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Uzukwu, Elochukwu Eugene. "Forward." Bulletin of Ecumenical Theology, 1991. http://digital.library.duq.edu/u?/bet,1420.
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Fagelson, Marc A. "Forward." Digital Commons @ East Tennessee State University, 2013. https://www.amzn.com/140519989X.
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Book Summary: Tinnitus: A Multidisciplinary Approach provides a broad account of tinnitus and hyperacusis, detailing the latest research and developments in clinical management, incorporating insights from audiology, otology, psychology, psychiatry and auditory neuroscience. It promotes a collaborative approach to treatment that will benefit patients and clinicians alike.
The 2nd edition has been thoroughly updated and revised in line with the very latest developments in the field. The book contains 40% new material including two brand new chapters on neurophysiological models of tinnitus and emerging treatments; and the addition of a glossary as well as appendices detailing treatment protocols for use in an audiology and psychology context respectively.
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Bitter, James Robert. "Forward." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/5210.
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Book Summary: The Disordered Couple, Second Edition, focuses on couples with psychiatric disorders and/or relational disorders that significantly impact their relationship, mental health, and well-being. It is the first and only book to provide mental health professionals and trainees with cutting-edge, culturally sensitive, and evidence-based clinical strategies for working effectively with disordered couples.
While maintaining its focus on disordered couples, this second edition adds several new features and considers key trends that have impacted the structure of couples and families since the original edition appeared, including the influence of social media and technology, legalization of same-sex marriage, increases in the availability of Internet pornography, and changes in societal norms regarding romantic relationships. The disorders covered reflect revisions to the DSM-5 and both psychiatric disorders and relational disorders, and the book highlights clinically relevant and culturally sensitive intervention practices for working with a wide variety of disordered couples. Chapters also include a section on specific multicultural implications for the type of couple discussed.
With proven strategies for effectively assessing, conceptualizing, and implementing treatment with disordered couples, this book is an essential reference for marital, clinical, counseling, and psychiatry professionals, as well as trainees in these areas. The Disordered Couple, Second Edition, will be of great assistance to mental health professionals in providing disordered couples with the most up-to-date, culturally sensitive, and relevant clinical care.
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Tweed, Stephanie, and Erika Bradley. "Forward Thinking." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/3017.
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Forward thinking is a multi-faceted concept. Forward thinking does not entail predicting the future but rather anticipating what is next for an organization through the use of strategies, visions, and reflection. Words to describe forward thinking are possibility thinking, anticipation, tactical decision making, and envisioning.
Forward thinking applies to many areas of leadership. Within education, administrators particularly benefit from forward thinking strategies. Administrators can maximize his or her school’s forward thinking potential through strategies, reflection, and time management. Since the most successful strategies are built backwards, administrators must begin with the end result in mind; student achievement. Reflection allows administrators to look into the past to see deeper into the future by analyzing current trends and patterns to anticipate forward movement within his or her school. Time management is an administrator’s final step in maximizing his or her forward thinking potential. Designating time within an administrator’s schedule for deep reflection promotes a state of continuous awareness toward the future movement of his or her school.
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Tweed, Stephanie R., and Erika Bradley. "Forward Thinking." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/3055.
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Svensson, Fredrik. "Structure from Forward Motion." Thesis, Linköpings universitet, Bildbehandling, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-60136.
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This master thesis investigates the difficulties of constructing a depth map using one low resolution grayscale camera mounted in the front of a car. The goal is to produce a depth map in real-time to assist other algorithms in the safety system of a car. This has been shown to be difficult using the evaluated combination of camera position and choice of algorithms. The main problem is to estimate an accurate optical flow. Another problem is to handle moving objects. The conclusion is that the implementations, mainly triangulation of corresponding points tracked using a Lucas Kanade tracker, provide information of too poor quality to be useful for the safety system of a car.I detta examensarbete undersöks svårigheterna kring att skapa en djupbild från att endast använda en lågupplöst gråskalekamera monterad framtill i en bil. Målet är att producera en djupbild i realtid som kan nyttjas i andra delar av bilens säkerhetssystem. Detta har visat sig vara svårt att lösa med den undersökta kombinationen av kameraplacering och val av algoritmer. Det huvudsakliga problemet är att räkna ut ett noggrant optiskt flöde. Andra problem härrör från objekt som rör på sig. Slutsatsen är att implementationerna, mestadels triangulering av korresponderande punktpar som följts med hjälp av en Lucas Kanade-följare, ger resultat av för dålig kvalitet för att vara till nytta för bilens säkerhetssystem.
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Li, Xiaolei. "Quadgate forward-signalling pipelines." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442597.
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Daniel, Liam Yannick. "Maritime forward scatter radar." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7831/.
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This thesis is dedicated to the study of forward scatter radar (FSR) in the marine environment. FSR is a class of bistatic radar where target detection occurs at very large bistatic angle, close to the radar baseline. It is a rarely studied radar topology and the maritime application is a completely novel area of research. The aim is to develop an easily deployed buoy mounted FSR network, which will provide perimeter protection for maritime assets—this thesis presents the initial stages of investigation. It introduces FSR and compares it to the more common monostatic/bistatic radar topologies, highlighting both benefits and limitations. Phenomenological principles are developed to allow formation of forward scatter signal models and provide deeper understanding of the parameters effecting the operation of an FSR system. Novel FSR hardware has been designed and manufactured and an extensive measurement campaign undertaken. The outcome of this was the creation of the first comprehensive maritime FSR target and clutter signal database—results from which have been shown with preliminary analysis. Alongside experimental work, a sea surface model has been produced in order to estimate the effects of wave blocking in high sea states and assess FSR performance in these conditions.
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Liang, Kaicheng. "Forward viewing OCT endomicroscopy." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/87948.
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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014."February 2014." Cataloged from PDF version of thesis.
Includes bibliographical references (pages 60-69).
A forward viewing fiber optic-based imaging probe device was designed and constructed for use with ultrahigh speed optical coherence tomography in the human gastrointestinal tract. The light source was a MEMS-VCSEL at 1300 nm wavelength running at 300 kHz sweep rate, giving an effective A-line rate of 600 kHz. Data was acquired with a 1.8 GS/s A/D card optically clocked by a maximum fringe frequency of 1 GHz. The optical beam from the probe was scanned by a freely deflecting optical fiber that was mounted proximally on a piezoelectric tubular actuator, which was electrically driven in two perpendicular dimensions to produce a spiral scan pattern. The probe has a 3.3 mm outer diameter and is intended for endoscopic imaging. Multiple optical systems were designed to enable microscopic imaging at variable fields. The probe could also be electrically zoomed by tuning the driving voltage to the piezoelectric actuator, reducing the deflection range of the scanning fiber and thus the scanned field. The optical and mechanical design of the probe was optimized for both axial and transverse compactness.
by Kaicheng Liang.
S.M.
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Процев’ят, Т. І. "SMM проєкт "Університет.UA forward!"." Thesis, Київський національний університет технологій та дизайну, 2020. https://er.knutd.edu.ua/handle/123456789/16652.
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Singh, Mahim. "SOFTVIZ, a step forward." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0430104-135703/.
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Thesis (M.S.)--Worcester Polytechnic Institute.Keywords: Eclipse plug-in; tracer; timeline; software visualization; sunburst; SoftViz; ParaVis; error categorization framework; debugging; program understanding. Includes bibliographical references (p. 85-89).
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Goldenberg, David. "Forward Secure Fuzzy Extractors." W&M ScholarWorks, 2007. https://scholarworks.wm.edu/etd/1539626862.
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Smith, Michael Edward. "From forward deployment to forward presence: a new national strategy for the Pacific." Thesis, Monterey, California. Naval Postgraduate School, 1990. http://hdl.handle.net/10945/30721.
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Approved for public release, distribution is unlimitedThis thesis analyzes the changing strategic environment in East Asia and the Pacific. Despite sweeping foreign policy initiatives, the Soviets maintain a significant military capability. Even as the likelihood of the Soviet threat diminishes, low-intensity type conflict threaten U.S. regional interests. Additionally, changing regional perceptions are undermining traditional U.S. security arrangements. Rising Asian nationalism questions the need for forward deployment of U.S. forces within regional states. A policy of forward presence via maritime assets is the solution. U.S. naval assets would allow for a reasonable power projection capability in time of crisis, yet would meet fiscal constraints during peacetime through a scaling down of deployed assets. Other U.S. forces will maintain their ability to meet regional responsibilities through training exercises with regional forces and a build-up of the U.S. sealift capability. Now is the time to encourage regional states to assume greater responsibilities for their own defense. A regional maritime organization must be developed to maintain open trade routes. With a focused mandate, such an organization would not threaten individual national sovereignties and would promote regional cooperation and stability. An expansion of the U.S. Navy's peacetime mission will certainly serve the national interest. Increased port visits to economically less developed regions should be coordinated to support on-going or planned U.S. assistance programs
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Morard, Julien. "ACL command with forward converter /." Sion, 2008. http://doc.rero.ch/record/12811?ln=fr.
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Mason, Sarah. "The Impetus is Forward Motion." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2326.
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THE IMPETUS IS FORWARD MOTION is a book of personal essays about the author’s childhood, teenage years, and beginning of adult life. The essays explore the themes of relocation, family, pets, art, and education with a focus on revealing what it means to be female in the modern world. The essays serve as an emotional description of a coming-of-age period of a member of the boomerang generation.
The collection is more or less in reverse chronological order and begins with a recent account of a very long drive and ends with a familial truth that had remained a secret for a long time. The events and people in the essays are those who impacted the author’s life a great deal, in negative and positive ways.
Half of the essays are written as lyric essays, after John D’Agata and Anne Carson. The style of writing and subject matter for the other half of the essays was partially inspired by the straightforward, conversational tone of contemporary essay collections Bad Feminist, by Roxane Gay and Not that Kind of Girl, by Lena Dunham. In her essays, the author strives to not be like Sloane Crosley.
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Kuter, Ugur. "Planning under uncertainty moving forward /." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3802.
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Thesis (Ph. D.) -- University of Maryland, College Park, 2006.Thesis research directed by: Computer Science. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Deutsch, Owen. "Inclusionary Zoning: New Ways Forward." Scholarship @ Claremont, 2011. http://scholarship.claremont.edu/pomona_theses/98.
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This is a review of recent literature on best practices for implementing inclusionary zoning. Existing policies for creating affordable housing in the United States are briefly discussed. Common components of inclusionary zoning ordinances are then detailed, and legal and economic considerations are explained. Finally, the success of inclusionary zoning, its application to large cities, and expert policy recommendations are addressed, before concluding.
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Culhane, Leo. "Acceleration characteristics of forward skating." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114587.
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The purpose of this study was to quantify kinetic and kinematic variables in ice hockey forward acceleration tasks as well as to compare two skate models: a regular ice hockey skate (SKATE) and a skate with a modified flexible tendon guard (SKATE FTG). Twelve adult male subjects performed four acceleration trials with each skate model. Strain gauges on the blade permitted direct skate push-off force estimates while body accelerations (forward-backwards) were estimated from a sensor placed on the player's back. The results demonstrated the feasibility to quantify bilateral skating dynamics. In terms of single and double support time, the combined left and right stride estimates approximate 80% and 20% of the skating stride, respectively. Overall, there were no significant differences between skate models in terms of time to complete the skate task or average stride rates. Significant contact time differences between the right SKATE and right SKATE FTG (0.41 vs 0.36s) contributed to greater impulse and power output were observed; however, the opposing effect of air resistance did not permit substantial time improvements over the 54 m skating distance.Le but de cette étude était de quantifier les variables cinétiques et cinématiques pour une tache de patinage en ligne droite ainsi que de comparer deux modèles de patins: un modèle de patin de hockey conventionnel (SKATE) et un patin avec un protège-tendon souple modifié (SKATE FTG). Douze sujets adultes masculins ont effectué quatre essais d'accélération avec chaque modèle de patin. Les jauges de contrainte sur le support de lame ont permis d'estimer les forces de réaction au sol tandis que les valeurs d'accélérations (accélération et décélération) durant la phase de propulsion ont été estimés à partir d'un capteur placé sur le dos du joueur. Les résultats ont démontré la faisabilité de quantifier les forces dynamiques bilatérales. Les résultats ont confirmés la faisabilité de mesuré les forces dynamiques lors de tâches de patinage sur glace. Les valeurs temporelles de simple et de double-support combinant les patins droit et gauche sont approximativement 80 % et 20% d'une foulée complete. Dans l'ensemble, il n'y avait pas de différences significatives entre les modèles de patins en termes de temps pour compléter la tâche ni de différence entre les fréquences de foulée moyenne. D'importantes différences de temps de contact entre le patin droit SKATE et le patin droit SKATE FTG (0,41 vs 0.36s) ont contribué à une plus grande impulsion et puissance de sortie ont pu être observés, mais l'effet opposé de résistance de l'air n'a pas permis des améliorations substantielles de temps sur la distance de 54 m de patinage.
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Trayford, James William. "Forward modelling of simulated galaxies." Thesis, Durham University, 2017. http://etheses.dur.ac.uk/12371/.
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I employ a forward modelling approach to create and study mock observables, using the Evolution and Assembly of GaLaxies and their Environments suite of hydrodynamical simulations (EAGLE, described in chapter 2). The majority of this analysis focuses on a subset of 30,145 simulated galaxies, selected to have stellar masses M > 1.81 x 10^8 M_sun from the largest fiducial volume at z = 0.1. The philosophy behind this approach is that, ultimately, our galaxy formation models should predict observables if we are to claim that they reproduce the data. The forward modelling approach allows us to address a number of overarching questions, in particular; i) How well can cutting-edge simulations, such as EAGLE, reproduce fundamental observables over cosmic time?, ii) What are the systematic effects that come about when translating between the observable and physical properties of galaxies? and iii) What physical processes lead to the distributions of galaxy properties we observe? To this end, optical colours, luminosities, spectra and images are generated, where dust is modelled to either be absent, in a foreground screen or to trace the ISM using radiative transfer in chapters 3 and 5. Mock colour-mass and luminosity distributions are compared with data, revealing a broad agreement that is improved when dust is included and best for radiative transfer models. Chapter 4 shows how the z = 0.1 bimodal colour distribution that is found in both the data and the mock EAGLE photometry becomes established, along with the quenching mechanisms and timescales involved. In addition, chapters 5 and 6 investigate the accuracy of star formation activity proxies and mass recovery techniques, respectively. Detailed summaries are provided in each chapter, and compiled alongside conclusions in chapter 7.
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Foti, Christopher G. (Christopher Grant) 1971. "Reducing forward buying through derivatives." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9158.
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Thesis (M.Eng.)--Massachusetts Institute of Technology, Engineering Systems Division, 2000.Includes bibliographical references (p. 45-46).
This thesis examines the potential reduction of speculative inventory, commonly known as "forward buying", through the use of derivatives options, similar to those used on commodities exchanges. The reinforcing cycle of overbuying on promotion, which leads companies and industries into inescapable cycles of capacity excess & shortage, is explored and a framework for breaking free through the sale of call options on promoted products is proposed. Further speculation on the relevance of derivative instruments to Internet Exchanges and Collaborative Planning, Forecasting and Replenishment (CPFR) is advanced.
by Christopher G. Foti.
M.Eng.
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Hadjiprocopis, Andreas. "Feed forward neural network entities." Thesis, City University London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340374.
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Ley, Clemens. "Forward looking logics and automata." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:d6eb0004-47b9-4e32-b6c9-7796afecabd5.
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This thesis is concerned with extending properties of regular word languages to richer structures. We consider intricate properties like the relationship between one-way and two-way temporal logics, minimization of automata, and the ability to effectively characterize logics. We investigate whether these properties can be extended to tree languages or word languages over an infinite alphabet. It is known that linear temporal logic (LTL) is as expressive as first-order logic over finite words [Kam68, GPSS80]. LTL is a unidirectional logic, that can only navigate forwards in a word, hence it is quite surprising that it can capture all of first-order logic. In fact, one of the main ideas of the proof of [GPSS80] is to show that the expressiveness of LTL is not increased if modalities for navigating backwards are added. It is also known that an extension of bidirectional LTL to ordered trees, called Conditional XPath, is first-order complete [Mar04]. We investigate whether the unidirectional fragment of Conditional XPath is also first-order complete. We show that this is not the case. In fact we show that there is a strict hierarchy of expressiveness consisting of languages that are all weaker than first-order logic. Unidirectional Conditional XPath is contained in the lowest level of this hierarchy. In the second part of the thesis we consider data word languages. That is, word languages over an infinite alphabet. We extend the theorem of Myhill and Nerode to a class of automata for data word languages, called deterministic finite memory automata (DMA). We give a characterization of the languages that are accepted by DMA, and also provide an algorithm for minimizing DMA. Finally we extend theorems of Büchi, Schützenberger, McNaughton, and Papert to data word languages. A theorem of Büchi states that a language is regular iff it can be defined in monadic second-order logic. Schützenberger, McNaughton, and Papert have provided an effective characterization of first-order logic, that is, an algorithm for deciding whether a regular language can be defined in first-order logic. We provide a counterpart of Büchi's theorem for data languages. More precisely we define a new logic and we show that it has the same expressiveness as non-deterministic finite memory automata. We then turn to a smaller class of data languages, those that are recognized by algebraic objects called orbit finite data monoids. We define a second new logic and show that it can define precisely the languages accepted by orbit finite data monoids. We provide an effective characterization of a first-order variant of this second logic, as well as of restrictions of first-order logic, such as its two variable fragment and local variants.
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Roome, Patrick. "Asymptotics of forward implied volatility." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/30764.
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We study asymptotics of forward-start option prices and the forward implied volatility smile using the theory of sharp large deviations (and refinements). In Chapter 1 we give some intuition and insight into forward volatility and provide motivation for the study of forward smile asymptotics. We numerically analyse no-arbitrage bounds for the forward smile given calibration to the marginal distributions using (martingale) optimal transport theory. Furthermore, we derive several representations of forward-start option prices, analyse various measure-change symmetries and explore asymptotics of the forward smile for small and large forward-start dates. In Chapter 2 we derive a general closed-form expansion formula (including large-maturity and 'diagonal' small-maturity asymptotics) for the forward smile in a large class of models including the Heston and Schobel-Zhu stochastic volatility models and time-changed exponential Levy models. In Chapter 3 we prove that the out-of-the-money small-maturity forward smile explodes in the Heston model and a separate model-independent analysis shows that the at-the-money small-maturity limit is well defined for any Ito diffusion. Chapter 4 provides a full characterisation of the large-maturity forward smile in the Heston model. Although the leading-order decay is provided by a fairly classical large deviations behaviour, the algebraic expansion providing the higher-order terms depends highly on the parameters, and different powers of the maturity come into play. Classical (Ito diffusions) stochastic volatility models are not able to capture the steepness of small-maturity (spot) implied volatility smiles. Models with jumps, exhibiting small-maturity exploding smiles, have historically been proposed as an alternative. A recent breakthrough was made by Gatheral, Jaisson and Rosenbaum, who proposed to replace the Brownian driver of the instantaneous volatility by a short-memory fractional Brownian motion, which is able to capture the short-maturity steepness while preserving path continuity. In Chapter 5 we suggest a different route, randomising the Black-Scholes variance by a CEV-generated distribution, which allows us to modulate the rate of explosion (through the CEV exponent) of the implied volatility for small maturities. The range of rates includes behaviours similar to exponential Levy models and fractional stochastic volatility models. As a by-product, we make a conjecture on the small-maturity forward smile asymptotics of stochastic volatility models, in exact agreement with the results in Chapter 3 for Heston.
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Forster, Brian A. "Korean unification the way forward." Thesis, Monterey, Calif. : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/March/09Mar%5FForster.pdf.
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Thesis (M.A. in Security Studies (Far East, Southeast Asia, and Pacific))--Naval Postgraduate School, March 2009.Thesis Advisor(s): Weiner, Robert. "March 2009." Description based on title screen as viewed on April 23, 2009. Author(s) subject terms: Korean unification, The Republic of Korea, The Democratic People's Republic of Korea, economic interdependence, special economic zones, free trade area, collapse. Includes bibliographical references (p. 87-92). Also available in print.
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Almeida, Serra Costa Vitoria Pedro Miguel. "Topics on forward investment theory." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:158e9239-1385-4314-b337-3eed27c76dfc.
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In this thesis, we study three topics in optimal portfolio selection that are relevant to the theory of forward investment performance processes. In Chapter 1, we develop a connection between the classical mean-variance optimisation and time-monotone forward performance processes for infinitesimal trading times. Namely, we consider consecutive mean-variance problems and we show that, for an appropriate choice of the corresponding mean-variance trade-off coefficients, the wealth process that is generated converges (as the trading interval goes to zero) to the optimal wealth process generated by a time-monotone forward performance process. The choice of the trade-off coefficients is made in accordance to the evolution of the risk tolerance process of the forward performance process. This result allows us to provide a fresh view on the issue of time-consistency of mean-variance analysis, for we propose a method to update mean-variance risk preferences forward in time. As a by-product, our convergence theorem generalises a result by Gyöngy (1998) on the convergence of the Euler scheme for SDEs. We also provide novel results on the Lipschitz regularity of the local risk tolerance function of forward investment performance processes. The material in this chapter is joint work with Marek Musiela and Thaleia Zariphopoulou. Chapter 2 combines forward investment theory and partial information. Specifically, we construct forward investment performance processes in models where the drift is a random variable distributed according to a known distribution. The forward performance processes we consider are of the type U(t,x) = u(t,x, R_t), where R. denotes the process of cumulative excess returns, and u(t,x,z):[0,∞) × ℝ imes ℝN ⟶ ℝ is such that u(t,.,z) is a utility function satisfying Inada's conditions. We derive the Hamilton-Jacobi-Bellman (HJB) equation for u(.). The HJB equation is linearised into the ill-posed heat equation; then, using the multidimensional version of Widder's theorem, we fully characterise the solutions to this equation in terms of a collection of positive measures; the result is an integral representation of the convex conjugate function of u(t,.,z). We construct several examples, and we show how these can be combined, in the dual domain, to generate mixtures of forward investment performance processes. We also show that the volatility of these processes is intrinsic, in that it is not generated by changes of numéraire/measure. In Chapter 3, we provide an extension of the Black-Litterman model to the continuous time setting. Our extension is different from, and complements that of, Frey, Gabih, and Wunderlich (2012) and Davis and Lleo (2013). Specifically, we develop a novel robust estimator of instantaneous expected returns which is continuously shrunk towards the predictions of an asset pricing theory, such as the CAPM. We derive this estimator fairly explicitly and study some of its properties. As in the Black-Litterman model, such an estimator can be used to make optimal asset allocation problems in continuous time more robust with respect to estimation errors. We provide explicit solutions to the problem of maximising expected power utility of terminal wealth, when our estimator is used to estimate the drift. As an example, we illustrate our results explicitly in the case of a multifactor model, where Arbitrage Pricing Theory predicts that alphas should be approximately zero.
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Suwannakarn, Monthat. "Biofouling on forward osmosis system." Thesis, Suwannakarn, Monthat (2016) Biofouling on forward osmosis system. Honours thesis, Murdoch University, 2016. https://researchrepository.murdoch.edu.au/id/eprint/33949/.
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Fouling is an inevitable issue that all membrane systems have to face. The presence of membrane fouling causes membrane systems (such as reverse osmosis and forward osmosis) to suffer the increase of resistance thus reducing the efficiency of the systems. This raises concerns about the osmosis technology as it also reduces the system and membrane lifetime while increasing the maintenance costs.
From previous papers and literature review, polysaccharides were found to be the main contributor to membrane fouling. The literature explains the polysaccharides that caused the membrane fouling were alginate, BSA, AHA, xanthan and others however, only alginate and xanthan were tested in this research project. The mixing interaction of other cations such as Ca2+ with some of the aforementioned polysaccharides (salt in the form of CaCl2 and NaCl were also tested to see the changes in fouling effects when both are combined. Throughout the experiments, a fixed amount of NaCl and CaCl2 and the polysaccharide were kept constant. The draw solution (NaCl mixed with DI water) was always retained to be saturated. These experiments were designed in this way to examine the differences between each polysaccharide and its combination towards fouling behaviour, since alginate and xanthan have different chemical characteristics.
The results show that xanthan causes a higher resistance compared to alginate. In the case where NaCl and CaCl2 were present in the feed solution, the resistance of both polysaccharides greatly increases thus resulting in lowering the flux and ultimately decreasing the system efficiency. Out of all the experiments, the xanthan with salt resulted in highest flux decrease while the alginate only had the least flux decline (excluding the baseline experiment).
Further analysis was done using the total organic carbon (TOC) and confocal laser scanning microscopy (CLSM). These examinations demonstrated the characteristics and properties of the polysaccharide layers that were formed on the membrane surface. The CLSM result was compared with the flux and resistance movement and it was found that they supported each other (and the findings were closely related). Since CLSM analysis is able to show the x, y and z dimension, the thickness can be found within each CLSM images. Therefore the thickness of the polysaccharide (fouling) layer (from CLSM images) was thick and/or dense, the (a higher resistance was achieved) higher the resistance would be and vice versa.
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Savine, Alexandre Yurievich 1962. "Forward calorimetry at hadron collider." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/288749.
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Calorimeter has been an essential element of High Energy Physics Experiment for decades. As beam energies of hadron colliders reached the multi-TeV range, hermeticity of the calorimetric system became a high priority issue. Additional requirements arose from increased luminosity. The Forward Calorimeter (covering rapidity η >3) must to provide high quality measurements of hadronic jets (energy and position) at extremely high rate and at the same time withstand a harsh radiation environment. The Liquid Argon Tube Forward Calorimeter was developed at the University of Arizona to fulfill those requirements. Prototypes of the electromagnetic section (15X₀, later 25X₀) were tested at BNL and CERN secondary beams in 1993 and 1995. Data acquired in those tests allowed us to study such vital parameters of the calorimeter as response uniformity, energy and position resolution. An energy range from 2 GeV to 200 GeV and angles from 0.6° to 5.6° were covered. Observed results (together with extensive Monte-Carlo simulation studies of the Forward Region) allowed the Liquid Argon Tube Calorimeter to be chosen among several competing designs as the Baseline for the Forward Calorimeter of the ATLAS multi-purpose detector at the LHC (CERN).
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Almaghshi, Mona Abdullaah. "Prediction Intervals after Forward Selection." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/theses/2048.
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This paper presents prediction intervals for the multiple linear regression model after forward selection. The prediction interval is for a future value of the response variable Yf given a p×1 vector of predictors xf
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Verschoor, Willem Franciscus Cornelis. "Forward exchange market dynamics an empirical analysis of expectations, risk and innovations in forward foreign exchange /." Maastricht : Maastricht : Universitaire Pers Maastricht ; University Library, Maastricht University [Host], 1993. http://arno.unimaas.nl/show.cgi?fid=6226.
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McDonough, James P. Strom Mark W. "Forward observer personal computer simulator 2 /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Sep%5FMcDonough.pdf.
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Thesis (M.S. in Modeling, Virtual Environment, and Simulation (Movies))--Naval Postgraduate School, September 2005.Thesis Advisor(s): Rudolph P. Darken. Includes bibliographical references (p.65-66). Also available online.
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Corzo, García Beatriz. "Forward osmosis application for water reuse." Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/565820.
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Hybrid forward osmosis (FO) processes such as forward osmosis with membrane bioreactors (FO-MBR), electrodialysis (FO-ED), nanofiltration (FO-NF) or reverse osmosis (FO-RO) present promising technologies for wastewater reuse in agriculture. Their niche of application can be found when dealing with high-salinity wastewater in water stress situations, when the removal of trace organics or boron is targeted due to the multibarrier concept, or when water with high fouling potential is compulsory to treat, among other uses. In this case, one of these emerging technologies, FO-NF treatment has been studied at long-term with the aim of evaluating this technology at demonstration scale for irrigation purposes.
In order to design the definitive pilot demonstration plant, an intensive evaluation of draw solutions (DS) was performed by focusing on the wastewater reuse applications of hybrid forward osmosis (FO) processes. The substances studied were potassium formate, potassium phosphate, magnesium sulphate, sodium chloride, sodium polyacrylate and polyethylene glycol, and their osmotic pressure, conductivity, pH, thermostability, sunlight exposure, toxicity, FO filtration performance and replenishment costs were determined. Based on these characteristics, three DS, sodium polyacrylate, magnesium sulphate and potassium phosphate, were selected as the most interesting to be evaluated in the demonstration plant. The results also revealed that the most relevant DS properties for wastewater reuse under the studied conditions were the DS regeneration method, DS replacement price, pH adjustment and toxicity. These properties were shown to be more relevant than filtration flux when a maximum DS osmotic pressure value of 10 bar was used, establishing this pressure as the limit for efficient DS recovery. Thus, prioritizing energy consumption, NF 270 4040 from Filmtec (Dow Chemical), were selected as the most suitable recovery nanofiltration (NF) membrane; because they offered the best relationship permeate flow/feed pressure with an adequate rejection. Additionally, to select the most suitable FO membrane, five commercially available FO membrane modules were evaluated and compared, where thin-film composite (TFC) flat sheet membranes from Porifera showed the highest flux and the highest salt rejection, and the lowest permeability and salt rejection values were presented by cellulose triacetate (CTA) hollow fibre membranes from Toyobo.
Based on the information obtained, a FO/NF demonstration plant was constructed next to the wastewater treatment plant (WWTP) in San Pedro del Pinatar, in the region of Murcia (Spain). This plant represented the world’s first FO demonstration plant for municipal wastewater reclamation to be evaluated for agricultural purposes. The plant was operated treating 3 m3 h-1 of real wastewater with an average salinity of 3-5 mS
cm-1 and 1.5 mg L-1 of boron in continuous mode for 480 days. Two of the three DS that had been previously selected (sodium polyacrylate and magnesium sulphate) were evaluated in different periods of experimentation. In a later study, magnesium chloride was catalogued as a DS with great potential to achieve economical expenses during the whole operation. The operation with sodium polyacrylate led to reversible fouling on the FO and NF membranes and the permeate was not suitable for irrigation. Although the permeate quality obtained was acceptable using magnesium sulphate as DS, this generated severe irreversible fouling on NF membranes and therefore, it was discarded. Finally, magnesium chloride showed the best performance, with FO-NF membranes presenting a stable permeability and low membrane fouling during long-
term operation. The FO-NF permeate showed high quality for irrigation, achieving a conductivity value of 1 mS cm-1, a boron concentration below 0.4 mg L-1 and an average sodium adsorption ratio (SAR) of 1.98 (mequ L-1)0.5.La ósmosis directa (OD) utiliza los principios de la ósmosis para desalinizar agua. El proceso de ósmosis directa utiliza un fluido denominado solución extractora a partir del cual se extrae agua de la fuente principal a través de una membrana semipermeable, aprovechando las diferencias de presión osmótica. Este proceso tiene la desventaja de que no genera agua de alta calidad en una sola etapa debido a que el agua producto se mezcla con el agente osmótico de la solución extractora. Así, se debe prever un sistema de separación del agente extractor para obtener el agua deseada, lo que se denomina sistema híbrido. Durante la tesis doctoral se estudió un sistema híbrido OD-Nanofiltración a escala piloto, demostrando que el proceso híbrido OD-NF es una tecnología con baja propensión al ensuciamiento, que puede lograr un permeado estable y de alta calidad para la reutilización de aguas residuales en una operación a largo plazo. Sin embargo, el consumo energético y del agente extractor es relevante. La falta de módulos de membrana de OD optimizados y disponibles en el mercado sigue siendo la principal limitación para la aplicación del proceso de OD a gran escala. En un futuro cercano, se espera que este proceso emergente se vuelva más sostenible y competitivo para el caso de uso estudiado en esta tesis.
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Dudley, Theodore Robert. "Mechanics of forward flight in insects." Thesis, University of Cambridge, 1987. https://www.repository.cam.ac.uk/handle/1810/250902.
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Dolbec, Michael R. "Velocity estimation using forward looking sonar." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion.exe/07Mar%5FDolbec.pdf.
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Thesis (M.S. in Engineering Science)--Naval Postgraduate School, March 2007.Thesis Advisor(s): Doug Horner, Mathias Kölsch. "March 2007." Includes bibliographical references (p. 113). Also available in print.
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Wheeler, Daniel S. "Contrasting reduced overshadowing and forward blocking." Diss., Online access via UMI:, 2006.
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Gaspar, Raquel M. "Credit risk & forward price models." Doctoral thesis, Stockholm : Economic Research Institute, Stockholm School of Economics [Ekonomiska forskningsinstitutet vid Handelshögskolan i Stockholm] (EFI), 2006. http://www.hhs.se/efi/summary/686.htm.
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Lahmer, Tom. "Forward and inverse problems in piezoelectricity." kostenfrei, 2008. http://www.opus.ub.uni-erlangen.de/opus/volltexte/2008/958/.
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Raja, Abdullah Raja Syamsul Azmir. "Forward scattering radar for vehicle classification." Thesis, University of Birmingham, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442611.
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Forward scattering radar (FSR) is a special mode of bistatic radar that can be used for target detection and classification. FSR offer a number of interesting features such as: relatively simple hardware; an enhanced target radar cross section (compared to traditional radar); a long coherent interval of the receiving signal; robustness to stealth technology and possible operation using non-cooperative transmitters. This thesis is dedicated to the experimental study of the feasibility of FSR and its application for automatic ground target classification. It introduces the radar system itself, fundamental theoretical analysis, target recognition algorithm and the targets' classification subsystem. For target recognition, the effect of Shadow Inverse Synthetic Aperture Radar (SISAR) is used. The overall classification system is described, this includes the extraction of features from the radar measurements, and the use of Fourier Transform and Principal Component Analysis (PCA) to transform these features prior to using the K-Nearest Neighbours (KNN) classifier. By analysing 917 experimentally obtained vehicle signatures, the performance of the system is experimentally evaluated and the effectiveness of the system is confirmed. The limitations of the work and its future direction are also discussed.
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Englund, Carl. "Forward commitment : en metod för innovationsupphandling." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-20084.
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Samhället är i stort behov av nya innovativa varor och tjänster för att lösa stora framtida utmaningar. Nedbrutet till hälso- och sjukvårdens behov handlar det om att hantera en förändrad demografisk situation, livsstilssjukdomar, sjukhusresistenta bakterier, begränsad personalstyrka, begränsad ekonomi och nationella och internationell miljöpolicy. Hälso- och sjukvården behöver tänka i nya banor för att uppfylla framtida mål om en tillgänglig och patientnära vård som samtidigt är ekologiskt hållbar. Hälso- och sjukvårdssektorn står för nära nog 10 % av Europeiska unionens BNP på 14 000 miljarder Euro och kan genom sin storlek styra ett omfattande belopp mot innovationsfrämjande åtgärder i samhället. Innovativa idéer kan användas i att både förebygga vård och vid själva vårdåtgärden – särskilt viktig i tider av problem med rekrytering av personal. Styrning av pengar mot innovation sker genom upphandling. Här finns stora möjligheter att ”dra” innovativa idéer ur marknaden genom upphandlarens genuina engagemang och vilja till förnyelse. Idag råder ett glapp mellan behov och innovativa alternativa varor och tjänster på marknaden. Detta till mycket stor del på grund av ett för stort avstånd mellan offentlig användare och potentiella leverantörer. Detta orsakar en problematisk paradox särskilt utmärkande för offentlig sektor. - Upphandlaren säger: Vi skulle gärna köpa kostnadseffektiva och miljövänliga produkter om det fanns sådana alternativ. - Leverantören svarar: Vi hade gärna utvecklat och tillverkat sådana produkter om ni hade efterfrågat dem. Syftet med denna studie är att förklara hur risker kan minimeras vid offentlig upphandling inom hälso- och sjukvårdssektorn avseende innovativa produkter. En metod som kan hjälpa potentiella leverantörer att kommersialisera innovativa lösningar och platta ut deras upplevda berg av risker mellan demonstrations- och uppskalningsfaserna. Datainsamlingen för den här avhandlingen är genom litteratur i form av böcker, olika publikationer, presentationer och läromedel. En fallstudie har genomförts på distans för att förtydliga förståelsen för beskriven modell och att den fungerar. Gaynor Whyles och Joram Nauta är författarens viktigaste leverantörer av informativ text, antingen publicerad av dem själva eller av andra rekommenderade författare. Sammanfattning De har genom omfattande postkorrespondens delat sina kunskaper om ett upphandlingsverktyg och hur det framgångsrikt kan tillämpas. Gaynor Whyles är en nyckelperson med mångårig erfarenhet ifrån innovationsupphandling vid brittiska Department of Business, Innovations and Skills och som utvecklare av Forward commitment procurement från en idé till ett praktiskt verktyg. Joram Nauta är den andra nyckelpersonen i sin roll som Senior Projektledare på TNO, och vägvisare under upphandlingsprocessen vid Erasmus Medical Centre. TNO eller nederländska Centrum för Hälsoresurs blev delaktiga redan från projektstarten 2009 och ända fram till att avtal undertecknades 2013. Det finns en upphandlingsmetod som främjar marknadens innovativa idéer och får dem kommersialiserade: Forward Commitment Procurement. Det är en metod som speglar hur det privata näringslivet hanterar försörjningskedjornas värdeskapande aktiviteter genom innovation. Den privata sektorn är tydlig i sin efterfrågan och annonsering av denna. Den kanaliserar ut att det finns ett nödvändigt behov av nytänkande och att den är villig att köpa nytt. Detta tar Forward Commitment Procurement fasta på. Metoden innebär att problem och behov identifieras; behovet annonseras ut i olika medier i god tid och intresserade och innovationsbenägna marknadsparter oavsett erfarenhet bjuds in till konsultation samt att en upphandlingsstrategi utvecklas med tilldelningskriterier och konkurrensdialoger med tänkbara leverantörer. Metoden består således av de tre stegen identifiering, marknadsengagemang och upphandling. Engagemanget med marknadens parter är det utmärkande draget där offentlig myndighet, exempelvis sjukvården, visar viljan att köpa en ny produkt som uppfyller funktionsbaserade kriterier. Samtidigt lär sig myndigheten om marknaden och vilka förutsättningar som gäller för innovation. Överenskommelsen blir att behövlig tid för innovation avsätts, den lösning som bäst uppfyller myndighetens funktionsbaserade kriterier köps samt att myndigheten visar att det finns en större avsättningsmarknad för innovativ lösning. Innovation är nämligen något bra för levererande företag då det ger publicitet, ökade marknadsandelar samt ökad lönsamhet. Vägen mellan innovation och kommersialisering är dock lång och ofta besvärlig, men det kan offentlig sektor hjälpa till med genom att bjuda in andra eventuella kunder vid olika workshops och marknadsdagar. En ”win-win” situation uppstår där sjukvårdens behov tillgodoses eller till och med överträffas, samtidigt som det skapas en lönsam affär för företaget eller konsortiet.
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Kaas, Susanna. "Validation of market commodity forward curves." Thesis, KTH, Matematisk statistik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-172427.
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In this thesis the aim was to propose a method that could be used to validate the market commodity forward curve and analyse if the method is possible to apply. The thesis is limited to forward curves with equally spaced maturities up to one year and seasonal price patterns. The method suggested is to construct a reference curve by simulating futures prices with the seasonal cost-of-carry model and perform linear interpolation between these simulated values. The validation method was applied to UK natural gas futures traded on the Intercontinental Exchange for every trading day in December 2013. Estimates were based on settlement prices for the period 2011- 01-01 to 2013-11-30. Resulting reference curves appeared to capture the seasonal behaviour of UK natural gas in a correct way and the shape of the curve seemed to follow the market curve. However the majority of observed time series representing the state variables did not fulfil model assumptions. Therefore the observation period was shortened to 2012-07-01-2013-11-30 but the result was only slightly improved. It was still the case that some of the state variable processes did not follow model assumptions. By performing likelihood ratio test it was found that for some state variables the speed of mean reversion could be set to zero. The conclusion was that the proposed method is not appropriate to use for validating the market curve for the considered contracts. This is because model assumptions for state variables were not always fulfilled and some of the state variable process could be reduced to random walks. Perhaps model assumptions are fulfilled if the method is applied to another time period. However it is difficult to use a method for validation if historical data sometimes suggests that times series are not stationary and do not fulfil model assumptions. Finally the conclusion was drawn that for the chosen commodity the validation method is not applicable.I detta examensarbete var målet att föreslå en metod för att validera marknadskurvan för råvaruterminer och utvärdera den föreslagna metoden. Examensarbetet är begränsat till marknadskurvor för råvaruterminer med säsongsberoende och likafördelade förfallodagar upp till ett år. Valideringsmetoden som föreslås är att med en teoretisk modell skapa en referenskurva som kan jämföras med marknadskurvan. Metoden för att skapa referenskurvan är att simulera terminspriser med seasonal cost-of-carry model och sedan interpolera linjärt mellan de simulerade punkterna. Valideringsmetoden appliceras på råvaruterminer med UK naturgas som underliggande tillgång och handlas på Intercontinental Exchange. Det historiska dataset som användes utgörs av observationsperioden 2011-01-01 till 2013-11-30. Referenskurvor skapades för varje handelsdag i december 2013 och verkade uppfylla det förväntade säsongsberoendet hos naturgas. Analyser visade dock att modellantagandena inte alltid var uppfyllda av de genererade processerna från historiskt data. Observationsperioden kortades ned men resultatet blev endast något bättre, dock uppfyllde fortfarande inte några av processerna de uppställda antagandena. Resultat visade också att vissa av processerna för båda observationsperioderna kunde reduceras till slumpvandringar. Slutsatsen av arbetet är att den föreslagna metoden inte är lämplig för validering av marknadskurvan för den analyserade tidsperioden. Orsaken till detta var att modellantaganden inte var uppfyllda för alla tillståndsvariabler samt att några av processerna kunde reduceras till slumpvandringar. Dock är det möjligt att modellantaganden skulle kunna uppfyllas för en annan tidsperiod. Eftersom det är svårt att använda en metod för validering om historisk data inte alltid uppfyller modellantaganden och om processerna inte är stationära drogs slutsatsen att den föreslagna metoden inte är lämplig för den analyserade råvaran.
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Tang, Yao. "Partial decode-forward in relay networks." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121541.
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Cooperative transmission acts as a distributed solution for providing robust wireless communications. It pools available resources, such as power and bandwidth, across the network. The relay network is the simplest information theoretic model for a cooperative wireless network and a full understanding of communication limits over such a network can potentially shed light on the design of more efficient wireless networks. However, the capacity of the relay network is still unknown. As a step towards the goal of calculating the capacity, we derive the capacity bounds for a single-source single-destination relay network based on partial decode-forward. In the first part of the thesis, we review existing bounds on the capacity of the discrete memoryless relay channel. We also review decode-forward and partial decode-forward in the relay network. In the second part of the thesis, we first introduce a discrete memoryless relay network model consisting of one source, one destination and N relays. We then design a scheme based on partial decode-forward relaying. The source splits its message into one common part and N+1 private parts which are to be decoded at different relays. The source encodessplit message parts using length-N block Markov coding, in which each private message part is independently superimposed on the common parts of the current and N previous blocks. Using joint sliding window decoding, each relay fully recovers the common message part and its intended private message part with the same block index, then forwards them together to the following nodes in the next block. We derive the achievable rate of this scheme in a compact form. The result is a generalization of and can be particularized to a known decode-forward lower bound for an N-relay network and partial decode-forward lower bound for a two-relay network. We then apply our proposed scheme to a Gaussian relay network and obtain its capacity lower bound considering power constraints at transmitting nodes. In the third part of the thesis, we introduce the concept of exhaustive message splitting for partial decode-forward in a single-source single-destination relay network with N relays, in which the relays are divided into subsets, and each different relay subset has a distinct private message part to decode. We study this scheme in more depth in a three-relay network based on block Markov encoding. We derive its achievable rate. Finally, we apply this scheme to a Gaussian three-relay network and show that our scheme generalizes network decode-forward and the private message splitting scheme as shown in the second part.La transmission coopérative agit comme étant une solution diffusée, permettant de fournir une communication sans fil très robuste. Elle regroupe les ressources disponibles, comme la puissance et la bande passante, à travers le réseau. Le réseau à relais est le modèle théorique le plus simple pour un réseau sans fil coopératif et la compréhension des limites de communication à travers de ce réseau permet potentiellement de saisir la conception d'un réseau sans fil plus efficace. Par contre, la capacité du réseau à relais est encore inconnue. Dans cette thèse, nous adressons la conception du schéma du decode-forward partiel dans un réseau à relais ayant une source et une destination unique. Dans la première partie de cette thèse, nous révisons le réseau à relais. Nous révisons aussi le decode-forward ainsi que le decode-forward partiel dans les réseaux à relais. Dans la deuxième partie de cette thèse, nous introduisons un réseau à relais sans mémoire composé d'une source, d'une destination et de relais N. Par la suite, nous concevons un schéma à partir du réseau decode-forward partiel. La source divise son message en une partie commune et en parties privées N+1 qui sont destinées à des relais différents. La source code les parties du message divisé en utilisant le codage length-N black Markov, dans lequel chaque partie du message privé est superposé indépendamment sur les parties communes du bloc actuel et des blocs précédents N. En utilisant le décodage conjoint fenetre coulissante, chaque relais récupère la partie du message commune et sa partie du message privé ayant le même index bloc, et les envoi par la suite ensemble aux nœuds du bloc suivant. Nous dérivons son taux réalisable dans un format compact. Le résultat permet de réduire la borne inférieure connue du decode-forward d'un réseau à N-relais et la borne inférieure du decode-forward partiel pour un réseau à deux relais. Nous appliquons par la suite notre schéma propositionnel à un réseau à relais gaussien et d'obtenir sa capacité de borne inférieure en prenant en compte les contraints de puissance aux nœuds émetteurs. Dans la troisième partie de cette thèse, nous introduisons le fractionnement exhaustif des messages pour le decode-forward partiel ayant une source et une destination unique dans un réseau à relais ayant N relais, dans lequel chaque sous-ensemble différent du relais contient un message privé distinct à décoder. Nous étudions profondément ce schéma dans un réseau à trois relais basé sur le codage un bloc Markov. Nous dérivons son taux réalisable. Nous fournissons un graphique orienté qui détaille le superpositionnement de la structure du codebook afin d'aider le lecteur à comprendre la hiérarchie de la génération du codeword. Finalement, nous appliquons ce schéma à un réseau à trois relais gaussien et nous montrons que notre schéma généralise le relais decode-forward et le schéma du fractionnement du message privé comme démontré dans la seconde partie.
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Williams, Peter Howard. "Hadronic Higgs production with forward jets." Thesis, Durham University, 2003. http://etheses.dur.ac.uk/3131/.
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The production of a Higgs boson with central rapidity, decaying to bb and accompanied by two jets that are forward in rapidity is presented as an important class of events at the Large Hadron Collider. Specifically, we study central Z boson production accompanied by rapidity gaps on either side as a way to gauge Higgs production via weak boson fusion at the LHC. We analyse the possible backgrounds for the bb decay mode and show that these can be substantially reduced. Special attention is paid to the evaluation of the gap survival factor, which is the major source of theoretical uncertainty in the rate of H, Z and W central production events with rapidity gaps. More generally, in relation to Higgs plus forward jet production, we consider the hadronic radiation patterns for the generic process of bb plus two forward jet production at the LHC, where the (centrally produced) bb originate either from a Higgs, a Z or from standard QCD production processes. A numerical technique for evaluating the radiation patterns for non-trivial final states is introduced and shown to agree with the standard analytic results for more simple processes. Significant differences between the radiation patterns for the Higgs signal and the background processes are observed and quantified. This suggests that hadronic radiation patterns could be used as an additional diagnostic tool in Higgs searches in this channel at the LHC. We also study the applicability of an equivalent photon/gluon approximation in describing events with a central system accompanied by two forward jets.
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Zeithammer, Robert 1975. "Forward-looking bidders in sequential auctions." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29645.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, 2003.Includes bibliographical references (leaves 95-97).
At Internet auction sites like eBay, similar goods are often sold in a sequence of auctions. Buyers can therefore benefit from forward-looking bidding strategies that take into account the available information about future auctions. This dissertation develops a model of such bidding, provides both experimental and econometric evidence of the model's relevance to behavior, and explores the impact of forward-looking bidding on the seller's optimal selling strategy as well as on the overall market equilibrium. Extending prior sequential-auction theories, the proposed model assumes that bidders know their private valuations of objects auctioned in the near future. Rational bidders "bargain-hunt" in that they bid less than they would otherwise, and early bids decrease with the private values of later objects. The model's predictions are tested in two laboratory experiments, both involving a sequence of two auctions. Both experiments show that first-auction bids decrease with the private values of the future object, but the second experiment suggests that the average decrease is smaller than predicted by the theory. An econometric analysis of eBay data finds that buyers seem to look ahead, and on average adjust their bids down as a function of their private preferences for the objects sold in the near future. They also bid less when the same item they are bidding on is available within the next few auctions. To explore the supply-side of a sequential auction marketplace, the dissertation analyzes a model of a long-lived monopolist facing overlapping generations of forward-looking buyers. When the seller learns about the current auction-market demand from past prices, bargain-hunting poses not only the obvious cost of a lower average revenue, but it also provides a benefit to the seller by making prices more informative.
(cont.) In equilibrium, the seller limits the extent of bargain-hunting by threatening to withhold future supply, but the threat is only credible when the profitability of the auction-market is close to the seller's outside option. Therefore, bargain-hunting can coexist with strategic selling, but is shown to be a self-regulating phenomenon that diminishes when the existence of the auction-market is threatened by an outside spot-market.
by Robert Zeithammer.
Ph.D.
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Hadjiyiannis, Nicholas. "Canonical correlation of shipping forward curves." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62532.
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Thesis (S.M. in Ocean Engineering)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2010.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 106-109).
The behavior and interrelations between the main shipping forward curves are analyzed using multivariate statistics after removing the volatility distortions dictated by the Samuelson hypothesis. Principal Components Analysis and Canonical Correlation analysis were used to demonstrate how the task of explaining the various shipping forward curves can be simplified substantially and how very high correlations can be achieved between shipping forward curves. The conditions under which correlations are higher are discussed as well as the various applications of these results using case studies. Applications include trading from a hedge fund perspective, cross hedging any physical exposure in illiquid markets and portfolio optimization. Conditioning as a tool is also examined to demonstrate how more reliable correlation results can be obtained for cross hedging or other purposes, and how the best trading opportunities can be unveiled conditional on recently observed data. Tanker valuations are carried out using the adjusted forward curves with the RAFL ship valuation model. The results are very close to transaction prices for relatively modem vessels while deviations in older ships are explained with regards to phase out regulations and other factors. The ship value volatility and consequently the valuations of typical options are substantial and increase as a percentage of the ship value with age. These results have to be considered seriously in shipping transactions that include optionalities which are very common.
by Nicholas A. Hadjiyiannis.
S.M.in Ocean Engineering
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Darvazehnoie, Akbar Shahrbaf. "Stability of ships with forward speed." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/1446111/.
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The initial stability of a ship is currently evaluated by empirical formula based largely on a static approach. Evidently stability is affected by speed that causes variation of pressure distribution on the wetted surface of a ship's hull, and generated waves on the surface of water by the vessel's motion. Forces and moments resulting from bottom pressures, as the speed of the ship changes, are significantly different for the ship at rest and in a seaway. The principal aim of the research is to investigate the effect of variations of forward speed on stability of a ship in calm water. The thesis presents theoretical and experimental approaches of the research. The novelty of the research results leads to the conclusion that although increasing speed may improve the stability of a ship in some cases, it also depends on heeling angle or on any asymmetry of the wetted area of a hull. Taking into account asymmetry effects, unbalanced pressure distribution acting on the wetted surface of the hull, in some cases, hence, decrease of stability is also possible. On a moving, partially immersed body, hydrodynamic and hydrostatic forces predominate. These forces arise owing to interaction between the body's motion and its weight with respect to the surrounding water. In order to calculate these forces, the panel method of Computational Fluid Dynamics (CFD) has been applied to identify the velocity and pressure distribution on the wetted surface of a ship's hull. The mathematical model adopted is based on the source distribution on the ship's hull, known as the Kelvin source. The model for a body travelling with steady forward speed, where its motion does not disturb the free surface, is known as double body theory. For consideration of waves generated by the motion of the ship on the free surface, a three dimensional linearised potential flow solution has been utilised. Comprehensive tests conducted in the UCL towing tank have established a better understanding of the significance of variation of ship's stability associated with forward speed in calm water. It is shown that an accurate judgement regarding the ship's stability cannot be made if only the effect of forward speed, as a single parameter, is considered. The heeling angle is another important parameter that must also be taken into account. The effects of a combination of both variables have been investigated, and are reported herein. The research is presented showing that the applied CFD method may be developed as an alternative method to assess stability of a ship in seaway, but there is a long way for the CFD approach to replace towing tank testing. At present, CFD may be used for consideration as a precursor to improve ship's stability during the design stage, for modification, and before operation. It is hoped that in future the findings of the experimental approach of this form of research could be used as additional guidance to be incorporated within the stability documentation for individual ships at the design stage, and ship trials.
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Siggs, Owen M. "Forward genetic analysis of mammalian immunity." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:caaf6ee7-e2b1-4fe1-a47c-1d6b76b249a4.
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Mutation, whether spontaneous or induced, is the premier tool for understanding gene function. One approach is to create mutations in a specific gene, and then use the resulting cell or organism to search for a phenotype. An alternative is to create mutations at random, and focus first on the identification of phenotypes. The mutation that underlies a phenotype can then be tracked down, forming the foundation of testable hypotheses. Using random chemical mutagenesis in mice, I have identified 20 heritable phenotypes affecting either the innate or adaptive branches of immunity. The genetic basis of 18 of these phenotypes was solved, caused by mutations in at least 16 unique genes. Five of these genes were not previously known to be involved in immunity, and a detailed analysis of four of them is provided in this thesis. These include genes encoding the following proteins: the inactive rhomboid protease iRhom2, which is specifically required for the secretion of tumour necrosis factor alpha; the hypothetical phospholipid flippase ATP11C, required for B cell development in the adult bone marrow; the folliculin-interacting protein FNIP1, also required for B cell development; and the zinc finger transcription factor ZBTB1, essential for the development of all lymphocyte lineages. These findings uncover new entry points for the understanding of mammalian immunity, and highlight the value of mouse forward genetics in the understanding of mammalian phenomena in general.
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Gaspar, Raquel Medeiros. "Credit risk & forward price models." Doctoral thesis, Stockholm School of Economics, 2006. http://hdl.handle.net/10400.5/11900.
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Doutoramento em GestãoThis thesis consists of three distinct parts. Part I introduces the basic concepts and the notion of general quadratic term structures (GQTS) essential in some of the following chapters. Part II focuses on credit risk models and Part III studies forward price term structure models using both the classical and the geometrical approach. Part I is organized as follows. Chapter 1is divided in two main sections. The first section presents some of the fundamental concepts which are a pre-requisite to the papers that follow. All of the concepts and results are well known and hence the section can be regarded as an introduction to notation and the basic principles of arbitrage theory. The second part of the chapter is of a more technical nature and its purpose is to summarize some key results on point processes or differential geometry that will be used later in the thesis. For finite dimensional factor models, Chapter 2 studies GQTS. These term structures includeas special cases, the affine term structures and Gaussian quadratic term struc tures previously studied in the literature. We show, however, that there are other, non-Gaussian, quadratic term structures and derive sufficient conditions for the exis tence of these general quadratic term structures for zero-coupon bond prices. On Part II we focus on credit risk models. In Chapter 3 we propose a reduced form model for default that allows us to derive closed-form solutions for all the key ingredients in credit risk modeling: risk-free bond prices, defaultable bond prices (with and without stochastic recovery) and probabihties of survival. We show that all these quantities can be represented in general exponential quadratic forms, despite the fact that the intensity of default is allowed to jump producing shot-noise effects. In addition, we show how to price defaultable digital puts CDSs and options on defaultable bonds. Further on, we study a model for portfolio credit risk that considers both firm-specific and systematic risk. The model generalizes the attempt of Duffie and Garleanu (2001). We find that the model produces realistic default correlation and clustering effects. Next, we show how to price CDOs, options on CDOs and how to incorporate the link to currently proposed credit indices. In Chapter 4 we start by presenting a reduced-form multiple default type of model and derive abstract results on the influence of a state variable X on credit spreads when both the intensity and the loss quota distribution are driven by X. The aim is to apply the results to a real life situation, namely, to the influence of macroeconomic risks on the term structure of credit spreads. There is increasing support in the empirical literature for the proposition t at both the probability of default (PD) and the loss given default (LGD) are correlated and driven by macroeconomic variables. Paradoxically, there has been very little effort, from the theore:J;icalliterature, to develop credit risk models that would take this into account. One explanation might be the additional complexity this leads to, even for the "treatable" default intensity models. The goal of this paper is to develop the theoretical framework necessary to deal with this situation and, through numerical simulation, understand the impact of macroeconomic factors on the term structure of credit spreads. In the proposed setup, periods of economic depression are both periods of higher default intensity and lower recovery, producing a business cycle effect. Furthermore, we allow for the possibility of an index volatility that depends negatively on the index level and show that, when we include this realistic feature, the impacts on the credit spread term structure are emphasized. Part Ill studies forward price term structure models. Forward prices differ from futures prices in stochastic interest rate settings and become a.n. interesting object of study in their own right. Forward prices with di!ferent maturities are martingales under different forward mea sures. This mathematical property implies that the term structure of forward prices is always linked to the term structure of bond prices, and this dependence makes forward price .term structure models relatively harder to handle. For finite dimensional factor models, Chapter 5 applies the concept of 'GQTS to the term structure of forward prices. We show how the forward price term structure equa tion depends on the term structure of bond prices. We then exploit this connection and show that even in quadratic short rate settings we can have affine term structures for forward prices. Finally, we show how the study of futures prices is naturally embedded in the study of forward prices, that the difference between the two term structures ma.y be determin istic in some (non-trivial) stochastic interest rate settings. In Chapter 6 we study a fairly general Wiener driven modl for the term structure of forward prices. The model, under a fixed martingale measure, Q, is described by using two infinite dimensional stochastic differential equations (SDEs). The first system is a standard HJM model for (forward) interest rates, driven by a multidimensional Wiener process W. The second system is an infinite SDE for the term structure of forward prices on some specified underlying asset driven by the same W. Since the zero coupon bond volatilities will enter into the drift part of the SDE for these forward prices, the interest rate system is needed as input to the forward price system. Given this setup, we use the Lie algebra methodology of Bjork et al to investigate under what conditions, on the volatility structure of the forward prices and/or inter est rates, the inherently (doubly) infinite dimensional SDE for forward prices can be realized by a finite dimensional Markovian state space model.
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Swasey, Olivia. "Forward Momentum: New & Selected Poems." Kent State University Honors College / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1554819566616789.
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Davidsson, Staffan. "Adaptive driver information : the way forward?" Licentiate thesis, Luleå, 2009. http://pure.ltu.se/ws/fbspretrieve/3375844.
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Li, Qingfeng. "Double-pulse laser-induced forward transfer." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0033/document.
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Pour résoudre la limitation inhérente au procédé d’impression laser LIFT, une approche utilisant une double impulsion (DP-LIFT) a été développée au cours de cette thèse. Dans ce processus, une irradiation laser de durée de quelques dizaines de microsecondes crée un bain de métal en fusion et une seconde impulsion ultra-brève induit le mouvement du fluide, la formation d’un jet ou d’une goutte et le transfert du métal liquide. Cette thèse présente une étude expérimentale détaillée sur le processus DP-LIFT. L'influence des paramètres des deux irradiations laser a été étudiée en s’appyuant sur un ensemble de méthodes d'observation. Pour étudier l’influence de ces paramètres sur la dynamique de l’éjection, un modèle basé sur la conservation de l’énergie a été utilisé. De plus, nous avons démontré que, pour certaines configurations des diamètres respectifs des deux spots lasers, des nanojets focalisés étaient générés. Enfin, en conservant une épaisseur fixe du film métallique, des gouttelettes uniques, sans débris, d'un diamètre allant de 670 nm à 6,0 µm ont été imprimées avec une reproductibilité élevée. des matrices de piliers ont également été imprimées pour démontrer le potentiel de la méthode LIFT à double impulsion pour la fabrication de micro-structures 3DTo solve the inherent limitation of Laser-induced Forward Transfer (LIFT), a double pulse LIFT (DP-LIFT) approach has been developed in this thesis. In this process, a first long pulse laser irradiation creates a melted metal pool and a second ultrashort pulse induces the fluid motion and initiates the jetting transfer. This thesis provides a detailed experimental study on the DP-LIFT process. The influence of double pulse parameters on the jetting phenomena has been carefully studied by means of various observation methods. To predict the jetting behaviors, an energy balanced model has been used. Moreover, we demonstrated that for some configurations of the respective diameters of the two lasers, focused nanojets are generated from the melting pool. Finally, from a fixed thickness of the donor film, debris-free single droplets with diameters ranging from 670 nm to 6.0 µm have been printed with high reproducibility. 2.5 D pillars matrix are printed to demonstrate the potential of the double pulse LIFT method for the fabrication of 3D micro-structures
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Chandorkar, Chaitrali Santosh. "Data Driven Feed Forward Adaptive Testing." PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/1049.
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Test cost is a critical component in the overall cost of the product. Test cost varies in direct proportion with test time. This thesis introduces a data driven feed forward adaptive technique for reducing test time at wafer sort while maintaining the product defect level. Test data from first insertion of wafer is statistically analyzed to make a decision about adaptive test flow at subsequent insertions.
The data driven feed forward technique uses a statistical screen to analyze test data from first probe of wafer and provides recommendations for test elimination at second insertions. At the second insertion dies are subjected to only the optimum number of tests for a reduced test flow. This technique is applicable only for the products which are tested at two or more insertions.
The statistical screen identifies the dies for reduced test flow based upon correlation of tests across insertions. The tests which are repeated at both the insertions and are highly correlated are the candidates of elimination at second insertion.
The feed forward technique is applied to a mixed signal analog product and figures of merit are evaluated. Application of technique to the production data shows that there is an average 55% test time reduction when a single site is tested per touchdown and up to 10% when 16 sites are tested in parallel per touchdown.