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U.S. Department ofHo1Deland.se¢urUy U.S. Citizenship and Immigration Services Administrative Appeals Office (AAO) 20 Massachusetts Ave., N.W., MS 2090 Washington, DC 20529-2090 (b)(6) U.S. Citizenship and Immigration Services DATE : APR 1 7 2015 OFFICE: CALIFORNIA SERVICE CENTER FILE: INR E: Petitioner: Benef icia ry: PETITION: Petition for a Nonim migrant Worker Pursuant to Section 101(a)(15)(H)(i)(b) of the Immigration and Nationality Act, 8 U.S.C. § 1101(a)(15)(H)(i)(b) ON BEHALF OF PETITIONER : INSTRUCTIONS: Enclosed please find the decision of the Administrative Appeals Office (AAO) in y our case. This is a n on-pre cedent decision. The AAO does not announce new constructions of law nor establish agency policy through non-precedent decisions. I f you believe the AAO incorrectly applied current law or policy to your case or if you seek to present new facts for consideration, you may file a motion to reconsider or a motion to reopen, respectively. Any motion must be filed on a Notice of Appeal or Motion (Form I-290B) within 33 days of the date of this decision. Please review the Form I-290B instructions at http://www.uscis.gov/forms for the latest information on fee, filing location, and other requirements. See also 8 C.F.R. § 103.5. Do not file a motion directly with the AAO. Ron Rose rg Chief, Administrative Appeals Office www.uscis.gov (b)(6) NON-PRECEDENTDECISION Page2 DISCUSSION: The service center director (hereinafter "director") denied the nonimmigrant visa petition, and the matter is now before the Administrative Appeals Office on appeal. -
Warren Mcculloch and the British Cyberneticians
Warren McCulloch and the British cyberneticians Article (Accepted Version) Husbands, Phil and Holland, Owen (2012) Warren McCulloch and the British cyberneticians. Interdisciplinary Science Reviews, 37 (3). pp. 237-253. ISSN 0308-0188 This version is available from Sussex Research Online: http://sro.sussex.ac.uk/id/eprint/43089/ This document is made available in accordance with publisher policies and may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher’s version. Please see the URL above for details on accessing the published version. Copyright and reuse: Sussex Research Online is a digital repository of the research output of the University. Copyright and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable, the material made available in SRO has been checked for eligibility before being made available. Copies of full text items generally can be reproduced, displayed or performed and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. http://sro.sussex.ac.uk Warren McCulloch and the British Cyberneticians1 Phil Husbands and Owen Holland Dept. Informatics, University of Sussex Abstract Warren McCulloch was a significant influence on a number of British cyberneticians, as some British pioneers in this area were on him. -
Control Theory
Control theory S. Simrock DESY, Hamburg, Germany Abstract In engineering and mathematics, control theory deals with the behaviour of dynamical systems. The desired output of a system is called the reference. When one or more output variables of a system need to follow a certain ref- erence over time, a controller manipulates the inputs to a system to obtain the desired effect on the output of the system. Rapid advances in digital system technology have radically altered the control design options. It has become routinely practicable to design very complicated digital controllers and to carry out the extensive calculations required for their design. These advances in im- plementation and design capability can be obtained at low cost because of the widespread availability of inexpensive and powerful digital processing plat- forms and high-speed analog IO devices. 1 Introduction The emphasis of this tutorial on control theory is on the design of digital controls to achieve good dy- namic response and small errors while using signals that are sampled in time and quantized in amplitude. Both transform (classical control) and state-space (modern control) methods are described and applied to illustrative examples. The transform methods emphasized are the root-locus method of Evans and fre- quency response. The state-space methods developed are the technique of pole assignment augmented by an estimator (observer) and optimal quadratic-loss control. The optimal control problems use the steady-state constant gain solution. Other topics covered are system identification and non-linear control. System identification is a general term to describe mathematical tools and algorithms that build dynamical models from measured data. -
An Introduction to Control Systems; K. Warwick
An Introduction to Control Systems; K. Warwick 362 pages; World Scientific, 1996; K. Warwick; 9810225970, 9789810225971; 1996; An Introduction to Control Systems; This significantly revised edition presents a broad introduction to Control Systems and balances new, modern methods with the more classical. It is an excellent text for use as a first course in Control Systems by undergraduate students in all branches of engineering and applied mathematics. The book contains: A comprehensive coverage of automatic control, integrating digital and computer control techniques and their implementations, the practical issues and problems in Control System design; the three-term PID controller, the most widely used controller in industry today; numerous in-chapter worked examples and end-of-chapter exercises. This second edition also includes an introductory guide to some more recent developments, namely fuzzy logic control and neural networks. file download wici.pdf The Breakthrough in Artificial Intelligence; While horror films and science fiction have repeatedly warned of robots running amok, Kevin Warwick takes the threats out of the realm of fiction and into the real world, truly; Computers; K. Warwick; 307 pages; ISBN:0252072235; 1997; March of the Machines Control Bruce O. Watkins; Introduction to control systems; UOM:39015002007683; Technology & Engineering; 625 pages; 1969 Robot Control; ISBN:0863411282; Jan 1, 1988; K. Warwick, Alan Pugh; Technology & Engineering; 238 pages; Theory and Applications Automatic control; ISBN:0750622989; Davinder K. Anand; 730 pages; Since the second edition of this classic text for students and engineers appeared in 1984, the use of computer-aided design software has become an important adjunct to the; Introduction to Control Systems; Jan 1, 1995 An Introduction to Control Systems pdf download 596 pages; Mar 18, 1993; STANFORD:36105004050907; based on the proceedings of a conference on Robotics, applied mathematics and computational aspects; K. -
Mathematical Economics - B.S
College of Mathematical Economics - B.S. Arts and Sciences The mathematical economics major offers students a degree program that combines College Requirements mathematics, statistics, and economics. In today’s increasingly complicated international I. Foreign Language (placement exam recommended) ........................................... 0-14 business world, a strong preparation in the fundamentals of both economics and II. Disciplinary Requirements mathematics is crucial to success. This degree program is designed to prepare a student a. Natural Science .............................................................................................3 to go directly into the business world with skills that are in high demand, or to go on b. Social Science (completed by Major Requirements) to graduate study in economics or finance. A degree in mathematical economics would, c. Humanities ....................................................................................................3 for example, prepare a student for the beginning of a career in operations research or III. Laboratory or Field Work........................................................................................1 actuarial science. IV. Electives ..................................................................................................................6 120 hours (minimum) College Requirement hours: ..........................................................13-27 Any student earning a Bachelor of Science (BS) degree must complete a minimum of 60 hours in natural, -
ORMS 1020: Operations Research with GNU Octave
ORMS 1020 Operations Research with GNU Octave Tommi Sottinen [email protected] www.uwasa.fi/ tsottine/or_with_octave/ ∼ October 19, 2011 Contents I Introduction and Preliminaries6 1 Selection of Optimization Problems7 1.1 Product Selection Problem.......................7 1.2 Knapsack Problem........................... 10 1.3 Portfolio Selection Problem*...................... 12 1.4 Exercises and Projects......................... 13 2 Short Introduction to Octave 14 2.1 Installing Octave............................ 14 2.2 Octave as Calculator.......................... 15 2.3 Linear Algebra with Octave...................... 18 2.4 Function and Script Files....................... 28 2.5 Octave Programming: glpk Wrapper................. 32 2.6 Exercises and Projects......................... 37 II Linear Programming 39 3 Linear Programs and Their Optima 40 3.1 Form of Linear Program........................ 40 3.2 Location of Linear Programs’ Optima................ 43 3.3 Solution Possibilities of Linear Programs............... 48 3.4 Karush–Kuhn–Tucker Conditions*.................. 53 3.5 Proofs*................................. 54 3.6 Exercises and Projects......................... 56 0.0 CONTENTS 2 4 Simplex Algorithm 58 4.1 Simplex tableaux and General Idea.................. 59 4.2 Top-Level Algorithm.......................... 62 4.3 Initialization Algorithm........................ 66 4.4 Optimality-Checking Algorithm.................... 68 4.5 Tableau Improvement Algorithm................... 71 4.6 Exercises and Projects........................ -
Priorities for the National Science Foundation
December 2020 Priorities for the National Science Foundation Founded in 1888, the American Mathematical Society (AMS) is dedicated to advancing the interests of mathematical research and scholarship and connecting the diverse global mathematical community. We do this through our book and journal publications, meetings and conferences, database of research publications1 that goes back to the early 1800s, professional services, advocacy, and awareness programs. The AMS has 30,000 individual members worldwide and supports mathemat- ical scientists at every career stage. The AMS advocates for increased and sustained funding for the National Science Foundation (NSF). The applications The NSF supports more fundamental research in the of advances in mathematical sciences—and done at colleges and theoretical science, 2 universities—than any other federal agency. A signif- including theory of icant increase in Congressional appropriations would mathe matics, occur help address the effects of years of high-quality grant on a time scale that proposals that go unfunded due to limited funding. means the investment Those unmet needs continue. A 2019 National Science Board report3 stated that in fiscal year 2018, “approxi- is often hard to justify mately $3.4 billion was requested for declined proposals in the short run. that were rated Very Good or higher in the merit review process.” This accounts for about 5440 declined proposals at the NSF. The U.S. is leaving potentially transformative scientific research unfunded, while other countries are making significant investments. In the next section we give an overview of our two priorities. The second, and final section offers a discussion of existing funding mechanisms for mathematicians. -
Operations Research for Resource Planning and -Use in Radiotherapy: a Literature Review Bruno Vieira1,2,4*, Erwin W
Vieira et al. BMC Medical Informatics and Decision Making (2016) 16:149 DOI 10.1186/s12911-016-0390-4 RESEARCH ARTICLE Open Access Operations research for resource planning and -use in radiotherapy: a literature review Bruno Vieira1,2,4*, Erwin W. Hans2,3, Corine van Vliet-Vroegindeweij1, Jeroen van de Kamer1 and Wim van Harten1,4,5 Abstract Background: The delivery of radiotherapy (RT) involves the use of rather expensive resources and multi-disciplinary staff. As the number of cancer patients receiving RT increases, timely delivery becomes increasingly difficult due to the complexities related to, among others, variable patient inflow, complex patient routing, and the joint planning of multiple resources. Operations research (OR) methods have been successfully applied to solve many logistics problems through the development of advanced analytical models for improved decision making. This paper presents the state of the art in the application of OR methods for logistics optimization in RT, at various managerial levels. Methods: A literature search was performed in six databases covering several disciplines, from the medical to the technical field. Papers included in the review were published in peer-reviewed journals from 2000 to 2015. Data extraction includes the subject of research, the OR methods used in the study, the extent of implementation according to a six-stage model and the (potential) impact of the results in practice. Results: From the 33 papers included in the review, 18 addressed problems related to patient scheduling (of which 12 focus on scheduling patients on linear accelerators), 8 focus on strategic decision making, 5 on resource capacity planning, and 2 on patient prioritization. -
Mathematical and Physical Sciences
Overview of the Directorate for Mathematical and Physical Sciences NSF Grants Conference Hosted by George Washington University Arlington, VA, October 6-7, 2014 Bogdan Mihaila, [email protected] Program Director Division of Physics US Government NSF Vision and Goals Vision » A Nation that creates and exploits new concepts in science and engineering and provides global leadership in research and education Mission » To promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense Strategic Goals » Transform the frontiers of science and engineering » Stimulate innovation and address societal needs through research & education » Excel as a Federal Science Agency NSF in a Nutshell Independent agency to support basic research & education Grant mechanism in two forms: » Unsolicited, curiosity driven (the majority of the $) » Solicited, more focused All fields of science/engineering Merit review: Intellectual Merit & Broader Impacts Discipline-based structure, some cross-disciplinary Support large facilities NSF Organization Chart Office of Diversity & National Science Board Director Inclusion (ODI) (NSB) Deputy Director Office of the General Counsel (OGC) Office of the NSB Office Office of International & Inspector General $482M (OIG) ($4.3M) Integrative Activities (OIIA) ($14.2M) Office of Legislative & Public Affairs (OLPA) Computer & Mathematical Biological Information Engineering Geosciences & Physical Sciences Science & (ENG) (GEO) Sciences (BIO) Engineering (MPS) (CISE) -
Operations Research in the Natural Resource Industry
Operations Research in the Natural Resource Industry T. Bjørndal∗ • I. Herrero∗∗ • A. Newman§ • C. Romero† • A. Weintraub‡ ∗Portsmouth Business School, University of Portsmouth, Portsmouth, United Kingdom ∗∗Department of Economy and Business, University Pablo de Olavide, Seville, Spain §Division of Economics and Business, Colorado School of Mines, Golden, CO 80401 USA †Department of Forest Economics and Management, Technical University of Madrid, Madrid, Spain ‡Industrial Engineering Department, University of Chile, Santiago, Chile [email protected] • [email protected] • [email protected] • [email protected] • [email protected] Abstract Operations research is becoming increasingly prevalent in the natural resource sector, specif- ically, in agriculture, fisheries, forestry and mining. While there are similar research questions in these areas, e.g., how to harvest and/or extract the resources and how to account for environ- mental impacts, there are also differences, e.g., the length of time associated with a growth and harvesting or extraction cycle, and whether or not the resource is renewable. Research in all four areas is at different levels of advancement in terms of the methodology currently developed and the acceptance of implementable plans and policies. In this paper, we review the most recent and seminal work in all four areas, considering modeling, algorithmic developments, and application. Keywords: operations research, optimization, simulation, stochastic modeling, literature re- view, natural resources, agriculture, fisheries, forestry, mining §Corresponding author 1 1 Introduction Operations research has played an important role in the analysis and decision making of natural resources, specifically, in agriculture, fisheries, forestry and mining, in the last 40 years (Weintraub et al., 2007). -
The Theory of Control: a Brief Overview
The Theory of Control: A Brief Overview Robin H. Pearce Abstract Control systems form a vital part of engineering, where anything that needs to be regulated or optimised can be done so with a technique that is encompassed by control theory. Since the 16th century, problems have been modelled as dynamical systems so that a mathematical control strategy could be devised and an equivalent physical strategy invented. Methods for controlling mechanical, analogue and digital systems have been invented and some are widely used. I will briefly introduce and explain many of the relevant topics considered to be part of control theory. \Control Theory" is somewhat an umbrella term, are both linear and time-invariant. These systems used to describe a wide range of analytic techniques are known as LTI systems and are extremely useful and styles which are applied to the control of a math- in control and signal processing. ematical system. Much of this theory is linked to sys- When considering the simplest, stateless LTI SISO tems theory, since many of the problems that can be system, we have that solved can also be modelled as a dynamical system. The methods involved range from classical open or y(t) = (u ? h)(t) closed loop control, up to more modern disturbance rejection and noise filtering, as well as stabilisation where h(t) is the impulse response of the system. By and fine-tuning. taking the Laplace transform of both sides, we end up with Y (s) = U(s)H(s) Systems where Y (s), U(s) and H(s) are the laplace transforms Many of the systems can be modelled as a system of of y(t), u(t) and h(t) respectively. -
Mathematical and Physical Sciences
DIRECTORATE FOR MATHEMATICAL AND $1,255,820,000 PHYSICAL SCIENCES (MPS) -$247,590,000 / -16.5% MPS Funding (Dollars in Millions) Change over FY 2018 FY 2019 FY 2020 FY 2018 Actual Actual (TBD) Request Amount Percent Astronomical Sciences (AST) $311.16 - $217.08 -$94.08 -30.2% Chemistry (CHE) 246.29 - 214.18 -32.11 -13.0% Materials Research (DMR) 337.14 - 273.78 -63.36 -18.8% Mathematical Sciences (DMS) 237.69 - 203.26 -34.43 -14.5% Physics (PHY) 310.75 - 247.50 -63.25 -20.4% Office of Multidisciplinary Activities (OMA) 60.39 - 100.02 39.63 65.6% Total $1,503.41 - $1,255.82 -$247.59 -16.5% About MPS The MPS FY 2020 Request builds on past efforts and aligns with NSF priorities for FY 2020. The programs in MPS span from individual investigator awards to large, multi-user facilities. MPS-funded science spans an enormous range as well: from the smallest objects and shortest times ever studied to distances and times that are the size and age of the universe. Individual investigators and small teams receive most awards, but centers, institutes, and facilities are all integral to MPS-funded research. The MPS FY 2020 Request is influenced by four key priorities: (1) sustaining core research programs, (2) supporting the highest priority facilities, (3) supporting early-career investigators, and (4) providing funding for targeted basic research in NSF-Wide Investments, including the NSF Big Ideas. MPS continues to support its core areas of science (astronomical sciences, chemistry, materials research, mathematical sciences, and physics) as well as thet next generation of scientists.