Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering最新文献_第6页

Modeling of cross line operation of urban rail transit trains based on passenger travel time 基于乘客出行时间的城市轨道交通列车跨线运行建模

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-09-01 DOI: 10.3724/sp.j.1249.2022.05600

Q. Luo, B. Lin, Mengqi Gu, Liang Yang, Xiaochun Zhang

{"title":"Modeling of cross line operation of urban rail transit trains based on passenger travel time","authors":"Q. Luo, B. Lin, Mengqi Gu, Liang Yang, Xiaochun Zhang","doi":"10.3724/sp.j.1249.2022.05600","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.05600","url":null,"abstract":"LUO Qin, LIN Bin, GU Mengqi, YANG Liang, and ZHANG Xiaochun 1) College of Urban Transportation and Logistics, Shenzhen Technology University, Guangdong Rail Transit Intelligent Operation and Maintenance Technology Development Center, Shenzhen 518118, Guangdong Province, P. R. China 2) Shenzhen Urban Transport Planning Center Co. Ltd., Shenzhen 518057, Guangdong Province, P. R. China Abstract: Cross line operation mode of urban rail transit can not only meet diversified travel needs of passengers and improve efficiency of passenger travel, but also shorten the time and space distance between suburban and urban core areas. In this paper, the travel time cost of different types of passengers is analyzed on the basis of considering the train selection probability for passengers to choose cross train or transfer. An optimization model of cross line operation organization is established with the objective function of minimizing the total travel time cost of passengers. The model is solved by genetic algorithm. The scheme of metro Line I of city S crossing into Line II is used as an example to verify the feasibility of the model, and the optimal train density under different train load rates is obtained. This study can provide a reference for the cross line operation organization of urban rail transit.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41534620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of TiO₂ doping modification on structure and catalytic performance of UiO-66 TiO2掺杂改性对UiO-66结构及催化性能的影响

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-09-01 DOI: 10.3724/sp.j.1249.2022.05497

Yun Ma

引用次数: 0

Adaptive channel decoding method for polar codes 极化码的自适应信道解码方法

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-09-01 DOI: 10.3724/sp.j.1249.2022.05521

Maolin Ye, Xiaoqing Tan, Liqing Xu, Shanxiang Lü

{"title":"Adaptive channel decoding method for polar codes","authors":"Maolin Ye, Xiaoqing Tan, Liqing Xu, Shanxiang Lü","doi":"10.3724/sp.j.1249.2022.05521","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.05521","url":null,"abstract":"Abstract: The polar code is a channel coding technology which can reach the Shannon limit in theory and has the advantage of low coding and decoding complexity. It is now one of the channel coding solutions in 5G communication. The successive cancellation list (SCL) decoding algorithm is the most commonly used decoding method for polar codes, but it has high memory and time complexity. Fast succesive cancellation (Fast-SC) decoding algorithm can effectively reduce the decoding complexity, but it has the problem of low reliability. In order to take into account the decoding efficiency and reliability of polar codes, a preFast-SCL decoding algorithm for adaptive channels is proposed. The algorithm combines the advantages of Fast-SC and SCL decoding algorithms. At the beginning of decoding, the Fast-SC algorithm is used to quickly obtain a group of decoding results and verify them. If the verification is passed, it will be outputed as the result, but if not, SCL decoding will be used to ensure the reliability. Simulation results show that the complexity of preFast-SCL decoding algorithm decreases gradually with the improvement of channel conditions. In additive white Gaussian noise channel, the reliability of preFast-SCL is basically the same as that of SCL decoding algorithm. When the signal to noise ratio (SNR) is 2. 0 dB, the decoding complexity of preFast-SCL is reduced by 45% compared with SCL, and the time performance gain is better under the condition of higher SNR.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44429589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation optimization method for site selection of urban emergency medical material distribution center 城市应急医疗物资配送中心选址的评价优化方法

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-09-01 DOI: 10.3724/sp.j.1249.2022.05584

Dan Zhou, Ruixin Yang, Guobin Gu, Chujie Zhong, Yongcheng Shi, Wenyong Li

引用次数: 1

Numerical simulation of multi-cluster proppant distribution in horizontal wells 水平井中多簇支撑剂分布的数值模拟

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-09-01 DOI: 10.3724/sp.j.1249.2022.05576

Anhai Zhong, Tian-tian Guo

引用次数: 0

First-principles study on Hf doped LaMnO₃ Hf掺杂LaMnO3的第一性原理研究

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-09-01 DOI: 10.3724/sp.j.1249.2022.05489

Shuyuan Lü, Jianwei Li, Hao Jin, Yadong Wei, Jian Wang

引用次数: 0

Screening out serum protein biomarkers from both groups of asthma and ABPA patients 哮喘和ABPA患者血清蛋白生物标志物的筛选

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-09-01 DOI: 10.3724/sp.j.1249.2022.05538

Lei Yang, Yun Wang, M. Jin, Diquan Shuai, H. Cai, L. Ye, Shuiming Li, B. Shen

{"title":"Screening out serum protein biomarkers from both groups of asthma and ABPA patients","authors":"Lei Yang, Yun Wang, M. Jin, Diquan Shuai, H. Cai, L. Ye, Shuiming Li, B. Shen","doi":"10.3724/sp.j.1249.2022.05538","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.05538","url":null,"abstract":"似,极易造成因漏诊、误诊而延误治疗.为提高这两种疾病诊断的准确性,运用蛋白芯片技术,分别检测哮喘患者、ABPA患者和正常对照受试者的血清蛋白质;经过生物信息软件分析,筛选出具有诊断价值的候选蛋白质生物标志物;利用多反应监测(multiple reaction monitoring,MRM)质谱和酶联免疫吸附测定法 (enzyme linked immunosorbent assay,ELISA),对候选靶标进行单一样本扩大数量和验证;并采用受试者工作特征(receiver operating characteristic,ROC)曲线,评估候选蛋白质生物标志物的诊断价值.研究发现:与正常对照组比较,哮喘组有7个差异表达蛋白质,ABPA组有15个差异表达蛋白质;与哮喘组比较,ABPA 组有 15个差异表达的蛋白质.MRM法的验证结果显示:与正常对照组比较,哮喘组的 SERPINF2、C6和 HABP2蛋白呈现显著性差异表达,ABPA组的SERPINF2和F10呈现显著性差异表达;ABPA组与哮喘组比较,CPN2和 IGLL5呈现显著性差异表达.ELISA法验证结果表明:ABPA患者血清的CSF1蛋白质水平明显低于哮喘患者的,而TNFRSF10C蛋白质水平明显高于哮喘患者的.ROC曲线结果显示:与正常对照组比较,哮喘组差异蛋白质C6的ROC曲线下面积(area under curve,AUC)为 0. 914,敏感度为 73. 3%,特异性为 99. 9%,ABPA组 F10的ROC曲线AUC为 0. 871,敏感度为 80. 0%,特异性为 85. 7%;与哮喘组比较, ABPA组中CPN2和 IGLL5联合诊断的AUC为0. 867,敏感度为86. 7%,特异性为80. 0%.由此可见,新筛选出的蛋白质生物标志物与哮喘或ABPA的发生发展密切相关,具有诊断与鉴别诊断的潜能.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47629588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and performance of hydroxyapatite-graphene oxide composite microspheres 羟基磷灰石-氧化石墨烯复合微球的制备与性能研究

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-07-01 DOI: 10.3724/sp.j.1249.2022.04447

Qiuhua Yuan, Xin Shi, Wenshan Wu, Xiaoyi Dai, Junxi Zhong, Yuan Yang, Youliang Jian, Ruilong Li, Tao Wang

{"title":"Preparation and performance of hydroxyapatite-graphene oxide composite microspheres","authors":"Qiuhua Yuan, Xin Shi, Wenshan Wu, Xiaoyi Dai, Junxi Zhong, Yuan Yang, Youliang Jian, Ruilong Li, Tao Wang","doi":"10.3724/sp.j.1249.2022.04447","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04447","url":null,"abstract":"Yuan, JIAN Youliang, LI Ruilong, and WANG Tao College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518071, Guangdong Province, P. R. China Abstract: Drug-loaded microspheres have been widely studied and applied in biomedical materials, but there are still some open problems such as low drug loading and sudden release. In order to solve such problems, hydroxyapatite-graphene oxide (HA-GO) composite microspheres were prepared by using hydroxyapatite (HA) and graphene oxide (GO). Firstly, spherical calcium carbonate-graphene oxide (CaCO3-GO) composites were synthesized by hard template method. Then, spherical hollow HA-GO composite microspheres were successfully prepared by a method of hydrothermal-assisted ion exchange. The effect of different synthesis conditions on the prepared HA-GO composites was studied. Through a series of measurements, such as X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman infrared spectroscopy, field emission scanning electron microscope (FESEM), ultraviolet visible spectrophotometer (UV-VIS), etc., the prepared samples were analyzed and characterized. The drug-loading performance of the microspheres was tested by using curcumin as the drug-loading model, and the drug-loading performance was evaluated by two indicators of encapsulation efficiency and drug-loading capacity. At","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46364169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coding structure of highway engineering information model 公路工程信息模型的编码结构

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-07-01 DOI: 10.3724/sp.j.1249.2022.04424

C. Liang, Changhai Wang

{"title":"Coding structure of highway engineering information model","authors":"C. Liang, Changhai Wang","doi":"10.3724/sp.j.1249.2022.04424","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04424","url":null,"abstract":"LIANG Cai and WANG Changhai Guangxi Communications Design Group Co. Ltd., Nanning 530029, Guangxi Zhuang Autonomous Region, P. R. China Abstract: Model identification code is the key to the data integration and effective transmission of highway engineering information model from the early stage of design to project construction and operation management, so as to form structured data for integrated management and analysis. By studying the existing information model classification and coding system, this paper analyzes the application and existing problems of various information model identification and code breakdown structures such as engineering system breakdown structure coding, space and classification coding, and work breakdown structure coding, comprehensively considers the different needs of construction management, measurement and payment, file management and big data utilization, and puts forward a \"five-grade\" highway engineering information model with location and version based on ISO 12006-2 framework, covering projects, construction sites, components, classification and coding framework. This model has been applied in the actual engineering construction management information system. The association and data transmission between construction management information and models are effectively realized through the application of model identification coding, which provides a basis for data sharing and exchange between information systems.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46410491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

1.7 μm self-synchronized picosecond pulsed random Raman fiber laser 1.7μm自同步皮秒脉冲随机拉曼光纤激光器

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-07-01 DOI: 10.3724/sp.j.1249.2022.04363

Yihuai Zhu, P. Shen, Shukai Zheng, Ling-peng Yu, Xing Luo, Jinzhang Wang, P. Yan, Q. Lü, Fan-long Dong, C. Guo, S. Ruan

引用次数: 0