66 research outputs found

    SOCCER THROW-IN KINEMATICS

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    Soccer is played extensively throughout the world. As the popularity of soccer increases in America, a development of the teaching and coaching techniques is needed. Despite the increasing amount of soccer literature, the soccer throw-in skill has been understated. Up to date, only a few studies have assessed the throw-in biomechanically (Lueft, 1965; Kline, 1980; Levendusky, 1982) and have provided some descriptive data concerning kinematics and kinetics. The throw-in is a unique throwing motion in that both hands must be used, the ball must come from behind the head forward, and both feet must maintain contact with the ground until release as stipulated by the laws of the game (FIFA, 1977). As a result, the coordination of the upper body movements and the supporting lower body enable a player to throw for longer distances

    First-Class Nonstandard Interpretations by Opening Closures

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    We motivate and discuss a novel functional programming construct that allows convenient modular run-time nonstandard interpretation via reflection on closure environments. This map-closure construct encompasses both the ability to examine the contents of a closure environment and to construct a new closure with a modified environment. From the user’s perspective, map-closure is a powerful and useful construct that supports such tasks as tracing, security logging, sandboxing, error checking, profiling, code instrumentation and metering, run-time code patching, and resource monitoring. From the implementor’s perspective, map-closure is analogous to call/cc. Just as call/cc is a non-referentiallytransparent mechanism that reifies the continuations that are only implicit in programs written in direct style, map-closure is a nonreferentially- transparent mechanism that reifies the closure environments that are only implicit in higher-order programs. Just as CPS conversion is a non-local but purely syntactic transformation that can eliminate references to call/cc, closure conversion is a non-local but purely syntactic transformation that can eliminate references to map-closure. We show how the combination of map-closure and call/cc can be used to implement set! as a procedure definition and a local macro transformation

    Existential witness extraction in classical realizability and via a negative translation

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    We show how to extract existential witnesses from classical proofs using Krivine's classical realizability---where classical proofs are interpreted as lambda-terms with the call/cc control operator. We first recall the basic framework of classical realizability (in classical second-order arithmetic) and show how to extend it with primitive numerals for faster computations. Then we show how to perform witness extraction in this framework, by discussing several techniques depending on the shape of the existential formula. In particular, we show that in the Sigma01-case, Krivine's witness extraction method reduces to Friedman's through a well-suited negative translation to intuitionistic second-order arithmetic. Finally we discuss the advantages of using call/cc rather than a negative translation, especially from the point of view of an implementation.Comment: 52 pages. Accepted in Logical Methods for Computer Science (LMCS), 201

    International Consensus Statement on Rhinology and Allergy: Rhinosinusitis

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    Background: The 5 years since the publication of the first International Consensus Statement on Allergy and Rhinology: Rhinosinusitis (ICAR‐RS) has witnessed foundational progress in our understanding and treatment of rhinologic disease. These advances are reflected within the more than 40 new topics covered within the ICAR‐RS‐2021 as well as updates to the original 140 topics. This executive summary consolidates the evidence‐based findings of the document. Methods: ICAR‐RS presents over 180 topics in the forms of evidence‐based reviews with recommendations (EBRRs), evidence‐based reviews, and literature reviews. The highest grade structured recommendations of the EBRR sections are summarized in this executive summary. Results: ICAR‐RS‐2021 covers 22 topics regarding the medical management of RS, which are grade A/B and are presented in the executive summary. Additionally, 4 topics regarding the surgical management of RS are grade A/B and are presented in the executive summary. Finally, a comprehensive evidence‐based management algorithm is provided. Conclusion: This ICAR‐RS‐2021 executive summary provides a compilation of the evidence‐based recommendations for medical and surgical treatment of the most common forms of RS

    Kentucky Government, Politics, and Public Policy

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    The cornerstone of the American republic is an educated, active, and engaged citizenry; however, the multifaceted inner workings of government and the political forces that shape it are incredibly complex. Kentucky Government, Politics, and Public Policy is the first book in nearly three decades to provide a comprehensive overview of the commonwealth’s major governing and political institutions and the public policy issues that profoundly affect Kentuckians’ daily lives. In this groundbreaking volume, editors James C. Clinger and Michael W. Hail have assembled respected scholars from across the state to inform citizens about their governing institutions, the consequences of their policy choices, and the intricacies of the political process. They provide clear and authoritative information on Kentucky’s government and explain significant trends and patterns, exploring the legacy of the state’s political history and illuminating the contributions of influential Kentucky politicians such as Henry Clay, Abraham Lincoln, and Jefferson Davis. The contributors also address essential topics such as the structure and function of the three branches of government, the constitution, and federalism and intergovernmental relations, as well as administration, budgeting, and finance. They analyze key issues in education policy, economic and community development, and health care in great detail, explaining persistently controversial topics such as campaign finance, the cost of elections, ethics, and the oversight of regulatory agencies. From the executive branch to the legislature, from the court system to political parties, there is no better primer on government in the commonwealth. James C. Clinger is associate professor of government and director of the masters of public administration at Murray State University. Michael W. Hail is professor of government, assistant dean of the School of Public Affairs, and the director of the Master of Public Administration (MPA) and government graduate programs at Morehead State University. With a blend of interviews of current political players, historical information, and hard data, Taking Kentucky Politics Seriously should serve as the go-to text in the library of any student, journalist, scholar or engaged citizen who yearns to understand how Kentucky\u27s government works--or doesn\u27t. -- Ryan Alessi, managing editor of Time Warner Cable\u27s cn|2 political coverage The book will be a valuable reference for those who follow politics and public-policy debates. -- The Courier-Journal The book is overdue because there has been no such comprehensive volume about Kentucky government and politics since the state Senate went Republican 14 years ago... -- Kentucky Standard [...] there is little doubt the book is a historical and cultural exploration of the first order order...If you could only read one book that explains politics in Kentucky, this would...be a good choice. -- Bowling Green Daily Newshttps://uknowledge.uky.edu/upk_political_science_american_politics/1036/thumbnail.jp
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