BikeGesture: User Elicitation and Performance of Micro Hand Gesture as Input for Cycling

BikeGesture: User Elicitation and Performance of Micro Hand Gesture as Input for Cycling

Yanke Tan, Sang Ho Yoon, Karthik Ramani
In Proceedings of the 2017 CHI Conference Extended Abstracts on Human Factors in Computing Systems (CHI EA' 17: 2147-2154), Denver, CO, May 6-11, 2017

Abstract: The use of hand gestures has a potential as a promising input metaphor. Wearables like smart textile and data gloves can provide hand gesture recognition to potentially replace, augment or improve existing input methods. Although recent...

VizScribe: A visual analytics approach to understand designer behavior

VizScribe: A visual analytics approach to understand designer behavior

Chandrasegaran, S., Badam, S. K., Kisselburgh, L., Peppler, K., Elmqvist, N., and Ramani, K.
International Journal of Human-Computer Studies, 100, April 2017, pp. 66 -- 80.

Design protocol analysis is a technique to understand designers’ cognitive processes by analyzing sequences of observations on their behavior. These observations typically use audio, video, and transcript data in order to gain insights into the...

Modeling Cumulative Arm Fatigue in Mid-Air Interaction based on Perceived Exertion and Kinetics of Arm Motion

Modeling Cumulative Arm Fatigue in Mid-Air Interaction based on Perceived Exertion and Kinetics of Arm Motion

Sujin Jang, Wolfgang Stuerzlinger, Satyajit Ambike, Karthik Ramani
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI 2017: 3328-3339), Denver, CO, May 6-11, 2017 (Acceptance Rate: 25%)

Quantifying cumulative arm muscle fatigue is a critical factor in understanding, evaluating, and optimizing user experience during prolonged mid-air interaction. A reasonably accurate estimation of fatigue requires an estimate of an individual's...

WireFab: Mix-Dimensional Modeling and Fabrication for 3D Mesh Models

WireFab: Mix-Dimensional Modeling and Fabrication for 3D Mesh Models

Min Liu, Yunbo Zhang, Jing Bai, Yuanzhi Cao, Jeffrey Alperovich, Karthik Ramani
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI 2017: 965-976), Denver, CO, May 6-11, 2017 (Acceptance Rate: 25%)

We propose WireFab, a rapid modeling and prototyping system that uses bent metal wires as the structure framework. WireFab approximates both the skeletal articulation and the skin appearance of the corresponding virtual skin meshes, and it allows...

Window-Shaping: 3D Design Ideation by Creating on, Borrowing from, and Looking at the Physical World

Window-Shaping: 3D Design Ideation by Creating on, Borrowing from, and Looking at the Physical World

Ke Huo, Vinayak, Karthik Ramani
In Proceedings of the TEI'17: Tenth International Conference on Tangible, Embedded, and Embodied Interaction. ACM. (TEI'17: 37-45) , Yokohama, Japan, Mar., 2017

We present, Window-Shaping, a tangible mixed-reality (MR) interaction metaphor for design ideation that allows for the direct creation of 3D shapes on and around physical objects. Using the sketch-and-inflate scheme, our metaphor enables quick...

Co-3Deator: A Team-First Collaborative 3D Design Ideation Tool

Co-3Deator: A Team-First Collaborative 3D Design Ideation Tool

Cecil Piya, Vinayak, Senthil Chandrasegaran, Niklas Elmqvist, Karthik Ramani
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI 2017: 6581-6592), Denver, CO, May 6-11, 2017 (Acceptance Rate: 25%)

We present Co-3Deator, a sketch-based collaborative 3D modeling system based on the notion of "team-first" ideation tools, where the needs and processes of the entire design team come before that of an individual designer. Co-3Deator includes two...

Deconvolving Feedback Loops in Recommender Systems

Deconvolving Feedback Loops in Recommender Systems

Ayan Sinha, David F. Gleich, Karthik Ramani
In Proceedings of the Thirtieth Annual Conference on Neural Information Processing Systems (NIPS'16) , Barcelona, Spain, 2016

Collaborative filtering is a popular technique to infer users' preferences on new content based on the collective information of all users preferences. Recommender systems then use this information to make personalized suggestions to users. When...

Window-Shaping: 3D Design Ideation by Creating on, Borrowing from, and Looking at the Physical World

Window-Shaping: 3D Design Ideation in Mixed Reality

Ke Huo, Vinayak, Karthik Ramani
In Proceedings of the 2016 Symposium on Spatial User Interaction, Tokyo, Japan, 2016 Oct.

We present, Window-Shaping, a mobile, markerless, mixed-reality (MR) interface for creative design ideation that allows for the direct creation of 3D shapes on and around physical objects. Using the sketch-and-inflate scheme, we present a design...

TRing: Instant and Customizable Interactions with Objects Using an Embedded Magnet and a Finger-Worn Device

TRing: Instant and Customizable Interactions with Objects Using an Embedded Magnet and a Finger-Worn Device

Sang Ho Yoon, Yunbo Zhang, Ke Huo, Karthik Ramani
In Proceedings of the 29th Annual ACM Symposium on User Interface Software & Technology (UIST'16) , Tokyo, Japan, 2016 (Acceptance Rate: 20.6%)

We present TRing, a finger-worn input device which provides instant and customizable interactions. TRing offers a novel method for making plain objects interactive using an embedded magnet and a finger-worn device. With a particle filter integrated...

Developing Middle School Students’ Engineering Design Concepts through Toy Design Workshop

Developing Middle School Students’ Engineering Design Concepts through Toy Design Workshop

Ninger Zhou, Tarun Thomas George, Joran W. Booth, Jeffrey Alperovich, Senthil Chandrasegaran, Nielsen L. Pereira, Jeffrey David Tew, Devadatta M. Kulkarni, Karthik Ramani
ASEE 123rd Annual, New Orleans, LA, June 26-29, 2016

In this study, we structured a toy design workshop to provide hands on and engaging design activities for middle school students, to help them develop self-efficacy beliefs in design, model and scaffold engineering design mindsets, and apply design...

Deep Learning 3D Shape Surfaces using Geometry Images

Deep Learning 3D Shape Surfaces using Geometry Images

Ayan SInha, Jing Bai, Karthik Ramani
The 14th European Conference on Computer Vision, October 11-14, 2016, Amsterdam, The Netherlands.

Surfaces serve as a natural parametrization to 3D shapes. Learning surfaces using convolutional neural networks (CNNs) is a challenging task. Current paradigms to tackle this challenge are to either adapt the convolutional filters to operate on...

shapeSIFT: Evaluating InfoVis Tools for Eco-Conscious Design

shapeSIFT: Evaluating InfoVis Tools for Eco-Conscious Design

Ramanujan D, Bernstein WZ, Kulkarni D, Tew J, & Ramani K
In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (pp. V004T05A041-V004T05A041). American Society of Mechanical Engineers.

In this paper, we present the methodology and results from the evaluation of shapeSIFT: a multi-dimensional visualization tool for exploring part repositories in the context of eco-conscious design. The goals of this work are twofold, to create a...

FEAsy: A Sketch-Based Tool for Finite Element Analysis

FEAsy: A Sketch-Based Tool for Finite Element Analysis

Sundar Murugappan, Cecil Piya, Maria C. Yang, Karthik Ramani
Journal of Computing and Information Science in Engineering, Volume 16, Issue 3, September 2016

Freehand sketching is an integral part of early design process. Recent years have seen an increased interest in supporting sketching in computer-based design systems. In this paper, we present finite element analysis made easy (FEAsy), a...

The intrinsic geometric structure of protein-protein interaction networks for protein interaction prediction

The intrinsic geometric structure of protein-protein interaction networks for protein interaction prediction

Yi Fang, Mengtian Sun, Guoxian Dai, and Karthik Ramani
IEEE/ACM Transactions on Computational Biology and Bioinformatics (TCBB) TCBB Homepage archive Volume 13 Issue 1, January/February 2016 Pages 76-85

Recent developments in high-throughput technologies for measuring protein-protein interaction (PPI) have profoundly advanced our ability to systematically infer protein function and regulation. However, inherently high false positive and false...

Proto-TAI++: Exploring Perceptually Consistent Creation of Planar Shape Assemblies Through Multimodal Tangible Interactions

Proto-TAI++: Exploring Perceptually Consistent Creation of Planar Shape Assemblies Through Multimodal Tangible Interactions

Cecil Piya, Vinayak, Karthik Ramani
Journal of Computing and Information Science in Engineering, Volume 16, Issue 3, September 2016

We explore tangible 3D interactions that allow for geometric and perceptual correspondence between a midair modality and the 3D elements it controls. To demonstrate our approach, we use a concrete application scenario through Proto-TAI++, a...

DeepHand: Robust Hand Pose Estimation by Completing a Matrix Imputed with Deep Features

DeepHand: Robust Hand Pose Estimation by Completing a Matrix Imputed with Deep Features

Ayan Sinha*, Chiho Choi*, and Karthik Ramani (* denotes equal contribution)
In Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2016, Las Vegas, USA.

We propose DeepHand to estimate the 3D pose of a hand using depth data from commercial 3D sensors. We discriminatively train convolutional neural networks to output a low dimensional activation feature given a depth map. This activation feature...

The Design For Additive Manufacturing Worksheet

The Design For Additive Manufacturing Worksheet

Joran W. Booth, Jeffery Alperovich, Tahira N. Reid, Karthik Ramani
Proceedings of the ASME 2016 International Design Engineering Technical Conferences &Computers and Information in Engineering ConferenceIDETC/CIE 2016August 21-24, 2016, Charlotte, North Carolina, USA

Abstract: Additive manufacturing (AM) technologies have become integral to the modern manufacturing process. These roles are filled both in prototyping and production. Many studies have been conducted and lists been written on guidelines for AM....

CardBoardiZer: Creatively Customize, Articulate and Fold 3D Mesh Models

CardBoardiZer: Creatively Customize, Articulate and Fold 3D Mesh Models

Yunbo Zhang,Wei Gao, Luis Paredes, Karthik Ramani
Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems (pp. 897-907). ACM.

                https://youtu.be/Rnt3OCUTlZs Computer-aided design of flat patterns allows designers to prototype foldable 3D objects made of heterogeneous sheets of material. We found origami designs are...

Optimal Fitting of Strain-Controlled Flattenable Mesh Surfaces

Optimal Fitting of Strain-Controlled Flattenable Mesh Surfaces

Yunbo Zhang, Charlie C. L. Wang, Karthik Ramani
The International Journal of Advanced Manufacturing Technology, 1-15.

A flattenable mesh surface is a polygonal mesh surface that can be unfolded into a planar patch without stretching any polygon. This paper presents a new method for computing a slightly stretched flattenable mesh surface M from a piecewise-linear...

Cubimorph: Designing Modular Handheld Shape Changing Devices for End-Users

Cubimorph: Designing Modular Handheld Shape Changing Devices for End-Users

Roudaut, Anne and Krusteva, Diana and Karnik, Abhijit Anil and McCoy, Mike and Ramani, Karthik and Subramanian, Sriram
The International Conference on Robotics and Automation (ICRA) 2016, Stockholm, Sweden.

We introduce Cubimorph, a modular interactive device that accommodates touchscreens on each of the six module faces, and that uses a hinge-mounted turntable mechanism to self-reconfigure in the user's hand. Cubimorph contributes toward the vision...

TMotion: Embedded 3D Mobile Input using Magnetic Sensing Technique

TMotion: Embedded 3D Mobile Input using Magnetic Sensing Technique

Sang Ho Yoon, Ke Huo, Karthik Ramani
In Proceedings of the 10th International Conference on Tangible, Embedded, and Embodied Interaction (TEI'16), Eindhoven, Netherlands, 2016 (Acceptance Rate: 27%)

Abstract: We present TMotion, a self-contained 3D input that enables spatial interactions around mobile device using a magnetic sensing technique. We embed a permanent magnet and an inertial measurement unit (IMU) in a stylus. When the stylus moves...

MobiSweep: Exploring Spatial Design Ideation Using a Smartphone as a Hand-held Reference Plane

MobiSweep: Exploring Spatial Design Ideation Using a Smartphone as a Hand-held Reference Plane

Vinayak, Devarajan Ramanujan, Cecil Piya, Karthik Ramani
In Proceedings of the Tenth International Conference on Tangible, Embedded, and Embodied Interaction, Netherlands, 2016

In this paper, we explore quick 3D shape composition during early-phase spatial design ideation. Our approach is to re-purpose a smartphone as a hand-held reference plane for creating, modifying, and manipulating 3D sweep surfaces. We implemented...

RevoMaker: Enabling Multi-directional and Functionally-embedded 3D Printing using a Rotational Cuboidal Platform

RevoMaker: Enabling Multi-directional and Functionally-embedded 3D Printing using a Rotational Cuboidal Platform

Wei Gao, Yunbo Zhang, Diogo C. Nazzetta, Karthik Ramani, Raymond J. Cipra
In Proceedings of ACM Symposium on User Interface Software and Technology, (UIST '15), Charlotte, NC, USA

In recent years, 3D printing has gained significant attention from the maker community, academia, and industry to support low-cost and iterative prototyping of designs. Current unidirectional extrusion systems require printing sacrificial material...

Extracting Hand Grasp & Motion for Intent Expression in Mid-Air Shape Deformation: A Concrete & Iterative Exploration through a Virtual Pottery Application

Extracting Hand Grasp & Motion for Intent Expression in Mid-Air Shape Deformation: A Concrete & Iterative Exploration through a Virtual Pottery Application

Vinayak and Karthik Ramani
Computers & Graphics, Volume 55, April 2016, Pages 143-156, ISSN 0097-8493, (http://dx.doi.org/10.1016/j.cag.2015.10.012.)

We describe the iterative design and evaluation of a geometric interaction technique for bare-hand mid-air virtual pottery. We model the shaping of a pot as a gradual and progressive convergence of the pot-profile to the shape of the user's hand...

A Collaborative Filtering Approach to Real-Time Hand Pose Estimation

A Collaborative Filtering Approach to Real-Time Hand Pose Estimation

Chiho Choi, Ayan Sinha, Joon Hee Choi, Sujin Jang, and Karthik Ramani
In Proc. IEEE International Conference on Computer Vision (ICCV) 2015, Santiago, Chile.

Collaborative filtering aims to predict unknown user ratings in a recommender system by collectively assessing known user preferences. In this paper, we first draw analogies between collaborative filtering and the pose estimation problem....

Bridging The Gaps: Augmenting Design Learning Through Computer-Aided Exploration

Bridging The Gaps: Augmenting Design Learning Through Computer-Aided Exploration

Anirudh Roshan Sriram, DeLean Tolbert , Monica Cardella , Karthik Ramani
Proceedings of the ASME 2015 International Design Engineering Technical Conferences & International Conference on Design Education, IDETC/DEC 2015, August 30-September 2, 2015, Boston, USA

ABSTRACT In helping students learn engineering design, it is very important that they explore complex scenarios that are realistic, and fall outside the domain of standard and over-simplified textbook problems that typically have an answer. A...

Empirical Studies of Functional Decomposition in Early Design

Empirical Studies of Functional Decomposition in Early Design

Joran W. Booth, Ahbinav Bhasin, Tahira Reid, and Karthik Ramani
Proceedings of the ASME 2015 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, IDETC/CIE 2015 August 2-5, 2015, Boston, Massachusetts, USA

This paper explores functional decomposition in early design. In the first part of this study, we explore how the three most common methods (top-down, energy-flow, enumeration) affect concept generation for novice design teams (n=25). We found that...

Comparing Functional Analysis Methods for Product Dissection Tasks

Comparing Functional Analysis Methods for Product Dissection Tasks

Joran W. Booth, Tahira N. Reid, Claudia Eckert, Karthik Ramani
Journal of Mechanical Design J. Mech. Des 137(8), 081101 (Aug 01, 2015) (10 pages) doi: 10.1115/1.4030232

The purpose of this study is to begin to explore which function identification methods work best for specific tasks. We use a three-level within-subject study (n ¼ 78) to compare three strategies for identifying functions: energy-flow, top-down,...

MotionFlow: Visual Abstraction and Aggregation of Sequential Patterns in Human Motion Tracking Data

MotionFlow: Visual Abstraction and Aggregation of Sequential Patterns in Human Motion Tracking Data

Sujin Jang, Niklas Elmqvist, and Karthik Ramani
IEEE Transaction on Visualization and Computer Graphics (TVCG) vol.22, no.1, pp.21-30, Jan. 31, 2016 / IEEE Conference on Visual Analytics Science and Technology (VAST) Oct. 25-30, Chicago, IL, 2015. In print.

Pattern analysis of human motions, which is useful in many research areas, requires understanding and comparison of different styles of motion patterns. However, working with human motion tracking data to support such analysis poses great...

A framework for visualization-driven eco-conscious design exploration

A framework for visualization-driven eco-conscious design exploration

Devarajan Ramanujan, William Z. Bernstein, William Benjamin, Karthik Ramani, Niklas Elmqvist, Devadatta Kulkarni, Jeffrey Tew
Journal of Computing and Information Science in Engineering. 2015 Dec 1;15(4):041010.

A large portion of design activity involves applying previous design knowledge in order to solve new problems. Therefore, facilitating eco-conscious exploration of archived designs is needed for advancing sustainable product design. It is thus...

Mutually coordinated visualization of product and supply chain metadata for sustainable design

Mutually coordinated visualization of product and supply chain metadata for sustainable design

William Z. Bernstein, Devarajan Ramanujan, Devadatta Kulkarni, Jeffrey Tew, Niklas Elmqvist, Fu Zhao, Karthik Ramani
Journal of Mechanical Design. 2015 Dec 1;137(12):121101.

In this paper, we present a novel visualization framework for product and supply chain metadata in the context of redesign-related decision scenarios. Our framework is based on the idea of overlaying product-related metadata onto the interactive...

HandiMate: Exploring a Modular Robotics kit for Animating Crafted Toys

HandiMate: Exploring a Modular Robotics kit for Animating Crafted Toys

Sang Ho Yoon , Ansh Verma , Kylie Peppler, Karthik Ramani
In Proceedings of the 14th International Conference on Interaction Design & Children (IDC'15), Tufts University, USA, 2015

Building from our previous work we explore HandiMate, a robotics kit which enables users to construct and animate their toys using everyday craft materials [32]. The kit contains eight joint modules, a tablet interface and a glove controller....

The Status, Challenges, and Future of Additive Manufacturing in Engineering

The Status, Challenges, and Future of Additive Manufacturing in Engineering

Wei Gao, Yunbo Zhang, Devarajan Ramanujan, Karthik Ramani, Yong Chen, Christopher B. Williams, Charlie C.L. Wang, Yung C. Shin, Song Zhang, Pablo D. Zavattieri
Computer-Aided Design, doi:10.1016/j.cad.2015.04.001

Additive manufacturing (AM) is poised to bring about a revolution in the way products are designed, manufactured, and distributed to end users. This technology has gained significant academic as well as industry interest due to its ability to...

Hand Grasp and Motion for Intent Expression in Mid-Air Virtual Pottery

Hand Grasp and Motion for Intent Expression in Mid-Air Virtual Pottery

Vinayak and Karthik Ramani
In Proceedings of Graphics Interface 2015 (GI '15). Canadian Information Processing Society, Toronto, Ont., Canada, Canada

We describe the design and evaluation of a geometric interaction technique for bare-hand mid-air virtual pottery. We model the shaping of a pot as a gradual and progressive convergence of the pot-profile to the shape of the user's hand represented...

A Gesture-free Geometric Approach for Mid-Air Expression of Design Intent

A Gesture-free Geometric Approach for Mid-Air Expression of Design Intent

Vinayak and Karthik Ramani
Computer-Aided Design (Elsevier), Available online 17 July 2015, ISSN 0010-4485, http://dx.doi.org/10.1016/j.cad.2015.06.006.

Abstract: The advent of depth cameras has enabled mid-air interactions for shape modeling with bare hands. Typically, these interactions employ a finite set of pre-defined hand gestures to allow users to specify modeling operations in virtual...

Sketcholution: Interaction Histories for Sketching

Sketcholution: Interaction Histories for Sketching

Zhenpeng Zhao, William Benjamin, Niklas Elmqvist, Karthik Ramani
International Journal of Human-Computer Studies, 82 (2015) 11-20

We present Sketcholution, a method for automatically creating visual histories of hand-drawn sketches. Such visual histories are useful for a designer to reflect on a sketch, communicate ideas to others, and fork from or revert to an earlier point...

Informing Early Design Via Crowd-based Co-creation

Informing Early Design Via Crowd-based Co-creation

Devarajan Ramanujan, Vinayak, Yash Nawal, Tahira Reid, Karthik Ramani
In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (pp. V007T06A043-V007T06A043). American Society of Mechanical Engineers.

Customer inputs in the early stages of design can potentially lead to completely new outlooks in concept generation. We propose crowd-based co-creation as a means to this end. Our main idea is to think of the customer as a source of initial design...

HandiMate: Create and Animate using everyday objects

HandiMate: Create and Animate using everyday objects

Jasjeet Singh Seehra, Ansh Verma, Kylie Peppler, Karhik Ramani
Proceedings of the ACM Conference on Tangible Embedded and Embodied Interactions, Stanford University, January 15-19, 2015

The combination of technological progress and a growing interest in design has promoted the prevalence of DIY (Do It Yourself) and craft activities. In a similar spirit, we introduce HandiMate, a platform that makes it easier to fabricate and...

Heat-Passing Framework for Robust Interpretation of Data in Networks

Heat-Passing Framework for Robust Interpretation of Data in Networks

Yi Fang, Mengtian Sun, Karthik Ramani
PLoS ONE 10(2), doi:10.1371/journal.pone.0116121, 2015

Researchers are regularly interested in interpreting the multipartite structure of data entities according to their functional relationships. Data is often heterogeneous with intricately hidden inner structure. With limited prior knowledge,...

TIMMi: Finger-worn Textile Input Device with Multimodal Sensing in Mobile Interaction

TIMMi: Finger-worn Textile Input Device with Multimodal Sensing in Mobile Interaction

Sang Ho Yoon, Vinh Nguyen, Ke Huo, Karthik Ramani
In Proceedings of the 9th International Conference on Tangible, Embedded, and Embodied Interaction (TEI'15), Stanford University, USA, 2015

Abstract: We introduce TIMMi, a textile input device for mobile interactions. TIMMi is worn on the index finger to provide a multimodal sensing input metaphor. The prototype is fabricated on a single layer of textile where the conductive silicone...

SOFTii: Soft Tangible Interface for Continuous Control of Virtual Objects with Pressure-based Input

SOFTii: Soft Tangible Interface for Continuous Control of Virtual Objects with Pressure-based Input

Vinh Nguyen, Pramod Kumar, Sang Ho Yoon, Ansh Verma, Karthik Ramani
Proceedings of the 9th International Conference on Tangible, Embedded, and Embodied Interaction, Jan 15-19, Stanford University, USA. pp 539-544, 2015

We present SOFTii, a flexible input system for topography design and continuous control via external force. Our intent is to provide a tactile metaphor for pressure-based surface input. In this study, two prototypes of SOFTii have been fabricated:...

GestureAnalyzer: Visual Analytics for Pattern Analysis of  Mid-Air Hand Gestures

GestureAnalyzer: Visual Analytics for Pattern Analysis of Mid-Air Hand Gestures

Sujin Jang, Niklas Elmqvist, Karthik Ramani
Proceedings of the ACM Symposium on Spatial User Interaction, October 4-5, 2014, Honolulu, HI, USA

Understanding the intent behind human gestures is a critical problem in the design of gestural interactions. A common method to observe and understand how users express gestures is to use elicitation studies. However, these studies requires...

Plex: Finger-Worn Textile Sensor for Mobile Interaction during Activities

Plex: Finger-Worn Textile Sensor for Mobile Interaction during Activities

Sang Ho Yoon, Ke Huo, Karthik Ramani
In Proceedings of the International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct Publication (Ubicomp'14 Adjunct), Seattle, USA, 2014.

Abstract: We present Plex, a finger-worn textile sensor for eyes-free mobile interaction during daily activities. Although existing products like a data glove possess multiple sensing capabilities, they are not designed for environments where body...

BendID: Flexible Interface for Localized Deformation Recognition

BendID: Flexible Interface for Localized Deformation Recognition

Vinh Nguyen, Sang Ho Yoon, Ansh Verma, Karthik Ramani
Proceedings of the ACM international Joint Conference on Pervasive and Ubiquitous Computing, Sep 13-17, Seattle, USA. pp 553-557, 2014

We present BendID, a bendable input device that recognizes the location, magnitude and direction of its deformation. We use BendID to provide users with a tactile metaphor for pressure based input. The device is constructed by layering an array of...

Art Meets Engineering Design: An Approach for Reducing Sketch Inhibition in Engineers During the Design Process

Art Meets Engineering Design: An Approach for Reducing Sketch Inhibition in Engineers During the Design Process

Joran W. Booth, Abhinav K. Bhasin, and Karthik Ramani
In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (pp. V003T04A013-V003T04A013). American Society of Mechanical Engineers.

While much prior work has been done regarding sketching and its impact on design and a few on how to train engineers to sketch, there have been no prior studies in engineering to reduce inhibition to frequent sketching. This paper describes a...

Evaluating the Bottom-Up Method for Functional Decomposition in Product Dissection Tasks

Evaluating the Bottom-Up Method for Functional Decomposition in Product Dissection Tasks

Joran W. Booth, Abhinav K. Bhasin, Tahira Reid, Karthik Ramani
In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (pp. V003T04A009-V003T04A009). American Society of Mechanical Engineers.

The purpose of this study is to continue to explore which function identification methods work best for specific design tasks. Prior literature describes the top-down and bottom-up approaches as equivalent methods for functional decomposition....

Prioritizing Design for Environment Strategies Using a Stochastic Analytic Hierarchy Process

Prioritizing Design for Environment Strategies Using a Stochastic Analytic Hierarchy Process

Devarajan Ramanujan, William Z. Bernstein, Mikko Koho, Fu Zhao, Karthik Ramani
Journal of Mechanical Design, 136(7), 071002

This paper describes a framework for applying design for environment (DfE) within an industry setting. Our aim is to couple implicit design knowledge such as redesign/process constraints with quantitative measures of environmental performance to...