3,202 research outputs found

    A Strategy To Increase The International Visibility And Participation Of A State University

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    This paper presents a strategy for expanding a university’s international participation. An effort to correct international exchange imbalances evolved into a unique international program and partnership with Walt Disney World

    Few-qubit quantum-classical simulation of strongly correlated lattice fermions

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    We study a proof-of-principle example of the recently proposed hybrid quantum-classical simulation of strongly correlated fermion models in the thermodynamic limit. In a "two-site" dynamical mean-field theory (DMFT) approach we reduce the Hubbard model to an effective impurity model subject to self-consistency conditions. The resulting minimal two-site representation of the non-linear hybrid setup involves four qubits implementing the impurity problem, plus an ancilla qubit on which all measurements are performed. We outline a possible implementation with superconducting circuits feasible with near-future technology.Comment: 20 pages, 10 figure

    The Determination Of The Effectiveness Of A Marketing Promotional Activity

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    This paper presents the effectiveness of a promotional effort to increase target-market awareness. The marketing activities included survey design and implementation, conducting focus groups, developing ads, and evaluating the promotional activity. In an effort to acquire knowledge and experience, the students in a class (Promotional Management) were given the opportunity to offer a research service to a client’s products and services. The knowledge obtained by the students will enhance them as they enter the workforce and the experience will aid the students in competing for positions in marketing. The service provided to the client is invaluable because of the pertinent information that was gained about non business majors and the exposure that was gained from the promotional campaign activities

    Achieving National Recognition Through Experiential Learning

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    A student marketing organization was created as an internship project sponsored by General Motors (GM). Students gained hands-on experience in marketing the products and services of a local General Motors dealership selected by GM. The finalist team members presented the results of the project to a panel of GM representatives. The plan and its implementation which resulted in first place in a nationwide competition will be discussed. This paper will evaluate the project and determine the benefits to students, the faculty member, the University, and the community

    Terry Labonte Chevrolet Dealer Targets College Student Market

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    This case presents the problem of a new owner of an existing dealership coupled with a move to a new location/new facility within the city. The marketing problem is presented whereby a college marketing class is challenged to create a promotional event on campus to make students aware of the dealership and its location. Additionally, two surveys were administered to gain insight of the college student in regard to the dealership and its products/services. Questions/assignments are posed for students appropriate for a marketing promotions course. The questions/assignments address the goals stated by the manager of the dealership

    Learning Communities: A Business School Perspective

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    This paper discusses the organization and operation of a university learning community program at the University of North Carolina at Greensboro (UNCG). After several years, the program administrator and certain of the faculty and staff reflected on the achievements of the program. The learning community concept is discussed as well as the nature of the learning activities both general and those specific to the business school. The program reported higher levels of student retention and students reported higher involvement in leadership skill development and the UNCG community than students who were not in the learning community program

    Challenges Of The UNCG/Tec De Monterrey/Disney College Program

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    This report is based on a study of participants in an international, academic exchange program that includes a Walt Disney World internship. The University of North Carolina at Greensboro (UNCG) was a principal partner in developing the UNCG/Tec de Monterrey/Disney College Program (UNCG Program). This cooperative arrangement involves students enrolled in degree programs at one of the Tec de Monterrey campuses in Mexico. The report analyzes the challenges faced by the UNCG Program Director and assisting faculty in the early development of the UNCG Program as well as the challenges presented since the Program has matured

    An Experimental Investigation of the Scaling of Columnar Joints

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    Columnar jointing is a fracture pattern common in igneous rocks in which cracks self-organize into a roughly hexagonal arrangement, leaving behind an ordered colonnade. We report observations of columnar jointing in a laboratory analog system, desiccated corn starch slurries. Using measurements of moisture density, evaporation rates, and fracture advance rates as evidence, we suggest an advective-diffusive system is responsible for the rough scaling behavior of columnar joints. This theory explains the order of magnitude difference in scales between jointing in lavas and in starches. We investigated the scaling of average columnar cross-sectional areas due to the evaporation rate, the analog of the cooling rate of igneous columnar joints. We measured column areas in experiments where the evaporation rate depended on lamp height and time, in experiments where the evaporation rate was fixed using feedback methods, and in experiments where gelatin was added to vary the rheology of the starch. Our results suggest that the column area at a particular depth is related to both the current conditions, and hysteretically to the geometry of the pattern at previous depths. We argue that there exists a range of stable column scales allowed for any particular evaporation rate.Comment: 12 pages, 11 figures, for supporting online movies, go to http://www.physics.utoronto.ca/nonlinear/movies/starch_movies.htm

    Does the Sverdrup critical depth model explain bloom dynamics in estuaries?

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    In this paper we use numerical models of coupled biological-hydrodynamic processes to search for general principles of bloom regulation in estuarine waters. We address three questions: What are the dynamics of stratification in coastal systems as influenced by variable freshwater input and tidal stirring? How does phytoplankton growth respond to these dynamics? Can the classical Sverdrup Critical Depth Model (SCDM) be used to predict the timing of bloom events in shallow coastal domains such as estuaries? We present results of simulation experiments which assume that vertical transport and net phytoplankton growth rates are horizontally homogeneous. In the present approach the temporally and spatially varying turbulent diffusivities for various stratification scenarios are calculated using a hydrodynamic code that includes the Mellor-Yamada 2.5 turbulence closure model. These diffusivities are then used in a time- and depth-dependent advection-diffusion equation, incorporating sources and sinks, for the phytoplankton biomass. Our modeling results show that, whereas persistent stratification greatly increases the probability of a bloom, semidiurnal periodic stratification does not increase the likelihood of a phytoplankton bloom over that of a constantly unstratified water column. Thus, for phytoplankton blooms, the physical regime of periodic stratification is closer to complete mixing than to persistent stratification. Furthermore, the details of persistent stratification are important: surface layer depth, thickness of the pycnocline, vertical density difference, and tidal current speed all weigh heavily in producing conditions which promote the onset of phytoplankton blooms. Our model results for shallow tidal systems do not conform to the classical concepts of stratification and blooms in deep pelagic systems. First, earlier studies (Riley, 1942, for example) suggest a monotonic increase in surface layer production as the surface layer shallows. Our model results suggest, however, a nonmonotonic relationship between phytoplankton population growth and surface layer depth, which results from a balance between several \u27\u27competing\u27\u27 processes, including the interaction of sinking with turbulent mixing and average net growth occurring within the surface layer. Second, we show that the traditional SCDM must be refined for application to energetic shallow systems or for systems in which surface layer mixing is not strong enough to counteract the sinking loss of phytoplankton. This need for refinement arises because of the leakage of phytoplankton from the surface layer by turbulent diffusion and sinking, processes not considered in the classical SCDM. Our model shows that, even for low sinking rates and small turbulent diffusivities, a significant percentage of the phytoplankton biomass produced in the surface layer can be lost by these processes

    Excitation-wavelength-dependent small polaron trapping of photoexcited carriers in α-Fe_2O_3

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    Small polaron formation is known to limit ground-state mobilities in metal oxide photocatalysts. However, the role of small polaron formation in the photoexcited state and how this affects the photoconversion efficiency has yet to be determined. Here, transient femtosecond extreme-ultraviolet measurements suggest that small polaron localization is responsible for the ultrafast trapping of photoexcited carriers in haematite (α-Fe_2O_3). Small polaron formation is evidenced by a sub-100 fs splitting of the Fe 3p core orbitals in the Fe M_(2,3) edge. The small polaron formation kinetics reproduces the triple-exponential relaxation frequently attributed to trap states. However, the measured spectral signature resembles only the spectral predictions of a small polaron and not the pre-edge features expected for mid-gap trap states. The small polaron formation probability, hopping radius and lifetime varies with excitation wavelength, decreasing with increasing energy in the t_(2g) conduction band. The excitation-wavelength-dependent localization of carriers by small polaron formation is potentially a limiting factor in haematite’s photoconversion efficiency
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