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Jianmin Jia,Hui Zhang,Baiying Shi 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.12
The relationship between taxi travel patterns and public transportation disruption has not been extensively explored. In this study, we investigated the impact of public transportation disruption on the taxi mobility patterns during the metro shutdown in Washington, D.C.. Multiple data source, involving taxi trips, traffic analysis zone, and point of interest (POI) information, was collected to compare the taxi travel patterns before, during, and after the metro shutdown. The number, distance, and duration of taxi trips were found to be significantly higher during the metro shutdown; specifically, the number of taxi trips was found to be 19.8% larger. Furthermore, a POI auxiliary analysis was performed to investigate the variation in community structure during the disruption of public transport using the modularity maximization approach. The results of this study will be useful for the development of taxi scheduling strategies and traffic management.
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Jia Lyu,Yihua Wang,Linglong Liu,Chunming Wang,Yulong Ren,Cheng Peng,Feng Liu,Yunlong Wang,Mei Niu,Di Wang,Ming Zheng,Kunneng Zhou,Shaolu Zhao,Fuqing Wu,Haiyang Wang,Jianmin Wan 한국식물학회 2017 Journal of Plant Biology Vol.60 No.5
Differentiation from proplastids into chloroplasts isa light- and energy-dependent process. How this process isregulated is still poorly understood at the molecular level. We herein report a new putative plastidial adenine nucleotidetransporter, BRITTLE1-3 (referred to as OsBT1-3), encoded bythe rice (Oryza sativa) White Stripe Leaf 2 (WSL2) gene. Loss of OsBT1-3 function results in defective chloroplastbiogenesis, severely reduced photosynthetic efficiency, andfinally a white stripe leaf phenotype in the first four leaves. The expression levels of genes related to chlorophyllbiosynthesis and photosynthesis are drastically reduced,accompanied with over accumulation of reactive oxygenspecies (ROS) in the wsl2 mutant. OsBT1-3 is targeted tothe chloroplasts and it expresses in almost all tissues inplants, especially in young leaves. OsBT1-3 consists of 419amino acids and exhibits features of all mitochondrialcarrier proteins, including a typical transmembrane-spanningdomain and a highly conserved sequence motif designatedas the ‘mitochondrial energy transfer signatures’. Phylogeneticanalysis shows that OsBT1-3 is a putative plastidialadenine nucleotide transporter and is most closely relatedto ZmBT1-2. Together, these observations suggest that thenew putative adenine nucleotide transporter, OsBT1-3,plays an essential role in regulating chloroplast biogenesisand maintenance of ROS homeostasis during rice seedlingde-etiolation.
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Jianmin Shi,Xiaodai Jia,Yan Xing,Xiuxiu Bu,Qiang Lei,Qunqun Sun 아시아스포츠융합과학회 2023 Asia Pacific Journal of Applied Sport Sciences Vol.4 No.1
PURPOSE Based on theoretical evidence and previous literature, this study proposes research hypotheses and establishes a structural equation model (SEM) that includes variables such as motivation, goal orientation, satisfaction, and adherence. METHOD Study participants included skiers at the ski resorts located around Beijing. In total, 700 questionnaires were distributed, and 44 invalid questionnaires were removed for being incomplete or incorrect; 656 questionnaires were retained and analyzed using SPSS v. 26 and Amos v. 23. Descriptive statistics, exploratory factor analysis, confirmatory factor analysis, and structural equation modeling methods were used in the analyses. RESULT This study explored the relationship between motivation, goal orientation, satisfaction, and adherence in skier participants through a quantitative analysis. Through the establishment and verification of the structural equation mode, the following conclusions were drawn: First, motivation directly affects goal orientation. Second, motivation directly affects satisfaction. Third, motivation directly affects adherence. Fourth, goal orientation directly affects satisfaction. Fifth, goal orientation directly affects adherence. Sixth, satisfaction directly affects adherence. CONCLUSION To improve skiing adherence, Beijing ski resort operators should understand the motivation for skiing, formulate supporting policies and services, and enhance the goal orientation and satisfaction of skiers. This study provides some practical implications for ski resort operators that may increase the profit of ski resorts contribute to the sustainable development of Beijing skiing.
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Hui Zhang,Xu Li,Lele Zhang,Wei Wang,Jianmin Jia,Baiying Shi 대한토목학회 2021 KSCE Journal of Civil Engineering Vol.25 No.2
The various performances of buses at stations bring lots of difficulties for operators to manage them to improve the service quality. This paper proposes a data-driven framework to analyze the patterns of stations with network structure data, points of interest (POI) data and vehicle global positioning system (GPS) trajectory data. First, we build six indicators based on these data to measure the performance from station perspective. The results show that the number of POI around stations within 1 kilometer follows an exponential distribution. Moreover, the average headway and headway deviation of stations follow lognormal distributions. Second, we use agglomerative hierarchical clustering method to divided bus stations into different groups. Results indicate that the bus stations of Jinan could be divided into four groups with obvious characteristics. The findings could help operators to make exclusive strategies to manage bus systems.
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Zheng Chen,Gama Yang,Tingzhen Mu,Maohua Yang,Nadia A. Samak,Sumit Peh,Yunpu Jia,Xuemi Hao,Xuhao Zhao,Jianmin Xing 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.110 No.-
The highly efficient performance of H2S absorption is the crucial indicator for haloalkaliphilic biologicaldesulfurization (HBDS) because it immediately concerns the H2S removal efficiency and pH change ofalkaline solutions. Therefore, we investigated the effect of operating parameters on the H2S absorption’sperformance under haloalkaline conditions. The gas–liquid ratio and packing height significantly improveH2S removal efficiency, from 80% to 90% and 66% to 99%, respectively. The absorption temperature had atrivial impact on the H2S removal efficiency, and the maximum value appeared at 45 C. Additionally, alloperating parameters caused pH changes that varied in the acceptable range (0.1 to 0.5) during theabsorption process. A rate-based model was successfully developed to predict the haloalkaliphilic H2Sabsorption process accurately. Moreover, this model could be implemented to effectively evaluate theHBDS system’s stability and provide reliable theoretical guidance for the industrial HBDS process toensure good process stability.
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