The Internet of Things in the Cloud
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Transactional Concurrency Control for Intermittent, Energy-Harvesting Computing Systems
PLDI ’19, June 22ś26, 2019, Phoenix, AZ, USA Emily Ruppel and Brandon Lucia 52, 55, 82] and preserving progress [6, 7, 53]. Recent work sequences of multiple tasks to execute atomically with re- addressed input/output (I/O), ensuring that computations spect to events. Coati’s support for events and transactions were timely in their consumption of data collected from sen- is the main contribution of this work. Coati provides the sors [15, 31, 86]. However, no prior work on intermittent critical ability to ensure correct synchronization across re- computing provides clear semantics for programs that use gions of code that are too large to complete in a single power event-driven concurrency, handling asynchronous I/O events cycle. Figure 1 shows a Coati program with three tasks con- in interrupts that share state with transactional computa- tained in a transaction manipulating related variables x, y, tions that execute in a main control loop. The idiomatic use of and z, while an asynchronous event updates x and y. Coati interrupts to collect, process, and store sensor results is very ensures atomicity of all tasks in the figure, even if any task common in embedded systems. The absence of this event- individually is forced to restart by a power failure. driven I/O support in intermittent systems is an impediment This work explores the design space of transaction, task, to developing batteryless, energy-harvesting applications. and event implementations by examining two models that Combining interrupts and transactional computations in make different trade-offs between complexity and latency. an intermittent system creates a number of unique problems Coati employs a split-phase model that handles time-critical that we address in this work using new system support. -
Design, the Future and the Human Spirit Victor Margolin
Design, the Future and the Human Spirit Victor Margolin Introduction Designers, like everyone else on the planet, have good reason to be concerned about the future. The world is volatile, and the ability of the human race to make a healthy home for itself is at stake. Threats from global warming, poor nutrition, disease, terrorism, and nuclear weapons challenge the potential of everyone to exercise productive energies for the common good. Designers are certainly among those whose positive contribu- tions are essential to the building of a more humane world. Trained in many disciplines—whether product design, architecture, engi- neering, visual communication, or software development—they are responsible for the artifacts, systems, and environments that make up the social world—bridges, buildings, the Internet, transportation, advertising, and clothing, to cite only a few examples. Companies would have nothing to manufacture without designers, nor would they have services to offer. Paradoxically, designers united as a professional class could be inordinately powerful and yet their voices in the various fora where social policies and plans are discussed and debated are rarely present. While the world has heard many calls for social change, few have come from designers themselves, in part because the design community has not produced its own arguments about what kinds of change it would like to see. Notwithstanding the discursive and practical potential to address this issue, the worldwide design community has yet to generate profession-wide visions of how its energies might be harnessed for social ends.1 As creators of models, prototypes, and propositions, design- ers occupy a dialectical space between the world that is and the world that could be. -
Beyond Interoperability – Pushing the Performance of Sensor Network IP Stacks
Industry: Beyond Interoperability – Pushing the Performance of Sensor Network IP Stacks JeongGil Ko Joakim Eriksson Nicolas Tsiftes Department of Computer Science Swedish Institute of Computer Swedish Institute of Computer Johns Hopkins University Science (SICS) Science (SICS) Baltimore, MD 21218, USA Box 1263, SE-16429 Kista, Box 1263, SE-16429 Kista, [email protected] Sweden Sweden [email protected] [email protected] Stephen Dawson-Haggerty Jean-Philippe Vasseur Mathilde Durvy Computer Science Division Cisco Systems Cisco Systems University of California, Berkeley 11, Rue Camille Desmoulins, Issy 11, Rue Camille Desmoulins, Issy Berkeley, CA 94720, USA Les Moulineaux, 92782, France Les Moulineaux, 92782, France [email protected] [email protected] [email protected] Abstract General Terms Interoperability is essential for the commercial adoption Experimentation, Performance, Standardization of wireless sensor networks. However, existing sensor net- Keywords work architectures have been developed in isolation and thus IPv6, 6LoWPAN, RPL, IETF, Interoperability, Sensor interoperability has not been a concern. Recently, IP has Network, TinyOS, Contiki been proposed as a solution to the interoperability problem of low-power and lossy networks (LLNs), considering its open 1 Introduction and standards-based architecture at the network, transport, For wireless sensor networks to be widely adopted by and application layers. We present two complete and in- the industry, hardware and software implementations from teroperable implementations of the IPv6 protocol stack for different vendors need to interoperate and perform well to- LLNs, one for Contiki and one for TinyOS, and show that gether. While IEEE 802.15.4 has emerged as a common the cost of interoperability is low: their performance and physical layer that is used both in commercial sensor net- overhead is on par with state-of-the-art protocol stacks cus- works and in academic research, interoperability at the phys- tom built for the two platforms. -
Fnio Ethernet Specification
FnIO-S System FnIO Adapter SPECIFICATION Rev 3.02 NA-9286 (EtherCAT) Page 1 of 33 FnIO S–Series: NA-9286 EtherCAT Adapter FnIO-S System FnIO Adapter SPECIFICATION Rev 3.01 NA-9286 (EtherCAT) Page 2 of 33 DOCUMENT CHANGE SUMMARY REV. PAGES REMARKS DATE Editor N/A New Document Draft release 2012/6/13 Kim, HY 1.00 Release 2013/1/14 Kim, HY 2.00 Renamed NA-9186 → NA-9286 2013/8/7 Kim, HY 3.00 Image Update 2014/2/27 Kim, YM 3.01 Master fault action option is added (0x1100) 2016/10/6 DHLEE Register 0x1101 is removed 3.02 SDO list added 2017/5/25 DHLEE FnIO-S System FnIO Adapter SPECIFICATION Rev 3.01 NA-9286 (EtherCAT) Page 3 of 33 Table of Contents 1 FNBUS OVERVIEW.......................................................................................................................................4 1.1 FNBUS SYSTEM.................................................................................................................................................................4 1.2 FNBUS PIN DESCRIPTION...................................................................................................................................................5 2 ETHERCAT ADAPTER MODULE..............................................................................................................6 2.1 THE INTERFACE................................................................................................................................................................6 2.2 ENVIRONMENT SPECIFICATION............................................................................................................................................7 -
Bruce Sterling, July 2019
Science Fiction Book Club Interview with Bruce Sterling, July 2019 Bruce Sterling is a prominent science fiction writer and a pioneer of the cyberpunk genre. Novels like Heavy Weather (1994), Islands in the Net (1988), Schismatrix (1985), The Artificial Kid (1980) earned him the nickname “Chairman Bruce”. Apart from his writings, Bruce Sterling is also a professor of internet studies and science fiction at the European Graduate School. He has contributed to several projects within the scheme of futurist theory, founded an environmental aesthetic movement, edited anthologies and he still continues to write for several magazines including Wired, Discover, Architectural Record and The Atlantic. David Stuckey: Have you considered a return to the world of “The Difference Engine” for stories or another novel? Bruce Sterling: That won’t happen. David Stuckey: If you were going to write “Involution Ocean” today, what would you change or do differently? Bruce Sterling: Well, alien planet adventures are a really dated form of space opera. On the other hand, they’re great when you’re 20 years old. If I were doing a project like that today I might make it a comic book. Or a webcomic. It might make a nice anime cartoon. Richard Whyte: In the 2018 ‘State of the World’ conversation on the Well, you said you were in Ibiza working on a novel. Are you able to tell us anything about it yet? Bruce Sterling: I dunno if I’m ever gonna finish this epic novel about the history of the city of Turin, but I seem to get a lot of work done on it when I’m in Ibiza. -
AKD Scalability Brochure EN Revc
AKD SCALABLE PROGRAMMABILITY About Kollmorgen Kollmorgen is a leading provider of motion systems and components for machine builders. Through world-class knowledge in motion, industry-leading quality and deep expertise in linking and integrating standard and Application Centers Experience Scalable Programmability Micron™ Gearheads custom products, Kollmorgen delivers breakthrough Global Design & Manufacturing solutions that are unmatched in performance, reliability ™ Optimize Your Machine with the Leader Global Manufacturing and ease-of-use, giving machine builders an irrefutable with Advanced Kollmorgen Drive in Motion Control. marketplace advantage. For assistance with your application needs, Motion is at our core. We consistently maintain the highest standards contact us at: 540-633-3545, [email protected] or visit of quality, innovation and technology. We help you build in exceptional kollmorgen.com for a global contact list. motion performance, reliability and longevity, while considering cost AKM™ Servomotors and time-to-market challenges. Find Your Solution from the Broadest Range in the Industry Our breadth of products allows for a range of solutions—standard, modified orcustom. Stockholm Säro You can depend on our integrated, optimized components and hit the ground running in any application with ease. Fond du Lac Ratingen Kollmorgen Cartridge DDR™ Motors Marengo Lausanne Brno Milan Beijing Rely on Our Support and a Global Footprint to Help You Build a Differentiated Machine Radford Tianjin Santa Barbara Tokyo Nagoya With Kollmorgen, you’re getting great value and strength. We leverage a team of more than 1,800 Tijuana Shanghai employees, and over 60 years of application experience applied to selecting the optimum motion Hong Kong Mumbai components for your machine. -
Total Control Products, Inc
Allen-Bradley Allen-Bradley SLC 500 Setup for using an A-B SLC 500 Use the following procedure to ensure your target device is setup properly for the Allen-Bradley SLC 500. The procedure is in condensed format. Only the required settings are outlined. For additional details, see Creating a New Project beginning on page 3. Project Setup The drawing is a diagram of the Project Setup dialog box. Each button will display an additional dialog box. Many settings are options and are not required to establish communications. Verify the Project name and Display Device Model are correct. Leave the Initial Screen name blank. Project Setup Project Notes Project name: Project name appears in this field More Disable Beeper Display Device Model Model description appears in this field Default Panel Name Initial Screen Print (Inactive) Screen Saver Timeout Display Touch Print PLC Protocol setup PLC & Protocols Panel Trigger Tag Electrical Format CN1 PLC Type PLC Protocol name appears here Watchdog Tag Serial Parameters Watchdog timeout Port Protocol System OK Cancel Help PLC Type Select the PLC type from the list box. (AB SLC DH485). See PLC Type on page 5. QUICKDESIGNER Allen-Bradley • 11 Port Button Click the Port button to display the Serial Parameters dialog. The port values are automatically set to standard default values. See Serial Parameters on page 6. The following settings are recommended for AB SLC DH485. Elect. Format RS422 Half Duplex (When using the HMI-CAB-C83 Cable) or Elect. Format RS232 (When using the HMI-CAB-C84 Cable) Baud Rate 19200 Data Bits 8 Parity Even Stop Bits 1 Handshake None Protocol Button Click the Protocol button to display the dialog box associated with the selected PLC. -
Spimes Not Things: Creating a Design Manifesto for a Sustainable Internet of Things
Running with Scissors, 13th EAD Conference University of Dundee, 10-12 April 2019 Spimes Not Things: Creating A Design Manifesto for A SustainaBle Internet of Things Michael Steada*, Paul CoultonB, Joseph Lindleyc aHighWire CDT, Lancaster University BImaginationLancaster, Lancaster University cImaginationLancaster, Lancaster University *Corresponding author e-mail: [email protected] Abstract: The rhetoric that surrounds the Internet of Things (IoT) contends it will bring about utopian transformative change throughout society, particularly in regards to sustainaBility. Little discourse however, recognises the intrinsically unsustainable nature of IoT devices themselves. Under a façade of innovation, the IoT is a Breeding ground for superfluous, novelty ‘gizmo’ products whose design incorporates environmentally damaging modes of manufacture, consumption and disposal. To Bring attention to this growing unsustainaBle design culture, we have produced a manifesto entitled Spimes Not Things: A Design Manifesto for A Sustainable Internet of Things. It is the synthesis of a practice-led research project which explores Sterling’s spimes concept using Design Fiction methods, as part of a Research through Design approach. This paper outlines the manifesto’s creation, its theoretical foundations and its intentions. The manifesto is the first step towards the reframing of design practices that will contriBute to a more sustainaBle IoT product paradigm. Keywords: Spimes, SustainaBility, Internet of Things, Manifesto, Design Fiction 1. Introduction The rhetoric that surrounds the Internet of Things (IoT) across academia and industry is both persuasive and turgid. Many commentators posit that through its eXpanding array of networked artefacts, sensors and AI capaBilities, the IoT will Bring aBout utopian transformative change to all sectors of society, from healthcare and energy, to transport and finance (Government Office for Science, 2014; Fritsch, Shklovski, & Douglas-Jones, 2018). -
Shared Sensor Networks Fundamentals, Challenges, Opportunities, Virtualization Techniques, Comparative Analysis, Novel Architecture and Taxonomy
Journal of Sensor and Actuator Networks Review Shared Sensor Networks Fundamentals, Challenges, Opportunities, Virtualization Techniques, Comparative Analysis, Novel Architecture and Taxonomy Nahla S. Abdel Azeem 1, Ibrahim Tarrad 2, Anar Abdel Hady 3,4, M. I. Youssef 2 and Sherine M. Abd El-kader 3,* 1 Information Technology Center, Electronics Research Institute (ERI), El Tahrir st, El Dokki, Giza 12622, Egypt; [email protected] 2 Electrical Engineering Department, Al-Azhar University, Naser City, Cairo 11651, Egypt; [email protected] (I.T.); [email protected] (M.I.Y.) 3 Computers & Systems Department, Electronics Research Institute (ERI), El Tahrir st, El Dokki, Giza 12622, Egypt; [email protected] 4 Department of Computer Science & Engineering, School of Engineering and Applied Science, Washington University in St. Louis, St. Louis, MO 63130, 1045, USA; [email protected] * Correspondence: [email protected] Received: 19 March 2019; Accepted: 7 May 2019; Published: 15 May 2019 Abstract: The rabid growth of today’s technological world has led us to connecting every electronic device worldwide together, which guides us towards the Internet of Things (IoT). Gathering the produced information based on a very tiny sensing devices under the umbrella of Wireless Sensor Networks (WSNs). The nature of these networks suffers from missing sharing among them in both hardware and software, which causes redundancy and more budget to be used. Thus, the appearance of Shared Sensor Networks (SSNs) provides a real modern revolution in it. Where it targets making a real change in its nature from domain specific networks to concurrent running domain networks. That happens by merging it with the technology of virtualization that enables the sharing feature over different levels of its hardware and software to provide the optimal utilization of the deployed infrastructure with a reduced cost. -
Contemporary Developments in Wireless Sensor Networks
I.J.Modern Education and Computer Science, 2012, 3, 1-13 Published Online April 2012 in MECS (http://www.mecs-press.org/) DOI: 10.5815/ijmecs.2012.03.01 Contemporary Developments in Wireless Sensor Networks Sangeeta Mittal Department of Computer Science & Information Technology, Jaypee Institute of Information Technology, Noida, India Email: [email protected] Alok Aggarwal Department of Computer Science & Information Technology, Jaypee Institute of Information Technology, Noida, India Email: [email protected] S.L. Maskara G2W - Soura Niloy. 1 - Kailash Ghosh Road.Kolkata - 700 008. ( WB ). India Email: [email protected] Abstract—Wireless Sensor Networks (WSN) since their made a tremendous progress. An analysis of inception, a decade ago, have grown well in research and contemporary developments in these sub areas of WSN is implementation. In this work the developments in WSNs are the subject matter of this paper and we elaborate on these reported in three sub areas of wireless sensor networks that aspects. The applications of WSN encompass many areas is, wireless sensor node (hardware and software), like healthcare, environmental monitoring, smart Communication & Networking issues in WSNs and application areas. WSNs are characterized by huge data dwellings and civil & battle field security. Still challenges hence research work in aggregation & mining is also such as design of new sensor devices to sense & calibrate discussed. Contemporary issues of integration of WSNs with phenomenon of new interests, integration of WSNs with other prevalent networks, sensor enabled smartness and co existing networks and meaningful interpretation of role of artificial intelligence methods is elaborated. Insight sensor data has to be addressed [4][5]. -
Physical Process Cruise 2018 020720
Physical Process Cruise 2018 Cruise Report The Nansen Legacy Report Series 2/2020 Physical Process Cruise 2018 Cruise 2018709 R.V. Kronprins Haakon Longyearbyen-Longyearbyen September 14 -September 24, 2018 Authors: Ilker Fer – cruise leader Frank Nilsen- cruise co-leader Anthony Bosse Eva Falck Trygve Fossum Lars R Hole Zoe Koenig Eivind Kolås Aleksander Dürr Libæk Ben Lincoln Martin Ludvigsen Marika Marnela Malte Müller Petter Norgren Inger Lise Næss Jean Rabault Andrew Siedl Ragnheid Skogseth Inga Breisnes Utkilen To be cited as: Ilker Fer, Frank Nilsen, Anthony Bosse, Eva Falck, Trygve Fossum, Lars R Hole, Zoe Koenig, Eivind Kolås, Aleksander Dürr Libæk, Ben Lincoln, Martin Ludvigsen, Marika Marnela, Malte Müller, Petter Norgren, Inger Lise Næss, Jean Rabault, Andrew Siedl, Ragnheid Skogseth and Inga Breisnes Utkilen (2020). Physical Process Cruise 2018: Cruise Report. The Nansen Legacy Report Series, 2/2020. DOI: https://doi.org/10.7557/nlrs.5503 © The authors. This report is licensed under the Creative Commons Attribution 4.0 International license ISSN 2703-7525 Publisher: Septentrio Academic Publishing, Tromsø, Norway 1 Contents 1. Background ......................................................................................................................................... 4 2. Survey area ......................................................................................................................................... 5 3. Activity reports ................................................................................................................................. -
Meteorological Monitoring Guidance for Regulatory Modeling Applications
United States Office of Air Quality EPA-454/R-99-005 Environmental Protection Planning and Standards Agency Research Triangle Park, NC 27711 February 2000 Air EPA Meteorological Monitoring Guidance for Regulatory Modeling Applications Air Q of ua ice li ff ty O Clean Air Pla s nn ard in nd g and Sta EPA-454/R-99-005 Meteorological Monitoring Guidance for Regulatory Modeling Applications U.S. ENVIRONMENTAL PROTECTION AGENCY Office of Air and Radiation Office of Air Quality Planning and Standards Research Triangle Park, NC 27711 February 2000 DISCLAIMER This report has been reviewed by the U.S. Environmental Protection Agency (EPA) and has been approved for publication as an EPA document. Any mention of trade names or commercial products does not constitute endorsement or recommendation for use. ii PREFACE This document updates the June 1987 EPA document, "On-Site Meteorological Program Guidance for Regulatory Modeling Applications", EPA-450/4-87-013. The most significant change is the replacement of Section 9 with more comprehensive guidance on remote sensing and conventional radiosonde technologies for use in upper-air meteorological monitoring; previously this section provided guidance on the use of sodar technology. The other significant change is the addition to Section 8 (Quality Assurance) of material covering data validation for upper-air meteorological measurements. These changes incorporate guidance developed during the workshop on upper-air meteorological monitoring in July 1998. Editorial changes include the deletion of the “on-site” qualifier from the title and its selective replacement in the text with “site specific”; this provides consistency with recent changes in Appendix W to 40 CFR Part 51.