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Articles 8881 - 8910 of 11462
Full-Text Articles in Physical Sciences and Mathematics
Accuracy And Timeliness In Ml Based Activity Recognition, Robert J. Ross, John D. Kelleher
Accuracy And Timeliness In Ml Based Activity Recognition, Robert J. Ross, John D. Kelleher
Conference papers
While recent Machine Learning (ML) based techniques for activity recognition show great promise, there remain a number of questions with respect to the relative merits of these techniques. To provide a better understanding of the relative strengths of contemporary Activity Recognition methods, in this paper we present a comparative analysis of Hidden Markov Model, Bayesian, and Support Vector Machine based human activity recognition models. The study builds on both pre-existing and newly annotated data which includes interleaved activities. Results demonstrate that while Support Vector Machine based techniques perform well for all data sets considered, simple representations of sensor histories regularly …
Re2o7-Catalyzed Reaction Of Hemiacetals And Aldehydes With O-, S-, And C-Nucleophiles, Wantanee Sittiwong, Michael W. Richardson, Charles E. Schiaffo, Thomas J. Fisher, Patrick H. Dussault
Re2o7-Catalyzed Reaction Of Hemiacetals And Aldehydes With O-, S-, And C-Nucleophiles, Wantanee Sittiwong, Michael W. Richardson, Charles E. Schiaffo, Thomas J. Fisher, Patrick H. Dussault
Chemistry Department: Faculty Publications
Re(VII) oxides catalyze the acetalization, monoperoxyacetalization, monothioacetalization and allylation of hemiacetals. The reactions, which take place under mild conditions and at low catalyst loadings, can be conducted using hemiacetals, the corresponding O-silyl ethers, and, in some cases, the acetal dimers. Aldehydes react under similar conditions to furnish good yields of dithioacetals. Reactions of hemiacetals with nitrogen nucleophiles are unsuccessful. 1,2-Dioxolan-3-ols (peroxyhemiacetals) undergo Re(VII)-promoted etherification but not allylation. Hydroperoxyacetals (1-alkoxyhydroperoxides) undergo selective exchange of the alkoxide group in the presence of either Re2O7 or a Brønsted acid.
Porous Polymer Coatings As Substrates For The Formation Of High-Fidelity Micropatterns By Quill-Like Pens, Michael Hirtz, Marcus Lyon, Wenqian Feng, Andrea E. Holmes, Harald Fuchs, Pavel A. Levkin
Porous Polymer Coatings As Substrates For The Formation Of High-Fidelity Micropatterns By Quill-Like Pens, Michael Hirtz, Marcus Lyon, Wenqian Feng, Andrea E. Holmes, Harald Fuchs, Pavel A. Levkin
Chemistry Department: Faculty Publications
We explored the potentials of microarray printing using quill-like microcantilevers onto solid supports that are typically used in microspot printing, including paper, polymeric nitrocellulose and nylon membranes. We compared these membranes with a novel porous poly(2-hydroxyethyl methacrylate-co-ethylene dimethacrylate) support (HEMA) with narrow pore size distribution in the 150 nm range, which demonstrated advantages in pattern definition, spot homogeneity, and consistent spot delivery of different dyes (phloxine B and bromophenol blue) with diameters of several micrometres. The bromophenol blue arrays on HEMA support were used to detect the presence of bovine serum albumin (BSA). In the presence of BSA, …
Generalized Analytic Fourier-Feynman Transform Of Functionals In A Banach Algebra F_(A1,A2)^(A,B), Jae Gil Choi, David Skough, Seung Jun Chang
Generalized Analytic Fourier-Feynman Transform Of Functionals In A Banach Algebra F_(A1,A2)^(A,B), Jae Gil Choi, David Skough, Seung Jun Chang
Department of Mathematics: Faculty Publications
We introduce the Fresnel type class F_(A1,A2)^(a,b).We also establish the existence of the generalized analytic Fourier-Feynman transform for functionals in the Banach algebra F_(A1,A2)^(a,b).
Usefulness Of Infeasible Solutions In Evolutionary Search: An Empirical And Mathematical Study, Lyndon While, Philip Hingston
Usefulness Of Infeasible Solutions In Evolutionary Search: An Empirical And Mathematical Study, Lyndon While, Philip Hingston
Research outputs 2013
When evolutionary algorithms are used to solve constrained optimization problems, the question arises how best to deal with infeasible solutions in the search space. A recent theoretical analysis of two simple test problems argued that allowing infeasible solutions to persist in the population can either help or hinder the search process, depending on the structure of the fitness landscape. We report new empirical and mathematical analyses that provide a different interpretation of the previous theoretical predictions: that the important effect is on the probability of finding the global optimum, rather than on the time complexity of the algorithm. We also …
Toward A Phen(Omen)Ology Of The Seasons: The Emergence Of The Indigenous Weather Knowledge Project (Iwkp), John Charles Ryan
Toward A Phen(Omen)Ology Of The Seasons: The Emergence Of The Indigenous Weather Knowledge Project (Iwkp), John Charles Ryan
Research outputs 2013
Since European settlement, the Western calendar has insufficiently accounted for the seasonal nuances and multiple temporalities of Australia. Beginning with Tim Entwistle’s recent proposal to revise the four-season Australian norm, this article traces the emergence of the Western calendar in Europe and its institutionalization ‘Down Under.’ With its emphasis on land-based calendars, the Indigenous Weather Knowledge Project (IWKP) is a partnership between Aboriginal communities and the Bureau of Meteorology aimed at preserving and promoting knowledge of the endemic seasons of Australian regions. As the most recent addition to the IWKP, the six-season Nyoongar calendar of the South-West of Western Australia …
On The Treatment Of Lumo Energies For Their Use As Descriptors, Paul Burrow, Alberto Modelli
On The Treatment Of Lumo Energies For Their Use As Descriptors, Paul Burrow, Alberto Modelli
Paul Burrow Publications
Calculated energies of lowest unoccupied molecular orbitals (LUMOs) are frequently employed as descriptors in studies of quantitative structure–activity relationships and linear free energy relationships involving electron transfer. However, the quantum chemical programs with which these are carried out, whether Hartree–Fock or density functional theory, do not treat orbitals of different character, for example, C=C π* and C-Cl σ*, consistently, nor is there consistency among different families of compounds. These problems can be ameliorated with the use of the experimental equivalent of the LUMO energy, the vertical attachment energy (VAE), or by shifting and scaling LUMO energies to a training set …
Traffic Analytics Using Probabilistic Graphical Models Enhanced With Knowledge Bases, Pramod Anantharam, Krishnaprasad Thirunarayan, Amit P. Sheth
Traffic Analytics Using Probabilistic Graphical Models Enhanced With Knowledge Bases, Pramod Anantharam, Krishnaprasad Thirunarayan, Amit P. Sheth
Kno.e.sis Publications
Graphical models have been successfully used to deal with uncertainty, incompleteness, and dynamism within many domains. These models built from data often ignore preexisting declarative knowledge about the domain in the form of ontologies and Linked Open Data (LOD) that is increasingly available on the web. In this paper, we present an approach to leverage such 'top-down' domain knowledge to enhance 'bottom-up' building of graphical models. Specifically, we propose three operations on the graphical model structure to enrich it with nodes, edges, and edge directions. We illustrate the enrichment process using traffic data from 511.org and declarative knowledge from ConceptNet. …
Advancing Data Reuse In Phyloinformatics Using An Ontology-Driven Semantic Web Approach, Maryam Panahiazar, Amit P. Sheth, Ajith Harshana Ranabahu, Rutger Vos, Jim Leebens-Mack
Advancing Data Reuse In Phyloinformatics Using An Ontology-Driven Semantic Web Approach, Maryam Panahiazar, Amit P. Sheth, Ajith Harshana Ranabahu, Rutger Vos, Jim Leebens-Mack
Kno.e.sis Publications
Phylogenetic analyses can resolve historical relationships among genes, organisms or higher taxa. Understanding such relationships can elucidate a wide range of biological phenomena, including, for example, the importance of gene and genome duplications in the evolution of gene function, the role of adaptation as a driver of diversification, or the evolutionary consequences of biogeographic shifts. Phyloinformaticists are developing data standards, databases and communication protocols (e.g. Application Programming Interfaces, APIs) to extend the accessibility of gene trees, species trees, and the metadata necessary to interpret these trees, thus enabling researchers across the life sciences to reuse phylogenetic knowledge. Specifically, Semantic Web …
A Hybrid Approach To Finding Relevant Social Media Content For Complex Domain Specific Information Needs, Delroy H. Cameron, Amit P. Sheth, Nishita Jaykumar, Gaurish Anand, Krishnaprasad Thirunarayan, Gary Alan Smith
A Hybrid Approach To Finding Relevant Social Media Content For Complex Domain Specific Information Needs, Delroy H. Cameron, Amit P. Sheth, Nishita Jaykumar, Gaurish Anand, Krishnaprasad Thirunarayan, Gary Alan Smith
Kno.e.sis Publications
While contemporary semantic search systems offer to improve classical keyword-based search, they are not always adequate for complex, domain specific information needs. Some complex search situations require knowledge of both ontological concepts as well as 'intelligible constructs' not typically modeled in ontologies. Intelligible constructs convey essential information, which may be important to the holistic information needs of information seekers. Such constructs may include notions of intensity, frequency, interval, dosage, emotion, sentiment, equivalence, synonymy, negation, parts-of-speech, etc. However, few search systems utilize both structured background knowledge (ontologies) and the aforementioned knowledge for query interpretation in domain specific searches. Instead, there is …
2013 Nebraska Groundwater Quality Monitoring Report
2013 Nebraska Groundwater Quality Monitoring Report
Nebraska Department of Environmental Quality: Reports
The 2001 Nebraska Legislature passed LB329 (Neb. Rev. Stat. §46-1304) which, in part, directed the Nebraska Department of Environmental Quality (NDEQ) to report on groundwater quality monitoring in Nebraska. Reports have been issued annually since December 2001. The text of the statute applicable to this report follows: “The Department of Environmental Quality shall prepare a report outlining the extent of ground water quality monitoring conducted by natural resources districts during the preceding calendar year. The department shall analyze the data collected for the purpose of determining whether or not ground water quality is degrading or improving and shall present the …
The Unusual Afterglow Of The Gamma-Ray Burst 100621a, J. Greiner, T. Krühler, M. Nardini, R. Filgas, A. Moin, C. De Breuck, F. Montenegro-Montes, A. Lundgren, S. Klose, P.M.J. Fonso, F. Bertoldi, J. Elliott, D.A. Kann, F. Knust, K. Menten, A. Nicuesa Guelbenzu, F. Olivares E., A. Rau, A. Rossi, P. Schady, S. Schmidl, G. Siringo, L. Spezzi, V. Sudilovsky, S.J. Tingay, Adria Updike, Z. Wang, A. Weiss, M. Wieringa, F. Wyrowski
The Unusual Afterglow Of The Gamma-Ray Burst 100621a, J. Greiner, T. Krühler, M. Nardini, R. Filgas, A. Moin, C. De Breuck, F. Montenegro-Montes, A. Lundgren, S. Klose, P.M.J. Fonso, F. Bertoldi, J. Elliott, D.A. Kann, F. Knust, K. Menten, A. Nicuesa Guelbenzu, F. Olivares E., A. Rau, A. Rossi, P. Schady, S. Schmidl, G. Siringo, L. Spezzi, V. Sudilovsky, S.J. Tingay, Adria Updike, Z. Wang, A. Weiss, M. Wieringa, F. Wyrowski
Arts & Sciences Faculty Publications
Aims. With the afterglow of GRB 100621A being the brightest detected so far in X-rays, and superb GROND coverage in the optical/near-infrared during the first few hours, an observational verification of basic fireball predictions seemed possible. Methods. In order to constrain the broad-band spectral energy distribution of the afterglow of GRB 100621A, dedicated observations were performed in the optical/near-infrared with the 7-channel Gamma-Ray Burst Optical and Near-infrared Detector (GROND) at the 2.2mMPG/ESO telescope, in the sub-millimeter band with the large bolometer array LABOCA at APEX, and at radio frequencies with ATCA. Utilizing also Swift X-ray observations, we attempt an interpretation …
Grb 091024a And The Nature Of Ultra-Long Gamma-Ray Bursts, F.J. Virgili, C.G. Mundell, V. Pal’Shin, C. Guidorzi, R. Margutti, A. Melandri, R. Harrison, S. Kobayashi, R. Chornock, A. Henden, Adria Updike, S.B. Cenko, N.R. Tanvir, I.A. Steele, A. Cucchiara, A. Gomboc, A. Levan, Z. Cano, C.J. Mottram, N.R. Clay, D. Bersier, D. KopaˇC, J. Japelj, A.V. Filippenko, W. Li, D. Svinkin, S. Golenetskii, D.H. Hartmann, P.A. Milne, G. Williams, P.T. O’Brien, D.B. Fox, E. Berger
Grb 091024a And The Nature Of Ultra-Long Gamma-Ray Bursts, F.J. Virgili, C.G. Mundell, V. Pal’Shin, C. Guidorzi, R. Margutti, A. Melandri, R. Harrison, S. Kobayashi, R. Chornock, A. Henden, Adria Updike, S.B. Cenko, N.R. Tanvir, I.A. Steele, A. Cucchiara, A. Gomboc, A. Levan, Z. Cano, C.J. Mottram, N.R. Clay, D. Bersier, D. KopaˇC, J. Japelj, A.V. Filippenko, W. Li, D. Svinkin, S. Golenetskii, D.H. Hartmann, P.A. Milne, G. Williams, P.T. O’Brien, D.B. Fox, E. Berger
Arts & Sciences Faculty Publications
We present a broadband study of gamma-ray burst (GRB) 091024A within the context of other ultra-long-duration GRBs. An unusually long burst detected by Konus–Wind (KW), Swift, and Fermi, GRB 091024A has prompt emission episodes covering ∼1300 s, accompanied by bright and highly structured optical emission captured by various rapid-response facilities, including the 2 m autonomous robotic Faulkes North and Liverpool Telescopes, KAIT, S-LOTIS, and the Sonoita Research Observatory.We also observed the burst with 8 and 10mclass telescopes and determine the redshift to be z = 1.0924 ± 0.0004. We find no correlation between the …
My Experience Exploring The Effects Of Lead (Pb +2) Toxicity In Drosophila Melanogaster Using Sociability Interaction Testing And Microarrays At The University Of Puerto Rico-Rio Piedras In San Juan, Puerto Rico, Charlton Diaz
Honors Theses
Lead is an environmental contaminant widely dispersed throughout the world. Exposure to lead causes neurological damage in humans and may be linked to neurodevelopmental pathologies such as attention deficit hyperactivity disorder, antisocial behavior, and autistic spectrum disorders (ASD). Drosophila melanogaster (fruit flies) have been used to understand the behavioral, synaptic, and molecular changes that occur after developmental exposure to lead and to study ASD-associated pathology. Flies were exposed through the mother and until eclosion to either a lead-laced medium or a control corn-based medium and were isolated until the beginning for the behavioral studies. Sociability testing was done using a …
Contents
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Title Page, Coordinating Editor's Remarks
Title Page, Coordinating Editor's Remarks
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Challenging Pre-Service Students' Teaching Perspectives In An Inquiry-Focused Program, J. L. Pecore, A. Shelton
Challenging Pre-Service Students' Teaching Perspectives In An Inquiry-Focused Program, J. L. Pecore, A. Shelton
Journal of Mathematics and Science: Collaborative Explorations
Inquiry teaching based on constructivist learning theory has been an emphasis in pre-service education for over a decade. In general, a developmental teaching perspective supports inquiry-based instruction where teachers view learners as constructors of knowledge and teaching as providing questions, problems, and challenges that form a bridge from the learners' prior knowledge to a new, more sophisticated form of reasoning. Since teaching perspectives influence student learning, teacher effectiveness, and teacher attrition, challenging pre-service teachers to overcome experience-based convictions of a transmission perspective is necessary in teacher education. In this study, we examined the teaching perspectives of secondary, pre-service methods students …
How Does Leadership Matter? Developing And Teaching A Definition Of Hands-On Science, A Prerequisite For Effective Inquiry Teaching, D. R. Sterling
How Does Leadership Matter? Developing And Teaching A Definition Of Hands-On Science, A Prerequisite For Effective Inquiry Teaching, D. R. Sterling
Journal of Mathematics and Science: Collaborative Explorations
This descriptive case study describes leadership skills and planning for setting clear directions by program leaders for a statewide professional development initiative to extend improvement in science teaching and learning. For science teachers and leaders in Virginia, a critical part of setting clear goals that everyone can understand is defining key science terms. One of the four key terms, "hands-on science," is defined here. Materials to develop teachers' understanding of the term for effective implementation of classroom inquiry activities are shared, along with a rubric for evaluation by and for teachers. Understanding of the term "hands-on science" is necessary before …
Unlocking Undergraduate Problem Solving, D. Cline, K. Peterson
Unlocking Undergraduate Problem Solving, D. Cline, K. Peterson
Journal of Mathematics and Science: Collaborative Explorations
It is difficult to find good problems for undergraduates. In this article, we explore an interesting problem that can be used in virtually any mathematics course. We then offer natural generalizations, state and prove some related results, and ultimately end with several open problems suitable for undergraduate research. Finally, we attempt to shed some light on what makes a problem interesting.
Aims & Scope
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Nominal Regular Expressions For Languages Over Infinite Alphabets, Alexander Kurz, Tomoyuki Suzuki, Emilio Tuosto
Nominal Regular Expressions For Languages Over Infinite Alphabets, Alexander Kurz, Tomoyuki Suzuki, Emilio Tuosto
Engineering Faculty Articles and Research
We propose regular expressions to abstractly model and study properties of resource-aware computations. Inspired by nominal techniques – as those popular in process calculi – we extend classical regular expressions with names (to model computational resources) and suitable operators (for allocation, deallocation, scoping of, and freshness conditions on resources). We discuss classes of such nominal regular expressions, show how such expressions have natural interpretations in terms of languages over infinite alphabets, and give Kleene theorems to characterise their formal languages in terms of nominal automata.
2013-2014 Nova Southeastern University Undergraduate Student Catalog, Nova Southeastern University
2013-2014 Nova Southeastern University Undergraduate Student Catalog, Nova Southeastern University
Undergraduate Programs Course Catalogs
No abstract provided.
Using Power-Law Properties Of Social Groups For Cloud Defense And Community Detection, Justin L. Rice
Using Power-Law Properties Of Social Groups For Cloud Defense And Community Detection, Justin L. Rice
Doctoral Dissertations
The power-law distribution can be used to describe various aspects of social group behavior. For mussels, sociobiological research has shown that the Lévy walk best describes their self-organizing movement strategy. A mussel's step length is drawn from a power-law distribution, and its direction is drawn from a uniform distribution. In the area of social networks, theories such as preferential attachment seek to explain why the degree distribution tends to be scale-free. The aim of this dissertation is to glean insight from these works to help solve problems in two domains: cloud computing systems and community detection.
Privacy and security are …
Connecting Big Data With Big Decisions: Ideas For Synthesizing Analytics And Decision Analysis, Jeffrey Keisler
Connecting Big Data With Big Decisions: Ideas For Synthesizing Analytics And Decision Analysis, Jeffrey Keisler
Management Science and Information Systems Faculty Publication Series
This paper describes an approach to connect decision analysis models with outputs of analytic methods applied to various types of big data. Decision analysis models focus on issues of concern to a decision maker and incorporate use of a range of methods and axioms to develop insights about what the decision maker should do. In particular, decision analysis models typically use subjective judgments from the decision maker to describe beliefs about the likelihood of events and the desirability of outcomes. In order for human judgments to be improved by the availability of large amounts of data and processing power, it …
Synthesis And Fluorescence Studies Of Ph-Responsive Rhodamine B Derivatives, William Lawrence Czaplyski
Synthesis And Fluorescence Studies Of Ph-Responsive Rhodamine B Derivatives, William Lawrence Czaplyski
Dissertations, Theses, and Masters Projects
No abstract provided.
A Gentle Introduction To Pythontex, Andrew Mertz, William Slough
A Gentle Introduction To Pythontex, Andrew Mertz, William Slough
Faculty Research and Creative Activity
No abstract provided.
Symmetric Random Walks On Homeo+(R), B. Deroin, V. Klepstyn, A. Navas, Kamlesh Parwani
Symmetric Random Walks On Homeo+(R), B. Deroin, V. Klepstyn, A. Navas, Kamlesh Parwani
Faculty Research and Creative Activity
We study symmetric random walks on finitely generated groups of orientation-preserving homeomorphisms of the real line. We establish an oscillation property for the induced Markov chain on the line that implies a weak form of recurrence. Except for a few special cases, which can be treated separately, we prove a property of "global stability at a finite distance": roughly speaking, there exists a compact interval such that any two trajectories get closer and closer whenever one of them returns to the compact interval. The probabilistic techniques employed here lead to interesting results for the study of group actions on the …
Mining Diversified Decision Trees Across Multiple Datasets To Capture Similarities And Alignable Differences, Qian Han
Browse all Theses and Dissertations
This dissertation studies the problem of mining shared and alignable difference knowledge structures across multiple datasets/applications. Shared and alignable difference knowledge structures are important for identifying analogies between application domains and for forming new hypothesis in challenging research applications, and for assessing the degree and types of knowledge-level similarities and differences between application domains for use in learning transfer. Generally speaking, shared knowledge structures characterize underlying datasets and highlight conceptual-level structural similarities among the datasets. This dissertation studies the mining of shared decision trees, which are a special type of shared knowledge structures. We first consider building one shared decision …
The Enhancement Of Peroxide-Cured Fluoroelastomer Rubber To Metal Bonding, Richard Hunter Cooke Iii
The Enhancement Of Peroxide-Cured Fluoroelastomer Rubber To Metal Bonding, Richard Hunter Cooke Iii
Browse all Theses and Dissertations
A "combi-cured&" fluoroelastomer (FKM) rubber formulation was designed to yield 100% cohesive rubber failure when cured to cold-rolled steel with derivatives of polymeric silane adhesives. Three different categories of adhesives were tested: Unsaturated Polymeric Silane with Phosphonium Salt (UPSP-D), Unsaturated Polymeric Silane (UPS-L), and Saturated Polymeric Silane (SPS-L). Adhesion Inserts molded using ASTM Method D429 Method C all consistently yielded 100% cohesive rubber failure and showed adhesion strength in the range of 700 to 800 psi after being pulled at 2" per minute until break. After obtaining consistent 100% rubber failure, a design of experiment (DOE) was implemented to determine …
Improving Performance By Re-Rating In The Dynamic Estimation Of Rater Reliability, Alexey Tarasov, Sarah Jane Delany, Brian Macnamee
Improving Performance By Re-Rating In The Dynamic Estimation Of Rater Reliability, Alexey Tarasov, Sarah Jane Delany, Brian Macnamee
Conference papers
Nowadays crowdsourcing is widely used in supervised machine learning to facilitate the collection of ratings for unlabelled training sets. In order to get good quality results it is worth rejecting results from noisy/unreliable raters, as soon as they are discovered. Many techniques for filtering unreliable raters rely on the presentation of training instances to the raters identified as most accurate to date. Early in the process, the true rater reliabilities are not known and unreliable raters may be used as a result. This paper explores improving the quality of ratings for train- ing instances by performing re-rating. The re-rating relies …