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Wei, Xiaowei. "Loop Kindergarten." Thesis, KTH, Arkitektur, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281371.
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The project "Loop Kindergarten" is designed a new mode for a kindergarten in Peking China. In my opinion and based on my own experience, Chinese children are always under quite high pressure and expectations, even during childhood. Even the attitude towards play is very different in China. Play center activities are also called guided play in western countries; on the contrary, it is called corner play in China. Play was seen as being conflict with learning, and thus as time wasting. That is why Chinese children are always lack of free play. In metropolis like Peking, children often don't have enough access to nature, unlike in Europe. Compared to Europe, nature in the middle of city is not under good conditions. How to provide a better environment for children to play in terms of nature is one of the main topics of my project My goal is to design a new mode of kindergarten that helps children have a better and happier childhood in terms of nature on the one hand, but also meets the needs from society on the other hand.
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Centurión, Adrianzen Leider Santos, Barreda Ricardo Huihua, Zacarias Jimmy Henry Ordoñez, and Ortega Jorge Ulises Tello. "LOOP “Logística Optima”." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2017. http://hdl.handle.net/10757/622556.
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La competitividad en el mundo empresarial empuja a desarrollar nuevas tecnologías y procesos que permitan atender de forma eficiente y optima a los clientes, entregando productos y servicios de calidad y de manera oportuna. Esta competitividad se ve reducida en las pymes que representan más del 90% de empresas del Perú, principalmente por el nivel de inversión y patrimonio que poseen.
La característica principal de las pymes es que realiza sus ventas de forma directa a sus clientes (punto de negocio físico), por lo cual esperan siempre la visita de los clientes para realizar y formalizar la venta. Sin embargo el 70% de ellas indican que reciben constantemente la solicitud de despacho de mercadería a domicilio. En base al análisis del mercado hemos encontrado una gran oportunidad de negocio el cual consiste en utilizar la tecnología existente con la necesidad de delivery de las pymes.
Nuestra propuesta de solución consiste en el desarrollo de una plataforma virtual que puede ser utilizada desde una PC o un aplicativo móvil, el cual tiene como nombre Loop (Logistica Optima). El modelo de negocio de Loop funciona de interconectar a través de la plataforma a las pymes con transportistas que poseen vehículos con características determinadas para la carga de mercadería (Minivan o Station Wagon), conocer los datos de vehículo, el costo de transporte y la ruta que seguirá hasta llegar con la carga a su destino mediante geolocalización.
Nuestra principal propuesta valor es la seguridad del transporte de mercadería hasta el cliente, conocer los datos de vehículo y el costo de transporte antes de cerrar la operación, posibilidad de hacer seguimiento en línea al transporte y reducción de tiempo para los clientes al tener que movilizarse hasta su proveedor. Nuestra proyección de ingresos se estima en cerrar el año
1 con 15,600 servicios mensuales, el cual nos arroja un ingreso anual de S/ 550 368 finalizando el año 2 y de S/ 637 117 hacia el fin del proyecto.
La inversión necesaria para implementar el negocio es de S/. 197,505, con una participación de 48.56% de financiamiento bancario a un plazo de 5 años. El análisis financiero arroja números bastante atractivos para la operatividad del proyecto, con una TIR inversionista
42.03%, payback de 3.12 años y un índice de rentabilidad de 1.78%, la tasa de descuento del proyecto equivale a 12.02%.
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Schrempp, Mark. "Tracking loop design." Thesis, Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/1363.
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Bianchi, Eugenio. "Loop Quantum Gravity." Doctoral thesis, Scuola Normale Superiore, 2010. http://hdl.handle.net/11384/85828.
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Aakre, Thor Davis. "A resource constrained loop pipelining technique for perfectly-nested loop structures." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA273402.
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Jalkh, Pierre E. (Pierre Edovard). "Open loop and closed loop cup forming of aluminum sheet metals." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/35953.
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Ferrari, Dione Jonathan. "Aplicação de Loop Pipelining e Loop Unrolling à síntese de alto nível." Florianópolis, SC, 2002. http://repositorio.ufsc.br/xmlui/handle/123456789/84476.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciência da Computação.Made available in DSpace on 2012-10-20T09:40:08Z (GMT). No. of bitstreams: 1 188157.pdf: 431174 bytes, checksum: 32f4521af19e9fdd365fc47b62c259a6 (MD5)
Este trabalho tem como objetivo resolver um problema clássico da Síntese de Alto Nível através de uma abordagem orientada à exploração de soluções alternativas. O problema consiste no escalonamento de operações de um dado algoritmo sob restrição de recursos físicos de forma que cada operação é executada respeitando a ordem de precedência imposta pelo algoritmo. Para abordar o problema acima, utilizou-se as técnicas de Loop Pipelining e Loop Unrolling, onde operações de diferentes iterações podem ser executadas em um mesmo estado. Estas técnicas, por exporem mais paralelismo, permitem uma melhor utilização dos recursos. Este trabalho descreve a abordagem proposta, a modelagem que a ampara e a implementação de ferramentas que a suportam (escalonador e paralelizador). São apresentados resultados experimentais obtidos a partir de exemplos clássicos da literatura.
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Sundström, Petra. "Designing Affective Loop Experiences." Doctoral thesis, Stockholms universitet, Institutionen för data- och systemvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-43376.
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There is a lack of attention to the emotional and the physical aspects of communication in how we up to now have been approaching communication between people in the field of Human Computer Interaction (HCI). As designers of digital communication tools we need to consider altering the underlying model for communication that has been prevailing in HCI: the information transfer model. Communication is about so much more than transferring information. It is about getting to know yourself, who you are and what part you play in the communication as it unfolds. It is also about the experience of a communication process, what it feels like, how that feeling changes, when it changes, why and perhaps by whom the process is initiated, altered, or disrupted. The idea of Affective Loop experiences in design aims to create new expressive and experiential media for whole users, embodied with the social and physical world they live in, and where communication not only is about getting the message across but also about living the experience of communication - feeling it. An Affective Loop experience is an emerging, in the moment, emotional experience where the inner emotional experience, the situation at hand and the social and physical context act together, to create for one complete embodied experience. The loop perspective comes from how this experience takes place in communication and how there is a rhythmic pattern in communication where those involved take turns in both expressing themselves and standing back interpreting the moment. To allow for Affective Loop experiences with or through a computer system, the user needs to be allowed to express herself in rich personal ways involving our many ways of expressing and sensing emotions – muscles tensions, facial expressions and more. For the user to become further engaged in interaction, the computer system needs the capability to return relevant, either diminishing, enforcing or disruptive feedback to those emotions expressed by the user so that the she wants to continue express herself by either strengthening, changing or keeping her expression. We describe how we used the idea of Affective Loop experiences as a conceptual tool to navigate a design space of gestural input combined with rich instant feedback. In our design journey, we created two systems, eMoto and FriendSense.
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Guay, Jamie Andrew. "Closed-loop insulin delivery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ60434.pdf.
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Jones, Melvin. "Closed loop performance monitoring." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-04122007-115205.
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Calinescu, Radu C. "Architecture-independent loop parallelisation." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299406.
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Choi, Yoonjoo. "Protein loop structure prediction." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:bd5c1b9b-89ba-4225-bc17-85d3f5067e58.
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This dissertation concerns the study and prediction of loops in protein structures. Proteins perform crucial functions in living organisms. Despite their importance, we are currently unable to predict their three dimensional structure accurately. Loops are segments that connect regular secondary structures of proteins. They tend to be located on the surface of proteins and often interact with other biological agents. As loops are generally subject to more frequent mutations than the rest of the protein, their sequences and structural conformations can vary significantly even within the same protein family. Although homology modelling is the most accurate computational method for protein structure prediction, difficulties still arise in predicting protein loops. Protein loop structure prediction is therefore a bottleneck in solving the protein structure prediction problem. Reflecting on the success of homology modelling, I implement an improved version of a database search method, FREAD. I show how sequence similarity as quantified by environment specific substitution scores can be used to significantly improve loop prediction. FREAD performs appreciably better for an identifiable subset of loops (two thirds of shorter loops and half of the longer loops tested) than ab initio methods; FREAD's predictive ability is length independent. In general, it produces results within 2Å root mean square deviation (RMSD) from the native conformations, compared to an average of over 10Å for loop length 20 for any of the other tested ab initio methods. I then examine FREAD’s predictive ability on a specific type of loops called complementarity determining regions (CDRs) in antibodies. CDRs consist of six hypervariable loops and form the majority of the antigen binding site. I examine CDR loop structure prediction as a general case of loop structure prediction problem. FREAD achieves accuracy similar to specific CDR predictors. However, it fails to accurately predict CDR-H3, which is known to be the most challenging CDR. Various FREAD versions including FREAD with contact information (ConFREAD) are examined. The FREAD variants improve predictions for CDR-H3 on homology models and docked structures. Lastly, I focus on the local properties of protein loops and demonstrate that the protein loop structure prediction problem is a local protein folding problem. The end-to-end distance of loops (loop span) follows a distinctive frequency distribution, regardless of secondary structure elements connected or the number of residues in the loop. I show that the loop span distribution follows a Maxwell-Boltzmann distribution. Based on my research, I propose future directions in protein loop structure prediction including estimating experimentally undetermined local structures using FREAD, multiple loop structure prediction using contact information and a novel ab initio method which makes use of loop stretch.
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Elfving, Maria. "Hydraulic closed loop control." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-234932.
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The purpose of the thesis work is to investigate methods for closedloop control of hydraulic pressure in transmissions to make them bemore precise. This is desirable since it decreases the fuel consumptionas well as emissions, and improves the driving performance.To be able to study the behaviour of the transmission, a Simulink modelis designed with the parts relevant to the problem, and from this a linearmodel is obtained. Three different controllers are designed andimplemented in the Simulink model, to compare and analyze differentsolutions. The controllers implemented are a PI controller, a PIDcontroller and a LQR controller.The results from the simulation with the different controllers showstep responses to be able to evaluate their individual performance. Theresults show that all of the controllers meet the requirements for a stepreponse under better conditions, but under worse ones the LQR controllerperforms best of the three. The LQR controller is therefore themost suitable of the three controllers for this particular problem.Syftet med det här examensarbete är att undersöka olika metoder för återkopplad reglering av hydrauliskt tryck i en transmission för att göra det mer exakt. Detta är önskvärt eftersom det minskar bränsleåt- gången och utsläpp, och gör även körupplevelsen bättre. För att kunna studera transmission tas en Simulink-modell fram in- nehållande de delar som är relevanta för problemet, och från detta kan en linjär modell erhållas. Tre olika regulatorer tas fram och im- plementeras i Simulink-modellen, för att kunna jämföra och analysera de olika lösningarna. De regulatorer som tas fram är PI-regulator, PID- regulator och LQR-regualator. Resultaten från simuleringen med de olika regulatorerna visar stegs- var under varierande förutsättningar för att kunna utvärdera hur de presterar. Resultaten visar att alla regulatorer uppfyller kraven på ett stegsvar under bättre förhållanden, men LQR-regulatorn presterar bäst under svårare förhållanden. LQR-regulatorn är därför den mest relevanta reglerstrategin för det här problemet av de tre
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Abrahamsson, Johan. "Loop impedance measurement tool." Thesis, Linköpings universitet, Fysik och elektroteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-169109.
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This master´s thesis presents a prototype of a hand-held measurement tool used to measure the loop impedance of ground loops using two current probes. This tool allows the user to find bad shield connections in a system without disconnecting the shielded cables. The thesis explains the theory behind the measurement method, hardware requirements and design, how the software works and a demonstration of the implemented graphical user interface. The tool is powered by a two-cell lithium-ion battery and has an integrated battery charger with cell balancing.
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Kim, Jeong I. "Log-Periodic Loop Antennas." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/34392.
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The Log-Periodic Loop Antenna with Ground Reflector (LPLA-GR) is investigated as a new type of antenna, which provides wide bandwidth, broad beamwidth, and high gain. This antenna has smaller transverse dimensions (by a factor of 2/pi) than a log-periodic dipole antenna with comparable radiation characteristics. Several geometries with different parameters are analyzed numerically using ESP code, which is based on the method of moments. A LPLA-GR with 6 turns and a cone angle of 30* offers the most promising radiation characteristics. This antenna yields 47.6 % gain bandwidth and 12 dB gain according to the numerical analysis. The LPLA-GR also provides linear polarization and unidirectional patterns.
Three prototype antennas were constructed and measured in the Virginia Tech Antenna Laboratory. Far-field patterns and input impedance were measured over a wide range of frequencies. The measured results agree well with the calculated results. Because of its wide bandwidth, high gain, and small size, the LPLA is expected to find applications as feeds for reflector antennas, as detectors in EMC scattering range, and as mobile communication antennas.
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Sundström, Petra. "Exploring the Affective Loop." Licentiate thesis, SICS, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-21013.
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Research in psychology and neurology shows that both body and mind are involved when experiencing emotions (Damasio 1994, Davidson et al. 2003). People are also very physical when they try to communicate their emotions. Somewhere in between beings consciously and unconsciously aware of it ourselves, we produce both verbal and physical signs to make other people understand how we feel. Simultaneously, this production of signs involves us in a stronger personal experience of the emotions we express. Emotions are also communicated in the digital world, but there is little focus on users' personal as well as physical experience of emotions in the available digital media. In order to explore whether and how we can expand existing media, we have designed, implemented and evaluated /eMoto/, a mobile service for sending affective messages to others. With eMoto, we explicitly aim to address both cognitive and physical experiences of human emotions. Through combining affective gestures for input with affective expressions that make use of colors, shapes and animations for the background of messages, the interaction "pulls" the user into an /affective loop/. In this thesis we define what we mean by affective loop and present a user-centered design approach expressed through four design principles inspired by previous work within Human Computer Interaction (HCI) but adjusted to our purposes; /embodiment/ (Dourish 2001) as a means to address how people communicate emotions in real life, /flow/ (Csikszentmihalyi 1990) to reach a state of involvement that goes further than the current context, /ambiguity/ of the designed expressions (Gaver et al. 2003) to allow for open-ended interpretation by the end-users instead of simplistic, one-emotion one-expression pairs and /natural but designed expressions/ to address people's natural couplings between cognitively and physically experienced emotions. We also present results from an end-user study of eMoto that indicates that subjects got both physically and emotionally involved in the interaction and that the designed "openness" and ambiguity of the expressions, was appreciated and understood by our subjects. Through the user study, we identified four potential design problems that have to be tackled in order to achieve an affective loop effect; the extent to which users' /feel in control/ of the interaction, /harmony and coherence/ between cognitive and physical expressions/,/ /timing/ of expressions and feedback in a communicational setting, and effects of users' /personality/ on their emotional expressions and experiences of the interaction.
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Wong, Muk-Yan. "The Mood-Emotion Loop." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337265201.
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Fernandes, Pereira Sonia, and Nejat Hamid. "Closed-Loop Orchestration Solution." Thesis, KTH, Hälsoinformatik och logistik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-253005.
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Computer networks are continuously evolving and growing in size and complexity. New technologies are being introduced which further increases the complexity. Net- work Service Orchestration is all about pushing configuration out into the network devices automatically without human intervention. There can be issues that causes the orchestration to fail. In many cases manual operations must be done to recover from the error which is very contradicting since the goal of orchestration is that it should be fully automated. There is some indication that the errors that are being solved manually could be de- tected and handled by a feedback mechanism. This thesis work aimed to build on current insight and if possible, verify that the feedback mechanism is a viable method. After consideration on different ways to solve the research question, the choice fell on creating a test environment where the approach was tested. The test environment was used to investigate if a network orchestration system could be integrated with a feedback mechanism. The result of this project presents a way to automatically de- tect a network failure and send feedback to a Network Service Orchestrator. The or- chestrator is then able to identify and correct the error.Datornätverk utvecklas kontinuerligt och växer i storlek och komplexitet. Nyteknik införs som ytterligare ökar komplexiteten. Nätverksservice orkestrering handlar om att skicka ut konfiguration automatiskt till enheter i nätverket utan mänsklig in- blandning. Det kan finnas problem som gör att orkestreringen misslyckas. I många fall måste manuella åtgärder utföras för att lösa problemet, vilket är mycket motsä- gelsefullt, eftersom målet med orkestrering är att det ska vara fullt automatiserat. Det finns indikationer på att fel kan detekteras och hanteras av en återkopplings- mekanismen. Detta examensarbete syftar till att bygga på aktuell insikt, och om möj- ligt, verifiera att återkopplingsmekanismen är en möjlig metod. Efter överväganden på vilka olika sätt som projektmålet kunde uppnås föll valet på att skapa en testmiljö där ansatsen kunde testas. Testmiljön användes för att utreda om ett nätverksorkestreringssystem kan integreras med en återkopplings mekanism. Resultat av projektet presenterar ett sätt att automatiskt upptäcka ett nätverksfel och skicka återkoppling till ett nätverksorkestreringssystem. Nätverksorkestreraren kan sedan detektera och åtgärda felet.
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Fernández, Fuentes Narcís. "Classification of loops in protein structures: applications on loop modeling and protein function." Doctoral thesis, Universitat Autònoma de Barcelona, 2004. http://hdl.handle.net/10803/3516.
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Aquesta tesis esta estructurada en cinc capítols. Al capítol I, es fa una introducció als llaços, el subjecte d'estudi d'aquesta tesis. A més, es fa una petita introducció a les bases de dades biològiques de us corrent i de protocols bio-informàtics en comparacions de seqüències. Del capítol II al IV s'explora el paper que els llaços juguen a les proteïnes utilitzant un enfocament bio-informàtic, es realitza una classificació estructural de llaços (capítol II); es realitza un estudi per inferir relacions d'estructura i funció (capítol III) i es realitza un estudi de predicció d'estructura de llaços (capítol IV). Finalment al capítol V es presenten unes consideracions finals al treball realitzat i es proposen futures extensions al mateix.El treball realitza per el Dr. Oliva ha sigut el punt d'inici d'aquesta tesis. Al capítol II es presenta un procés totalment automatitzat de classificació estructural de llaços de proteïnes quinases. Diferent millores varen ser introduïdes al treball original del Dr. Oliva: (i) un nou procés de reagrupació que evita els solapament entre agrupacions de llaços, (ii) un servidor web que permet l'accés i recerca de dades sobre els llaços classificats a través de internet, (iii) referències creuades amb altre bases de dades important. El capítol III es centra en dues qüestions bàsiques: la conservació de la estructura dels llaços i la seva funció i la conservació de la estructura dels llaços i la seva relació amb l'evolució. Un extensiu estudi sobre una classificació estructural de llaços de proteïnes quinases va ser realitzat. El motiu pe el quan les quinases varen ser escollides com a subjecte d'estudi es degut a la seva importància biològica i perquè hi ha molta informació disponible a la literatura. Finalment al capítol IV s'estudia la aplicabilitat de les classificacions estructurals de llaços en el camp de la predicció d'estructura. Es va realitzat un test de validació (Jack-knife test) per provar la utilitat de la informació de la seqüència en forma de perfils de les agrupacions estructurals de llaços.
This thesis is structured into five chapters. In chapter I, protein loops - the topics of this thesis work - are introduced. Also, a short description of biological databases and current protocols in sequence comparison are given. Chapters II to IV explore a major role that loop segments play in protein structures by using a structural bio-informatics approach: (i) the structural classification (ii) the relationship between the structure and function and (iii) the structure prediction of loops. The conclusive chapter V is devoted to several considerations that complement the conclusions given in previous chapters. Extensions of this thesis work are also suggested.
The research project on structural classification of loops, which was carried out by Dr. Oliva (Oliva et al. 1997), has been the starting point for all the other subsequent projects. In chapter II, a fully automated process for the structural classification of loops of kinases is presented. Several methodological improvements were made on the basis of Oliva's original work: (i) a newly introduced re-clustering process allows to avoid overlaps in classified loop clusters, (ii) a new web server was established to provide access and/or to query data through the internet, and (iii) cross referencing links were introduced with other biological databases. Chapter III focuses on two questions: the conservation of loop structures and functions and the extent of conservation of loop structures during evolution. An extensive analysis of a structural loop database of protein kinases was carried out. There are two main reasons why kinases were selected for the subject of this study: first, their critical biological relevance, and second the vast amount of functional information available in the literature and biological databases. Finally, in chapter IV, we apply ArchDB(Espadaler et al. 2004) for loop structure prediction. A Jack-knife test is performed to assess the usefulness of sequence information, which is included in the form of profiles in our structural clusters.
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Lee, Ho. "Evaluation of the performance of loop detectors and freeway performance measurement from loop detectos." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1413381609.
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Neelisetty, Srikanth. "Detector Diagnostics, Data Cleaning and Improved Single Loop Velocity Estimation from Conventional Loop Detectors." The Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1419350524.
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Larsen, Kasper J. "Maximal Unitarity at Two Loops : A New Method for Computing Two-Loop Scattering Amplitudes." Doctoral thesis, Uppsala universitet, Teoretisk fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-179203.
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The study of scattering amplitudes beyond one loop is necessary for precision phenomenology for the Large Hadron Collider and may also provide deeper insights into the theoretical foundations of quantum field theory. In this thesis we develop a new method for computing two-loop amplitudes, based on unitarity rather than Feynman diagrams. In this approach, the two-loop amplitude is first expanded in a linearly independent basis of integrals. The process dependence thereby resides in the coefficients of the integrals. These expansion coefficients are then the object of calculation. Our main results include explicit formulas for a subset of the integral coefficients, expressing them as products of tree-level amplitudes integrated over specific contours in the complex plane. We give a general selection principle for determining these contours. This principle is then applied to obtain the coefficients of integrals with the topology of a double box. We show that, for four-particle scattering, each double-box integral in the two-loop basis is associated with a uniquely defined complex contour, referred to as its master contour. We provide a classification of the solutions to setting all propagators of the general double-box integral on-shell. Depending on the number of external momenta at the vertices of the graph, these solutions are given as a chain of pointwise intersecting Riemann spheres, or a torus. This classification is needed to define master contours for amplitudes with arbitrary multiplicities. We point out that a basis of two-loop integrals with as many infrared finite elements as possible allows substantial technical simplications, in terms of obtaining the coefficients of the integrals, as well as for the analytic evaluation of the integrals themselves. We compute two such integrals at four points, obtaining remarkably compact expressions. Finally, we provide a check on a recently developed recursion relation for the all-loop integrand of the amplitudes of N=4 supersymmetric Yang-Mills theory, examining the two-loop six-gluon MHV amplitude and finding agreement. The validity of the approach to two-loop amplitudes developed in this thesis extends to all four-dimensional gauge theories, in particular QCD. The approach is suited for obtaining compact analytical expressions as well as for numerical implementations.
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Loop, Susanne. "Analysen zum nukleozytoplasmatischen Transport von Regulatorproteinen des circadianen Rhythmus." Doctoral thesis, [S.l.] : [s.n.], 2004. http://webdoc.sub.gwdg.de/diss/2004/loop/loop.pdf.
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SERGEEV, Armen. "KÄHLER GEOMETRY OF LOOP SPACES." 名古屋大学多元数理科学研究科, 2008. http://hdl.handle.net/2237/12240.
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Khosrovani, Sara. "Electrophysiology of the olivocerebellar loop." [S.l.] : Rotterdam : [The Author] ; Erasmus University [Host], 2008. http://hdl.handle.net/1765/12220.
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Wittke, Andreas. "CloudBooks - LOOP ein neues Autorentool." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-126186.
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Im E-Learning-Bereich gewinnt die technische Anforderung, mit mobilen Endgeräten auf Lerninhalte zugreifen zu können, zunehmend an Bedeutung. Ein zentraler Online-Speicherort, von dem die Inhalte – optimiert für das jeweilige Endgerät – bereitgestellt und verändert werden können, ist zur Erfüllung dieser Anforderung elementar. (...)
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Dhirani, Al-Amin. "Loop integrals containing large masses." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60019.
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The main purpose of this thesis is to investigate a method for estimating loop integrals containing large masses. Working in Feynman parameter space, the method consists of determining the regions of integration that give the dominant contributions. The method is applied to some integrals that have been worked out in the literature, and it is found that the method can be simple to apply. The percent difference between the approximate and exact results using masses consistent with the Standard Model is typically roughly 30%. Also given are general formulae for arbitrary convergent and divergent one loop integrals with the external momenta set equal to zero.
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Miscione, Steven. "Loop algebras and algebraic geometry." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=116115.
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This thesis primarily discusses the results of two papers, [Hu] and [HaHu]. The first is an overview of algebraic-geometric techniques for integrable systems in which the AKS theorem is proven. Under certain conditions, this theorem asserts the commutatvity and (potential) non-triviality of the Hamiltonian flow of Ad*-invariant functions once they're restricted to subalgebras. This theorem is applied to the case of coadjoint orbits on loop algebras, identifying the flow with a spectral curve and a line bundle via the Lax equation. These results play an important role in the discussion of [HaHu], wherein we consider three levels of spaces, each possessing a linear family of Poisson spaces. It is shown that there exist Poisson mappings between these levels. We consider the two cases where the underlying Riemann surface is an elliptic curve, as well as its degeneration to a Riemann sphere with two points identified (the trigonometric case). Background in necessary areas is provided.
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Mantzaridis, Haralmbos. "Closed-loop control of anaesthesia." Thesis, University of Strathclyde, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338938.
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Benbow, S. M. P. "Modelling the dimethysulphide feedback loop." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293752.
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Narashimhamurthy, Chetan. "Phase Locked Loop using LABVIEW." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-82408.
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The phase-locked loop is an important concept in the field of wireless communication. PLL:s have wide-ranging applications in many electronic circuits. The history and the basic principle of the phase-locked loop are discussed. The different building blocks and their roles are also described along with some of the major applications ofphase-locked loops. The thesis mainly describes how to build a phase-locked loop circuit using LabVIEW, as a laboratory experiment intended for a course in Radio Engineering. It was previously implemented in PSpice and this is described for comparison. The basic functions and features of LabVIEW are discussed. The primary circuit of a phase-locked loop is constructed in LabVIEW and its characteristics are noted. Some conclusions are drawn and future work on this phase-locked loop circuit using LabVIEW is suggested.
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Harper, Marc. "Efficiency of small loop antennas." Thesis, University of Surrey, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.548346.
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The present dissertation deals with electrically small loop antennas, namely antennas which are small compared to the wavelength. The. single turn loop antenna is an effective `small' transmitting antenna. Small being defined as having a maximum physical dimension, which is less than the wavelength of operation. Electrically small antennas are those whose overall length is less than one-sixth of a wavelength. Most applications of loop antennas are in the HF (3-30 MHz) VHF (30-300 MHz) and UHF (300-3000 MHz) bands. The fundamental limitations, namely the antenna Q, of small antennas derived in the past by several authors, are reviewed and unified, yielding simple formulae for both the antenna Q and bandwidth of an antenna as a function of its size. This theoretical work enables us to understand deeply the physical phenomena occurring in small antennas, such as the importance of the stored reactive energy or the increase of losses when an antenna is miniaturised. An important point regarding electrically small antennas is that their performance is closely related to their electrical size. The product of the bandwidth and the gain is a function of the size of the antenna, so that the gain can only be increased at the expense of the bandwidth, and vice versa. Furthermore, an electrically small antenna is highly dependent on the environment in which the antenna operates, which must be taken into account. The environment comprises both the device on which the antenna is mounted and the surroundings This thesis describes a technique to determine the radiation efficiency of an electrically small antenna, primarily by measuring the radiation Q of the antenna at the input terminals at a number of frequencies. This is called the Q-bandwidth method. From this all antenna mode radiation resistances, the antenna loss resistances, the antenna efficiency, and input impedance can all be derived from the measurements. The results show that traditional formulas for antenna Q and radiation resistance do not predict what is measured in the laboratory or in the field. The measurements show that the fundamental formula for electrically small antennas has been breached.Furthermore thermal heat balance and field strength measurements are used to confirm the Q-bandwidth method. Computer simulation in general agrees with current theory but not with the measurements as the current theory does not predict the extra radiation modes described in this thesis. This thesis addresses some of the discrepancies.
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Ugurdag, Hasan Fatih. "Various perspectives of loop pipelining." Case Western Reserve University School of Graduate Studies / OhioLINK, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=case1061833352.
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Flores-Lozada, Juan G. "Copper Micro-channel Loop Thermosyphon." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1258142744.
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Gaska, Benjamin James, and Benjamin James Gaska. "ParForPy: Loop Parallelism in Python." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/625320.
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Scientists are trending towards usage of
high-level programming languages such as Python.
The convenience of these languages often have a performance cost.
As the amount of data being processed increases this can make using
these languages unfeasible.
Parallelism is a means to achieve better performance, but many
users are unaware of it, or find it difficult to work with.
This thesis presents ParForPy, a means for loop-parallelization to to simplify usage of parallelism in Python for users.
Discussion is included for determining when parallelism
matches well with the problem.
Results are given that indicate that ParForPy is both capable
of improving program execution time and perceived to be a simpler
construct to understand than other techniques for parallelism in Python.
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Pacheco, Rui. "Harmonic maps and loop groups." Thesis, University of Bath, 2004. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404621.
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Vanichsriratana, Wirat. "Optimal control of fed-batch fermentation processes." Thesis, University of Westminster, 1996. https://westminsterresearch.westminster.ac.uk/item/94908/optimal-control-of-fed-batch-fermentation-processes.
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Optimisation of a fed-batch fermentation process typically uses the calculus of variations or Pontryagin's maximum principle to determine an optimal feed rate profile. This often results in a singular control problem and an open loop control structure. The singular feed rate is the optimal feed rate during the singular control period and is used to control the substrate concentration in the fermenter at an optimal level. This approach is supported by biological knowledge that biochemical reaction rates are controlled by the environmental conditions in the fermenter; in this case, the substrate concentration. Since an accurate neural net-based on-line estimation of the substrate concentration has recently become available and is currently employed in industry, we are therefore able to propose a method which makes use of this estimation. The proposed method divides the optimisation problem into two parts. First, an optimal substrate concentration profile which governs the biochemical reactions in the fermentation process is determined. Then a controller is designed to track the obtained optimal profile. Since the proposed method determines the optimal substrate concentration profile, the singular control problem is therefore avoided because the substrate concentration appears nonlinearly in the system equations. Also, the process is then operated in closed loop control of the substrate concentration. The proposed method is then called "closed loop optimal control". The proposed closed loop optimal control method is then compared with the open loop optimal feed rate profile method. The comparison simulations from both primary and secondary metabolite production processes show that both methods give similar performance in a case of perfect model while the closed loop optimal control provides better performance than the open loop method in a case of plant/model mismatch. The better performance of the closed loop optimal control is due to an ability to compensate for the modelling errors using feedback.
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Fili, Thomas. "Studio, implementazione e test di phase-locked loops per segnali "open loop" da sonde interplanetarie." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14372/.
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La tesi tratta di studio, test ed implementazione di Phase-Locked Loops, ovvero sistemi di controllo automatico il cui obiettivo è rigenerare segnali di telecomunicazione di input soggetti a jitter di fase.
Dalla definizione delle trasformate di Laplace del controllore si passa all'implementazione delle analoghe equazioni in tempo discreto (z-transform) in Matlab & Simulink per studiare il comportamento di questi sistemi con segnali sintetici e reali (provenienti dalla sonda Juno).
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Wu, Chia-Ying (Charles). "Musical and Dramatic Functions of Loops and Loop Breakers in Philip Glass's Opera The Voyage." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849734/.
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Philip Glass's minimalist opera The Voyage commemorates the 500th Anniversary of Christopher Columbus's discovery of America. In the opera, Philip Glass, like other composers, expresses singers' and non-singers' words and activities by means of melodies, rhythms, chords, textures, timbres, and dynamics. In addition to these traditional musical expressions, successions of reiterating materials (RMs, two or more iterations of materials) and non reiterating materials (NRMs) become new musical expressions. However, dividing materials into theses two categories only distinguishes NRMs from RMs without exploring relations among them in successions. For instance, a listener cannot perceive the functional relations between a partial iteration of the RM and the NRM following the partial RM because both the partial RM and the NRM are NRMs. As a result, a listener hears a succession of NRM followed by another NRM. When an analyst relabels the partial RM as partial loop, and the NRM following the partial RM as loop breaker, a listener hears the NRM as a loop breaker causing a partial loop. The musical functions of loops and loop breakers concern a listener's expectations of the creation, sustaining, departure, and return to the norm in successions of loops and loop breakers. When a listener associates the satisfaction and dissatisfaction of these expectations with dramatic devices such as incidents, words in dialogues and soliloquies, and activities by singers and non-singers, loops and loop breakers in successions become dramatically functional. This dissertation explores the relations among musical and dramatic functions of loops and loop breakers in Glass's musical commemoration of Columbus.
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Decker, Marvin Glen. "Loop spaces in motivic homotopy theory." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1808.
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Massaro, Daniele. "Loop-induced annihilation of dark matter." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19428/.
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Plenty of evidences suggest the existence of a new type of non-luminous matter in the Universe, that has been called dark matter. Its nature is still unresolved, however, there is a widespread belief that is a new particle. Today we have three important search strategies for dark matter: indirect detection, direct detection and collider searches. In this thesis we focus on indirect detection, which investigates the products of annihilation of dark matter in overdense regions of the Universe. In particular we focus on gamma-ray observations, considering the gamma-ray line signal, arising from dark matter annihilation into a pair of monochromatic photons. For electrically neutral dark matter, this process can proceed only via loop diagrams. Its computation can be done using numerical techniques. Numerical tools are a huge step forward in the dark matter research, and help scientists to make predictions and improve their models. However, at the current status there is no tool allowing for the calculation of loop-induced gamma-ray signals for arbitrary models. In this thesis we make an important step towards filling this gap. We focus on the numerical tool MadDM, and we validate the feature of automatised loop-induced computation using two dark matter models: the singlet scalar Higgs portal model and a simplified top-philic model. We then constrain the parameter space of these models using the current experimental results. In particular we consider the upper limits on gamma-ray line searches obtained by Fermi-LAT and HESS collaborations, finding that they provide important constraints on the parameters of both models.
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Chang, Ku Nien, and 張谷年. "Increasing parallelism of loops with the loop distribution technique." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/92216626125470294084.
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碩士國立中山大學
應用數學研究所
83
Most algorithms can be written in the form of nested loops. In a loop, the parallelism is bad when the statements in the loop body are involved in a data-dependence cycle. How to break data- dependence cycles is an important issue for increasing the parallelism of loop execution. We mainly consider the data-dependence relation in the viewpoint of statements. We propose two new methods to get better parallelism and performance than the index shift method in general. One is called the modified index shift method, and the other is called the substitution-shift method. The modified index shift method modify the index shift method and combine with the loop distribution method. The statement substitution-shift method combined the statement substitution method, the index shift method, the unimodular transformation method, with the loop distribution method. Moreover, the activity on vertex (AOV) network approach and the topological sort are applied to sort the tatements for the parallel execution order.
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Kuan, Ting-Kuei, and 管挺貴. "Automatic Loop Gain Optimization for Digital Phase-Locked Loops." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/36408606089394812217.
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博士國立臺灣大學
電子工程學研究所
103
Since 1930s, phase-locked loops (PLLs) have been widely employed in radio, telecommunications, computers and other electronic devices. Specifically, they can be used to generate well-timed clocks for a variety of applications such as clock and data recovery (CDR), microprocessor clock generation, and wireline transmitters. In designing the PLLs, fundamental but quite important questions always arise: “What is the optimal loop gain for a PLL system to achieve the best jitter performance?” and “Can this optimal loop gain be automatically attained in background to tolerate process and environment variations?” Unfortunately, the theory of the automatic loop gain optimization technique has not been revealed so far. This thesis presents the theory and the practice of the automatic loop gain optimization technique for digital PLLs (DPLLs) to breakthrough that traditional barrier. The DPLLs are often classified into two types with respect to their phase detector: a time-to-digital converter (TDC) or a bang-bang phase detector (BBPD), and this thesis will discuss both two types in two chapters. Chapter 1 highlights the contributions of this thesis to the world. Chapter 2 demonstrated the loop gain optimization technique for TDC-based DPLLs. Chapter 3 demonstrated the loop gain optimization technique for digital bang-bang PLLs (DBPLLs). In addition, the gain of the nonlinear BBPD is derived, taking into account the external and the internal noise sources simultaneously (different from the conventional approach). The multi-rate noise model is constructed to investigate the cyclostationary phenomenon of the PLLs, which reveals undisclosed secrets. A DBPLL using the automatic loop gain optimization and the loop latency reduction techniques is implemented. The chip was fabricated in TSMC 40nm CMOS Technology. Finally, the conclusion and the future work are drawn in Chapter 4.
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Huang, Yi-Zhen, and 黃怡貞. "Low-Jitter Dual-Loop Nested Delay-Locked Loop." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/13319664707199253337.
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碩士華梵大學
機電工程研究所
90
This thesis describes a dual-loop nested delay-locked loop (DLL), which is different from the conventional one. Nested topology architecture achieves low-jitter performance. The dual-loop DLL for skew-free distribution of clocks, can generate equally spaced time for the duty-cycle adjustment. Comparing with the conventional one, the proposed DLL keeps the same benefits of conventional DLL’s such as good jitter performance. In this thesis, the voltage-controlled delay line (VCDL) achieves wide-range operation with little gain variation. The chip has been fabricated with TSMC 0.35-mm 1p4m N-well CMOS process. When the supply voltage is 3.3V, over the operating frequency range of 100~300MHz, the measured rms and peak-to-peak jitter are less than 5.8ps and 58ps, respectively. When the input clock is 300MHz, the power dissipation of the circuit is 41mw.
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Lee, Wen Hsuan, and 李玟萱. "Wire Sag Study of Q-loop、S-loop and M-loop Bonds on Semiconductor Packaging." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/p7b7fm.
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碩士正修科技大學
機電工程研究所
102
In semiconductor industry, they are looking forward to replacing the using of gold wire in the IC packaging due to the on-going rise of gold raw material. Owing the stability and reliability considerations, the substitutes are still inferior to gold wire. Therefore how to improve product yields and reduce costs in semiconductor industry is an important concern. In recent years, with the demands of lighter, smaller and multi-functions of electronic products, the design of Multi-Chip Module and 3-Dimensional Package in IC packaging technology is becoming very popular.For any 3-Dimensional and Multi-Chip Module layout, the direction of epoxy compound flow may not be constrained to line along the leadframe plane,owing to the layout structure of the chips. The excessive wire sag often results in crosstalk or shorting of the bond wires of the upper and lower layers.In a packaging, different layers of wire bond loops (Q-loop, S-loop and M-loop), subjected to varying amounts of drag force, can result in wire sweep and wire sag differences. This may increase the possibility of wire shorts and chips failure. Therefore, the aim of this study is to provide a systematic method to perform numerical analysis for 3-dimensional and multi-chip module (MCM) in electronic packaging by considering wire sweep and wire sag control.
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YANG, ZHAO-HUA, and 楊兆華. "Stabilizingmagamp control loop by using an inner-loop compensation." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/37466461879217403288.
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博士國立臺灣大學
電機工程研究所
79
A magamp post regulator is often the preferred choice for many high performance multi-output power supply applications. The majou attraction of magamp is that the voltages of high-current multi-output supply can be independently regulated with efficiency and reliability. One of the majou task in the design of the magamp regulators is to compensate the control loop to achieve loop stability and regulation performance. In the conventional compensation scheme, the opennormally with resonance peaking. To make things worse, the resonance frequency, in some magamps, is sensitive to the parameter variation of the saturable reactor and line-load condition. Compensation of the magamp control circuit, therefore, become rather annoying. The resultant loop performance is sensitive to circuit parameter changes. The major parameter variations are the ESR of the output filter capacitor, the inductance of the choke and the permeability of the saturable reactor. To rectify this situation, a nwe compensation scheme is proposed in this paper. By using this nwe scheme, Inner loop compensation the open loop transfer function is reduced from second order to first order, therefore the resonance peaking phenomenon is eliminated. If properly designed, the propoed scheme is capable of making the resultant loop gain essentially independent of the power circuit parameters. 在眾多高性能，多組輸出之切換式電源供應系統中，以磁放大器做為後置穩壓器是最 受歡迎的一種選擇。其最人矚目的優點，是能以高可靠度，高效率進行各別獨立受穩 壓之高功率輸出。 設計磁放大穩壓器最主要工作在於補償控制迴路，以達到迴路穩定及穩壓功能。在傳 統補償上，開迴路轉移函數是個具有諧振峰化的二階函數，因此磁放大器本身的參數 及輸出負載改變，對諧振頻率有很大的影響，所以對補償磁放大器控制電路，產生相 當大的困擾。其結果導致電路參數的改變對迴路功能影響頗深。而其中又以輸出電容 上的串聯等效電阻，扼流圈電感量及磁放大器本身平均導磁係數最常改變。 為了改善上述情形，本論文提出一項嶄新補償方式一內迴路補償。所以就使開迴路轉 換函數由二階降至一階，因此諧振峰化現象即被消除。若再經由適當設計，也可能使 迴路增益不受電路參數影響。
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Danesh, Pour Nima. "Control loop performance assessment with closed-loop subspace identification." Master's thesis, 2009. http://hdl.handle.net/10048/519.
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Thesis (M. Sc.)--University of Alberta, 2009.Title from PDF file main screen (viewed on Aug. 25, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Process Control, Department of Chemical and Materials Engineering, University of Alberta." Includes bibliographical references.
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Liang, Hsuan-Yu, and 梁軒瑜. "A 2.4GHz Ultra-wide Loop Bandwidth Phase-locked Loop." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/wymwr5.
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XIE, FU-XIONG, and 謝富雄. "Loop shaping for multivariable system based on loop transfer recovery." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/64643704309446603944.
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"Loop the Tape." Texas Christian University, 2008. http://etd.tcu.edu/etdfiles/available/etd-05012008-084054/.
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