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Developing a Model to Study the Climate Change Impact on River Bifurcations in Engineered Rivers

Chowdhury, M. Kifayath (author), Blom, A. (author), Ylla Arbos, C. (author), Schielen, R.M.J. (author)

Climate change is responsible for global shifts in precipitation patterns and an overall in-crease in global temperatures. The transi-tions are anticipated to modify the river hydro-graph and sea level. The changes to the hy-drograph are also likely to influence sediment flux. These alterations imply shifts in both up-stream and downstream...

abstract 2024

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Improving stormwater infiltration and retention in compacted urban soils at impervious/pervious surface disconnections with biochar

Chowdhury, Sraboni (author), Akpinar, Derya (author), Nakhli, Seyyed Ali Akbar (author), Bowser, Marcus (author), Imhoff, Elizabeth (author), Buisma-Yi, S.C. (author), Imhoff, Paul T. (author)

Urban development often results in compacted soils, impairing soil structure and reducing the infiltration and retention of stormwater runoff from impervious features. Biochar is a promising organic soil amendment to improve infiltration and retention of stormwater runoff. Soil at the disconnection between impervious and pervious surfaces...

journal article 2024

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Response of the Upper Dutch Rhine Bifurcation Region to Peak flows

Chowdhury, M. Kifayath (author), Blom, A. (author), Ylla Arbos, C. (author), Verbeek, Merel C. (author), Schropp, Max H.I. (author), Schielen, R.M.J. (author)

abstract 2023

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Semicentennial Response of a Bifurcation Region in an Engineered River to Peak Flows and Human Interventions

Chowdhury, M. Kifayath (author), Blom, A. (author), Ylla Arbos, C. (author), Verbeek, Merel C. (author), Schropp, Max H.I. (author), Schielen, R.M.J. (author)

A bifurcation in an engineered river system (i.e., fixed planform and width) has fewer degrees of freedom in its response to interventions and natural changes than a natural bifurcation system. Our objective is to provide insight into how a bifurcation in an engineered river responds to peak flows and human interventions. To this end, we analyze...

journal article 2023

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How Do Bifurcations in Engineered Rivers Respond to Sea level Rise?

Chowdhury, M. Kifayath (author), Blom, A. (author), Ylla Arbos, C. (author), Schielen, R.M.J. (author)

River bifurcations divide the water and sediment over two downstream branches or bifurcates. As the changing climate adjusts the boundary conditions (i.e., base level, hydrograph, and sediment flux) for bifurcations, it will affect their flow and sediment partitioning over the bifurcates. Our objective is to provide insight into the response of...

abstract 2023

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Understanding Perceptions of Cycling Infrastructure Provision and its Role in Cycling Equity

Jahanshahi, Danial (author), Costello, Seósamh B. (author), Dirks, Kim Natasha (author), Chowdhury, Subeh (author), van Wee, G.P. (author)

Ensuring equity is considered in all types of decision making, including with respect to cycling provision, is important. Studies have investigated equity in relation to provision of cycling infrastructure and facilities. However, identifying other factors that need consideration in cycling equity is important. This study explored the impact of...

journal article 2023

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Channel Bed Erosion Characteristics in the Upper Dutch Rhine Bifurcation Region

Chowdhury, M. Kifayath (author), Blom, A. (author), Ylla Arbos, C. (author), Verbeek, Merel C. (author), Schropp, M.H.I. (author), Schielen, R.M.J. (author)

conference paper 2022

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How Does a River Bifurcation System Respond to Peak Flows? A Case Study of the Upper Dutch Rhine Bifurcation Region

Chowdhury, M. Kifayath (author), Blom, A. (author), Ylla Arbos, C. (author), Verbeek, Merel C. (author), Schropp, Max H.I. (author), Schielen, R.M.J. (author)

Sediment transport capacity and supply of sediment to a river channel increase significantly during peak flow events. Here we study how a river bifurcation system (partitioning water and sediment over its downstream branches) responds to peak flow events. We focus on the Pannerdense Kop bifurcation in the Dutch Rhine River, an engineered system...

abstract 2022

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Application of Financial Flow Simulator (eSOSView™) for Analyzing Financial Viability and Developing a Sustainable Fecal Sludge Management Business Model in Kushtia, Bangladesh

Akbar Chinna Mohideen, Sheik Mohammed Shibl (author), Singh, Shirish (author), Chowdhury, Tanvir Ahamed (author), Brdjanovic, Damir (author)

To achieve SDG 6.2.1 (a) on safely managed sanitation services, several financial flow models (FFMs) and business models for the sanitation value chain have been implemented in Bangladesh and elsewhere; however, there is limited research on financial viability and sustainability of business models. Bangladesh has attained 99% sanitation...

journal article 2022

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Revisiting the debate: Are code metrics useful for measuring maintenance effort?

Chowdhury, Shaiful (author), Holmes, Reid (author), Zaidman, A.E. (author), Kazman, Rick (author)

Evaluating and predicting software maintenance effort using source code metrics is one of the holy grails of software engineering. Unfortunately, previous research has provided contradictory evidence in this regard. The debate is still open: as a community we are not certain about the relationship between code metrics and maintenance impact....

journal article 2022

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Effect of Lateral Outflow on Three-Dimensional Flow Structure in a River Delta

Chowdhury, M. Kifayath (author), Konsoer, Kory M. (author), Hiatt, Matthew (author)

Spatial and temporal patterns in three-dimensional flow structure are linked to channel processes and morphology in many environments. However, there is not yet an understanding of how the flow structure is influenced by channelized and gradually distributed lateral outflows that are often prevalent in river deltas. This study presents an...

journal article 2022

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Flow Structure at the Pannerdense Kop Bifurcation

Chowdhury, M. Kifayath (author), Blom, A. (author), Schielen, R.M.J. (author)

poster 2021

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Review of key findings and future directions for assessing equitable cycling usage

Jahanshahi, Danial (author), Chowdhury, Subeh (author), Costello, Seosamh B. (author), van Wee, G.P. (author)

Research studies on mode shift toward sustainable transport, particularly cycling, have become more common in the last decade. Despite some success in increasing cycling usage, there exist many barriers, both environmental and societal. This study provides a review of the key equity findings to date in cycling usage and identifies knowledge...

journal article 2021

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Examining circuity of urban transit networks from an equity perspective

Dixit, M. (author), Chowdhury, S.J. (author), Cats, O. (author), Brands, T. (author), van Oort, N. (author), Hoogendoorn, S.P. (author)

Circuity of transit networks, defined as the ratio of network to Euclidean distance traveled from origin to destination stop, has been known to influence travel behavior. In addition to the longer time spent in travel, for networks where fare is based on distance traveled, higher circuity also means higher fare for the same Euclidean distance...

journal article 2021

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Probing quantum gravity effects with quantum mechanical oscillators

Bonaldi, Michele (author), Borrielli, Antonio (author), Chowdhury, Avishek (author), Di Giuseppe, Gianni (author), Morana, B. (author), Piergentili, Paolo (author), Prodi, Giovanni A. (author), Sarro, Pasqualina M (author), Serra, E. (author)

Abstract: Phenomenological models aiming to join gravity and quantum mechanics often predict effects that are potentially measurable in refined low-energy experiments. For instance, modified commutation relations between position and momentum, that account for a minimal scale length, yield a dynamics that can be codified in additional...

journal article 2020

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Quantum Signature of a Squeezed Mechanical Oscillator

Chowdhury, A. (author), Vezio, P. (author), Bonaldi, M. (author), Borrielli, A. (author), Marino, F. (author), Morana, B. (author), Prodi, G. A. (author), Sarro, Pasqualina M (author), Serra, E. (author), Marin, F. (author)

Recent optomechanical experiments have observed nonclassical properties in macroscopic mechanical oscillators. A key indicator of such properties is the asymmetry in the strength of the motional sidebands produced in the probe electromagnetic field, which is originated by the noncommutativity between the oscillator ladder operators. Here we...

journal article 2020

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Examining women's perception of safety during waiting times at public transport terminals

Chowdhury, S.J. (author), van Wee, G.P. (author)

In many cities, public transport has a higher ridership level from women compared to men, yet most systems are not designed for them. Many female riders fear of being a victim. Most of their negative experiences are usually associated with the urban environment in and around stations/stops. Integrated public transport systems will require...

journal article 2020

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Quantum motion of a squeezed mechanical oscillator attained via an optomechanical experiment

Vezio, P. (author), Chowdhury, A. (author), Bonaldi, M. (author), Borrielli, Antonio (author), Marino, F. (author), Morana, B. (author), Prodi, G.A. (author), Sarro, Pasqualina M (author), Serra, E. (author), Marin, F. (author)

We experimentally investigate a mechanical squeezed state realized in a parametrically modulated membrane resonator embedded in an optical cavity. We demonstrate that a quantum characteristic of the squeezed dynamics can be revealed and quantified even in a moderately warm oscillator, through the analysis of motional sidebands. We provide a...

journal article 2020

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Calibrated quantum thermometry in cavity optomechanics

Chowdhury, A. (author), Vezio, P. (author), Bonaldi, M. (author), Borrielli, A. (author), Marino, F. (author), Morana, B. (author), Pandraud, G. (author), Sarro, Pasqualina M (author), Serra, E. (author)

Cavity optomechanics has achieved the major breakthrough of the preparation and observation of macroscopic mechanical oscillators in non-classical states. The development of reliable indicators of the oscillator properties in these conditions is important also for applications to quantum technologies. We compare two procedures to infer the...

journal article 2019

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Quantum thermometry in optomechanics

Chowdhury, A. (author), Vezio, P. (author), Bonaldi, M. (author), Borrielli, A. (author), Marino, F. (author), Morana, B. (author), Pandraud, G. (author), Pontin, A. (author), Sarro, Pasqualina M (author)

We describe a method to control the cavity detuning in optomechanics experiments. This helps accurate measurements of the asymmetry in the motional sidebands, that testify the quantum behavior of the oscillator and quantifies its occupation number.

conference paper 2019