Related Experiment Video
Updated: Jun 11, 2026
08:15
Data Communication Based on MQTT in a Polymer Extrusion Process
Published on: July 15, 2022
A method for controlling enterprises access to an eco-industrial park
Li Zhu1, Jianren Zhou, Zhaojie Cui
1School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China.
The Science of the Total Environment
|July 14, 2010
Summary
A new method for selecting eco-industrial park (EIP) enterprises uses an indicator system and an optimal degree evaluation model. This approach ranks candidate companies, prioritizing those best suited for EIP integration and efficiency.
Area of Science:
- Environmental Science
- Industrial Ecology
- Systems Engineering
Background:
- Eco-industrial parks (EIPs) rely on member enterprises for stability and efficiency.
- Effective selection and control of enterprises are crucial for EIP success.
- Existing methods may not adequately assess enterprise suitability for EIPs.
Purpose of the Study:
- To develop a novel method for evaluating and selecting enterprises for EIPs.
- To establish a comprehensive access indicator system for candidate enterprises.
- To introduce an extendable optimal degree evaluation model for enterprise ranking.
Main Methods:
- Developed a seven-primary and twenty-seven-secondary indicator system for enterprise assessment.
- Proposed indicators from both EIP and enterprise perspectives (e.g., industrial chain matching, eco-design, economic benefit).
- Applied an extendable optimal degree evaluation model involving correlation functions, weight assignment, and optimal degree calculation.
Main Results:
- The indicator system provides a robust basis for evaluating potential EIP members.
- The optimal degree evaluation model successfully ranks enterprises based on their suitability.
- Case study of Yantai Economy Technology Development Zone EIP demonstrates practical application.
Conclusions:
- The proposed method offers a practical tool for controlling enterprise access to EIPs.
- The indicator system and evaluation model enhance EIP stability and efficiency.
- Further research is recommended to validate indicators and the evaluation method's effectiveness.
Related Concept Videos
01:28Bioreactor Controls-I
Maintaining optimal conditions within fermenters is essential for maximizing microbial productivity and ensuring process efficiency. This lesson focuses on key parameters—temperature, foam, pH, carbon dioxide, oxygen, and pressure—and their precise measurement and control strategies in fermentation systems.Temperature ControlTemperature regulation is critical due to the exothermic nature of many fermentation processes. In small laboratory fermenters, temperature is commonly monitored using...
01:26PD Controller: Design
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
01:28Global Regulatory Systems
Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
01:03Drug Control Governance: Regulatory Bodies and Their Impact
Drug control governance involves the oversight and regulation of pharmaceuticals to ensure their safety and efficacy while preventing illegal drug use and trafficking. Regulatory bodies, including the US Food and Drug Administration (FDA) and the European Union's European Medicines Agency (EMA), play a central role in this process. These agencies evaluate the safety and efficacy of drugs before they can be marketed. They fund clinical trials and assess the benefits and risks associated with a...
01:30Control of Power Flow
There are several methods to control power flow in power systems:
01:22Bioreactor Controls-III
Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...