Related Experiment Video
Updated: Aug 14, 2025
14:55
Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
Published on: January 20, 2023
3.4K
Novel model for integrated demand-responsive transit service considering rail transit schedule.
Yingjia Tan1, Bo Sun2, Li Guo3
1Shenzhen General Integrated Transportation and Municipal Engineering Design & Research Institute Co., Ltd., Shenzhen 518003, China.
Mathematical Biosciences and Engineering : MBE
|January 19, 2023
Summary
This study introduces an optimized model for demand-responsive transit (DRT) services, improving passenger travel time. The ant colony algorithm (ACO) efficiently solves complex transit optimization problems.
Area of Science:
- Operations Research
- Transportation Engineering
- Computer Science
Background:
- Demand-responsive transit (DRT) services face challenges in optimizing passenger journeys and transfers.
- Integrating DRT with major transit systems requires sophisticated planning models.
Purpose of the Study:
- To develop an optimization model for demand-responsive transit (DRT) services.
- To minimize total passenger travel time, including ride and transfer wait times.
- To enhance coordination between DRT, feeder buses, and metro schedules.
Main Methods:
- A mixed-integer linear programming model was formulated to optimize DRT operations.
- A two-stage heuristic using the ant colony algorithm (ACO) was developed to solve the NP-hard optimization problem.
- The model incorporates service time windows and synchronized transfers.
Main Results:
- The developed optimization model demonstrated higher efficiency in passenger, route, and operation planning compared to conventional methods.
- A case study in Chongqing, China, validated the model's effectiveness.
- The model successfully reduced overall passenger travel time.
Conclusions:
- The proposed optimization model and ACO-based heuristic provide an efficient solution for DRT services.
- This approach enhances the integration of DRT with public transit networks, improving user experience.
- The findings offer practical implications for urban transportation planning and operations.
Related Concept Videos
01:02Noncompartmental Analysis: Mean Transit, Absorption and Dissolution Time
135
When drugs are administered extravascularly, a comprehensive evaluation through noncompartmental analysis becomes imperative. This analytical approach considers various parameters that play a crucial role in understanding the pharmacokinetics of these drugs.
One of the key parameters is the mean transit time (MTT), which refers to the total duration required for drug molecules to transit through the body. MTT is determined by calculating the ratio of the area under the moment curve to the area...
One of the key parameters is the mean transit time (MTT), which refers to the total duration required for drug molecules to transit through the body. MTT is determined by calculating the ratio of the area under the moment curve to the area...
135
01:23Maximum Power Flow and Line Loadability
156
The maximum power flow for lossy transmission lines is derived using ABCD parameters in phasor form. These parameters create a matrix relationship between the sending-end and receiving-end voltages and currents, allowing the determination of the receiving-end current. This relationship facilitates calculating the complex power delivered to the receiving end, from which real and reactive power components are derived.
156
01:41Social Traps
22.5K
Social traps are negative situations where people get caught in a direction or relationship that later proves to be unpleasant, with no easy way to back out of or avoid. The concept was orignally introduced by John Platt who applied psychology to Garrett Hardin's "Tragedy of the Commons", where in New England herd owners could let their cattle graze in the common ground. This situation seems like a good idea, but an individual could have an advantage. If they owned...
22.5K
02:12Short-distance Transport of Resources
16.3K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.3K
01:24Bus Impedance Matrix
155
Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
155
01:24Reinforcement Schedules
227
Positive reinforcement is a powerful method for teaching new behaviors to both animals and humans. B.F. Skinner demonstrated this with his experiments using rats in a Skinner box. When a rat pressed a lever, it received a food pellet. This immediate reward encouraged the rat to repeat the behavior. This method, where a reward follows every instance of the behavior, is known as continuous reinforcement. It is highly effective for establishing new behaviors quickly.
Once a behavior is learned,...
Once a behavior is learned,...
227