2013 Graduate Student WorkBelow you will find a compilation of the graduate participants who exhibited at Innovation with Impact in 2013 listed alphabetically by school, department, and first name. Included are the participant's name, exhibit title, and abstract.
Carnegie Insitute of Technology
Biomedical EngineeringPallavi Gunalan - Fabrication of Dissolvable Micro-Needles for Delivering Flexible Neural Probes
Current neural probe technology is limited by the chronic inflammatory reaction resulting from the use of stiff electrodes with large surface areas. We have designed a small, meandered microwire probe to minimize the mechanical mismatch between the probe and the brain tissue. A dissolvable material surrounds the probe for insertion into the brain tissue. The spin casting-based fabrication process for creation of these dissolvable micro-needles is novel, reproducible, and flexible, allowing for multiple, geometrically varied needles to be made on the same array. We have developed a protocol and performed an analysis confirming the repeatability of this process.
Chemical EngineeringAnita Lee - Characterizing Ionic Liquids for CO2 Capture
Ionic liquids (IL), known for their low volatility and wide range in molecular strutures, hold great potential as physical solvents for pre-combustion CO2 capture. The development of these solvents for pre-combustion CO2 capture solvents requires characterization of the solubility of CO2 under high pressure and an understanding of the relationship between this property and the molecular structure of the IL. We use Raman spectroscopy to characterize the CO2-solvent systems under pressure conditions relevant to pre-combustion CO2 capture using microliter volumes of solvent and develop a method for measuring the solubility of CO2 from the spectra. From the Raman spectra we can qualitatively describe the effects of molecular structure on CO2 solubility and also obtain a quantitative measure of solubility, the Henry’s law constant for CO2 in these ILs.
Christopher Wirth - AC electrophoresis of a particle in the direction normal to an ideally polarized electrode
2D colloidal crystals can be synthesized by applying an AC electric field to an ensemble of particles that have settled close to the working electrode. Surprisingly, the pairwise interaction of two particles is opposite in two different simple electrolytes under otherwise identical conditions. This difference means that the steady structure of a crystal during excitation depends on the dispersing electrolyte. Particles dispersed in KCl or NaHCO3 form closed packed hexagonal arrays, while particles dispersed in KOH or NH4OH form structures with much larger lattice spacing. Remarkably, the motion in the direction normal to the electrode (as opposed to lateral motion) of a single particle is crucial to the structure of the crystal. The first a priori model for the normal motion of a particle near an AC electrode will be presented.
Matthew Reichert - Microscale Fluid-Fluid Interfacial Measurements
In the aftermath of the Deepwater Horizon rig explosion, 5 million barrels of oil were released into the Gulf of Mexico from the resulting well leak. To emulsify and dilute the oil spill, surfactant dispersants were applied at both the water surface and directly onto the leaking well head. The latter scenario presents a complex and previously untested surfactant transport problem (high temperature gradients, large convective fluxes, coalescence events). To address these issues, we have developed a model oil-aqueous-dispersant system (squalane, simulated sea water or DI water, and Tween-80), and characterized this system with a recently developed microtensiometer.
Stephen Spagnol - Temporal alteration of nuclear structure and stiffness accompany gene expression changes from force and cytokine treatment
Genome regulation requires delicately balanced temporal and spatial control for proper cellular homeostasis and adaptation. Although DNA is a linear genetic code, recent studies have illuminated that genome organization within the nucleus facilitates regulation, and there is evidence that gene translocation within the nucleus leads to differential expression. The correlation of gene expression with gene position and movement in the mechanically stiff nucleus suggests there may be mechano-coupling impacting gene expression. We examine the effects of extracellular mechanical and biochemical stimulation on nuclear organization and the time-dependent reorganization of nuclear structures, altered chromatin condensation, gene movement and altered gene expression.
Todd Moyle - Predicting Microscale Tipstreaming for Soluble Surfactants
Microscale tipstreaming is a unique method to overcome the limiting length scale in microfluidics allowing for production of submicron-sized droplets. Tipstreaming is the ejection of small drops from a liquid thread formed by interfacial tension gradients and convective transport of surfactant. Controlling and understanding this process is essential for successful application in areas such as synthesis of nano-scale particles, manipulation of biomolecules, enzyme activity studies, and others. Results from a mass balance based model of tipstreaming are compared with our own experimental results.
Civil & Environmental EngineeringAlyssa Moore - Development of a process-based model to estimate beef cattle ammonia emissions
Ammonia is an important air pollutant. It is an irritant and a precursor to the formation of fine particulate matter in the atmosphere. The livestock industry emits between 70-90% of ammonia emissions in the United States. Beef cattle contribute more than 25% of livestock ammonia emissions, so it is important to better understand and estimate ammonia losses from beef cattle. Measurements can only help us estimate emissions for a specific set of practices and meteorology, so a model that describes how emissions occur throughout the manure management process is needed to better estimate ammonia emissions from beef cattle.
Jason Marshall - Multiscale Mechanics with Electrostatic Interactions
Complex geometric features such as cracks and free surfaces play a crucial role in the structure and interaction of atomic-scale defects. A key challenge is atoms in electromechanical materials interact through long-range electrostatic forces, leading to different mechanics than in structural materials where interactions are primarily short-range. The long-range interactions are intractable to existing atomistic multiscale methods that are geared towards short-range interactions. Our method, based on rigorous ideas of continuum limits of dipole lattices, deals with this challenge by exploiting the atomic-scale polarization density as a multiscale mediating quantity.
Kamran Karimi - Soft particle packings near jamming: correlations in static structure
We extend our previous results report on 2D simulations of soft harmonic packings at various area fractions φ above the jamming point φc. We employ several statistical analyses to determine whether one or more characteristic lengths can be associated with either the quenched stress field in the packing or the structure of local elastic moduli. First, we define a locally anisotropic variant of the standard two-point correlation function. This anisotropic correlation function follows a power law even in globally isotropic stress states with a φ independent exponent and no discernible cutoff within the statistically accessible regime. Secondly, we define a coarse-grained stress field on a scale R. The average anisotropic component and the fluctuations in the trace can both be collapsed onto similar master curves after rescaling R by a characteristic length scale ξ. ξ accelerates as φ approaches φc, consistent with a divergence at φc. Surprisingly, a similar analysis on the local coarse-grained elastic modulus tensor shows a non-trivial power-law scaling behavior as a function of the coarse-graining size yet no characteristic ξ as exhibited by the stress.
Mohan Jiang - Life cycle water impacts of Marcellus shale development
This study estimates the direct and indirect water consumption and emission impacts of Marcellus shale well from its construction to end-of-life. Direct water use is assessed based on information provided by well drillers in Pennsylvania from 2009 to 2011. Indirect water use is estimated with an economic input-output life cycle assessment (EIO-LCA) method. The potential environmental toxicity of Marcellus gas associated produced water was compared to that of supply chain water quality impacts using the Tool for the Reduction and Assessment of Chemical and other environmental Impacts (TRACI). Further, a water use impact characterization factor was proposed to monetize the environmental impacts of Marcellus wastewater based on treatment cost. Four case scenarios were defined for impact assessment: typical case under present situation; high impact case assuming all flowback water and produced water are released to the environment; balanced case when all produced water is treated via desalination; high cost case when all flowback water and produced water is treated via desalination.
Electrical & Computer EngineeringAkshay Rajhans - Addressing Heterogeneity in Model-Based Development of Cyber-Physical Systems
Cyber-physical systems (CPS) are systems with computers sensing and controlling the physical world. CPS are ubiquitous in today’s world: cars, planes, smart grids, chemical plants, robots and pacemakers are just a few examples. CPS are heterogeneous, because they tightly couple computation, communication and control with physical dynamics. Without a comprehensive modeling formalism, model-based development of CPS involves using a multitude of models that capture various aspects of the system design. In current practice, lack of a unifying framework forces ad hoc system integration and analysis. Here, we present some contributions in addressing heterogeneity using an automotive CPS example.
Ankush Kochhar - Using Scan Diagnosis To Characterize DFM Rule Performance
This work tries to evaluate the performance of Design for Manufacturability (DFM) rules. These rules are implemented on chip designs with the idea that a chip which has these will be easier to fabricate and hence less prone to failures, thus increasing the overall yield. However, implementing these rules is expensive in terms of design time and effort and hence, a quantitative idea of the return-on-investment is helpful. This work tries to establish whether or not and to what degree implementing these rules helps in avoiding chip failures. It also tries to rank rules in order of importance.
Jian Li - Otitis Media Vocabulary And Grammar
We propose an automated algorithm for classifying diagnostic categories of otitis media acute otitis media, otitis media with effusion and no effusion. Diagnosing children with AOM is hard, leading to over-prescription of antibiotics, prompting a need for an accurate and automated algorithm. To that end, we design a feature set based on the actual visual cues; we term this otitis media vocabulary. We also design a process to combine the vocabulary terms; we term this otitis media grammar. The algorithm achieves 84% classification accuracy, in the range or outperforming pediatricians who didn’t receive special training, as well as state-of-the-art classifiers.
Miray Kas - Incremental Centrality Algorithms for Dynamic Network Analysis
The increasing availability of digital libraries and social networking websites has led to an upsurge of interest in the analysis of large-scale social networks. To date, a wealth of social centrality measures have been designed for determining the importance of nodes in a social network from different aspects. This work proposes incremental algorithms for the two most popular shortest-path based social centrality metrics that avoid computations from scratch by performing early-pruning in dynamic networks. The key idea is to start with the old output and modify only the affected. Our results show that incremental approaches can achieve substantial performance benefits.
Engineering & Public PolicyAlan Jenn - Trends in Future Vehicle Fleet Mix in Response to Corporate Average Fuel Economy Standards (CAFE) Using an Optimization Construct
We examine the optimal pricing strategy to reduce costs and resulting mix of vehicle technologies and classes resulting from the implementation of corporate average fuel economy (CAFE) standards in 2012 through 2025. With a basic treatment of consumer response, we see significant decreases in vehicle allocations and a reduction in manufacturer profits as high as 30% under certain scenarios. We are also able to observe responses to various incentive policies and their cost-effectiveness in reducing gasoline consumption and greenhouse gas (GHG) emissions. We find that in general, the new CAFE standards yield savings for both gasoline consumption and GHG but less effectively than the Environmental Protection Agency’s (EPA) original estimates.
Amy Dale - Modeling Transformations in Freshwater Sediments for Nanosilver Risk Assessment
Nanosilver, an effective antibacterial agent, is one of the largest and fastest-growing applications of nanotechnology in consumer goods. The use of nanosilver-containing products results in the release of nanosilver to surface waters and aquatic sediments. The toxicity of silver in surface waters and sediments will depend greatly on the nature and extent of chemical transformations the nanoparticles undergo. To date, no environmental fate models exist that describe these transformations. Here, we present a model for predicting silver nanoparticle distribution and silver speciation in freshwater sediments.
Chia-Hsuan Yang - Gains from Others’ Losses: Technology Trajectories and the Global Division of Firms
After the burst of the telecommunications bubble in March 2000, the majority of U.S. optoelectronic component firms moved manufacturing offshore. This research explores whether (1) due to the different offshore production economics, firms who move manufacturing offshore stop or slow U.S.-based R&D activities in emerging monolithically integrated technologies necessary to access larger markets and (2) inventors originally within these offshoring firms, leave, and continue to innovate in monolithic technologies at different institutions.
Huimin Tan - Assessing federal regulations on mercury emissions from lighting
Lighting constitutes about 20% of U.S. electricity consumption. Efficient lighting technologies such as Compact Fluorescent Lamps (CFL) and Light Emitting Diodes (LEDs) hold a great potential to save electricity and avoid upstream emissions from electricity generation. However, if CFLs are widely adopted, there is a trade-off in what concerns mercury emissions: CFLs will lead to reductions in mercury emissions from coal and oil-fired power plants, but since they contain mercury, emissions to the environment may occur due to breakage. In this analysis, we examine the net mercury emissions from residential lighting sector resulting from two recent policies: the lighting energy efficiency mandates established by Energy Independence and Security Act of 2007 (EISA) and the Clean Air Act (CAA).
John Helveston - Comparing Consumer Preferences for Electrified Vehicles in China and the U.S.
This research focuses on quantifying consumer preferences for electrified vehicle technologies in both China and the U.S. We design and field equivalent choice-based conjoint experiments in China and in the U.S. during the summer of 2012.
Paul van der Boor - Innovation by users in emerging economies: evidence from mobile banking services
This paper examines the extent to which users in emerging economies innovate, and whether these innovations are meaningful on a global stage. To study this issue, we conducted an empirical investigation into the origin and types of innovations in financial services offered via mobile phones, a global, multi-billion dollar industry where emerging economies play an important role. Our analysis shows that 85% of the innovations in this field originated in emerging markets. We also conclude that at least 50% of all mobile financial services were pioneered by users.
Stefan Schwietzke - Reducing uncertainty in life cycle CH4 emissions from natural gas using atmospheric inversions
The research objective of my dissertation is to reduce uncertainty in fugitive methane emissions from the natural gas (NG) industry. Fugitive methane is one of the most important factors in determining the climate impacts of NG compared to coal. I am collaborating with a climate science research group to analyze which range of NG leakage in the LCA literature gives the best agreement with global atmospheric methane observations over time.
Materials Science & EngineeringHoan Ho - Controlling Microstructure and Magnetic Properties of L10 FePt Magnetic Media Using Underlayers
High anisotropy L10 FePt is well known to be the most probable magnetic material for Heat Assisted Magnetic Recording (HAMR). Achieving good grain morphologies, grain-to-grain uniformity, perpendicular (001) textures, and high chemical order still remain challenging for its commercial applications to be realized. An experimental approach to enhance the height-to-diameter ratio of FePt columnar grains is demonstrated. The FePt-SiOx thin films are deposited with a decrease of the SiOx percentage along the film growth direction. Fine grain size RuAl underlayer is employed to obtain full grain isolation for SiOx segregant. TiN or MgO interlayer functions as barrier layer to block diffusion of Al from RuAl to FePt. The effect of RuAl grain morphology including small size and domed shape on the microstructure and magnetic properties of FePt-SiOx is assessed. The impact of lattice constant, surface energy, and atomic diffusion of TiN and MgO on the L10 ordering, granular microstructure, and magnetic properties of FePt is investigated. The final goal is to obtain the control of grain size and size distribution for FePt-based media via novel underlayers.
Huseyin Ucar - Tuning the Curie Temperature of γ-FeNi Nanoparticles for Magnetocaloric Applications by Controlling the Oxidation Kinetics
In this project, the goal is to synthesize robust materials that can be used in cooling devices surrounding us. Magnetic refrigeration relies on magnetic materials’ tendency to heat up upon the application of a magnetic field. This effect is maximized at the temperature where the transition from ferromagnetic to paramagnetic phase takes place. Hence it is crucial to engineer new materials that are cost-effective, easy to process with transition temperatures near room temperature. We believe that nanostructured γ-FeNi could meet these expectations while some minor issues related to this alloy system still needs improvement.
Lauren Powell - Determination of the Photooxidation Mechanisms in CdSe Quantum Dots
Realization of the potential of Quantum Dots (QDs) for biological, energy-efficient lighting and energy harvesting applications requires that their long-term photostability be improved, especially with regards to protection from photooxidation. The overarching objective of the research proposed is the determination of the chemical and physical mechanisms of photooxidation of CdSe QDs. Crystalplex Inc. of Pittsburgh, PA has provided uniform CdSe QDs with defined ligands that will be separately exposed to either water vapor carried in N2 or wet- and dry-O2 and light in a controlled manner to induce photooxidation. On going in situ x-ray photoelectron spectroscopy (XPS) will be expanded to identify the chemical and bonding states of the reacting species. The microstructure and optical properties of the unoxidized and photooxidized QDs are being characterized with in situ high-resolution electron microscopy and optical spectroscopy. A thermodynamic study will also be performed for evaluation and comparison of experimental data. The knowledge acquired from these investigations will be integrated to determine the mechanisms of photooxidation.
Siyang Xu - Magnetic Nanoparticles Based Solder Composites for Electronic Packaging Applications
Sn-Ag-Cu (SAC) alloys have been regarded as the most promising candidates of for lead-free solders in the electronic packaging industry. We prepared SAC solder-FeCo magnetic nanoparticles (MNP) composite paste with different MNP concentration and used AC magnetic fields localized heating to cause their reflow . Differential Scanning Calorimetry(DSC) results show a reduced undercooling of the composite paste with the addition of MNPs. X-ray powder diffractometer(XRD) patterns and optical micrographs show a decrease in the amount of primary Ag3Sn and b-Sn dendrites, and an increase in the amount of eutectic microconstituents with increasing MNPs. The addition of FeCo MNPs is considered to promote the heterogeneous solidification of b-Sn at a relatively low undercooling, which results in the microstructural evolution in the as-prepared solder joints. The microstructure refinement would further enhance the mechanical properties of solder composites.
Mechanical EngineeringAnkit Jain - Thermal Conductivity of Nanostructures
A thermal conductivity reduction of up to two orders of magnitude from bulk has been reported in silicon thin films with a periodic arrangement of unfilled pores (i.e., a porous thin film). In this work, we use finite element method calculations, lattice dynamics calculations, the Boltzmann transport equation, and a phonon-boundary scattering model to identify the mechanisms of the reduction. Porous thin films with hexagonal, square, and triangular arrangement of pores are considered. For the square lattice, we also study arrangements with a distribution of pore sizes.
Bekir Bediz - An Impact Excitation System for Repeatable, High-Bandwidth Modal Testing of Miniature Structures
This study presents a novel impact excitation system (IES) for repeatable and high-bandwidth modal testing of miniature structures. The system includes a miniature force sensor attached to a custom designed flexure-based body. The system functions by releasing the flexure from a specified initial deflection. An automated release mechanism driven by an electromagnet is designed for repeatable release of the flexure from the initial deflection. Upon release, the impact tip hits the test structure, which is placed at a specified distance away from the undeflected position of the tip. The constructed IES allows controlling the impact force and the excitation bandwidth by providing capability to modify (1) the flexure geometry and dimensions; (2) added mass to the impact tip; (3) the initial displacement amplitude; and (4) the initial gap between the tip and the test sample. To assist in determining the IES parameters for single impact hits within a specified force limit, a model of the IES including a dynamic model of the flexure-based body, an empirical model of the electromagnetic force and damping, as well as a Hertzian model of the impact event, is developed and experimentally validated. The excitation bandwidth, impact force, and impact location repeatability of the IES are then compared to those obtained through manual application of a miniature impact hammer. Lastly, the application of the IES is demonstrated through modal testing of a miniature contact probe system.
Bryony DuPont - Wind Energy Systems Optimization
As the population of the world grows and sources of fossil fuels such as coal and natural gas dwindle and become more difficult and costly to access (as well as a major cause of greenhouse gas emissions), it is imperative that clean alternative energies, such as wind power, are thoroughly explored. This work explores a computational optimization technique that ensures that newly developed wind farms are performing optimally, that is; they develop as much power as possible, given local wind conditions of the proposed site, turbine geometry, and site characteristics.
Elizabeth Traut - U.S. Residential Charging Potential for Plug-In Vehicles
Availability of residential charging infrastructure could be a limiting factor for fleet penetration of plug-in vehicles in the U.S. We assess existing and potential residential charging infrastructure using two national data sets. We find that about 38% of households but only 22% of vehicles have dedicated home parking within reach of an outlet sufficient to recharge a small plug-in vehicle overnight. We find that 79% of households but only 56% of vehicles have access to dedicated home parking where charging infrastructure could be installed. We discuss sensitivity of results to uncertain factors and implications for of plug-in vehicle market forecasts.
Jason Larkin - Predicting the Thermal Conductivity of Alloys using the Virtual Crystal Approximation
The Virtual Crystal (VC) approximation can be used to predict the thermal conductivity of mass-disordered alloys from phonon properties, which are plane-wave vibrations that extend over the entire macroscopic sample. The vibrations in a disordered system are only phonons in the low-frequency, long-wavelength limit. The VC approximation predicts phonon properties by treating disorder as a perturbation, but the general applicability of this is not clear. The VC approximation is evaluated by examining two model alloy systems, argon and silicon, which have different thermal conductivity spectra. The VC approximation accurately predicts the properties of low-frequency, long-wavelength phonons, but fails at high-frequencies.
Jeremiah Mpagazehe - A Computational Modeling Framework to Predict Tribological Phenomena
Tribology, the study of friction, lubrication, and wear, is an important component in many industrial and natural processes. This work focuses on the development of a physics-based, Eulerian-Lagrangian modeling framework to predict tribological phenomena. In this framework, computational fluid dynamics (CFD) is used to model the Eulerian fluid phase. A particle modeling technique called the discrete element method (DEM) is used to model the Lagangian particulate phase. An overview of tribological applications is first provided. Then, the details of the framework and its implementation in the C++ computing environment are described.
Michael Burkholder - Nonlinear analysis of two phase flow dynamics in a polymer electrolyte fuel cell cathode
Cathode water management in polymer electrolyte fuel cell systems used to power zero emission electric vehicles can be problematic under certain operating conditions. Removing excess water is parasitically expensive but necessary for reliable performance. In this work, we analyze the dynamics of liquid water accumulation and removal using state space techniques for nonlinear and chaotic systems. Using fuel cell voltage and cathode pressure drop signals, we characterize the dynamics by estimating the attractor dimension and entropy for different cathode flow field configurations. We also estimate the dynamical stability of the voltage return map under various operating conditions.
Noah Tovares - Capturing Preference Through an Interactive Virtual Reality Experience
Capturing consumer preference in the early stages of the design process, without the need to create physical prototypes, will enable designers to more effectively devote time, effort, and finances toward creating products that address consumer desires. Visual conjoint is a powerful method for capturing consumer preference. With the advent of affordable and accurate virtual reality technology, the extension of visual conjoint analysis into the virtual realm is a promising direction. This work details the creation of an immersive, interactive, and realistic 3D virtual environment in which users are able to provide preference judgments based on a multi-sensory experience.
Robert Brik - Medical Devices Summit Summary
Lessons learned and interesting information from the 2013 Opal Medical Devices Summit that was held in Boston, MA.
Samarth Raut - Summer Bioengineering Conference 2012
Annual mortality from ruptured abdominal aortic aneurysm (AAA) in the United States alone is approximately 150,000, which is currently ranked as the 13th leading cause of death and the 10th leading cause of death in men over 55 years of age . The vascular surgeon needs to weigh the risk of AAA rupture against the risk of surgical intervention to decide the best course of treatment. Several steps are involved when using computational techniques to evaluate risk of rupture , namely medical image segmentation, 3D reconstruction, finite element mesh generation, derivation of boundary conditions, specification of tissue material properties, etc. Currently, computational analysis of AAA biomechanics includes the use of multiple third-party commercial software tools to accomplish each of these steps, which makes its clinical implementation impractical, time-consuming and requiring to interface multiple software tools as this demands an engineering skill set. Additionally, the versatility of general purpose off-the-shelf software comes at the cost of simplifying assumptions regarding geometric modeling, limited user control and boundary conditions. This makes subsequent computational results vulnerable to inaccuracies. In this work, we describe the software tool AAAVASC, built on a MATLAB platform, with an integrated approach for image-based modeling and a novel pipeline that facilitates both geometry quantification and computational analysis of AAA biomechanics.
Wee-Liat Ong - Thermal Transport in Nanocrystal Superlattices
Nanocrystal superlattices (NCSLs) are 3-D arrays of inorganic spheres linked by self-assembled organic chains that are a promising class of materials for thermal management and energy conversion applications. NCSLs thin films are fabricated using solution-based chemistry, which is much cheaper than conventional nanostructuring methods. As their electronic and thermal transport can be decoupled, these thin films have the potentials to be tailored according to the needs of various applications (e.g. high figures of merit materials for thermoelectric, high-efficiency photovoltaic materials). Electronic transport in NCSLs has been studied extensively. Little is known, however, about the mechanisms of thermal transport. We report the first measurements of NCSL thermal conductivity as well as preliminary modelling work performed to elucidate the thermal transport mechanisms.
College of Fine Arts
ArchitectureAlejandra Munoz Munoz - ARCSA 2012
The American Rainwater Catchment Systems Association (ARCSA) Annual Conference held in Raleigh, North Carolina on September, 2012 was educational, thought provoking, and very interesting. A surprising aspect of the 2012 ARCSA conference was its focus on academic research. The PhD student Kathy DeBusk presented her research study on overwatering of landscaping as management practice of stormwater run-off control with the support of rainwater cisterns. Her results show that gardens and lawns do not suffer damage and infiltration is not affected. Such practice could be used to control stormwater run-off on cities with combined sewer overflows.
Duy Vo - Helionastic Facade Exploration
The Mimosa Pudica, of the Fabaccae family is nicknamed the sensitive plant or “touch-me-not” for its response to external stimulus by drooping down and shutting its leaves. This attribute inspires a thought process that aims at applying this movement to an architectural application. The project undertaken outlines an idea that could be used in real time. Our research aims to emulate this phenomenon, to recreate it in a way that it can be incorporated as a functional element in the building, interweaving the principles of energy efficiency and aesthetics with the existing design scope. The design of a moving petal system inspired by the nastic movements of the mimosa pudica is created with shading and solar energy harvesting as its major functions. The mechanism of the device functions on the principles of contraction of Nitinol which is triggered as a function of light intensity, with more light causing the wings to unfold. This phenomenon is used to shade the surface above which the device is fixed. By generating arrays of the same prototype, we hypothesize that it shall be possible to harness the incident solar energy by mounting solar panels on the wing surface and generate interesting shading patterns.
Karl Willis - Rapid 2012
A report from the Rapid 2012 Society of Manufacturing Engineers Conference
Craig Fahner - Import/Export
In October of 2012 I had the opportunity to exhibit 5 of the artworks I've developed at CMU in a solo exhibition in Montreal entitled Import/Export. Themes explored in this exhibit include the intersections between the body, technology and music, examining the potentials of the body through interactive sound installations. CMU's conference funding allowed me the opportunity to travel to Montreal to install this exhibit.
Elizabeth Buschmann - Gross National Product
Gross National Product is a performative art project concerned with the interspecies interactions between humans and the invasive Asian carp. Manifest in interviews, video documentation, first person monologue and the product of in-depth research, my investigations concern an unresolved idea of what is “natural” in the 21st century.
Felipe Castelblanco - Artist talk: We Paint Houses
“We paint houses” is a participatory project that takes the form of a temporary business established by Felipe Castelblanco (MFA'13) and Latino laborers living in Portland. For an entire week, the group offered to paint people's houses through street advertisement. However, instead of painting the walls of the Portland’s houses, artist and laborers created actual paintings—on canvas—of the façade of the buildings, while engaging customers / audiences in a situation that re-imagined the act of exchange. This performance explored mistranslation, misrepresentation and labor, while producing contentious encounters between locals and immigrants, workers and artists.
JaeWook Lee - Creative Time Summit 2012 - Conflict Kitchen
Conflict Kitchen - North Korea iteration. On Day One of the Summit, we hosted lunch for over 200 Summit attendees and presenters in collaboration with Conflict Kitchen at the historic Judson Memorial Church. Pittsburgh based Conflict Kitchen is a take-out restaurant that serves cuisine from countries with which the United States is in conflict. For the Summit, we offered North Korean food.
Scott Andrew - Primate Enrichment: Promoting decision making and problem solving through novel objects for Callitrichid and other non-human primate enrichment
Captive primates need varied mental stimulation. We have been exploring possibilities in creating traditional enrichment devices that stimulate creative responses in non-human primates at the Pittsburgh Zoo. We have introduced Orangutans and Tamarins to interactive objects such as water fountains and puzzle feeders that serve as enrichment. This poster covers research in prototyping devices that promote decision making, and creative problem solving, while offering variation into the daily lives of Cotton Top Tamarins.
Steve Gurysh - How to improve the world (you will only make things worse)
This digital video is a collaborative artwork created by Steve Gurysh and Craig Fahner. The work is a cinematic documentation of a torch relay carried out by the artists in 2012. In the narrative, the protagonists transport a flame in four continuously looping acts. Throughout its journey, the flame is transported, transmitted, and transformed in increasingly absurd ways. Shot on multiple sites such as the Beaver Valley Nuclear Power Plant, the 1976 Montreal Olympic Stadium, and the burning ruins of Centralia, PA, the relay evokes mythological quests for fire as well as historical transmissions of energy.
Shahrzad Samadzadeh - Insights & Implications from Interaction 13
Interaction 13 was the 2013 edition of the yearly conference put on by the Interaction Design Association (IxDA). Over the course of 4 days, speakers presented a combination of cutting edge thought, concepts, and suggestions for the Interaction Design community worldwide. My presentation captures key insights and personal highlights from the many talks I was able to attend.
Shree Lakshmi Rao - Interaction13- Designing for social impact
My poster will give the audience a brief introduction to interaction design and the Interaction13 conference that I was able to attend because of support from GSA and the Provost's office. Details of the talks and their application to interaction design as it stands now will also be explore.
Somya N Jampala - Multicultural values of Indian immigrant families in the United States
The United States is becoming increasingly culturally diverse. It is estimated that by the year 2050 almost half – 49.9% of the population will be non-Caucasian (U.S. Census Bureau, 2000). The range of diversity in the United States opens up a new brave world of global connections and multicultural relationships. While it brings greatest opportunity and choice about how we live our lives, there is a challenging side to diversity. In the context of sustaining their own cultural identity, how can parents blend their cultures over time to a third culture as they raise children in the United States?
Chris Rummel - An Exploration of Alternative Methods and Tools for Composition in Theatrical Sound
For my MFA thesis, I am examining unconventional methods of sound composition through the conceptual lens of sound design for two plays, Macbett by Eugene Ionesco, and please take care of me (an original play based on the works of Haruki Murakami), currently in rehearsal in school of drama. My goal is to look at alternative technology and techniques as a tool for composition, and to develop solutions to standardize these techniques for use in the theatrical sound design process. I will be examining the benefits and shortcomings of each of these techniques against my standard design process. My work includes research on past uses of alternative composition tools in theater and performance, and the integration of that research into my experiment and analysis as the process moves forward.
Lindsey Slaugh - Patterning Historical Fashions
In collaboration with the Shippensburg University Archives and Museum, three nineteenth-century dresses were examined during multiple site visits. The dresses were documented in detail and advanced costume patterning techniques were used to create exact patterns from the original garments. From these patterns, replica dresses were produced. The patterns will be scaled to 1/8 scale and made available to the costume community for use in research and recreation of period garments.
Paula Ries - Historic Collections and Museum Visit
I used my Gush Conference Funding grant to go to a conference called Legal Issues in Conservation & Collections Management: What Could Go Wrong? The other GUSH grant I was awarded was used to visit to the Fashion Institute of Technology’s Historic Collection to view some of their items for my produced thesis called “The Tender Land” to see cotton dresses from the 1930’s. I also saw exact cotton copies of fragile garments that pertain to the second part of my thesis of patterning and recreating a historic garment from our Historic Costume Collection.
Dietrich College of Humanities & Social Sciences
Center for Neural Basis of CognitionKubra Komek - Modeling the effects of dopamine in auditory cortical entrainment in schizophrenia
Schizophrenia is a highly complex disorder with deficits in various modalities, including perceptual deficits in the auditory domain. One useful approach for characterizing the neurophysiological basis of auditory cortical deficits has been the utilization of EEG steady-state responses entrained to external periodic stimuli, allowing testing of the functional state of the networks subserving synchronous activity. Individuals with schizophrenia show deficits in entraining to auditory stimuli in the gamma-frequency range, particularly at 40 Hz. Employing the auditory steady-state paradigm, we hypothesized that administration of amphetamine, which increases dopamine levels by facilitating release and inhibiting reuptake, would improve gamma-range auditory entrainment in schizophrenia patients and produce minimal change or decrease it for healthy controls. Our empirical results supported our hypothesis and showed that this effect was more specific to the gamma-range and not reproduced for other frequencies. To verify and replicate this observation computationally, a network composed of 50 excitatory (Wang-Buzsaki) and 20 fast-spiking inhibitory (Wang-Buzsaki) neurons coupled with all-to-all connectivity was formulated. Periodic forcing at different frequencies (40, 30, and 20 Hz) was applied and the network entrainment to the driving frequencies was analyzed. The network’s behavior corresponding to different levels of dopamine, implemented as varying levels of the leak K+ conductance of the inhibitory neurons, was analyzed. For the 40 Hz forcing case, parametrically varying the leak K+ conductance revealed an inverted-U shaped relationship, with low gamma band power at both low and high conductance levels, with optimal synchronization occurring at intermediate conductance levels. A similar inverted-U shaped relationship was obtained for the periodic forcing at 30 Hz, though less robustly. However, 20 Hz forcing case did not reveal such a non-monotonic relationship, suggesting that the effect was more specific to periodic forcing at gamma band range, in line with the empirical findings in auditory steady-state entrainment in healthy controls and individuals with schizophrenia. In conclusion, our results show that the physiological effects of dopamine on single fast-spiking interneurons can give rise to a non-monotonic relationship between cortical gamma band synchrony and dopamine levels with absence of a similar relationship for entrained responses at lower frequency ranges (e.g. beta), consistent with our empirical findings in schizophrenia of specific modulations oscillations in the gamma band by dopamine modulation.
EnglishKristin Shimmin - Rhetorical Conceptions of Science in Lectures on Chemistry and Natural Philosophy archived at the American Philosophical Society, 1800-1840
To examine foundations for public conceptions of science in the pre-civil war period, I analyze early nineteenth-century manuscripts of chemistry and natural philosophy lecture notes archived at the American Philosophical Society. Specifically, this project surveys how the lectures discuss the value and social role of science. Research has shown that British lectures in this period, like those of Humphrey Davy, illustrate a rhetorical shift from demonstrating value by appealing to wonder and making generalized statements about use to incorporating concrete and specific use-based assessments. This project suggests that a similar rhetorical shift happened in the American lectures within this period.
HistoryAndrew Simpson - Planning for the Medical Metropolis: Creating A Biomedical Research Economy in Pittsburgh, 1960-2005
This research examines how elite growth coalitions and not-for-profit institutions charted a new path for Pittsburgh focused on biomedical research and engineering from 1960 to 2005 by seeking to leverage existing medical and university assets while simultaneously growing new and disruptive technologies, like transplantation medicine, as symbols of a new identity for a post-industral Pittsburgh.
Dawn Winters - You Can Do It With A Hatchet: Women’s Temperance Activism in the American Midwest, 1850-1874
My dissertation examines systematic and collective attacks by female temperance advocates on liquor selling establishments, saloons, grocers and druggists with axes, hatchets, and other implements in the American Midwest from 1850-1874. It represents the first in-depth analysis of activists’ adoption of aggressive, collective, and violent tactics as a mode of legitimate and justifiable reform. By literally taking matters into their own hands, they not only made a forceful and unmistakable statement, but also engaged in broader public discussions on the function of the legal system and the role of local politics in regulating community morals in nineteenth-century America.
Jay Roszman - Outrage -- Irish Agrarian Violence in the Archives
"Outrage - Irish Agrarian Violence in the Archives" is a collection of important documents that I encountered while in the archives throughout Great Britain and Ireland. These documents form the basis of my dissertation examining British perceptions and policy regarding particular forms of Irish agrarian violence, colloquially known as 'outrages'.
Jiacheng Liu - The Emergence of Actresses and Their Challenges in the Beijing Theatrical World, 1912-1919
My dissertation project seeks to revise this “male-centered” paradigm in the Chinese theatre historiography by focusing the entrance of actresses into the theatre profession and its challenge to the previously male-dominated urban theatrical world in Beijing from the late Qing to Republican China. It aims to highlight the much more active role that actresses played in in the broader context of changing constructions of gender, the formation of a “theatrical public” and the creation of a new Chinese nation since the late 19th century than prior scholarship has asserted.
Maroon David - Cancelled Claims: How the West Was Lost Under the Homestead Act of 1862
The Homestead Act of 1862 is arguably the most misunderstood law in American history. A year after its passage, a Civil War veteran filed a claim for a 160 acres in Pottawatomie County, Kansas. Edward Kellogg farmed there until 1872, the year his claim got cancelled in bright red ink. He was not alone. Kellogg and thousands like him learned-- the hard way-- a lesson that historians have never learned at all: that homesteading was not a path to land ownership for most who applied. No significant attention has been given to this ratio of disappointment, but cancelled homestead applications are central to the operation and evolution of this landmark legislation. Based on cancellation records held at the National Archives, my paper, “Cancelled Claims: How the West Was Lost Under the Homestead Act of 1862,” explains how nearly two-thirds of claimants lost their land.
Meredith Soeder - “‘Jazz’ it is—and ‘jazz’ it will remain”: German Perceptions of American Jazz, 1918-1933
The Americanization of Germany, particularly during the Weimar Republic (1918-1933), has been a contested concept. In this presentation, I argue that German contemporaries debated American jazz music because of its significance to German musical culture. Some commentators welcomed jazz music; others detested it. I will examine the reception of American jazz, speak about jazz as a contested art form for German national identity, and finally, demonstrate how American jazz orchestra leader Paul Whiteman symbolized many of the debates German commentators had when he and his music came to Germany in 1926.
Michael Gallen - Christianity and Capitalism in Liberia
My presentation will examine materials found at the Massachusetts Historical Society and the Liberian National Archives at Bloomington to show how Christianity and capitalism interacted in Liberia.
Rachel Oppenheimer - “’That Was Hardly Pleasurable:’ The Construction of a Politically Motivated Prisoner Hierarchy in Northern Ireland and the United States, 1969-1985”
"'That Was Hardly Pleasurable:' The Construction of a Politically Motivated Prisoner Hierarchy in Northern Ireland and the United States, 1969-1985" was presented at the Midwest Conference for British Studies in October 2012. My paper compares the incarceration of members of the Irish Republican Army, and Loyalist Paramilitaries in Northern Ireland and Black Panther Party and Weather Underground in the U.S. I demonstrate that the governments of the U.S. and Northern Ireland showed different levels of tolerance for internal rebellions, creating environments where, with the aid of their penal institutions, they established hierarchies of dissent in attempts to uphold their power structures.
Modern LanguagesAshlie Henery - Pragmatic Production and Awareness Development in the Study Abroad Context: A Summer in France
The study abroad (SA) context provides a rich environment for language students to acquire pragmatic competence. The current study explores how both students’ production and awareness or understanding of French greetings and leave-takings developed over the course of a summer SA program in the south of France. Keywords: study abroad, pragmatic competence, French
Mamoru Hatakeyama - Lexical Inferencing in L2 Japanese Reading: L2 Proficiency and L1 Reading as Predictors of Semantic Gap Filling (SGF) at Word Level
For lexical inferencing in L2 Japanese (i.e. Semantic Gap Filling: SGF) one has to be a good reader and proficient in the L2. This research asked (1) which of the subcomponents of L2 Linguistic Knowledge correlates with L2 SGF, and (2) to what extent L2 SGF can be explained from L1 reading and L2 Linguistic Knowledge. L2 proficiency seemed to account for variance in L2 SGF when participants’ L1 was not controlled while L1 reading was a strong predictor of L2 SGF when participants were limited to English L1 speakers who had no prior exposure to Kanji before studying Japanese.
Wenhao Diao - Socializing stance in the youth space during a semester in China
China is America’s fifth most popular study abroad destination (Institute of International Education, 2012). Drawing upon language socialization theory (Ochs & Scheiffelin, 1984), this study seeks to understand the L2 learning experience among the sojourners in China. Specifically it documents how a cohort of American students was socialized into using Mandarin sentence-final particles (SFPs) during their semester in Shanghai. As a part of transnational Chinese linguistic practices, these particles are assigned nuances among China’s urban youth (Zhang & Kramarae, 2012). The analysis illustrates how these speakers assigned meanings to the SFPs, and how these interactions shaped the students’ SFP use.
Yan Liu - Semantic Gap Filling (SGF) in Chinese as a Foreign Language
People read for different purposes, of which the most important one is to learn. While reading, readers often encounter unknown information and this unknown information creates a semantic gap in the text. In order to grasp the content of the text, readers have to fill the semantic gap by using known information available in the text. The study proposed a L2 semantic gap filling (SGF) model and tested it among English-speaking learners of Chinese as a foreign language (CFL). The model was confirmed. Based on the results, pedagogical implications were proposed for future Chinese reading instruction and assessment.
PhilosophyMate Szabo - Kalmar’s Argument Against the Plausibility of Church’s Thesis
In his famous paper, An Unsolvable Problem of Elementary Number Theory, Alonzo Church (1936) identified the intuitive notion of effective calculability with the mathematical notion of recursiveness. This proposal, known as Church's Thesis, has been widely accepted. Only a few papers have been written against it. One of these is Kalmár's An Argument Against the Plausibility of Church's Thesis from 1959. The aim of this paper is to present this argument in detail and to attempt to make it more appealing drawing on the core views he expresses in his other papers on the philosophy of mathematics.
Sarah Wellen - Learning Causal Structure through Local Prediction-Error Learning
Research on human causal learning has largely focused on strength learning, or on computational-level theories; there are few formal algorithmic models of how people learn causal structure from covariations. We introduce a model that learns causal structure in a local manner via prediction-error learning. This local learning is then integrated dynamically into a unified representation of causal structure. The model uses computationally plausible approximations of (locally) rational learning, and so represents a hybrid between the associationist and rational paradigms in causal learning research. We conclude by showing that the model provides a good fit to data from a previous experiment.
PsychologyCrista Crittenden - Acute Stress Reactivity in Asthma
The relationship between stress and asthma has been explored extensively in both the animal and human literature. Not only is stress associated with asthma morbidity, it is believed to trigger and exacerbate symptoms. It is suggested that stress effects on asthma are due to increased airway inflammation that makes one more susceptible to asthma exacerbating environmental factors. Animal models have shown that stress affects airway inflammation in asthma, but little work has been done to explore this relationship in humans. This study will use a social stress paradigm to explore the effects of stress on airway inflammation.
Dianne Palladino - Health Implications of Relationships among Emerging Adults with and without Diabetes
Objective. The study’s goal was to examine the impact of parent and peer relationships on health behaviors and psychological well-being of those with and without type 1 diabetes over the transition to emerging adulthood. Emerging adulthood is an understudied developmental period and a high risk period—especially for those with type 1 diabetes. Methods. Youth with (n = 117) and without type 1 diabetes (n = 122) completed questionnaires during their senior year of high school and one year later. Measures included supportive and problematic aspects of parent and peer relationships, health behaviors, psychological well-being, and, for those with diabetes, self-care behavior and glycemic control. Results. Prospective multiple and logistic regression analysis revealed that friend conflict was a more potent predictor than friend support of changes in health behaviors and psychological well-being. Parent support was associated with positive changes in psychological well-being and decreases in smoking, whereas parent control was related to increases in smoking and depressive symptoms. There was some evidence of cross-domain buffering such that supportive relationships in one domain buffered adverse effects of problematic relationships in the other domain on health outcomes. Conclusions. This longitudinal study showed that parent relationships remain an important influence on and peer relationships continue to influence the health behaviors and psychological well-being of emerging adults with and without type 1 diabetes. Parent relationships also have the potential to buffer the adverse effects of difficulties with peers.
Matthew Wood - Shared Mental Model Development in Problem Solving Teams
Many of today’s science and engineering problems are solved by teams rather than individuals. Shared understanding of a problem is correlated with team performance. When to promote this understanding in the course of solving is unclear. This study finds that early communication among team members promotes shared understanding and improves team performance on an ill-defined problem solving task.
Rodlescia Sneed - A Prospective Study of Volunteerism and Hypertension Risk Among Older Adults
Epidemiological studies have consistently linked volunteerism to lower mortality among older adults. Here we examine the association between volunteerism and hypertension in a sample of U.S. adults 51 and older. Participants provided data during the 2006 and 2010 waves of the Health and Retirement Study, a longitudinal survey of community-dwelling older adults. Volunteerism and blood pressure were measured at baseline and again four years later. Those who had volunteered at least 200 hours in the 12 months prior to baseline were less likely to develop hypertension than non-volunteers over the follow-up period. There was no association between volunteerism and hypertension risk at lower levels of volunteer participation.
Xiaonan Liu - The Distinct Effect of Emotional Valence and Arousal on Working Memory --- an fMRI Study
Recently, there has been increased interest in how emotional factors such as valence, arousal and stress affect cognition, especially memory. Researchers have found that induced emotional states have different effects on working memory tasks that depend on the valence of the emotion, but the results are sometimes contradictory. This study examines the plausibility of a new hypothesis that emotional arousal plays a different role from valence in the interaction of emotion and working memory. In order to test this idea, we will explore the brain activities of the interaction effect between emotional valence, arousal and working memory.
Social and Decision SciencesDaniel Schwartz - The Hawthorne Effect and Energy Awareness
Often referred to as the ‘Hawthorne Effect’, changes in behavior due to novel treatment or subject knowledge of being in an experiment, is a phenomenon reported as one of the most influential in the social sciences. We conducted a field experiment, examining the Hawthorne Effect in residential energy consumption. Several thousand consumers were notified that they had been selected to participate in a one-month study. This intervention reduced electricity usage, and a follow-up survey suggested that the intervention worked by heightening the salience of energy use.
StatisticsFabrizio Lecci - Prediction of Dementia using Trajectory Models
Alzheimer’s disease is the most frequent form of dementia in the elderly, and age is its most powerful risk factor. The idea is to model the probability of being diagnosed with dementia at different ages, in order to construct trajectories for different categories of people. We try to answer questions such as: what are the factors which cause rapid degeneration? Are there individuals with peculiar trajectories? How can we classify them? Mixed Membership Models constitute the most promising method for this problem. We have adapted the work of Manrique-Vallier (2013) on modeling trajectories toward disability by allowing the data to identify a small number of theoretically appealing “typical” trajectories and then expressing each individual’s trajectory as a weighted combination of these typical trajectories. Mixed Membership Models can be used in many different fields, including text processing, genetics and education (learning trajectories).
Georg Goerg - Automated pattern recognition in fMRI data using optimal nonparametric local forecasts
We present a new nonparametric method, local statistical complexity (LSC), to automatically find activity regions in functional magnetic resonance imaging (fMRI) data - independent of the type of input stimulus. We do this by finding optimal local predictors of the spatio-temporal field, and then use entropy based metrics to assign each fMRI voxel an "interestingness" score - measured in bits of information. Applications to high-resolution fMRI data show that our method detects the same brain regions as traditional analysis methods, without making any assumptions regarding the shape of the unknown neural signal. LSC will be particularly useful for applications where the spatiotemporal patterns of brain activity are highly irregular and non-harmonic and "matched filter'" techniques fail to filter signal from noise.
Lubov Zeifman - Point Spread Function Estimation Using a Circularly Symmetric Basis Set: Application to Cosmology
Furthering the understanding of dark matter is one of the most important problems in modern cosmology. One way to estimate dark matter density is by measuring the shear of galaxies due to dark matter—a very challenging problem not only because galaxies are intrinsically elliptical, but also because of the presence of systematic error, referred to as the Point Spread Function (or PSF), resulting from the data collection process. We propose a new approach of modeling the PSF via circularly symmetric basis functions, demonstrate the advantages of our approach over the leading existing approaches and apply it to data collected by the Hubble space telescope.
H. John Heinz III College
Information Systems & Mgmt: Information SystemsThogori Karago - Inspiring Women in Technology: The Grace Hopper Celebration for Women in Computing
A presentation about the need for and importance of inspiring women in computing. Done through an overview of the Grace Hopper Celebration of Women in computing.
Yiye Zhang - Data-driven Order Set Development in the Pediatric Environment: Toward Safer and More Efficient Patient Care
Physical and cognitive workload imposed on users due to poor usability of healthcare IT can be observed in the use of order sets. We develop an order set optimization platform that allows users to re-design order sets by identifying items for constituting order sets that are relevant based on historical ordering data wherein items for a single patient are often placed together or in close temporal proximity. Evaluation using real patient data indicates that this evidence-based approach improves order set quality and generalizability.
Public Policy & Mgmt: DC TrackNgiste Abebe - Olympic Bid Process: An Engine for Transportation Development
This project uses case studies of Manchester and Istanbul to evaluate the impact of the Olympic bid process on transportation development, ultimately outlining a framework for practitioners to referto when considering to bid for the Olympic Games.
Public Policy & Mgmt: Creative EnterprisesStephanie Garrison - 2012 Americans for the Arts Convention
In June 2012, the national convention for Americans for the Arts took place in San Antonio, TX. The main themes of the convention, timeline, and specifics of sessions will be covered.
Stephanie Garrison - Benchmarking National Craft Education Centers
Working with Touchstone Center for Crafts, a team of 7 Masters of Arts Management students embark on a benchmarking study of 10 national craft education centers. Focus will be on the 4 day trip to visit 3 of these centers where team members gathered information and interviewed staff to be combined with other data collection methods.
Public Policy & Mgmt: Creative Enterprises: MAMAudrey Kwong - The League of American Orchestras - Essentials of Orchestra Management
The League of American Orchestra's Essentials of Orchestra Management seminar was like the majority of the Master of Arts Management program condensed into 10 days with a focus on American orchestras. Over the course of the seminar, we spoke about everything from financial stability to artistic vitality and role played through negotiations and real life issues affecting orchestras today. It was an incredible experience where I was able to interact with others in my field and network with leading industry professionals including Brent Assink of the San Francisco Symphony, Jesse Rosen from the League of American Orchestras, Deborah Borda of the Los Angeles Philharmonic, and Ben Cameron from the Doris Duke Charitable Foundation, to name only a few. While it was difficult to be away from school for so long, it was worth every minute and I would highly recommend it to anyone interested pursuing management in the orchestra field.
Dana Weinstein - National Arts Marketing Project Conference
The National Arts Marketing Project Conference is a three day conference hosted by Americans for the Arts. This conference helps arts organizations develop their marketing so they can meet their financial goals while focusing on the core values of their organization.
Kate Piatt-Eckert - Theatre Communications Group Fall Forum on Governance
Each year Artistic Directors, Executive Directors, and Trustees from not-for-profit theaters from across America gather to discuss issues of leadership and governance. In 2012 this conversation focused on issues of diversity in the workplace, on stage, in season planning, and in a variety of other realms that affect the performing arts.
Sara Ryan - American for the Arts Conference 2012
Review of the 2012 Americans for the Arts Annual Convention, which took place June 8-10th in San Antonio, Texas. The annual convention provides networking and professional development opportunities for art leaders and professionals across the U.S.
Public Policy & Mgmt: Health Care PolicyAlexandra Hansen - American College of Healthcare Executives Congress Experience
The American College of Healthcare Executives Congress on Healthcare Leadership is a premier educational conference for healthcare managers, executives, and students. As a Program Assistant at the Congress, graduate students of healthcare are offered not only participation in student educational programs, but also the unique opportunity to assist in executive-level events. This poster will describe one of the most exciting and informative professional conferences on healthcare through the eyes of a Program Assistant.
Jake Arakal - HIMSS 13
A group of Heinz College students participated in the annual HIMSS Health IT conference in New Orleans in early March. We would like to share many of the events, exhibits and speakers for which we participated and the insights we gained by participating in the conference.
Katelynd McElhany - ACHE Congress on Healthcare Leadership 2013
The American College of Healthcare Executives (ACHE) Congress on Healthcare Leadership was held in Chicago from March 11-14, 2013. This conference offers the opportunity for healthcare students and executives of all levels to come together to share in professional development and networking. With over 140 seminars and events, attendees have the opportunity to learn about cutting edge topics such as patient safety and quality, physician compensation, and policies and regulations. Additionally, several networking and career development events provide the opportunity to connect with other healthcare professionals and build vital relationships necessary for career growth.
Public Policy & Mgmt: Public Policy & Mgmt
Alice McKenney - Just Food Conference
The Just Food Conference in New York City offered opportunities for the general public, food professionals, entrepreneurs, job seekers, CSA members, community organizers and farmers to come together for two days of workshops and skill- building sessions. The conference provided attendees with opportunities to learn about national farm and food issues, CSA trends, and cooking and food preservation techniques, as well as ways to mobilize communities in order to increase access to farm-fresh, locally grown food. PowerPoint presentation includes images and content takeaways from the policy-focused sessions at the conference.
Anna Kasunic - Marijuana Legalization: Lessons from the 2012 State Proposals
On November 6, 2012, citizens in three U.S. states will vote on whether to legalize production, distribution, possession, and sale of marijuana for general—not just medical—use. Legalization is typically imagined as an up or down, binary choice. However, a comparison of 17 legalization proposals actively discussed in various U.S. states in 2012 reveals differences that would have important consequences for price, availability, arrest-risk, use, and, hence, health. This paper divides the proposals into three broad categories and assesses their political feasibility. It then addresses the implications of state-level legalization, and possible federal responses to it, for retail price, tax revenues, and spill-over effects in other states where marijuana would remain illegal.
Bao Le - Comparative and International Education Society Conference 2013
The CIES (Comparative and International Education Society) Conference 2013 took place in New Orleans and provided academics and practitioners of comparative education from around the world with an open forum to discuss the quality of education from a variety of perspectives. Questions debated included: How is quality defined, promoted, monitored, evaluated and researched? What explains the prominence of quality issues in national, regional and global educational landscapes? Is quality education best conceived as the outcomes of schooling?
Carlos Saborio - Gay and Lesbian Leadership Conference
LGBT Leaders 2012 conference brought together hundreds of openly LGBT leaders in government, politics, advocacy, business and community organizations to discuss the issues facing our community.
Channing Martin - Heritage and Horizons: Highlights from the Black Policy Conference
This presentation will focus on the highlights and main takeaways I gathered from the 8th annual Black Policy Conference at Harvard’s Kennedy School. Carnegie Mellon provided me the opportunity to apply the policy analysis tools I was learning here at Pittsburgh and apply them to the black community and African diaspora specifically and uniquely. The panel discussions were focused on innovative thinking and narrowed on education and international affairs to break out sessions with Mayor Warren of Newton, MA and Michael Stautmanis.
Dany Diaz Mejia - Education in South Africa
Education Conference in South Africa examining current trends
Georgina Coolidge - National journal conference
Review of the first annual National Journal Conference for Schools of Public Policy and Affairs
Jessica Varone - Childhood Obesity: Causes & Policy Solutions
The overwhelming prevalence of childhood obesity cannot be ignored, yet seems stubborn to change. In fact, the percentage of children and adolescents aged 2 – 19 who are considered obese has tripled over the past 30 years to 17%. Researchers and social scientists blame this steady increase on innumerable factors within our culture and environment, yet provide no easy solutions. I will present my research on the topic and ideas for cost effective, impactful interventions that can work toward decreasing the obesity prevalence in children.
Kats Sasanuma - Capacity provisioning for a service system with impatient customers
When a supply of affordable parking spaces is in shortage, an excessive number of drivers on a road cruise and search for a vacant spot until they are discouraged and abandon a “queue” for parking. The same phenomena are observed in many fields such as an overloaded call center and a donor bank for kidney transplant. We can model such systems as an M/M/s queue with reneging. However, its solution is complex and less intuitive. To simplify the process of solving a queue with reneging, we develop a new method and apply it to solve the problem in a more intuitive way. We also derive asymptotic results and show a capacity provisioning rule.
Rajiv Garg - LinkedIn and Job Search by Unemployed Individuals
The recent growth of online social networks has enabled job seekers to stay connected with all of their acquaintances, peers, friends, and family. Thus the number of online connections – weak or strong – that an individual is able to manage has increased significantly. In this paper, we first examine if an individual’s social network still plays a role in driving his/her job search behavior not only on the social network but also on other modes. Second, we examine how the ties (weak and strong) and search intensity affect the job outcomes (which we model sequentially as job leads, interviews and offers) from online social networks and compare it to job outcomes from traditional job search modes like career fairs and employment agencies, newspaper and magazine ads, Internet postings, and close friends and family (offline). We found that users with more weak-ties search more and users with more strong-ties search less. We also find that weak-ties are especially helpful in generating job leads, but it is the strong-ties that play an important role in generating job interviews and job offers.
Sandeep Munnangi, Aadam Soorma, Sundus Naeem Siddiqi, Saqib Rasheed - International Development
A presentation about ‘18th International Development Conference’ at Harvard which is co-sponsored by Heinz College – CMU. The presentation also covers the activities of ‘International Development Group (IDG)’ at Heinz College, IDG’s activities in the conference, the case competition sponsored by the IDG in the conference and the key learnings.
Mellon College of Science
Biological SciencesArdon Shorr - Ph.D. Students in Science Policy: very gradual change we can believe in
Scientists and politicians can seem like different species. More accurately, they come from different cultures. We should learn to bridge this cultural gap if we want science to matter in the decisions that affect our shared future. Although graduate students are less expert than established professors, our youth and approachability can act as a great asset. In fact, graduate students are in a unique position to play a larger role in advising science policy.
Daniel Shiwarski - Heterologous Regulation of u-Opioid Receptor Recycling by the Neurokinin-1 Receptor
The mu opioid receptor (MOR) mediates the effects of analgesia induced by endogenous opioids and opioid analgesic drugs. The sensitivity of neurons to these opioids directly correlates with the MORs available on the neuronal surface. In many peripheral sensory and CNS neurons, the MOR is co-expressed with the neurokinin-1 receptor (NK1-R), which is responsible for mediating pain. We investigated whether NK1-R signaling can regulate the rate of post-endocytic recycling of the MOR to the cell surface to alter the rate of resensitization to opioids. NK1-R signaling cross-regulates surface recycling of the MOR through Protein Kinase C (PKC). The target of PKC activity is the MOR itself, as direct phosphorylation of the MOR by PKC was required for this cross-regulation. This suggests a homeostatic physiological mechanism whereby painful stimuli, through phosphorylation of MORs, control the amount of MORs available at the cell surface conferring sensitivity of cells to opioids.
Kiran Rafiq - Expanding the PMC GRN: Genome-Wide Analysis of Ets1 and Alx1 Targets
We use a model morphogenetic process, the formation of the sea urchin embryonic skeleton, as an experimental system to understand how a complex gene regulatory network controls anatomy. We focus on two transcription factors, Ets1 and Alx1, and link them to downstream genes. To provide a comprehensive, genome-wide analysis of the targets of ets1 and alx1, we performed high-throughput cDNA sequencing (RNA-seq) and compare transcript expression under control and ets1/alx1 knockdown conditions. Thus, our works expands the PMC GRN to a great extent and continues to establish linkages between this transcriptional network and the morphogenesis of the skeletal system.
Tanvi Shashikant - Selective Activation of the PMC GRN in Large Micromeres of the Sea Urchin
Gene regulatory networks (GRNs) depict the dynamic interactions between genes that are crucial for development to occur. The sea urchin primary mesenchyme cell (PMC) GRN is one of the most detailed and well-studied GRNs. It is activated selectively in a small cell population of the sea urchin embryo - the large micromeres. In this study, I attempt to understand the molecular mechanisms by which this activation is restricted to the large micromere lineage. This will help us understand the workings of more complex GRNs and elucidate how GRNs work to restrict cell fates.
Zhongling Sun - Expanding the PMC GRN: Genome-Wide Analysis of Ets1 and Alx1 Targets
We use a model morphogenetic process, the formation of the sea urchin embryonic skeleton, as an experimental system to understand how a complex gene regulatory network (GRN) controls the development of a major anatomical feature. We link a GRN deployed in skeletogenic primary mesenchyme cells (PMCs) to genes that control skeletal morphogenesis and uncover transcriptional regulatory inputs into these genes at the early gastrula stage.
ChemistryLea Veras - Computational Studies of the Molecular Mechanisms Responsible for Ca2+ Permeation and Mg2+ Block of NMDA Receptors
Glutamate receptors are membrane proteins activated by the neurotransmitter glutamate that mediate fast synaptic excitation in the mammalian brain. Studies have tested the neuroprotective effect of low affinity NMDA glutamate receptor blockers in ischemic tissues, but so far the clinical trials have failed. The overall mechanism by which the NMDA receptors selects Ca2+ for permeation, while binding Mg2+ and restricting its permeation, are not well understood - a critical knowledge for rational drug design. The general aim of this work is to apply quantitative theoretical approaches to this system by combining methods of computational chemistry, molecular mechanics (MM), and bioinformatics.
Penglin Ye - Secondary Organic Aerosol Production from Pinanediol
We have investigated the production of Secondary Organic Aerosol (SOA) from pinanediol (PD) a precursor chosen as a surrogate for first-generation oxidation products of monoterpenes. Monoterpenes have substantial emissions from vegitation, and when they are oxidized some products have very low vapor pressure and thus contribute to SOA formation. Experiments at the CLOUD facility at CERN are focused on chemistry that can drive formation of new particles in the atmosphere (nucleation), and further oxidation of products such as PD has been proposed as an important contributor to nucleation.
Santosh Kumar - 244th ACS National Meeting
Synthesis of water soluble Au25 cluster with high thermal stability - Metal nanoclusters lie at the boundary between molecular species and nanoparticles and can provide insights into the origins of the optical, electronic and chemical properties of nanomaterials. This work focuses on the synthesis of water-soluble Au25 cluster with high thermal stability. For this purpose the thiol (2S)-1-[(2S)-2-methyl-3-sulfanylpropanoyl] pyrrolidine-2-carboxylic acid (known as Captopril) is used as capping agent. The thermal stability and the chirality of this synthesized cluster have been compared with the previously reported Au25 cluster capped with other thiols. The Au25(Capt)18 exhibits enhanced stability and chiroptical property.
PhysicsMingyang Hu - Determining the Gaussian Curvature Modulus of Lipid Membranes in Simulations
The Gaussian curvature modulus kappa-bar matters for many biological processes that involve topological and/or boundary changes of cell membrane, e.g. endo- and exo-cytosis. However, only sparse experimental measurements of have been reported, and even fewer accurate results obtained via computer simulations exist. Here, we propose a novel approach to determine kappa-bar in silico by monitoring patch-closure processes of pre-curved circular bilayers. Applying this method to two different coarse-grained membrane models, we find results of kappa-bar in line with previous estimates in literature, yet another long-existing method that measures the local membrane stress leads to unphysical Gaussian modulus values.
You-Cyuan Jhang - Applications of the Stochastic LapH Method
Introduction of methodology in computing the hadron spectrum in lattice QCD using stochastic LapH quark propagators is described. Single hadron mass with different momentum will be included as a demonstration.
Tabitha Voytek - Measuring the 21-cm Sky Brightness Temperature Spectrum at High Redshifts
Studying the hydrogen 21-cm signal from the sky allows us to better understand the history of the universe and its structure. Our experiment attempts to measure the 21-cm signal at high redshifts (or early times) using a single antenna system in remote locations.
School of Computer Science
Computer ScienceGunhee Kim - Time-Sensitive Web Image Ranking and Retrieval via Dynamic Multi-Task Regression
In this paper, we investigate a time-sensitive image retrieval problem, in which given a query keyword, a query time point, and optionally user information, we retrieve the most relevant and temporally suitable images from the database. Inspired by recently emerging interests on query dynamics in information retrieval research, our time-sensitive image retrieval algorithm can infer users' implicit search intent better and provide more engaging and diverse search results according to temporal trends of Web user photos. We model observed image streams as instances of multivariate point processes represented by several different descriptors, and develop a regularized multi-task regression framework that automatically selects and learns stochastic parametric models to solve the relations between image occurrence probabilities and various temporal factors that influence them. Using Flickr datasets of more than seven million images of 30 topics, our experimental results show that the proposed algorithm is more successful in time-sensitive image retrieval than other candidate methods, including ranking SVM, a PageRank-based image ranking, and a generative temporal topic model.
Stefan Muller - Towards a Practical Secure Concurrent Language
Concurrent programs are increasingly dominant, but their development poses many challenges. Among these is guaranteeing security of information in a context where the timing of concurrent accesses to shared data can leak sensitive information. However, many modern concurrent languages use concurrency mechanisms which can lend themselves well to security analyses. We extend one such language, X10, with a static analysis that enforces a noninterference-based information security condition. We prove the soundness of this analysis in a lightweight X10-like calculus and then extend this calculus to support most features of X10.
Human-Computer InteractionHarper LaFave - VIEW Conference Experience
A video explaining how to make the most of the VIEW Conference in Turn Italy.
Marwa Muhammad - VIEW Conference
I attended the VIEW conference in Turin, Italy in October 2012. The conference was about Computer Graphics, particularly in the Film and Gaming industry. One talk that stood out to me was by Erminio Pinque who spoke not about computer graphics, but about how to create similar emotions in the audience by one’s physical presence. In my video, I describe my personal experience at that particular talk at the VIEW conference.
Institute for Software ResearchAshwini Rao - Effect of Grammar on Security of Long Passwords
Use of long sentence-like or phrase-like passwords such as “abiggerbetterpassword” and “thecommunistfairy” is increasing. In this paper, we study the role of grammatical structures underlying such passwords in diminishing the security of passwords. We show that the results of the study have direct bearing on the design of secure password policies, and on password crackers used for enforcing password security. We study the effect of grammar on search space and guessing effort. We develop a proof-of-concept grammar-aware cracking algorithm to improve the cracking efficiency of long passwords.
Darya Kurilova - Synthesizing Binary Tree Operations from Specifications
As a part of my undergraduate program at the University of Waterloo, I did a research project equivalent to an undergraduate honours thesis. The project attempted to bridge the gap between program specifications and the implementation. The specific objective of the project was to synthesize method implementations for a binary tree data structure from its specifications. The specification of a method is understood to include not just pre- and post-conditions but also the invariants and abstraction functions of the data structures on which it operates. To generate the code, we applied SAT solver based "sketching" techniques.
Language Technologies InstituteKartik Mandaville - Predictive Modeling with Clinical and Genetic Data
Our software will be trained specifically to analyze the type of whole-genome sequence, which is ideal for clinical applications. We will associate the mutations in the human genome with our predictive model. We are creating a framework that will allow us to tackle this problem one piece at a time and to do so at a scale that makes sense when all of those pieces are put together. Machine learning programs will tease out the relationships between the genomic data and the clinical outcomes for each of the anonymous patients, while incorporating information from biomedical literature regarding gene and protein expression and disease pathways.
Konstantin Salomatin - Auctions and Guaranteed Delivery in Sponsored Search
We present a novel optimization framework for sponsored search. It combines two popular marketing strategies (keyword auctions and guaranteed delivery) and leads to increase in the revenue and the number of clicks.
Siddharth Gopal - Bayesian Models for Large-scale Hierarchical Classification
A challenging problem in hierarchical classification is to leverage the hierarchical relations among classes for improving classification performance. An even greater challenge is to do so in a manner that is computationally feasible for large scale problems. This paper proposes a set of Bayesian methods to model hierarchical dependencies among class labels using multivariate logistic regression. Specifically, the parent-child relationships are modeled by placing a hierarchical prior over the children nodes centered around the parameters of their parents; thereby encouraging classes nearby in the hierarchy to share similar model parameters. We present variational algorithms for tractable posterior inference in these models, and provide a parallel implementation that can comfortably handle large-scale problems with hundreds of thousands of dimensions and tens of thousands of classes. We run a comparative evaluation on multiple large-scale benchmark datasets that highlights the scalability of our approach and shows improved performance over the other state-of-the-art hierarchical methods.
Machine LearningAlona Fyshe - Hierarchical Latent Dictionaries for Models of Brain Activation
In this work, we propose a hierarchical latent dictionary approach to estimate the time-varying mean and covariance of a process for which we have only limited noisy samples. We fully leverage the limited sample size and redundancy in sensor measurements by transferring knowledge through a hierarchy of lower dimensional latent processes. As a case study, we utilize Magnetoencephalography (MEG) recordings of brain activity to identify the word being viewed by a human subject. Specically, we identify the word category for a single noisy MEG recording, when only given limited noisy samples on which to train.
Hai-Son Le - Probabilistic error correction for RNA sequencing
Sequencing of RNAs (RNA-Seq) has revolutionized the field of transcriptomics, but the reads obtained often contain errors. Read error correction can have a large impact on our ability to accurately assemble transcripts. This is especially true for de novo transcriptome analysis, where a reference genome is not available. Current read error correction methods, developed for DNA sequence data, cannot handle the overlapping effects of non-uniform abundance, polymorphisms and alternative splicing. Here we present SEECER, a hidden Markov Model (HMM) based method that is the first to successfully address these problems. SEECER efficiently learns hundreds of thousands of HMMs and uses these to correct sequencing errors. Using human RNA-Seq data we show that SEECER greatly improves upon previous methods in terms of quality of read alignment to the genome and assembly accuracy. To illustrate the usefulness of SEECER for de novo transcriptome studies we generated new RNA-Seq data to study the development of the sea cucumber Parastichopus parvimensis. Our corrected assembled transcripts shed new light on two important stages in sea cucumber development. Comparison of the assembled transcripts to known transcripts in other species has also revealed novel transcripts which are unique to sea cucumber, some of which we have experimentally validated.
RoboticsHeather Jones - Global Localization for Planetary Rovers
Recent missions orbiting and impacting the Moon have discovered evidence for water and other potentially useful resources at the lunar poles. The compelling surface mission with a rover is now to characterize these resources and map their distribution. Carnegie Mellon aims to robotically explore lunar ice in 2015. For scientists to build useful models of resource distribution, robot positions must be precisely known, to within 2m relative to satellite imagery. To this end, a new method for global localization within 2m has been formulated, simulated, and demonstrated on real-world data, and steps have been taken toward implementation on rover hardware.
Tepper School of Business
AccountingChen Li - Mutual Monitoring within Top Management Teams
Mutual monitoring as a solution to moral hazard has been extensively studied by theorists, but the empirical results are few and mixed. This paper non-parametrically identifies and tests three structural models of principal-two-agent moral hazard using the data of S&P1500 firms from 1993 to 2005. The Mutual Monitoring with Individual Utility Maximization Model is the most plausible one to rationalize the data of executive compensation and stock returns. The No Mutual Monitoring Model is also plausible but relies on the assumption that managers have heterogeneous risk preferences across firm characteristics. The Mutual Monitoring with Total Utility Maximization Model is rejected by the data. This paper indicates that shareholders seem to recognize and exploit complementary incentive mechanisms, such as mutual monitoring among self-interested top executives, to design compensation.
Ran Zhao - The Corporate Governance Role of Information Quality and Corporate Takeovers
This paper examines the corporate governance role ofrms' information quality and the takeover market in disciplining management. We consider a model where the takeover market plays a disciplinary role in replacing the inecient incumbent man- ager to increaserm value. Increasing the information quality improves the takeover eciency, but more precise information also discourages the manager from working hard. Wend that current shareholders prefer a higher information quality level than the one that maximizesrm value. This is because the current shareholders may ob- tain an overbidding premium by increasing the information quality to induce a higher likelihood of receiving a high-price bid for a low-valuerm. We also analyze the eect of antitakeover laws or provisions. Wend that the optimal information quality is higher after the adoption of antitakeover law or antitakeover provisions. Moreover, the adoption of antitakeover laws always increases therm value, but increases the current shareholders' payo only when the manager's private ben t is large and the value enhancement from takeover is small.
Business AdministrationJulianne Harty - Game Development Conference
Key takeaways learned at the Game Development Conference, specifically towards Mobile and Free-to-Play (F2P) games
Uttam Mukherjee - Wake Forest Marketing Summit Case Competition
The paper will describe our preparation for the case competition, how to be successful and any other advise we can provide.
Information SystemsZia Hydari - Is Patient Data Better Protected in Competitive Healthcare Markets?
We study the effect of hospital market concentration on the quality of patient data protection practices. We use approximately 200 reported data breaches in US hospitals over the period 2006 - 2011 as a measure of the quality of patient data protection practices. We measure market concentration using the Herfindahl-Hirschman Index (HHI) and estimate our models by exploiting cross-sectional HHI variation. Surprisingly, we find that increased competition is associated with a decline in the quality of patient data protection. Our main result indicates that a 100 point increase in HHI is associated with a 5% decline in the average count of data breach incidents. The results are directionally robust to a number of alternate model specifications. To explain our findings, we posit that hospitals in more competitive markets may be inclined to shift resources to more consumer visible activities from the less consumer visible activity of data protection.
MarketingYang Yang - Love it Longer: Sentimental Value Slows Hedonic Adaptation
A series of studies demonstrate that consumers adapt more slowly to products that have sentimental value to them as compare to products that do not. This occurs because thinking about sentimentally laden products leads to thoughts of the source of the products more than features of the products.
Operations Management & ManufacturingXin Fang - Stability and Endogenous Formation of Inventory Transshipment Networks
This paper studies a game of inventory transshipment based on networks of multiple firms. The firms first make their inventory decisions independently under uncertain demands, and then decide collectively how to transship excess inventories to satisfy unmet demands. Using the theory of economic and social networks, we examine the stability of various network structures, and then establish equilibrium network structures when the firms form networks endogenously.
Operations Management of Manufacturing & AutomationTinglong Dai - Contracting for On-Time Delivery in the US Influenza Vaccine Supply Chain
Motivated by the flu vaccine industry, we consider a supply chain that involves three sources of uncertainties: design, delivery, and demand. In such a supply chain it is critical for the firms to choose the right production quantity at the right time. It is shown that several well-known contracts fail to coordinate the supply chain. So we propose new coordinating contracts that are reported in practice but not studied in the extant literature.
Organizational Behavior & TheoryAmanda Weirup - Favors Feel Different for Females: Gender Differences in Favor Deliberation
Our research examines gender differences in how individuals make decisions regarding whether to perform favors, which we define as voluntary, explicit requests that represent prosocial behavior. We provide evidence that women consider different reasons for performing favors, such as being more likely to complying with norms or authority, and experience higher levels of negative emotions, such as anger, fatigue, fear, and guilt, while men experience higher levels of calm. Furthermore, the reasons individuals consider during favor deliberation correlate highly with their emotional experience during the process.
Jin Wook Chang - An Aversion to Dominance: The Effect of Newcomer Behavioral Style on Status Conferral
In this research, we suggest that the benefits associated with dominance are reduced when the individuals making status conferral decisions are concerned about their standing within the group. One group decision that triggers this concern is when groups are considering the entry of newcomers. In three studies, we provide evidence that 1) decisions about newcomer entry triggers greater concerns about potential status loss than decisions about insider promotion, and 2) group members respond to concerns about potential status loss by reducing their willingness to confer status upon dominant potential newcomers.
Entertainment Technology CenterYibo Xing - A third-person controller in Unity
This is a demo of a third person controller implemented in Unity. It provides an intuitive control of the character and avoids some of the common camera angle issues in video game we play nowadays.