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The complex behavior of Steel Plate Shear Walls (SPSW) is investigated herein through nonlinear FE simulations. A 3D detailed FE model is developed and validated utilizing experimental results available in the literature. The influence of key parameters on the structural behavior is investigated. The considered parameters are: the infill plate thickness, the beam size, the column size, the infill...
In this paper, in view of the research achievements of domestic and oversea researchers, the energy-saving manipulation strategies are designed for the train operation between stations by using the genetic algorithm, which synthesize the knowledge of train traction calculation and the characteristic of locomotive traction and braking. The energy-saving control strategy is based on the train maximum...
Labs-on-Chips (LoCs) revolutionize conventional biochemical processes and may even replace laboratories by integrating and minimizing their functionalities on a single chip. In a promising and emerging realization of LoCs, small volumes of reagents, so-called droplets, transport the biological sample and flow in closed channels of sub-millimeter diameters. This realization is called Networked Labs-on-Chips...
Optimization is a procedure of finding an optimal solution from the feasible search space. In single-objective optimization, the solution gets improved iteratively based on the objective function value. But, most of the real-world problems involve more than one objective. In such situation, many solutions are optimal which are known as Pareto-optimal solutions. In this paper, we aim to solve one real-world...
Recently, the electric vehicle has emerged as a powerful platform for mitigating energy crisis and reducing environmental pollution in the transportation sector. The major drawbacks of electrically powered automobile that limits its competitiveness with the internal combustion engine counterpart are the vehicle driving range and battery energy capacity. Hence, limited energy storage warrants the need...
Paper presents analytical and numerical results of evaluation utmost levels of vibroactivity for sources arising out of electrodynamical interaction of currents flowing through current-carrying elements in different electrotechnical devices and systems. It has shown that values of forces, arising out of such interaction, cannot be informative criteria for evaluations of such sources' vibroactivity...
After shooting action, basketball's movementtrajectory directly affects the shooting rate. In this paper, usingtheoretical basis of kinematic mechanics, analyzes the influenceof rotation of basketball on air resistance, and draws aconclusion that the influence of contra rotation on shooting ratediffers from that of forward-rotation. In the end, The papersuggestions that the strength of shooting should...
With the development of autonomous underwater vehicle (AUV), the long distance and large depth is the main development direction of AUV. Using the equipment of buoyancy adjusting instead of the motors of the bow and stern channel can save energy and increase endurance of AUV. Based on the oil capsules device of buoyancy adjusting in this paper, designed two different schemes: one is that oil capsules...
In this paper, we investigate the optimal control problem of heavy haul train on steep downward slope. Aiming to reduce train's maintenance cost and, most importantly, to ensure operation safety, a multi-stage dynamic programming model is formulated with the minimized in-train forces criteria. To solve the proposed model, this paper introduces a Q-learning algorithm considering operational requirements...
Nowadays electrical vehicles are in demand and the developments in their field are increasing which is required to improve the performance of the vehicle in terms of single range to cover. An efficient energy storage device is required to improve the performance and the efficiency of an EV. Power requirement of EV is dynamic in nature which requires a high energy and high power density source. A single...
In this paper, three electric vehicle (EV) powertrain simulators are analyzed by combining their modeling methodologies into a single MATLAB script file. A simplified electric vehicle powertrain (SEVP) simulator is compared with two widely used powertrain simulators, ADVISOR and FASTSim. Validation of the simulators is carried out using dynamometer test data on two models of the Nissan LEAF from the...
This paper first presents a simplified single wheel model for underground mining electric vehicles with bounds of system uncertainties. Then, a fuzzy parameter tuning (FPT) technique is used to adjust the parameters in the sliding mode control (SMC) to improve system stability and robustness at an unexpected external disturbances and unbound system uncertainties. The comparison of the simulation results...
The electric/hybrid vehicle are promising technologies and practical for the transport and the environment. For energy management, the vehicle longitudinal dynamics used to estimate vehicle power demands depend on several parameters, including its mass and its rolling conditions. This study compared the methods of estimating the rolling resistance coefficient and mass to establish energy planning...
We developed a method to present an impulsive resistance force by using the passive damping brake of a DC motor. The rapid pulsive change in the resistance forces preceding the main brake increased the perceived resistance of the brake. In a ranking task involving five naive participants, a damping brake with two preceding pulsive resistances was reported to deliver a resistance larger than that due...
We have developed a new rehabilitation support system, UR-System 2, for restoring the motor function of a plegic upper limb after a stroke. Its design is based on knowledge gained during clinical testing of the UR-System. The UR-System 2 was equipped with the facilitating function of elbow extension based on the proprioceptive neuromuscular facilitation technique and the measurement function for evaluating...
When towing a disabled vessel using one or multiple tugboats and/or pushers, it is important to estimate the direction and speed of the towed vessel, and the towing forces of tugboats and/or pushers each. This paper studies the prediction methods of hull resistance in calm water and added resistance due to external forces, that is, wave, wind, drifting, hull roughness, propeller locking and shallow...
Increasing demand for energy and environmental concerns have increased importance of energy-efficient transportation. In this manuscript, an energy-efficient train operation based on finding optimal speed profile is studied. As a nature-inspired metaheuristic approach, Firefly algorithm is employed to find optimal switching points of the train control signal. In problem formulation, energy consumption...
A hash function maps an arbitrary length of (longer) message into a fixed length of shorter string, called message digest. Inevitably there will be a lot of different messages being hashed to the same or similar digest. We call this collision or partial collision. By utilizing multiple processors from the CUNY High Performance Computing Center's facility, we locate partial collisions for MD5 and SHA-1...
With the superiority of compactness, high reliability and the great transmission capacity, gas-insulated lines (GIL) has been widely used especially in certain regions. However, free metal particles may be brought into the closed structure inevitably. To study the problem of metal-particles pollution in AC GIL, the electromechanics of one spherical metal particle is analysed in a pragmatic situation...
This paper reports on the development of a low-profile exoskeleton module to enable training of the fingers and thumb in grasp and release tasks. The design has been made as an add-on module for use with the ArmAssist arm rehabilitation system (Tecnalia, Spain). Variable-position springs and adjustable link lengths provide adaptability to fit a variety of users. Additive manufacturing has been utilized...
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