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Articles 9541 - 9570 of 33648
Full-Text Articles in Entire DC Network
Efficient Location Identification Of Multiple Line Outages With Limited Pmus In Smart Grids, Jie Wu, Jinjun Xiong, Yiyu Shi
Efficient Location Identification Of Multiple Line Outages With Limited Pmus In Smart Grids, Jie Wu, Jinjun Xiong, Yiyu Shi
Electrical and Computer Engineering Faculty Research & Creative Works
The efficient location identification of multiple line outages is critical to not only cascading failure elimination but also repair cost reduction. Most of existing methods, however, fail to handle location identification well. This failure typically occurs because the methods cannot overcome two challenges: the very limited number of phasor measurement units (PMUs) and the high computational complexity. This paper presents an efficient algorithm inspired by the ambiguity group theory to identify the locations of line outages with limited PMUs. Using 14-, 57-, 118-, 300-, and 2383-bus systems, our experimental study demonstrates that the proposed technique successfully identifies the most likely …
On The Efficacy Of Through-Silicon-Via Inductors, Umamaheswara Rao Tida, Rongbo Yang, Cheng Zhuo, Yiyu Shi
On The Efficacy Of Through-Silicon-Via Inductors, Umamaheswara Rao Tida, Rongbo Yang, Cheng Zhuo, Yiyu Shi
Electrical and Computer Engineering Faculty Research & Creative Works
Through-silicon-vias (TSVs) can potentially be used to implement inductors in 3-D integrated systems for minimal footprint and large inductance. However, different from conventional 2-D spiral inductors, TSV inductors are fully buried in the lossy substrate, thus suffering from low quality factors. In this paper, we systematically examine how various process and design parameters affect their performance. A few interesting phenomena that are unique to TSV inductors are observed. We then propose a novel shield mechanism utilizing the microchannel, a technique conventionally used for heat removal, to reduce the substrate loss. The technique increases the quality factor and inductance of the …
Experimental Study Of Counter-Doped Junction Termination Extension For 4h-Sic Power Devices, Jheng Yi Jiang, Hua Chih Hsu, Kuan Wei Chu, Chih Fang Huang, Feng Zhao
Experimental Study Of Counter-Doped Junction Termination Extension For 4h-Sic Power Devices, Jheng Yi Jiang, Hua Chih Hsu, Kuan Wei Chu, Chih Fang Huang, Feng Zhao
Electrical and Computer Engineering Faculty Research & Creative Works
In this letter, a counter-doped junction termination extension (CD-JTE) structure was experimentally implemented and studied. Two groups of 4H-SiC PiN diodes were fabricated with two n-type drift layer thicknesses of 11 and 30 \mu \text{m}, respectively, and with different termination structures, in order to demonstrate the wide JTE dose tolerance of CD-JTE. Three different doses, 1.7 \times 10^{13}, 2.2\times 10^{13} , and 2.8\times 10^{13} cm ^{-2} , were used for the critical JTE implantation. The measured breakdown voltages (BVs) of the diodes with all termination structures and JTE doses were compared with simulation predictions. Electroluminescence at the BV was recorded …
Acoustic Attenuators Based On Porous Nanostructured Materials, Hongbing Lu, Ning Xiang, Nicholas Leventis, Chariklia Sotiriou-Leventis
Acoustic Attenuators Based On Porous Nanostructured Materials, Hongbing Lu, Ning Xiang, Nicholas Leventis, Chariklia Sotiriou-Leventis
Chemistry Faculty Research & Creative Works
The invention is directed to a porous, acoustic attenuating composition, wherein the composition comprises a nanostructured material and wherein the composition exhibits acoustic transmission loss ranging from 20 to 60 dB/cm thickness of the composition.
Detecting Self-Harming Activities With Wearable Devices, Levi Malott, Pratool Bharti, Nicholas Hilbert, Ganesh Gopalakrishna, Sriram Chellappan
Detecting Self-Harming Activities With Wearable Devices, Levi Malott, Pratool Bharti, Nicholas Hilbert, Ganesh Gopalakrishna, Sriram Chellappan
Computer Science Faculty Research & Creative Works
In the United States, there are more than 35, 000 reported suicides with approximately 1, 800 of them being psychiatric inpatients. Staff perform intermittent or continuous observations in order to prevent such tragedies, but a study of 98 articles over time showed that 20% to 62% of suicides happened while inpatients were on an observation schedule. Reducing the instances of suicides of inpatients is a problem of critical importance to both patients and healthcare providers. In this paper, we introduce SHARE - A Self-Harm Activity Recognition Engine, which attempts to infer self-harming activities from sensing accelerometer data using smart devices …
Real Time Mission Planning, Emad William Saad, Stefan Richard Bieniawski, Paul Edward Riley Pigg, John Lyle Vian, Paul Michael Robinette, Donald C. Wunsch
Real Time Mission Planning, Emad William Saad, Stefan Richard Bieniawski, Paul Edward Riley Pigg, John Lyle Vian, Paul Michael Robinette, Donald C. Wunsch
Electrical and Computer Engineering Faculty Research & Creative Works
The different advantageous embodiments provide a system comprising a number of computers, a graphical user interface, first program code stored on the computer, and second program code stored on the computer. The graphical user interface is executed by a computer in the number of computers. The computer is configured to run the first program code to define a mission using a number of mission elements. The computer is configured to run the second program code to generate instructions for a number of assets to execute the mission and monitor the number of assets during execution of the mission.
Optimal Selected Phasor Measurement Units For Identifying Multiple Line Outages In Smart Grid, Jie Wu, Jinjun Xiong, Prasenjit Shil, Yiyu Shi
Optimal Selected Phasor Measurement Units For Identifying Multiple Line Outages In Smart Grid, Jie Wu, Jinjun Xiong, Prasenjit Shil, Yiyu Shi
Electrical and Computer Engineering Faculty Research & Creative Works
Thanks to the advent of clock synchronization via the global positioning system (GPS), phasor measurement units (PMUs) collecting both the magnitude and phase angle with higher precision have implications for monitoring performance across the wide area of smart grids. Owing to high PMUs installation costs, developing optimal strategy of PMUs placement is important to monitor the transmission system status in the wide area. To characterize the performance of line outage identification, this paper firstly proposes the statistical model to describe the average identification capability of multiple line outages. Using this model, we develop a global optimal PMUs placement strategy to …
Preface, Gennady Fridman, Jeremy Levesley, Ivan Tyukin, Donald C. Wunsch
Preface, Gennady Fridman, Jeremy Levesley, Ivan Tyukin, Donald C. Wunsch
Electrical and Computer Engineering Faculty Research & Creative Works
In August 2014 a conference on “Model reduction across disciplines” was held in Leicester, UK. As a scientific field, model reduction is an important part of mathematical modelling and data analysis with very wide areas of applications. The main scientific goal of the conference was to facilitate interdisciplinary discussion of model reduction and coarse-graining methodologies in order to reveal their general mathematical nature. This time, however, the conference had an additional personal and more profound mission – it was dedicated to the 60th birthday of Professor Alexander Gorban (albeit with some delay) whose fantastic achievements in applying model reduction techniques …
Faculty Senate Minutes Jun. 18, 2015, Missouri University Of Science And Technology Faculty Senate
Faculty Senate Minutes Jun. 18, 2015, Missouri University Of Science And Technology Faculty Senate
Minutes & Agendas
No abstract provided.
Blended Classes: Expectations Vs. Reality, Susan L. Murray, Julie Phelps, Kelly L. Jones
Blended Classes: Expectations Vs. Reality, Susan L. Murray, Julie Phelps, Kelly L. Jones
Engineering Management and Systems Engineering Faculty Research & Creative Works
Blended courses, also called hybrid, have a portion of the course taught face-to-face in a classroom, and at least one-third of the course work is online. Some instructors consider this format to be "the best of both worlds." Students receive the personal contact and interaction with the instructor during the classroom portion. They also have flexibility in the pace, access, and repetition of the online content. In this paper, we explore 49 graduate students' expectations for a required operations management course that was delivered in a blended format. The same students were also surveyed at the completion of the course …
Burner, Emitter, And Recuperator Development For Lightweight Thermophotovoltaic Power Supply, Lewis Fraas, Leonid Minkin, J. Avery, Hui She, L. Ferguson, Fatih Dogan
Burner, Emitter, And Recuperator Development For Lightweight Thermophotovoltaic Power Supply, Lewis Fraas, Leonid Minkin, J. Avery, Hui She, L. Ferguson, Fatih Dogan
Materials Science and Engineering Faculty Research & Creative Works
Like batteries, thermophotovoltaic generators produce DC electricity quietly. TPV uses infrared photovoltaic cells to convert infrared radiation from a combustion heated ceramic IR emitter. However, because the specific energy in a hydrocarbon fuel like propane or butane is 12,900 Wh/kg, much larger than the specific energy of 145 Wh/kg for a Li-ion battery, TPV is very promising as a lightweight DC power supply. A portable cylindrical thermophotovoltaic (TPV) battery replacement concept has been previously described. It consists of a cylindrical TPV receiver assembly using simple diffused junction GaSb IR cells along with a novel omega recuperator and a novel doped …
Remarkably Robust And Correlated Coherence And Antiferromagnetism In (Ce₁₋ₓlaₓ)Cu₂Ge₂, Halyna Hodovanets, S. L. Bud'ko, W. E. Straszheim, V. Taufour, E. D. Mun, Hyunsoo Kim, R. Flint, P. C. Canfield
Remarkably Robust And Correlated Coherence And Antiferromagnetism In (Ce₁₋ₓlaₓ)Cu₂Ge₂, Halyna Hodovanets, S. L. Bud'ko, W. E. Straszheim, V. Taufour, E. D. Mun, Hyunsoo Kim, R. Flint, P. C. Canfield
Physics Faculty Research & Creative Works
We present magnetic susceptibility, resistivity, specific heat, and thermoelectric power measurements on (Ce1-xLax)Cu2Ge2 single crystals (0 ≤ x ≤ 1). With La substitution, the antiferromagnetic temperature TN is suppressed in an almost linear fashion and moves below 0.36 K, the base temperature of our measurements for x > 0.8. Surprisingly, in addition to robust antiferromagnetism, the system also shows low temperature coherent scattering below Tcoh up to ∼0.9 of La, indicating a small percolation limit ∼9% of Ce. Tcoh as a function of magnetic field was found to have different behavior …
Analysis Of Neurite Outgrowth On Electrospun Fiber Scaffolds In The Presence Of Blebbistatin And Paclitaxel, A. R. D'Amato, N. J. Schaub, C. D.L. Johnson, J. Cardenas, R. J. Gilbert
Analysis Of Neurite Outgrowth On Electrospun Fiber Scaffolds In The Presence Of Blebbistatin And Paclitaxel, A. R. D'Amato, N. J. Schaub, C. D.L. Johnson, J. Cardenas, R. J. Gilbert
Chemical and Biochemical Engineering Faculty Research & Creative Works
In an attempt to increase the rate of neurite extension from E9 chick embryo dorsal root ganglion (DRG) on electro spun fiber scaffolds we experimented with two drugs that have been used previously to affect neuronal growth. Blebbistatin and paclitaxel were added to DRG cultured on electro spun fibers in an attempt to increase the rate of neurite extension along fibrous scaffolds. Blebbistatin increased the length of neurites extending from the DRG explant in comparison to the drug-free control group. In contrast, paclitaxel completely eliminated all neurite extension from the DRG explant when compared to the control. A third treatment …
Initial Astrocyte Response To Electrospun Poly-L-Lactic Acid Fibers Of Varying Nanoscale Diameters, C. D.L. Johnson, J. M. Zuidema, G. P. Desmond, A. R. D'Amato, N. J. Schaub, R. J. Gilbert
Initial Astrocyte Response To Electrospun Poly-L-Lactic Acid Fibers Of Varying Nanoscale Diameters, C. D.L. Johnson, J. M. Zuidema, G. P. Desmond, A. R. D'Amato, N. J. Schaub, R. J. Gilbert
Chemical and Biochemical Engineering Faculty Research & Creative Works
We hypothesized that fiber diameter within an electro spun fiber scaffold would affect astrocyte elongation and maturation. To examine the relationship, astrocytes were seeded on 400nm and 800nm diameter electro spun PLLA fibers. Immunohistochemistry was used to monitor cell morphology, and GLT-1 expression over the first 96 hours after seeding. The results indicate that astrocytes extended along the primary axis of the 800nm fibers more rapidly than astrocytes seeded on fibers of half the size. While GLT-1 was expressed diffusely throughout the surface of the astrocytes, elongated cell processes exhibited dense regions of GLT-1. These results show that 800nm fibers …
Astrocyte Response To Nanoscale Topography On Anodized Alumina Surfaces, D. Ganguly, C. D.L. Johnson, D. A. Borca-Tasciuc, R. J. Gilbert
Astrocyte Response To Nanoscale Topography On Anodized Alumina Surfaces, D. Ganguly, C. D.L. Johnson, D. A. Borca-Tasciuc, R. J. Gilbert
Chemical and Biochemical Engineering Faculty Research & Creative Works
The Astrocytes are one of the most important and abundant resident glial cells of the central nervous system (CNS). They play a critical role in the foreign body response, by participating in the formation of the glial scar sunouncling implants. As part of the effort to minimize the foreign body response, biomaterials strategies einployiug engineered surfaces topographies are being explored. In this context, we have investigated the response of astrocytes to surface topography of alumiua, a material used in CNS applications. Specifically, astrocytes were seeded oil alumina surfaces with nanopores 20 nm and 100 nm in diameter, respectively. Pore-free alumina …
Effects Of Strontium Substitution On Bioactivity Of Hydroxyapatite, Chokchai Yatongchai, Lana M. Placek, Mark R. Towler, Anthony W. Wren
Effects Of Strontium Substitution On Bioactivity Of Hydroxyapatite, Chokchai Yatongchai, Lana M. Placek, Mark R. Towler, Anthony W. Wren
Chemical and Biochemical Engineering Faculty Research & Creative Works
Effect of strontium (Sr) substitution on bioactivity of hydroxyapatite (HA) was investigated. The substitution of Sr2+ for Ca2+ in the HA lattice increases biodegradability of Sr-substituted HA (Sr-HA) and accelerates the formation of apatite crystals on the Sr-HA surface. Moreover, the dissolution products from HA and Sr-HA samples are not cyto-toxic.
Understand And Analyzing Learning Objects: A Foundation For Long-Term Substantiality And Use For E-Learning, Hsin-Liang Chen, Joi L. Moore, Weichao Chen
Understand And Analyzing Learning Objects: A Foundation For Long-Term Substantiality And Use For E-Learning, Hsin-Liang Chen, Joi L. Moore, Weichao Chen
University Libraries Faculty Research & Creative Works
In this paper, we investigated the genres of learning objects (LOs) within eight e-learning courses that provide boating safety instruction in the United States. Guided by findings from our literature review, five genres of LOs emerged during the analysis, including interactive and non-interactive graphics, interactive and non-interactive animations, and interactive text feedback. We surveyed the use of each genre of LOs within the courses and found that more non-interactive LOs than interactive LOs were adopted. Also, interactive text feedback was the most popular interactive genre available for seven courses. In our discussion, we explore potential management mechanisms of LOs in …
Missouri S&T Magazine Summer 2015, Missouri S&T Marketing And Communications Department, Miner Alumni Association
Missouri S&T Magazine Summer 2015, Missouri S&T Marketing And Communications Department, Miner Alumni Association
Missouri S&T Magazine
No abstract provided.
Scope And Challenges In Light Fidelity(Lifi) Technology In Wireless Data Communication, Shubham Chatterjee, Shalabh Agarwal, Asoke Nath
Scope And Challenges In Light Fidelity(Lifi) Technology In Wireless Data Communication, Shubham Chatterjee, Shalabh Agarwal, Asoke Nath
Computer Science Faculty Research & Creative Works
Light Emitting Diodes (LED) are used in different areas of everyday life. The advantage of this device is that in addition to their lightening capabilities, it can be used for data transmissions as well. In the present study, the authors have made an exhaustive study on technology of Li-Fi and its applications in transferring data from one computer to another computer. The authors have also made study on advantages as well as disadvantages of using Li- Fi in transferring data from one computer to another computer. The massive use of Li-Fi may solve some bottleneck of data transmission in Wi-Fi …
Review Of The Book "Les Français Sous Les Bombes Alliées 1940-1945," By Andrew Knapp, Shannon Lee Fogg
Review Of The Book "Les Français Sous Les Bombes Alliées 1940-1945," By Andrew Knapp, Shannon Lee Fogg
History and Political Science Faculty Research & Creative Works
No abstract provided.
Impact Of Modified Inlets On Residence Times In Baffled Tanks, Jeremy S. Carlston, Subhas Karan Venayagamoorthy
Impact Of Modified Inlets On Residence Times In Baffled Tanks, Jeremy S. Carlston, Subhas Karan Venayagamoorthy
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Sharp inlets, although prevalent, tend to reduce mixing efficiency in hydraulic contact tanks by affecting fluid and scalar transport throughout the entire system. Superior inlets are often not an option because of the prohibitive cost of upgrading preexisting tanks. To remedy this, seven inexpensive yet easily implemented attachments to a sharp inlet were tested on a full-scale, baffled, prototypical contact tank. Cumulative residence time distributions of a conservative, passive scalar were obtained for each attachment to assess their performance. A study using computational fluid dynamics of the same tank with the various attachments was then performed to strengthen the empirical …
Real-Time Monitoring Of Laser Powder Bed Fusion Process Using High-Speed X-Ray Imaging And Diffraction, C. Zhao, K. Fezzaa, R. W. Cunningham, H. Wen, F. De Carlo, Lianyi Chen, A. D. Rollett, T. Sun
Real-Time Monitoring Of Laser Powder Bed Fusion Process Using High-Speed X-Ray Imaging And Diffraction, C. Zhao, K. Fezzaa, R. W. Cunningham, H. Wen, F. De Carlo, Lianyi Chen, A. D. Rollett, T. Sun
Mechanical and Aerospace Engineering Faculty Research & Creative Works
No abstract provided.
Impact Of Stoichiometry On Structural And Optical Properties Of Sputter Deposited Multicomponent Tellurite Glass Films, Okechukwu Ogbuu, Qingyang Du, Hongtao Lin, Lan Li, Yi Zou, Erick Koontz, Charmayne Smith (Lonergan), Sylvain Danto, Kathleen Richardson, Juejun Hu
Impact Of Stoichiometry On Structural And Optical Properties Of Sputter Deposited Multicomponent Tellurite Glass Films, Okechukwu Ogbuu, Qingyang Du, Hongtao Lin, Lan Li, Yi Zou, Erick Koontz, Charmayne Smith (Lonergan), Sylvain Danto, Kathleen Richardson, Juejun Hu
Materials Science and Engineering Faculty Research & Creative Works
Multicomponent TeO2-Bi2O3-ZnO (TBZ) glass thin films were prepared using RF magnetron sputtering under different oxygen flow rates. The influences of oxygen flow rate on the structural and optical properties of the resulting thin films were investigated. We observed that thin films sputtered in an oxygen-rich environment are optically transparent while those sputtered in an oxygen-deficient environment exhibit broadband absorption. The structural origin of the optical property variation was studied using X-ray diffraction, X-ray photoelectron spectroscopy, Raman Spectroscopy, and transmission electron microscopy which revealed that the presence of under-coordinated Te leads to the observed optical …
Chemical Oxidative Polymerization, Optical, Electrochemical And Kinetic Studies Of 8-Amino-2-Naphthol, Fatih Dogan, Ismet Kaya, Ali Bilici, Mehmet Yildirim
Chemical Oxidative Polymerization, Optical, Electrochemical And Kinetic Studies Of 8-Amino-2-Naphthol, Fatih Dogan, Ismet Kaya, Ali Bilici, Mehmet Yildirim
Materials Science and Engineering Faculty Research & Creative Works
Here the polymerization of 8-amino-2-naphthol (AN) is reported without use of an additional external template, surfactants or functional dopants. For this, NaOCl and hydrochloride acid solution (1.0 M) were used as oxidant and reaction medium, respectively. The structure of oligomer was elucidated by FT-IR, UV–vis and 1 H-NMR techniques. The number average molecular weight of oligomer was found to be 2200Da with a polydispersity index of 1.4 by size exclusion chromatography. This oligomer exhibited a multicolor emission behavior as it was excited at different wavelengths. Redox states were clarified by cyclic voltammetry (CV) technique and the relationship between anodic/cathodic peak …
Imaging An Aligned Polyatomic Molecule With Laser-Induced Electron Diffraction, Michael G. Pullen, Benjamin Wolter, Anh-Thu Le, Matthias Baudisch, Michael Hemmer, Arne Senftleben, Claus Dieter Schroeter, Joachim Ullrich, Robert Moshammer, C. D. Lin, Jens Biegert
Imaging An Aligned Polyatomic Molecule With Laser-Induced Electron Diffraction, Michael G. Pullen, Benjamin Wolter, Anh-Thu Le, Matthias Baudisch, Michael Hemmer, Arne Senftleben, Claus Dieter Schroeter, Joachim Ullrich, Robert Moshammer, C. D. Lin, Jens Biegert
Physics Faculty Research & Creative Works
Laser-induced electron diffraction is an evolving tabletop method that aims to image ultrafast structural changes in gas-phase polyatomic molecules with sub-Ångström spatial and femtosecond temporal resolutions. Here we demonstrate the retrieval of multiple bond lengths from a polyatomic molecule by simultaneously measuring the C-C and C-H bond lengths in aligned acetylene. Our approach takes the method beyond the hitherto achieved imaging of simple diatomic molecules and is based on the combination of a 160kHz mid-infrared few-cycle laser source with full three-dimensional electron-ion coincidence detection. Our technique provides an accessible and robust route towards imaging ultrafast processes in complex gas-phase molecules …
Structural Color Printing Based On Plasmonic Metasurfaces Of Perfect Light Absorption, F. Cheng, Jie Gao, T. S. Luk, Xiaodong Yang
Structural Color Printing Based On Plasmonic Metasurfaces Of Perfect Light Absorption, F. Cheng, Jie Gao, T. S. Luk, Xiaodong Yang
Mechanical and Aerospace Engineering Faculty Research & Creative Works
No abstract provided.
A Systematic Review Of Technological Advancements To Enhance Learning, Elizabeth A. Cudney, Julie Ezzell
A Systematic Review Of Technological Advancements To Enhance Learning, Elizabeth A. Cudney, Julie Ezzell
Engineering Management and Systems Engineering Faculty Research & Creative Works
Assessing student learning styles and incorporating thought-provoking activities has been a focus of research for years. Virtual technology and social media are transforming traditional classrooms into training spaces that can be tailored for individual learning patterns and personalized for different skill levels. These technological tools are not only revolutionizing the conventional lecture-based classroom but also beginning to incorporate options such as flipped and blended classrooms. Students in these nontraditional settings are given additional hands-on experience that allows them to become immersed in a variety of subjects. Flipped classrooms in particular use class time effectively by challenging students to prepare prior …
Study Of Displacement Efficiency And Flow Behavior Of Foamed Gel In Non-Homogeneous Porous Media, Yanling Wang, Jiafeng Jin, Baojun Bai, Mingzhen Wei
Study Of Displacement Efficiency And Flow Behavior Of Foamed Gel In Non-Homogeneous Porous Media, Yanling Wang, Jiafeng Jin, Baojun Bai, Mingzhen Wei
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Field trials have demonstrated that foamed gel is a very cost-effective technology for profile modification and water shut-off. However, the mechanisms of profile modification and flow behavior of foamed gel in non-homogeneous porous media are not yet well understood. In order to investigate these mechanisms and the interactions between foamed gel and oil in porous media, coreflooding and pore-scale visualization waterflooding experiments were performed in the laboratory. The results of the coreflooding experiment in non-homogeneous porous media showed that the displacement efficiency improved by approximately 30% after injecting a 0.3 pore volume of foamed gel, and was proportional to the …
Work-In-Progress: Statistics Components In A Circuits Laboratory For Ece Sophomores, Steve Eugene Watkins, Theresa M. Swift, Amardeep Kaur
Work-In-Progress: Statistics Components In A Circuits Laboratory For Ece Sophomores, Steve Eugene Watkins, Theresa M. Swift, Amardeep Kaur
Electrical and Computer Engineering Faculty Research & Creative Works
Statistics concepts are required for undergraduate curricula in electrical engineering and computer engineering (ECE). Accreditation guidelines specify that such instruction must include “applications appropriate to the program name” [ABET Criteria for Accrediting Engineering Programs, 2014-2015]. Curricula content in probability and statistics are commonly done in a stand-alone course, but additional exposure within engineering-content courses can provide great value. Many basic concepts can be introduced before the comprehensive stand-alone course. A good ECE context is an electrical circuits laboratory in which students need to understand electrical component tolerances and related design issues. Statistics-related assignments in a required, sophomore-level laboratory course are …
Entropy-Based Privacy Against Profiling Of User Mobility, Alicia Rodriguez-Carrion, David Rebollo-Monedero, Jordi Forne, Celeste Campo, Carlos Garcia-Rubio, Javier Parra-Arnau, Sajal K. Das
Entropy-Based Privacy Against Profiling Of User Mobility, Alicia Rodriguez-Carrion, David Rebollo-Monedero, Jordi Forne, Celeste Campo, Carlos Garcia-Rubio, Javier Parra-Arnau, Sajal K. Das
Computer Science Faculty Research & Creative Works
Location-based services (LBSs) flood mobile phones nowadays, but their use poses an evident privacy risk. The locations accompanying the LBS queries can be exploited by the LBS provider to build the user profile of visited locations, which might disclose sensitive data, such as work or home locations. The classic concept of entropy is widely used to evaluate privacy in these scenarios, where the information is represented as a sequence of independent samples of categorized data. However, since the LBS queries might be sent very frequently, location profiles can be improved by adding temporal dependencies, thus becoming mobility profiles, where location …