定向对接井靶点测量数据分析方法

采用高精度定向钻探技术及水平定向钻进技术,使地面相距一定距离的两井,在地下目的地层中直接对接连通,这就对靶点数据的测量及分析提出了更高的要求,为了提高定向对接井的中靶率,必须对靶点仪器测量数据进行合理准确的分析。

基于改进三阶段松弛测量-数据包络模型的火电上市公司碳排放效率评估研究

【目的】计算火电上市公司的碳排放效率,对比分析效率排名居后的原因及排名前列的驱动因素,根据差异性条件对火电公司进行分组,探讨造成效率差异的影响因素。【方法】基于非期望产出的改进三阶段松弛值测量(slackbasedmeasure, SBM)-数据包络分析(data envelopment analysis,DEA)模型评估中国火电上市公司2016—2022年全要素碳排放效率。【结果】火电上市公司的碳排放效率逐年递增,并在剔除外部环境影响后整体下降。增加政府环保补贴可能会引发火电公司资本、人员和煤炭过度投入;增加地区研发投入对公司资产、人员和煤耗量具有积极作用;区域经济水平的提高会促进企业资产优化配置和人员有效管理,但会导致发电煤耗量的浪费。【结论】中央实控、低煤耗率和有碳排放交易的火电上市公司技术差距率更高,整体碳排放效率水平更优。

6～12岁学龄儿童体型的数据测量与分析

针对现服装号型标准中的控制部位数据已难以适应当今儿童体型的问题,通过手工和三维人体非接触激光测量方法实际测量了部分儿童的体型数据.并结合问卷调查了这部分学龄儿童及其家长对童装的消费观.最后,运用数理统计方法分析了有关数据,得出了修订童装标准和童装企业销售产品可供参考的资料.

基于Web的白车身三坐标测量数据处理分析系统

利用动态服务器网页技术,开发了基于浏览器/服务器三层网络体系结构的白车身测量数据处理分析系统。详细介绍了系统的体系结构、功能、特点以及实现的关键技术。

基于年龄细分的青年女性身体数据分析

以年龄细分为依据,针对西北地区18～25岁在校女大学生,采用随机抽样的方式,使用目前最先进的德国3D非接触三维人体测量仪进行身体数据采集,并以SPSS11.0数据软件进行分析,得出控制部位相关数值.所得数据可以直接用于原型制板及制作规格尺寸参考,对于女装生产企业具有一定的实用性和参考性.

平面度误差测量及数据处理研究

介绍了平面度误差的评定方法及平面度误差常用的几种测量方法,提出了采用旋转法处理数据,使之符合最小条件,从而计算出平面度误差。

地面三维激光扫描技术在工程测量中的应用

阐述地面三维激光扫描技术的应用流程,并对多次测量数据进行分析,发现基于三维激光扫描技术的测量精度较高、投入成本较低,能满足工程测量的实际需求。

2700 TEU集装箱船轴系干坞校中工艺

本文叙述一种船舶轴系干坞校中的工艺方法。根据施工现场收集到的数据进行分析,验证了坞内进行轴系校中与连轴的可操作性,缩短了船舶出坞/下水后在码头的主机轴系施工周期,具有良好的经济效益。

煤矿采空区上桥梁变形监测

近几年随着交通设施等基础建设项目的增加,经常会在一些容易引发不均匀沉降地质灾害的地段(矿山采空区、溶洞等上方)建设桥梁等重要建筑。如何有效地为基础建设提供保障,并为灾害治理提供合理建议成为测绘行业一个新的研究方向。通过分析在煤矿采空区上进行桥梁变形观测的实例,试图对变形观测的施工方案设计、数据分析的方法进行探讨。

学生体质健康状况形成性评价机制的研究——以厦门医学高等专科学校为个案研究

为了更客观评价学生体质健康状况,有效提高学生体质。本课题采用文献资料法、实验测试法和数理统计分析法,对我校2010级大专护理180名学生4项体质健康指标分两组别三个阶段的测试评价方式进行测评。运用SPSS16.0中一般线性模型(general linear model,GLM)的repeated measures过程对4项体质健康指标重复测量数据的均值进行重复测量方差分析。结果显示:实验组学生的4项体质健康指标重复测量数据的均值高于对照组,说明了阶段性地评价,学生体质明显提高,效果优于终结性评价。构建与实施学生体质健康状况形成性评价机制方案,有效提高学生自主学习,积极主动参与锻炼能力,促进学生全面发展。

简析汽车白车身尺寸开发与控制

汽车白车身尺寸影响到产品的外观品质和整车性能,逐渐受到各个主机厂的重视。在产品开发过程中需要根据市场、用户和性能等方面的要求,制定整车尺寸要求,通过尺寸链分析将整车尺寸要求分解到零部件,制定合理的零部件尺寸和公差,进而制定零部件和白车身工装、工艺和检具的开发策略和尺寸测量计划,对关键的尺寸进行监控和分析,达到白车身稳定控制的目的。

Sediment records of environmental changes in the south end of the Zhejiang-Fujian coastal mud area during the past 100 years

Previous studies carried out in the East China Sea （ECS） mud area focused on long-term environmental changes in sedimentary records during the Holoeene, especially during the mid-Holocene high-stand water levels period. These results indicate that sensitive grain size groups can be used as a sedimentary proxy to reconstruct the evolution of the East Asian Winter Monsoon （EAWM）. The studies have been carried out mainly in the northern and middle portions of the Zhejiang-Fujian coastal mud, however, similar research in the southern portion and the comparison between sedimentary proxy and modern measured data of EAWM are lacking. In this paper, we focused on a sedimentary record of the past 100 years with an enhanced resolution of 1.8 years. Investigations of the southern end of the Zhejiang-Fujian coastal mud area were conducted on the basis of 21~Pb chronology, grain-size analysis and chemical element analysis. The correspondence between the mean grain size （Mz） of sediment sensitive grain size and the measured EAWM was confirmed for the first time. We found that during the recent 100 years, the variation of the mean grain size of the sensitive population in the southern portion of the Zhejiang-Fujian mud was mainly controlled by the EAWM intensity changes; and not directly related to changes in the sediment discharge from Datong station of the Changjiang River （DTSD）. Finally, recent changes in the content of heavy metals in study area reflect the impact of human activities on the environment.

Oil–water two-phase flow pattern analysis with ERT based measurement and multivariate maximum Lyapunov exponent

Oil–water two-phase flow patterns in a horizontal pipe are analyzed with a 16-electrode electrical resistance tomography(ERT) system. The measurement data of the ERT are treated as a multivariate time-series, thus the information extracted from each electrode represents the local phase distribution and fraction change at that location. The multivariate maximum Lyapunov exponent(MMLE) is extracted from the 16-dimension time-series to demonstrate the change of flow pattern versus the superficial velocity ratio of oil to water. The correlation dimension of the multivariate time-series is further introduced to jointly characterize and finally separate the flow patterns with MMLE. The change of flow patterns with superficial oil velocity at different water superficial velocities is studied with MMLE and correlation dimension, respectively, and the flow pattern transition can also be characterized with these two features. The proposed MMLE and correlation dimension map could effectively separate the flow patterns, thus is an effective tool for flow pattern identification and transition analysis.

Evaluation of wind vectors observed by HY-2A scatterometer using ocean buoy observations,ASCAT measurements,and numerical model data

The first Chinese microwave ocean environment satellite HY-2A was launched successfully in August, 201 I. This study presents a quality assessment of HY-2A scatterometer （HYSCAT） data based on comparison with ocean buoy data, the Advanced Scatterometer （ASCAT） data, and numerical model data from the National Centers for Environmental Prediction （NCEP）. The in-situ observations include those from buoy arrays operated by the National Data Buoy Center （NDBC） and Tropical Atmosphere Ocean （TAO） project. Only buoys located offshore and in deep water were analyzed. The temporal and spatial collocation windows between HYSCAT data and buoy observations were 30 min and 25 km, respectively. The comparisons showed that the wind speeds and directions observed by HYSCAT agree well with the buoy data. The root-mean-squared errors （RMSEs） of wind speed and direction for the HYSCAT standard wind products are 1.90 m/s and 22.80°, respectively. For the HYSCAT-ASCAT comparison, the temporal and spatial differences were limited to 1 h and 25 km, respectively. This comparison yielded RMSEs of 1.68 m/s for wind speed and 19.1° for wind direction. We also compared HYSCAT winds with reanalysis data from NCEP. The results show that the RMSEs of wind speed and direction are 2.6 m/s and 26°, respectively. The global distribution of wind speed residuals （HYSCAT-NCEP） is also presented here for evaluation of the HYSCAT-retrieved wind field globally. Considering the large temporal and spatial differences of the collocated data, it is concluded that the HYSCAT-retrieved wind speed and direction met the mission requirements, which were 2 rn/s and 20° for wind speeds in the range 2-24 m/s. These encouraging assessment results show that the wind data obtained from HYSCAT will be useful for the scientific community.

Understanding the YouTube Partners and Their Data： Measurement and Analysis

User generated content,e.g.,from YouTube,the most popular online video sharing site,is one of the major sources of today's big data and it is crucial to understand their inherent characteristics.Recently,YouTube has started working with content providers(known as YouTube partners) to promote the users' watching and sharing activities.The substantial benefit is to further augment its service and monetize more videos,which is crucial to both YouTube and its partners,as well as to other providers of relevant services.In this paper,our main contribution is to analyze the massive amounts of video data from a YouTube partner's view.We make effective use of Insight,a new analytics service of YouTube that offers simple data analysis for partners.To provide the practical guidance from the raw Insight data,we enable more complex investigations for the inherent features that affect the popularity of the videos.Our findings facilitate YouTube partners to re-design current video publishing strategies,having more opportunities to attract more views.

Food Additives-Ascorbic Acid Quality Assay Test Intelligent Management

In this paper, based on the analysis and test methods of national standards （GB 14754-2010） and chemical analysis and test items carried out by chemical enterprises, a set of automatic processing of quality analysis test data of ascorbic acid products was developed by using access database technology and Visual Basic programming language system, and its stability was investigated. The results show that the software can manage intelligently all aspects of the quality analysis and test of ascorbic acid products, uploading timely the data and results of the analysis and inspection to the network and saving it for users, enterprises and quality management, which set up a network of information sharing platform to ensure the authenticity and reliability of measurement results, improving greatly the speed of data processing, saving valuable time, reducing production costs with good economic efficiency and social benefit. It has practical value for ascorbic acid quality analysis test data processing automatically the results of the implementation of intelligent management.

通信电源蓄电池的维护

介绍了通信专用直流电源的实际配置,详细叙述了阀控式密封蓄电池的运行情况和特点,分析了落后电池的成因以及测量数据及时发现落后电池的方法,为解决蓄电池的这一运行难题提供了一种借鉴和经验.

Unprecedented Retreat in a 50-Year Observational Record for Petermann Glacier, North Greenland

Petermann Glacier is a marine-terminating outlet glacier that had a 70 km-long floating ice tongue prior to a ～ 270 km2 calving event that was observed from satellite sensors in August 2010,shortening the ice tongue by ～ 27 km.Further,in July 2012,another 10 km was lost through calving.In order to understand these events in perspective,here the authors perform a long-term data analysis of Petermann Glacier calving-front variability and ice velocity for each year in the 1990s-2000s,supplemented by available observations from the previous three decades.Five major （on the order of 100 krm2） calving events are identified,with ～ 153 km2 calved from 1959 to 1961,～ 168 km2 in 1991,～ 71 km2 in 2001,～ 270 km2 in 2010,and ～ 130 km2 in 2012-as well as ～ 31 k m2 calved in 2008.The increased frequency of major calving events in recent years has left the front terminus position retreated nearly 25 km beyond the range of observed in previous decades.In contrast,stable ice-dynamics are suggested from ice-velocity measurements made each year between 1993-2012,which are on average 1063 m yr-1,with limited interannual variability and no significant trend; moreover,there is no apparent relationship between ice-velocity variability and calving events.The degree to which the massive calving events in 2010 and 2012 represent natural episodic variability or a response to atmospheric and/or oceanic changes remains speculative; however,melt-induced weakening of the floating ice tongue in recent years is strongly suggested.

Simulation of liquid-gas flow in full-scale Caroussel oxidation ditch with surface aeration

A model for liquid-gas flow （MLGF）, considering the flee movement of liquid surface, was built to simulate the wastewater velocity field and gas distribution in a full-scale Caroussel oxidation ditch with surface aeration. It was calibrated and validated by field measurement data, and the calibrated parameters and sections were selected based on both model analysis and numerical computation. The simulated velocities of MLGF were compared to that of a model for wastewater-sludge flow （MWSF）. The results show that the free liquid surface considered in MLGF improves the simulated velocity results of upper layer and surface. Moreover, distribution of gas volume fraction （GVF） simulated by MLGF was compared to dissolved oxygen （DO） measured in the oxidation ditch. It is shown that DO distribution is affected by many factors besides GVF distribution.

Market orientation for the hotel segment： The Portuguese case

In view of the importance of the hotel segment for the tourism and for the economy of countries such as Portugal, the objective of this study was to measure the level of orientation for the market of the largest hotel groups of Portugal. This investigation initially emphasized the importance of the marketing for the organizations, mainly the orientation for the market. After a brief explanation on the hotel segment in Portugal, an empirical study was presented, of quantitative, exploratory and traversal character, performed with the largest groups of 20 hotels of Portugal, using as an instrument of collection data, the traditional Markor scale （market orientation） adapted to the hotel sector. After analyzing the data, it was found in the investigated organizations that a good capacity to generate market information and response to the market, which formed two of the three constructs of Markor scale. However the results obtained with the construct of the dissemination of market information were below the expectations. It was possible to conclude that marketing professionals of the large hotel groups in Portugal are well oriented to the market, something not shared by other investigated departments of the hotels. So the current challenge for the main networks of hotels in Portugal is to improve the internal dissemination of information that marketing professionals gathered at the market.