The clustering of radio galaxies at z~0.55 from the 2SLAQ LRG survey

We examine the clustering properties of low-power radio galaxies at redshift 0.4<z<0.8, using data from the 2SLAQ Luminous Red Galaxy (LRG) survey. We find that radio-detected LRGs (with optical luminosities of 3-5L* and 1.4GHz radio powers between 1e24 and 1e26 W/Hz) are significantly more clustered than a matched sample of radio-quiet LRGs with the same distribution in optical luminosity and colour. The measured scale length of the 2pt auto-correlation function, r0, is 12.3+/-1.2 1/h Mpc and 9.02+/-0.52 1/h Mpc for the radio-detected and radio-quiet samples respectively. Using the halo model framework we demonstrate that the radio-loud LRGs have typical halo masses of 10.1+/-1.4 x10^13 1/h M_sun compared to 6.44+/-0.32 x10^13 1/h M_sun for the radio-quiet sample. A model in which the radio-detected LRGs are almost all central galaxies within haloes provides the best fit, and we estimate that at least 30% of LRGs with the same clustering amplitude as the radio-detected LRGs are currently radio-loud. Our results imply that radio-loud LRGs typically occupy more massive haloes than other LRGs of the same optical luminosity, so the probability of finding a radio-loud AGN in a massive galaxy at z~0.55 is influenced by the halo mass in addition to the dependence on optical luminosity. If we model the radio-loud fraction of LRGs, F_rad, as a function of halo mass M, then the data are well-fitted by a power law of the form F_rad \propto M^(0.65+/-0.23). The relationship between radio emission and clustering strength could arise either through a higher fuelling rate of gas onto the central black holes of galaxies in the most massive haloes (producing more powerful radio jets) or through the presence of a denser IGM (providing a more efficient working surface for the jets, thus boosting their radio luminosity).Comment: Accepted for publication in MNRA

Thick Concepts, Non-Cognitivism, and Wittgenstein’s Rule-Following Considerations

Non-cognitivists claim that thick concepts can be disentangled into distinct descriptive and evaluative components and that since thick concepts have descriptive shape they can be mastered independently of evaluation. In Non-Cognitivism and Rule-Following, John McDowell uses Wittgenstein’s rule-following considerations to show that such a non-cognitivist view is untenable. In this paper I do several things. I describe the non-cognitivist position in its various forms and explain its driving motivations. I then explain McDowell’s argument against non-cognitivism and the Wittgensteinian considerations upon which it relies, because this has been sufficiently misunderstood by critics and rarely articulated by commentators. After clarifying McDowell’s argument against non-cognitivism, I extend the analysis to show that commentators of McDowell have failed to appreciate his argument and that critical responses have been weak. I argue against three challenges posed to McDowell, and show that the case of thick concepts should lead us to reject non-cognitivism

The importance of poetry, hip-hop, and philosophy for an enlisted aviator in the USAF (2000-2004) flying in support of Operation Enduring Freedom and Operation Iraqi Freedom

This special issue of Journal of Poetry Therapy focuses on the use of poetry and other forms of expressive writing to explore the transformative experiences of military veterans, and so in this article I discuss how the use of poetry, hip-hop, and philosophy positively influenced my life while I was serving in the United States Air Force (USAF) from 2000 through 2004. This article briefly reviews my reasons for enlisting and discusses the importance that poetry, hip-hop, and philosophy had for me during four different phases of my military history: (i) Basic Military Training, (ii) Aircraft Qualification, Combat Survival, and Water Survival Training, (iii) serving in the post 9/11 operations Operation Enduring Freedom and Operation Iraqi Freedom, and (iv) the period after fulfilling my time of service for the USAF. In discussing each phase, I explain the unique challenges that I encountered, how I used poetry, hip-hop, and philosophy to successfully overcome these challenges, point out relevant examples of poetry, hip-hop, and philosophy that were particularly influential, and include pictures of my experiences throughout

The Physiological and Morphological Benefits of Shadowboxing

Is shadowboxing an effective form of functional exercise? What physiological and morphological changes result from an exercise program based exclusively on shadowboxing for 3 weeks? To date, no empirical research has focused specifically on addressing these questions. Since mixed martial arts (MMA) is the fastest growing sport in the world, and since boxing and kickboxing fitness classes are among the most popular in gyms and fitness clubs worldwide, the lack of research on shadowboxing and martial arts-based fitness programs in the extant literature is a shortcoming that the present article aims to address. This case study involved a previously sedentary individual engaging in an exercise program based exclusively on shadowboxing for 3 weeks. Body composition and heart rate data were collected before, throughout, and upon completion of the 3-week exercise program to determine the effectiveness of shadowboxing for functional fitness purposes. An original shadowboxing program prepared by an Everlast Master Instructor and NASM Certified Personal Trainer (NASM-CPT) and Performance Enhancement Specialist (NASM-PES) was used for this 3-week period. The original shadowboxing program with goals, techniques, and combinations to work on throughout the 3-week program is included in this article. This case study demonstrates that a 3-week exercise program based exclusively on shadowboxing can increase aerobic capacity, muscle mass, bone mass, basal metabolic rate, and daily calorie intake, and decrease resting heart rate, fat mass, body fat percentage, and visceral fat rating in a previously sedentary individual. The results of this research demonstrate that shadowboxing can be a safe and effective form of exercise leading to morphological and physiological improvements including fat loss and increased aerobic capacity. The results of this research also demonstrate that the Tanita BC-1500 is a reliable tool for individuals to evaluate their own fitness progress over time

The semantics of slurs: A refutation of coreferentialism

Coreferentialism refers to the common assumption in the literature that slurs and descriptors are coreferential expressions with precisely the same extension. For instance, Vallee recently writes that “If S is an ethnic slur in language L, then there is a non-derogatory expression G in L such that G and S have the same extension”. The non-derogatory expression G is commonly considered the nonpejorative correlate of the slur expression S and it is widely thought that every S has a coreferring G that possesses precisely the same extension. Yet here I argue against this widespread assumption by first briefly introducing what slurs are and then considering four sources of supporting evidence showing that slurs and descriptors are in fact not coreferential expressions with precisely the same extension. I argue that since slurs and descriptors differ in their extension they thereby differ in their meaning or content also. This article additionally introduces the notion of a conceptual anchor in order to adequately account for the relationship between slurs and descriptors actually evidenced in the empirical data, and further considers the inadequacy of common dictionary definitions of slurs. This article therefore contributes to the literature on slurs by demonstrating that previous accounts operating on the assumption that slurs and descriptors are coreferential expressions with the same extension, and that they thereby have the same meaning or content, are inconsistent with empirical data and that an alternative account in accord with Croom better fits the facts concerning their actual meaning and us

Music, Neuroscience, and the Psychology of Well-Being: A Précis

In Flourish, the positive psychologist Seligman (2011) identifies five commonly recognized factors that are characteristic of human flourishing or well-being: (1) “positive emotion,” (2) “relationships,” (3) “engagement,” (4) “achievement,” and (5) “meaning” (p. 24). Although there is no settled set of necessary and sufficient conditions neatly circumscribing the bounds of human flourishing (Seligman, 2011), we would mostly likely consider a person that possessed high levels of these five factors as paradigmatic or prototypical of human flourishing. Accordingly, if we wanted to go about the practical task of actually increasing our level of well-being, we ought to do so by focusing on practically increasing the levels of the five factors that are characteristic of well-being. If, for instance, an activity such as musical engagement can be shown to positively influence each or all of these five factors, this would be compelling evidence that an activity such as musical engagement can positively contribute to one’s living a flourishing life. I am of the belief that psychological research can and should be used, not only to identify and diagnose maladaptive psychological states, but identify and promote adaptive psychological states as well. In this article I advance the hypothesis and provide supporting evidence for the claim that musical engagement can positively contribute to one’s living a flourishing life. Since there has not yet been a substantive and up-to-date investigation of the possible role of music in contributing to one’s living a flourishing life, the purpose of this article is to conduct this investigation, thereby bridging the gap and stimulating discussion between the psychology of music and the psychology of well-being

Music practice and participation for psychological well-being: A review of how music influences positive emotion, engagement, relationships, meaning, and accomplishment

In “Flourish,” Martin Seligman maintained that the elements of well-being consist of “PERMA: positive emotion, engagement, relationships, meaning, and accomplishment.” Although the question of what constitutes human flourishing or psychological well-being has remained a topic of continued debate among scholars, it has recently been argued in the literature that a paradigmatic or prototypical case of human psychological well-being would largely manifest most or all of the aforementioned PERMA factors. Further, in “A Neuroscientific Perspective on Music Therapy,” Stefan Koelsch also suggested that “Music therapy can have effects that improve the psychological and physiological health of individuals,” so it seems plausible that engaging in practices of music can positively contribute to one living a more optimally flourishing life with greater psychological well-being. However, recent studies on music practice and participation have not yet been reviewed and integrated under the PERMA framework from positive psychology to further explore and explicate this possibility. This article therefore contributes to extant work by reviewing recent research on psychological well-being and music to offer support for the claim that music practice and participation can positively contribute to one living a flourishing life by positively influencing their emotions, engagement, relationships, meaning, and accomplishment

Embodying martial arts for mental health: Cultivating psychological wellbeing with martial arts practice

The question of what constitutes and facilitates mental health or psychological well-being has remained of great interest to martial artists and philosophers alike, and still endures to this day. Although important questions about well-being remain, it has recently been argued in the literature that a paradigmatic or prototypical case of human psychological well-being would characteristically consist of positive emotion, engagement, relationships, meaning, and accomplishment. Other scholarship has also recently suggested that martial arts practice may positively promote psychological well-being, although recent studies on martial arts have not yet been reviewed and integrated under the PERMA framework from positive psychology to further explore and explicate this possibility. This article therefore contributes to the literature by reviewing recent work on psychological well-being and martial arts to determine whether there is substantive support for the claim that practicing martial arts can positively contribute to one flourishing with greater psychological well-being

The practice of poetry and the psychology of well-being

In “Flourish,” the psychologist Martin Seligman proposed that psychological well-being consists of “PERMA: positive emotion, engagement, relationships, meaning, and accomplishment.” Although the question of what constitutes flourishing or psychological well-being has been long debated among scholars, the recent literature has suggested that a paradigmatic or prototypical case of psychological well-being would manifest most or all of the aforementioned PERMA factors. The recent literature on poetry therapy has also suggested that poetry practice may be utilized as “an effective therapeutic tool” for patients suffering from a variety of ailments so it seems plausible that practicing poetry can positively contribute to one flourishing with greater psychological well-being. However, recent studies on poetry therapy have not yet been reviewed and integrated under the PERMA framework from positive psychology to further explore and explicate this possibility. This article therefore contributes to extant work by reviewing recent research on poetry therapy and psychological well-being and offering support for the claim that practicing poetry can positively contribute to one flourishing with greater psychological well-being by positively influencing their emotions, engagement or “flow” experiences, social relationships, sense of meaning or purpose in life, and personal accomplishments

Low-speed wind-tunnel investigation of flight spoilers as trailing-vortex-alleviation devices on a medium range wide-body tri-jet airplane model

An investigation was made in the V/STOL tunnel to determine, by the trailing wing sensor technique, the effectiveness of various segments of the existing flight spoilers on a medium range wide body tri-jet transport airplane model when they were deflected as trailing vortex alleviation devices. The four combinations of flight spoiler segments investigated were effective in reducing the induced rolling moment on the trailing wing model by as much as 15 to 60 percent at distances behind the transport model of from 3.9 to 19.6 transport wing spans, 19.6 spans being the downstream limit of distances used. Essentially all of the reduction in induced rolling moment on the trailing wing model was realized at a spoiler deflection of about 45 deg