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AN SVAD ALGORITHM BASED ON FNNKD METHOD

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Journal of Electronics(China) 2002年第3期19卷 280-288页

作者： ChenDong zhangyan 等 Dept.ofElectronicengineering BeijingInstituteofTechnologyBeijing100081 SchoolofVehicleandTransportationEng. BeijingInstituteofTechnologyBeijing100081

The capacity of mobile communication system is improved by using Voice Activity Detection (VAD) technology. In this letter, a novel VAD algorithm, SVAD algorithm based on Fuzzy Neural Network Knowledge Discovery (FNNKD) method is proposed. The performance of SVAD algorithm is discussed and compared with traditional algorithm recommended by ITU G.729B in different situations. The simulation results show that the SVAD algorithm performs better.

关键词： FNNKD VAD Adaptive Multi-Rate (AMR) Heuristic Gradient Learning Algorithm (HGLA)

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起重机起升机构减速箱齿轮故障诊断

港口装卸 2000年第3期 10-12页

作者：王功勇赵章焰武汉理工大学武汉430063

减速箱是起重机械中使用极为广泛的零部件之一。它的工作状态的好坏直接影响到起重机械的使用效能。从齿轮啮合动力学模型入手 ,论述了齿轮故障诊断原理。

关键词：起重机起升机构减速箱故障诊断齿轮

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遗传算法种群多样性的度量

华中理工大学学报 1999年第7期27卷 3-5页

作者：李凡徐章艳华中理工大学计算机科学与技术学院

针对遗传算法的过早收敛问题，从种群个体、基因两个方面给出了遗传算法种群多样性的度量方法，并在此基础上提出了一种基于大变异操作的遗传算法．实验结果表明该方法在问题求解的精确度以及收敛性方面取得了很好的效果．

关键词：遗传算法种群多样性度量问题过早收敛

Molecular detection of the powdery mildew resistance genes in winter wheats DH51302 and Shimai 26

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Journal of Integrative Agriculture 2020年第4期19卷 931-940页

作者： QU Yun-feng WU Pei-pei HU Jing-huang CHEN Yong-xing SHI Zhan-liang QIU Dan LI Ya-hui ZHANG Hong-jun ZHOU Yang YANG Li LIU Hong-wei ZHU Tong-quan LIU Zhi-yong zhangyan-ming LI Hong-jie Key Laboratory of Molecular Cytogenetic and Genetic Breeding of Heilongjiang Province/College of Life Science and Technology Harbin Normal UniversityHarbin 150025P.R.China National Engineering Laboratory for Crop Molecular Breeding/Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081P.R.China Institute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing 100101P.R.China Shijiazhuang Academy of Agricultural and Forestry Sciences Shijiazhuang 050041P.R.China Wheat Research Institute Zhumadian Academy of Agricultural SciencesZhumadian 463000P.R.China

Resistance to powdery mildew is an important trait of interest in many wheat breeding programs. The information on genes conferring resistance to powdery mildew in wheat cultivars is useful in parental selection. Winter wheat breeding line DH51302 derived from Liangxing 99 and cultivar Shimai 26 derived from Jimai 22 showed identical infection patterns against 13 isolates of Blumeria graminis f. sp. tritici(Bgt) that causes wheat powdery mildew. DH51302 and Shimai 26 were crossed to a powdery mildew susceptible cultivar Zhongzuo 9504 and the F2:3 families were used in molecular localization of the resistance genes. Fourteen polymorphic markers, which were linked to Pm52 from Liangxing 99, were used to establish the genetic linkage maps for the resistance genes Pm DH51302 and Pm SM26 in DH51302 and Shimai 26, respectively. These genes were placed in the same genetic interval where Pm52 resides. Analysis of gene-linked molecular markers indicated that Pm DH51302 and Pm SM26 differed from other powdery mildew resistance genes on chromosome arm 2 BL, such as Pm6, Pm33, Pm51, Ml Zec1, Ml AB10, and Pm64. Based on the results of reaction patterns to different Bgt isolates and molecular marker localization, together with the pedigree information, DH51302 and Shimai 26 carried the same gene, Pm52, which confers their resistance to powdery mildew.

关键词： Triticum aestivum Blumeria graminis f.sp.tritici Pm52 molecular mapping

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干式超声清洗头空腔结构声模态特性数值模拟

哈尔滨工业大学学报 2023年第12期55卷 141-150页

作者：赵章焰王煜李维东王国贤武汉理工大学交通与物流工程学院武汉430063 跨流域空气动力学重点实验室(中国空气动力研究与发展中心) 四川绵阳621000 中国空气动力研究与发展中心超高速空气动力研究所四川绵阳621000

为研究干式超声波清洗头空腔结构的流场和声场特性,根据干式超声清洗头的超声波发声机理设计了通过流体间流体力学相互作用发声的3 mm腔体(小腔体)结构和通过流体与声学模态共振相互作用发声的10 mm腔体(大腔体)结构,采用计算流体力学(c... 详细信息

为研究干式超声波清洗头空腔结构的流场和声场特性,根据干式超声清洗头的超声波发声机理设计了通过流体间流体力学相互作用发声的3 mm腔体(小腔体)结构和通过流体与声学模态共振相互作用发声的10 mm腔体(大腔体)结构,采用计算流体力学(computational fluid dynamics, CFD)方法对所设计的方腔展开数值研究。结果表明:两结构有着相似的流场特性,相同压力条件下小腔体的流激振荡更激烈;腔体内最大流速随压力的增大而增大,最大流速的增长率随压力增大而减小,不同的腔体在相同压力条件下最大速度、最大速度的增长率相近;两种结构均能产生超声波,其超声波发声机理与腔体尺寸相关,发声机理与预测值相符。研究表明,针对干式超声波清洗头的流道结构设计并不局限于流体间流体力学相互作用发声的小腔体,大腔体同样可以产生强烈高频超声波,这为干式超声波清洗头的结构设计提供参考。

关键词：干式超声清洗 CFD 流激振荡超声波空腔结构

High expression of CREPT promotes tumor growth and is correlated with poor prognosis in colorectal cancer

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High expression of CREPT promotes tumor growth and is correl...

The role of oral glucose tolerance test in screening for diabetes mellitus in the elderly of Harbin, China

第十一届全国免疫学学术大会

作者： Zheng guoxu Zuo baile Guo zhangyan Xi wenjin Wen weihong Yang angang State key laboratory of Cancer Biology Department of ImmunologyFourth Military Medical University

Background: CREPT(cell cycle-related and expression elevated protein in tumor) is highly expressed in many kinds of cancer, and has been shown to be prognostic in certain cancers. However, the clinical significance of CREPT in colorectal cancer(CRC) has not been sufficiently investigated. Methods: In this study, we examined the CREPT expression by IHC in a tissue array composed of 225 clinical CRC tissues and adjacent normal tissues, and analyzed the correlation between CREPT expression and other clinicopathological features. We also evaluated the biological function of CREPT both in vitro and in vivo using knockdown or overexpressing CRC cells. Results: Our results showed that CREPT expressed in 175 of 225(77.8%) CRC patients and the CREPT expression was significantly associated with tumor differentiation(P=0.000), Dukes’ stages(P=0.013) and metastasis(P=0.038). Patients with high CREPT expression tended to have shorter survival time. Multivariate analysis showed that positive CREPT expression can be used as an independent predictor for CRC prognosis. CREPT knockdown cells showed inhibited cell proliferation and arrested cell cycle, while CREPT overexpressing cells showed increased proliferation and promoted cell cycle. In addition, CREPT overexpression significantly promoted tumor growth in vivo. Mechanism study showed that CREPT may regulate cell proliferation and cell cycle through the regulation on cyclin D3, CDK4 and ***: CREPT was highly expressed in CRC tissues, and the elevated CREPT expression is significantly correlated with the aggressive phenotype and poor prognosis of CRC. CREPT might regulate cell proliferation and cell cycle arrest through the regulation on the expression of cyclin D3, CDK4 and CDK6. Thus, we hypothesize that CREPT could be a promising target and potential prognostic indicator in CRC.

关键词： CREPT cell proliferation cell cycle colorectal cancer prognosis

来源： cnki会议评论

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Chinese Medical Journal 2005年第5期118卷 418-420页

作者： zhangyan-qiao ZHANGYi-na CUICan FANYing CHANGMan-li YUWei-gang LIUFeng-chen TANNing ZHANGJin-chao DepartmentofGeriatricsSecondAffiliatedHospitalofHarbinMedicalUniversity Harbin150086China ClinicalLaboratoryCenterSecondAffiliatedHospitalofHarbinMedicalUniversity Harbin150086China DepartmentofEndocrinologySecondAffiliatedHospitalofHarbinMedicalUniversity Harbin150086China

Though diabetes is common worldwide, the proportion of cases diagnosed is not high. Nearly fifty percent of patients with diabetes mellitus (DM) in US are undiagnosed.~1 The ratio might be higher in China. It has been suggested that diabetes may be present 4 to 7 years before diagnosis.~2 (Many of) the complications appear to be present at the time of diagnosis of the diabetic status.~1 (Screening for) diabetes in early stage of diabetes is thus a worthwhile exercise.

关键词： oral glucose tolerance test diabetes mellitus diagnosis optimal fasting plasma glucose cut-point

艺术与现实的融合统一——读狄兰·托马斯的诗《拒绝哀悼在伦敦大火中被烧死的孩子》

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外国语言文学 2008年第1期25卷 60-65页

作者：章燕北京师范大学外文学院北京100001

英国诗人狄兰·托马斯是英国二十世纪40年代新浪漫主义诗歌的代表。然而,在第二次世界大战时期,他创作出具有浓厚现实意义的优秀诗歌作品《拒绝哀悼在伦敦大火中被烧死的孩子》,表明他的诗歌主题朝向现实的某种转向。但诗人始终追求诗... 详细信息

英国诗人狄兰·托马斯是英国二十世纪40年代新浪漫主义诗歌的代表。然而,在第二次世界大战时期,他创作出具有浓厚现实意义的优秀诗歌作品《拒绝哀悼在伦敦大火中被烧死的孩子》,表明他的诗歌主题朝向现实的某种转向。但诗人始终追求诗歌艺术的独立品质。该作品便集中表现了其艺术与现实的融合统一,特别是他的"拒绝哀悼"这一话语背后所体现出的对正统的诗歌形式的背离,更加表明他在诗歌话语形式方面的创新,使得他能够以"拒绝"的姿态实现诗歌的意识形态表达。

关键词：艺术现实意象拒绝哀悼

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高泛化能力的变精度粗糙集的决策树算法

华中科技大学学报（自然科学版） 2008年第8期36卷 74-77页

作者：高鹏王道平徐章艳李凡北京科技大学经济管理学院北京100083 广西师范大学计算机系广西桂林541004 华中科技大学计算机科学与技术学院湖北武汉430074

现有基于变精度粗糙集模型的决策树生成算法具有如下不足:有些叶子结点上覆盖的实例数太少,导致这些叶子结点的泛化能力太小而没有意义;不能很好地处理不一致的实例集.为解决上述问题,引入属性是否具有决策类这一概念,较好地避免了决策... 详细信息

现有基于变精度粗糙集模型的决策树生成算法具有如下不足:有些叶子结点上覆盖的实例数太少,导致这些叶子结点的泛化能力太小而没有意义;不能很好地处理不一致的实例集.为解决上述问题,引入属性是否具有决策类这一概念,较好地避免了决策树的过剩生长,使得生成的决策树有较好的泛化能力.给出新的终止条件,即时地终止不一致实例集的生长.在此基础上,给出新的终止条,提出了一种新的基于变精度粗糙集的决策树生成算法.用一实例说明了新算法的效率得到提高.

关键词：决策树算法变精度粗糙集信息增益不一致实例集