Human Capital, Education, and Entrepreneurs: Evidence from the Yangtze River Delta

This paper seeks to examine the relationship between education demand and entrepreneurs in the process of enhancing the growth of human capital in China. We develop a theoretical model that incorporates the important roles played by human capital, education and entrepreneurs. Then, we derive an immigration condition under which the demand for education depends on the existence of entrepreneurs. Finally, we test whether this condition holds true in China, using a panel data set from the Yangtze River Delta which is considered a key barometer of Chinese economy. The empirical results reveal a significant positive relationship between entrepreneurs and education demand in the Yangtze River Delta, suggesting that if we can find ways to promote the growth of entrepreneurial endeavors, we could spur the growth of education demand and further drive human capital accumulation in China

Impact of industrial linkages on firm performance in development zones

This article investigates the effect of industrial linkages on firm performance in Chinese development zones, using Jiangsu Province as a case study. An ordered response model based on the dependent variable being ordinal was developed. The empirical results reveal an insignificant relationship between industrial linkages and firm performance. Our interpretation of this finding mainly lies with the global and domestic challenges that have changed the way participating firms operate and organize in the development zones of Jiangsu. When many other economic factors take precedence over industrial linkages in driving superior firm performance, firms feel it less important to get closer to their suppliers or customers, therefore weakening the impact of industrial linkages. Although this article primarily focuses on development zones in Jiangsu Province, the findings and discussion will provide insights for other development zones in China that may be, reviewing their development strategies because most of them have similar development problems.Industrial linkages; Development zones

Entrepreneurship, Innovation and Economic Growth:The Case of Yangtze River Delta in China

This paper firstly discusses why the economic growth in the Yangtze River Delta has been slowed down recently and suggests a need totransform the current input-based economic growth pattern into aninnovation-based one. Next, through our theoretical analysis, we find that the change of current economic growth pattern is just the innovative reallocationof production factors, and the new economic growth driven by innovation is mainly initiated by the transmutation of entrepreneurship. Finally, we test our belief with real-world evidence. It shows that the Delta has formed a mechanism in which entrepreneurship and human capital mutually promote each other. However, the interactive relationship between R&D expenditure and entrepreneurship has not been developed in general. In addition, excessive government interventions will do harm to the growth of entrepreneurs and economic development.entrepreneurship, innovation and economic growth pattern

Application of Gaode OPEN API in the Fire-Fighting Facility Planning Evaluation

n recent years, big data has been extensively applied in urban planning and design area. However, its wider application is constrained by the data acquisition approach. Accordingly, many efforts have been made to accurately find and solve urban problems by mining legal open source internet data, which gradually becomes a hot topic among urban researchers. In this context, this study applies the Gaode OPEN API in the urban real-time traffic circle construction and fire-fighting facility planning evaluation taking Nanjing as example. First, a batch processing model is established on the basis of Gaode OPEN API, including automatic acquisition of real-time traffic data in the study area and extraction of average vehicle speed of all the roads during specified time period. It found that speed involves division of the whole Nanjing City into several characteristic zones. Then, a case study is conducted to construct the urban real-time traffic circle through python language and Arcgis software based on existing fire-fighting facilities. In the end, through a subsequent evaluation, it is found that the existing fire-fighting facility planning has a stark regional difference between urban central area and suburban area, which shows a low coverage rate of 22% and 39% for respond time of 6min and 8min respectively. This study provides an integrated approach for acquisition and processing of Gaode data, mining of its space-time features, and application in the planning evaluation practice. This approach demonstrates the advantages of streaming features and distributed processing of big data, effectively utilizes the real-time characteristics of big data in the emergency facility planning, and is expected to broaden ideas for data acquisition

Sharp Lower Bound for the Blow-up Rate of Solutions to the Magnetic Zakharov System without the Skin Effect

In this paper, we consider the Cauchy problem of the magnetic Zakharov system in a cold plasma without the skin effect in two-dimensional space: $$\begin{cases} & i E_{1t}+\Delta E_1-n E_1+\eta E_2 (E_1\overline{E_2}-\overline{E_1} E_2)=0, \\ & i E_{2t}+\Delta E_2-n E_2+\eta E_1(\overline{E_1} E_2-E_1\overline{E_2})=0, \\ & n_t+\nabla \cdot \textbf{v}=0, \\ & \textbf{v}_t+\nabla n+\nabla (|E_1|^2+|E_2|^2)=0, \\ \end{cases} \tag{G-Z}$$ with initial data $\left(E_{10}(x),E_{20}(x),n_{0}(x),\mathbf{v}_{0}(x)\right)$, where $\eta>0$ is a physical constant. Compared with the classical Zakharov system, (G-Z) contains two extra cubic coupling terms $E_2\left(E_1\overline{E_2}-\overline{E_1}E_2\right)$ and $E_1\left(\overline{E_1}E_2-E_1\overline{E_2}\right)$ generated by the cold magnetic field without the skin effect, which bring another difficulty. By making a priori estimates corresponding for these extra terms, we obtain the sharp lower bound of blow-up rate of the finite-time blow-up solutions to the Cauchy problem of (G-Z) in the energy space $\mathbb{H}_1=H^1(\mathbb{R}^2)\times H^1(\mathbb{R}^2)\times L^2(\mathbb{R}^2)\times L^2(\mathbb{R}^2)$ provided the initial data satisfy \begin{gather*} \frac{||Q||_{L^2(\mathbb{R}^2)}^2}{1+\eta} <||E_{10}||_{L^2(\mathbb{R}^2)}^2+||E_{20}||_{L^2(\mathbb{R}^2)}^2 <\frac{||Q||_{L^2(\mathbb{R}^2)}^2}{\eta}, \end{gather*} where $Q$ is the unique radially positive solution of the equation \begin{gather*} -\Delta V+V=V^3. \end{gather*} Namely, there is a constant $c>0$ depending on the initial data only such that for $t$ near $T$, \begin{gather*} \left\|\left(E_1,E_2,n,\textbf{v}\right)\right\|_{H^1(\mathbb{R}^2)\times H^1(\mathbb{R}^2)\times L^2(\mathbb{R}^2)\times L^2(\mathbb{R}^2)}\geqslant\frac{c}{ T-t }, \end{gather*} where $T$ is the blow-up time

Effects of acute ammonia exposure and post-exposure recovery on nonspecific immunity in Clam Cyclina sinensis

This study aimed to assess the toxicity of ammonia on clam Cyclina sinensis and the post-exposure recovery. With increased exposure to TAN, the alkaline phosphatase (AKP) activities after exposure showed a trend of growing initially and subsequently decreasing, whereas the AKP activities after post-exposure recovery showed an increasing trend. The AKP activities after post-exposure recovery were significantly higher than those in control. The acid phosphatase (ACP) activities in T1 and T2 after post-exposure recovery were higher than those in the control, whereas the ACP activities in T3, T4, and T5 after post-exposure recovery were significantly higher than those in the control. The lysozyme (LZM) activities in T1 and T2 after exposure were significantly higher than those in control, whereas the LZM activities in T3, T4, and T5 after exposure were significantly lower than those in the control. Overall, ACP and LZM in the clams exposed to a low level of TAN (≤ 40 mg/L) can recover to the normal levels completely. However, a 48h recovery period scarcely seems adequate to compensate for AKP, ACP, and LZM activities in the clams exposed to a high level of TAN (> 40 mg/L)