scholarly journals A continental system for forecasting bird migration

2018 ◽  
Author(s):  
Benjamin M. Van Doren ◽  
Kyle G. Horton

AbstractBillions of animals cross the globe each year during seasonal migrations, but efforts to monitor them are hampered by the irregularity and relative unpredictability of their movements. We developed a bird migration forecast system with continental scope by leveraging 23 years of spring observations to learn associations between atmospheric conditions and bird migration intensity. Our models explained up to 81% of variation in migration intensity across the United States at altitudes of 0-3000 m, and performance remained high when forecasting events 24-72 h into the future (68-72% variation explained). We infer that avian migratory movements across the United States frequently exceed 200 million individuals per night and exceed 500 million individuals per night during peak passage. Accurately forecasting bird migration will allow stakeholders to reduce collisions with illuminated buildings, airplanes, and wind turbines, predict movements under climate change scenarios, and engage the public.


Science ◽  
2018 ◽  
Vol 361 (6407) ◽  
pp. 1115-1118 ◽  
Author(s):  
Benjamin M. Van Doren ◽  
Kyle G. Horton

Billions of animals cross the globe each year during seasonal migrations, but efforts to monitor them are hampered by the unpredictability of their movements. We developed a bird migration forecast system at a continental scale by leveraging 23 years of spring observations to identify associations between atmospheric conditions and bird migration intensity. Our models explained up to 81% of variation in migration intensity across the United States at altitudes of 0 to 3000 meters, and performance remained high in forecasting events 1 to 7 days in advance (62 to 76% of variation was explained). Avian migratory movements across the United States likely exceed 500 million individuals per night during peak passage. Bird migration forecasts will reduce collisions with buildings, airplanes, and wind turbines; inform a variety of monitoring efforts; and engage the public.



2018 ◽  
Author(s):  
Jon Jachimowicz ◽  
Andreas Wihler ◽  
Erica Bailey ◽  
Adam Galinsky

Grit has captured the public imagination and crept into educational policy throughout the United States. However, because prior studies linking grit and performance are beset by contradictory evidence, commentators increasingly state that grit is over-hyped. We propose that the inconsistency between grit's initial promise and its subsequent lack of empirical support has occurred because grit's measurement has not matched its definition. Although grit is defined as the combination of perseverance and passion, its measurement has focused on perseverance and has not adequately captured passion. In a meta-analysis of 127 studies and two field studies, we show that passion is a key component of grit. The current theory and results suggest that perseverance without passion isn't grit, but merely a grind.



2019 ◽  
Vol 35 (2) ◽  
pp. 255-281
Author(s):  
Sylvia Dümmer Scheel

El artículo analiza la diplomacia pública del gobierno de Lázaro Cárdenas centrándose en su opción por publicitar la pobreza nacional en el extranjero, especialmente en Estados Unidos. Se plantea que se trató de una estrategia inédita, que accedió a poner en riesgo el “prestigio nacional” con el fin de justificar ante la opinión pública estadounidense la necesidad de implementar las reformas contenidas en el Plan Sexenal. Aprovechando la inusual empatía hacia los pobres en tiempos del New Deal, se construyó una imagen específica de pobreza que fuera higiénica y redimible. Ésta, sin embargo, no generó consenso entre los mexicanos. This article analyzes the public diplomacy of the government of Lázaro Cárdenas, focusing on the administration’s decision to publicize the nation’s poverty internationally, especially in the United States. This study suggests that this was an unprecedented strategy, putting “national prestige” at risk in order to explain the importance of implementing the reforms contained in the Six Year Plan, in the face of public opinion in the United States. Taking advantage of the increased empathy felt towards the poor during the New Deal, a specific image of hygienic and redeemable poverty was constructed. However, this strategy did not generate agreement among Mexicans.



Author(s):  
Halyna Shchyhelska

2018 marks the 100th anniversary of the proclamation of Ukrainian independence. OnJanuary 22, 1918, the Ukrainian People’s Republic proclaimed its independence by adopting the IV Universal of the Ukrainian Central Rada, although this significant event was «wiped out» from the public consciousness on the territory of Ukraine during the years of the Soviet totalitarian regime. At the same time, January 22 was a crucial event for the Ukrainian diaspora in the USA. This article examines how American Ukrainians interacted with the USA Government institutions regarding the celebration and recognition of the Ukrainian Independence day on January 22. The attention is focused on the activities of ethnic Ukrainians in the United States, directed at the organization of the special celebration of the Ukrainian Independence anniversaries in the US Congress and cities. Drawing from the diaspora press and Congressional Records, this article argues that many members of Congress participated in the observed celebration and expressed kind feelings to the Ukrainian people, recognised their fight for freedom, during the House of Representatives and Senate sessions. Several Congressmen submitted the resolutions in the US Congress urging the President of United States to designate January 22 as «Ukrainian lndependence Day». January 22 was proclaimed Ukrainian Day by the governors of fifteen States and mayors of many cities. Keywords: January 22, Ukrainian independence day, Ukrainian diaspora, USA, interaction, Congress



1994 ◽  
Vol 21 (1) ◽  
pp. 255-273 ◽  
Author(s):  
Onker N. Basu

In accounting research, the role of organizational leaders has been underrepresented. The limited research dealing with leadership issues has focused on the impact of leadership on micro activities such as performance evaluation, budget satisfaction, and audit team performance. The impact of leadership on the structure of accounting and audit systems and organizations has been ignored. This paper focuses on the impact that past Comptrollers General have had on the working and structure of one federal audit agency, the United States General Accounting Office (GAO). In addition, it also focuses on the influence of the two most recent Comptrollers General on one important audit related activity, i.e., the audit report review process. Using qualitative field research methods, this paper documents how the organizational leadership impacts its long-term audit practices and thereby influences auditing, especially in the public sector.



Author(s):  
William W. Franko ◽  
Christopher Witko

The authors conclude the book by recapping their arguments and empirical results, and discussing the possibilities for the “new economic populism” to promote egalitarian economic outcomes in the face of continuing gridlock and the dominance of Washington, DC’s policymaking institutions by business and the wealthy, and a conservative Republican Party. Many states are actually addressing inequality now, and these policies are working. Admittedly, many states also continue to embrace the policies that have contributed to growing inequality, such as tax cuts for the wealthy or attempting to weaken labor unions. But as the public grows more concerned about inequality, the authors argue, policies that help to address these income disparities will become more popular, and policies that exacerbate inequality will become less so. Over time, if history is a guide, more egalitarian policies will spread across the states, and ultimately to the federal government.



Sign in / Sign up

Export Citation Format

Share Document