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A Negotiable Evolutionary Algorithm (NEA) meta-heuristic approach is presented in this paper for solving the Integrated Production Planning and Scheduling (IPPS) problem in Flexible Manufacturing Systems (FMS). The NEA approach addresses the rationales that we have identified as the key features required for effectively solving complex IPPS problems. Considerable experiments have been conducted and...
We consider the design of a multi-input multi-output (MIMO) transmission system equipped with distributed, single-antenna amplify-and-forward relays. In particular, we consider how to optimize the complex forwarding coefficients of the relays to maximize the system capacity. Existing studies on MIMO relay network designs mostly concentrate on the case of single relay with multiple antennas, whose...
This paper addresses the state-of-the-art nano science and technology regarding next generation high density microelectronics packaging applications, including carbon nanotubes (CNTs) for electrical/thermal interface materials, nano alloys for low temperature surface mount assembly and molecular wires for electrical interconnects.
Zero-Moment Point (ZMP) is the most popular concept that is applied to stabilize the gait motion of a biped robot. However, the computation of the ZMP position and the dynamic model is highly complex, and so requires a considerable time. Therefore, to eliminate complex computation, this work designs a new locomotion control system for humanoid robots, which yields walking gait characteristics that...
Over the last decade, workflows have been established as a mechanism for scientific developers to create simplified views of complex scientific processes. However, there is a need for a comprehensive system architecture to link scientific developers creating workflows with researchers launching workflows in large scale computing environments. We present the architecture for the CAMERA 2.0 Cyber infrastructure...
Ranging and localization are some of the key applications in a wireless sensor network. Good accuracy can be obtained if the signals captured are of good qualities. In a practical scenario, crystal clock time drift in the devices in a wireless sensor network can greatly influence the ranging and localization accuracy. However, crystal clock time drift can be overcome by having multiple transmissions...
In this work, we propose a new technique for comprehensive scanner matching to fundamentally improve scanner productivity in a Giga fab. The proposal covers matching solutions for both CD and overlay fingerprints among scanners. CD matching strategy has three main components. The first part is to apply model-based scanner tuning for scanner optics matching. The second part is to apply hotplate-tuning...
An inversion technique for estimating the structure parameters of layered media covered by a rough surface based on a genetic algorithm is proposed in this work. A theoretical model of scattering from three-dimensional arbitrary layered media with a 3D infinite rough surface based on the small perturbation method (SPM) is employed to calculate the forward scattering problem. The backscatting coefficients...
Indoor localization is becoming an important application for wireless sensor networks. In order to determine sensors location, ranging packets need to be transmitted. Therefore, a good scheduling scheme is needed in order to avoid collision during packet transmission. Current wireless cellular network allows sensors inside the network to transmit without packet collision by using frequency reuse method...
The purpose of this study is to find a simplified model which can be used in the optimal process to simplify the optimal design reasonably in conduits with corrugated wall, encountered in commercial plate heat transfer exchanger (PHE). The numerical model of this study is verified by the published experiment data in the previous literature. The results of this present study are shown that the proposed...
Orthogonal frequency-division multiplexing (OFDM) transmission in time-varying channels suffers from intercarrier interference (ICI). Existing ICI countermeasures usually address a few dominant ICI terms only and treat the residual as similar to white noise. We show that the residual ICI has high normalized autocorrelation and that this normalized autocorrelation is insensitive to the maximum Doppler...
Gate stack etch profile-induced reliability issues are reviewed and discussed. A taper nitride profile, which blocks source/drain (S/D) implantation, induces an unwanted n- region. In other words, residual charges above the junctions can deplete the n- much easily and cut off the channel formation. This will cause poor string resistance distribution, worse endurance behavior, program and erase (P/E)...
This paper studies the development of novel, non-invasive external dynamic hydraulic pressure muscle stimulation for bone quality enhancement, and the evaluation of the effects of this dynamic hydraulic pressure stimulation on muscle strength to further delineate the bone fluid flow mechanism. Trabecular bone structure of proximal metaphysis of the right tibia is scanned using ??CT, and bone porosity...
In this paper, an advanced approach is proposed for vehicle routing problems with time windows (VRPTW). It takes the advantages of fuzzy c-means (FCM), simulated annealing, and tabu search for VRPTW. The Solomon's problem instances are used for verifying the developed approach. Based on the number of vehicles required and the traveling distance, good results are obtained when the number of customers...
A very important quality factor of a transponder is its threshold field strength which is a result of the performance of the integrated circuit (IC) and the loop antenna. This is very important for near field communication (NFC) applications to ensure a fast and reliable communication between the active device and the transponder with a minimum of battery power. In this paper a new approach using...
Vertically self-aligned gallium nitride nanorod arrays grown by plasma-assisted molecular-beam epitaxy are shown to behave as subwavelength optical media in both their discrete and integrated forms, which have important implications for optoelectronic applications.
This paper studies the feasibility of using force measurement to detect wire vibration for the evaluation of wire bond integrity. In this system, a tapping probe sends a single pulse or multiple pulses of controlled motion to the substrate adjacent to a bond end. This mechanical shock induces vibration propagation to the wire along and through the neighbouring materials. Another probe of a micro force...
Linear motion carriage with opposing air bearings arrangement for achieving preload force is the target of the study. Such arrangement for preloading the air bearings requires high degree of parallelism between the two opposing bearing surfaces. By introducing a compliant mechanism behind each of the air bearing pads at one bearing surfaces, the parallelism requirements as well as the flatness of...
The advances of semiconductor technology are highly dependent on the advances of polymeric materials. These include the use of polymers as adhesives (both conductive and nonconductive), interlayer dielectrics (low-k, low loss dielectrics), encapsulants (discrete and wafer level packaging), embedded passives (high-k and high-Q materials), superhydrophobic selfcleaning lotus effect surfaces, etc. In...
This paper presents the integration of the fabrication processes for an implantable multi-analyte biochip system. The implantable biochip system has a microfluidic channel in which an electrochemical biosensor and a dielectrophoresis (DEP) micropump are fabricated by surface micromachining. The enzyme-based biosensor consists of three electrodes and detects the glucose level instantaneously by utilizing...
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