On-line dynamic station redeployments in bike-sharing systems

Bike-sharing has seen great development during recent years, both in Europe and globally. However, these systems are far from perfect. The uncertainty of the customer demand often leads to an unbalanced distribution of bicycles over the time and space (congestion and/or starvation), resulting both in a loss of customers and a poor customer experience. In order to improve those aspects, we propose a dynamic bike-sharing system, which combines the standard fixed base stations with movable stations (using trucks), which will able to be dynamically re-allocated according to the upcoming forecasted customer demand during the day in real-time. The purpose of this paper is to investigate whether using moveable stations in designing the bike-sharing system has a significant positive effect on the system performance. To that end, we contribute an on-line stochastic optimization formulation to address the redeployment of the moveable stations during the day, to better match the upcoming customer demand. Finally, we demonstrate the utility of our approach with numerical experiments using data provided by bike-sharing companies

New trends in logistics

The purpose of this study is to make the point of the situation in the logistics world considering the complex scenarios in which it operates, and based on the trends observed to hypothesize the future scenarios and the impacts they have on the economy, on individuls and on logistics processes. Logistics in fact improve efficiency and therefore reduces costs and improve productivity in many sectors, from manufacturing to retail. The economic growth has always been the result of revolutions or more innovation in productivity, like the steam engin revolutions, mass production model (Ford case) and 1970s the industrail automation. These innovations have boosted the economy because they have improved productivity, more productivity means greater growth in the economy. Logistics is the focus of the new industrial revolutions and it’s a real chance for any business. Proper use of this powerful tools will lead out of recession

Efficiency and fairness in ambulance planning

Mei, R.D. van der [Promotor]Bhulai, S. [Promotor

The Creative Underclass

As an undergraduate at Brown University, Tyler Denmead founded New Urban Arts, a nationally recognized arts and humanities program primarily for young people of color in Providence, Rhode Island. Along with its positive impact, New Urban Arts, under his leadership, became entangled in Providence's urban renewal efforts that harmed the very youth it served. As in many deindustrialized cities, Providence's leaders viewed arts, culture, and creativity as a means to drive property development and attract young, educated, and affluent white people, such as Denmead, to economically and culturally kick-start the city. In The Creative Underclass, Denmead critically examines how New Urban Arts and similar organizations can become enmeshed in circumstances where young people, including himself, become visible once the city can leverage their creativity to benefit economic revitalization and gentrification. He points to the creative cultural practices that young people of color from low-income communities use to resist their subjectification as members of an underclass, which, along with redistributive economic policies, can be deployed as an effective means with which to both oppose gentrification and better serve the youth who have become emblematic of urban creativity

The Creative Underclass

As an undergraduate at Brown University, Tyler Denmead founded New Urban Arts, a nationally recognized arts and humanities program primarily for young people of color in Providence, Rhode Island. Along with its positive impact, New Urban Arts, under his leadership, became entangled in Providence's urban renewal efforts that harmed the very youth it served. As in many deindustrialized cities, Providence's leaders viewed arts, culture, and creativity as a means to drive property development and attract young, educated, and affluent white people, such as Denmead, to economically and culturally kick-start the city. In The Creative Underclass, Denmead critically examines how New Urban Arts and similar organizations can become enmeshed in circumstances where young people, including himself, become visible once the city can leverage their creativity to benefit economic revitalization and gentrification. He points to the creative cultural practices that young people of color from low-income communities use to resist their subjectification as members of an underclass, which, along with redistributive economic policies, can be deployed as an effective means with which to both oppose gentrification and better serve the youth who have become emblematic of urban creativity