随着海上风电场规模不断扩大,离岸距离变远,传统的集中式海上变电站面临安装容量过大、建设困难等问题.针对以上问题,引入一种海上轻型变电站,提出基于海上轻型变电站的海上风电场电气系统博弈优化方法.建立基于海上轻型站的电气系统全寿命周期成本模型,提出适用于轻型变电站选址的改进k-medoids聚类方法,对不同电压等级的电气系统进行优化,并基于组合权重法和混合策略对规划方案进行多方博弈评估.以江苏省某海上风电场为例进行分析,结果表明,基于海上轻型站的电气系统博弈优化方案能有效提高海上风电场电气系统的综合性能.

运行环境对海上风电机组状态判别的影响不可忽视，而运行环境因素与风电机组状态变量间耦合关系复杂，文中提出一种基于贝叶斯决策理论和Copula函数的海上风电机组状态判别方法。首先，挖掘运行环境与风电机组状态变量间的相关性特征，分别在风电机组正常和故障两种情况下，利用多元Copula函数构建对应变量的联合密度函数。然后，依托贝叶斯决策理论进行风电机组状态判别。最后，以国内某海上风电场实际运行工况为例进行分析。结果表明：运行环境对风电机组状态判别影响较大，考虑运行环境影响可提高风电机组判别结果的准确率，为利用海上环境因素进行风电机组早期状态预测提供新的参考依据。

Y染色体具有父系遗传的特性.公安机关已建立了Y-STR家系排查方法,用以划定侦查范围、确定犯罪嫌疑人所在的家系.在本文中,技术人员通过Y-STR定位家系,容差推断锁定近亲家系并利用状态一致性(IBS)分析法鉴别全同胞关系,充分挖掘检材分型信息,更好地服务侦查破案,丰富了Y-STR的综合应用策略.

The electrical system of offshore wind farm is the key to deliver power to the onshore power grid. With the expansion of the scale of offshore wind farm, the traditional centralized offshore substation is facing the problems of large installation capacity and difficult construction. Therefore, a new technology-lightweight offshore substation, is introduced, and an improved k-medoids clustering method is proposed to establish the life cycle cost model of the new offshore wind farm collection system. In addition, considering the environmental impact, the collection system is optimized for different voltage levels, The Nash equilibrium theory of multiparty game evaluation is used to evaluate each scheme. Taking an offshore wind farm in a certain sea area as an example, the final results show that the integrated performance of the offshore wind farm collection system can be effectively improved by introducing the light substation and optimizing the voltage level.

Touch DNA is now often encountered in forensic investigation. Its successful acquisition is often crucial for solving the relevant cases. In this paper, 1025 pieces of touch DNA samples tested in our laboratory since 2012 are reviewed with the purpose to find some regularity. These samples were collected from various electric connectors consisting of mobile phones’ (156 pieces), net cables’ (416 pieces), power cables’ (155 pieces), displays’ (22 pieces), and USBs’ (276 pieces). The DNA was extracted with modified method of silica, amplified with AmpFLSTR? Identifiler? Plus PCR Kit, electrophoresed with ABI3500XL. Data were analyzed with GeneMapper ID-X. The results showed that the detection rate was 93.6% for mobile phones’ connectors, 84.4% for net cables’, 82.0% for power cables’, 95.5% for displays’, and 89.5% for USBs’, with a total detection rate of 87.0% for all the 1,025 pieces of touch DNA samples. The method applied here is suitable to tackle the samples of touch DNA.

目的 通过比较对改良硅珠法提取DNA的灵敏性和稳定性进行评价.方法 样本模板使用9947A(0.1 ng/μL),以30pg为等差,配置10～700pg共24种不同浓度的DNA模板,分别采用常规硅珠法与改良硅珠法提取并纯化模板DNA,在GeneAmp PCR System 9700上进行PCR扩增,ABI 3500XL型荧光分析仪进行电泳检测.结果 与9947A标准品阳性对照比较,采用常规硅珠法检验,24份样本均未获得成功分型;采用改良硅珠法检验,当模板量达到550pg时,即可得到所有基因座的成功分型;模板量达到580pg及以上时,16个基因座图谱峰值均可超过200RFU,分型稳定准确.结论 改良硅珠法提取DNA易于操作,稳定性较好,灵敏度优于常规硅珠法,可在法医微量物证DNA检验中应用.