Photo of Josiah Hester

Josiah Hester

Ph.D. Candidate

    I am a PhD Candidate working at the software hardware boundary, trying to make sophisticated batteryless sensing a reality. I work in the PERSIST Lab with Jacob Sorber at Clemson University.

 CPSC 4820/6820

Fall 2015 I taught Embedded Systems Prototyping; a new course on hardware hacking I designed with Jacob Sorber. Look for it again in Fall 2016!

I am currently on the academic job market.

Research Statement (PDF | HTML), Teaching Statement (PDF | HTML), Curriculum Vitae (PDF)



News

(09/2016) Attended the amazing NextProf Workshop at University of Michigan.

(07/2016) Amulet paper accepted to ACM SenSys 2016.

(06/2016) I am serving as Publicity Chair, and on the TPC for ENSsys 2016. Submit your work!

(02/2016) I received the Outstanding CS PhD Student Award from the School of Computing .

(11/2015) We won Best Poster at ACM SenSys 2015

(07/2015) Federated Energy paper accepted to ACM SenSys 2015

(11/2014) Ekho paper won Best Paper award at ACM SenSys 2014.

(09/2014) Ekho paper accepted to ACM SenSys 2014.

(06/2013) We won Best Poster at IEEE SECON 2013.

Education

Ph.D. in Computer Science

School of Computing, Clemson University 2012 - Present

B.S. in Computer Science

Calhoun Honors College, Clemson University 2008 - 2011

Publications

Refereed Conference and Workshop Papers

Amulet: An Energy-Efficient, Multi-Application Wearable Platform

14th ACM Conference on Embedded Networked Sensor Systems (SenSys'2016) Stanford, CA, USA, 2016

Josiah Hester, Travis Peters, Tianlong Yun, Ron Peterson, Joseph Skinner,
Barghav Golla, Kevin Storer, Steven Hearndon, Kevin Freeman,
Sarah Lord, Ryan Halter, David Kotz, Jacob Sorber [Project]

Realistic Simulation for Tiny Batteryless Sensors

4th Workshop on Energy Harvesting and Energy-Neutral Sensing Systems (ENSsys'2016) Stanford, CA, USA, 2016

Matt Furlong, Josiah Hester, Kevin Storer, Jacob Sorber

Towards A Language and Runtime for Intermittently Powered Devices

1st Workshop on Hilariously Low-Power Computing (HLPC'2016) Atlanta, GA, USA, 2016

Josiah Hester, Kevin Storer, Lanny Sitanayah, Jacob Sorber

Tragedy of the Coulombs: Federating Energy Storage for Tiny, Intermittently-Powered Sensors

13th ACM Conference on Embedded Networked Sensor Systems (SenSys'2015) Seoul, South Korea, 2015

Josiah Hester, Lanny Sitanayah, Jacob Sorber [Paper][Presentation]

Ekho: Realistic and Repeatable Experimentation for Tiny Energy-Harvesting Sensors *(BEST PAPER)

12th ACM Conference on Embedded Networked Sensor Systems (SenSys'2014) Memphis, TN, USA, 2014

Josiah Hester, Timothy Scott, Jacob Sorber [Project][Paper][Presentation][Notes]

Refereed Journal Publications

Shoulder Angel: An Open Platform for Reprogramming Wayward Wireless Sensors

IEEE Embedded Systems Letters (Accepted for Publication) 2016

N. Tobias, C. Bolton, J. Hester, L. Sitanayah, J. Sorber

Persistent Clocks for Batteryless Sensing Devices

ACM Transactions on Embedded Computing Systems, 15, 4, Article 77 (August 2016) 2016

J. Hester, N. Tobias, A. Rahmati, L. Sitanayah, D. Holcomb, K. Fu, W. P. Burleson, J. Sorber [Paper]

uRespond: iPad as Interactive, Personal Response System

Journal of Chemical Education 2014 91 (3), 357-363 2014

S. Bryfczynski, R. Brown, J. Hester, A. Herrmann, D. Koch, M. Cooper, N. Grove [Link]

Book Chapters

Classroom Uses for BeSocratic

The Impact of Pen and Touch Technology on Education, Springer, 2015, 127-136 2015

S. Bryfczynski, R. Brown, J. Hester, A. Herrmann, D. Koch, M. Cooper, N. Grove [Link][Conference Version]

Other Refereed Publications

Demo: The Amulet Wearable Platform

14th ACM Conference on Embedded Networked Sensor Systems (SenSys'2016) Stanford, CA, USA, 2016

Josiah Hester, Travis Peters, Tianlong Yun, Ron Peterson, Joseph Skinner,
Barghav Golla, Kevin Storer, Steven Hearndon,
Sarah Lord, Ryan Halter, David Kotz, Jacob Sorber [Project]

Doctoral Colloquium: Sophisticated Sensing on Transient Power

13th ACM Conference on Embedded Networked Sensor Systems (SenSys'2015) Seoul, South Korea, 2015

Josiah Hester [Abstract]

Demo: A Hardware Platform for Separating Energy Concerns in Tiny, Intermittently-Powered Sensors

13th ACM Conference on Embedded Networked Sensor Systems (SenSys'2015) Seoul, South Korea, 2015

Josiah Hester, Lanny Sitanayah, Jacob Sorber [Abstract]

Poster: Towards Robust Reprogrammability for Wireless Sensors *(BEST POSTER)

13th ACM Conference on Embedded Networked Sensor Systems (SenSys'2015) Seoul, South Korea, 2015

Nicole Tobias, Connor Bolton, Josiah Hester, Lanny Sitanayah, Jacob Sorber [Abstract]

Demo: Ekho: Realistic And Repeatable Experimentation For Tiny Energy-harvesting Sensors

12th ACM Conference on Embedded Networked Sensor Systems (SenSys'2014) Memphis, TN, 2014

Josiah Hester, Timothy Scott, Jacob Sorber [Abstract] [Poster]

Poster: Enabling Sustainable Sensing in Adverse Environments *(BEST POSTER)

IEEE International Conference on Sensing, Communication, and Networking (SECON'2013) New Orleans USA, 2013

Josiah Hester, Trae King, Alex Propst, Kalyan Piratla, Jacob Sorber [Abstract] [Poster]

Selected Software Projects


Esoteric Languages Playground

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Simple Brainf*ck, Ook!, Deadfish, and Befunge-93 interpreters written in JavaScript, with a scratch pad and terminal emulator to play around with them.

beSocratic Learning Systems

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beSocratic is an online assessment system focused on providing students with proper feedback and teachers with meaningful analysis. I authored the iPad and mobile web student facing viewer application.

Python Online

Simple python interpreter written in JavaScript using Jison as a parser generator and lexer. Bastardized, poorly written, barely functional with all the useful features of the language stripped out. Purely an academic exercise.

Physical Simulation Demos

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This project contains a progression of physical simulations using OpenGL, GLSL, and WebGL. Currently holds a bouning ball simulation in WebGL, and GPU based implementations of particles, flocking, and deformable bodies.

CC1101 / CC2500 Library for MSP430

Simple, one header library that interfaces over SPI with the CC110X chips (and probably the CC2500). These are common, cheap, and good low frequency RF transcievers you can find around the internet. This library is meant as a small footprint replacement for MRFI and BSP. This library works great with the CC1101 PCB described below.

Selected Hardware Projects


Ekho Analog-Front-End

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Analog-front-end for Ekho, this does the IV measurements, and interfaces with the MCU and synthetic load, or test device to record or emulate IV-surfaces.

CC1101 433MHz Transceiver Rev. B

Tuned to 433MHz, very small, RF transceiver using TI’s standard CC1101 module, and a chip antenna. Parts needed are listed in the schematic.

UMich Moo EAGLE Port

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The UMich Moo is a passive Computational RFID platform that harvests RFID reader energy from the UHF band, communicates with an RFID reader, and processes data from its onboard temperature sensor and accelerometer. I maintain the EAGLE port of the design files.

Structural Health Monitoring

SHM Breakout

Used to monitor the structural health of older buildings by breaking out a high accuracy, low noise, precision accelerometer from Silicon Designs. Sits in a low noise package with very low shutdown current. Soon to be deployed on Fort Sumter.

Ekho Mobile 2L Rev. B

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Mobile version of Ekho as a Teensy daughter board. Programmable duty cycle, can last for weeks gathering IV-surfaces.

Everything Else

Awards

Outstanding CS PhD Student Award

Awarded by the School of Computing at Clemson University 2016

Clemson, SC

Best Poster for "Towards Robust Reprogrammability for Wireless Sensors"

Awarded by SenSys'15 2015

Seoul, Korea

Best Paper for "Ekho: Realistic and Repeatable Experimentation for Tiny Energy-Harvesting Sensors"

Awarded by SenSys'14 2014

Memphis, TN

Best Poster for "Enabling Sustainable Sensing in Adverse Environments"

Awarded by IEEE SECON 2013

New Orleans, LA

Intercultural Achievement Award

Awarded by Gantt Center for Student Life 2009, 2010, 2011

Clemson University [Article]

Educational Enrichment Travel Grant

Awarded by Calhoun Honors College 2010

Clemson University

India Housing Project Participant

Awarded by Calhoun Honors College 2009

Represented Clemson on a month-long, multi-national, humanitarian mission to an impoverished part of Tamil Nadu, India. [Article]

Teaching

Instructor, Course Designer

CPSC 4820/6820: Embedded Systems Prototyping Fall 2015

Clemson University

Lab Teaching Assistant

CPSC 215: Software Development Foundations Fall 2011

Clemson University

Service

Member

College of Engineering and Science Student Advisory Board 2015 - 2016

Secretary

School of Computing Graduate Student Association 2013 - 2014

Chairman

Student Advisory Board for Online Education 2012 - 2013

Recent Industry Experience

Penton Media Inc.

iOS & Android Consultant 2012 - 2013

Lead development of iOS and Android mobile apps for multiple properties in the Penton Media portfolio. Also mentored and trained other developers in mobile best practices.

Pacific Hi-Tech

Creative Media Consultant 2008 - 2013

Lead developer and contractor for all things mobile, and web.

Clemson University

Web Applications Developer/Designer 2008 - 2010

Redesigned MessageGrid, a student collaboration tool. Also wrote parts of CUeportfolio, Clemson's online artifact tagging system.

Certifications & Recognition

Titanium Certified Mobile Developer

Appcelerator Inc. January 11th, 2013

Appcelerator Titanium Titan

Appcelerator Inc. July 3rd, 2012

Titanium Certified App Developer

Appcelerator Inc. July 3rd, 2012

Get in Touch

Contact Me

Email jhester@clemson.edu

Website josiahhester.com

Follow Me

Google Scholar Profile

Github Code

BitBucket Code

Stackexchange profile for Josiah Hester on Stack Exchange, a network of free, community-driven Q&A sites