![]() ![]() ![]() Kill people who go to work in Dnipro and Kyiv. The air alarm does not subside throughout Ukraine. Unfortunately, there are dead and wounded. Take care of yourself and your loved ones. Well, unlike many news organisations, we have no sponsors, no corporate or ideological interests. We don't put up a paywall – we believe in free access to information of public interest. Media ownership in Australia is one of the most concentrated in the world ( Learn more). Since the trend of consolidation is and has historically been upward, fewer and fewer individuals or organizations control increasing shares of the mass media in our country. According to independent assessment, about 98% of the media sector is held by three conglomerates. This tendency is not only totally unacceptable, but also to a degree frightening). We endeavour to provide the community with real-time access to true unfiltered news firsthand from primary sources. It is a bumpy road with all sorties of difficulties. Our website is open to any citizen journalists and organizations who want to contribute, publish high-quality insights or send media releases to improve public access to impartial information. You and we have the right to know, learn, read, hear what and how we deem appropriate.Īll donations are kept completely private and confidential.All over the world, huge numbers of perishable goods are transported from suppliers to recipients every day. Some perishable products such as foods and medicine require a special treatment during delivery due to their limited lifetime, and all perishable products must be transported as quickly as possible before they spoil. In addition to the time limitation on transport, high frequency of transportation may lead to high transportation cost, making the optimization of transportation cost for delivering perishable products very important in this industry. In addition, high frequency of transportation may also contribute to air pollution. In order to address this problem, this study proposes a green vehicle routing problem (VRP) for perishable products which optimizes the operational cost, deterioration cost, carbon emissions and customer satisfaction. The proposed VRP model also considers time windows, different travelling time during peak hour and off-peak hour, and working hours. This paper solves the proposed model using a many-objective gradient evolution (MOGE) algorithm. GE algorithm is a new metaheuristic which was originally proposed for continuous problems with a single objective. However, this study improves the original GE algorithm with discretization, non-dominated sorting, and crowding distance approaches. The proposed model and algorithm are employed to solve a fruit distribution problem. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |