Study for flexible flow shop scheduling problem with based on advanced bat algorithm

为解决柔性流水车间调度问题( flexible flow shop scheduling problem，FFSP)，提出了一种基于精英个体集的自适应蝙蝠算法（self-adaptive elite bat algorithm，SEBA）。针对蝙蝠算法存在求解离散问题具有局限性、易陷入局部极值、优化结果精度低等问题，该算法采用ROV(ranked order value)编码方式，使算法适用于求解离散型的FFSP问题；提出基于汉明距离的精英个体集，由多个适应度高但相似度低的精英个体轮流引导种群进化，增强种群进化活力，避免寻优过程陷入局部极值；提出自适应位置更新机制，提高算法优化精度。最后采用不同规模的标准实例对改进算法进行测试，与已有算法进行对比，实验结果验证了改进蝙蝠算法求解FFSP问题的有效性

Research on Modeling Method of Process Modeling Based on Production Process Event

针对目前制造执行系统MES(Manufacturing Execution System)的开发和应用只面向特定行业,可配置性、可重构性、可扩展性较差的问题,本文通过对典型的离散行业和混合行业的生产过程特点进行分析和总结,提出一种基于生产过程事件驱动的生产过程模型及其事件触发规则.通过对事件的属性和触发规则进行配置,能够实现离散、流程和混合行业典型生产过程的建模,有效提高了MES的行业适应性.最后利用该模型对实际轨道客车生产进行应用验证,证明了提出的建模方法和模型的有效性

Antidepressant Effects of Petroleum Ether Extracts from Ranae Oviductus

目的:探索哈蟆油石油醚部位(ROS)的抗抑郁作用及可能的机制。方法:雄性ICR小鼠,分为2批,每批均设空白对照组(生理盐水)和6个治疗组(分别给予阳性药氟西汀10 mg·kg-1和ROS不同剂量10,30,100,300,900 mg·kg-1),连续灌胃给药8 d。第1批动物在第7天给药后1 h和第8天给药后1 h,分别采用小鼠强迫游泳和小鼠悬尾2种"行为绝望"抑郁动物模型进行行为学观察;行为学观察结束后小鼠眼球取血,用放射免疫法检测小鼠血清皮质酮(CORT)水平。第2批动物在第8天给药后采用利血平拮抗模型,观察ROS对由利血平引起小鼠体温下降和运动不能的影响。结果:ROS 100,300,900 mg·kg-1均能不同程度地缩短小鼠强迫游泳和悬尾不动时间(P<0.05),能拮抗利血平致小鼠体温下降和运动不能(P<0.05),降低小鼠血清皮质酮水平(P<0.05)。结论:ROS具有抗抑郁作用,其机制可能与单胺类神经递质以及下丘脑-垂体-肾上腺(HPA)轴密切相关。Objective：To study the antidepressant effects of petroleum ether extracts from Ranae Oviductus（ROS） and to investigate the related mechanisms.Method：Male ICR mice were divided into 2 batches,and every batch was randomly divided into control and six treatment groups.The control group was given normal saline and treatment groups were received ROS at dose of 10,30,100,300,900 mg·kg-1 respectively for 8 days.In the first batch,1 h after the 7 th day and 8 th day administration,forced swimming test（FST） and tail suspension test（TST） were conducted for evaluation of behavior.And then the levels of serum corticosterone in the mice were measured by radioimmunoassay method.In the second batch,we observed the effects of ROS on depressive mice through reserpine reversal test after the day of 8 administration.Result：The group of 100,300,900 mg·kg-1 ROS could significantly shorten mice immobility time in FST and TST（P ＆lt; 0.05）,and could remarkably inhibit the decrease of body temperature and motor deficits in reserpine-induced hypothermia and motor deficits test at 4th hour（P ＆lt; 0.05）.Moreover,the groups of 100,300,900 mg·kg-1 ROS could decrease the cortisol level in mice serum compared with control group（P ＆lt; 0.05）.Conclusion：Petroleum ether extracts from Ranae Oviductus possess antidepressant effects,and it may be related to monoamine neurotransmitters and hypothalamic-pituitary-adrenal（HPA） axis

Calculating model for equivalent thermal defocus amount in infrared imaging system

The main effect of temperature change on infrared imaging system is the focus shift of infrared lenses. This paper analyzes the equivalent influence on imaging between the temperature change and the defocus at room temperature. In order to quantify the equivalence, we define an equivalent thermal defocus amount (ETDA). The ETDA describes the distance of the photosensitive surface shifting at room temperature, which has the same effect on imaging as the temperature changes. To model the ETDA, the expression of the focal shift as a function of temperature is obtained by solving partial differential equations for the thermal effect on light path firstly with some approximations. Then point spread functions of the thermal effect and defocus at room temperature are modeled based on wave aberration. The calculating model of ETDA is finally established by making their PSFs equal under the condition that the cutoff frequency of infrared imaging systems is much smaller than that of infrared lens. The experimental results indicate that defocus of ETDA at room temperature has the same influence on imaging as the thermal effect. Prospectively, experiments at high/low temperature can be replaced by experiments at room temperature with ETDA

A line mapping based automatic registration algorithm of infrared and visible images

There exist complex gray mapping relationships among infrared and visible images because of the different imaging mechanisms. The difficulty of infrared and visible image registration is to find a reasonable similarity definition. In this paper, we develop a novel image similarity called implicit linesegment similarity(ILS) and a registration algorithm of infrared and visible images based on ILS. Essentially, the algorithm achieves image registration by aligning the corresponding line segment features in two images. First, we extract line segment features and record their coordinate positions in one of the images, and map these line segments into the second image based on the geometric transformation model. Then we iteratively maximize the degree of similarity between the line segment features and correspondence regions in the second image to obtain the model parameters. The advantage of doing this is no need directly measuring the gray similarity between the two images. We adopt a multi-resolution analysis method to calculate the model parameters from coarse to fine on Gaussian scale space. The geometric transformation parameters are finally obtained by the improved Powell algorithm. Comparative experiments demonstrate that the proposed algorithm can effectively achieve the automatic registration for infrared and visible images, and under considerable accuracy it makes a more significant improvement on computational efficiency and anti-noise ability than previously proposed algorithms

ZnSe-material phase mask applied to athermalization of infrared imaging systems

This paper reports a ZnSe-material phase mask that is applied to athermalization of a conventional infrared imaging system. Its principle, design, manufacture, measurement, and performance validation are successively discussed. This paper concludes that a ZnSe-material phase mask has a permissible manufacturing error 2.14 times as large as a Ge-material phase mask. By constructing and solving an optimization problem, the ZnSe-material phase mask is optimally designed. The optimal phase mask is manufactured and measured with a form manufacturing error of 1.370 &mu;m and a surface roughness value of 9.926 nm. Experiments prove that the wavefront coding athermalized longwave infrared (LWIR) imaging system works well over the temperature range from -40&deg;C to +60&deg;C

Rectilinear-motion space inversion-based detection approach for infrared dim air targets with variable velocities

Dim targets are extremely difficult to detect using methods based on single-frame detection. Radiation accumulation is one of the effective methods to improve signal-to-noise ratio (SNR). A detection approach based on radiation accumulation is proposed. First, a location space and a motion space are established. Radiation accumulation operation, controlled by vectors from the motion space, is applied to the original image space. Then, a new image space is acquired where some images have an improved SNR. Second, quasitargets in the new image space are obtained by constant false-alarm ratio judging, and location vectors and motion vectors of quasitargets are also acquired simultaneously. Third, the location vectors and motion vectors are mapped into the two spaces, respectively. Volume density function is defined in the motion space. Location extremum of the location space and volume density extremum of motion space will confirm the true target. Finally, actual location of the true target in the original image space is obtained by space inversion. The approach is also applicable to detect multiple dim targets. Experimental results show the effectiveness of the proposed approach and demonstrate the approach is superior to compared approaches on detection probability and false alarm probability. &copy; 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)