检索结果-南通市图书馆

Inference for Optimal Split Point in Conditional Quantiles

在线全文

学校读者我要写书评

暂无评论

Frontiers of Economics in China-Selected Publications from Chinese Universities 2016年第1期11卷 40-59页

作者： yanqin fan Ruixuan Liu Dongming Zhu Department of Economics University of Washington Seattle WA 98195 USA Department of Economics Emory University Atlanta GA 30322 USA School of Economics & Key Laboratory of Mathematical Economics Shanghai University ofFinance and Economics Shanghai 200433 China

In this paper we show the occurrence of cubic-root asymptotics in misspecified conditional quantile models where the approximating functions are restricted to be binary decision trees. Inference procedure for the optimal split point in the decision tree is conducted by inverting a t-test or a deviation measure test, both involving Chemoff type limiting distributions. In order to avoid estimating the nuisance parameters in the complicated limiting distribution, subsampling is proved to deliver the correct confidence interval/set.

关键词： cubic-root asymptotics Chemof distribution misspecified Quantileregression optimal split point

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

甜椒新品种‘冀研119’的选育

辣椒杂志 2024年第2期22卷 53-57页

作者：孟雅宁范妍芹张红肖张哲李欣欣严立斌河北省农林科学院经济作物研究所石家庄050051 河北省蔬菜技术创新中心石家庄050051

‘冀研119’是以甜椒雄性不育两用系AB91-WL11-4322为母本,以自交系MY12-2-6-2-3-2为父本选配成的甜椒杂种一代。中早熟,始花节位在9~11节,植株生长势强,连续坐果能力强,果实灯笼形,3~4心室,果面光滑有光泽,商品成熟果为绿色,生理成熟... 详细信息

‘冀研119’是以甜椒雄性不育两用系AB91-WL11-4322为母本,以自交系MY12-2-6-2-3-2为父本选配成的甜椒杂种一代。中早熟,始花节位在9~11节,植株生长势强,连续坐果能力强,果实灯笼形,3~4心室,果面光滑有光泽,商品成熟果为绿色,生理成熟时转黄色,果实纵径10.5 cm左右,果实横径8.9 cm,平均单果鲜质量245 g,果实商品性好,感官品质优良,味甜质脆,可溶性糖含量为32.26 mg/g(FW)、Vc含量108.3 mg/100 g(FW);抗病性强,室内及田间抗病性鉴定结果表明,冀研119耐疫病、抗病毒病、中抗炭疽病。每667 m^(2)平均鲜椒产量4 000 kg,适合在河北石家庄、邯郸、张家口、承德等地采用塑料大棚春提前种植,或在石家庄采用日光温室秋延后种植,在邯郸采用塑料大棚秋延后种植。

关键词：甜椒 ‘冀研119’ 杂交一代

Identification of Nucleus Sterility Candidate Genes Using a Resequencing Technique in Sweet Pepper Sterile Line AB91

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences 2021年第2期12卷 138-157页

作者： Yaning Meng Libin Yan Hongxiao Zhang yanqin fan The Institute of Cash Crops Hebei Academy of Agriculture and Forestry Sciences Shijiazhuang China

Breeding hybrids with nuclear malesterile lines is an important method for the cross-breeding of sweet peppers. To date, few reports have been published on the nuclear malesterility gene of sweet pepper. Yet, there are approximately 20 pepper nuclear malesterility lines in the world. Using the self-developed testing material, sweet pepper nuclear malesterile dual-purpose line AB91, the genome-wide resequencing technique was applied to find that the mutation site causing the abortion of sweet pepper nuclear malesterility AB91 is on chromosome #5. The mutation gene Capana05g000747 was filtered out and validated by the flight mass spectrometry genotyping and quantitative realtime PCR method and determined to be the gene causing the abortion of sweet pepper nuclear male sterility AB91. The gene Capana05g000747 mutation site is a non-synonymous mutation site located at the 6th exon, the base C mutated into A, and the amino acid changed from alanine to serine. The three-dimensional protein structure of fertile and sterile plant Capana05g000747 was predicted. The results showed that the three-dimensional structure of the two proteins differed significantly. Sequence alignment analysis showed that the gene Capana05g000747 has a similar function to gene At2g02148. The gene At2g02148 contains a pentatricopeptide repeat protein which has important physiological functions in the gene expression process of organelles and is closely related to the performance of malesterility genes. Therefore, Capana05g000747 was selected as an important candidate gene for sweet pepper nuclear male sterile testing material AB91.

关键词： Sweetpepper Nuclear Malesterile Line Genome-Wide Resequencing Technique Candidate Gene

Indoor Inoculation and Identification Technology of Sweet (Hot) Pepper Virus

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plant Diseases and Pests 2013年第3期4卷 4-8页

作者： Yan Libin fan yanqin Sun Yingtao Lou Xiaoli Institute of Cash Crops Hebei Academy of Agriculture and Forestry Sciences Agricultural Comprehensive Development Office of Zhengding

[Objective] The paper was to establish an affordable indoor virus inoculation and identification technology. [Method] Taking Tobacco Mosaic Virus （TMV） and Cucumber Mosaic Vires （CMV） of sweet （hot） pepper as the sources of virus, an affordable indoor virus inoculation and identification technology was developed in the paper. [ Result] The suitable inoculation concentration of CMV was five to ten times, and the best seedling age for inoculation was five to six leav- es. Suitable inoculation concentration of TMV was 20 to 30 times, and the best seedling age for inoculation was three to six leaves. Single inoculation technology was mainly used for indoor virus inoculation and identification of sweet （hot） pepper, and complex inoculation technology could also be adopted with first, st inoculation of CMV and late inoculation of TMV. For mixed inoculation technology, CMV： TMV should be 1： 1. Complex inoculation and mix inoculation should base on the tech- nology of single inoculation. Disease resistant materials, AID1-W22-dg176, ABgl-W22-48123, AB91-DL-6428, HY031-2-8-1-6, BYT-4-1-3-6-8, JFG-2-1-2-6, JF8S-1-1-5-4-8 and I＇502-1-1-3-5, were identified by this method. [ Conclusion] This research provided scientific basis for standardization of indoor inoculation of sweet （hot） pepper virus.

关键词： Sweet (hot) pepper CMV TMV Virus Indoor inoculation

基于Daubechies小波尺度函数的炉膛空气动力场声学层析重建方法

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国电机工程学报 2024年第5期44卷 1904-1912,I0020页

作者：刘璠李言钦郑州大学机械与动力工程学院河南省郑州市450001

声学层析测量是一种先进、有前景的炉内空气动力场非接触重建方法,其中可靠、优化的重建模型算法是关键。小波尺度函数包含所确定尺度以下所有信号频率信息,便于有效重构包含复杂频率成分的场对象,鉴于此,该文提出以小波尺度函数为基对... 详细信息

声学层析测量是一种先进、有前景的炉内空气动力场非接触重建方法,其中可靠、优化的重建模型算法是关键。小波尺度函数包含所确定尺度以下所有信号频率信息,便于有效重构包含复杂频率成分的场对象,鉴于此,该文提出以小波尺度函数为基对待测空间场层析重建的方法。其采用具有紧支撑、正交特点的Daubechies小波以获得更好的场重建辨识度;对几何参数进行归一化处理以适应不同炉膛断面尺寸的场重建;采用梯度下降法求解线性方程组,得到稳定可靠的结果。通过构建不同典型仿真断面流场并重建,该方法均得到与原设定场良好的一致性,从而证明所提出场重建方法的有效性与可靠性。

关键词：声学层析测量流场 Daubechies小波尺度函数梯度下降法

维普期刊数据库博看期刊

在线全文

学校读者我要写书评

暂无评论

祖母绿——女性解放的完美句号

江西科技师范学院学报 2007年第1期2卷 103-105页

作者：樊燕琴福建商业高等专科学校福建福州350012

在中国文学史上,有许许多多的女性在追求着个性解放道路,可是,她们的所谓解放道路大多离不开个人的情感,所以,总是失败。然而,我们从张洁的《祖母绿》中女主人翁曾令儿身上看到了女性的力量,女性的价值体现及女性的不断走向成熟,她们实... 详细信息

在中国文学史上,有许许多多的女性在追求着个性解放道路,可是,她们的所谓解放道路大多离不开个人的情感,所以,总是失败。然而,我们从张洁的《祖母绿》中女主人翁曾令儿身上看到了女性的力量,女性的价值体现及女性的不断走向成熟,她们实现了社会性的解放,完成了从个性解放到社会解放的成长道路。

关键词：女性解放道路

探讨个性化护理联合中医特色护理对上肢骨折患者的护理效果

在线全文

学校读者我要写书评

暂无评论

中医临床研究 2019年第4期11卷 132-133页

作者：范艳琴深圳市罗湖区人民医院广东深圳518001

目的:分析个性化护理联合中医特色护理在上肢骨折患者中的护理效果。方法:选取2016年12月-2017年12月在本院接受治疗的上肢骨折患者96例,随机数字表法将其分成两组,对照组(48例)行个性化护理,试验组(48例)在对照组基础上行中医特色护理... 详细信息

目的:分析个性化护理联合中医特色护理在上肢骨折患者中的护理效果。方法:选取2016年12月-2017年12月在本院接受治疗的上肢骨折患者96例,随机数字表法将其分成两组,对照组(48例)行个性化护理,试验组(48例)在对照组基础上行中医特色护理;观察患者临床护理效果、骨折部位肿胀、疼痛指数及骨折关节活动状况。结果:试验组患者护理总的有效率为95.83%,对照组为83.33%,差异有统计学意义(P <0.05);试验组患者护理后其骨折肿胀、疼痛评分显著低于护理前、对照组,关节活动评分显著高于护理前、对照组,差异均有统计学意义(P <0.05)。结论:个性化结合中医特色护理对上肢骨折患者疗效显著,明显改善患者骨折疼痛及肿胀状况,提高骨折部位关节活动度。

关键词：骨折个性化护理中医特色护理关节活动度