Relationship among school counselors\u27 perceptions of poverty, color-blind racial attitudes, and multicultural counseling competencies : a formula for change makers.

The relationship among school counselors’ attribution of poverty, color-blind racial attitudes, and self-perceived multicultural competence (knowledge and awareness) were examined in this dissertation. Additionally, the researcher reviewed the impact of having lived in low-income environments had on school counselors’ beliefs of poverty attribution. Lastly, the impact graduating from a CACREP accredited program had on poverty attribution was explored. Results, implications, and limitations are addressed

Orbital Solutions and Absolute Elements of the Eclipsing Binary MY Cygni

Differential UBV photoelectric photometry for the eclipsing binary MY Cyg is presented. The Wilson-Devinney program is used to simultaneously solve the three light curves together with previously published radial velocities. A comparison is made with the previous solution found with the Russell-Merrill method. We examine the long-term apsidal motion of this well-detached, slightly eccentric system. We determine absolute dimensions, discuss metallicity/Am-star issues, and estimate the evolutionary status of the stars

Physiological and psychological correlates of fatigue in HIV/AIDS

Fatigue is a frequent symptom reported by persons living with HIV disease and one that affects all aspects of quality of life. To improve quality of care of persons with HIV disease, it is important to address all factors that contribute to fatigue. The purpose of this study was to determine the associations of physiological, psychological, and sociological factors with fatigue in an HIV-infected population. With Piper’s integrated fatigue model guiding selection, factors examined in this study were hemoglobin, hematocrit, CD4+ cell count, HIV-RNA viral load, total sleep time, sleep quality, daytime sleepiness, HIV-related symptoms, anxiety, depression, and perceived stress. The sample (N = 79) for this descriptive correlational study was recruited from a primary health care association in South Carolina and consisted of 42 (53.2%) HIV-infected women and 37 (46.8%) HIV-infected men between the ages of 24 and 63 years (x = 39.9, s = 7.9). Of the participants, 70 (90%) were African American, 5 (6%) were Caucasian, and 3 (4%) were Hispanic. Using Pearson’s r, significant relationships were observed between fatigue and sleep quality, daytime sleepiness, HIV-related symptoms, state anxiety, trait anxiety, depression, and perceived stress. Sleep quality (F5,65 = 12.02, P = 0.0009), state anxiety (F5,65 = 8.28, P = 0.0054), HIV-related symptoms (F5,65 = 4.87, P = 0.0308), and depression (F5,65 = 7.31, P = 0.0087) retained significance in a 3-step, backward stepwise elimination model and accounted for 67% of the variance in fatigue. These findings underscore the need for addressing psychosocial stressors and sleep quality in developing effective care for HIV-infected individuals who experience fatigue

Diagnosis and Assessment of Adult Attention Deficit Hyperactivity Disorder: Symptom Severity and Performance on Cognitive and Achievement Testing

Attention Deficit Hyperactivity Disorder (ADHD) is typically diagnosed in childhood with the individual continuing to exhibit behavioral patterns associated with ADHD throughout their lifespan. Deficits in the ability to inhibit impulse control are a hallmark of ADHD in children and adults. This research study looks at the relationship of a common inhibitory control measure Conners' Continuous Performance Test - II (CCPT-II) and its relationship to self and observer reports of ADHD symptoms, cognitive ability, and achievement scores. This study included 103 adult male and female individuals who were found to meet DSM-IV-TR criteria for ADHD through full individual assessments conducted at a doctoral training clinic located at a major university. Results of this study do not indicate a strong relationship between the CCPT-II and behavior rating scales, cognitive ability, and achievement. This study did find that self-report of ADHD behaviors related to inattention, memory, and self-concept were associated with achievement scores. It was also found that self and observer reports of ADHD behaviors were highly correlated. Within one area related to impulsivity and emotional regulation, observers were more likely to rate the individual as more severe than the individual rated themselves

Proteomic analyses of marine bacteria

Proteins are the metabolic machines of the cell and as such, the study of proteins could illuminate the dominant biological activities that are occurring within cells and reveal how an organism interacts with its environment. Here, we used proteomic techniques to study the abundant marine bacterium SAR11 both as an isolate and in the context of microbial communities. An accurate mass and time tag library was built to allow quantitative comparison of exponentially growing and stationary phase proteomes of the cultured SAR11 strain Candidatus Pelagibacter ubique HTCC1062. Significant increases in stationary-phase proteins that mitigate oxidative damage; OsmC and thioredoxin reductase were detected. In addition, molecular chaperones, enzymes involved in methionine and cysteine biosynthesis, and regulatory proteins were also up-regulated in stationary phase. The up-regulation of this suite of proteins suggests a system by which Cand. P. ubique cells protect themselves against external stressors when nutrients are scarce without devoting significant resources to proteome remodeling. A mechanism for a global stationary-phase response was not identified. Metaproteomics is the study of all of the proteins expressed by a microbial community at a given point in time. Metaproteomic analyses were applied to mixed marine microbial communities collected from both oligotrophic and nutrient replete environments. Abundant proteins from SAR11, Prochlorococcus, and Synechococcus cells from the microbial community in the oligotrophic Sargasso Sea were identified using a novel technique for binning organism-specific metagenomic sequences. The SAR11 metaproteome was dominated by periplasmic substrate-binding proteins, specifically for phosphate, amino acids, phosphonate, and polyamines. A large-scale search on an unfiltered database with post-search BLAST annotations allowed for identification of proteins from SAR11 and other dominant bacterioplankton within the microbial community from the nutrient-replete Oregon coast. Here, the SAR11 metaproteome was also dominated by periplasmic substrate-binding proteins, but key substrates were amino acids, taurine, mannitol, and polyamines, suggesting that these substrates may become limiting before phosphorus when nutrients are freely available. The abundance of transport proteins suggests a means by which these cells remain competitive in the microbial community and play a key role in global nutrient cycling

Multiwavelength optical observations of chromospherically active binary systems V. FF UMa (2RE J0933+624): a system with orbital period variation

This is the fifth paper in a series aimed at studying the chromospheres of active binary systems using several optical spectroscopic indicators to obtain or improve orbital solution and fundamental stellar parameters. We present here the study of FF UMa (2RE J0933+624), a recently discovered, X-ray/EUV selected, active binary with strong H_alpha emission. The objectives of this work are, to find orbital solutions and define stellar parameters from precise radial velocities and carry out an extensive study of the optical indicators of chromospheric activity. We obtained high resolution echelle spectroscopic observations during five observing runs from 1998 to 2004. We found radial velocities by cross correlation with radial velocity standard stars to achieve the best orbital solution. We also measured rotational velocity by cross-correlation techniques and have studied the kinematic by galactic space- velocity components (U, V, W) and Eggen criteria. Finally, we have determined the chromospheric contribution in optical spectroscopic indicators, from Ca II H & K to Ca II IRT lines, using the spectral subtraction technique. We have found that this system presents an orbital period variation, higher than previously detected in other RS CVn systems. We determined an improved orbital solution, finding a circular orbit with a period of 3.274 days. We derived the stellar parameters, confirming the subgiant nature of the primary component and obtained rotational velocities (vsini), of 33.57 km/s and 32.38 km/s for the primary and secondary components respectively. From our kinematic study, we can deduce its membership to the Castor moving group. Finally, the activity study has given us a better understanding of the possible mechanisms that produce the orbital period variation.Comment: Latex file with 16 pages, 18 figures. Available at http://www.ucm.es/info/Astrof/invest/actividad/actividad_pub.html Accepted for publication in: Astronomy & Astrophysics (A&A

Hands-on Computer Use in Science Classrooms: The Skeptics Are Still Waiting

Frank Collea was a friend of Robert Fuller and David Brooks, and a mentor to Brooks. We miss him for his energy, his enthusiasm for teaching science, and his perception about how to improve science education. Frank Collea was not a big fan of using computers in instruction. Frank was neither an advocate of using computers to deliver instruction, nor an advocate of teaching their use as professional tools. Indeed, he thought that most of those of us who advocate computer use make assertions that are unwarranted. A decade ago, desktop computers were beginning to appear in colleges and universities in small numbers, and we began to explore their use (Sowell and Fuller, 1990). Since then, our thinking has changed substantially, moving away from having computers serve as patient teachers of the classical curriculum, and toward using them as professional tools—to extend, to magnify, to expand, and to enhance human reasoning. This article deals with the issues related to students learning to use computers as such professional tools. Two qualitative data sources inform this paper. The first is a recent doctoral dissertation consisting of a case study of a ‘mathematical methods in physics’ course that incorporated the use of Maple™* software (Runge, 1997). The other is an evaluation of a new undergraduate course, ‘multimedia physics,’ that sought to integrate mathematics and physics content, and involved the use of many media forms (Pytlik Z. and Spiegel, 1997)

The Role of Transnational Expert Associations in Governing the Cybersecurity Risks of the Internet of Things

The benefits and challenges of the Internet of Things (IoT) are increasingly capturing the attention of policy-makers, the media and the wider public. On the one hand, IoT has the potential to enable new models of organising social and economic activity, as evidenced in sectors such as transport (mobility as service) and manufacturing (industrial IoT). On the other hand, IoT is challenged by the increasing number of cyberattacks originating from unsecure connected devices and the challenges of monitoring and enforcing basic security policies on them. This paper analyses the unique cybersecurity risks emerging from the growth of IoT, focusing on the use of connected devices as vectors in distributed denial of service (DDoS) attacks. Through an analysis of the Mirai DDoS, the paper identifies three unique characteristics of IoT botnets: a) higher utilisation rate; b) more durable infections; c) greater contamination rate due to their increasingly connected ecosystem. The paper concludes that an adaptive governance structure is required to effectively respond to the dynamic cybersecurity risks associated with IoT and its potential to develop into a global infrastructure of vulnerabilities. This complex adaptive system cannot be based solely on traditional points of authority (e.g. regulation; formal standards) and relies on the information gathering and monitoring capabilities of transnational internet anti-abuse communities, such as M3AAWG and APWG, to provide a more modular response to the global proliferation of IoT products with low level of security