查询词典 position paper

This paper introduces the general structure of a small unmanned helicopter with taking-off weight 120 kg,describes the principle of the automatical driving system for this kind of helicoper,and proposes the use of the core sensor- position gyro ,for the system.

介绍了起飞重量为120 kg的小型无人直升机总体结构布局，简述了该飞机自动驾驶系统的工作原理，提出了要采用自动驾驶的核心感应器——姿态陀螺。

This paper,based on the special assets theory and in view of the judgment of the interests incurred by sunk cost,analyzes the relationships between the access barriers and the division of markets and examines the decided cases related to the relatively dominant position theory In this author's opinion,this theory has severe defects and bugs.

依据对资产专用性理论，从沉没成本引起的利益判断、进入障碍和市场划分的关系的分析，以及对相对优势地位理论的相关判例的解析，可以看出该理论存在重大的缺陷，其实施不仅无法规范市场竞争秩序，还会造成理论和实务上的混乱。

The title and bill of material in engineering drawings are important data source for product data integrated management. In order to reuse the CAD data, the paper presents an effective method for extracting part information from existing engineering drawings. Through analyzing the format of title and bill of material, several shape-position characteristics of tables are summed up from the view of macro-layout and microstructure. A new method to automatically extracting drawing information based on cell-grid and feature-point is proposed along with its algorithm principle and implementation steps. A software package based on the method mentioned above is developed and used in practice.

1引言工程图是工程设计的主要成果和制造加工的主要依据，CAD软件的广泛应用使得传统上对于纸质图纸的管理模式转变为对大量电子文件的管理模式·由于文件系统在实际应用中不能适应复杂大规模的管理模式，已经出现了各种各样的图档管理系统[1]·工程图中包含的零件信息在表现形式上体现纸格式的标准化为批量提取数据提供了可能性·作为计算机处理的对象，图纸信息自动识别成为数据管理和系统集成的一项关键技术·当前CAD管理系统所处理的数据对象比较复杂，面临由不同企业使用不同的绘图软件生成的图纸，其中的标题栏和明细栏或者由软件自动生

This paper launches a comparison from four different aspects—position of ET, department offered, instruction of students and popular research courses—between the majors in China and those in the top-rank universities of the USA who is the most highly developed in the world, in order to locate some factors that result in the problems in the ET field of China.

本文从学科定位，系所设置，人才培养以及研究领域等四个方面对全美一流的教育技术专业学科与我国的专业进行了比较研究，力图找出导致我国本学科目前问题的因素。

The transverse mode distribution of THz wave near the position of focus point was studied in this paper.

研究了焦点位置附近太赫兹波的横模分布，目的在于了解系统中太赫兹波的横向分布情况，为进行太赫兹光谱和成像实验提供依据。

The coming forth of virtual prototyping technology presents a new approach to study gun stability, and based on establishment of dynamic model of selections of structure parameters, the effects of stiffness and damper of elevating mechanism, stiffness and damper of trail, stiffness and damper of soil, parity of recoil mass and parity of trunnion position on firing stability are first studied with virtual prototype of gun in this paper. An improved equation of sensitivity analysis is provided, and the important degrees of factors with different dimensions can be compared.

虚拟样机技术的出现为火炮射击稳定性研究提供了新的方法，文中在建立火炮动力学模型的基础上，通过选取火炮结构参数对火炮射击稳定性进行研究，利用虚拟样机分析高低机刚度和阻尼、大架刚度和阻尼、土壤介质刚度和阻尼、后坐品质偏心和耳轴位置偏心对火炮射击稳定性的影响。

Effect of the relative position for the central line of the tube mill and the reduction unit has been investigated in this paper.

分析了磨机和减速机对彼此中心线的影响因素；安装时磨机和减速机中心线相对位置的三个观点：居于同一轴线，减速机低于磨机，减速机高于磨机。

Based on Prandtl's momentum transportation, this paper calculates in detail the physical quantities such as eddy viscosities, and ratio of eddy viscosity to motion viscosity, total stresses with respect to relative position in three regions of viscous sub-layer, buffer layer, and main turbulent stream for non-Newtonian fluid flowing turbulently in ducts, which according to Karman's three layer models and measurement of fluid parameters in evaluation apparatus, discusses the influence of polymer drag reduction on flowing properties of non-Newton fluid, analyzes quantitatively principle of turbulent reduction phenomenon and condition of increasing reduction rate.

摘要以普兰德动量传递理论为基础，按照卡门的三层模型，通过室内模拟环道用0号柴油及加入减阻剂在圆管内的流动参数的测定，计算了非牛顿型流体管内湍流边界层的层流内层、过渡层、湍流中心的涡流粘度，涡流粘度与运动粘度比、总应力随相对位置的变化等定量参数，探讨了高分子减阻剂对非牛顿流体流动特性的影响，对湍流减阻现象的机理与增大减阻率的条件进行了定量分析。

Based on actual hydro-electric generating set, this paper studies horizontal dynamic Characteristics and dynamic response under the unbalanced force, analyses the stability and the position of the most adverse reaction.

本文针对实际机组，通过建立机组动力学模型，深入研究了大型水轮发电机组轴系的横向动力特性和不平衡力作用下的动力响应，分析机组的稳定性和最不利反应位置。

Because of the importance of the detection of R-wave position, this paper also proposed a filtering method for exercise ECG signal, which is based on Wavelet Transform and Stein's Unbiased Risk Estimate. Our experimental results demonstrate that the myoelectric disturbances and baseline drift in EECG signal can be removed efficiently, which affords the solid foundation for the further evaluation and study of people's sub-healthy state in various vocations.

此外，由于心音和心电的所有参数分析都是基于心电R波的正确定位后进行的，作者结合小波变化和似然无偏估计，提出了运动心电信号的伪差消除法，经过实验论证，本算法能有效消除运动心电信号中的基线飘移和肌电干扰，为进一步研究分析评估不同行业人群的亚健康状态提供了新途径。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。