Digital Commons Network^™

Ip Prefix Hijack Detection Using Bgp Connectivity Monitoring, Hussain Alshamrani, Bogdan Ghita

School of Engineering, Computing and Mathematics

In spite of significant on-going research, the Border gateway protocol (BGP) still encompasses conceptual vulnerability issues regarding impersonating the ownership of IP prefixes for ASes (Autonomous Systems). In this context, a number of research studies focused on securing BGP through historical-based and statistical-based behavioural models. This paper suggests a novel method based on tracking the connectivity of suspicious ASes, which are received from a program tracing IP prefix hijacking signature. The paper uses Full Cross-Validation test to investigate the accuracy of the invented method and studies the similarity and differences between malicious and benign observations before they are classified. Classification …

Droidscribe: Classifying Android Malware Based On Runtime Behavior, Santanu Kumar Dash, Guillermo Suarez-Tangil, Salahuddin Khan, Kimberly Tam, Mansour Ahmadi, Johannes Kinder, Lorenzo Cavallaro

School of Engineering, Computing and Mathematics

The Android ecosystem has witnessed a surge in malware, which not only puts mobile devices at risk but also increases the burden on malware analysts assessing and categorizing threats. In this paper, we show how to use machine learning to automatically classify Android malware samples into families with high accuracy, while observing only their runtime behavior. We focus exclusively on dynamic analysis of runtime behavior to provide a clean point of comparison that is dual to static approaches. Specific challenges in the use of dynamic analysis on Android are the limited information gained from tracking low-level events and the imperfect …

Preservice And Practicing Teacher Science Inquiry Projects: An Analysis Of Their Understanding Of The Inquiry Process, Benjamin D. Olsen

Dissertations and Theses @ UNI

Student conducted inquiry is an essential component of the Next Generation Science Standards and considered to be a core goal of teaching science methods. Teachers need to understand what student inquiry entails, to be able to successfully conduct their own inquiry investigations, and to understand this process well so as to guide original student inquiry investigations. Some suggest that, as a result of No Child Left Behind legislation, an entire generation of students have missed out on inquiry-based elementary science instruction. Research indicates that many preservice teachers find it difficult to bridge knowledge of subject matter with pedagogy – making …

The Effects Of Blended Learning On Critical Thinking In A High School Earth Science Class, Renee Nicole Borglum

Dissertations and Theses @ UNI

This study analyzed the effects of differing levels of technology use in a high school Earth Science class on student performance on the Classroom Test of Scientific Reasoning (CTSR). Blended learning manipulates the combination of hands-on activities, classroom discussions, online discussions, interactive simulations and a variety of assessments that engage, instruct and assess student learning. Critical thinking is the set of skills and dispositions that foster problem solving, reasoning ability and selfregulation. The increasing use of technology in the classroom and fluctuation of content standards prompted this research. The results have implications for the classroom teacher of a wide range …

Some Convergence Properties Of Minkowski Functionals Given By Polytopes, Jesse Moeller

Dissertations and Theses @ UNI

In this work we investigate the behavior of the Minkowski Functionals admitted by a sequence of sets which converge to the unit ball ‘from the inside’. We begin in R 2 and use this example to build intuition as we extend to the more general R n case. We prove, in the penultimate chapter, that convergence ‘from the inside’ in this setting is equivalent to two other characterizations of the convergence: a geometric characterization which has to do with the sizes of the faces of each polytope in the sequence converging to zero, and the convergence of the Minkowski functionals …

Transient Analysis Of Lumped Circuit Networks-Loaded Thin Wires By Dgtd Method, P. Li, Y. Shi, Lijun Jiang, H. Bagci

Electrical and Computer Engineering Faculty Research & Creative Works

With the purpose of avoiding very fine mesh cells in the proximity of a thin wire, the modified telegrapher’s equations (MTEs) are employed to describe the thin wire voltage and current distributions, which consequently results in reduced number of unknowns and augmented Courant–Friedrichs–Lewy (CFL) number. As hyperbolic systems, both the MTEs and the Maxwell’s equations are solved by the discontinuous Galerkin time-domain (DGTD) method. In realistic situations, the thin wires could be either driven or loaded by circuit networks. The thin wire–circuit interface performs as a boundary condition for the thin wire solver, where the thin wire voltage and current …

A Statistical Approach To Broadband Noise Suppression, Walter Eversman

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A method for estimating achievable attenuation for broadband noise in an inlet duct, consistent with Dyer's suggestion that an appropriate model includes all propagating acoustic modes at equal power and random phase, is proposed. Broadband noise is represented in a frequency domain analysis by a statistical distribution of propagating duct modes. The required number of modes is estimated by Rice's approximation method and verified in FEM modeling. For each propagating circumferential mode propagating radial modes have equal acoustic power and random phase. Source acoustic power is distributed among circumferential modes according to the number of propagating radial modes in the …

Design Of First-Row Transition Metal Bis(Alkoxide) Complexes And Their Reactivity Toward Nitrene And Carbene Transfer, James Bellow

Wayne State University Dissertations

The novel alkoxide ligand [OCtBu2Ph], or [OR], was synthesized in a single step as a lithium salt. It was then reacted with a series of first-row transition metal(II) halides, with widely varying results. Upon reaction with chromium, manganese, iron, or cobalt(II) chloride, dimeric complexes of the form M2(OR)4Li2Cl2 were formed, which displayed rare seesaw geometry at the metal. This unusual geometry was confirmed by various spectroscopic and computational studies. Computational studies also indicate that the steric bulk of the ligand, as well as the inclusion of lithium atoms in the molecules, are what lead to the seesaw geometry. Reaction of …

Comparison Of Cox Regression And Discrete Time Survival Models, Hong Ye

Wayne State University Dissertations

A standard analysis of prostate cancer biochemical failure data is done by conducting two approaches in which risk factors or covariates are measured. Cox regression and discrete-time survival models were compared under different attributes: sample size, time periods, and parameters in the model. The person-period data was reconstructed when examining the same data in discrete-time survival model. Twenty-four numerical examples covering a variety of sample sizes, time periods, and number of parameters displayed the closeness of Cox regression and discrete-time survival methods in situations typical of the cancer study.

Identification Of Lead-Sensitive Expression And Splicing Quantitative Trait Loci In Drosophila Melanogaster By Analysis Of Rna-Seq Data, Wen Qu

Wayne State University Dissertations

Lead exposure has long been one of the most important topics in global public health since it is a potent developmental neurotoxin. Here, we conducted an expression QTL (eQTLs) analysis, which is genome-wide association analysis of genetic variants with differential gene expression, in the male heads of 79 Drosophila melanogaster recombinant inbred lines originally from eight parental strains in the presence or absence of developmental exposure to 250 µM lead acetate. The aim was to study the effects of lead exposure on gene expression and identify the lead-responsive genes. After detecting 1,536 cis-eQTLs and 952 trans-eQTLs (1000 permutation threshold at …

Synthesis, Characterization, And Properties Of Peroxo-Based Oxygen-Rich Compounds For Potential Use As Greener High Energy Density Materials, Nipuni-Dhanesha Horadugoda Gamage

Wayne State University Dissertations

One main aspect of high energy density material (HEDM) design is to obtain greener alternatives for HEDMs that produce toxic byproducts. Primary explosives lead azide, lead styphnate, and mercury fulminate contain heavy metals that cause heavy metal poisoning. Leaching of the widely used tertiary explosive NH4ClO4 into groundwater has resulted in human exposure to ClO4– ions, which cause disruptions of thyroid related metabolic pathways and even thyroid cancer. Many research efforts to find replacements have gained little success. Thus, there is a need for greener HEDMs. Peroxo-based oxygen-rich compounds are proposed as a potential new class of greener HEDMs due …

A Topological Study Of Stochastic Dynamics On Cw Complexes, Michael Joseph Catanzaro

Wayne State University Dissertations

In this dissertation, we consider stochastic motion of subcomplexes of a CW complex, and explore the implications on the underlying space. The random process on the complex is motivated from Ito diffusions on smooth manifolds and Langevin processes in physics. We associate a Kolmogorov equation to this process, whose solutions can be interpretted in terms of generalizations of electrical, as well as stochastic, current to higher dimensions. These currents also serve a key function in relating the random process to the topology of the complex. We show the average current generated by such a process can be written in a …

Variables That Impact The Implementation Of Project-Based Learning In High School Science, Kellie Renee Cunningham

Wayne State University Dissertations

Wagner and colleagues (2006) state the mediocrity of teaching and instructional leadership is the central problem that must be addressed if we are to improve student achievement. Educational reform efforts have been initiated to improve student performance and to hold teachers and school leaders accountable for student achievement (Wagner et al., 2006). Specifically, in the area of science, goals for improving student learning have led reformers to establish standards for what students should know and be able to do, as well as what instructional methods should be used. Key concepts and principles have been identified for student learning. Additionally, reformers …

Program Evaluation Of The Wayne State University (Wsu) Transition To Independence Program (Tip), Dinah Ayna

Wayne State University Dissertations

Background: A significant number of children in the US are placed in the child welfare system every year. Among the multiple negative outcomes associated with being in the foster care system is a wide academic achievement gap between foster students and the general population, as well as other disadvantaged groups (e.g. low income). Low academic achievement is particularly pronounced in college. The government and higher education institutions are recognizing these educational gaps and developing specialized programs to address the unique needs of foster students; however, the effectiveness of these programs remains unclear. This study aims at evaluating the effectiveness of …

Development Of Single And Array Electro-Chemical Sensors For Real-Time Trace Metal Analysis In Aqueous Environmental Media, Yuanyuan Yang

Wayne State University Dissertations

Detection of trace metals has great importance in environmental and biological applications. While traditional electrochemical techniques have played critical roles in this field, their usefulness is limited by temporal resolution, Hg toxicity and stability concerns. Recently, we developed a method using fast-scan cyclic voltammetry (FSCV) at carbon-fiber microelectrodes (CFMs) to achieve rapid measurement of metal ions with high sensitivity, selectivity, and stability. Through optimizations this method showed strengths in real-time trace metal analysis. ‬‬‬‬‬‬

‪Analytical selectivity was improved via covalent functionalization on CFMs. We employed diazonium electrochemical reduction followed by click chemistry to create robust covalent attachments. We showcased its …

Analysis Of The Stebi-B Instrument As It Is Used To Predict The Science Teaching Self-Efficacy Beliefs Of Preservice Elementary Teachers, Martha Alice Stone

Dissertations and Theses @ UNI

Using the STEBI-B tool in a pre/post-test setting is common in educational research when measuring the influence of course work on the science teaching self-efficacy of preservice elementary teachers. This study was the first to use the STEBI-B in conjunction with a self-reflective tool to evaluate the influence of a required science content course on the science teaching self-efficacy of 54 preservice elementary teachers.

Concurrent collection of three sets of data happened at the beginning and at the end of an Inquiry into Earth & Space Science course designed for preservice elementary teachers. The self-reflective instrument measured science-teaching self-efficacy from …

Three Men In The Wilderness: Ideas And Concepts Of Nature During The Progressive Era With Theodore Roosevelt, Gifford Pinchot And John Muir, Jeffrey A. Duke

Dissertations and Theses @ UNI

When I began this research in the summer of 2014, I endeavored to find out how Americans comprehended nature in the Progressive Era. By the Progressive Era the historian Frederick Jackson Turner declared the frontier to be closed. This notion that no wide open spaces remained to be conquered altered the American people’s attitude towards nature. The perspectives of three men who were at the forefront of environmental policy illustrate how America’s understanding of nature had changed. These three men were twenty-sixth President Theodore Roosevelt, professional forester Gifford Pinchot and naturalist John Muir. Describing the similarities and differences in these …

Using One-To-One Computing For Differentiated Instruction In Iowa: An Investigation Of The Impact Of Teachers' Perceptions Of Teaching And Learning, Jodi A. Bermel

Dissertations and Theses @ UNI

The 1983 seminal work entitled A Nation at Risk recommended that all high school graduates be proficient in the Five New Basics: English, mathematics, science, social studies, and computer science. To address the No Child Left Behind mandates, educators and administrators are evaluating the theory and practice of Differentiated Instruction (DI). One-to-one computer initiatives became an element of DI strategy due to the well-documented advantages in the use of technology to address individual learning needs. The purpose of this qualitative case study was to examine administrators’ and teachers’ perceptions of using one-to-one computing to differentiate instruction and to identify potential …

A Comprehensive Model Of The Transport Phenomena In Gas Metal Arc Welding, Junling Hu, Zhenghua Rao, Hai-Lung Tsai

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A comprehensive two-dimensional gas metal arc welding (GMAW) model was developed to take into account all the interactive events in the gas metal arc welding process, including the arc plasma, melting of the electrode, droplet formation, detachment, transfer, and impingement onto the workpiece, and the weld-pool dynamics and weld formation. The comprehensive GMAW model tracks the free surface using the volume of fluid method and directly modeled the coupling effects between the arc domain and the metal domain, thus eliminating the need to assign boundary conditions at the interface. A thorough investigation of the plasma arc characteristics was conducted to …

Learning Path Adaptivity In Support Of Flipped Learning: A Knowledge-Based Approach, Yu Liang Chi, Tsang Yao Chen

Business and Information Technology Faculty Research & Creative Works

Flipped learning inverts the two learning spaces of traditional education: the classroom group learning space and the homework individual learning space. In flipped learning, learners are exposed to direct instruction for basic knowledge acquisition before coming to the classroom for active learning with the teacher and peers. In recent years, flipped learning has received vast attention from educational practitioners and researchers. However, this study argues that existing e-learning systems mainly serve for learning management and content delivery purposes and lack support for flipped learning. As an innovative educational approach, flipped learning needs more pedagogical elements such as integrated instructional design …

Water Demand Forecasting In Al-Ain City, United Arab Emirates, Hebah Ibrahim Younis

Theses

Al-Ain city is the second largest city in the Emirate of Abu Dhabi and the third in the United Arab Emirates (UAE). Currently, desalination plants are the only source of municipal water in Al-Ain city with an average daily supply of 170 MIG. The expected natural population growth, in addition to future projects, will certainly put additional stress on the water resources in the city. Therefore, Al-Ain city seems to be in an urgent need for estimations of future water demands for achieving sustainable development. The main aim of this thesis is to introduce a water demand forecasting model to …

A Study On Singapore Haze, Bingtian Dai, Kasthuri Jayarajah, Ee-Peng Lim, Archan Misra, Shriguru Nayak

Research Collection School Of Computing and Information Systems

In 2015, Singaporean have experienced one of the worse air pollution crises in history. With datasets from a well-known photo sharing social network, we analyze how this haze affects Singaporean's daily life. We will share our preliminary results in this paper.

Demo: Smartwatch Based Food Diary And Eating Analytics, Sougata Sen, Vigneshwaran Subbaraju, Archan Misra, Youngki Lee, Rajesh Krishna Balan

Research Collection School Of Computing and Information Systems

Monitoring an individual’s daily dietary intake can provide various insights regarding the health of the individual. Applications such as My Fitness Pal exists, which allows individuals to monitor all items that the individual consumed. However, manual monitoring can be labour intensive. To overcome this limitation, wrist worn sensor based eating habit monitoring has been studied by various researchers. These systems can detect eating gesture, but they cannot determine what is being eaten. We have built a system which can (i) detect eating gesture using the smartwatch's inertial sensors (ii) use the smartwatch's camera to capture images of food consumed at …

Demo: Towards Immersive And Interactive Gym Exercises, Fazlay Rabbi, Taiwoo Park, Biyi Fang, Mi Zhang, Youngki Lee, Rajiv Ranganathan

Research Collection School Of Computing and Information Systems

We demonstrate JARVIS, a novel virtual coaching system based on virtual reality (VR) and Internet of Things (IoT) technologies. It creates a truly immersive gym exercising experience for machine-based strength training and guides users in a highly interactive manner. With these unique advantages, we believe that JARVIS has a potential to revolutionize personal fitness experiences.

Exploring Factors That Explain Possible Needs Of Mobile Devices Integrated In Elearning Through Learning Profiling, Cheng-Chang Pan, Stephen Sivo, Francisco Garcia

Computer Science Faculty Publications

Profiling elearning students is a common practice in the field. It carries good intention. Which learner group requires more attention of the university administration in optimizing resources and creating incentives resulting into a social outcome that is efficient and makes all concerned parties better off? Results suggested that the learners who perceive higher in university’s CMS support, instructor instructional and communicational use of CMS, and affinity for technology may deserve better attention of the management.

Effect Of Phytosanitary Irradiation And Methyl Bromide Fumigation On The Physical, Sensory, And Microbiological Quality Of Blueberries And Sweet Cherries, Karen Thang, Kimberly Au, Cyril Rakovski, Anuradha Prakash

Food Science Faculty Articles and Research

Background

The objective of this study was to determine whether irradiation could serve as a suitable phytosanitary treatment alternative to methyl bromide (MB) fumigation for blueberries and sweet cherry and also to determine the effect of phytosanitary irradiation treatment on survival of Salmonella spp. and Listeria monocytogenes on these fruit. ‘Bluecrop’ blueberries (Vaccinium corymbosum) and ‘Sweetheart’ cherries (Prunus avium) were irradiated at 0.4 kGy or fumigated with methyl bromide and evaluated for quality attributes during storage.

Results

Irradiation caused an immediate decrease in firmness of both fruit without further significant change during storage. Fumigated fruit, in …

The Nature Of Kinematic Waves In Glaciers And Their Application To Understanding The Nisqually Glacier, Mt. Rainier, Washington, Brita Ilyse Horlings

University Honors Theses

The Nisqually Glacier is one of the best studied glaciers on Mt. Rainier. Data was first collected on the glacier in 1857 and since then a number of kinematic waves have been observed but not extensively studied. The purpose of the thesis is to numerically model the conditions that favor or restrict kinematic wave propagation/initiation and subsequently model the relationship between kinematic wave behavior and the Nisqually Glacier. The numerical models used in this study are 2-D and use bedrock elevation, mass balance, basal sliding, and other equations to simulate alpine glaciers. A perturbation is added instantaneously for a specified …

Beyond Just Sea-Level Rise: Considering Macroclimatic Drivers Within Coastal Wetland Vulnerability Assessments To Climate Change, Michael J. Osland, Nicholas M. Enwright, Richard H. Day, Christopher A. Gabler, Camille L. Stagg, James B. Grace

School of Earth, Environmental, & Marine Sciences Faculty Publications

Due to their position at the land-sea interface, coastal wetlands are vulnerable to many aspects of climate change. However, climate change vulnerability assessments for coastal wetlands generally focus solely on sea-level rise without considering the effects of other facets of climate change. Across the globe and in all ecosystems, macroclimatic drivers (e.g., temperature and rainfall regimes) greatly influence ecosystem structure and function. Macroclimatic drivers have been the focus of climate change-related threat evaluations for terrestrial ecosystems, but largely ignored for coastal wetlands. In some coastal wetlands, changing macroclimatic conditions are expected to result in foundation plant species replacement, which would …

Statistical Modeling To Investigate Anatomy And Function Of The Knee, Lowell Matthew Smoger

Electronic Theses and Dissertations

The natural knee is a hinge joint with significant functional requirements during activities of daily living; as a result, acute and chronic injuries can occur. Pathologies are influenced by joint anatomy and may include patellar maltracking, cartilage degeneration (e.g. osteoarthritis), or acute injuries such as meniscal or ligamentous tears. Population variability makes broadly applicable conclusions about etiology of these conditions from small-scale investigations challenging. The work presented in this dissertation is a demonstration of statistical modeling approaches to evaluate population variability in anatomy of the knee and function of its tibiofemoral (TF) and patellofemoral (PF) joints. Three-dimensional (3D) computational models …

Grange Stone Circle (B):New Thoughts On An Old Monument, Frank Prendergast

Book/Book Chapter

No abstract provided.