35,511 Works

Dialogue Patterns of an Arabic Robot Receptionist

Maxim Makatchev, Imran Fanaswala, Ameer Abdulsalam, Brett Browning, Wael Ghazzawi, Majd Sakr & Reid Simmons
Hala is a bilingual (Arabic and English) culturally-sensitive robot receptionist located at Carnegie Mellon University in Qatar. We report results from Hala's deployment by comparing her English dialogue corpus to that of a similar monolingual robot (named "Tank") located at CMU's Pittsburgh campus. Specifically, we compare the average number of turns per interaction, duration of interactions, frequency of interactions with personal questions, rate of non-understandings, and rate of thanks after the robot's answer. We provide...

Ways of improving the management of environmental risks

Lester B Lave
From the public's discovery of environmental quality in the late 1960s to the present, there has been increasing recognition that a more systematic approach is required to manage risks and to achieve the gains at low cost. Such a systematic approach must begin with risk identification, then go on to risk assessment, consideration of management options, a decision analysis of the options, and an examination of strategies for reducing loss. One of the most difficult...

Component structure of the vacant set induced by a random walk on a random graph

Colin Cooper & Alan Frieze
We consider random walks on several classes of graphs and explore the likely structure of the vacant set, i.e. the set of unvisited vertices. Let Γ(t) be the subgraph induced by the vacant set of the walk at step t. We show that for random graphs Gn,p (above the connectivity threshold) and for random regular graphs Gr,r ≥ 3, the graph Γ(t) undergoes a phase transition in the sense of the well-known ErdJW-RSAT1100590x.png -Renyi phase...

TSP Symposium 2013 Proceedings

Sergio Cardona, João Pascoal Faria, Fernanda Grazioli, Pedro Henriques, James McHale, Silvana Moreno, William R. Nichols, Leticia Pérez, Mushtaq Raza, Rafael Rincón & Diego Vallespir
The 2013 TSP Symposium was organized by the Software Engineering Institute and took place September 16–19 in Dallas, Texas. The goal of the TSP Symposium is to bring together practitioners and academics who share a common passion to change the world of software engineering for the better through disciplined practice. The conference theme was “When Software Really Matters,” which explored the idea that when product quality is critical, high-quality practices are the best way to...

Structure Function Sum rules for Systems with Large Scattering Lengths

Walter D. Goldberger & Ira Rothstein
We use a dispersion relation in conjunction with the operator product expansion (OPE) to derive model independent sum rules for the dynamic structure functions of systems with large scattering lengths. We present an explicit sum rule for the structure functions that control the density and spin response of the many-body ground state. Our methods are general and apply to either fermions or bosons which interact through two-body contact interactions with large scattering lengths. By employing...

Testing for the Role of Prejudice in Emergency Departments Using Bounceback Rates

Shamena Anwar & Hanming Fang
We propose and empirically implement a test for the presence of racial prejudice among emergency department (ED) physicians based on the bounceback rates of patients discharged after receiving diagnostic tests during their initial ED visit. A bounceback is defined as a return to the ED within 72 hours of being initially discharged. Applying the test to administrative data of ED visits from California and New Jersey, we do not find evidence of prejudice against black...

Real-time detection of protein trafficking with high-throughput flow cytometry (HTFC) and fluorogen-activating protein (FAP) base biosensor.

Yang Wu, Phillip H. Tapia, Jonathan Jarvik, Alan Waggoner & Larry A. Sklar
We combined fluorogen-activating protein (FAP) technology with high-throughput flow cytometry to detect real-time protein trafficking to and from the plasma membrane in living cells. The hybrid platform allows drug discovery for trafficking receptors, such as G protein-coupled receptors, receptor tyrosine kinases, and ion channels, which were previously not suitable for high-throughput screening by flow cytometry. The system has been validated using the β2-adrenergic receptor (β2AR) system and extended to other GPCRs. When a chemical library...

An Architecture for Internet Data Transfer

Niraj Tolia, Michael Kaminsky, David G. Andersen & Swapnil Patil
This paper presents the design and implementation of DOT, a flexible architecture for data transfer. This architecture separates content negotiation from the data transfer itself. Applications determine what data they need to send and then use a new transfer service to send it. This transfer service acts as a common interface between applications and the lower-level network layers, facilitating innovation both above and below. The transfer service frees developers from re-inventing transfer mechanisms in each...

A Free Market Architecture for Distributed Control of a Multirobot System

M. Bernardine Dias & Anthony Stentz
The coordination of a large group of robots to solve a specified task is a difficult problem. Centralized approaches can be computationally intractable, brittle, and unresponsive to change. Distributed approaches are not as prone to these problems, but they can be highly sub-optimal. This work introduces a novel economic approach for coordinating robots based on the free market system. The free market approach defines revenue and cost functions across the possible plans for executing a...

Optimization model for long range planning in the chemical industry

Ignacio E. Grossmann & Carnegie Mellon University.Engineering Design Research Center.
Technical Report

The Economy at Mid-Winter 1972

Allan Meltzer
Last November, I expressed concern about four major uncertainties overhanging the economy and the stock market. Most of them are still with us, at least in part.

Learning from La Vara: Shaping Sephardic Identity in New York City after the Second Diaspora

Kristen M. Minno
In New York City, the Sephardic immigrant community had established a strong foothold by the 1930s. However, the children of these immigrants were not learning traditions of their old homelands, or of centuries-old aspects of Sephardic culture. In response to this situation, Albert Levy, editor of the Sephardic newspaper La Vara, recognized that he and his paper could help to build bridges between the first generation immigrants from the Second Diaspora and their American children....

Omnidirectional Video Capturing, Multiple People Tracking and Identification for Meeting Monitoring

Fernando De La Torre, Carlos Vallespi, Paul E. Rybski, Manuela Veloso & Takeo Kanade
Meetings are a very important part of every days life for professionals working in universities, companies or governmental institutions. In fact, it is estimated that a midlevel manager or professional spends around 35% of his/her time in meetings. We have designed a physical awareness system called CAMEO (Camera Assisted Meeting Event Observer), a hardware/software component to record and monitor people’s activities in meetings. CAMEO captures the audio and a high resolution omnidirectional view of the...

Site mutations disrupt inter-helical H-bonds (alpha14W-alpha67T and beta15W-beta72S) involved in kinetic steps in the hemoglobin R-->T transition without altering the free energies of oxygenation.

Ching-Hsuan Tsai, Virgil Simplaceanu, Nancy T. Ho, Tong-Jian Shen, Daojing Wang, Thomas G. Spiro & Chien Ho
Three recombinant mutant hemoglobins (rHbs) of human normal adult hemoglobin (Hb A), rHb (alphaT67V), rHb (betaS72A), and rHb (alphaT67V, betaS72A), have been constructed to test the role of the tertiary intra-subunit H-bonds between alpha67T and alpha14W and between beta72S and beta15W in the cooperative oxygenation of Hb A. Oxygen-binding studies in 0.1 M sodium phosphate buffer at 29 degrees C show that rHb (alphaT67V), rHb (betaS72A), and rHb (alphaT67V, betaS72A) exhibit oxygen-binding properties similar to...

Convergence to the truth and nothing but the truth

Kevin T. Kelly & Clark N. Glymour
Department of Philosophy technical report

Spectral Approaches to Learning Predictive Representations

Byron Boots
A central problem in artificial intelligence is to choose actions to maximize reward in a partially observable, uncertain environment. To do so, we must obtain an accurate environment model, and then plan to maximize reward. However, for complex domains, specifying a model by hand can be a time consuming process. This motivates an alternative approach: learning a model directly from observations. Unfortunately, learning algorithms often recover a model that is too inaccurate to support planning...

Improving User Performance on Boolean Queries

John Pane & Brad Myers
The accurate formulation of boolean expressions is a notorious problem in programming languages as well as database and web query tools. Users have demonstrated great difficulty with the common textual method for specifying these queries, which uses the boolean operators AND, OR, and NOT, partly because these words are used inconsistently in natural languages. This paper proposes a tabular boolean query language that avoids the need to use named operators, provides a concrete distinction between...

Information Relevance for Informed Consent to Clinical Trials: Patients, Advisors, and Clinicians

Kelly Matula
This dissertation investigates patient and advisor information preferences regarding informed consent for clinical trials, and provider understanding of those preferences. The revised Common Rule requirements and their focus on identifying key information in consent make such investigation especially timely. This dissertation extends the literature on these topics by including, along with legal surrogates, advisors who lack legal decision making authority (“pure advisors”). Study 1 replicates and extends previous work by using patients’ and advisors’ choices...

Information Relevance for Informed Consent to Clinical Trials: Patients, Advisors, and Clinicians

Kelly Matula
This dissertation investigates patient and advisor information preferences regarding informed consent for clinical trials, and provider understanding of those preferences. The revised Common Rule requirements and their focus on identifying key information in consent make such investigation especially timely. This dissertation extends the literature on these topics by including, along with legal surrogates, advisors who lack legal decision making authority (“pure advisors”). Study 1 replicates and extends previous work by using patients’ and advisors’ choices...

The Policy Consequences of Information: Three Essays on Being (Un)Informed

David Hagmann
Information in economics is viewed as desirable to the extent that it leads to better decisions. Growing evidence,however,finds that people are often motivated to avoid instrumentally useful information–and sometimes are better off for doing so. I develop and validate a scale and show that the desire to obtain and avoid information is domain-specific, stable over time, and predicts consequential behavior. One consequence of such a desire to avoid information is that some behavioral interventions, e.g....

The Policy Consequences of Information: Three Essays on Being (Un)Informed

David Hagmann
Information in economics is viewed as desirable to the extent that it leads to better decisions. Growing evidence,however,finds that people are often motivated to avoid instrumentally useful information–and sometimes are better off for doing so. I develop and validate a scale and show that the desire to obtain and avoid information is domain-specific, stable over time, and predicts consequential behavior. One consequence of such a desire to avoid information is that some behavioral interventions, e.g....

Abstraction and Intermediation: The Implications of Behavioral Decision Making for Three Applications in Finance

David Rode
Modern financial theory and practice make extensive use of the concepts of abstraction and intermediation. Securities are designed, valued, and allocated within portfolios based on characteristics that contain little of the richness of the actual assets underlying their claims. Corporate financial decisions and policy analyses evaluate choices based on comparing abstract metrics that ignore or minimize the myriad attributes belonging to such choices. In many cases, these evaluations and choices are made by intermediaries (whether...

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