Digital Commons Network^™

Thermolysis Of Hypervalent Iodine Complexes: Synthesis Of Fluorinated Radiotracers For Positron Emission Tomography And Synthesis Of Quaternary Α-Alkyl Α-Aryl Amino Acids, Jayson J. Kempinger

Department of Chemistry: Dissertations, Theses, and Student Research

Hypervalent iodine complexes can be used to deliver a variety of functional groups to arenes. Delivery of fluorine‑18, in a manner compatible with positron emission tomography (PET), is especially attractive. Vizamyl^TM, an injectable solution of [¹⁸F]Flutemetamol, is currently used to diagnose and monitor the progression of Alzheimer’s Disease (AD), the most common form of dementia. AD affects 47.5 million people across the world as of 2015, and is projected to affect 1 in 85 people by 2050. An improved radiosynthesis of [¹⁸F]Flutemetamol via a diaryliodonium salt is described. The use of nonpolar solvents minimizes …

Middle School Teachers' Perspectives Of Transitioning From The Traditional Teaching Model To The Blended Learning Model: A Phenomenological Study, Lisa Manross

Doctoral Dissertations and Projects

The purpose of this phenomenological study was to explore the shared experiences of teachers going from a face-to-face traditional teaching model (FTFM) to a blended learning model (BLM) in a middle school setting in the southeastern United States. The theory, which guided this study was Schlossberg’s (1981, 2011) Transition Theory. Within the study, one central question and four sub-questions were used to guide the study. The research questions focused on middle school teachers’ experiences, as they implemented a BLM of instruction. To address these questions, data collection included individual interviews, a focus group, and a blogging activity. Using Moustakas’ (1994) …

Self-Efficacy Score Differences Between First-Year, Male And Female First-Generation And Non-First-Generation College Students As Measured By The College Self-Efficacy Inventory (Csei), Janet Shepherd

Doctoral Dissertations and Projects

Students of all backgrounds have a transition period when entering college. However, first-time, first-generation college students encounter more problems and have more difficulties becoming acclimated to college resulting in decreased first-year retention rates for first-generation students. These problems and difficulties are related to course work, socialization, and roommate issues. Research has shown that self-efficacy and collective efficacy are important in student achievement. This research study explored if there was a difference in student perception of self-efficacy among male and female first-year, first-generation college students and male and female first-year, non-first-generation college students. A quantitative, causal-comparative study was conducted utilizing the …

Job-Destroying Effects Of $15 Minimum Wage By Metro, Industry And Occupation, Andrew R. Hanson, Zackary Hawley

Economics Faculty Research and Publications

No abstract provided.

Institute For Scientific Information-Indexed Biomedical Journals Of Saudi Arabia: Their Performance From 2007-2014, Dileep K. Rohra, Vikram K. Rohra, Peter Cahusac

Saudi Medical Journal

Objectives: To compare the journal impact factor (JIF) and Eigenfactor score (ES) of Institute for Scientific Information (ISI)-indexed biomedical journals published from the Kingdom of Saudi Arabia (KSA) over the last 8 years. Methods: This is a retrospective study, conducted at Alfaisal University, Riyadh, KSA from January to March 2016. The Journal Citation Reports of ISI Web of Knowledge were accessed, and 6 Saudi biomedical journals were included for analysis. Results: All Saudi journals have improved their IF compared with their baseline. However, the performance of the Journal of Pharmaceutical Sciences and Neurosciences has been exceptionally good. The biggest improvement …

Shape Analysis Of Traffic Flow Curves Using A Hybrid Computational Analysis, Wasim Irshad Kayani, Shikhar P. Acharya, Ivan G. Guardiola, Donald C. Wunsch, B. Schumacher, Isaac Wagner-Muns

Engineering Management and Systems Engineering Faculty Research & Creative Works

This paper highlights and validates the use of shape analysis using Mathematical Morphology tools as a means to develop meaningful clustering of historical data. Furthermore, through clustering more appropriate grouping can be accomplished that can result in the better parameterization or estimation of models. This results in more effective prediction model development. Hence, in an effort to highlight this within the research herein, a Back-Propagation Neural Network is used to validate the classification achieved through the employment of MM tools. Specifically, the Granulometric Size Distribution (GSD) is used to achieve clustering of daily traffic flow patterns based solely on their …

Csp And “Omics” Technology Applied On Versatile And Intelligent Portable Platform For Modeling Complex Bio-Medical Data, Florentin Smarandache, Luige Vladareanu, Mihaiela Iliescu, Hongbo Wang, Feng Yongfei, Victor Vladareanu

Branch Mathematics and Statistics Faculty and Staff Publications

This paper presents relevant aspects of the idea of using the digital medicine in cancer, so that to shape a viable strategy for creating and implementing an interactive digital platform, NEO-VIP, that should be the basic support to design the strategy for integration of basic, clinical and environmental research on neoplasia progression to cancer. The two main components of the VIPRO Platform are represented by the workstation “Engineering Station” for CPS (Cyber Physical System) and “omics” technology and by the “Graphical Station” for the development of a virtual mechatronic system environment and virtual reality for system components' motion. The NEO-VIP …

Computation Of Shortest Path Problem In A Network With Sv-Trapezoidal Neutrosophic Numbers, Florentin Smarandache, Said Broumi, Assia Bakali, Mohamed Talea, Luige Vladareanu

Branch Mathematics and Statistics Faculty and Staff Publications

In this work, a neutrosophic network method is proposed for finding the shortest path length with single valued trapezoidal neutrosophic number. The proposed algorithm gives the shortest path length using score function from source node to destination node. Here the weights of the edges are considered to be single valued trapezoidal neutrosophic number. Finally, a numerical example is used to illustrate the efficiency of the proposed approach

Reducing Adaptation Latency For Multi-Concept Visual Perception In Outdoor Environments, Maggie Wigness, John G. Rogers, Luis Ernesto Navarro-Serment, Arne Suppe, Bruce A. Draper

Research Collection School Of Computing and Information Systems

Multi-concept visual classification is emerging as a common environment perception technique, with applications in autonomous mobile robot navigation. Supervised visual classifiers are typically trained with large sets of images, hand annotated by humans with region boundary outlines followed by label assignment. This annotation is time consuming, and unfortunately, a change in environment requires new or additional labeling to adapt visual perception. The time is takes for a human to label new data is what we call adaptation latency. High adaptation latency is not simply undesirable but may be infeasible for scenarios with limited labeling time and resources. In this paper, …

Vireo@Trecvid 2016: Multimedia Event Detection, Ad-Hoc Video Search, Video To Text Description, Hao Zhang, Lei Pang, Yi-Jie Lu, Chong-Wah Ngo

Research Collection School Of Computing and Information Systems

The vireo group participates in 3 tasks: multimedia event detection, ad-hoc video search, video-to-text description. In this paper, we will separately present frameworks for these tasks and discuss experimental results.

One-Round Attribute-Based Key Exchange In The Multi-Party Setting, Yangguang Tian, Guomin Yang, Yi Mu, Kaitai Liang, Yong Yu

Research Collection School Of Computing and Information Systems

Attribute-based authenticated key exchange (AB-AKE) is a useful primitive that allows a group of users to establish a shared secret key and at the same time enables fine-grained access control. A straightforward approach to design an AB-AKE protocol is to extend a key exchange protocol using attribute-based authentication technique. However, insider security is a challenge security issue for AB-AKE in the multi-party setting and cannot be solved using the straightforward approach. In addition, many existing key exchange protocols for the multi-party setting (e.g., the well-known Burmester-Desmedt protocol) require multiple broadcast rounds to complete the protocol. In this paper, we propose …

Achieving Ind-Cca Security For Functional Encryption For Inner Products, Shiwei Zhang, Yi Mu, Guomin Yang

Research Collection School Of Computing and Information Systems

Functional encryption allows the authorised parties to reveal partial information of the plaintext hidden in a ciphertext while in conventional encryption decryption is all-or-nothing. Focusing on the functionality of inner product evaluation (i.e. given vectors xxxx and yyyy, calculate ⟨xx,yy⟩⟨xx,yy⟩), Abdalla et al. (PKC 2015) proposed a functional encryption scheme for inner product functionality (FE-IP) with s-IND-CPA security. In some recent works by Abdalla et al. (eprint: Report 2016/11) and Agrawal et al. (CRYPTO 2016), IND-CPA secure FE-IP schemes have also been proposed. In order to achieve Indistinguishable under Chosen Ciphertext Attacks (IND-CCA security) for FE-IP, in this paper, we …

Efficient Tag Path Authentication Protocol With Less Tag Memory, Hongbing Wang, Yingjiu Li, Zongyang Zhang, Yunlei Zhao

Research Collection School Of Computing and Information Systems

Logistical management has been advanced rapidly in these years, taking advantage of the broad connectivity of the Internet. As it becomes an important part of our lives, it also raises many challenging issues, e.g., the counterfeits of expensive goods pose a serious threat to supply chain management. As a result, path authentication becomes especially important in supply chain management, since it helps us maintain object pedigree and supply chain integrity. Meanwhile, tag path authentication must meet a series of security requirements, such as authentication, privacy, and unlinkability. In addition, the authentication protocol must be efficient.In 2011, the first tag path …

A Novel Covert Channel Detection Method In Cloud Based On Xsrm And Improved Event Association Algorithm, Lina Wang, Weijie Liu, Neeraj Kumar, Debiao He, Cheng Tan, Debin Gao

Research Collection School Of Computing and Information Systems

Covert channel is a major threat to the information system security and commonly found in operating systems, especially in cloud computing environment. Owing to the characteristics in cloud computing environment such as resources sharing and logic boundaries, covert channels become more varied and difficult to find. Focusing on those problems, this paper presents a universal method for detecting covert channel automatically. To achieve a global detection, we leveraged a virtual machine event record mechanism in hypervisor to gather necessary metadata. Combining the shared resources matrix methodology with events association mechanism, we proposed a distinctive algorithm that can accurately locate and …

What Permissions Should This Android App Request?, Lingfeng Bao, David Lo, Xin Xia, Shanping Li

Research Collection School Of Computing and Information Systems

As Android is one of the most popular open source mobile platforms, ensuring security and privacy of Android applications is very important. Android provides a permission mechanism which requires developers to declare sensitive resources their applications need, and users need to agree with this request when they install (for Android API level 22 or lower) or run (for Android API level 23) these applications. Although Android provides very good official documents to explain how to properly use permissions, unfortunately misuses even for the most popular permissions have been reported. Recently, Karim et al. propose an association rule mining based approach …

Spiteful, One-Off, And Kind: Predicting Customer Feedback Behavior On Twitter, Agus Sulistya, Abhishek Sharma, David Lo

Research Collection School Of Computing and Information Systems

Social media provides a convenient way for customers to express their feedback to companies. Identifying different types of customers based on their feedback behavior can help companies to maintain their customers. In this paper, we use a machine learning approach to predict a customer’s feedback behavior based on her first feedback tweet. First, we identify a few categories of customers based on their feedback frequency and the sentiment of the feedback. We identify three main categories: spiteful, one-off, and kind. Next, we build a model to predict the category of a customer given her first feedback. We use profile and …

How To Break An Api: Cost Negotiation And Community Values In Three Software Ecosystems, Christopher Bogart, Christian K\303\244stner, James Herbsleb, Ferdian Thung

Research Collection School Of Computing and Information Systems

Change introduces conict into software ecosystems: breaking changes may ripple through the ecosystem and trigger rework for users of a package, but often developers can invest additional effort or accept opportunity costs to alleviate or delay downstream costs. We performed a multiple case study of three software ecosystems with different tooling and philosophies toward change, Eclipse, R/CRAN, and Node.js/npm, to understand how developers make decisions about change and change-related costs and what practices, tooling, and policies are used. We found that all three ecosystems differ substantially in their practices and expectations toward change and that those differences can be explained …

Ownership-Hidden Group-Oriented Proofs Of Storage From Pre-Homomorphic Signatures, Yujue Wang, Qianhong Wu, Bo Qin, Xiaofeng Chen, Xinyi Huang, Jungang Lou

Research Collection School Of Computing and Information Systems

In this paper, we study the problem of secure cloud storage in a multi-user setting such that the ownership of outsourced files can be hidden against the cloud server. There is a group manager for initiating the system, who is also responsible for issuing private keys for the involved group members. All authorized members are able to outsource files to the group’s storage account at some cloud server. Although the ownership of outsourced file is preserved against the cloud server, the group manager could trace the true identity of any suspicious file for liability investigation. To address this issue, we …

On Profiling Bots In Social Media, Richard J. Oentaryo, Arinto Murdopo, Philips K. Prasetyo, Ee Peng Lim

Research Collection School Of Computing and Information Systems

The popularity of social media platforms such as Twitter has led to the proliferation of automated bots, creating both opportunities and challenges in information dissemination, user engagements, and quality of services. Past works on profiling bots had been focused largely on malicious bots, with the assumption that these bots should be removed. In this work, however, we find many bots that are benign, and propose a new, broader categorization of bots based on their behaviors. This includes broadcast, consumption, and spam bots. To facilitate comprehensive analyses of bots and how they compare to human accounts, we develop a systematic profiling …

Exposure To Tritiated Water At An Elevated Temperature: Genotoxic And Transcriptomic Effects In Marine Mussels (M. Galloprovincialis)., Lorna J. Dallas, Tim P. Bean, Andrew Turner, Brett P. Lyons, Awadhesh N. Jha

School of Geography, Earth and Environmental Sciences

Temperature is an abiotic factor of particular concern for assessing the potential impacts of radionuclides on marine species. This is particularly true for tritium, which is discharged as tritiated water (HTO) in the process of cooling nuclear institutions. Additionally, with sea surface temperatures forecast to rise 0.5 - 3.5 C in the next 30-100 years, determining the interaction of elevated temperature with radiological exposure has never been more relevant. We assessed the tissue-specific accumulation, transcriptional expression of key genes, and genotoxicity of tritiated water to marine mussels at either 15 or 25 C, over a 7 day time course with …

Molecular Tetrapods For Optoelectronic Applications, Jianzhong Yang

Chemistry and Chemical Biology ETDs

Most conjugated molecules including polymers and small molecules applied in organic solar cells (OSCs) have linear structures containing multiple aromatic groups connected in series. However, unfavorable film forming ability and grain boundaries both originated from high crystallinity of linear small molecules are detrimental to device performances. Thus, among multi-dimensional structures, tetrapodal molecules are especially interesting owing to their unique ability to mutually interlock, which prevents dislodging and provides high structural stabilities. Such molecular design can also increase absorption cross-sections and provide more extensively percolating pathways for charge transport, making such molecular tetrapods promising in OSCs applications. In my dissertation, I …

A Copula-Based Approach For The Estimation Of Wave Height Records Through Spatial Correlation, R. Jane, Valle L Dalla, D. Simmonds, A. Raby

School of Engineering, Computing and Mathematics

No abstract provided.

A General Elliptic Nonlinear System Of Multiple Functions With Application, Timothy Robertson, Joon Hyuk Kang

Faculty Publications

The purpose of this paper is to give a sufficient condition for the existence, nonexistence and uniqueness of positive solutions to a rather general type of elliptic system of the Dirichlet problem on a bounded domain Ω in Rn . We also investigate the effects of perturbation on the positive solutions to the system. The techniques used in this paper are upper-lower solutions, eigenvalues of operators, the maximum principles and spectrum estimates. The arguments also rely on some detailed properties for the solution of logistic equations. This result yields an algebraically computable criterion for the positive coexistence of competing species …

The Braking Index Of A Radio-Quiet Gamma-Ray Pulsar, C. J. Clark, H. J. Pletsch, J. Wu, L. Guillemot, F. Camilo, T. J. Johnson, M. Kerr, B. Allen, C. Aulbert, Andres Cuellar

Physics & Astronomy Faculty Publications

We report the discovery and timing measurements of PSR J1208−6238, a young and highly magnetized gamma-ray pulsar, with a spin period of 440 ms. The pulsar was discovered in gamma-ray photon data from the Fermi Large Area Telescope (LAT) during a blind-search survey of unidentified LAT sources, running on the distributed volunteer computing system Einstein@Home. No radio pulsations were detected in dedicated follow-up searches with the Parkes radio telescope, with a flux density upper limit at 1369 MHz of 30 μJy. By timing this pulsar's gamma-ray pulsations, we measure its braking index over five years of LAT observations …

The Advanced Ligo Photon Calibrators, S. Karki, Darkhan Tuyenbayev, S. Kandhasamy, B. P. Abbott, T. D. Abbott, E. H. Anders, J. Berliner, J. Betzwieser, C. Cahillane, L. Canete, Volker Quetschke

Physics & Astronomy Faculty Publications

The two interferometers of the Laser Interferometry Gravitational-wave Observatory (LIGO) recently detected gravitational waves from the mergers of binary black hole systems. Accurate calibration of the output of these detectors was crucial for the observation of these events and the extraction of parameters of the sources. The principal tools used to calibrate the responses of the second-generation (Advanced) LIGO detectors to gravitational waves are systems based on radiation pressure and referred to as photon calibrators. These systems, which were completely redesigned for Advanced LIGO, include several significant upgrades that enable them to meet the calibration requirements of second-generation gravitational wave …

Lack Of Association Between Slc30a8 Variants And Type 2 Diabetes In Mexican American Families, Hemant Kulkarni, Manju Mamtani, Juan M. Peralta, Vincent P. Diego, Thomas D. Dyer, Harald H. H. Goring, Laura Almasy, Sarah Williams-Blangero, Michael C. Mahaney, Ravindranath Duggirala, Joanne E. Curran, John Blangero

School of Medicine Publications

SLC30A8 encodes zinc transporter 8 which is involved in packaging and release of insulin. Evidence for the association of SLC30A8 variants with type 2 diabetes (T2D) is inconclusive. We interrogated single nucleotide polymorphisms (SNPs) around SLC30A8 for association with T2D in high-risk, pedigreed individuals from extended Mexican American families. This study of 118 SNPs within 50 kb of the SLC30A8 locus tested the association with eight T2D-related traits at four levels: (i) each SNP using measured genotype approach (MGA); (ii) interaction of SNPs with age and sex; (iii) combinations of SNPs using Bayesian Quantitative Trait Nucleotide (BQTN) analyses; and (iv) …

Climate In The Pilbara, Robert Sudmeyer

Bulletins 4000 -

The Pilbara is characterised by very hot summers, mild winters and low and variable rainfall. It is classified as hot desert in northern and inland areas and hot grasslands in the north-west. The Pilbara claims a number of climate records:

• seven of Western Australia’s top 10 hottest days, with Mardie recording the hottest day on record — 50.5 degrees Celsius (°C)
• most sunshine hours a day in Australia (more than 10 hours a day)
• second highest inter-annual variability in rainfall (second only to central Australia)
• the most cyclone-prone area along the Australian coastline.

During summer and early autumn (December to …

Safety Assurance Of Non-Deterministic Flight Controllers In Aircraft Applications, Alfonso Noriega

Doctoral Dissertations and Master's Theses

Loss of control is a serious problem in aviation that primarily affects General Aviation. Technological advancements can help mitigate the problem, but the FAA certification process makes certain solutions economically unfeasible. This investigation presents the design of a generic adaptive autopilot that could potentially lead to a single certification for use in several makes and models of aircraft. The autopilot consists of a conventional controller connected in series with a robust direct adaptive model reference controller. In this architecture, the conventional controller is tuned once to provide outer-loop guidance and navigation to a reference model. The adaptive controller makes unknown …

Automotive-Inspired Inceptors And Control Laws Designed For Simplified Piloted Flight, Kashif Ali

Doctoral Dissertations and Master's Theses

This thesis details the development of a simulator-based experiment in automotive- inspired controls for aircraft. The goal is to fuse the ease of drivability of a car with the flight of an aircraft. A standard automotive control hardware setup coupled with fly-by-wire control laws will allow non-pilots to fly a plane using their familiarity with driving a car. A mathematical description of the control law logic and controller implementation is presented and the human subjects' performance is measured from data collected during experimental testing of the simulator. Preliminary results indicate that non-pilots improve their path-tracking performance and reduce control activity …

Polarization Control By Using Anisotropic 3-D Chiral Structures, Menglin L.N. Chen, Li (Lijun) Jun Jiang, Wei E.I. Sha, Wallace C.H. Choy, Tatsuo Itoh

Electrical and Computer Engineering Faculty Research & Creative Works

Due to the mirror symmetry breaking, chiral structures show fantastic electromagnetic (EM) properties involving negative refraction, giant optical activity, circular dichroism and asymmetric transmission. Aligned electric and magnetic dipoles excited in chiral structures contribute to the extraordinary properties. However, the chiral structures that exhibit n -fold rotational symmetry show a limited tunability of the chirality. In this paper, we propose a compact, light, and highly tunable anisotropic chiral structure to overcome this limitation and realize a linear-to-circular polarization conversion. The anisotropy is due to simultaneous excitations of two different pairs of aligned electric and magnetic dipoles. The 3-D omega-shaped structure, …