基于铁路消防工程的维保作业管理系统软件研发及应用

铁路消防维保作业普遍存在流程冗长,资料繁杂,查阅不便,缺乏归类和数据分析的现象,为加强维保单位服务质量,提高工作效率,维保作业管理系统(简称MOMS)的研发及应用势在必行。该软件应具有维保项目管理,作业管理,备件管理,人事管理,权限控制,统计报表,数据分析等功能。在铁路系统消防工程中应用MOMS可有效加强管理力度,在不久的未来,它将更加具有灵活性和兼容性,能够实现多软件兼容或多平台跨越,完成相互协作,数据共享。     

原辅料对粮食酿造酒质量影响的研究进展

中国传统酿酒工艺中,酿酒的原料主要为粮食,辅料为酒曲。粮食和酒曲对于发酵过程和酿造酒产品质量有很大影响,粮食的品种多样,而作为微生物载体的酒曲的复杂程度更高,各种因素造就各种极具地方特色的粮食酿造酒。文章综述了各种粮食酿造酒使用的粮食和酒曲以及其对酿造酒产品品质的影响,旨在为优化酒的生产工艺、提升酒类产品质量和为企业节约生产成本提供参考。     

中欧标准在水泥胶砂强度测试中的对比研究

随着中国建筑企业海外业务开拓,中外标准在建筑材料质量、测试方法及性能评价方面的差异给中国建筑施工带来了巨大困扰。本文通过对比中欧标准水泥胶砂强度测试,分析其在仪器设备、实验步骤、结果处理等内容的异同点,为中国建筑企业在水泥性能检测及评价方面提供借鉴依据,规避海外业务风险,并对水泥标准建设的提出几点建议。     

Research on image segmentation of Miao costume patterns based on the RSKP-UNet model北大核心CSCD

The Miao nationality is the sixth largest ethnic group in China which has a history of thousands of years. It has created a unique material culture and spiritual culture in its development process and the Miao costume is a highly condensed collection of the material and spiritual culture of the Miao nationality. As one of the unique symbols of Miao culture the Miao costume has profound cultural heritage and cultural connotations. The patterns of the Miao costume are particularly eye-catching as they not only symbolize the wisdom of the Miao people in thousands of years of production and life but also symbolize the pursuit of the good spirit of the Miao people. However under the impact of modern pop culture and foreign culture these cultural symbols are gradually disappearing. In order to protect and inherit them the Miao costume pattern segmentation has become the most important work. However the Miao costume pattern segmentation is quite difficult. At present there are few studies on the extraction classification identification and preservation of the features of Miao costume pattern segmentation. With the excellent segmentation performance of the U-Net model and the advantages of easy deployment the paper improves the basic structure of the U-Net model and proposes a Miao costume pattern segmentation algorithm based on the RSKP-UNet Residual Selective-Kernel Parallel U-Net model. The algorithm adds Residual modules in the encoder part of the U-Net model to improve the feature extraction capability of the model and embeds the SKNet modules and ParNet modules in the decoder part to enhance the feature expression capability of the model. The paper uses evaluation metrics to measure the segmentation performance of the model and compares it with four segmentation models based on deep learning. The paper not only combines the current research focus-deep learning and attention mechanism but also introduces the Lovász-hinge loss function to effectively solve the problem of class imbalance in the Miao costume patterns. The RSKP-UNet model is better than other models in various segmentation indicators. Compared with the benchmark model U-Net the Dice coefficient IoU precision recall and accuracy are improved by 6. 98% 11. 07% 2. 89% 6. 75% and 3. 92% . The segmentation algorithm proposed in this paper realizes the extraction of the element content of the Miao costume patterns through image segmentation of Miao costume patterns which can be used to build the Miao costume pattern database in this way thus helping designers relevant researchers and organizations to provide research foundation and completing the protection and inheritance of the Miao costume culture. The paper also provides some reference for the segmentation research of other minority costume patterns. © 2022 Authors. All rights reserved.     

基于DriveWorks的城市轨道门扇参数化设计

文章在SolidWorks平台下应用DriveWorks完成大型零部件级别的驱动,实现了快速建模并且同时自动生成二维生产图纸,已成功运用于60余在产订单项目中。建立产品的知识库,将一些设计经验固化到软件中,完成门扇的自动化设计,提高设计图纸的质量,降低管理成本的同时,也提高了一套城市轨道门扇生产图纸的制作时间,能够有效地缓解项目周期紧张的状况。     

区域装配式建筑发展政策评价研究——基于熵权TOPSIS法

在对政策导向下的装配式建筑发展及其配套政策颁布现状分析的基础上,基于2013年~2017年国家和地方装配式建筑配套政策文本数据,构建包括土地规划政策、财政政策、税收政策、金融政策和行业支持政策在内的装配式建筑政策评价指标体系及评分细则。运用熵权TOPSIS法建立评价模型,评价区域政策力度以及政策工具演变情况,并提出推动我国装配式建筑发展的相关政策建议。     

含亚胺结构片段的喹唑啉酮衍生物的合成与抗肿瘤活性研究

设计并合成了一系列含亚胺结构片段的新型喹唑啉酮衍生物,最终的15个化合物结构经¹HNMR、¹³CNMR和HR-MS确证,并评价了它们对野生型表皮生长因子受体酪氨酸激酶(EGFR^wt)和两种人癌细胞株(A549、HepG2)的体外抗肿瘤活性。结果表明,部分化合物具有良好的活性,特别是化合物(E)-2-((4-((3,4-二氟亚苄基)氨基)苯氧基)甲基)-3-甲基喹唑啉-4(3 H)-酮对EGFR^wt激酶的IC₅₀达到0.037μmol/L,对A549和HepG2两种肿瘤细胞的IC₅₀值优于吉非替尼。     

预制装配式建筑结构设计研究

预制装配式建筑具有施工方便、工程进度快、对周围环境影响小的显著优势,随着近年来城市化进程的加快,其在住宅建筑中得到了广泛的应用.但考虑到预制装配式建筑需要经历较多的预处理环节,为保证施工质量,避免后续施工出现质量问题,充分做好预制装配式建筑结构的设计工作尤为关键.文章重点从技术策划、平面设计、结构节点设计、框架结构体系设计、预制构件设计、标准化类型设计、防水性设计七个方面分析综述预制装配式建筑结构设计要点与策略.     

氧化石墨烯复合膜处理含油废水的研究进展

氧化石墨烯（GO）膜在水处理方面有较好效果,但纯氧化石墨烯膜的稳定性、抗污性差,水通量 低,对于油水分离不能达到最优效果。引入功能材料通过物理和化学方法改性后,得到氧化石墨烯修饰复合膜 和氧化石墨烯基复合膜,其水通量、抗污性和油水分离效率都得到有效提高。文章简要介绍了国内外具有代表 性的氧化石墨烯复合膜在含油废水处理方面的研究,探讨了复合膜去除含油废水的机理,并总结和展望了氧化 石墨烯复合膜材料的发展前景。