Development of a Multi-Criteria Decision-Making Approach for Evaluating the Comprehensive Application of Herbaceous Peony at Low Latitudes

The growing region of herbaceous peony (Paeonia lactiflora) has been severely constrained due to the intensification of global warming and extreme weather events, especially at low latitudes. Assessing and selecting stress-tolerant and high-quality peony germplasm is essential for maintaining the normal growth and application of peonies under adverse conditions. This study proposed a modified multi-criteria decision-making (MCDM) model for assessing peonies adapted to low-latitude climates based on our previous study. This model is low-cost, timesaving and suitable for screening the adapted peony germplasm under hot and humid climates. The evaluation was conducted through the analytic hierarchy process (AHP), three major criteria, including adaptability-related, ornamental feature-related and growth habits-related criteria, and eighteen sub-criteria were proposed and constructed in this study. The model was validated on fifteen herbaceous peonies cultivars from different latitudes. The results showed that ‘Meiju’, ‘Hang Baishao’, ‘Hongpan Tuojin’ and ‘Bo Baishao’ were assessed as Level I, which have strong growth adaptability and high ornamental values, and were recommended for promotion and application at low latitudes. The reliability and stability of the MCDM model were further confirmed by measuring the chlorophyll fluorescence of the selected adaptive cultivars ‘Meiju’ and ‘Hang Baishao’ and one maladaptive cultivar ‘Zhuguang’. This study could provide a reference for the introduction, breeding and application of perennials under everchanging unfavorable climatic conditions.     

人工神经网络方法辨识岩体力学参数的可辨识性及其稳定性探讨

探讨了以巷道围岩变形观测为依据 ,用神经网络反推岩体物理力学性质和初始地应力环境参数时各参数的可辨识性 ,以及参数辨识的稳定性。找出了待辨识参数个数与所需最少巷道变形观测项目数之间的关系 ,并给出了巷道围岩变形观测项目选择的建议     

基于 Lamb 波能量和飞行时间的碳纤维复合材料 疲劳损伤成像

碳纤维复合材料被广泛应用于航空航天等高新技术领域,其在服役过程中会产生疲劳损伤,埋下安全隐患,因此需要对其健康状况进行监测,利用损伤概率成像算法能够得到直观反映结构健康状况的图像,但传统的损伤概率成像算法在无损伤区域的损伤概率高,难以准确定位损伤,针对以上问题,提出基于Lamb波能量和飞行时间的损伤概率成像算法。将待测区域均匀划分成N个像素点,计算每条通道的Lamb波能量与飞行时间损伤因子,确定各通道损伤因子影响区域的概率值并叠加,得到每个像素点的损伤概率并成像。实验结果表明,与目前常用的基于能量损伤因子和互相关损伤因子的损伤概率成像算法进行对比,提出的方法能够直观地反映碳纤维复合材料缺陷情况,并且识别效果更优,成像误差显著减小,误差error分别降低了4.420、2.117、2.055和4.732、2.380、2.647,能够更准确地识别缺陷,有效地保障碳纤维复合材料结构的安全应用。     

一种结合阴影补偿的城市高分遥感影像分割方法

随着遥感影像空间分辨率的不断提高,由于阴影导致的弱边缘及虚假边缘等对于准确定位对象边缘所造成的干扰也更加突出。在传统的影像分割中进一步引入阴影补偿策略,在之前所提出的WJSEG算法基础上,通过将阴影视为出界点并利用卡方变换进行阴影识别,提出了一种结合阴影补偿的城市场景高分辨率遥感影像分割算法SWJSEG。实验表明,该方法能够有效应对阴影造成的干扰,有助于更加准确地定位对象边缘,使影像分割的精度及可靠性显著提高。     

HPC—11型混凝土喷射车的研制

混凝土喷射支护由于具有快速、及时、方便、低成本的优点,在地下矿山和隧道工程中得到了广泛应用。ＨＰＣ－１１型混凝土喷射车是集机电液为一体的新型混凝土喷射设备,该设备采用多种先进技术,具有自动变速行驶、湿式喷射、有线遥控操纵等特点。实际应用表明：该机具有喷射能力大、工作效率高、操作简单方便、粉尘小、回弹率低等优点,受到施工人员的欢迎。     

Comprehensive Transcriptome Analysis of Hair Follicle Morphogenesis Reveals That lncRNA-H19 Promotes Dermal Papilla Cell Proliferation through the Chi-miR-214-3p/β-Catenin Axis in Cashmere Goats

Cashmere is initiated and develops in the fetal stages and the number and density of secondary hair follicles (SHFs) determine cashmere production and quality. Growing evidence indicates that both microRNA (miRNA) and long non-coding RNA (lncRNA) play an indispensable role in hair follicle (HF) growth and development. However, little is known about miRNAs, lncRNAs, and their functions as well as their interactions during cashmere initiation and development. Here, based on lncRNA and miRNA high-throughput sequencing and bioinformatics analysis, we identified 10,485 lncRNAs, 40,639 mRNAs, and 605 miRNAs in cashmere goat skin during HF induction, organogenesis, and cytodifferentiation stages. Among them, 521 lncRNAs, 5976 genes, and 204 miRNAs were differentially expressed (DE). KEGG analysis of DE genes indicated that ECM–receptor interaction and biosynthesis of amino acids were crucial for HF development. Notch, TGF-beta, and Wnt signaling pathways were also identified, which are conventional pathways associated with HF growth and development. Then, the ceRNA regulatory network was constructed, and the impact of lncRNA H19 was investigated in dermal papilla (DP) cells. The MTT, CCK-8, and EdU assays showed that the viability and proliferation of DP cells were promoted by H19, and mechanistic studies suggested that H19 performed its function through the chi-miR-214-3p/β-catenin axis. The present study created a resource for lncRNA, miRNA, and mRNA studies in cashmere morphogenesis. It could contribute to a better understanding of the molecular mechanism of ncRNAs involved in the regulation of HF growth and development.     

为建筑工人设计的房子

作品紧扣设计大赛主题,将改善建筑工人的居住生活条件作为目标,通过社会调查和深入研究,设计出了拆装方便、实用美观的建筑集合体。该集合体主要由居住空间和公共服务空间两部分组成,基本组成单元可通过内部构件的灵活布置转换成学习空间和娱乐空间;采用钢架结构,预制构件的规格较为统一,便于施工并且可重复使用。     

小半径曲线运营隧道旁深基坑开挖的变形控制

当今城市建设的发展已向立体三维展开,地下工程纵横交叉,新建地铁工程深基坑的开挖面临上下左右已建建筑基础、地下管线、高架桥和多条地铁等设施的保护要求。结合上海轨道交通在运营地铁1号线小半径曲线运营区间隧道旁的深基坑开挖实践,介绍了上海地区控制深基坑变形,保护周边设施的方法和技术。     

LED数码字幕灯柱的研制

LED数码字幕灯柱用于道路两侧的亮化,它利用LED光源的优点,又与实际相结合,集亮化、广告、安全为一体,值得在城市亮化工程中推广。文章对LED数码灯管的原理、LED数码字幕灯柱的结构、安装电路及功能进行了介绍说明。     

现代气压沉箱施工的环境监测及分析

现代气压沉箱施工多应用于大城市繁华地段,为把其对周边环境的影响降到最小,试点工程对气压沉箱施工进行了环境监测方案,并对监测结果进行了分析。监测结果表明:现代气压沉箱施工对周边环境的影响较小,周边土体、邻近建筑物以及地管线的变位能够控制在允许范围之内。