Bunge’s Mathematical Structuralism Is Not a Fiction

In this paper, I explore Bunge’s fictionism in philosophy of mathematics. After an overview of Bunge’s views, in particular his mathematical structuralism, I argue that the comparison between mathematical objects and fictions ultimately fails. I then sketch a different ontology for mathematics, based on Thomasson’s metaphysical work. I conclude that mathematics deserves its own ontology, and that, in the end, much work remains to be done to clarify the various forms of dependence that are involved in mathematical knowledge, in particular its dependence on mental/brain states and material objects

Admissibility in Federal Courts of Evidence Wrongfully Obtained by Persons Other Than Federal Officers or by Cooperation Between Such Persons and Federal Officers

It is a firmly established rule in the federal courts, that evidence obtained by an illegal search and seizure, within the purview of the Fourth Amendment to the Constitution of the United States, is not admissible providing timely steps are taken for its exclusion or return. However, that rule is limited in its application to federal officers or agents, so that quite generally it may be said, that evidence obtained by private,mdividuals or municipal or state officers, acting as such, is admissible in federal courts, regardless of the manner in which it is obtained

Antitrust and Market Power

The antitrust laws have been described as the Magna Carta of free enterprise

Exploring the Relationship Between Depression and Resilience in Survivors of Childhood Trauma

Although experiences of trauma are common, reactions vary due to a host of biopsychosocial and cultural factors that influence the individual reaction to the trauma (Nakai et al., 2015). One such factor is resiliency, the capability to adapt in adverse environmental circumstances (Basim & Cetin, 2011). This study used hierarchical multiple regression to examine the relationships between childhood trauma, recent experiences of depression, and resilience in adult university students. This study also examined the possible moderating effects on depression by resilience. Participants completed the Childhood Trauma Questionnaire, Connor-Davidson Resilience scale, and PROMIS Depression survey. Small significant relationships were found for several of the variables, including: childhood trauma and ethnicity, childhood trauma and age, childhood trauma and income, childhood trauma and education, childhood trauma and resilience, childhood trauma and depression, depression and ethnicity, depression and education, depression and income, resilience and gender, resilience and income, and resilience and trauma. The results of this study also suggest resilience has a moderate inverse relationship with depression. The data also confirmed the existing literature which noted that adults who have experienced trauma in childhood have significantly higher rates of depression in adulthood than adults who have not experienced trauma

Design and fabrication of a low-specific-weight parabolic dish solar concentrator

A segmented design and fabrication and assembly techniques were developed for a 1.8 m (6 ft) diameter parabolic concentrator for space application. This design and these techniques were adaptable to a low cost, mass-produced concentrator. Minimal machining was required. Concentrator segments of formed magnesium were used. The concentrator weighed only 1.6 kg sq m (0.32 lbm/sq ft)

Alien Registration- Caron, Marie A. (Lewiston, Androscoggin County)

https://digitalmaine.com/alien_docs/28996/thumbnail.jp

A Knowledge Compilation Map

We propose a perspective on knowledge compilation which calls for analyzing different compilation approaches according to two key dimensions: the succinctness of the target compilation language, and the class of queries and transformations that the language supports in polytime. We then provide a knowledge compilation map, which analyzes a large number of existing target compilation languages according to their succinctness and their polytime transformations and queries. We argue that such analysis is necessary for placing new compilation approaches within the context of existing ones. We also go beyond classical, flat target compilation languages based on CNF and DNF, and consider a richer, nested class based on directed acyclic graphs (such as OBDDs), which we show to include a relatively large number of target compilation languages

Teaching Creativity Across Disciplines at Ontario Universities

While a wide variety of publications have suggested that the development of student creativity should be an important objective for contemporary universities, information about how best to achieve this goal across a range of disciplinary contexts is nonetheless scant. The present study aimed to begin to fill this gap by gathering data (via an electronic survey instrument) about how the teaching and learning of creativity are perceived and enacted by instructors in different disciplines at Ontario universities. Results indicated points of both convergence and divergence between respondents from different fields in terms of their understandings of the place of creativity within courses and programs, and in terms of strategies they reported using to enable creativity in their students. We discuss the implications of these findings, including the ways in which the data speak to ongoing debates about the role of disciplines within teaching, learning, and creativity more broadly.  Bien qu’une grande diversité de publications suggère que le développement de la créativité chez l’étudiant devrait être un objectif important pour les universités contemporaines, l’information quant à la meilleure façon d’atteindre un tel objectif parmi tout un éventail de contextes disciplinaires demeure insuffisante. La présente étude vise à commencer à combler cet écart en rassemblant des données relatives aux façons dont l’enseignement et l’apprentissage de la créativité sont perçus et mis en œuvre par les instructeurs de diverses disciplines auprès des universités de l’Ontario. Les résultats ont indiqué à la fois des points de convergence et de divergence entre les répondants provenant de secteurs différents en ce qui a trait à leur compréhension de la place de la créativité dans les cours et les programmes, et en ce qui a trait aux stratégies qu’ils déclarent utiliser pour susciter la créativité chez leurs étudiants.  Nous discutons des implications de ces résultats, y compris de la façon dont les données se révèlent aux débats actuels qui portent sur le rôle des disciplines et, de façon plus générale, sur l’enseignement, l’apprentissage et la créativité

A combined oscillation cycle involving self-excited thermo-acoustic and hydrodynamic instability mechanisms

The paper examines the combined effects of several interacting thermo-acoustic and hydrodynamic instability mechanisms that are known to influence self-excited combustion instabilities often encountered in the late design stages of modern low-emission gas turbine combustors. A compressible large eddy simulation approach is presented, comprising the flame burning regime independent, modeled probability density function evolution equation/stochastic fields solution method. The approach is subsequently applied to the PRECCINSTA (PREDiction and Control of Combustion INSTAbilities) model combustor and successfully captures a fully self-excited limit-cycle oscillation without external forcing. The predicted frequency and amplitude of the dominant thermo-acoustic mode and its first harmonic are shown to be in excellent agreement with available experimental data. Analysis of the phase-resolved and phase- averaged fields leads to a detailed description of the superimposed mass flow rate and equivalence ratio fluctuations underlying the governing feedback loop. The prevailing thermo-acoustic cycle features regular flame liftoff and flashback events in combination with a flame angle oscillation, as well as multiple hydrodynamic phenomena, i.e., toroidal vortex shedding and a precessing vortex core. The periodic excitation and suppression of these hydrodynamic phenomena is confirmed via spectral proper orthogonal decomposition and found to be controlled by an oscillation of the instantaneous swirl number. Their local impact on the heat release rate, which is predominantly modulated by flame-vortex roll- up and enhanced mixing of fuel and oxidizer, is further described and investigated. Finally, the temporal relationship between the flame “surface area,” flame-averaged mixture fraction, and global heat release rate is shown to be directly correlated