Proceedings of the First International Snakehead Symposium

<em>Abstract.</em>—The U.S. Congress directed the U.S. Fish and Wildlife Service (USFWS) to identify, contain, and eradicate Northern Snakehead <em>Channa argus </em>in the United States. Later, the Mississippi River Basin Panel on Aquatic Nuisance Species requested that the Aquatic Nuisance Species Task Force develop a management plan to include additional snakehead species (Channidae) that are, or have the potential to become, invasive in United States waters. Objectives of the snakehead management and control plan, which was developed by USFWS and collaborators, include developing long-term adaptive management and control methods. We developed a Ricker stock-recruit model using Northern Snakehead population data collected in four northern Virginia tidal tributaries during 2009–2015 to inform management and control efforts. The resulting model functional relationship explained 93% of recruitment variability using adult stock size (mean electrofishing catch/h [CPUE] of adults) and mean river flow during May. Recruitment was quantified using boat electrofishing CPUE of age-2 fish lagged for two years, because age-0 and even age-1 fish did not appear to be fully recruited to the gear. Seventy-six percent of recruitment variation was explained by adult abundance, while an additional 17% was explained by mean river flow during May (inverse relationship). Model predictions indicated management efforts to reduce adult stock size, from the optimum of 2–4 fish/h to <0.5 fish/h, should be the most effective tool to reduce recruitment and resulting adult abundance over the long term. That level of adult abundance (approximately 12% of the mean during 2009–2015) should be the target maximum for Northern Snakehead control efforts in the study areas.

1997 ◽  
Vol 24 (1) ◽  
pp. 117-141 ◽  
Author(s):  
T. A. LEE

This study represents part of a long-term research program to investigate the influence of U.K. accountants on the development of professional accountancy in other parts of the world. It examines the impact of a small group of Scottish chartered accountants who emigrated to the U.S. in the late 1800s and early 1900s. Set against a general theory of emigration, the study's main results reveal the significant involvement of this group in the founding and development of U.S. accountancy. The influence is predominantly with respect to public accountancy and its main institutional organizations. Several of the individuals achieved considerable eminence in U.S. public accountancy.


2017 ◽  
Vol 77 (1) ◽  
pp. 171-207 ◽  
Author(s):  
Howard Bodenhorn ◽  
Timothy W. Guinnane ◽  
Thomas A. Mroz

Understanding long-term changes in human well-being is central to understanding the consequences of economic development. An extensive anthropometric literature purports to show that heights in the United States declined between the 1830s and the 1890s, which is when the U.S. economy modernized. Most anthropometric research contends that declining heights reflect the negative health consequences of industrialization and urbanization. This interpretation, however, relies on sources subject to selection bias. Our meta-analysis shows that the declining height during industrialization emerges primarily in selected samples. We also develop a parsimonious diagnostic test that reveals, but does not correct for, selection bias in height samples. When applied to four representative height samples, the diagnostic provides compelling evidence of selection.


2019 ◽  
pp. 135-146
Author(s):  
Lauren Heidbrink

This chapter chronicles how young people experience deportation from the United States to Guatemala. It examines the policies and institutional practices that govern the removal of unaccompanied children and trace the ways in which young people and their families understand and navigate these policies and practices. Through multi-sited ethnographic research in the United States and Guatemala, the chapter reveals the various impacts of the forced “repatriation” of children, exacerbating the very conditions that spurred their migration and causing new interrelated uncertainties and related risks as “deportees.” As they are physically expelled from the United States, deported young people move out of U.S. legal systems. The effects of a forced “return” to their nations of origin produce new challenges such as feelings of isolation and vulnerability as well as danger, such that, in many ways, they continue to be in and moving through regimes of illegality. Demonstrating the long-term and geographically distant effects of the U.S. government’s deportation of children and youth, the chapter outlines the confining character of being out of a system, especially if once in it.


Author(s):  
Allison Varzally

This chapter focuses upon the aftermath of Operation Babylift, the mass airlift of Vietnamese children to the United states on the eve of the nation’s formal withdrawal. Arguably the most dramatic episode of the unfolding adoption and migration story, it received overwhelming media coverage, captured international attention, and pushed Vietnamese adoptees to the center of debates about the war’s end and aftermath. Although the architects of the airlift hoped it would improve the America’s reputation and benefit Vietnamese children, it stoked significant controversy among Americans and Vietnamese who accused the U.S. and Vietnamese governments of playing politics. The airlift and its controversy also displayed the creative ways in which Vietnamese families stretched across national boundaries an, demanded reunions, and disputed American efforts to contain and control the legacies of war.


2016 ◽  
Vol 41 (1) ◽  
pp. 7-48 ◽  
Author(s):  
Stephen Biddle ◽  
Ivan Oelrich

Many analysts worry that improvements in Chinese missile, sensor, guidance, and other technologies will enable China to deny the U.S. military access to parts of the Western Pacific that the United States has long controlled. Although these “antiaccess, area denial” (A2/AD) capabilities are real, they are a geographically limited long-term threat. As both the United States and China deploy A2/AD capabilities, a new era will emerge in which the U.S. military no longer enjoys today's command of the global commons, but is still able to deny China military hegemony in the Western Pacific. In this new era, the United States will possess a sphere of influence around allied landmasses; China will maintain a sphere of influence over its own mainland; and a contested battlespace will cover much of the South and East China Seas wherein neither power enjoys wartime freedom of surface or air movement. This in turn suggests that the Chinese A2/AD threat to U.S. allies is real but more limited than often supposed. With astute U.S. choices, most U.S. allies in this new system will be imperfectly, but substantially, secure.


1983 ◽  
Vol 26 (1) ◽  
pp. 54-68 ◽  
Author(s):  
Richard J. Schonberger ◽  
James P. Gilbert

Traditional U.S. purchasing is under assault. Japanese purchasing practices, featuring frequent “just-in-time” deliveries in small quantities, have made inroads among Japanese subsidiaries in the United States and more recently in the U.S. auto industry. Just-in-time (JIT) buying tends to be accompanied by a host of structural changes: Long-term, stable buyer-supplier relationships; avoidance of annual rebidding; sole-source contracts; improved containerization; and localized buying, to name just a few. The benefits of JIT purchasing, to both buyer and supplier, include lower material costs, higher productivity, and improved qualify. The strategic advantages—growth of market share and stable relationships—can be significant. Geographical vastness is one of several obstacles in the way of widespread use of JIT buying practices in the United States. The companies that have pioneered in the development of JIT purchasing in this country have demonstrated that most of the obstacles are not insurmountable.


2017 ◽  
Vol 11 (4) ◽  
pp. 310-313
Author(s):  
James Clark ◽  
Nicole D. White

Cat allergies are a common and costly problem in the United States. Various drug and nondrug therapies exist to alleviate and control symptoms once allergic disease has developed. However, these therapies are often ineffective or do not address the underlying condition itself. Immunotherapy is an option for patients when symptoms are not adequately controlled by medications and/or avoidance measures, when adverse effects of medications are unacceptable, or when the patient wants to reduce their long-term use of medication. The purpose of this article is to describe the efficacy and safety of immunotherapy when used to prevent or treat cat allergies.


Author(s):  
Anne S. Marsh ◽  
Deborah C. Hayes ◽  
Patrice N. Klein ◽  
Nicole Zimmerman ◽  
Alison Dalsimer ◽  
...  

AbstractInvasive species have a major effect on many sectors of the U.S. economy and on the well-being of its citizens. Their presence impacts animal and human health, military readiness, urban vegetation and infrastructure, water, energy and transportations systems, and indigenous peoples in the United States (Table 9.1). They alter bio-physical systems and cultural practices and require significant public and private expenditure for control. This chapter provides examples of the impacts to human systems and explains mechanisms of invasive species’ establishment and spread within sectors of the U.S. economy. The chapter is not intended to be comprehensive but rather to provide insight into the range and severity of impacts. Examples provide context for ongoing Federal programs and initiatives and support State and private efforts to prevent the introduction and spread of invasive species and eradicate and control established invasive species.


Author(s):  
Jenna Currie-Mueller

Each year, disasters have devastating consequences in the United States. Consequences are long term and extend beyond the disaster’s immediate impact area. Establishing a culture of preparedness is necessary for the U.S. A prepared populace responds more effectively to disasters and is less stressful on community infrastructure and resources during the response phase. One of the ways government organizations and non-government organizations can encourage preparedness actions is via social media. This study examined preparedness messages existing independently of an emerging event disseminated on Twitter by government and non-government organizations. A total of 6,374 tweets were analyzed from data collected during National Preparedness Month. Tweets were analyzed for preparedness content and whether efficacy was included in preparedness messages.


1983 ◽  
Vol 9 (4) ◽  
pp. 235-249 ◽  
Author(s):  
Stephen D. Krasner

What do Third World countries want? More wealth. How can they get it? By adopting more economically rational policies. What should the North do? Facilitate these policies. How should the North approach global negotiations? With cautious optimism. What is the long term prognosis for North–South relations? Hopeful, at least if economic development occurs. This is the common wisdom about relations between industrialized and developing areas in the United States and much of the rest of the North, Within this fold there are intense debates among adherents of conventional liberal, reformist liberal, and interdependence viewpoints. But the emphasis on economics at the expense of politics, on material well-being as opposed to power and control, pervades all of these orientations.


Sign in / Sign up

Export Citation Format

Share Document