几种运动生物力学分析系统的研究

本文通过查阅文献,对国内外常用运动生物力学分析应用系统进行研究。对目前几种运动图像分析、三维测力台、步态分析等系统进行介绍,并将几种运动图像分析系统进行简单比较,对如何选用运动生物力学分析系统提供有益的借鉴,同时对目前国内的运动生物力学分析系统的现状做简单总结,并提出了希望。     

运动生物力学中力学和生物学的辩证关系例析

运用运动生物力学知识研究人体运动时,会出现一些力学和生物学之间的矛盾.对这些矛盾进行深入思考和研究,对促进运动生物力学学科的发展具有重要意义.本文通过几个例子来分析两者的辩证关系,说明应用运动生物力学知识分析人体运动,既有力学的特点,又有生物学的特点,两者对立统一.     

运动捕捉技术的跑步运动损伤分析

跑步是重复性较高的运动,对膝、踝关节的损害较大。采用Vicon MX光学运动捕捉系统捕捉人体跑步运动的步态数据,结合生物力学、运动学原理构建膝、踝两关节的运动数据曲线并对特征曲线进行分析,最后得出跑步过程中的半月板、膝关节韧带、踝关节韧带等损伤的影响因素。研究成果可应用于人体生物力学分析及指导健身器械的构建。     

运动生物力学向大众健康发展的趋势研究

对运动生物力学研究现状和发展趋势进行了分析,介绍了运动生物力学的研究内容、运动器械、损伤与康复和大众健身这四方面的研究现状.对运动生物力学向大众健康服务的发展进行了探讨,其研究有向大众健身领域发展的趋势.     

对跳跃运动中几个生物力学概念的再认识

针对田径运动中的跳跃运动技术,对鞭打运动、碰撞运动、平衡运动、抛体运动等生物力学概念进行了归纳和分析.在田径运动训练与教学中,合理运用运动生物力学知识,改进和完善技术动作,优化运动技术方案,有助于提高训练质量和运动技术水平.     

生物力学系统在运动生物力学理论体系中的地位和作用

通过对生物力学系统在运动生物力学理论框架中的位置、简化模型与生物力学系统的异同点、生物力学系统的媒介作用、生物力学系统的核心是复制等问题的分析，阐述了生物力学系统在运动生物力学理论体系中的地位和作用。     

运动生物力学的发展历程与前景分析

通过对运动生物力学的基础理论、研究方法和技术手段等因素进行梳理,回顾运动生物力学的发展历程,对新时期运动生物力学的发展前景进行展望,期望对进一步研究运动生物力学提供参考.     

我国运动生物力学研究现状与分析

采用文献资料法及数理统计法等研究方法,对发表在2007年30多种体育刊物上的运动生物力学类论文共计70篇进行了统计,根据统计数据分析了我国运动生物力学研究现状,并对其发展趋势进行了简要阐述.     

舰船图像序列的电子稳像技术

针对船载摄像系统获取的图像序列抖动的问题,提出一种基于信息融合的电子稳像方法,对因风浪作用产生晃动的视频图像序列进行稳定处理,使输出的视频图像序列稳定而清晰.基于信息融合的电子稳像方法是指在运动估计过程中,对于传感器获取的运动矢量与软件算法获取的运动矢量进行信息融合,得到更为准确和有效的运动矢量,并对视频图像序列进行补偿的一种方法.给出采用软件方法、硬件方法和信息融合3种方法获取运动矢量,进行补偿得到的结果.与参考图像进行比较分析,结果表明信息融合的方法可以使稳定精度大大提高,更适合人眼观察.     

一种图像全局运动鲁棒估计与补偿技术

研究了一种基于回归分析的图像全局运动估计与补偿技术,首先利用光流场法估计局部图像背景点的速度场,然后利用鲁棒的叠代排除法估计图像传感器的全局运动模型参数,再利用估计出来的全局运动参数对图像进行双线性内插运动补偿.这种技术具有计算量少,实现简单,性能可靠等优点.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that