Difference in Water Status between Oak Trees (Quercus berberidifolia) with Brown and Green Leaves During Severe Drought

In this experiment, we examined cavitation in Quercus berberidifolia plants. We hypothesized that as the amount of water stress increases, then the pressure to cause embolism will decrease. We thought this because as a plant loses more water, the more air bubbles will form within the plant and therefore the pressure to cause this will decrease. We tested this hypothesis by comparing dry Quercus berberidifolia to more hydrated Quercus berberidifolia in Tapia Park, near Malibu, California. We measured and compared these plants by the use of the Scholander Pressure chamber and a parometer. In the end, we discovered that our hypothesis was correct. Our data showed us that less hydrated plants that had more water stress had a lower atmospheric pressure than the more hydrated plants

Coastal Cultural Heritage Protection in the United States, France and the United Kingdom

Exacerbated by climate change, sea levels are rising rapidly. This poses a significant, immediate threat to coastal or riverine urban areas and the tangible cultural heritage (e.g. artifacts, buildings, monuments, archaeological sites) that makes them unique. Protecting coastal cultural resources from climate change is quickly becoming a global priority, and comparing cultural heritage laws designed to protect historic resources in coastal areas from several countries may illuminate potential paths forward. Following a brief discussion of the economic and public health benefits arising from the protection of cultural heritage, this article describes, examines, and compares the legal frameworks through which the United States, France, and the United Kingdom address cultural heritage protection in coastal areas. Several case studies from each country are also presented to demonstrate different preservation initiatives

Coastal Cultural Heritage Protection in the United States, France and the United Kingdom

Exacerbated by climate change, sea levels are rising rapidly. This poses a significant, immediate threat to coastal or riverine urban areas and the tangible cultural heritage (e.g. artifacts, buildings, monuments, archaeological sites) that makes them unique. Protecting coastal cultural resources from climate change is quickly becoming a global priority, and comparing cultural heritage laws designed to protect historic resources in coastal areas from several countries may illuminate potential paths forward. Following a brief discussion of the economic and public health benefits arising from the protection of cultural heritage, this article describes, examines, and compares the legal frameworks through which the United States, France, and the United Kingdom address cultural heritage protection in coastal areas. Several case studies from each country are also presented to demonstrate different preservation initiatives

Effect of metabolic syndrome on mean pulmonary arterial pressures in patients with acute pulmonary embolism treated with catheter-directed thrombolysis

Background: Metabolic syndrome (MetS) has been associated with a procoagulant and hypofibrinolytic state. Current data exploring the role of MetS in venous thromboembolism (VTE) are limited. The objective was to measure the prevalence of MetS in patients with acute PE receiving catheter-directed thrombolysis (CDT) and to investigate its effect on mean pulmonary arterial pressure and overall treatment success. Methods: We used a 3-year prospective registry of ED patients with acute PE with severity qualifying for activation of a PE response team (PERT). All patients had CDT with catheter-measured mPAP and angiography. The presence or absence of MetS components were extracted from chart review based on the following criteria: 1. body mass index (BMI) >30 kg/m2; 2. diagnosed hypertension; 3. diabetes mellitus (including HbA1c >6.5%) and; 4. dyslipidemia (including triglycerides >150 mg/dL or high-density lipoprotein <40 mg/dL). Results: Of the 134 patients, 85% met the criteria for at least one of four MetS components, with obesity being most common, present in 71%. Results demonstrated a positive concordance between the number of criteria for MetS and MPAP, both pre- and post-fibrinolysis, as pressures tended to increase with each additional MetS criterion. Multivariate regression analysis determined age (-), BMI (+) and hypertension (+) to be significant independent predictor variables for mPAP. Conclusions: MetS was common in patients with more severe manifestations of PE and was associated with higher mPAP values both at diagnosis and following treatment with CDT

Book Reviews

Book reviews of: Hattiesburg: An American City in Black and White By William Sturkey. (Cambridge: Harvard University Press, 2019. Acknowledgements, illustrations, map, notes, index. Pp. 442. $29.95 cloth. ISBN 978-0-674-97635-1.) Confederate Generals in the Trans-Mississippi, Volume 3: Essays on America’s Civil War. Edited by Thomas E. Schott and Lawrence Lee Hewitt. (Knoxville: University of Tennessee Press, 2019. Maps, photos, notes, appendix, bibliography, index. Pp. xxiv, 374.$64.95 cloth. ISBN: 978-1-62190-454-0.) Mothers of Massive Resistance: White Women and the Politics of White Supremacy. By Elizabeth Gillespie McRae. (New York: Oxford University Press, 2018. Acknowledgements, Abbreviations, illustrations, notes, index. Pp. xiv, 343. $34.95 hardcover. ISBN: 978-0-19-027171-8.) Poll Power: The Voter Education Project and the Movement for the Ballot in the American South. By Evan Faulkenbury. (Chapel Hill: University of North Carolina Press, 2019. Acknowledgements, illustrations, notes, index. Pp. xi, 200.$90 cloth, $27.95 paper. ISBN: 978-1-4696-5131-6.) Let Us Make Men: The Twentieth Century Black Press and a Manly Vision for Racial Advancement. By D’Weston Haywood. (Chapel Hill: University of North Carolina Press, 2018. Acknowledgements, illustrations, map, notes, index. Pp. xi, 340.$55 cloth, $19.50 paper. ISBN: 978-1-4696-4338-0.) The Man Who Punched Jefferson Davis: The Political Life of Henry S. Foote, Southern Unionist. By Ben Wynne. (Baton Rouge, Louisiana State University Press, 2018. Acknowledgements, illustrations, notes, index. Pp. ix, 323.$47.50 cloth. ISBN: 978-0-8071-6933-9.) Desegregating Dixie: The Catholic Church in the South and Desegregation, 1945-1992. By Mark Newman. (Jackson: University Press of Mississippi, 2018. Acknowledgements, appendices, notes, bibliography, index. Pp. xvii, 455. $90 cloth,$30 paper. ISBN: 978-1-4968-1886-7.) The Loyal Republic: Traitors, Slaves, and the Remaking of Citizenship in Civil War America. By Erik Mathisen. (Chapel Hill: The University of North Carolina Press, 2018. Acknowledgments, illustrations, map, notes, index. Pp. xi, 219. $34.95 cloth. ISBN: 978-1-4696-3632-0.) Aberration of Mind: Suicide and Suffering in the Civil War-Era South. By Diane Miller Sommerville. (Chapel Hill: University of North Carolina Press, 2018. Acknowledgements, notes, bibliography, index. Pp. 448.$105 cloth, $34.95 paper. ISBN: 978-1-4696-4330-4.) Women’s War: Fighting and Surviving the American Civil War. By Stephanie McCurry. (Cambridge, Massachusetts: The Belknap Press of Harvard University Press, 2019. notes, acknowledgements, index. Pp ix, 297.$26.95 hardcover. ISBN: 978-0-674-98797-5.) Lines Were Drawn: Remembering Court-Ordered Integration at a Mississippi High School. Edited By Teena F. Horn, Alan Huffman, and John G. Jones. (Jackson: University Press of Mississippi, 2016. Acknowledgments, illustrations, map, notes, index. Pp. xi, 266. $35 hard back. ISBN: 978-1-62846-231-9.) Industrial Development and Manufacturing in the Antebellum Gulf South: A Reevaluation. By Michael S. Frawley. (Baton Rouge: Louisiana State University Press. 2019. ix, 256 pp. Cloth,$45.00, ISBN 978-0-8071-7068-7.) Integration Now: Alexander v. Holmes and the End of Jim Crow Education. By William P. Hustwit. (Chapel Hill: University of North Carolina Press, 2019. 8 halftones, 1 map, notes, bibl., index. 288 pp. $39.95, hardcover. ISBN: 978-1-4696-4855-2.

A self-determination perspective of strengths use at work: Examining its determinant and performance implications

We investigate the role of strengths use in the workplace by drawing on self-determination theory (SDT) to propose that strengths use at work can yield performance benefits in terms of task performance and discretionary helping, and that the social context, in the form of leader autonomy support, can promote employees’ strengths use. Further, consistent with an interactional psychology perspective, we contend that the relationship between autonomy support and strengths use will be stronger among individuals with strong independent self-construal. We tested the model using matched data from 194 employees and their supervisors and found evidence for the relevance of strengths use at work, even after accounting for the role of intrinsic motivation. In addition to providing practical implications on developing employee strengths use and how to do so, this study advances theory and research on workplace strength use, SDT, and positive organizational behavior

Co-operation in the finitely repeated prisoner’s dilemma

More than half a century after the first experiment on the finitely repeated prisoner’s dilemma, evidence on whether cooperation decreases with experience–as suggested by backward induction–remains inconclusive. This paper provides a meta-analysis of prior experimental research and reports the results of a new experiment to elucidate how cooperation varies with the environment in this canonical game. We describe forces that affect initial play (formation of cooperation) and unraveling (breakdown of cooperation). First, contrary to the backward induction prediction, the parameters of the repeated game have a significant effect on initial cooperation. We identify how these parameters impact the value of cooperation–as captured by the size of the basin of attraction of Always Defect–to account for an important part of this effect. Second, despite these initial differences, the evolution of behavior is consistent with the unraveling logic of backward induction for all parameter combinations. Importantly, despite the seemingly contradictory results across studies, this paper establishes a systematic pattern of behavior: subjects converge to use threshold strategies that conditionally cooperate until a threshold round; and conditional on establishing cooperation, the first defection round moves earlier with experience. Simulation results generated from a learning model estimated at the subject level provide insights into the long-term dynamics and the forces that slow down the unraveling of cooperation

Caribbean Corals in Crisis: Record Thermal Stress, Bleaching, and Mortality in 2005

BACKGROUND The rising temperature of the world's oceans has become a major threat to coral reefs globally as the severity and frequency of mass coral bleaching and mortality events increase. In 2005, high ocean temperatures in the tropical Atlantic and Caribbean resulted in the most severe bleaching event ever recorded in the basin. METHODOLOGY/PRINCIPAL FINDINGS Satellite-based tools provided warnings for coral reef managers and scientists, guiding both the timing and location of researchers' field observations as anomalously warm conditions developed and spread across the greater Caribbean region from June to October 2005. Field surveys of bleaching and mortality exceeded prior efforts in detail and extent, and provided a new standard for documenting the effects of bleaching and for testing nowcast and forecast products. Collaborators from 22 countries undertook the most comprehensive documentation of basin-scale bleaching to date and found that over 80% of corals bleached and over 40% died at many sites. The most severe bleaching coincided with waters nearest a western Atlantic warm pool that was centered off the northern end of the Lesser Antilles. CONCLUSIONS/SIGNIFICANCE Thermal stress during the 2005 event exceeded any observed from the Caribbean in the prior 20 years, and regionally-averaged temperatures were the warmest in over 150 years. Comparison of satellite data against field surveys demonstrated a significant predictive relationship between accumulated heat stress (measured using NOAA Coral Reef Watch's Degree Heating Weeks) and bleaching intensity. This severe, widespread bleaching and mortality will undoubtedly have long-term consequences for reef ecosystems and suggests a troubled future for tropical marine ecosystems under a warming climate.This work was partially supported by salaries from the NOAA Coral Reef Conservation Program to the NOAA Coral Reef Conservation Program authors. NOAA provided funding to Caribbean ReefCheck investigators to undertake surveys of bleaching and mortality. Otherwise, no funding from outside authors' institutions was necessary for the undertaking of this study. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript

Learning behaviours in the workplace: The role of high-quality interpersonal relationships and psychological safety

Organizational learning is an important means for improving performance. Learning is a process, that is, often relational in the sense of relying on interactions between people to determine what needs improving and how to do it. This study addresses the question of how the quality of work relationships facilitates learning behaviours in organizations through the ways it contributes to psychological safety. Data collected from 212 part-time students who hold full-time jobs in organizations operating in a wide variety of industries show that capacities of high-quality relationships (measured at time 1) are positively associated with psychological safety, which, in turn, are related to higher levels of learning behaviours (measured at time 2). The results also show that experiences of high-quality relationships (measured at time 1) are both directly and indirectly (through psychological safety) associated with learning behaviours (measured at time 2). These findings shed light on the importance of quality relationships in the workplace for cultivating and developing perceptions of psychological safety and ultimately learning behaviours in organizations. Copyright © 2008 John Wiley & Sons, Ltd.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/61533/1/932_ftp.pd