Digital Commons Network^™

Information Outputs And International Trade: Evidence From U.S. State Level Data On Business Air Travel, Anca D. Cristea

Purdue CIBER Working Papers

This paper provides theory and evidence examining the importance of information transfers in international trade. Information is modeled as an endogenous fixed cost of trade that enters as input into market-specific product appeal. Differences in bilateral communication costs, information intensities across traded goods and market potentials across foreign countries determine the optimal level of information transmitted within a trade relationship. Using rich U.S. state-level data on international business class air travel, matched with bilateral data on manufacturing exports, I confirm the model’s predictions that the demand for information transferred via business class travel is directly related to export volumes and …

An Integrated Simulation Environment Combining Process-Driven And Event-Driven Models, Vishnu Sharma Kesaraju

Browse all Theses and Dissertations

A simulation framework that integrates process-driven and event-driven approaches offers a powerful combination of tools to the modeler. In process-driven simulation models, the system can be represented by block diagrams or system networks through which entities flow to mimic real life system objects. In event-driven models, the system can be represented by event graphs, which focus on the abstraction of the event rather than on observable physical entities. In this research, a simulation environment is proposed that integrates both the approaches, i.e. process and event. One of the main outcomes of working in such an environment is that modelers can …

The Development Of Preservice Elementary Teachers' Pedagogical Content Knowledge For Scientific Modeling, Michelle Elizabeth Cotterman

Browse all Theses and Dissertations

For teachers to effectively engage students in scientific modeling, they require pedagogical content knowledge (PCK) for this practice. This study examines how preservice elementary teachers develop PCK for scientific modeling when given modeling centered instruction in a science methods course. Our findings indicate preservice teachers made significant pedagogical gains in this practice, shifting from using models as static products to using them as thinking tools for students to develop science content knowledge. However, few viewed learning the practice of scientific modeling as an important learning goal. Preservice teachers also had difficulty translating the depth of their understandings into lesson designs, …

Paths To Quality: A Child Care Quality Rating & Improvement System For Indiana. Evaluation Methods And Measures, Carolyn Langill, James Elicker, Karen Ruprecht, Kyong-Ah Kwon, Joellen Guenin

Center for Families Publications

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 …

Simulations And Measurements Of Gas-Droplet Flows In Supersonic Jets Expanding Into Vacuum, A Venkattraman, Alina A. Alexeenko

School of Aeronautics and Astronautics Faculty Publications

Simulations and measurements of gas-droplet multiphase flows in application to supersonic expansions into vacuum have been considered and compared with each other. The experiments involved exposing a control surface to a supersonic plume from two different nozzles and measuring the size distribution of droplets at various locations. The simulations are based on the direct simulation Monte Carlo modeling of vapor-phase flow with a one-way coupling of droplet momentum and energy. The droplet trajectories are computed for the experimental conditions for droplets originating at the throat and lip of two different nozzles. The maximum droplet radius reaching the control surface and …

Global Methane Emissions From Wetlands, Rice Paddies, And Lakes, Q.. Zhuang, J. M. Melack, S. Zimov, K. M. Walter, C. L. Butenhoff, M. A.K. Khalil

Department of Earth, Atmospheric, and Planetary Sciences Faculty Publications

No abstract provided.

Turn-Coats And Double-Agents In Restoration & Revolution England: The Case Of Robert Ferguson, The Plotter, Melinda S. Zook

Department of History Faculty Publications

The propagandist and conspirator, Robert Ferguson, so-called, The Plotter, has always been something of a puzzle to historians; his conversion from Whig to Jacobite following the Glorious Revolution has always been particularly troubling. This essay argues that Ferguson's winding career was far from unusual in the late Stuart era. Many politicians, prelates, playwrights and publicists altered their principles or even their religion within the fast changing political environment of Restoration and Revolution England. Secondly, this essay takes Ferguson seriously as a sophisticated political theorist, arguing that his political principles, from Whig to Jacobite, remained fairly consistent and revolve around his …

A Case Study Of System Power Efficiency Loss Mechanisms In A Multijunction, Spectral Splitting, Concentrator Solar Cell System, J. R. Wilcox, A. W. Haas, J. L. Gray, R. J. Schwartz

Department of Electrical and Computer Engineering Faculty Publications

In multijunction solar cell concentrator systems, it is important for system and cell designers to understand the relative magnitude of each loss mechanism. This investigation of potential system power efficiency improvements for a high-efficiency concentrator system focuses on quantifying the effects that various known loss mechanisms have on the overall system performance. Each of the loss mechanisms that were investigated play a part in the degradation of the device's performance and each of these losses can be reduced by appropriate engineering. This paper will address the extensive optimization of the system power efficiency of a multijunction concentrator solar cell system …

A Comparative Assessment Of One's Own Age From Facial Images Of Others: Two Case Studies For The Americans And The Japanese, Yasuhiro Azuma, Mayuka Nishimoto, Naoyuki Miyamoto, Takashi X. Fujisawa, Noriko Nagata, Akio Kosaka

Department of Electrical and Computer Engineering Faculty Publications

We have proposed a method for estimating the subjective age of a person; that is, a method that yields a person's age on the basis of estimations made by that person about the age of other people by observing their facial images. Thus far, experiments have shown that Japanese people tend to underestimate their subjective age. In this study, we focus on the socio-psychological effects that may influence the underestimation of subjective age. We conducted an international comparative study. In this study, experiments were performed in which American and Japanese participants viewed American facial images; in addition, the American participants …

A 32 Kb 10t Sub-Threshold Sram Array With Bit-Interleaving And Differential Read Scheme In 90 Nm Cmos, Ik Joon Chang, Jae-Joon Kim, Sang Phill Park, Kaushik Roy

Department of Electrical and Computer Engineering Faculty Publications

Ultra-low voltage operation of memory cells has become a topic of much interest due to its applications in very low energy computing and communications. However, due to parameter variations in scaled technologies, stable operation of SRAMs is critical for the success of low-voltage SRAMs. It has been shown that conventional 6T SRAMs fail to achieve reliable subthreshold operation. Hence, researchers have considered different configuration SRAMs for subthreshold operations having single-ended 8T or 10T bit-cells for improved stability. While these bit-cells improve SRAM stability in subthreshold region significantly, the single-ended sensing methods suffer from reduced bit-line swing due to bit-line leakage …

A 6-Gb/S Wireless Inter-Chip Data Link Using 43-Ghz Transceivers And Bond-Wire Antennas, Chen Wu-Hsin, Joo Sanghoon, S. Sayilir, R. Willmot, Choi Tae-Young, Kim Dowon, J. Lu, D. Peroulis, Jung Byunghoo

Department of Electrical and Computer Engineering Faculty Publications

A 43-GHz wireless inter-chip data link including antennas, transmitters, and receivers is presented. The industry standard bonding wires are exploited to provide high efficiency and low-cost antennas. This type of antennas can provide an efficient horizontal communication which is hard to achieve using conventional on-chip antennas. The system uses binary amplitude shift keying (ASK) modulation to keep the design compact and power efficient. The transmitter includes a differential to single-ended modulator and a two-stage power amplifier (PA). The receiver includes a low-noise amplifier (LNA), pre-amplifiers, envelope detectors (ED), a variable gain amplifier (VGA), and a comparator. The chip is fabricated …

A Dual-Mode Programmable Distributed Amplifier/Mixer, Laleh Rabieirad, Saeed Mohammadi

Department of Electrical and Computer Engineering Faculty Publications

A dual-mode field programmable RF amplifier / mixer is presented. Transistor switches, low loss CPW lines and RF transistors are combined in a 3-stage distributed topology which can operate as either a distributed amplifier or a distributed mixer. Functional reconfigurability is achieved using one bit programming without changing the signal path. The programmable module in its distributed amplifier mode provides a gain of 8dB in a 3-8 GHz bandwidth. When switched to the distributed mixer mode, it shows a measured average conversion gain of 4dB in a 1-16GHz bandwidth. This circuit is fabricated in a standard 130nm CMOS technology and …

A Linear Programming Approach To Shipboard Electrical System Modeling, Ricky R. Chan, Scott D. Sudhoff, Yonggon Lee, Edwin L. Zivi

Department of Electrical and Computer Engineering Faculty Publications

Operability and dependability metrics can be a valuable tool in early ship design by providing a quantitative analysis of the robustness of the ship's integrated engineering plant (IEP). However, the use of these metrics involves large numbers of time domain simulations of the IEP. The simulation of such a complex system, which includes electrical and thermal subsystems, can be problematic in terms of computational efficiency. In this paper, a simplified modeling approach based on the fundamental power limitations is set forth. The power flow problem is posed as a linear programming problem which is solved using a simplex method.

A Mimo-Ofdm Channel Estimation Scheme Utilizing Complementary Sequences, T. R. Qureshi, M. D. Zoltowski, R. Calderbank

Department of Electrical and Computer Engineering Faculty Publications

We present a pilot-assisted method for estimating the frequency selective channel in a MIMO-OFDM system. The pilot sequence is designed using the DFT of the Golay complementary sequences. Novel exploitation of the perfect autocorrelation property of Golay complementary sequences, in conjunction with OSTBC based pilot waveform scheduling across multiple OFDM frames, facilitates simple separation of the channel mixtures at the receive antennas. The DFT length used to transform the complementary sequence into the frequency domain is shown to be a key critical parameter for correctly estimating the channel. This channel estimation scheme is then extended to antenna arrays of arbitrary …

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.

Institutional Repositories And Research Data Curation In A Distributed Environment, Michael Witt

Libraries Research Publications

Broadly speaking, the lack of a framework for organizing, preserving, and making research data available for the long-term has resulted in valuable datasets becoming lost or discarded. The approach of the Distributed Data Curation Center of the Purdue University Libraries has been to integrate librarians and the principles of library and archival sciences with domain sciences, computer and information sciences, and information technology to address the challenges of managing collections of research data and to learn how to better support interdisciplinary research through data curation. One piece of infrastructure that supports these activities is a “distributed institutional repository” that includes …

Campus Career Collaboration: "Do The Research. Land The Job.", Mary M. Dugan, George Bergstrom, Tomalee Doan

Libraries Research Publications

Purdue University’s Management and Economics Library (MEL) recognized a unique opportunity to build a strong collaboration among campus units in the career development area, enhancing students’ interviewing abilities and employment opportunities. The products and services presented in this article focus on MEL’s unique campuswide collaboration with twelve campus libraries and thus far eight career units in the creation and implementation of a Career Wiki. The Career Wiki, both a library product and service, offers electronic access to career resources, and it effectively increases use of all library collections and information resources, thereby adding to the services each career unit offers.

Invisible Hands: Recognizing Archivists’ Work To Make Records Accessible, Sammie L. Morris, Shirley K. Rose

Libraries Research Publications

Two faculty members, one an archivist and the other a rhetoric and composition scholar/professor collaborated in processing the papers of a rhetoric and composition scholar. This project allowed the archivist to gain a better understanding of archival researchers' needs, while allowing the researcher to better understand the thought process and activities inherent in archival processing-- the activities of organizing, describing, and preserving primary source materials in the archives. Through this article the authors seek to demystify and increase transparency of archival processing, while enhancing researchers' abilities to interpret the archival collections with which they work.

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.

Positioning Libraries To Support The Goals Of Higher Education Institutions: The Peabody Academic Library Leadership Institute, Sharon A. Weiner, Patricia Senn Breivik, Timothy Caboni, Dennis Clark

Libraries Faculty and Staff Scholarship and Research

This article describes the genesis of Vanderbilt University's Peabody Academic Library Leadership Institute as an outcome of a particular philosophy. That philosophy is based on the concept that to fulfill their potential contributions, academic libraries need to direct their planning, resources, and services to support the priorities of their parent institutions. This article addresses the need for campus-focused leadership training; higher education leadership training for academic librarians; and the higher education context for libraries. It describes why Vanderbilt's Peabody College of Education and Human Development initiated a professional development institute for librarians. It describes the institute's history, curriculum, and assessment …

Cues To Contrastive Focus In Romanian, Alis Manolescu, Daniel J. Olson, Marta Ortega-Llebaria

School of Languages and Cultures Faculty Publications

In this study we measured patterns of pitch alignment, pitch range and duration in relation to broad and contrastive focus in Romanian. In declarative sentences with broad focus, speakers place a pitch accent on each lexically stressed syllable with peaks that become progressively lower towards the end of the sentence. In prenuclear accents peaks align with the post-tonic syllable. In declarative sentences with contrastive focus, speakers use strategies based on pitch and duration in order to build a maximum contrast between the word under focus and those in pre- and post-focal contexts: an expanded pitch range under focus and a …

Extensive Training Is Insufficient To Produce The Work-Ethic Effect In Pigeons, Marco Vasconcelos, Peter J. Urcuioli

Department of Psychological Sciences Faculty Publications

Zentall and Singer (2007a) hypothesized that our failure to replicate the work-ethic effect in pigeons (Vasconcelos, Urcuioli, & Lionello-DeNolf, 2007) was due to insufficient overtraining following acquisition of the high- and low-effort discriminations. We tested this hypothesis using the original work-ethic procedure (Experiment 1) and one similar to that used with starlings (Experiment 2) by providing at least 60 overtraining sessions. Despite this extensive overtraining, neither experiment revealed a significant preference for stimuli obtained after high effort. Together with other findings, these data support our contention that pigeons do not reliably show a work-ethic effect.

Building The Latin America We Want: Supplementing Representative Democracies With Consensus-Building, Mariana Hernández Crespo

Cardozo Journal of Conflict Resolution

This article is about using consensus-building to create channels for meaningful participation in public decision-making, in order to supplement representative democracies in Latin America. I argue that the addition of a consensus-building mechanism into the legislative process will create the necessary forum for stakeholders to contribute to the framing and resolution of issues of public concern. Furthermore, as Susskind has argued, allowing citizens to participate at the beginning of decision-making processes will make legislative outcomes more legitimate and decrease the level of political dissatisfaction.

State Regulation Of Arbitration Proceedings: Judicial Review Of Arbitration Awards By State Courts, Stephen K. Huber

Cardozo Journal of Conflict Resolution

The thesis of this Article can be stated simply and concisely: States possess the power to adopt standards for the conduct of arbitration proceedings and review of arbitration awards that are significantly different from federal law standards. The major objective of this Article is to explore the most important possibilities for reform of arbitration law and practice at the state level. State law standards will be of increasing importance in the reformation of arbitration practice. This Article focuses on the standards of review of arbitration awards employed by state courts, because the power to vacate an arbitration award is the …

Yada, Yada, Yada: Seinfeld, The Law And Mediation, Paul Devendorf

Cardozo Journal of Conflict Resolution

This Note will first explore the popularity of Seinfeld and discuss the influence of Seinfeld on legal culture. Part III details cultivation theory and explores the possible influences Seinfeld may have in shaping its viewers' impressions of formal law. Specific instances in-which Seinfeld has ridiculed formal legal practices and offered social criticisms of the legal profession are analyzed in Part IV. Part V describes a specific episode of Seinfeld and illustrates the consequences of parties' refusal to reach mutually satisfactory resolutions, the need for mediation to resolve highly contentious disputes, and the inadequacy of the legal system to provide an …

Judges Gone Wild: Why Breaking The Mediation Confidentiality Privilege For Acting In "Bad Faith" Should Be Reevaluated In Court-Ordered Mandatory Mediation, Samara Zimmerman

Cardozo Journal of Conflict Resolution

This Note focuses on the reasons why a good faith requirement or a bad faith exception for breaking mediation confidentiality is objectionable and offers an alternative for the Florida court system that, if implemented, could mitigate such disadvantages. I will discuss "the intersection between [a] court-ordered mediation, the confidentiality of which is mandated by law ... and the power of a court to control proceedings," and persons who appear before it by sanctioning conduct that taking place in mediation. Part II of this Note will begin by providing a background to the Doe v. Francis civil case. It will highlight …

Application Of Cascade Theory To Online Systems: A Study Of Email And Google Cascades, April Mara Barton

Minnesota Journal of Law, Science & Technology

No abstract provided.

From The Editors, Lauren Fitzgerald, Melissa Ianetta

The Writing Center Journal

No abstract provided.