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1
Sinha, Siddhant. "Street-side parallels : Bombay : contestation of everyday life with order." Virtual Press, 2007. http://liblink.bsu.edu/uhtbin/catkey/1365785.
Повний текст джерелаАнотація:
If there is anything that challenges a discussion about architecture, it would be defining architecture. It is too broad a subject to construct any particular opinion and follow on, even while attempting to create an understanding of it at the level within graduate program. For me, in a way, architecture has constantly re-constructed its character and impression, and that by itself becomes its permanent trait vis-a-vis a given place and time. But, it also subtly shifts its prominence from being an object to being an experience, from being permanent to being ephemeral or from being a summation to being a subtraction. At this moment, my pursuit of understanding architecture lies in its subtraction or absence from a collage of variables that compose everyday life.Revisiting Bombay's busy streets after spending a considerable amount of time in the United States was a familiar experience for me, but it quickly helped me recognize and acknowledge constituents of my everyday living (associated with the events of the city) that were immediately subtracted while living in the West. An everyday experienceassociated with the city, like the vending stalls, convenience stores, songs, noise, people, etc. could not be found in cities I visited in the U.S. All these experiences such as eating at food stalls and having a cup of tea on the street-side, buying electronics and latest music albums from a make-shift stall assembled from pieces of wooden planks; or simply walking on the street-side as if it were never a side walk but a festival of attainable consumerism - collectively form an event that is embedded in Bombay's urbanism. Herein, I chose to get up-close with the actors and their created spaces and interview them in order to gain insights into the totality of making a living on the street-side. Additionally, in order to extend my knowledge of architecture, I designed a vending stall that both acknowledges the worlds of the street-side and vendors, even as it is informed by my training as an architect.I am challenged as a graduate student to consider architecture within the context of my everyday life. A whole new dimension of space (of ad-hoc and tactical nature) that has always been there, gradually and randomly shaping my relationship with the city's streets while challenging the order of the city. Although invisibly present all the time, this study has made me more aware of its influence. Hence, I have tried to readdress everyday life on the street-sides within the local and global settings of Bombay, studying events and people associated with it. Looking for a probable architecture on the street-sides of Bombay within the boundaries of the quotidian and the modem realities becomes my thesis.Department of Architecture
2
Popovic, Marko. "Application of the Entropy Concept to Thermodynamics and Life Sciences: Evolution Parallels Thermodynamics, Cellulose Hydrolysis Thermodynamics, and Ordered and Disordered Vacancies Thermodynamics." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6996.
Повний текст джерелаАнотація:
Entropy, first introduced in thermodynamics, is used in a wide range of fields. Chapter 1 discusses some important theoretical and practical aspects of entropy: what is entropy, is it subjective or objective, and how to properly apply it to living organisms. Chapter 2 presents applications of entropy to evolution. Chapter 3 shows how cellulosic biofuel production can be improved. Chapter 4 shows how lattice vacancies influence the thermodynamic properties of materials. To determine the nature of thermodynamic entropy, Chapters 1 and 2 describe the roots, the conceptual history of entropy, as well as its path of development and application. From the viewpoint of physics, thermal entropy is a measure of useless energy stored in a system resulting from thermal motion of particles. Thermal entropy is a non-negative objective property. The negentropy concept, while mathematically correct, is physically misleading. This dissertation hypothesizes that concepts from thermodynamics and statistical mechanics can be used to define statistical measurements, similar to thermodynamic entropy, to summarize the convergence of processes driven by random inputs subject to deterministic constraints. A primary example discussed here is evolution in biological systems. As discussed in this dissertation, the first and second laws of thermodynamics do not translate directly into parallel laws for the biome. But, the fundamental principles on which thermodynamic entropy is based are also true for information. Based on these principles, it is shown that adaptation and evolution are stochastically deterministic. Chapter 3 discusses the hydrolysis of cellulose to glucose, which is a key reaction in renewable energy from biomass and in mineralization of soil organic matter to CO2. Conditional thermodynamic parameters, ΔhydG', ΔhydH', and ΔhydS', and equilibrium glucose concentrations are reported for the reaction C6H10O5(cellulose) + H2O(l) ⇄ C6H12O6(aq) as functions of temperature from 0 to 100°C. Activity coefficients of aqueous glucose solution were determined as a function of temperature. The results suggest that producing cellulosic biofuels at higher temperatures will result in higher conversion. Chapter 4 presents the data and a theory relating the linear term in the low temperature heat capacity to lattice vacancy concentration. The theory gives a quantitative result for disordered vacancies, but overestimates the contribution from ordered vacancies because ordering leads to a decreased influence of vacancies on heat capacity.
3
Musacchio, Pierfrancesco. "La réception de la Vie de Marius de Plutarque dans la culture gréco-latine du IIe au Ve siècle après J.-C." Electronic Thesis or Diss., Université Côte d'Azur, 2022. https://intranet-theses.unice.fr/2023COAZ2022.
Повний текст джерелаАнотація:
Ce travail de recherche sur la réception des classiques veut répondre à un problème lié à la théorie de la littérature et à la philologie : pourquoi étudier la réception antique d’un texte et la pensée de son auteur au XXIème siècle et qu’est-ce qui nous permet de comprendre la dynamique de réinterprétation dans les sociétés qui l’intègrent ? Ce travail a entraîné la nécessité de s’interroger sur quatre points spécifiques : - Qu’est-ce qui nous permet de comprendre, aujourd’hui, l’étude de la réception antique de la Vie de Marius ? - Pourquoi et comment le style et le contenu de cette œuvre ont-ils été réutilisés par des auteurs successifs qui en ont modifié le sens ? - Combien cette Vie a-t-elle conditionné la perception de la figure de Marius dans l’imaginaire qui lui a succédé et combien les thématiques qu’elle aborde ont-elles façonné la pensée de sa postérité ? - Dans quelle mesure cette œuvre est-elle représentative de la poétique, de la vision politique, de la philosophie, du contexte culturel et des lectures de Plutarque, et dans quelle mesure nous permet-elle de comprendre leurs réutilisations (même lorsque nous n’avons pas la certitude qu’elles proviennent d’une lecture directe de Plutarque) ? Le sujet de cette recherche est représenté par la compréhension des dynamiques de réception et de réutilisation de la Vie de Marius, de son style et de la philosophie politique et religieuse qu’il véhicule et témoigne, de la dynastie des Antonins jusqu’à la naissance des royaumes barbaresThis research aims to answer three questions: why do we study an ancient reception of a text, in the 21st century ? Why do texts change their meanings throughout time ? How does this occur in our case study, Marius’ life? The methodologic approach is based on Jauss’ hermeneutic ; Gramsci’s cultural hegemony ; László’s construction of cultural identity ; Hardwick’s classical reception studies ; Lausberg’s literary communities. Moreover, I propose to define cultural communities. These communities reuse texts according to their own perception (voluntarily or involuntarily). So, I have selected a corpus of authors, linked to Plutarch and Marius, that have been catalogued by different cultural groups. The results show that under the Antonine dynasty Marius’ existence is almost forgotten, but the moral message of Life is systematically reused. The 3rd century exalts the authoritarian Marius, according to the political program of the Severan dynasty and military emperors. The 4th and 5th centuries reused Marius’ life in two ways : Christians describe a bad man, while pagans portray a hero, because the former want to condemn, and the latter want to glorify Roman tradition. These results have already answered the third question, on how meanings change. They allow us to answer the second question: why ? Because of the change of political aims. Finally, I can answer the first one: why is this important for us ? Because contemporary cultural communities reuse classical texts in the same ways as the ancient ones. So, this analysis of the past can explain the present too
4
Musacchio, Pierfrancesco. "La Ricezione della Vita di Mario di Plutarco nella cultura greco-latina dal II al V secolo d.C." Doctoral thesis, Università degli studi di Trento, 2022. http://hdl.handle.net/11572/347459.
Повний текст джерелаАнотація:
This research aims to answer three questions: why do we study an ancient reception of a text, in the 21st century? Why do texts change their meanings throughout time? How does this occur in our case study, Marius’ life? The methodologic approach is based on Jauss’ hermeneutic; Gramsci’s cultural hegemony; László’s construction of cultural identity; Hardwick’s classical reception studies; Lausberg’s literary communities. Moreover, I propose to define cultural communities. These communities reuse texts according to their own perception (voluntarily or involuntarily). So, I have selected a corpus of authors, linked to Plutarch and Marius, that have been catalogued by different cultural groups. The results show that under the Antonine dynasty Marius’ existence is almost forgotten, but the moral message of Life is systematically reused. The 3rd century exalts the authoritarian Marius, according to the political program of the Severan dynasty and military emperors. The 4th and 5th centuries reused Marius’ life in two ways: Christians describe a bad man, while pagans portray a hero, because the former want to condemn, and the latter want to glorify Roman tradition. These results have already answered the third question, on how meanings change. They allow us to answer the second question: why? Because of the change of political aims. Finally, I can answer the first one: why is this important for us? Because contemporary cultural communities reuse classical texts in the same ways as the ancient ones. So, this analysis of the past can explain the present too.
5
Giroux, Chandra. "Morality in Plutarch's "Life of Cimon"." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35198.
Повний текст джерелаАнотація:
Understanding Plutarch’s Parallel Lives as a literary text is the focus of current scholarship. However, to this date, no one has looked at Plutarch’s Life of Cimon to analyze what it reveals about morality. My thesis endeavours to understand how Plutarch shapes Cimon as a literary character to bring to light the moral focus of this Life. It first investigates Plutarch’s life and the atmosphere in which he lived to understand what influenced his writing. Chapter One follows with a discussion of the composition of the Lives to understand how they are organized. The insistence on reading each book’s four parts (proem, Life 1, Life 2, synkrisis) to fully appreciate their moral relevance leads to Chapter Two, which dissects the main components of Plutarch’s moral mirror. This provides the necessary background needed for Chapter Three’s case study of Plutarch’s Cimon. Here, I argue that the main moral message contained therein is the importance of generosity and euergetism.
6
Raja, G. R. Karthik. "Exhaustion dominated performance : an empirical evaluation (using real life simulation software)." Thesis, University West, Department of Economics and IT, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-461.
Повний текст джерелаАнотація:
This paper aims at implementing (or) extending the evaluation of Exhaustion Dominated Performance, a method used to compute the impact of the available memory and bandwidth over the execution time of a simulation software. This method has already been performed and tested using High Performance Linpack (a de facto for bench marking process) [1]. But in this paper, the experiment is repeated using the real world simulation software so as to prove that the method is applicable in practical. The thesis was conducted using the same experimental conditions and the results obtained proved that the method works find for real world applications also.
7
Pester, M. "On-line visualization in parallel computations." Universitätsbibliothek Chemnitz, 1998. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199801143.
Повний текст джерелаАнотація:
The investigation of new parallel algorithms for MIMD computers
requires some postprocessing facilities for quickly evaluating
the behavior of those algorithms We present two kinds of
visualization tool implementations for 2D and 3D finite element
applications to be used on a parallel computer and a host
workstation.
8
Thomas, Marcel. "Local lives, parallel histories : villagers and everyday life in the divided Germany." Thesis, University of Bristol, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.738224.
Повний текст джерела
9
Burton, James D. "Parallel simulation of hydraulic systems using transmission-line modelling (TLM)." Thesis, University of Bath, 1994. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387215.
Повний текст джерела
10
Achyutuni, Kiran Jyotsna. "On-line tuning of data placement in parallel databases." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/8124.
Повний текст джерела
11
Cheong, Pedro. "Miniaturized parallel coupled-line bandpass filter with spurious response suppression." Thesis, University of Macau, 2005. http://umaclib3.umac.mo/record=b1445848.
Повний текст джерела
12
Venkataraju, Ram Prasaad. "Buffer allocation in an unreliable homogeneous serial parallel production line." Thesis, Wichita State University, 2010. http://hdl.handle.net/10057/3755.
Повний текст джерелаАнотація:
Buffers are inventory held in between machines to avoid stockout of parts. When a
company has large buffer quantities between machines the inventory holding cost increases.
Reducing the amount in a buffer increases the chance of stockout and hence will have a direct
impact on the throughput of the line. Hence there is a need to maximize the throughput of the
production line for a minimum quantity of buffers carried between machines.
In large volume manufacturing, homogeneous unreliable serial parallel production lines
are typical. For this line, a method is developed to identify the buffer allocation that maximizes
the throughput of the line with a constraint on the maximum buffer size that can be held in the
line. The developed method is implemented in case studies to identify buffer allocation that
maximizes throughput.Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Industrial and Manufacturing Engineering.
13
Lewis, Beverley A. "Parallel virtue, a life history of Nova, a woman, a prostitute and a mother." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ35906.pdf.
Повний текст джерела
14
Jordan, Ariana. "Managing parallel life stages : a quantitative study of psychological wellbeing, satisfaction with life, and parental sense of competence in parents at midlife." Thesis, University of East London, 2017. http://roar.uel.ac.uk/7313/.
Повний текст джерелаАнотація:
Being a parent at midlife often entails the management of significant biological, cognitive, emotive, and psychosocial changes. This is often accompanied by increased responsibility in the home and work domains. Those who are parents at midlife will often have a child in adolescence, whose cognitive maturation may pose additional challenges to the status quo of an established family system. For twenty years, researchers have recognised the potential interaction of midlife themes in the parent with the challenges of parenting an adolescent. However, no studies to date have explicitly investigated the presence of these midlife themes, their possible interaction with the parent-child relationship, and the effects on parental wellbeing. 89 participants: 72 mothers and 17 fathers, completed an online questionnaire, comprised of measures of depression, anxiety, stress, self-esteem and satisfaction with life. The questionnaire also included devised questions on two key themes of midlife: growth and decline, and facing one’s own mortality, along with questions identifying the presence of protection and resilience factors, and the quality of the parent-child relationship. It was hypothesised that a) there would be differences in psychological wellbeing between parents parenting a firstborn child in adolescence, as opposed to a different life stage b) that mothers would score lower in psychological wellbeing than fathers, and c) that those parenting a child in the adolescent transition would show lower levels of parental sense of competence than those parenting a child at a different life stage. Psychological wellbeing scores were largely within an average range, but significant differences were found in depression and stress: the MLA group (16-22 years) reported significantly less depression than the IEC group (0-8 years), the AT group (9-15 years) and the AD group (23+ years). They also reported lower levels of anxiety and stress, and higher levels of self-esteem and satisfaction with life than the other three groups, but these differences were non-significant. The IEC group reported significantly more stress than the other three groups. They also reported lower levels of self-esteem and satisfaction with life than most other groups. These differences were non-significant, however. No significant differences in wellbeing were found between mothers and fathers. Across all age categories, parental sense of competence was within an average range and no significant differences were found across child ages. Medium to strong agreement was found for the majority of the questions relating to midlife themes, and the parent-child relationship was found to be largely rewarding, but also less fulfilling in some aspects. The study provides an indication of differences in parental psychological wellbeing, according to the age of the firstborn child. It also shows similarities of experience with regard to midlife themes, and areas for further investigation in the nature of the parent-child relationship. This has implications for counselling psychologists working with midlife parents, as it reveals the complexities of parenting at this life stage, and the need to consider developmental issues regarding the life stage of the parent and child simultaneously. Suggestions are made for further research.
15
Kucukkoc, Ibrahim. "Modelling and solving mixed-model parallel two-sided assembly line problems." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/18917.
Повний текст джерелаАнотація:
The global competitive environment and the growing demand for personalised products have increased the interest of companies in producing similar product models on the same assembly line. Companies are forced to make significant structural changes to rapidly respond to diversified demands and convert their existing single-model lines into mixed-model lines in order to avoid unnecessary new line construction cost for each new product model. Mixed-model assembly lines play a key role in increasing productivity without compromising quality for manufacturing enterprises. The literature is extensive on assembling small-sized products in an intermixed sequence and assembling large-sized products in large volumes on single-model lines. However, a mixed-model parallel two-sided line system, where two or more similar products or similar models of a large-sized product are assembled on each of the parallel two-sided lines in an intermixed sequence, has not been of interest to academia so far. Moreover, taking model sequencing problem into consideration on a mixed-model parallel two-sided line system is a novel research topic in this domain. Within this context, the problem of simultaneous balancing and sequencing of mixed-model parallel two-sided lines is defined and described using illustrative examples for the first time in the literature. The mathematical model of the problem is also developed to exhibit the main characteristics of the problem and to explore the logic underlying the algorithms developed. The benefits of utilising multi-line stations between two adjacent lines are discussed and numerical examples are provided. An agent-based ant colony optimisation algorithm (called ABACO) is developed to obtain a generic solution that conforms to any model sequence and it is enhanced step-by-step to increase the quality of the solutions obtained. Then, the algorithm is modified with the integration of a model sequencing procedure (where the modified version is called ABACO/S) to balance lines by tracking the product model changes on each workstation in a complex production environment where each of the parallel lines may a have different cycle time. Finally, a genetic algorithm based model sequencing mechanism is integrated to the algorithm to increase the robustness of the obtained solutions. Computational tests are performed using test cases to observe the performances of the developed algorithms. Statistical tests are conducted through obtained results and test results establish that balancing mixed-model parallel two-sided lines together has a significant effect on the sought performance measures (a weighted summation of line length and the number of workstations) in comparison with balancing those lines separately. Another important finding of the research is that considering model sequencing problem along with the line balancing problem helps algorithm find better line balances with better performance measures. The results also indicate that the developed ABACO and ABACO/S algorithms outperform other test heuristics commonly used in the literature in solving various line balancing problems; and integrating a genetic algorithm based model sequencing mechanism into ABACO/S helps the algorithm find better solutions with less amount of computational effort.
16
Erikson, Alexander K. "Antimicrobial Peptide Development: From Massively Parallel Peptide Sequencing to Bioinformatic Motif Identification." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8761.
Повний текст джерелаАнотація:
The isolation, purification, and clinical deployment of antibiotics is one of the major drivers of decrease in morbidity and mortality from infectious bacteria in the 20th century. The rapid, ubiquitous deployment of antibiotics encouraged swift development and distribution of antibiotic resistance. New, novel techniques, technologies, and ultimately therapeutic antimicrobial compounds will be required to counter the rise of antibiotic resistant microbes. Historically, mimicking naturally occurring compounds has been the most fruitful method for discovering new antibiotics; unsurprisingly, many recent efforts have focused on expanding the cultivation and detection of previously unknown microbes and compounds, respectively. Other techniques explore developing compounds de novo, reverse-engineering potential therapies from a detailed understanding of the biochemistry of pathogens. We describe a novel peptide screening tool in E. coli designed to be used for such an application. This platform, termed PepSeq, is capable of screening millions of peptides simultaneously by using Illumina sequencing technology. Additionally, we have explored several peptide scaffolds that have a conserved secondary structure with a large randomizable domain of several amino acids, which allows the screening for new and novel biochemical interactions with more stable structure than a simple linear peptide. Finally, we have developed a bioinformatics workflow that complements PepSeq that allows analysis of PepSeq data for peptide motifs of interest, vastly streamlining motif identification and verification.
17
Donworth, Thomas. "Parallel aspects of spiritual renewal in the ministries of A.B. Simpson and Bill Bright." Online full text .pdf document, available to Fuller patrons only, 2004. http://www.tren.com.
Повний текст джерела
18
Markomanolis, Georgios. "Performance Evaluation and Prediction of Parallel Applications." Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2014. http://tel.archives-ouvertes.fr/tel-00951125.
Повний текст джерелаАнотація:
Analyzing and understanding the performance behavior of parallel applicationson various compute infrastructures is a long-standing concern in the HighPerformance Computing community. When the targeted execution environments arenot available, simulation is a reasonable approach to obtain objectiveperformance indicators and explore various ''what-if?'' scenarios. In thiswork we present a framework for the off-line simulation of MPIapplications. The main originality of our work with regard to the literature is to rely on\tit execution traces. This allows for an extreme scalability as heterogeneousand distributed resources can be used to acquire a trace. We propose a formatwhere for each event that occurs during the execution of an application we logthe volume of instructions for a computation phase or the bytes and the type ofa communication. To acquire time-independent traces of the execution of MPI applications, wehave to instrument them to log the required data. There exist many profilingtools which can instrument an application. We propose a scoring system thatcorresponds to our framework specific requirements and evaluate the mostwell-known and open source profiling tools according to it. Furthermore weintroduce an original tool called Minimal Instrumentation that was designed tofulfill the requirements of our framework. We study different instrumentationmethods and we also investigate several acquisition strategies. We detail thetools that extract the \tit traces from the instrumentation traces of somewell-known profiling tools. Finally we evaluate the whole acquisition procedureand we present the acquisition of large scale instances. We describe in detail the procedure to provide a realistic simulated platformfile to our trace replay tool taking under consideration the topology of thereal platform and the calibration procedure with regard to the application thatis going to be simulated. Moreover we present the implemented trace replaytools that we used during this work. We show that our simulator can predictthe performance of some MPI benchmarks with less than 11\% relativeerror between the real execution and simulation for the cases that there is noperformance issue. Finally, we identify the reasons of the performance issuesand we propose solutions.
19
Loasby, J. M. "Real time transmission line modelling of the vocal tract using multiple digital signal processors." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339551.
Повний текст джерела
20
Bischof, Stefan. "Efficient algorithms for on-line scheduling and load distribution in parallel systems." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=959771409.
Повний текст джерела
21
Liu, Che. "Design a Bandpass Filter for GSM 900 : Parallel Coupled Line Filter Design." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-15502.
Повний текст джерела
22
Salmanpour, Rahmdel Payam. "A parallel windowing approach to the Hough transform for line segment detection." Thesis, Middlesex University, 2013. http://eprints.mdx.ac.uk/12629/.
Повний текст джерелаАнотація:
In the wide range of image processing and computer vision problems, line segment detection has always been among the most critical headlines. Detection of primitives such as linear features and straight edges has diverse applications in many image understanding and perception tasks. The research presented in this dissertation is a contribution to the detection of straight-line segments by identifying the location of their endpoints within a two-dimensional digital image. The proposed method is based on a unique domain-crossing approach that takes both image and parameter domain information into consideration. First, the straight-line parameters, i.e. location and orientation, have been identified using an advanced Fourier-based Hough transform. As well as producing more accurate and robust detection of straight-lines, this method has been proven to have better efficiency in terms of computational time in comparison with the standard Hough transform. Second, for each straight-line a window-of-interest is designed in the image domain and the disturbance caused by the other neighbouring segments is removed to capture the Hough transform buttery of the target segment. In this way, for each straight-line a separate buttery is constructed. The boundary of the buttery wings are further smoothed and approximated by a curve fitting approach. Finally, segments endpoints were identified using buttery boundary points and the Hough transform peak. Experimental results on synthetic and real images have shown that the proposed method enjoys a superior performance compared with the existing similar representative works.
23
Babbar, Davender. "On-line hard real-time scheduling of parallel tasks on partitionable multiprocessors /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487858417983777.
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24
Chaiwan, Pramote. "NEW ACCURATE FAULT LOCATION ALGORITHM FOR PARALLEL TRANSMISSION LINES." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_diss/813.
Повний текст джерелаАнотація:
Electric power systems have been in existence for over a century. Electric power transmission line systems play an important role in carrying electrical power to customers everywhere. The number of transmission lines in power systems is increasing as global demand for power has increased. Parallel transmission lines are widely used in the modern transmission system for higher reliability. The parallel lines method has economic and environmental advantages over single circuit. A fault that occurs on a power transmission line will cause long outage time if the fault location is not located as quickly as possible. The faster the fault location is found, the sooner the system can be restored and outage time can be reduced.
The main focus of this research is to develop a new accurate fault location algorithm for parallel transmission lines to identify the fault location for long double-circuit transmission lines, taking into consideration mutual coupling impedance, mutual coupling admittance, and shunt capacitance of the line.
In this research, the equivalent PI circuit based on a distributed parameter line model for positive, negative, and zero sequence networks have been constructed for system analysis during the fault. The new method uses only the voltage and current from one end of parallel lines to calculate the fault distance. This research approaches the problem by derivation all equations from positive sequence, negative sequence, and zero sequence network by using KVL and KCL. Then, the fault location is obtained by solving these equations. EMTP has been utilized to generate fault cases under various fault conditions with different fault locations, fault types and fault resistances. Then the algorithm is evaluated using the simulated data. The results have shown that the developed algorithm can achieve highly accurate estimates and is promising for practical applications.
25
Barbirz, Stefanie. "Konservierte Struktur bei genetischer Mosaizität : die Tailspike Proteine dreier Phagen der Familie Podviridae." Phd thesis, Universität Potsdam, 2005. http://opus.kobv.de/ubp/volltexte/2006/688/.
Повний текст джерелаАнотація:
Die Tailspike Proteine (TSP) der Bakteriophagen P22, Sf6 und HK620 dienen der Erkennung von Kohlenhydratstrukturen auf ihren gram-negativen Wirtsbakterien und zeigen, von den ersten 110 Aminosäuren des N-Terminus abgesehen, keine Sequenzübereinstimmung. Mit Röntgenkristallstrukturanalyse konnte gezeigt werden, dass HK620TSP und Sf6TSP ebenfalls zu einer parallelen, rechtsgängigen beta-Helix falten, wie dies schon für P22TSP bekannt war. Die Kohlenhydratbindestelle ist bei Sf6TSP im Vergleich zu P22TSP zwischen die Untereinheiten verschoben.The bacteriophages P22, Sf6 and HK620 need their tailspike proteins (TSP) for recognition of surface carbohydrates on their gram-negative host bacteria. Sequence identity is completely lacking in their C-terminal 500 to 600 amino acids. The three TSP have the same fold, an oligomeric parallel beta-helix, as shown by crystal structure analyses of HK620TSP and Sf6TSP. Compared with P22TSP, the carbohydrate binding site of Sf6TSP is located at the interface between two monomers and not on a single monomer.
26
Fiedler, Christian. "Die Strukturbildung der beta-Helix in der Pektatlyase Pel-15." Phd thesis, Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4725/.
Повний текст джерелаАнотація:
Pektatlyase (Pel-15) aus dem alkalophilen Bodenbakterium Bacillus spec. KSM-P15 ist mit 197 Aminosäuren eines der kleinsten, bekannten β-3-Solenoidproteine. Sie spaltet Polygalakturonsäurederivate in einem Ca2+-abhängigen β-Eliminierungsprozess. Wie bei allen Proteinen dieser Enzymfamilie ist auch die Polypeptidkette von Pel-15 zu einer einsträngigen, rechtsgängigen, parallelen β-Helix aufgewunden. In diesem Strukturmotiv enthält jede Windung drei β-Stränge, die jeweils durch flexible Schleifenbereiche miteinander verbunden sind. Insgesamt acht Windungen stapeln sich in Pel-15 übereinander und bilden entlang der Helixachse flächige, parallele β-Faltblätter aus. Im Bereich dieser β-Faltblätter existiert ein ausgedehntes Netzwerk von Wasserstoffbrückenbindungen, durch das der hydrophobe Kern, der sich im Inneren der β-Helix befindet, vom umgebenden Lösungsmittel abgeschirmt wird. Besondere Abschlussstrukturen an beiden Enden der β-Helix, wie sie typischerweise bei anderen Ver-tretern dieser Strukturklasse ausgeprägt werden, sind in Pel-15 nicht zu beobachten. Stattdessen sind die terminalen Bereiche der β-Helix über Salzbrücken und hydrophobe Seitenkettenkontakte stabilisiert.
In der vorliegenden Dissertation wurde die Pektatlyase Pel-15 hinsichtlich ihres Faltungsgleichgewichtes, ihrer enzymatischen Aktivität und der Kinetik ihrer Strukturbildung charakterisiert. In eine evolutionär konservierte Helixwindung wurden destabilisierende Mutationen eingeführt, und deren Auswirkungen mittels spektroskopischer Methoden analysiert. Die Ergebnisse zeigen, dass Pel-15 in Gegenwart des Denaturierungsmittels Guanidiniumhydrochlorid einen hyperfluoreszenten Gleichgewichtsustand (HF) populiert, der nach Messungen von Faltungs- und Entfaltungskinetiken ein konformationelles Ensemble aus den Zuständen HFslow und HFfast darstellt. Diese HF-Zustände sind durch eine hohe Aktivierungsbarriere voneinander getrennt. In Rückfaltungsexperimenten populieren nur etwa 80 % der faltenden Moleküle den Zwischenzustand HFslow, der mit einer Zeitkonstante von ca. 100 s zu HFfast weiterreagiert. Die Denaturierungsmittelabhängigkeit dieser Reaktion ist sehr gering, was eine trans-/cis-Prolylisomerisierung als geschwindigkeitslimitierenden Schritt nahelegt. Die Existenz eines cis-Peptides in der nativen Struktur macht es erforderlich, den denaturierten Zustand als ein Ensemble kinetisch separierter Konformationen, kurz: DSE, zu betrachten, das durch die Spezies Ufast und Uslow populiert wird.
Nach dem in dieser Arbeit aufgestellten „Minimalmodell der Pel-15 Faltung“ stehen die HF-Spezies (HFslow, HFfast) mit den Konformationen des DSE in einem thermodynamischen Kreisprozess. Das Modell positioniert HFfast und die native Konformation N auf die „native Seite“ der Aktivierungsbarriere und trägt damit der Tatsache Rechnung, dass die Gleichgewichtseinstellung zwischen diesen Spezies zu schnell ist, um mit manuellen Techniken erfasst zu werden. Die hochaffine Bindung von Ca2+ (Kd = 10 μM) verschiebt sich das Faltungsgleichgewicht bereits in Gegenwart von 1 mM CaCl2 soweit auf die Seite des nativen Zustandes, das HFfast nicht länger nachweisbar ist.
Entgegen anfänglicher Vermutungen kommt einer lokalen, evolutionär konservierten Disulfidbrücke im Zentrum der β-Helix eine wichtige Stabilisierungsfunktion zu. Die Disulfidbrücke befindet sich in einem kurzen Schleifenbereich der β-Helix nahe dem aktiven Zentrum. Obwohl ihr Austausch gegen die Reste Val und Ala die freie Stabilisierungsenthalpie des Proteins um ca. 10 kJ/mol reduziert, lässt die Struktur im Bereich der Mutationsstelle keine gravierende Veränderung erkennen. Auch die katalytisch relevante Ca2+-Bindungsaffinität bleibt unbeeinflusst; dennoch zeigen Enzymaktivitätstests für VA-Mutanten eine Reduktion der enzymatischen Aktivität um fast 50 % an. Die evolutionär konservierte Helixwindung im Allgemeinen und die in ihr enthaltene Disulfidbrücke im Besonderen müssen nach den vorliegenden Ergebnissen also eine zentrale Funktion sowohl für die Struktur des katalytischen Zentrums als auch für die Strukturbildung der β-Helix während der Faltungsreaktion besitzen.
Die Ergebnisse dieser Arbeit finden in mehreren Punkten Anklang an Faltungseigenschaften, die für andere β -Helixproteine beschrieben wurden. Vor allem aber prädestinieren sie Pel-15 als ein neues, β-helikales Modellprotein. Aufgrund seiner einfachen Topologie, seiner niedrigen Windungszahl und seiner hohen thermodynamischen Stabilität ist Pel-15 sehr gut geeignet, die Determinanten von Stabilität und Strukturbildung des parallelen β-Helix-Motivs in einer Auflösung zu studieren, die aufgrund der Komplexität bestehender β-helikaler Modellsysteme bislang nicht zur Verfügung stand.Pectate lyase Pel-15 was isolated from alcaliphlic Bacillus spec. strain KSM-P15. Like all pectate lyases Pel-15 binds and subsequently cleaves polygalacturonic acid, the main pectic compound in plant cell walls and middle lamellae, in a Ca2+ dependent beta-elimination reaction. With 197 amino acids and a molecular mass of only 21 kDa the protein is one of the smallest right-handed parallel beta-helical proteins known today. Polypeptide chains that are classified into this structural family adopt super-helical folds in which each “solenoid stack” consists of three beta-structured regions that are connected by flexible turn segments. Along its longitudinal axis the right-handed parallel beta-helix thus comprises three elongated parallel beta-sheets that are stabilized by an extensive network of hydrogen bonds wrapping around the densely packed hydrophobic core. Together with the shield-like arrangement of hydrogen bonds this hydrophobic core is considered as the main contributor to an exceptionally high stability that is a common feature of all beta-helical proteins. In contrast to most right-handed parallel beta-helices, Pel-15 is devoid of any terminal capping domains and laterally associated secondary structure. Therefore, this protein is considered to be a promising model protein of a pure beta-helix which will help to understand the determinants of both parallel beta-sheet formation and stability. In the dissertation at hand optical spectroscopic methods were used to assess the enzymatic activity, the folding/unfolding equilibrium and the kinetic mechanism of structure formation in neutral buffered solutions. Results indicate that Pel-15 populates a hyper-fluorescent equilibrium intermediate (HF) that is effectively populated in presence of the denaturing agent guanidinium hydrochloride (GdmCl). According to kinetic folding and unfolding experiments HF is not only an essential on-pathway intermediate but has to be considered as a conformational ensemble in which several hyperfluorescent states are in thermodynamic equilibrium with each other. According to their existence in kinetic folding trajectories these different HF-species were termed HFslow and HFfast. The activation energy between both states is remarkably high leading to a time constant of about 100 seconds for the reaction HFslow ⇆ HFfast. Since native Pel-15 contains an energetically disfavoured cis-prolyl peptide between A59 and P60 it is proposed that HFslow and HFfast differ in their prolyl peptide conformations. Two main results emerge from this dissertation. First, an extensive study of the Pel-15 folding- and unfolding behaviour facilitated the proposal of a “minimal folding model”. According to this model the HF-states and the according denatured species Uslow and Ufast are aligned into a thermodynamic circle. This implies that unfolded polypeptide chains reach the HF-ensemble via parallel folding trajectories. Since the native conformation N together with HFfast are on the same side of the activation barrier, it is the reaction HFslow ⇆ HFfast that is the rate limiting step in the folding reaction of Pel-15. Second, the importance of an evolutionarily conserved disulfide bond in the central region of Pel-15 was tested by site directed mutagenesis and subsequent spectroscopic characterization. The exchange of the disulfide against a hydrophobic pair of alanine and valine decreases the folding free energy by about 10 kJ/mol. Although this value is unexpectedly high, structural perturbations around both mutational positions are small as was deduced from X-Ray crystallography. Interestingly, the stability decrease is accompanied by a major loss of enzymatic activity while the Ca2+ binding affinity is not significantly affected. It is therefore concluded that the allosterically relevant disulfide bond stabilizes long-range interactions that stabilize several adjacent solenoid turns near the N-terminus of the protein. Indeed, planar stacking interactions are perturbed and flexibility of N-terminal loops is increased once the disulfide bond is removed. This dissertation establishes Pel-15 as a novel beta-helical model protein and – even more important – smoothes the way for a generally accepted perspective on the formation and stability of parallel beta-sheet proteins.
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Karouia, Mourad. "Conception structurale de mécanismes parallèles sphériques." Châtenay-Malabry, Ecole centrale de Paris, 2003. http://www.theses.fr/2003ECAP0916.
Повний текст джерелаАнотація:
Une méthode de synthèse systématique d'architectures de mécanismes parallèles sphériques, reposant sur l'utilisation des propriétés algébriques du groupe de Lie des déplacements, a été développée. Elle a permis la synthèse de tous les mécanismes parallèles sphériques. Une étude architecturale a été présentée et une classification des mécanismes a été établie. La recherche des singularités de ces mécanismes s'appuie sur une analyse des sous-ensembles de déplacements finis. En déterminant les singularités par bras ensuite les singularités par l'assemblage des trois bras, toutes les configurations singulières ont été mises en évidence. Les singularités finies permanentes induisent des mobilités additionnelles conduisant ainsi à des nouveaux mécanismes à 4-ddl et à 5-ddl hyperstatiques. Enfin, une énumération systématique de ces nouveaux mécanismes parallèles à 4-ddl et à 5-ddl a été obtenueA method for systematic synthesis of spherical parallel mechanisms architectures, based on algebraic proprieties of the Lie group of displacements, was developed. Then structural types of spherical parallel mechanisms were enumerated and classification of the mechanisms was presented. An approach based on the analysis of finite displacements sets proprieties was employed to identify singular configurations of mechanisms. Permanent finite singularities induce additional motilities and then new 4-dof and 5-dof over-constrained mechanisms were deduced. Finally, an enumeration of these novel 4-dof and 5-dof parallel mechanisms was obtained
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Gu, Weiming. "On-line monitoring and interactive steering of large-scale parallel and distributed applications." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/9220.
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Morrison, Garrett. "On the Performance of Line Integral Convolution in a Distributed-Memory Parallel Setting." Thesis, University of Oregon, 2018. http://hdl.handle.net/1794/23835.
Повний текст джерелаАнотація:
Line integral convolution (LIC) is a powerful tool for visualizing vector fields by combining particle advection with image convolution. Practical usage of LIC is limited by its computational expense, requiring many calculations for every cell in the mesh. Fortunately, computation of LIC can be accelerated through parallelization. In this thesis we evaluate whether LIC parallelizes better over distributed systems than comparable particle advection algorithms. We do this by harnessing the VisIt Parallel Integral Curve System for the generation of LIC convolution kernels. We also contribute an extension to LIC which reduces dependency on input data. We look at how the algorithm compares to other advection techniques with respect to performance and load balancing. We evaluate the performance of LIC with PICS across 36 different test configurations with three metrics. We find a 2x performance improvement and an up to 8x load balancing improvement for LIC over traditional parallel streamlines.
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Ungruh, Joachim. "A neurally based vision model for line extraction and attention." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/8303.
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TANGHERLONI, ANDREA. "High-Performance Computing to tackle complex problems in life sciences." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2019. http://hdl.handle.net/10281/241217.
Повний текст джерелаАнотація:
Nuovi ed efficienti metodi computazionali sono attualmente necessari per elaborare la ingente mole di dati generata dalle più recenti tecnologie sviluppate in svariati settori delle scienze della vita, tra cui la biologia computazionale e l’imaging medicale. In altre discipline, come la biologia dei sistemi in cui si modellano matematicamente le reti biochimiche, è necessario affrontare problemi relativi alla mancanza di dati quantitativi, e allo stesso tempo simulare efficacemente le dinamiche emergenti di queste reti.
In questi contesti applicativi, le infrastrutture di calcolo ad elevate prestazioni si stanno rivelando uno strumento fondamentale per affrontare e risolvere i problemi che insorgono, in quanto permettono sia di elaborare in tempo reale ingenti quantità di dati sia di eseguire simulazioni in modo efficace ed efficiente. Durante gli ultimi anni si sta sempre di più radicando l’uso di dispositivi general-purpose caratterizzati da decine, centinaia o migliaia di core di calcolo, come ad esempio i coprocessori Many Integrated Cores e le Graphics Processing Units (GPU). L’uso delle GPU è motivato sia dalla efficienza computazionale che possono raggiungere (nell’ordine dei teraflop) grazie alle migliaia di core a disposizione sia dall’efficienza energetica che le contraddistingue.
Oltre al calcolo ad elevate prestazioni, in questa tesi si sono sfruttate tecniche di intelligenza computazionale per affrontare problemi di ottimizzazione, come ad esempio la stima di parametri nella biologia dei sistemi, l’inferenza degli aplotipi nella bioinformatica, l’enhancement e la segmentazione di immagini medicali caratterizzate da istogrammi bimodali dei livelli di grigio che costituiscono le immagini stesse. La stima di parametri è stata affrontata sfruttando approcci di computazione evolutiva e di swarm intelligence insieme a nuovi simulatori accelerati su GPU - sviluppati appositamente per eseguire in parallelo sia molte simulazioni corrispondenti a diverse parametrizzazione dei modelli matematici che una singola simulazione di reti biochimiche a larga scala - permettendo di ridurre drasticamente il tempo di calcolo richiesto per calcolare le funzioni di fitness di questi approcci. Grazie alla loro efficacia nel risolvere i problemi combinatori, gli Algoritmi Genetici sono stati utilizzati per risolvere i problemi relativi alla ricostruzione degli aplotipi e l’enhancement delle immagini medicali. I due metodi proposti sono stati sviluppati sfruttando il paradigma Master-Slave che permette di distribuire il gravoso carico computazionale richiesto per risolvere questi problemi, riducendo notevolmente i tempi di calcolo.
I risultati ottenuti in questa tesi mostrano come l’utilizzo del calcolo ad elevate prestazioni, unito alle tecniche di intelligenza computazionale, rappresenti una strategia efficace per la risoluzione di questi problemi, permettendo di effettuare analisi computazionali complesse richieste nelle scienze della vita.Recent advances in several research fields of Life Sciences, such as Bioinformatics, Computational Biology and Medical Imaging, are generating huge amounts of data that require effective computational tools to be analyzed, while other disciplines, like Systems Biology, typically deal with mathematical models of biochemical networks, where issues related to the lack of quantitative parameters and the efficient description of the emergent dynamics must be faced. In these contexts, High-Performance Computing (HPC) infrastructures represent a fundamental means to tackle these problems, allowing for both real-time processing of data and fast simulations. In the latest years, the use of general-purpose many-core devices, such as Many Integrated Core coprocessors and Graphics Processing Units (GPUs), gained ground. The second ones, which are pervasive, relatively cheap and extremely efficient parallel many-core coprocessors capable of achieving tera-scale performance on common workstations, have been extensively exploited in the work presented in this thesis. Moreover, some of the problems described here require the application of Computational Intelligence (CI) methods. As a matter fact, the Parameter Estimation problem in Systems Biology, the Haplotype Assembly problem in Genome Analysis as well as the enhancement and segmentation of medical images characterized by a bimodal gray level intensity histogram can be viewed as optimization problems, which can be effectively addressed by relying on CI approaches. In the case of the Parameter Estimation problem, Evolutionary and Swarm Intelligence techniques were exploited and coupled with novel GPU-powered simulators-designed and developed in this thesis to execute both coarse-grained and fine-grained simulations-which were used to perform in a parallel fashion the biochemical simulations underlying the fitness functions required by these population-based approaches. The Haplotype Assembly and the enhancement of medical images problems were both addressed by means of Genetic Algorithms (GAs), which were shown to be very effective in solving combinatorial problems. Since the proposed approaches based on GAs are computationally demanding, a Master-Slave paradigm was exploited to distribute the workload, reducing the required running time. The overall results show that coupling HPC and CI techniques is advantageous to address these problems and speed up the computational analyses in these research fields.
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Chiang, Chun Pong. "Design of quasi-elliptic microstrip bandpass filter using terminated anti-parallel coupled-line structure." Thesis, University of Macau, 2007. http://umaclib3.umac.mo/record=b1937941.
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Tsai, Cheng-Han [Verfasser], and Roland [Akademischer Betreuer] Zengerle. "Highly parallel microbioreactors for cell line development based on well plates with functional lids." Freiburg : Universität, 2019. http://d-nb.info/1181689961/34.
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Silva, Kayo Gon?alves e. "An?lise de escalabilidade de uma implementa??o paralela do simulated annealing acoplado." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15471.
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This paper analyzes the performance of a parallel implementation of Coupled Simulated Annealing (CSA) for the unconstrained optimization of continuous variables problems. Parallel processing is an efficient form of information processing with emphasis on exploration of simultaneous events in the execution of software. It arises primarily due to high computational performance demands, and the difficulty in increasing the speed of a single processing core. Despite multicore processors being easily found nowadays, several algorithms are not yet suitable for running on parallel architectures. The algorithm is characterized by a group of Simulated Annealing (SA) optimizers working together on refining the solution. Each SA optimizer runs on a single thread executed by different processors. In the analysis of parallel performance and scalability, these metrics were investigated: the execution time; the speedup of the algorithm with respect to increasing the number of processors; and the efficient use of processing elements with respect to the increasing size of the treated problem. Furthermore, the quality of the final solution was verified. For the study, this paper proposes a parallel version of CSA and its equivalent serial version. Both algorithms were analysed on 14 benchmark functions. For each of these functions, the CSA is evaluated using 2-24 optimizers. The results obtained are shown and discussed observing the analysis of the metrics. The conclusions of the paper characterize the CSA as a good parallel algorithm, both in the quality of the solutions and the parallel scalability and parallel efficiency
O presente trabalho analisa o desempenho paralelo de uma implementa??o do Simulated Annealing Acoplado (CSA, do ingl?s Coupled Simulated Annealing) para otimiza??o de vari?veis cont?nuas sem restri??es. O processamento paralelo ? uma forma eficiente de processamento de informa??o com ?nfase na explora??o de eventos simult?neos na execu??o de um software. Ele surge principalmente devido ?s elevadas exig?ncias de desempenho computacional e ? dificuldade em aumentar a velocidade de um ?nico n?cleo de processamento. Apesar das CPUs multiprocessadas, ou processadores multicore, serem facilmente encontrados atualmente, diversos algoritmos ainda n?o s?o adequados para executar em arquiteturas paralelas. O algoritmo do CSA ? caracterizado por um grupo de otimizadores Simulated Annealing (SA) trabalhando em conjunto no refinamento da solu??o. Cada otimizador SA ? executado em uma ?nica thread, e essas executadas por diferentes processadores. Na an?lise de desempenho e escalabilidade paralela, as m?tricas investigadas foram: o tempo de execu??o; o speedup do algoritmo com respeito ao aumento do n?mero de processadores; e a efici?ncia na utiliza??o de elementos de processamento com rela??o ao aumento da inst?ncia do problema tratado. Al?m disso, foi verificada a qualidade da solu??o final. Para o estudo, esse trabalho analisa uma vers?o paralela do CSA e sua vers?o serial equivalente. Ambos algoritmos foram analisados sobre 14 fun??es de refer?ncia. Para cada uma dessas fun??es, o CSA ? avaliado utilizando de 2 a 24 otimizadores. Os resultados obtidos s?o exibidos e comentados observando-se as m?tricas de an?lise. As conclus?es do trabalho caracterizam o CSA como um bom algoritmo paralelo, seja na qualidade das solu??es como na escalabilidade e efici?ncia paralela
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Wendelborn, Andrew Lawrence. "Data flow implementations of a lucid-like programming language." Title page, contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phw471.pdf.
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Hong, Sio Ian. "The microstrip parallel coupled-line bandpass filter with simultaneous dual-band response and bandwidth enhancement." Thesis, University of Macau, 2009. http://umaclib3.umac.mo/record=b2119530.
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Sarfraz, Hassan. "Kinematics and Optimal Control of a Mobile Parallel Robot for Inspection of Pipe-like Environments." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30486.
Повний текст джерелаАнотація:
The objective of this thesis is to analyze the kinematics of a mobile parallel robot with contribution that pertain to the singularity analysis, the optimization of geometric parameters and the optimal control to avoid singularities when navigating across singular
geometric configurations. The analysis of the workspace and singularities is performed in a prescribed reference workspace regions using discretization method. Serial and parallel singularities are analytically analyzed and all possible singular configurations are presented. Kinematic conditioning index is used to determine the robot’s proximity to a singular configuration. A method for the determination of a continuous and singularity-free workspace is detailed.
The geometric parameters of the system are optimized in various types of pipe-like
structures with respect to a suitable singularity index, in order to avoid singularities during the navigation across elbows. The optimization problem is formulated with an objective to maximize the reachable workspace and minimize the singularities. The objective function is also subjected to constraints such as collision avoidance, singularity avoidance, workspace continuity and contact constraints imposed between the boundaries and the wheels of the robot. A parametric variation method is used as a technique to optimize the design parameters. The optimal design parameters found are normalized
with respect to the width of the pipe-like structures and therefore the results are
generalized to be used in the development phase of the robot.
An optimal control to generate singularity-free trajectories when the robotic device has to cross a geometric singularity in a sharp 90◦ elbow is proposed. Such geometric singularity inherently leads to singularities in the Jacobian of the system, and therefore a modified device with augmented number of degrees of freedom is introduced to be able to generate non-singular trajectories.
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Ben, abdallah Fida. "Modeling and control of a cabel driven parallel manipulator suspended by a heavy lift airship." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLE009/document.
Повний текст джерелаАнотація:
A l'heure où le monde entier appelle à développer de nouvelles technologies de transport afin de faire face au défi écologique, des projets de dirigeables gros porteurs permettent de relever ce défi. En outre, les dernières avancées technologiques dans le domaine de l'aérospatiale ont permis de résoudre un certain nombre de problèmes responsables de l'hibernation des grands dirigeables pendant plus d'un demi-siècle. Ceci a donné naissance à de nouveaux types de dirigeables gros porteurs. Dans cette thèse, le modèle dynamique du dirigeable gros porteur est défini afin de concevoir un contrôleur efficient.La particularité du dirigeable présenté est sa capacité de charger et de décharger le fret en vol stationnaire, ce qui permet de réduire l'apport logistique et humain par rapport à des scénarios comportant un atterrissage et permet ainsi l'utilisation de cet engin dans des zones ayant peu ou pas d'infrastructure.Ce dirigeable est muni d'une grue formée par un robot parallèle à câbles (RPC) permettant d'optimiser le chargement et déchargement. Cette phase étant la plus sensible, car la charge suspendue peut osciller dangereusement notamment sous l'effet de bourrasques de vent sur le dirigeable. Nous avons concentré nos efforts dans cette thèse à l'analyse de cette phase critique.Le dirigeable gros porteur sera représenté par un système multi-corps composé de plusieurs corps reliés entre eux par des articulations. Les contributions de la thèse sont présentées en deux parties. Dans la première partie, nous supposons qu'il n'y a pas de couplage inertiel entre le dirigeable et le RPC. Ainsi nos recherches ne concernent que le RPC en tenant compte de la mobilité de la base suspendue par des câbles considérés dans un premier temps comme idéaux, puis les phénomènes d'affaissement et de flexibilité des câbles seront pris en compte. La conception de la commande de ce système doit aussi intégrer une répartition optimale de la tension car les câbles doivent à chaque configuration rester tendus. Dans la deuxième partie, nous abordons l'analyse du système global en considérant l'effet de couplage inertiel entre la charge utile suspendue et le dirigeable. Le modèle dynamique de ce système multicorps formé par le dirigeable et le RPC peut être modélisé comme une interconnexion de sous-systèmes d'ordre inférieur. Nous supposons que le dirigeable gros porteur est un sous-système faiblement couplé. En se basant sur cette hypothèse, un contrôleur décentralisé est proposé permettant de contrôler indépendamment le dirigeable et le RPC. Les résultats des simulations numériques sont présentés et montrent la puissance de ce contrôleurIn the recent years, researchers have become increasingly interested in the development of radically new and sustainable transportation modes for both passengers and cargo. These challenges have led to study in areas of knowledge that were dormant, such as the potential of using lighter than air aircraft for cargo transportation. The focus of this thesis is the development of a control architecture that can be integrated on autonomous heavy lift airship and thereby enables safe cargo exchange process. Besides, the dynamic model of the heavy lift airship must be clarified before designing a controller. This system makes use of a Cable Driven Parallel Manipulator (CDPM), allowing the airship to load and unload cargo while hovering. The heavy lift airship is a multi-body systems in which multiple rigid bodies are joined together. During loading and unloading process, the transferred cargo can oscillate due toairship maneuvers. On the other hand, the pendulum-like behavior of suspended load canalter the flight characteristics of the airship. The thesis contributions are presented in two parts. In the first part, we assume that there is no inertial coupling between the airship and CDPM. Hence, our researches concern only the CDPM tacking into account the base mobility at first and then the cable sagging phenomena. The control design should integrate an optimal tension distribution since cables must remain in tension.In the second part, we address the analysis of the heavy lift airship considering the coupling effect between the suspended payload and the airship. To describe the dynamics coupling, the basic motion of one subsystem is regarded as an external disturbance input for the other one. Hence, the dynamic model of this multi-body system composed of the airship and the CDPM can be modeled as an interconnection of lower order subsystems. We assume that the heavy lift airship is a weakly coupled subsystems. Based on this assumption, we design a decentralized controller, which makes it possible to control the airship and the CDPM independently. Numerical simulation results are presented and stability analysis are provided to confirm the accuracy of our derivations
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Browne, Daniel R. "Application of multi-core and cluster computing to the Transmission Line Matrix method." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/14984.
Повний текст джерелаАнотація:
The Transmission Line Matrix (TLM) method is an existing and established mathematical method for conducting computational electromagnetic (CEM) simulations. TLM models Maxwell s equations by discretising the contiguous nature of an environment and its contents into individual small-scale elements and it is a computationally intensive process. This thesis focusses on parallel processing optimisations to the TLM method when considering the opposing ends of the contemporary computing hardware spectrum, namely large-scale computing systems versus small-scale mobile computing devices. Theoretical aspects covered in this thesis are: The historical development and derivation of the TLM method. A discrete random variable (DRV) for rain-drop diameter,allowing generation of a rain-field with raindrops adhering to a Gaussian size distribution, as a case study for a 3-D TLM implementation. Investigations into parallel computing strategies for accelerating TLM on large and small-scale computing platforms. Implementation aspects covered in this thesis are: A script for modelling rain-fields using free-to-use modelling software. The first known implementation of 2-D TLM on mobile computing devices. A 3-D TLM implementation designed for simulating the effects of rain-fields on extremely high frequency (EHF) band signals. By optimising both TLM solver implementations for their respective platforms, new opportunities present themselves. Rain-field simulations containing individual rain-drop geometry can be simulated, which was previously impractical due to the lengthy computation times required. Also, computationally time-intensive methods such as TLM were previously impractical on mobile computing devices. Contemporary hardware features on these devices now provide the opportunity for CEM simulations at speeds that are acceptable to end users, as well as providing a new avenue for educating relevant user cohorts via dynamic presentations of EM phenomena.
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Crawford, Philip S. "Reverse Line Movements in NFL Gambling: Parallels to Financial Market Biases and the Imitation of Informed Bettor Strategies." Scholarship @ Claremont, 2015. http://scholarship.claremont.edu/cmc_theses/1007.
Повний текст джерелаАнотація:
Participants in the NFL gambling market can largely be divided into two distinct groups: informed bettors (“Sharps”) and uninformed bettors (“Squares”). Empirical and anecdotal evidence suggest that the dynamic between Sharp and Square bettors is very similar to that between institutional and retail investors. Professionals tend to be far better informed and utilize rational betting/investing strategies while individuals exhibit biases which perpetuate irrational strategies and therefore pricing inefficiencies. This study finds that uninformed participants in financial markets and the NFL betting market do share similar biases, and that these biases can be exploited by informed participants to generate positive excess returns. The ability of Sharp bettors to generate excess returns, much like professional investors, is well covered in academic research. This study adds to the existing literature by analyzing whether “Follower” bettors can achieve statistically significant excess returns and higher than expected winning percentages by identifying reverse line movements and imitating the bets of Sharp gamblers.
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Burguière, Eric. "Rôle du cervelet dans la navigation : étude du mécanisme cellulaire de dépression synaptique à long terme des fibres parallèles." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2006. http://tel.archives-ouvertes.fr/tel-00129346.
Повний текст джерелаАнотація:
Récemment, il a été proposé que le cervelet participe à l'acquisition de fonctions cognitives telle que la navigation. Un des mécanismes de plasticité synaptique du cervelet, la Dépression synaptique à Long Terme hétérosynaptique des fibres parallèles (DLT), est déjà connu pour être impliqué dans les apprentissages moteurs. L'objectif de ce travail de thèse était de déterminer si cette DLT participe également à l'acquisition d'une tâche de navigation. A l'aide de tests de navigation développés dans l'équipe, j'ai étudié les performances de souris transgéniques L7-PKCI dont ce mécanisme de DLT est altéré. Dans ces tests, les souris L7-PKCI étaient déficientes dans la capacité à élaborer une trajectoire efficace pour rejoindre leur but. Ces résultats suggèrent qu'un rôle essentiel du cervelet dans la navigation, et plus particulièrement de la DLT, est d'adapter en permanence la sortie motrice afin d'effectuer une trajectoire optimale.
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Rattan, Amanpreet. "Balancing of Parallel U-Shaped Assembly Lines with Crossover Points." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/88031.
Повний текст джерелаАнотація:
This research introduces parallel U-shaped assembly lines with crossover points. Crossover points are connecting points between two parallel U-shaped lines making the lines interdependent. The assembly lines can be employed to manufacture a variety of products belonging to the same product family. This is achieved by utilizing the concepts of crossover points, multi-line stations, and regular stations. The binary programming formulation presented in this research can be employed for any scenario (e.g. task times, cycle times, and the number of tasks) in the configuration that includes a crossover point. The comparison of numerical problem solutions based on the proposed heuristic approach with the traditional approach highlights the possible reduction in the quantity of workers required. The conclusion from this research is that a wider variety of products can be manufactured at the same capital expense using parallel U-shaped assembly lines with crossover points, leading to a reduction in the total number of workers.M. S.
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Pao, Hsueh-yuan 1954. "ELECTROMAGNETIC SCATTERING FROM A BRANCH LINE IN A PARALLEL PLATE WAVEGUIDE (METHOD OF MOMENTS, TRANSIENT FIELDS)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276837.
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Jiang, Wei. "A Map-Reduce-Like System for Programming and Optimizing Data-Intensive Computations on Emerging Parallel Architectures." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343677821.
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Liu, Yung-chen, and 劉勇辰. "“Parallel Line”." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/7gdu2c.
Повний текст джерелаАнотація:
碩士國立臺北藝術大學
劇本創作研究所
99
“Parallel Line” is a play about three story lines twisting together, intersecting and crossing to each other. The narrative skill is in a fragmental way, but the three lines of story can be overlapped on one special angle. It can be all tracing back to a murder case at the beginning. And all the roles in the play were already dead, which more like some everlasting revenants. And they are murmuring one after another memory about their experiences, which were full of distress and horror in their lives. And in the darkest purgatory, all the souls are scouring for the last pieces of kindness and love in the catastrophic desperation.
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Oh, Juhee. "The 38th Parallel: Penetrating the Line." Thesis, 2007. http://hdl.handle.net/10012/3266.
Повний текст джерелаАнотація:
In July 1953, the armistice ended the Korean War that lasted for three years and established the Demilitarized Zone on either side of the demarcation line as a buffer between the two countries to prevent further military confrontation. However, the two sides remain at odds for half a century, and, despite the armistice, a state of war still exists between the two Koreas. As Koreans have dreamed of a united nation, the division has been described as a ‘temporary’ term to Koreans, yet the process of it has been much more obscure. Half a century has passed by, and South Korea has become a nation in which all facets of economic, political, and cultural identity are delineated in opposition to North Korea. What the future was supposed to present to Koreans has shifted relentlessly creating a disparity between the individual and national dreams. With repetitive see-saw events of national tension and reconciliation, individuals find themselves in an ambivalent position between series of oppositions: people and state, real and unreal, unification and national division. Multiple narratives crossover, creating confusion of whether the ultimate dream of Korea is even appropriate.
The thesis examines the two opposing conditions: the idealized dream of homogeneity, and the factual reality of heterogeneity. Four series of investigations are presented in this thesis: the condition, the cause, the response, and the location of the individual. First, the disparity between the two Koreas illustrates the external conditions of the situation. Then an investigation of the Korean identity is presented to analyze the cause of the condition. The indigenous identity of Korea and the desire to preserve it are presented as the creative forces behind the dichotomy of Korea. The ambivalence of the individual is understood as a response such conditions. The concept of ‘Han’ is employed as a possible vehicle of understanding Korean cultural despondency. Finally the design exploration of a very significant archaeological site in the Demilitarized Zone is undertaken in order to mediate the disparity between the Korean dream and reality for the individual. The design is intended to locate the individual within the Korean pathology. Playing on the previously studied Korean conditions, the design is an amplified display of the opposing conditions which will enable the individual to face the ambivalence of today’s Korea. The thesis does not suggest the solution or envision the end but aims to meditate and negotiate the present moment. It is not my intention to force either fantasy or reality as an absolute answer, but to create an understanding of both conditions in hopes that Koreans can start to break their ambivalence regarding their national reunification.
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謝仲安. "Modifications of Parallel Coupled Line Filters." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/32711521072628721276.
Повний текст джерелаАнотація:
碩士國立臺灣科技大學
電子工程系
89
Recently, because of the booming of global communication market, RF circuits have been applied in many of the communication systems such as IEEE 802.11G, Bluetooth, and GSM. Furthermore, RF circuits and some system components like RF Amplifier, Filter, Mixer, and Oscillator compose most of the fundamental elements of the communication systems. Thus, the RF circuit technologies play an important role in the development of the communication systems. Considering the RF circuit technologies, the micro-strip line is the basic and popular transmission line because of its simple architecture, cost effective, and easy to apply in the print circuit technology. Therefore, we chose the micro-strip line to design the band pass filter and the thesis is written for improving the filter characteristic. The design of the band pass filter is based on the coupling theory of the parallel-coupled microstrip line structure. In the following chapters, methods for reducing the second pass band response were proposed. All e examples in the thesis were performed in real circuits and circuit tested data were compared with the related simulation results and related theories.
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Jeng, Wen-Chang, and 鄭文昌. "Line-parallel Processing of Image Array for Straight Line Detection." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/64266620445093700886.
Повний текст джерелаАнотація:
碩士國立中正大學
電機工程研究所
87
In this thesis, a line-parallel array processor scheme utilizing the Hough transform for straight-line detection is proposed. This processor scheme can process the input image row by row or column by column and detect the positions of line and line segments efficiently and fast. Each processing unit performs only a 10-bits integer addition and hence does not need complicated circuits and more operations. The results of the Hough transform are stored in shift registers. Because each shift register is 1-bit, the number of circuits is more less. A software program is designed to simulate the hardwire structure of the array processors and shows good performance. The analysis indicates that our scheme is better than other straight-line detection array processors in terms of speed and area-time product.
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Fu, Ying-Chi, and 傅英齊. "Parallel computing framework for life-cycle maintenance optimization of RC buildings." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/gbtwm9.
Повний текст джерелаАнотація:
碩士國立臺灣科技大學
營建工程系
102
Life-cycle maintenance plays an important role for buildings to sustain seismic hazard. This issue is particularly serious in Taiwan because of the frequency of earthquakes. In Taiwan, many buildings are made of reinforced concrete (RC). Proper way and timing to perform maintenance and retrofit works for deteriorating RC buildings can extend the life of buildings as well as reduce the likelihood of damage when earthquakes strike. The maintenance and retrofit works, however, must be performed under the constraint of budget. The present study improves a previous decision-making supporting system of life-cycle maintenance strategies for deteriorating RC buildings, addressing seismic hazard. The decision-making system simulates the deterioration process of RC buildings by using Monte Carlo simulation (MCS). According to the simulation results, the system employs multi-objective particle swarm optimization (MOPSO) algorithm to search for optimal maintenance strategies in terms of various objective functions: minimizing life-cycle maintenance cost, minimizing failure probability caused by earthquakes, minimizing spalling probability of concrete cover, highest reasonability of maintenance actions, and minimizing times of maintenance works. The present study contributes by significantly reduce the computation time of the original decision-support system, which would otherwise impede the usage in practice. This is achieved by using parallel computing techniques to expedite the computation process. For MCS, we simply distribute the computation to a number of computing cores since random samples may be evaluated independently. For MOPSO, we develop four different communication models to select global best solutions for further search. The communication models are pure distribution, master-slave, diffusion, and island models. The performance and scalability of these models are compared in terms of the computation time and the hyper-volume of the final Pareto front. A practical case is used to demonstrate the proposed models and their performance. It is shown that the diffusion model, which has the best scalability among the four models, can achieve a super-linear speedup as the computational speed can be increased to 454 times when the number of computing cores is 40.
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ZHU, QING-LONG, and 朱慶隆. "A study on the life test and parallel operation of UPS." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/21063660380696736553.
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