‘What About the Dog?’: Tobit’s Mysterious Canine Revisited.

Readers have long wondered what is the meaning of the dog that briefly appears in the Jewish fairy tale known as the Book of Tobit. This article considers common answers such as influence from Ahikar, the Odyssey, influence of Persian culture and influence of folktale and goes into depth of the dog's significance in human culture, especially in connection with healing and defeating dragons and evil spirits and raises questions about the dog's possible connection to the archangel Raphael

The Crisis of the Late Third Millennium B.C: Ecofactual and Artificial Evidence From Umm el-Marra and the Jabbul Plain

This article presents a reading of the data of Umm el-Marra (plain Jabbul, western Syria), relating to the transition from the Bronze Age and Middle Bronze Age may contribute to the identification of a crisis during this period. Results of analyzes archaeobotanical, published for the first time, are also discussed. In Umm el-Marra, social, economic and cultural changes coincide with a change in material culture during the transition BA - BM; in some cases, it seems plausible to associate these changes to a crisis by crossing the complex local companies, but other interpretations are also possible. Among these, it is possible that around 2000 BC. AD Umm el Marra was abandoned temporarily and V that the earliest occupation of Middle Bronze is relatively small extension. The ideological and political change is illustrated by the abandonment of mortuary complex Bronze final of the Acropolis ancient site, for an elite, and by changes in mortuary practices between the Bronze Age and Middle Bronze Age. Economic innovations are evident in the Middle Bronze Age in the significant increase in the hunting of wild animals, especially horses, a practice that can be interpreted as a response to a natural or social environment experiencing high stress. Alongside this development, archaeobotanical data indicate a change in feed-related practices. The decline in occupancy in the semi-arid part of the Eastern Jabbul during the transition BA - BM could be interpreted as indicative of a crisis; this, however, like the other mentioned here needs to be deepened by further research

Earth, wind, water, fire: Interactions between land-use and natural disturbance in tropical second-growth forest landscapes

Climate models predict changes to the frequency and intensity of extreme events, with large effects on tropical forests likely. Predicting these impacts requires understanding how landscape configuration and land-use change influence the susceptibility of forests to disturbances such as wind, drought, and fire. This is important because most tropical forests are regenerating from anthropogenic disturbance, and are located in landscape mosaics of forest, agriculture, and other land use. This dissertation consists of four chapters that combine remote sensing and field data to examine causes and consequences of disturbance and land-use change in tropical second-growth forests. In Chapter 1, I use satellite data to identify factors associated with permanence of second-growth forest, and assess how estimates of carbon sequestration vary under different assumptions about second-growth forest permanence. I show that most second-growth forest is cleared when young, limiting carbon sequestration. In Chapter 2, I combine data from weather stations, remote sensing, and landowner surveys to model fire activity on 732 farms in the study area over ten years. The relative importance of these factors differs across scales and depending on the metric of fire activity being considered, illustrating how implications for fire prevention and mitigation can be different depending on the metric considered. Chapter 3 combines Landsat imagery and field data to map wind damage from a severe convective storm, providing strong empirical evidence that vulnerability to wind disturbance is elevated in tropical forest fragments. Finally, in Chapter 4 I integrate annual forest census data with LiDAR-derived topography metrics and tree functional traits in a hierarchical Bayesian modeling framework to explore how drought, topography, and neighborhood crowding affect tree growth, and how functional traits modulate those effects. The results from these studies demonstrate innovative approaches to understanding spatial variation in forest vulnerability to disturbance at multiple scales, and the results have implications for managing forests in a changing climate

Fire ecology and fire management in the Southern Appalachians: rationale for and effects of prescribed fire

Fire suppression in the Southern Appalachians has led to changes in forests dominated by yellow pine (Pinus subgenus pinus) and oak (Quercus) species. Recently, management agencies have begun to prescribe fire with the aim of restoring pre-suppression conditions. Here, I examine the use of prescribed fire in the Southern Appalachians from two perspectives. First, I review the values and goals that underlie fire management, how they apply in the Southern Appalachians, and what the implications of these are for fire management planning. Second, I use long-term monitoring data to examine how prescribed fire affects forest structure and composition in the Great Smoky Mountains National Park and how these effects vary with environment and fire severity. I find that prescribed fire creates conditions conducive for pine reproduction and is particularly effective at high severity and at lower elevation sites where fire sensitive species are still confined to smaller size classes.Master of Scienc

A suggested speechreading program for the elderly adult

This paper includes an outline for a speechreading program for elderly adults

The mentored experience to enhance opportunities in research (METEOR) program.

PROBLEM: Medical students from groups that are underrepresented in medicine are less likely to pursue careers that incorporate research as compared to their white peers. Clinical and Translational Science Award (CTSA)-funded institutions encouraged centers to establish short-term, mentored summer research opportunities to motivate students underrepresented in medicine to enroll in medical school and ideally choose a career that incorporates research into their clinical practice. APPROACH: The Mentored Experience To Enhance Opportunities in Research (METEOR) Program was established in 2012 in partnership with the Clinical and Translational Science Institute at Children\u27s National (CTSI-CN) and The George Washington University (GW) School of Medicine and Health Sciences. Rather than a single summer experience, the METEOR Program is innovative in that it is intended to support the success of participants throughout the duration of their medical school training and beyond. OUTCOMES: Scholarly output of participants of the first four cohorts included 23 empirical research articles in peer-reviewed journals, five review articles, eight case reports, one empirical research article in a student-led journal, one commentary in a professional journal, 20 university-based poster presentations, three national poster presentations, and one international poster presentation. Interviews revealed themes aligned with constructs of the Social Cognitive Career Theory. Overall mentorship was seen as a key component of the METEOR Program. In addition, the ability to come to campus prior to the start of medical school, as part of a cohesive cohort, along with the addition of lectures and field trips, further enhanced participants\u27 experiences. NEXT STEPS: Our findings will be incorporated into improvements to the program for future cohorts and may inform the design of similar mentored research programs. With increased enrollment, quantitative studies of the effectiveness of the program are planned

Fragmentation Increases Impact of Wind Disturbance on Forest Structure and Carbon Stocks in a Western Amazonian Landscape

Tropical second-growth forests could help mitigate climate change, but the degree to which their carbon potential is achieved will depend on exposure to disturbance. Wind disturbance is common in tropical forests, shaping structure, composition, and function, and influencing successional trajectories. However, little is known about the impacts of extreme winds in fragmented landscapes, though second-growth forests are often located in mosaics of forest, pasture, cropland, and other land cover types. Though indirect evidence suggests that fragmentation increases risk of wind damage, few studies have found such impacts following severe storms. In this study, we ask whether fragmentation and forest type (old vs. second growth) were associated with variation in wind damage after a severe convective storm in a fragmented production landscape in western Amazonia. We applied linear spectral unmixing to Landsat 8 imagery from before and after the storm, and combined it with field observations of damage to map wind effects on forest structure and biomass (Figure 4, 5). We also used Landsat 8 imagery to map land cover with the goals of identifying old- and second-growth forest and characterizing fragmentation. We used these data to assess variation in wind disturbance across 95,596 hectares of forest, distributed over 6,110 patches. We find that fragmentation is significantly associated with wind damage, with damage severity higher at forest edges and in edgier, more isolated patches (Figure 7). Damage was more severe in old-growth than in second-growth forests, but this effect was weaker than that of fragmentation (Figure 8). These results illustrate the importance of considering spatial configuration and landscape context in planning tropical forest restoration and predicting carbon sequestration in second-growth forests. Future research should address the mechanisms behind these results, to minimize wind damage risk in second-growth forests so their carbon potential can be maximally achieved

Reversals of Reforestation Across Latin America Limit Climate Mitigation Potential of Tropical Forests

Carbon sequestration through tropical reforestation and natural regeneration could make an important contribution to climate change mitigation, given that forest cover in many tropical regions increased during the early part of the 21st century. The size of this carbon sink will depend on the degree to which second-growth forests are permanent and protected from re-clearing. Yet few studies have assessed permanence of reforestation, especially not at a large spatial scale. Here, we analyzed a 14-year time series (2001–2014) of remotely sensed land-cover data, covering all tropical Latin America and the Caribbean, to quantify the extent of second-growth forest permanence. Our results show that in many cases, reforestation in Latin America and the Caribbean during the early 21st century reversed by 2014, limiting carbon sequestration. In fact, reversals of reforestation, in which some or all gains in forest cover in the early 2000s were subsequently lost, were ten times more common than sustained increases in forest cover. Had reversals of reforestation been avoided, forests could have sequestered 0.58 Pg C, over four times more carbon than we estimate was sequestered after accounting for impermanence (0.14 Pg), representing a loss of 75% of carbon sequestration potential. Differences in the prevalence of reforestation reversals across countries suggest an important role for socio-economic, political, and ecological context, with political transitions and instability increasing the likelihood of reversals. These findings suggest that national commitments to reforestation may fall short of their carbon sequestration goals without provisions to ensure long-term permanence of new forests.Fil: Schwartz, Naomi B.. University of British Columbia; CanadáFil: Aide, T. Mitchell. Universidad de Puerto Rico; Puerto RicoFil: Graesser, Jordan. University of Queensland; AustraliaFil: Grau, Hector Ricardo. Universidad Nacional de Tucumán. Instituto de Ecología Regional. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Ecología Regional; ArgentinaFil: Uriarte, María. Columbia University; Estados Unido

Excavation and Survey in the Jabbul Plain, Western Syria: The Umm el-Marra Project 1996-1997

The 1996 and 1997 seasons of the Hopkins-Amsterdam project in the Jabbul plain, western Syria, have generated new results on Bronze Age urbanism at Tell Umm el- Marra and elucidated longer-term settlement patterns in the Jabbul region. Excavation results have documented the foundation of Umm el-Marra as a regional center in the Early Bronze Age, provided new data on a period of decentralization in Middle Bronze I, and supplied evidence of the regeneration of urbanism in MB II. Faunal and archaeobotanical analysis broaden our understanding of these developments, attesting to an economy overwhelmingly dependent on the steppe environment, with an emphasis on large-scale onager hunting in MB II. Finally, a regional survey provides data on long-term demographic and socioeconomic trends, furnishing an expansive time range and spatial context for our under- standing of developmental patterns in the region. The survey results supply new information on the limits of the Uruk expansion, cycles of Bronze Age urbanization, changing patterns of steppe exploitation, and demo- graphic and agricultural extensification in the Byzantine and Early Islamic periods