35,431 Works

Journal of Games, Self, & Society, Issue 1

Kelli Dunlop & Susan E. Rivers
A peer-reviewed journal created and edited by iThrive Games and published by ETC Press. JGSS encourages interdisciplinary research, conversation, and community around games-related scholarship. The journal highlights work focused on how games, game design, and gameplay contribute to a deeper understanding of learning, health, and humanity.
- American Abyss: Simulating a Modern American Civil War Edward Castronova, PhD
- When the Mind Moves Freely, the Body Follows: Exergame Design, Evaluation, and the Curious Case...

Journal of Games, Self, & Society, Issue 1

Kelli Dunlop & Susan E. Rivers
A peer-reviewed journal created and edited by iThrive Games and published by ETC Press. JGSS encourages interdisciplinary research, conversation, and community around games-related scholarship. The journal highlights work focused on how games, game design, and gameplay contribute to a deeper understanding of learning, health, and humanity.
- American Abyss: Simulating a Modern American Civil War Edward Castronova, PhD
- When the Mind Moves Freely, the Body Follows: Exergame Design, Evaluation, and the Curious Case...

Cumulative Impact and Equity Objectives in Energy Systems Modeling and Policy

Erin Mayfield
Energy system development is driven by the complexity inherent in physical systems and the influence of a myriad of diverse, interacting stakeholders with heterogeneous preferences. Transforming energy systems entails balancing multiple and often conflicting societal objectives. This thesis presents new modeling approaches for energy systems planning and policy evaluation, with an emphasis on cumulative impacts, equity, and system heterogeneity. The application domain of this thesis is the U.S. natural gas system, although the analytical approaches...

Cumulative Impact and Equity Objectives in Energy Systems Modeling and Policy

Erin Mayfield
Energy system development is driven by the complexity inherent in physical systems and the influence of a myriad of diverse, interacting stakeholders with heterogeneous preferences. Transforming energy systems entails balancing multiple and often conflicting societal objectives. This thesis presents new modeling approaches for energy systems planning and policy evaluation, with an emphasis on cumulative impacts, equity, and system heterogeneity. The application domain of this thesis is the U.S. natural gas system, although the analytical approaches...

A decision procedure for the subtype relation on intersection types with bounded variables

Benjamin C. Pierce
Abstract: "We introduce an extension of the intersection type discipline in which types may contain variables with upper and lower bounds, present an algorithm for deciding the subtype relation in the extended system, and prove that the algorithm is correct."

Monetarism Revisited

Allan Meltzer
Thomas Mayer and Patrick Minford's retrospective on monetarism offers a useful summary of some of the main issues in the 1960s and 1970s debate over monetary theory and policy. I agree with much, but not all, of what they say and especially with a main conclusion that they draw: currently most of the issues then in dispute are now regarded as settled. Much of monetarist analysis now forms a central part of what is (strangely)...

Phonon Scattering and Confinement in Crystalline Films

Kevin Dale Parrish
The operating temperature of energy conversion and electronic devices affects their efficiency and efficacy. In many devices, however, the reference values of the thermal properties of the materials used are no longer applicable due to processing techniques performed. This leads to challenges in thermal management and thermal engineering that demand accurate predictive tools and high fidelity measurements. The thermal conductivity of strained, nanostructured, and ultra-thin dielectrics are predicted computationally using solutions to the Boltzmann transport...

Using the Vickrey-Clarke-Groves Auction Mechanism for Enhanced Bandwidth Allocation in Tactical Data Networks

Mark H. Klein, Daniel Plakosh & Kurt C. Wallnau
A mechanism is an institution such as an auction, voting protocol, or a market that defines the rules for how humans are allowed to interact, and governs the procedure for how collective decisions are made. Computational mechanisms arise where computational agents work on behalf of humans. This report describes an investigation of the potential for using computational mechanisms to improve the quality of a combat group's common operating picture, in a setting where network bandwidth...

Algorithms for maximum-likelihood logistic regression

Thomas P. Minka
Logistic regression is a workhorse of statistics and is closely related to methods used in Machine Learning, including the Perceptron and the Support Vector Machine. This note reviews seven different algorithms for finding the maximum-likelihood estimate. Iterative Scaling is shown to apply under weaker conditions than usually assumed. A modified iterative scaling algorithm is also derived, which is equivalent to the algorithm of Collins et al (2000). The best performers in terms of running time...

A keyword search system using open source software

Jan Trmal, Guoguo Chen, Dan Povey, Sanjeev Khudanpur, Pegah Ghahremani, Xiaohui Zhang, Vimal Manohar, Chunxi Liu, Aren Jansen, Dietrich Klakow, David Yarowsky & Florian Metze
Provides an overview of a speech-to-text (STT) and keyword search (KWS) system architecture build primarily on the top of the Kaldi toolkit and expands on a few highlights. The system was developed as a part of the research efforts of the Radical team while participating in the IARPA Babel program. Our aim was to develop a general system pipeline which could be easily and rapidly deployed in any language, independently on the language script and...

Regularity and convergence of crystalline motion

Katsuyuki Ishii & H. Mete. Soner
Mathematics Technical Report

SVR: Practical Engineering of a Fast 3D Meshing Algorithm

Umut A. Acar, Benoit Hudson, Gary L. Miller & Todd Phillips
The recent Sparse Voronoi Refinement (SVR) Algorithm for mesh generation has the fastest theoretical bounds for runtime and memory usage. We present a robust practical software implementation of the SVR for meshing a piecewise linear complex in 3 dimensions. Our software is competitive in runtime with state of the art freely available packages on generic inputs, and on pathological worse cases inputs, we show SVR indeed leverages its theoretical guarantees to produce vastly superior runtime...

Function and form relationships : a basis for preliminary design

J Rinderle & Carnegie Mellon University.Engineering Design Research Center.
Abstract: "During preliminary design, designers must evaluate the relative merits of many alternative concepts. Experienced designers are able to reason about basic relationships between the physical structure of alternatives and performance of a device and can therefore eliminate many alternatives without the need for design detailing. Such form-function relations exist for individual components and devices due to basic engineering principles. They can be codified and used as a basis for a structured system able to...

Contextual Classification with Functional Max-Margin Markov Networks

Daniel Munoz, J. Andrew Bagnell, Nicolas Vandapel & Martial Hebert
We address the problem of label assignment in computer vision: given a novel 3-D or 2-D scene, we wish to assign a unique label to every site (voxel, pixel, superpixel, etc.). To this end, the Markov Random Field framework has proven to be a model of choice as it uses contextual information to yield improved classification results over locally indepen- dent classifiers. In this work we adapt a functional gradi- ent approach for learning high-dimensional...

Application of Forward Modeling to Materials Characterization

Saransh Singh
The four pillars of material science and engineering namely structure, processing, properties and performance form the so-called material paradigm. At the heart of the material paradigm is materials characterization, which is used to measure and identify the relationships. Materials Characterization typically reconstructing the conditions giving rise to a measurement, a classic inverse problem. The solutions of these inverse problems are under or over determined and not unique. The solutions of these inverse problems can be...

An Empirical Approach to the Prisoners' Dilemma Game

Lester B. Lave
Adam Smith's invisible hand had the important property that, if each individual pursued his profit in optimal fashion, the total profit of the community would be maximized. Game theory has proposed a simple situation reversing this conclusion: two prisoners, arrested for a crime, are questioned separately. Each is informed it cannot be proved they committed the crime but that if (1) A does not confess to the crime and (1') B does not confess, both...

Bibliographic Visualizations of Early Work in Neutron Diffraction

Matthew Marsteller
The literature of neutron diffraction was explored using Web of Science data and VOSviewer for data visualization. The timespan covered was from the advent of the topic through 1955 when Clifford Shull left Oak Ridge. The search query in Web of Science allowed for either "neutron diffraction" or "neutron scattering" to appear in the resulting records. Visualizations will include networks of co-authors with numbers of documents produced. Co-author groups readily appear in the visualization and...

Bibliographic Visualizations of Early Work in Neutron Diffraction

Matthew Marsteller
The literature of neutron diffraction was explored using Web of Science data and VOSviewer for data visualization. The timespan covered was from the advent of the topic through 1955 when Clifford Shull left Oak Ridge. The search query in Web of Science allowed for either "neutron diffraction" or "neutron scattering" to appear in the resulting records. Visualizations will include networks of co-authors with numbers of documents produced. Co-author groups readily appear in the visualization and...

The 2010 CMU GALE Speech-to-Text System

Florian Metze, Roger Hsiao, Qin Jin, Udhyakumar Nallasamy & Tanja Schultz
This paper describes the latest Speech-to-Text system developed for the Global Autonomous Language Exploitation ("GALE") domain by Carnegie Mellon University (CMU). This systems uses discriminative training, bottle-neck features and other techniques that were not used in previous versions of our system, and is trained on 1150 hours of data from a variety of Arabic speech sources. In this paper, we show how different lexica, pre-processing, and system combination techniques can be used to improve the...

Basic treatment of QCD phase transition bubble nucleation

Leonard Kisslinger, Sameer Walawalkar & Mikkel B. Johnson
Starting from the QCD Lagrangian and the surface tension of QCD bubbles we derive the critical size of bubbles, the nucleation probability and the nucleation site separation distance.

Geometric Modeling and Shape Analysis for Biomolecular Complexes Based on Eigenfunctions

Tao Liao
Geometric modeling of biomolecules plays an important role in the study of biochemical processes. Many simulation methods depend heavily on the geometric models of biomolecules. Among various studies, shape analysis is one of the most important topics, which reveals the functionalities of biomolecules.

Relating Tolerances with Kinematic Behavior

David Alan Bourne, D. Navinchandra & R. Ramaswamy
Designers usually complete the design with nominal dimensions and allocate tolerances only at the drawing stage. This practice can cause the following problems: (1) unnecessarily tight tolerances that require expensive manufacturing processes, (2) parts whose proper functioning is contingent on excessively tight tolerances, and (3) situations whcre slight wear on a part can seriously modify the bchavior of the device. There is a need for computer-bascd techniques which will allow designers to invcstigate Lhe erfect...

Comments on "The Effects of Social Task and Situational Factors on Motivation, Performance and Appraisal"

Paul S. Goodman & Mark Fichman
Our review of Mitchell's paper "The Effects of Social, Task, and Situational Factors on Motivation, Performance, and Appraisal" is divided into three sections. First, we give a brief representation of the concepts and theory in order to facilitate our analysis of Mitchell's work. Second we identify and discuss the critical issues in the Mitchell paper. Last, we delineate our position concerning some of the major research issues on the relationship of social, task, and situational...

Data Sets and Analysis Results Accompanying a Dictionary Indexing Tutorial Paper

Marc Degraef, Elena Pascal & Mike Jackson
These file sets accompany a tutorial paper that has been submitted to the journal "Integrating Materials and Manufacturing Innovation". There are three main files (tar.gz) that each contain many files, including experimental data sets, input files for analysis programs, and results files produced by the EMsoft open source package for electron microscopy simulations. In addition, there is a small file that contains input crystal structure data, as well as a Supplementary Materials PDF file that...

Data Sets and Analysis Results Accompanying a Dictionary Indexing Tutorial Paper

Marc Degraef, Elena Pascal & Mike Jackson
These file sets accompany a tutorial paper that has been submitted to the journal "Integrating Materials and Manufacturing Innovation". There are three main files (tar.gz) that each contain many files, including experimental data sets, input files for analysis programs, and results files produced by the EMsoft open source package for electron microscopy simulations. In addition, there is a small file that contains input crystal structure data, as well as a Supplementary Materials PDF file that...

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