Physical Sciences and Mathematics Commons^™

Spectroscopic Studies Applied To Uvis Observations Of Titan, Y. Benilan, F. Capalbo, Et. Es-Sebbar, N. Fray, A. Jolly, M-C. Gazeau, J-C. Guillemin, M. Schwell

Dr. Et-touhami Es-sebbar

No abstract provided.

Assessment Of Society's Awareness, Acceptance, And Demand For Robotic Wait Staff In Restaurant Operations, Jeffrey Parrent

Regis University Student Publications (comprehensive collection)

This research study consists of an assessment of participants' awareness of robotics in general and also their acceptance and consumer demand for mobile, humanoid robots in the role of robotic waiters in restaurants. The study also includes the awareness and consumer demand for Microsoft Surface Computers to be potentially used as restaurant tables capable of electronic order entry, payment, and entertainment. The social impacts of such high technology upon the human occupation of waiter or waitress were also examined relative to the resistance to automation from current human wait staff. The overall results of the study were luke-warm demand for …

Poset Pinball, Gkm-Compatible Subspaces, And Hessenberg Varieties, Megumi Harada, Julianna Tymoczko

Mathematics Sciences: Faculty Publications

This paper has three main goals. First, we set up a general framework to address the problem of constructing module bases for the equivariant cohomology of certain subspaces of GKM spaces. To this end we introduce the notion of a GKM-compatible subspace of an ambient GKM space. We also discuss poset-upper-triangularity, a key combinatorial notion in both GKM theory and more generally in localization theory in equivariant cohomology. With a view toward other applications, we present parts of our setup in a general algebraic and combinatorial framework. Second, motivated by our central problem of building module bases, we introduce a …

Intelligent Computational Argumentation For Evaluating Performance Scores In Multi-Criteria Decision Making, Xiaoqing Frank Liu, Rubal Wanchoo, Ravi Santosh Arvapally

Computer Science Faculty Research & Creative Works

Multi-Criteria decision making (MCDM), is a discipline aimed at assisting multiple stakeholders in contemplating a decision paradigm in an uncertain environment. the decision analysis to be performed involves numerous alternative positions assessed under varied criterion. a performance score is assigned for each alternative in terms of every criterion, and it represents satisfaction of the criteria by that alternative. in real applications, performance scores are sometimes hard to determine, and they are often subjective. We have developed an intelligent computational argumentation approach for dealing with the problem of uncertainty in resolving the subjective scores. in this approach, an argumentation tree is …

Observation And Analysis Of The Hydrogen 21-Cm Line Using A Small Radio Telescope, Lisa Friederich

Honors Capstone Projects and Theses

No abstract provided.

Adsorption Studies By Pulsed Streaming Potentials In Microfluidic Channels, Thutrang Nguyen

Theses and Dissertations

In this work, an instrument for measuring pulsed streaming potentials was constructed and optimized for analytical and teaching applications. This thesis is divided in three chapters, the first one deals with the construction of the instrument, the second describes a microfluidic experiment designed for undergraduate and high school students using this instrument, and the third one shows an application of pulsed streaming potential measurements in the detection of heparin. Streaming potential is the electric field generated when a liquid is forced to flow by a pressure gradient through a channel or other stationary charged surfaces.1,2 These measurements were done in …

A Feature-Based Approach For Processing Nanoscale Images, Gregory Roughton, Aparna Varde, Stefan Robila, Jianyu Liang

Department of Computer Science Faculty Scholarship and Creative Works

Nanotechnology is a rapidly emerging field in which the material structures are of the size 100 nanometers or smaller. Thus, analyzing images at the nanoscale level is a challenging task. Users in this field are interested in image analysis and processing to draw conclusions such as the impact of various experimental conditions on the nature of the image and consequently their usefulness in several applications. This motivates our work that involves designing a system that will not only recognize similarities and differences among images, but do so efficiently and accurately. Features are representative of the manner in which images are …

Assessing The Impact Of An Organic Restoration Structure On Boat Wake Energy, Jean Ellis, Douglas Sherman, Bernard Bauer, Jeffrey Hart

Jean Taylor Ellis

No abstract provided.

Protocols For Characterizing Aeolian Mass-Flux Profiles, Jean Ellis, Bailiang Li, Eugene Farrell, Douglas Sherman

Jean Taylor Ellis

No abstract provided.

Measuring The Transport Of Aeolian Sand With A Microphone System, Jean Ellis, Rebecca Morrison, Barry Priest

Jean Taylor Ellis

No abstract provided.

Depth Compensation For Pressure Transducer Measurements Of Boat Wakes, Jean Ellis, Douglas Sherman, Bernard Bauer

Jean Taylor Ellis

No abstract provided.

Retention Of Beach Sands By Dams And Debris Basins In Southern California, Douglas Sherman, Kamron Barron, Jean Ellis

Jean Taylor Ellis

No abstract provided.

Effects Of Sampling Frequency On Wave Characterization, Jean Ellis, Douglas Sherman

Jean Taylor Ellis

No abstract provided.

A Coastal Environment Field And Laboratory Activity For An Undergraduate Geomorphology Course, Jean Ellis, Paul Rindfleisch

Jean Taylor Ellis

A field and laboratory exercise for an undergraduate geomorphology class is described that focuses on the beach. The project requires one day of fieldwork and two laboratory sessions. In the field, students measure water surface fluctuations (waves) with a pressure sensor, survey beach profiles, collect sediment samples, and observe the beach state. In the laboratory, students wash and dry sediments, complete a grain size analysis, and determine sediment volumes. Students produce a report that includes analysis of wave data and beach profiles and a discussion of their findings.

Wave Transformation Across A Rock Platform, Belinho, Portugal, Eugene Farrell, Helena Granja, Lorenzo Cappietti, Jean Ellis, Bailiang Li, Douglas Sherman

Jean Taylor Ellis

No abstract provided.

Increasing Cubesat Downlink Capacity With Store-And-Forward Routing And Data Mules, Trevor Koritza, John M. Bellardo

Computer Science and Software Engineering

Pico-satellites have recently gained substantial traction in research and educational communities due to their relatively low cost. The largest factor in keeping the cost down, their small size, also poses their biggest engineering challenge. The tiny, low power radios used to communicate with earth have extremely slow data rates. A typical pico satellite is within communication range of the ground station for approximately 40 minutes per day with a theoretical maximum data rate of 1200 bps. At this speed a high resolution digital photograph can take weeks to download. This paper presents a novel communication protocol that allows a sparse …

A Unified Approach To Modeling Multivariate Binary Data Using Copulas Over Partitions, Bruce J. Swihart, Brian Caffo, Ciprian Crainiceanu

Johns Hopkins University, Dept. of Biostatistics Working Papers

Many seemingly disparate approaches for marginal modeling have been developed in recent years. We demonstrate that many current approaches for marginal modeling of correlated binary outcomes produce likelihoods that are equivalent to the proposed copula-based models herein. These general copula models of underlying latent threshold random variables yield likelihood based models for marginal fixed effects estimation and interpretation in the analysis of correlated binary data. Moreover, we propose a nomenclature and set of model relationships that substantially elucidates the complex area of marginalized models for binary data. A diverse collection of didactic mathematical and numerical examples are given to illustrate …

Inspiring Creative Solutions: An Experimental Investigation Of Three Ideation Methods In Generating Creative Product, Thomas P. Hanlon

College of Computing and Digital Media Dissertations

This study examines strategic, collaborative decision making with the goal of producing more creative solutions. Our experimental approach compares the results of three methods of ideation: manual free brainstorming, manual carousel brainstorming, and electronic carousel brainstorming (as implemented by a group support system). Our finding is that manual and electronic carousel brainstorming yield more creative solutions than does free brainstorming. However, there is little difference between the former methods. Both the manual and electronic forms of carousel brainstorming are equally effective at yielding creative solutions. Strategic, collaborative decision making, when well implemented, results in full consideration of the operational environment …

Environmental Assessment Fontenelle Community Renovation, Seedskadee Project, Lincoln County, Wyoming, United States Department Of The Interior, Bureau Of Reclamation

Environmental Assessments (WY)

The Seedskadee Project is a participating project in the Colorado River Storage Project. Principle features of the project are the Fontenelle Dam, Powerplant, and Reservoir. The project is located on the Green River some 24 miles southeast of LaBarge, Wyoming in Lincoln County. The dam is located at latitude: 42.0285593 - longitude: -110.0604315. The project features, along with worker housing, were built beginning in 1961 and completed in 1964. The houses and associated infrastructure (road) are in need of extensive renovation. Reclamation conducted a value engineering study to review options to meet the need for improved employee housing, and this …

Fastmedusa: A Parallelized Tool To Infer Gene Regulatory Networks, Serdar Bozdag, Aiguo Li, Stefan Wuchty, Howard A. Fine

Mathematics, Statistics and Computer Science Faculty Research and Publications

Motivation: In order to construct gene regulatory networks of higher organisms from gene expression and promoter sequence data efficiently, we developed FastMEDUSA. In this parallelized version of the regulatory network-modeling tool MEDUSA, expression and sequence data are shared among a user-defined number of processors on a single multi-core machine or cluster. Our results show that FastMEDUSA allows a more efficient utilization of computational resources. While the determination of a regulatory network of brain tumor in Homo sapiens takes 12 days with MEDUSA, FastMEDUSA obtained the same results in 6 h by utilizing 100 processors. Availability: Source code and documentation of …

2,4,6-Triphenyl­Aniline, Onome Ugono, Stephanie Cowin, Alicia Beatty

Chemistry & Biochemistry Faculty Works

Individual mol­ecules of the title compound, C24H19N, do not participate in hydrogen-bonding inter­actions due to the steric bulk of the phenyl rings ortho to the amine. The dihedral angles between the central ring and the pendant rings are 68.26 (10), 55.28 (10) and 30.61 (11)°.

2,4,6-Triphenyl­Aniline, Onome Ugono, Stephanie Cowin, Alicia M. Beatty

Alicia Beatty

Deconvolution Of U Channel Magnetometer Data: Experimental Study Of Accuracy, Resolution, And Stability Of Different Inversion Methods, Mike J. Jackson, Julie A. Bowles, Ioan Lascu, Peter A. Solheid

Geosciences Faculty Articles

We explore the effects of sampling density, signal/noise ratios, and position-dependent measurement errors on deconvolution calculations for u channel magnetometer data, using a combination of experimental and numerical approaches. Experiments involve a synthetic sample set made by setting hydraulic cement in a 30-cm u channel and slicing the hardened material into ~2-cm lengths, and a natural lake sediment u channel sample. The cement segments can be magnetized and measured individually, and reassembled for continuous u channel measurement and deconvolution; the lake sediment channel was first measured continuously and then sliced into discrete samples for individual measurement. Each continuous data set …

Synthesis, Functionalization And Characterization Of Dual Mode Nanoparticles For Biomedical Applications, Farah Radwan

Theses and Dissertations

Three different approaches were used to prepare dual mode nanoparticles using a previously described reverse micelle technique. Superparamagnetic Fe@FeOx core shell nanoparticles were chosen to be the magnetic component for all three dual mode systems. In the first type of particles, 2- amino-1,3- propane diol (APD) was used as a functionalization ligand to stabilize the surface of the particles and its functional amino group also provided a binding site for the attachment of a fluorescent probe. The TEM analysis showed that the APD coated particles have a size range of 8-13 nm while XPS and MALDI measurements confirmed the presence …

The Cosmos Out Your Back Door, Shane L. Larson

Public Talks

No abstract provided.

Collaborative Research: Grounding-Line Retreat In The Southern Ross Sea - Constraints From Scott Glacier, Brenda L. Hall

University of Maine Office of Research Administration: Grant Reports

This award supports a project to investigate late Pleistocene and Holocene changes in Scott Glacier, a key outlet glacier that flows directly into the Ross Sea just west of the present-day West Antarctic Ice Sheet (WAIS) grounding line. The overarching goals are to understand changes in WAIS configuration in the Ross Sea sector at and since the last glacial maximum (LGM) and to determine whether Holocene retreat observed in the Ross Embayment has ended or if it is still ongoing. To address these goals, moraine and drift sequences associated with Scott Glacier will be mapped and dated and ice thickness, …

Brown Carbon In Tar Balls From Smoldering Biomass Combustion, R. K. Chakrabarty, H. Moosmüller, L. W.A. Chen, K. Lewis, W. P. Arnott, C. Mazzoleni, M. K. Dubey, C. E. Wold, W. M. Hao, S. M. Kreidenweis

Michigan Tech Publications

We report the direct observation of laboratory production of spherical, carbonaceous particles-"tar balls"-from smoldering combustion of two commonly occurring dry mid-latitude fuels. Real-time measurements of spectrally varying absorption Ångström coefficients (AAC) indicate that a class of light absorbing organic carbon (OC) with wavelength dependent imaginary part of its refractive index-optically defined as "brown carbon"-is an important component of tar balls. The spectrum of the imaginary parts of their complex refractive indices can be described with a Lorentzian-like model with an effective resonance wavelength in the ultraviolet (UV) spectral region. Sensitivity calculations for aerosols containing traditional OC (no absorption at visible …

On Flat Polyhedra Deriving From Alexandrov's Theorem, Joseph O'Rourke

Computer Science: Faculty Publications

We show that there is a straightforward algorithm to determine if the polyhedron guaranteed to exist by Alexandrov's gluing theorem is a degenerate flat polyhedron, and to reconstruct it from the gluing instructions. The algorithm runs in O(n³) time for polygons whose gluings are specified by n labels.

Energy-Efficient Data Management In Wireless Sensor Networks, Chunyu Ai

Computer Science Dissertations

Wireless Sensor Networks (WSNs) are deployed widely for various applications. A variety of useful data are generated by these deployments. Since WSNs have limited resources and unreliable communication links, traditional data management techniques are not suitable. Therefore, designing effective data management techniques for WSNs becomes important. In this dissertation, we address three key issues of data management in WSNs. For data collection, a scheme of making some nodes sleep and estimating their values according to the other active nodes’ readings has been proved energy-efficient. For the purpose of improving the precision of estimation, we propose two powerful estimation models, Data …

Charged, Rotating Black Holes In Higher Dimensions, Christopher Bruce Verhaaren

Theses and Dissertations

We present a method for solving the Einstein-Maxwell equations in a five dimensional, asymptotically flat, black hole spacetime with three commuting Killing vector fields. In particular, we show that by reducing the dimension of the Einstein-Maxwell equations in a Kaluza-Klein like manner we can determine the components of the metric and vector potential which lie in the direction of the Killing vector fields. These components are determined by nine scalar fields each of which satisfy a partial differential equation in two variables. These equations take the form of an elliptic operator set equal to a nonlinear source. We find evidence …