3,757 research outputs found
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Thinking intuitively: the rich (and at times illogical) world of concepts
Intuitive knowledge of the world involves knowing what kinds of things have which properties. We express it in generalities such as “ducks lay eggs”. It contrasts with extensional knowledge about actual individuals in the world, which we express in quantified statements such as “All US Presidents are male”. Reasoning based on this intuitive knowledge, while highly fluent and plausible may in fact lead us into logical fallacy. Several lines of research point to our conceptual memory as the source of this logical failure. We represent concepts with prototypical properties, judging likelihood and argument strength on the basis of similarity between ideas. Evidence that our minds represent the world in this intuitive way can be seen in a range of phenomena, including how people interpret logical connectives applied to everyday concepts, studies of creativity and emergence in conceptual combination, and demonstrations of the logically inconsistent beliefs that people express in their everyday language
THE ROLE OF PROGESTERONE RECEPTOR MEMBRANE COMPONENT 1 IN RECEPTOR TRAFFICKING AND DISEASE
The progesterone receptor membrane component 1 (PGRMC1) is a multifunctional protein with a heme-binding domain that promotes cellular signaling via receptor trafficking, and is essential for some elements of tumor growth and metastasis. PGRMC1 is upregulated in breast, colon, lung and thyroid tumors. We expanded the analysis of PGRMC1 in the clinical setting, and report the first analysis of PGRMC1 in human oral cavity and ovarian tumors and found PGRMC1 to correlate with lung and ovarian cancer patient survival. Furthermore, we discovered a specific role for PGRMC1 in cancer stem cell viability. PGRMC1 directly associates with the epidermal growth factor (EGFR) in cancer cells, and we reviewed multiple signaling-associated pathways that are important in trafficking wild-type and mutant EGFR. To better understand the potential of PGRMC1 in receptor tyrosine kinase trafficking, we extended our research to the insulin receptor (IR). Changes in insulin signaling have been linked to multiple diseases, because IR plays a key role in glucose metabolism, cellular survival and proliferation. We found PGRMC1 to co-precipitate with IR in cancer cells and in an adipose model system. PGRMC1 increased IR plasma membrane levels in multiple cancer cell lines, and was also found to increase plasma membrane levels of two glucose transporters. Treatment with a PGRMC1 ligand significantly increased IR levels in human adipocytes. Moreover, we demonstrate that both insulin binding and glucose uptake are dependent on PGRMC1
Implementation of Change to Audits and Inspections Using Action Research
The audits and inspections process is a critical component related to a pharmaceutical firm’s compliance in the industry. To be out of compliance has significant ramifications both on the safety and purity of the firm’s products and its viability in the industry. Such firms are routinely audited by boards of health and customers that purchase the firm’s products to ensure they are in compliance with expected standards. The success of hosting the audits and inspection program is the first line of defense in demonstrating compliance.
To succeed at these audits and inspections changing with the times is a necessity. The implementation of change in an organization is fraught with challenges. Issues such determining who in the organization are the right people to discover, develop, and diffuse change is a complex process for management. This study will describe how the use of Liberating Structures and coaching were used to change the audits and inspection process for a major pharmaceutical firm. The changes are evaluated through the lens of Adaptive Space and the use of action research to integrate theory and action with the goal of answering the following questions: How might I get the right people on the team to implement a digital auditing process? How might I implement a digital auditing process?
In the time involved with the completion of this action research study, COVID-19 hit. This led me to another question: What modifications to the auditing process must be made as a result of COVID-19, how can I modify the auditing approach to incorporate site restrictions
The outcome of this effort transformed the auditing process at the firm and was implemented at the firm’s sites worldwide
Experimental Evidence for Quantum Structure in Cognition
We proof a theorem that shows that a collection of experimental data of
membership weights of items with respect to a pair of concepts and its
conjunction cannot be modeled within a classical measure theoretic weight
structure in case the experimental data contain the effect called
overextension. Since the effect of overextension, analogue to the well-known
guppy effect for concept combinations, is abundant in all experiments testing
weights of items with respect to pairs of concepts and their conjunctions, our
theorem constitutes a no-go theorem for classical measure structure for common
data of membership weights of items with respect to concepts and their
combinations. We put forward a simple geometric criterion that reveals the non
classicality of the membership weight structure and use experimentally measured
membership weights estimated by subjects in experiments to illustrate our
geometrical criterion. The violation of the classical weight structure is
similar to the violation of the well-known Bell inequalities studied in quantum
mechanics, and hence suggests that the quantum formalism and hence the modeling
by quantum membership weights can accomplish what classical membership weights
cannot do.Comment: 12 pages, 3 figure
Meaning-focused and Quantum-inspired Information Retrieval
In recent years, quantum-based methods have promisingly integrated the
traditional procedures in information retrieval (IR) and natural language
processing (NLP). Inspired by our research on the identification and
application of quantum structures in cognition, more specifically our work on
the representation of concepts and their combinations, we put forward a
'quantum meaning based' framework for structured query retrieval in text
corpora and standardized testing corpora. This scheme for IR rests on
considering as basic notions, (i) 'entities of meaning', e.g., concepts and
their combinations and (ii) traces of such entities of meaning, which is how
documents are considered in this approach. The meaning content of these
'entities of meaning' is reconstructed by solving an 'inverse problem' in the
quantum formalism, consisting of reconstructing the full states of the entities
of meaning from their collapsed states identified as traces in relevant
documents. The advantages with respect to traditional approaches, such as
Latent Semantic Analysis (LSA), are discussed by means of concrete examples.Comment: 11 page
Greened out: mitigating the impacts of eco-gentrification through community dialogue
Cities are increasingly employing green infrastructure, defined as a network of multi-functional open spaces within cities and between cities – including green corridors, green streets, formal parks and street trees – to promote resilience and provide clean air, flood protection and erosion control. Yet there is a growing link between these efforts and rising property values and – in some cities, including Washington, DC – displacement. This history of greening and subsequent displacement can hinder successful green-infrastructure implementation. The geographical areas with the greatest need for these amenities and other resilience strategies are often those with high concentrations of low-income, racial minorities who have traditionally been disenfranchised from local planning and development processes due to a lack of knowledge and limited access, as well as institutional racism. In these areas, the perception of green infrastructure is that of something planned by others, for others, with little direct benefit to the community. This exploratory research, which examines lived experiences, builds upon the quantitative documentation of gentrification and demographic shifts in Washington, DC. Through a series of listening sessions, the study explores residents’ experiences of green infrastructure, gentrification and civic engagement in their community. The study uncovers ways in which policymakers and planners can increase support for and the success of green-infrastructure implementation by amplifying the voices of stakeholders, including communities with vulnerable populations, in the planning process
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Effects of classification context on categorization in natural categories
The patterns of classification of borderline instances of eight common taxonomic categories were examined under three different instructional conditions to test two predictions: first, that lack of a specified context contributes to vagueness in categorization, and second, that altering the purpose of classification can lead to greater or lesser dependence on similarity in classification. The instructional conditions contrasted purely pragmatic with more technical/quasi-legal contexts as purposes for classification, and these were compared with a no-context control. The measures of category vagueness were between-subjects disagreement and within-subjects consistency, and the measures of similarity based categorization were category breadth and the correlation of instance categorization probability with mean rated typicality, independently measured in a neutral context. Contrary to predictions, none of the measures of vagueness, reliability, category breadth, or correlation with typicality were generally affected by the instructional setting as a function of pragmatic versus technical purposes. Only one subcondition, in which a situational context was implied in addition to a purposive context, produced a significant change in categorization. Further experiments demonstrated that the effect of context was not increased when participants talked their way through the task, and that a technical context did not elicit more all-or-none categorization than did a pragmatic context. These findings place an important boundary condition on the effects of instructional context on conceptual categorization
Deformation and Flexibility Equations for Idealized ARIS Umbilicals, Under Planar End-Loading Conditions
The International Space Station (ISS) relies on the Active Rack Isolation System (ARIS) as the central component of an integrated, station-wide strategy to isolate microgravity space-science experiments. ARIS uses electromechanical actuators to isolate an International Standard Payload Rack (ISPR) from disturbances due to the motion of the ISS. Disturbances to microgravity experiments on ARIS-isolated racks are primarily transmitted via the ARIS power and vacuum umbilicals. Recent experimental tests indicate that these umbilicals resonate at frequencies outside the ARIS controller's bandwidth. at levels of potential concern for certain microgravity experiments. Reduction in the umbilical resonant frequencies could help to address this issue. This paper develops equations for the in-plane deflections and flexibilities of an idealized umbilical (thin, flexible, cantilever beam) under end-point, in-plane loading (inclined-force and moment). The effect of gravity is neglected due to the on:orbit application. The analysis assumes an initially straight. cantilevered umbilical with uniform cross-section. which undergoes large deflections with no plastic deformation, such that the umbilical terminus remains in a single quadrant and the umbilical slope changes monotonically. The analysis is applicable to the ARIS power and vacuum umbilicals. under the indicated assumptions
Embracing Deference
A fundamental conceptual problem has long dogged discussions about scientific and other expert evidence in the courtroom. In American law, the problem was most famously posed by Judge Learned Hand, who asked: [H]ow can the jury judge between two statements each founded upon an experience confessedly foreign in kind to their own? It is just because they are incompetent for such a task that the expert is necessary at all. This puzzle, sometimes known as the expert paradox, is quite general. It applies not only to the jury as factfinder, but also to the judge as gate- keeper under the Daubert v. Merrell Dow Pharmaceuticals, Inc. regime and Federal Rule of Evidence 702. It also applies when there is no jury at all, whether in a bench trial, administrative proceeding, or civil law jurisdiction. When it comes to scientific and other specialized knowledge, legal actors are inevitably non-experts. And if legal actors are faced with the so- called battle of the experts, how are they to decide between the warring experts? After all, to quote Judge Hand again, [i]t is just because they are incompetent for such a task that the expert is necessary at all. As one of us has previously argued, because of this epistemic competency problem, the Daubert approach to expert evidence is a mistake. The solution to the problem of expert evidence is not judicial gatekeeping, but rather to change the substantive question asked of legal actors
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