山西中小企业集群的分级模型及应用

建立了企业集群的分级模型，并在此基础上对山西的企业集群进行了分级测度，通过分析测度结果得到了山西企业集群较为深层次的一些特征。     

晋城市生态绿地系统构建探讨

着眼于晋城市争创国际生态园林城市的战略目标,运用景观生态学的基本原理,对晋城市市域生态功能进行了划分,同时对晋城市生态绿地系统的构建进行了探讨,提出了规划方案及保障生态绿地系统建设的政策措施。     

Integrated Robust Design Method Based on Maximum Tolerance Region

Traditionally,parameter design is carried out prior to tolerance design. However, this two-step design strategy cannot guarantee optimal robustness for products＇ quality. The proposed integrated robust design method determined the optimal parameter and tolerance simultaneously by calculating the maximum tolerance region,thereby improving the quality of products. In addition,the proposed method did not need uncertainty analysis to obtain the maximum tolerance region,so that the calculation cost could be decreased. And the method avoided the difficulty of gaining costtolerance function as maximum tolerance region represented both demand of cost and robust. Finally,an amplifier circuit case was conducted for verification purpose. Based on the results, the proposed approach could provide robust solution with optimal maximum tolerance region.     

非对称时变共因失效的随机冲击-随机阈值模型

发生共因失效时,同一因素对共因部件组的影响既可能因单元而异,也可能随时间变化。针对同时存在非对称性和时变性的共因失效现象,提出“随机冲击-随机阈值”模型,统一解决非对称性、时变性两类问题,并可应用到多共因场景。与共因失效概率仅反映故障模式不同,本模型能深入分析不同原因及影响。以风力发电机为对象,在阈值分布相异,受破坏性作用的风和海浪冲击情况下,验证了模型的适用性。实例证明,“随机冲击-随机阈值”模型为解决非对称性和时变性两类问题,以及单一共因和多个共因2个场景,提供了统一的解决框架。     

丛枝菌根真菌在农业中的应用：研究进展与挑战

 丛枝菌根（arbuscular mycorrhiza，AM）真菌能够和大多数农作物形成互利共生体系，有效改善作物矿质营养，减轻环境胁迫对作物生长的不利影响，提高作物产量和品质。由于AM真菌的功能多面性，其在农业生产中具有潜在重要作用和广阔应用前景。结合AM真菌农业应用技术途径和适用情景，讨论了作物种植制度和管理措施对AM真菌功能的影响及可能的调控途径，分析了菌根技术发展趋势及面临的机遇和挑战，提出加强AM真菌功能多面性及其应用途径优化研究，将有助于促进AM真菌菌剂相关产业的发展以及AM真菌在农业生产中的广泛应用。