Digital Commons Network^™

Non-Detection Probability Of Diffusing Targets In The Presence Of A Moving Searcher, Pani W Fernando, Sivaguru S Sritharan

Communications on Stochastic Analysis

No abstract provided.

Lightweight Uav Launcher, Ben Miller, Christian Valoria, Corinne Warnock, Jake Coutlee

Mechanical Engineering

This report discusses the design, construction, and testing of a lightweight, portable UAV launcher. There is a current need for a small team of soldiers to launch a US Marine Tier II UAV in a remote location without transport. Research was conducted into existing UAV launcher designs and the pros and cons of each were recorded. This research served as a basis for concept generation during the initial design development stage. It was required that the design weigh less than 110 lbs, occupy a smaller volume than 48" x 24" 18" in its collapsed state, be portable by a single …

Applying Memory Forensics To Rootkit Detection, Igor Korkin, Ivan Nesterov

Annual ADFSL Conference on Digital Forensics, Security and Law

Volatile memory dump and its analysis is an essential part of digital forensics. Among a number of various software and hardware approaches for memory dumping there are authors who point out that some of these approaches are not resilient to various anti-forensic techniques, and others that require a reboot or are highly platform dependent. New resilient tools have certain disadvantages such as low speed or vulnerability to rootkits which directly manipulate kernel structures, e.g., page tables. A new memory forensic system – Malware Analysis System for Hidden Knotty Anomalies (MASHKA) is described in this paper. It is resilient to popular …

Why Penetration Testing Is A Limited Use Choice For Sound Cyber Security Practice, Craig Valli, Andrew Woodward, Peter Hannay, Mike Johnstone

Annual ADFSL Conference on Digital Forensics, Security and Law

Penetration testing of networks is a process that is overused when demonstrating or evaluating the cyber security posture of an organisation. Most penetration testing is not aligned with the actual intent of the testing, but rather is driven by a management directive of wanting to be seen to be addressing the issue of cyber security. The use of penetration testing is commonly a reaction to an adverse audit outcome or as a result of being penetrated in the first place. Penetration testing used in this fashion delivers little or no value to the organisation being tested for a number of …

Improving Image Clustering Using Sparse Text And The Wisdom Of The Crowds, Anna Ma, Arjuna Flenner, Deanna Needell, Allon G. Percus

CMC Faculty Publications and Research

We propose a method to improve image clustering using sparse text and the wisdom of the crowds. In particular, we present a method to fuse two different kinds of document features, image and text features, and use a common dictionary or “wisdom of the crowds” as the connection between the two different kinds of documents. With the proposed fusion matrix, we use topic modeling via non-negative matrix factorization to cluster documents.

Treatment Of Oil Sludge By Supercritical Water Oxidation (Scwo), Alia Ali Mubarak Busamra

Theses

The treatment and disposal of oil sludge represents major challenges for oil industries and municipalities. The oil sludge consumes high portion of oil industries' budget. Several destruction and conventional technologies such as incineration, landfill and biological treatment have been used to treat oil sludge. However, most of these technologies have not been commercially practical due to some limitations including efficiency, ease of operation and cost or not being friendly to the environment.

Supercritical Water Oxidation (SCWO) provides a powerful means to transform toxic organic materials into simple, relatively inert oxides. In this thesis, treatment of oil sludge by using SCWO …

The Optimal Release Of Sterile Males In Pest Management, Sergio Ramirez

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

With an application of the sterile insect technique, it is our goal to know the optimal rate of production of sterile males in order to control an insect pest invasion and protect crops. Starting with a fundametal relationship between costs of production and feeding rates, we construct an objective functional. We then use the relationships between the dierent stages of female reproduction to build the state equations. Once, we have dened the optimal control problem, we use the simulated annealing algorithm to determine the amount of sterile males to be released at each discrete time event. Multiple calculations are made …

The Nucleus 2013-2014, Rosalie A. Richards

Science Education Center

No abstract provided.

Pose Detection And Control Of Multiple Unmanned Underwater Vehicles Using Optical Feedback, Firat Eren, Shachak Pe'eri, Yuri Rzhanov, May-Win Thein, Barbaros Celikkol

Center for Coastal and Ocean Mapping

This paper proposes pose detection and control algorithms in order to control the relative pose between two Unmanned Underwater Vehicles (UUVs) using optical feedback. The leader UUV is configured to have a light source at its crest which acts as a guiding beacon for the follower UUV which has a detector array at its bow. Pose detection algorithms are developed based on a classifier, such as the Spectral Angle Mapper (SAM), and chosen image parameters. An archive look-up table is constructed for varying combinations of 5-degree-of-freedom (DOF) motion (i.e., translation along all three coordinate axes as well as pitch and …

Program And Proceedings: Nebraska Academy Of Sciences 1880–2014, 134th Anniversary Year, One Hundred-Twenty-Fourth Annual Meeting, April 11, 2014

Nebraska Academy of Sciences: Programs and Proceedings

Program

Aeronautics and Space Science

Collegiate Academy: Biology

Chemistry and Physics

Collegiate Academy: Chemistry and Physics

Applied Science and Technology

Biological and Medical Sciences

Aeronautics and Space Science, Poster Session

Anthropology

Maiben Memorial Lecture: "Education, Careers and Opportunities in Engineering and Metallurgy in Nebraska," Terry Rasmussen, Nucor Steel, Norfolk, Nebraska

Teaching of Science and Mathematics

Anthropology

Earth Science

'An Explosive Of Quite Unimaginable Force': Did Werner Heisenberg Obstruct German Atomic Bomb Research?, Aaron G. Noll

Graduate History Conference, UMass Boston

Why was Nazi Germany unable to acquire an atomic bomb during World War II? An answer to this question necessarily involves an analysis of the wartime conduct of Werner Heisenberg. As the undisputed leader of German nuclear research, Heisenberg was integral to the successful production of a bomb. Heisenberg claimed after the war that the Nazis lacked the economic resources for this project. Moreover, Nazi military strategy ruled out such a sustained long-term commitment in armaments development. Heisenberg explained that he personally felt fortunate that these circumstances prevented Hitler from having a bomb. He argued that he merely “pretended” to …

Development Of Virtue Ethics Based Security Constructs For Information Systems Trusted Workers, John M. Gray, Gurvirender Tejay

CCE Student and Alumni Proceedings, Presentations, Speeches and Lectures

Despite an abundance of research on the problem of insider threats only limited success has been achieved in preventing trusted insiders from committing security violations. Virtue ethics may be a new approach that can be utilized to address this issue. Human factors such as moral considerations and decisions impact information system design, use, and security; consequently they affect the security posture and culture of an organization. Virtue ethics based concepts have the potential to influence and align the moral values and behavior of Information Systems workers with those of an organization in order to provide increased protection of IS assets. …

A Recommender System In The Cyber Defense Domain, Katherine B. Lyons

Theses and Dissertations

In the cyber domain, network defenders have traditionally been placed in a reactionary role. Before a defender can act they must wait for an attack to occur and identify the attack. This places the defender at a disadvantage in a cyber attack situation and it is certainly desirable that the defender out maneuver the attacker before the network has been compromised. The goal of this research is to determine the value of employing a recommender system as an attack predictor, and determine the best configuration of a recommender system for the cyber defense domain. The most important contribution of this …

Band Gap Transition Studies Of U:Tho2 Using Cathodoluminescence, Joshua D. Reding

Theses and Dissertations

The Department of Defense has expressed interest in thorium dioxide (ThO₂) and uranium dioxide (UO₂) as possible candidates for use as special nuclear material in designing neutron detectors. Both materials have large neutron interaction cross sections. Uranium dioxide is particularly attractive due to its semiconducting properties and a relatively small band gap of 2 eV. Both materials fluoresce under ionizing radiation making them candidates for scintillating detectors. Three U_x:Th_1-xO₂ (x= 0.00, 0.01, 0.22) hydrothermally grown single crystals were examined using cathodoluminescence to interrogate the changing electronic properties of ThO₂ as …

Particle Filtering For Frequency Estimation From Acoustic Time-Series In Dispersive Media, Nattapol Aunsri

Dissertations

Acoustic signals propagating in the ocean carry information about geometry and environmental parameters within the propagation medium. Accurately retrieving this information leads us to effectively estimate parameters that are of utmost importance in environmental studies, climate monitoring, and defense. This dissertation focuses on the development of sequential Bayesian filtering methods to obtain accurate estimates of instantaneous frequencies using Short Term Fourier Transforms within the acoustic field measured at an array of hydrophones, which can be used in a subsequent step for the estimation of propagation related parameters. We develop a particle filter to estimate these frequencies along with modal amplitudes, …

The Santa Clara, 2014-01-30, Santa Clara University

The Santa Clara

No abstract provided.

Simultaneous High-Performance Liquid Chromatography-Tandem Mass Spectrometry (Hplc-Ms-Ms) Analysis Of Cyanide And Thiocyanate From Swine Plasma, Raj K. Bhandari, Erica Manandhar, Robert P. Oda, Gary A. Rockwood, Brian A. Logue

Chemistry and Biochemistry Faculty Publications

An analytical procedure for the simultaneous determination of cyanide and thiocyanate in swine plasma was developed and validated. Cyanide and thiocyanate were simultaneously analyzed by high-performance liquid chromatography tandem mass spectrometry in negative ionization mode after rapid and simple sample preparation. Isotopically labeled internal standards, Na¹³C¹⁵N and NaS¹³C¹⁵N, were mixed with swine plasma (spiked and nonspiked), proteins were precipitated with acetone, the samples were centrifuged, and the supernatant was removed and dried. The dried samples were reconstituted in 10 mM ammonium formate. Cyanide was reacted with naphthalene-2,3-dicarboxaldehyde and taurine to form N-substituted …

08. Engineering, University Of Central Oklahoma

Oklahoma Research Day Abstracts

No abstract provided.

Towards A Set Of Metrics To Guide The Generation Of Fake Computer File Systems, Ben Whitham

Australian Digital Forensics Conference

Fake file systems are used in the field of cyber deception to bait intruders and fool forensic investigators. File system researchers also frequently generate their own synthetic document repositories, due to data privacy and copyright concerns associated with experimenting on real-world corpora. For both these fields, realism is critical. Unfortunately, after creating a set of files and folders, there are no current testing standards that can be applied to validate their authenticity, or conversely, reliably automate their detection. This paper reviews the previous 30 years of file system surveys on real world corpora, to identify a set of discrete measures …

Prerequisites For Creating Resources And Compositions For Cyber Defence, Tuija Kuusisto, Rauno Kuusisto

Australian Information Warfare and Security Conference

The aim of this paper is to increase understanding about the prerequisites which evolving cyber society sets for actors, activities and structures of the defenders of society. The research proposes an approach for identifying, analysing and scheduling these prerequisites for decision-making. The paper presents results of two case studies where the proposed approach is applied. The case studies indicate that in the future compositions are needed for forming of joint defence cyber community and resources for joining this community in affordable and beneficial ways. These are the next steps on the strategic path to jointly defended cyber community of global …

German Foreign Policy In The Cyber Age, Patrick Schmitz 14

Honor Scholar Theses

None

Application Of Cellular Automata To Detection Of Malicious Network Packets, Robert L. Brown

CCAC Theses and Dissertations

A problem in computer security is identification of attack signatures in network packets. An attack signature is a pattern of bits that characterizes a particular attack. Because there are many kinds of attacks, there are potentially many attack signatures. Furthermore, attackers may seek to avoid detection by altering the attack mechanism so that the bit pattern presented differs from the known signature. Thus, recognizing attack signatures is a problem in approximate string matching. The time to perform an approximate string match depends upon the length of the string and the number of patterns. For constant string length, the time to …

Up-Dating Investigation Models For Smart Phone Procedures, Brian Cusack, Raymond Lutui

Australian Digital Forensics Conference

The convergence of services in Smart Technologies such as iPhones, Androids and multiple tablet work surfaces challenges the scope of any forensic investigation to include cloud environments, devices and service media. The analysis of current investigation guidelines suggests that each element in an investigation requires an independent procedure to assure the preservation of evidence. However we dispute this view and review the possibility of consolidating current investigation guidelines into a unified best practice guideline. This exploratory research proposes to fill a gap in digital forensic investigation knowledge for smart technologies used in business environments and to propose a better way …

Monitoring Ligand-Induced Nucleic Acid Conformational Changes Using Ion Mobility Spectrometry-Mass Spectrometry, Bill Kenneth Redick

Legacy Theses & Dissertations (2009 - 2024)

Three-dimensional structures of biopolymers frequently dictate the biological role those molecules play. As such, investigation into structure of nucleic acids can provide important information pertaining to how those nucleic acids work. Many nucleic acid species, especially single-stranded RNA, fold into unique structures that allow them to function properly. Metals, and other cationic species, are often bound to the nucleic acid to make folding into the proper structure more favorable by neutralizing the negative charge on the nucleic acid imparted by the phosphate group. This investigation explores tertiary structure of nucleic acids that have been folded in the presence of ligands …

Synthesis Of An Unsymmetrical Ccc-Nhc Pincer Ligand Precursor, Brian Spurlock

Honors Theses

The purpose of this study was to synthesize a 3-butyl-1-(3-(3-butyl-1H-imidazol-3-ium-1-yl)phenyl)-4,5-dichloro-1H-imidazol-3-ium salt using an Ullmann-type copper coupling reaction. This salt would subsequently be metallated and evaluated for C-H bond activation and luminescence. However, NMR and MS spectra did not show evidence of conversion to the desired product under standard conditions so a model reaction was designed making use of recent findings concerning the Ullmann-type coupling of imidazoles to aryl halides. Specifically, an activated aryl halide with a larger leaving group was used with a more soluble base and a ligand for the copper. The desired product appears by ESI-MS to have …

Improving Pre-Hospital Care At Mass Gathering Events: Applying Military Intelligence Methodology To The St John Ambulance Wa Event Health Operations, Alan James Davies

Theses : Honours

With the growth of the mass gathering event domain and its ever constant place within the contemporary Australian lifestyle, the number of patrons who attend these events that require medical assistance rises (Zeitz et al., 2007, p. 23; Zeitz, Zeitz, & Arbon, 2005, p. 164; Zeitz, Zeitz, & Kadow-Griffin, 2012). This increased demand and inherited risk to the event organiser, the patrons attending and the pre-hospital care or first aid provider creates a need for the investigation into enhancements to the medical care operations at these events. The provision of pre-hospital care at mass gathering events in Western Australia is …

Idiographic Digital Profiling: Behavioral Analysis Based On Digital Forensics, Chad M. Steel

Journal of Digital Forensics, Security and Law

Idiographic digital profiling (IDP) is the application of behavioral analysis to the field of digital forensics. Previous work in this field takes a nomothetic approach to behavioral analysis by attempting to understand the aggregate behaviors of cybercriminals. This work is the first to take an idiographic approach by examining a particular subject's digital footprints for immediate use in an ongoing investigation. IDP provides a framework for investigators to analyze digital behavioral evidence for the purposes of case planning, subject identification, lead generation, obtaining and executing warrants, and prosecuting offenders.

The Domestic Natural Gas Shortage In China, Ting Guo

Dissertations, Master's Theses and Master's Reports - Open

This thesis analyzes the domestic shortage in the Chinese natural gas market. Both the domestic supply and demand of natural gas are growing fast in China. However, the supply cannot catch up with the demand. Under the present pricing mechanism, the Chinese natural gas market cannot get the equilibrium by itself. Expensive imports are inadequate to fill the increasing gap between the domestic demand and supply. Therefore, the shortage problem occurs. Since the energy gap can result in the arrested development of economics, the shortage problem need to be solved. This thesis gives three suggestions to solve the problem: the …

Design Requirements For Generating Deceptive Content To Protect Document Repositories, Ben Whitham

Australian Information Warfare and Security Conference

For nearly 30 years, fake digital documents have been used to identify external intruders and malicious insider threats. Unfortunately, while fake files hold potential to assist in data theft detection, there is little evidence of their application outside of niche organisations and academic institutions. The barrier to wider adoption appears to be the difficulty in constructing deceptive content. The current generation of solutions principally: (1) use unrealistic random data; (2) output heavily formatted or specialised content, that is difficult to apply to other environments; (3) require users to manually build the content, which is not scalable, or (4) employ an …

A User-Oriented Network Forensic Analyser: The Design Of A High-Level Protocol Analyser, D Joy, F Li, N L. Clarke, S M. Furnell

Australian Digital Forensics Conference

Network forensics is becoming an increasingly important tool in the investigation of cyber and computer-assisted crimes. Unfortunately, whilst much effort has been undertaken in developing computer forensic file system analysers (e.g. Encase and FTK), such focus has not been given to Network Forensic Analysis Tools (NFATs). The single biggest barrier to effective NFATs is the handling of large volumes of low-level traffic and being able to exact and interpret forensic artefacts and their context – for example, being able extract and render application-level objects (such as emails, web pages and documents) from the low-level TCP/IP traffic but also understand how …