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IEEE International Conference on Nano/Micro Engineered and Molecular systems (NEMS)

作者： Jason Clendenin Jin-Woo Kim Steve Tung Microelectronics and Photonics Graduate Program University of Arkansas Fayetteville AR USA Member IEEE Department of Biological and Agricultural Engineering The University of Arkansas Fayetteville AR USA. Microelectronics and Photonics Graduate Program The University of Arkansas Fayetteville AR USA. jwkim@uark.edu Member IEEE Department of Mechanical Engineering The University of Arkansas Fayetteville AR USA. Microelectronics and Photonics Graduate Program The University of Arkansas Fayetteville AR USA.

This paper reports the design and fabrication of a biosensor based on aligned single wall carbon nanotubes (SWCNTs) with integrated single-strand DNAs (ssDNA). This ultra-sensitive biosensor provides label-free real-time electronic detection of DNA hybridization between surface-immobilized ssDNA and target ssDNA. Hybridization kinetics between complementary and target ssDNA nucleotide base pairs result in a local charge generation between base pairs that is injected into the SWCNTs resulting in a detectable change in SWCNT electrical conductance. This conductance change is amplified electrically through the integration of the functionalized SWCNTs as the semi-conductive channel in a silicon-silicon oxide based field effect transistor (FET). Based on previous Langmuir DNA kinetics calculations, the projected sensitivity level of the SWCNT-DNA sensor is considerably higher than traditional fluorescent and hybridization assays.

关键词： Carbon nanotubes Biosensors DNA FETs USA Councils Kinetic theory Hybrid power systems Agricultural engineering Fluorescence Probes

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DNA-Directed Self-Assembly of Microscopic 1-D Carbon Nanotube Wire

DNA-Directed Self-Assembly of Microscopic 1-D Carbon Nanotub...

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IEEE International Conference on Nano/Micro Engineered and Molecular systems (NEMS)

作者： Jin-Woo Kim Nalinikanth Kotagiri Russell Deaton Steve Tung Cell and Molecular Biology Graduate Program University of Arkansas Fayetteville AR USA IEEE Senior Member Cell and Molecular Biology Graduate Program University of Arkansas Fayetteville AR 72701 USA. Department of Computer Science and Computer Engineering University of Arkansas Fayetteville AR 72701 USA. Department of Mechanical Engineering University of Arkansas Fayetteville AR USA

Molecular wire construction using DNA-directed self-assembly of multi-walled carbon nanotubes (MWNTs) has been attempted. MWNTs were selected owing to their exceptional electrical and structural properties. DNA, which possesses specific molecular recognition properties, served as the engine for the assembly. Non-crosshybridizing (NCH) sequences were designed to impart specificity and high throughput reaction. Stepwise manufacturing of the wire was accomplished by first functionalizing the NCH 20 base pair single-stranded sequences to the tips of MWNT using amide linkage. The adducts were then utilized to self-assemble 1D nanotube wire through DNA hybridization reactions between two complementary ssDNAs functionalized to the MWNT tips. TEM, epi-fluorescent microscopy and AFM analyses showed successful assemblies of micrometer-scale 1D MWNT-DNA wires, ranging from 2.7-20 mum. The results demonstrate great potentials of the DNA-guided self-assembly process, which would provide an uncomplicated, versatile and inexpensive way to manufacture micrometer-scale molecular wires.

关键词： Self-assembly Carbon nanotubes Wire Atomic force microscopy Transmission electron microscopy DNA Assembly Sequences Engines Throughput

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Optimal Control of Assembly systems with Multiple Stages and Multiple Demand Classes

Optimal Control of Assembly Systems with Multiple Stages and...

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2007 International Conference on Manufacturing & Service Operations Management

作者： Saif Benjaafar Mohsen ElHafsi Chung-Yee Lee Industrial & Systems Engineering Department of Mechanical Engineering University of Minnesota Minneapolis MN 55455 The A.Gary Anderson Graduate School of Management University of California Riverside CA 92521-0203 Department of Industrial Engineering and Logistics Management Hong Kong University of Science & Technology Clear Water Bay Kowloon Hong Kong

We consider an assembly system with multiple stages,multiple items,and multiple customer *** system consists of m production facilities,each producing a different *** are produced one unit at a *** produce one unit of an item,one unit from each of its predecessor items is *** production completion,items are placed in *** each decision epoch,we must determine whether or not to produce an item and should demand from a particular class arise whether or not to satisfy it from existing inventory,if any is ***,at each epoch,we must make decisions about both production and inventory *** doing so,we must balance inventory holding costs against shortage costs(lost sales or backorders).We formulate the problem as a Markov decision process and use it to characterize the structure of the optimal *** production,we show that the optimal policy for each item is a state-dependent base-stock policy with the base-stock level non-increasing in the inventory level of items that are downstream and non-decreasing in the inventory level of all other *** inventory allocation,we show that the optimal policy is a multi-level state-dependent rationing policy with the rationing level for each demand class non-increasing in the inventory level of all non-end items. We describe several additional properties for both the production and inventory allocation *** numerical results,we compare the performance of the optimal policy against a heuristic policy that controls production and inventory allocation using fixed base-stock and rationing *** find that such a policy is effective in systems with lost sales but can perform poorly in systems with backorders.

关键词： assembly systems production & inventory control multi-echelon inventory systems Markov decision processes make-to-stock queues

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Measurement of Temperature Differences between Micro-regions in Water Using Near-Infrared Spectroscopy

Measurement of Temperature Differences between Micro-regions...

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29th Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBS 2007), vol.11

作者： Naoto Kakuta Atsushi Ozaki Fuguo Li Hidenobu Arimoto Yukio Yamada Faculty of Engineering Kyushu University Fukuoka Japan Graduate School of Systems Life Sciences Kyushu University Fukuoka Japan Department of Mechanical Engineering and Intelligent Systems University of Electro-Communications Tokyo Japan National Institute of Advanced Industrial Science and Technology Photonic Research Institute Tsukuba Japan

We have developed a method for measuring the temperature of micro-regions in aqueous solutions using near-infrared spectroscopy that enables us to measure the temperature of biological cells, tissues, and biochemical solutions in vitro. The measurement principle is based on the fact that the peak wavelength of the water absorption band with its center near 1450nm shifts with changes in temperature. The measurement system, which consists of a biological microscope and two spectrophotometers, can measure respective absorbance spectra for two areas that are each 80μm in diameter. We formed the temperature distribution in a 500-μm thick water film by heating an immersed Nichrome wire and measured the temperature difference between the two areas. The results of the measurement were compared to a calculated temperature distribution.

关键词： Temperature measurement Spectroscopy Wavelength measurement Area measurement Temperature distribution Water heating Biological cells Biological tissues In vitro Absorption

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International Journal of Manufacturing Technology and Management: Editorial

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International Journal of Manufacturing Technology and Management 2007年第3-4期11卷 275-277页

作者： Fang, Liping Xi, Fengfeng Zolfaghari, Saeed Department of Mechanical and Industrial Engineering Ryerson University 350 Victoria Street Toronto Ont. M5B 2K3 Canada Department of Aerospace Engineering Ryerson University 350 Victoria Street Toronto Ont. M5B 2K3 Canada Department of Mechanical and Industrial Engineering Ryerson University Toronto Ont. Canada Department of Systems Design Engineering University of Waterloo Canada International Journal of Industrial and Systems Engineering Canada Canada Canada Canada Canada Department of Aerospace Engineering Ryerson University Toronto Ont. Canada International Journal of Manufacturing Research Canada Recent Patents on Engineering Canada Society of Manufacturing Engineers Canada Industrial Engineering Program Ryerson University Toronto Ont. Canada Department of Mechanical Engineering University of Ottawa Canada Canada

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Enabling a strong U.S. engineering workforce for technological innovation: A national partnership in graduate professional education with industry to enhance U.S. competitiveness and economic development

Enabling a strong U.S. engineering workforce for technologic...

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114th Annual ASEE Conference and Exposition, 2007

作者： Keating, Donald Stanford, Thomas Bardo, John Dunlap, Duane DeLoatch, Eugene Tricamo, Stephen Deoew, Dennis Bertoline, Gary Schuver, Mark McHenry, Albert Lindquist, Timothy Tidwell, Joseph Palmer, Harvey Smith, Mark Morrison, Raymond Egbert, Norm Quick, David Olson, Roger Truesdale, Samuel Noori, Mohamad Sullivan, Edward Rencis, Joseph Purdy, Carla University of South Carolina United States Department of Mechanical Engineering University of South Carolina United States ASEE-Graduate Studies Division Department of Chemical Engineering University of South Carolina United States Western Carolina University United States Kimmel School Western Carolina University United States Morgan State University United States School of Engineering Morgan State University United States ASEE New Jersey Institute of Technology United States Department of Industrial and Manufacturing Engineering Purdue University United States College of Technology Purdue University United States Rolls-Royce-Purdue Master's Degree Program Purdue University United States Arizona State University United States Arizona State University Polytechnic United States Boeing Co. United States JACMET Arizona State University Polytechnic United States ASEE-College Industry Partnership Division Rochester Institute of Technology United States Kate Gleason College of Engineering Rochester Institute of Technology United States Lockheed Martin Aeronautics Co. United States Engineering Integration and Strategy Lockheed Martin Aeronautics Company United States ASEE-Corporate Rolls-Royce Corporation United States Rolls-Royce North American Technologies United States California State Polytechnic University United States College of Engineering California State Polytechnic University United States Graduate Programs and Research College of Engineering California State Polytechnic University United States University of Arkansas United States Department of Mechanical Engineering University of Arkansas Fayetteville United States ASEE-Mechanical Engineering Division ASME Mechanical Engineering Department University of Cincinnati United States Department of Electrical and Computer Engineering University of Cincinnati United States

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Contribution of engineering management and systems engineering concepts to engineering design

Contribution of engineering management and systems engineeri...

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114th Annual ASEE Conference and Exposition, 2007

作者： Sireli, Yesim Conrad, James Kane, Martin Skinner, Frank University of North Carolina Charlotte United States Engineering Management Program University of North Carolina Charlotte United States ASEE IEEE Engineering Management Society Decision Sciences Institute United States ASEM Korea Republic of Marketing Science Institute United States Honor Society of Phi Kappa Phi United States IEEE Eta Kappa Nu United States Project Management Institute United States IEEE Computer Society Department of Civil and Environmental Engineering University of North-Carolina Charlotte United States Eno ASCE ITE Sigma Xi United States Chi Epsilon Industrial Solutions Department of Mechanical Engineering and Engineering Science University of North Carolina Charlotte United States Robo-Tech. Systems Inc. GE Advanced Products Corp.

No abstract available

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Combining of chaotic differential evolution and quadratic programming for economic dispatch optimization with valve-point effect (vol 21, pg 989, 2006)

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IEEE TRANSACTIONS ON POWER systems 2006年第3期21卷 1465-1465页

作者： dos Santos Coelho, Leandro Cocco Mariani, Viviana Production and Systems Engineering Graduate Program Automation and Systems Laboratory PUCPRJCCET/PPGEPSILAS Pontifical Catholic University of Paraná 802 15-901 Curitiba Paraná Brazil Mechanical Engineering Graduate Program PUCPRJCCETIPPGEM Pontifical Catholic University of Paraná 802 15-901 Curitiba Paraná Brazil

Evolutionary algorithms are heuristic methods that have yielded promising results for solving nonlinear, nondifferentiable, and multi-modal optimization problems in the power systems area. The differential evolution (DE) algorithm is an evolutionary algorithm that uses a rather greedy and less stochastic approach to problem solving than do classical evolutionary algorithms, such as genetic algorithms, evolutionary programming, and evolution strategies. DE also incorporates an efficient way of self-adapting mutation using small populations. The potentialities of DE are its simple structure, easy use, convergence property, quality of solution, and robustness. This paper proposes a new approach for solving economic load dispatch problems with valve-point effect. The proposed method combines the DE algorithm with the generator of chaos sequences and sequential quadratic programming (SQP) technique to optimize the performance of economic dispatch problems. The DE with chaos sequences is the global optimizer, and the SQP is used to fine-tune the DE run in a sequential manner. The combined methodology and its variants are validated for two test systems consisting of 13 and 40 thermal units whose incremental fuel cost function takes into account the valve-point loading effects. The proposed combined method outperforms other state-of-the-art algorithms in solving load dispatch problems with the valve-point effect. [ABSTRACT FROM AUTHOR]

关键词： Chaotic sequences differential evolution (DE) economic dispatch evolutionary algorithms optimization power generation valve-point effect

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Experimental verifications on control and sensing of bucky gel actuator/sensor

Experimental verifications on control and sensing of bucky g...

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2007 IEEE/RSJ International Conference on Intelligent Robots and systems

作者： Norihiro Kamamichi Masaki Yamakita Kinji Asaka Zhi-Wei Luo Toshiharu Mukai Bio-mimetic Control Research Center (BMC) The Institute of Physical and Chemical Research (RIKEN) Nagoya Japan Department of Robots and Mechatronics School of Future Science Tokyo Denki University Tokyo Japan BMC RIKEN Japan Department of Mechanical and Control Engineering Graduate School of Science Tokyo Institute of Technology Tokyo Japan BMC RIKEN Research Institute for Cell Engineering National Institute of Advanced Industrial Science and Technology (AIST) Odaka Japan Department of Computer and Systems Engineering Kobe University Kobe Japan

Bucky gel actuator is a novel electro-active polymer (EAP), which is a low-voltage driven dry soft actuator. Its device has a bimorph structure with polymer-supported bucky gel electrodes and a polymer-supported ionic gel electrolyte. It can be fabricated by layer-by-layer casting, to form any shape easily. In addition, the bucky gel device generates electromotive force when bending, and then it also can be used as a sensor. Since sensor and actuator functions exist in a same device, flexible and miniature integrated actuator-sensor systems for soft robotics can be constructed easily. In this study, we conduct some experiments to verify the possibility of the bucky gel actuator/sensor. Feedback controls of the actuator are demonstrated and the characteristics of the sensor are investigated. By utilizing both functions of the actuator and the sensor, feedback control based on the sensor signal is demonstrated.

关键词： Actuators Sensor phenomena and characterization Polymer gels Feedback control Electrodes Casting Shape Force sensors Sensor systems Robot sensing systems

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Chaotic differential evolution applied to electromagnetics optimization

Chaotic differential evolution applied to electromagnetics o...

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12th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2006

作者： Dos Santos Coelho, Leandro Mariani, Viviana Cocco Production and Systems Engineering Graduate Program Automation and Systems Laboratory Pontifical Catholic University of Paraná Imaculada Conceicao 1155 80215-901 Curitiba Brazil Pontifical Catholic University of Paraná Mechanical Engineering Graduate Program PUCPR/PPGEM Imaculada Conceicao 1155 80215-901 Curitiba Brazil

ISBN: (纸本)1424403200

This work presents a new global optimization algorithm based on differential evolution (DE) method and DE combined with chaotic sequences (DEC) given by logistic map. In this paper, the optimal shape design of Loney's solenoids benchmark problem is carried out by DE and DEC algorithms. The results of DE and DEC approaches are also investigated and their performance compared with those reported in the literature. © 2006 IEEE.

关键词： Chaos theory

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