近红外光谱分析技术的研究与应用     

杨琼  项瑜  杨季冬 《四川三峡学院学报》2013,(3):89-91

基于重庆市高校创新团队＂近红外光谱检测技术研究及其应用＂的建设与发展,重点介绍了近红外光谱分析技术的发展,研究了近红外光谱分析技术在三峡库区特色资源的快速检测的应用.  相似文献   

基于分形的快速最大熵红外图像特征检测     

谭晓静 《重庆师专学报》2013,(5):119-123

文章针对红外图像目标检测问题,提出一种基于分形的快速最大熵的红外图像特征检测算法.该算法利用DBC方法计算分维数,根据人造物和自然背景分形维差异,确定目标区域;最后,通过二维最大熵原则确定最佳阈值,实现对单目标或者多目标图像分割.该算法能够较好实现红外图像特征检测,有效抑制背景和噪声.  相似文献   

电动书架控制系统的设计与实现     

梁盈富 《金华职业技术学院学报》2013,13(3):44-47

针对设计的一种电动书架,开发了其电气控制装置,使书架能够实现旋转运动、上下移动、到位检测和报警功能。完成了该书架控制系统的软件和硬件设计,对书架的运动控制采用红外遥控的控制方式,编制了遥控解码程序。结果表明,该控制系统能够使书架稳定运行,为人们的使用提供了极大的方便。  相似文献   

把“实干兴邦”的理念融人高职院校的科学发展中     

张文娟 《天津成人高等学校联合学报》2013,(4):3-5,30

“实干兴邦”是科学发展观的“压船石”,是实现“中国梦”的根本途径。“实干兴邦”就是强调“把理论和行动统一起来,做到内化于心外化于行”;“有方向,不争论,埋头干”;“为官一任,造福一方”;“执政者要强化品德修养,堂堂正正做人,踏踏实实做事”。要把这些理念融入到高职院校的科学发展之中,用每个高职教育工作者的行动和一个个具体成果去圆国家和学院的发展“梦”。  相似文献   

基于“项目引领、任务驱动”的“磁法勘探”教学模式研究     

陈载林  王建飞  于秋莲 《中国地质教育》2013,22(1):75-77

为了提高学生的兴趣,增强学生对知识的理解能力,培养学生的动手能力,探索一条适合磁法勘探工学结合、理实一体教学模式的道路。我们对＂磁法勘探＂课程教学模式进行大幅度的改革,将整门课程划分为8大项目33大任务,将学生引领到任务中来,在提高学生的动手能力的同时也加强了学生理论联系实际的能力、分析解决问题的能力,符合高等职业教育的理念。  相似文献   

如何制定小学语文单元知识网络图     

李娜 《大连教育学院学报》2013,(4):32-33

制定单元知识网络图,旨在明确每个单元、每篇课例“教什么”“学什么”的内容,尝试“怎么教”“怎么学”的有效方法,以其提高教学质量。  相似文献   

应用改性粉煤灰处理含铅废水的研究     

杜凤智  魏利滨 《唐山学院学报》2013,26(3):55-57

对改性粉煤灰处理含铅废水进行了实验研究,结果表明,对铅离子的去除效果优于等量未改性粉煤灰和活性炭。吸附时间、废水的pH值、吸附剂用量、温度以及废水中Pb2＋浓度都能影响改性粉煤灰的吸附效果。最适宜的吸附条件是：在室温,pH=8．0,吸附剂用量为1．0g,Pb2＋含量小于0．005mol／L,吸附15min时,改性粉煤灰对废水中Pb2＋的吸附达到饱和。  相似文献   

Sensemaking and crisis revisited: the failure of sensemaking during the Flint water crisis     

William D. Nowling  Matthew W. Seeger 《Journal of Applied Communication Research》2020,48(2):270-289

ABSTRACT

This study operationalized Weick’s [(1988). Enacted sensemaking in crisis situations. Journal of Management Studies 25(4), 305–317 and (1993). The collapse of sensemaking in organizations: The Mann Gulch disaster. Administrative Science Quarterly, 38, 628–652] theory of enacted sensemaking to examine the communication processes associated with the Flint Water Crisis of 2014–2015. A content analysis of 389 emails and attachments from a total population of N?=?37,376 pages of publicly released e-mails and documents pertaining to Flint’s water issues, identified examples of failed sensemaking by government officials. These failures hastened and intensified a growing crisis of lead contamination and an outbreak of Legionnaires disease associated with Flint’s municipal water system. Analysis of email messages suggests that strong commitments by top leaders and limited capacity were important factors as were efforts to create and maintain consensus among officials. The Flint Water Crisis offers an important application of sensemaking theory and its utility for both organizational and risk communication scholars and for practical application. The authors emphasize the importance of questioning previous assumptions and commitments, insuring that communication practitioners are involved in decisions, and avoiding over reliance on image repair as a strategic response.  相似文献   

基于HN911的红外线报警系统     

周海波 《长江工程职业技术学院学报》2008,25(3):55-57

阐述了被动式红外线热释电传感器的工作原理,并介绍了一种基于HN911的实用红外线报警系统的结构及原理。  相似文献   

Nineteenth century chrome yellow and chrome deep from Winsor & NewtonTM     

Vanessa Otero  Joana V. Pinto  Leslie Carlyle  Márcia Vilarigues  Marine Cotte 《文物保护研究》2017,62(3):123-149

The Winsor & Newton^TM (W&N) nineteenth century archive database includes digitised images of hand-written instructions and workshop notes for the manufacture of their artists’ materials. For the first time, all 183 production records for yellow lead chromate pigments were studied and evaluated. They revealed that W&N produced essentially three pigment types: lemon/pale based on mixed crystals of lead chromate and lead sulphate [Pb(Cr,S)O₄]; middle on pure monoclinic lead chromate [PbCrO₄]; and deep that contains the latter admixed with basic lead chromate [Pb₂CrO₅]; accounting for 53, 22, and 21% of the production, respectively. Production records for primrose (4%) were also included since the formulation results in mixed crystals with a high percentage of lead sulphate, which, according to the literature, leaves it more prone to degradation. Each pigment type is characterised by only one or two main synthetic pathways; process variations reveal a systematic and thorough search for a high-quality durable product. A comparison of the chemical composition of pigment reconstructions with early W&N oil paint tubes showed that their records entitled ‘pale’ and ‘lemon’ correlated with the pigment in their tube labelled chrome yellow and, ‘middle’ and ‘deep’ with the label chrome deep. Lemon and middle pigment formulations were made into oil paints to assess their relative photo-stability. The degradation process was followed by colorimetry and was studied by synchrotron radiation-based techniques. Based on the X-ray absorption spectroscopy data, the possibility for creating a stability index for chrome yellows is discussed.  相似文献