Ontogeny of postcranial morphology and locomotor behavior in Propithecus verreauxi coquereli and Lemur catta

Despite living under the same environmental pressures and sympatrically in many cases, Propithecus verreauxi and Lemur catta have evolved very different strategies for survival in stochastic environmental conditions. P. verreauxi show slow somatic growth, low maternal investment, and rapid dental growth while L. catta show faster somatic growth, high maternal investment, and slower dental growth. P. v. coquereli are highly specialized for vertical clinging and leaping (VCL) among lemurs, while L. catta, the most terrestrial of lemurs, use a wider variety of locomotor types including quadrupedalism, climbing, and leaping. P. v. coquereli have unusually long legs and muscular thighs while L. catta have more similar limb lengths and muscular proximal limb segments (Lessertisseur and Jouffroy, 1973; Jouffroy, 1975). Little is known of the ontogenetic trajectories by which these adult forms are acquired. Because selection acts on the entire life cycle of an animal, it is important to investigate the morphological and locomotor changes occurring early in development. These changes might be important components to each species’ survival strategy that allow infant primates to travel with a group of larger adults and survive to adulthood. I examined changes in locomotor behavior and limb morphology from 0-2 years in L. catta and P. v. coquereli. Limb segment lengths, limb segment circumferences, and body mass were recorded every 2 weeks in infants and every 4 weeks in yearlings at the Duke Lemur Center (DLC). Locomotor data were collected on infants transitioning to locomotor independence and yearlings of each species in free-ranging enclosures at the DLC using locomotor bout sampling. Results indicate that both species are born with upper limb lengths similar to lower limb lengths, whereas only P. v. coquereli dissociates upper- and lower limb growth to reach adult limb proportions. P. v. coquereli transitional infants and yearlings use similar overall locomotor behavior and undergo rapid postcranial growth to achieve the limb proportions necessary for VCL by the time of locomotor independence. Relative to upper limb length, lower limb length is even longer in juveniles first leaping independently than in yearlings and adults. Relatively long hindlimbs may allow juveniles to achieve leaping take-off velocity similar to adults despite absolutely smaller size. L. catta transitional infants exhibit a different distribution of locomotor behavior than yearlings despite similarities in limb proportions. Much like P. v. coquereli juveniles are “ecological adults” in terms of their rapid dental development, they seem to also be “ecological adults” in terms of locomotor behavior. Because of the demand for using VCL at a young age, and despite overall slow postcranial growth, P. v. coquereli transitional infants are on a rapid growth trajectory towards achieving the limb proportions necessary for specialized leaping. Lowest IMI values at locomotor independence, increased leap frequency paired with decreased leap distance, and high positive allometric growth of the tail are three key findings that provide evidence as to how P. v. coquereli transitional infants are able to display similar locomotor repertoires as yearlings in order to keep up with the group to survive, despite being absolutely smaller

Hoisted by their Own Petard: The Emergence of Sri Lankan Buddhist Printing and Counter-Christian Activities

This contribution describes the emergence of print technology in Sri Lanka and the role it played in shaping modern Sri Lankan Buddhism, as exemplified by the case study of the textual transmission of the Mahāvaṃsa, a chronicle of the history of Sri Lanka. The first part is devoted to a description of the reception of this work in the European scholarly tradition, followed by a brief examination of the interaction of oral and manuscript transmission of Buddhist texts in pre-modern Sri Lankan Buddhist culture and society. Vaṃsa literature can be seen as a product of the change from orality to writing. The establishment of printing culture in the nineteenth century however changed the status of this type of literature. The rediscovery of vaṃsa literature by European scholars caused a change in the reception and use of this genre in Sri Lanka. Thus, in recent times vaṃsas are seen as historical literature and play an important part in Sinhala Nationalism

Non-Traditional Distance Learners: Student Persistence In A Rural Remote Community

Cook County Higher Education (CCHE), a non-profit distance education resource center located in rural northeastern Minnesota, has student completion rates of 90% and higher. CCHE has attributed the student persistence to its external support services, such as mentoring, technology support, study skills, attitude, and financial resources. With the national call for increased degrees per capita, there is also increased incentive for higher education institutions to become more creative in offering external support services to their non-traditional distance learning students. This grounded theory method research project explored rural students\u27 perceptions of what motivates them to persist in distance learning programs. Thick, narrative responses were drawn from a focus group with current students, and individual interviews were conducted with students who had completed or withdrawn from degree programs. My rationale was premised on the assumption that providing support resources contributes to higher retention rates. Results from this study concluded that rural distance learners need a high level of support services from the learner\u27s institution and local community to balance the extraordinary challenges they face due to their remote location and limited access to support services, and for rural distance learners to be successful, the instructor has to take a pro-active role in supporting his or her students

The Impact of Prenatal Stress on the Mother-Infant Behavior at six Months after Birth: The Role of different Dimensions of Stress.

Early life stress is known to influence mothers and consequently also the infant pre-, peri-, and postnatally. Both stress sensitization and inoculation theories have speculated about the conflicting previous findings of beneficial as well as impairing influences of early life stress. Findings of an impact on infant development, behavior and later vulnerability for cognitive and emotional problems, physical diseases and mental disorders, suggested the need to identify possible pathways between early life stress and infant outcome. Suggested underlying processes, such as fetal programming, were discussed. The present thesis focused on the possible impact of prenatal maternal stress on mother-infant dyadic behavior in a standardized observation paradigm, i.e. the still-face paradigm. Study I aimed to illuminate the prospective influence of psychological and physiological stress during pregnancy on mother-infant dyadic behavior in the first play episode of the still-face paradigm. In Study II, both the first play episode and the reunion episode were investigated. In Study I, the first play episode of the still-face paradigm was investigated. The findings provided evidence of an impact of psychosocial prenatal stress on mother-infant dyadic behavior during the normal mother-infant play, as it was expected for the first play episode. Mother-infant dyads with more psychosocial PS in pregnancy showed significantly more positive dyadic behavior then the less stressed dyads. The same was found for perceived maternal prenatal stress, although the effect vanished when analyses were conducted including all covariates. Hence, the findings were considered as providing only restricted evidence. No other stress index (i.e., psychopathological PS, cortisol decline and cortisol AuCg) reached significance in predicting mother-infant dyadic play behavior. In Study II, the impact of prenatal stress on mother-infant dyadic behavior in both play situations of the still-face paradigm was investigated. The dyadic behavior in the first play episode was compared with that in the reunion episode. The results provided evidence for the “still-face” and “carry-over” effect, with mother-infant dyads in both the high- and low-stress groups showing decreasing positive and increasing negative dyadic behavior in the reunion episode. Here too, mother-infant dyads with higher psychosocial prenatal stress showed significantly more positive dyadic behavior in the first play episode, but not in the reunion episode. In the latter episode, the positive behavior of the dyads with high prenatal stress decreased to approximately the same level as that of the dyads with low stress. In Study II, significant results emerged for physiological stress dimensions, with mother-infant dyads with a prenatally flat diurnal cortisol decline and low diurnal cortisol AUCg levels showing a distinctive, significant increase in negative dyadic behavior in the reunion episode. Mediation analyses run in both studies showed that maternal behavior was not a significant mediator between prenatal stress and infant behavior. The present findings contribute to inoculation theories on the impact of stress. Nevertheless, both studies provide merely a glimpse into the complex relationship of early life stress factors, maternal and environmental factors, and the infant’s development. Taken together, given the vast amount of studies reporting an impairing impact of prenatal stress on the infant, the present results should be interpreted with caution. The results add further support to the idea of individual resilience factors, suggesting that some individuals are not influenced by stressors or even benefit from them. Future research should focus on the underlying mechanisms, such as early programming, sensitive time periods in infant development, as well as possible influencing factors, in order to contribute to the explaining the mixed results, and to inform the creation of preventive programs for mothers and infants

Low Income Urban Forestry Program in Tucson, Arizona, USA

Tucson is located in the Sonoran Desert, 117 km north of the US-Mexico border. The borderland region is an area experiencing increased temperatures and changing precipitation patterns caused by the combustion of greenhouse gases. Planting drought-tolerant trees to provide cooling shade has been an important mitigation strategy for Tucson and other arid cities. From 2007 to 2013, the Sonora Environmental Research Institute, Inc. (SERI) collaborated with Trees for Tucson (TFT) to distribute drought-resistant trees to low income families in south metropolitan Tucson. The Pima Association of Governments has found that this area has significantly less green spaces than other areas of Tucson. SERI conducted an extensive bilingual community outreach to recruit families, and presented tree stewardship information to families in both English and Spanish. Chilean mesquite (Prosopis chilensis and Prosopis chilensis hybrid), red push pistache (Atlantica X Integerrima), and blue palo verde (Parkinsonia florida) had the highest survival rates while willow acacia (Acacia salicina) and sweet acacia (Acacia farnesiana) had the lowest survival rates. Acacia salicina is less cold tolerant, and a severe frost in February of 2011 may have contributed to its higher mortality

A Comparison of Wine Purchasing Behaviors in Ireland and California When the Celtic Tiger Roared

In 2006 the Irish wine market was growing rapidly along with its Celtic Tiger economy (Euromonitor, 2008). Total wine sales in Ireland more than quadrupled in the seventeen-year span from 1990 to 2007 (Geraghty and Torres, 2009). While wine consumption in Ireland was growing at a rapid rate, US consumption was growing, but at a slower rate. (Euromonitor, 2010). According to Moran, Ireland’s increased consumption of wine was due primarily to improved accessibility, affordability, and branding of wine. Geraghty and Torres conducted research in Galway Ireland in 2006 among 307 wine consumers and identified three clusters of wine consumers in Ireland: the casual wine buyer, the value seeking wine buyer, and the wine traditionalist (Geraghty , 2009). These clusters provided insight into the consumers behind the increase in wine consumption. The recent recession however, has caused the wine sector in Ireland to plummet (Euromonitor, 2010)

Anticoagulation in Atrial Fibrillation Patients

Atrial fibrillation (AF) is the most common arrhythmia and may cause thromboembolic events, typically stroke. Advances in pharmacological approaches to anticoagulation and groundbreaking large randomized controlled trials of non-vitamin K antagonist oral anticoagulants (NOACs) have changed the paradigm of anticoagulation therapy. Furthermore, observational studies support the efficacy and safety of NOAC. Few studies address the differences among NOACs, but prescriptions should be based on a thorough understanding of their pharmacological differences, including interactions, side effects, reversibility, and practical approach. In a subset of patients with AF, warfarin may still be the preferable option. Consequently, an individualized approach to oral anticoagulation is crucial

'The heart of what we do': policies on teaching, learning and assessment in the learning and skills sector

One of the stated aims of government policy in England is to put teaching, training,and learning at the heart of the learning and skills system. This paper provides a critical review of policies on teaching, learning and assessment in the learning and skills sector over the past five years. It draws upon data collected and analysed in the early stages of an ESRC-funded Teaching and Learning Research Programme project. Using evidence from policy sources, we argue that despite policy rhetoric about devolution of responsibility to the 'front line', the dominant 'images' that government has of putting teaching, learning and assessment at the heart of the Learning and Skills Sector involves a narrow concept of learning and skills; an idealisation of learner agency lacking an appreciation of the pivotal role of the learner/tutor relationship and a top-down view of change in which central government agencies are relied on to secure education standards

Psychotherapy Versus Pharmacotherapy For Posttraumatic Stress Disorder: Systemic Review And Meta-Analyses To Determine First-Line Treatments

Background: Current clinical practice guidelines (CPGs) for posttraumatic stress disorder (PTSD) offer contradictory recommendations regarding use of medications or psychotherapy as first-line treatment. Direct head-to-head comparisons are lacking. Methods: Systemic review of Medline, EMBASE, PILOTS, Cochrane Central Register of Controlled Trials, PsycINFO, and Global Health Library was conducted without language restrictions. Randomized clinical trials \u3e8 weeks in duration using structured clinical interview-based outcome measures, active-control conditions (e.g. supportive psychotherapy), and intent-to-treat analysis were selected for analyses. Independent review, data abstraction, and bias assessment were performed using standardized processes. Study outcomes were grouped around conventional follow-up time periods (3, 6, and 9 months). Combined effect sizes were computed using meta-analyses for medication versus control, medication pre-/posttreatment, psychotherapy versus control, and psychotherapy pre-/posttreatment. Results: Effect sizes for trauma-focused psychotherapies (TFPs) versus active control conditions were greater than medications versus placebo and other psychotherapies versus active controls. TFPs resulted in greater sustained benefit over time than medications. Sertraline, venlafaxine, and nefazodone outperformed other medications, although potential for methodological biases were high. Improvement following paroxetine and fluoxetine treatment was small. Venlafaxine and stress inoculation training (SIT) demonstrated large initial effects that decreased over time. Bupropion, citalopram, divalproex, mirtazapine, tiagabine, and topiramate failed to differentiate from placebo. Aripiprazole, divalproex, guanfacine, and olanzapine failed to differentiate from placebo when combined with an antidepressant. Conclusions: Study findings support use of TFPs over nontrauma-focused psychotherapy or medication as first-line interventions. Second-line interventions include SIT, and potentially sertraline or venlafaxine, rather than entire classes of medication, such as SSRIs. Future revisions of CPGs should prioritize studies that utilize active controls over waitlist or treatment-as-usual conditions. Direct head-to-head trials of TFPs versus sertraline or venlafaxine are needed