Lessons Learned Building a General Purpose Cluster

2006 ◽  
Author(s):  
Michael AuYeung Brooks Davis
Keyword(s):  
General Purpose ◽  
Lessons Learned

scholarly journals Active robot-assisted feeding with a general-purpose mobile manipulator: Design, evaluation, and lessons learned

2020 ◽  
Vol 124 ◽  
pp. 103344 ◽  
Author(s):  
Daehyung Park ◽  
Yuuna Hoshi ◽  
Harshal P. Mahajan ◽  
Ho Keun Kim ◽  
Zackory Erickson ◽  
...  
Keyword(s):  
General Purpose ◽  
Lessons Learned ◽  
Mobile Manipulator ◽  
Design Evaluation ◽  
Robot Assisted ◽  
Manipulator Design

Viable Production of Diesel From Non-Recyclable Waste Plastics

2013 ◽  
Author(s):  
John William Bordynuik
Keyword(s):  
Process Development ◽  
Scale Up ◽  
General Purpose ◽  
Lessons Learned ◽  
Waste Plastics ◽  
Liquid Hydrocarbons ◽  
Waste Plastic ◽  
Wide Range ◽  
Grand Island ◽  
Barriers And Challenges

The art of refining liquid hydrocarbons (crude oil) into diesel, gasoline, and fuel oils was commercially scaled decades ago. Unfortunately, refineries are technologically limited to accepting only a very narrow range of liquid hydrocarbons with very specific properties and minimal contaminates. Unrecyclable, hydrocarbon-based waste is a significant environmental problem increasing every year. According to the Environmental Protection Agency’s 2010 Facts and Figures report, over 92% of waste plastic is not recycled and with a growth rate of approximately 8% per year, there exists a critical need for a viable and environmentally sound, general purpose hydrocarbon-based recycling process. Hydrocarbon streams that fall outside of accepted refinery standards have traditionally been landfilled or melted into products of low value. The barriers and challenges are so great that previous attempts to refine waste plastics into fuel resulted in unviable batch-based machines producing low-value, unstable mixed fuels. However, over the course of three years JBI, Inc. (“JBI”) has broken through these barriers and has designed and built a viable commercial-scale continuous refinery capable of processing a wide-range of hydrocarbon-based waste into ASTM specification fuels. Research and testing of scale-up through 1-gallon, 3000 gallon, multi-kiln, and 40 ton/day processors took place in a plant in Niagara Falls, NY. Technical challenges encountered and lessons learned during process development will be explained in detail. In 2009, our technology was “molecularly audited” by IsleChem, LLC (“IsleChem”) of Grand Island, NY and in 2012, the full-scale plant was viably validated by SAIC Energy, Environment & Infrastructure, LLC (“SAIC”). Numerous sources of waste plastic and users of the resulting fuel products conducted extensive audits of the technology, process, and plant. For the purpose of this paper, processing of waste plastics will be discussed in detail; however, this technology can be applied to other waste hydrocarbon-based materials such as contaminated monomers, waste oils, lubricants and other composite waste streams.

ICARUS: The Construction of and Lessons Learned from a General-Purpose Autonomy System

2009 ◽  
Author(s):  
Jerry Franke ◽  
Vera Moffitt ◽  
Drew Housten ◽  
John Clark ◽  
Anthony Lizardi
Keyword(s):  
General Purpose ◽  
Lessons Learned

scholarly journals A balancing act: The ideal and the realistic in developing Dryad’s preservation policy

First Monday ◽  
2014 ◽  
Author(s):  
Sara Mannheimer ◽  
Ayoung Yoon ◽  
Jane Greenberg ◽  
Elena Feinstein ◽  
Ryan Scherle
Keyword(s):  
Policy Development ◽  
General Purpose ◽  
Lessons Learned ◽  
Digital Data ◽  
Scientific Publications ◽  
Data Preservation ◽  
Policy Development Process ◽  
Preservation Policy ◽  
International Experts ◽  
The Ideal

Data preservation has gained momentum and visibility in connection with the growth in digital data and data sharing policies. The Dryad Repository, a curated general–purpose repository for preserving and sharing the data underlying scientific publications, has taken steps to develop a preservation policy to ensure the long–term persistence of this archived data. In 2013, a Preservation Working Group, consisting of Dryad staff and national and international experts in data management and preservation, was convened to guide the development of a preservation policy. This paper describes the policy development process, outcomes, and lessons learned in the process. To meet Dryad’s specific needs, Dryad’s preservation policy negotiates between the ideal and the realistic, including complying with broader governing policies, matching current practices, and working within system constraints.

scholarly journals POPLMark reloaded: Mechanizing proofs by logical relations

2019 ◽  
Vol 29 ◽  
Author(s):  
ANDREAS ABEL ◽  
GUILLAUME ALLAIS ◽  
ALIYA HAMEER ◽  
BRIGITTE PIENTKA ◽  
ALBERTO MOMIGLIANO ◽  
...  
Keyword(s):  
Programming Languages ◽  
State Of The Art ◽  
General Purpose ◽  
Higher Order ◽  
Lessons Learned ◽  
Benchmark Problems ◽  
Proof Assistants ◽  
Abstract Syntax ◽  
The Masses

Abstract We propose a new collection of benchmark problems in mechanizing the metatheory of programming languages, in order to compare and push the state of the art of proof assistants. In particular, we focus on proofs using logical relations (LRs) and propose establishing strong normalization of a simply typed calculus with a proof by Kripke-style LRs as a benchmark. We give a modern view of this well-understood problem by formulating our LR on well-typed terms. Using this case study, we share some of the lessons learned tackling this problem in different dependently typed proof environments. In particular, we consider the mechanization in Beluga, a proof environment that supports higher-order abstract syntax encodings and contrast it to the development and strategies used in general-purpose proof assistants such as Coq and Agda. The goal of this paper is to engage the community in discussions on what support in proof environments is needed to truly bring mechanized metatheory to the masses and engage said community in the crafting of future benchmarks.

Integration, Development and Performance of the 500 TFLOPS Heterogeneous Cluster (Condor)

2012 ◽  
Author(s):  
Mark Barnell ◽  
Qing Wu ◽  
Richard Linderman
Keyword(s):  
Performance Optimization ◽  
High Performance ◽  
Large Scale ◽  
Situational Awareness ◽  
General Purpose ◽  
Lessons Learned ◽  
Heterogeneous Cluster ◽  
Graphic Processing Units ◽  
Intelligence Models ◽  
And Performance

The Air Force Research Laboratory Information Directorate Advanced Computing Division (AFRL/RIT) High Performance Computing Affiliated Resource Center (HPC-ARC) is the host to a very large scale interactive computing cluster consisting of about 1800 nodes. Condor, the largest interactive Cell cluster in the world, consists of integrated heterogeneous processors of IBM Cell Broadband Engine (Cell BE) multicore CPUs, NVIDIA General Purpose Graphic Processing Units (GPGPUs) and Intel x86 server nodes in a 10Gb Ethernet Star Hub network and 20Gb/s Infiniband Mesh, with a combined capability of 500 trillion floating operations per second (TFLOPS). Applications developed and running on CONDOR include large-scale computational intelligence models, video synthetic aperture radar (SAR) back-projection, Space Situational Awareness (SSA), video target tracking, linear algebra and others. This presentation will discuss the design and integration of the system. It will also show progress on performance optimization efforts and lessons learned on algorithm scalability on a heterogeneous architecture.

Virtualization of residential customer premise equipment. Lessons learned in Brazil vCPE trial

2015 ◽  
Vol 57 (5) ◽  
Author(s):  
Rafael Cantó Palancar ◽  
Rafael Alejandro López da Silva ◽  
Jesús Luis Folgueira Chavarría ◽  
Diego R. López ◽  
Antonio J. Elizondo Armengol ◽  
...  
Keyword(s):  
Network Virtualization ◽  
General Purpose ◽  
Lessons Learned ◽  
Use Case ◽  
Great Opportunity ◽  
Set Top Box ◽  
Address Translation ◽  
Customer Premise Equipment ◽  
Network Operations ◽  
Network Functions

AbstractThis paper presents Telefónica approach for virtualizing residential customer premises equipment (vCPE), showing how the equipment at a customer's home can be simplified and how the management of resources and services improves as a result. This use case of virtualization enables the operator to shift most functions from the residential gateways towards the carrier own network, by running them on general-purpose servers at the operator premises. This makes it possible that network functions such as IP routing, IP address management (DHCP), address translation (NAT), firewall, Set Top Box functionalities (live TV, VoD, etc.), etc. are maintained and upgraded from the most efficient location. Because of the expected high impact onto the economics of the Telco network operations, the virtualization of the CPE is considered by the authors as one promising use case of Network Virtualization technologies. The virtual CPE approach is being tested in Brazil (where Telefónica operates under the Vivo brand), and represents a great opportunity for learning lessons on development and deployment of Virtual Network Functions (VNFs). Some of them are summarized in this paper.

Lessons Learned From Coaching Postsecondary Students With Traumatic Brain Injury

2020 ◽  
Vol 5 (1) ◽  
pp. 88-96
Author(s):  
Mary R. T. Kennedy
Keyword(s):  
College Students ◽  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Sense Of Self ◽  
Scientific Evidence ◽  
Sudden Onset ◽  
Lessons Learned ◽  
Speech Language Pathologists ◽  
The Brain ◽  
Exhaustive List

Purpose The purpose of this clinical focus article is to provide speech-language pathologists with a brief update of the evidence that provides possible explanations for our experiences while coaching college students with traumatic brain injury (TBI). Method The narrative text provides readers with lessons we learned as speech-language pathologists functioning as cognitive coaches to college students with TBI. This is not meant to be an exhaustive list, but rather to consider the recent scientific evidence that will help our understanding of how best to coach these college students. Conclusion Four lessons are described. Lesson 1 focuses on the value of self-reported responses to surveys, questionnaires, and interviews. Lesson 2 addresses the use of immediate/proximal goals as leverage for students to update their sense of self and how their abilities and disabilities may alter their more distal goals. Lesson 3 reminds us that teamwork is necessary to address the complex issues facing these students, which include their developmental stage, the sudden onset of trauma to the brain, and having to navigate going to college with a TBI. Lesson 4 focuses on the need for college students with TBI to learn how to self-advocate with instructors, family, and peers.

Experiences With and Lessons Learned From Developing, Implementing, and Evaluating a Support Program for Older Hearing Aid Users and Their Communication Partners in the Hearing Aid Dispensing Setting

2020 ◽  
Vol 29 (3S) ◽  
pp. 638-647 ◽  
Author(s):  
Janine F. J. Meijerink ◽  
Marieke Pronk ◽  
Sophia E. Kramer
Keyword(s):  
Large Scale ◽  
Hearing Aid ◽  
Critical Discussion ◽  
Lessons Learned ◽  
Research Note ◽  
Support Program ◽  
Large Sample Size ◽  
Long Term Effects ◽  
Communication Program ◽  
Communication Partners

Purpose The SUpport PRogram (SUPR) study was carried out in the context of a private academic partnership and is the first study to evaluate the long-term effects of a communication program (SUPR) for older hearing aid users and their communication partners on a large scale in a hearing aid dispensing setting. The purpose of this research note is to reflect on the lessons that we learned during the different development, implementation, and evaluation phases of the SUPR project. Procedure This research note describes the procedures that were followed during the different phases of the SUPR project and provides a critical discussion to describe the strengths and weaknesses of the approach taken. Conclusion This research note might provide researchers and intervention developers with useful insights as to how aural rehabilitation interventions, such as the SUPR, can be developed by incorporating the needs of the different stakeholders, evaluated by using a robust research design (including a large sample size and a longer term follow-up assessment), and implemented widely by collaborating with a private partner (hearing aid dispensing practice chain).

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