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Articles 901 - 930 of 2149
Full-Text Articles in Entire DC Network
"Returning To The Root" Of The Problem: Improving The Social Condition Of African Americans Through Science And Mathematics Education, Vanessa R. Pitts Bannister, Julius Davis, Jomo Mutegi, Latasha Thompson, Deborah Lewis
"Returning To The Root" Of The Problem: Improving The Social Condition Of African Americans Through Science And Mathematics Education, Vanessa R. Pitts Bannister, Julius Davis, Jomo Mutegi, Latasha Thompson, Deborah Lewis
Catalyst: A Social Justice Forum
The underachievement and underrepresentation of African Americans in STEM (Science, Technology, Engineering and Mathematics) disciplines have been well documented. Efforts to improve the STEM education of African Americans continue to focus on relationships between teaching and learning and factors such as culture, race, power, class, learning preferences, cultural styles and language. Although this body of literature is deemed valuable, it fails to help STEM teacher educators and teachers critically assess other important factors such as pedagogy and curriculum. In this article, the authors argue that both pedagogy and curriculum should be centered on the social condition of African Americans – …
The Global Positioning System, Brendon Baker
The Global Positioning System, Brendon Baker
Physics Capstone Projects
This research study explores the Global Positioning System (GPS), its history, and the process of discovery needed to create the most accurate GPS possible, as well as the contemporary applications of GPS technology. Starting with the first satellite in space, GPS has been a work in progress. Originally pursued by the military for improvements to military tactics, GPS has become integrated into the everyday lives of millions of people around the world. How GPS determines location is a dichotomy, with simplistic theory and complex application. Many factors go into GPS to provide a consistent, accurate location. The orbital planes the …
Swosu Research And Scholarly Activity Fair 2017, Lisa Appeddu, Cj Smith
Swosu Research And Scholarly Activity Fair 2017, Lisa Appeddu, Cj Smith
SWOSU Research and Scholarly Activity Fair Programs
Welcome to the Twenty-Fourth SWOSU Research and Scholarly Activity Fair! On display today are 158 poster presentations and 11 oral presentations, involving 314 student researchers, writers, presenters, and artists, and 47 faculty sponsors encompassing scholarly activity from the SWOSU Departments of Art, Communication, and Theatre; Biological Sciences; Business & Computer Science; Chemistry and Physics; Engineering Technology; Language & Literature; Music; Pharmaceutical Sciences; Psychology; and Social Sciences; and SWOSU School of Nursing and Allied Health Sciences. In addition, there are poster presentations from the Western Technology Center Biomedical Academy, Francis Tuttle Technology Center, El Reno Public Schools, and BlueSTEM AgriLearning …
Characterization Of The Shock Wave Structure In Water, Emilie Teitz
Characterization Of The Shock Wave Structure In Water, Emilie Teitz
Master's Theses (2009 -)
The scientific community is interested in furthering the understanding of shock wave structures in water, given its implications in a wide range of applications; from researching how shock waves penetrate unwanted body tissues to studying how humans respond to blast waves. Shock wave research on water has existed for over five decades. Previous studies have investigated the shock response of water at pressures ranging from 1 to 70 GPa using flyer plate experiments. This report differs from previously published experiments in that the water was loaded to shock pressures ranging from 0.36 to 0.70 GPa. The experiment also utilized tap …
I Would Not Plant Apple Trees If The World Will Be Wiped: Analyzing Hundreds Of Millions Of Behavioral Records Of Players During An Mmorpg Beta Test, Qatar Computing Research Institute, The State University Of New York University At Buffalo, Haewoon Kwak, Korea University
I Would Not Plant Apple Trees If The World Will Be Wiped: Analyzing Hundreds Of Millions Of Behavioral Records Of Players During An Mmorpg Beta Test, Qatar Computing Research Institute, The State University Of New York University At Buffalo, Haewoon Kwak, Korea University
Research Collection School Of Computing and Information Systems
In this work, we use player behavior during the closed beta test of the MMORPG ArcheAge as a proxy for an extreme situation: at the end of the closed beta test, all user data is deleted, and thus, the outcome (or penalty) of players' in-game behaviors in the last few days loses its meaning. We analyzed 270 million records of player behavior in the 4th closed beta test of ArcheAge. Our findings show that there are no apparent pandemic behavior changes, but some outlierswere more likely to exhibit anti-social behavior (e.g., player killing). We also found that contrary to the …
Anti-Forensic Trace Detection In Digital Forensic Triage Investigations, Kyoung Jea Park, Jung-Min Park, Eun-Jin Kim, Chang Geun Cheon, Joshua I. James
Anti-Forensic Trace Detection In Digital Forensic Triage Investigations, Kyoung Jea Park, Jung-Min Park, Eun-Jin Kim, Chang Geun Cheon, Joshua I. James
Journal of Digital Forensics, Security and Law
Anti-forensics, whether intentionally to disrupt investigations or simply an effort to make a computer system run better, is becoming of increasing concern to digital investigators. This work attempts to assess the problem of anti-forensics techniques commonly deployed in South Korea. Based on identified challenges, a method of signature-based anti-forensic trace detection is proposed for triage purposes that will assist investigators in quickly making decisions about the suspect digital devices before conducting a full investigation. Finally, a prototype anti-forensic trace detection system is given to demonstrate the practicality of the proposed method.
Environmental Applications Of Small Unmanned Aircraft Systems In Multi-Service Tactics, Techniques, And Procedures For Chemical, Biological, Radiological, And Nuclear Reconnaissance And Surveillance, Brandon B. Barnes
Theses and Dissertations
Small unmanned aircraft systems can be used for a variety of environmental applications. SUAS under 50 kg have the most utility at the tactical level and benefit from the research and development of systems currently being manufactured. Integrating chemical sensors into these systems can enhance Multi-service Tactics, Techniques, and Procedures for Chemical, Biological, Radiological, and Nuclear Reconnaissance and Surveillance. Considering the advantages and disadvantages in the fundamental science of twelve detection technologies, four types of sensors emerged as candidates for SUAS integration. Using specifications from commercial-off-the-shelf sensors, these four detection technologies (Electrochemical, Metal Oxide Semiconductor, Photoionization, and Catalytic Bead) were …
Does Society Need Imo Medalists?, Man Keung Siu
Does Society Need Imo Medalists?, Man Keung Siu
Journal of Humanistic Mathematics
With a title that sounds provocative but with no intention to embarrass the organizers and participants of the event of IMO (International Mathematical Olympiad) this article should be seen as the sharing of some thoughts on this activity, or more generally on mathematical competitions, by a teacher of mathematics who had once helped in the coaching of the first Hong Kong Team to take part in the 29th IMO held in Canberra in 1988 and in the coordination work of the 35th IMO held in Hong Kong in 1994. The author tries to look at the issue in …
Synthesis Of Complex/Multifunctional Metal (Hydr)Oxide/Graphite Oxide/Aunps Or Agnps Adsorbents And Analysis Of Their Interactions With Chemical Warfare Agents, Dimitrios A. Giannakoudakis
Synthesis Of Complex/Multifunctional Metal (Hydr)Oxide/Graphite Oxide/Aunps Or Agnps Adsorbents And Analysis Of Their Interactions With Chemical Warfare Agents, Dimitrios A. Giannakoudakis
Dissertations, Theses, and Capstone Projects
One of the most widely used chemical warfare agent (CWA) is mustard gas, which is a highly toxic blistering agent. In this study we investigated the interactions of mustard gas surrogates’ vapors on zinc and zirconium hydroxides and their composites with graphite oxide (GO) and/or Au or Ag nanoparticles. Even though a small quantity of reports about the detoxification of CWAs on metal oxides is reported in the literature, almost all of these studies are performed in the liquid phase. Both herein reported Zn(OH)2 and Zr(OH)4 showed a good adsorption performance, with the former being photoactive under visible …
Special Topic 5: Chemical Warfare, Gordon Gribble
Special Topic 5: Chemical Warfare, Gordon Gribble
Chemistry 52, Gordon Gribble lectures on Special Topics
No abstract provided.
Introduction To Special Topics, Gordon Gribble
Introduction To Special Topics, Gordon Gribble
Chemistry 52, Gordon Gribble lectures on Special Topics
No abstract provided.
Special Topic 3, Part 2: Pesticides: Herbicides, Vietnam Defoliants, And Dioxin, Gordon Gribble
Special Topic 3, Part 2: Pesticides: Herbicides, Vietnam Defoliants, And Dioxin, Gordon Gribble
Chemistry 52, Gordon Gribble lectures on Special Topics
No abstract provided.
Regulating Religious Robots: Free Exercise And Rfra In The Time Of Superintelligent Artificial Intelligence, Ignatius Michael D. Ingles
Regulating Religious Robots: Free Exercise And Rfra In The Time Of Superintelligent Artificial Intelligence, Ignatius Michael D. Ingles
Ateneo School of Law Publications
No abstract provided.
Improving The Stealthiness Of Dns-Based Covert Communication, Stephen Sheridan, Anthony Keane
Improving The Stealthiness Of Dns-Based Covert Communication, Stephen Sheridan, Anthony Keane
Conference Papers
At present, the recommended stance to take regarding Cyber Security is to assume a state of compromise. With the increase in Bring Your Own Device (BYOD), the Internet of Things (IOT) and Advanced Persistent Threats (ATPs), network boundaries have become porous and difficult to defend from external threats. Modern malware is complex and adept at making its presence hard to detect. Recent studies have shown that some malware variants are capable of using multiple covert communication channels for command and control (C2) and data exfiltration activities. Examples of this level of covert communication can be found in malware that targets …
Improved Characterization And Analysis Strategies For Uv-Lif Bioaerosol Instrumentation: Lab And Field Application, Nicole Justine Savage
Improved Characterization And Analysis Strategies For Uv-Lif Bioaerosol Instrumentation: Lab And Field Application, Nicole Justine Savage
Electronic Theses and Dissertations
Atmospheric particles of biological origin, also referred to as bioaerosols or primary biological aerosol particles (PBAP), are important to various human health and environmental systems. There has been a recent steep increase in the frequency of published studies utilizing commercial instrumentation based on ultraviolet laser/light-induced fluorescence (UV-LIF), such as the WIBS (wideband integrated bioaerosol sensor), for bioaerosol detection both outdoors and in the built environment. Significant work over several decades supported the development of these technologies, but efforts to systematically characterize the operation of new commercial sensors has remained lacking. Specifically, there are gaps in the understanding of how different …
Synthesis Of Netilmicin And Apramycin Derivatives For The Treatment Of Multidrug-Resistant Infectious Diseases, Amr Sayed Motawi Sonousi
Synthesis Of Netilmicin And Apramycin Derivatives For The Treatment Of Multidrug-Resistant Infectious Diseases, Amr Sayed Motawi Sonousi
Wayne State University Dissertations
The ever-growing bacterial resistance to existing antibiotics is alarming to humanity. Many researchers decided to revisit aminoglycosides with renewed emphasis on chemical modification as they have long been used as highly potent antibiotics for treating severe bacterial infections. The bactericidal effect of aminoglycosides is mainly due to protein synthesis inhibition by binding to the A-site of the bacterial ribosomes. However, the high potency and the broad spectrum of aminoglycosides has been outweighed by their side effects, especially ototoxicity, and by the resistance of pathogens. The goal of this research was the modification of existing aminoglycosides to develop derivatives which are …
Underground Structures, Rock Structures And Rock Mechanics From Ancient Era To The Modern Age, Ebru Akiş, Özgür Satici
Underground Structures, Rock Structures And Rock Mechanics From Ancient Era To The Modern Age, Ebru Akiş, Özgür Satici
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Usage of underground space is an old habit for human beings since ancient era. Our ancestors have used caves as a shelter for protection from the wildlife and nature, and they excavated caves to extract valuable minerals. They also used them as sanctuaries, tombs or for storage of goods. In addition, they built tunnels to be used as assault systems or to underpass fortifications during ancient warfare. Later on, tunnels were driven to supply water to the towns or to protect the towns from floods. They also built them for communication purposes. Though not knowing the exact time when they …
Distribution And Habitat Use Of The Golden Crab Chaceon Fenneri Off Eastern Florida Based On In Situ Submersible And Rov Observations And Potential For Impacts To Deep Water Coral/Sponge Habitat, John Reed, Stephanie Farrington, Charles Messing, Andre David
Distribution And Habitat Use Of The Golden Crab Chaceon Fenneri Off Eastern Florida Based On In Situ Submersible And Rov Observations And Potential For Impacts To Deep Water Coral/Sponge Habitat, John Reed, Stephanie Farrington, Charles Messing, Andre David
Marine & Environmental Sciences Faculty Articles
This study documents the distribution and habitat preferences of the golden crab, a commercially fished species, in relation to deep-sea coral/sponge ecosystems (DSCEs) at 200-900 m depths off eastern Florida. A total of 386 h of videotapes from 94 submersible and remotely operated vehicle (ROV) dives from 1999 to 2009, covering a total distance of 376 km, were reviewed and characterized for habitat type and presence of crabs. The DSCEs surveyed included Lophelia coral mounds, Miami Terrace, Pourtalès Terrace, and Tortugas Valleys. Video transect data also included environmental surveys of proposed deep-water routes for Liquid Natural Gas (LNG) pipelines, LNG …
A Serengeti Land Ethic: Deconstructing Environmental Dualism In A Critical Ecosystem, Kristyn Gorton
A Serengeti Land Ethic: Deconstructing Environmental Dualism In A Critical Ecosystem, Kristyn Gorton
Honors Program Theses
This study synthesizes information on the ecology of the Serengeti Plains biome, its landscape and human history, the ethnoscience of its indigenous populations, and the current management objectives of the Serengeti’s protected areas in order to evidence the suitability of indigenous habitat management technologies in the preservation of this ecosystem. Effects of indigenous removal include the encroachment of tsetse fly bush, reduction in grassland diversity and primary productivity, and decline in the Serengeti’s keystone species, the blue wildebeest. The models of conventional national parks and community-based conservation alternatives will be evaluated in order to demonstrate the shortcomings of an environmentally …
An Investigation Into Some Security Issues In The Dds Messaging Protocol, Thomas White, Michael N. Johnstone, Matthew Peacock
An Investigation Into Some Security Issues In The Dds Messaging Protocol, Thomas White, Michael N. Johnstone, Matthew Peacock
Australian Information Security Management Conference
The convergence of Operational Technology and Information Technology is driving integration of the Internet of Things and Industrial Control Systems to form the Industrial Internet of Things. Due to the influence of Information Technology, security has become a high priority particularly when implementations expand into critical infrastructure. At present there appears to be minimal research addressing security considerations for industrial systems which implement application layer IoT messaging protocols such as Data Distribution Services (DDS). Simulated IoT devices in a virtual environment using the DDSI-RTPS protocol were used to demonstrate that enumeration of devices is possible by a non-authenticated client in …
Threat Intelligence In Support Of Cyber Situation Awareness, Billy Paul Gilliam
Threat Intelligence In Support Of Cyber Situation Awareness, Billy Paul Gilliam
Walden Dissertations and Doctoral Studies
Despite technological advances in the information security field, attacks by unauthorized individuals and groups continue to penetrate defenses. Due to the rapidly changing environment of the Internet, the appearance of newly developed malicious software or attack techniques accelerates while security professionals continue in a reactive posture with limited time for identifying new threats. The problem addressed in this study was the perceived value of threat intelligence as a proactive process for information security. The purpose of this study was to explore how situation awareness is enhanced by receiving advanced intelligence reports resulting in better decision-making for proper response to security …
Analysis Of Novel Cyanide Antidote Dimethyl Trisulfide For Pharmacokinetic Studies, And Sulfur Mustard Metabolites For Identification Of Biomarker Of Inhaled Dose, Erica Manandhar
Electronic Theses and Dissertations
Cyanide poisoning by accidental or intentional exposure poses a severe health risk. The current FDA approved antidotes for cyanide poisoning can be effective, but each suffers from specific major limitations. Dimethyl trisulfide (DMTS), a sulfur donor that detoxifies cyanide by converting it into thiocyanate, is a promising next generation cyanide antidote. Although a validated analytical method to analyze DMTS is not currently available from any matrix, one will be vital for the approval of DMTS as a therapeutic agent against cyanide poisoning. Hence, a stir bar sorptive extraction (SBSE) gas chromatography – mass spectrometry (GC-MS) method was developed and validated …
A Zooarchaeological And Geochemical Analysis Of The Faunal Remains From The Tripolye Site Verteba Cave, Ukraine, Sarah Heins Ledogar
A Zooarchaeological And Geochemical Analysis Of The Faunal Remains From The Tripolye Site Verteba Cave, Ukraine, Sarah Heins Ledogar
Legacy Theses & Dissertations (2009 - 2024)
This study combines zooarchaeological and geochemical analyses to examine the use of animals excavated from Verteba Cave (Ukraine), a unique archaeological site associated with the Eneolithic Tripolye culture (4900 – 2900 BC). Verteba Cave is atypical among Tripolye sites because it is located within a cave, and contains a large amount of human skeletal remains. Although research has been focused on understanding Tripolye subsistence economy, the strategies engaged for procuring domestic animals and the role of animal products in Tripolye life has been underexplored. The role of animals in social behaviors (i.e., mortuary practices, feasting) has not yet been thoroughly …
From The National Cyber Maturity To The Cyber Resilience: The Lessons Learnt From The Efforts Of Turkey, Bilge Karabacak, Unal Tatar
From The National Cyber Maturity To The Cyber Resilience: The Lessons Learnt From The Efforts Of Turkey, Bilge Karabacak, Unal Tatar
All Faculty and Staff Scholarship
In this paper, the details of critical infrastructure protection program of United States of America are shared by taking the cyber resilience into account. The academic and institutional studies on the concepts of cyber maturity, critical infrastructure protection program and cyber resilience are explained in detail. By the help of these studies and national efforts, the relations among these concepts are proposed. The key components of a cyber security strategy and action plan for a cyber resilient society is proposed by taking these three concepts into account. As the final step, the recent cyber security efforts of Turkey is shared …
A New Approach To Pulse Deinterleaving Based On Adaptive Thresholding, Mostafa Bagheri, Mohammad Hossein Sedaaghi
A New Approach To Pulse Deinterleaving Based On Adaptive Thresholding, Mostafa Bagheri, Mohammad Hossein Sedaaghi
Turkish Journal of Electrical Engineering and Computer Sciences
Since histogram-based methods are formed by some simple differences, they are very desirable for deinterleaving. However, their main imperfection concerns recognizing complex pulse repetition interval (PRI) patterns like jittered and staggered ones.In this paper, we present new thresholds to detect jittered and staggered PRI from histogram-based methods even in complex circumstances such as noisy time of arrival (TOA), complex PRI patterns, and large missing pulses. Simulation results demonstrate that our method can detect and extract constant, jittered, and staggered PRI correctly. Moreover, the method is proved to be considerably robust and reliable at a missing pulses rate up to 30%.
Analysis Of Affective State As Covariate In Human Gait Identification, Kofi Agyemang Adumata
Analysis Of Affective State As Covariate In Human Gait Identification, Kofi Agyemang Adumata
Walden Dissertations and Doctoral Studies
There is an increased interest in the need for a noninvasive and nonintrusive biometric identification and recognition system such as Automatic Gait Identification (AGI) due to the rise in crime rates in the US, physical assaults, and global terrorism in public places. AGI, a biometric system based on human gait, can recognize people from a distance and current literature shows that AGI has a 95.75% success rate in a closely controlled laboratory environment. Also, this success rate does not take into consideration the effect of covariate factors such as affective state (mood state); and literature shows that there is a …
Tonga’S Organisational Vulnerability To Social Engineering, Raymond Lutui, Viliami Fe’Aomoeata
Tonga’S Organisational Vulnerability To Social Engineering, Raymond Lutui, Viliami Fe’Aomoeata
Australian Information Security Management Conference
Tonga is a small developing island in the south pacific and ICT is still in its early stages. In this paper we ask the questions, what is social engineering and who is this social engineer, what are the threats to Tonga, how can these threats be identified and which countermeasures can be taken to mitigate the risk of social engineering? The answers to these questions will lead to a social engineering risk management framework to make the risks of social engineering more transparent and help organisations implement mitigating controls against social engineering. The study was performed in four chosen organisations …
A Review Of Data Breaches And Losses That Occurred From Laptops That Were Stolen Or Otherwise Misplaced In 2015 And 2016, Samuel Griffith Wakeling, Peter Hannay, Zubair Baig
A Review Of Data Breaches And Losses That Occurred From Laptops That Were Stolen Or Otherwise Misplaced In 2015 And 2016, Samuel Griffith Wakeling, Peter Hannay, Zubair Baig
Australian Information Security Management Conference
This paper provides an analysis of what information can be found on laptops that may or may not have connections to an organisation of some form, the statistics of the number of laptops stolen or otherwise misplaced in 2015 and 2016, and the number of potentially affected people from each of the cases. As seen in many news articles, laptops are often stolen or otherwise misplaced by employees or contractors in an organisational environment. As discovered in this research, many laptops are stolen from vehicles or homes of employees rather than organisation’s buildings, but not all. The majority of stolen …
Secrecy Rates And Optimal Power Allocation For Full-Duplex Decode-And-Forward Relay Wire-Tap Channels, Lubna Elsaid, Leonardo Jimenez-Rodriguez, Nghi H. Tran, Sachin Shetty, Shivakumar Sastry
Secrecy Rates And Optimal Power Allocation For Full-Duplex Decode-And-Forward Relay Wire-Tap Channels, Lubna Elsaid, Leonardo Jimenez-Rodriguez, Nghi H. Tran, Sachin Shetty, Shivakumar Sastry
Computational Modeling & Simulation Engineering Faculty Publications
This paper investigates the secrecy rates and optimal power allocation schemes for a decode-and-forward wiretap relay channel where the transmission from a source to a destination is aided by a relay operating in a full-duplex (FD) mode under practical residual self-interference. By first considering static channels, we address the non-convex optimal power allocation problems between the source and relay nodes under individual and joint power constraints to establish closed-form solutions. An asymptotic analysis is then given to provide important insights on the derived power allocation solutions. Specifically, by using the method of dominant balance, it is demonstrated that full power …
Social Media Strategies For Increasing Sales, Loretta N. Ezeife
Social Media Strategies For Increasing Sales, Loretta N. Ezeife
Walden Dissertations and Doctoral Studies
Social media have transformed business commerce and consumer communication, yet organizational leaders lack clear strategies for using social media platforms to their advantage. The purpose of this qualitative multicase study was to explore social media marketing strategies for increasing sales. The relationship marketing conceptual framework grounded this study. Data collection included semistructured interviews with 5 organizational leaders from 5 different organizations in the San Francisco, California, Bay Area and a review of participants’ documents including marketing materials, social media posts, and published sales reports. Data analysis included coding, categorization, and identification of major themes. The thematic assessment approach revealed 5 …