评价适合选育加工型马铃薯品种的杂交组合

中国马铃薯的种植面积和产量均占世界首位,随着人们生活水平的提高和饮食结构的改善,以及外资企业在中国的纷纷建厂,对食品加工型马铃薯品种的市场需求日益增加,食品加工型马铃薯品种的培育已成为当务之急。本文根据食品加工型马铃薯品种的6项选育指标(炸制品质、薯形、产量、大中薯率、抗病性、熟期),对14个马铃薯杂交组合进行单个指标的评价和组合的级别评价,最终确定组合F81109×B5141-6、B5141-6×F58050、F67128×F61101、F49013×F61101、F71002×F59103可作为选育食品加工型马铃薯品种比较有前景的杂交组合。     

蒙特卡罗模拟信号交叉口的服务水平

信号交叉口是城市路网的节点和交通关键，其服务水平反映了交叉口所提供的道路及控制条件满足交通顺畅、安全等需要的程度。本文提出一种基于蒙特卡罗模拟的信号交叉口运行状态描述和服务水平评价方法．为优化信号交叉口控制参数提供依据．     

科技是云南草地畜牧业可持续发展的关键因素

针对云南草地资源的现状及面临的问题，进行了草地畜牧业持续发展综合配套技术的研究，试验、示范、推广效果突出、效益明显，从而提出了科技是草地畜牧业可持续发展的基础和关键因素，以及加快科技推广的一系列建议。     

CVT起步离合器模糊控制算法研究

探讨了汽车无级变速器控制的关键技术之一———汽车起步离合器的控制技术,并针对汽车起步时条件的多样性以及驾驶员意图的不确定性,研究了适用于复杂条件的模糊控制算法.在离合器的滑磨阶段,把动态跟踪发动机转速的油压作为控制目标,离合器结合的控制便转化为一闭环控制.结果表明汽车能在任意工况下平顺快速起步.因此,本研究为控制CVT(Continuously Variable Transmission)起步离合器这种时变、非线性系统提出了一种简单可行的解决方法.     

高等院校学生“团队工作”能力培养模式构建及其绩效评价研究

阐述“团队”、“团队工作”理论内涵,详述学生“团队工作”能力培养模式的四个阶 段、主要内容和阶段目标,并初步确立团队工作效绩评价的指标体系和评估方法。     

重油催化再生器典型缺陷安全评定

应用断裂力学理论和实验技术,测定了重油催化再生器材料及焊缝的力学性能和断裂韧度值,按照《压力容器缺陷评定规范》(CVDA-84)对再生器下部筒体典型缺陷进行了评定。经分析计算获得了重油催化再生器下部筒体各部位各种裂纹类型缺陷的允许尺寸,可将其作为重油催化再生器无损检测时的缺陷评定指标。     

河南省农业综合生产能力的评价研究

本文建立了农业综合生产能力的评价指标体系，讨论了两种评价方法，并通过计算机测评系统，对河南省农业综合生产能力进行了系统的测算和分析。     

The study on site quality evaluation for dahurian larch (Larix gmelinii Rupr.)

Site quality of larch (Larix gmelinii Rupr.) in Da Xingan Mountain in Inner Mongolia was studied systematically with about 1000 temporary plots and computer software. The nature of site class and site index curve was discussed in view of general mathematical model of height growth. The height growth of dominant tree of four divisions of forest stands were studied and site index tables were constructed respectively. In order to unify the comparing standard and convenience for management in this region, site index table was constucted too. Based on discussing the action and accuracy of forest type, a series of site quality evaluation (forest type-site index class-site index) was suggested. This subject of study is supported by the National Natural Scientific Fund (No. 39270549).     

Effect of mate selection on fuzzy selective mating criteria in closed dairy multiple ovulation and embryo transfer nucleus programs

In order to control rates of response and inbreeding, mate selection using fuzzy selective mating criteria (FMC) was investigated in adult multiple ovulation and embryo transfer nucleus schemes for dairy cattle. Stochastic simulation was used to model the closed nucleus scheme. This mate selection was examined in four alternative mating and male selection schemes: (i) a hierarchical scheme; (ii) a hierarchical sibship scheme (two males per sibship); (iii) a factorial scheme (two sires per dam); and (iv) a factorial sibship scheme (two males per sibship and two sires per dam). Genetic response and inbreeding rate tended to be reduced by increasing the trade-off parameter of FMC between the expected breeding value and inbreeding of progeny. Inbreeding rates in all schemes were reduced by reducing the variance of family size through selection and the average coancestry of mating pairs through mate allocation.     

甘薯新品种综合评价初探

对福建省新育成甘薯品种应用灰色加权关联度分析法进行综合评估，旨在鉴定新品种在丘陵旱地的适应性以及探讨出一种比较适宜的品种评估方法。结果表明，龙薯1号、莆薯41和泉薯647比较适应东南沿海丘陵旱地生产条件，评估结果与品种的实际表现比较一致。