Yilan, Taiwan
Yilan, Taiwan

The National Ilan University is a public university in Yilan City, Yilan County, Taiwan. Wikipedia.

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This paper presents an evolutionary optimal fuzzy system with information fusion of heterogeneous distributed computing and polar-space dynamic model for online motion control of Swedish redundant robots. The intelligent fuzzy system incorporated with the parallel metaheuristic Bacteria Foraging Optimization (BFO)-Artificial Immune System (AIS), called FS-PBFOAIS and its field-programmable gate array (FPGA) realization to optimal polar-space online motion control of four-wheeled redundant mobile robots. This hybrid paradigm gains the benefits of Taguchi quality method, BFO, AIS, distributed processing, and FPGA technique. Experimental results are conducted to present effective optimization and high accuracy of the proposed FPGA-based FS-PBFOAIS tracking controller. Finally, the comparative works are provided to demonstrate the superiority of the FPGA-based FS-PBFOAIS polar-space redundant controller over other conventional control methods. © 1982-2012 IEEE.

Zhou L.,Shanghai JiaoTong University | Chao H.-C.,National Ilan University
IEEE Network | Year: 2011

An important challenge for supporting multimedia applications in the Internet of Things is the security heterogeneity of wired and wireless sensor and actuator networks. In this work, we design a new and efficient media-aware security framework for facilitating various multimedia applications in the Internet of Things. First, we present a novel multimedia traffic classification and analysis method for handling the heterogeneity of diverse applications. Then a media-aware traffic security architecture is proposed based on the given traffic classification to enable various multimedia services being available anywhere and anytime. Furthermore, we provide a design rule and strategy to achieve a good trade-off between a systems flexibility and efficiency. To the best of our knowledge, this study is the first to provide general media-aware security architecture by jointly considering the characteristics of multimedia traffic, security service, and the Internet of Things. © 2011 IEEE.

Yeh M.-H.,National Ilan University
Signal Processing | Year: 2012

A new method for computing complex bidimensional empirical mode decomposition (BEMD) is presented in this paper. The proposed complex-BEMD uses four quadrant spectra to apply standard BEMD to four real-valued 2D signals. The so-generated intrinsic mode functions (IMFs) are 2D complex-valued, which facilitates the extension of the standard BEMD to the complex domain. The proposed complex-BEMD can be successful for the analysis of real-world 2D complex-valued signals, such as 2D NMR signals. Moreover, the proposed complex-BEMD can be applied for color image processing. A simple color image fusion algorithm based upon the proposed complex-BEMD has also been developed to have the exhibition of the potential. By our proposed complex-BEMD and image fusion algorithm, the well-fused results can be obtained, if the mode mixing in BEMD is alleviated. © 2011 Elsevier B.V. All Rights Reserved.

Chang S.H.,National Ilan University
Materials Chemistry and Physics | Year: 2011

Cu-XAl-4Ni shape memory alloys (SMAs) are capable of martensitic transformation across a wide temperature range through the precise adjustment of their chemical composition from X = 13.0 to 14.5. In addition, the variations in chemical composition significantly influence the internal friction characteristics of Cu-XAl-4Ni SMAs. Cu-XAl-4Ni SMAs with a higher content of Al exhibit lower internal friction peaks due to decreases in the amount of transformed martensite and the formation of γ2 phase precipitates. The damping capacity of the inherent and intrinsic internal friction for Cu-13.5Al-4Ni SMA is extremely low due to the fact that the transformed β′1(18R) martensite has only an ordered 9R structure with stacking faults. The Cu-14.0Al-4Ni SMA exhibits a relative increase in the inherent and intrinsic damping capacity because the transformed γ′1(2H) martensite exhibits twinning with abundant moveable twin boundaries. © 2010 Elsevier B.V. All rights reserved.

Lee H.-Y.,National Ilan University
Journal of Computing in Civil Engineering | Year: 2012

A good layout of the service facilities in a station can reduce the total walking distance of passengers to and from various facilities. It improves the overall service efficiency and quality of the station. Over time the original layout of a station may become unsuitable. This is often due to the changes in the number of passengers, the types of passengers, and the surrounding environment. In such cases, a comprehensive review of the layout should be conducted. However, the layouts possible are numerous and should be investigated using quantitative evaluation. This paper proposes an integrated model that estimates the total walking time of a passenger by simulation and searches for a near-optimal layout by ant colony optimization. A high-speed railway station is employed as a case study to evaluate the feasibility of the proposed model. The results indicate that the proposed model can effectively save passengers time and improve the service efficiency of the station. © 2012 American Society of Civil Engineers.

Huang H.-C.,National Ilan University
IEEE Transactions on Industrial Informatics | Year: 2013

This paper presents an embedded system-on-a-programmable-chip (SoPC)-based parallel ant colony optimization (ACO) algorithm and its application to optimal motion controller design for intelligent omnidirectional mobile robots. Both polar-space parallel ACO (PACO) parameter tuner and kinematic motion controller are integrated in one field programmable gate arrays chip to efficiently construct an intelligent omnidirectional mobile robot. The optimal parameters of the motion controllers are obtained by minimizing the performance index using the proposed SoPC-based PACO algorithm. These polar-space optimal parameters are then employed in the PACO-based embedded kinematic motion controller to achieve trajectory tracking and stabilization. Experimental results are conducted to show the effectiveness and merit of the proposed PACO algorithm for embedded controllers of omnidirectional mobile robots. These results indicate that the proposed PACO-based embedded optimal controller outperforms the nonoptimal controllers and the conventional genetic algorithm optimal controllers in polar coordinates. © 2005-2012 IEEE.

Huang H.-C.,National Ilan University
Applied Artificial Intelligence | Year: 2013

This article presents an intelligent system-on-a-programmable-chip-based (SoPC) ant colony optimization (ACO) motion controller for embedded omnidirectional mobile robots with three independent driving wheels equally spaced at 120 degrees from one another. Both ACO parameter autotuner and kinematic motion controller are integrated in one field-programmable gate array (FPGA) chip to efficiently construct an experimental mobile robot. The optimal parameters of the motion controller are obtained by minimizing the performance index using the proposed SoPC-based ACO computing method. These optimal parameters are then employed in the ACO-based embedded kinematic controller in order to obtain better performance for omnidirectional mobile robots to achieve trajectory tracking and stabilization. Experimental results are conducted to show the effectiveness and merit of the proposed intelligent ACO-based embedded controller for omnidirectional mobile robots. These results indicate that the proposed ACO-based embedded optimal controller outperforms the nonoptimal controllers and the conventional genetic algorithm (GA) optimal controllers. © 2013 Taylor & Francis Group, LLC.

Disclosed are a Saussurea involucrate extract, pharmaceutical composition and use thereof for anti-fatigue and anti-aging. In the embodiments of the present invention, a low dose of ethyl acetate fraction of Saussurea involucrate (preferably 30 mg/kg) and Rutin (preferably 30 mg/kg) can inhibit MDA expression level and increase GPx activity. Additionally, both decrease the expression of COX-2, PARP and caspase-3, via downregulation of NF-kappaB, resulting in neuroprotection. Further, syringe feeding of Saussurea involucrate extract is also performed in aging mouse model. In the future, Saussurea involucrate extract of the present invention can be used in neuroprotection, particularly in treatment or prevention of cerebral diseases, nerve diseases, neurodegenerative diseases, chronic neurodegenerative diseases, aging, and fatigue, caused by oxidative injury.

Cheng A.,National Ilan University
Materials and Design | Year: 2012

This paper presents an experimental investigation on the effect of incinerator bottom ash (IBA) fineness and the cooled process of molten IBA on fresh mortar properties and compressive strength, shrinkage, alkali-aggregate reaction, and pore size distribution of hardened mortars. IBA with two finenesses, an original IBA, and a pulverizing incinerator bottom ash (PIBA) powder, with maximum particle size of 4.75 and 0.074 mm respectively were used to partially replace sand and Portland cement at 0%, 10%, 20%, 30%, and 40% by weight. The pozzolanic activity characteristics of powder were obtained from melting the above PIBA in an electric-furnace at 1450 °C for 1. h and chilled by quenching in water (WIBA) and air (AIBA). Results indicate that incinerator bottom ash caused a reduction in compressive strength, unit weight, and flowability values when used as a replacement for sand and cement. However, IBA can be processed by melting to regain reactive pozzolanic activity, which may be used to partially replace cement. The incorporation of WIBA and AIBA decreased total capillary pore porosity of the mortars compared to that with ordinary PIBA. The AIBA possesses lower hydraulic properties of WIBA. Improved properties of WIBA and AIBA result from the dense structure achieved by the filling effect of the pozzolanic product. Pozzolanic strength activity index (PSAI) results and scanning electron microscope (SEM) observations confirm these findings. Therefore, WIBA and AIBA can act as either a cementitious material or as an inert filler in cement-based composites. © 2011 Elsevier Ltd.

Lee H.-Y.,National Ilan University
Automation in Construction | Year: 2012

When renovating a building that remains in operation, the closure of some areas is inevitable. If a corridor needs to be closed off, the accessibility of rooms may be affected. To minimize the numbers of rooms that need to be closed, contractors usually construct temporary passageways. Because temporary passageways are narrow, they often have a user impact, including time delay. This impact needs to be quantified and improved through work zone scheduling. This paper proposed an integrated model that calculates the amount of pedestrian time delay through simulation and searches for the near-optimal schedule using ant colony optimization. The model is applied to the scheduling of a floor tile renovation project of a building that remains in operation. The finding indicates that the model reduces the pedestrian time delay to a much greater extent compared to the schedule proposed by human planners based on the location sequence of work zones. © 2011 Elsevier B.V. All rights reserved.

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