1,100 research outputs found
Information Flow Analysis of Level 4 Payload Processing Operations
The Level 4 Mission Sequence Test (MST) was studied to develop strategies and recommendations to facilitate information flow. Recommendations developed as a result of this study include revised format of the Test and Assembly Procedure (TAP) document and a conceptualized software based system to assist in the management of information flow during the MST
Vertices of simple modules of symmetric groups labelled by hook partitions
In this article we study the vertices of simple modules for the symmetric
groups in prime characteristic . In particular, we complete the
classification of the vertices of simple -modules labelled by hook
partitions
Quasi-hereditary structure of twisted split category algebras revisited
Let be a field of characteristic , let be a finite split
category, let be a 2-cocycle of with values in the
multiplicative group of , and consider the resulting twisted category
algebra . Several interesting algebras arise that way,
for instance, the Brauer algebra. Moreover, the category of biset functors over
is equivalent to a module category over a condensed algebra , for an idempotent of . In [2] the authors
proved that is quasi-hereditary (with respect to an explicit partial order
on the set of irreducible modules), and standard modules were given
explicitly. Here, we improve the partial order by introducing a coarser
order leading to the same results on , but which allows to pass the
quasi-heredity result to the condensed algebra
describing biset functors, thereby giving a different proof of a quasi-heredity
result of Webb, see [26]. The new partial order has not been
considered before, even in the special cases, and we evaluate it explicitly for
the case of biset functors and the Brauer algebra. It also puts further
restrictions on the possible composition factors of standard modules.Comment: 39 page
A ghost algebra of the double Burnside algebra in characteristic zero
For a finite group , we introduce a multiplication on the \QQ-vector
space with basis \scrS_{G\times G}, the set of subgroups of . The
resulting \QQ-algebra \Atilde can be considered as a ghost algebra for the
double Burnside ring in the sense that the mark homomorphism from
to \Atilde is a ring homomorphism. Our approach interprets \QQ
B(G,G) as an algebra , where is a twisted monoid algebra and is
an idempotent in . The monoid underlying the algebra is again equal to
\scrS_{G\times G} with multiplication given by composition of relations (when
a subgroup of is interpreted as a relation between and ).
The algebras and \Atilde are isomorphic via M\"obius inversion in the
poset \scrS_{G\times G}. As an application we improve results by Bouc on the
parametrization of simple modules of \QQ B(G,G) and also of simple biset
functors, by using results by Linckelmann and Stolorz on the parametrization of
simple modules of finite category algebras. Finally, in the case where is a
cyclic group of order , we give an explicit isomorphism between \QQ B(G,G)
and a direct product of matrix rings over group algebras of the automorphism
groups of cyclic groups of order , where divides .Comment: 41 pages. Changed title from "Ghost algebras of double Burnside
algebras via Schur functors" and other minor changes. Final versio
Signed Young Modules and Simple Specht Modules
By a result of Hemmer, every simple Specht module of a finite symmetric group
over a field of odd characteristic is a signed Young module. While Specht
modules are parametrized by partitions, indecomposable signed Young modules are
parametrized by certain pairs of partitions. The main result of this article
establishes the signed Young module labels of simple Specht modules. Along the
way we prove a number of results concerning indecomposable signed Young modules
that are of independent interest. In particular, we determine the label of the
indecomposable signed Young module obtained by tensoring a given indecomposable
signed Young module with the sign representation. As consequences, we obtain
the Green vertices, Green correspondents, cohomological varieties, and
complexities of all simple Specht modules and a class of simple modules of
symmetric groups, and extend the results of Gill on periodic Young modules to
periodic indecomposable signed Young modules.Comment: To appear in Adv. Math. 307 (2017) 369--416. Proposition 4.3 (F4),
(F5) corrected, Lemma 4.9 adjusted accordingl
Information and Beliefs in a Repeated Normal-form Game
We study beliefs and choices in a repeated normal-form game. In addition to a baseline treatment with common knowledge of the game structure, feedback about choices in the previous period and random matching, we run treatments (i) with fixed matching, (ii) without information about the opponent’s payoffs, and (iii) without feedback about previous play. Using Stahl and Wilson’s (1995) model of limited strategic reasoning, we classify behavior with regard to its strategic sophistication and consider its development over time. In the treatments with feedback and full information about the game, we observe more strategic play, more best-responses to beliefs and more accurate beliefs over time. While feedback is the main driving force of learning to play strategically and for forming beliefs that accurately predict the behavior of the opponent, both incomplete information about the opponent’s payoffs or lack of feedback lead to a stagnation of best-response rates over time. ZUSAMMENFASSUNG - (Information und Erwartungen in einem wiederholten Normalformspiel) Wir untersuchen die Entwicklung von den Erwartungen über das Verhalten des anderen Spielers und den Entscheidungen in einem wiederholten Normalformspiel. Zusätzlich zum Haupttreatment mit common knowledge über das Spiel, Feedback über das Ergebnis in der vorigen Runde und zufälliger Zuordnung der Spieler, gibt es Kontrolltreatments mit (i) festen paarweisen Zuordnungen der Spieler, (ii) ohne Information über die Auszahlungen des anderen Spielers und (iii) ohne Feedback über das Ergebnis der vorigen Runde. Mit Hilfe von Stahl und Wilsons (1995) Modell begrenzten strategischen Verhaltens klassifizieren wir das Verhalten der Teilnehmer im Hinblick auf die strategische Sophistikation. In den Treatments mit Feedback und vollständiger Information über das Spiel nehmen strategisches Verhalten, beste Antworten auf die eigenen Erwartungen und die Akkuratheit der Erwartungen über die Zeit zu. Während Feedback der Hauptgrund dafür ist, dass die Teilnehmer lernen, sich strategisch zu verhalten und korrekte Erwartungen über das Verhalten des anderen Spielers zu bilden, führen sowohl unvollständige Information über die Auszahlungen des Gegenspielers als auch fehlendes Feedback zu einer Stagnation der Rate der besten Antworten über die Zeit.
Hybrid inorganic/organic photonic crystal biochips for cancer biomarkers detection
We report on hybrid inorganic/organic one-dimensional photonic crystal biochips sustaining Bloch surface waves. The biochips were used, together with an optical platform operating in a label-free and fluorescence configuration simultaneously, to detect the cancer biomarker Angiopoietin 2 in a protein base buffer. The hybrid photonic crystals embed in their geometry a thin functionalization poly-acrylic acid layer deposited by plasma polymerization, which is used to immobilize a monoclonal antibody for highly specific biological recognition. The fluorescence operation mode is described in detail, putting into evidence the role of field enhancement and localization at the photonic crystal surface in the shaping and intensification of the angular fluorescence pattern. In the fluorescence operation mode, the hybrid biochips can attain the limit of detection 6 ng/ml.We report on hybrid inorganic/organic one-dimensional photonic crystal biochips sustaining Bloch surface waves. The biochips were used, together with an optical platform operating in a label-free and fluorescence configuration simultaneously, to detect the cancer biomarker Angiopoietin 2 in a protein base buffer. The hybrid photonic crystals embed in their geometry a thin functionalization poly-acrylic acid layer deposited by plasma polymerization, which is used to immobilize a monoclonal antibody for highly specific biological recognition. The fluorescence operation mode is described in detail, putting into evidence the role of field enhancement and localization at the photonic crystal surface in the shaping and intensification of the angular fluorescence pattern. In the fluorescence operation mode, the hybrid biochips can attain the limit of detection 6 ng/ml
Der Heilige Geist und die Realisierung des Glaubens in der Geschichte. Ãœberlegungen zur systematischen Funktion der Pneumatologie
Die systematische Funktion der Lehre vom Heiligen Geist für die theologische Dogmatik ist umstritten. Der Beitrag arbeitet in einer problemgeschichtlichen Perspektive die These aus, dass der Pneumatologie eine notwendige und eigene Funktion für die Explikation der Religion zukommt. Deren Thema ist, wie zu zeigen sein wird, das Wissen des religiösen Aktes um seine Einbindung in eine inhaltliche Überlieferung sowie deren Wandelbarkeit
Glaube in der multireligiösen Gesellschaft: Zur Bildungskompetenz evangelischen Glaubensverständnisses
An evangelical understanding of religion: The establishment of sensible communication within religious and cultural pluralities The article argues that when different religions and cultures live together in modern societies, it will result in a great deal of conflict. It is also true of Systematic Theology driven by confessions if contact among the religious worlds of modern people is not to be lost or proof of the theoretical religious competence thereof is not to be compromised. This article discusses various theological models to include the reality of the pluralism of societies and attempts to take the existing discussions of the theology of religion further by promoting a certain model that possesses the basic grounds of Reformed Christianity. The thesis of the article reveals that with an evangelical understanding of religion, a certain encounter among religious and cultural differences can be reflected. An obvious religious understanding should not only be in mind, but also the establishment of sensible communication within religious and cultural pluralities
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