A novel Lamb wave resonator with fully suppressed acoustic radiation in water is proposed for high-resolution mass-sensitive detection of biomolecules. The elimination achieved by slowing down the to a velocity lower than sound speed water. This enables high-quality-factor resonance and reduces sensing frequency noise. High aspect ratio electrodes (HAREs) are used slow wave. elastic large surfa...

This note revisits a paper from Velan and Florian [Velan and Florian(2002)] dealing with the entropy condition in traffic flow models. It aims to clarify the application of this condition for non-differentiable fundamental diagrams and then to correct some misunderstandings that appear in the above-mentioned paper. Notably, this note clearly exhibits that the non-smoothness of the fundamental d...

We present in this paper a linear programming framework to address freeway control applications such as ramp metering. After showing the equivalence between the LWR model and a linear optimization problem, several extensions are introduced to model the ramp queues and the capacity drop phenomenon. A wide range of objective functions which are relevant in traffic engineering are then introduced ...

We present a hierarchical control framework to allow for robust manipulation and exploration of objects with unknown shape, mass, and friction. The framework is divided into 3 layers: joint-level, tactile servoing, and visual servoing. While the middle layer provides “blind” surface exploration skills, maintaining desired contact patterns, the visual layer monitors and controls the actual objec...

The amount of electrical energy produced over the lifetime of coal, LWR fission, DTfusion, and wind power plants is compared to the total amount of energy required to procure the fuel, build, operate, and decommission the power plants. The energy payback ratio varies from a low of 11 for coal plants to a high of 27 for DT-fusion plants. The magnitude of the energy investment and the source of t...

This paper treats the problem of optimizing a coordinated ramp metering strategy based on a distributed macroscopic traffic model. The Lighthill, Whitham and Richards (LWR) model is extended to include on/off-ramps with on-ramp flow saturations and an optimal control formulation is proposed. Using optimization techniques in Banach spaces, a solution is shown to exist and the necessary optimalit...

We extend the classical LWR traffic model allowing different maximal speeds to different vehicles. Then, we add a uniform bound on the traffic speed. The result, presented in this paper, is a new macroscopic model displaying 2 phases, based on a non-smooth 2× 2 system of conservation laws. This model is compared with other models of the same type in the current literature, as well as with a kin...

Reference should be written as: Abaid, M (2014) " Evaluation of Jatropha Curcas as future energy crop in some African countries " TRITA-LWR Degree Project LWR-EX 15:02 Evaluation of Jatropha Curcas as future energy crop in some African countries iii SUMMARY This report describes Jatropha Curcas as a source of biofuel in some African countries mainly: Sudan, Ethiopia, Kenya and Tanzania. Nowaday...

A mathematical macroscopic traffic flow model known as Lighthill, Whitham and Richards (LWR) model appended with a closure nonlinear velocity-density relationship yielding a quasilinear first order (hyperbolic) partial differential equation as an initial boundary value problem (IBVP) was considered. The traffic model IBVP by finite difference method which leads to a first order explicit upwind ...

In this study, the mass flow in double-strata nuclear fuel cycle is analysed based on mass inventory balance model, and the cost evaluation is carried out. As the commercial reactor fuel cycle, which is assumed to be sustainable in a significantly long term, the following different reactors and fuel cycles are considered: (1) Scheme of light water reactor (LWR-UOX and -MOX) based on sea water u...