云南省个体、私营企业多层次抽样调查方案设计

为适应云南省经济体制的发现,提高应用抽样调查技术的水平,在考虑云南省个体或私营企业有关调查数据特点的基础上,设计了具有针对性的自然分层相接合的分层二阶抽样方案,以满足省和地区两组政府的需求。     

模糊化拟阵的最新进展

本文拟对模糊化拟阵理论做一个简短的介绍和评述,试图使读者了解模糊化拟阵理论的最新研究成果.     

Ontogenic development of the renal ornithine decarboxylase response to testosterone

Summary In neonatal mice, renal ornithine decarboxylase was not altered by testosterone injection, in contrast to adult mice in which the enzyme was greatly elevated following treatment with testosterone.     

一类矩阵方程的正交对称问题

针对约束矩阵方程问题,提出了一类矩阵方程的正交对称约束问题.通过研究正交对称矩阵与对称矩阵的关系,应用矩阵的标准相关分解(CCD)原理,获得了矩阵方程正交对称约束问题存在解的充要条件,以及该问题的通解表达式,并导出了与已知矩阵最佳逼近的正交对称解,也获得了方程相应的最小范数解.     

改进的线性判别回归分类人脸识别算法

对线性回归分类算法进行了改进。考虑了线性回归分类算法中没有考虑的类间信息,通过选择类模式的投影方向判别不同类的模式,不同类的模式互相远离,相同类的模式尽可能靠近来估计投影矩阵;再利用投影矩阵将训练图像及测试图像投影到各类的特征子空间;最后,计算出测试图像与训练图像间的距离,利用K-近邻分类器完成人脸的识别。在FERET人脸数据库上进行实验验证。实验结果表明,相比其他回归分类算法,本算法取得了更好的识别效果。     

Germline BAP1 mutations predispose to malignant mesothelioma

Because only a small fraction of asbestos-exposed individuals develop malignant mesothelioma, and because mesothelioma clustering is observed in some families, we searched for genetic predisposing factors. We discovered germline mutations in the gene encoding BRCA1 associated protein-1 (BAP1) in two families with a high incidence of mesothelioma, and we observed somatic alterations affecting BAP1 in familial mesotheliomas, indicating biallelic inactivation. In addition to mesothelioma, some BAP1 mutation carriers developed uveal melanoma. We also found germline BAP1 mutations in 2 of 26 sporadic mesotheliomas; both individuals with mutant BAP1 were previously diagnosed with uveal melanoma. We also observed somatic truncating BAP1 mutations and aberrant BAP1 expression in sporadic mesotheliomas without germline mutations. These results identify a BAP1-related cancer syndrome that is characterized by mesothelioma and uveal melanoma. We hypothesize that other cancers may also be involved and that mesothelioma predominates upon asbestos exposure. These findings will help to identify individuals at high risk of mesothelioma who could be targeted for early intervention.     

压电发电充电器的设计

为了收集环境振动机械能,设计一种是压电发电充电器,该系统主要由压电陶瓷发电设备、电能采集电路、升压电路、电池充电电路和电池电量测试部分等构成,实现了对微弱电量的收集、锂电池和镉镍电池的充电和电池电量多通道的检测,具有很好的应用前景。     

胺法烟气脱硫最新进展

胺法烟气脱硫技术是一种再生型分离技术.该技术主要的优势是:脱硫副产物综合利用价值高,并且不产生二次污染.对胺法烟气脱硫技术进行了评述,并对其发展趋势进行展望.     

丸尺蛾属(尺蛾科,灰尺蛾亚科)一中国新纪录种

记述采自四川乐山市的丸尺蛾属一中国新纪录种——Plutodes unidentata Holloway,1976.对其外部形态和生殖器进行了简要描述,给出其特征图.研究标本保存于西华师范大学昆虫标本馆.