九圩港闸闸下兴建桥梁工程模型试验研究

九圩港闸下新建桥梁工程，不能单独从泥沙问题来考虑其影响，还应考虑工程后对九圩港闸引、排水功能以及对闸上已有桥梁工程的影响。通过物理模型试验研究将较好地解决相关难题，为工程决策、设计提供科学依据。研究结果表明，桥梁工程方案实施后潮位最大壅高0．028m，对流速影响较大的范围在桥轴线上下100m之内，对九圩港闸引、排水流量的影响在3％以内。     

太白参的生药学研究

本文首次报道了太白参的植物来源、生药性状、组织结构和有关成分的理化特性,为该药材的鉴定、用药安全及寻找和扩大新药源提供了依据。     

虚拟现实技术在船舶消防领域的应用

该文从工程应用的角度较为详细地介绍了组建船舶火灾虚拟现实系统过程中硬件选型、软件设计和虚拟环境中船舶火灾模型的选取原则等，并建立了基于微型计算机、Windows NT等软硬件环境下的船舶火灾虚拟现实体系结构。     

念动训练法在高校体育教学中的应用

探讨了念动训练在帮助学生学习新动作中的作用,在普通高校体育中推广与实施念动训练法,有助于学生对运动技术的掌握,并养成自觉锻炼的习惯,为终生体育打下基础。     

论体育课中如何培养学生的终身体育意识

体育是学校教育的组成部分,学校体育又是学生终身体育的基础,运动兴趣的培养以及运动习惯与参与意识的形成是促进学生自主学习和终身坚持锻炼的前提。在全面贯彻教育方针,落实素质教育,以提高学生身心素质为根本宗旨的今天,如何体现学生的主体地位,充分发挥学生的学习积极性和学习潜能,提高学生终身体育意识。     

Using a random displacement model to simulate turbulent particle motion in a baroclinic frontal zone: A new implementation scheme and model performance tests

Numerical artifacts can limit accurate simulation of turbulent particle motion when Lagrangian particle-tracking models are implemented in hydrodynamic models with stratified conditions like fronts. Yet, modeling of individual particle motion in frontal regions is critical for understanding sediment dynamics as well as the transport and retention of planktonic organisms. The objective of this research was to develop a numerical technique to accurately simulate turbulent particle motions in a particle-tracking model embedded within a hydrodynamic model of a frontal zone. A new interpolation scheme, the ‘water column profile’ scheme, was developed and used to implement a random displacement model for turbulent particle motions. A new interpolation scheme was necessary because linear interpolation schemes caused artificial aggregation of particles where abrupt changes in vertical diffusivity occurred. The new ‘water column profile’ scheme was used to fit a continuous function (a tension spline) to a smoothed profile of vertical diffusivities at the x–y particle location. The new implementation scheme was checked for artifacts and compared with a standard random walk model using (1) Well Mixed Condition tests, and (2) dye-release experiments. The Well Mixed Condition tests confirmed that the use of the ‘water column profile’ interpolation scheme for implementing the random displacement model significantly reduced numerical artifacts. In dye-release experiments, high concentrations of Eulerian tracer and Lagrangian particles were released at the same location up-estuary of the salt front and tracked for 4 days. After small differences in initial dispersal rates, tracer and particle distributions remained highly correlated (r = 0.84 to 0.99) when a random displacement model was implemented in the particle-tracking model. In contrast, correlation coefficients were substantially lower (r = 0.07 to 0.58) when a random walk model was implemented. In general, model performance tests indicated that the ‘water column interpolation’ scheme was an effective technique for implementing a random displacement model within a hydrodynamic model, and both could be used to accurately simulate diffusion in a highly baroclinic frontal region. The new implementation scheme has the potential to be a useful tool for investigating the influence of hydrodynamic variability on the transport of sediment particles and planktonic organisms in frontal zones.     

船舶机舱虚拟现实仿真系统

提出并实现基于虚拟现实技术的船舶轮机仿真系统.给出应用于船舶轮机仿真的虚拟立体视觉图象生成算法,研究了使用立体眼镜和立体头盔视觉设备的虚拟现实系统的实现.讨论了虚拟机舱漫游、虚拟船舶驾驶台和虚拟集控室等船舶仿真系统.     

舰船维修虚拟训练平台建模方法研究

文章以模块式建模思想为指导,采用实例化、外部引用等技术,在虚拟现实建模软件MultiGen Creator Pro和Vega平台上,实现了导弹护卫艇和潜艇的快速建模。     

虚拟仿真技术在舰船研制评估中的应用研究

首先介绍了仿真技术、虚拟现实技术及虚拟仿真的概念;同时对虚拟仿真技术在国内外舰船研制中的发展作了阐述;最后用实例说明虚拟仿真技术在舰船研制评估当中的应用,并提出了以虚拟仿真为基础的舰船研制评估的系统结构.     

锰毒作用表现的研究

调查研究表明，慢性锰中毒早期主要表现为类神经征，继而出现锥体外系神经受损症状，肌张力增高，手指明显震颤，腱反射亢进，并有神经情绪改变。严重患者锥体外系神经障碍恒定而突出，表现为帕金森样症状。锰中毒患者的肌电图、脑电图、气脑造影、脑血流图、脑CT和MRI均有不同程度的改变，为临床诊断提供了较多的参考依据，同时也为现行的锰中毒诊断标准提供了新的内容。