草地螟吊飞及脂肪含量的初步研究

通过１９８９、１９９６年对草地螟吊飞和脂肪含量的研究表明：（１）草地螟是迁飞性害虫。与稻纵卷叶螟等三种水稻害虫相比较，其飞行能力较强且以３日龄蛾最甚；（２）草地螟飞行时消耗体内脂肪；（３）经测试脂肪含量证明，１９８７年内蒙古呼伦贝尔盟三个旗（县）峰期蛾不是由西部越冬基地四子王旗迁飞去的。     

水稻稻飞虱迁飞的研究进展

稻飞虱是目前影响中国水稻生产的主要害虫之一。其迁飞行为是生物进化、环境胁迫（特别是食料不足）共同作用的结果,包括起飞、飞行和降落3个阶段,受生理、生态、虫源等多方面因素的影响。迁飞过程与天气系统、气象条件、地理特点等因素相关,其中低空急流可以作为监测稻飞虱迁飞的预警参数,与虫情结合可以预测稻飞虱迁入区。迁飞参数化和模型可以较精确地阐明稻飞虱迁出起飞、空中飞行、降落迁入等迁飞行为的动力学机制,模拟其虫源地、飞行高度、迁飞历时、飞行轨迹等,为预防预测稻飞虱提供了科学依据。     

COMPUTER ANIMATED DISPLAY AND ITS APPLICATION IN MODAL ANALYSIS

This paper expounds a method of realizing animated display of structure model by computer animation at the request of test model analysis. The following problem have been discussed. They are the construction of structural geometric model,data processing and interchanging, two dimensional graphical display of three dimensional structure and the generation of computer animation.     

河西走廊东部大风日数时空分布及其对沙尘天气的影响

为揭示大风日数的时空演变规律及其对沙尘天气的影响,更好地防御和减轻风沙灾害。笔者利用1971—2010年河西走廊东部4个气象站大风、沙尘暴、扬沙观测资料,采用气候统计学方法,对河西走廊东部大风日数时空演变及与沙尘暴和扬沙日数的关系进行分析。结果表明:近40年河西走廊东部年大风日数以10.77 d/10 a的速率显著减少;四季年大风日数亦均呈显著减少,递减率夏季最大,冬季最小;年、季节大风日数随年代增加呈减少趋势;大风日数春季最多,秋季最少,4月最多,9月最少。大风日数的空间分布与海拔高度、地形地貌有很大关系,高海拔山区大风日数最多,北部荒漠区以及浅山区较多,绿洲平原区最少。近40年河西走廊东部年沙尘暴和扬沙日数均显著减少。年大风日数与年沙尘暴和扬沙日数呈极显著正相关,其相关系数分别为0.878和0.888;大风日数随时间的变化对沙尘日数随时间的变化具有显著正作用,大风日数的减少可能是沙尘日数减少的主要原因之一。     

Current Development of Hand-painted Pastel Animation Short Film

With the rapid development of audio-visual language, production of traditional hand-painted animation has failed to keep pace with the times. This paper discussed the current foreign and domestic researches on animation, and found that the researches still focused on application of technology or theories of animation arts. The study tried to integrate traditional hand painting with computer technology, produce hand-painted pastel animation, enrich the artistic forms of hand-painted pastel animation short fi lm, improve the effi ciency of handpainted pastel production, so as to form a complete artistic realization theory system of hand-painted pastel animation short fi lm, and provide a technological and theoretical support for the development of traditional hand-painted animation.     

Application of Hand-painted Pastel Art in Animation

Hand-painted pastel art enriches the expression ways of light-colored painting, so pastel art makes progress and has new expressions in hand-painted animation to further demonstrate unique visual effect of hand-painted animation. By enriching techniques and forms of hand-painted arts in animation, and displaying diversified styles of hand-painted animation arts, aesthetic significance of animated films will be realized.     

Expression of National Cultural Elements in Ancient Costume Animation Movie Scene

In Chinese ancient costume animation movies, there are problems of unreasonable cultural expression in many architectural scenes, such as not meticulous scene design and weak understanding of the relationship between artistic design and image cultural expression. This is greatly different from the spirit of passing on national ethnic culture. In order to transform such situation, it is recommended to set up the concept of passing on the ethnic culture, follow the principle of creation of national art and practice of story creation, improve the style of domestic animation movies, and raise the concept of cultural creation.     

Realization Approaches of Hand-painted Pastel Art in Animation

In view of status quo and prospects of hand-painted animation,it is an important topic to promote the development of hand-painted animation,achieve its unique artistic effect,explore the approaches of realizing hand-painted pastel animation,grasp spiritual connotations of hand-painted pastel art in animation,and maintain the artistic vitality of hand-painted animation.This study focused on expression means of various arts,enriching artistic means of producing hand-painted pastel animations,improving the efficiency of hand-painted pastel animations,so as to form a complete artistic realization theoretical system of hand-painted pastel animations,and provide a technical and theoretical foundation for the development of traditional hand-painted animations.     

Flash动画在中国农民科普教育中的应用研究

Flash动画是数字科普最常见的形式和实现方法之一,利用Flash动画的技术、制作和传播优势,笔者探讨以家庭为单位的科普教育新模式,提高农民科学文化素质。以北京市郊区县农民为例,对当前农村科普教育的手段和形式进行了调研,分析比较了Flash动画在农村、农民科普教育中的受众对象和应用效果;针对农户的年龄和家庭结构,提出了利用Flash动画形式以家庭为单位进行科普教育的新模式,作为中国农民科普教育形式的有益补充,并提出了具体的推进措施。     

Fast Animation Display of Large Structure with Multistep Modes

The method that the MASM assembler is interlaced to the MS-FORTRAM 5. 0 is used to store some step structural mode drawings in the designated disk file through their visiting VRAM,which are then restored in it when needed in order to realize the quick animation display of the mode. This method solves the problem of insufficient memories in storing multistep structural mode drowings with the ordinary method. As a functional modular of finite element analysis programs SAPS and ADINA transplanted to a microcomputer,the modular programed with the above method can quickly display the animation of large structure with multistep modes.     

亚洲型舞毒蛾中国地理种群飞行能力初探

为了探究亚洲型舞毒蛾的飞行能力,以采自河北和内蒙两地的亚洲型舞毒蛾为试验对象,应用昆虫飞行信息系统,分析亚洲型舞毒蛾的最大飞行速度、累计飞行距离和累计飞行时间。结果表明：亚洲型舞毒蛾雌雄个体间飞行能力有显著差异,雄虫比雌虫具有更强的飞行能力,雄虫平均累计飞行距离为6.76 km,雌虫平均累计飞行距离为1.85 km;1日龄成虫已具备较强的飞行能力,在飞行时间、飞行距离上,雌虫随着日龄的增长呈现出明显的线性下降趋势;交配对雄虫的飞行能力无显著影响,雌虫产卵后飞行能力明显下降。     

Relationship between Grain Yield and Remotely-Sensed Data in Wheat Breeding Experiments

Data from aerial infrared photographs have recently been proposed as a complementary analytical tool for evaluating genotype performance in breeders' trials. Our objective was to establish the relationships between spring wheat grain yield and remotely-sensed data in a variety experiment. Large genotype differences (P ≤ 0.05) in grain yield, red, and near infrared reflectance values occurred. Significant (P ≤ 0.05) regressions between grain yield and remoteley-sensed data were observed for two dates of flight, but these functions varied between dates of flight. A normalized difference vegetative index, as an estimate of crop productivity, indicated that spring wheats with the highest grain yields may show correspondingly high dry matter production. However, low r² values for the remotely-sensed values suggest that much of the variability is not explained by these models. Future research must develop more accurate methods of remotely-sensed analysis, including standardizing the images, identifying the correct time with respect to stage of crop development for infrared photographs, incorporating crop harvest index data into the models, and adjusting for identified spatial variation.     

航天搭载对冬瓜诱变效应的初步研究

为创新冬瓜种质资源,本试验以冬瓜自交系B98的干种子为材料,进行航天搭载处理。对航天搭载SP1代的生物学效应和变异频率等进行了研究。结果表明,对比相应的原始材料,航天搭载处理SP1的可溶性固形物含量、瓜形等性状发生了变异,总变异频率为11.77%,表明航天诱变能促进冬瓜产生变异,出现了瓜形和皮色变异。利用自交纯化的SP6株系BH1配组杂交,选育出一个优良组合P5。     

Construction of 3-dimensional formation flight model and adaptive robust control

The relative motion model of UAVs formation flight is constructed with tensor analysis, and the system energy function is constructed with the estimations of the external disturbances during flight. According to Lyapunov stability criterion, an adaptive robust control law is presented to keep the UAVs formation flight. The research results show that the proposed UAVs formation flight tensor model has broad applicability, and provides new ways to the further research of the UAVs formation flight as well as new ways to overcome the computing problem resulting from the singular point of the body frame, while the proposed control law is simple and effective.     

空间诱变对紫花苜蓿过氧化物同工酶影响

为了探索空间谤变环境对紫花苜蓿生理生化活动的影响,本研究分别利用分光光度计和聚丙烯酰胺垂直板电泳法对卫星搭栽紫花苜蓿过氧化物同工酶酶带及酶浓度进行研究.结果表明,经过卫星搭载后,紫花苜蓿过氧化物酶活性提高18％,这可能是由于种子在飞行过程中受到重粒子辐射、微重力、极端温度等特殊环境刺激,使得种子内部活性氧大量累积,从而导致过氧化物酶活性上调.同时电泳结果还发现,搭载后过氧化物酶酶带发生显著变化,表现为新酶带的增加,这表明空间飞行因子不仅可以刺激酶活性的上调,还可以改变酶组成.这一发现初步揭示了卫星搭载对苜蓿酶活动的影响,有助于增加对苜蓿空间诱变效应的认识.     

铁路沿线沙生植物种子风传扩散的数值风洞模拟

为了研究铁路沿线沙生植物种子风传扩散机制所体现出的生态适应策略,本文以辽西北铁路沿线沙区段5种蒿属植物为研究对象,借助流体动力学方程和计算机图形学技术,采用数值风洞方法,模拟预测了在不同风速及释放高度条件下各物种种子扩散时间和扩散距离的变化趋势。软件模拟结果表明,（1）在释放高度和风速条件相同的情况下,5种蒿属植物种子的飞行时间和飞行距离与种子重量表现出相反的趋势,即随着种子重量的增大,其水平飞行时间和飞行距离减短。（2）在释放高度相同风速条件不同的情况下,5种蒿属植物种子的飞行时间和飞行距离与风速表现出相同的趋势,即种子的飞行时间和飞行距离随着风速的增大而增加。（3）在风速条件相同释放高度不同的情况下,5种蒿属植物种子的飞行时间和飞行距离与释放高度表现出相同的趋势,即种子的飞行时间和飞行距离随着释放高度的增加而增加。种子重量、风速及释放高度是影响种子扩散时间和扩散距离的敏感因素,在铁路沿线沙化地区筛选适宜的植物防沙措施进行生态修复的同时应结合考虑这些影响因素。     

虚拟植物的发展概况与应用

近三十年来,随着计算机技术的发展,虚拟植物的研究取得了显著进步,已经成为精准农业的一项核心技术,并在多个领域中得到了广泛的应用。本文概述了虚拟植物的发展历史和近年来的研究现状,并根据现有的技术缺陷分析了虚拟植物未来的发展方向,最后介绍了虚拟植物在科学实验、精准农业、教育培训和动漫影视中的实际应用。     

Speedy Recognition of Noise in Real Time Signal Based on Wavelet Transform

It's necessary to process position and gesture of rocket on real time within the flight of rocket. This work should base exact data. But much noise has been found in the data and the noise recognize is regarded as a focus. A speedy online arithmetic recognizing noise is proposed based on wavelet transform. The computing complexity measured by time of this arithmetic is a constant which is greatly reduces the works of calculation of wavelet transform. It can recognize the noise fast when the signal is gathered. The applications in these problems show that the effective arithmetic satisfies the needs of real time and can handle the real time data measured in other yields.     

Diving speed and food-size selection in common guillemots,Uria aalgae

Results of choice experiments showed that guillemots Uria aalge prefer sprats Sprattus sprattus of a body depth of 16 to 17 mm. This is notably smaller than the maximum size that guillemots are able to swallow (body depth about 44 mm). A small proportion of the selected fish was used for display on the breeding ledge; these were significantly bigger than those preferred for consumption.Mean velocity during horizontal underwater flight was 2.18 m·s⁻¹, with the maximum recorded being 2.57 m·s⁻¹. This is considerably faster than the speed of any prey.