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Input Space Dependent Controller For Civil Structures Exposed To Multi-Hazard Excitations, Liang Cao, Simon Laflamme, Jonathan Hong, Jacob Dodson 2018 Lehigh University

Input Space Dependent Controller For Civil Structures Exposed To Multi-Hazard Excitations, Liang Cao, Simon Laflamme, Jonathan Hong, Jacob Dodson

Civil, Construction and Environmental Engineering Publications

A challenge in the control of civil structures exposed to multiple types of hazards is in the tuning of control parameters to ensure a prescribed level of performance under substantially different excitation dynamics, which could be considered as largely uncertain. A solution is to leverage data driven control algorithms, which, in their adaptive formulation, can self-tune to uncertain environments. The authors have recently proposed a new type of data-driven controller, termed input space dependent controller (ISDC), that has the particularity to adapt its input space in real-time to identify key measurements that represent the essential dynamics of the system. Previous ...


Bandwidth Optimal Data/Service Delivery For Connected Vehicles Via Edges, Deepak Gangadharan, Oleg Sokolsky, Insup Lee, BaekGyu Kim, Chung-Wei Lin, Shinichi Shiraishi 2018 University of Pennsylvania

Bandwidth Optimal Data/Service Delivery For Connected Vehicles Via Edges, Deepak Gangadharan, Oleg Sokolsky, Insup Lee, Baekgyu Kim, Chung-Wei Lin, Shinichi Shiraishi

Departmental Papers (CIS)

The paradigm of connected vehicles is fast gaining lot of attraction in the automotive industry. Recently, a lot of technological innovation has been pushed through to realize this paradigm using vehicle to cloud (V2C), infrastructure (V2I) and vehicle (V2V) communications. This has also opened the doors for efficient delivery of data/service to the vehicles via edge devices that are closer to the vehicles. In this work, we propose an optimization framework that can be used to deliver data/service to the connected vehicles such that a bandwidth cost objective is optimized. For the first time, we also integrate a ...


Systems Engineering Analysis For Optimum Selection Protocol For Thermal Expansion Measurement Of A Carbon Fiber Reinforced Composite Tube, Ronald Uchimiya 2018 Loyola Marymount University

Systems Engineering Analysis For Optimum Selection Protocol For Thermal Expansion Measurement Of A Carbon Fiber Reinforced Composite Tube, Ronald Uchimiya

LMU/LLS Theses and Dissertations

A material’s Coefficient of Thermal Expansion (CTE) is a valuable physical property, particularly for structural fiber reinforced composites that are routinely used in satellite/aerospace applications. Satellite space structures are routinely designed with a high degree of dimensional and thermal stability. Designing and verifying for near zero CTE performance is a common design requirement. The CTE is routinely a physical property with known values for common materials. However, the strength, stiffness and CTE properties on a multi-ply graphite fiber reinforced laminate composite can be tailored to specific engineering requirements. Because of this, a method of verification (testing) is routinely ...


A Computational Analysis Of The Aerodynamics And Aeroacoustics Of Jets With Fluid Injection, Marco Coderoni 2018 Embry-Riddle Aeronautical University

A Computational Analysis Of The Aerodynamics And Aeroacoustics Of Jets With Fluid Injection, Marco Coderoni

Dissertations and Theses

A detailed numerical analysis of fluidic injection as a tool to reduce noise emission is presented here. The noise reduction strategy, developed at the Pennsylvania State University, is based on injectors that blow air into the diverging section of the nozzle to emulate the effect of interior corrugation on the jet plume. The advantage is that the injection can be activated during takeoff and turned o_ during other phases of flight so that performance is not affected. Numerical simulations are performed on a military-style nozzle based on the GE F400-series engines, with a design Mach number of 1:65, for ...


A Computational Fluid Dynamics Study On The Aerodynamic Performance Of Ram-Air Parachutes, Angelo A. Fonseca Pazmiño 2018 Embry-Riddle Aeronautical University

A Computational Fluid Dynamics Study On The Aerodynamic Performance Of Ram-Air Parachutes, Angelo A. Fonseca Pazmiño

Dissertations and Theses

The modeling of a ram-air parachute presents challenges in the prediction of the inflight geometry, as there is a strong interaction between the flow field and parachute structure. This thesis presents the development of a CAD design and CFD methodology to the simulation of ram-air parachutes in steady-state conditions. Starting from a 2D rib drawing, methods were developed to approximate the 3D geometry and efficiently model the parachute as a rigid and impermeable body. The use of distortions was implemented on a 2D, pseudo-2D, and 3D model to enhance their behavior during a real flight. The SST turbulence model was ...


Biomass-Derived Renewable Energy: Prospective Pathways And Key Barriers To Advanced Bio-Fuels, Mohammad Sadra Sharifi 2018 Utah State University

Biomass-Derived Renewable Energy: Prospective Pathways And Key Barriers To Advanced Bio-Fuels, Mohammad Sadra Sharifi

Civil and Environmental Engineering Student Research

This paper provides a short review on recent advances in production of renewable energy through thermochemical processes followed by upgrading techniques such as hydrodeoxygenation, esterification, and steam reforming. Pyrolysis, gasification, and hydrothermal liquefaction have been the main processes of interest for the production of biomass energy for the past decades. However several challenges such as high capital cost due to high energy utilization for thermal processes and hydrogen consumption make these processes less competitive with the existing fossil fuel energy. Further processing of the raw bio-oil is required to improve its fuel properties such as energy density, octane number, and ...


Experience Constructing The Artifact Genome Project (Agp): Managing The Domain's Knowledge One Artifact At A Time, Cinthya Grajeda, Laura Sanchez, Ibrahim Baggili, Devon R. Clark, Frank Breitinger 2018 University of New Haven

Experience Constructing The Artifact Genome Project (Agp): Managing The Domain's Knowledge One Artifact At A Time, Cinthya Grajeda, Laura Sanchez, Ibrahim Baggili, Devon R. Clark, Frank Breitinger

Electrical & Computer Engineering and Computer Science Faculty Publications

While various tools have been created to assist the digital forensics community with acquiring, processing, and organizing evidence and indicating the existence of artifacts, very few attempts have been made to establish a centralized system for archiving artifacts. The Artifact Genome Project (AGP) has aimed to create the largest vetted and freely available digital forensics repository for Curated Forensic Artifacts (CuFAs). This paper details the experience of building, implementing, and maintaining such a system by sharing design decisions, lessons learned, and future work. We also discuss the impact of AGP in both the professional and academic realms of digital forensics ...


Preparation And Characterization Of Functionalized Heparin-Loaded Poly-Ɛ-Caprolactone Fibrous Mats To Prevent Infection With Human Papillomaviruses, Daniela Gonzalez, Jorge Ragusa, Peter C. Angeletti, Gustavo F. Larsen 2018 University of Nebraska-Lincoln

Preparation And Characterization Of Functionalized Heparin-Loaded Poly-Ɛ-Caprolactone Fibrous Mats To Prevent Infection With Human Papillomaviruses, Daniela Gonzalez, Jorge Ragusa, Peter C. Angeletti, Gustavo F. Larsen

Chemical and Biomolecular Engineering -- All Faculty Papers

In this study, heparin-loaded poly-ε-caprolactone (PCL) fibrous mats were prepared and characterized based on their physical, cytotoxic, thermal, and biological properties. The main objective of the work described here was to test the hypothesis that incorporation of heparin into a PCL carrier could serve as bio-compatible material capable of inhibiting Human Papillomavirus (HPV) infection. The idea of firmly anchoring heparin to capture soluble virus, vs. a slow heparin release to inhibit a virus in solution was tested. Thus, one material was produced via conventional heparin matrix encapsulation and electrohydrodynamic fiber processing in one step. A second type of material was ...


Investigation Of The Skin Effect In Alternating Currents, Matthew Liang 2018 School of Science and Technology Singapore

Investigation Of The Skin Effect In Alternating Currents, Matthew Liang

The International Student Science Fair 2018

My research is on the investigation of the skin effect in alternating currents. The skin effect is when an alternating current tends to flow on the surface of the conductor, such that the current density is highest near the surface, and decreases with greater depths in the conductor. This is due to the alternating current inducing changing magnetic fields, which in turn induces currents that oppose the original flow of current, resisting the current flowing through the centre the most. This reduces the effective cross-sectional area of the conductor and increases the resistance, causing increased power losses. This effect becomes ...


Smart Vertical Farm System (Svfs), Sarasit Sirawattanakul 2018 Chulalongkom University

Smart Vertical Farm System (Svfs), Sarasit Sirawattanakul

The International Student Science Fair 2018

The unremitting trends of increasing population, urbanization, diminishing water supply, and continuing climate change have contributed to declining stocks of arable land per person. Land available for farming is shrinking, and the demand for food is growing. All of these lead to food insecurity. For the first version of Smart Vertical Farm System is designed to increase food productions by an automatic system. It built with shelves which support soil and hydroponic system, stacked vertically. The system first shovels the soil in the tray and sews the seeds. There is also additional watering system. The hydroponic parts are on the ...


Energy Conversion System For Travelers (Ecost), Thipok Bovornratanaraks 2018 Chulalongkorn University Demonstration Secondary School

Energy Conversion System For Travelers (Ecost), Thipok Bovornratanaraks

The International Student Science Fair 2018

We have innovated “The Energy Conversion System for Travelers” or the ECoST. With the fact that most travelers have wheeled cabin-bags, whilst walking, the wheels will rotate so why don’t we harvest electricity from this kinetic energy? We thus install our innovation, the ECoST, to the bag to generate electricity from the spinning wheels. The electricity is then kept in the storage unit and ready to charge your empty battery devices in an emergency case via a USB port. To make life easy, our ECoST was designed to replicate the power bank charging method; therefore, we can charge it ...


Solar-Powered Bushfire Detection Mechanism, Aryaman Sud 2018 Queensland Academy SMT

Solar-Powered Bushfire Detection Mechanism, Aryaman Sud

The International Student Science Fair 2018

This project designed a prototype preventative measure for heat-induced disasters like bushfires and general home fires. The motivation for this project was the loss of life and property due to wildfire in rural Australia. The micro-controller will send an alert message and sound an alarm when the temperature value exceeds or equals the set temperature of . It is programmed using the programming language embedded ‘C’. Comprising of a solar panel, siren, temperature sensor and a Bluetooth module, this eco-friendly device can provide digitalised warnings to homes and farms where protection matters most.

Simplistic programming using the KEIL IDE software in ...


Feco2o4 As An Anode Material For Lithium Ion Batteries, Chelsea Wong 2018 National Junior College

Feco2o4 As An Anode Material For Lithium Ion Batteries, Chelsea Wong

The International Student Science Fair 2018

Lithium ion batteries (LIBs) are commonly found in many portable electronic appliances due to their ability to be rechargeable. Currently, commercial anodes in Li-ion batteries (graphite) have a theoretical capacity of around 372 mAh/g, while FeCo2O4 that will be investigated as the anode material has a theoretical capacity of 901.985mAh/g, more than double of the current commercial anode’s capacity. Earlier work done by Sharma et al also showed that FeCo2O4 has a very promising initial capacity of 827mAh/g. As such, the engineering goal is to produce a battery that will have a higher capacity than ...


Using Eeg-Validated Music Emotion Recognition Techniques To Classify Multi-Genre Popular Music For Therapeutic Purposes, Dejoy Shastikk Kumaran 2018 NUS High School of Mathematics and Science

Using Eeg-Validated Music Emotion Recognition Techniques To Classify Multi-Genre Popular Music For Therapeutic Purposes, Dejoy Shastikk Kumaran

The International Student Science Fair 2018

Music is observed to possess significant beneficial effects to human mental health, especially for patients undergoing therapy and older adults. Prior research focusing on machine recognition of the emotion music induces by classifying low-level music features has utilized subjective annotation to label data for classification. We validate this approach by using an electroencephalography-based approach to cross-check the predictions of music emotion made with the predictions from low-level music feature data as well as collected subjective annotation data. Collecting 8-channel EEG data from 10 participants listening to segments of 40 songs from 5 different genres, we obtain a subject-independent classification accuracy ...


Synthesis Of Double Network Hydrogels Which Can Be Shaped Freely, Natsuki Morimoto, Norie Kato 2018 Tokyo Tech High School of Science and Technology

Synthesis Of Double Network Hydrogels Which Can Be Shaped Freely, Natsuki Morimoto, Norie Kato

The International Student Science Fair 2018

Double network (DN) hydrogels have specific characters such as flexibility and high mechanical strength. They are expected to use biomaterials such as artificial cartilages and meniscuses. The purpose of this study is to synthesize DN gels which can be shaped freely. DN gels were synthesized by polyvinyl alcohol (PVA) as a mold, 2-acrylamide-2-methylpropane sulfonic acid (AMPS) as a first monomer, N,N’-methylene-bis-acrylamide (MBAA) as a crosslinker, 2-oxoglutalic acid (OGA) as an initiator and acrylamide (AAm) as a second monomer. First, PVA (polymerization degree; 2000) was dissolved in the water and prepared to 15 % of aqueous solution. It was poured ...


An Entirely New Molecular Glue For Mof Using Unusual Structural Transformation Of A Coordination Polymer, Sukwoo Jung, Hangyeol Kim, Junseok Ahn 2018 Korea Science Academy

An Entirely New Molecular Glue For Mof Using Unusual Structural Transformation Of A Coordination Polymer, Sukwoo Jung, Hangyeol Kim, Junseok Ahn

The International Student Science Fair 2018

In this research, an entirely new molecular glue is reported. This ‘coordination polymer glue’ is synthesized from zinc metal and BDC-NPE(2,5-bis{4-[1-(4-nitrophenyl)ethylamino]butoxy}terephthalic acid). Molecular glue transforms from 1D coordination polymer to a 3D cross-linked framework, resulting in a phase change of solution to solid. The carboxylate group of this glue makes the preformed MOF bind to its framework. Therefore, when the solution of molecular glue is mixed with preformed MOF powder and heated, homogeneous and thin MOF film – MOF/ZnNPE film – is fabricated. The film is irrelevant to the kind of its substrate ...


Solar-Powered Bushfire Detection Mechanism, Aryaman Sud 2018 Queensland Academy SMT

Solar-Powered Bushfire Detection Mechanism, Aryaman Sud

The International Student Science Fair 2018

This project designed a prototype preventative measure for heat-induced disasters like bushfires and general home fires. The motivation for this project was the loss of life and property due to wildfire in rural Australia. The micro-controller will send an alert message and sound an alarm when the temperature value exceeds or equals the set temperature of . It is programmed using the programming language embedded ‘C’. Comprising of a solar panel, siren, temperature sensor and a Bluetooth module, this eco-friendly device can provide digitalised warnings to homes and farms where protection matters most.

Simplistic programming using the KEIL IDE software in ...


The Relationship Between Electrical Conductivity And Magnetically Damped Motion, Kalem Akhtar 2018 Queensland Academy SMT

The Relationship Between Electrical Conductivity And Magnetically Damped Motion, Kalem Akhtar

The International Student Science Fair 2018

Varying electrical conductivities of different, non-magnetic metals appears to affect the magnitude of magnetically damped motion. To determine the relationship between magnetic damping and conductivity an experiment was designed using different length tubes of aluminium, copper and brass. The tubes had the same diameter and similar wall thickness. A short, cylindrical neodymium magnet was dropped through the tubes of and the time for the magnet to traverse the tube was recorded using a smartphone camera. These times allowed for the terminal velocity to be calculated for each metal length and the average terminal velocity for each metal was determined. This ...


Teaching Engineering Design Through Wearable Device Design Competition (Evaluation), Elena N. Veety, Jesse S. Sur, Hannah K. Elliott, James E. Lamberth III 2018 North Carolina State University

Teaching Engineering Design Through Wearable Device Design Competition (Evaluation), Elena N. Veety, Jesse S. Sur, Hannah K. Elliott, James E. Lamberth Iii

Journal of Pre-College Engineering Education Research (J-PEER)

The Wearable Device Challenge was developed at the Nanosystems Engineering Research Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST). The Challenge is rooted in the research and innovation ecosystem of the Center and its vision: to have a transformational impact on the way doctors and patients manage wellness through wearable, self-powered health and environmental monitoring systems. At its core, the program teaches middle and high school teachers and students how to apply the engineering design process to solve real-world problems through a project-based approach. The program impacts several hundred students in North Carolina annually through real-world, relevant ...


Aftershocks In Slowly Compressed Bulk Metallic Glasses: Experiments And Theory, Louis W. McFaul, Wendelin Wright, Xiaojun Gu, Jonathan T. Uhl, Karin A. Dahmen 2018 University of Illinois at Urbana-Champaign

Aftershocks In Slowly Compressed Bulk Metallic Glasses: Experiments And Theory, Louis W. Mcfaul, Wendelin Wright, Xiaojun Gu, Jonathan T. Uhl, Karin A. Dahmen

Faculty Journal Articles

We observe two distinct interevent time patterns in the slip avalanches of compressed bulk metallic glasses (BMGs). Small slip avalanches cluster together in time, but large slip avalanches recur roughly periodically. We compare the timing patterns of BMG slip avalanches with timing patterns of earthquakes and with the predictions of a mean-field model. The time clustering of small avalanches is similar to the known time clustering of earthquake foreshocks and aftershocks.


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