index selection

The results of this study indicate: ( 1) Index selection is more efficient than tandem selection or independent culling levels.

比较了逐项选择法、独立淘汰水平法、估计指数法和基本指数法四种不同选择方法的选择效率。试验表明，指数选择法最为有效，基本指数法和估计指数法同样有效。

Model for Index Selection Based on SQL Server

基于Sql Server的索引选择模型

Those statistics are used to aid in index selection, not for predicate rearrangement.

那些统计数据用于协助索引选择，而不是谓词重排。

Excellent clones are selected for Beijing, through the economical weights analysis and index selection of industrial timber properties such as volume increment, timber total density, fiber length and stem straightness. The comprehensive breeding gain of industrial timber can be higher than 20%.

经过材积生长量、木材全年密度、纤维长度、主干通直度性状经济权重分析和指数选择，为北京点选出8个优良无性系，平均综合育种增益达20%以上。

The economic losses due to grassland degradation was estimated based on ecological characteristic analysis and typical index selection.

根据草原生态功能的特点和资料的可靠性，选择典型指标，对锡林郭勒草原退化的经济损失进行估算。

Genetic Study and Superior Provenance Selection of Loblolly Pine for Pulpwood ⅱ. Indirect and Index Selection for Superior Provenance

火炬松种源遗传变异研究及纸浆材优良种源评选Ⅱ.间接选择和指数选择

Study on the. genetic test and synthetic index selection for half-sib progeny forests of Cunninghamia lanceolata

杉木半同胞子代林的遗传测定和综合指数选择

The traffic safety evaluation process, evaluation index selection and quantitative evaluation method for expressway speed limiting control are presented.

运用交通冲突理论和微观交通仿真技术对限速模型进行安全评价，提出了高速公路限速控制的交通安全评价流程、评价指标选择和量化评价方法。