智能力敏传感器的研制

针对传统的差压密度计和压力式液位计分别存在可靠性不高、不适用于介质密度经常变化的场合的问题,设计了一种基于Freescale MC9S08AW60微控制器的智能力敏传感器,详细介绍了该传感器主要电路的设计。该智能传感器实现了数据采集、信号处理、数据通信和电流环输出式数模转换功能。实际应用表明,在-20～+80℃的工作温度范围内,密度测量精度可达±5kg/m3,液位测量不受悬浮液回流和液位波动的影响,很好地满足了工业现场的应用。     

基于CC-Link总线的火车皮防冻液自动喷洒系统的设计

针对选煤厂运煤火车人工喷洒防冻液不均匀的问题,设计了一种基于CC-Link的火车皮防冻液自动喷洒系统。该系统采用CC-Link现场总线技术将多套喷洒装置和防冻液加压泵站构建成工业现场级控制网络,实现了各装置之间的联动和实时监控。实际应用表明,该系统避免了防冻液的浪费,提高了工作效率。     

选煤厂设备巡检系统设计

针对传统的选煤厂设备管理方法存在漏检漏查、无专用仪器、数据处理繁琐等问题,提出了一种新型的选煤厂设备巡检系统的设计方案。在巡检线路及设备上安装相应的感应卡,巡检人员携带巡检仪到各点读卡,把代表该点的卡号和时间记录下来,同时完成规定的巡检和数据采集工作,然后进行下一点的巡检任务;巡检工作完成后将巡检仪的数据传送到监控计算机,由巡检数据综合信息管理软件进行处理,从而达到对巡检情况进行记录和考核的目的。实际应用表明,该系统运行稳定、功能实用。     

Evaluation of contrast metrics for liquid‐crystal displays under different viewing conditions

Abstract— A psychophysical experiment was carried out to assess the perceptual contrast on a large‐sized liquid‐crystal display (LCD) under nine phases of viewing conditions. Based on the results, six contrast models employing different color attributes or the index of just‐noticeable difference (JND) were developed. Their performances were also tested by the visual data of the nine phases, which indicated that the model C_Q employing CIECAM02 brightness gives the best performance in predicting visual data under different viewing conditions among those models. A preprocessing step was also proposed to utilize the contrast model C_Q conveniently in the practical contrast evaluation of LCDs.     

Beyond interpretation: Reply to Cummins' response

In his response to my Why There Are No Mental Representations, Robert Cummins accused me of having misinterpreted his views, and attempted to undermine a crucial premise of my argument, which claimed that one could only define a semantic type non-semantically by stipulating which tokens should receive a uniform interpretation. I respond to the charge and defend the premise.     

Water table fluctuation with a random initial condition

The nonlinear Boussinesq equation is used to understand water table fluctuations in various ditch drainage problems. An approximate solution of this equation with a random initial condition and deterministic boundary conditions, recharge rate and aquifer parameters has been developed to predict a transient water table in a ditch-drainage system. The effects of uncertainty in the initial condition on the water table are illustrated with the help of a synthetic example. These results would find applications in ditch-drainage design.Notation A / tanh t - a lower value of the random variable representing the initial water table height at the mid point - a+b Upper value of the random variable representing the initial water table height at the midpoint - B tanh t - C 4/ - h variable water table height - h mean of the variable water table height - h _m variable water table height at the mid point - h _m mean of the variable water table height at the mid point - K hydraulic conductivity - L half spacing between the ditches - m ₀ initial water table height at the mid point - N Uniform rate of recharge - S specific yield - t time of observation - x distance measured from the ditch boundary - (4/SL)(NK)^1/2 - (L/4)(N/K)^1/2 - dummy integral variable     

咪唑啉缓蚀剂工艺条件优化及效果

在减缓金属腐蚀的研究中,为了缓解在酸性溶液、碱性溶液以及大气、土壤等介质中金属腐蚀较为严重的问题,对咪唑啉类缓蚀剂进行了工艺条件优化.采用静态失重法研究了碳钢在加入了缓蚀剂的盐酸溶液中的缓蚀性能.在最佳合成条件下苯甲酸与二乙烯三胺最佳摩尔比为1∶1.3,催化剂质量分数为1.2%,环化时间为1 h,咪唑啉中间体与氯化苄的最佳摩尔比为1∶1.1,季铵化反应时间为1 h,季铵化反应温度为70 ℃,缓蚀剂的最佳质量分数为1%,最终缓蚀率可以达到99.37%.     

珠粒和工艺因素对消失模铸造模质量的影响

从珠粒因素和工艺因素两方面分别介绍了其对消失模铸造模质量的影响情况及在中国的研究现状,对其原因进行了分析,得出了珠粒粒度和发泡剂含量、发泡工艺和模密度、发泡工艺和成型工艺等都相互制约的结论,并提出,可以通过对以上关键因素正交优化达到控制模质量的目的.     

GM模型的几何性质及统计检验

以空间向量几何理论为基础，详细地分析了Ｇａｕｓｓ－Ｍａｒｋｏｖ线性模型的几何性质；在实现了模型图形化描述的基础上，利用各解向量的几何及统计性质构造出了不同情形下的统计检验方法和相应的检验统计量，为全面、深入地研究和灵活运用该模型提出了一种简洁直观的数学方法     

类金刚石膜的制备及其影响因素

概述了近年来制类金刚石膜的新技术如双射频辉光放电（RF－RF）法，射频－直流辉光放电（RF－DC）法和微波－射频（MW－RF）法等，并且对影响类金刚石膜制备及性能的因素如基体材料，制备类金刚石膜时在膜中添加元素，类金刚石膜与基材之间的中间层等进行了较全面的分析。