This study is a replication of a survey on personal networks conducted 7 years earlier in Tianjin, China. Comparing the results of the two surveys reveals a large amount of change. Tianjin residents now report having more ties to friends and to associates beyond work and family, and fewer workplace ties and far fewer family ties. Women have gained on men in the number of friends, and young peop...

*Correspondence: [email protected] School of Science, Tianjin Polytechnic University, Tianjin, 300387, China Abstract In this paper, we propose a simple and useful approach to design an observer for multiple time-delays nonlinear systems in a triangular form. By constructing a new Lyapunov-Krasovskii functional and using the differential mean-value theorem, the sufficient conditions for the e...

Quantitative Graph Theory: A new branch of graph theory and network science Matthias Dehmer1,2∗, Frank Emmert-Streib3,4∗, and Yongtang Shi 5,6 Department of Computer Science, Universität der Bundeswehr München, Germany Department of Mechatronics and Biomedical Computer Science, UMIT, Hall in Tyrol, Austria Computational Medicine and Statistical Learning Laboratory, Department of Signal Processi...

*Correspondence: [email protected]; [email protected] Department of Mathematics, Tianjin Polytechnic University, Tianjin, 300387, China Abstract Let E be a uniformly convex and uniformly smooth Banach space, let C be a nonempty closed convex subset of E, let {Tn} : C→ C be a countable family of weak relatively nonexpansive mappings such that F = ⋂∞ n=1 F(Tn) = ∅. For any given gauss x0 ∈ C,...

Yongning Ji∗,†, Mingjiang Zhang∗,†,‡,¶, Yuncai Wang∗,†, Peng Wang∗,†, Anbang Wang∗,‡, Yuan Wu†,‡, Hang Xu∗,§ and Yongning Zhang†,§ ∗Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, P. R. China †Institute of Optoelectronic Engineering, College of Physics and Optoelectronics, Taiyuan University of Techn...

The integrated development of Beijing-Tianjin-Hebei region has become one of the national economic development strategies in China. To understand this strategy, this paper studies the regional and industrial characteristics of the upcoming Beijing-Tianjin-Hebei (BTH) region, compares the BTH region with its existing counterparts in the Yangtze River Delta (YRD) region and the Pearl River Delta ...

Weiliang Wang 1, Dan Wang 1,*, Hongjie Jia 1, Guixiong He 2, Qing’e Hu 1, Pang-Chieh Sui 3 and Menghua Fan 4 1 Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China; [email protected] (W.W.); [email protected] (H.J.); [email protected] (Q.H.) 2 China Electric Power Research Institute, Haidian District, Beijing 100192, China; [email protected]....

* Correspondence: [email protected]. com School of Science, Tianjin Polytechnic University, Tianjin 300387, China Abstract This article considers both the static output feedback stabilization issue and outputfeedback guaranteed cost controller design of a class of discrete-time nonlinear systems with time-delay. First, by static output feedback controller, the new sufficient conditions for static...

1. Anhui Biomedical Institute, Anhui Medical University, Hefei, China 2. Division of Endocrinology, the Second Hospital, Harbin Medical University, Harbin, China 3. Division of Endocrinology, the First Hospital, Harbin Medical University, Harbin, China 4. Tianjin Medical University Metabolic Hospital, Tianjin, China 5. Division of Endocrinology, Tongren Hospital, Capital Medical University, Bei...

Fluoroquinolones, sulfonamides and macrolides were analyzed in soil samples collected from suburban areas in Tianjin, China. Fluoroquinolones were the predominant class of antibiotics. The mean total concentration of fluoroquinolones (33.56 μg/kg) was 30-fold higher than one of macrolides, which were the second dominant class antibiotics. Sulfonamides showed the lowest level in soil. The spatia...