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Search Results: 1 - 10 of 360613 matches for " 王春学 "
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高效节能三功率电动机

地质与勘探 , 1984,
Abstract: 三功率电动机适于野外地质队使用.钻机、水泵、机修用的各种车床,探矿用的提升运输设备,其运行负荷变化很大.因为半负荷或三分之一负荷运行的设备大约要占80%或更多,所以设备运行效率极低,用电浪费大.提高电动机有用功率、减少无功消耗的唯一途径,是使运转电动机的容量接近外界载荷,从而使电动机的功率因数cosφ保持在0.85以上,只有这样,电动机才能有较高的效率.遵循这一原则,我们设计了三功率电动机.
自动调功三功率电动机组

煤田地质与勘探 , 1991,
Abstract:
克拉玛依石化工业园污水处理厂曝气生物滤池工艺除磷效果分析
Analysis on the Effect of Dephosphorization by Biological Aerated Filter Process in Sewage Treatment Plant of Karamay Petrochemical Industrial Park
 [PDF]

刘兵伟, , 李娟,
Water pollution and treatment (WPT) , 2015, DOI: 10.12677/WPT.2015.31001
Abstract:
克拉玛依石化工业园污水处理厂采用气浮、S3D加三级生物滤池工艺,处理后的出水要求达到《城镇污水处理厂污染物排放标准》(GB18918-2002)一级A的标准,即处理后的总磷要求达到0.5 mg/L以下。结合污水处理厂的实际工艺,重点研究了系统的化学除磷和生化混合除磷,对以后类似的工艺运行具有参考意义。
The sewage treatment plant of Karamay petrochemical industrial park uses flotation, S3D and three-stage biological aerated filter process; the treated water has reached level A standard of the “Urban Sewage Treatment Plant Pollutant Discharge Standard” (GB18918-2002), meaning that the total phosphorus after treatment are less than 0.5 mg/L. Combined with actual process of the se-wage treatment plant, this paper focuses on chemical dephosphorization system and biochemical mixed dephosphorization, having reference significance to the later similar process.
《分子生药学》课程教学改革与探索
Reformation and Exploration of Teaching Molecular Pharmacognosy
 [PDF]

白贞芳, ,
Advances in Education (AE) , 2015, DOI: 10.12677/AE.2015.54015
Abstract:
分子生药学是近年来兴起的一门新课程,作者通过近年来对该课程在教学大纲、教学内容、教学方法及考核方式等方面的改革和探索,初步形成了适合中药专业学生的《分子生药学》课程教学模式和教学体系。
Molecular pharmacognosy is a new course in recent years. By improving and exploring teaching programme, teaching contents, teaching methods, and assessment methods, we have formed the model and system of teaching molecular pharmacognosy fitting students of Chinese medicine spe-cialty.
尾矿库设计和运行管理问题探讨
The Discussion on Tailings Designing and Operation
 [PDF]

, 海春, 张玉坤
Mine Engineering (ME) , 2016, DOI: 10.12677/ME.2016.43014
Abstract:
基于承德市尾矿库病害事故统计分析,指出当前尾矿库设计和运行管理中存在的问题,从设计和管理方面提出对策措施,防范各类生产安全事故发生。
Based on accident statistics of Chengde City tailings disease, this paper points out the problem of tailings in designing and operation and suggests some measuresfrom designing and operating, to prevent accidents of the tailing ponds.
中国近50a积雪日数与最大积雪深度的时空变化规律
,李栋梁
冰川冻土 , 2012,
Abstract: 通过REOF和非参数Mann-Kendall趋势检验法,以1958/1959-2007/2008年度中国557个气象台站的积雪观测资料为基础,对中国积雪日数与最大积雪深度的时空演变规律进行分析.结果表明东北、新疆北部和青藏高原中东部为中国积雪日数和最大积雪深度的3个大值区;近50a来,春、秋季中国积雪日数和最大积雪深度在整体上呈现缓慢减少的趋势,冬季积雪日数和最大积雪深度呈现增加的趋势.气温是影响积雪产生和维持的重要因素.
基于TLD的物体自动识别系统
The Automatic Object Detection System Based on TLD Framework
 [PDF]

, , 谢敏, 昌栋
Computer Science and Application (CSA) , 2016, DOI: 10.12677/CSA.2016.64031
Abstract: 大数据时代下随着计算机数据处理能力的提高,传感技术、音频技术、自动化控制技术得到不断地发展,视频帧和图像信息作为人类通过客观世界获得信息的主要来源之一更是得到了诸多的重视。如今计算机视觉作为当下研究的热潮之一,拥有诸如识别、运动、场景重建、图像恢复等众多技术挑战。其中又以物体识别最为重要。与此同时,众多的物体识别系统却仅仅侧重于物体识别的精度而缺乏其他辅助功能的实现,如何拥有更好的人机交互以及更广阔的市场前景的物体自动识别系统是当下众多开发者所探讨的。在本文中我们将物体识别与语音处理相结合,首先在物体识别算法Tracking-Learning-Detection (TLD)的基础上进行改进,以给定的一类物体的图片数据集为基础,训练出适合于识别该类物体的分类器,从而判断新的物体是否为目标物体,实现对指定一类物体的识别;同时该系统将以语音识别作为人机交互的基础,使用户可以利用语音将图片数据添加到训练集中并更新分类器,同时采用动态规划的方式(DTW)对语音特征进行匹配从而保证了语音识别的准确度。
With the enhancement of the data processing ability of computer, the technology on sensor, audio and automation control has been developed continuously, and the information in video frames and image has got a lot of attention, which is one of the main sources that human obtain information from the world. Computer vision, as one of the present research upsurges, has many technical challenges such as detection, motion, scene reconstruction and image restoration. Object detection is one of the most important challenges. Although there are plenty of object detection systems with high accuracy rate of detection in the market, they lack realization on auxiliary functions so that they provide poor experience on man-machine interaction. Therefore, many developers focus on the topic that how to design a better man-machine interaction of detection system for human so that the detection system can be accepted widely. In this paper, we propose a system framework which contains the technology on object detection and voice processing. Firstly, we make improvement on the algorithm of Tracking-Learning-Detection (TLD). We use the image sets of the object which we want to detect to get a suitable classifier by training algorithm. Then, we can use the classifier to determine whether the new object is the target object and get the aim of detecting the specified object. Then, the system contains the module of speech recognition for a better man- machine interaction so that the user can add the image data to the data set and update the classifier by voice. In order to guarantee the accuracy of speech recognition, we use the Dynamic Time Warping (DTW) to match the phonetic characteristics.
基于EPIC模型的黄土高原旱地草粮轮作田土壤湿度模拟
,李军,郝明德
草业科学 , 2010,
Abstract: ?土壤水分是黄土高原地区粮食生产的关键因子,EPIC模型自建立以来在世界范围内得到了广泛的应用,是研究土壤水分动态的有效工具,因此,在黄土高原地区验证EPIC模型的土壤湿度模拟精度对该地区土壤水分的模拟研究具有重要的现实意义。本研究应用长期定位试验观测值和EPIC模型对草粮轮作田[苜蓿(Medicagosativa)-苜蓿-苜蓿-苜蓿-马铃薯(Solanumtuberosum)-冬小麦(Triticumaestivum)-冬小麦-冬小麦]土壤湿度进行了模拟研究。结果表明,在苜蓿草地、冬小麦田和马铃薯田中0~2.0m土层土壤湿度的观测值和模拟值相关系数分别为0.756、0.973和0.790,RMSE值分别为0.028、0.011和0.023m/m;模拟值与观测值的土壤湿度剖面分布总体上一致。EPIC模型能够较好模拟草粮轮作田土壤水分的动态变化规律,可以用来模拟研究黄土高原草粮轮作田土壤水分动态变化及其土壤湿度的剖面分布。建立合理的土壤数据库和作物根系分布方程将会进一步提高模型对土壤湿度的模拟精度;增加模型中的土层数有利于提高模型对深根系作物土壤湿度的模拟精度。
近50年黄河流域夏季降水的时空变化及其与东亚副热带西风急流的关系
邵鹏程,李栋梁,
高原气象 , 2015, DOI: 10.7522/j.issn.1000-0534.2013.00194
Abstract: 基于1959-2008年黄河流域92个测站降水量和NCEP/NCAR再分析资料,研究黄河流域夏季降水的时空变化和周期特征,及其与东亚副热带西风急流的关系。结果表明,黄河流域夏季降水呈现由东南向西北逐渐减少的分布特点,其夏季降水的异常空间型主要有3种:全流域一致型,东南多(少)西北少(多)型,西南多(少)东北少(多)型。当夏季东亚副热带西风急流中心异常偏北(南)时,同期黄河流域中上游地区降水偏多(少),下游降水偏少(多);东亚副热带西风急流中心异常偏东(西)时,黄河流域上游降水偏多(少),中下游地区降水偏少(多)。
分子生药学课程探析
,
中国中药杂志 , 2011,
Abstract: 作者从教学的角度,针对分子生药学课程在本科、研究生等不同层次的教学需求,结合分子生药学的学科特点,总结分析了分子生药学课程总体概况,详细剖析和归纳了分子生药学课程的三大特点、基本研究内容与任务、学习方法等,展望了分子生药学的发展方向和态势;其目的是简明扼要的让学生对分子生药学课程有一个明晰的、总体的认识,以期达到分子生药学课程教学推广的作用。
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