Search results for "Municipal"

Improved route planning and scheduling of waste collection and transport

2006

The collection of waste is a highly visible and important municipal service that involves large expenditures. Waste collection problems are, however, one of the most difficult operational problems to solve. This paper describes the optimization of vehicle routes and schedules for collecting municipal solid waste in Eastern Finland. The solutions are generated by a recently developed guided variable neighborhood thresholding metaheuristic that is adapted to solve real-life waste collection problems. Several implementation approaches to speed up the method and cut down the memory usage are discussed. A case study on the waste collection in two regions of Eastern Finland demonstrates that sign…

Las aljamas mudéjares valencianas en la baja Edad Media

1993

Las aljamas, sistema de gobierno local de la minoría mudéjar durante la baja Edad Media, tuvieron una doble funcionalidad basada en la normalización de la vida cotidiana y en el control de las actividades de esta minoría. Mientras en el plano normativo se mostraba una legitimidad basada en el mutuo respeto, siempre bajo el control de la autoridad pública cristiana, la vida cotidiana de las morerías fue el reflejo de unas relaciones de dominación de carácter social clasista. El peso de las oligarquías locales mudéjares se difunimó en la subordinación a unas instituciones cristianas cada vez más poderosas.

Intentos en la articulación del mercado comarcal: el camino vecinal de Alberic a Alzira, 1853 - 1858

1983

A multi-objective approach to solid waste management

2010

The issue addressed in this paper consists in the localization and dimensioning of transfer stations, which constitute a necessary intermediate level in the logistic chain of the solid waste stream, from municipalities to the incinerator. Contextually, the determination of the number and type of vehicles involved is carried out in an integrated optimization approach. The model considers both initial investment and operative costs related to transportation and transfer stations. Two conflicting objectives are evaluated, the minimization of total cost and the minimization of environmental impact, measured by pollution. The design of the integrated waste management system is hence approached i…

Municipal waste management issues

2018

Landfill Culture: Some Implications to Degrowth

2016

To some extent, waste is just one more sign of the unsustainability of growth. Waste from industrial and socio-economic metabolism must be understood as any unusable material left over after a job, function or operation has been completed, which however, retains the ability to disrupt natural systems and interfere with them as one of its inherent properties. As part of such waste, Municipal Solid Waste (MSW) represents the unusable (or underused) and rejected fraction of the material resources mobilized by the sophisticated urban and/or industrial ecosystem. Although the volume of MSW is relatively small compared to other waste types, it is increasingly important as a result of its steady r…

Municipal Solid Waste Management in the Accra Metropolitan Area, Ghana

2003

Municipal solid waste management in Accra, Ghana, is at present delivered in an unsustainable manner. Due to uncontrolled urbanisation, large quantities of waste are generated daily in Accra, and this exerts much pressure on an over strained solid waste management system. Coupled with weak institutional capacity, and lack of resources, both human and capital, the city authorities face difficulties in ensuring that all the waste generated in the city is collected for disposal. Home collection of waste is limited to high and, some middle income areas while the poor are left to contend with the problem on their own. This leads to indiscriminate disposal of waste in surface drains, canals and s…

Parallel and Distributed Resource Allocation With Minimum Traffic Disruption for Network Virtualization

2017

Wireless network virtualization has been advocated as one of the most promising technologies to provide multifarious services and applications for the future Internet by enabling multiple isolated virtual wireless networks to coexist and share the same physical wireless resources. Based on the multiple concurrent virtual wireless networks running on the shared physical substrate, service providers can independently manage and deploy different end-users services. This paper proposes a new formulation for bandwidth allocation and routing problem for multiple virtual wireless networks that operate on top of a single substrate network to minimize the operation cost of the substrate network. We …

Energy-aware design for wireless mesh networks

2014

International audience; Wireless mesh networks (WMNs) are the next step in the development of the wireless architecture, delivering wireless services for a large variety of users in personal, local, campus, and metropolitan areas. Energy efficiency solutions are becoming more vital for both local access networks and wireless networks and Green IT has attracted a considerable attention. However, the application of green network for wireless mesh networks has seldom been described in the literature. However, WMNs infrastructure devices are always active. Thus, during lower traffic periods the energy consumption is the same as in busy hours, while it would be possible to save a large amount of…

A survey of wireless data center networks

2015

Data centers are becoming more and more popular for a wide variety of applications. However, the efficiency of data centers are restricted by many issues like cabling and maintenance problems in addition to performance problems like oversubscription. Wireless technology was proposed as it has the capability and the flexibility to offer feasible approaches to solve some of these problems. In this paper, we conduct a deep investigation about wireless data center networks, describe some works that enhance the performance of the network, then give some remarks and critiques. 2015 IEEE. Scopus