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Based on an analysis of the congestion effect and changes in the speed of vehicle flow during morning and evening peaks in a large- or medium-sized city, the piecewise function is used to capture the rules of the time-varying speed of vehicles, which are very important in modelling their fuel consumption and CO2 emission. A joint optimization model of the green vehicle scheduling and routing problem with time-varying speeds is presented in this study. Extra wages during nonworking periods and soft time-window constraints are considered. A heuristic algorithm based on the adaptive large neighborhood search algorithm is also presented. Finally, a numerical simulation example is provided to illustrate the optimization model and its algorithm. Results show that, (1) the shortest route is not necessarily the route that consumes the least energy, (2) the departure time influences the vehicle fuel consumption and CO2 emissions and the optimal departure time saves on fuel consumption and reduces CO2 emissions by up to 5.4%, and (3) extra driver wages have significant effects on routing and departure time slot decisions.
This article was published in the following journal.
Name: PloS one
Various natural and manmade disasters during last decades have highlighted the need of further improving on governmental preparedness to emergency events, and a relief supplies distribution problem na...
This data article presents a description of a benchmark dataset for the multiple depot vehicle scheduling problem (MDVSP). The MDVSP is to assign vehicles from different depots to timetabled trips to ...
Effective video monitoring systems require optimization of camera and road network coverage, to exploit fully the hardware and software solutions in smart city traffic applications. Monitoring require...
Accidents, bad weathers, traffic congestions, etc. led to the uncertainties of travel times in real-life road networks, which greatly affected the quality of individual's life and the reliability of t...
This paper addresses the problem of makespan minimization on unrelated parallel machines with sequence dependent setup times. The symbiotic organisms search (SOS) algorithm is a new and popular global...
To assess the level of improvement in voiding function after lumbar to sacral ventral nerve re-routing procedure in Spinal Cord Injury and spina bifida patients
The problem of interest is that we are looking for new antibiotic treatments for bone and joint infections. Treatment for bone and joint infection is not standardized, which allows a wide ...
Surgical pain may require significant amount of opioids. This is a serious medical problem, especially in the elderly. New methods are needed to help control surgical pain. This study inve...
The purpose of this study is to determine whether green tea may lower the risk of certain cancers.
The investigators aim to study the effects of green tea and maté consumption on lipid and inflammatory profiles in dyslipidemic and overweight subjects.
The selection, appointing, and scheduling of personnel.
Part of the body in humans and primates where the arms connect to the trunk. The shoulder has five joints; ACROMIOCLAVICULAR joint, CORACOCLAVICULAR joint, GLENOHUMERAL joint, scapulathoracic joint, and STERNOCLAVICULAR joint.
Algae of the division Chlorophyta, in which the green pigment of CHLOROPHYLL is not masked by other pigments. Green algae have over 7000 species and live in a variety of primarily aquatic habitats. Only about ten percent are marine species, most live in freshwater. They are more closely related to the green vascular land PLANTS than any other group of algae.
Instructional use of examples or cases to teach using problem-solving skills and critical thinking.
Surgical procedure to relax the JOINT CAPSULE tissues in a joint that has a reduced range of motion due to CONTRACTURE or TISSUE ADHESIONS or joint deformities.
Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...