Academic literature on the topic 'Quasi-categories'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Quasi-categories.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Quasi-categories"
1
Harpaz, Yonatan. "Quasi-unital ∞–categories." Algebraic & Geometric Topology 15, no. 4 (September 10, 2015): 2303–81. http://dx.doi.org/10.2140/agt.2015.15.2303.
Full text
2
Zhao, Deke. "Skew categories, smash product categories and quasi-Koszul categories." Proceedings of the American Mathematical Society 139, no. 08 (August 1, 2011): 2657. http://dx.doi.org/10.1090/s0002-9939-2011-10695-6.
Full text
3
Dugger, Daniel, and David I. Spivak. "Rigidification of quasi-categories." Algebraic & Geometric Topology 11, no. 1 (January 7, 2011): 225–61. http://dx.doi.org/10.2140/agt.2011.11.225.
Full text
4
Steimle, Wolfgang. "Degeneracies in quasi-categories." Journal of Homotopy and Related Structures 13, no. 4 (February 24, 2018): 703–14. http://dx.doi.org/10.1007/s40062-018-0199-1.
Full text
5
Schneiders, Jean-Pierre. "Quasi-abelian categories and sheaves." Mémoires de la Société mathématique de France 1 (1999): 1–140. http://dx.doi.org/10.24033/msmf.389.
Full text
6
Dugger, Daniel, and David I. Spivak. "Mapping spaces in quasi-categories." Algebraic & Geometric Topology 11, no. 1 (January 7, 2011): 263–325. http://dx.doi.org/10.2140/agt.2011.11.263.
Full text
7
Joyal, A. "Quasi-categories and Kan complexes." Journal of Pure and Applied Algebra 175, no. 1-3 (November 2002): 207–22. http://dx.doi.org/10.1016/s0022-4049(02)00135-4.
Full text
8
RIEHL, EMILY. "On the structure of simplicial categories associated to quasi-categories." Mathematical Proceedings of the Cambridge Philosophical Society 150, no. 3 (March 11, 2011): 489–504. http://dx.doi.org/10.1017/s0305004111000053.
Full textAbstract:
AbstractThe homotopy coherent nerve from simplicial categories to simplicial sets and its left adjoint are important to the study of (∞, 1)-categories because they provide a means for comparing two models of their respective homotopy theories, giving a Quillen equivalence between the model structures for quasi-categories and simplicial categories. The functor also gives a cofibrant replacement for ordinary categories, regarded as trivial simplicial categories. However, the hom-spaces of the simplicial category X arising from a quasi-category X are not well understood. We show that when X is a quasi-category, all Λ21 horns in the hom-spaces of its simplicial category can be filled. We prove, unexpectedly, that for any simplicial set X, the hom-spaces of X are 3-coskeletal. We characterize the quasi-categories whose simplicial categories are locally quasi, finding explicit examples of 3-dimensional horns that cannot be filled in all other cases. Finally, we show that when X is the nerve of an ordinary category, X is isomorphic to the simplicial category obtained from the standard free simplicial resolution, showing that the two known cofibrant “simplicial thickenings” of ordinary categories coincide, and furthermore its hom-spaces are 2-coskeletal.
9
Maehara, Yuki. "Inner horns for 2-quasi-categories." Advances in Mathematics 363 (March 2020): 107003. http://dx.doi.org/10.1016/j.aim.2020.107003.
Full text
10
Schmitt, Vincent. "Enriched Categories and Quasi-uniform Spaces." Electronic Notes in Theoretical Computer Science 73 (October 2004): 165–205. http://dx.doi.org/10.1016/j.entcs.2004.08.009.
Full textDissertations / Theses on the topic "Quasi-categories"
1
Iragi, Minani. "Quasi-uniform and syntopogenous structures on categories." University of the Western Cape, 2019. http://hdl.handle.net/11394/7081.
Full textAbstract:
Philosophiae Doctor - PhDIn a category C with a proper (E; M)-factorization system for morphisms, we further investigate categorical topogenous structures and demonstrate their prominent role played in providing a uni ed approach to the theory of closure, interior and neighbourhood operators. We then introduce and study an abstract notion of C asz ar's syntopogenous structure which provides a convenient setting to investigate a quasi-uniformity on a category. We demonstrate that a quasi-uniformity is a family of categorical closure operators. In particular, it is shown that every idempotent closure operator is a base for a quasi-uniformity. This leads us to prove that for any idempotent closure operator c (interior i) on C there is at least a transitive quasi-uniformity U on C compatible with c (i). Various notions of completeness of objects and precompactness with respect to the quasi-uniformity de ned in a natural way are studied. The great relationship between quasi-uniformities and closure operators in a category inspires the investigation of categorical quasi-uniform structures induced by functors. We introduce the continuity of a C-morphism with respect to two syntopogenous structures (in particular with respect to two quasi-uniformities) and utilize it to investigate the quasiuniformities induced by pointed and copointed endofunctors. Amongst other things, it is shown that every quasi-uniformity on a re ective subcategory of C can be lifted to a coarsest quasi-uniformity on C for which every re ection morphism is continuous. The notion of continuity of functors between categories endowed with xed quasi-uniform structures is also introduced and used to describe the quasi-uniform structures induced by an M- bration and a functor having a right adjoint.
2
Barnes, Gwendolyn Elizabeth. "Nonassociative geometry in representation categories of quasi-Hopf algebras." Thesis, Heriot-Watt University, 2016. http://hdl.handle.net/10399/3294.
Full textAbstract:
It has been understood that quantum spacetime may be non-geometric in the sense that its phase space algebra is noncommutative and nonassociative. It has therefore been of interest to develop a formalism to describe differential geometry on non-geometric spaces. Many of these spaces would fi t naturally as commutative algebra objects in representation categories of triangular quasi-Hopf algebras because they arise as cochain twist deformations of classical manifolds. In this thesis we develop in a systematic fashion a description of differential geometry on commutative algebra objects internal to the representation category of an arbitrary triangular quasi-Hopf algebra. We show how to express well known geometrical concepts such as tensor fields, differential calculi, connections and curvatures in terms of internal homomorphisms using universal categorical constructions in a closed braided monoidal category to capture algebraic properties such as Leibniz rules. This internal description is an invaluable perspective for physics enabling one to construct geometrical quantities with dynamical content and con guration spaces as large as those in the corresponding classical theories. We also provide morphisms which lift connections to tensor products and tensor elds. Working in the simplest setting of trivial vector bundles we obtain explicit expressions for connections and their curvatures on noncommutative and nonassociative vector bundles. We demonstrate how to apply our formalism to the construction of a physically viable action functional for Einstein-Cartan gravity on noncommutative and nonassociative spaces as a step towards understanding the effect of nonassociative deformations of spacetime geometry on models of quantum gravity.
3
Nichols-Barrer, Joshua Paul. "On quasi-categories as a foundation for higher algebraic stacks." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39088.
Full textAbstract:
Thesis (Ph. D. )--Massachusetts Institute of Technology, Dept. of Mathematics, 2007.Includes bibliographical references (p. 139-140).
We develop the basic theory of quasi-categories (a.k.a. weak Kan complexes or ([infinity], 1)- categories as in [BV73], [Joy], [Lur06]) from first principles, i.e. without reference to model categories or other ideas from algebraic topology. Starting from the definition of a quasi-category as a simplicial set satisfying the inner horn-filling condition, we define and prove various properties of quasi-categories which are direct generalizations of categorical analogues. In particular, we look at functor quasi-categories, Hom-spaces, isomorphisms, equivalences between quasi-categories, and limits. In doing so, we employ exclusively combinatorial methods, as well as adapting an idea of Makkai's ("very subjective morphisms," what turn out in this case to be simply trivial Kan fibrations) to get a handle on various notions of equivalence. We then begin to discuss a new approach to the theory of left (or right) fibrations, wherein the quasi-category of all left fibrations over a given base S is described simply as the large simplicial set whose n-simplices consist of all left fibrations over S x [delta]n.
(cont.) We conjecture that this large simplicial set is a quasi-category, and moreover that the case S = * gives an equivalent quasi-category to the commonly-held quasi-category of spaces; we offer some steps towards proving this. Finally, assuming the conjecture true, we apply it to give simple descriptions of limits in this quasi-category, as well as a straightforward construction of a Yoneda functor for quasi-categories which we then prove is fully faithful.
by Joshua Paul Nicholas-Barrer.
Ph.D.
4
Columbus, Tobias [Verfasser], and F. [Akademischer Betreuer] Januszewski. "2-Categorical Aspects of Quasi-Categories / Tobias Columbus ; Betreuer: F. Januszewski." Karlsruhe : KIT-Bibliothek, 2018. http://d-nb.info/1166234207/34.
Full text
5
Chan, Aaron. "Yoneda algebras of quasi-hereditary algebras, and simple-minded systems of triangulated categories." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=211057.
Full textAbstract:
This thesis is divided into two parts. The rst part studies homological algebra of quasihereditary algebras, with the underlying theme being to understand properties of the Yoneda algebra of standard modules. We will rst show how homological properties of a quasi-hereditary algebra are carried over to its tensor products and wreath products. We then determine the extgroups between indecomposable standard modules of a Cubist algebra of Chuang and Turner. We will also determine generators, hence the quiver, of the Yoneda algebra of standard modules for the rhombal algebras of Peach. We also obtain a higher multiplication vanishing condition for certain rhombal algebras. The second part of this thesis studies the notion of simple-minded systems, introduced by Koenig and Liu. Such systems were designed to generate the stable module categories of artinian algebras by extension, in the same way as the sets of simple modules. We classify simple-minded systems for representation- nite self-injective algebras, and establish connections of them to various notions in combinatorics and related derived categories. We also look at the notion of simple-minded systems de ned on triangulated categories, and obtain some classi cation results using a connection between the simple-minded systems of a triangulated category and of its orbit category.
6
Henker, Hannah. "Module Categories over Quasi-Hopf Algebras and Weak Hopf Algebras and the Projectivity of Hopf Modules." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-131489.
Full text
7
Henker, Hannah [Verfasser], and Hans-Jürgen [Akademischer Betreuer] Schneider. "Module Categories over Quasi-Hopf Algebras and Weak Hopf Algebras and the Projectivity of Hopf Modules / Hannah Henker. Betreuer: Hans-Jürgen Schneider." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2011. http://d-nb.info/1015048188/34.
Full text
8
Acioly, Benedito Melo. "Fundamentação computacional da matemática intervalar." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1991. http://hdl.handle.net/10183/18234.
Full textAbstract:
A Matemática Intervalar se assenta em dois conceitos fundamentais, a propriedade da inclusão-monotonicidade de sua aritmética e uma topologia de Hausdorff definida no conjunto dos intervalos. A propriedade da inclusão-monotonicidade tem se revelado uma ferramenta útil na elaboração de algoritmos intervalares, enquanto a topologia de Hausdorff não consegue refletir as características lógicas daquela propriedade, comprometendo, desse modo, a construção de uma lógica cujo modelo seria a estrutura intervalar munida dessa topologia. Essa lógica seria necessária para fundamentação da matemática intervalar como uma teoria de algorítmos da análise real. Neste trabalho se mostra que o insucesso na construção dessa fundamentação se deve a incompatibilidade entre a propriedade da inclusão-monotonicidade e a topologia de Hausdorff. A partir dessa constatação se descarta essa topologia e define-se uma outra topologia - a topologia de Scott - que é compatível com essa propriedade, no sentido de que todo resultado obtido usando-se a lógica, isto é, a propriedade da inclusão-monotonicidade, obtém-se também usando-se a ferramenta topológica e reciprocamente. A teoria resultante da substituição da topologia de Hausdorff pela topologia de Scott tem duas características fundamentais. A Análise Funcional Intervalar resultante possui a maioria das propriedades interessantes da Análise Real, suprimindo, assim, as deficiências da Análise Intervalar anterior. A elaboração da propriedade da inclusão-monotoniciadade permite construir uma lógica geométrica e uma teoria lambda cujo modelo é essa nova matemática intervalar. Além disso, a partir dessa lógica e da teoria lambda se elabora uma teoria construtiva, como a teoria dos tipos de Martin-Löf, que permite se raciocinar com programas dessa matemática. Isso significa a possibilidade de se fazer correção automática de programas da matemática intervalar. Essa nova abordagem da matemática intervalar é desenvolvida pressupondo, apenas, o conceito de número racional, além, é claro, da linguagem da teoria dos conjuntos. Desse modo é construído o sistema intervalar de um modo análogo ao sistema real. Para isso é generalizado o conceito de corte de Dedekind, resultando dessa construção um sistema ordenado denominado de quasi-corpo, em contraste com o números reais cujo sistema é algébrico, o corpo dos números reais. Assim, no sistema intervalar a ordem é um conceito intrínseco ao sistema, diferentemente do sistema de números reais cuja a ordem não faz parte da álgebra do sistema. A lógica dessa nova matemática intervalar é uma lógica categórica. Isto significa que todo resultado obtido para domínios básicos se aplica para o produto cartesiano, união disjunta, o espaço de funções, etc., desses domínios. Isto simplifica consideravelmente a teoria. Um exemplo dessa simplificação é a definição de derivada nessa nova matemática intervalar, conceito ainda não bem definido na teoria intervalar clássica.The Interval Mathematics is based on two fundamental concepts, the inclusion-monotonicity of its arithmetics and a Hausdorff topology defined on the interval set. The property of inclusion-monotonicity has risen as an useful tool for elaboration of interval algorithms. In contrast, because the Hausdorff topology does not reflect the logical features of that property, the interval mathematics did not, permit the elaboration of a logic whose model is this interval mathematics with that topology. This logic should be necessary to the foundation of the interval mathematics as a Real Analysis Theory of Algorithms. This thesis shows that the theory of algorithms refered above was not possible because of the incompatibility between the property of inclusion-monotonicity and the Hausdorff topology. By knowing the shortcoming of this topology, the next step is to set it aside and to define a new topology - the Scott topology - compatible with the refered property in the sense that every result, obtained via the logic is also obtainable via the topology and vice-versa. After changing the topology the resulting theory has two basic features. The Interval Functional Analysis has got the most, interesting properties belonging to Real Analysis, supressing the shortcomings of previous interval analysis. The elaboration of the inclusion-monotonicity property allows one to construct a geometric logic and a lambda theory whose model is this new interval mathematics. From this logic and from the lambda theory a constructive theory is then elaborated, similar to Martin-Löf type theory, being possible then to reason about programs of this new interval mathematics. This means the possibility of automatically checking the correctness of programs of interval mathematics. This new approach assumes only the concept, of rational numbers beyond, of course, the set theory language. It is constructed an interval system similar to the real system. A general notion of the concept of Dedekind cut was necessary to reach that. The resulting construction is an ordered system which will be called quasi-field, in opposition to the real numbers system which is algebraic. Thus, in the interval system the order is an intrinsic concept, unlike the real numbers sistems whose order does not belong to the algebraic system. The logic of this new interval mathematics is a categorical logic. This means that, every result got for basic domains applies also to cartesian product, disjoint union, function spaces, etc., of these domains. This simplifies considerably the new theory. An example of this simplication is given by the definition of derivative, a concept not, derived by the classical interval theory.
9
Dimuro, Gracaliz Pereira. "Domínios intervalares da matemática computacional." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1991. http://hdl.handle.net/10183/24890.
Full textAbstract:
Fundamentada a importância da utilização da Teoria dos Intervalos em computação científica, é realizada uma revisão da Teoria Clássica dos Intervalos, com críticas sobre as incompatibilidades encontradas como motivos de diversas dificuldades para desenvolvimento da própria teoria e, consequentemente, das Técnicas Intervalares. É desenvolvida uma nova abordagem para a Teoria dos Intervalos de acordo com a Teoria dos Domínios e a proposta de [ACI 89], obtendo-se os Domínios Intervalares da Matemática Computacional. Introduz-se uma topologia (Topologia de Scott) compatível com a idéia de aproximação, gerando uma ordem de informação, isto é, para quaisquer intervalos x e y, diz-se que se x -c y , então y fornece mais (no mínimo tanto quanto) informação, sobre um real r, do que x. Prova-se que esta ordem de informação induz uma topologia To (topologia de Scott) , que é mais adequada para uma teoria computacional que a topologia da Hausdorff introduzida por Moore [MOO 66]. Cada número real r é aproximado por intervalos de extremos racionais, os intervalos de informação, que constituem o espaço de informação II(Q), superando assim a regressão infinita da abordagem clássica. Pode-se dizer que todo real r é o supremo de uma cadeia de intervalos com extremos racionais “encaixados”. Assim, os reais são os elementos totais de um domínio contínuo, chamado de Domínio dos Intervalos Reais Parciais, cuja base é o espaço de informação II (Q). Cada função contínua da Análise Real é o limite de sequências de funções contínuas entre elementos da base do domínio. Toda função contínua nestes domínios constitui uma função monotônica na base e é completamente representada em termos finitos. É introduzida uma quasi-métrica que induz uma topologia compatível com esta abordagem e provê as propriedades quantitativas, além de possibilitar a utilização da noção de sequências, limites etc, sem que se precise recorrer a conceitos mais complexos. Desenvolvem-se uma aritmética, critérios de aproximação e os conceito de intervalo ponto médio, intervalo valor absoluto e intervalo diâmetro, conceitos compatíveis com esta abordagem. São acrescentadas as operações de união, interseção e as unárias. Apresenta-se um amplo estudo sobre a função intervalar e a inclusão de imagens de funções, com ênfase na obtenção de uma extensão intervalar natural contínua. Esta é uma abordagem de lógica construtiva e computacional.The importance of Interval Theory for scientific computation is emphasized. A review of the Classical Theory is macle, including a discussion about some incompatibities that cause problems in developing interval algorithms. A new approach to the Interval Theory is developed in the light of the Theory of Domains and according to the ideas by Acióly [ACI 89], getting the Interval Domains of Computational Mathematics. It is introduced a topology (Scott Topology), which is associated with the idea of approximation, generating an information order, that is, for any intervals x and y one says that if x -c y, then "the information given by y is better or at least equal than the one given by x". One proves that this information order induces a To topology (Scott's topology) which is more suitable for a computation theory than that of Hausdorff introduced by Moore [MOO 66]. This approach has the advantage of being both of constructive logic and computational. Each real number is approximated by intervals with rational bounds, named information intervals of the Information Space II(Q), eliminating the infinite regression found in the classical approach. One can say that every real a is the supreme of a chain of rational intervals. Then, the real numbers are the total elements of a continuous domain, named the Domain of the Partial Real Intervals, whose basis is the information space II (Q). Each continuous function in the Real Analysis is the limit of sequences of continuous functions among any elements which belong to the base of the domain. In these same domains, each continuous function is monotonic on the base and it is completely represented by finite terms. It is introduced a quasi-metric that leads to a compatible topology and supplies the quantitative properties. An arithmetic, some approximation criteria, the concepts of mean point interval, absolute value interval and width interval are developed and set operations are added. The ideas of interval functions and the inclusion of ranges of functions are also presented, and a continuous natural interval extension is obtained.
10
Silva, Willian Ribeiro Valencia da. "Generalised enriched categories: exponentiation and injectivity." Doctoral thesis, 2019. http://hdl.handle.net/10316/88801.
Full textAbstract:
Tese no âmbito do Programa Interuniversitário de Doutoramento em Matemática e apresentada ao Departamento de Matemática da Faculdade de Ciências e Tecnologia da Universidade de Coimbra.Dentre as soluções clássicas para o problema da categoria Top dos espaços topológicos e aplicações contínuas não ser cartesiana fechada, nesta tese estamos interessados em espaços compactamente gerados, espaços equilógicos, e espaços quasi-topológicos; trabalhando com categorias enriquecidas generalizadas, que permitem um tratamento unificado de uma gama de categorias da Topologia e da Análise (e.g., espaços ordenados, métricos, topológicos e de aproximação), generalizamos estes três conceitos de Top para (T,V)-Cat. Para tal finalidade, começamos por estudar a relação entre os (T,V)-espaços injectivos e exponenciáveis, e por provar que (T,V)-Cat é uma categoria fracamente localmente cartesiana fechada. Em seguida, introduzimos a categoria (T,V)-Equ dos (T,V)-espaços equilógicos e seus morfismos, que provamos ser uma categoria cartesiana fechada. Ademais, estudamos uma relação generalizada entre os (T,V)-espaços equilógicos e os completamentos regular e exato de (T,V)-Cat, culminando no fato de que (T,V)-Equ é um quasitopos. Por fim, transportamos os conceitos de espaços C -gerados e espaços quasi-topológicos para (T,V)-Cat. Provamos que os (T,V)-espaços C -gerados formam uma subcategoria plena coreflectiva cartesiana fechada de (T,V)-Cat; exemplos de tais espaços incluem (T,V)-espaços compactamente gerados e (T,V)-espaços de Alexandroff. Para os últimos, fazemos algumas considerações que direcionam a uma generalização da equivalência entre os espaços topológicos de Alexandroff e os conjuntos ordenados. Quanto aos quasi-(T,V)-espaços, eles formam a categoria Qs(T,V)-Cat, a qual provamos ser cartesiana fechada e topológica sobre a categoria Set dos conjuntos e aplicações. Generalizamos também para (T,V)-Cat uma relação interessante entre espaços quasi-topológicos e espaços compactamente gerados.
Among the classical solutions to the problem of non-cartesian closedness of the category Top of topological spaces and continuous maps, in this thesis we are interested in compactly generated spaces, equilogical spaces, and quasi-topological spaces; working with generalised enriched categories, which allow for a unified treatment of a range of categories from Topology and Analysis (e.g., ordered, metric, topological, and approach spaces), we generalise these three concepts from Top to (T,V)-Cat. In order to do so, we start by studying the relation between injective and exponentiable (T,V)- spaces, and by proving that (T,V)-Cat is a weakly locally cartesian closed category. Then we introduce the category (T,V)-Equ of equilogical (T,V)-spaces and its morphisms, which we prove to be a cartesian closed category. Moreover, we study a generalised relation between equilogical (T,V)-spaces and the regular and exact completions of (T,V)-Cat, culminating in the fact that (T,V)-Equ is a quasitopos. We finish by carrying the concepts of C -generated spaces and quasi-topological spaces into (T,V)-Cat. We prove that C -generated (T,V)-spaces form a fully coreflective cartesian closed subcategory of (T,V)-Cat; examples of such spaces include compactly generated (T,V)-spaces and Alexandroff (T,V)-spaces. For the latter, we make some discussions towards a generalisation of the equivalence between Alexandroff topological spaces and ordered sets. Concerning quasi-(T,V)- spaces, they form the category Qs(T,V)-Cat which we prove to be cartesian closed and topological over the category Set of sets and maps. We also generalise to (T,V)-Cat an interesting relation between quasi-topological spaces and compactly generated spaces.
Books on the topic "Quasi-categories"
1
Dlab, Vlastimil. Quasi-hereditary algebras. Ottawa, Ont., Canada: Dept. of Mathematics and Statistics, Carleton University, 1988.
Find full text
2
Polcino, Milies César, ed. Groups, algebras and applications: XVIII Latin American Algebra Colloquium, August 3-8, 2009, São Pedro, SP, Brazil. Providence, R.I: American Mathematical Society, 2011.
Find full text
3
Schneiders, Jean-Pierre. Quasi-Abelian Categories and Sheaves. Societe Mathematique De France, 1999.
Find full text
4
Hrushovski, Ehud, and François Loeser. An equivalence of categories. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691161686.003.0013.
Full textAbstract:
This chapter deduces from Theorem 11.1.1 an equivalence of categories between a certain homotopy category of definable subsets of quasi-projective varieties over a given valued field and a suitable homotopy category of definable spaces over the o-minimal Γ. The chapter introduces three categories that can be viewed as ind-pro definable and admit natural functors to the category TOP of topological spaces with continuous maps. The discussion is often limited to the subcategory consisting of A-definable objects and morphisms. The morphisms are factored out by (strong) homotopy equivalence. The chapter presents the proof of the equivalence of categories before concluding with remarks on homotopies over imaginary base sets.
5
Hugh, Beale, Bridge Michael, Gullifer Louise, and Lomnicka Eva. Part II Description of Interests, 7 Financing Devices Involving the Transfer or Retention of Title. Oxford University Press, 2018. http://dx.doi.org/10.1093/law/9780198795568.003.0007.
Full textAbstract:
This chapter discusses financing devices that, although performing an equivalent function to security interests, are not generally considered ‘security’ under English law. These devices fall into two main categories: those involving the retention and those involving the transfer of title. Such financing devices are often called ‘quasi-security’ interests, to acknowledge that their economic function, in ‘securing’ the performance of obligations, is the same as that of true ‘security’. The chapter also considers the characteristics that they normally display, dividing up the discussion by the nature of the collateral involved: goods, investment products, and receivables.
6
Kageyama, Taro, Peter E. Hook, and Prashant Pardeshi, eds. Verb-Verb Complexes in Asian Languages. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198759508.001.0001.
Full textAbstract:
This volume presents a detailed survey of the systems of verb-verb complexes in Asian languages from both a synchronic and a diachronic perspective. Many Asian languages share, to a greater or lesser extent, a unique class of compound verbs each consisting of a main verb and a quasi-auxiliary verb known as a ‘vector’ or ‘explicator’. These quasi-auxiliary verbs exhibit unique grammatical behavior that suggests that they have an intermediate status between full lexical verbs and wholly reduced auxiliaries. They are also semantically unique, in that when they are combined with main verbs, they can convey a rich variety of functional meanings beyond the traditional notions of tense, aspect, and modality, such as manner and intensity of action, benefaction for speaker or hearer, and polite or derogatory styles in speech. In this book, leading specialists in a range of Asian languages offer an in-depth analysis of the longstanding questions relating to the diachrony and geographical distribution of verb-verb complexes. The findings have implications for the general understanding of the grammaticalization of verb categories, complex predicate formation, aktionsart and event semantics, the morphology-syntax-semantics interface, areal linguistics, and typology.
7
Kurebito, Megumi. Koryak. Edited by Michael Fortescue, Marianne Mithun, and Nicholas Evans. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199683208.013.46.
Full textAbstract:
The present chapter focuses on verbal polysynthesis in Koryak, a member of the Chukotko-Kamchatkan language family and aims to show how a polysynthetic holophrase is formed in this language. The result of the examination reveals that the language owes the major driving force in promoting verbal polysynthesis to incorporation, especially noun incorporation (NI). In NI, polysynthetic incorporative stems are derived through NP incorporation, multiple nominal incorporation, double P-argument incorporation (though not always accepted), and adverbial incorporation. Denominal verbal affixes which express concrete verbal meanings such as ‘make’, ‘go gathering’, and ‘look for’ can also derive polysynthetic holophrases by (quasi)-incorporating one or more modifiers and adverbial stems. The polysynthetic stem thus formed is enclosed and shaped into a polysynthetic holophrase by verbal inflectional categories such as aspect, mood, and agreement in person and number with the core argument.
8
Huybrechts, D. Derived Categories: A Quick Tour. Oxford University Press, 2007. http://dx.doi.org/10.1093/acprof:oso/9780199296866.003.0002.
Full textAbstract:
This chapter briefly outlines the main steps in the construction of the derived category of an arbitrary abelian category. The homotopy category of complexes is considered as an intermediate step, which is then localized with respect to quasi-isomorphisms. Left and right derived functors are explained in general, and particular examples are studied in more detail. Spectral sequences are treated in a separate section.
9
Wiggins, Osborne P., and Michael Alan Schwartz. Phenomenology and psychopathology: in search of a method. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199609253.003.0002.
Full textAbstract:
We outline a phenomenological method for a science of psychopathology. Method is conceived as the mode of experiencing an object which can deliver the best direct evidence of the object available. Hence a main aim of our chapter is to sketch a method for the science of psychopathology that can establish this best evidence for claims about abnormal mental realities. The best source of evidentially grounded claims regarding psychopathological experiences is located in the clinical interview and dialogue. The method of hermeneutics adds needed detail. Our concept of hermeneutics goes back to Dilthey and up to Ricoeur. The need for the psychiatrist to “re-live” or “re-experience” of the patient’s experiences is stressed. We relate this to the phenomenological concept of quasi-experience or imaginative experience. Finally we discuss how conceptual generalization and the formation of scientific categories can follow from this phenomenological procedure.
10
Rodenhäuser, Tilman. Organizing Rebellion. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198821946.001.0001.
Full textAbstract:
This book identifies the degree of organization required from non-state armed groups (i) to become party to an armed conflict and thereby bound by applicable international humanitarian law; (ii) to have possible human rights obligations; and (iii) to create a context in which international crimes can be committed. Part I identifies three principal criteria that any party to a non-international armed conflict—including decentrally organized armed groups, transnational groups, or cyber groups—must meet: it must be a collective entity with sufficient capabilities to engage in hostilities and the ability to ensure respect for basic humanitarian norms. Part II conceptualizes contemporary debate and international practice on the question of whether armed groups have human rights obligations. It suggests that the sources and scope of potential human rights obligations of armed groups are understood best on a spectrum, with consideration given to three categories: groups exercising quasi-governmental authority; groups exercising de facto control over territory and population; and groups exercising no territorial control. Part III examines the requisite degree of organization of armed groups to create contexts in which crimes against humanity or genocide can be committed. It argues that the degree of power and organization of groups behind these crimes depends on whether the group instigates or actually commits the crimes. In sum, this book shows that the requisite degree of organization of armed groups to have obligations under different fields of international law cannot be determined in the abstract. It depends on the specificities of each field of law and the circumstances of each case.
Book chapters on the topic "Quasi-categories"
1
Botha, Suzette G. "Quasi-Ideals and Bi-Ideals in Categories." In Nearrings, Nearfields and K-Loops, 219–24. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1481-0_13.
Full text
2
Torii, Takeshi. "On Quasi-Categories of Comodules and Landweber Exactness." In Bousfield Classes and Ohkawa's Theorem, 325–80. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1588-0_11.
Full text
3
Minati, Gianfranco, and Eliano Pessa. "Prospective New Conceptual Categories." In From Collective Beings to Quasi-Systems, 25–62. Boston, MA: Springer US, 2018. http://dx.doi.org/10.1007/978-1-4939-7581-5_2.
Full text
4
Birks, Peter. "The Quasi Categories." In The Roman Law of Obligations, 248–63. Oxford University Press, 2014. http://dx.doi.org/10.1093/acprof:oso/9780198719274.003.0011.
Full text
5
"Quasi-Hopf Bimodule Categories." In Quasi-Hopf Algebras, 225–52. Cambridge University Press, 2019. http://dx.doi.org/10.1017/9781108582780.007.
Full text
6
"Monoidal and Braided Categories." In Quasi-Hopf Algebras, 1–54. Cambridge University Press, 2019. http://dx.doi.org/10.1017/9781108582780.002.
Full text
7
"Yetter–Drinfeld Module Categories." In Quasi-Hopf Algebras, 305–52. Cambridge University Press, 2019. http://dx.doi.org/10.1017/9781108582780.009.
Full text
8
"Algebras and Coalgebras in Monoidal Categories." In Quasi-Hopf Algebras, 55–102. Cambridge University Press, 2019. http://dx.doi.org/10.1017/9781108582780.003.
Full text
9
Hill, Christopher S. "Percepts and Concepts." In Perceptual Experience, 189—C8.P85. Oxford University PressOxford, 2022. http://dx.doi.org/10.1093/oso/9780192867766.003.0008.
Full textAbstract:
Abstract Chapter 8 describes a number of essential differences separating perceptual experiences from high-level cognitive phenomena, and, in particular, from concepts and propositional attitudes. The chapter embraces the widely accepted view that concepts are akin to words in that they have reference and belong to logical categories, along with the companion view that the propositions that are the objects of attitudes like belief and desire are like sentences in that they have truth conditions and logical forms. In sum, concepts and propositions are quasi-linguistic. Not so for perceptual representations. The chapter argues that perceptual experiences are metaphysically independent of conceptualization. It also maintains that, on the one hand, perceptual representations lack the logical properties that are essential to concepts and propositions, and that, on the other hand, the former representations differ from the latter in that they are often isomorphic to the domains and individual entities that they represent.
10
Balibar, Étienne. "On Universalism." In On Universals, translated by Joshua David Jordan, 84–95. Fordham University Press, 2020. http://dx.doi.org/10.5422/fordham/9780823288564.003.0004.
Full textAbstract:
This chapter explores ideas and arguments with Alain Badiou on the theme of universalism and universality. It argues that a philosophical discourse on the categories of the universal, universality, and universalism—their meaning and use—must be a critical discourse. The chapter then adopts a critical and dialectic point of view in order to elucidate a discourse of universalism that allows one to incorporate its contradictory conditions, the contradictions that always already affect its conditions. It indicates three orientations which are particularly significant from this point of view. The first has to do with the dilemmas or dichotomized utterances of universalism in philosophy; the second concerns the intrinsic ambivalence of the institution of the universal, or the universal as “truth”; and the third deals with what can be called, in quasi-Weberian terms, the responsibility (or responsibilities) involved in a politics of the universal that many support.
Conference papers on the topic "Quasi-categories"
1
Wallner, Stefan, Jose Antonio Garcia Molina, Gustavo Lopez Risueno, Jorg Hahn, Jean Jeaques Floch, Francis Soualle, Till Schmitt, et al. "Novel Concepts on GNSS Signal Design serving Emerging GNSS User Categories: Quasi-Pilot Signal." In 2020 European Navigation Conference (ENC). IEEE, 2020. http://dx.doi.org/10.23919/enc48637.2020.9317352.
Full text
2
Roy, Rajkumar, Ian C. Parmee, and Graham Purchase. "Sensitivity Analysis of Engineering Designs Using Taguchi’s Methodology." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/dac-1455.
Full textAbstract:
Abstract The sensitivity analysis of engineering designs has been performed following Taguchi’s methodology. The technique is reliable and computationally inexpensive, thus suitable for real life problems. The design problem involves a mathematical model of a gas turbine blade cooling hole system. The model includes twelve input variables and three non linear constraints. The orthogonal matrix as suggested by Taguchi and the tolerances on the input design variables are used to define a neighbourhood of a design solution. Three different categories of sensitivity are defined, such as, design solution sensitivity, design variable sensitivity and constraint sensitivity. The sensitivities are defined within the neighbourhood of a design solution. The use of the orthogonal matrix allows an approximate sensitivity analysis without resorting to exhaustive local search. Taguchi’s signal to noise ratio is used to define the design solution sensitivity. Methodology involved in the estimation of factor effects in an experiment is used to calculate the design variable sensitivity. The extents of constraint satisfaction within the neighbourhood of a design solution defines different categories of constraint sensitivity, such as, constraint satisfied, statistically active constraint, quasi-active constraint, peak-active constraint and constraint not satisfied. The paper briefly discusses Taguchi’s methodology and then defines the different sensitivities. Results from the sensitivity analysis of the real life turbine blade cooling hole system are presented and discussed.
3
Ruiz Romera, D., M. Liebeherr, O¨ Gu¨ngo¨r, D. Quidort, and S. Ehlers. "Development of X100 on Coil and First Weldability Assessment." In 2010 8th International Pipeline Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ipc2010-31636.
Full textAbstract:
The development of X100, 13mm thick, on coil at ArcelorMittal is on schedule. Different steel compositions grouped in different categories A, C, D with various alloying contents and carbon equivalents have been tested by means of appropriate laboratory simulations. From these simulations, two different concepts have been developed, able to fulfil X100 strength properties in combination with excellent low temperature toughness. These two concepts are suited for low or high coiling temperatures (Type C and D respectively). The influence of the different TMCP (Thermomechanical controlled processing) parameters on the strength-toughness properties is shown and explained by the various microstructures. The low coiling temperature concept is based on a fine granular bainite microstructure avoiding the presence of M/A constituent and providing an excellent combination of strength and toughness. The high coiling temperature concept exhibits a quasi-polygonal ferrite microstructure with M/A as second phase. The M/A constituent seem to strengthen the steel without impairing the toughness while the quasi-polygonal ferritic matrix retains excellent toughness. A first assessment of the weldability has been done through the simulation and analysis of the heat affected zone for different cooling times between 800 and 50°C. The concept with a lower carbon equivalent (Type D) gives excellent weldability results.
4
Smirnova, L. M., S. G. Urazova, F. A. Mindubayeva, L. V. Kovalenko, and N. M. Kharissova. "The experience of organizing inclusive education of children and persons limited health by means of physical culture." In VIII Vserossijskaja konferencija s mezhdunarodnym uchastiem «Mediko-fiziologicheskie problemy jekologii cheloveka». Publishing center of Ulyanovsk State University, 2021. http://dx.doi.org/10.34014/mpphe.2021-183-186.
Full textAbstract:
The experience of the volunteer movement Kostroma State University´ (KSU) students in the rehabilitation center for the disabled of all ages and categories (RCD) and physical education classes in the Karaganda Medical University (MUK) ´ physical health center is presented. It has been established that in order to adapt children and persons with disabilities (limited health) to social life, it is necessary to involve them in the optimal level of physical activity, which entails the restoration of mental and vegetative functions of the body. There is a need to unite healthy persons and persons with disabilities into one group, as a result of which persons with disabilities acquire a sense of confidence, openness and gullibility towards the people around them and the coaching staff.
Key words: healthy lifestyle (HLS), inclusion, adaptive physical education, disabilities, persons with limited health, inclusive competences, quasi-professional activity.
5
Koulocheris, Dimitris, Vasilis Dertimanis, and Constantinos Spentzas. "Optimum Positioning of Tank Mountings in a Fixed Tank Vehicle." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58414.
Full textAbstract:
This paper aims at optimizing some critical characteristics of a fixed-tank biaxial vehicle, with respect to the lateral performance of the installed tank. For the description of the fixed-tank vehicle, a linear half car model with six degrees of freedom is implemented, subject to many types of road irregularities. The relative position of the tank mountings, with respect to the vehicle frame, as well as their corresponding stiffness and damping characteristics are optimized, such that the maximum values of vertical and rotational acceleration of the tank are minimized, under the geometrical constraints of the vehicle. For the optimization tasks, the BFGS quasi-Newton and the (μ+λ)-Evolution Strategy methods have been implemented. The former outperforms conventional Newton’s methods, due to the secant approximation of the Hessian, while the latter has been shown to perform better in many engineering applications, compared to other categories of EA.
6
Abraham, J. P., E. M. Sparrow, J. C. K. Tong, and W. J. Minkowycz. "Intermittent Flow Modeling: Part 2—Time-Varying Flows and Flows in Variable Area Ducts." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22696.
Full textAbstract:
The all-flow-regime model of fluid flow, previously applied in [1] to flows with axially and temporally uniform Reynolds numbers, has been implemented here for flows in which the Reynolds number may either vary with time or along the length of a pipe. In the former situation, the timewise variations were driven by a harmonically oscillating inlet flow. These oscillations created a succession of flow-regime transitions encompassing purely laminar and purely turbulent flows as well as laminarizing and turbulentizing flows where intermittency prevailed. The period of the oscillations was increased parametrically until the quasi-steady regime was attained. The predicted quasi-steady friction factors were found to be in excellent agreement with those from a simple model under which the flow is assumed to pass through a sequence of instantaneous steady states. In the second category of non-constant-Reynolds-number flows, axial variations of a steady flow were created by means of a finite-length conical enlargement which connected a pair of pipes of constant but different diameters. The presence of the cross-sectional enlargement gives rise to a reduction of the Reynolds number that is proportional to the ratio of the diameters of the upstream and the downstream pipes. Depending on the magnitude of the upstream inlet Reynolds number, the downstream fully developed flow could variously be laminar, intermittent, or turbulent. The presence or absence of flow separation in the conical enlargement had a direct effect on the laminarization process. For both categories of non-constant-Reynolds-number flows, laminarization and turbulentization were quantified by the ratio of the rate of turbulence production to the rate of turbulence destruction.
7
Schoefs, Franck, and Hamed Ameryoun. "Probabilistic Modeling of the Bio-Colonization Effects on Hydrodynamic Forces With Several Combinations of Sea-State Condition: A Study on Jacket-Platforms in the Gulf of Guinea." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-11100.
Full textAbstract:
During the stage of designing or re-assessment of a jacket-type offshore structure, one of the most important phases is the re-evaluation of environmental loads, which are exerted by the waves, the wind and the currents, and updating the new data (e.g. meteocean, new regulation, structural damaging etc.). The former is mainly caused by the randomness or uncertainty nature of the marine environment as well as the presence of marine growth that makes the modeling of environmental loading more complicated. The general species of marine growth may be divided into two main categories: vegetable (e.g. algae) and animal (e.g. mussel, anemones, and corals). Indeed, the structures can be covered by many marine organisms quickly (in the first weeks). The influence of bio-colonization on an offshore structure can be measured at several levels: obstruct or prohibits a visual inspection of the subjacent support, cost of procedures of cleaning for oil industries and increasing the hydrodynamic forces on the structure. Considering the latter, loading change due screen effect and added mass are shown to be the most relevant. This study aims to provide a probabilistic modeling of marine growth colonization in the Gulf of Guinea. A physical matrix response surface is used in view to provide a probabilistic modeling of the environmental loading on Jacket type offshore structures for quasi-static behavior in the presence of marine growth. The paper focuses on uncertainty and sensitivity studies respecting to the effects of wave, wind-sea and currents.
8
Strong, Philip M. "Influence of Passenger Car Suspension Design on Carbody Roll and on Wheel Unloading on Curves at Unbalance Speeds." In IEEE/ASME/ASCE 2008 Joint Rail Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/jrc2008-63038.
Full textAbstract:
Analytical results indicate that there is a wide variation in roll and lateral behavior on curves at unbalance speeds, for passenger car suspensions in use today. This paper categorizes passenger car types and analyzes behavior under the action of quasi-static lateral forces such as can occur on curves. Understanding this behavior can be important in providing guidelines for developing new designs that operate at relatively high unbalance speeds while still retaining safe operation, good ride quality and other performance related to suspension system design. The approach taken is to develop equations of motion in terms of the physical parameters that must be known in order to determine carbody roll and lateral motions due to lateral loads and laterally offset component weights. These equations are then rearranged in terms of parameters that characterize quasistatic and dynamic performance in a form that facilitates making general statements about the comparative influence of categories of cars on carbody roll and lateral motions, and the resultant increase in wheel unloading, as functions of lateral load. Results are presented for ranges of cars in each category. Roll and lateral motions of existing designs can be estimated by using the physical parameters of the existing design to calculate the parameters used in the equations presented in the paper and then using those equations to calculate estimates of the roll and lateral motions. For contemplated new designs either physical parameters can be selected and motions calculated, or values of the parameters used in the equations presented in the paper that result in desirable levels of roll and lateral motions can be used as trial values for initial and later iterations of the design. The analytical approach has been subjected to limited correlation with static lean test results with good agreement found.
9
Shah, Pranav D., Jose Daniel D. Melo, Carlos A. Cimini, and Jeffrey T. Fong. "Composite Material Property Database Using Smooth Specimens to Generate Design Allowables With Uncertainty Estimation." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-26145.
Full textAbstract:
For brevity, the class of “composite materials” in this paper is intended to refer to one of its subclasses, namely, the fiber-reinforced composite materials. In developing composite material property databases, three categories of data are needed. Category 1 consists of all raw test data with detailed information on specimen preparation, test machine description, specimen size and number per test, test loading history including temperature and humidity, etc., test configuration such as strain gage type and location, grip description, etc. Category 2 is the design allowable derived from information contained in Category 1 without making further experimental tests. Category 3 is the same design allowable for applications such that new experiments prescribed by user to obtain more reliable properties for the purpose on hand. At present, most handbook-based composite material property databases contain incomplete information in Category 1 (raw data), where a user is given only the test average values of properties such as longitudinal, transverse, and shear moduli, major and out-of-plane Poisson’s ratios, longitudinal tensile and compressive, transverse tensile and compressive, and shear strengths, inter-laminar shear strength, ply thickness, hygrothermal expansion coefficients, specific gravity, fiber volume fraction, etc. The presentation in Category 1 ignores the inclusion of the entire test environment description necessary for a user to assess the uncertainty of the raw data. Furthermore, the design allowable listed in Category 2 is deterministically obtained from Category 1 and the user is given average design allowable without uncertainty estimation. In this paper, it is presented a case study where average design allowable failure envelopes of open hole specimens were obtained numerically for two different quasi-isotropic carbon fiber-epoxy laminates using the appropriate Category 1 data. Using the method of statistical design of experiments, it is then showed how the average design allowable can be supplemented with uncertainty estimates if the Category 1 database is complete. Application of this methodology to predicting reliability of composite structures is discussed.
Reports on the topic "Quasi-categories"
1
Ashley, Caitlyn, Elizabeth Spencer Berthiaume, Philip Berzin, Rikki Blassingame, Stephanie Bradley Fryer, John Cox, E. Samuel Crecelius, et al. Law and Policy Resource Guide: A Survey of Eminent Domain Law in Texas and the Nation. Edited by Gabriel Eckstein. Texas A&M University School of Law Program in Natural Resources Systems, 2017. http://dx.doi.org/10.37419/eenrs.eminentdomainguide.
Full textAbstract:
Eminent Domain is the power of the government or quasi-government entities to take private or public property interests through condemnation. Eminent Domain has been a significant issue since 1879 when, in the case of Boom Company v. Patterson, the Supreme Court first acknowledged that the power of eminent domain may be delegated by state legislatures to agencies and non-governmental entities. Thus, the era of legal takings began. Though an important legal dispute then, more recently eminent domain has blossomed into an enduring contentious social and political problem throughout the United States. The Fifth Amendment to the United States Constitution states, “nor shall private property be taken for public use, without just compensation.” Thus, in the wake of the now infamous decision in Kelo v. City of New London, where the Court upheld the taking of private property for purely economic benefit as a “public use,” the requirement of “just compensation” stands as the primary defender of constitutionally protected liberty under the federal constitution. In response to Kelo, many state legislatures passed a variety of eminent domain reforms specifically tailoring what qualifies as a public use and how just compensation should be calculated. Texas landowners recognize that the state’s population is growing at a rapid pace. There is an increasing need for more land and resources such as energy and transportation. But, private property rights are equally important, especially in Texas, and must be protected as well. Eminent domain and the condemnation process is not a willing buyer and willing seller transition; it is a legally forced sale. Therefore, it is necessary to consider further improvements to the laws that govern the use of eminent domain so Texas landowners can have more assurance that this process is fair and respectful of their private property rights when they are forced to relinquish their land. This report compiles statutes and information from the other forty-nine states to illustrate how they address key eminent domain issues. Further, this report endeavors to provide a neutral third voice in Texas to strike a more appropriate balance between individual’s property rights and the need for increased economic development. This report breaks down eminent domain into seven major topics that, in addition to Texas, seemed to be similar in many of the other states. These categories are: (1) Awarding of Attorneys’ Fee; (2) Compensation and Valuation; (3) Procedure Prior to Suit; (4) Condemnation Procedure; (5) What Cannot be Condemned; (6) Public Use & Authority to Condemn; and (7) Abandonment. In analyzing these seven categories, this report does not seek to advance a particular interest but only to provide information on how Texas law differs from other states. This report lays out trends seen across other states that are either similar or dissimilar to Texas, and additionally, discusses interesting and unique laws employed by other states that may be of interest to Texas policy makers. Our research found three dominant categories which tend to be major issues across the country: (1) the awarding of attorneys’ fees; (2) the valuation and measurement of just compensation; and (3) procedure prior to suit.
2
Parsons, Helen M., Hamdi I. Abdi, Victoria A. Nelson, Amy M. Claussen, Brittin L. Wagner, Karim T. Sadak, Peter B. Scal, Timothy J. Wilt, and Mary Butler. Transitions of Care From Pediatric to Adult Services for Children With Special Healthcare Needs. Agency for Healthcare Research and Quality (AHRQ), May 2022. http://dx.doi.org/10.23970/ahrqepccer255.
Full textAbstract:
Objective. To understand the evidence base for care interventions, implementation strategies, and between-provider communication tools among children with special healthcare needs (CSHCN) transitioning from pediatric to adult medical care services. Data sources. We searched Ovid MEDLINE, Ovid Embase, the Cochrane Central trials (CENTRAL) registry, and CINAHL to identify studies through September 10, 2021. We conducted grey literature searches to identify additional resources relevant to contextual questions. Review methods. Using a mixed-studies review approach, we searched for interventions or implementation strategies for transitioning CSHCN from pediatric to adult services. Two investigators screened abstracts and full-text articles of identified references for eligibility. Eligible studies included randomized controlled trials, quasi-experimental observational studies, and mixed-method studies of CSHCN, their families, caregivers, or healthcare providers. We extracted basic study information from all eligible studies and grouped interventions into categories based on disease conditions. We summarized basic study characteristics for included studies and outcomes for studies assessed as low to medium risk of bias using RoB-2. Results. We identified 9,549 unique references, 440 of which represented empirical research; of these, 154 (16 major disease categories) described or examined a care transition intervention with enough detail to potentially be eligible for inclusion in any of the Key Questions. Of these, 96 studies met comparator criteria to undergo risk of bias assessment; however only 9 studies were assessed as low or medium risk of bias and included in our analytic set. Low-strength evidence shows transition clinics may not improve hemoglobin A1C levels either at 12 or 24 months in youth with type 1 diabetes mellitus compared with youth who received usual care. For all other interventions and outcomes, the evidence was insufficient to draw meaningful conclusions because the uncertainty of evidence was too high. Some approaches to addressing barriers include dedicating time and resources to support transition planning, developing a workforce trained to care for the needs of this population, and creating structured processes and tools to facilitate the transition process. No globally accepted definition for effective transition of care from pediatric to adult services for CSHCN exists; definitions are often drawn from principles for transitions, encompassing a broad set of clinical aspects and other factors that influence care outcomes or promote continuity of care. There is also no single measure or set of measures consistently used to evaluate effectiveness of transitions of care. The literature identifies a limited number of available training and other implementation strategies focused on specific clinical specialties in targeted settings. No eligible studies measured the effectiveness of providing linguistically and culturally competent healthcare for CSHCN. Identified transition care training, and care interventions to
3
Lewis, Dustin, Radhika Kapoor, and Naz Modirzadeh. Advancing Humanitarian Commitments in Connection with Countering Terrorism: Exploring a Foundational Reframing concerning the Security Council. Harvard Law School Program on International Law and Armed Conflict, December 2021. http://dx.doi.org/10.54813/uzav2714.
Full textAbstract:
The imperative to provide humanitarian and medical services on an urgent basis in armed conflicts is anchored in moral tenets, shared values, and international rules. States spend tens of billions of dollars each year to help implement humanitarian programs in conflicts across the world. Yet, in practice, counterterrorism objectives increasingly prevail over humanitarian concerns, often resulting in devastating effects for civilian populations in need of aid and protection in war. Not least, confusion and misapprehensions about the power and authority of States relative to the United Nations Security Council to set policy preferences and configure legal obligations contribute significantly to this trajectory. In this guide for States, we present a framework to reconfigure relations between these core commitments by assessing the counterterrorism architecture through the lens of impartial humanitarianism. We aim in particular to provide an evidence base and analytical frame for States to better grasp key legal and policy issues related to upholding respect for principled humanitarian action in connection with carrying out the Security Council’s counterterrorism decisions. We do so because the lack of knowledge regarding interpretation and implementation of counterterrorism resolutions matters for the coherence, integrity, and comprehensiveness of humanitarian policymaking and protection of the humanitarian imperative. In addition to analyzing foundational concerns and evaluating discernible behaviors and attitudes, we identify avenues that States may take to help achieve pro-humanitarian objectives. We also endeavor to help disseminate indications of, and catalyze, States’ legally relevant positions and practices on these issues. In section 1, we introduce the guide’s impetus, objectives, target audience, and structure. We also describe the methods that we relied on and articulate definitions for key terms. In section 2, we introduce key legal actors, sources of law, and the notion of international legal responsibility, as well as the relations between international and national law. Notably, Security Council resolutions require incorporation into national law in order to become effective and enforceable by internal administrative and judicial authorities. In section 3, we explain international legal rules relevant to advancing the humanitarian imperative and upholding respect for principled humanitarian action, and we sketch the corresponding roles of humanitarian policies, programs, and donor practices. International humanitarian law (IHL) seeks to ensure — for people who are not, or are no longer, actively participating in hostilities and whose needs are unmet — certain essential supplies, as well as medical care and attention for the wounded and sick. States have also developed and implemented a range of humanitarian policy frameworks to administer principled humanitarian action effectively. Further, States may rely on a number of channels to hold other international actors to account for safeguarding the humanitarian imperative. In section 4, we set out key theoretical and doctrinal elements related to accepting and carrying out the Security Council’s decisions. Decisions of the Security Council may contain (binding) obligations, (non-binding) recommendations, or a combination of the two. UN members are obliged to carry out the Council’s decisions. Member States retain considerable interpretive latitude to implement counterterrorism resolutions. With respect to advancing the humanitarian imperative, we argue that IHL should represent a legal floor for interpreting the Security Council’s decisions and recommendations. In section 5, we describe relevant conduct of the Security Council and States. Under the Resolution 1267 (1999), Resolution 1989 (2011), and Resolution 2253 (2015) line of resolutions, the Security Council has established targeted sanctions as counterterrorism measures. Under the Resolution 1373 (2001) line of resolutions, the Security Council has adopted quasi-“legislative” requirements for how States must counter terrorism in their national systems. Implementation of these sets of resolutions may adversely affect principled humanitarian action in several ways. Meanwhile, for its part, the Security Council has sought to restrict the margin of appreciation of States to determine how to implement these decisions. Yet international law does not demand that these resolutions be interpreted and implemented at the national level by elevating security rationales over policy preferences for principled humanitarian action. Indeed, not least where other fields of international law, such as IHL, may be implicated, States retain significant discretion to interpret and implement these counterterrorism decisions in a manner that advances the humanitarian imperative. States have espoused a range of views on the intersections between safeguarding principled humanitarian action and countering terrorism. Some voice robust support for such action in relation to counterterrorism contexts. A handful call for a “balancing” of the concerns. And some frame respect for the humanitarian imperative in terms of not contradicting counterterrorism objectives. In terms of measures, we identify five categories of potentially relevant national counterterrorism approaches: measures to prevent and suppress support to the people and entities involved in terrorist acts; actions to implement targeted sanctions; measures to prevent and suppress the financing of terrorism; measures to prohibit or restrict terrorism-related travel; and measures that criminalize or impede medical care. Further, through a number of “control dials” that we detect, States calibrate the functional relations between respect for principled humanitarian action and countering terrorism. The bulk of the identified counterterrorism measures and related “control dials” suggests that, to date, States have by and large not prioritized advancing respect for the humanitarian imperative at the national level. Finally, in section 6, we conclude by enumerating core questions that a State may answer to help formulate and instantiate its values, policy commitments, and legal positions to secure respect for principled humanitarian action in relation to counterterrorism contexts.