一种新的机顶盒缓存控制算法

结合视频点播系统中的一种存储与传输技术，分析并介绍了一种机顶盒功能的实现方案，研究了机顶盒视频点播缓存控制问题并提出了一种控制算法。     

用冠接法建立橡胶优良有性系种子园研究初报

用冠接法建成93-114×PR107,天任31-45×PR107组合种子园,可分别提早2～3年和1～2年开花结果,是建立优良有性系种子园快速、有效的方法。     

对海峡西岸经济区新战略与新农村建设的认识

围绕“新”进行深入的分析，对区域发展战略的历史进行对比，分析海峡西岸经济区建设的新战略，提出海峡西岸经济区新农村建设具有的新内涵，最后阐述了海峡西岸社会主义新农村建设的特色。     

浅谈仕嘉名苑住宅小区景观设计

在设计中通过对各宅间不同场所的空间塑造,营造出一个清新宜人,舒适和谐的居住环境。在整个项目实施过程,运用植物与矮墙营造适合于现代人对居住环境的要求。运用植物的品种和色彩营造各具特色的宅间绿化风格。     

Comparison of the influences of vegetation stem parameters on hydraulic variables and sediment transport capacity

The hydraulic variables (Hv) and sediment transport capacity (Tc) of overland flow have changed immensely due to large-scale revegetation. However, research comparing the influences of stem parameters (diameter, cover, and arrangement) on Hv and Tc is limited. The objectives of this study were to explore and compare the influences of stem parameters on Hv and Tc. Data on three treatment groups with varying stem diameters, covers, arrangements, flow discharges and slopes were collected in this study. With increasing stem diameter, Hv and Tc increased; Hv included the Reynolds and Froude numbers, flow velocity (v), shear stress (τ), stream power (Ω), and unit stream power (ω). However, the trend of the Darcy-Weisbach friction coefficient (f) was opposite. Hv and Tc were significantly influenced by stem diameter and cover. The effect of stem diameter on Hv and Tc was greater than the effects of cover and arrangement. Stem cover as a variable could not be used to adequately estimate the Tc when there were various stem diameters. A new exponential equation involving stem cover and stem diameter was demonstrated to be an appropriate predictor of Tc. Stem diameter and arrangement had no obvious influence on the relationship between Tc and v, and v as an indicator could explain the effect of stem parameters on Hv and Tc. This result could illustrate why the variables, including v, were able to predict Tc under vegetation stem and litter cover.     

高大钢板平房仓地上笼机械通风技术的应用试验

结合本地气候与储粮特点进行高大钢板平房仓地上笼机械通风技术应用试验。结果表明 ,在冬季干冷天气相对较短的时间内 ,采用间歇式机械通风 ,能够取得较好的通风降温效果 ,其单位能耗可控制在 0 .0 4kW·h/℃ t以内。粮温梯度由 1℃ /m降为 0 .4℃ /m粮层厚度 ,粮食水分梯度由 0 .15 % /m降至 0 .0 5 % /m ,粮堆温度和水分分布更加均匀 ,对安全储粮更为有利     

Robust Adaptive Control Based on On-line Identification to Multi-parameters

In system controlled,Sampling these parameters and with parameters for controller in time, it is an object to adaptive control. The article presents a scheme that the structure parameters on it's model and model parameters is robust identified by on line, while to optimal of algorithm on adaptive control is fulfilled. In control scheme, method of intelligent identifying to the structure parameters(levels of model) and algorithm of robust pole placement are introduced also It is advancer for already mentioned scheme. Whole scheme presents new model on adaptive control.     

‘滇重楼’地上茎叶可利用性分析

为了研究‘滇重楼’地上部分的有效利用,在武定、云龙和马关3个‘滇重楼’主产县,从8月到11月逐月采取地上茎叶估测产量,采用气相色谱法测定茎叶中重楼皂苷Ⅰ、Ⅱ、Ⅵ、Ⅶ、PA及H的含量,分析各种成份的变化规律。结果表明地上茎叶干物质产量约900.0 kg/hm2,其总皂苷含量与地下根茎相当,可以入药;地上茎叶总皂苷主要成分是重楼皂苷Ⅱ和重楼皂苷Ⅶ,不含重楼皂苷H和重楼皂苷PA,也与地下根茎皂苷组成相近,可取得同样的药效;地上茎叶入药,新增产值2.7万元/hm2;开花植株地上茎叶皂苷含量比未开花植株高;果皮重楼皂苷的含量较高。‘滇重楼’地上茎叶可入药,可显著提高种植效益,促进产业发展。     

试论中共领导核心关于粮食思想的继承和创新

“民以食为天,食以粮为源”。抓好粮食这个基础性、战略性资源的生产和供应,对中国这个人口大国的重要性不言而喻。通过评述中共领导核心关于粮食问题的忧患意识,既归纳了他们在处理粮食与工业的关系方面所持政策思想的传承性,即坚持农业的基础地位不动摇;又分析了中共领导核心紧扣中国国情,在调动农民的生产积极性方面所提出的办法以及在如何加快粮食增长方面所采取的方式,他们的粮食政策思想有颇多创新之处;在对中共领导核心粮食思想进行比较论证的过程中,提出了在保持农业政策连续性和稳定性的基础上,依据国内外形势变幻不断创新粮食理论的观点。     

陕北和关中退耕还林工程综合效益评价

综合评估退耕还林效益是工程持续推进的重要依据。基于陕北黄土高原地区和关中平原2000-2015年退耕还林现状,应用层次分析法和加乘综合法,从生态效益、社会经济效益和政策响应三方面定量分析陕北和关中退耕还林综合效益。陕北和关中的退耕还林综合效益走势基本一致,呈现稳定上升态势,从2008年开始效益值为正,2000—2005年效益值连年上升,2006年略微下降,之后效益增长显著。最大值出现在2012年分别为0.2669和0.2008。退耕成果逐渐显现,开始享受退耕带来的益处。