Correspondence between environmental gradients and summer littoral fish assemblages in low salinity reaches of the Chesapeake Bay, USA

Patterns in the assemblage structure of littoral fishes occupying the gradient between riverine and estuarine ecosystems were revealed through multivariate analysis of 5 annual summer seine surveys in 4 tributary systems of the lower Chesapeake Bay. Catch per unit effort of fishes was quantified and environmental variables measured to characterize assemblage structure and population responses along large-scale (km) environmental gradients. Results of two-way indicator species analysis (TWINSPAN), detrended correspondence analysis (DCA) and detrended canonical correspondence analysis (DCCA) suggested the presence of 4 intergrading assemblages of littoral beach fishes: permanent tidal freshwater, lower tidal freshwater, oligohaline estuary and mesohaline estuary. Littoral fish assemblages were ordered along a large-scale spatial gradient between tidal freshwater and mesohaline river reaches during summer, when relatively stable hydrological conditions create a well-defined salinity gradient. Large-scale distribution of these fishes along the liver axis corresponded with salinity (and its correlates) up to the interface, and with structural attributes of the habitat (nearshore sediment grain size, presence of submerged aquatic vegetation, woody debris) in the permanent tidal freshwater river reaches. The permanent tidal freshwater reaches were more riverine in character, and were typified by speciose and relatively stable assemblages dominated by resident secondary division freshwater fishes and the juveniles of several diadromous species. Although the resident fauna is certainly derivative of more upland, non-tidal streams. patterns of association suggest distinct ecological relationships may exist for species co-occurring in tidal freshwater habitats

B2B E-Marketplace in the Procurement Supply Chain of Airlines: a Strategic Direction for the Future?

With the airline industry experiencing a global economic downturn, B2B e-Business isbecoming more and more the focus of airlines’ strategies. More recently, airlines have studiedintensively the potential of joint-procurement possibilities and have taken measures in creatingconsortia-led B2B e-Marketplaces as mediators for aggregating demand and to facilitate transactions.In academic literature, limited academic research has been undertaken in exploring the value creation of B2B e-Marketplace models in the aviation industry. The aim is to conduct a theoretical analysis to explore whether or not e-Marketplaces have the potential to add value to procurement in the aviation industry. The research focuses on the potential of B2B e-Marketplaces in terms of improving an airline’s competitiveness in its procurement value chain. The theoretical framework adopted supports the identification of barriers to success and critical success factors

A New Hub in the Aviation Industry: towards an Integration of B2B e-marketplaces in the Airline Industry

In academic literature, limited academic research has been undertaken in exploring the value creation of B2B e-Marketplace models in the aviation industry. The aim is to conduct a theoretical analysis to explore whether or not e-Marketplaces have the potential to add value to procurement in the aviation industry. The research focuses on the potential of B2B e-Marketplaces in terms of improving an airline’s competitiveness in its procurement value chain. The theoretical framework adopted supports the identification of barriers to success and critical success factors

Evidence On The Chronic Care Model In The New Millennium

Developed more than a decade ago, the Chronic Care Model (CCM) is a widely adopted approach to improving ambulatory care that has guided clinical quality initiatives in the United States and around the world. We examine the evidence of the CCM’s effectiveness by reviewing articles published since 2000 that used one of five key CCM papers as a reference. Accumulated evidence appears to support the CCM as an integrated framework to guide practice redesign. Although work remains to be done in areas such as cost-effectiveness, these studies suggest that redesigning care using the CCM leads to improved patient care and better health outcomes

Nova Sagittarii 1994 #1 (V4332 Sagittarii): The Discovery and Evolution of an Unusual Luminous Red Variable Star

We report photometry and spectroscopy of the evolution of Nova Sagittarii 1994 #1 (V4332 Sagittarii) during outburst. We compare the photometric and spectral evolution of this outburst to known classes of outbursts -- including classical novae and outbursts occurring on symbiotic stars -- and find this object does NOT conform to any known class of outburst. The closest match to the behavior of this unusual object is M31 RV, an extremely luminous and red variable object discovered in the bulge of M31 in 1988. However, the temporal behavior and maximum luminosity of the two events differ by several orders of magnitude, requiring substantial intrinsic variation if these two events are members the same type of outburst. Our model of the spectroscopic evolution of this outburst shows that the effective temperature cooled from 4400 K to 2300 K over the three month span of our observations. In combination with line diagnostics in our later spectra, including [OI] lambda 5577 and the dramatic increase in the Halpha to Hbeta ratio, we infer the existence of a cool, dense (N_e ~ 10^{8-9} cm^{-3}) envelope that is optically thick in the Hydrogen Balmer recombination lines (case C). We suggest that a nuclear event in a single star, in which a slow shock drove the photosphere outwards, can power the observed luminosity evolution and the emission spectrum.Comment: Accepted for publication in AJ. 24 pages including 8 embedded postscript figures. Also available at http://www.astronomy.ohio-state.edu/~martini/pub

Cut It Out: Conversations with Professional Editors

We know what writers do, but what do professional editors do? Come to this session and learn how editors give shape and clarity to writing, and how they navigate the egos of their clients. The students in this session performed informational interviews with different types of editors, including people whose job is to review manuscripts and people whose job is not to review creative writing but to review important documents that will result in people dying or getting fired if they go wrong. Come to this session and learn about the power of words

The Effect of High-Impact Exercise on Stress Urinary Incontinence in Physically Active Women

Stress urinary incontinence (SUI) is a condition in which increased abdominal pressure with coughing, laughing, sneezing, or exercise can cause unintentional leakage of urine in the female population. CrossFit and other high impact aerobic exercises, are popular forms of exercise amongst women all age groups. The purpose of this study was to examine specific high impact exercises that can affect SUI in women

Effectiveness of a Faculty Development Program in Fostering Interprofessional Education Competencies

AbstractBackground: To determine the effectiveness of a faculty development program offered to clinical faculty in fostering interprofessional education competencies.Methods and Findings: A pre-post randomized control group design was used in which only one of two cohorts of clinical faculty received an interprofessional educational intervention. Both cohorts then facilitated case-based interprofessional education sessions for student learners. A variety of outcome measures were used to assess differences between groups in terms of knowledge, skills, and attitudes related to interprofessional education and practice. No significant differences were noted between the control and intervention groups.Conclusions: The use of a pre-post randomized control group design to measure effectiveness of an educational intervention should be considered to demonstrate the impact of educational interventions