative applications to make full use of the ever-increasing number of Earth observation satellite systems, data from the various imaging sensors involved must be on a consistent radiometric scale. This paper reports on an investigation of radiometric calibration errors due to differences in spectral response functions between satellite sensors when attempting cross-calibration based on near-simultaneous imaging of common ground targets in analogous spectral bands, a commonly used post-launch calibration methodology. Twenty Earth observation imaging sensors (including coarser and higher spatial resolution sensors) were considered, using the Landsat solar reflective spectral domain as a framework. Scene content was simulated using spectra for four ground target types (Railroad Valley Playa, snow, sand and rangeland), together with various combinations of atmospheric states and illumination geometries. Results were obtained as a function of ground target type, satellite sensor comparison, spectral region, and scene content. Overall, if spectral band difference effects (SBDEs) are not taken into account, the Railroad Valley Playa site is a “good” ground target for cross calibration between most but not all satellite sensors in most but not all spectral regions investigated. “Good” is defined as SBDEs within ± 3%. The other three ground target types considered (snow, sand and rangeland) proved to be more sensitive to uncorrected SBDEs than the RVPN site overall. The spectral characteristics of the scene content (solar irradiance, surface reflectance and atmosphere) are examined in detail to clarify why spectral difference effects arise and why they can be significant when comparing different imaging sensor systems. Atmospheric gas absorption features are identified as being the main source of spectral variability in most spectral regions. The paper concludes with recommendations on spectral data and tools that would facilitate cross-calibration between multiple satellite sensors.     

The applicability of the ITS-90 method to platinum resistance thermometers of different purity

The static characteristics of platinum resistance thermometers with different platinum purities were measured. It is shown that in the 0–420°C range the ITS-90 method gives an error of less than 0.01°C, while in the 0–230°C range the error is less than 0.006°C. __________ Translated from Izmeritel’naya Tekhnika, No. 12, pp. 33–36, December, 2006.     

回转窑大齿圈的安装与找正

根据回转窑大齿圈结构特点，阐述了回转窑大修中两个半齿圈组装、校正及与简体的安装、找正方法以及重要工艺过程中的注意事项，在山西铝厂2^#熟料窑大修中取得了良好效果。     

非相态稀体系三元复合驱油机理数学模型

在引进的UTCHEM数值模拟软件基础上，建立了非相态稀体系三元复合驱油机理数学模型，并利用所建立的数学模型对UTCHEM数值模拟软件进行了改进，对改进后的模型进行的模拟功能测试结果表明，模拟计算给出的水驱，聚合物驱和三元复合驱综合含水率变化曲线符号实际开采规律；三元复合驱比聚合物驱较大幅度地降低了油层剩余油饱和度，说明所建立的非相态稀体系驱油机理数学模型能够正确地模拟三元复合驱过程。     

螺栓球网架杆件在非节点横向荷载作用下承载力的有限元分析

运用ANSYS有限元程序 ,研究了在轴向力与非节点横向力共同作用下网架螺栓球节点杆件的受力性能 ,得出其应力分布状况及弹性极限承载力 ,并提出了螺栓球网架杆件在非节点横向力作用下承载力的计算公式。     

测量高功率激光的体吸收能量计

叙述了体吸收激光能量计的特点，介绍了其标定方法，给出了其技术参数。体吸收激光地的推广应用取得了广泛的社会效益。     

A calibration method for the energy-integrating function in photovoltaic system monitoring

Solar radiation has an irregularly varying factor due to a basic day and night cycle and climatic conditions. For such conditions a data sampling interval is important to ensure the accuracy of energy monitoring in a photovoltaic system. While treating a system monitoring equipment as a black box. the author has developed the method of calibrating an energy-integrating function. At first for various input waveforms, the relationship between sampling intervals and quasi-integration outputs have been examined by trapezoidal rule. In the numerical simulation the phases of the sampling clock also are considered Then it is concluded that a sampling interval can be inspected through outside observation only by using a rectangular single pulse. By applying the pulse to the energy-integrating process, two kinds of integrated outputs can be obtained for different sampling phases. The calculated difference between both outputs can uniquely give the sampling interval being inspected. Conditions to ensure measuring accuracy are discussed and the validity of this method has been demonstrated experimentally. Practical calibrating procedures also are proposed for the integrating function of PV system monitoring.