Relevant bibliographies by topics / Problème de Waring

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  2. Dissertations / Theses
  3. Books
  4. Book chapters
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Academic literature on the topic 'Problème de Waring'

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Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "Problème de Waring"

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Aïssa, Houda. "Une généralisation du problème de Waring–Goldbach polynomial." Acta Arithmetica 113, no. 2 (2004): 103–30. http://dx.doi.org/10.4064/aa113-2-1.

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Gallardo, Luis. "Une variante du problème de Waring sur F2n[t." Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 327, no. 2 (July 1998): 117–21. http://dx.doi.org/10.1016/s0764-4442(98)80002-5.

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Dias, Rosa Maria, Raffael Marcos Tófoli, Taise Miranda Lopes, and Gustavo Henrique Zaia Alves. "AMAZON PEATLANDS IN PERIL: A WARNING FOR GLOBAL WARMING." Oecologia Australis 25, no. 01 (March 15, 2021): 1–6. http://dx.doi.org/10.4257/oeco.2021.2501.01.

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The Amazon rainforest has been the target of several attacks, such as the massive increase in deforestation and fire outbreaks. The Amazon biome is not only composed of forest ecosystems, but also of an important carbon stock system called Peatland, which contains ca. 1 to 8 billion tons of carbon in its plants and soil. If burned, this peculiar ecosystem is likely to release tons of greenhouse gases, which may aggravate global warming. Therefore, our objective is to alert and anticipate problems associated with deforestation and fires in Peatland that, if not contained, may difficult global warming controlling, and the achievement of goals set in the Paris Agreement (which Brazil is a signatory).
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Larsen, Michael, and Aner Shalev. "Word maps and Waring type problems." Journal of the American Mathematical Society 22, no. 2 (September 12, 2008): 437–66. http://dx.doi.org/10.1090/s0894-0347-08-00615-2.

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Larsen, Shalev, and Tiep. "Probabilistic Waring problems for finite simple groups." Annals of Mathematics 190, no. 2 (2019): 561. http://dx.doi.org/10.4007/annals.2019.190.2.3.

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Kinsella, S. M., and C. Daley. "Warning of previous anaesthetic problems." Anaesthesia 60, no. 8 (August 2005): 821. http://dx.doi.org/10.1111/j.1365-2044.2005.04306.x.

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Kislov, K. V., and V. V. Gravirov. "EARTHQUAKE EARLY WARNING FOR RAILWAYS: PERSPECTIVES, PROBLEMS AND SOLUTIONS." NAUCHNOE PRIBOROSTROENIE 27, no. 1 (February 28, 2017): 40–45. http://dx.doi.org/10.18358/np-27-1-i4045.

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Bagdonaitė, Ugnė, Liepa Butkutė, Lėja Kalvelytė, Meda Paulavičiūtė, Tėja Kalpokaitė, and Elzė Petkevičiūtė. "The Warming Arctic: Changes and Problems." Vilnius University Proceedings 10 (May 21, 2020): 62. http://dx.doi.org/10.15388/klimatokaita.2020.54.

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White, Amy. "Plato's Warning: Problems in Distance Learning." International Journal of Technology, Knowledge, and Society 2, no. 5 (2006): 149–54. http://dx.doi.org/10.18848/1832-3669/cgp/v02i05/55625.

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Osher, David, Richard Vanacker, Gale M. Morrison, Robert Gable, Kevin Dwyer, and Mary Quinn. "Warning Signs of Problems in Schools." Journal of School Violence 3, no. 2-3 (July 14, 2004): 13–37. http://dx.doi.org/10.1300/j202v03n02_03.

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Dissertations / Theses on the topic "Problème de Waring"

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Cherly, Jorgen. "Sommes d'exponentielles cubiques dans l'anneau des polynômes en une variable sur le corps à deux éléments et application au problème de Waring." Bordeaux 1, 1989. http://www.theses.fr/1989BOR10618.

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En termes generaux, dont sont exclus les symboles mathematiques, on peut decrire la these comme une contribution a l'etude du probleme de waring dans le cas de l'anneau des polynomes en une variable sur le corps fini a deux elements, que nous notons f(2,x). Le resultat principal est qu'il existe une constante absolue k telle que tout element de f(2,x) qui est une somme de cubes est somme d'au plus k cubes, avec les restrictions optimales sur les degres des termes. Le degre 3 etant superieur a la caracteristique 2, il n'est pas possible d'appliquer dans ce cas les methodes classiques. L'idee de vaughan de prolonger les arcs majeurs est introduite dans ce contexte d'application de la methode du cercle, et des techniques ad hoc sont developpees pour pallier le manque de methode de phase stationnaire
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Pecatte, Timothée. "Bornes inférieures et algorithmes de reconstruction pour des sommes de puissances affines." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEN029/document.

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Le cadre général de cette thèse est l'étude des polynômes comme objets de modèles de calcul. Cette approche permet de définir de manière précise la complexité d'évaluation d'un polynôme, puis de classifier des familles de polynômes en fonction de leur difficulté dans ce modèle. Dans cette thèse, nous nous intéressons en particulier au modèle AffPow des sommes de puissance de forme linéaire, i.e. les polynômes qui s'écrivent $f = \sum_{i = 1}^s \alpha_i \ell_i^{e_i}$, avec $\deg \ell_i = 1$. Ce modèle semble assez naturel car il étend à la fois le modèle de Waring $f = \sum \alpha_i \ell_i^d$ et le modèle du décalage creux $f = \sum \alpha_i \ell^{e_i}$, mais peu de résultats sont connus pour cette généralisation.Nous avons pu prouver des résultats structurels pour la version univarié de ce modèle, qui nous ont ensuite permis d'obtenir des bornes inférieures et des algorithmes de reconstruction, qui répondent au problème suivant : étant donné $f = \sum \alpha_i (x-a_i)^{e_i}$ par la liste de ses coefficients, retrouver les $\alpha_i, a_i, e_i$ qui apparaissent dans la décomposition optimale de $f$.Nous avons aussi étudié plus en détails la version multivarié du modèle, qui avait été laissé ouverte par nos précédents algorithmes de reconstruction, et avons obtenu plusieurs résultats lorsque le nombre de termes dans une expression optimale est relativement petit devant le nombre de variables ou devant le degré du polynôme
The general framework of this thesis is the study of polynomials as objects of models of computation. This approach allows to define precisely the evaluation complexity of a polynomial, and then to classify families of polynomials depending on their complexity. In this thesis, we focus on the study of the model of sums of affine powers, that is polynomials that can be written as $f = \sum_{i = 1}^s \alpha_i \ell_i^{e_i}$, with $\deg \ell_i = 1$.This model is quite natural, as it extends both the Waring model $f = \sum \alpha_i \ell_i^d$ , and the sparsest shift model $f = \sum \alpha_i \ell^{e_i}$, but it is still not well known.In this work, we obtained structural results for the univariate variant of this model, which allow us to obtain lower bounds and reconstruction algorithms, that solve the following problem : given $f = \sum \alpha_i (x-a_i)^{e_i}$ as a list of its coefficient, find the values of the $\alpha_i$’s, $e_i$’s and $a_i$’s in the optimal decomposition of $f$.We also studied the multivariate case and obtained several reconstruction algorithms that work whenever the number of terms in the optimal expression is small in terms of the number of variable or the degree of the polynomial
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Lambert, Victor. "Quelques problèmes additifs : bases, pseudo-puissances et ensembles k-libres." Palaiseau, Ecole polytechnique, 2015. https://theses.hal.science/tel-01174654/document.

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Habituellement étudié dans N ou Z, on s'intéresse aux bases additives dans les groupes abéliens infinis. On obtient des résultats sur les fonctions E, X et S, qui caractérisent le comportement d'une base lorsqu'on lui enlève un élément. On étudie également l'ensemble A des pseudo-puissances s-ièmes. Celles-ci forment presque sûrement une base additive d'ordre s+1. On cherche à affiner ce résultat en déterminant des compléments additifs de sA de taille minimale, c'est-à-dire des ensembles B tels que sA+B contient presque sûrement tout entier suffisamment grand. Enfin, nous montrons quelle est la taille maximale d'un ensemble k-libre dans Z/nZ. La contrainte modulaire joue ici un rôle prépondérant. Les méthodes employées sont très différentes, selon la relation arithmétique entre k et n. En particulier, nous démontrons un résultat sur des arbres combinatoires, dans l'étude du cas général
Widely studied in N or Z, we are interested in additive bases in infinite abelian groups. We get some results about the functions E, X and S, which caracterize the behaviour of a basis when we remove an element. We also study the set A of pseudo s-th powers, which is an additive basis of order s+1. We wonder what is the minimal size of an additive complement of sA, that is a set B such that sA+B contains all large enough integers. With respect to this problem, we prove quite precise theorems which are tantamount to asserting that a threshold phenomenon occurs. Finally, we establish the maximal size of a k-free set in Z/nZ. The study of this quantity strongly depends on the arithmetical relative properties of n and k. That is why we use different methods depending on cases. In particular, we show a result on combinatorial trees for the general case
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Messias, Daniel Correia Lemos de. "Multiplicidade de anéis 1-dimensionais e uma aplicação ao problema de Waring." Universidade Federal da Paraíba, 2015. http://tede.biblioteca.ufpb.br:8080/handle/tede/9271.

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Let k be an algebraically closed eld of characteristic zero and consider the polynomial ring S = k[x1, . . . , xn] endowed with the standard grading. The Waring's problem for a form F ∈ S of degree d asks about the least integer s ≥ 1 for which there exist linear forms L1, . . . , Ls ∈ S satisfying F = Σs i=1 Ldi. Such integer is called Waring rank of F. In this dissertation, we present a solution to this problem { due to Carlini-Catalisano-Geramita { in the case of monomials, as an interesting application of a theorem (due to the same authors) that establishes a lower bound for the multiplicity of (standard) graded, nitely generated, reduced, 1-dimensional k-algebras.
Seja k um corpo algebricamente fechado de caracter stica zero e considere o anel de polin^omios S = k[x1, . . . , xn] munido da gradua c~ao padr~ao. O Problema de Waring para uma forma F ∈ S de grau d questiona a respeito do menor inteiro s ≥ 1 para o qual existem formas lineares L1, . . . , Ls ∈ S satisfazendo F = Σs i=1 Ldi. Tal inteiro e denominado posto de Waring de F. Nesta disserta c~ao, apresentamos uma solu c~ao deste problema { devida a Carlini-Catalisano-Geramita { no caso de mon^omios, como uma interessante aplica c~ao de um teorema (dos mesmos autores) que estabelece uma cota inferior para a multiplicidade de k- algebras graduadas (padr~ao) nitamente geradas, reduzidas e 1-dimensionais.
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Cascioli, Chiara. "Varietà algebriche e Problema di Waring." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/17406/.

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L'elaborato inizia con una trattazione sulle varietà algebriche nello spazio proiettivo, mettendo in luce somiglianze e differenze con il caso affine. Vengono dimostrati alcuni teoremi a riguardo, e vengono introdotti i morfismi proiettivi. Viene poi posta l'attenzione su un particolare esempio di morfismo proiettivo, l'embedding di Veronese. Infine viene introdotto il Problema di Waring e viene enunciato il Teorema di Alexander - Hirschowitz tramite il quale si ha una soluzione del problema suddetto.
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Zhao, Lilu, and 赵立璐. "Some results on Waring-Goldbach type problems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B4832954X.

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This thesis consists of three topics. The first one is on quadratic Waring-Goldbach problems. The second topic is about some additive problems involving fourth powers. The last topic is to consider an average result for the divisor problem in arithmetic progressions. Chapter 1 is an introduction. In Chapter 2 the Lagrange equation with almost prime variables is studied, based on a method of Heath-Brown and Tolev. The techniques involve the circle method and the sieve method in analytic number theory. It is established that every sufficiently large integer, congruent to 4 modulo 24, can be represented as the sum of four squares of integers, each of which has at most four prime factors. In order to derive the desired result, it is important to study the asymptotic formula for a smooth counting function involving the sum of one square of a prime number and three squares of integers in arithmetic progressions. For this purpose, the square sieve of Heath-Brown and the Kloosterman refinement are employed. This is the main task of Chapter 3. Chapter 4 is devoted to the investigation on the sum of four squares of primes and K powers of two. Inspired by the work of Wooley, this problem is dealt with by applying the linear sieve instead of the four dimensional vector sieve. The theme of Chapter 5 is the three squares theorem with almost prime variables, firstly investigated by Blomer and Br?udern. A sharper result is obtained, in this chapter, by developing the three dimensional weighted sieve. In Chapter 6, the main concern is the exceptional set for the sum of fourth powers. By developing Vaughan's p-adic iteration method, some new estimations are established. The new estimations improve upon the earlier result obtained by Kawada and Wooley. As a consequence of the new estimates, it is established that every sufficiently large integer under a natural congruence condition can be expressed as a sum of six fourth powers of primes and six fourth powers of integers. Moreover, a pair of diagonal quartic forms is considered. In Chapter 7, it is shown that a pair of diagonal quartic equations with 23 variables has nonzero integral solutions under certain reasonable conditions. The purpose of Chapter 8 is to consider a Waring-Goldbach type problem involving twelve fourth powers of primes and one fourth power of a positive integer. The idea of proof is to combine Chen's switching principle and Iwaniec's linear sieve. A new result is obtained, which refines that of Ren and Tsang on this topic. In the last chapter, a distribution problem for the divisor function on arithmetic progressions is investigated. Denote by ?q,b(X) the error term in the divisor problem in the arithmetic progression b(mod q). New asymptotic formulae for the variance A(q, X) =?qb=1|?q,b(x)|2 for X1=4+E ?· q?·X1=2-E and X1=2+E ? q ·?X1-E are derived. The distinct behaviors of A(q, X) in these two ranges are unveiled.
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Oneto, Alessandro. "Power ideals, Fröberg conjecture and Waring problems." Licentiate thesis, Stockholms universitet, Matematiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-103504.

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This thesis is divided into two chapters. First, we want to study particularclasses of power ideals, with particular attention to their relation with the Fröberg conjecture on the Hilbert series of generic ideals. In the second part,we study a generalization (introduced by Fröberg, Ottaviani, and Shapiro in 2012)of the classical Waring problem for polynomials about writing homogeneouspolynomials as sums of powers. We see also how the theories of fat points andsecant varieties of Veronese varieties play a crucial role in the relation betweenthose chapters and in providing tools to nd an answer to our questions. The main results are the computation of the Hilbert series of particularclasses of power ideals, which in particular give us a proof of the Fröberg conjecturefor generic ideals generated by eight homogeneous polynomials of thesame degree in four variables, and the solution of the generalized Waring problemin the case of sums of squares in three and four variables. We also beginthe study of the generalized Waring problem for monomials.
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Oneto, Alessandro. "Waring-type problems for polynomials : Algebra meets Geometry." Doctoral thesis, Stockholms universitet, Matematiska institutionen, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-129019.

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In the present thesis we analyze different types of additive decompositions of homogeneous polynomials. These problems are usually called Waring-type problems and their story go back to the mid-19th century and, recently, they received the attention of a large community of mathematicians and engineers due to several applications. At the same time, they are related to branches of Commutative Algebra and Algebraic Geometry. The classical Waring problem investigates decompositions of homogeneous polynomials as sums of powers of linear forms. Via Apolarity Theory, the study of these decompositions for a given polynomial F is related to the study of configuration of points apolar to F, namely, configurations of points whose defining ideal is contained in the ``perp'' ideal associated to F. In particular, we analyze which kind of minimal set of points can be apolar to some given polynomial in cases with small degrees and small number of variables. This let us introduce the concept of Waring loci of homogeneous polynomials. From a geometric point of view, questions about additive decompositions of polynomials can be described in terms of secant varieties of projective varieties. In particular, we are interested in the dimensions of such varieties. By using an old result due to Terracini, we can compute these dimensions by looking at the Hilbert series of homogeneous ideal. Hilbert series are very important algebraic invariants associated to homogeneous ideals. In the case of classical Waring problem, we have to look at power ideals, i.e., ideals generated by powers of linear forms. Via Apolarity Theory, their Hilbert series are related to Hilbert series of ideals of fat points, i.e., ideals of configurations of points with some multiplicity. In this thesis, we consider some special configuration of fat points. In general, Hilbert series of ideals of fat points is a very active field of research. We explain how it is related to the famous Fröberg's conjecture about Hilbert series of generic ideals. Moreover, we use Fröberg's conjecture to deduce the dimensions of several secant varieties of particular projective varieties and, then, to deduce results regarding some particular Waring-type problems for polynomials. In this thesis, we mostly work over the complex numbers. However, we also analyze the case of classical Waring decompositions for monomials over the real numbers. In particular, we classify for which monomials the minimal length of a decomposition in sum of powers of linear forms is independent from choosing the ground field as the field of complex or real numbers.
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Cardoso, Júnior Abílio Lemos. "O anel dos vetores de Witt e o problema de Waring." reponame:Repositório Institucional da UnB, 2011. http://repositorio.unb.br/handle/10482/6725.

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Dissertação (mestrado)-Universidade de Brasília, Instituto de Ciências Exatas, Departamento de Matemática, 2006.
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Neste trabalho, fazemos um estudo geral do anel de valorização discreta completo. Construímos o anel dos vetores deWitt, denotado por W(A), com coeficientes em um anel comutativo com unidade A. Definimos W(k), onde k é um corpo perfeito de característica p, e mostramos que W(k) é um anel de valorização discreta completo não ramificado. Em seguida tomamos k algébrico sobre Fp e concluímos que W(k) é, a menos de isomorfismo, a única extensão completa não ramificada de Zp. Por fim, aplicamos o problema de Waring para W(k). _________________________________________________________________________________ ABSTRACT
In this work we study complete discrete valuation rings. We construct the ring of Witt vectors, denoted by W(A), with components in a commutative ring with unity A. We define W(k), where k is a perfect field of characteristc p, and prove that W(k), defined in this way, is a complete discrete unramified valuation ring. Afterwards, we take k algebraic over Fp and we conclude that W(k) is, up to isomorphism, the unique complete unramified extension of Zp. Finally, we apply the Waring’s problem to W(k).
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Hoffman, John W. "Some Problems in Additive Number Theory." Kent State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=kent1408298984.

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Books on the topic "Problème de Waring"

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Gershman, Janis S. Global warming: A teacher's resource. Toronto: McGraw-Hill Ryerson, 1991.

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Tukholonov, A. K. Kiotskiĭ protokol: Problemy i reshenii︠a︡ : analiticheskiĭ obzor. Novosibirsk: Gos. publichnai︠a︡ nauch.-tekhnich. biblioteka SO RAN, 2006.

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Rupesinghe, Kumar. Giving a voice to the vulnerable: The quest for a disaster early warning system. Genève: Institut Henry-Dunant, 1987.

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Super, David A. Warning: Inadequate low-income subsidy design can cause problems for health care reform. Washington, D.C: Center on Budget and Policy Priorities, 1994.

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F, Wood Eric, ed. Drought: Past problems and future scenarios. London: Earthscan, 2011.

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Without warning: Breakthrough strategies for solving the silent problems taking aim at your organization. Edina, MN: Adams Business & Professional, 2009.

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Haggis, G. H. The energy challenge: Finding solutions to the problems of global warming and future energy supply. Leicester: Matador, 2007.

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Office, General Accounting. Attack warning: Lack of system architecture contributes to major development problems : report to the Chairman, Subcommittee on Defense, Committee on Appropriations, House of Representatives. Washington, D.C: The Office, 1992.

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Partap, Uma. Warning signals from the apple valleys of the Hindu Kush-Himalayas: Productivity concerns and pollination problems. Kathmandu: International Centre for Integrated Mountain Development, 2002.

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Reznick, Bruce Arie. Sums of even powers of real linear forms. Providence, R.I: American Mathematical Society, 1992.

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Book chapters on the topic "Problème de Waring"

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Borwein, Peter. "The Easier Waring Problem." In Computational Excursions in Analysis and Number Theory, 97–101. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-0-387-21652-2_12.

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Carlini, Enrico, Huy Tài Hà, Brian Harbourne, and Adam Van Tuyl. "More on the Waring Problem." In Lecture Notes of the Unione Matematica Italiana, 127–31. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45247-6_17.

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Ayoub, Raymond. "Waring’s problem." In Mathematical Surveys and Monographs, 206–76. Providence, Rhode Island: American Mathematical Society, 2006. http://dx.doi.org/10.1090/surv/010/04.

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Karatsuba, Anatolij A., and Melvyn B. Nathanson. "Waring’s Problem." In Basic Analytic Number Theory, 160–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-58018-5_11.

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Yuan, Wang. "Waring’s Problem." In Diophantine Equations and Inequalities in Algebraic Number Fields, 87–97. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-58171-7_7.

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Duraiappah, Anantha K. "The Global Warming Problem." In Advances in Computational Economics, 9–30. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1757-9_2.

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Gray, N. F. "Defining the Problem." In Facing Up to Global Warming, 3–31. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20146-7_1.

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Carlini, Enrico, Huy Tài Hà, Brian Harbourne, and Adam Van Tuyl. "An Introduction to the Waring Problem." In Lecture Notes of the Unione Matematica Italiana, 115–20. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45247-6_15.

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Donaldson, T. H. "Recognising the Warning Signs." In How to Handle Problem Loans, 22–35. London: Palgrave Macmillan UK, 1986. http://dx.doi.org/10.1007/978-1-349-07740-3_3.

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de Graaf, Nan Dirk, and Dingeman Wiertz. "Global warming and climate change." In Societal Problems as Public Bads, 239–59. Abingdon, Oxon ; New York, NY : Routledge, 2019.: Routledge, 2019. http://dx.doi.org/10.4324/9781351063463-12.

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Conference papers on the topic "Problème de Waring"

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Fakhrhosseini, S. Maryam, Myounghoon Jeon, Pasi Lautala, and David Nelson. "An Investigation on Driver Behaviors and Eye-Movement Patterns at Grade Crossings Using a Driving Simulator." In 2015 Joint Rail Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/jrc2015-5731.

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Collisions at grade crossings are often attributed to driver failure to detect warnings, to comprehend their meaning, or to react appropriately. One of the solutions to tackling these problems is the development of various visual signs. We designed three types of visual warnings at virtual grade crossings: a gate with lights and crossbuck, a gate with a crossbuck, and a crossbuck alone. Study 1 shows that vehicle speeds of 18 participants in the period 20 seconds before approaching the crossing (critical zone) decreased in comparison to the baseline (pre-critical zone) for visual warning type 1, a gate with lights. Additionally, participants, who were exposed to a train early in the scenario, showed more defensive driving behaviors than the other case. In study 2, we considered drivers’ eye movement pattern in the pre-critical and the critical zone for 17 participants. Design applications of warnings in vehicles and on roads and further research directions are discussed.
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Tarko, Alexander Mikhailovich. "World development and global warming." In 4th International Conference “Futurity designing. Digital reality problems”. Keldysh Institute of Applied Mathematics, 2021. http://dx.doi.org/10.20948/future-2021-5.

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The article considers the processes of world development - the systemic economic crisis and the factors that strengthen or hinder it. The analysis shows that the vectors of development have shifted significantly over the past 20 years. Conventional mathematical forecasting methods are becoming ineffective. In developed countries, measures to slow global warming contribute to positive development and recovery from the crisis, in developing countries, the reduction in the use of fossil organic fuels will lead to a slowdown in the pace of development.
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Kislov, Konstantin, Fedor Vinberg, Aleksandr Kushnir, and Valentin Gravirov. "Early warning system and man-made noise." In 2012 IV International Conference "Problems of Cybernetics and Informatics" (PCI). IEEE, 2012. http://dx.doi.org/10.1109/icpci.2012.6486342.

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Serkov, Alexander, Sergei Nikitin, Vladimir Kravchenko, and Vladimir Knyazev. "Thunderstorm hazards early warning system." In 2015 Second International Scientific-Practical Conference Problems of Infocommunications Science and Technology (PIC S&T). IEEE, 2015. http://dx.doi.org/10.1109/infocommst.2015.7357294.

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Fayerweather, Andrew, Ryan Smith, David Fillman, and Hai Huang. "A Human Factors-Based ICrossing System." In 2017 Joint Rail Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/jrc2017-2283.

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Highway-rail crossing protection has perpetually been a problem for railroads and road owners. Of roughly 422,000 [1] highway-rail grade crossings in the Unites States, nearly half are passive crossings utilizing only signs and other non-active warning devices. ICrossing is a system designed to protect these passive crossings and warn motorists of approaching trains. ICrossing utilizes a system of beacons and detectors connected to a central computer. The detectors located down the track on either side of the crossing detect oncoming trains and alerts that central computer. The central computer then generates a warning message which is sent to the IBeacons that are placed on the approaches to the crossing. The beacons broadcast the generated message to the surrounding area and alert motorists to the oncoming train through a mobile application on their cell phones. This system is expected to be a cheap form of protection that can add another level of protection to many of the passive crossings located throughout the country.
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Yue Dong, Jintao Xiong, Liangchao Li, and Jianyu Yang. "Robust lane detection and tracking for lane departure warning." In 2012 International Conference on Computational Problem-Solving (ICCP). IEEE, 2012. http://dx.doi.org/10.1109/iccps.2012.6384266.

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Kai Sun, Xiaochuan Luo, and J. M. Wong. "Early warning of wide-area angular stability problems using synchrophasors." In 2012 IEEE Power & Energy Society General Meeting. New Energy Horizons - Opportunities and Challenges. IEEE, 2012. http://dx.doi.org/10.1109/pesgm.2012.6345527.

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Akkol, Mumtaz Levent. "GLOBAL CLIMATE CHANGE AND GLOBAL WARMING PROBLEM IN ENVIRONMENTAL SOCIOLOGY." In 4th SGEM International Multidisciplinary Scientific Conferences on SOCIAL SCIENCES and ARTS Proceedings. STEF92 Technology, 2017. http://dx.doi.org/10.5593/sgemsocial2017/33/s12.040.

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Brandt, Jim, Ann Gentile, Jackson Mayo, Philippe Pébay, Diana Roe, David Thompson, and Matthew Wong. "Methodologies for advance warning of compute cluster problems via statistical analysis." In the 2009 workshop. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1552526.1552528.

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Bringmann, Karl, and Marvin Kunnemann. "Quadratic Conditional Lower Bounds for String Problems and Dynamic Time Warping." In 2015 IEEE 56th Annual Symposium on Foundations of Computer Science (FOCS). IEEE, 2015. http://dx.doi.org/10.1109/focs.2015.15.

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Reports on the topic "Problème de Waring"

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Keinan, Ehud. The 18th Asian Chemical Congress and the 20th General Assembly of the FACS. AsiaChem Magazine, November 2020. http://dx.doi.org/10.51167/acm00015.

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Most global challenges, including global warming, food for everybody, the race for sustainable energy, water quality, dwindling raw materials, and health problems, are chemical problems by nature. Therefore, Humankind cannot meet these challenges without the chemical sciences and will not solve any of these problems without global cooperation. Chemists have always been doing much better than politicians in meeting these challenges, working together across borders through unique collaboration and friendship. Despite fundamentally different political systems and cultural diversity, chemists go beyond borders, find each other, share their findings, and solve problems together.
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Rosso, A. Demonstration of a Novel Synchrophasor-based Situational Awareness System: Wide Area Power System Visualization, On-line Event Replay and Early Warning of Grid Problems. Office of Scientific and Technical Information (OSTI), December 2012. http://dx.doi.org/10.2172/1158901.

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Lucas, Brian. Urban Flood Risks, Impacts, and Management in Nigeria. Institute of Development Studies (IDS), January 2021. http://dx.doi.org/10.19088/k4d.2021.018.

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This summary reviews evidence on the urban flooding impact, risk factors, and management and mitigation measures in Lagos and other cities in Nigeria. Flooding is a common problem every year in many cities across Nigeria, but the impacts of flooding are poorly documented. There is no consistent set of statistics at a national or sub-national level that can be used to compare the impacts of flooding across cities, and reports that focus on particular flood events are often incomplete. The literature notes the principal factors contributing to flood risk including uncontrolled urban growth, inadequate and poorly-maintained drainage systems, solid waste management practices, weakness in institutional capacity and coordination, and warning systems and public awareness. The evidence base for flood impacts, risks, and mitigation efforts at the city level in Nigeria is limited, and much of the information available is low quality, inconsistent, or outdated. Many rely on surveys of city residents rather than objective empirical data, and some of these surveys appear to be poorly designed. A significant number of the academic publications available have been published in non-mainstream journals without the usual level of academic peer review. Recent information is scarce, and a significant amount of the available evidence dates from 2011 and 2012, which coincides with an episode of nationwide flooding that was among the worst in Nigeria’s history.
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Akasha, Heba, Omid Ghaffarpasand, and Francis Pope. Climate Change and Air Pollution. Institute of Development Studies (IDS), January 2021. http://dx.doi.org/10.19088/k4d.2021.071.

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This rapid literature review explores the interactions between climate change and air pollution, with a focus on human health impacts. In particular, the report explores potential synergies in tackling climate change and air pollution together. The impacts and implications of the transition from a carbon-intensive economy upon air quality and consequently human health are examined. Discussing climate change without air pollution can lead to risks. For example, strategies that focus on electrification and transition to renewable energy achieve maximum health and air quality benefits compared to strategies that focus mainly on combustible renewable fuels (biofuel and biomass) with some electrification. Addressing climate change necessitates a shift towards a new low carbon era. This involves stringent and innovative changes in behaviour, technology, and policy. There are distinct benefits of considering climate change and air pollution together. Many of the processes that cause climate change also cause air pollution, and hence reductions in these processes will generate cleaner air and less global warming. Politically, the consideration of the two issues in tandem can be beneficial because of the time-inconsistency problems of climate change. Air pollution improvements can offer politicians victories, on a useful timescale, to help in their aims of reversing climate change. By coupling air pollution and air pollution agendas together, it will increase the media and political attention both environmental causes receive. Policies should involve the integration of climate change, air quality, and health benefits to create win-win situations. The success of the strategies requires financial and technical capacity building, commitment, transparency, and multidisciplinary collaboration, including governance stakeholders at multiple levels, in both a top-down and bottom-up manner.
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