Examining science communication on Reddit: From an “Assembled” to a “Disassembling” approach

This study examines science communication within Ask Me Anything sessions hosted by US National Oceanic and Atmospheric Administration scientists on Reddit. In addition to considering a unique social media platform, our work makes an important contribution in revealing the limitations of a traditional approach to studying science communication and modeling an alternative. First, using an “assembled” approach, we qualitatively explore themes in National Oceanic and Atmospheric Administration scientists’ posts and consider how they reflect the goals of “deficit” and “dialogue” models. Second, using a “disassembling” approach, inspired by Davies and Horst and actor-network theory, we more deeply examine our experiences studying the Ask Me Anything sessions. We then demonstrate how this alternative approach identifies “hidden” human and non-human actants that may have shaped science communication as “mediators.” We use these insights to reject the common assumption that science communication on social media occurs solely and directly between scientists and publics.

Consider your companions carefully: How voters perceive (coalition) governments’ poor valence images?

Numerous studies of comparative political behavior examine how voters perceive parties’ ideological positions on various policy issues, either in a standard uni-dimensional space or on single issues. These studies assume these ideological positions to be representative of the entire governing coalition, classifying the government as a single unitary. While a common assumption when assessing coalition governments’ ideological positions, it is unclear whether this logic of shared accountability holds for voters’ perceptions of valence. To fill this gap, I use a conjoint experiment to assess the perceptual influence of valence issues on coalitional accountability. Overall, my results show that unlike standard left-right ideological positions, voters project the prime minister’s and (junior) cabinet members’ low valence bidirectionally onto each other. This research has implications for the prime minister’s selection process for (junior) cabinet members and junior parties’ own calculus of whether to participate in a coalition or not.

Comparative Anaphora: comparing alternatives

A common assumption in degree semantics is that there is a functionargumentrelationship betwen the comparative morpheme er and the overt standard.Drawing on observations from comparatives without an overt standard, I argue forreconsiderations of this assumption and offer a reanalysis of er, where it directlycompares to the alternative in the second dimension of meaning.

Once Good, Always Good? Testing Nudge’s Spillovers on Pro Environmental Behavior

It is a common assumption to believe that encouraging pro environmental behavior (PEB) in one domain would lead to increased PEB in other domains (best-case scenario) or just be restricted to the initial targeted domain (worst-case scenario). Evidence from a rapidly growing literature on moral licensing suggests that interventions targeting behavioral change could lead to an even worse scenario, with individuals starting to underperform in one domain, as a compensation for their good performance in other domains. We propose to study the dynamic of PEBs when individuals are exposed to a specific nudge (priming) via an original experiment designed to capture actual behavior. We found that priming could increase PEB, but does not thwart moral licensing. Primed individuals end up doing worse than non-primed individual under a moral licensing condition. A more comprehensive view of the mechanisms underlying behavioral change is essential to support sustainable policies.

A Relational Moral Theory

A Relational Moral Theory provides a new answer to the long-standing question of what all morally right actions might have in common as distinct from wrong ones, by drawing on neglected resources from the Global South and especially the African philosophical tradition. The book points out that the principles of utility and of respect for autonomy, the two rivals that have dominated Western moral theory for about two centuries, share an individualist premise. Once that common assumption is replaced by a relational perspective that has been salient in African ethical thought, a different comprehensive principle focused on harmony or friendliness emerges, one that is shown to correct the blind spots of the Western principles and to have implications for a wide array of applied controversies that an international audience of moral philosophers, professional ethicists, and similar thinkers will find attractive.

“I Took a Screenshot”

There is a common assumption that today’s college students do not know a world without phones, screens, and online platforms specifically designed for connecting and sharing every facet of daily living. While college students use technologies on a daily basis, its use is contextualized between academic and nonacademic use. This chapter focuses on the technology experiences of today’s emerging adults, both in and out of the higher education classroom. It discusses how technology impacts sense of self, relationships, mental health, and learning. A case study and guiding questions facilitate application of the material and help readers understand the impact of technological experiences (or lack thereof) on emerging adults.

Comparing newspapers in mainland China and Hong Kong: The limits of media systems theory

Most comparative studies of media are undertaken between different countries. It is normally assumed that there are considerable commonalities between the media in a given country and it is usually argued that these are sufficient to form a ‘media system’, which can usefully be contrasted with that of another country. It is relatively unusual to find two sets of media within one country that are sufficiently distinct as be considered as different systems. This paper explores one of the exceptions to that general rule: the case of the Hong Kong media as compared with those of mainland China. Given the different historical and current situations of the two locations at the time the research was conducted, it is to be expected that the kinds of journalism practised would be radically dissimilar. The results of a content analysis of five mainland and three Hong Kong papers demonstrate that, at the aggregate level, there are indeed important differences. A more detailed analysis, however, demonstrates that each of the three Hong Kong papers is in fact closer to mainland groupings than they are to each other. One Hong Kong paper, Ta Kung Pao, is closest to the most ‘official’ grouping of mainland papers, while Ming Pao falls in to a grouping with the ‘liberal’ mainland paper. The now defunct Apple Daily, on the other hand, has the closest links with the ‘popular official’ mainland press. Taken together, these findings suggest that the common assumption that different forms of journalism are best compared on a national basis is incorrect and that factors like market position and ideological orientation have an important influence on the kinds of journalism practised across borders.

The effect of uncertainty on negative discounting

The preference to receive benefits as early as possible and delay costs as much as possible is natural for people. That means a positive discount rate in the intertemporal choice, which is a common assumption in economics. However, as research in behavioral economics proves, in certain situations a negative discount rate occurs. The purpose of this paper is to show that the assumption of positive discounting is not always true. The presented experimental study shows how a decrease in probability increases the chances of negative discounting. According to the results, the expected large, uncertain profit is more likely to be deferred over time than a certain profit of the same value. On the other hand, the expected large, uncertain loss is more willingly experienced earlier than a certain loss of the same value. In both cases, it means an increase in the frequency of negative discounting due to increased uncertainty. The results of the study broaden the existing knowledge about the impact of probability on discounting in a situation of expected losses and the area of negative discounting.

Effect of Probabilistic Similarity Measure on Metric-Based Few-Shot Classification

In developing a few-shot classification model using deep networks, the limited number of samples in each class causes difficulty in utilizing statistical characteristics of the class distributions. In this paper, we propose a method to treat this difficulty by combining a probabilistic similarity based on intra-class statistics with a metric-based few-shot classification model. Noting that the probabilistic similarity estimated from intra-class statistics and the classifier of conventional few-shot classification models have a common assumption on the class distributions, we propose to apply the probabilistic similarity to obtain loss value for episodic learning of embedding network as well as to classify unseen test data. By defining the probabilistic similarity as the probability density of difference vectors between two samples with the same class label, it is possible to obtain a more reliable estimate of the similarity especially for the case of large number of classes. Through experiments on various benchmark data, we confirm that the probabilistic similarity can improve the classification performance, especially when the number of classes is large.

An Analysis of the Effects Causing an Asymmetric Behavior of the Lateral Lubricating Films of External Spur Gear Machines

The torque efficiency and flow efficiency of positive displacement machines for fluid power applications are determined by the behavior of their internal lubricating interfaces. This aspect has motivated the development of tribological simulation tools for the analysis of these interfaces. The level of details these tools can provide allows explaining some counterintuitive aspects that occur in these interfaces. This paper focuses on a significant example, which is the high asymmetric behavior of the lubricating films occurring in pressure compensated external gear pumps. These units are often designed with a symmetric axial balancing compensation system. Notwithstanding, there are differences between the lateral gaps that can be explained only considering the mutual effects of the pressure development in the film and the material deformation. To study this problem, this paper utilizes the tool Multics-HYGESim developed by the authors’ research team. Two analyses are performed: the first one imposing axial symmetry in the behavior of the gap, which is the common assumption discussed in literature; the second one (referred to as “full configuration”), which holds the asymmetric behavior of the gap. An experimental set-up is used to validate the modeling assumptions based on the measurements of the drain leakage and volumetric efficiency. The main paper findings are on the uneven distribution of these leakages, which indicates an asymmetric behavior of the gap films in the unit.