© 2017. The American Astronomical Society. All rights reserved.We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager as a part of the GPI Exoplanet Survey campaign. Images of HD 984 B were obtained in the J and H bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 au orbit with a 68% confidence interval between 14 and 28 au, an eccentricity (...) of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119°with a 68% confidence interval between 114°and 125°. To address the considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare them to known spectral types using field brown dwarf and low-mass star spectra and find a best-fit match of a field gravity M6.5 ±1.5 spectral type with a corresponding temperature of K. Photometry of the companion yields a luminosity of log=2.88 ± 0.07 dex with DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34 ±1 to 95 ±4 M Jup. These results are consistent with previous measurements of the object. (shrink)

In what follows, I would like to trace Dietrich von Hildebrand’s thinking on the nature of axiological properties. Hildebrand begins his analysis from the phenomenology of what we experience as important and distinguishes three categories of importance: the subjectively satisfying, the value and the objective good of the person. He then moves on to metaphysical analysis to clarify whether the categories describe properties of objects and concludes that the foundation of all importance is value, the intrinsic preciousness. He also examines (...) the families of values and the relations between being and value. This analysis has an important completion in the investigation of the types of oughtness, which allow us to understand the foundation of norms. Hildebrand’s value theory makes it possible to address some crucial metaphysical problems, in particular the question of whether good ultimately triumphs. The epistemological premise of Hildebrand’s perspective, however, is the thesis that man experiences not only facts, but also values. (shrink)

Milton Friedman's famous methodological essay contains, along with much else, some strands that look as though they were taken from the “empirical-scientific” fabric described by Karl Popper. Think, for example, of Friedman's conviction that the way to test a hypothesis is to compare its implications with experience. Or of his more or less explicit espousal of the view that while no amount of facts can ever prove a hypothesis true, a single “fact” may refute it. Or of his assertion that (...) hypotheses are to be accepted only as provisionally true, and then only after repeated efforts to refute them have failed. The appearance of these Popperian ideas is not surprising. (shrink)

Papers produced for a conference of economists, economic methodologists and historians of economics, convened to reflect on the question of whether MSRP - the methodology of scientific research programmes - has proved useful in the light of 20 years' experience.

The paper uses the formalism of indexed categories to recover the proof of a standard final coalgebra theorem, thus showing existence of final coalgebras for a special class of functors on finitely complete and cocomplete categories. As an instance of this result, we build the final coalgebra for the powerclass functor, in the context of a Heyting pretopos with a class of small maps. This is then proved to provide models for various non-well-founded set theories, depending on the chosen axiomatisation (...) for the class of small maps. (shrink)

Non-well-founded trees are used in mathematics and computer science, for modelling non-well-founded sets, as well as non-terminating processes or infinite data structures. Categorically, they arise as final coalgebras for polynomial endofunctors, which we call M-types. We derive existence results for M-types in locally cartesian closed pretoposes with a natural numbers object, using their internal logic. These are then used to prove stability of such categories with M-types under various topos-theoretic constructions; namely, slicing, formation of coalgebras , and sheaves for an (...) internal site. (shrink)

This paper aims to investigate the nature of trust in others. First, we argue that the feeling of trust is an important phenomenon of human existence, but it is not the true root of trust in others. Trust is above all an intentional response of the person, one that must be motivated and adequate to its object. When we trust, we entrust a good that is important to another person so that he or she can take care of it. For (...) trust to be authentic, the other must be trustworthy. The feeling of trust, then, arises as a spontaneous response when we are aware that our trust is properly placed. When we have understood that trust is a response, it is possible to examine the ethical relevance of trust in others: trust fulfils morally relevant values, is the source of moral duties, introduces the person in the logic of self-giving and is nourished by a variety of moral virtues. (shrink)

The complexity of current social and environmental grand challenges generates many conflicts and tensions at the individual, organization and/or systems levels. Paradox theory has emerged as a promising way to approach such a complexity of corporate sustainability going beyond the instrumental business-case perspective and achieving superior sustainability performance. However, the fuzziness in the empirical use of the concept of “paradox” and the absence of a systems perspective limits its potential. In this paper, we perform a systematic review and content analysis (...) of the empirical literature related to paradox and sustainability, offering a useful guide for researchers who intend to adopt the concept of “paradox” empirically. Our analysis provides a comprehensive account of the uses of the construct - which allows the categorization of the literature into three distinct research streams: 1) paradoxical tensions, 2) paradoxical frame/thinking, and 3) paradoxical actions/strategies - and a comprehensive overview of the findings that emerge in each of the three. Further, by adopting a system perspective, we propose a theoretical framework that considers possible interconnections across the identified paradoxical meanings and different levels of analysis (individual, organizational, systems) and discuss key research gaps emerging. Finally, we reflect on the role a clear notion of paradox can have in supporting business ethics scholars in developing a more “immanent” evaluation of corporate sustainability, overcoming the current instrumental view. (shrink)

Hausman has argued that Mill in the Logic demands verification of qualified, inexact statements if they are to be considered lawlike. This puts Mill in line with a reasonable interpretation of what modern microeconomists are about, but requires the additional hypothesis that Mill abandoned his earlier stress on modal truth in his 1836 essay on the method of economics. The paper maintains that neither textual nor contextual evidence supports this hypothesis. Moreover, it is superfluous if one attends carefully to how (...) Mill conceived economic science, which occupied a peculiar, somewhat isolated place in his own views on the deductive method and on verification. (shrink)

This volume examines why Sir Karl Popper's view of empirical falsifiability as the distinguishing characteristic of science has found appeal among economists.

We interpret ceteris paribus conditions as the conditions necessary to conducting an experiment. "Ceteris paribus" is thus not a hold-all for whatever we do not know, but a listing of the various decisions taken in moving from a theoretical hypothesis to a testable proposition. The decisions range from modeling in a certain way to selecting a particular functional form or estimation technique. They embody best knowledge/best practice. Debate about the meaning and importance of any test result must center on these (...) decisions; hence they should be laid bare. We give a detailed example from recent macroeconomics, Lucas' test of the natural rate hypothesis. (shrink)

Regenerative Medicine promises to develop treatments to regrow healthy tissues and cure the physical body. One of the emerging developments within this field is regenerative implants, such as jawbone or heart valve implants, that can be broken down by the body and are gradually replaced with living tissue. Yet challenges for embodiment are to be expected, given that the implants are designed to integrate deeply into the tissue of the living body, so that implant and body become one. In this (...) paper, we explore how regenerative implants may affect the embodied experience of implant recipients. To this end, we take a phenomenological approach. First, we explore what insights the existing phenomenological and empirical literature on embodiment offers regarding the experience of illness and of living with regular (non-regenerative) implants and organ transplants. Second, we apply these insights to better understand how future implant recipients might experience living with regenerative implants. Third, we conclude that concepts and considerations from the existing phenomenological literature do not sufficiently address what it might be like to live with an implantable technology that, over time, becomes one with the living body. We argue that the interwovenness and intimate relationship of people living with regenerative implants should be understood in terms of ‘entanglement’. Entanglement allows us to explore the complexities of human-technology relations, acknowledging the inseparability of humans and implantable technologies. Our theoretical foundations regarding the role of embodiment may be tested empirically once more people will be living with regenerative implants. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Introduction to Creative Writing ContributionsAlexis Pauline Gumbs, Akasha Gloria Hull, Cheryl Clarke, doris diosa davenport, Cheryl Boyce-Taylor, Asha French, Sharon Bridgforth, Omi Osun Joni L. Jones, Alexis De Veaux, and Sokari Ekinewhen i first began to dream of creative writing contributions for this special issue of Feminist Studies celebrating the fortieth anniversaries of This Bridge Called My Back: Writings by Radical Women of Color and All the Women Are (...) White, All the Blacks Are Men, But Some of Us Are Brave: Black Women's Studies, I imagined a wealth of examples of the world and the work made possible by these two groundbreaking anthologies. I wondered what their editors and contributors were writing now. I wondered about the work of their students and people like me: those of us who understand everything we write as indebted to the path-making, silence-clearing, generative, and bodacious work of the participants in the miracles that are This Bridge Called My Back and But Some of Us Are Brave.But today as I reread the contributions that actually emerged from this process, I realize that my dream was too small. I imagined writing that would provide evidence of the ongoing impact made by these two anthologies. Instead, the creative writing in this special issue offers something more crucial and beautiful than I had imagined. These works are not mere evidence of a transformed world; these works are continuing to transform the world in urgent and visionary ways. As repeated again and again by participants in the 2022 celebration for the fortieth anniversary celebration of This Bridge Called My Back, the work that inspired these anthologies is not over. The writings featured in this issue not only show [End Page 198] how this work continues, but they feed, nurture, and provoke us as we honor our responsibility to transform this world.For example, when Akasha Gloria Hull, coeditor of But Some of Us Are Brave, shares her daily early morning meditative writing in "Writing and Rebirth: A Set of Journal Poems," we remember not only her fundamental work excavating the daily lives of Black women writers from the nineteenth century—most notably in Give Us Each Day, her edited book based on the diaries of poet Alice Dunbar Nelson—but also our own imperative. Hull's reflections on health challenges, interpersonal conflict, resurrection, collaboration, and writing itself remind us that our feminist praxis is impactful because of its dailyness. Those of us who wake up tomorrow will need to ask the same critical questions the editors of But Some of Us Are Brave asked of the fields of Black studies and women's studies. We will find surprises and repetitions in the days we meet, and then we will have to do it again.When we read two new prose poems by Cheryl Clarke, an original contributor to This Bridge Called My Back, we have an opportunity to time travel. In "Living as a Lesbian in the Archive of Style," we venture into a critical engagement with the term "hardcore lesbian," displacing the desires of the person who needs to classify others using that term with those of someone who has been hailed by it. Clarke's poem is a reminder that as we work in literary traditions and fields of study made possible by the revolutionary identity politics of an earlier era, we are still responsible for centering the experiences of those most impacted by our fluent and fluid naming practices. In "History," Clarke offers us a timely Black lesbian feminist lens on many iterations of responding to police violence, centering the perspective of a lesbian, her lover, and her lover's husband.The poem "On Being an hbcu Graduate, Teacher, Professor-Scholar at Stillman College, Tuscaloosa, AL, in May 2015" by doris diosa davenport—an original contributor to But Some of Us Are Brave—highlights the intimacy, hilarity, and poignancy of the daily work of intergenerational critical and creative praxis. In particular, she considers the context of institutions and regions that are sometimes excluded from the imaginary of how and where feminist work happens. davenport transmits the lessons and energy gained through her practice of thinking and gathering otherwise... (shrink)

Research involving transgender and gender diverse people (TGD) increased in the last years, mostly concerning healthcare associated to this population. Few studies dedicated their analysis to the impact of parental support on transgender people, even though this is an important aspect in creating a safe environment on which these individuals can build their identity. In addition, the link between family support, TGD identity and homelessness is not completely established. Thus, due to the specificities of the family context of TGD individuals, (...) the aim of this study is to investigate the association between family support and TGD in different moments of the process of gender affirmation. In addition, this study also aims to explore the relationship between a lack of social support and low self-esteem, home abandonment, and dwelling in the street. The survey was designed based on the TransPULSE project and was made available in electronic format. The sample was constituted of 423 TGD residents in two Brazilian states. A Structural Equation Model analysis suggested that the impact of gender affirmation status on homelessness was mediated by parental support, through self-esteem, and the need to move from home. The association between the status of the gender affirmation procedures, family support and self-esteem was significant and indicated that the further TGD individuals advanced in gender affirmation, the more self-esteem and family support they would have. The association between family support and self-esteem indicated that family support was associated with higher self-esteem. Low family support was associated with the willingness to move from home due to one’s TGD status and there was also a significant correlation between low self-esteem and the willingness to move from home due to one’s TGD status. Finally, homelessness was associated with the willingness to move with a large effect size. Limitations include the sample that was constituted by individuals with Internet access and who had more contact with TGD communities. The findings indicate directions for interventions involving TGD people and their families, considering the parental relationship as a critical variable to improve TGD quality of life in the process of gender affirmation. (shrink)

O’Loughlin and Thagard (2000) present a specific computational implementation of the idea that the problems encountered by a child with autism in classic False Belief tasks derive from a failure to maintain coherence among multiple propositions. They argue that this failure can be explained as a structural feature of a connectionist network attempting to maintain coherence. The current paper criticizes this implementation because it falsely predicts that the same children will have a parallel problem with the False Photographs task. The (...) fact that the content of representations makes a difference while the structure remains constant casts doubt upon their claim. (shrink)