Engineering Commons^™

Applications Of Artificial Intelligence To Cryptography, Jonathan Blackledge, Napo Mosola

Articles

This paper considers some recent advances in the field of Cryptography using Artificial Intelligence (AI). It specifically considers the applications of Machine Learning (ML) and Evolutionary Computing (EC) to analyze and encrypt data. A short overview is given on Artificial Neural Networks (ANNs) and the principles of Deep Learning using Deep ANNs. In this context, the paper considers: (i) the implementation of EC and ANNs for generating unique and unclonable ciphers; (ii) ML strategies for detecting the genuine randomness (or otherwise) of finite binary strings for applications in Cryptanalysis. The aim of the paper is to provide an overview on …

Deep Learning For Digitized Histology Image Analysis, Sudhir Sornapudi

Doctoral Dissertations

“Cervical cancer is the fourth most frequent cancer that affects women worldwide. Assessment of cervical intraepithelial neoplasia (CIN) through histopathology remains as the standard for absolute determination of cancer. The examination of tissue samples under a microscope requires considerable time and effort from expert pathologists. There is a need to design an automated tool to assist pathologists for digitized histology slide analysis. Pre-cervical cancer is generally determined by examining the CIN which is the growth of atypical cells from the basement membrane (bottom) to the top of the epithelium. It has four grades, including: Normal, CIN1, CIN2, and CIN3. In …

A Statistically Significant Test To Evaluate The Order Or Disorder For A Binary String Of A Finite Length, Jonathan Blackledge, N. Mosola

Conference papers

—This paper addresses a basic problem in regard to the analysis of a finite binary string or bit stream (of compact support), namely, how to tell whether the string is representative of non-random or intelligible information (involving some form of periodicity, for example), whether it is the product of an entirely random process or whether it is something in between thetwo.Thisproblemhasapplicationsthatincludecryptanalysis, quantitative finance, machine learning, artificial intelligence and other forms of signal and image processing involving the general problem of how to distinguishing real noise from information embedded in noise, for example. After providing a short introductiontotheproblem,wefocusontheapplicationofinformation entropy for solving …

Applications Of Polynomial Chaos-Based Cokriging To Aerodynamic Design Optimization Benchmark Problems, Jethro Nagawkar, Leifur Leifsson, Xiaosong Du

Mechanical and Aerospace Engineering Faculty Research & Creative Works

In this work, the polynomial chaos-based Cokriging (PC-Cokriging) is applied to a benchmark aerodynamic design optimization problem. The aim is to perform fast design optimization using this multifidelity metamodel. Multifidelity metamodels use information at multiple levels of fidelity to make accurate and fast predictions. Higher amount of lower fidelity data can provide important information on the trends to a limited amount of high-fidelity (HF) data. The PC-Cokriging metamodel is a multivariate version of the polynomial chaos-based Kriging (PC-Kriging) metamodel and its construction is similar to Cokriging. It combines the advantages of the interpolation-based Kriging metamodel and the regression-based polynomial chaos …

Role Of Ergonomics In The Selection Of Stemming Plugs For Surface Mining Operations, Atta Ur Rehman, Muhammad Zaka Emad, Muhammad Usman Khan

Mining Engineering Faculty Research & Creative Works

Stemming plugs are one of the widely used accessories in surface mining operations. Stemming plugs assist conventional stemming material in gas retention and help in better fragmentation and explosive utilization. Effective use of the stemming plugs results in economic benefits and enhance the efficacy of the project. Economic and productive viability of stemming plugs have been conducted in depth by different researchers. Addition of stemming plugs to a new system requires ergonomic challenges for operators conducting drilling and blasting operation. Induction of a newer product in already established system is subject to overall positive feedback. This work investigates ergonomics of …

Exploring The Career Experiences Of Immigrant Nigerian Women Engineers, Ijeoma Lilian Ozoude

Walden Dissertations and Doctoral Studies

The contribution of immigrant Science, Technology, Engineering and Mathematics (STEM) workers in addressing the projected shortage of U.S. STEM workforce cannot be overemphasized. Despite efforts by U.S. policy makers to provide opportunities for a positive STEM experience and diversify the STEM field by increasing the number of underrepresented minorities and women via The Women and Minorities in STEM Booster Act, changes to the U.S. immigration policy towards Nigeria, including bans on immigrant visas and Diversity visas could impact recruitment of immigrant Nigerian workers in STEM. Using Kingdon’s multiple streams framework and Crenshaw’s intersectionality theory, this study explored the career experiences …

A Preliminary Investigation Of Maintenance Contributions To Commercial Air Transport Accidents, Fatima Najeeb Khan, Ayiei Ayiei, John Murray, Glenn Baxter, Graham Wild

Research outputs 2014 to 2021

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Aircraft maintenance includes all the tasks needed to ensure an aircraft’s continuing airworthiness. Accidents that result from these maintenance activities can be used to assess safety. This research seeks to undertake a preliminary investigation of accidents that have maintenance contributions. An exploratory design was utilized, which commenced with a content analysis of the accidents with maintenance contributions (n = 35) in the official ICAO accident data set (N = 1277), followed by a quantitative ex-post facto study. Results showed that maintenance contributions are involved in 2.8 ± 0.9% of ICAO official …

N Evolution And Physiochemical Structure Changes In Chars During Co-Pyrolysis: Effects Of Abundance Of Glucose In Fiberboard, Deliang Xu, Liu Yang, Ming Zhao, Yu Song, Karnowo, Hong Zhang, Xun Hu, Hongqi Sun, Shu Zhang

Research outputs 2014 to 2021

© 2020 by the authors. The simple incineration of wood-based panels (WBPs) waste generates a significant amount of NOx, which has led to urgency in developing a new method for treating the N-containing biomass residues. This work aims to examine the N evolution and physiochemical structural changes during the co-pyrolysis of fiberboard and glucose, where the percentage of glucose in the feedstock was varied from 0% to 70%. It was found that N retention in chars was monotonically increased with increasing use of glucose, achieving ~60% N fixation when the glucose accounted for 70% in the mixture. Pyrrole-N (N-5) and …

Adaptation Of Coal Mine Floor Rating (Cmfr) To Eastern U.S. Coal Mines, Sena Cicek

Graduate Theses, Dissertations, and Problem Reports (ETD)

Floor heave—the excessive deformation and failure of floor strata—is a serious problem for many underground coal mining operations in the U.S. There is an accepted floor heave design methodology developed for the Illinois basin coal mines (Gadde, 2009). However, for Eastern U.S. coal mines in the Appalachian region, there is not any systematic design method to assess floor heave potential. In order to prevent stability problems associated with floor failure and to ensure the safety of the miners in this region, a systematic and proactive method to assess the potential of floor stability that also takes the floor failure mechanisms …

Green Completion As A Mitigation For Btex Exposure In Gas Flaring: Nigeria Case Study (Exposure Assessment And Cost Model), Akintunde S. Akinyemi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Gas flaring is an essential part of the oil and gas industry safety and waste management procedures; however, it presents a potential exposure to BTEX compounds, a group of Non-Methane Volatile Organic Compounds (NMVOC), within up to a 10-mile radius of the flare point. The physical and the psychological cost of the journey to work, make employees live close to the workplace. This study examined the perceived exposure of oil and gas industry workers to possible carcinogenic emissions outside the workplace. It looked at the outcomes of the exposure to BTEX through gas flaring drawing on archival data and using …

Regional Sustainable Development Of Renewable Natural Resources Using Net Primary Productivity On A Global Scale, Saket Dubey, Ashutosh Sharma, Venkatesh Kishor Panchariya, Manish Kumar Goyal, Rao Y. Surampalli, Tian C. Zhang

Department of Civil and Environmental Engineering: Faculty Publications

Ecological Indicators 127 (2021) 107768

Detection And Thermal Stabilization Of Virus Based On Surface Properties, Xue Mi

Dissertations, Master's Theses and Master's Reports

Viral diseases take the lives of millions of people each year. The most effective methods to prevent viral disease outbreak are viral detection to reduce contact with viral pathogens and vaccines to prevent disease. To reduce the costs of the detection of viruses and improve vaccine formulation, we explored viral surface properties. The properties we have focused on are viral hydrophobicity and surface charge using chemical force microscopy (CFM). CFM is a single-particle technique that measures the adhesion force of a functionalized atomic force microscopy (AFM) probe, and in this study, a virus covalently bound to a surface. The non-enveloped …

Modeling And Optimization Of Froth Flotation Of Low-Grade Phosphate Ores: Experiments And Machine Learning, Ashraf Alsafasfeh

Doctoral Dissertations

”In this research work, bench-scale and micro-scale flotation tests were conducted to separate “minerals from silicate minerals using direct and reverse flotation approaches, respectively. Experiments were conducted at different flotation conditions including reagents’ type, reagents’ dosages, pulp’s pH, and flotation time.

In the direct flotation process, two polymers were selected to promote the depression of silicates: hybrid polyacrylamide-based polymers (Hy-PAM) and chitosan. Results indicated that the highest recovery of P₂O₅ (86.82%) was obtained when the Hy-PAM polymer was used compared with 66.7% and 40% when chitosan and commercial inorganic depressant were used, respectively. The experimental datasets obtained …

Application Of Geophysics And Remote Sensing Techniques For Economic Mineral Exploitation In Libya, Awad Abdussalam Henish Lemnifi

Doctoral Dissertations

“This study investigates crustal thickness and properties within the north central Africa region. Results obtained from 15 seismic stations belonging to the Libyan Center for Remote Sensing and Space Science are reported, in addition to 3 seismic stations publically available, using receiver functions, the first P-to-S receiver function investigation of the 410 km and 660 km depth discontinuities bounding the mantle transition zone (MTZ), and P wave tomography methods. The results from the first method show crustal thicknesses ranging from 24 km to 36 km (with uncertainties ranging between ±0.10 km and ±0.90 km). More specifically, crustal thickness ranges from …

Shock Wave Propagation Behavior At Corners And Crosscuts In Five Small-Scale Tunnel Scenarios, David Pierre Doucet

Masters Theses

"Shock wave propagation in tunnels and other enclosed environments is substantially more complicated than in an open-air or even a surface detonation. There is still much to learn about how shock wave properties change as a wave propagates in an enclosed space, such as a mine tunnel, inside of a building, or city street. The geometry of the enclosure will have a large role in the propagation of the shock wave. This means that many different tunnel designs must be studied. This work tested five different designs using a modular small-scale model. The scenarios tested were Straight-line, Single Turn, Around …

How Quality Management Has Been Impacted In The Face Of Covid-19, Eldina Siljkovic

Dissertations and Theses @ UNI

The Coronavirus pandemic has impacted many facets of the United States. This study focuses on its magnitude in comparison to prior pandemics such as Anthrax, SARS, and Ebola. In addition to this comparison its impact on Quality Management within the agricultural sector and food supply chain was also assessed. The results of these studies showcase that COVID-19 has grown exponentially in comparison to prior pandemics and will continue to do so as we enter the winter season. Agricultural equipment manufacturing companies saw a drastic decline in quarterly revenues within 2020 in comparison to 2019. Millions in net sales were lost …

Integrating Resilience Into Military Infrastructure Mission Assurance Assessments And Decision Making, John Richards

Doctoral Dissertations

“This research created the Mission Assurance Resilience Matrix, a decision framework that integrates existing infrastructure assessment methods with emerging resilience research to model resilience under uncertainty as part of a detailed infrastructure management system. This framework enables military decision makers to easily visualize deficiencies in infrastructure resilience and assess where to most efficiently allocate resources. This research further extends results by including modules on training and education as a component of the scope of work.

There are three significant contributions of this research. The first identifies the gaps of how and where modeling under uncertainty, infrastructure systems management, and resilient …

Geophysical Characteristics Of Nickel And Copper Deposits In Wadi Al Khadra Prospect, Southwestern Of Saudi Arabia, Abdulrahman Ahmed Aljabbab

Doctoral Dissertations

“Three geophysical datasets (self-potential, magnetics, and time - domain electromagnetics) were acquired at Wadi Al Khadra Ni-Cu prospect in southwest Saudi Arabia, and were processed and interpreted for the Saudi Geological Survey. The primary objectives were to map the distribution of metallic mineralization, map structures, verify the integration of the geophysical interpretations and its signatures in conjunction with boreholes information, distinguish the similarities and differences in the integrated interpretation of geophysical data, and design optimal processing and interpretation data parameters. The self-potential tool was used to map the variation in natural surface potential differences to map lateral variations in the …

Joint Simulation Of Continuous And Categorical Variables For Mineral Resource Modeling And Recoverable Reserves Calculation, Sentle Augustinus Hlajoane

Dissertations, Master's Theses and Master's Reports

Spatial variability and uncertainty of continuous variables (grade) and categorical variables (rock-types) in mineral evaluation significantly impact the economics of mining projects. The conventional approach of simulating grades using deterministic rock- types is problematic since spatial variability, and uncertainty of grades at rock-type contacts are not well captured in deposits where the grade changes gradually between rock-types. Therefore, jointly simulating these variables can improve confidence (reduce uncertainty) in a resource model. Also, resource classification and recoverable reserve calculation can significantly improve the understanding of the deposit and its economic viability. This research utilized the Plural-Gaussian geostatistical simulation to jointly simulate …

Increasing Access To Pv Technology Through Sustainable Racking: A Review Of Existing Literature And Ground Mounted Fixed Tilt Designs, And What Can Be Done Next, Parijata Prabhakara

Dissertations, Master's Theses and Master's Reports

There is a lack of literature on the structural balance of systems (BOS), also called racking, for ground mount, fixed-tilt solar PV systems. Literature that exists discusses mostly rooftop racking and installations, additional wind loading, and weight considerations imposed on roofs, and little guidance is provided in building codes. The lack of peer-reviewed guidance on design requirements for domestic and large-scale application solar PV racking systems leaves most consumers relying on expensive, patented, off-the-shelf hardware. As PV cell technology and module costs have improved, we can start to focus on PV BOS improvements (particularly racking) and move towards sustainable designs …

Unsteady Aerodynamic Analysis Of Wind Harvesting Aircraft, Judd Mehr, Eduardo Alvarez, Andrew Ning

Faculty Publications

Airborne Wind Energy (AWE) technology aspires to provide increased options for wind energy harvesting. This includes increased feasibility for temporary and remote installations, as well as the ability to operate at wind speeds both lower and higher than traditional turbines. Additionally, the hope is to be able to produce these extensions of wind energy technology at a lower cost than conventional technologies. As AWE technology is still in its infancy, however, there is very little published information concerning the aerodynamic details of the technology. We have created a set of aerodynamic analysis tools which we apply to wind harvesting aircraft, …

การประมาณปริมาตรของมันสำปะหลังโดยใช้กล้อง Rgb-D, ชนิกานต์ บัญชาจารุรัตน์

Chulalongkorn University Theses and Dissertations (Chula ETD)

มันสำปะหลังเป็นพืชที่ปลูกง่ายและปลูกเป็นจำนวนมากในประเทศไทย เครื่องมือที่เกี่ยวข้องในการตรวจวัดคุณภาพมันสำปะหลังหลังการเก็บเกี่ยวจนไปถึงก่อนแปรรูปที่ใช้ในปัจจุบันเป็นเครื่องมือที่ใช้หลักการวัดทางกลพื้นฐานและใช้ความรู้สึกของผู้ประเมินร่วมด้วย ทำให้มีโอกาสที่จะได้ผลประเมินที่ไม่เป็นความจริง วิทยานิพนธ์นี้เสนอแนวทางการตรวจวัดคุณภาพมันสำปะหลังในห่วงโซ่อุปทานโดยใช้กล้อง Kinect ซึ่งเป็นกล้อง RGB-D ถ่ายรูปภาพของหัวมันสำปะหลังเพื่อหาปริมาตรของมันสำปะหลัง การศึกษาทำโดยถ่ายภาพมันสำปะหลังพันธุ์เกษตรศาสตร์ 50 จำนวน 90 ตัวอย่างแล้วนำมาวิเคราะห์หาปริมาตรด้วยโปรแกรม MATLAB และใช้วิธีการประมาณปริมาตรมันสำปะหลัง 2 วิธีได้แก่ การประมาณปริมาตรโดยใช้ Depth image และการประมาณปริมาตรโดยใช้ Point Cloud image ทั้งสองวิธีการนี้มีพื้นฐานมาจากการหาปริมาตรของรูปทรงเรขาคณิต ผลการหาปริมาตรของมันสำปะหลังจากการประมาณด้วยวิธีการ depth image และวิธีการ point cloud image เมื่อนำมาพล็อตกับปริมาตรของมันสำปะหลังที่ได้จากวิธีการแทนที่น้ำให้ค่าความคลาดเคลื่อน RMSE เท่ากับ 66.94 มิลลิลิตรและ 41.4 มิลลิลิตร หรือคิดเป็นร้อยละ 21.12 และ 13.06 ตามลำดับเมื่อเทียบกับค่าเฉลี่ยของปริมาตรของหัวมันสำปะหลังจากวิธีการแทนที่น้ำ และค่า R-squared ที่ได้จากการประมาณทั้งสองวิธีมีค่า 0.9561 และ 0.9626 ดังนั้นจึงสรุปได้ว่าการประมาณปริมาตรหัวมันสำปะหลังด้วยวิธีการใช้รูป point cloud จะดีกว่าจากค่า R-squared ที่มากกว่าและค่า RMSE ที่น้อยกว่า ปริมาตรของมันสำปะหลังที่ประมาณด้วยรูปถ่ายนี้สามารถนำไปประยุกต์หาเปอร์เซ็นต์แป้งมันสำปะหลังได้

Development Of Efficient Waste Management System For Guwahati City, Prantar Jyoti Talukdar

Chulalongkorn University Theses and Dissertations (Chula ETD)

As on today, in view of the exponential increase of population, fast urbanisation, technical advancements etc., globally, the waste management is becoming a subject of great concern. Apart from dealing with waste only, any waste management system has to encompass many other variants, including - environments, pollution, public health & hygiene, local eco-system etc. So, it is difficult to frame a common global policy or a country’s specific policy to meet all the requirements of the local service providers and customers. Preferentially, any waste management system need to be developed as per the requirements of the local endeavours. In this …

Resource Ecologies, Political Economies And The Ethics Of Audio Technologies In The Anthropocene, Eliot Bates

Publications and Research

Understanding how recorded and amplified stage musics contribute towards producing the Anthropocene necessitates attending to complex transnational flows of material, capital and labor, and how they coalesce into technological objects. This is complicated by the wide array of sites, practices and knowledges involved during various stages of the production process, from initial resource extraction, to smelting, component manufacturing, technology assembly, and distribution. To develop a suitable technological ethics, and to understand what happens to environments and to human, animal and plant lifeworlds, requires one to resist abstraction and undertake a global accounting of resource ecologies with recourse to planetary-scale political …

Post-Supernatural Cultures: There And Back Again, Wesley J. Wildman, F. Leron Shults, Saikou Y. Diallo, Ross Gore, Justin Lane

VMASC Publications

The abandonment of supernatural religious beliefs and rituals seems to occur quite easily in some contexts, but post-supernaturalist cultures require a specific set of conditions that are difficult to produce and sustain on a large scale and thus are historically rare. Despite the worldwide resurgence of supernaturalist religion, some subcultures reliably produce people who deny the existence of supernatural entities. This social phenomenon has evoked competing explanations, many of which enjoy empirical support. We synthesize six of the most influential social-science explanations, demonstrating that they provide complementary perspectives on a complex causal architecture. We incorporate this theoretical synthesis into a …