490 research outputs found
Hadron Mass Effects in Power Corrections to Event Shapes
We study the effect of hadron masses on the leading power correction of dijet
event-shape distributions. We define the transverse velocity operator, that
describes the effects of hadron masses. It depends on the "transverse velocity"
r, which is different from one only for non-vanishing hadron masses. We find
that hadron-mass effects in general break universality. However we provide a
simple method to identify universality classes of event shapes with a common
power correction. We also compute the anomalous dimension of the power
correction and the structure of the corresponding Wilson coefficient, finding a
nontrivial result.Comment: 8 pages, 3 figures, 2 tables, to appear in the proceedings of Xth
Quark Confinement and the Hadron Spectru
Water Quality Assessment for San Luis Obispo Creek and Stenner Creek
Water quality was assessed in five stream segments in San Luis Obispo Creek and its tributary Stenner Creek in spring 2022. Two sites were selected along the San Luis Obispo Creek, and three sites along Stenner Creek. The stream segments were evaluated using the Surface Water Ambient Monitoring Programâs procedures for bioassessment of California streams. This procedure describes the collection of physical, chemical, and biological parameters including streamflow, substrate, flow habitat, and benthic macroinvertebrates toward a quantification of a California Stream Condition Index (CSCI). The California Polytechnic State University: San Luis Obispo, Stream Measurements and Water Quality course provided student labor for collecting and organizing data. The water quality of five stream segments within the San Luis Obispo Creek watershed were found to be acceptable to good quality based on the resulting CSCI scores
Music and Memory in Keepintime
In this essay, the author examines Keepintime: Talking Drums and Whispering Vinyl, a thirteen-minute award-winning film that documents a musical encounter between three hip hop turntablists and three session drummers that took place in Los Angeles in the year 2000. Through a close reading and analysis of the film, the essay explores the musical, cultural, and discursive terrain that connects the musical traditions represented therein, critically examining issues surrounding the African diaspora, identity formation, cultural memory, as well as trans- and inter-cultural exchange
Production and perception of stop consonants in Spanish, Quichua, and Media Lengua
This dissertation explores the phonetics and phonology of language contact, specifically pertaining to the integration of Spanish voiced stops /b/, /d/, and /g/ into Quichua, a language with non-contrastive stop voicing. Conflicting areas of convergence of this type appear when two or more phonological systems interact and phonemes from the target language are unknown natively to speakers of the source language.
Media Lengua is a mixed language with an agglutinating Quichua morphology, and Quichua syntactic and phonological systems where nearly all the native Quichua vocabulary has been replaced by Spanish. This extreme contact scenario has integrated the voiced stop series into Media Lengua and abundant minimal pairs are present. If the phonological system of Media Lengua is indeed of Quichua origin however, how have speakers integrated the voiced stop series productively and perceptually? Have they adopted different strategies from Quichua speakers? If so, how do they differ?
Chapter 1 sets the scene with an in-depth description of how contact between Spanish and Quichua has mutually influenced each language at the morphosyntactic level. Chapter 2 explores voice onset time (VOT) production in all five language varieties. Statistical modeling is used to search for differences in duration while taking into account a number of linguistic and demographic factors. Chapter 3 investigates stop perception in Media Lengua and Quichua, and uses Urban Spanish as a point of comparison. Chapter 4 looks at phonetic pre-nasalization in voiced stops across Media Lengua, Quichua, and Urban Spanish. Chapter 5 describes allophonic variations in stop production. The final chapter speculates on the nature of sound change at the phonetic level and explores possible origins of Media Lengua.
Production results show that Media Lengua VOT duration values have shifted away from Quichua towards Rural Spanish. The perceptual results show an age-based effect with older Quichua speakers, which shows more random responses to the stimuli than younger speakers. This effect was not found in Media Lengua or Urban Spanish speakers. Similar age-based results were also found for stop weakening tendencies in Quichua and L2 Spanish speakers, while Media Lengua, Rural, and Urban Spanish speakers were not significantly affected by age
Reducing and removing barriers to spatial audio : applications of capital as a critical framework to promote inclusion in spatial audio : a thesis submitted to Massey University in partial fulfilment of the requirements for the degree of Doctorate of Philosophy in Music at Massey University, Wellington, New Zealand
The research within this thesis aims to address the question of whether barriers of capital to the field of spatial audio can be reduced or removed.
Spatial audio is the musical utilization of space, where spatialization is the salient feature of the musical work. As a field, it primarily exists within academic and art institutions. Because of this, there are numerous barriers that prohibit people from engaging with the field. These barriers include significant technical requirements, the need for education, the expense of large spatial audio systems, amongst others. These barriers mean that those who are excluded have little to no pathway to engage with the field.
This thesis explores the barriers in spatial audio through the lens of capital. Viewed as oneâs level of resource, a lack of economic, social, symbolic, cultural, and physical capital can exclude many from engaging with spatial audio. The research within this thesis identifies barriers of capital that exist within the field through qualitative and quantitative survey analysis as well as literature review. The identified barriers are then addressed through practice-led and practice-based research with the creation of new spatial audio works and compositional strategies, alongside user surveys to ascertain the efficacy of the research
Earbuds: A Method for Analyzing Nasality in the Field
Existing methods for collecting and analyzing nasality data are problematic for linguistic fieldworkers: aerodynamic equipment can be expensive and difficult to transport, and acoustic analyses require large amounts of optimally-recorded data. In this paper, a highly mobile and low-cost method is proposed. By connecting low impedance earbuds into a microphone jack of a recording device and placing one earbud immediately below one nostril while keeping the other earbud by the mouth, it is possible to capture the relative intensity of sound exiting the nasal and oral cavities. The two channels can then be normalized to assess the relative prominence of nasality and orality in a given speech sound. This method can not only be used to establish whether nasality is present in a speech signal, but it can also provide information about the timing and duration of nasal gestures. As such, it is an ideal tool for collecting high-quality nasality data in the field.National Foreign Language Resource Cente
Optimizing approaches to addressing depression in cardiac patients: a comment on O'Neil et al
Comment on: Efficacy and feasibility of a tele-health intervention for acute coronary syndrome patients with depression: results of the "MoodCare" randomized controlled trial
Boosted objects and jet substructure at the LHC. Report of BOOST2012, held at IFIC Valencia, 23rdâ27th of July 2012
This report of the BOOST2012 workshop presents the results of four working groups that studied key aspects of jet substructure. We discuss the potential of first-principle QCD calculations to yield a precise description of the substructure of jets and study the accuracy of state-of-the-art Monte Carlo tools. Limitations of the experimentsâ ability to resolve substructure are evaluated, with a focus on the impact of additional (pile-up) proton proton collisions on jet substructure performance in future LHC operating scenarios. A final section summarizes the lessons learnt from jet substructure analyses in searches for new physics in the production of boosted top quarks
Depressive Symptoms are Associated with Poor Adherence to Some Lifestyle but not Medication Recommendations to Prevent Cardiovascular Disease: National Health and Nutrition Examination Survey (NHANES) 2005-2010
poster abstractDepression has been linked to poor medical adherence; however, most studies have involved persons with preexisting conditions, such as cardiovascular disease (CVD). Our aim was to examine relationships between depressive symptoms and adherence to medication and lifestyle recommendations intended to prevent CVD in a community sample. We selected adults â„18 years (53%-56% female, 47%-52% non-white) with a history of hypertension and/or hypercholesterolemia, but free of CVD, who participated in 2005-2010 waves of NHANES â a survey of a large probability sample representative of the U.S. population. The Patient Health Questionnaire-9 (PHQ-9) was used to assess depressive symptoms (converted to z-scores). The NHANES Blood Pressure and Cholesterol questionnaire was used to assess self-reported adherence to five medication and lifestyle recommendations: take antihypertensive medication (N=3313), take lipid-lowering medication (N=2266), control/lose weight (N=2177), eat fewer high fat/cholesterol foods (N=2924), and increase physical activity (N=2540). Logistic regression models (adjusting for age, sex, race-ethnicity, education, body mass, diabetes, smoking status, daily alcohol intake and NHANES sample design) revealed that a 1-SD increase in PHQ-9 total score was associated with a 14% lower likelihood of adherence to the control/lose weight recommendation (OR=0.86, 95% CI: 0.75-0.98, p=.02) and a 25% lower likelihood of adherence to the increase physical activity recommendation (OR=0.75, 95% CI: 0.65-0.86, p<.001). PHQ-9 total score was not associated with the likelihood of adherence to antihypertensive medication (OR, 0.93, 95% CI: 0.82-1.05, p=0.21), lipid-lowering medication (OR=0.99, 95% CI: 0.86-1.14, p=0.90), or eat fewer high fat/cholesterol foods recommendations (OR=0.94, 95% CI: 0.82-1.08, p=0.40). Adherence rates for depressed verses nondepressed adults to the control/lose weight recommendation were 75% and 85% and the increase physical activity recommendation were 63% and 79%, respectively. Our findings suggest that poor adherence to weight and activity recommendations, but not medication and diet recommendations, may partially explain the excess CVD risk of depressed persons
Atypical depression and double depression predict new-onset cardiovascular disease in U.S. adults
BACKGROUND:
Although depression is a risk factor for cardiovascular disease (CVD), it is unknown whether this risk varies across depressive disorder subtypes. Thus, we investigated atypical major depressive disorder (MDD) and double depression as predictors of new-onset CVD in a nationally representative sample of U.S. adults.
METHODS:
Prospective data from 28,726 adults initially free of CVD who participated in Wave 1 (2001-2002) and Wave 2 (2004-2005) of the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC) were examined. Lifetime depressive disorder subtypes (Wave 1) and incident CVD (Wave 2) were determined by structured interviews.
RESULTS:
We identified 1,116 incident CVD cases. In demographics adjusted models, the atypical MDD group had a higher odds of incident CVD than the no depression history (OR = 2.19, 95% CI: 1.71-2.81, P < .001), dysthymic disorder only (OR = 1.61, 95% CI: 1.08-2.39, P = .019), and nonatypical MDD (OR = 1.46, 95% CI: 1.11-1.91, P = .006) groups. Likewise, the double depression group had a higher odds of incident CVD than the no depression history (OR = 2.17, 95% CI: 1.92-2.45, P < .001), dysthymic disorder only (OR = 1.59, 95% CI: 1.16-2.19, P = .004), and MDD only (OR = 1.46, 95% CI: 1.20-1.77, P < .001) groups. Relationships were similar but attenuated after adjustment for CVD risk factors and anxiety disorders.
CONCLUSIONS:
Adults with atypical MDD or double depression may be subgroups of the depressed population at particularly high risk of new-onset CVD. Thus, these subgroups may (a) be driving the overall depression-CVD relationship and (b) be in need of earlier and/or more intense CVD primary prevention efforts to reduce their excess CVD burden
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