Stable Condition
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Stable Condition
Author: Daniel J. Hopkins
language: en
Publisher: Russell Sage Foundation
Release Date: 2023-03-23
The Affordable Care Act (ACA), the sweeping health care reform enacted by the Obama Administration in 2010, continues to be a contentious policy at the center of highly polarized political debates. Both before and after the law’s passage, political elites on both sides of the issue attempted to sway public opinion through two traditional approaches: messaging and policymaking itself. They operated under the assumption that the public’s personal experiences toward the law would make them more favorable. Yet these tried-and-true methods have had limited influence on public attitudes toward the ACA. Public opinion towards the ACA remained stable from 2010 to 2016, with more Americans opposing the law than supporting it. It was only after Donald Trump was elected in 2016 and the prospect of the law being repealed became a reality that public opinion swung in favor of the ACA. If traditional methods of influencing public opinion had little impact on attitudes towards the ACA, what did? In Stable Condition, political scientist Daniel J. Hopkins draws on survey data from 2009 to 2020 to assess how a variety of factors such as personal experience, political messaging, and partisanship did or did not affect public opinion on the ACA. Hopkins finds that although personal experience with the ACA’s Medicaid expansion increased favorability among low-income Americans, it did not have a broader overall impact on public opinion. Personal experience with the Health Insurance Marketplace did not increase wider support for the ACA either. Due to the complex nature of the law, users of the Marketplace often did not realize they were benefiting from the ACA. Therefore, perceptions of the Marketplace were shaped by high-profile issues with the enrollment website and opposition to the individual mandate. These experiences ultimately offset one another, resulting in little discernable change in public opinion overall. Hopkins argues that political polarization was also responsible for elite’s limited influence and that public opinion on the ACA was largely determined by partisanship and political affiliation. Americans quickly aligned with their party’s stance on the law and were resistant to changing their beliefs despite the efforts of political elites. Stable Condition is an illuminating examination of the limits of elites’ influence and the forces that shaped public opinion about the Affordable Care Act.
Logic Circuit Design
Author: Shimon P. Vingron
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-03-28
In three main divisions the book covers combinational circuits, latches, and asynchronous sequential circuits. Combinational circuits have no memorising ability, while sequential circuits have such an ability to various degrees. Latches are the simplest sequential circuits, ones with the shortest memory. The presentation is decidedly non-standard. The design of combinational circuits is discussed in an orthodox manner using normal forms and in an unorthodox manner using set-theoretical evaluation formulas relying heavily on Karnaugh maps. The latter approach allows for a new design technique called composition. Latches are covered very extensively. Their memory functions are expressed mathematically in a time-independent manner allowing the use of (normal, non-temporal) Boolean logic in their calculation. The theory of latches is then used as the basis for calculating asynchronous circuits. Asynchronous circuits are specified in a tree-representation, each internal node of the tree representing an internal latch of the circuit, the latches specified by the tree itself. The tree specification allows solutions of formidable problems such as algorithmic state assignment, finding equivalent states non-recursively, and verifying asynchronous circuits.
Dynamic Stability of Suddenly Loaded Structures
Author: George J. Simitses
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-12-06
Dynamic instability or dynamic buckling as applied to structures is a term that has been used to describe many classes of problems and many physical phenomena. It is not surprising, then, that the term finds several uses and interpretations among structural mechanicians. Problems of parametric resonance, follower-force, whirling of rotating shafts, fluid-solid interaction, general response of structures to dynamic loads, and several others are all classified under dynamic instability. Many analytical and experimental studies of such problems can be found in several books as either specialized topics or the main theme. Two such classes, parametric resonance and stability of nonconservative systems under static loads (follower-force problems), form the main theme of two books by V. V. Bolotin, which have been translated from Russian. Moreover, treatment of aero elastic instabilities can be found in several textbooks. Finally, analytical and experimental studies of structural elements and systems subjected to intense loads (of very short duration) are the focus of the recent monograph by Lindberg and Florence. The first chapter attempts to classify the various "dynamic instability" phenomena by taking into consideration the nature of the cause, the character of the response, and the history of the problem. Moreover, the various concepts and methodologies as developed and used by the various investigators for estimating critical conditions for suddenly loaded elastic systems are fully described. Chapter 2 demonstrates the concepts and criteria for dynamic stability through simple mechanical models with one and two degrees of freedom.