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The Algebra of Open and Interconnected Systems
The Algebra of Open and Interconnected Systems Brendan Fong Hertford College University of Oxford arXiv:1609.05382v1 [math.CT] 17 Sep 2016 A thesis submitted for the degree of Doctor of Philosophy in Computer Science Trinity 2016 For all those who have prepared food so I could eat and created homes so I could live over the past four years. You too have laboured to produce this; I hope I have done your labours justice. Abstract Herein we develop category-theoretic tools for understanding network- style diagrammatic languages. The archetypal network-style diagram- matic language is that of electric circuits; other examples include signal flow graphs, Markov processes, automata, Petri nets, chemical reaction networks, and so on. The key feature is that the language is comprised of a number of components with multiple (input/output) terminals, each possibly labelled with some type, that may then be connected together along these terminals to form a larger network. The components form hyperedges between labelled vertices, and so a diagram in this language forms a hypergraph. We formalise the compositional structure by intro- ducing the notion of a hypergraph category. Network-style diagrammatic languages and their semantics thus form hypergraph categories, and se- mantic interpretation gives a hypergraph functor. The first part of this thesis develops the theory of hypergraph categories. In particular, we introduce the tools of decorated cospans and corela- tions. Decorated cospans allow straightforward construction of hyper- graph categories from diagrammatic languages: the inputs, outputs, and their composition are modelled by the cospans, while the `decorations' specify the components themselves. -
Richard F. Ambrose
CURRICULUM VITAE RICHARD F. AMBROSE Department of Environmental Health Sciences, School of Public Health Institute of the Environment and Sustainability (310) 825-6144 University of California FAX (310) 794-2106 Los Angeles, CA 90095-1772 [email protected] EDUCATION Ph.D. 1982 University of California, Los Angeles. B.S. 1975 University of California, Irvine. PROFESSIONAL EXPERIENCE 2000-present Professor Department of Environmental Health Sciences Institute of the Environment and Sustainability (joint appointment 2008-present) University of California, Los Angeles 1998-2011 Director Environmental Science and Engineering Program, UCLA 1992-2000 Associate Professor Department of Environmental Health Sciences, UCLA 1985-1997 Assistant (1985-1991) and Associate (1991-97) Research Biologist Marine Science Institute University of California, Santa Barbara 1983-1984 Postdoctoral Fellow Department of Biological Sciences Simon Fraser University Burnaby, B.C., Canada V5A 1S6 1982 Visiting Lecturer Department of Biology, UCLA RESEARCH Major Research Interests Restoration ecology, especially for coastal marine and estuarine environments Relationship between ecosystem health and human health Urban ecology, including ecological aspects of sustainable water management Coastal ecology, including ecology of coastal wetlands and estuaries Interface between environmental biology and resource management policy Richard F. Ambrose - page 2 Research Grants and Contracts, R.F. Ambrose - Principal Investigator Marine Review Committee, Inc. A study of mitigation -
Annual Report
AAPG EMD Gas Hydrates Committee Report – 2009 By Bob Lankston and Art Johnson Progress toward commercialization of gas hydrates in North America and Asia is continuing in 2009, with some notable advancement in both resource assessment and technology. U.S. Exploration Activity With many challenges and unknowns remaining long-term, economically-viable production of natural gas from hydrates is as yet unproven. Gas hydrate R&D is the type of high cost, high-risk, high-potential endeavor that calls for government economic support. Progress in the U.S. has been limited by the relatively low budget levels of the Department of Energy (DOE) methane hydrate program, the primary source of funding for U.S. hydrate efforts. While Congress authorized $30 million for fiscal year 2008 and $40 million for fiscal year 2009 under the Energy Policy Act of 2005, the appropriation for each year was for only $16 million. The new administration has shown a higher level of interest in hydrate, particularly for its carbon sequestration potential. The areas of focus for U.S. hydrate efforts are the North Slope of Alaska and the Deepwater Gulf of Mexico. The companies that are most involved with gas hydrate programs in the U.S. include BP, Chevron, ConocoPhillips, Schlumberger, and Halliburton; although all of the operators on the North Slope are now becoming involved. Their in-kind contributions of labor and data are complemented by a substantial match of Federal funds. Several service companies are engaged in a support role as subcontractors. A long-term, industry-scale production test is planned for the North Slope in the summer of 2010 as a follow-up to BP’s successful “Mt. -
Parviz Izadjoo, Et Al. V. Helix Energy Solutions Group, Inc., Et Al. 15-CV
Case 4:15-cv-02213 Document 23 Filed in TXSD on 03/14/16 Page 1 of 29 UNITED STATES DISTRICT COURT SOUTHERN DISTRICT OF TEXAS HOUSTON DIVISION PARVIZ IZADJOO, Individually and on behalf of all others similarly situated, Plaintiff, Civ. Action No. : 4:15-CV-2213 v. OWEN KRATZ, and HELIX ENERGY SOLUTIONS JURY TRIAL DEMANDED GROUP, INC. Defendants. AMENDED CLASS ACTION COMPLAINT Lead Plaintiffs Steven Strassberg (“Strassberg”) and Bruce R. Siegfried (“Siegfried” and together with Strassberg, “Plaintiffs”), by and through their counsel, individually and on behalf of all others similarly situated, for their Amended Class Action Complaint against defendants Helix Energy Solutions Group, Inc. (“Helix” or “Company”) Owen Kratz (“Kratz”) Anthony Tripodo (“Tripodo”), and Clifford V. Chamblee (“Chamblee”), allege the following based upon personal knowledge as to themselves and their own acts, and information and belief as to all other matters, based upon, inter alia, the investigation conducted by and through their attorneys, which included, among other things, conversations with witnesses, a review of the defendants’ public documents, conference calls and announcements made by defendants, United States Securities and Exchange Commission (“SEC”) filings, wire and press releases published by and regarding Helix Energy Solutions Group, Inc. (“Helix” or “Company”), analysts’ reports and advisories about the Company, and information readily obtainable on the Internet. Plaintiffs believe that substantial Case 4:15-cv-02213 Document 23 Filed in TXSD on -
IT Project Quality Management
10 IT Project Quality Management CHAPTER OVERVIEW The focus of this chapter will be on several concepts and philosophies of quality man- agement. By learning about the people who founded the quality movement over the last fifty years, we can better understand how to apply these philosophies and teach- ings to develop a project quality management plan. After studying this chapter, you should understand and be able to: • Describe the Project Management Body of Knowledge (PMBOK) area called project quality management (PQM) and how it supports quality planning, qual ity assurance, quality control, and continuous improvement of the project's products and supporting processes. • Identify several quality gurus, or founders of the quality movement, and their role in shaping quality philosophies worldwide. • Describe some of the more common quality initiatives and management sys tems that include ISO certification, Six Sigma, and the Capability Maturity Model (CMM) for software engineering. • Distinguish between validation and verification activities and how these activi ties support IT project quality management. • Describe the software engineering discipline called configuration management and how it is used to manage the changes associated with all of the project's deliverables and work products. • Apply the quality concepts, methods, and tools introduced in this chapter to develop a project quality plan. GLOBAL TECHNOLOGY SOLUTIONS It was mid-afternoon when Tim Williams walked into the GTS conference room. Two of the Husky Air team members, Sitaraman and Yan, were already seated at the 217 218 CHAPTER 10 / IT PROJECT QUALITY MANAGEMENT conference table. Tim took his usual seat, and asked "So how did the demonstration of the user interface go this morning?" Sitaraman glanced at Yan and then focused his attention on Tim's question. -
Computer Algebra and Mathematics with the HP40G Version 1.0
Computer Algebra and Mathematics with the HP40G Version 1.0 Renée de Graeve Lecturer at Grenoble I Exact Calculation and Mathematics with the HP40G Acknowledgments It was not believed possible to write an efficient program for computer algebra all on one’s own. But one bright person by the name of Bernard Parisse didn’t know that—and did it! This is his program for computer algebra (called ERABLE), built for the second time into an HP calculator. The development of this calculator has led Bernard Parisse to modify his program somewhat so that the computer algebra functions could be edited and cause the appropriate results to be displayed in the Equation Editor. Explore all the capabilities of this calculator, as set out in the following pages. I would like to thank: • Bernard Parisse for his invaluable counsel, his remarks on the text, his reviews, and for his ability to provide functions on demand both efficiently and graciously. • Jean Tavenas for the concern shown towards the completion of this guide. • Jean Yves Avenard for taking on board our requests, and for writing the PROMPT command in the very spirit of promptness—and with no advance warning. (refer to 6.4.2.). © 2000 Hewlett-Packard, http://www.hp.com/calculators The reproduction, distribution and/or the modification of this document is authorised according to the terms of the GNU Free Documentation License, Version 1.1 or later, published by the Free Software Foundation. A copy of this license exists under the section entitled “GNU Free Documentation License” (Chapter 8, p. 141). -
CAS, an Introduction to the HP Computer Algebra System
CAS, An introduction to the HP Computer Algebra System Background Any mathematician will quickly appreciate the advantages offered by a CAS, or Computer Algebra System1, which allows the user to perform complex symbolic algebraic manipulations on the calculator. Algebraic integration by parts and by substitution, the solution of differential equations, inequalities, simultaneous equations with algebraic or complex coefficients, the evaluation of limits and many other problems can be solved quickly and easily using a CAS. Importantly, solutions can be obtained as exact values such as 5−1, 25≤ x < or 4π rather than the usual decimal values given by numeric methods of successive approximation. Values can be displayed to almost any degree of accuracy required, allowing the user to view, for example, the exact value of a number such as 100 factorial. The HP CAS The HP CAS system was created by Bernard Parisse, Université de Grenoble, for the HP 49g calculator. It was improved and adapted for inclusion on the HP 40g with the help of Renée De Graeve, Jean-Yves Avenard and Jean Tavenas2. The HP CAS system offers the user a vast array of functions and abilities as well as an easy user interface which displays equations as they appear on the page. It also includes the ability to display many algebraic calculations in ‘step-by-step’ mode, making it an invaluable teaching tool in universities and schools. Functions are grouped by category and accessed via menus at the bottom of the screen. Copyright© 2005, Applications in Mathematics Learning to use the CAS Learning to use the CAS is very easy but, as with any powerful tool, truly effective use requires familiarity and time. -
Idyllwild $31,220 Tuesday, Aug
Summer Concer llwild t Seri 75¢ Idy Your es (Tax Included) Needs Help! Total needed $32,420 As of Idyllwild $31,220 Tuesday, Aug. 30, 2016 Idyllwild’s Only Newspaper Send Donations to: Idyllwild Tow n Crıer Summer Concerts Inc. P.O. Box ALMOST ALL THE NEWS — PART OF THE TIME ... ONLINE ALL THE TIME AT IDYLLWILDTOWNCRIER.COM 1542, Idyllwild, CA 92549-1542 VOL. 71 NO. 35 IDYLLWILD, CA THURS., SEPTEMBER 1, 2016 Labor Day Yard Sale Local students’ Treasure Map, pg. 18 performance NEWS on state tests: Horse trapped in ravine rescued after excellent and two days, page 2 improving Idyllwild Brewpub BY JP CRUMRINE plans ‘green’ NEWS EDITOR operations, pg. 6 Last week, the California Department of Education released the results of the second California Assessment Cal Fire, Riverside County Fire Department, the U.S. Forest Ser- of Student Performance and Progress, and once again, IFPD parcel measure vice, the Riverside County Sheriff’s Department and members of the Idyllwild School’s performance was better than state- on November ballot, Horse & Animal Rescue Team coordinated the rescue and recovery of a Forest Service volunteer’s horse who slid down a steep ravine wide or districtwide averages. page 7 in the Apple Canyon area. The horse is shown above, still sedated “We did well, scoring higher than Riverside County after it was airlifted (see inset photo, left). Read more on page 2. [students] in every grade level,” said Idyllwild School PHOTOS COURTESY RIVERSIDE COUNTY ANIMAL SERVICES Principal Matt Kraemer. “And we were above Hemet On The Town district average.” At Idyllwild, grades three through eight were tested. -
Access to Communications Technology
A Access to Communications Technology ABSTRACT digital divide: the Pew Research Center reported in 2019 that 42 percent of African American adults and Early proponents of digital communications tech- 43 percent of Hispanic adults did not have a desk- nology believed that it would be a powerful tool for top or laptop computer at home, compared to only disseminating knowledge and advancing civilization. 18 percent of Caucasian adults. Individuals without While there is little dispute that the Internet has home computers must instead use smartphones or changed society radically in a relatively short period public facilities such as libraries (which restrict how of time, there are many still unable to take advantage long a patron can remain online), which severely lim- of the benefits it confers because of a lack of access. its their ability to fill out job applications and com- Whether the lack is due to economic, geographic, or plete homework effectively. demographic factors, this “digital divide” has serious There is also a marked divide between digital societal repercussions, particularly as most aspects access in highly developed nations and that which of life in the twenty-first century, including banking, is available in other parts of the world. Globally, the health care, and education, are increasingly con- International Telecommunication Union (ITU), a ducted online. specialized agency within the United Nations that deals with information and communication tech- DIGITAL DIVIDE nologies (ICTs), estimates that as many as 3 billion people living in developing countries may still be In its simplest terms, the digital divide refers to the gap unconnected by 2023. -
SMT Solving in a Nutshell
SAT and SMT Solving in a Nutshell Erika Abrah´ am´ RWTH Aachen University, Germany LuFG Theory of Hybrid Systems February 27, 2020 Erika Abrah´ am´ - SAT and SMT solving 1 / 16 What is this talk about? Satisfiability problem The satisfiability problem is the problem of deciding whether a logical formula is satisfiable. We focus on the automated solution of the satisfiability problem for first-order logic over arithmetic theories, especially using SAT and SMT solving. Erika Abrah´ am´ - SAT and SMT solving 2 / 16 CAS SAT SMT (propositional logic) (SAT modulo theories) Enumeration Computer algebra DP (resolution) systems [Davis, Putnam’60] DPLL (propagation) [Davis,Putnam,Logemann,Loveland’62] Decision procedures NP-completeness [Cook’71] for combined theories CAD Conflict-directed [Shostak’79] [Nelson, Oppen’79] backjumping Partial CAD Virtual CDCL [GRASP’97] [zChaff’04] DPLL(T) substitution Watched literals Equalities and uninterpreted Clause learning/forgetting functions Variable ordering heuristics Bit-vectors Restarts Array theory Arithmetic Decision procedures for first-order logic over arithmetic theories in mathematical logic 1940 Computer architecture development 1960 1970 1980 2000 2010 Erika Abrah´ am´ - SAT and SMT solving 3 / 16 SAT SMT (propositional logic) (SAT modulo theories) Enumeration DP (resolution) [Davis, Putnam’60] DPLL (propagation) [Davis,Putnam,Logemann,Loveland’62] Decision procedures NP-completeness [Cook’71] for combined theories Conflict-directed [Shostak’79] [Nelson, Oppen’79] backjumping CDCL [GRASP’97] [zChaff’04] -
Final Report to the University of California, Office of the President
A knowledge base to assess site suitability for ecological field stations A case study for the UC Natural Reserve System at UC Merced David M. Stoms1, Jennifer M. McDonald², and Frank W. Davis² 1Institute for Computational Earth System Science ²Donald Bren School of Environmental Science and Management, University of California, Santa Barbara, 93106 USA Final Report to the University of California, Office of the President Principal Investigator: Frank W. Davis Report Date: September 29, 2000 Table of Contents Project Summary........................................................................................................................ii Introduction ....................................................................................................................................1 Suitability Assessment .................................................................................................................4 Knowledge-base of Assessment Criteria ...................................................................................5 Assessment of Representativeness of Existing NRS Reserves..............................................8 Assessment of Suitability of Existing NRS Reserves.............................................................15 Assessment in the Stage 1 UC-Merced Assessment Region ................................................21 Assessment in the Stage 2 UC-Merced Assessment Region ................................................28 Assessment in the Stage 3 UC-Merced Assessment Region ................................................40 -
Connected Policing Framework White Paper Transforming Policing Through Technology
A Microsoft Government Connected Policing Framework White Paper Transforming Policing Through Technology Published for the APCO-APA 2008 International Policing and Summer Conference The Microsoft Connected Policing Framework The Microsoft® Connected Policing Framework is the result of work between Microsoft, specialist partners and many public safety, law enforcement and judicial organizations to build solutions, technologies and services that assist in integrated and collaborative policing to combat crime and assist with citizen safety. We reuse this collective “Know-How” to share and reuse international best practices in areas such as combating cyber crime with innovative intelligence and investigation solution architectures. IMPROVED OUTCOMES FOR CITIZEN SAFETY AND SECURITY INFORMATION CHANNELS ITERATIVE FIRE POLICE JUSTICE INTELLIGENCE INTERNAL SERVICES SECURITY CYCLE EMERGENCY RESPONSE ER CASE & RECORDS MANAGEMENT INTEGRATED JUSTICE PLAN PARTNER SOLUTIONS PARTNER INTELLIGENCE & INVESTIGATION TRANSPORT & BORDER CONTROL CRITICAL INFRASTRUCTURE PROTECTION E-POLICING (CSP, PORTAL & CRM) PROCESS APPLICATION PLATFORM BLUEPRINTS GUIDES ORGANIZATIONAL PRODUCTIVITY REFERENCES REUSABLE IP INFRASTRUCTURE CORE INFRASTRUCTURE e.g. MIF PROGRESS PRIVACY ACCESSIBILITY USABILITY SECURITY/ID STANDARDS INTEROP POLICY CITIZENSHIP INITIATIVES (CETS & DART) REVIEW Contents Introduction 4 1.0 Public Safety 5 1.1 Emergency and disaster response 5 1.2 Crime and DisorderReduction Strategies 9 1.3 E-policing 10 1.4 Microsoft Citizen Service Platform 13 2.0