字符识别中的加权极向笔道密度特征

针对手写字符特征描述困难的特点，文章提出了加权极向笔道密度特征和加权径向轮廓特征，并用这些特征描述以弯曲笔划为主的手写字符，实验表明效果明显。     

电动调节阀的使用和维修

该文主要介绍了电动调节阀的安装注意事项、常见故障及原因分析，以保障电动调节阀的正确使用和维修。     

MP-1药剂泵的研制与应用

本文介绍了ＭＰ－１药剂泵的工作原理及结构特点，它具有计量准确、精确度高、耐腐蚀、使用寿命长等特点，该泵适用于选矿及化工等专业系统输送和计量各种药剂溶液。     

绝对值编码器在超行程测量中的应用

以KU咬BLER 5860绝对值编码器为例,介绍了绝对值编码器在行程测量中的应用,着重讲述了在超过编码器测量范围时的处理方法。     

智能监控系统在压装设备中的应用

在工业化生产线上,过盈装配工艺应用广泛,其合理性直接影响产品的性能,而普通压机无法检测装配件是否放置到位和装配件之间的过盈量。文中所述的智能压机通过利用压装设备工作过程中压装力和行程有对应坐标关系的特点,应用智能化的控制系统,解决了普通压机存在的问题,提高了压装产品的质量、降低了产品的废品率。     

A clinically feasible kinematic assessment method of upper extremity motor function impairment after stroke

The development of feasible kinematic assessment methods of upper extremity motor function impairment after stroke is clinically extremely important in physiotherapy and rehabilitation engineering. Microsoft Kinect has a potential of a low-cost and compact solution for clinical based assessment of the upper limb motor function after stroke. However, the reliability of Microsoft Kinect in the upper limb motor function assessment has not been well established. Therefore, there is a hesitation in usage of Microsoft Kinect for clinical applications. It is expected that any measurement procedure has the capability to differentiate between pathological and normal performance. On the other hand, the identification of the kinematic metrics that best evaluate impairment of upper-extremity motor function is a key problem of any measurement protocol. Primary objective of our study is, by differentiating pathological performance from the healthy performance and identifying the kinematic metrics that best evaluate the impairment, to demonstrate the robustness/usability of Microsoft Kinect in kinematic analysis of motor performance of stroke patients. We compared the kinematic metrics of the forward reaching movement obtained data recorded from Microsoft Kinect between three stroke patients and two healthy subjects based on the Principal Component Analysis (PCA). In the study, we have defined a new inter-joint coordination index (IJCI) based on PCA to capture inter-joint coordination dynamic of reaching movement in addition to other metrics those have been previously defined and used in literature to quantify upper limb impairment. We observed that the IJCI has significant importance to detect impairment of upper-extremity motor function during a forward reaching task and to discriminate stroke patients from healthy controls.We hope that this paper will promote the acceptance of objective kinematic analysis into routine rehabilitation practices.     

Influence of stroke deviation on the power extraction performance of a fully-active flapping foil

The influence of stroke deviation on the power extraction performance of a fully-active flapping foil is numerically investigated in this work. A NACA0015 airfoil placed in a two-dimensional laminar flow is employed to extract power from the flow. It synchronously executes a rotational motion and a translational motion. In the traditional flapping foil based power extraction system, the foil only translates in vertical direction (heaving motion). In the current study, however, the foil can translate in both horizontal direction (surging motion) and vertical direction, which is attributed to the stroke deviation of a flapping wing. At a Reynolds number of 1100 and the position of the rotating axis at one-third chord, the effects of the amplitude of horizontal motion, the phase difference between the horizontal motion and the vertical motion as well as the frequency of horizontal motion on the power extraction performance are examined in detail. It is shown that compared with the traditional flapping foil, the efficiency improvement of power extraction for the flapping foil with additional horizontal motion can be achieved. Based on the numerical analysis, it is found that the enhanced power extraction from the vertical motion, which is induced by the increased lift force under appropriate horizontal motion, directly benefits the efficiency enhancement.     

Preprocessing for Chinese character recognition and global classification of handwritten Chinese characters

Techniques for calculating the stroke directions of thinned binary characters and for detecting the intersections and end points of strokes by means of pattern matching and weighting method are proposed as a preprocessing of handwritten Chinese character recognition. We also propose a method for global classification of handwritten Chinese characters by means of projection profiles of strokes and show that the method is available for the Chinese characters written in the square style.     

基于笔划提取和合并的离线手写体汉字字符切分算法

手写体汉字字符切分是离线汉字字符识别预处理中的一个重要问题，针对离线手写体汉字，提出一种基于笔划提取和合并的手写体汉字字符切分算法。该算法首先基于方向游程提取汉字的笔划，并建立笔划框，再根据汉字笔划的结构知识对笔划框进行合并，得到字符的切分结果。该算法能较好地解决粘连汉字字符的切分问题，对从现场随机采集的2500封手写体信函地址汉字进行切分，单字正确率可达91．5％。     

The Method for Measuring Circuit Breaker Overtravel Based on Operating Process

At present, the over-travel measurement of high-voltage circuit breakers is mostly carried out after the circuit breaker is completely dismantled. The disadvantage of the measurement is that it can only be measured when the circuit breaker is dismantled and overhauled. Defects are diagnosed in a timely and effective manner, and capacity causes hidden troubles. This article provides a method for direct measurement of hydraulic circuit breakers without any adjustment or disassembly. The method can be carried out in various situations such as minor repairs, major repairs, and temporary repairs, which not only saves time, but also improves accuracy of the measurement. The comparative test results show that this method can be simple, convenient and effective to measure the overtravel of the high-voltage circuit breaker.