Elastic properties closures using second-order homogenization theories: Case studies in composites of two isotropic constituents

2006 ◽  
Vol 54 (11) ◽  
pp. 3117-3126 ◽  
Author(s):  
Surya R. Kalidindi ◽  
Massimiliano Binci ◽  
David Fullwood ◽  
Brent L. Adams
Open Physics ◽  
2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Lili Liu ◽  
Xiaozhi Wu ◽  
Weiguo Li ◽  
Rui Wang ◽  
Qing Liu

AbstractThe high temperature and pressure effects on the elastic properties of the AgRE (RE=Sc, Tm, Er, Dy, Tb) intermetallic compounds with B2 structure have been performed from first principle calculations. For the temperature range 0-1000 K, the second order elastic constants for all the AgRE intermetallic compounds follow a normal behavior: they decrease with increasing temperature. The pressure dependence of the second order elastic constants has been investigated on the basis of the third order elastic constants. Temperature and pressure dependent elastic anisotropic parameters A have been calculated based on the temperature and pressure dependent elastic constants.


2016 ◽  
Author(s):  
Christopher Palazzolo

In the electoral hierarchy, subnational elections have frequently been relegated to second-order status, as are supranational elections (i.e., European Parliament elections). According to the predictions of the second-order electoral framework, subnational elections should be dependent on national trends, manifest substantially lower participation levels, exhibit anti-government swing and higher support for small and regional parties. However, as subnational governments gain increasing powers and jurisdictional competencies, the potential for greater electoral participation and/or divergent and complex electoral behaviors between the state and substate levels becomes more likely. This dissertation explores what political factors and attitudes affect the likelihood of second-order behavior in a specific set of subnational elections, namely second-tier subnational elections.The first part of the dissertation employs a large cross-national aggregate analysis of second-tier elections in twelve countries from 1980-2002. The principal hypothesis is that a variety of institutional, economic, election-specific, and contextual features affect differential participation and vote choice in second-tier contests. Initial descriptive statistics provide evidence that there are significant variations between and among second-tier units regarding levels of differential turnout, electoral incongruence or deviation, and anti-government swing. Multivariate models indicate that factors such as the level of subnational revenue-raising capacity, subnational electoral timing, and bicameralism (among others) exert significant power over differences in electoral participation and electoral choice in multilevel electoral environments.Individual case studies of subnational elections in Spain, Germany, and Finland further help to elucidate inter-country differences in second-order expectations. The case studies further provide evidence of individual-level factors that impact the incidence of national political dominance, interlevel vote switching and participation in these contests. In particular, the surveys indicate that individual political attitudes and preferences predispose individuals in different manners to participate in second-tier elections, to focus more on national or subnational issues in their subnational electoral decisions, and to vote differently based on the arena in question. The individual and aggregate findings both point to the fact that the stakes of the election (both perceived and actual) directly affect the nature of electoral behavior. The dissertation's findings have distinct implications and consequences for broader political issues of decentralization, democracy, accountability, and representation.-- Chris Palazzolo, PhDHead of Collection ManagementSocial Sciences LibrarianAdjunct Professor, Department of Political ScienceEmory UniversityAtlanta, GA [email protected]<mailto:[email protected]>404-727-0143________________________________This e-mail message (including any attachments) is for the sole use ofthe intended recipient(s) and may contain confidential and privilegedinformation. If the reader of this message is not the intendedrecipient, you are hereby notified that any dissemination, distributionor copying of this message (including any attachments) is strictlyprohibited.If you have received this message in error, please contactthe sender by reply e-mail message and destroy all copies of theoriginal message (including attachments).


Author(s):  
Fatma Bouaziz ◽  
Jamil Chaabouni

In this chapter, the authors examine the criteria to use in assessing the success of e-government projects. Through an empirical enquiry based on case studies of e-government projects by Tunisian government agencies, they found that the interviewees distinguish between the project management success and the success of the deliverable. This empirical enquiry also revealed that the interviewees have made an emphasis on the success of the products delivered while the success of the project management process was relegated to a second order. The findings are used to propose a grid of the metrics to assess the success of e-government projects.


2011 ◽  
Vol 13 ◽  
pp. 47-59 ◽  
Author(s):  
Seyedmehdi Mavalizadeh ◽  
Moones Rahmandoust ◽  
Andreas Öchsner

In this study, a finite element model of a representative volume element that contains a hollow and filled single-walled Carbon nanotube (SWCNT) in two case studies was generated. It was assumed that the nanocomposites have geometric periodicity with respect to local length scale and the elastic properties can be represented by those of the representative volume element (RVE). Elastic properties in agreement with existing literature values for the Carbon nanotube and the matrix were assigned. Then for the two case studies, the tensile test was simulated to find the effect of the geometry, i.e. the volume fraction of matrix and SWCNT's properties variation, on the effective Young's modulus of the structure. In another approach, by applying perpendicular loading to the tube direction, the effect of matrix volume fraction on the transverse Young's modulus was studied. The investigations showed that for both RVEs with filled SWCNT and hollow SWCNT, the effective Young's modulus of the structure decreases approximately linear as the matrix volume fraction increases. The value of Young's modulus of the RVE with a filled Carbon nanotube was obtained to be higher than the RVE with the hollow Carbon nanotube. In addition, by increasing the tube diameter, the effective Young's modulus of the structure increases and the transverse Young's modulus decreases approximately linear for filled tubes but this parameter remains rather constant in the case of the hollow tube by increasing the matrix volume fraction.


Author(s):  
Amanda Payne ◽  
Mai Ha Vu ◽  
Jeffrey Heinz

This paper provides a computational analysis of the complexity of GEN and Correspondence Theory in terms of the nature of the logic involved in their formulation. The first result of this analysis shows that the GEN function is not definable in Monadic Second Order (MSO) logic. Second, we show that the set of input-output Correspondence-theoretic candidates from a given underlying representation is definable in First Order (FO) logic, which is less complex than MSO-logic. Third, we present some case studies where the correct input-output Correspondence-theoretic candidate from a given underlying representation can be accomplished with FO-definable, language-specific, inviolable constraints without recourse to optimization.


Author(s):  
Nikolay I. Vatin ◽  
Tesfaldet Hadgembes Gebre ◽  
Shishay Berhane Gebreslassie

The aim of the work is to present the trend of the advancement of steel design code and practical approach of steel frame design from the current AISC-LFDR to the advanced analysis. As the trend of steel frame analysis method is from first-order elastic analysis to second-order inelastic analysis which is an advanced analysis. Methods. In this paper the comparison between the load - displacement curves of several structural analysis methods is presented. Case studies are considered to analyze by different methods and comparison of practical advanced analysis method with PROKON software. The case studies includes a two-story one bay steel frame and four bays of twelve-stories steel frame. The results of first-order elastic, elastic buckling, second-order and nonlinear analyses of an unbraced frame are compared and their difference is presents. The proposed software for advanced methods demonstrates the accuracy and the computational efficiency in predicting the nonlinear analysis response of steel frame structures.


2017 ◽  
Vol 26 (1) ◽  
pp. 3-17 ◽  
Author(s):  
Juhani Rudanko

This article proceeds from the assumption that speakers engaging in verbal interaction are perceived by their interlocutors to have intentions, and it explores the concepts of impoliteness and aggravated impoliteness. Two case studies, both from Shakespeare’s Timon of Athens are considered, and it is argued that a distinction between overt and covert intentions and between first-order and second-order intentions is useful in affording a purchase on the nature of deception in conversational interaction. The article thus seeks to contribute to a deeper understanding of an aspect of impoliteness theory and to the application of impoliteness theory to the analysis of a Shakespearean play.


Author(s):  
Elif Ayiter

This study describes some of the key components of an art educational domain entitled ground<c>, which is being developed specifically for three dimensional online builder’s worlds, also called the metaverse. This undertaking takes its trajectory from ‘the Groundcourse’, a revolutionary art educational strategy based on cybernetics, developed and implemented in England during the 1960’s, upon which the author proposes to develop an art educational strategy based upon self observation. Since this proposal strongly takes into account second order cybernetics, a brief survey into the field as well as an overview of Gordon Pask’s learning theories is provided. Approaches for adapting these founding theories, through a consideration of the potential novel affordances of a three dimensional online builder’s world, is described through two case studies based upon autonomous learning and self observation implemented through avatars.


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