4,797 research outputs found
Flows of constant mean curvature tori in the 3-sphere: The equivariant case
We present a deformation for constant mean curvature tori in the 3-sphere. We
show that the moduli space of equivariant constant mean curvature tori in the
3-sphere is connected, and we classify the minimal, the embedded, and the
Alexandrov embedded tori therein. We conclude with an instability result.Comment: v2: 33 pages, 9 figures. Instability result adde
The Determinants of Firm Profitability: The Effect of Social Media
This study seeks to explore whether social media plays an important role in determining a firm’s profits. Using data from 392 Large American firms from the period 2005-2013, obtained primarily from the database, COMPUSTAT, I find that a firm’s adoption of Social Media plays a minor role in determining profits, while higher Lagged Profits, Lagged Productivity, Firm Sizes, and Advertising Expenses lead to higher profits
Impact of Aging Information on the Continuing Education Preferences of Behavioral Health Clinicians
The United States population is aging rapidly and the behavioral health workforce is ill-prepared to meet the concurrent rise in demand for services for older adults. Clinicians specializing in working with older adults make up a very small portion of providers and the majority of service provision falls on general practitioners. The discipline of counseling has emphasized multicultural competencies in training and practice but has not specified standards of competence for work with older adults; little is known about the interests and training preferences of Licensed Professional Counselors (LPCs). This study examined the impact of receiving foundational information about aging on continuing education (CE) preferences of LPCs in Missouri. Participants were practicing LPCs in Missouri (N = 120) recruited from a random sampling of the state registry. Inclusion criteria were being currently licensed and involved in provision of direct service. The study employed a three-group randomized controlled design with participants assigned to one of three conditions: an aging-specific reading, an Opioid Use Disorder-specific reading, and a CE requirement-specific reading. As an outcome, participants selected between an aging-specific CE or Motivational Interviewing-specific CE. Results showed that aging knowledge, ageism, and perceived competence did predict CE choice, F(3,108) = 5.68, p \u3c .001, R2 = .14. The inclusion of group classification into the model resulted in marginally significant improvement, F(4, 107) = 5.35, p \u3c .001; R2D = .03, p = .05, such that those in the Aging-Reading condition were marginally more likely to select the aging-specific CE option than those in the other two conditions. Scores on the ageism measure were not statistically different between participants choosing either CE option, F(1, 116) = 1.73, p = .19. Higher aging knowledge was associated with greater perceived competence for working with older adults, r =.24, p = .01, but aging knowledge was not significantly associated with ageism, r = -.07, p = .44. Overall, the provision of educational reading on aging did raise interest in and choice of the aging-specific CE option. This result suggests that foundational knowledge on aging may increase practitioner’s interest in gaining competency for working with older adults
Local and regional approaches to studying the phenology and biological control of the soybean aphid
Soybean aphids Aphis glycines Matsumura (Hemiptera: Aphididae) are an economic pest of soybean Glycine max (L.) Merr. in much of the United States and parts of Canada. Some crucial phenological information of A. glycines is unknown, specifically source-sink dynamics between and within host plants and factors guiding aphid migrations. In addition, there are discrepancies in the literature on the importance of food webs and how local landscape effects can alter A. glycines populations. Increasing our understanding of A. glycines population dynamics may improve predictions of aphid outbreaks and integrated pest management efforts. The first objective was to determine how landscape composition and heterogeneity impact A. glycines and their natural predator community. This study was centered in and around the Neal Smith National Wildlife Refuge located in Jasper County, Iowa. A second objective was to determine how prairie plantings adjacent to soybean impact A. glycines and natural enemy populations. To accomplish this, four study sites in central Iowa, transects were established up to 200 m in both soybean and prairie. A third objective was to describe A. glycines movement patterns on a regional scale. We monitored winged aphids (alates) using a suction trap network established at 42 locations over 10 states. Alates where correlated with northern latitudes which led to the last objective which was to predict A. glycines using low temperature data from the Midwest US and determine whether temperatures have reached A. glycines supercooling point (-34oC)
Mindfulness, Facets of Big Five Personalities, and Psychological Health
The concept of mindfulness, nonjudgmentally being aware of one’s environment, whether internal or external, has long been a core component of eastern religions, such as Buddhism, for over 2,000 years. Not until relatively recently, however, has the concept of mindfulness gained attention in Western psychology. As mindfulness has come to be associated with both psychological health and the absence of psychological distress, its practice has begun to be implemented in a number of cognitive behavioral therapies for a wide range of mental disorders.
The purpose of the present study was to examine the possible relationships between facets of measures used to quantify mindfulness and five factor personality, with special emphasis placed on the possibility of mindfulness mediating between Openness and psychological flourishing as well as Neuroticism and psychological distress. Results using a structural equation model failed to support the role of mindfulness as a mediator of the relationships between Openness and flourishing or Neuroticism and distress, but did shed light on numerous other relationships between facets of mindfulness and components of five-factor personality
Sampling and management of aphidophagous natural enemies in Iowa soybean
In Iowa, surveys of natural enemies in soybean [Glycine max (L.) Merr.] conducted before the arrival of Aphis glycines Matsumara (Hemiptera: Aphididae) revealed several species that may contribute to the mortality of A. glycines. In 2004 and 2005, several sampling methods were investigated to determine if diversity of the natural enemy community in Iowa soybean has changed with the arrival of A. glycines. We hypothesized that the natural enemy community in soybean has changed with the introduction of A. glycines and that sampling methods would collect different species of natural enemies. Also, with the use of an alfalfa living mulch, we investigated the impact of natural enemies on A. glycines. We hypothesized that a living mulch would increase the abundance of the aphidophagous community in soybean and suppress A. glycines establishment and population growth
Evaluation of the Military Utility of Employing an Angle of Arrival Payload Hosted on a CubeSat as an Augmentation to Existing Geolocation Systems
This research models the performance of the proposed augmentation system as well as three and four-ball TDOA satellite systems and AOA and three-ball TDOA airborne systems individually, and performs geolocation estimate fusion via a variety of techniques to determine the increase in performance due to geolocation estimate fusion in operationally representative scenarios. It also introduces a high fidelity surface of the earth constraint based upon a digital elevation model across all geolocation algorithms. The results from this research show that the proposed augmentation system does have military utility when combined with other geolocation systems of similar or worse individual performance. Additionally, it demonstrates the performance improvement due to correct application of a surface of the earth constraint, and the most appropriate estimate fusion technique
Testable two-loop radiative neutrino mass model based on an effective operator
A new two-loop radiative Majorana neutrino mass model is constructed from the
gauge-invariant effective operator that violates lepton number conservation by two units. The
ultraviolet completion features two scalar leptoquark flavors and a color-octet
Majorana fermion. We show that there exists a region of parameter space where
the neutrino oscillation data can be fitted while simultaneously meeting
flavor-violation and collider bounds. The model is testable through lepton
flavor-violating processes such as , , and
conversion, as well as collider searches for the scalar
leptoquarks and color-octet fermion. We computed and compiled a list of
necessary Passarino-Veltman integrals up to boxes in the approximation of
vanishing external momenta and made them available as a Mathematica package,
denoted as ANT.Comment: 42 pages, 11 figures, typo in Eq. (4.9) as well as wrong chirality
structures in Secs. 4.5 and 5.2 corrected, final results unchange
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