1,821 research outputs found

    Integrating Manufacturing Issues into Structural Optimization

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    This dissertation aims to advance the field of structural optimization by creating and demonstrating new methodologies for the explicit inclusion of manufacturing issues. The case of composite aerospace structures was a main focus of this work as that field provides some of the greatest complexities in manufacturing yet also provides the greatest incentives to optimize structural performance. Firstly, the possibilities for modifying existing FEA based structural optimization methods to better capture manufacturing constraints are investigated. Examples of brick-based topology optimization, shell-based topology optimization, parametric sizing optimization and manufacturing process optimization are given. From these examples, a number of fundamental limitations to these methods were observed and are discussed. The key limitation that was uncovered related to a dichotomy between analytical methods (such as FEA) and CAD-type methods. Based on these observations, a new Knowledge-Based framework for structural optimization was suggested whereby manufacturing issues are integrally linked to the more conventional structural issues. A prototype system to implement this new framework was developed and is discussed. Finally, the validity of the framework was demonstrated by application to a generic composite rib design problem

    The Man From Snowy River and Other Verses

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    https://commons.und.edu/settler-literature/1099/thumbnail.jp

    Transdisciplinary Research on Sustainability in Europe conference discuss funding mechanism recommendations for the European Commission

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    Hlavním cílem mezinárodní konference “Transdisciplinární výzkum udržitelnosti v Evropě” (Transdisciplinary Research on Sustainability in Europe), uspořádané Centrem pro otázky životního prostředí UK společně s Schumacher Institute for Sustainable Systems (Velká Británie) ve dnech 23.-24. května 2013, bylo prodiskutovat toto relativně nové vědecké téma a v několika bodech formulovat doporučení s ohledem na budoucí vědecké příležitosti v této oblasti pro Evropskou komisi. Konference zahrnovala přednášky šesti odborníků z různých evropských institucí, krátké příspěvky a postery dalších účastníků a následné širší diskuze.Modify funding guidelines to facilitate greater transdisciplinary research for sustainable development. That was the message to the European Commission made loud and clear by academic and NGO sustainable development practitioners in Prague recently as a result of a Transdisciplinary Research on Sustainability (TDRS) in Europe conference held on 23 and 24 May.

    Environmental mining limits in the North Bohemian Lignite Region

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    Recenze knihy Environmental mining limits in the North Bohemian Lignite Region(v originále Územní ekologické limity težby v Severočeské hnědouhelné pánvi) od Andrew Bartona shrnuje poznatky z knihy původně publikované v roce 2005 v češtině a zasazuje je do současného kontextu.Book review: Říha, M., Stoklasa, J., Lafarová, M., Dejmal, I., Marek, J., Pakosta, P., Beránek, K. Environmental mining limits in the North Bohemian Lignite Region. Společnost pro krajinu, Praha 2005. Translation: Petr Kurfürst.This book review looks at the issue of mining limits in the region of North-West Bohemia in the Czech Republic and briefly summarises from the content of the book originally published in 2005 (in Czech, but later translated into English) supplemented with the most up-to-date information on the current situation

    The Top 20 Greatest Banjo Paterson Poems of All Time

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    https://commons.und.edu/settler-literature/1097/thumbnail.jp

    What are the current challenges facing Central Europe?

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    Dne 24. dubna 2013 se na Filozofické fakultě Univerzity Karlovy v Praze konal třetí ročník mezinárodní konference “Naše společná přítomnost” (Our Common Present). Letos byly tématem této interdisciplinární konference “Současné výzvy Střední Evropy”. Článek představuje hlavní přednášející, jejich příspěvky a závěry z konference.This was the theme of the third annual international interdisciplinary conference Our Common Present which took place at Charles University’s Philosophical Faculty on 24 April 2013 in cooperation between the University of South Bohemia’s Economics Faculty, the Charles University Environment Center, and the University of Hradec Králové’s Education Faculty

    EXPLORING THE POTENTIAL OF A MACHINE TEAMMATE

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    Artificial intelligence has been in use for decades. It is already deployed in manned formations and will continue to be fielded to military units over the next several years. Current strategies and operational concepts call for increased use of artificial-intelligence capabilities across the defense enterprise—from senior leaders to the tactical edge. Unfortunately, artificial intelligence and the warriors that they support will not be compatible "out of the box." Simply bolting an artificial intelligence into teams of humans will not ensure success. The Department of Defense must pay careful attention to how it is deploying artificial intelligences alongside humans. This is especially true in teams where the structure of the team and the behaviors of its members can make or break performance. Because humans and machines work differently, teams should be designed to leverage the strengths of each partner. Team designs should account for the inherent strengths of the machine partner and use them to shore up human weaknesses. This study contributes to the body of knowledge by submitting novel conceptual models that capture the desired team behaviors of humans and machines when operating in human-machine teaming constructs. These models may inform the design of human-machine teams in ways that improve team performance and agility.NPS_Cruser, Monterey, CA 93943Outstanding ThesisMajor, United States Marine CorpsMajor, United States Marine CorpsApproved for public release. Distribution is unlimited

    A Sky Island Fire Ecology Primer, with a Focus on Chiricahua National Monument: A Reference Document for the National Park Service

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    Fire is a keystone ecological process in the vegetation of the Sky Islands of Arizona and beyond, affecting every aspect of these ecosystems, including soils, forest structure, species composition, carbon storage, wildlife populations, and much more. For thousands of years, wildfires have been, not a disruptive external force, but an intrinsic part of these natural communities, as integral as water, sunlight, soil, and air. Times have changed. Human-induced fire suppression and climate change have dramatically altered fire regimes across the region, and the fires of the 21st century are a serious problem. Not only are uncharacteristically large and intense fires disrupting ecosystems that historically experienced more frequent, low-intensity wildfire, they are also threatening human communities in the rapidly-growing wildland-urban interface. A key recommendation of the 2007 Statewide Strategy for Restoring Arizona’s Forests was that “The Arizona State Legislature, county and local governments, tribal governments, and state agencies should develop land use policies and practices that support forest restoration, community protection, and fire management efforts.” (Recommendation 2.2, p.9). The goal of this essay is to discuss the landscape role of fire in the Sky Islands of southern Arizona, and in particular Chiricahua National Monument. We will describe fire and vegetation conditions before Euro-American settlement, changes in fire regime and ecosystems wrought over the past 150 years, the accompanying shifts in plant communities, and projections for the future. We will marshal our recent field research, tying our results to specific places in the park, but we will also summarize general principles developed from many decades of ecological research across the Southwest. Our mission is to provide essential fire ecology background for park staff, who enlighten park visitors about the ecologically-rich and regionally-important environments of Chiricahua National Monument (CHIR)
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