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Relevant bibliographies by topics / Loop orders

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Academic literature on the topic 'Loop orders'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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Journal articles on the topic "Loop orders"

1

Jaiyéọlá, T. G., A. A. Adeniregun, and M. A. Asiru. "Finite FRUTE loops." Journal of Algebra and Its Applications 16, no. 02 (2017): 1750040. http://dx.doi.org/10.1142/s0219498817500402.

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A loop [Formula: see text] is called a FRUTE loop if it obeys the identity [Formula: see text]. Interestingly, a FRUTE loop is a Moufang loop but not necessarily an extra loop or a group (and vice versa). In this paper, algebraic properties of the left (right) regular representation set of a FRUTE loop are deduced. A FRUTE loop is shown to be universal and an [Formula: see text]-loop for all [Formula: see text]. A Moufang loop is shown to be a FRUTE loop if and only if it is nuclear cube if and only if it is an [Formula: see text]-loop. It is established that: the smallest, associative, non-co

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2

Wan, Yat-wah, and Ronald W. Wolff. "PICKING CLUMPY ORDERS ON A CAROUSEL." Probability in the Engineering and Informational Sciences 18, no. 1 (2004): 1–11. http://dx.doi.org/10.1017/s0269964804181011.

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Carousels are rotatable closed-loop storage systems for small items, where items are stored in bins along the loop. An order at a carousel consists of (say) n different items stored there. We analyze two problems: (1) minimizing the total time to fill an order (travel time) and (2) order delays as they arrive, are filled, and depart. We define clumpy orders and the nearest-end-point heuristic (NEPH) for picking them. We determine conditions for NEPH to be optimal for problem (1), and under a weak stochastic assumption, we derive the distribution of travel time. We compare NEPH with the nearest

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CHEE, WING LOON, STEPHEN M. GAGOLA, and ANDREW RAJAH. "CLASSIFICATION OF MINIMAL NONASSOCIATIVE MOUFANG LOOPS OF ORDER pq3." International Journal of Algebra and Computation 23, no. 08 (2013): 1895–908. http://dx.doi.org/10.1142/s0218196713500483.

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An open problem in the theory of Moufang loops is to classify those loops which are minimally nonassociative, that is, loops which are nonassociative but where all proper subloops are associative. A related question is to classify all integers n for which a minimally nonassociative loop exists. In [Possible orders of nonassociative Moufang loops, Comment. Math. Univ. Carolin.41(2) (2000) 237–244], O. Chein and the third author showed that a minimal nonassociative Moufang loop of order 2q3can be constructed by using a non-abelian group of order q3. In [Moufang loops of odd order pq3, J. Algebra

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Bischer, Ingolf. "Massive Fluctuations in Deconfining SU(2) Yang-Mills Thermodynamics." Advances in High Energy Physics 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/8593678.

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We review how vertex constraints inherited from the thermal ground state strongly reduce the integration support of loop four-momenta associated with massive quasiparticles in bubble diagrams constituting corrections to the free thermal quasiparticle pressure. In spite of the observed increasingly suppressing effect when increasing 2-particle-irreducible (2PI) loop order, a quantitative analysis enables us to disprove the conjecture voiced in hep-th/0609033 that the loop expansion would terminate at a finite order. This reveals the necessity to investigate exact expressions of (at least some)

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5

Anick, David. "A loop space whose homology has torsion of all orders." Pacific Journal of Mathematics 123, no. 2 (1986): 257–62. http://dx.doi.org/10.2140/pjm.1986.123.257.

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6

VALTANCOLI, P. "WILSON LOOP IN 2D NONCOMMUTATIVE GAUGE THEORIES." International Journal of Modern Physics A 25, no. 10 (2010): 2103–17. http://dx.doi.org/10.1142/s0217751x10048184.

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We reconsider the perturbative expansion of the Wilson loop in 2D noncommutative gauge theories, using an improved integration method. For the class of maximally crossed diagrams in the θ → ∞ limit we find an intriguing formula, easily generalizable to all orders in perturbation theory.

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Zha, Guo-Qiao. "Vortical configurations in mesoscopic superconducting square loop with mixed pairing orders." EPL (Europhysics Letters) 130, no. 6 (2020): 67005. http://dx.doi.org/10.1209/0295-5075/130/67005.

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Vojtschovsk�, Petr. "Random generators of given orders and the smallest simple Moufang loop." Algebra Universalis 50, no. 1 (2003): 27–33. http://dx.doi.org/10.1007/s00012-003-1805-5.

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Reisz, T. "Lattice gauge theory: Renormalization to all orders in the loop expansion." Nuclear Physics B 318, no. 2 (1989): 417–63. http://dx.doi.org/10.1016/0550-3213(89)90613-5.

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AMBJØRN, J., and YU M. MAKEENKO. "PROPERTIES OF LOOP EQUATIONS FOR THE HERMITIAN MATRIX MODEL AND FOR TWO-DIMENSIONAL QUANTUM GRAVITY." Modern Physics Letters A 05, no. 22 (1990): 1753–63. http://dx.doi.org/10.1142/s0217732390001992.

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We study the properties of the loop equations for the N × N Hermitian matrix model with arbitrary (even) interaction as well as of their continuum limit, associated with the two-dimensional quantum gravity. We apply the general procedure of iterative solution proposed recently by David. We relate the specific heat to the singular behavior of the connected correlator of two loops. We solve the continuum equation to a few lower orders in the string coupling constant, obtaining results for macroscopic loops including the case of a multicritical fixed point.

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Dissertations / Theses on the topic "Loop orders"

1

Mogull, David Gustav. "Tale of two loops : simplifying all-plus Yang-Mills amplitudes." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28764.

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Pure Yang-Mills amplitudes with all external gluons carrying positive helicity, known as all-plus amplitudes, have an especially simple structure. The tree amplitudes vanish and, up to at least two loops, the loop-level amplitudes are related to those of N = 4 super-Yang-Mills (SYM) theory. This makes all-plus amplitudes a useful testing ground for new methods of simplifing more general classes of amplitudes. In this thesis we consider three new approaches, focusing on the structure before integration. We begin with the planar (leading-colour) sector. A D-dimensional local-integrand presentati

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Filho, Antonio Calixto de Souza. "Sobre uma classificação dos anéis de inteiros, dos semigrupos finitos e dos RA-loops com a propriedade hiperbólica." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/45/45131/tde-30012009-163028/.

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Apresentamos duas construções para unidades de uma ordem em uma classe de álgebras de quatérnios que é anel de divisão: as unidades de Pell e as unidades de Gauss. Classificamos os anéis de inteiros de extensões quadráticas racionais, $R$, cujo grupo de unidades $\\U (R G)$ é hiperbólico para um certo grupo $G$ fixado. Também classificamos os semigrupos finitos $S$, tal que, para a álgebra unitária $\\Q S$ e para toda $\\Z$-ordem $\\Gamma$ de $\\Q S$, o grupo de unidades $\\U (\\Gamma)$ é hiperbólico. Nesse mesmo contexto, classificamos os {\\it RA}-loops $L$ cujo loop de unidades $\\U (\\Z L)

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Sforni, Lorenzo. "A First-Order Closed-loop Methodology for Nonlinear Optimal Control." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21429/.

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This thesis is focused on state-of-art numerical optimization methods for nonlinear (discrete-time) optimal control. These challenging problems arise when dealing with complex tasks for autonomous systems (e.g. vehicles or robots) which require the generation of a trajectory that satisfies the system dynamics and, possibly, input and state constraints due to, e.g, actuator limits or safety region of operation. A general formulation is proposed that allows the implementation of different descent optimization algorithms on optimal control problems exploiting the beneficial effects of state f

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Stener, Mikael. "Moufang Loops : General theory and visualization of non-associative Moufang loops of order 16." Thesis, Uppsala universitet, Algebra och geometri, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-295889.

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Chuai, Kun. "High order phase-locked loop design and test for time-mode signal processing applications." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95015.

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This thesis first presents a pole-zero placement algorithm for the systematic design of high-order phase-locked loops (PLL) serving as anti-imaging and anti-aliasing filters for time-mode signal processing applications. A 6th order PLL is designed and fabricated on a printed circuit board and is interfaced to a production mixed-signal tester. The correct filtering operation and large-signal transfer characteristic of the PLL are verified with an all-digital DFT solution. The digital test input is driven by a single clock, which can be programmed directly from an ATE high-speed digital pattern

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Klas, Natalie. "A literature review a closer look at ordinal positioning within the family system /." Online version, 2002. http://www.uwstout.edu/lib/thesis/2002/2002klasn.pdf.

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Lushozi, Mawande. "Rho-Meson propagator at two-loop order in the Kroll-Lee-Zumino quantum field theory." Doctoral thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25361.

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The Kroll-Lee-Zumino theory, an Abelian renormalizable quantum field theory of charged pions and a neutral ρ meson, provides a framework to compute corrections to the tree-level Vector-Meson-Dominance model. Despite a large ρππ coupling (gρππ ≈ 5), the loop suppresion factor of 1=(4π)² helps give reasonably small NLO (one-loop) corrections. When it comes to describing hadronic physics, one might say, these one-loop results achieve moderate to excellent success. Where the one-loop results show less than impressive agreement with experiment, it seems plausible that the NNLO (two-loop) correction

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Talarcek, Steven C. "An Experimental Study of Disturbance Compensation and Control for a Fractional-Order System." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1542303891784113.

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Linke, Julia M., Dmitry Yu Borin, and Stefan Odenbach. "First-order reversal curve analysis of magnetoactive elastomers." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-224278.

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The first magnetization loop and the first stress–strain cycle of magnetoactive elastomers (MAEs) in a magnetic field differ considerably from the following loops and cycles, possibly due to the internal restructuring of the magnetic filler particles and the matrix polymer chains. In the present study, the irreversible magnetization processes during the first magnetization of MAEs with different filler compositions and tensile moduli of the matrix are studied by first-order reversal curve (FORC) measurements. For MAEs with mixed magnetic NdFeB/Fe fillers the FORC distributions and magnetizatio

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Linke, Julia M., Dmitry Yu Borin, and Stefan Odenbach. "First-order reversal curve analysis of magnetoactive elastomers." Royal Society of Chemistry, 2016. https://tud.qucosa.de/id/qucosa%3A30308.

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The first magnetization loop and the first stress–strain cycle of magnetoactive elastomers (MAEs) in a magnetic field differ considerably from the following loops and cycles, possibly due to the internal restructuring of the magnetic filler particles and the matrix polymer chains. In the present study, the irreversible magnetization processes during the first magnetization of MAEs with different filler compositions and tensile moduli of the matrix are studied by first-order reversal curve (FORC) measurements. For MAEs with mixed magnetic NdFeB/Fe fillers the FORC distributions and magnetizatio

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Books on the topic "Loop orders"

1

Goodaire, Edgar G. The Moufang Loops of order less than 64. Memorial University of Newfoundland, 1997.

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2

1974-, May Sean, and Raman Maitreyi, eds. The Moufang loops of order less than 64. Nova Science Publishers, 1999.

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3

Teplinsky, Alexey. Phase Jitter in Second-Order Digital Phase-Locked Loops. University College Dublin, 1998.

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Goodaire, Edgar G. Moufang loops of order less than sixty four. Nova Science Publishers, 1999.

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5

The Obama presidency in the constitutional order: A first look. Rowman & Littlefield Publishers, 2011.

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McNamara, Carol, and Melanie M. Marlowe. The Obama presidency in the constitutional order: A first look. Rowman & Littlefield Publishers, 2011.

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A look at modern social issues. Buddha's Light Pub., 2006.

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Bregenzer, Michael P. Protective orders line by line: A detailed look at protective orders and how to change them to meet your needs / Michael P. Bregenzer. Aspatore Books, 2009.

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VanBrandwijk, Clare. An inside look: A leader's guide to the Vocations series. Saint Mary's Press, 2002.

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Julia, Frost-Davies, ed. Debtor in possession financing orders line by line: A detailed look at debtor in possession financing orders and how to change them to meet your needs. Aspatore Books, 2008.

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Book chapters on the topic "Loop orders"

1

Peruffo, Andrea, Daniele Ahmed, and Alessandro Abate. "Automated and Formal Synthesis of Neural Barrier Certificates for Dynamical Models." In Tools and Algorithms for the Construction and Analysis of Systems. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72016-2_20.

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AbstractWe introduce an automated, formal, counterexample-based approach to synthesise Barrier Certificates (BC) for the safety verification of continuous and hybrid dynamical models. The approach is underpinned by an inductive framework: this is structured as a sequential loop between a learner, which manipulates a candidate BC structured as a neural network, and a sound verifier, which either certifies the candidate’s validity or generates counter-examples to further guide the learner. We compare the approach against state-of-the-art techniques, over polynomial and non-polynomial dynamical models: the outcomes show that we can synthesise sound BCs up to two orders of magnitude faster, with in particular a stark speedup on the verification engine (up to three orders less), whilst needing a far smaller data set (up to three orders less) for the learning part. Beyond improvements over the state of the art, we further challenge the new approach on a hybrid dynamical model and on larger-dimensional models, and showcase the numerical robustness of our algorithms and codebase.

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2

Brennan, Paul V. "Higher Order Loop Filters." In Phase-Locked Loops. Macmillan Education UK, 1996. http://dx.doi.org/10.1007/978-1-349-14006-0_7.

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3

de Koster, René M. B., and Joost P. Zuidema. "Commercial returns in a mail order company: the Wehkamp case." In Managing Closed-Loop Supply Chains. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27251-8_9.

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Wähling, Heinz. "Ordered Nearfields." In Nearrings, Nearfields and K-Loops. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1481-0_5.

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King, Rudibert. "Optimal Closed-Loop Approaches in Flow Control." In Reduced-Order Modelling for Flow Control. Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0758-4_6.

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Dünnweber, Jan, and Sergei Gorlatch. "HOCs With Embedded Scheduling and Loop Parallelization." In Higher-Order Components for Grid Programming. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00841-2_5.

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Fuhrmann, Paul A., and Uwe Helmke. "Open Loop Control of Higher Order Systems." In Mathematical Control Theory II. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-21003-2_1.

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Margaris, Nikolaos I. "3. Introduction to first order PLL." In Theory of the Non-linear Analog Phase Locked Loop. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-39990-2_3.

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Yerokhin, Vladimir A. "Loop-After-Loop Contribution to the Second-Order Self-Energy in Hydrogen." In The Hydrogen Atom. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-45395-4_59.

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Margaris, Nikolaos I. "12. Introduction to third order type – II PLL." In Theory of the Non-linear Analog Phase Locked Loop. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-39990-2_12.

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Conference papers on the topic "Loop orders"

1

Ostalczyk, Piotr W. "The Time-Varying Fractional Order Difference Equations." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/vib-48374.

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In this paper we explore the linear difference equations with fractional orders being a function of time. A description of closed-loop dynamical systems described by such equations is proposed. In the numerical example a simple control strategy based on time-varying fractional orders is presented.

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2

Shakir, Huzefa, and Won-Jong Kim. "Discrete-Time Closed-Loop Model Identification of Fixed-Structure Unstable Multivariable Systems." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41834.

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This paper presents improved empirical representations of a general class of open-loop unstable systems using closed-loop system identification. A multi-axis magnetic-levitation (maglev) nanopositioning system with an extended translational travel range is used as a test bed to verify the closed-loop system-identification method proposed in this paper. A closed-loop identification technique employing the Box-Jenkins (BJ) method and a known controller structure is developed for model identification and validation. Direct and coupling transfer functions (TFs) are then derived from the experiment

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3

Liu, Jingfang, Zhen Huang, and Yanwen Li. "A New Approach for the Orders of the Bennett-Based Linkages in Mobility Analysis." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86243.

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Among the 3D single-loop overconstrained linkages, quite a number of them are combinations of Bennett linkages. Mobility on the overconstrained linkages including the Bennett-based linkages is known to be one of the difficult topics in kinematics. In the paper, a new approach based on the linear superposition principle for determining the orders of Bennett-based linkages is proposed, and the mobility of some typical Bennett-based linkages is calculated with the Modified Gru¨bler-Kutzbach criterion. In addition, geometric properties of some of the screw systems are employed to identify whether

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Coopmans, Calvin, Hadi Malek, and Edmund Spencer. "Radiation and Impedance Characteristics of a Circular Loop Antenna Driven by Fractional Order Electronics." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13227.

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Fractional calculus techniques (non-integer order systems) have been successfully applied in many fields of electronics and engineering. In this paper the effects of including fractional order electronic components on the radiated antenna pattern of a circular loop antenna is presented. A fractional order “RLC” impedance matching circuit is placed between the generator and the equivalent circuit of a loop antenna. The input impedance of the antenna and the antenna gain are controllable through varying the fractional orders of an inductive element and a capacitive element (Fractors) in the matc

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Gagnon, Zachary, and Hsueh-Chia Chang. "A Wire Loop Design for Convection-Enhanced Dielectrophoretic Bioparticle Trapping." In ASME 3rd International Conference on Microchannels and Minichannels. ASMEDC, 2005. http://dx.doi.org/10.1115/icmm2005-75132.

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Tailor-designed AC electro-osmotic (AC-EO) stagnation flows are used to convect bioparticles globally from a bulk solution to localized dielectrophoretic (DEP) traps that are aligned at flow stagnation points. The multi-scale trap, with a typical trapping time of seconds for a one cc sample, is several orders of magnitude faster than conventional DEP traps and earlier AC-EO traps with disjoint electrodes. A novel serpentine wire resistor loop capable of sustaining a high field, up to 20,000 V/cm, is fabricated to produce strong AC electro-osmotic flow with two separated stagnation lines, one a

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Machado, J. A. Tenreiro. "A Gallery of Root Locus of Fractional Systems." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-12470.

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The root locus (RL) is a classical tool for the stability analysis of integer order linear systems, but its application in the fractional counterpart poses some difficulties. Therefore, researchers have mainly preferred to adopt frequency based methods. Nevertheless, recently the RL was considered for the stability analysis of fractional systems. One first method is by tacking advantage of commensurable expressions that occur when truncating fractional orders up to a finite precision. The second method consists of searching the complex plane for solutions of the characteristic equation using a

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Patel, Viral K., and Jamal Seyed-Yagoobi. "Micro-Scale Two-Phase Flow Heat Transport Device Driven by Electrohydrodynamic Conduction Pumping." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17196.

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Micro-scale two-phase flow heat transport involves specialized devices that are used to remove large amounts of heat from small surface areas. They operate by circulating a working fluid through a heated space which causes phase change from liquid to vapor. During this process, a significant amount of heat is transported away from the heat source. Micro-scale heat transport devices are compact in size and the heat transfer coefficient can be orders of magnitude higher than in macro-scale for similar operating conditions. Thus, it is of interest to develop such devices for cooling of next-gener

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Burke, Shawn E., James E. Hubbard, and John E. Meyer. "Colocation: Design Constraints for Distributed and Discrete Transducers." In ASME 1991 Design Technical Conferences. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/detc1991-0186.

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Abstract Colocated sensors and actuators offer significant robustness and design benefits in distributed parameter vibration control. The concept of colocation is extended to distributed transducers, and combinations of distributed and discrete transducers, affixed to self-adjoint distributed plants. It is shown that sensors and actuators are colocated only when they have both physically coincident spatial apertures and their “spatial derivative orders” are equal: these constraints are expressed mathematically as an integral equation. In satisfying these constraints the resulting transducer-au

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Steuben, John C., Andrew J. Birnbaum, Athanasios P. Iliopoulos, and John G. Michopoulos. "Enriched Analytical Solutions for Additive Manufacturing Modeling and Simulation." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-86011.

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Additive Manufacturing (AM) is an increasingly widespread family of technologies for the fabrication of objects based on successive depositions of mass and energy. A strong need for modeling and simulation tools for AM exists, in order to predict thermal histories, residual stresses, microstructure, and various other aspects of the resulting components. In this paper we explore the use of analytic solutions to model the thermal aspects of AM, in an effort to achieve high computational performance and enable “in the loop” use for feedback control of AM processes. It is shown that the utility of

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do Carmo, Samaronne N., and José M. Araújo. "A Feedforward Anti-Windup Scheme for Integral Controllers Inspired on a Deformed Integral Operator." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62227.

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A well-known problem called the windup phenomenon has been comprehensively investigated by control system designers that derate the performance of closed-loop systems using controllers having integral action. In simulation-based tuning, if the windup phenomenon is ignored, even a stable design can yield an unstable system. The main cause of the windup phenomenon is control effort saturation-a very realistic and almost ubiquitously encountered constraint. Several techniques for mitigating the windup phenomenon have been proposed in literature. An exclusive class of techniques called anti-windup

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Reports on the topic "Loop orders"

1

Shand, M., S. Bryant, S. Previdi, C. Filsfils, P. Francois, and O. Bonaventure. Framework for Loop-Free Convergence Using the Ordered Forwarding Information Base (oFIB) Approach. RFC Editor, 2013. http://dx.doi.org/10.17487/rfc6976.

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O'Connell, H. B. An effective approach to VMD at one loop order and the departure from ideal mixing vector mesons. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/753325.

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Lin, Lanchao. Thermal Management Research for Power Generation. Delivery Order 0002 - Volume 2: Closed-Loop Spray Cooling of High-Power Semiconductor Lasers. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada413471.

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Karlstrom, Karl, Laura Crossey, Allyson Matthis, and Carl Bowman. Telling time at Grand Canyon National Park: 2020 update. National Park Service, 2021. http://dx.doi.org/10.36967/nrr-2285173.

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Grand Canyon National Park is all about time and timescales. Time is the currency of our daily life, of history, and of biological evolution. Grand Canyon’s beauty has inspired explorers, artists, and poets. Behind it all, Grand Canyon’s geology and sense of timelessness are among its most prominent and important resources. Grand Canyon has an exceptionally complete and well-exposed rock record of Earth’s history. It is an ideal place to gain a sense of geologic (or deep) time. A visit to the South or North rims, a hike into the canyon of any length, or a trip through the 277-mile (446-km) len

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Safeguarding through science: Center for Plant Health Science and Technology accomplishments, 2011. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, 2012. http://dx.doi.org/10.32747/2012.7204384.aphis.

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Abstract:

The Center for Plant Health Science and Technology (CPHST) provides scientific support for the regulatory decisions, policies, and operations of the Animal and Plant Health Inspection Service’s (APHIS) Plant Protection and Quarantine (PPQ) program in order to safeguard U.S. agriculture and natural resources. CPHST is responsible for ensuring that PPQ has the information, tools, and technology to make the most scientifically valid regulatory and policy decisions possible. In addition, CPHST ensures that PPQ’s operations have the most scientifically feasible and practical tools for pest exclusio

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Safeguarding through science: Center for Plant Health Science and Technology 2009 Accomplishments. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, 2011. http://dx.doi.org/10.32747/2011.7296843.aphis.

Full text

Abstract:

The Center for Plant Health Science and Technology (CPHST) provides scientific support for the regulatory decisions and operations of the Animal and Plant Health Inspection Service’s (APHIS) Plant Protection and Quarantine (PPQ) program in order to safeguard U.S. agriculture and natural resources. CPHST is responsible for ensuring that PPQ has the information, tools, and technology to make the most scientifically valid regulatory and policy decisions possible. In addition, CPHST ensures that PPQ’s operations have the most scientifically viable and practical tools for pest exclusion, detection,

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Shaping the COVID decade: addressing the long-term societal impacts of COVID-19. The British Academy, 2021. http://dx.doi.org/10.5871/bac19stf/9780856726590.001.

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Abstract:

In September 2020, the British Academy was asked by the Government Office for Science to produce an independent review to address the question: What are the long-term societal impacts of COVID-19? This short but substantial question led us to a rapid integration of evidence and an extensive consultation process. As history has shown us, the effects of a pandemic are as much social, cultural and economic as they are about medicine and health. Our aim has been to deliver an integrated view across these areas to start understanding the long-term impacts and how we address them. Our evidence revie

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