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Articles 13441 - 13470 of 33681
Full-Text Articles in Entire DC Network
Note: Autonomous Pulsed Power Generator Based On Transverse Shock Wave Depolarization Of Ferroelectric Ceramics, S. I. Shkuratov, Jason Baird, E. F. Talantsev
Note: Autonomous Pulsed Power Generator Based On Transverse Shock Wave Depolarization Of Ferroelectric Ceramics, S. I. Shkuratov, Jason Baird, E. F. Talantsev
Mining Engineering Faculty Research & Creative Works
Autonomous pulsed generators utilizing transverse shock wave depolarization (shock front propagates across the polarization vector P0) of Pb(Zr0.52Ti0.48)O3 poled piezoelectric ceramics were designed, constructed, and experimentally tested. It was demonstrated that generators having total volume of 50 cm3 were capable of producing the output voltage pulses with amplitude up to 43 kV with pulse duration 4 µs. A comparison of high-voltage operation of transverse and longitudinal shock wave ferroelectric generators is given.
The Missouri Miner, December 2, 2010
The Missouri Miner, December 2, 2010
The Missouri Miner Newspaper
No abstract provided.
Feedback Control Of A Bioinspired Plate-Beam System, Cody W. Ray, Belinda A. Batten, John R. Singler
Feedback Control Of A Bioinspired Plate-Beam System, Cody W. Ray, Belinda A. Batten, John R. Singler
Mathematics and Statistics Faculty Research & Creative Works
In this paper we present a model for a plate-beam system to represent a bioinspired flexible wing. Using a Galerkin based finite element approximation to the system, we compute functional gains that can be used for sensor placement and show that a piezoceramic actuator on the beam can be used for camber control
Prediction Of Copper Grade At Flotation Column Concentrate Using Artificial Neural Network, F. Nakhaei, A. Sam, M. R. Mosavi, S. Zeidabadi
Prediction Of Copper Grade At Flotation Column Concentrate Using Artificial Neural Network, F. Nakhaei, A. Sam, M. R. Mosavi, S. Zeidabadi
Mining Engineering Faculty Research & Creative Works
The flotation column is a multivariable process whose main control objective is to guarantee the metallurgical yield set for the process operation, expressed by the grade and the recovery of the valuable mineral in the concentrate. The on-line estimation of grade usually requires a significant amount of work in maintenance and calibration of on-stream analyzers, in order to maintain good accuracy and high availability. These difficulties and the high cost of investment and maintenance of these devices have encouraged the approach of prediction of metal grade as an index of control performance. Therefore, advanced new methods such as Artificial Neural …
Robust Neural Network Rise Observer Based Fault Diagnostics And Prediction, James W. Fonda, S. (Sarangapani) Jagannathan, Steve Eugene Watkins
Robust Neural Network Rise Observer Based Fault Diagnostics And Prediction, James W. Fonda, S. (Sarangapani) Jagannathan, Steve Eugene Watkins
Electrical and Computer Engineering Faculty Research & Creative Works
A novel fault diagnostics and prediction scheme in continuous time is introduced for a class of nonlinear systems. The proposed method uses a novel neural network (NN) based robust integral sign of the error (RISE) observer, or estimator, allowing for semi-global asymptotic stability in the presence of NN approximation errors, disturbances and unmodeled dynamics. This is in comparison to typical results presented in the literature that show only boundedness in the presence of uncertainties. The output of the observer/estimator is compared with that of the nonlinear system and a residual is used for declaring the presence of a fault when …
A Mean-Variance Optimization Algorithm, Istvan Erlich, Ganesh K. Venayagamoorthy, Nakawiro Worawat
A Mean-Variance Optimization Algorithm, Istvan Erlich, Ganesh K. Venayagamoorthy, Nakawiro Worawat
Electrical and Computer Engineering Faculty Research & Creative Works
A new stochastic optimization algorithm referred to by the authors as the 'Mean-Variance Optimization' (MVO) algorithm is presented in this paper. MVO falls into the category of the so-called "population-Based stochastic optimization technique." the uniqueness of the MVO algorithm is based on the strategic transformation used for mutating the offspring based on mean-variance of the n-best dynamic population. the mapping function used transforms the uniformly distributed random variation into a new one characterized by the variance and mean of the n-best population attained so far. the searching space within the algorithm is restricted to the range - zero to one …
Applying Feature Selective Validation (Fsv) As An Objective Function For Data Optimization, Siming Pan, Hanfeng Wang, Jun Fan
Applying Feature Selective Validation (Fsv) As An Objective Function For Data Optimization, Siming Pan, Hanfeng Wang, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
Feature Select Validation (FSV) is a widely used validation method for data comparison. FSV provides a quantitative standard to describe the similarity between two sets of data. in this paper, the application of the FSV technique is extended to data optimization. the raw data obtained from simulations or measurements are often non-ideal for further processing. Several techniques, such as data perturbation, can be used to improve the data quality in certain aspects. However, after modifications the new data could be very different to the original one. using FSV as an objective function for the optimization process is discussed in this …
Hybrid Method Used To Model Via Transitions, Hanfeng Wang, Albert E. Ruehli, Jun Fan
Hybrid Method Used To Model Via Transitions, Hanfeng Wang, Albert E. Ruehli, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
A hybrid approach to solve via impedance and model via transitions is presented in the paper. the method is a combination of via-plane capacitance extraction and the impedance matrices calculation of parallel plane pair. a new formulation of the integral equation method for axially symmetric geometry is used for the capacitance extraction. the method is validated with other model results. ©2010 IEEE.
Efficient Mid-Frequency Plane Inductance Computation, Fan Zhou, Albert E. Ruehli, Jun Fan
Efficient Mid-Frequency Plane Inductance Computation, Fan Zhou, Albert E. Ruehli, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
In power distribution networks (PDN), the modelling of the mid-frequency inductance for Zpp type plane pairs is very important. It is a key step for the placement of the decoupling capacitors. This paper gives an efficient approach for the calculation of the inductance for different capacitor placements. the PEEC based formulations takes advantage of the opposite currents in the planes. This leads to compute time reductions and memory savings for both the element calculation and the matrix solve step. We also use a formulation where placement of capacitors leads to only small changes in the circuit matrix. Comparisons with other …
A Novel Impedance Definition Of A Parallel Plate Pair For An Intrinsic Via Circuit Model, Yaojiang Zhang, Gang Feng, Jun Fan
A Novel Impedance Definition Of A Parallel Plate Pair For An Intrinsic Via Circuit Model, Yaojiang Zhang, Gang Feng, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
Rigorous analysis of via-plate-pair interactions requires the impedance of a plate pair to be defined in terms of radial transmission lines on perfect magnetic conductor (PMC) ports. the plate domain is not a solid plate pair but one with multiple PMC holes where conventional impedance definitions are not suitable. a new impedance definition is proposed where port voltages and currents are expressed in terms of the inward and outward zero-order modes of a radial transmission line. Radial scattering parameters among multiple radial ports are then introduced and the transforms between the radial scattering and impedance matrices are given. an analytical …
Analyzing Via Impedance Variations With A Stochastic Collation Method, Jianxiang Shen, Hanfeng Wang, Ji Chen, Jun Fan
Analyzing Via Impedance Variations With A Stochastic Collation Method, Jianxiang Shen, Hanfeng Wang, Ji Chen, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
In this paper, we describe a systematic approach to optimize and analyze the equivalent characteristic impedance of practical via structures. the procedure consists of (a) optimizing via structures for impedance matching using a Genetic algorithm, and (b) numerically characterize, by stochastic collocation method, the sensitivity of the equivalent characteristic impedance to the manufacturing uncertainties in the various geometrical parameters of a via structure. Such procedure naturally leads to a rigorous methodology for EM design/control in the presence of multiple sources of uncertainty. ©2010 IEEE.
Equivalent Transmission-Line Model For Vias Connected To Striplines In Multilayer Print Circuit Boards, Siming Pan, Jianmin Zhang, Qinghua B. Chen, Jun Fan
Equivalent Transmission-Line Model For Vias Connected To Striplines In Multilayer Print Circuit Boards, Siming Pan, Jianmin Zhang, Qinghua B. Chen, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
Vias are typical discontinuities for high-speed signal transmission in printed circuit boards. Previous work has studied the through-hole via connections from the top layer to the bottom between microstrip traces and proposed an equivalent transmission-line model for impedance matching between traces and vias. in this paper, the equivalent transmission-line model is extended for the via structures connected to strip lines based on modal decomposition. Both single-ended and differential cases are discussed, and the effects of the model parameters on the performance of signal transition are also investigated. the extended equivalent transmission-line model is accurate and fast to be embedded in …
Enhanced Mimo Lmmse Turbo Equalization, Jun Tao, Jingxian Wu, Yahong Rosa Zheng, Chengshan Xiao
Enhanced Mimo Lmmse Turbo Equalization, Jun Tao, Jingxian Wu, Yahong Rosa Zheng, Chengshan Xiao
Electrical and Computer Engineering Faculty Research & Creative Works
We propose an enhanced linear minimum mean square error (LMMSE) turbo equalization scheme for multiple-input multiple-output (MIMO) communication systems. the turbo equalizer employs soft interference cancelation (SIC), where tentative soft decisions of the interfering symbols are subtracted from the received samples before the LMMSE filtering. the enhanced LMMSE turbo equalization with SIC introduces two improvements over existing methods. First, unlike existing methods that completely rely on the a priori soft decisions at the equalizer input for SIC, the new scheme performs SIC by continuously updating the soft decisions with the a posteriori information of the symbols that have just been …
Bi-Material Attachment Through A Soft Tissue Interfacial System, Y. X. Liu, S. Thomopoulos, Victor Birman, J. S. Li, G. M. Genin
Bi-Material Attachment Through A Soft Tissue Interfacial System, Y. X. Liu, S. Thomopoulos, Victor Birman, J. S. Li, G. M. Genin
Mechanical and Aerospace Engineering Faculty Research & Creative Works
No abstract provided.
Review Of Multi-Scale Electromagnetic Modeling, W. C. Chew, Lijun Jiang, H. Y. Chao, A. J. Hesford, M. K. Li, Z. G. Qian, Y. G. Liu, Y. P. Chen, Z. H. Ma, L. E. Sun, M. S. Tong, C. Davis, W. E.I. Sha
Review Of Multi-Scale Electromagnetic Modeling, W. C. Chew, Lijun Jiang, H. Y. Chao, A. J. Hesford, M. K. Li, Z. G. Qian, Y. G. Liu, Y. P. Chen, Z. H. Ma, L. E. Sun, M. S. Tong, C. Davis, W. E.I. Sha
Electrical and Computer Engineering Faculty Research & Creative Works
This paper reviews various methods to solve multiscale problems ranging from low-frequency methods to very high-frequency methods. ©2010 IEEE.
Extracting Physical Ic Models Using Near-Field Scanning, Zhenwei Yu, Jayong Koo, Jason A. Mix, Kevin Slattery, Jun Fan
Extracting Physical Ic Models Using Near-Field Scanning, Zhenwei Yu, Jayong Koo, Jason A. Mix, Kevin Slattery, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
Accurate modeling of chip and chip-package is critical for EMI (Electromagnetic Interference) and RFI (RF Interference) analysis and prediction. in this paper, a model based on an array of dipoles from near-field measurement is proposed. a simple active circuit is simulated in a 3-D full-wave simulation tool, and the dipole model is calculated from the near-field data in the simulation using inverse method with regularization technique. This model has clear physical meaning, and it is validated using field at another place. ©2010 IEEE.
An Equivalent Three-Dipole Model For Ic Radiated Emissions Based On Tem Cell Measurements, Siming Pan, Jingook Kim, Sungnam Kim, Jaesu Park, Heoncheol Oh, Jun Fan
An Equivalent Three-Dipole Model For Ic Radiated Emissions Based On Tem Cell Measurements, Siming Pan, Jingook Kim, Sungnam Kim, Jaesu Park, Heoncheol Oh, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
An equivalent dipole model is proposed in this paper to represent the source of radiated electromagnetic emissions from an integrated circuit (IC). the height of an IC is usually much smaller than its length and width, so only three dipole moments are sufficient to characterize an IC in terms of its electromagnetic emissions. the dipole moments can be extracted from three TEM cell measurements. the radiated fields from the IC can then be calculated based on the extracted dipole sources. This IC emission model with three dipole moments is validated using the far-field measurements in a semi anechoic chamber for …
Decentralized State Feedback And Near Optimal Adaptive Neural Network Control Of Interconnected Nonlinear Discrete-Time Systems, Shahab Mehraeen, Jagannathan Sarangapani, Mariesa Crow
Decentralized State Feedback And Near Optimal Adaptive Neural Network Control Of Interconnected Nonlinear Discrete-Time Systems, Shahab Mehraeen, Jagannathan Sarangapani, Mariesa Crow
Electrical and Computer Engineering Faculty Research & Creative Works
In this paper, first a novel decentralized state feedback stabilization controller is introduced for a class of nonlinear interconnected discrete-time systems in affine form with unknown subsystem dynamics, control gain matrix, and interconnection dynamics by employing neural networks (NNs). Subsequently, the optimal control problem of decentralized nonlinear discrete-time system is considered with unknown internal subsystem and interconnection dynamics while assuming that the control gain matrix is known. For the near optimal controller development, the direct neural dynamic programming technique is utilized to solve the Hamilton-Jacobi-Bellman (HJB) equation forward-in-time. The decentralized optimal controller design for each subsystem utilizes the critic-actor structure …
Improved Target Impedance And Ic Transient Current Measurement For Power Distribution Network Design, Jingook Kim, Songping Wu, Hanfeng Wang, Yuzou Takita, Hayato Takeuchi, Kenji Araki, Gang Feng, Jun Fan
Improved Target Impedance And Ic Transient Current Measurement For Power Distribution Network Design, Jingook Kim, Songping Wu, Hanfeng Wang, Yuzou Takita, Hayato Takeuchi, Kenji Araki, Gang Feng, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
An improved definition of target impedance is proposed in this paper, which is derived from the time-domain waveforms of the IC transient current and the allowable voltage fluctuation. the proposed target impedance removes the unnecessary constraint in the original definition and allows for more cost-effective power distribution network (PDN) designs for consumer electronic products. a measurement procedure to obtain IC transient current waveforms is also developed for the PDN designs utilizing power traces. the proposed target impedance and the measurement procedure have been validated using practical functioning designs. ©2010 IEEE.
Incorporating Correlation Matrices Into Hardware Triply Selective Fading Channel Emulators Using Kronecker Product, Fei Ren, Yahong R. Zheng
Incorporating Correlation Matrices Into Hardware Triply Selective Fading Channel Emulators Using Kronecker Product, Fei Ren, Yahong R. Zheng
Electrical and Computer Engineering Faculty Research & Creative Works
This article proposes a hardware triply selective Rayleigh fading channel emulator which is implemented by incorporating spatial and inter-tap correlation matrices into uncorrelated frequency-flat Rayleigh fading waveforms with a Kronecker product method. the Kronecker product of square roots of three correlation matrices are computed in real time via serial, parallel, or mixed serial-parallel computational methods and then combined with uncorrelated flat fading waveforms. a 4x4 multiple-input multiple-output (MIMO) triply selective channel with 4 correlated delay-taps per subchannel is implemented on a Stratix III FPGA DSP development kit. We show that the three methods provide flexibility for designs in speed and …
Guest Editorial Special Section On The 2009 International Conference On Electromagnetic Near-Field Characterization And Imaging (Iconic'09), Jean Fu Kiang, Sergey Kharkovsky
Guest Editorial Special Section On The 2009 International Conference On Electromagnetic Near-Field Characterization And Imaging (Iconic'09), Jean Fu Kiang, Sergey Kharkovsky
Electrical and Computer Engineering Faculty Research & Creative Works
No abstract provided.
Recent Development Of Via Models: Hybrid Circuit And Field Analysis, Yaojiang Zhang, Jun Fan
Recent Development Of Via Models: Hybrid Circuit And Field Analysis, Yaojiang Zhang, Jun Fan
Electrical and Computer Engineering Faculty Research & Creative Works
Via-plate interaction can be modeled as lumped circuits for vias and a two-dimensional field problem for the plate domain. the accuracy of the improved intrinsic via model and the conventional physics-Based via model is investigated by comparing them with either analytical formula or numerical simulations for a via in a circular plate pair with various edge boundary conditions. It is found that the intrinsic via model matches very well with both the analytical formula and numerical solutions in all the examples studied. However, the physics-Based via model is only an acceptable approximation at low frequencies and its accuracy is not …
A Test-Bed For Secure Hierarchical Data Aggregation In Wireless Sensor Networks, Vimal Kumar, Joshua Mccarville-Schueths, Sanjay Madria
A Test-Bed For Secure Hierarchical Data Aggregation In Wireless Sensor Networks, Vimal Kumar, Joshua Mccarville-Schueths, Sanjay Madria
Computer Science Faculty Research & Creative Works
Data aggregation is a technique used to conserve battery power in wireless sensor networks (WSN). When securing such a network, it is important that we minimize the number of computationally expensive security operations without compromising on the security. This paper deals with the test-bed implementation of our end-to-end secure data aggregation algorithm. Unlike previous algorithms which required separate phases for secure aggregation and integrity verification, ours does not require an additional phase for verification. This saves energy by avoiding additional transmissions and computation overhead on the sensor nodes. We have implemented our secure data aggregation algorithms on mica2 motes. ©2010 …
Polymer (Su-8) Optofluidic Device With Embedded Hydrogel Oxygen Sensing Elements, Zhan Gao, David B. Henthorn, Chang-Soo Kim
Polymer (Su-8) Optofluidic Device With Embedded Hydrogel Oxygen Sensing Elements, Zhan Gao, David B. Henthorn, Chang-Soo Kim
Chemical and Biochemical Engineering Faculty Research & Creative Works
The SU-8 photopolymer is an excellent alternative for traditional materials used in fluidic devices such as glass- or silicon-Based inorganic materials. We describe a new chemically anchored, lithographically patterned hydrogel sensing element embedded in a completed SU-8 fluidic channel structure after the channel bonding process. Polyethylene glycol (PEG) hydrogel films incorporating oxygen-responsive ruthenium-complex fluorophores are grafted and patterned by photopolymerization of solution-phase precursors on the modified SU-8 channel surface. the optofluidic sensing platform with this embedded sensing elements exhibited excellent performance in measuring dissolved oxygen content. a unique advantage of this method is the selective growth of various functional films …
Seismic Anisotropy Beneath The Afar Depression And Adjacent Areas: Implications For Mantle Flow, Stephen S. Gao, Kelly H. Liu, Mohammed G. Abdel Salam
Seismic Anisotropy Beneath The Afar Depression And Adjacent Areas: Implications For Mantle Flow, Stephen S. Gao, Kelly H. Liu, Mohammed G. Abdel Salam
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Shear wave splitting is a robust tool to infer the direction and strength of seismic anisotropy in the lithosphere and underlying asthenosphere. Previous shear wave splitting studies in the Afar Depression and adjacent areas concluded that either Precambrian sutures or vertical magmatic dikes are mostly responsible for the observed anisotropy. Here we report results of a systematic analysis of teleseismic shear wave splitting using all the available broadband seismic data recorded in the Afar Depression, Main Ethiopian Rift (MER), and Ethiopian Plateau. We found that while the ~450 measurements on the Ethiopian Plateau and in the MER show insignificant azimuthal …
Geophysics At The Interface: Response Of Geophysical Properties To Solid-Fluid, Fluid-Fluid, And Solid-Solid Interfaces, Rosemary Knight, Laura J. Pyrak-Nolte, Lee D. Slater, Estella A. Atekwana, Anthony L. Endres, Jil T. Geller, David P. Lesmes, Seiji Nakagawa, Andre Revil, Mukul M. Sharma, Christian Straley
Geophysics At The Interface: Response Of Geophysical Properties To Solid-Fluid, Fluid-Fluid, And Solid-Solid Interfaces, Rosemary Knight, Laura J. Pyrak-Nolte, Lee D. Slater, Estella A. Atekwana, Anthony L. Endres, Jil T. Geller, David P. Lesmes, Seiji Nakagawa, Andre Revil, Mukul M. Sharma, Christian Straley
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Laboratory studies reveal the sensitivity of measured geophysical properties to solid-fluid, fluid-fluid, and solid-solid interfaces in granular and fractured materials. In granular materials, electrical properties and nuclear magnetic resonance relaxation times exhibit a strong dependence on the size and properties of the solid-fluid interface. The electrical and seismic properties of granular materials and the seismic properties of fractured materials reveal a dependence on the size or geometry of fluid-fluid interfaces. Seismic properties of granular and fractured materials are affected by the effective stress and cementing material at solid-solid interfaces. There have been some recent studies demonstrating the use of field-scale …
Winter 2010 E-Certi Newsletter, Center For Educational Research And Teaching Innovation
Winter 2010 E-Certi Newsletter, Center For Educational Research And Teaching Innovation
CAFE Faculty Newsletters
Hello S&T faculty and welcome to another edition of the CERTI newsletter, dedicated to celebrating excellence in the classroom. In this issue, you’ll find articles on a unique method for students to ask questions and how to make history a hands-on learning experience. Also, here are tips from the Curators’ Teaching Professors on working toward balance in your career.
Transient Fluid Flow Phenomena During Continuous Casting: Part I-Cast Start, Yufeng Wang, Lifeng Zhang
Transient Fluid Flow Phenomena During Continuous Casting: Part I-Cast Start, Yufeng Wang, Lifeng Zhang
Materials Science and Engineering Faculty Research & Creative Works
This work presents a three-dimensional numerical simulation of transient fluid flow phenomena during continuous casting of steel. in the Part I, the process of cast start was investigated. Cast start involved the filling process and the caster start process. in the filling process, molten steel was continuously filled into the mold cavity with surrounding mold walls and a dummy bar head at the bottom. to simulate the interface between the molten steel and the air, an algorithm of volume of fluid has been employed. in the cast start process, the dummy bar was gradually dragged out with a low casting …
Direct Observation Of Spin-Polarized Surface States In The Parent Compound Of A Topological Insulator Using Spin- And Angle-Resolved Photoemission Spectroscopy In A Mott-Polarimetry Mode, David Hsieh, Lewis Andrew Wray, Dong Qian, Yuqi Xia, Jan Hugo Dil, Fabian Meier, Luc Patthey, Jurg Osterwalder, Gustav Bihlmayer, Yew San Hor, Robert Joseph Cava, Md Zahid Hasan
Direct Observation Of Spin-Polarized Surface States In The Parent Compound Of A Topological Insulator Using Spin- And Angle-Resolved Photoemission Spectroscopy In A Mott-Polarimetry Mode, David Hsieh, Lewis Andrew Wray, Dong Qian, Yuqi Xia, Jan Hugo Dil, Fabian Meier, Luc Patthey, Jurg Osterwalder, Gustav Bihlmayer, Yew San Hor, Robert Joseph Cava, Md Zahid Hasan
Physics Faculty Research & Creative Works
We report high-resolution spin-resolved photoemission spectroscopy (spin-ARPES) measurements on the parent compound Sb of the recently discovered three-dimensional topological insulator Bi1-xSbx (Hsieh et al 2008 Nature 452 970, Hsieh et al 2009 Science 323 919). By modulating the incident photon energy, we are able to map both the bulk and the (111) surface band structure, from which we directly demonstrate that the surface bands are spin polarized by the spin-orbit interaction and connect the bulk valence and conduction bands in a topologically non-trivial way. A unique asymmetric Dirac surface state gives rise to a k-splitting of its …
Large Group Delay In A Microwave Metamaterial Analog Of Electromagnetically Induced Transparency, Lei Zhang, Philippe Tassin, Thomas Koschny, Cihan Kurter, Steven M. Anlage, C. M. Soukoulis
Large Group Delay In A Microwave Metamaterial Analog Of Electromagnetically Induced Transparency, Lei Zhang, Philippe Tassin, Thomas Koschny, Cihan Kurter, Steven M. Anlage, C. M. Soukoulis
Physics Faculty Research & Creative Works
We report on our experimental work concerning a planar metamaterial exhibiting classical electromagnetically induced transparency (EIT). Using a structure with two mirrored split-ring resonators as the dark element and a cut wire as the radiative element, we demonstrate that an EIT-like resonance can be achieved without breaking the symmetry of the structure. The mirror symmetry of the metamaterial's structural element results in a selection rule inhibiting magnetic dipole radiation for the dark element, and the increased quality factor leads to low absorption (<10%) and large group index (of the order of 30).