Sympathetic science: analogism in Brazilian ethnobiological repertoires among quilombolas of the Atlantic forest and Amazonian ribeirinhos

Background Drawing on Phillipe Descola’s comparative analysis of ontological regimes across cultures, this article identifies analogism guiding ethnobiological repertories among two distinctive traditional tropical forest communities in Brazil. Methods We carried out participant observation, semi-structured interviews and informal dialog with 48 individuals, among quilombolas of the Atlantic Forest in southeastern Brazil and ribeirinhos of the Amazon. Results We documented 60 traditional practices governed by analogical principles, comprising hunting, ethnomedical practices, food taboos, and other interactions with non-human entities. We also identify and classify the analogical principles reported in the field data. Based on this classification, we address the phenomenological dimension of the ethnobiological repertoires and discuss the epistemological and ontological foundations of this form of reasoning. We also hypothesize on the role of analogism shaping ethnobiological repertories more generally in Brazil. Conclusion The heuristic model we apply—articulating phenomenology, epistemology and ontology—could prove valuable in ethnobiology and the emerging field of “anthropology beyond the human.”

Fluctuations in willingness to communicate of an EFL lecturer: An observation study in Indonesia

Despite the growing number of research on Willingness to Communicate (WTC) in English students, research of teachers’ WTC in English is still scarce. At the same time, the fluctuations of WTC in English in authentic classroom interactions are still under research. This study aims to observe the fluctuations in WTC of the English lecturer in the Indonesian context. The data were collected through video recordings during an online classroom learning session where participants were teaching their students. The data were then transcribed, coded, and analyzed thematically by drawing from MacIntyre et al.’s (1998) Heuristic Model. From the results of the analysis, WTC fluctuations in English are divided into four factors: (1) modeling the use of English in the classroom, (2) the power of affirmation, (3) focusing on the message, and (4) showing language similarity. The implication of this study is also discussed. DOI: 10.26905/enjourme.v6i2.5983

Covid-19 and freedom

This article examines the multifaceted nature of freedom in relation to the world’s efforts to cope with the Covid-19 pandemic. The aim is to show that in democratic societies, increasing societal regulation to stop the spread of the virus does not necessarily curtail all possible conceptions of freedom. On the contrary, we can even construct new institutional realms or community-strengthening mechanisms through which some forms of freedom can materialise in an unforeseen manner. The heuristic model that informs the analysis is composed of six different embodiments of freedom.

A Feature-Independent Hyper-Heuristic Approach for Solving the Knapsack Problem

Recent years have witnessed a growing interest in automatic learning mechanisms and applications. The concept of hyper-heuristics, algorithms that either select among existing algorithms or generate new ones, holds high relevance in this matter. Current research suggests that, under certain circumstances, hyper-heuristics outperform single heuristics when evaluated in isolation. When hyper-heuristics are selected among existing algorithms, they map problem states into suitable solvers. Unfortunately, identifying the features that accurately describe the problem state—and thus allow for a proper mapping—requires plenty of domain-specific knowledge, which is not always available. This work proposes a simple yet effective hyper-heuristic model that does not rely on problem features to produce such a mapping. The model defines a fixed sequence of heuristics that improves the solving process of knapsack problems. This research comprises an analysis of feature-independent hyper-heuristic performance under different learning conditions and different problem sets.

An integrative conceptual two-factor model of workplace value congruence and incongruence

Purpose The purpose of this paper is to integrate research conducted on work values, political values and cultural values to develop a new heuristic model of values that can be applied to workplace outcomes. Design/methodology/approach This is a conceptual paper that draws upon the work values, political values and cultural values literatures and the “similarity leads to attraction” and “dissimilarity leads to repulsion” hypotheses to advocate an integrative conceptual model spanning these constructs. Findings Integrating the three types of values with the underlying hypotheses of “similarity leads to attraction” and “dissimilarity leads to repulsion”, an internally consistent two-factor model of values is developed. This heuristic model argues that one set of factors causes value congruence and its associated outcomes and a different set of factors causes value incongruence and its associated outcomes. By conceptualizing value congruence and value incongruence as a two-factor theory, the idea is advanced that people do not assess value similarity and value dissimilarity unidimensionally, but these are two separate dimensions supported by different theoretical hypotheses and processes. Originality/value Previous conceptual work on values has isolated different types of values and considered them separately. A contribution is made by integrating the three main streams of values research. The paper is the first to advocate a two-factor theory to values and the first to incorporate the “similarity leads to attraction” and “dissimilarity leads to repulsion” hypotheses. The model repositions the focus for future research on value congruence and incongruence.

Assessing the potential efficacy of marine cloud brightening for cooling Earth using a simple heuristic model

A simple heuristic model is described to assess the potential for increasing solar reflection by augmenting the aerosol population below marine low clouds, which nominally leads to increased cloud droplet concentration and albedo. The model estimates the collective impact of many point source particle sprayers, each of which generates a plume of injected particles that affects clouds over a limited area. A look-up table derived from simulations of an explicit aerosol activation scheme is used to derive cloud droplet concentration as a function of the sub-cloud aerosol size distribution and updraft speed, and a modified version of Twomey's formulation is used to estimate radiative forcing. Plume overlap is accounted for using a Poisson distribution, assuming idealized elongated cuboid plumes that have a length driven by aerosol lifetime and wind speed, a width consistent with satellite observations of ship track broadening, and a depth equal to an assumed boundary layer depth. The model is found to perform favorably against estimates of brightening from large eddy simulation studies that explicitly model cloud responses to aerosol injections over a range of conditions. Although the heuristic model does not account for cloud condensate or coverage adjustments to aerosol, in most realistic ambient remote marine conditions these tend to augment the Twomey effect in the large eddy simulations, with the result being a modest underprediction of brightening in the heuristic model. The heuristic model is used to evaluate the potential for global radiative forcing from marine cloud brightening as a function of the quantity, size, and lifetime of salt particles injected per sprayer and the number of sprayers deployed. Radiative forcing is sensitive to both the background aerosol size distribution in the marine boundary layer into which particles are injected and the assumed updraft speed. Given representative values from the literature, radiative forcing sufficient to offset a doubling of carbon dioxide ΔF2×CO2 is possible but would require spraying 50 % or more of the ocean area. This is likely to require at least 104 sprayers to avoid major losses of particles due to near-sprayer coagulation. The optimal dry diameter of injected particles, for a given salt mass injection rate, is 30–60 nm. A major consequence is that the total salt emission rate (50–70 Tg yr−1) required to offset ΔF2×CO2 is a factor of five lower than the emissions rates required to generate significant forcing in previous studies with climate models, which have mostly assumed dry diameters for injected particles in excess of 200 nm. With the lower required emissions, the salt mass loading in the marine boundary layer for ΔF2×CO2 is dominated by natural salt aerosol, with injected particles only contributing ∼ 10 %. When using particle sizes optimized for cloud brightening, the aerosol direct radiative forcing is shown to make a minimal contribution to the overall radiative forcing.