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作者： Yuan, Kun Yu, Bei Pan, David Z. Cadence Design Systems San Jose CA 95134 United States Department of Electrical and Computer Engineering University of Texas Austin TX 78731 United States

Electronic beam lithography (EBL) is one of the promising emerging technologies in the sub-22 nm regime. In EBL, the desired circuit patterns are directly shot into the wafer, which overcomes the diffraction limit of light in the current optical lithography system. However, the low throughput becomes its key technical hurdle. In the conventional EBL system, each rectangle in the layout will be projected by one electronic shot through a variable shape beam (VSB). This could be extremely slow. As an improved EBL technology, character projection (CP) shoots complex shapes, so-called characters, in one time, by putting them into a predesigned stencil. However, only a limited number of characters can be employed, due to the area constraint. Those patterns, not contained by any character, are still required to be written by VSB. A key problem is how to select an optimal set of characters and pack them on the CP stencil to minimize total processing time. In this paper, we investigate a problem of electronic beam lithography stencil design with overlapped characters. Different from previous works, besides selecting appropriate characters, their placements on the stencil are also optimized in our framework. Specifically, we propose a Hamilton-path-based iterative algorithm to handle 1-D stencil design problem, and an effective simulated annealing framework for the generalized 2-D case with an efficient look-ahead sequence pair evaluation technique. The experimental results show that, compared to conventional stencil design methodology without overlapped characters, we are able to reduce total projection time by 51%. © 2006 IEEE.

关键词： Simulated annealing

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IBIS modeling using latency insertion method (LIM)

IBIS modeling using latency insertion method (LIM)

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2012 IEEE 16th Workshop on Signal and Power Integrity, SPI 2012

作者： Schutt-Ainé, José E. Tan, Jilin Liu, Ping Al-Hawari, Feras Varma, Ambrish Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign Urbana IL 61820 United States Cadence Design Systems Chelmsford MA 01824 United States

ISBN: (纸本)9781467315043

This paper presents an approach for the transient simulation of I/O buffers described by IBIS models. Using the latency insertion method a formulation can be obtained for the transient behavior of IBIS models and external circuitry. The formulation offers better convergence than traditional Newton-Raphson methods and is therefore more robust. Several computer simulations are performed to validate the method. © 2012 IEEE.

关键词： Newton-Raphson method

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An exponential moving average algorithm

An exponential moving average algorithm

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2012 IEEE Congress on Evolutionary Computation, CEC 2012

作者： Haynes, David Corns, Steven Venayagamoorthy, Ganesh Kumar Systems Design Aclara St. Louis MO United States Engineering Management and Systems Engineering Dept. Missouri University of Science and Technology Rolla MO United States Holcombe Department of Electrical and Computer Engineering Clemson University Clemson SC 29634 United States

ISBN: (纸本)9781467315098

Techniques to reduce the search space when an optimizer seeks an optimal value are studied in this paper. A new mutation technique called the "Exponential Moving Average" algorithm (EMA) is introduced. The performance of EMA algorithms is compared to two other similar Computational Intelligence (CI) algorithms (an ordinary Evolutionary Algorithm (EA) and a "Mean-Variance Optimization" (MVO)) to solve a multi-dimensional problem which has a large search space. The classic Sudoku puzzle is chosen as the problem with a large search space. © 2012 IEEE.

关键词： Evolutionary algorithms

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BT-02FUNCTIONALLY-DEFINED THERAPEUTIC TARGETS IN DIFFUSE INTRINSIC PONTINE GLIOMA

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Neuro-Oncology 2015年第SUPPL_3期17卷 iii3-iii3页

作者： Grasso, Catherine S. Tang, Yujie Truffaux, Nathalene Berlow, Noah E. Liu, Lining Debily, Marie-Anne Quist, Michael J. Davis, Lara Huang, Elaine C. Woo, Pamelyn J. Ponnuswami, Anitha Chen, Spenser Johung, Tessa Sun, Wenchao Kogiso, Mari Du, Yuchen Lin, Qi Huang, Yulun Hutt-Cabezas, Marianne Warren, Katherine E. Le Dret, Ludivine Meltzer, Paul S. Mao, Hua Quezado, Martha van Vuurden, Dannis G. Abraham, Jinu Fouladi, Maryam Svalina, Matthew N. Wang, Nicholas Hawkins, Cynthia Raabe, Eric Hulleman, Esther Spellman, Paul T. Li, Xiao-Nan Keller, Charles Pal, Ranadip Grill, Jacques Monje, Michelle Center for Spatial Systems Biomedicine Department of Molecular and Medical Genetics Oregon Health & Science University Portland OR USA These authors contributed equally to this work Depts. of Neurology Neurosurgery and Pediatrics Stanford University Stanford CA USA Unité Mixte de Recherche du Centre National de la Recherche Scientifique 8203 Institut Gustave Roussy et Université Paris-Sud Villejuif France Electrical and Computer Engineering Texas Tech University Lubbock TX USA Université d'Evry-Val d'Essone Evry France Pediatric Cancer Biology Program Papé Family Pediatric Research Institute Dept. of Pediatrics Oregon Health & Science University Portland OR USA Children's Cancer Therapy Development Institute Fort Collins CO USA Laboratory of Molecular Neurooncology Texas Children's Cancer Center Baylor College of Medicine Houston TX USA Department of Neurosurgery The First Affiliated Hospital of Soochow Suzhou China Departments of Oncology and Pathology Johns Hopkins University Baltimore MD USA National Cancer Institute Bethesda MD USA Department of Pediatric Oncology Hematology and Neuro-Oncology Research Group Cancer Center Amsterdam VU University Medical Center Amsterdam The Netherlands Cancer and Blood Diseases Institute Cincinnati Children's Hospital Medical Center Cincinnati OH USA Dept. of Paediatric Laboratory Medicine University of Toronto Scientist Labatt Brain Tumour Research Centre Hospital for Sick Children University of Toronto Toronto ON Canada Departement de Cancerologie de l'Enfant et de l'Adolescent Institut Gustave Roussy Université Paris-Sud Villejuif France

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Performance of a Multimode LTE/WiMAX Transceiver including the Nonlinear Interference Suppressor

Performance of a Multimode LTE/WiMAX Transceiver including t...

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IEEE Aerospace Conference

作者： Martha Suarez Olga Zlydareva Hooman Habibi Pooh Ling, E. Department of Integrated Circuits and Systems Instytut Technologii Elektronowej Al. Lotnikow 32/42 02-668 Warsaw Poland School of Computer Science and Informatics University College Dublin Belfield Dublin Ireland Electrical Engineering Department Eindhoven University of Technology Den Dolec 2 5612 AZ Eindhoven Netherlands Catena Radio Design bv Science Park Eindhoven Ekkersrijt 6040 5692 GA Son en Breugel The Netherlands

ISBN: (纸本)9781467318129

This paper deals with the implementation of a Nonlinear Interference Suppressor (NIS) into a wireless LTE transceiver. This within the context of high energy efficient multi-standard transceivers controlled by a cognitive radio platform. In multimode transceivers, the transmitter for one communication standard may induce a large interferer in the receiver for another standard. To linearly suppress this interferer, which can be several orders of magnitude larger than the desired received signal, the receiver should have a very large linear dynamic range, resulting in excessive power consumption. For this reason, we consider the NIS, a closed-loop tuning method that exploits the locally available interference as side information. The wireless LTE transceiver model, includes all the baseband signal treatment blocks and the RF front-end of a low IF direct conversion receiver architecture. A mobile WiMAX signal is considered as the interference signal at the receiver. The obtained symbol error rate (SER) is observed for different system configurations. Matlab simulation results in this practical scenario show that the NIS can strongly suppress the interferer while a symbol error rate performance close to that of an exactly linear receiver is achieved. This results permit to identify perspective directions for the better multi-standard and high energy efficient transceivers implementation.

关键词： NIS LTE Nonlinear Interference Suppressor SLC5A5 gene Local thermodynamic equilibrium Transceivers Long Term Evolution interfering signal linear dynamic range bit error rate performance Power consumption Receivers suppressors interference interference front-ends

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Motion Stereo-based Collision Avoidance for an Intelligent Smart Car Door System

Motion Stereo-based Collision Avoidance for an Intelligent S...

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International IEEE Conference on Intelligent Transportation systems

作者： Christian Scharfenberger Samarjit Chakraborty John Zelek David Clausi Faculty of Systems Design Engineering University of Waterloo Institute of Real-Time Computer Systems Electrical Engineering TU Munich

ISBN: (纸本)9781467330640

Driver assistance systems in today's cars assist drivers when the car is in motion. However, there is relatively less, to almost no work on assistance systems when the car is stationary. This paper focuses on such a system, and describes the design and realization of a collision avoidance system for a novel car door assistance system, the smart car door. An omnidirectional camera is attached to each side-view mirror of a car, and the fold-in fold-out movement of the mirror is used to generate 3D information about static obstacles next to the car based on a motion stereo approach. The car door controller uses the sensor data to compute collision-free door opening paths, and the two-hinge kinematic system of the smart car door enables to move the door around static obstacles. The latter increases the door entrance area in tight parking lots, which drastically improves the ingress/egress to/from a vehicle. These are enhancements to currently available systems that only indicate the presence of obstacles next to the car. Experiments on a fully realized prototype demonstrated a robust generation of 3D information about obstacles next to the car. A study with 20 test users showed that our system strongly supports the users to avoid collisions when operating the door.

关键词： Cameras Mirrors Vehicles Feature extraction Noise Monitoring Prototypes

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Anti-Trap Protection for an Intelligent Smart Car Door System

Anti-Trap Protection for an Intelligent Smart Car Door Syste...

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International IEEE Conference on Intelligent Transportation systems

ISBN: (纸本)9781467330640

A majority of driver assistance systems focuses on assisting the driver when the car is in motion. There is relatively less, to almost no work on assistance systems when the car is stationary. The focus of this paper is on such a system and describes the design and realization of a novel, camera-based anti-trap protection system for smart car doors. Our system uses a single omnidirectional camera that is integrated in each inner door of a vehicle, and detects obstacles such as fingers, hands or legs at the A and B-pillar, door sill and car door without any contact. This is an enhancement to currently available systems that require an active contact between obstacles and sensors in the door area for the detection of trapping. The paper also proposes a scheme for re-calibrating the camera position that may change due to vibrations during the life-time of the car door. Experiments on a fully realized car door prototype show that the proposed schemes prevent trapping by robustly detecting obstacles such as small fingers or hands in critical door regions, and output results in real-time. The latter is important when door users slam the car door. A first study with 20 test users showed that our system strongly supports the door users to prevent trapping.

关键词： VEHICLE DOOR Cars DOOR Driver Assistance systems trapping Fingers

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A CMOS wideband mixer for Direct-Conversion Receivers (DCRs)

A CMOS wideband mixer for Direct-Conversion Receivers (DCRs)

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2012 8th International Caribbean Conference on Devices, Circuits and systems, ICCDCS 2012

作者： Ximenes, Augusto R. Swart, Jacobus W. Design House CTI Hardware Systems Design Division - DCSH Center for Information Technology Renato Archer Campinas - CEP 13069-901 Brazil School of Electrical and Computer Engineering State University of Campinas - UNICAMP Campinas - CEP 13083-852 Brazil

ISBN: (纸本)9781457711169

This paper presents the design and analysis of a Mixer in 0.13-μm RFCMOS process for Direct-Conversion Receivers (DCRs), with RF input frequency ranging from 50 MHz up to 6.5 GHz. This circuit has been designed to provide an intermediate input impedance, being suitable for either direct antenna connection or integrated with a LNA. This mixer attends the necessary requirements of a cognitive radio (CR), including wideband operation along with good linearity. It is based on a Gilbert-cell using the current bleeding technique with two series resonating inductors. It has a measured conversion gain of 16 dB, a measured input third-order intercept point of -1 dBm, a simulated noise figure of 8.5 dB at 1 MHz, while consuming only 4.5 mW of dc power. © 2012 IEEE.

关键词： Cognitive radio

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Wireless Network Aware Cloud Scheduler for Scalable Cloud Mobile Gaming

Wireless Network Aware Cloud Scheduler for Scalable Cloud Mo...

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IEEE International Conference on Communications

作者： Shaoxuan Wang Yao Liu Sujit Dey Mobile Systems Design Lab Dept. of Electrical and Computer Engineering University of California

ISBN: (纸本)9781457720529

Cloud Mobile Gaming (CMG) [1][10][11] has been proposed as an approach to enable rich Internet games on mobile devices, where the rendering of the games is performed on cloud servers, as opposed to on mobile devices. Though promising, the CMG approach may require significant cloud computing resources for the concurrent gaming sessions, and even more critically, significant bandwidth for delivering the rendered videos back to mobile devices, leading to high cloud costs, and questions regarding resource constrained wireless networks. This paper addresses the problem of making the CMG approach scalable and economically feasible by proposing a novel Wireless Cloud Scheduler (WCS), which can increase the number of simultaneous CMG sessions that can be supported while ensuring Mobile Gaming User Experience (MGUE)[1] with the available wireless network resources, while minimizing the cloud service cost incurred by the CMG provider. Unlike conventional network schedulers, WCS considers simultaneously the constraints of the wireless networks that may be available to each CMG user, including cellular and WiFi, as well as the cost of available cloud resources, while scheduling the most optimal wireless link and cloud server for each CMG session. To further enhance the performance of WCS, we also propose a joint scheduling-adaptation algorithm, that can systematically leverage adaptation techniques introduced in [10][11] to adapt the communication needs of in-service users if the available wireless network bandwidth is not sufficient for a new CMG user. Our simulation results demonstrate that the use of WCS, and the joint scheduling-adaptation algorithm, can significantly improve the performance of the CMG approach, increasing the number of simultaneous CMG sessions that can be supported, while maximizing aggregate MGUE and minimizing the average cloud service cost.

关键词： Wireless networks CLOUDS Clouds Mobile devices Toilets Scalability Game theory Rendering scheduler program Radio links Wi-Fi Mobile

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A main control room simulation facility for npp human performance, human machine interface research

A main control room simulation facility for npp human perfor...

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8th International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies 2012: Enabling the Future of Nuclear Energy, NPIC and HMIT 2012

作者： Elks, Carl Guerlain, Stephanie Lau, Nathan Johnson, Barry Bailey, Bob Macbeth, Abbe Boire, Robert Zakaib, Greg Departments of Electrical and Computer Engineering University of Virginia Charlottesville VA 22903 United States Systems Engineering University of Virginia Charlottesville VA 22903 United States Center for Advanced Engineering Research Bedford VA United States Noldus Technology United States L-3 Communication MAPPS Inc. United States

ISBN: (纸本)9781627480154

Current digital I&C and Main Control Room technology has extended the capability of integrating information from numerous plant systems and transmitting needed information to operations personnel in a timely manner that could not be envisioned when previous generation plants were designed and built. At present, numerous versions and different types of the new advanced control rooms are in the regulatory licensing application process. To assist with understanding the requirements and implications of these new technologies on display and control designs, the U.S. Nuclear Regulatory Commission (NRC) along with nuclear industry has been proactive in conducting research to provide informed guidance on human performance issues related to safe operations, potential mitigation for failures of subsets of the automation, and how to take advantage of the digital technology while adhering to rigorous safety requirements. In order to support these human machine interface challenges in all digital control rooms, the University of Virginia and the Center for Advanced engineering Research (CAER) in Bedford, VA has designed, developed and realized a research facility to include a configurable main control room, approximately 2,500 square feet, specifically to support human factors, digital I&C, and cyber security research for nuclear power generation. This paper describes the newly created reconfigurable main control room at the CAER facility, the capabilities of the facility, and the types of research that can be supported at the facility.

关键词： Nuclear industry

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