Pub Date : 2022-09-01DOI: 10.3724/sp.j.1249.2022.05600
Q. Luo, B. Lin, Mengqi Gu, Liang Yang, Xiaochun Zhang
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.
{"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}
Pub Date : 2022-09-01DOI: 10.3724/sp.j.1249.2022.05497
Yun Ma
{"title":"Effect of TiO<sub>2</sub> doping modification on structure and catalytic performance of UiO-66","authors":"Yun Ma","doi":"10.3724/sp.j.1249.2022.05497","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.05497","url":null,"abstract":"","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":"45022488","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}
Pub Date : 2022-09-01DOI: 10.3724/sp.j.1249.2022.05521
Maolin Ye, Xiaoqing Tan, Liqing Xu, Shanxiang Lü
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.
摘要:极性编码是一种理论上可以达到香农极限的信道编码技术，具有编码和解码复杂度低的优点。目前已成为5G通信中的信道编码解决方案之一。SCL译码算法是目前最常用的极化码译码方法，但它具有较高的存储复杂度和时间复杂度。快速连续对消(Fast- sc)译码算法可以有效降低译码复杂度，但存在可靠性低的问题。为了兼顾极化码的译码效率和可靠性，提出了一种适用于自适应信道的preFast-SCL译码算法。该算法结合了Fast-SC和SCL译码算法的优点。在解码开始时，使用Fast-SC算法快速获取一组解码结果并对其进行验证。如果验证通过，将作为结果输出，如果不通过，将使用SCL解码来确保可靠性。仿真结果表明，随着信道条件的改善，pre - fast - scl译码算法的复杂度逐渐降低。在加性高斯白噪声信道中，preFast-SCL的可靠性与SCL译码算法的可靠性基本一致。当信噪比为2时。在高信噪比条件下，preFast-SCL的解码复杂度比SCL降低45%，时间性能增益更好。
{"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}
Pub Date : 2022-09-01DOI: 10.3724/sp.j.1249.2022.05584
Dan Zhou, Ruixin Yang, Guobin Gu, Chujie Zhong, Yongcheng Shi, Wenyong Li
{"title":"Evaluation optimization method for site selection of urban emergency medical material distribution center","authors":"Dan Zhou, Ruixin Yang, Guobin Gu, Chujie Zhong, Yongcheng Shi, Wenyong Li","doi":"10.3724/sp.j.1249.2022.05584","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.05584","url":null,"abstract":"","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":"46276634","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}
Pub Date : 2022-09-01DOI: 10.3724/sp.j.1249.2022.05576
Anhai Zhong, Tian-tian Guo
{"title":"Numerical simulation of multi-cluster proppant distribution in horizontal wells","authors":"Anhai Zhong, Tian-tian Guo","doi":"10.3724/sp.j.1249.2022.05576","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.05576","url":null,"abstract":"","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":"48326318","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}
Similarly, it is highly likely to cause delayed treatment due to missed diagnosis and misdiagnosis. To improve the accuracy of the diagnosis of these two diseases, protein chip technology is used to detect serum proteins in asthma patients, ABPA patients, and normal control subjects; After analysis by bioinformatics software, candidate protein biomarkers with diagnostic value were selected; Utilizing multiple reaction monitoring (MRM) mass spectrometry and enzyme linked immunosorbent assay (ELISA) to expand the number of single samples and validate candidate targets; And the receiver operating characteristic (ROC) curve was used to evaluate the diagnostic value of candidate protein biomarkers. The study found that compared with the normal control group, there were 7 differentially expressed proteins in the asthma group and 15 differentially expressed proteins in the ABPA group; Compared with the asthma group, the ABPA group had 15 differentially expressed proteins The validation results of the MRM method showed that compared with the normal control group, SERPINF2, C6, and HABP2 proteins in the asthma group showed significant differential expression, while SERPINF2 and F10 proteins in the ABPA group showed significant differential expression; Compared with the asthma group, the ABPA group showed significant differences in the expression of CPN2 and IGLL5 The ELISA validation results showed that the serum CSF1 protein levels in ABPA patients were significantly lower than those in asthma patients, while the TNFRSF10C protein levels were significantly higher than those in asthma patients The ROC curve results showed that compared with the normal control group, the area under curve (AUC) of the differential protein C6 in the asthma group was 0 914 with a sensitivity of 73 3%, with a specificity of 99 9%, the ROC curve AUC of ABPA group F10 is 0 871 with a sensitivity of 80 0%, specificity is 85 7%; Compared with the asthma group, the AUC for the combined diagnosis of CPN2 and IGLL5 in the ABPA group was 0 867, sensitivity 86.7%, specificity 80 0%. It can be seen that the newly screened protein biomarkers are closely related to the occurrence and development of asthma or ABPA, and have the potential for diagnosis and differential diagnosis
{"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}
Pub Date : 2022-07-01DOI: 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
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
{"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}
Pub Date : 2022-07-01DOI: 10.3724/sp.j.1249.2022.04424
C. Liang, Changhai Wang
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.
{"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}
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