The spatial temporal regime of stream flow of the conterminous U.S. in connection with indices of global atmospheric circulation

Long-term stream flow records (1929-1988) from seventy one U.S. Geological Survey gauging stations with drainage area in range 1000-10000 sq mi were analyzed using multivariate statistics. Factor analysis of average annual flow revealed seven patterns of river runoff within seven distinct regions of the territory. This factor model reflected 69% variance of the initial matrix. The second set of stream flow records (1939-1972) from ninety-seven gauging stations was used as control. This set contains all seventy one from first one and additional stations with shorter observation period. Factor analysis of this expended set again yielded seven factors (69% variance of the initial matrix) with very similar spatial distribution of gauging stations.

Every group of watersheds obtained as a factor was presented by one gauging station with time series of annual discharges (1- 05474000, 2- 14321000, 3- 07019000, 4- 0815000, 5- 11186001, 6- 01666000, 7- 06800500) as the most typical for group. For the same time interval, streams represented by all patterns have increasing values (i. e. the positive difference between two time subintervals); but only the positive linear trend for patterns 1 and 7 are statistically significant. 

For the seven typical flow records, monthly average values were obtained from three to five seasons composed from different ensembles of months. 

For each annual time series of the typical seven stream flow patterns, regression equations were obtained from indices of global atmospheric circulation (AO, NAO, NPO and AAO). The equations contain from one to five variables (predictors) and have coefficients of correlation from 32% to 73%. 
&#xa

The design, implementation and assessment of a core student development model for Massachusetts Bay Community College.

The purpose of this study was to design, implement and assess a student orientation course as part of a Core Student Development Model for Massachusetts Bay Community College (MBCC). Functions were grouped into three categories: prevention, enrichment and development. A mandatory orientation course for all freshmen was designed, implemented and assessed. Thirty male and 30 female freshmen were chosen by a computerized, stratified random sampling. Half the subjects comprised the Experimental Group for participation in Orientation 101. The course consisted of 15 one-hour workshops conducted over a 15-week period. It covered four aspects of student development which were considered personal growth needs. Those four development aspects were: intellect, identity, values and interpersonal skills. A student survey developed by the Center for the Study of Community Colleges was used to assess performance. Responses were analyzed using the Statistical Package for Social Sciences (SPSS). Overall findings revealed significant differences between the experimental group and the control group on 18 of 60 survey items. Students were found to have adjusted their attitudes toward development of identity, intellect, values and interpersonal skills. Students responses indicated they felt too many requirements hampered their taking preferred courses and that MBCC should provide more cultural events on campus. Students also said the college should place greater emphasis on the education of adults with particular attention given to courses in liberal arts and the sciences. They participated in academic and career counseling, financial-aid workshops and college clubs and organizations. They felt that the college had given them confidence; increased their understanding of and respect for others; provided focus and direction; helped them develop employable skills and made them happier people. They said they could identify with some of the instructors, find a staff person interested in their activities and feel comfortable in their relationships with student services staff. Students also were willing to participate in self-help groups. The researcher concluded that personal growth needs were met through weekly positive reinforcement provided to students participating in Orientation 101

Femtosecond frequency comb measurement of absolute frequencies and hyperfine coupling constants in cesium vapor

We report measurements of absolute transition frequencies and hyperfine coupling constants for the 8S_{1/2}, 9S_{1/2}, 7D_{3/2}, and 7D_{5/2} states in ^{133}Cs vapor. The stepwise excitation through either the 6P_{1/2} or 6P_{3/2} intermediate state is performed directly with broadband laser light from a stabilized femtosecond laser optical-frequency comb. The laser beam is split, counter-propagated and focused into a room-temperature Cs vapor cell. The repetition rate of the frequency comb is scanned and we detect the fluorescence on the 7P_{1/2,3/2} -> 6S_{1/2} branches of the decay of the excited states. The excitations to the different states are isolated by the introduction of narrow-bandwidth interference filters in the laser beam paths. Using a nonlinear least-squares method we find measurements of transition frequencies and hyperfine coupling constants that are in agreement with other recent measurements for the 8S state and provide improvement by two orders of magnitude over previously published results for the 9S and 7D states.Comment: 14 pages, 14 figure

Care Experiences of Women Who Used Opioids and Experienced Fetal or Infant Loss

Objective To explore care experiences of women who used prescription or illicit opioids and experienced fetal or infant loss. Design A qualitative, descriptive design with secondary data analysis. Setting The Fetal and Infant Mortality Review program in an urban Midwestern county in the United States. Participants Eleven women with histories of prescription or illicit opioid use who experienced fetal or infant loss participated in the semistructured telephone or in-person interview portion of the mortality case review. Methods We used thematic analysis to analyze interview data. Results Five themes were identified related to the care experiences of participants throughout pregnancy and fetal/infant loss: Frustration and anger related to not being heard, feeling minimalized; Being overwhelmed with attempts to process and understand medical complications and outcomes; Profound sense of grief and coping with loss; Need to understand why and make difficult decisions; and Placing blame and guilt over death. Conclusion Our findings suggest that women who use opioids and experience fetal or infant loss have complex care, educational, and emotional needs. In the development of interventions for these women, it is important to address their unique and complex circumstances

The Effects of Shoe Design on Lower Limb Running Kinematics

The preference of running as a form of exercise exposes more recreational athletes to the risk of injury. Stress fractures occur for 0.7-20% of all running injuries (Wilder & Sethi, 2004) and 24-50% of stress fractures occur in the tibia (Aweid, Aweid, Talibi, & Porter, 2013). Stress fractures have been associated with high vertical impact peaks while running (Willy & Davis, 2013) so methods such as barefoot running and minimalist shoes aim to reduce these impact peaks by enforcing a more forefoot running pattern. Shoes with a lower drop height have been shown to induce a more forefoot running pattern without the discomfort of running barefoot or in non-cushioned minimalist shoes (Horvais & Samozino, 2012). The purpose of this study was to compare ankle joint kinematics, dorsiflexor muscle activity, and tibial axial acceleration while wearing low and high heel-drop shoes. Six female participants (19.8(1.0) years, 163.0(3.8) cm, and 60.4(5.5) kg) who ran a minimum of 10 miles per week provided informed consent prior to testing. Participants were equipped with a 16g BioNomadix tri-axial accelerometer attached to the tibia, a Bi-axial electrogoniometer attached at the ankle, two Ag-AgCl surface electrodes attached to the tibialis anterior with adhesive discs, one reference electrode placed on the anteromedial aspect of the tibia (not above a muscle), and a heart rate monitor. Participants completed two data running trials at a target effort of 65-70% of the heart rate reserve. Trials were performed in different shoes (drop heights 4mm(S1) and 11.7mm(S2)) with a minimum 10-minute rest between trials. Paired t-tests were used to compare conditions for each variable. Mean ankle angles at ground contact (S1=100.9(3.8)°, S2=102.6(3.0)°) were not significantly different (t(5)=-1.465, p=0.203) and had a small effect size (Cohen d=0.598). Mean peak tibial accelerations (S1=5.22(2.51g), S2=5.90(2.90)g) were not significantly different (t(5)=-1.238, p=0.271) and had a small effect size (Cohen d=0.505). The mean percentages of maximal EMG for the tibialis anterior (S1=66.2(45.7)%, S2=55.6(38.5)%) were not significant (t(5)=1.380, p=0.226) and had a small effect size (Cohen d=0.563). Though differences were observed between shoe conditions for each participant, the shoe drop height did not significantly affect the measured variables and cannot be assumed to be responsible for these observed differences

Roles of Candida albicans Mig1 and Mig2 in glucose repression, pathogenicity traits, and SNF1 essentiality.

Metabolic adaptation is linked to the ability of the opportunistic pathogen Candida albicans to colonize and cause infection in diverse host tissues. One way that C. albicans controls its metabolism is through the glucose repression pathway, where expression of alternative carbon source utilization genes is repressed in the presence of its preferred carbon source, glucose. Here we carry out genetic and gene expression studies that identify transcription factors Mig1 and Mig2 as mediators of glucose repression in C. albicans. The well-studied Mig1/2 orthologs ScMig1/2 mediate glucose repression in the yeast Saccharomyces cerevisiae; our data argue that C. albicans Mig1/2 function similarly as repressors of alternative carbon source utilization genes. However, Mig1/2 functions have several distinctive features in C. albicans. First, Mig1 and Mig2 have more co-equal roles in gene regulation than their S. cerevisiae orthologs. Second, Mig1 is regulated at the level of protein accumulation, more akin to ScMig2 than ScMig1. Third, Mig1 and Mig2 are together required for a unique aspect of C. albicans biology, the expression of several pathogenicity traits. Such Mig1/2-dependent traits include the abilities to form hyphae and biofilm, tolerance of cell wall inhibitors, and ability to damage macrophage-like cells and human endothelial cells. Finally, Mig1 is required for a puzzling feature of C. albicans biology that is not shared with S. cerevisiae: the essentiality of the Snf1 protein kinase, a central eukaryotic carbon metabolism regulator. Our results integrate Mig1 and Mig2 into the C. albicans glucose repression pathway and illuminate connections among carbon control, pathogenicity, and Snf1 essentiality

Vital Business Educators Perceptions about the Usefulness of Business Education Periodicals

Problem: The business education literature isn’t accessible. Research Questions: Which business education periodicals do vital business educators perceive to be more useful? In which databases and/or indices are they found? How much literature is fugitive? What strategies might increase literature accessibility? Research Method: Delphi technique. Data Collection Procedures:A survey was distributed to 25 vital business educators. Results: The Delta Pi Epsilon Journal and the NABTE Review were rated as essential to the profession; nine periodicals were rated as very useful; and six periodicals were rated as useful. Eleven databases and indices were identified as potentially useful. Conclusions: Approximately 37% of the studied periodicals are fugitive, confirming literature inaccessibility. Recommendations: Strategies to increase the accessibility of the business education literature include libraries carefully selecting complementary databases, getting periodicals indexed, placing periodical tables of contents on the web, improving fugitive-literature retrieval skills, and developing an electronic business education database