高校ESP图书资料建设与导读推广——结合华南师范大学增城学院“一体两翼”人才培养模式

＂一体两翼＂是华南师范大学增城学院人才培养模式,ESP是该模式一个培养内容之一。图书馆是一个图书的汪洋,图书馆的图书资料建设必须要有针对性,面对着高校蓬勃发展起来的ESP教学,图书馆需要加强相关方面的图书资料建设。学科馆员是这些图书资料的推荐者、导航者,如何结合自己的专业知识为学生的阅读进行指导深化服务,这是许多高校学科馆员正在研究讨论的问题。这是一个图书馆能否得到充分利用,能否将它的价值发挥得淋漓尽致的问题。下面就结合ESP教学来讨论图书馆的相关资料建设和学科馆员的阅读指导职能。     

Topography from single radar images

A mathematical theory and a corresponding numerical procedure have been developed to produce digital topography from radar images as digital photometric arrays. Thus, as radargrammetry is to photogrammetry, so radarclinometry is to photoclinometry. Photoclinometry encompasses a fundamental indeterminacy principle even for terrain that is homogeneous in normal albedo, because the surface normal consistent with a given reflected specific intensity is not unique. A geometric locus of such normal directions is implied, which generates a surface. For microwave backscatter, in specific application to radarclinometry, this surface is a cone whose half-angle is the incidence angle, whose axis contains the radar, and whose apex coincides with the terrain point. Although the indeterminacy can be removed if a properly directed profile of ground truth is available as a constraint, such is seldom the case. In its absence, an auxiliary assumption, such as that the strike line runs perpendicular to the illumination line, is needed. If metric integrity is a goal, then this is an absurd assumption. Herein, "the hypothesis of local cylindricity" has been assumed, a premise regarding the nature of topographic curvature that seems more realistic and that makes possible the production of topography as a set of parallel line integrals.     

Simple telemetering system for signaling high rumen pressures

The construction of a modified Hartley oscillator transmitter activated through a pressure switch is described. When this device is placed within the rumen of a cow which is allowed unrestricted movement in the pasture, frequency-modulation signals are transmitted to a recording receiver whenever a preselected pressure is exceeded. The pressure at which transmission begins is determined by the capacitance across the coil of the circuit.     

不同授粉时间对西葫芦种子数量与质量的影响

于西葫芦开花当天进行人工授粉,探讨授粉时间对种子数量及质量的影响．结果表明,单瓜结实数上午8:00授粉的种瓜结籽数量多,10:00与6:00授粉的差异不显著,与12:00授粉的相比差异极显著,12:00授粉的结籽数量少;种子千粒重,以12:00授粉的最大,6:00,8:120和10:00授粉的种瓜千粒重差异不显著;种子发芽率、发芽势和活力指数6:00最高,8:00和10:00授粉的差异不显著,12:00授粉的最低,与其他时间授粉差异极显著．     

海门山羊笔料毛的纤维组织结构

为揭示海门山羊羊毛纤维结构特征及其与工艺性能的关系，在屠宰海门山羊时将烫退的羊毛晾干后分拣归类，分为３类，一类毛为粗毛，表面鳞片呈鱼鳞状，毛干中心充满大量髓质；二类毛虽然也属粗毛，但鳞片呈片断形（近似长方形），毛干中心的髓腔细小，髓质较少；三类毛的上、中、下３段分别具有细毛、两型毛、粗毛的特征，其鳞片分别为环形、混合型和鱼鳞形，毛干中心上段透明或呈点状髓，中段髓腔细小，髓质较少，下段充满髓质。     

水稻联合收获机双电机履带式底盘设计与驱动功率试验

我国南方水稻收获季节正值高温,为减轻人工劳动强度,水稻联合收获机智能化是重要发展方向,为此设计了一种拟用于中小型智能水稻联合收获机的双电机驱动履带式底盘,主要由电机、蜗轮蜗杆减速器、电瓶、增程器、传动轴、驱动轮、支重轮、浮动轮、托轮以及张紧装置组成,履带接地长度1.14 m、轨距0.9 m、履带宽度0.4 m,采用2个直流永磁无刷电机驱动,总功率6 kW。基于Zigbee搭建了远程遥控系统,以自行设计的基于霍尔传感器非接触测功系统对该底盘两侧履带电机驱动功率进行检测;以底盘质量和行走速度为试验因素,基于MATLAB/SIMULINK对履带式底盘单侧驱动功率进行仿真试验、以测功系统得到的信号作为试验指标开展田间试验。结果表明,直行速度对功耗影响显著;整机质量对功耗影响显著;随整机质量增加,该机传动系统功耗损失相对减小;随直行速度增加,传动系统功耗基本保持不变;该底盘可满足实际生产需要。     

Geometry, topology, and universality of random surfaces

Previous simulations of a self-avoiding, closed random surface with restricted topology (without handles) on a three-dimensional lattice have shown that its behavior on long length scales is consistent with that of a branched-polymer. It is shown analytically that such a surface with an unrestricted number of handles has a qualitatively different geometry and therefore is in a different universality class. The effect of a net external pressure is to suppress the handles and collapse the surface into a branched polymer-like configuration. Topology is thus shown to be a key factor in determining the universality class of the system.     

Studies of the putative transforming protein of the type I human T-cell leukemia virus

The putative transforming protein of the type I human T-cell leukemia virus (HTLV-1) is a 40-kilodalton protein encoded by the X region and is termed p40XI. On the basis of both subcellular fractionation techniques and immunocytochemical analysis, it is now shown that p40XI is a nuclear protein with a relatively short half-life (120 minutes). It is synthesized de novo in considerable quantities in a human T-cell line infected with and transformed by the virus in vitro, and it is not packaged in detectable amounts in the extracellular virus.     

Research on Power Circulation in of a front Wheel Assist Tractor

Base on dynamic analysis for a Front Wheel Assist(FWA) tractor,a method of calculating and analyzing on the critical angle of steering for a FWA tractor is described in this paper,The mathematical model is also established here.The critical steering angle which is a important parameter affecting the steering performance for a FWA tractor is defined in the article.     

液体沿固体边界无滑移假设的实验根据

研究固体壁面润湿特性对液体运动的影响问题，在工程实践和理论研究方面都具有重要意义，分析了牛顿液体粘性系数测量，速度剖面测量，管道水力阻力实验以及倾斜面上球状凝结和膜状结等典型流动的实验结果，表明除了高浓度聚合物溶液精况不清外，还未发现经过严格论证的由滑移引起的异常效应，相反，却证明了壁面润湿无可测性影响，说明流流的壁面滑称一般可忽略不计，液体沿固体边界无滑移假设一般是正确的，讨论了Ｍａｘｗｅｌｌ－     

线性支持向量分类机优化问题解的二阶充分条件

优化问题的二阶充分条件是研究灵敏度分析的基础,支持向量机是数据挖掘的新方法。针对线性支持向量分类机优化问题,研究了其解的二阶充分条件,给出了二阶充分条件成立的假设条件。研究表明,该假设条件很弱,用支持向量机算法求解实际问题时,通常假定这一条件成立,特别地,对线性可分支持向量分类机优化问题,其解一定满足这一条件,满足二阶充分条件成为当然成立的事实。     

辣椒果实的生长发育规律及其对种子质量的影响

辣椒果实的生长发育是“S”形曲线。30天左右可达到商品成熟,45天即可红熟。40天果龄的种子才具有发芽力,在不经过后熟情况下,刚具发芽力的种子与红熟果实种子的发芽情况差异不显著。后熟对种子质量具有明显促进作用,但不同成熟度的果实,最佳后熟期不同。果实大小与种子数、种子重呈显著正相关;大果实的种子质量优于小果实的种子质量;果实在植株上的分布不同,对种子质量也产生很大影响。     

南瓜不同时间授粉对种子数量与质量的影响

南瓜当天开花全部采用人工授粉,探讨不同授粉时间对种子数量及质量的影响。结果表明,单瓜结子数,上午7:00授粉的种瓜结子数量多,9:00与5:30授粉的差异不显著,与11:00授粉的相比差异极显著,11:00授粉的结子数量少;种子千粒重,以11:00授粉的最大,5:30,7:00和9:00授粉的种瓜千粒重差异不显著;种子发芽率、发芽势和活力指数,5:30授粉的最高,7:00与9:00授粉的差异不显著,11:00授粉的最低,与其他时间授粉差异极显著。可见南瓜最佳授粉的时间是上午5:30到7:00。     

The process of formation of ocean crust

Ocean crust is the outermost layer of earth under the oceans. It is separated from the underlying mantle by a seismic transition zone called the Moho. A widely held view is that the Moho represents a petrologic change from basaltic-type rocks to a mantle composed mostly of olivine and pyroxene. According to this view, crust is formed by a steady segregation of basaltic melt, derived from partial melting of the mantle, into a crustal magma chamber wherein cooling and crystallization bring about steady-state accretion to the continuously spreading plates. There is sufficient disagreement between the predictions of this hypothesis and marine geophysical data to cause one to doubt the validity of this formation process. At least two other processes are more compatible with the geophysical data. In one, the crust is formed from the episodic injection of basaltic dikes from a mantle reservoir and the Moho is a primary petrologic boundary. In the other, the crust is treated as a mechanical boundary layer in which thermal contraction results in cracking; by comparison, in the mantle thermal contraction is accommodated by flow. The upper part of the crust is formed from episodic extrusion and intrusion of basaltic melt. The lower crust is formed by rapid hydrothermal alteration of mantle that may be continuously or episodically injected by viscous flow at temperatures below the melting temperature.     

Bounded transparency for automated inspection in agriculture

In agriculture, a major challenge is to automate knowledge-intensive tasks. Task-performing software is often opaque, which has a negative impact on a system’s adaptability and on the end user’s understanding and trust of the system’s operation. A more transparent, declarative way of specifying the expert knowledge required in such software is needed.We argue that a white-box approach is in principle preferred over systems in which the applied expertise is hidden in the system code. Internal transparency makes it easier to adapt the system to new conditions and to diagnose faulty behaviour. At the same time, explicitness comes at a price and is always bounded by practical considerations. Therefore we introduce the notion of bounded transparency, implying a balanced decision between transparency and opaqueness. The method proposed in this paper provides a set of pragmatic objectives and decision criteria to decide on each level of a task’s decomposition whether more transparency is sensible or whether delegation to a black-box component is acceptable.We apply the proposed method in a real-world case study involving a computer vision application for seedling inspection in horticulture and show how bounded transparency is obtained. We conclude that the proposed method offers structure to the application designer in making substantiated implementation decisions.     

论中国电影的书法审美

书法是中国最为独特的艺术形式之一,在中国电影尤其是古装影片中是必不可少的组成部分。书法在电影中一般有两种审美表现形式:一种是作为背景镜头,另一种是作为特写镜头。书法作品不仅是一种道具,它还是时代、文化、修养、人格的标志。     

林纸结合—林纸一体化经营模式山林折价方案研究

本文根据中国集体林区特点,提出林纸结合——林纸一体化经营模式,阐述了建设3.5万吨胶印新闻纸厂与划定和建设20万亩造纸林基地同步发展的设想,遵循林纸利益均衡原则,选择股份制形式,提出林地和林木折股折价入股的原则和方法,给出了计算公式,论证了林纸联合的可行性和可操作性的模式。     

关于玉米生长、糖分输运和干物质分配的数学模型

把一个植株看成是由几个隔室组成的动态系统,并对各隔室的光合产率和化学反应速率作出合理的假设,就可根据物质守恒原理对此系统建立一个以隔室体积 V_i 和糖浓度 C_i为因变量的动力学方程式组。用欧拉法对此方程式组进行数值积分,就可以一举而模拟出植株生长、蔗糖输运、蔗糖浓度分布和干物质分配等随时间而变化的历程。试算结果说明,只要适当地调整方程式中的参数值,就可以在计算机上生长出合理的株型和果穗,其它各方面的情况也与实际情况定性地符合。     

论述竞争情报与当今社会的密切关系

竞争情报是一种过程,是一种产品,既是一种过程又是一种产品。在当今社会高速迅猛发展的时候,竞争情报凸显出一种不可替代的重要性,它被社会引导着向前发展,同时也带动着社会向一种更科学的方向前进,所以竞争情报与当今社会保持着一种密切的关系。阐述了竞争情报的科学概念和理论基础,同时研究了竞争情报与社会的关系和发展趋势,最终达到让人们清楚地认识到竞争情报的重要性、科学性。     

Laplacian谱半径和阶数相等的c圈图

设G是1个无向的简单图,ν表示G的阶数,mG(ν)表示ν作为G的Laplacian矩阵的特征值的重数.得到了Laplacian谱半径等于阶数的所有c圈图,研究了c与mG(ν)之间的关系.给出了当G是森林、单圈图、双圈图、三圈图、四圈图时mG(ν)的取值范围,并确定了mG(ν)(≥1)在该取值范围内取不同值时的所有图.