Energy-Efficient Urban Freight Logistics: the Set-up and Operation of Freight Quality Partnerships in European Cities

2016 ◽  
pp. 289-305
Author(s):  
Dimitrios Tsamboulas ◽  
Panayota Moraiti
Keyword(s):  
Energy Efficient ◽  
Urban Freight ◽  
European Cities ◽  
Freight Logistics ◽  
Set Up

scholarly journals LED Rail Signals: Full Hardware Realization of Apparatus with Independent Intensity by Temperature Changes

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1291
Author(s):  
Giuseppe Schirripa Schirripa Spagnolo ◽  
Fabio Leccese
Keyword(s):  
Temperature Sensor ◽  
Energy Efficient ◽  
Light Emitting Diode ◽  
Junction Temperature ◽  
Light Emitting ◽  
Temperature Changes ◽  
Wide Range ◽  
International Regulations ◽  
Long Lifetime ◽  
Set Up

Nowadays, signal lights are made using light-emitting diode arrays (LEDs). These devices are extremely energy efficient and have a very long lifetime. Unfortunately, especially for yellow/amber LEDs, the intensity of the light is closely related to the junction temperature. This makes it difficult to design signal lights to be used in naval, road, railway, and aeronautical sectors, capable of fully respecting national and international regulations. Furthermore, the limitations prescribed by the standards must be respected in a wide range of temperature variations. In other words, in the signaling apparatuses, a system that varies the light intensity emitted according to the operating temperature is useful/necessary. In this paper, we propose a simple and effective solution. In order to adjust the intensity of the light emitted by the LEDs, we use an LED identical to those used to emit light as a temperature sensor. The proposed system was created and tested in the laboratory. As the same device as the ones to be controlled is used as the temperature sensor, the system is very stable and easy to set up.

scholarly journals Energy Efficient Opportunistic Sensing Management in Fog Cloud Environment

2021 ◽  
Vol 10 (10) ◽  
pp. 20-26
Author(s):  
Anju Gupta ◽  
R K Bathla
Keyword(s):  
Energy Efficient ◽  
Cost Effective ◽  
Sensory Data ◽  
Computing Platform ◽  
Opportunistic Sensing ◽  
Battery Power ◽  
Wide Range ◽  
Sensor Cloud ◽  
Set Up ◽  
Potential Challenge

With so many people now wearing mobile devices with sensors (such as smartphones), utilizing the immense capabilities of these business mobility goods has become a prospective skill to significant behavioural and ecological sensors. A potential challenge for pervasive context assessment is opportunistic sensing, has been effectively used to a wide range of applications. The sensor cloud combines cloud technology with a wireless sensor, resulting in a scalable and cost-effective computing platform for real-time applications. Because the sensor's battery power is limited and the data centre’s servers consume a significant amount of energy to supply storage, a sensor cloud must be energy efficient. This study provides a Fog-based semantic for enabling these kinds of technologies quickly and successfully. The suggested structure is comprised of fundamental algorithms to help set up and coordinate the fog sensing jobs. It creates effective multihop routes for coordinating relevant devices and transporting acquired sensory data to fog sinks. It was claimed that energy-efficient sensor cloud approaches were categorized into different groups and that each technology was examined using numerous characteristics. The outcomes of a series of thorough test simulation in NS3 to define the practicality of the created console, as well as the proportion of each parameter utilized for each technology, are computed.

THE ARGUMENTATION FOR THE IMPLEMENTATION OF URBAN CONSOLIDATION CENTER FOR THE OLD TOWN IN GDAŃSK AS AN INDICATION OF SUSTAINABLE URBAN FREIGHT LOGISTICS

2017 ◽  
Vol 69 (0) ◽  
pp. 63-71 ◽  
Author(s):  
Maria Matusiewicz
Keyword(s):  
Urban Space ◽  
Urban Areas ◽  
Infrastructure Development ◽  
Historical Buildings ◽  
Policy Makers ◽  
Factors Affecting ◽  
Urban Freight ◽  
Freight Logistics ◽  
The City ◽  
Urban Consolidation

Distribution of goods in urban areas is one of the most important factors affecting the operation of the region but the management of these services is often overlooked by transport policy makers in Polish cities. Historical buildings create additional difficulties because they make the infrastructure development impossible. It is estimated that in large European cities approximately 25% of CO2 emissions, 30% of nitrogen oxides and 50% of particulates from transport are emitted by trucks and vans. The doctoral thesis presents methods used to optimize distribution processes in cities with historic buildings in Europe and around the world. It also presents the results of a research carried out in the Old Town of Gdańsk and proposes a method to optimize distribution processes for the area, which was the main objective of the work. The hypothesis of the trial has been formulated as follows: locating Urban Consolidation Center not far away from the center of the City of Gdańsk would bring tangible benefits for the city and all users of the urban space. The study used a method of analysis and criticism of literature; detailed study of a particular case and the method of observation. According to the design model, the proposed solution will bring tangible benefits to all users of space – residents, businesses and city authorities. The results of tests carried out on account of this thesis were provided to the city authorities.

Energy Reduction and Optimisation in Membrane Bioreactor Systems

2010 ◽  
Vol 5 (4) ◽  
Author(s):  
Guihe Tao ◽  
Kiran Kekre ◽  
Maung Htun Oo ◽  
Bala Viswanath ◽  
Aliman MD Yusof ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Specific Energy ◽  
Energy Efficient ◽  
Specific Energy Consumption ◽  
Pilot Scale ◽  
Energy Reduction ◽  
Energy Audit ◽  
Membrane Flux ◽  
Demonstration Plant ◽  
Set Up

One of the major components of MBR operating expenditure is energy consumption. This paper presents our six-year journey of energy reduction and optimization in MBR systems through various pilot and demonstration studies. Through comprehensive and systematic MBR optimisation studies, the specific energy consumption was reduced from 1.3 kWh m−3 to less than 0.8 kWh m−3 by increasing membrane flux and reducing aeration at 300 m3 per day pilot scale plants. Through energy audit, the key energy consumption components including process aeration, membrane scouring rate, SRT, MLSS level, MLSS recirculation, and energy efficient equipment selection were identified, and these were optimised one by one at 23,000 m3 per day municipal scale MBR demonstration plant after the baseline had been set up. The specific energy consumption was further reduced to 0.37 kWh m−3.

scholarly journals Enabling a Freight Traffic Controller for Collaborative Multidrop Urban Logistics

2017 ◽  
Vol 2609 (1) ◽  
pp. 77-84 ◽  
Author(s):  
Julian Allen ◽  
Tolga Bektaş ◽  
Tom Cherrett ◽  
Adrian Friday ◽  
Fraser McLeod ◽  
...  
Keyword(s):  
Third Party ◽  
Optimization Approach ◽  
Urban Centers ◽  
Urban Freight ◽  
The United Kingdom ◽  
True Value ◽  
Freight Traffic ◽  
Freight Logistics ◽  
Last Mile ◽  
The Many

There is increasing interest in how horizontal collaboration between parcel carriers might help alleviate problems associated with last-mile logistics in congested urban centers. Through a detailed review of the literature on parcel logistics pertaining to collaboration, along with practical insights from carriers operating in the United Kingdom, this paper examines the challenges that will be faced in optimizing multi-carrier, multidrop collection, and delivery schedules. A “freight traffic controller” (FTC) concept is proposed. The FTC would be a trusted third party, assigned to equitably manage the work allocation between collaborating carriers and the passage of vehicles over the last mile when joint benefits to the parties could be achieved. Creating this FTC concept required a combinatorial optimization approach for evaluation of the many combinations of hub locations, network configuration, and routing options for vehicle or walking to find the true value of each potential collaboration. At the same time, the traffic, social, and environmental impacts of these activities had to be considered. Cooperative game theory is a way to investigate the formation of collaborations (or coalitions), and the analysis used in this study identified a significant shortfall in current applications of this theory to last-mile parcel logistics. Application of theory to urban freight logistics has, thus far, failed to account for critical concerns including ( a) the mismatch of vehicle parking locations relative to actual delivery addresses; ( b) the combination of deliveries with collections, requests for the latter often being received in real time during the round; and ( c) the variability in travel times and route options attributable to traffic and road network conditions.

A novel energy efficient powered ankle prosthesis using four-bar controlled compliant actuator

2018 ◽  
Vol 232 (24) ◽  
pp. 4664-4675 ◽  
Author(s):  
Saikat Sahoo ◽  
Dilip Kumar Pratihar ◽  
Sudipta Mukhopadhyay
Keyword(s):  
Energy Consumption ◽  
Power Consumption ◽  
Energy Efficient ◽  
Optimization Problem ◽  
Stance Phase ◽  
Transmission Mechanism ◽  
Ankle Prosthesis ◽  
Proposed Model ◽  
Set Up ◽  
Compliant Actuator

A powered ankle prosthesis has the ability to replace a biological ankle, also it can remove the difficulties faced due to the usage of passive ankle prosthesis. However, the energy consumption of the set-up, weight and portability of the motor, and its electronics are still the issues to be addressed. This study is solely focused on the reduction of power consumption of the motor during the stance phase of locomotion. Thus, a compliant actuator controlled by the four-bar mechanism with a special rocker arrangement is proposed, which eventually can reduce the power consumption by a significant amount. The reduction of power consumption not only expands the run time, but also reduces the weight and cost of the prosthesis indirectly. An optimization problem is also formulated to optimize the links’ lengths and spring stiffness in order to mimic the behavior of a normal ankle joint and solved using a genetic algorithm. Finally, the analytical and simulation results of the proposed model in terms of energy consumption and required peak motor power are compared with that of some renowned powered ankle prosthesis developed using the widely used screw transmission mechanism, a popular compliance actuation technique and an existing four-bar mechanism.

scholarly journals Smart city for sustainable urban freight logistics

2021 ◽  
Vol 59 (7) ◽  
pp. 2079-2089
Author(s):  
Shenle Pan ◽  
Wei Zhou ◽  
Selwyn Piramuthu ◽  
Vaggelis Giannikas ◽  
Chao Chen
Keyword(s):  
Smart City ◽  
Urban Freight ◽  
Freight Logistics
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