智能多点润滑系统在烧结机上的应用

鉴于烧结机长期所采用的单线或双线流出式润滑方式，不便于判断加油点是否供油、油量合适与否，维修难度大，经常造成设备因失油而造成故障的问题，重点介绍了智能多点润滑系统在烧结机上的应用。该系统的优点是能实现集中操作、远程控制、单点供油、实时检测供油状态等功能。     

连轧厂高压系统存在的问题及其解决方法

针对连轧厂高压系统目前存在的问题进行分析，找出问题产生的原因，提出解决方法及措施。     

浅谈电炉变压器换档开关

本文主要分析M型带载换档开关结构、工作原理和换档过程的伏安特性，并结合广钢电炉设备多年来的运行和管理情况，提出对M型换档开关的维护和检修意见。     

Criticality and Environmental Uncertainty in Step-Level Public Goods Dilemmas.

The author examined a public goods (PG) dilemma with environmental uncertainty in a sequential protocol of play paradigm. Using a 5-person game, Experiment 1 examined provision point (PP) uncertainty and found that a certain PP requiring 3 contributors produced the PG more frequently than an uncertain PP of the same expectation that varied uniformly among 2, 3, and 4 contributors. Fixing PP at 3, Experiment 2 showed that PG provision rate was higher with a certain group size of 5 persons than an uncertain group size of the same expectation that varied uniformly among 4, 5. and 6 persons. Further analyses showed that a fear of wasting one's contribution and pessimistic beliefs of environmental uncertainty could have undermined contribution. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

ТДГ3．15万kVA主变压器经济运行分析

根据电力变压器功率损耗的分析，找到ТДГ3．15万kVA2台主变压器的功率损耗与负荷率β的函数关系，并对该2台主变压器的经济运行进行了探讨，计算出了经济运行点。     

Reexamining the Vocabulary Spurt.

The authors asked whether there is evidence to support the existence of the vocabulary spurt, an increase in the rate of word learning that is thought to occur during the 2nd year of life. Using longitudinal data from 38 children, they modeled the rate of word learning with two functions, one with an inflection point (logistic), which would indicate a spurt, and one without an inflection point (quadratic). Comparing the fits of these two functions using likelihood ratios, they found that just 5 children had a better logistic fit, which indicated that these children underwent a spurt. The implications for theories of cognitive and language development are considered. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

BOSCH 传感器特性研究及信号调理电路的设计􀀂

在柴油机电控喷油泵中所采用的传感器是德国BOSCH公司的一种位移式传感器,它是电控喷油泵闭环控制系统中齿条位置反馈元件.本文针对该传感器进行了特性测试,并通过实验研究确定了喷油泵内齿条与传感器位置的物理零点,最后对传感器的信号调理电路进行了设计.     

地震检波器阻尼随温度变化的研究

研究地震检波器阻尼随温度变化的规律,测量了不同温度下地震检波器阻尼(系数),通过有关数据分析揭示了地震检波器阻尼随温度变化的规律,给出了典型的响应曲线。探讨了影响阻尼变化即控制其温度响应的主要因素。最后,提出了通过材料温度系数优选组合或采用适当温度补偿系数调整电阻以实现其阻尼温度响应平稳性的对策,并给出了初步实验结果。     

“指针”在RDBS查询语言中的创新应用

在RDBS中,利用SQL语句进行表的相关查询时,通常都是利用相关名的说法来解释。该文引入了“指针”这一其他语言中常用的结构,从另一个角度对相关查询的算法产生和实现做出了更为合理的解释,并且实践效果较好。     

Superior step-size theorem and its application——Parallel variable step-size LMS filters algorithm

In several branches of adaptive filtering algorithms, the least mean square (LMS) algorithm is widely applied in many areas because of its low computational cost, good numerical stability and other features[1]. However, the contradiction between faster convergence and smaller steady-state mean squared error (MSE) affects its performance considerably. Step-size, as the key to the problem, can but offer only one choice of the two demands. Therefore, many variable step-size algorithms were prop…