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1
Ilschner, Frank. "Verkörperte Zeiträume eine Auseinandersetzung mit der Land-Art in den Werken von Andy Goldsworthy, Richard Long und Walter De Maria /." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972778403.
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Ilschner, Frank. "Verkörperte Zeiträume : eine Auseinandersetzung mit der Land Art in den Werken von Andy Goldsworthy, Richard Long und Walter De Maria / Building time : a view on the Land Art of Andy Goldsworthy, Richard Long and Walter De Maria." Gerhard-Mercator-Universitaet Duisburg, 2004. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-09152004-222429/.
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An analytical comparing study of Land Art and its national and international aspects, dealing with Andy Goldsworthy in the first place. Material and Form are not the main subject of the discussion but the language in which the artists show their views on nature. The paper gives a translation of the artists' language and makes it readable. Connections are made between several cultural and social aspects such as religion, spirituality, Zeitgeist, science, art, music, theatre, literature, mass media, sport and nature. Description leads to an analysis of the metaphysical level of Land Art.
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Steidl, Daniela [Verfasser], Manfred [Akademischer Betreuer] Broy, and Andy [Akademischer Betreuer] Zaidman. "Cost-Effective Quality Assurance For Long-Lived Software Using Automated Static Analysis / Daniela Steidl. Betreuer: Manfred Broy. Gutachter: Manfred Broy ; Andy Zaidman." München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1085017516/34.
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Long, Danette Marie. "Shakespeare and the English methods course." Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/long/LongD1210.pdf.
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This paper investigates the perceived lack of performance pedagogy in Shakespeare instruction in the secondary classroom, the role of active performance pedagogy for pre-service teachers when considering Shakespeare instruction in the English methods course, and student reactions to performance requirements in the Shakespeare classroom. Specifically, it argues the need for methods instruction to include actively engaging pre-service teachers in various types of performance pedagogy: tableaux, performing of scenes, choral readings, etc. in their preparation for future Shakespeare instruction at the secondary level. The focus of this paper is therefore threefold: to investigate the nature of the English methods course and how it approaches teacher candidates' Shakespeare instruction, to the benefits of performance-based pedagogy at the secondary level, and finally, student reactions to performance requirements in the Shakespeare classroom. To this end, I followed a mixed methods (Creswell, 2003) approach, blending both quantitative and qualitative data for evaluation. Methods of data collection included instructor surveys, student surveys both pre- and post-performance, student performance reflection papers, student rehearsals and student performances.
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Long, Lauren Christine. "Food security and family well-being." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/long/LongL0507.pdf.
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Cheung, Jeremy. "A Lone Foreigner on the Long March: Otto Braun and the CCP-Comintern Relationship." Scholarship @ Claremont, 2012. http://scholarship.claremont.edu/cmc_theses/349.
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This work is intended to examine the history of the formation and breakdown of Comintern-CCP relations between 1921 and 1939. Achieving such an objective entails an analysis of Braun's experiences in China, with an emphasis on the events leading up to and including the Long March. Of particular interest is the shifting emphasis from political to military strategy as the source of internal conflict within the CCP. By chronicling the political shifts within the Party, the historical events, and the factors that resulted in the Comintern's fall from grace, it is hoped that the reader will come to better understand the role of Otto Braun and the Comintern amidst the chaos of civil war.
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Smith, Tiffany. "The Long Horizon." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7593.
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The idea for my thesis stemmed from a braided essay I wrote for a creative writing class. I didn’t initially plan on expanding my class essay into a memoir, but I have discovered that oftentimes the story finds us rather than the other way around. Using the memoir form allowed me to bridge quite naturally the subjects of grief and landscape by giving me space to reflect on a turbulent period in my life and arrive at some sort of conclusion. While I could see the importance of the natural world in my life, I didn’t realize at first how it helped me work through the grief, depression, and anxiety I experienced after my mother passed away. Writing about that period of my life helped me see the direct connections between landscape and healing. Grief itself can feel circular or like a whirlpool with no escape. Healing, on the other hand, transpires more linearly. For that reason, I decided to use geology as a metaphor to demonstrate how I worked through the emotional landscape of grief toward acceptance and healing after tragedy.
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Zushi, Mihoko. "Long-distance dependencies." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28974.
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This thesis proposes a modification of Chomsky's (1992) theory of locality to deal with restructuring phenomena which allow an apparent violation of the locality condition on certain local processes. Various restructuring phenomena including long-distance NP movement exemplified by long-distance Object Preposing (Chapter 2) and long-distance head movement exemplified by clitic climbing (Chapter 3) are examined cross linguistically. Long-distance anaphora (Chapter 4) are also examined based on the view the locality on various types of anaphor-antecedent relationships follow from the theory of movement.It is argued that the peculiar behavior of restructuring constructions in terms of locality follows from the lexical properties of restructuring verbs that allows a defective Tense to occur in the complement clause. The following effects result: (i) Case checking within the embedded clause becomes impossible; (ii) the defective Tense triggers incorporation of the infinitive verb into the matrix verb. As a result, the embedded element that requires Case is forced to raise into the matrix clause as a last resort operation, hence motivation long-distance movement.
In order to reconcile long-distance movement with the economy principle which requires chain links to be minimal, this thesis refines Chomsky's (1992) theory of locality. The proposed hypothesis claims that the locality condition on certain operations such as NP movement and head movement follows from the economy principle in such a way that an element can move to the closest position in which its morphological requirement can be satisfied. This notion of the shortest movement is further clarified in that the domain in which the shortest movement requirement is satisfied can be extended if there is an appropriate linked chain formed by head movement. The proposed system not only provides principled account for the phenomena of restructuring, but also has some important implications for the notion of economy of derivation.
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Kopinsky, Justin. "Fast long lived renaming." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91086.
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Thesis: S.M. in Computer Science and Engineering, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014.27
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 41-43).
The long-lived renaming problem appears in shared-memory systems where a set of threads need to register and deregister frequently from the computation, while concurrent operations scan the set of currently registered threads. Instances of this problem show up in concurrent implementations of transactional memory, flat combining, thread barriers, and memory reclamation schemes for lock-free data structures. In this thesis, we analyze a randomized solution for long-lived renaming. The algorithmic technique we consider, called the LevelArray, has previously been used for hashing and one-shot (single-use) renaming. Our main contribution is to prove that, in long-lived executions, where processes may register and deregister polynomially many times, the technique guarantees constant steps on average and O(log log n) steps with high probability for registering, unit cost for deregistering, and 0(n) steps for collect queries, where n is an upper bound on the number of processes that may be active at any point in time. We also show that the algorithm has the surprising property that it is self-healing: under reasonable assumptions on the schedule, operations running while the data structure is in a degraded state implicitly help the data structure re-balance itself. This subtle mechanism obviates the need for expensive periodic rebuilding procedures. Our benchmarks validate this approach, showing that, for typical use parameters, the average number of steps a process takes to register is less than two and the worst-case number of steps is bounded by six, even in executions with billions of operations. We contrast this with other randomized implementations, whose worst-case behavior we show to be unreliable, and with deterministic implementations, whose cost is linear in n.
by Justin Kopinsky.
S.M. in Computer Science and Engineering
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Yip, Sze-tsun, and 葉思進. "Yuen Long Town Hall." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31984964.
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Long, Brandy L. "The factors that influence an effective mentor and mentee relationship /." Electronic version (PDF), 2004. http://dl.uncw.edu/etd/2004/longb/brandylong.pdf.
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Bilas, John E. "Developing the Iraqi Army the long fight in the long war /." Quantico, VA : Marine Corps Command and Staff College, 2008. http://handle.dtic.mil/100.2/ADA490820.
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Cieleszky, Kinga. "Long-Distance Intimacy : How Intimacy in Long-Distance Relationships Changes over Erasmus+ Exchange." Thesis, Karlstads universitet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-62806.
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In recent years technology has developed significantly and rapidly become an intricate part of people’s daily life in the globalised world. There is a growing recognition that within intimate relationships, technology usage has many functions which can create both negative and positive impacts on intimacy. Yet research on intimacy in online social relationships is still underdeveloped. This paper maps the literature on long-distance relationships and how its participants use information and communication technologies to overcome the physical detachment. The purpose of this study is to examine whether intimacy changes over Erasmus+ exchange studies in long-distance romantic and parental relationships. Data from an online survey of 100 Erasmus+ exchange students residing in Budapest, Hungary were analysed to see whether the quality of their relationship worsens during the exchange period. Based on the data collected it can be concluded that the majority of respondents does not experience critical decay in neither of their relationships and that preparation for distance communication with ICTs is not strongly connected to preventing a decay in intimacy.
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Miri, Amir Masoud. "Long acoustic cladded buffer rods." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60688.
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Experimental investigations and theoretical considerations of long acoustic cladded buffer rods are presented and theory superiority over uncladded rods is shown. These rods consist of a core and a cladding which are so designed to confine acoustic energy in the core, giving rise to a perfect guidance. Different rods with different core dopant material, concentration and profile were designed and their acoustic performance was studied by ultrasonic pulse-echo experiment. Tapered rods are also introduced. A cladded silica rod of a large diameter is tapered gradually to a rod of a small diameter and gives it the ability to be used where tiny features or openings are dealt with. Novel metalic acoustic rods both cladded and uncladded are presented and a comparison is made between these rods and conventional metal rods. Acoustic lenses are fabricated at the end of a few rods including cladded silica tapered silica and cladded metalic rods and ultrasonic focus and unfocus measurements carried out at 5 and 10MHz are presented for all the rods.Finally, the application of our unique rods at elevated temperatures is discussed. Ultrasonic measurements are performed at medium temperatures (up to 270$ sp circ C$) on a high viscosity liquid and at high temperatures (around 750$ sp circ C$) on molten aluminum. It is shown that our cladded acoustic rods are proper candidates for use at high temperatures to monitor the properties of molten metals specially good for molten aluminum or low melting point temperature (below 1000$ sp circ C$) metals.
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Long, Michael S. "Atmospheric deposition in southeastern North Carolina and its impact on the Cape Fear River estuary /." Electronic version (PDF), 2004. http://dl.uncw.edu/etd/2004/longm/michaellong.pdf.
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Cheng, Wai-lun, and 鄭偉倫. "Yuen Long industrial estate brewery." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31982694.
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Frost, Duncan. "Long range monocular SLAM." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:af38cfa6-fc0a-48ab-b919-63c440ae8774.
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This thesis explores approaches to two problems in the frame-rate computation of a priori unknown 3D scene structure and camera pose using a single camera, or monocular simultaneous localisation and mapping. The thesis reflects two trends in vision in general and structure from motion in particular: (i) the move from directly recovered and towards learnt geometry; and (ii) the sparsification of otherwise dense direct methods. The first contributions mitigate scale drift. Beyond the inevitable accumulation of random error, monocular SLAM accumulates error via the depth/speed scaling ambiguity. Three solutions are investigated. The first detects objects of known class and size using fixed descriptors, and incorporates their measurements in the 3D map. Experiments using databases with ground truth show that metric accuracy can be restored over kilometre distances; and similar gains are made using a hand-held camera. Our second method avoids explicit feature choice, instead employing a deep convolutional neural network to yield depth priors. Relative depths are learnt well, but absolute depths less so, and recourse to database-wide scaling is investigated. The third approach uses a novel trained network to infer speed from imagery. The second part of the thesis develops sparsified direct methods for monocular SLAM. The first contribution is a novel camera tracker operating directly using affine image warping, but on patches around sparse corners. Camera pose is recovered with an accuracy at least equal to the state of the art, while requiring only half the computational time. The second introduces a least squares adjustment to sparsified direct map refinement, again using patches from sparse corners. The accuracy of its 3D structure estimation is compared with that from the widely used method of depth filtering. It is found empirically that the new method's accuracy is often higher than that of its filtering counterpart, but that the method is more troubled by occlusion.
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Kavanagh, Camino. "Information technology and the state : the long view." Thesis, King's College London (University of London), 2017. https://kclpure.kcl.ac.uk/portal/en/theses/information-technology-and-the-state(fd70c689-9f17-4469-bbff-d116874c1170).html.
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This dissertation is concerned with the historic relationship between information technologies and the state. It seeks to demonstrate continuity in the way information technology has privileged rather than diminished sovereignty, notably how governments have a consistency sought to control and exploit information technology as a means to enhance state power. Commencing with the optical telegraph in the late eighteenth century, it uses the lens of five strategic infection points in the history of information technology development to examine the context within which the technologies emerged, their subsequent dispersion and the strategic and geopolitical considerations shaping patterns of state behaviour around the technologies, assessing these against the backdrop of shifts in international order. The case studies establish that the dual-use nature of information technologies, the presumption of power attributed to information itself and the effects of the technologies can be tailored to produce, have consistently accentuated the role of the state, and its will to compete a constant throughout history, regardless of the nature of international order and the legitimating principles underpinning it. Importantly, the study also demonstrates that tensions provoked by the interplay of strategic interests, geopolitics and the technologies have generally been accommodated within the existing international system, which, for many states, continues to reflect the Westphalian world of borders. Such arrangements- imperfect as they are- have consistently helped attenuate competing unilateral and collective interests, the consequences of which are evidence in today's extensive IT -related regime complex,the seeds of which were sown in the late eighteenth century.
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Erdozain, Jack Jr. "Long wave infrared structured light." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/121664.
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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 69-72).
3D sensing technologies have been exploited for many applications in autonomous vehicles, manufacturing, and consumer products, however, existing techniques may suer in challenging conditions, where scattering due to fog, dust, or smoke is present. While light in the visible and near IR spectrum are heavily affected by by common scattering mediums, long-wave infrared (also known as thermal IR) experiences less scattering, especially when scattering particles are small. This thesis proposes and demonstrates a structured light scanning approach which operates in the long-wave IR Spectrum. We believe that structured light technique with long-wave IR leads to more robust 3D sensing in some challenging environments. In this thesis the conceptual framework behind the technology is presented, the technology is demonstrated, and testing of long-wave infrared projection is compared to the visible spectrum.
by Jack Erdozain Jr.
M. Eng.
M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
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Gupta, Neha S. M. Massachusetts Institute of Technology. "Learning to reformulate long queries." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/60164.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.Includes bibliographical references (p. 82-86).
Long search queries are useful because they let the users specify their search criteria in more detail. However, the user often receives poor results in response to the long queries from today's Information Retrieval systems. For the document to be returned as a relevant result, the system requires every query term to appear in the document. This makes the search task especially challenging for those users who lack the domain knowledge or have limited search experience. They face the difficulty of selecting the exact keywords to carry out their search. The goal of our research is to help bridge that gap so that the search engine can help novice users formulate queries in a vocabulary that appears in the index of the relevant documents. We present a machine learning approach to automatically summarize long search queries, using word specific features that capture the discriminative ability of particular words for a search task. Instead of using hand-labeled training data, we automatically evaluate a search query using a query score specific to the task. We evaluate our approach using the task of searching for related academic articles.
by Neha Gupta.
S.M.
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Alexander, Joseph V. "Long Term Blood Oxygenation Membranes." UKnowledge, 2015. http://uknowledge.uky.edu/cbme_etds/28.
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Hollow fiber membranes are widely used in blood oxygenators to remove carbon dioxide and add oxygen during cardiopulmonary bypass operations. These devices are now widely used off-label by physicians to perform extracorporeal blood oxygenation for patients with lung failure. Unfortunately, the hollow fiber membranes used in these devices fail prematurely due to blood plasma leakage and gas emboli formation.
This project formed ultrathin (~100nm) polymer coatings on polymer hollow fiber membranes. The coatings were intended to “block” existing pores on the exterior surfaces while permitting high gas fluxes. This coating is synthesized using surface imitated control radical polymerization.
The coating was durable and did not peel or degrade. Fibers modified using this coating technique did not substantially degrade the mechanical properties of the membrane. This coating technique prevented blood plasma leakage and gas emboli formation. The coating permitted blood oxygenation and carbon dioxide removal from in a mock circulation module.
Coating formation on polymeric hollow fiber membranes using surface initiated controlled radical polymerization allows for the formation of membranes that have the potential for long term blood oxygenation. This coating technique would allow these long term blood membranes to be produced more inexpensively than currently existing membranes used for long term use.
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Kwok, Fung-shan Marian, and 郭鳳珊. "Town hall for Yuen Long." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B3198339X.
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Vemuri, Sunil 1969. "Personal long-term memory aids." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/30242.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, February 2005.MIT Institute Archives Copy: p. 101-132 bound in reverse order.
Includes bibliographical references (p. 126-132).
The prevalence and affordability of personal and environmental recording apparatuses are leading to increased documentation of our daily lives. This trend is bound to continue and it follows that academic, industry, and government groups are showing an increased interest in such endeavors for various purposes. In the present case, I assert that such documentation can be used to help remedy common memory problems. Assuming a long-term personal archive exists, when confronted with a memory problem, one faces a new challenge, that of finding relevant memory triggers. This dissertation examines the use of information-retrieval technologies on long-term archives of personal experiences towards remedying certain types of long-term forgetting. The approach focuses on capturing audio for the content. Research on Spoken Document Retrieval examines the pitfalls of information-retrieval techniques on error-prone speech- recognizer-generated transcripts and these challenges carry over to the present task. However, "memory retrieval" can benefit from the person's familiarity of the recorded data and the context in which it was recorded to help guide their effort. To study this, I constructed memory-retrieval tools designed to leverage a person's familiarity of their past to optimize their search task. To evaluate the utility of these towards solving long-term memory problems, I (1) recorded public events and evaluated witnesses' memory-retrieval approaches using these tools; and (2) conducted a longer- term memory-retrieval study based on recordings of several years of my personal and research-related conversations. Subjects succeeded with memory-retrieval tasks in both studies, typically finding answers within minutes.
(cont.) This is far less time than the alternate of re-listening to hours of recordings. Subjects' memories of the past events, in particular their ability to narrow the window of time in which past events occurred, improved their ability to find answers. In addition to results from the memory-retrieval studies, I present a technique called "speed listening." By using a transcript (even one with many errors), it allows people to reduce listening time while maintaining comprehension. Finally, I report on my experiences recording events in my life over 2.5 years.
by Sunil Vemuri.
Ph.D.
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Glover, Joseph. "Titanic Forces : Trauma, Eros and the Death Drive in Sebastian Barry’s A Long Long Way." Thesis, Högskolan Dalarna, Engelska, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:du-29828.
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Lau, Ling-yee Liny, and 劉令始. "Wind and water of two villages : investigating a possible connection between fungshui and prosperity of two villages in Ping Shan : the case of Hang Tau Tsuen and Hang Mei Tsuen." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/208064.
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As someone who have studied Fungshui and offers Fungshui advice, I am aware that the collective success of a village is often qualified, traditionally, by the number of wealthy landlords, accomplished scholars, illustrious officials, male offspring, and long-life people. In modern times, the attribution to good Fungshui in a village is similar: by the number of rich businessmen and landowners, accomplished professionals, high-ranking government officials and high-profile celebrities. The emphasis is still on men, even though there are more clanswomen and many successful clanswomen. Based on this notion of attributing the success of clansmen to good Fungshui, I wonder if this could provide a means of measuring how “good” is good Fungshui of a village.
The Tang clan is one of the five great clans (i.e. Tang, Hau (侯), Pang (彭), Liu (廖) and Man (文)) residing in Hong Kong. Since the migration and settlement of the family to Ping Shan in the 12th Century by the 92nd generation ancestor Tang Yuen-ching (鄧元禎) with his son Tang Chung-kwong (alias Tang Man-lei) (鄧從光, 字萬里), the Tang clan of Ping Shan has been evolved for more than 800 years with a long period of economic prosperity and social achievements. Many villagers in Ping Shan attribute this success to good Fungshui in and around the villages. In what ways does Fungshui contribute to the economic and social success in villages in Ping Shan? How can this seemingly unmeasurable Fungshui qualification of success in Ping Shan be measured in more concrete terms? These are the research questions for this dissertation.
This is an investigative research into the land and the people of villages in Ping Shan, with focus on tracing notable clansmen from past to present as a measure of the reputed good Fungshui of the land.
It is with my interest in heritage and my lifelong dedication to the understanding of Fungshui that I attempt this unconventional research in making a connection between two pedagogies – the intangible cultural heritage of Fungshui and the cultural landscape of Ping Shan. The place Ping Shan, after all, is where I grew up, and this is a place to which I have strong emotional attachment. As such, I feel obligated to find out more about Ping Shan. I did not know the outcome of the research, and my expectation was that even if I did not find the connection, I would at least find out more about the history of the people and the geography of the place and contribute towards the understanding of the cultural landscape of two villages in Ping Shan.published_or_final_version
Conservation
Master
Master of Science in Conservation
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Zhang, Xi M. Eng Massachusetts Institute of Technology. "Wind effect on long span bridge." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74418.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 41-42).
This thesis has studied different types of reactions of long span bridge under wind load, such as vortex shedding, flutter and buffeting. Since all of these conditions have the chance to damage bridge structure, we calculate the particular wind speed and magnitude that will maximize the reaction. To check if the theory works well, a bridge model is set up and analyzed in SAP2000 and the results are compared with one from mechanics theory. A cable-stayed bridge from Hong Kong is selected for analysis. After we compare the bridge reaction by different methods, we find that theory of aerodynamics can provide reasonable result. However, we're still looking for a better performance from the bridge and improved motion control. Thus, to optimize the structure, design of a tuned mass damper is included as well. Summarily, wind effect on long span bridge is predictable and could be well controlled by various means based on the analysis in this thesis.
by Xi Zhang.
M.Eng.
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Yadav, Priti. "Modelling loading and growth of long bones Modelling loading and growth of long bones." Licentiate thesis, KTH, Biomekanik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-177913.
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The long bones grow by the process of endochondral ossification, which occurs at the growth plate. This process is regulated by biological factors and mechanical factors. The biological factors which contribute to endochondral ossification process are genes, hormones, nutrients etc. The mechanical factor is the load acting on the bone. The major forces on the bone are due to joint contact load and muscle forces, which induce stresses in the bone. Carter and Wong proposed in a theory that cyclic or intermittent octahedral shear stress promotes the bone growth and cyclic or intermittent hydrostatic compressive stress inhibits the bone growth. Previously this theory has been used to predict the morphological development of long bones, but with studies using simplified femur and growth plate models. Furthermore, the Carter and Wong theory has a limitation that it does not intrinsically incorporate the resulting growth direction.In the first study, the importance of a subject-specific growth plate over a simplified growth plate has been studied, and growth has been simulated using two different growth direction models: Femoral neck shaft deformation direction and minimum shear stress direction. This study favors the minimum shear stress growth direction model, as it is less sensitive to applied boundary condition than the femoral neck shaft deformation direction model.The second study aims to understand how different muscle groups affect the bone growth tendency. Subject-specific femur and growth plate models of able-bodied children were used. The muscle forces and associated hip contact force from specific muscle groups were applied, and neck shaft angle and femoral anteversion growth tendencies were predicted. This study indicated a tendency for reduction of neck shaft angle and femoral anteversion. Hip abductor muscle forces contribute most, and hip adductor muscle forces least, to bone growth rate.Accurate prediction of bone growth tendency and knowledge of the influence of different muscle groups on bone growth tendency may help in better treatment planning for children at risk of developing bone deformity problems.QC 20151201
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Cantrell, Kinsey M. "cycles for a long now." Miami University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=miami1529580835227467.
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Buchanan, Lauren J. "The Success of Long-Short Equity Strategies versus Traditional Equity Strategies & Market Returns." Scholarship @ Claremont, 2011. http://scholarship.claremont.edu/cmc_theses/286.
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This study examines the performance of long-short equity trading strategies from January 1990 to December 2010. This study combines two financial screens that will yield candidates for both long and short positions for each month during the aforementioned time period. Two long-short strategies are tested: (1) perfectly-hedged, or equal allocation to long and short positions, and (2) net-long. The results of this thesis reveal that if a long-short equity manager is able to successfully determine what companies are overvalued and undervalued and actively rebalance their portfolio, perfectly-hedged and net-long strategies can generate superior risk-adjusted alpha.
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May, William H. IV. "Long Walk in Flight School." VCU Scholars Compass, 2005. http://scholarscompass.vcu.edu/etd/1454.
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Long Walk in Flight School is a document intended to complement a body of artwork that includes photographs, giclee prints, animation, and a twenty two page book of images. The main focus of the text is to discuss two types of exchange; my energy with tools in exchange for an object or event, which is then exchanged in the imagination of the audience for something else, a hybrid thing. These exchanges are part of the performance or presentation of the work. Beginning with a brief description of intent at the start of graduate school, it traces my development as an artist over a two year period, highlighting shifts in my thinking and activity during that time. Finally, it describes my thesis artwork as a set of potential narratives that are conceptually related but visually diverse.
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Brooks, Helen. "Patient perceptions, experiences and expectations of recovery and prognosis in long-term conditions." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/patient-perceptions-experiences-and-expectations-of-recovery-and-prognosis-in-longterm-conditions(ffd083bc-ad64-4fc3-9d22-9050aef29cb4).html.
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Background: Whilst the experience of chronic physical conditions is well documented and has been recognised as relevant for health policy and practice little is known about notions of recovery and prognosis from the point of view of those with long-term physical health conditions. The extent to which people consider the future outcomes of their conditions is relevant to health policy which seeks to engage people in shared decision making, care plans, and self-management. This gap in knowledge about lay perceptions of recovery and prognosis becomes more pronounced when compared with literature from the mental health field in which recovery is one of the dominant foci, is comparatively well researched and in recent years has fed into policy and management approaches.Aims: The aim of the thesis is to explore perceptions of recovery and prognosis with people with long-term physical health conditions and to compare these with perspectives on recovery and prognosis apparent in the mental health field.Methodology: Using qualitative methods, a two phased approach to data collection and analysis was undertaken. Phase 1 used secondary data analysis with two existing datasets to examine whether notions of recovery and prognosis were implicit in narratives about the experience of illness. Phase 2 built on the findings from phase 1 and utilised longitudinal, primary data collection in the form of narrative interviews undertaken at two time points (baseline and 12 month follow-up). The analysis in both phases involved a cross case thematic analysis to look for commonalities and differences across individuals. Data from phase 2 were also subject to a narrative emplotment of individual stories which were used to capture the longitudinal changes in patient perspectives over time.Results: There were similarities with findings from the mental health field (recovery as a complex, nonlinear journey, the input from friends and family, notions of burden and the impact of condition on sense of self). However, there were nuanced differences in relation to physical health conditions which related to expectations about mortality, the experience of time, the extent to which narratives were future oriented and the experience of stigma. The dual focus on mental and physical health recovery proved useful for understanding those experiences of multiple morbidities. The results were used to develop a model of recovery narratives based on two dimensions (expectations and responsibility) which gave rise to four typologies of narratives. The aim of this model was to further highlight and summarise the themes arising from the data analysis.Discussion: The results of this study highlight the importance of understanding notions of recovery and prognosis in order to better understand the experience of illness and self-management. The thesis challenges the blanket use of health promotion strategies for those with and without chronic health conditions and supports a shift in policy focus from improved choice and autonomy to what Mol (2009) refers to as ‘enhanced care’.
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White, Michael Jon. "Long-chain fatty acid incorporation into, and long-chain alcohol production by, yeasts." Thesis, University of Bath, 1987. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760562.
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Olson, Julius, and Emma Södergren. "Long Term Memory in Conversational Robots." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260316.
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This study discusses an implementation of a long term memory in the robot Furhat. The idea was to find a way to prevent identical and very similar questions from being asked several times and to store the information of which questions have already been asked in a document database. The project encompasses tf-idf, as well as a small-scale test with Word2Vec, to find a vector representation of all questions from Furhat’s database and then clustering these questions with the k-means method. The tests resulted in high scores on all the evaluation metrics used, which is promising for implementation into the actual Furhat robot, as well as further research on similar implementations of long term memory functions in chatbots.I denna rapport behandlas implementeringen av ett långtidsminne i roboten Furhat. Idén bakom detta minne var att hindra roboten från att vara repetitiv och ställa allt för likartade eller identiska frågor till en konversationspartner. Projektet inkluderar användandet av tf-idf, samt inledande försök med word2vec i skapandet av vektorrepresentationer av dialogsystemets frågor, samt klustring av dessa representationer med algoritmen k-means. De genomförda testerna renderade goda resultat, vilket är lovande för implementering av en liknande mekanism i Furhats dialogsystem samt för framtida forskning inom långtidsminnesfunktionalitet i chatbots i allmänhet.
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Davies, John. "The synthesis and characterisation of long-chain fatty acids." Thesis, University of South Wales, 1987. https://pure.southwales.ac.uk/en/studentthesis/the-synthesis-and-characterisation-of-longchain-fatty-acids(e4850400-9e3e-4f53-af6a-873cd09a0ace).html.
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The commercial hydrogenation of oils and fats results in the formation of, among other components, geometrical and positional isomers of monounsaturated fatty acids. The view that there may be hazards associated with such oils have occasionally been expressed. Prior to an investigation of the levels of such acids in human tissue and UK dietary fats, the synthesis of a series of these acids, as standards, and their characterisation, was necessary. For the synthetic programme, the general scheme provided a convenient route for the synthesis of geometrical and positional isomers from common precursors. When condensation of the 1-alkyne and a-chloro-w-iodoalkane was performed via sodamide in liquid ammonia, the scheme was limited but was extended somewhat when performed via methyllithium in dioxan. Generally, yields decreased with the increasing chain length, and migration of the unsaturated bond to the extremities of the resulting molecule. Chromatographic separation, both capillary column GLC and reversephase HPLC, was readily achieved on the basis of chain length and configuration of the double bond. Furthermore, the partial separation of positional isomers was achieved. NMR spectroscopy unambiguously determined the configuration and position of unsaturation in virtually every fatty acid. Assignment is based on the fact that functional groups within an acid alter the chemical shift of neighbouring carbons in a characteristic manner. No one of these techniques alone is applicable to the determination of positional isomerism in a complex lipid mixture and must be used in combination. Whereas NMR is undoubtedly invaluable in the quantification of positional isomers on an individual basis, or in profiling simple mixtures, it is not as applicable to the direct analysis of complex lipid samples. Emphasis on the continuing development of capillary column GLC holds the most promise for the direct quantification of positional isomerism.
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Giblin, lain. "Agreement restrictions in Mandarin long-distance binding." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/103498.
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Thesis: Ph. D. in Linguistics, Massachusetts Institute of Technology, Department of Linguistics and Philosophy, February 2016.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 249-259).
This thesis investigates the distribution of the Mandarin reflexive ziji. Ziji displays many interesting properties but its long-distance binding distribution has long been of interest to linguists. Ziji displays a blocking effect such that certain arrangements of person features prohibit long-distance binding. In this thesis I argue that the blocking effect pattern is the well-attested Person-Case Constraint (PCC). I argue that ziji is a SE anaphor that is syntactically bound through the agreement system and that the PCC blocking effect emerges when intervention effects disrupt the agreement system that mediates the binding relationship between an anaphor and its antecedent. The conditions required for the syntactic binding of ziji can be explained in terms of an interaction between three processes. First, there is a condition on how the [phi]- features on CO can be valued. C0 bears a [+participant] feature, which it seeks to value subject to CONTIGUOUS AGREE (Nevins, 2007). Second, there is a process of inheritance of the [phi]-features on C0 by all lower instances of TO, following and extending Chomsky (2005, 2008). Finally, there is a condition on the relation between the [phi]-features borne by a particular instance of T and those of its specifier, inspired by Bejar and Rezac's (2009) condition of Match. Because Mandarin T bears no overt agreement morphology, the [phi]-features inherited by T need not correspond to the [phi]-features of its specifier. However, when ziji is not syntactically bound as a SE anaphor it displays a different distribution and it can be used as a SELF anaphor and as a logophoric pronominal.
by lain Giblin.
Ph. D. in Linguistics
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Tse, Wing-wah, and 謝穎華. "Roles and functions of sustainability indicators in river revitalization : a case study of Yuen Long Town Nullah." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/207624.
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Sustainable development has been an emerging trend in worldwide projects for securing the assets available to future generations, yet, there are often disputes over the sustainability of a project. Sustainability indicators are therefore suggested to serve as a quantitative tool to analyze the changes and measure progress of a sustainable development. By engaging the public for identification of such indicators, their opinions of a development can be documented and then conveyed to the decision makers at the planning stage. It is anticipated that the actual needs of the local communities can be reflected in and communicated by these sustainability indicators.
In this Study, Yuen Long Town Nullah was picked to be a pilot study to demonstrate the role and function of sustainability indicators. It is a part of the oldest drainage systems in Hong Kong and was constructed in the early 1960’s to alleviate flooding. Like many other nullahs, it was originated from natural watercourses and has then been straightened and provided with concrete bed and walls. Over the years, it has been complained of eyesore problem, foul smell, and accumulation of refuse. In order to address these urban problems in parallel with the lack of open space, revitalization of the Nullah has been opted for re-establishing riverscapes and providing valuable recreational space by turning the Nullah into community assets.
In total, 202 sets of questionnaires were collected for gathering the general perception and identification of local sustainability indicators of Yuen Long Town Nullah. 4 interviews with various stakeholders were also conducted for giving comments on sustainability indicators, government’s policy towards sustainable development, recommendations on monitoring the sustainability progress and the sustainability indicators for developing Yuen Long Town Nullah based on their experiences. In general, the local communities concerned the environmental aspect the most but economic aspect the least. A sustainability indicator framework was proposed at the last part of this Study to conclude the findings from the questionnaire survey and the interviews.published_or_final_version
Environmental Management
Master
Master of Science in Environmental Management
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del, Busto Cristina T. "Cognitive Beharioal-Therapy for Child Anxiety: Long-term Follow-up and Predictors of Long-term Outcomes." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/3034.
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Anxiety and its disorders are highly prevalent in childhood and adolescence, and are associated with impairment in social and academic functioning. Empirical evidence has accumulated demonstrating the efficacy of cognitive-behavioral therapy (CBT) for youth anxiety disorders delivered in individual, group, and parent formats. This dissertation study compared two of these formats, a youth only individual format, and two types of parental involvement formats to answer questions related to the long-term diagnostic outcomes and psychosocial functioning outcomes of youth who receive CBT for anxiety disorders. Specifically, this dissertation sought to compare individual and parent involvement to determine whether targeting parenting behaviors associated with youth anxiety produces significantly lower levels of psychopathology at a follow-up evaluation.The sample consisted of 173 youth and their parents who completed a follow-up evaluation one to seven years following treatment for youth anxiety disorders. Research questions were examined using regression analyses within a structural equation modeling framework. Results indicate that youth who demonstrated positive treatment gains at post treatment continued to maintain these gains at the long-term follow-up period one to seven years following treatment. Treatment condition significantly predicted ratings of youth anxiety symptoms at follow-up according to parent ratings, indicating lower youth anxiety symptom ratings for participants in the parent-involved conditions compared to participants in the youth only condition. Youth in the parent-involved conditions were also rated higher on social functioning at follow-up on the parent report, as compared to youth in the individual treatment condition. The study findings are discussed in terms of treatment design and clinical implications for the treatment of youth anxiety and its disorders.
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Andersson, Michael K. "On testing and forecasting in fractionally integrated time series models." Doctoral thesis, Stockholm : Economic Research Institute, Stockholm School of Economics [Ekonomiska forskningsinstitutet vid Handelshögsk.] (EFI), 1998. http://www.hhs.se/efi/summary/467.htm.
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Pinzone, Judy Ann DeCandis. "A study of the principles and procedures used in creating the Long Island Arts Museum for Students /." Access Digital Full Text version, 1987. http://pocketknowledge.tc.columbia.edu/home.php/bybib/10734557.
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Thesis (Ed. D.)--Teachers College, Columbia University, 1987.Typescript; issued also on microfilm. Sponsor: William J. Mahoney. Dissertation Committee: David W. Baker. Bibliography: leaves 131-138.
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Engreitz, Jesse M. (Jesse Michael). "Genome regulation by long noncoding RNAs." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104616.
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Thesis: Ph. D. in Bioinformatics and Integrative Genomics, Harvard-MIT Program in Health Sciences and Technology, 2016.Cataloged from PDF version of thesis.
Includes bibliographical references.
Our genomes encode the molecular information that gives rise to life, yet we are just beginning to unravel how this information is organized, interpreted, and regulated. While the human genome contains -20,000 protein-coding genes, mammalian genomes also produce thousands of long non-coding RNAs (lncRNAs), some of which are now known to play essential roles in diverse biological processes including cellular differentiation and human disease. Recent studies show that many lncRNAs localize to the nucleus and interact with chromatin regulatory complexes, suggesting that some lncRNAs may represent a crucial missing component in our understanding of genome regulation. To test whether lncRNAs localize to and regulate specific sites in the genome, we developed genome-wide approaches to map lncRNA interactions with chromatin. Through studies of three conserved lncRNAs, we demonstrate that lncRNAs can exploit the three-dimensional architecture of the genome to identify their regulatory targets and, in turn, actively manipulate genome architecture to form subcompartments containing co-regulated genes. Thus, lncRNAs have unique capabilities as dynamic regulators that can locally amplify epigenetic signals. We next explored whether this model might apply to other long noncoding RNAs, many of which are not conserved across species and thus whose functions remain unclear. Through genetic dissection of their local regulatory functions, we show that many of these genomic loci participate in the local regulation of gene expression, but that these functions do not involve the IncRNA transcripts themselves. Instead, multiple mechanisms associated with RNA production including their promoters, the process of transcription, and RNA splicing - act in local networks of regulatory connections between spatially proximal genes, both protein-coding and noncoding. These findings reveal novel mechanistic explanations for the functions and evolution of noncoding transcription in mammalian genomes. Together these studies suggest a model in which mammalian gene regulation is organized into local neighborhoods defined by the spatial architecture of the genome. Within these neighborhoods, lncRNAs and DNA regulatory elements may function cooperatively to coordinate local gene expression. Dissecting this fundamental model for genome regulation may enable manipulation of the processes that interpret our genome sequence and galvanize efforts to develop new treatments for human disease.
by Jesse M. Engreitz.
Ph. D. in Bioinformatics and Integrative Genomics
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Canesin, Lucas Eduardo Costa 1988. "Identificação e caracterização de lncRNAs e genes codificadores linhagem-específicos em Andropogoneae = padrões comuns de evolução de genes emergentes = Identification and characterization lncRNAs and lineage specific coding genes in Andropogoneae : common patterns of evolution of emerging genes." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/317251.
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Orientador: Renato Vicentini dos SantosDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia
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Resumo: Recentemente, a análise de dados de genômica comparativa, buscando elucidar melhor a hipótese nula de modelos evolutivos, i.e. evolução neutra, originou uma nova teoria que eleva o tamanho populacional como principal fator evolutivo. Populações pequenas estão sujeitas a forte influência de deriva genética, o que causa o aumento da entropia do genoma. A complexidade genômica, leia-se conteúdo de sequencias informativas, como genes, é então um subproduto do aumento da entropia e a seleção teria então um papel secundário, sobretudo como moduladora do processo evolutivo. Assumindo este modelo, a emergência e degeneração de transcritos linhagem-específicos estão submetidas primariamente a evolução neutra. A transcrição pervasiva, sobretudo em linhagens germinais, é o agente causal do nascimento de genes e a fixação destes, frente ao reduzido tamanho populacional de eucariotos multicelulares, como as plantas Saccarum officinarum e Sorghum bicolor, ocorre por deriva genética. A inserção de novos genes, que são inicialmente neutros ou levemente deletérios, em redes funcionais ainda é pouco compreendida. A integração se torna gradativamente mais robusta com a evolução individual destes loci. Neste contexto, este estudo buscou identificar genes codificadores e não-codificadores de proteínas de recente emergência em cana-de-açúcar e sorgo a fim de se elucidar a hipótese de que sua arquitetura gênica e integração em redes biológicas apresentam padrões evolutivos comuns. Para isso, realizamos a identificação de lncRNAs de cana a partir de bancos de cDNA, o que permitiu a caracterização da expressão desses transcritos contrastando seis variedades distintas. Em decorrência da disponibilidade do genoma de sorgo, a identificação de genes linhagem-específicos codificadores e não codificadores pode ser resolvida com maior precisão. Pudemos determinar uma correlação entre a sua arquitetura gênica e integração nas redes biológicas e sua idade relativa. Apesar da correlação encontrada, o efeito mais forte observado em transcritos não codificadores revelam outros fatores que devem estar influenciando sua evolução. Levantamos a hipótese de que o evento de tradução possa elevar a eficiência da seleção negativa sobre o transcrito emergente, o que resultaria no turnover mais acentuado de lincRNAs e maior conservação de genes linhagem-específicos
Abstract: Recently, comparative genomics studies, aiming to better elucidate the null hypothesis of models of evolution, i. e. the neutral evolution, originate a new theory that elects the population size as the main factor acting in evolution. Small populations are subject to stronger influence of genetic drift, which raises genomic entropy. Genomic complexity, which means the information content in genome, such as genes, is a byproduct of the high entropy levels and selection would then display a secondary role, mainly as a modulator of the evolutionary process. Assuming this model, the emergence and degeneration of lineage-specific transcripts are primarily subject to neutral evolution. The pervasive transcription, especially in germinal cell lines, is the causal agent of birth of genes and their fixation, in face to the reduced population size of multicellular eukaryotes, as Saccarum officinarum and Sorghum bicolor plant species, is ruled by genetic drift. The integration of new genes, initially neutral or weakly deleterious, in functional networks is still poorly understood. The integration becomes more robust with the individual historical evolutionary path of these loci. In this context, this study aimed identify protein coding and noncoding genes of recent emergence in in sugarcane and sorghum to elucidate the hypothesis that the gene architecture and integration in biological networks display common patterns of evolution. We then identified sugarcane lncRNAs from public cDNA databases that allowed us to characterize the expression of these transcripts in six different contrasting varieties of sugarcane. As sorghum bicolor genome is available, the identification of lineage-specific coding and noncoding could be done to a higher resolution. We could then determine a correlation between gene architecture and network integration with its relative age. Despite the correlation observed, a stronger effect seen in noncoding transcripts reveals other factors that may be influencing their evolution. We propose the hypothesis that the translation event may increase negative selection efficiency over the emerging transcript, what would result in the stronger turnover of lincRNAs and higher conservation levels of coding lineage-specific genes
Mestrado
Bioinformatica
Mestre em Genética e Biologia Molecular
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Fischer, Miriam. "Evolution of the fossil hydrothermal system at Long Valley Exploratory Well, Mammoth Lakes, California, USA the record of open fracture mineralization at 2600 m depth and numerical simulations /." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=970060289.
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Dragomir, Diana. "Characterising the orbits of long period exoplanets." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21929.
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To date nearly 300 exoplanets have been discovered, most of them through measurements of the wobble induced by the planet in the motion of its host star. We have developed a program, based on Bayesian inference, to fit eccentric Keplerian orbits to exoplanet radial velocity data. The data consist of optical spectra obtained using the HIRES echelle spectrometer on the Keck I telescope. We have applied the program to 58 sets of measurements. We have obtained probability distributions for the orbital period and eccentricity for each set. We have found that clear upper and lower limits can be placed on the period while the eccentricity proves more difficult to constrain. From the average period probability distribution we prepared, we preliminarily concluded that there is a much higher probability to find exoplanets with periods below 10000 days than with periods above 10000 days. We also suspect the existence of a correlation between the period and the eccentricity, as well as that of a possible trend of decreasing period with increasing stellar metallicity.À date presque 300 exoplanètes ont été découvertes, la plupart à travers des mesures du vacillement provoqué par la planète dans le mouvement de son étoile mère. Nous avons mis au point un programme, basé sur l'inférence bayésienne, pour modéliser des données de vélocité radiale pour la recherche d'exoplanètes par des orbites excentriques képlériennes. Les données sont des spectres optiques et ont été recueillies avec le spectromètre échelle HIRES au télescope Keck I. Nous avons utilisé le programme pour analyser 58 ensembles de données. Nous avons obtenu des distributions de probabilité pour la période orbitale ainsi que pour l'excentricité pour chaque ensemble. Nous avons trouvé qu'il est possible de placer des limites supérieures et inférieures sur la période, mais que l'excentricité est plus difficile à contraindre. À partir de la moyenne des distributions de probabilité que nous avons obtenu pour la période, nous avons préliminairement conclu qu'il y a une beaucoup plus grande probabilité de trouver des exoplanètes avec des périodes inférieures à 10000 jours qu'avec des périodes supérieures à 10000 jours. Nous suspectons la présence d'une corrélation entre la période et l'excentricité, ainsi qu'une possible tendance de la période à décroître à mesure que la métallicité stellaire augmente.
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Shimizu, Hikaru. "Recent technology developments for long-span bridges." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10395.
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Scotti, Andrea 1978. "Long term behavior of cable strayed bridges." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/29408.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2004.Includes bibliographical references (leaf 46).
In the design of a structure, one of the most difficult parameter to assess is how the initial condition of a structure will change with time. During its life span, a structure can be subjected to different loads, changes in geometric configuration and even changes in its mechanical properties. Among all factors that can affect the geometrical reconfiguration of a structure (i.e. settlements and overloads) creep is one of the most important given its inevitability and because of its persistent effects (normally estimated as ten thousand days). Due to the effect of creep, a structure tends to amplify its deformation under a given load condition over time, and the final deformation can even reach values five or six time grater than the initial ones. During the design, the fact that deformations grow with time can be a difficult condition especially for highly indeterminate structures like cable stayed bridges where the stresses are related to the geometric configuration of the structure itself. In concrete cable stayed bridges, in fact, the increase in the deformation of the deck and the pylons over time leads to a decrease in the initial tension in the stays with an obvious difficulty in the design phase of the structure. The first chapter of this thesis illustrates and explains one approximate method used to estimate the effect of creep on a concrete structure. The method proposed in this thesis is the "Age-Adjusted Effective Modulus Method". It was chosen among others because it is one of the most commonly used, and because it is highly accessible.
(cont.) In the second chapter, the Age-Adjusted Effective Modulus Method will be used in conjunction with the force method to study non homogeneous, indeterminate structure under the effect of creep. In this chapter a procedure will be introduced that enables the calculation of an initial value of the prestressing force in the stays that elides the effect of creep on tension. Bridge in Maine, USA (M.Eng Project. Alexander Otenti, Andrea Scotti, Richard Unruh III, 2004). The theory exposed in this thesis is a very powerful procedure that permits to simplification of the problem of creep in cable-stayed bridges, with easy calculations and with an iterative procedure.
by Andrea Scotti.
M.Eng.
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Shultz, Nicholas A. (Nicholas Andrew). "Motion control of long span horizontal structures." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/34586.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2006.Includes bibliographical references (leaves 55-57).
Traditional approaches to structural design presuppose strength to be the dominant design requirement. But following new technologies and design methods, this assumption that strength requirements dominate is being challenged. In the design of horizontal structures, such as floor systems and pedestrian bridges, increasing lengths of column-free span and demands for material efficiency have led to an overall reduction in the structural properties of mass, stiffness and damping. These three properties traditionally controlled motion-related serviceability issues, but this is no longer the case. Engineers are increasingly reporting vibration problems in horizontal structures. Hence, the dominant design criterion has shifted from a basis of strength to one of motion. This thesis attempts to investigate the code requirements and state of the art analysis techniques involved in the vibration control of horizontal structures. Design techniques involving passive control, active control and some alternative control methods are discussed and evaluated, both qualitatively and quantitatively, through a series of example problems.
(cont.) Conventional engineering knowledge addresses vibration problems by increasing stiffness; however, this study indicates that these problems may be resolved much more efficiently by increasing damping, perhaps through the use of a tuned mass damper. Recommendations are made, suggesting that structural engineers should give serious consideration to the dominance of serviceability issues in design. As vibration problems continue to become more prevalent with ever-increasing span lengths, the time will come when non-traditional solutions, such as the use of tuned mass dampers to control vibrations, can no longer be ignored.
by Nicholas A. Shultz.
M.Eng.
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Zaterman, Daniel R. "Assessments of long-term uranium supply availability." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/54467.
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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2009.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 57-58).
The future viability of nuclear power will depend on the long-term availability of uranium. A two-form uranium supply model was used to estimate the date at which peak production will occur. The model assumes a constant annual rate of production growth to the peak, and a fixed reserves-to-production ratio thereafter. For mid-range assumptions of reserves and production growth rates, production is estimated to peak in 2076. Additionally, a net-present-value (NPV) analysis was used to model annual uranium exploration investment as a function of historical discovery costs; historical discovery, development, and production lifetimes; spot uranium prices; and credit availability. When back-tested over the past 30 years, the model successfully 'predicted' annual investment rates. Finally, multiples analysis was applied to estimate Australia's undiscovered and speculative resources, which were found to be 447,500 tU and 2,237,400 tU, respectively. The results of these analyses suggest that higher prices, increased exploration, and the use of non-conventional sources of uranium can provide plentiful supplies for at least the next century.
by Daniel R. Zaterman.
S.B.
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Braga, Robson. "Análise de decisões de investimento em condições de risco: um estudo na veracel celulose s/a." Universidade Federal da Bahia, 2006. http://www.adm.ufba.br/sites/default/files/publicacao/arquivo/1111.pdf.
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A busca por resultados satisfatórios por parte das empresas tem um de seus pilares sustentado sobre as escolhas realizadas no processo de decisão de investimentos. Nesse contexto analítico devem ser consideradas questões ligadas à natureza do projeto que pretende realizar e mais as variáveis que podem gerar resultados positivos ou negativos. Essas variáveis são consideradas na ponderação de risco que um determinado investimento tem em seu entorno e que merece análise quando do processo decisório. Esta dissertação tem como objetivo caracterizar o processo de decisões de investimento de uma grande indústria do segmento de celulose localizada no extremo sul da Bahia. A companhia em questão realizou investimentos elevados na construção de uma unidade fabril de produção de celulose voltada para o mercado externo. Tal magnitude torna a empresa um dos negócios mais importantes da região em que se localiza, sendo esse um dos motivos da escolha da mesma para a realização do estudo. Outro motivo, que torna o estudo justificável, é o fato do contexto em que as indústrias de celulose decidem seus investimentos ser marcado por diversas variáveis de risco que podem comprometer suas escolhas. No caso específico, os elementos de ordem política e ambiental, envolvendo, por exemplo, o cultivo do eucalipto, uma das principais matérias-primas para a produção de celulose e o impacto da indústria. O presente estudo investiga tais variáveis, revisa os debates que cercam o ambiente das empresas de celulose e pesquisa como a empresa em estudo pondera, controla e mitiga a influência dos eventos de risco que fazem parte de sua realidade. O estudo teve como método de coleta de dados o estudo bibliográfico, documental e entrevistas semi-estruturadas. Foi percebido que a indústria em questão utiliza as mais conhecidas técnicas de avaliação de investimentos, valendo-se do uso da simulação de cenários de risco e rigoroso processo de atendimento à legislação ambiental e estratégias de eliminação de risco, mostrando sintonia com as principais teorias sobre avaliação e decisões de investimento de longo prazo.
Salvador
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Mace, Anna V. "The long-term operating performance of IPOs." Honors in the Major Thesis, University of Central Florida, 2000. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/200.
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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.Bachelors
Arts and Sciences
Finance
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Lloyd, R., Jon L. Oliver, J. Moody, R. W. Myers, and Michael H. Stone. "Long-term Development of Youth Weightlifting." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/4671.
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