1,882 research outputs found
From the ‘freedom of the streets’: a biographical study of culture and social change in the life and work of writer Jack Common (1903-1968)
No full textThe author assesses the life and work of the Newcastle upon Tyne born writer Jack Common in the light of the massive social, economic and cultural changes which have affected the North East of England and wider society through the period of Common's life and afterwards. He seeks to point out the relevance of Common to the present day in terms of his ideas about class, community and the individual and in the light of Common's sense of rebelliousness influenced by a process of grass-roots education and self-improvement. In addition, he draws upon his own extensive experience in community arts and education, looking, in particular, at the work he and others have carried out on Common over the last thirty years and assessing its value in the light of recent political changes. The author draws together the range of biographical and literary criticism carried out by a range of individuals over this period of time and brings into print hitherto unpublished material about Common's life and work by interviewing family members and associates, exploring the Common Archive at Newcastle University and other largely ignored sources, and studying Common's significant association with George Orwell in great detail. Through all of this, he seeks to argue that Common's life and ideas remain worthy of close attention in the present day
An experimental and numerical study on jack-up dynamic behavior
No full textThis paper presents the more salient results of an experimental and numerical study on jack-up dynamic behavior. The laboratory studies of three principle jack-up platform models were carried out in both regular and irregular waves. The data from irregular wave tests were analyzed in both the probability domain and frequency domain supported by a careful error analysis. Computer simulations were carried out in the time domain using a nonlinear, dynamic, multiple degree of freedom software which includes various hydrodynamic interaction options. The experimental results and associated computer simulations demonstrate that nonlinearities are important even with the present simplified model testing and different nonlinearities have different (sometimes compensating) influences on the structure's dynamic behavior. Some more specific results include: (1) The stiffness obtained from static tests can be significantly lower than that inferred from dynamic vibration tests; (2) relative motions from structural compliance are such that they cannot be responsibly neglected in the hydrodynamic computation; and (3) inclusion of the P-O effect in the structural schematization is essential for the jack-up simulations.Offshore TechnologyCivil Engineering and Geoscience
Not by Humans Alone: Environments of Marginal Significance in Late Imperial China and Beyond
No full textThe panel considers the historical significance of human ties with key elements of surrounding environments, particularly terrain and fauna, for a more diversified study of Late Imperial China across its geographic and cultural margins. These elements are analyzed as manifestations of dynamic conditions not fully subject to human control and so require adaptive responses from people. So, Manchu identity depends in part on fulfilling the needs of garrison horses for pasturage in China proper; the ecological dynamics of Yangzi upstream clearance create partly insoluble administrative problems downstream; long distance human commercial caravan traffic linking Burma and China needs mules, who in turn need their muleteers to be more vets than merchants; the Wuling mountains at Guizhou and Huguang help keep indigenous Miao identity free of full Ming imperial authority, weighed down by the dynasty’s “Southern Great Wall.” The discussant will provide further context to show how the products of such relations resonate beyond the Late Imperial period into the twentieth century. Overall, the panel adopts more environmentally inclusive perspectives linking China proper to its borderlands to show how cultural significance is, often inadvertently, realized “not by humans alone.”Jack P Hayes did the Introduction & was a Panel Discussant. Association of Asian Studies Annual Meeting (Spring 2014). Philadelphia, PA
Design and testing of a thick-film dual-modality sensor for composition measurements in heterogeneous mixtures
No full textThe current paper focuses on design and laboratory evaluation of a dual-modality sensor, developed for the needs of oil and gas extraction industry to measure the composition of heterogeneous mixtures in harsh conditions. The sensor combines ultrasonic and electrical measurement techniques, which are non-destructive, rapid and can potentially provide an on-line industrial measurement. Such a ‘dual-modality’ measurement could potentially be reliable in a wider range of process conditions. A distinct feature of the sensors presented here is their construction, which makes use of the thick-film technology, enabling the construction of multi-layered structures of both conductive and non-conductive layers, some of which may exhibit piezoelectric properties for ultrasonic measurement purposes. These are later fired on a ceramic substrate to provide rugged sensors, capable of working in aggressive industrial environments. Laboratory experiments to investigate the feasibility of the dual-modality sensors were conducted and some comparisons with the theoretical predictions are presented
Workability study for going-on-location of jack-up vessels
No full textThis thesis focuses on the going-on-location (GoL) operation of jack-up vessels in the offshore wind energy industry. The GoL process involves the transition of a jack-up vessel from a free-floating state to a state where it’s elevated above the waterline and pinned to the seabed. The workability of these vessels is significantly affected by the impact loads experienced during the GoL process, particularly when interacting with stiff seabeds and non-negligible sea states. In current methodologies, certain parameters like wave height and wave period set the limitations to when GoL process can proceed. For safety reasons, the GoL process is halted if these conditions are exceeded. Instead of solely depending on external factors like wave height an wave period, the focus transitions towards how the vessel dynamics relate to the impact forces it encounters during the GoL. To address this limitation, a comprehensive framework has been developed that combines hydrodynamic, structural, and soil-spudcan interaction elements to evaluate impact forces during the GoL process. The framework offers a flexible and case-specific configuration. It allows for easy modifications, integration, andreplacement of components and input parameters. This case-specific arrangement is advantageous due to the wide range of jack-up vessels and environmental variations. In model implementations adhering to the framework, the jack-up vessel is represented as a multi-body structure, in contrast to the conventional rigid-body representation often employed. Within the multibody approach the spudcans, the legs, and the vessel are described by separate bodies each with its own properties. The primary focus of this research is on the dynamic soil-spudcan interaction process, which has not been extensively covered in existing standards. The soil-spudcan interaction model is to determine the instantaneous force acting on the spudcan as it contacts the seabed during GoL. By integrating elasto-plastic soil behavior into thesoil-spudcan interaction element, the model encompasses descriptions of soil resistance to spudcan penetration and lateral displacement, taking into account memory and potentially stateful characteristics. A simulation model, adhering to the framework, has been developed, integrating hydromechanical, structural,and soil-spudcan interaction submodels within the Orcaflex environment. Three distinct simulation scenarios are examined: an undisturbed vessel (free-floating), a disturbed vessel (full GoL), and a pinned vessel (elevatedjack-up). The disturbed vessel scenario, which includes a full GoL process, has exhibited consistency in both undisturbed vessel simulations, where the vessel is the free-floating stage, and in pinned vessel simulations,where the vessel is in the pinned stage. The impact phase is situated between these two boundary cases, and the framework effectively represents simulation models within its scope. In addition, simulations with varying sea states are performed for regular and irregular sea states. Simulations involving varying regular wave patterns suggest that the maximum downward spudcan velocity (DSV) is a critical parameter influencing the magnitude of impact forces on the spudcans. For irregular waves, the simulations indicate that the maximum impact forces are more closely related to the pinned vessel scenario, asthe maximum impact occurs towards the end of the impact phase.In conclusion, this thesis has effectively described the behavior of jack-up vessels during the impact phase of the GoL process. For any model utilizing the framework, the GoL process can be simulated, and the resultscan be analyzed to assess workability. Furthermore, the study proposes a potential correlation between vessel dynamics and maximal impact forces, a relationship that could potentially guide on-board decision-makingprocesses. The enhanced understanding of the interaction between the spudcan and the seabed, along with the comprehensive framework, contributes to improving the decision-making process for executing the GoLoperation of jack-up vessels in the offshore wind energy industry.Offshore and Dredging Engineerin
sj-pdf-1-ajs-10.1177_03635465211041686 – Supplemental material for Prediction of Hamstring Injuries in Australian Football Using Biceps Femoris Architectural Risk Factors Derived From Soccer
No full textSupplemental material, sj-pdf-1-ajs-10.1177_03635465211041686 for Prediction of Hamstring Injuries in Australian Football Using Biceps Femoris Architectural Risk Factors Derived From Soccer by Connor Lee Dow, Ryan G. Timmins, Joshua D. Ruddy, Morgan D. Williams, Nirav Maniar, Jack T. Hickey, Matthew N. Bourne and David A. Opar in The American Journal of Sports Medicine</p
Input of fully 3D FE soil-structure modelling to the operational analysis of jack-up structures
No full textJack-ups are mobile structures widely employed in the offshore industry as drilling rigs or installation/maintenance vessels (e.g. for offshore wind farms). To assure safety at each location, site-specific assessment is required to predict the performance of the unit during installation and operations. The response of jack-ups to environmental loads is highly affected by the interaction between all footings (spudcans) and the underlying soil, an interaction still challenging to describe under general 3D loading. This work emphasises the potential of 3D continuum simulations to capture non-linear soil-structural interaction in jack-up units. An integrated jack-up–spudcans-soil 3D finite element (FE) model is set up by including strain-hardening soil plasticity and geometrical non-linearity (P−Δ effects). After preliminary calibration of soil parameters, the FE model is successfully validated against literature results, namely obtained through (i) small-scale centrifuge experiments and (ii) numerical simulations based on macroelement foundation modelling. The validated FE model is then used to inspect several implications of soil modelling assumptions, as well as the response of the jack-up to relevant 3D loading combinations. The results presented support 3D continuum modelling as a suitable approach to analyse spudcan fixity and, overall, the operational performance of jack-ups. Despite higher conceptual/computational difficulties, fully 3D simulations can valuably complement the insight from (rare) integrated physical modelling, and contribute to the improvement of soil-spudcan macroelement models.Geo-engineerin
Birmingham News sleeve BN0028413
No full textScribblers / Mrs. Joseph Farley and Mary Lynne / Mrs. John Cox and Shelby / Mrs. Douglas Russen / Mrs. Jack [Connor], Mrs. Reeves / Mrs. Donald Campbell and Susan / Laura LaTona / Mrs. Jack W. [Orcutt] Jr., Jack III and Amy Campbell / Mrs. W. P. Cox Jr. / "Ruffles all around, lace too" / "Mrs. Jack W. Orcutt Jr., Jack III and Amy Campbell" / "Just a small part of her wardrobe" / "Shelby Cox and mother, Mrs. John Cox" / "A total work of art" / "Laura Latona" / [Work order and clipping included
Data for: “Russia: The politics and psychology of overcommitment,” in: The ideology of the offensive: Military decision making and the disasters of 1914
No full textThis is an Active Citation data project. Active Citation is a precursor approach toAnnotation for Transparent Inquiry (ATI). It has now been converted to the ATI format. The assembled project can be viewed at: https://qdr.syr.edu/atipaper/ideology-of-the-offensive
Project Summary
Data for Chapter 7 in "The Ideology of the Offensive: Military Decision Making and the Disasters of 1914" (Cornell University Press, 1984) The book from which this chapter is taken asks why the major European continental powers all began the First World War with offensive military strategies that failed to accomplish their political or military objectives and that helped to cause the war by increasing the insecurity of all these states. The author argues that the offensive bias in 1914 mainly stemmed from the preference of professional military organizations. Offensive strategies and doctrines enhanced their prestige and autonomy by purporting to create decisive military solutions to the paramount political problems of the state. The weakness of civilian oversight of professional militaries before 1914 unleashed this bias. The larger conceptual purpose of the book was to explore how strategists in any era might come to believe that security could be best achieved by destabilizing offensive means, including striking first. Chapters on Germany and France illustrate these main arguments of the book very directly. The Russian case manifests less of a systematic, long-term bias for the offensive. It explores the causes of a shift in Russian military strategy between 1910 and 1914 from a cautious, largely defensive war plan to a highly overcommitted plan for simultaneous offensives on three fronts. Two background factors – the growing strength of the Russian army and the tightening of the Russo-French alliance in response to Germany’s offensive war plan – help to explain the evolution of Russia’s strategy in a more offensive direction, but these considerations do not account for the disastrously overcommitted excesses of this move. The author emphasizes three explanations for the overcommitted offensives: (1) bureaucratic compromises in which different military bureaucratic factions each got the offensive that it wanted, (2) oversimplified decision processes that paid insufficient attention to logistical feasibility, and (3) a psychological bias for seeing the necessary as possible. Chapter 7 on Russia was chosen for active citation because the research for it added considerable information not widely available in the West, and because the footnotes take considerable pains to explain the connection between details of evidence and the arguments of the chapter.
Data Abstract
The evidence for the chapter comprises many primary sources and several Soviet scholars’ archival research. At the time of the data collection (in the 1980s), however, the author was denied access to the Soviet military history archive, which some Western scholars have subsequently been able to exploit in the post-Soviet period. One qualification the author makes concerns the general insufficiency of data in the Russian case at the time of his writing (as compared to the German and French). Although the chronology of the Russian planning process is well documented, the motivations for some of the changes in the war plan are not. The explanations presented in memoirs and published documents tend to be superficial. Soviet historiography had not been particularly incisive, and Western scholars at the time (like Snyder himself) did not have access to archival material on military planning. Consequently, the interpretations of Russian decision making are not definitive. Nonetheless, he considered using evidence from a past but critical period to be the major advantage of using historical rather than contemporary cases to study the sources of bias in strategic policy making, which remain similar in the present despite changes in military technology. FILES DESCRIPTION: The key documents used for citation activation come from published collections of diplomatic materials of WWI and Soviet historiography from the early part of the 20th century. For example, a critical source used on numerous occasions is a 1926 study by Andrei M. Zaionchkovskii, a general and military historian, who commanded the Russian 30th Army Corps during WWI, of the Russian planning for the war. The memoirs of Yuri Danilov, chief of operations of the Russian Imperial Army general-headquarters during the period, serve as another key source of evidence. Additional important sources used contain Soviet army publications of archival maps and plans and studies conducted by Soviet military academies’ scholars. Where possible, the author cites the English-language versions of books (e.g., the reminiscences of Russian foreign minister Sergey Sazonov, published in London in 1928), but many of the source materials are in Russian, German and French, and the author provides translations for many relevant excerpts. The source files are scanned versions of relevant pages cited from close to 80 individual publications.
Logic of Annotation and Activation
The author’s criteria for activating citations were whether the source material had a bearing on key arguments or historical interpretations, and whether the rarity or intrinsic interest of the materials warranted making them more easily accessible to researchers – even in cases where the materials might have played a relatively smaller role in the argument. As in the footnotes of the book itself, the author sometimes included English-language material for general background, even when it was not as directly on point as the Russian sources. Additionally, a few of the original sources used for this research conducted in the mid-1980s could not be tracked down for logistical reasons.</p
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