This paper systematically examines the theoretical and quantitative interrelations between government spending and disposable income inequality in a tractable monopolistically competitive Ramsey macroeconomy. Upon an increase in government size, we analytically show that whether the long-run after-tax Gini coefficient rises or falls depends on the sign and magnitude of the wealth/capital inequality effect versus those of the adjusted-labor effect. Under (i) a mild level of productive public expenditure externalities and (ii) a sufficiently high intertemporal elasticity of consumption substitution, our calibrated model is able to generate qualitatively as well as quantitatively consistent income inequality effects of government spending vis-à-vis recent estimation results.

The Hamiltonian of a conventional quantum system is Hermitian, which ensures real spectra of the Hamiltonian and unitary evolution of the system. However, real spectra are just the necessary conditions for a Hamiltonian to be Hermitian. In this paper, we discuss the metric operators for pseudo-Hermitian Hamiltonian which is similar to its adjoint. We first present some properties of the metric operators for pseudo-Hermitian Hamiltonians and obtain a sufficient and necessary condition for an invertible operator to be a metric operator for a given pseudo-Hermitian Hamiltonian. When the pseudo-Hermitian Hamiltonian has real spectra, we provide a new method such that any given metric operator can be transformed into the same positive-definite one and the new inner product with respect to the positive-definite metric operator is well defined. Finally, we illustrate the results obtained with an example.

Measures of uncertainty are a topic of considerable and growing interest. Recently, the introduction of extropy as a measure of uncertainty, dual to Shannon entropy, has opened up interest in new aspects of the subject. Since there are many versions of entropy, a unified formulation has been introduced to work with all of them in an easy way. Here we consider the possibility of defining a unified formulation for extropy by introducing a measure depending on two parameters. For particular choices of parameters, this measure provides the well-known formulations of extropy. Moreover, the unified formulation of extropy is also analyzed in the context of the Dempster–Shafer theory of evidence, and an application to classification problems is given.

The goal of this article is to analyze the role of convention in interpreting physical theories—in particular, how the distinction between the conventional and the nonconventional interacts with judgments of equivalence. We will begin with a discussion of what, if anything, distinguishes those statements of a theory that might be dubbed “conventions.” This will lead us to consider the conventions that are not themselves part of a theory’s content but are rather applied to the theory in interpreting it. Finally, we will consider the idea that what conventions to adopt might, itself, be regarded as a matter of convention.

Drawing on interviews with Latina congressional members and candidates, this article examines the impacts of escalating political violence on their professional lives and political careers, as well as the implications for the growing body of women of color who are engaging in public service at the national level.

Plant-based diets have emerged as athletic performance enhancers for various types of exercise. Therefore, the present study evaluated the effectiveness of plant-based diets on aerobic and strength/power performances, as well as on BMI of physically active individuals. This systematic review and meta-analysis was conducted and reported according to the guidelines outlined in the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) statement. A systematic search of electronic databases, including PubMed, Web of Science and SPORTDiscus, was performed. On the basis of the search and inclusion criteria, four and six studies evaluating the effects of plant-based diets on aerobic and strength/power performances in humans were, respectively, included in the systematic review and meta-analysis. Plant-based diets had a moderate but positive effect on aerobic performance (0·55; 95 % CI 0·29, 0·81) and no effect on strength/power performance (–0·30; 95 % CI −0·67, 0·07). The altogether analyses of both aerobic and strength/power exercises revealed that athletic performance was unchanged (0·01; 95 % CI −0·21, 0·22) in athletes who adopted plant-based diets. However, a small negative effect on BMI (–0·27; 95 % CI −0·40, –0·15) was induced by these diets. The results indicate that plant-based diets have the potential to exclusively assist aerobic performance. On the other hand, these diets do not jeopardise strength/power performance. Overall, the predicted effects of plant-based diets on physical performance are impactless, even though the BMI of their adherents is reduced.

This article addresses problems with a defensive turn in discussions of science and Indigenous ways of knowing, being, and doing. Philosophers and practitioners of science have focused recent discussions on coarse-grained questions of demarcation, epistemic parity, and identity—asking questions such as “Is Indigenous knowledge science?” Using representative examples from Aotearoa New Zealand, we expose rampant ambiguities in these arguments, and show that this combative framing can overlook what is at stake. We provide a framework for analyzing these problems and suggest better ways forward.

L’année 2022 est marquée par l’accélération de l’apurement du contentieux d’investissement visant le Canada sur le fondement de l’Accord de libre-échange nord-américain entre le gouvernement du Canada, le gouvernement des États-Unis et le gouvernement du Mexique (ALÉNA).1 Pas moins de quatre affaires connaissent leur dénouement avec des sentences arbitrales qui rejettent toutes les réclamations des investisseurs américains, dont une sentence très attendue dans l’affaire Lone Pine Resources c Canada,2 concernant l’interdiction par le Québec du gaz de schiste. Avec la fin en 2023 du régime transitoire de règlement des différends entre investisseurs et États (RDIE) entre le Canada et les États-Unis, prévu par l’Accord entre le Canada, les États-Unis et le Mexique (ACÉUM),3 ce contentieux devrait se tarir de manière durable puisque le RDIE cessera alors de s’appliquer entre les deux pays. La pratique conventionnelle du Canada en matière d’investissement continue de stagner et aucun nouvel accord n’est à signaler. Sur le plan interne toutefois, le gouvernement fédéral dépose le projet de loi C-34 qui propose la plus importante réforme de la Loi sur Investissement Canada4 depuis l’ajout d’un mécanisme d’examen des investissements étrangers relatif à la sécurité nationale en 2009.5 Le projet de loi C-34 et l’affaire Lone Pine Resources font l’objet d’une analyse détaillée dans la chronique cette année. Un tour d’horizon des principaux autres faits marquants de 2022 est d’abord effectué.

This article introduces to political science a framework to analyze the content of visual material through unsupervised and semi-supervised methods. It details the implementation of a tool from the computer vision field, the Bag of Visual Words (BoVW), for the definition and extraction of “tokens” that allow researchers to build an Image-Visual Word Matrix which emulates the Document-Term matrix in text analysis. This reduction technique is the basis for several tools familiar to social scientists, such as topic models, that permit exploratory, and semi-supervised analysis of images. The framework has gains in transparency, interpretability, and inclusion of domain knowledge with respect to other deep learning techniques. I illustrate the scope of the BoVW by conducting a novel visual structural topic model which focuses substantively on the identification of visual frames from the pictures of the migrant caravan from Central America.

We show that there is a distortion element in a finitely generated subgroup G of the automorphism group of the full shift, namely an element of infinite order whose word norm grows polylogarithmically. As a corollary, we obtain a lower bound on the entropy dimension of any subshift containing a copy of G, and that a sofic shift’s automorphism group contains a distortion element if and only if the sofic shift is uncountable. We obtain also that groups of Turing machines and the higher-dimensional Brin–Thompson groups $mV$ admit distortion elements; in particular, $2V$ (unlike V) does not admit a proper action on a CAT$(0)$ cube complex. In each case, the distortion element roughly corresponds to the SMART machine of Cassaigne, Ollinger, and Torres-Avilés [A small minimal aperiodic reversible Turing machine. J. Comput. System Sci. 84 (2017), 288–301].

The problem of unwelcome epistemic company refers to the problem of encountering agreement with your beliefs from an unwelcome source, such as someone who is known to form unreliable beliefs or have values you reject. Blanchard (2023) and Levy (2023) argue that when we encounter unwelcome agreement, we may have reason to reduce our confidence in our matching beliefs. I argue that unwelcome epistemic company rarely provides reasons to reduce our confidence, and apparent successes at improving our beliefs using unwelcome company are explained by extraneous factors. Seeing why unwelcome agents are rarely evidence our belief is false requires making a distinction between two kinds of agents who regularly form false beliefs: unreliable agents and anti-reliable agents. While unreliable agents are common, they are uninformative. While anti-reliable agents would be informative, they are incredibly rare. Unwelcome agents are also rarely evidence that we have formed our own beliefs via an unreliable process, unless we have independent evidence that we are relevantly similar to them. This is hard to obtain given that unwelcome agents, by definition, have values and methods of forming beliefs that we do not find appealing. Moreover, attempts to use unwelcome company to improve our beliefs are likely to make our beliefs worse off in a number of ways. I argue we should adopt a policy of ignoring unwelcome company, letting them have little impact on our confidence in our beliefs.

This essay takes up the project of engendering capitalism by turning to the household. It situates a gendered analysis of capitalism within recent histories of capitalism, feminist analyses of social reproduction, histories of family and industrialism, histories of sexuality, and histories of women's labor. It argues that to analyze capitalism from a household perspective clarifies three core elements of capitalist political economy. First, capitalism depended on reproductive and productive labor inside the household, from early industrialization through its most recent incarnations. Second, reproductive labor, historically anchored in the household, has served as a crucial site for development of capitalist labor relations. Third, that intensified commodification of reproductive labor has driven capitalist accumulation as well as capitalist social relations, whether that labor occurs within the household or is located beyond it.