梁柱连接计算方法的演变

本文回顾了钢框架梁柱刚性连接计算方法国内外的发展情况,介绍了我国沿用至今的常用设计法和存在的问题,系统介绍了日本1998年提出的新思路和新方法,也介绍了日本2001年对此法的修改和简化说明。此法概念清晰,安全可靠。计算表明,它应用简便,极具实用价值。     

LOGO在精洗机输送带上的应用

介绍了西门子LOGO控制器及其在精洗机输送带上的应用,认为LOGO的应用大大简化了系统硬件结构,具有很高的可靠性。     

Chemometric analysis of combined NIR and MIR spectra to characterize French olives

Chemometric treatment of near‐infrared (NIR) and mid‐infrared (MIR) combined spectra was used firstly to predict oil and water contents in fresh olive fruit samples (n = 223) and secondly to classify these samples into five principal French cultivar origins (Aglandau, Cailletier, Olivière, Salonenque, and Tanche). The study was carried out during four crop years (2005/2006 to 2008/2009) to take into account the seasonal variations. The comparison of the results obtained in the combined range (REP = 2.6% for the water content and 3.5% for the oil content) provides an obvious advantage compared to the NIR and MIR techniques used separately. Fresh olive fruit cultivars were satisfactorily classified with the partial least squares‐discriminant analysis (PLS‐DA) method in the combined range. After use of the K‐means clustering on the PLS‐DA scores, all the samples were well classified into their five groups of origin. The use of infrared combined spectra allows a considerable improvement in estimating olive fruit quality (oil and water contents, varietal origins).     

LOGO!在消防控制柜中的应用

介绍了一种西门子公司生产的带编程的超小型可编程控制器LOGO！用于大楼消防控制柜的设计方案。     

基于LOGO的浮选药箱液位控制

本文围绕浮选生产中浮选药箱的液位控制问题,作出了功能分析与设计,充分利用了LOGO这种简洁、廉价的控制器予以实现,在浮选生产中非常实用。     

LOGO!在矿用电磁起动器中的应用

由于煤矿井下条件恶劣 ,多数矿井含有瓦斯气体 ,容易引起爆炸。所以 ,对矿用电磁起动器的要求十分严格 ,这就极大地限制了它的推广使用。介绍一种新型器件LOGO !(Siemens公司生产的通用逻辑控制模块 ) ,在矿用电磁起动器中的应用。     

消防水压力控制系统的设计与改造

针对山西天脊潞安化工有限公司消防压力控制系统设计中的缺陷与问题,经过现场检查确认,在工艺与电气部门配合下,对自控系统进行技术改造,达到了预期消防水压力的控制要求.     

LOGO!在轨道交通直流牵引监控系统中的应用

简要的介绍了轨道交通变电所综合自动化系统及其直流牵引系统的整体结构，并根据实际需求，给出了LOGO!在北京某轨道交通直流牵引监控系统的具体解决方案，最后给出了LOGO!的优点及其不足之处。     

Learning LOGO: effects on learning BASIC and statistics

Abstract Two experiments were conducted to examine the effects of a period of training in the use of the turtle graphics aspects of LOGO on both attitudes towards computers and the learning of BASIC and statistics. A group of 15 subjects spent 10 hours learning LOGO . Their performance on subsequent learning of BASIC was significantly better than that of a control group, but no differences were found in attitudes towards computers or in the learning of statistics.