Digital Commons Network^™

The Alabama Digital Preservation Network (Adpnet), Aaron Trehub

Against the Grain

No abstract provided.

People Profile: Aaron Trehub, Editor

Against the Grain

No abstract provided.

Taking Charge: Preserving Our Digital Heritage Part I, Amy Kohrman

Against the Grain

No abstract provided.

People Profile: Heather Ruland Staines, Editor

Against the Grain

No abstract provided.

Springer's Ebook Preservation Strategy, Heather Ruland Staines

Against the Grain

No abstract provided.

Coherent Anti-Stokes Raman Scattering Imaging Of Lipids In Cancer Metastasis., Thuc T. Le, Terry B. Huff, Ji-Xin Cheng

Weldon School of Biomedical Engineering Faculty Publications

Background

Lipid-rich tumours have been associated with increased cancer metastasis and aggressive clinical behaviours. Nonetheless, pathologists cannot classify lipid-rich tumours as a clinically distinctive form of carcinoma due to a lack of mechanistic understanding on the roles of lipids in cancer development.

Methods

Coherent anti-Stokes Raman scattering (CARS) microscopy is employed to study cancer cell behaviours in excess lipid environments in vivo and in vitro. The impacts of a high fat diet on cancer development are evaluated in a Balb/c mice cancer model. Intravital flow cytometry and histology are employed to enumerate cancer cell escape to the bloodstream and …

Using Least Median Of Squares For Structural Superposition Of Flexible Proteins, Yu-Shen Liu, Yi Fang, Karthik Ramani

School of Mechanical Engineering Faculty Publications

Background

The conventional superposition methods use an ordinary least squares (LS) fit for structural comparison of two different conformations of the same protein. The main problem of the LS fit that it is sensitive to outliers, i.e. large displacements of the original structures superimposed.

Results

To overcome this problem, we present a new algorithm to overlap two protein conformations by their atomic coordinates using a robust statistics technique: least median of squares (LMS). In order to effectively approximate the LMS optimization, the forward search technique is utilized. Our algorithm can automatically detect and superimpose the rigid core regions of two …

Flux Balance Analysis Of Primary Metabolism In Chlamydomonas Reinhardtii, Nanette R. Boyle, John A. Morgan

School of Chemical Engineering Faculty Publications

Background

Photosynthetic organisms convert atmospheric carbon dioxide into numerous metabolites along the pathways to make new biomass. Aquatic photosynthetic organisms, which fix almost half of global inorganic carbon, have great potential: as a carbon dioxide fixation method, for the economical production of chemicals, or as a source for lipids and starch which can then be converted to biofuels. To harness this potential through metabolic engineering and to maximize production, a more thorough understanding of photosynthetic metabolism must first be achieved. A model algal species, C. reinhardtii, was chosen and the metabolic network reconstructed. Intracellular fluxes were then calculated using …

Disaster Response After Hurricane Katrina: A Model For An Academic-Community Partnership In Mississippi., Elizabeth Richards, Julie Cowan Novak, Lynn Davis

School of Nursing Faculty Publications

Team Reach Out Biloxi is a nursing student-initiated service-learning project with the goal of providing ongoing assistance to the victims of Hurricane Katrina. On six different occasions from 2005 to 2008, Purdue nursing students integrated their leadership skills with application of public health knowledge, compassion, and concern as they worked in partnership with the Gulfport region Coastal Family Health Clinics. This paper reviews the service-learning framework, course planning, and implementation of a three-year post-hurricane disaster project.

Gold Nanorods As Contrast Agents For Biological Imaging: Optical Properties, Surface Conjugation And Photothermal Effects, Ling Tong, Qingshan Wei, Alexander Wei, Ji-Xin Cheng

Other Nanotechnology Publications

Gold nanorods (NRs) have plasmon-resonant absorption and scattering in the near-infrared (NIR) region, making them attractive probes for in vitro and in vivo imaging. In the cellular environment, NRs can provide scattering contrast for darkfield microscopy, or emit a strong two-photon luminescence due to plasmon-enhanced two-photon absorption. NRs have also been employed in biomedical imaging modalities such as optical coherence tomography or photoacoustic tomography. Careful control over surface chemistry enhances the capacity of NRs as biological imaging agents by enabling cell-specific targeting, and by increasing their dispersion stability and circulation lifetimes. NRs can also efficiently convert optical energy into heat, …

Microfluidic Pumping Based On Traveling-Wave Dielectrophoresis, D Liu, S V. Garimella

CTRC Research Publications

This paper presents a microfluidic pumping approach using traveling-wave dielectrophoresis (twDEP) of microparticles. With this approach, the flow is generated directly in the microfluidic devices by inducing strong electromechanical effects in the fluid using integrated microelectrodes. The fluidic driving mechanisms due to the particle-fluid and particle-particle interactions under twDEP are analyzed, and the induced flow field is obtained from numerical simulations. Experimental measurements of the flow velocity in a prototype DEP micropumping device show satisfactory agreement with the numerical predications. Results from this work indicate that the DEP-induced micropumping scheme holds great promise for devising versatile, self-contained microscale fluidic delivery …

A Transfer Matrix Method For Estimating The Dispersion And Attenuation Of Plane Waves In A Standing Wave Tube, J Stuart Bolton, Kang Hou

Publications of the Ray W. Herrick Laboratories

No abstract provided.

Next Generation Owls: Customized Solutions And The Move Toward Open-Sourcing, Matthew J. Gilchrist, Tammy Conard-Salvo

Purdue Writing Lab/Purdue OWL Presentations

This session from the 2009 Conference on College Composition and Communication (CCCC) identifies technologies for next generation online writing centers, describing customized solutions for online tutoring and the potential for making these into open-source technologies for other centers. Presenters will discuss new OWL technologies, definitions for changing technologies, and OWL pedagogy and praxis, as well as usability, development, and sharing/open-sourcing of online tutoring technologies. The issues raised in this panel are the result of an OWL Technology Summit held in 2007 where representatives from eleven institutions met to explore trends in online tutoring technology development. This panel brings forward key …

Modeling Of Subcontinuum Thermal Transport Across Semiconductor-Gas Interfaces, Dhruv Singh, Xiaohui Guo, Alina A. Alexeenko, Jayathi Y. Murthy, Timothy S. Fisher

School of Aeronautics and Astronautics Faculty Publications

A physically rigorous computational algorithm is developed and applied to calculate subcontinuum thermal transport in structures containing semiconductor-gas interfaces. The solution is based on a finite volume discretization of the Boltzmann equation for gas molecules (in the gas phase) and phonons (in the semiconductor). A partial equilibrium is assumed between gas molecules and phonons at the interface of the two media, and the degree of this equilibrium is determined by the accommodation coefficients of gas molecules and phonons on either side of the interface. Energy balance is imposed to obtain a value of the interface temperature. The classic problem of …

Announcements

The Writing Center Journal

No abstract provided.

The Effect Of Polydispersivity On The Thermal Conductivity Of Particulate Thermal Interface Materials, Sasanka Kanuparthi, Ganesh Subbarayan, Thomas Siegmund, Bahgat Sammakia

School of Mechanical Engineering Faculty Publications

A critical need in developing thermal interface materials (TIMs) is an understanding of the effect of particle/matrix conductivities, volume loading of the particles, the size distribution, and the random arrangement of the particles in the matrix on the homogenized thermal conductivity. Commonly, TIM systems contain random spatial distributions of particles of a polydisperse (usually bimodal) nature. A detailed analysis of the microstructural characteristics that influence the effective thermal conductivity of TIMs is the goal of this paper. Random microstructural arrangements consisting of lognormal size-distributions of alumina particles in silicone matrix were generated using a drop-fall-shake algorithm. The generated microstructures were …

A Homogeneous Architecture For Power Policy Integration In Operating Systems, Nathaniel Pettis, Yung-Hsiang Lu

Department of Electrical and Computer Engineering Faculty Publications

A significant volume of research has concentrated on operating system (OS)-directed power management. The primary focus of previous research has been the development of better policies. In this paper, we provide evidence that one policy may outperform another under different conditions. Hence, it is difficult, or even impossible, to design the "best" policy for all computers. We explain how to select the best policies at runtime without user or administrator intervention by using a software framework called the Homogeneous Architecture for Power Policy Integration (HAPPI). This architecture is portable across different platforms running Linux. HAPPI specifies common requirements for policies …

Analysis Of The Wicking And Thin-Film Evaporation Characteristics Of Microstructures, R. Ranjan, J. Y. Murthy, S V. Garimella

CTRC Research Publications

The topology and geometry of microstructures play a crucial role in determining their heat transfer performance in passive cooling devices such as heat pipes. It is therefore important to characterize microstructures based on their wicking performance, the thermal conduction resistance of the liquid filling the microstructure, and the thin-film characteristics of the liquid meniscus. In the present study, the free-surface shapes of the static liquid meniscus in common microstructures are modeled using SURFACE EVOLVER for zero Bond number. Four well-defined topologies, viz., surfaces with parallel rectangular ribs, horizontal parallel cylinders, vertically aligned cylinders, and spheres (the latter two in both …

Examining The Nature Of Technology Graduate Education, Nathan Hartman, Marvin Sarapin, Gary Bertoline, Susan Sarapin

Computer Graphics Technology Faculty Publications

According to the Association of Technology, Management, and Applied Engineering (ATMAE), graduate-level studies in technology are designed to prepare technologists to focus on the applied challenges of society, industry, and government through integration- and implementation- oriented activities (2009). Although the association’s affiliated institutions and membership have been interested in research and graduate education for many years, increased discussion is needed concerning both the goals and delivery of graduate programs leading to master’s and doctoral degrees related to the field for the 21st century. Many of the academic participants in this organization, as well as others, work at universities that include …

A Subject Librarian’S Guide To Collaborating On E-Science Projects, Jeremy R. Garritano, Jake R. Carlson

Libraries Research Publications

For liaison or subject librarians, entering into the emerging area of providing researchers with data services or partnering with them on cyberinfrastructure projects can be a daunting task. This article will provide some advice as to what to expect and how providing data services can be folded into other liaison duties. New skills for librarians and traditional skills that can be adapted to data curation work will also be discussed. A case study on the authors' experiences collaborating with two chemistry faculty on an e-science project serves as the framework for the majority of this article.

Developing Core Leadership Competencies For The Library Profession, Shorlette Ammons-Stephens, Holly J. Cole, Keisha Jenkins-Gibbs, Catherine Fraser Riehle, William H. Weare Jr.

Libraries Faculty and Staff Scholarship and Research

No abstract provided.

An Introduction To Archives For Librarians, Sammie L. Morris

Libraries Research Publications

This article offers an introduction to archives work for librarians. Included in the article are guidance on starting an archives, adhering to archival theory, processing archival collections, and receiving training in archives work.

Inflow Treatment For Small Scale Axial Fans Under Unfavorable Inflow Conditions, Yoon-Shik Shin, J Stuart Bolton, Luc Mongeau

Publications of the Ray W. Herrick Laboratories

No abstract provided.

From The Editors, Lauren Fitzgerald, Melissa Ianetta

The Writing Center Journal

No abstract provided.

From The Editors, Melissa Ianetta, Lauren Fitzgerald

The Writing Center Journal

No abstract provided.

Between Technological Endorsement And Resistance: The State Of Online Writing Centers, Stephen Neaderhiser, Joanna Wolfe

The Writing Center Journal

No abstract provided.

Front Matter

The Writing Center Journal

No abstract provided.

Information For Authors

The Writing Center Journal

No abstract provided.

International Writing Centers Association Information

The Writing Center Journal

No abstract provided.

A Continuum-Based Model For Analysis Of Laterally Loaded Piles In Layered Soils, D Basu, Rodrigo Salgado, Monica Prezzi

Lyles School of Civil Engineering Faculty Publications

An analysis is developed to calculate the response of laterally loaded piles in multilayered elastic media. The displacement fields in the analysis are taken to be the products of independent functions that vary in the vertical, radial and circumferential directions. The governing differential equations for the pile deflections in different soil layers are obtained using the principle of minimum potential energy. Solutions for pile deflection are obtained analytically, whereas those for soil displacements are obtained using the one-dimensional finite difference method. The input parameters needed for the analysis are the pile geometry, the soil profile, and the elastic constants of …