Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Civil and Environmental Engineering (236)
- Physical Sciences and Mathematics (227)
- Electrical and Computer Engineering (221)
- Mechanical Engineering (192)
- Computer Engineering (141)
-
- Chemical Engineering (95)
- Education (92)
- Energy Systems (87)
- Operations Research, Systems Engineering and Industrial Engineering (79)
- Arts and Humanities (78)
- History (69)
- Other Mechanical Engineering (68)
- History of Science, Technology, and Medicine (65)
- Science and Mathematics Education (65)
- Civil Engineering (65)
- United States History (64)
- Social and Behavioral Sciences (64)
- Structural Engineering (62)
- Computer Sciences (57)
- Materials Science and Engineering (54)
- Aerospace Engineering (45)
- Life Sciences (32)
- Biomedical Engineering and Bioengineering (32)
- Transportation Engineering (27)
- Chemistry (27)
- Electrical and Electronics (27)
- Science and Technology Studies (26)
- Business (26)
- Environmental Engineering (26)
- Institution
-
- University of Nebraska - Lincoln (155)
- Missouri University of Science and Technology (138)
- Air Force Institute of Technology (84)
- New Jersey Institute of Technology (63)
- California Polytechnic State University, San Luis Obispo (60)
-
- University of Wollongong (59)
- University of Texas at El Paso (42)
- Selected Works (35)
- University of South Carolina (35)
- University of Kentucky (34)
- Purdue University (33)
- University of Massachusetts Amherst (31)
- Technological University Dublin (30)
- SelectedWorks (29)
- Old Dominion University (25)
- University of Central Florida (22)
- Embry-Riddle Aeronautical University (20)
- Brigham Young University (19)
- Rochester Institute of Technology (19)
- Iowa State University (18)
- Cleveland State University (18)
- Washington University in St. Louis (17)
- University of Pennsylvania (13)
- Marquette University (12)
- National Taiwan Ocean University (12)
- University of Tennessee, Knoxville (11)
- TÜBİTAK (10)
- Western Michigan University (10)
- Louisiana Tech University (9)
- Utah State University (9)
- Keyword
-
- Engineering (30)
- Construction (12)
- 04. Personalities in Polymer Science (12)
- Polymer Science (12)
- Buildings (10)
-
- Building (10)
- Plumbing (10)
- Architecture (10)
- Internet (9)
- Social and Behavioral Sciences (9)
- Teaching Module (9)
- Chemical Engineering (9)
- Medicine and Health Sciences (9)
- Life Sciences (9)
- Physical Sciences and Mathematics (9)
- Electromagnetic Interference (9)
- Electromagnetic Compatibility (8)
- Finite Difference Time-Domain Analysis (8)
- Time Domain Analysis (8)
- Printed Circuit Boards (7)
- Heterojunctions (7)
- Mathematical Models (7)
- Neurocontrollers (7)
- Finite Difference Method (7)
- Electromagnetic Shielding (6)
- Design (6)
- Metallurgical industry (6)
- III-V semiconductors (6)
- Air pollutants (5)
- Applied sciences (5)
- Publication
-
- Theses and Dissertations (84)
- Nebraska Tractor Tests (64)
- Faculty Publications (61)
- Electrical and Computer Engineering Faculty Research & Creative Works (47)
- CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018) (45)
-
- Departmental Technical Reports (CS) (42)
- Theses (32)
- Dissertations (31)
- Faculty of Engineering - Papers (Archive) (29)
- JTRP Technical Reports (26)
- Faculty of Engineering and Information Sciences - Papers: Part A (24)
- FSEC Energy Research Center® (19)
- Kentucky Transportation Center Research Report (19)
- Journal of the Microelectronic Engineering Conference (19)
- Masters Theses (18)
- All Computer Science and Engineering Research (17)
- Electrical Engineering (17)
- Civil and Environmental Engineering (16)
- Doctoral Dissertations (15)
- Faculty Publications from the Department of Electrical and Computer Engineering (14)
- Biological Systems Engineering: Papers and Publications (13)
- Journal of Marine Science and Technology (12)
- ACUTA Newsletters (12)
- Mechanical Engineering Faculty Publications (11)
- Mechanical and Aerospace Engineering Faculty Research & Creative Works (10)
- Building Services Engineering (10)
- Ethics in Science and Engineering National Clearinghouse (10)
- Turkish Journal of Electrical Engineering and Computer Sciences (10)
- Conference papers (10)
- Dissertations, Theses, and Masters Projects (9)
- Publication Type
- File Type
Articles 1 - 30 of 1216
Full-Text Articles in Engineering
Oczyszczanie Gazów Odlotowych Ze Spalania Odpadów Niebezpiecznych, Robert Oleniacz
Oczyszczanie Gazów Odlotowych Ze Spalania Odpadów Niebezpiecznych, Robert Oleniacz
Robert Oleniacz
Flue gas cleaning system is a very important part of each hazardous waste incineration plant. Air pollutant emission limit values permissible for this process in Member States of the European Union are so rigorous that the installation designers there are forced to use very effective and of course expensive solutions. In the paper a review of methods and systems used to the treatment of flue gases from hazardous waste incineration is presented. This can be particularly useful in the face of the adaptation of existing waste incineration plant operating in Poland with European Union requirements.
English title: Cleaning of flue ...
The Electrostatic Interaction Of Charged, Dust-Particle Pairs In Plasmas, M. E. Markes, P. F. Williams
The Electrostatic Interaction Of Charged, Dust-Particle Pairs In Plasmas, M. E. Markes, P. F. Williams
Faculty Publications from the Department of Electrical and Computer Engineering
We report the results of a study of the electrostatic interaction between negatively charged particles in a plasma. The goal of the study was to investigate the possibility of an attractive interaction which would make possible the formation of “molecules” of particles. For all approximations relating the positive ion density to the local electrostatic potential that we examined, we find that the interaction is repulsive for all particle separations.
A Simulation-Based Heuristic For Fleet Assignment, Sonia Rosario Anorga
A Simulation-Based Heuristic For Fleet Assignment, Sonia Rosario Anorga
FIU Electronic Theses and Dissertations
Integer programming, simulation, and rules of thumb have been integrated to develop a simulation-based heuristic for short-term assignment of fleet in the car rental industry. It generates a plan for car movements, and a set of booking limits to produce high revenue for a given planning horizon.
Three different scenarios were used to validate the heuristic. The heuristic's mean revenue was significant higher than the historical ones, in all three scenarios. Time to run the heuristic for each experiment was within the time limits of three hours set for the decision making process even though it is not fully ...
Growth And Characterization Of Zno For The Front Contact Of Cu(In,Ga)Se2, Rita Bhatt
Growth And Characterization Of Zno For The Front Contact Of Cu(In,Ga)Se2, Rita Bhatt
Graduate Theses and Dissertations
ZnO window layers for CIGS solar cells are grown with a DC sputtering technique instead of a conventional RF sputtering technique. Transparent window layers and buffer layers are sputtered from the Zn target in the presence of Oxygen. The window layer is doped with Aluminum in order to achieve high electrical conductivity and thermal stability. The effect of different sputtering parameters on the electrical and optical properties of the films is elaborately studied. Sets of annealing experiments are also performed. Combinations of different deposition parameters are examined to design the optimum fabrication conditions. We are able to deposit 85% transparent ...
Qualitative Modeling For Magnetization Curve, Pei-Hwa Huang, Yu-Shuo Chang
Qualitative Modeling For Magnetization Curve, Pei-Hwa Huang, Yu-Shuo Chang
Journal of Marine Science and Technology
This paper studies the derivation of a qualitative description for the magnetization curve of saturable magnetic materials. From a set of numerical input-output data, a fuzzy model, which is a collection of fuzzy IF-THEN rules for describing the studied system, is first constructed for the magnetization curve. A procedure consisting of a fuzzy clustering method and a rule processing algorithm is then employed for processing the constructed fuzzy modeling rules to extract the qualitative properties of the curve. The proposed approach is objective in that it can yield the system qualitative features without domain experts’ knowledge. An example is demonstrated ...
Linearly Unbiased Estimation Combined With Jc Method For The Carbonation Contamination Of Some Concrete Bridges In Taipei, Ming-Te Liang, Guo-Fan Zhao, Yen-Sheng Liao, Chih-Hsin Liang
Linearly Unbiased Estimation Combined With Jc Method For The Carbonation Contamination Of Some Concrete Bridges In Taipei, Ming-Te Liang, Guo-Fan Zhao, Yen-Sheng Liao, Chih-Hsin Liang
Journal of Marine Science and Technology
The main purpose of this investigation was to study the durability evaluations of existing concrete bridges due to carbonation contamination. The linearly unbiased estimation method associated with the JC method developed by the Joint Committee on Structural Safety was adopted to predict the mean value and standard deviation of the normal distribution for the carbonation depths and cover thickness of concrete bridges. The reliability index (β) and failure probability (Pf) of concrete bridges were also evaluated. Since the linearly unbiased estimation method is very suitable for analyzing a small number of specimens obtained from practical engineering problems, the unknown parameters ...
Coherent Reflection Of Acoustic Plane Wave From Rough Interfaces In A Stratified Random Fluid Medium, Jin-Yuan Liu, Shiahn-Wern Shyue, Chen-Fen Huang
Coherent Reflection Of Acoustic Plane Wave From Rough Interfaces In A Stratified Random Fluid Medium, Jin-Yuan Liu, Shiahn-Wern Shyue, Chen-Fen Huang
Journal of Marine Science and Technology
Coherent reflection of an acoustic plane wave from rough interfaces in a horizontally-stratified medium, within which the sound-speed distribution subject to a small and random perturbation, is considered in this paper. The general formulation based upon the theory for rough-interface scattering in a stratified medium, in conjunction with that for random medium is derived. The Green’s function for a random medium bounded by two surfaces, which serves as generic solution of the problem, is obtained. The formulation is then applied to a simplified seabed environment to study the effects of surface roughness and medium inhomogenieties on the coherent reflection ...
Thermodynamic Aspect And Diffusion Model On Interdiffusion Of Laminate Structure, Shing-Hoa Wang
Thermodynamic Aspect And Diffusion Model On Interdiffusion Of Laminate Structure, Shing-Hoa Wang
Journal of Marine Science and Technology
A non-uniform system such as microsegregation, heterogeneous microstructure and multiple-layer deposition of thin films, always exists in the engineering materials and the electronic materials for solid state devices. As a consequence of interdiffusion under high temperature exposure, The dynamical changes of composition profiles and vacancies could lead to materials in earlier failure and reduce the life time of the component. Several theoretical fundamentals have been proposed on different aspects, including(1) the void formation at the steepest concentration gradient:(2) thermodynamic view points of excess vacancy flux;(3) the model of interdiffusion for dynamic composition profile change; and(4) stress ...
Effect Of Asymmetric Hydrodynamic Impact On The Dynamic Response, Jianbo Hua, Jeun-Len Wu, Wei-Hui Wang
Effect Of Asymmetric Hydrodynamic Impact On The Dynamic Response, Jianbo Hua, Jeun-Len Wu, Wei-Hui Wang
Journal of Marine Science and Technology
Due to the asymmetric water entry over a submerged part of a ship, the effect of the hydrodynamic impact on the dynamic response of a plate structure is investigated numerically by employing an orthogonal plate theory. The effect is found significant in the calculation. Both the deflection and the stress in the plate increase as the asymmetric degree under water entry of a bottom structure increases. Because of the structural dynamic effect, the maximum deflection at a heel angle of 20 degrees becomes about 50% more than that of the quasi-static approach, and the maximum stress in ydirection 40% more ...
On The Design And Analysis Of Ship Stabilizimg Fin Controller, Ching-Yaw Tzeng, Chung-Yi Wu
On The Design And Analysis Of Ship Stabilizimg Fin Controller, Ching-Yaw Tzeng, Chung-Yi Wu
Journal of Marine Science and Technology
A ship stabilizing fin controller based on the Internal Model Control (IMC) method is described in this paper. The proposed method directly shapes the output sensitivity function which relates the wave disturbance to the ship roll motion to achieve good disturbance rejection. The adopted IMC method gives a controller that depends explicitly on the model parameters and a design parameter that specifies the desired system response. Moreover, under the IMC structure, the sensitivity functions depend linearly on the design transfer function and this makes it easy to satisfy the internal stability condition. A reference conditioning technique is employed in the ...
Evaluation Of Kentucky's Graduated Driver Licensing System, Kenneth R. Agent, Jerry G. Pigman, Lorena C. Steenbergen, Susan H. Pollack, Pamela S. Kidd, Caroline Mccoy
Evaluation Of Kentucky's Graduated Driver Licensing System, Kenneth R. Agent, Jerry G. Pigman, Lorena C. Steenbergen, Susan H. Pollack, Pamela S. Kidd, Caroline Mccoy
Kentucky Transportation Center Research Report
Kentucky's current GDL program, which applies to drivers up to age 18, was enacted in 1996. The program includes a six-month instruction permit for drivers under age 18 (minimum age 16), a restriction on driving between midnight and 6am and a requirement for adult-supervised driving for permit drivers. In addition, there is a six-point limit on traffic violations with a penalty of license suspension for drivers under age 18, a requirement for a four-hour driving safety education class (or driver education course) and a 0.02 ml/dl limit on blood alcohol concentration (continues up to age 21 ).
Objectives ...
Study Of Photoelectrochemical Cells For Hydrogen Production By Water Splitting Using Cigs2/Cds Heterojunction, Florida Solar Energy Center, Neelkanth Dhere
Study Of Photoelectrochemical Cells For Hydrogen Production By Water Splitting Using Cigs2/Cds Heterojunction, Florida Solar Energy Center, Neelkanth Dhere
FSEC Energy Research Center®
Study of Photoelectrochemical Cells for Hydrogen Production by Water Splitting Using CIGS2/CdS Heterojunction
A Web-Based Interface For Storing And Executing Simulation Models, Paul Savory
A Web-Based Interface For Storing And Executing Simulation Models, Paul Savory
Industrial and Management Systems Engineering Faculty Publications
The dominance of the Internet in the development of information and communication technology has made Web-based distributed solutions increasingly attractive. Apart from providing other services, the World Wide Web is being looked upon as an environment for hosting modeling and simulation applications. SIMAN is a simulation language that allows users to simulate discrete and continuous systems. In this research, a web-based interface or toolkit has been developed for storing and executing SIMAN simulation models over the Internet. This toolkit consists of a World Wide Web interface to SIMAN and a web-accessible database for storing user models. It provides users an ...
Thermionic Cooling Of Optoelectronic And Microelectronic Devices, S. P. Lee, B. C. Lough, R. A. Lewis, C. Zhang
Thermionic Cooling Of Optoelectronic And Microelectronic Devices, S. P. Lee, B. C. Lough, R. A. Lewis, C. Zhang
Faculty of Engineering - Papers (Archive)
Solid-state thermionic cooling has gained attention recently because of its potential high cooling power. Thermionic devices based on semiconductor heterostructures utilize the band-edge offset at a heterojunction as the thermionic emission potential barrier and a thin layer to separate the cold and hot junction. In this paper, we present the behavior of thermionic coolers with periodic barriers using gallium arsenide/aluminium gallium arsenide (GaAs/Al/sub x/Ga/sub 1-x/As) semiconductor heterostructures. The exact numerical calculation to model the device performance has shown that the thermal efficiency in a multilayer structure is optimised when the effect of phonon scattering ...
Environmental Management Of Wastes In The Semiconductor And Electronics Industries, Samuel A. Vigil
Environmental Management Of Wastes In The Semiconductor And Electronics Industries, Samuel A. Vigil
Civil and Environmental Engineering
The management of wastes in the semiconductor and electronics industries requires a multidisciplinary approach that considers the health and safety of employees as well as the treatment and recycling of waste materials. The manufacturing of semiconductor devices requires the use of many toxic chemicals and gases. Air emissions from manufacturing tools must be carefully monitored both inside and outside of the fabrication facility. Liquid effluents must be collected and pretreated before discharge to local wastewater systems. The subsequent use and eventual discard of electronic devices such as television sets and personal computers by consumers has created a new set of ...
High-Quality P-N Junctions With Quaternary Alingan/Ingan Quantum Wells, A. Chitnis, A. Kumar, M. Shatalov, V. Adivarahan, A. Lunev, J. W. Yang, Grigory Simin, M. Asif Khan, R. Gaska, M. Shur
High-Quality P-N Junctions With Quaternary Alingan/Ingan Quantum Wells, A. Chitnis, A. Kumar, M. Shatalov, V. Adivarahan, A. Lunev, J. W. Yang, Grigory Simin, M. Asif Khan, R. Gaska, M. Shur
Faculty Publications
We report on quaternary AlInGaN/InGaN multiple quantum well(MQW)light emitting diode structures grown on sapphire substrates. The structures demonstrate high quality of the p–njunctions with quaternary MQW. At low forward bias (below 2 V), the temperature dependent of current–voltage characteristics are exponential with the ideality factor of 2.28, which is in a good agreement with the model of the injected carrier recombination in the space charge region. This ideality factor value is approximately three times lower than for conventional GaN/InGaN light emitting diodes(LEDs). The obtained data indicate the recombination in p–njunction space ...
5. Burton Carl Anderson, Otto Vogl
5. Burton Carl Anderson, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Solitary Waves And Supersonic Reaction Front In Metastable Solids, Hendrik J. Viljoen, Lee L. Lauderback, D. Sornette
Solitary Waves And Supersonic Reaction Front In Metastable Solids, Hendrik J. Viljoen, Lee L. Lauderback, D. Sornette
Hendrik J. Viljoen Publications
Motivated by an increasing number of remarkable experimental observations on the role of pressure and shear stress in solid reactions, explosions and detonations, we present a simple toy model that embodies nonlinear elasticity and dispersion as well as chemical or phase transformation. This generalization of the Toda Lattice provides an effective model for the description of the organization during an abrupt transformation in a solid. One of the challenges is to capture both the equilibrium degrees of freedom as well as to quantify the possible role of out-of-equilibrium perturbations. In the Toda Lattice, we verify that the particle velocities converge ...
Acuta Enews December 2000, Vol. 29, No. 12
Acuta Enews December 2000, Vol. 29, No. 12
ACUTA Newsletters
In This Issue
UConn Wins in Court
ACUTA EVENTS
Spotlight on Volunteers
DC Update
Board Report
Higher Education and Truth-in-Billing
Web Site Recognition
Welcome New Members
Positions Available
A Web-Based Interface For Storing And Executing Simulation Model, Ashu Guru, Paul Savory, Robert Williams
A Web-Based Interface For Storing And Executing Simulation Model, Ashu Guru, Paul Savory, Robert Williams
Industrial and Management Systems Engineering Faculty Publications
The dominance of the Internet in the development ofinformation and communication technology has madeWeb-based distributed solutions increasingly attractive.Apart from providing other services, the World Wide Webis being looked upon as an environment for hostingmodeling and simulation applications. SIMAN is asimulation language that allows users to simulate discreteand continuous systems. In this research, a web-basedinterface or toolkit has been developed for storing andexecuting SIMAN simulation models over the Internet.This toolkit consists of a World Wide Web interface toSIMAN and a web-accessible database for storing usermodels. It provides users an easy-to-use environment fordeveloping text-based simulation models using the SIMANsimulation language ...
Combined Loading Of Composite Box-Beams With Linearized Differential Equations Of Motion, Michael Alan Dupuis
Combined Loading Of Composite Box-Beams With Linearized Differential Equations Of Motion, Michael Alan Dupuis
Master's Theses - Daytona Beach
The purpose of the following analysis is to develop a method for determining vertical, horizontal, and torsional displacements of arbitrarily laminated, cantilevered composite box-beam under static, transverse loading. Small deflections are assumed and the differential equations of motion have been linearized for ease of calculation. The Smith and Chopra stiffness matrix is used in the equations of motion, and software was written to solve for the stiffness matrix elements. Comparisons are made with bending slope solutions from previously published results, and the presented analysis is compared to empirical results of a composite box-beam under tip loading. Finally, an example solution ...
Theory And Experiment Of High-Speed Cross-Gain Modulation In Semiconductor Lasers, Xiaomin Jin, T. Keating, Shun-Lien Chuang
Theory And Experiment Of High-Speed Cross-Gain Modulation In Semiconductor Lasers, Xiaomin Jin, T. Keating, Shun-Lien Chuang
Electrical Engineering
We present theory and experiment for the high-speed modulation response of a quantum-well (QW) laser in the presence of an external microwave modulated optical pump in the gain region. The model includes the effects of pump-induced stimulated recombination and cross-gain saturation. Expressions for the small-signal modulation response of the test laser under gain modulation are derived. We also present experimental results using a multiple-QW InGaAlAs Fabry-Perot (FP) laser at 1.552 μm as the test laser and an external pump by a 1.542 μm DFB laser. Comparison between electrical modulation and optical cross-gain modulation (XGM) of the test laser ...
Corrosion Of Galvanized Fasteners: Appendix, Steel Framing Alliance
Corrosion Of Galvanized Fasteners: Appendix, Steel Framing Alliance
American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)
No abstract provided.
5. Burton Carl Anderson, Otto Vogl
An Atm System Model And Wireless Channel Simulation, Karen Dunne
An Atm System Model And Wireless Channel Simulation, Karen Dunne
Masters
Congestion in the low frequency regions of the electromagnetic spectrum and demand for support of high bandwidth applications has prompted widespread investigations into networking technologies and communications media. Traditional networking technologies such as Ethernet that are not capable of adequately supporting high bandwidth applications (e.g. videoconferencing) are being replaced by high speed, high bandwidth technologies such as Asynchronous Transfer Mode (ATM). In the communications media market, wireless systems are becoming ubiquitous due to their ease of installation and maintenance costs. In this research, the networking technology of interest is ATM. ATM used a cell switching architecture that allows seamless ...
Itanium's New Basic Operation Of Fused Multiply-Add: Theoretical Explanation And Theoretical Challenge, Vladik Kreinovich
Itanium's New Basic Operation Of Fused Multiply-Add: Theoretical Explanation And Theoretical Challenge, Vladik Kreinovich
Departmental Technical Reports (CS)
A new Intel's 64-bit chip Itanium has a new instruction set which includes a fused multiply-add instruction x1+x2*x3. In this short article, we explain the empirical reasons behind the choice of this instruction, give possible theoretical explanation for this choice, and mention a related theoretical challenge.
Effect Of Gate Leakage Current On Noise Properties Of Algan/Gan Field Effect Transistors, S. L. Rumyantsev, N. Pala, M. S. Shur, R. Gaska, M. E. Levinshtein, M. Asif Khan, Grigory Simin, X. Hu, J. Yang
Effect Of Gate Leakage Current On Noise Properties Of Algan/Gan Field Effect Transistors, S. L. Rumyantsev, N. Pala, M. S. Shur, R. Gaska, M. E. Levinshtein, M. Asif Khan, Grigory Simin, X. Hu, J. Yang
Faculty Publications
The effect of the gate leakage current fluctuations on noiseproperties of AlGaN/GaN heterostructurefield effect transistors(HFETs) has been studied in conventional HFET structures and in AlGaN/GaN metal-oxide-semiconductorheterostructurefield effect transistors (MOS-HFETs). The comparison of the noiseproperties of conventional AlGaN/GaN HFETs and AlGaN/GaN MOS-HFETs fabricated on the same wafer, allowed us to estimate the contribution of the gate currentnoise to the HFET’s output noise. The effect of the gate current fluctuations on output noiseproperties of HFETs depends on the level of noise in the AlGaN/GaN HFETs. For the transistors with a relatively high magnitude of the ...
The Viscoelastic Behavior Of Pigmented Latex Coating Films, Katharina Prall
The Viscoelastic Behavior Of Pigmented Latex Coating Films, Katharina Prall
Electronic Theses and Dissertations
The mechanical properties of paper coatings are essential for use performance of coated paper (e.g. calendering, printing degradation during printing operations, pick). This study investigates the microscopic and macroscopic mechanisms that determine the viscoelastic behavior of pigmented latex coating films. Pigmented coating layers were prepared with different microstructures. This was achieved by using different pigment types and shapes (polystyrene plastic pigment - spheres, precipitated calcium carbonate - rhombs, clay - plates), and changing pigment volume concentration (PVC). Two styrene-butadiene latices with different degree of carboxylation (acidic level 0.3% and 4.5%) were evaluated to determine effect of adhesion. The viscoelastic material ...
Time-Varying System Identification Using Modulating Functions And Spline Models With Application To Bio-Processes, Sridhar Ungarala, Tomas B. Co
Time-Varying System Identification Using Modulating Functions And Spline Models With Application To Bio-Processes, Sridhar Ungarala, Tomas B. Co
Chemical & Biomedical Engineering Faculty Publications
Time dependent parameters are frequently encountered in many real processes which need to be monitored for process modeling, control and supervision purposes. Modulating functions methods are especially suitable for this task because they use the original continuous-time differential equations and avoid differentiation of noisy signals. Among the many versions of the method available, Pearson–Lee method offers a computationally efficient alternative. In this paper, Pearson–Lee method is generalized for non-stationary continuous-time systems and the on-line version is developed. The time dependent parameters are modeled as polynomial splines inside a moving data window and recursion formulae using shifting ...