Dynamic Considerations for Control of Closed Life Support Systems

Reliability of closed life support systems depend on their ability to continue supplying the crew's needs during perturbations and equipment failures. The dynamic considerations interact with the basic static design through the sizing of storages, the specification of excess capacities in processors, and the choice of system initial state. A very simple system flow model was used to examine the possibilities for system failures even when there is sufficient storage to buffer the immediate effects of the perturbation. Two control schemes are shown which have different dynamic consequences in response to component failures

Study of controlled diffusion stator blading. 1. Aerodynamic and mechanical design report

Pratt & Whitney Aircraft is conducting a test program for NASA in order to demonstrate that a controlled-diffusion stator provides low losses at high loadings and Mach numbers. The technology has shown great promise in wind tunnel tests. Details of the design of the controlled diffusion stator vanes and the multiple-circular-arc rotor blades are presented. The stage, including stator and rotor, was designed to be suitable for the first-stage of an advanced multistage, high-pressure compressor

Epistemic dimensions of gaslighting: peer-disagreement, self-trust, and epistemic injustice

Miranda Fricker has characterized epistemic injustice as “a kind of injustice in which someone is wronged specifically in her capacity as a knower” (2007, Epistemic injustice: Power & the ethics of knowing. Oxford: Oxford University Press, 20). Gaslighting, where one agent seeks to gain control over another by undermining the other’s conception of herself as an independent locus of judgment and deliberation, would thus seem to be a paradigm example. Yet, in the most thorough analysis of gaslighting to date (Abramson, K. 2014. “Turning up the lights on gaslighting.” Philosophical Perspectives 28, Ethics: 1– 30), the idea that gaslighting has crucial epistemic dimensions is rather roundly rejected on grounds that gaslighting works by means of a strategy of assertion and manipulation that is not properly understood in epistemic terms. I argue that Abramson’s focus on the gaslighter and on the moral wrongness of his actions leads her to downplay ways in which gaslighters nevertheless deploy genuinely epistemic strategies, and to devote less attention to the standpoint and reasoning processes of the victim, for whom the experience of gaslighting has substantial and essential epistemic features. Taking these features into account reveals that all gaslighting has epistemic dimensions and helps to clarify what resistance to gaslighting might look like

Breaking the Epistemic Pornography Habit: Cognitive Biases, Digital Discourse Environments, and Moral Exemplars

Purpose: This paper analyzes some of the epistemically pernicious effects of use of the Internet and social media. In light of this analysis, it introduces the concept of epistemic pornography and argues that epistemic agents both can and should avoid consuming and sharing epistemic pornography. Design/Methodology/Approach: The paper draws on research on epistemic virtue, cognitive biases, social media use and its epistemic consequences, Fake News, paternalistic nudging, pornography, moral philosophy, moral elevation, and moral exemplar theory to analyze the epistemically pernicious effects of the Internet and social media. Findings: There is a growing consensus that Internet and social media activate and enable human cognitive biases leading to what are here called failures of epistemic virtue . Common formulations of this problem involve the concept of Fake News , and strategies for responding to the problem often have much in common with paternalistic nudging . While Fake News is a problem and the nudging approach holds out promise, the paper concludes that both place insufficient emphasis on the agency and responsibility of users of the Internet and social media, and that nudging represents a necessary but not sufficient response. Originality/Value: The essay offers the concept of epistemic pornography as a concept distinct from but related to fake news - distinct precisely because it places greater emphasis on personal agency and responsibility - and, following recent literature on moral elevation and moral exemplars, as a heuristic that agents might use to economize their efforts at resisting irrational cognitive biases and attempting to live up to their epistemic duties

Resisting Hyper-Partisan Silencing: Arendt on Political Persuasion through Exemplification and Truth-Telling as Action

A central frustration of recent political discourse is the consistent reduction of politically relevant factual and critical speech to mere expression of partisan commitment. Partisans of “the other side”—members of the other tribe—are viewed as de facto wrong, because partisans, even when their speech invokes mere facts or purportedly shared political principles. Ideally, democratic political discourse operates along at least two central dimensions: a dimension of shared factual, historical, and political assumptions, and a more contested dimension of interpretation, prioritization, and evaluation that results in diverse and often competing understandings of what is good, and so of what is best to collectively pursue. Debates among advocates of competing conceptions of the good and partisans of diverse world views identifiable in terms of the second dimension are, on this picture, constrained and grounded by the shared factual and political commitments of the first, thus ensuring a meaningful basis for ongoing political engagement. While there is little reason to think this ideal has ever been perfectly realized, in recent political discourse statements that events have occurred, drugs are effective, or transparency is important in political conduct cannot seem to get uptake except as mere expressions of political partisanship any more than an actor on stage trying to convince her audience of the danger of a real fire that has broken out in the theater can get uptake for this claim except as an expression in a theatrical performance. In both cases, the real content and discursive intent of speech is undermined by the context in which it occurs. In the case of the actor on stage, the appropriate rules for uptake and interpretation are being followed, just to unfortunate effect. However, in the case of political discourse something seems to be wrong with the rules for uptake and interpretation that have come to dominate in many quarters. This essay relies on recent discussions of silencing and epistemic injustice to introduce the ideas of partisan silencing and hyper-partisan silencing in an attempt to say more precisely what has gone wrong with the rules for uptake and interpretation in political discourse. It then relies on Hannah Arendt’s analyses of truth and lies in politics to connect these phenomena to underlying features of political action and speech. Conditions of partisan and hyperpartisan silencing turn out to be a natural, if not inevitable, consequence of the relationship of truth-telling and deception to political action itself as Arendt understands this. Finally, the essay elaborates on two suggestive passages from Arendt’s 1967 essay “Truth and Politics” to propose potential strategies for resisting conditions of hyperpartisan silencing. Because hyper-partisan silencing itself imposes a certain discursive logic, there are kinds of political speech and action that might succeed in being understood as sincere and so in being persuasive—even in the face of hyper-partisan silencing—precisely because they challenge the assumptions that underpin this discursive logic itself

Screening for Alcohol use/abuse in the Primary Care Setting using the AUDIT-C and SBIRT (Screening, Brief Intervention, Referral to Treatment)

PURPOSE: The purpose of this study was to examine the feasibility of alcohol screening in the primary care setting to detect alcohol abuse or misuse using the AUDIT-C standardized screening tool and SBIRT. METHODS: This study design was a Quasi-Experimental intervention, one group post-test. Data was collected via retrospective chart review from the electronic medical records by the type of office visit; either new patient initial visit or annual well visit. The patient sample consisted of 25 participants for the study period of September 19th through October 10th, 2017. RESULTS: There were 37 patients eligible to participate in the study; annual visits or new patients. Two APRN providers tested the feasibility of using the tool. Of the 37 patients, 25 (n=25) received the AUDIT-C tool, and 23 scores were documented by the provider. Provider compliance in documenting was 92%. The sample was 80% female the mean age was 42.6. Almost nine percent scored high enough for a Brief Intervention. CONCLUSION: Feasibility of the AUDIT-C use in the primary care setting was shown. Providers were satisfied and felt they took away essential information they would not have otherwise had. More studies need to be done on a larger scale, incorporating more providers and more locations

Roland Breeur, Lies – Imposture – Stupidity. Vilinius: Jonas ir Jokūbas 2019

As the title suggests, Breeur’s project is to discuss three key ideas: lies, stupidity, and imposture. The book is organized into two parts (I. Lies and Stupidity; II. Imposture) of two chapters each, followed by an appendix. The individual chapters and sub-sections are well-written and philosophically sophisticated. However, the reader will be disappointed if they expect a sustained analysis of the relations among the book’s titular ideas or a unified account of their role in the breakdown of respect for truth more broadly. Breeur’s approach is more episodic, laying out valuable considerations and enticing formulations, but often breaking off before spelling out their full implications or connecting them to previous discussions in the book. His discussion clearly opens up these additional avenues of thought, but the task of going down them is left largely to the reader. This review briefly takes up each of Breeur’s themes: lies, stupidity, and impostur

A study of pupil station and room utilization of class rooms of fourteen high schools located in Lyon and Wabaunsee Counties

Thesis (M.A.Ed.)--University of Kansas, Education, 1930

Application of control theory to dynamic systems simulation

The application of control theory is applied to dynamic systems simulation. Theory and methodology applicable to controlled ecological life support systems are considered. Spatial effects on system stability, design of control systems with uncertain parameters, and an interactive computing language (PARASOL-II) designed for dynamic system simulation, report quality graphics, data acquisition, and simple real time control are discussed

An approach to the preliminary evaluation of Closed Ecological Life Support System (CELSS) scenarios and control strategies

Life support systems for manned space missions are discussed. A scenario analysis method was proposed for the initial step of comparing possible partial or total recycle scenarios. The method is discussed in detail