水尺标志勘划与吃水量计

文章指出准确勘划船舶水尺标志和量计船舶吃水的重要性,并提出水尺标志勘划与吃水量计的方法。     

水尺标志勘划与吃水量计

文章指出准确勘划船舶水尺标志和量计船舶吃水的重要性,并提出水尺标志勘划与吃水量计的方法。     

船舶水尺计重精度的影响因素与解决对策

船舶水尺计重的计算结果可用来进行商品交接、结算、理赔、核算运费等等。对于检验鉴定的工作人员而言,应该做好提高水尺计重精度,降低水尺计重误差工作,以便能够维护承运人、发货人以及收货人各方的利益。水尺计重的过程中,很多方面的因素会对计重结果的精准度造成影响,本文分析了影响水尺计重精度比较重要的因素,并提出了相对的措施。     

数显自动量水尺的研制

文章介绍研制了一种能数字显示的自动量水尺的自动测量数据,并能自动下放和收起尺砣的船舶压载水便携测量尺。     

全站仪在水尺校测中的应用技巧

水文测验断面水尺容易变动需要经常进行校测,原有水准测量的方法具有局限性。应用全站仪进行水尺高程校测,减少了三角高程的误差来源,使水尺高程测量精度进一步提高,施测速度更快。     

消除水尺检验程序的差异─—ISO／DIS14247出台

消除水尺检验程序的差异─—ＩＳＯ／ＤＩＳ１４２４７出台水尺检验（ＤｒａｕｇｈｔＳｕｒｖｅｙ）是确定水运统装低值货物重量的最通用的方法之一，也是称量统装煤炭的最通用的方法。水尺检验方法的理论基础是浮力定律，它是２２００年前古希腊的数学家兼发明家阿基米德...     

2008年统计从业资格考试《统计基础知识与统计实务》试题（下）

三、判断题(判断对错,请将答案填写在题干后面的括号内,正确的划"√",错误的划"×";10道题,每题2分,共20分) 1.选择两个或两个以上的标志,对同一总体进行的重叠分组,称为复合分组.( ) 2.平均指标是把一个总体内各单位在某个数量标志上的差异抽象化,以反映总体的一般水平的综合指标.( )     

试论现代船舶涂装技术的重难点

现代化船舶涂装技术的进步与发展是现代化造船事业发展的重要标志之一,在船舶建造过程中对船舶的船体、附件以及船室等进行喷砂、打磨等工序,务求能达到除锈、去疤与除污的要求后,再对船舶表面进行涂漆施工的工艺称之为船舶涂装技术.探究现代化船舶涂装技术的重难点,对于促进现代造船工程的发展具有重要作用.     

试论现代船舶涂装技术的重难点

现代化船舶涂装技术的进步与发展是现代化造船事业发展的重要标志之一,在船舶建造过程中对船舶的船体、附件以及船室等进行喷砂、打磨等工序,务求能达到除锈、去疤与除污的要求后,再对船舶表面进行涂漆施工的工艺称之为船舶涂装技术。探究现代化船舶涂装技术的重难点,对于促进现代造船工程的发展具有重要作用。     

基于保障安全的基本水尺断面混凝土冻融修复研究

以北京市密云水库张家坟水文站基本水尺断面混凝土冻融修复为例,介绍了工程修复准备,并对张家坟水文站基本水尺断面混凝土冻融修复进行了工程条件分析,并严格遵照修复设计依据制定了修复工程方案并实施.可以看出,对于长期运行的水工建筑物,进行常态化的工程修复非常必须,尤其是北方地区混凝土冻融破坏,更要从工程安全、迎汛安全、供水安全...     

Estimating and Testing Process Precision with Presence of Gauge Measurement Errors

Process capability indices have been widely used in the manufacturing industry. Those capability indices, quantifying process potential and performance, are important for any successful quality improvement activities and quality program implementation. Because of the simplicity and easy of understanding, the precision index C_p has gained its popularity for measuring process consistency. However, the quality of data on the process characteristics relies very much on the gauge measurement. Conclusions about capability of the process just only based on the single numerical value of the index are not reliable. In this paper, we not only conduct the performance of the index C_p with gauge measurement errors, but also present adjusted confidence interval bounds and critical values for capability testing purpose of C_p with unavoidable measurement errors. Our research would help practitioners to determine whether the factory processes meet the capability requirement, and make more reliable decisions.     

用螺纹量规检测产品产生争议时的解决方法

本文分析了检测结果合格的螺纹量规检测螺纹产品时出现的疑问,并解答这些疑问。     

基于HOUGH变换的航空仪表自动识别

本文针对航空指针式仪表自动读取中的指针提取提出了一种基于HOUGH变换的指针式仪表示值精确判读方法,用改进的HOUGH变换算法,大大提高了HOUGH变换直线提取的运算速度,降低了占用内存,同时减少了直线误匹配的机会,实现指针式航空仪表读数自动识别。     

精密测长机在测量小尺寸标准环规中的应用

本文主要介绍测长机用单球头测量小于12mm的标准环规方法和测量精度。对于提高制造质量、实际生产具有一定的指导意义。     

价值工程在流量计中的应用

运用价值工程的原理,对主导产品——玻璃转子流量计产品进行价值分析,降低了材料与能源消耗,提高了劳动生产效率,因而取得了较好的经济效果.     

Evaluating the Gauge Repeatability and Reproducibility for Different Industries

Measurement plays a significant role in Six sigma program. Usually, the gauge repeatability and reproducibility (GR&R) study needs to be conducted prior to the process capability analysis for verifying the accuracy of measuring equipments and helping organizations improve their product and service quality. Therefore, how to ensure the quality of measurement becomes an important task for quality practitioners. In performing the GR&R study, most industries are using the acceptance criteria of Precision to Tolerance(P/T) ratio as stipulated by QS9000. However, the adequacy of applying the same acceptance criteria to different manufacturing processes is very questionable. In this paper, a statistical method using the relationship between GR&R and process capability indices is proposed for evaluating the adequacy of the acceptance criteria of P/T ratio. Finally, a comparative analysis has also been performed for evaluating the accuracy of GR&R among three methods (ANOVA, Classical GR&R, and Long Form). Hopefully, the results of this research can provide a useful reference for quality practitioners in various industries.     

Optimization of rain gauge networks—A systematic literature review

Rain gauge is the standard instrument for ground-based precipitation measurements and rain gauge networks play an important role in the monitoring of disasters caused by heavy rainfall, such as flooding and landslides. Many authors have contributed to the research of sophisticated methods and techniques for the design of optimal rain gauge networks, including guidelines for the placement of the devices based on the meteorological and physiographic factors of the study area, however, there is not a consensus on the best procedure to locate these equipment. In fact, there is a rapid growing interest and need for the improvement of monitoring networks and the optimization algorithms and solvers allowed a rapid evolution toward more efficient models. This study presents a systematic literature review (SLR) of studies on the optimization of rain gauge networks using the PRISMA protocol, detailing the study areas, methods, datasets and models used. To the best of authors’ knowledge, the latest thorough SLR on this subject was published in 2009 by the time of development of the authors’ research, however, the amount of research on this topic has grown significantly since then and optimization techniques have undergone a compelling evolution. Results indicate a wide variety of applications, objectives, methods, models and algorithms aimed at optimizing rain gauge networks. Conclusions are drawn in the light of the opportunities for future research on this topic.     

简易水位显示装置中JAG-5型干簧管的应用

文章介绍如何以比较经济的费用,利用廉价的干簧管制作实用的水位显示装置,以便随时掌握水池的储水情况。该装置结构简单,取材方便,一般的技术工人即可加工制作,很适合县级以下建有高位水池的水厂使用,也适用于测量抽取地下水的水厂使用。