Engineering Commons^™

Dynamic Risk Assessment Model Of Tianjin Vts Water Area And Its Application, Jinkai Liu

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Research On The Collision Risk Of Ships In Chengshanjiao Water Based On Svm, Ziming Li

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Analysis And Evaluation Of Maritime Traffic Risk In Circumjacent Water Of Dagushan Peninsula Of Dalian, Yuanshan Jiang

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Research On Safety Management Of Maritime Autonomous Surface Ships, Kangqun Chen

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

College Welcomes Newest Engineering Faculty | College Of Engineering, Usu College Of Engineering

College of Engineering News

The College of Engineering at Utah State University is excited to welcome 11 new faculty members.

Product Innovation Design Based On Deep Learning And Kansei Engineering, Huafeng Quan, Shaobo Li, Jianjun Hu

Faculty Publications

Creative product design is becoming critical to the success of many enterprises. However, the conventional product innovation process is hindered by two major challenges: the difficulty to capture users’ preferences and the lack of intuitive approaches to visually inspire the designer, which is especially true in fashion design and form design of many other types of products. In this paper, we propose to combine Kansei engineering and the deep learning for product innovation (KENPI) framework, which can transfer color, pattern, etc. of a style image in real time to a product’s shape automatically. To capture user preferences, we combine Kansei …

Text Enhanced Recommendation System Model Based On Yelp Reviews, Peter Kouvaris, Ekaterina Pirogova, Hari Sanadhya, Albert Asuncion, Arun Rajagopal

SMU Data Science Review

In this paper, we introduce a useful natural language model for improving recommendation systems using collaborative filtering algorithms on ordinal ratings data. Since their inception, recommendation systems have evolved from simple user-business-rating matrices to complex systems that can consume multiple dimensions. Using Yelp's competition data set, we explore extending these dimensions to include natural language by leveraging a dual neural network architecture to produce a new and improved star rating system which offers potential improvements to collaborative filtering based recommendation systems.

Enhancing Trust In The Cryptocurrency Marketplace: A Reputation Scoring Approach, Dan Freeman, Tim Mcwilliams, Sudip Bhattacharyya, Craig Hall, Pablo Peillard

SMU Data Science Review

Trust is paramount for the effective operation of any monetary system. While the distributed architecture of blockchain technology on which cryptocurrencies operate has many benefits, the anonymity of users on the blockchain has provided criminal users an opportunity to hide both their identities and illicit activities. In this paper, we present a scoring mechanism for cryptocurrency users where the scores represent users’ trustworthiness as safe or risky transactors in the cryptocurrency community. In order to distinguish law-abiding users from potential threats in the Bitcoin marketplace, we analyze historical thefts to profile transactions, classify them into risky and non-risky categories using …

Yelp’S Review Filtering Algorithm, Yao Yao, Ivelin Angelov, Jack Rasmus-Vorrath, Mooyoung Lee, Daniel W. Engels

SMU Data Science Review

In this paper, we present an analysis of features influencing Yelp's proprietary review filtering algorithm. Classifying or misclassifying reviews as recommended or non-recommended affects average ratings, consumer decisions, and ultimately, business revenue. Our analysis involves systematically sampling and scraping Yelp restaurant reviews. Features are extracted from review metadata and engineered from metrics and scores generated using text classifiers and sentiment analysis. The coefficients of a multivariate logistic regression model were interpreted as quantifications of the relative importance of features in classifying reviews as recommended or non-recommended. The model classified review recommendations with an accuracy of 78%. We found that reviews …

Evaluating Nanoshells And A Potent Biladiene Photosensitizer For Dual Photothermal And Photodynamic Therapy Of Triple Negative Breast Cancer Cells., Rachel S. Riley, Rachel K O'Sullivan, Andrea M Potocny, Joel Rosenthal, Emily S Day

Henry M. Rowan College of Engineering Departmental Research

Light-activated therapies are ideal for treating cancer because they are non-invasive and highly specific to the area of light application. Photothermal therapy (PTT) and photodynamic therapy (PDT) are two types of light-activated therapies that show great promise for treating solid tumors. In PTT, nanoparticles embedded within tumors emit heat in response to laser light that induces cancer cell death. In PDT, photosensitizers introduced to the diseased tissue transfer the absorbed light energy to nearby ground state molecular oxygen to produce singlet oxygen, which is a potent reactive oxygen species (ROS) that is toxic to cancer cells. Although PTT and PDT …

Computational Thinking And Literacy, Sharin Rawhiya Jacob, Mark Warschauer

Journal of Computer Science Integration

Today’s students will enter a workforce that is powerfully shaped by computing. To be successful in a changing economy, students must learn to think algorithmically and computationally, to solve problems with varying levels of abstraction. These computational thinking skills have become so integrated into social function as to represent fundamental literacies. However, computer science has not been widely taught in K-12 schools. Efforts to create computer science standards and frameworks have yet to make their way into mandated course requirements. Despite a plethora of research on digital literacies, research on the role of computational thinking in the literature is sparse. …

An Analysis Of Cabin Ozone Regulations, Taylor L. Pottinger, Cheryl L. Marcham

Publications

Exposure to elevated levels of ozone have been reported to be associated with complaints of discomfort such as dry mouth, eye irritation and dryness, nasal irritation coughing, and headaches. The Federal Aviation Administration (FAA) established regulatory requirements in 1980 to limit cabin ozone levels to no more than 0.25 parts per million (ppm) at any time or 0.1 ppm averaged over a 3-hour interval for any flight over four hours in length. The FAA also published an Advisory Circular (AC), AC 120-38, to provide guidance to air carriers on how to comply with these then new ozone regulations. Methods of …

Developing A New Storage Format And A Warp-Based Spmv Kernel For Configuration Interaction Sparse Matrices On The Gpu†, Mohammed Mahmoud, Mark Hoffmann, Hassan Reza

Computer Science Faculty Publications

Sparse matrix-vector multiplication (SpMV) can be used to solve diverse-scaled linear systems and eigenvalue problems that exist in numerous, and varying scientific applications. One of the scientific applications that SpMV is involved in is known as Configuration Interaction (CI). CI is a linear method for solving the nonrelativistic Schrödinger equation for quantum chemical multi-electron systems, and it can deal with the ground state as well as multiple excited states. In this paper, we have developed a hybrid approach in order to deal with CI sparse matrices. The proposed model includes a newly-developed hybrid format for storing CI sparse matrices on …

In Vivo, Real-Time Spectroscopic Assessment Of Contusion-Based Spinal Cord Injury In A Rat Model, Kyle Kelly Bishop

Theses - ALL

The goal of this study was to (1) develop a methodology for real-time, in vivo probing of chemical and physical changes in spinal cords and (2) compare these changes in the immediate aftermath of a localized contusive injury to uninjured spinal cords. Raman spectroscopy images were obtained on in vivo spinal cords that had been surgically exposed between T9 and T10. A total of six rats were studied in two n=3 groups of injured and uninjured control animals. A single 830 nm laser of 100 um round spot size was either spatially scanned across the cord or held at a …

Homotypic And Heterotypic Self-Assembly Of Claudin Family Of Tight Junction Proteins, Lisa Danielle Nguyen

Theses - ALL

Tight junctions, found in all epithelial cells, are selective barriers that restrict the diffusion of ions and molecules within the paracellular space. They are important for maintaining cell polarity as well as for compartmentalization and establishing homeostasis within the human body. Tight junctions are comprised of complex protein assemblies. Within this protein assemble are a family of transmembrane proteins known as claudins that play a crucial role in establishing the tight junction network. Claudins are also influential in controlling the tight junction permeability. When mutations or malfunctioning occurs within a claudin gene, tight junction function is impaired. Disruption of their …

Fabrication Of 3d Tissue Constructs Using Standing Post Platform, Kantaphon Suddhapas

Theses - ALL

3D tissue constructs offer a simplified model that mimics the in vivo tissues. Standing post platform has been established in this study to fabricate 3D tissues with a variety of shapes. Non-fouling PDMS molds cast from ABS templates were seeded by cell-laden collagen type I scaffolds. The scaffolds were aggregated to form the tissues within 24 hours. Human fibroblast, hiPSC-CM, and hiPSC-MSC tissue rings were successfully fabricated with this standing post platform. Ring contracture of fibroblasts and hiPSC-MSCs was observed and compared with different collagen density, different cell seeding density, and different cell culture concentration. In addition, the tissue constructs …

Measuring Atmospheric Dry Deposition To Urban Surfaces, Alexander J. Johnson

Theses - ALL

Surrogate surfaces are used to measure atmospheric dry deposition of contaminants, and are sometimes designed intentionally with simple geometry to estimate the lower limit of the flux to any surface. However, most surrogate surfaces have a small collection area: long periods of dry weather may be needed to obtain sufficient deposited contaminants to be detected and quantified, and such exposure periods may not be common in wet climates. In this study, two relatively large surrogate surfaces—disks with surface areas > 1 m2—were designed to measure dry deposition of F-, Cl-, SO42-, and NO3- in Syracuse, NY. Results indicate that good reproducibility …

Molecular Dynamics Study On The Structure, Dynamics And Stress Response Of Dilute Micellar Systems In Uniaxial Extensional Deformation, Kelechi Okoroafor

Dissertations - ALL

Micellar structures have been proposed for potential application in hydrotropy, biomimetics, dispersion and emulsification, enhanced oil recovery, detergency, templating, drug delivery, personal care products, drag reduction, nanoscale reaction vessels, therapeutic gene delivery, bio-catalysis and so on. Though several studies exist, there still remains a gap in the current knowledge on structural response of single micelles in solution to uniaxial extensional flow deformation. These knowledge gaps are possibly due to the inability of traditional experimental studies to investigate micellar properties at the time- and length-scale pertinent to self-assembly and micellar dynamics. To this end, this work aims to utilise coarse-grained molecular …

Sustainability Benefits Analysis Of Cybermanufacturing Systems, Zhengyi Song

Dissertations - ALL

Confronted with growing sustainability awareness, mounting environmental pressure, meeting modern customers’ demand and the need to develop stronger market competitiveness, the manufacturing industry is striving to address sustainability-related issues in manufacturing. A new manufacturing system called CyberManufacturing System (CMS) has a great potential in addressing sustainability issues by handling manufacturing tasks differently and better than traditional manufacturing systems. CMS is an advanced manufacturing system where physical components are fully integrated and seamlessly networked with computational processes. The recent developments in Internet of Things, Cloud Computing, Fog Computing, Service-Oriented Technologies, etc., all contribute to the development of CMS. Under the context …

A Knowledge Enriched Computational Model To Support Lifecycle Activities Of Computational Models In Smart Manufacturing, Heng Zhang

Dissertations - ALL

Due to the needs in supporting lifecycle activities of computational models in Smart Manufacturing (SM), a Knowledge Enriched Computational Model (KECM) is proposed in this dissertation to capture and integrate domain knowledge with standardized computational models. The KECM captures domain knowledge into information model(s), physics-based model(s), and rationales. To support model development in a distributed environment, the KECM can be used as the medium for formal information sharing between model developers. A case study has been developed to demonstrate the utilization of the KECM in supporting the construction of a Bayesian Network model. To support the deployment of computational models …

Breaking Symmetry: A Study Of Novel Phenomena In Asymmetric Nanoplasmonic Systems, Matthew Scott Davis

Dissertations - ALL

Offering tailorable optical properties not achievable with symmetric or periodic optical materials, chiral, weakly disordered, deterministic aperiodic, quasiperiodic and random structures make up a new wave of asymmetric optical systems demonstrating unprecedented control of light compared to their periodic counterparts in areas such as random lasing, imaging, and bio-sensing. The governing physics of asymmetric systems is, however, not as analytically intuitive and computationally straightforward as periodic or highly symmetric systems, and thus the availability of simple analytic and computational design tools has made periodic systems an attractive option for many optical applications. For example, plasmonic systems consisting of periodic arrays …

Evaluating Baseflow Recession Behavior Using The Integrated Hydrologic Model Parflow, Emily Gaub

Theses - ALL

Hydrologists have long studied the rate of streamflow recession as a means of understanding watershed properties. Historically, recession events were lumped together for analysis. However, more recent work has shown that individual recession events behave differently, and additional insights can be gained by evaluating events individually. The analysis of individual recession events has been shown to be a valuable tool for examining hydrologic processes in large watersheds, however its connection to hydrologic models has not been thoroughly explored. We used the integrated hydrologic model ParFlow to systematically explore the drivers of baseflow recession curves. Using ParFlow we demonstrated that the …

Seasonal Patterns Of Total And Methyl Mercury Concentrations In Ground And Surface Waters In Natural And Restored Freshwater Wetlands In Northern New York, Ting Wang

Theses - ALL

Among mercury species, methylmercury (MeHg) strongly bioaccumulates and biomagnifies in aquatic food chains, generally controlling the exposure that threatens human and wildlife health. Wetlands are important environments for biogeochemical transformations of Hg, as reducing conditions and wetting/drying cycles promote the production of MeHg. In recent years, nearly half of freshwater wetlands have been lost. In response, there has been an effort to restore freshwater wetlands to improve the ecosystem services they provide. Although wetlands are important landscape features that supply MeHg to downstream aquatic ecosystems, there have been few studies comparing the processing of Hg in restored wetlands with natural …

Structural Evolution Of Molybdenum Disulfide Prepared By Atomic Layer Deposition For Realization Of Large Scale Films In Microelectronic Applications, Steven Letourneau, Elton Graugnard

Materials Science and Engineering Faculty Publications and Presentations

Molybdenum disulfide (MoS₂) films are attractive materials for electronic and optoelectronic devices, but the temperatures used in the chemical vapor deposition (CVD) of these materials are too high for device integration. Recently, a low-temperature atomic layer deposition (ALD) process was demonstrated for growth of MoS₂ films at 200 °C using MoF₆ and H₂S. However, the as-deposited films were amorphous and required annealing to obtain the desired layered structure. The MoS₂ films were sulfur-deficient; however, after annealing the crystallinity improved. To study the structure of these films and the process by which they crystallize, …

Shock Tube And Mid-Ir Laser Absorption Study Of Combustion Kinetics, Shirin Jouzdani

Dissertations - ALL

This thesis focuses on the experimental characterization of the combustion properties of representative alternative fuels. Specifically, a shock tube and direct laser absorption systems are used to investigate the ignition and pyrolysis processes of target fuels. The research problem is motivated by concern about climate change and diminishing fossil fuels. There is a need to develop advanced combustion systems and use more alternative fuels. Innovative designs of combustion systems characterized by lower emissions and higher efficiencies can be facilitated by validated models of the chemical processes involved in combustion. The development of such validated models relies on extensive experimental measurements …

Hybrid Electric Distributed Propulsion For Vertical Takeoff And Landing Aircraft, Andrew Voss Welles

Dissertations - ALL

This research effort explores the interactions between aerodynamics and hybridelectric power system (HEPS) design and control for vertical takeoff and landing (VTOL) aircraft applications. Specifically, this research focuses on embedded distributed electric propulsion systems, for which the aerodynamic forces and moments are inextricably linked to power input.

This effort begins by characterizing the performance of two similar embedded propulsion systems using computational fluid dynamics (CFD). From this initial analysis, a wind tunnel model is constructed and the systems are tested across the operating conditions required to characterize the performance of a VTOL aircraft, where 0 deg ≤ α ≤ 90 …

Horizontal Integration In The Port Industry In China Challenges And Outlook, Jiren Chen

World Maritime University Dissertations

No abstract provided.

Analysis Of Shanghai Aviation Hub Logistics Competitiveness, Tuo Chen

World Maritime University Dissertations

No abstract provided.

A Digital Dilemma | College Of Engineering, Usu College Of Engineering

College of Engineering News

In the United States, we’ve accumulated an estimated 500 million specimens of animals, plants, bugs and mushrooms.

Direct Synthesis Of Radioactive Nanoparticles Involving Neutrons, Carlos Henry Castano Giraldo, Maria Camila Garcia Toro, Brian Michael Mills

Nuclear Engineering and Radiation Science Faculty Research & Creative Works

A method to synthesize radioactive nanoparticles includes the production of metallic and multimetallic nanoparticles in a single step by providing an aqueous solution of the metal precursor, and irradiating the aqueous solution thereby producing nanoparticles. The obtained nanoparticles include one or more radioactive isotopes of gold, such as 198Au and 199Au as well as radioisotopes of silver when the obtained nanoparticles are bimetallic. The aqueous solution is irradiated in a radiation field that includes neutrons and gamma rays. The radiation field may be provided by a nuclear reactor. The aqueous solution may include silver, and bimetallic nanoparticles may be produced. …