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Type II DNA topoisomerase activity is required to change DNA topology. It is important in the relaxation of DNA supercoils generated by cellular processes, such as transcription and replication, and it is essential for the condensation of chromosomes and their segregation during mitosis. In mammals this activity is derived from at least two isoforms, termed DNA topoisomerase IIα and β. The α isoform is involved in chromosome condensation and segregation, whereas the role of the β isoform is not yet clear. (...) DNA topoisomerase IIβ was first reported in 1987. Here we review the research on DNA topoisomerase IIβ over the last 10 years. BioEssays 20:215–226, 1998.© 1998 John Wiley & Sons, Inc. (shrink)

Background At the beginning of the coronavirus (Covid-19) pandemic, many non-Covid healthcare services were suspended. In April 2020, the Department of Health in England mandated that non-Covid services should resume, alongside the continuing pandemic response. This ‘resetting’ of healthcare services created a unique context in which it became critical to consider how ethical considerations did (and should) underpin decisions about integrating infection control measures into routine healthcare practices. We draw on data collected as part of the ‘NHS Reset Ethics’ project, (...) which explored the everyday ethical challenges of resetting England’s NHS maternity and paediatrics services during the pandemic. Methods Healthcare professionals and members of the public participated in interviews and focus group discussions. The qualitative methods are reported in detail elsewhere. The focus of this article is our use of Frith’s symbiotic empirical ethics methodology to work from our empirical findings towards the normative suggestion that clinical ethics should explicitly attend to the importance of relationships in clinical practice. This methodology uses a five-step approach to refine and develop ethical theory based on a naturalist account of ethics that sees practice and theory as symbiotically related. Results The Reset project data showed that changed working practices caused ethical challenges for healthcare professionals, and that infection prevention and control measures represented harmful barriers to the experience of receiving and offering care. For healthcare professionals, offering care as part of a relational interaction was an ethically important dimension of healthcare delivery. Conclusions Our findings suggest that foregrounding the importance of relationships across a hospital community will better promote the ethically important multi-directional expression of caring between healthcare professionals, patients, and their families. We offer two suggestions for making progress towards such a relational approach. First, that there is a change of emphasis in clinical ethics practice to explicitly acknowledge the importance of the relationships (including with their healthcare team) within which the patient is held. Second, that organisational decision-making should take into account the moral significance afforded to caring relationships by healthcare professionals, and the role such relationships can play in the negotiation of ethical challenges. (shrink)

The ArgumentIt is often observed by historians of postwar American art that painters and sculptors of the 1960s sought a more mechanized “look” for their art. I argue that the changes reflected in the art have their source in a deeper shift – a shift at the level of production, expressed in new studio practices as well as in the space of the artworks themselves.In the period immediately before, during, and after World War II, the dominant topos of the American (...) artist was that of a solitary genius, alone in his studio, sole witness to the miraculous creation of his art. I demonstrate that artists of the 1960s, against this backdrop of heroic modernism, engaged in a different rhetoric and practice, one based on the models of industry and business. The studio of Andy Warhol, named the “Factory,” is viewed as apodictic of this great change, with its rudimentary assembly line and highly social mode of production.The change in practice instantiated in Warhol's Factory is significant in and of itself, but I argue further that it expressed itself in the “place of knowledge” – the space within Warhol's paintings and objects, and the newly social space in which they signify. The context for that signification thus becomes crucial to our understanding of the “Warhol phenomenon” celebrated in popular and arthistorical texts. The ambivalencies embedded in Warhol's Factory, where the artist's role oscillated between manager and proletarian worker, are seen as a function of their context. Conflicting signals are also broadcast by the works of art, which speak in the dialect of mass production with the accent of the irreplaceably unique. (shrink)

Recent literature on J. G. Fichte's ethical philosophy has tended to focus on a handful of interpretive issues while simultaneously emphasizing his under-appreciated relevance to contemporary moral theory. In this regard, Kosch's book on Fichte's ethics is similar to other recent publications. In almost every other way, however, it is unique. Kosch uses her talent for clear argumentation to propose several theses that have little precedent in Fichte scholarship.Her book's goal is two-fold: first, to fill a "yawning gap" in Fichte (...) scholarship by addressing aspects of Fichte's ethical system that have been misinterpreted or overlooked, and second, to present Fichte's ethical work to philosophers "who would be... (shrink)

Fichte’s Ethical Thought follows a format familiar to those who have read Allen Wood’s books on the ethical thought of Immanuel Kant and G. W. F. Hegel: Wood integrates Johann Gottlieb Fichte’s work into topical chapters, each discussing an important component of Fichte’s ethical system. The text he focuses on, of course, is Fichte’s 1798 System of Ethics, but Fichte scholars will likely be pleased to find that Wood discusses a wide range of Fichte’s Jena-era writings. Wood makes use of (...) Addresses to the German Nation, The Closed Commercial State, and earlier works such as Some Lectures Concerning the Scholar’s Vocation, especially in the final two chapters, which cover Fichte’s thought on public life, the... (shrink)

Experience offers a reading experience like no other. A heat-sensitive cover by Olafur Eliasson reveals words, colors, and a drawing when touched by human hands. Endpapers designed by Carsten Holler are printed in ink containing carefully calibrated quantities of the synthesized human pheromones estratetraenol and androstadienone, evoking the suggestibility of human desire. The margins and edges of the book are designed by Tauba Auerbach in complementary colors that create a dynamically shifting effect when the book is shifted or closed. When (...) the book is opened, bookmarks cascade from the center, emerging from spider web prints by Tomas Saraceno. Experience produces experience while bringing the concept itself into relief as an object of contemplation. The sensory experience of the book as a physical object resonates with the intellectual experience of the book as a container of ideas. Experience convenes a conversation with artists, musicians, philosophers, anthropologists, historians, and neuroscientists, each of whom explores aspects of sensorial and cultural realms of experience. The texts include new essays written for this volume and classic texts by such figures as William James and Michel Foucault -- Provided by the publisher. (shrink)

Discussion about whether adolescents ought to be able to consent for their own vaccines long predates the COVID-19 pandemic. Providers have been counseling self-identified vaccine skeptics for year...

We define an easily verifiable notion of an atomic formula having uniformly bounded arrays in a structure M. We prove that if T is a complete L-theory, then T is mutually algebraic if and only if there is some model M of T for which every atomic formula has uniformly bounded arrays. Moreover, an incomplete theory T is mutually algebraic if and only if every atomic formula has uniformly bounded arrays in every model M of T.

Corporate reputation is decisive for stakeholders’ supporting or repelling behavior and, therefore, one of firms’ most valuable intangible resources. Drawing on signaling theory, this paper focuses on the usefulness of voluntarily provided corporate reputation disclosures (CRDs) and examines their impact on stakeholders’ attitudinal and behavioral outcomes. Our experimental vignette studies reveal that CRDs reduce stakeholders’ information asymmetries, which positively affects perceived organizational performance and corporate reputation as well as stakeholders’ purchase, investment, and employment intentions. The relationships between CRDs and stakeholders’ (...) behavioral intentions are sequentially mediated by changes in the perceived organizational performance and corporate reputation. This implies that stakeholders use the signals transmitted by CRDs to adjust their perceptions of a firm’s organizational performance and corporate reputation, which ultimately induces their behavioral outcomes. Overall, our empirical results show the usefulness of CRDs for firms in effectively developing stakeholder relationships and, thereby, contributing to assure their going concern. For stakeholders, CRDs improve efficiency in evaluating a firm’s future development. (shrink)

Several studies have demonstrated that individuals’ ability to perceive a speech sound contrast is related to the production of that contrast in their native language. The theoretical account for this relationship is that speech perception and production have a shared multimodal representation in relevant sensory spaces. This gives rise to a prediction that individuals with more narrowly defined targets will produce greater separation between contrasting sounds, as well as lower variability in the production of each sound. However, empirical studies that (...) tested this hypothesis, particularly with regard to variability, have reported mixed outcomes. The current study investigates the relationship between perceptual ability and production ability, focusing on the auditory domain. We examined whether individuals’ categorical labeling consistency for the American English /ε/–/æ/ contrast, measured using a perceptual identification task, is related to distance between the centroids of vowel categories in acoustic space and to two measures of production variability: the overall distribution of repeated tokens for the vowels and the proportional within-trial decrease in variability as defined as the magnitude of self-correction to the initial acoustic variation of each token. No significant associations were found between categorical labeling consistency and vowel contrast distance, between categorical labeling consistency and area of the ellipse, or between categorical labeling consistency and centering ratio. These null results suggest that the perception-production relation may not be as robust as suggested by a widely adopted theoretical framing in terms of the size of auditory target regions. However, the present results may also be attributable to choices in implementation that should be subject to further investigation. (shrink)

Clinical ethics consultants face a wide range of ethical dilemmas that require broad knowledge and skills. Although there is considerable overlap with the approach to adult consultation, ethics consultants must be aware of differences when they work with infant, pediatric, and adolescent cases. This article addresses unique considerations in the pediatric setting, reviews foundational theories on parental authority, suggests practical approaches to pediatric consultation, and outlines current available resources for clinical ethics consultants who wish to deepen their skills in this (...) area. (shrink)

This article reviews the phenomena of disordered discourse often manifested in schizophrenia. It argues that the Structure Building Framework, a model of the general cognitive processes and mechanisms underlying discourse, can be used to account for these phenomena. According to the Structure Building Framework, the goal of comprehension is to build coherent mental representations or structures. Building a mental structure involves several component subprocesses: laying a foundation, mapping relevant information onto that foundation, and shifting to initiate a new substructure. Building (...) a mental structure also involves at least two general cognitive mechanisms: enhancement of relevant activation and suppression of irrelevant or inappropriate activation. We suggest that schizophrenics who exhibit verbose disordered discourse have inefficient suppression mechanisms, are impaired in laying a foundation, and tend to shift too often. We also speculate that schizophrenics who exhibit impoverished disordered discourse have inefficient enhancement mechanisms and are impaired with the cognitive process of mapping. (shrink)

The content of dreams and changes to the self were investigated in students moving to University. In study 1, 20 participants completed dream diaries and memory tasks before and after they had left home and moved to university, and generated self images, “I am…” statements , reflective of their current self. Changes in “I ams” were observed, indicating a newly-formed ‘university’ self. These self, images and related autobiographical knowledge were found to be incorporated into recent dreams but not into dreams (...) from other periods. Study 2 replicated these findings in a different sample . We suggest that these data reflect a period of self-consolidation in which new experiences and self images are incorporated into autobiographical memory knowledge structures representing personal goals during sleep. (shrink)

Inspired by Voltaire's advice that a text needs to be concise to have real influence, this anthology contains fiery extracts by forty eighteenth-century authors, from the most famous philosophers of the age to those whose brilliant writings are less well-known. These passages are immensely diverse in style and topic, but all have in common a passionate commitment to equality, freedom, and tolerance. Each text resonates powerfully with the issues our world faces today. Tolerance was first published by the Société française (...) d'étude du dix-huitième siècle (the French Society for Eighteenth-Century Studies) in the wake of the Charlie Hebdo assassinations in January 2015 as an act of solidarity and as a response to the surge of interest in Enlightenment values. With the support of the British Society for Eighteenth-Century Studies, it has now been translated by over 100 students and tutors of French at Oxford University."--Publisher's website. (shrink)

Results: We analyzed 1,402 surveys and 15 in-depth interviews. Many (32%) CL participants reported greater difficulty refilling medications and a minority (14%) reported greater difficulty accessing HIV care during the pandemic. Most (99%) Opt4Mamas participants reported no difficulty refilling medications or accessing HIV/pregnancy care. Among the CL participants, older women were less likely (aOR = 0.95, 95% CI: 0.92–0.98) and women with more children were more likely (aOR = 1.13, 95% CI: 1.00–1.28) to report difficulty refilling medications. Only 2% of (...) CL participants reported greater difficulty managing FP and most (95%) reported no change in likelihood of using FP or desire to get pregnant. Qualitative analysis revealed three major themes: (1) adverse organizational/economic implications of the pandemic, (2) increased importance of pregnancy prevention during the pandemic, and (3) fear of contracting COVID-19. (shrink)

UK-based research conducted within a healthcare setting generally requires approval from the National Research Ethics Service. Research ethics committees are required to assess a vast range of proposals, differing in both their topic and methodology. We argue the methodological benchmarks with which research ethics committees are generally familiar and which form the basis of assessments of quality do not fit with the aims and objectives of many forms of qualitative inquiry and their more iterative goals of describing social processes/mechanisms and (...) making visible the complexities of social practices. We review current debates in the literature related to ethical review and social research, and illustrate the importance of re-visiting the notion of ethics in healthcare research. (shrink)

Engineers encounter difficult ethical problems in their practice and in research. In many ways, these problems are like design problems: they are complex, often ill-defined; resolving them involves an iterative process of analysis and synthesis; and there can be more than one acceptable solution. This book offers a real-world, problem-centered approach to engineering ethics, using a rich collection of open-ended scenarios and case studies to develop skill in recognizing and addressing ethical issues.