36,564 Works

Pittsburgh Cold Study 2 Data Set

Aggregated Cold Study Data Set - Studies 1 through 5

Scalable Manufacturing of Soft and Stretchable Liquid-Metal-Based Circuits with Integrated Packaged Microelectronics

Kadri Bugra Ozutemiz
Soft and stretchable electronics (SSEs) have recently drawn considerable attention as an alternative for conventional rigid electronic devices when physical interaction with biological tissue and delicate objects is needed, such as for wearable computing, implantable electronics, and soft robotics. Unlike their rigid counterparts, SSEs can allow large amounts of bending, stretching, and other modes of deformation (e.g., 40% or more strains) without losing functionality. Furthermore, SSEs could be designed to have a similar elasticity as...

Three-dimensional Image-based Modeling of Microscale Phenomena in Polymer Electrolyte Fuel Cells

Shohei Ogawa
The main scope of this thesis is to analyze the electrochemical processes in polymer electrolyte fuel cells (PEFC), focusing on the 3D geometry of electrode materials for performance and durability improvement. Specifically, the thesis includes new electrochemical modeling methods on real material-based structures and idealized representative geometry. To obtain the 3D structures of platinum group metal-free (PGM-free) cathode materials, the nano-scale X-ray computed tomography (nano-CT) technology is applied, and the 3D structures from the imaging...

The Party and the Filmmakers: DEFA-­‐SED Interactions 1945 to 1971

Jonathan Stepp
This dissertation covers the interrelationship between the ruling Socialist Unity Party of Germany (SED) and the filmmakers of the feature film studio at the German Film Corporation (DEFA) in the German Democratic Republic(GDR). The interactions between the two from 1945 to 1971reveal a great deal about the overarching cultural-­‐ ideological framework of the SED, and the ideologicaldevelopment of the GDR. As the sole ruling party of the GDR, the SED maintained a strong hold over...

On the Mechanism and Quantitative Toxicity Evolution of Catalytic TAML and NewTAML Hydrogen Peroxide Oxidative Destruction of Micropollutants in River Water and Municipal Wastewater

Yogesh Somasundar
Anthropogenic activities over the centuries have led to depletion of Earth’s natural resources and damage to ecology at alarming magnitudes and accelerating rates. Contamination of freshwater is a major component of the ecological injuries which is the most economically accessible point for transformative cleanup to support the survival of mankind and other species. In addition to preventive efforts to conserve water bodies, the world is turning towards replenishing and reusing water through wastewater treatment. Unfortunately,...

Combining Multiple Heuristics: Studies on Neighborhood-base Heuristics and Sampling-based Heuristics

This thesis centers on the topic of how to automatically combine multiple heuristics. For most computationally challenging problems, there exist multiple heuristics, and it is generally the case that any such heuristic exploits only alimited number of aspects among all the possible problem characteristics that we can think of, and by definition, is not infallible. Thus, if the situation encountered does not align well with the nature of the employed heuristic, thealgorithm can progress very...

Social Media Analytics for Stance Mining A Multi-Modal Approach with Weak Supervision

People express their opinions on blogs and other social media platforms. As per a recent estimate, interactions on Twitter alone result in over 500 million tweets perday. The magnitude of this data enables new applications of opinion mining that have previously remained challenging e.g., finding users’ stance (as in pro or con) on topics of interest. However, one of the major barriers to utilizing this amount of data is the cost of hand-labeling examples for...

Molecular Mechanisms of Pneumococcal Adaptation to Host Environment & Stress

Surya Aggarwal
The gram-positive bacterium Streptococcus pneumoniae (pneumococcus) is a leading cause of lower respiratory infections worldwide and is also responsible fordiseases such as otitis media, sinusitis, meningitis, endocarditis and sepsis. The progression to this pathogenic lifestyle is preceded by colonization of the nasopharynx.In order to successfully colonize the human upper respiratory tract (URT), pneumococcus must adapt to the unpredictable and hostile conditions of the human host. To achieve this, bacterial cells must adeptly reconfigure their cellular...

Fig. 6b_Optical and Ca images

Data set supporting the publication

Fig. 7a_Bright field and Ca images

Data set supporting the publication

Fig. 4b_Optical image.tif

Data set supporting the publication

Fig. 4b_Optical image.tif

Data set supporting the publication

Fig. 7a-b_DRG network Ca propagation.tif

Data set supporting the publication

Fig. 7a-b_DRG network Ca propagation.tif

Data set supporting the publication

Fig. 8_Spheroid network stimulation

Data set supporting the publication

Fig. 6c_Pulse viability.xlsx

Data set supporting the publication

Fig. 6c_Pulse viability.xlsx

Data set supporting the publication

Fig. 1d_SAED.tif

Data set supporting the publication

Fig. 1d_SAED.tif

Data set supporting the publication

Fig. 2b-d_NT3DFG photothermal characterization

Data set supporting the publication

Got a date with a database: Using lonely hearts ads and speed dating to introduce students to library resources

Teresa Macgregor & Jill Chisnell
Short article on conducting the library instruction activity, Speed Databasing, in Association of College & Research Libraries (ACRL) Instruction Section Semi-Annual Newsletter (Spring 2020).

Maintaining Utopia: Old Economy Village & Preparing for Eternity

Erin Mallea
From 2017–2018, I spent six months at Old Economy Village (OEV) to learn more about historic maintenance. Located along 18 miles northwest of Pittsburgh OEV “preserves and presents the life, thought, and material culture of the Harmony Society,” a religious, utopian, and socialist separatist community that settled in Pennsylvania in 1805.This paper examines the turbulent creation of the National Historic Landmark in 1916 and the site’s contemporary preservation practices as a larger meditation on the...

Effects of Climate Change on the Power System: A Case Study of the Southeast U.S.

Francisco Ralston Fonseca
The U.S. power sector faces several vulnerabilities due to climate change. On the demand side, increasing temperatures may result in shifting electricity consumption patterns and increase need for energy. On the supply side, changes in air temperatures, water availability, and water temperatures could reduce the capacity and effi?ciency of thermal units, which currently represent 85% of generating capacity. Previous studies that analyze climate change effects in the power sector have mostly focused on analyzing these...

Fully-Decentralized Coded Computing for Reliable Large-Scale Computing

In this thesis, I ask the question “how do we compute reliably using thousands of distributed, unreliable nodes?” We propose a system-level solution where we add redundant data across distributed nodes using the technique called “coded computing.” Our main contribution is developing strategies for a masterless, fullydecentralized
setting for important computation primitives in machine learning (ML) and scientific computing applications while minimizing the overhead of coding. For distributed matrix multiplication, we make a fundamental advance by...

Registration Year

  • 2020
    444
  • 2019
    843
  • 2018
    35,137
  • 2017
    129
  • 2016
    2
  • 2015
    8
  • 2014
    1

Resource Types

  • Text
    36,012
  • Audiovisual
    228
  • Dataset
    222
  • Collection
    36
  • Image
    36
  • Other
    20
  • Software
    8
  • Interactive Resource
    1

Affiliations

  • Carnegie Mellon University
    2
  • Carnegie Mellon University
    1