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1
Alfadda, Abdullah Ibrahim A. "Temporal Frame Difference Using Averaging Filter for Maritime Surveillance." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/56583.
Full textAbstract:
Video surveillance is an active research area in Computer Vision and Machine Learning. It
received a lot of attention in the last few decades. Maritime surveillance is the act of effective
detection/recognition of all maritime activities that have impact on economy, security or
the environment. The maritime environment is a dynamic environment. Factors such as
constant moving of waves, sun reflection over the sea surface, rapid change in lightning due
to the sun reflection over the water surface, movement of clouds and presence of moving
objects such as airplanes or birds, makes the maritime environment very challenging. In
this work, we propose a method for detecting a motion generated by a maritime vehicle
and then identifying the type of this vehicle using classification methods. A new maritime
video database was created and tested. Classifying the type of vehicles have been tested by
comparing 13 image features, and two SVM solving algorithms. In motion detection part,
multiple smoothing filters were tested in order to minimize the false positive rate generated
by the water surface movement, the results have been compared to optical flow, a well known
method for motion detection.<br>Master of Science
2
Zoccola, Gregg. "Effect of conditioning on the performance of a plate and frame filter press." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43077.
Full textAbstract:
Experiments were performed on samples of alum,
anaerobically digested, and aerobically digested sludges
to determine optimum polymer dosages for various mixing
intensities produced during conditioning by a high-stress
mixing unit. Mean velocity gradient (G) values were
established for each of the mixing speeds used ranging
from 250 sec -1 to 4,000 sec-1. Using the optimum
conditioning dosages determined each mixing speed,
batches of optimally, conditioned sludge were introduced
into a pilot scale plate and frame filter press. Filtrate
volume per unit time and final cake solids were used to
characterize the press performance. Results indicated
that filter press, performance can be optimized by
selecting mixing. speeds during conditioning that simulate
the shear conditions produced in the filter press during
operation. It was shown that press performance was
substantially reduced using sludge conditioned at a mixing
speed of 200 rpm, corresponding to a Gt equal to 17,000.
Tests using mixing speeds of 400 rpm and 1800 rpm
corresponding to Gt values of 32,000 and 230,000,
respectively indicated better performance and, thus, the
filter press is thought to generate Gt values within this
range. A substantial increase in polymer requirements is shown for sludge conditioned at
a mixing speed of 1800 rpm, and therefore,
it was concluded that sludge
conditioned at mixing speed of 400 rpm best
characterized the filter press producing optimum
operational conditions. It was also postulated that the
filter press may not be characterized by a single Gt
value, but, by a range of values dependent on press run time.<br>Master of Science
3
Mohamed, Khaled Mohamed Ahmied. "A Collaborative Adaptive Wiener Filter for Image Restoration and Multi-frame Super-resolution." University of Dayton / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1426536832.
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Karam, Christina Maria. "Acceleration of Non-Linear Image Filters, and Multi-Frame Image Denoising." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1575976497271633.
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Miller, Amanda M. "Development of a Lower Body Sensor Harness for Posture Tracking for Nursing Personnel." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1562672463147447.
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Mahmood, Salih Qasim. "Behavior of Lap Shear Connections with Thermally Insulating Filler Plates." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/4159.
Full textAbstract:
This research consists of experimental load tests and numerical simulations of structural steel connections with various filler materials to study the effect of non-steel fillers on the connection strength. Non-steel fillers are used in the steel connections to provide thermal insulation by reducing thermal bridging. Eight specimens having steel and polypropylene filler plates of various thicknesses were tested in the laboratory. The collected data were compared to a Finite Element Analysis (FEA) using ABAQUS to validate the numerical results. After validation, three parametric studies were conducted using ABAQUS to provide insight into general behavior of connections with a variety of fillers that could be used as thermal breaks. In addition, an extreme case of having air gaps instead of alternative fillers was also considered.
The Research Council on Structural Connections (RCSC 2014) suggests a reduction in the bolt shear strength when undeveloped fillers with a thickness of more than 0.25 inch are used while using any non-steel material is prohibited due the limited research available.
Most research studies have investigated the mechanical behavior of thermal breaks in either end-plate moment connections or slip-critical connections. No data is available for thermal breaks in bearing-type connections up to failure.
This research aims to study the effects of filler material properties such as modulus of elasticity and strength on bolt strength, as well as investigate whether the current equation in RCSC 2014 is applicable for alternative filler materials like polypropylene that has less than 0.5% of the steel modulus of elasticity and less than 10% of steel strength.
7
Vadde, Susheel Reddy. "Improving Tissue Elasticity Imaging Using A KALMAN Filter-Based Non-Rigid Motion Tracking Algorithm." Youngstown State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1310141393.
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Selvakumar, Vinodhkumar, Samuel Nemalladinne, and Premkumar Arumugam. "Analysis of LTE Radio Frame by eliminating Cyclic Prefix in OFDM and comparison of QAM and Offset-QAM." Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-21602.
Full textAbstract:
Spectral efficiency is the key factor for the development of future wireless communications. Orthogonal Frequency Division Multiple Access (OFDMA) is the multiple access technology used at physical layer of latest wireless communication technologies. Anything on the improvement or overcoming the disadvantage of the present system will be considered for the future wireless systems. Long Term Evolution (LTE) is one of the 4th generation wireless communications and it is taken as the reference system in this thesis. The main concern of this thesis is to analyze the LTE radio frame. We designed and simulated the OFDM system with cyclic prefix, its Bit Error Rate (BER) is verified by changing the Signal to Noise Ratio (SNR) value and we investigated the OFDM system by eliminating the cyclic prefix. By eliminating cyclic prefix bandwidth efficiency is achieved, though using cyclic prefix in OFDM has more advantages. Filter banks are used to compensate the advantages of cyclic prefix when it is removed. Introducing Offset in QAM results in less distortion and amplitude fluctuations. We designed, simulated and compared the QAM digital modulation with Offset-QAM digital modulation its BER vs. SNR are verified using simulations on MATLAB.
9
Lynch, Daniel P. "The effect of polymer dose and mixing intensity on sludge dewatering with a plate and frame filter press." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/44124.
Full textAbstract:
<p>Experiments were performed with anaerobically digested sludge and a plate and frame filter press
to determine filter press performance over a range of polymer doses and under a variety of sludge
and polymer mixing conditions. In addition, bench-scale polymer dosing and mixing experiments
were conducted with the same sludge samples to determine the relationship between the bench-scale
tests and actual plate and frame filter press performance. Dewatering rate was measured in bench-
scale experiments with a Capillary Suction Time (CST) device and dewatering rate in pilot-scale
experiments was quantified by measuring the volume of filtrate from the plate and frame press.
The dimensionless quantity, Gt, was used to measure total mixing intensity input where G was the
mean velocity gradient and t was the mixing time for the sludge and polymer.</p>
<p>
The performance of the plate and frame filter press was optimized by predicting polymer dose with
a bench-scale mixing device. For the plate and frame filter press used in this study, the polymer
dose was selected by finding the optimum polymer dose for the bench-scale mixing system set at a
Gt value of 30,000. The sludge and polymer were mixed with a Gt value of 5000 prior to introduction
to the filter press. The polymer dosing and mixing scheme that was developed for the filter
press in this study indicates that the filter press imparts some shear (G) on the sludge and that
polymer must be provided to reagglomerate fractured sludge particles. An estimate of the Gt value
for the filter press that was used in this study is 15,000 to 40,000.</p><br>Master of Science
10
Demirkutlu, Eyyup. "Output Voltage Control Of A Four-leg Inverter Based Three-phase Ups By Means Of Stationary Frame Resonant Filter Banks." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608151/index.pdf.
Full textAbstract:
A method for high performance output voltage control of a four-leg inverter based three-phase transformerless UPS is proposed. Voltage control loop is employed and the method employs stationary frame resonant filter controllers for the fundamental and harmonic frequency components. A capacitor current feedback loop provides active damping and enhances the output voltage dynamic performance. The
controller design and implementation details are given. Linear and nonlinear loads for balanced and unbalanced load operating conditions are considered. The steadystate
and dynamic performance of the UPS are investigated in detail. A scalar PWM method with implementation simplicity and high performance is proposed and implemented. The control and PWM methods are proven by means of theory,
simulations, and experiments.
11
Bayer, Stefan [Verfasser], and Bernd [Gutachter] Edler. "Time Warped Filter Banks and their Application for Frame Based Processing of Harmonic Audio Signals / Stefan Bayer ; Gutachter: Bernd Edler." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2017. http://d-nb.info/1151399515/34.
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Wadi, Husam. "Structural behaviour of lateral load-carrying capacity of timber frame walls filled with hemp concrete : experimental study and numerical analysis." Thesis, Université Clermont Auvergne (2017-2020), 2019. http://www.theses.fr/2019CLFAC038/document.
Full textAbstract:
Les projets de construction sont aujourd'hui confrontés à des défis importants pour réduire la grande quantité d'énergie employée quotidiennement pour les utilisations tels que le chauffage, l'électricité et l'eau chaude dans les bâtiments résidentiels et commerciaux, en particulier en Europe. De nombreux règlements de construction encouragent l'utilisation des matériaux biosourcés puisqu’ils semblent avoir des propriétés physiques supérieures en terme d'efficacité énergétique dans le secteur de la construction. L'utilisation de matériaux à faible teneur en carbone dans des structures telles que le béton de chanvre améliore le niveau d'isolation ainsi que l'absorption acoustique et diminue le poids de la structure du bâtiment, car ce matériau naturel fournit un agrégat à faible densité. Cette étude concerne le comportement mécanique de murs en bois, réalisés avec des planches croisées en bois CLT et des murs à panneaux d’OSB, sous l’effet de forces horizontales de cisaillement. Une approche théorique a été proposée pour prédire la performance latérale de la paroi CLT par rapport aux charges latérales ainsi qu’une comparaison entre les résultats théoriques et expérimentaux a été effectuée. Des essais expérimentaux ont été réalisés sur des murs de bois ayant deux formes différentes pour étudier et mettre en évidence les paramètres qui affectent significativement la résistance latérale du béton de chanvre en tant que matériau de remplissage. Des montants verticaux et des éléments de contreventement diagonaux de 2,5 mètres de hauteur et 1,25 mètres de largeur soumis à une compression ont été réalisés dans cette étude . Les résultats ont montré que le béton de chanvre apporte une légère contribution contre les charges latérales dans les murs verticaux de 1,25 mètres de largeur, ce qui signifie qu'une diminution de la largeur du mur de bois diminue significativement la contribution du béton de chanvre contre les charges latérales. Trois murs en bois de différentes longueurs (1,2 mètres, 1,6 mètres et 2,4 mètres) remplis de béton de chanvre ont été étudiés numériquement dans cette étude. D'après les résultats numériques, il était évident que la largeur du mur en bois joue un rôle principal dans la résistance latérale du béton de chanvre : lorsque la largeur du mur augmente, la résistance latérale du béton de chanvre s’accroît considérablement. De plus, le contact et la liaison entre le chanvre et les montants en bois affectent totalement la capacité de la résistance latérale du béton de chanvre en tant que matériau de remplissage dans les murs en bois<br>Construction projects nowadays face significant challenges to reduce the large amounts of daily energy usage for utilities such as heating, electricity and hot water in residential and commercial buildings – especially in Europe. Many building regulations encourage the use of bio-based materials with superior physical properties for energy efficiency in the construction sector. The use of low-carbon material in structures such as hemp concrete, improves the insulation level and sound absorption and simultaneously decreases the weight of the building structure, as this natural material provides low-density aggregate. This study aimed to investigate the mechanical behaviour of timber frame walls against lateral loads. Cross-laminated timber walls (CLT) and Oriented Strand Board (OSB) were used in this study in order to examine the global lateral strength of timber walls. A theoretical approach has been proposed to predict the lateral performance of CLT wall against lateral loads and a comparison between the theoretical and experimental results has been conducted. Experimental testing was undertaken on a full-size example of two different designs of timber walls to investigate and highlight the parameters that significantly affect the lateral resistance of hemp concrete as infill material. Vertical studs and diagonal bracing elements under compression were used in this study, with dimensions of 2.5m height and 1.25m length. The results showed that hemp concrete makes a slight contribution against lateral loads in vertical stud timber wall of length 1.25m, which means that decreasing the length of timber wall significantly decreased the hemp concrete contribution against lateral loads. Three timber walls with different lengths (1.2m, 1.6m and 2.4m) filled with hemp concrete have been examined numerically in this study. Based on the numerical results, it was obvious that the length of the timber wall plays a major role in the lateral strength of hemp concrete, as increasing the wall length significantly increased the lateral strength of hemp concrete. Also, the contact and bonding between hemp material and timber studs significantly affected the lateral load carrying capacity of hemp concrete as infill material in timber frame walls
13
Granata, Eliana. "Automatic classification of frames from wireless capsule endoscopy." Thesis, Università degli Studi di Catania, 2011. http://hdl.handle.net/10761/188.
Full textAbstract:
Wireless Capsule Endoscopy (WCE) is a technical break-through that allows to produce a video of the entire intestine without surgery.
Interpretation of WCE video is nowadays largely left to the visual inspection of a medical specialist. This tedious and time consuming task could greatly benefit from techniques that automatically classify and exclude from further processing the non-relevant frames in the video.
In this dissertation several distinctive methods to tackle the problem of automatic classification of image frames belonging to a WCE video are presented. In particular we focuses two areas: sudden changes discrimination and intestinal motility detection in a WCE video.
The achieved high detection accuracy of the proposed systems have provided an indication that such intelligent schemes could be used as a supplementary diagnostic tool in endoscopy.
14
Bayreuther, Moritz, Jamin Cristall, and Felix J. Herrmann. "Computation of time-lapse differences with 3D directional frames." Society of Exploration Geophysicists, 2005. http://hdl.handle.net/2429/525.
Full textAbstract:
We present an alternative method of extracting production related differences from time-lapse seismic data sets. Our method is not based on the actual subtraction of the two data sets, risking the enhancement of noise and introduction of artifacts due to local phase rotation and slightly misaligned events. Rather, it mutes events of the monitor survey with respect to the baseline survey based on the magnitudes of coefficients in a sparse and local atomic decomposition. Our technique is demonstrated to be an effective tool for enhancing the time-lapse signal from surveys which have been cross-equalized
15
Jeong, Sang Min. "Analysis of Vibration of 2-D Periodic Cellular Structures." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7122.
Full textAbstract:
The vibration of and wave propagation in periodic cellular structures
are analyzed. Cellular structures exhibit a number of desirable
multifunctional properties, which make them attractive in a variety of
engineering applications. These include ultra-light structures, thermal
and acoustic insulators, and impact amelioration systems, among others.
Cellular structures with deterministic architecture can be considered
as example of periodic structures. Periodic structures feature unique
wave propagation characteristics, whereby elastic waves propagate only
in specific frequency bands, known as "pass band", while they are
attenuated in all other frequency bands, known as "stop bands". Such
dynamic properties are here exploited to provide cellular structures
with the capability of behaving as directional, pass-band mechanical
filters, thus complementing their well documented multifunctional
characteristics.
This work presents a methodology for the analysis of the dynamic
behavior of periodic cellular structures, which allows the evaluation
of location and spectral width of propagation and attenuation regions.
The filtering characteristics are tested and demonstrated for
structures of various geometry and topology, including cylindrical
grid-like structures, Kagom and eacute; and tetrhedral truss core lattices.
Experimental investigations is done on a 2-D lattice manufactured out
of aluminum. The complete wave field of the specimen at various
frequencies is measured using a Scanning Laser Doppler Vibrometer
(SLDV). Experimental results show good agreement with the methodology
and computational tools developed in this work. The results demonstrate
how wave propagation characteristics are defined by cell geometry and
configuration. Numerical and experimental results show the potential of
periodic cellular structures as mechanical filters and/or isolators of
vibrations.
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Le, Mené Guigourès Marine. "L'acquisition d'un paradigme : éclairage multidimensionnel sur la mise en place des déterminants chez quatre enfants entre 1;6 et 3;5." Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCA031/document.
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De par leur présence à l’interface entre plusieurs domaines linguistiques (phonologie, morpho-syntaxe, sémantique ou pragmatique), les déterminants ont depuis longtemps suscité l’intérêt des chercheurs en acquisition. On trouve ainsi de nombreux travaux portant notamment sur les contraintes phono-prosodiques, lexico-syntaxiques, sémantiques ou pragmatiques à l’œuvre dans le processus d’acquisition de ces formes, mais peu d’entre eux ont cherché à proposer une analyse combinée de ces facteurs, en tenant compte à la fois des morphèmes adultes et des formes de transition (omissions et fillers). Nous avons donc souhaité, dans le cadre de ce travail, décrire l’émergence des déterminants et de leurs proto-formes en essayant de saisir, dans une perspective multidimensionnelle intégrant à la fois des facteurs distributionnels et fonctionnels, quels facteurs influencent le plus ce processus, et à quelles périodes.Cette thèse repose sur l’analyse d’un corpus longitudinal de quatre enfants, âgés de 1;6 pour le plus jeune lors de la première séance sélectionnée à 3;5 pour le plus âgé lors de la dernière. Nous avons repéré au sein de ce corpus tous les noms produits par les enfants ainsi que les formes les précédant et chaque syntagme a fait l’objet d’une analyse phono-prosodique, lexico-syntaxique, sémantique, pragmatique et discursive.Les résultats montrent d’une part que tous les facteurs distributionnels peuvent - à des degrés différents - influencer la production des formes pré-nominales, et d’autre part, que les usages que les enfants font des formes témoignent d’une sensibilité précoce à certains contrastes pragmatico-discursifs. Toutefois, aucun des facteurs pris séparément n’a permis de rendre compte de l’intégralité des productions des enfants. L’analyse conjointe de ces facteurs distributionnels et fonctionnels a confirmé les tendances dégagées au préalable et a mis en évidence l’influence d’un ensemble de facteurs (et en particulier, phono-prosodique, syntaxique et pragmatique) plus que d’un facteur unique ou prédominant tout au long du processus d’acquisition des déterminants<br>Given their presence at the crossroads of different linguistic fields (phonology, morphosyntax, semantics or pragmatics), determiners have for a long time aroused the interest of language acquisition researchers. We thus find several studies dealing with the phono-prosodic, lexical and syntactic, semantic or pragmatic constraints involved in the acquisition of determiners. But only few of them have provided a combined analysis of all these factors, considering both adult morphemes and transitional forms (omissions and filler syllables). Our study aims to describe the emergence of filler syllables and determiners and understand - in a multidimensional perspective examining simultaneously distributional and functional factors - which factors may affect the acquisition process, and over which periods of time.Our study is based on a corpus of four children, aged from 1;6 for the youngest in the first selected session to 3;5 for the eldest in the last session. We first identified all the noun phrases produced in the data and each occurrence was then analysed according to phono-prosodic, lexical, syntactic, semantic, pragmatic and discursive factors.Our results show that each distributional factor may influence, at different degrees, the production of pre-nominal forms and that children’s use of forms shows early sensitivity to pragmatic factors. However, none of the factors taken separately have accounted for all of the children’s productions. An additional combined analysis of both distributional and functional factors has supported the initial trends and highlighted the influence of a series of factors (and in particular, phono-prosodic, syntactic and pragmatic), more than a single and predominant one throughout the acquisition process of determiners
17
Lösler, Michael, Torsten Lossin, Alexander Neidhardt, and Rüdiger Lehmann. "Untersuchung zur automatisierten Bestimmung des IVS-Referenzpunktes am TWIN Radioteleskop Wettzell." Hochschule für Technik und Wirtschaft Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:520-qucosa-159760.
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Die Verknüpfung von geodätischen Raumtechniken wie GNSS, DORIS, SLR oder VLBI zur Ableitung eines geodätischen Referenzrahmens wie dem ITRF gelingt erst durch sogenannte Kolokationsstationen. Die geometrischen Beziehungen zwischen den betriebenen Raumtechniken sind dabei aus präzisen lokalen Vermessungen abzuleiten. Es wird ein Konzept zur automatisierten Bestimmung des IVS-Referenzpunktes am TWIN Radioteleskop Wettzell vorgestellt. Erste Untersuchungsergebnisse werden präsentiert.
18
Roos, Yvonne. "Wiedervereinigung Koreas Ein Vergleich mit Deutschland /." St. Gallen, 2007. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/04605010003/$FILE/04605010003.pdf.
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Lösler, Michael, Torsten Lossin, Alexander Neidhardt, and Rüdiger Lehmann. "Untersuchung zur automatisierten Bestimmung des IVS-Referenzpunktes am TWIN Radioteleskop Wettzell." Hochschule für Technik und Wirtschaft Dresden, 2014. https://htw-dresden.qucosa.de/id/qucosa%3A23284.
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Die Verknüpfung von geodätischen Raumtechniken wie GNSS, DORIS, SLR oder VLBI zur Ableitung eines geodätischen Referenzrahmens wie dem ITRF gelingt erst durch sogenannte Kolokationsstationen. Die geometrischen Beziehungen zwischen den betriebenen Raumtechniken sind dabei aus präzisen lokalen Vermessungen abzuleiten. Es wird ein Konzept zur automatisierten Bestimmung des IVS-Referenzpunktes am TWIN Radioteleskop Wettzell vorgestellt. Erste Untersuchungsergebnisse werden präsentiert.
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Král, Jiří. "Napěťová, deformační a spolehlivostní analýza svařované rámové konstrukce." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230939.
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Diploma thesis deals with creating of computational model of welded frame to perform strain-stress analysis. Thesis aims at verification of welded joints and their possible changes. The next goal is to compare stresses obtained from calculation with respect to welding standard and FEM analysis.
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Erny, Matthias. "Brennpunkt Jerusalem welchen Einfluss hat Israels Sperranlage auf die Jerusalem-Frage und folglich auf den Friedensprozess? /." St. Gallen, 2008. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/05606355001/$FILE/05606355001.pdf.
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Maggard, William P. "Adaptive control of flexible systems using self-tuning digital notch filters." Ohio : Ohio University, 1987. http://www.ohiolink.edu/etd/view.cgi?ohiou1183056097.
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Königk, Torben. "Sea ice export through Fram Strait : variability and interactions with climate = Meereisexport durch die Framstraße /." Hamburg : Max-Planck-Institut für Meteorologie, 2005. http://mpimet.mpg.de/de/web/download.php?src=max_erdsystem&file=pdfupload&id=19&filename=WEB_BzE_12.pdf.
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Heber, Dominici Victoria Blanca. "Design Improvement of a Water Recirculation System for a Cooling Process in a Tobacco Manufacturing Plant." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
Find full textAbstract:
In the industrial sector, it is possible to observe unexpected behaviours of processes, which were not anticipated in the design stage. Such is the case of a secondary cooling process existing within a tobacco manufacturing plant, which was initially designed to cool and recover clean process water with chilled water for posterior recirculation into the main cooling process. It has been observed that under the design flowrates the plate and frame heat exchanger where the process water is cooled is rapidly clogged by suspended solids coming from the main cooling process, resulting in both high maintenance costs and frequent product ion downtime due to necessary intervention for mechanical cleaning.
The aim of this thesis project is to evaluate and design process improvements providing sustainable solutions, reducing the operative costs existing nowadays and avoiding any damage on the plate and frame heat exchanger.
Any process design solution asks for a capital investment, which was also considered in the overall analysis of the alternatives within this study.
Within the evaluation of the possible modifications, solid/liquid separation was mostly studied, together with the selection and design of an appropriate heat exchanger for the given process. After a preliminary screening, a reduced number of alternatives were analysed in detail to assess their possible application. Few alternatives to solving the problem have been studied, in spite of having a wide variety of options.
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Engvall, Aida, and Viviann Le. "Misstag eller konspiration? : En kvalitativ gestaltningsanalys av Fria Tiders skildringar av mordet på före detta statsminister Olof Palme." Thesis, Linnéuniversitetet, Institutionen för medier och journalistik (MJ), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-75796.
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The Swedish prime minister, Olof Palme was murdered in the middle of the street in the heart of Stockholm, by an unknown perpetrator on the 28th of February 1986. Even though it has been 32 years since the death of the former prime minister, a keen interest of the murder within the media still exists and has not decreased over the years. By conducting a qualitative text analysis, this paper examined how the murder of Olof Palme is described in an alternative medium; Fria Tider. The aim of this study is to problematize citizen journalism in Sweden. With the basis of the framing theory and agenda setting, eight texts were chosen from the alternative medium Fria Tider, an online newspaper. The authors conducted a framing analysis to identify which frameworks were most prominent in the way of describing the murder. The result of this study showed that three frames dominated; a conspiracy of several actors, the police's responsibility, and the solution is near. The authors found that Fria Tider produced several individuals and institutions as suspected of the murder of Olof Palme in these frameworks. While these frameworks can be seen as problematic, this study cannot conclude that it is problematic to read opinions other than what traditional media give. Therefore, this study cannot problematize citizen journalism.
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Zapletal, Ondřej. "Moderní kódování řečového signálu pomocí přeparametrizovaných modelů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218550.
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The theoretical contents of this thesis are studies of overcomplete models. Those are the models of signals, on which is set for their parametrization more variables, than it's necessary and consequently there's computed so-called sparse solution via iteration algorithms. A goal of this analysis is a selection just of the considerable (sparse) parameters. The theory is based on a linear algebra, vector spaces, bases and so-called frames. The task of the individual project of this thesis is a description and simulation of two speech coders: a classical coder based on linear predictive speech coding and a coder, that's making use of overcomplete stochastic ARMA processes models. A part of their realization is to simulate their decoders and a analyze their reconstruction quality. For their realization there is used MATLAB and an overcomplete models' library (toolbox frames).
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Sagha, Hossein. "Development of innovative robust stability enhancement algorithms for distribution systems containing distributed generators." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/91052/1/Hossein_Sagha_Thesis.pdf.
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This project was a step forward in improving the voltage profile of traditional low voltage distribution networks with high photovoltaic generation or high peak demand. As a practical and economical solution, the developed methods use a Dynamic Voltage Restorer or DVR, which is a series voltage compensator, for continuous and communication-less power quality enhancement. The placement of DVR in the network is optimised in order to minimise its power rating and cost. In addition, new approaches were developed for grid synchronisation and control of DVR which are integrated with the voltage quality improvement algorithm for stable operation.
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Štefanisko, Ivan. "Integration of inertial navigation with global navigation satellite system." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221167.
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This paper deals with study of inertial navigation, global navigation satellite system, and their fusion into the one navigation solution. The first part of the work is to calculate the trajectory from accelerometers and gyroscopes measurements. Navigation equations calculate rotation with quaternions and remove gravity sensed by accelerometers. The equation’s output is in earth centred fixed navigation frame. Then, inertial navigation errors are discussed and focused to the bias correction. Theory about INS/GNSS inte- gration compares different integration architecture. The Kalman filter is used to obtain navigation solution for attitude, velocity and position with advantages of both systems.
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Robotka, David. "Administrativní centrum." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372293.
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This diploma thesis deals with design of steel structure with composite steel-concrete floor structure of a office building.The building is located in Moravský Krumlov. The Office buidling consist of multi-storey building and an entrance atrium. The total ground plan's dimensions are 52,8m x 48,0m. The multi-storey building has 8 floor. The maximum heigh of the building is 25,32m above ground. The project is designed in two options. For winning variant is including check and it is performed a drawings with design and check assembly details and anchorage.
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Tylš, Ladislav. "Získávání dat z kamer." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217760.
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This thesis describes the principles of making application which is able to set and control camera. The first part describes basic camera connections and it explains definition and specification of camera’s features. The second part of my thesis describes implementation of application, which can use more cameras to image preview, image acquisition and to simply set of camera’s features. To implement the applications we can use MATLAB and C++BUILDER uses opencv libraries.
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Bobula, Marek. "Příspěvek k efektivnímu využití úzkopásmového rádiového kanálu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-233533.
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Předkládaná práce se soustředí na problematiku využívání úzkopásmového rádiového kanálu rádiovými modemy, které jsou určené pro průmyslové aplikace pozemní pohyblivé rádiové služby, specifikované v dominantní míře Evropským standardem ETSI EN 300 113. Tato rádiová zařízení se používají v kmitočtových pásmech od 30 MHz do 1 GHz s nejčastěji přidělovanou šířkou pásma 25 kHz a ve většině svých instalací jsou využívána ve fixních nebo mobilních bezdrátových sítích. Mezi typické oblasti použití patří zejména datová telemetrie, aplikace typu SCADA, nebo monitorování transportu strategických surovin. Za hlavní znaky popisovaného systému lze označit komunikační pokrytí značných vzdáleností, dané především vysokou výkonovou účinnosti datového přenosu a využívaní efektivních přístupových technik na rádiový kanál se semiduplexním komunikačním režimem. Striktní požadavky na elektromagnetickou kompatibilitu umožňují těmto zařízením využívat spektrum i v oblastech kmitočtově blízkým jiným komunikačním systémům bez nutnosti vkládání dodatečných ochranných frekvenčních pásem. Úzkopásmové rádiové komunikační systémy, v současnosti používají převážně exponenciální digitální modulace s konstantní modulační obálkou zejména z důvodů velice striktních omezení pro velikost výkonu vyzářeného do sousedního kanálu. Dosahují tak pouze kompromisních hodnot komunikační účinnosti. Úpravy limitů příslušných rádiových parametrů a rychlý rozvoj prostředků číslicového zpracování signálu v nedávné době, dnes umožňují ekonomicky přijatelné využití spektrálně efektivnějších modulačních technik i v těch oblastech, kde je prioritní využívání úzkých rádiových kanálů. Cílem předkládané disertační práce je proto výzkum postupů směřující ke sjednocení výhodných vlastností lineárních a nelineárních modulací v moderní konstrukci úzkopásmového rádiového modemu. Účelem tohoto výzkumu je efektivní a „ekologické“ využívání přidělené části frekvenčního spektra. Mezi hlavní dílčí problémy, jimiž se předkládaná práce zabývá, lze zařadit zejména tyto: Nyquistova modulační filtrace, navrhovaná s ohledem na minimalizaci nežádoucích elektromagnetických interferencí, efektivní číslicové algoritmy frekvenční demodulace a rychlé rámcové a symbolové synchronizace. Součástí práce je dále analýza navrhovaného řešení z pohledu celkové konstrukce programově definovaného rádiového modemu v rovině simulací při vyšetřování robustnosti datového přenosu rádiovým kanálem s bílým Gaussovským šumem nebo kanálem s únikem v důsledku mnohacestného šíření signálu. Závěr práce je pak zaměřen na prezentování výsledků praktické části projektu, v níž byly testovány, měřeny a analyzovány dvě prototypové konstrukce rádiového zařízení. Tato finální část práce obsahuje i praktická doporučení, vedoucí k vyššímu stupni využitelnosti spektrálně efektivnějších komunikačních režimů v oblasti budoucí generace úzkopásmových zařízení pozemní pohyblivé rádiové služby.
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Vestin, Albin, and Gustav Strandberg. "Evaluation of Target Tracking Using Multiple Sensors and Non-Causal Algorithms." Thesis, Linköpings universitet, Reglerteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-160020.
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Today, the main research field for the automotive industry is to find solutions for active safety. In order to perceive the surrounding environment, tracking nearby traffic objects plays an important role. Validation of the tracking performance is often done in staged traffic scenarios, where additional sensors, mounted on the vehicles, are used to obtain their true positions and velocities. The difficulty of evaluating the tracking performance complicates its development. An alternative approach studied in this thesis, is to record sequences and use non-causal algorithms, such as smoothing, instead of filtering to estimate the true target states. With this method, validation data for online, causal, target tracking algorithms can be obtained for all traffic scenarios without the need of extra sensors. We investigate how non-causal algorithms affects the target tracking performance using multiple sensors and dynamic models of different complexity. This is done to evaluate real-time methods against estimates obtained from non-causal filtering. Two different measurement units, a monocular camera and a LIDAR sensor, and two dynamic models are evaluated and compared using both causal and non-causal methods. The system is tested in two single object scenarios where ground truth is available and in three multi object scenarios without ground truth. Results from the two single object scenarios shows that tracking using only a monocular camera performs poorly since it is unable to measure the distance to objects. Here, a complementary LIDAR sensor improves the tracking performance significantly. The dynamic models are shown to have a small impact on the tracking performance, while the non-causal application gives a distinct improvement when tracking objects at large distances. Since the sequence can be reversed, the non-causal estimates are propagated from more certain states when the target is closer to the ego vehicle. For multiple object tracking, we find that correct associations between measurements and tracks are crucial for improving the tracking performance with non-causal algorithms.
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Tunková, Martina. "Městské lázně." Master's thesis, Vysoké učení technické v Brně. Fakulta architektury, 2010. http://www.nusl.cz/ntk/nusl-215713.
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Ngo, Babem Annette Flavie. "On localic convergence with applications." Diss., 2019. http://hdl.handle.net/10500/25922.
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Text in English<br>Submitted in partial fulfillment of a Master's Degree at the University of South Africa<br>Our main goal is to collate into a single document what is presently known regarding pointfree convergence. This will be done by exposing some well-known results on pointfree convergence in a much more simpler way. We will start to study the convergence and clustering of filters in frames in terms of covers and use this to characterise compact frames and some type of uniform frames. We will extend this study to a more general type of filters. We will then discuss convergence and clustering of filters on a locale, where a filter on a locale L is just a filter in the sublattice of all
the sublocales of L. This convergence has many applications like characterising compact locales
and also characterising sharp points which will also be studied. Finally, the latter concepts of
convergence and clustering will be reconciled with the previous one.<br>Mathematical Sciences
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Su, Kuo-Tien, and 蘇國添. "An Intra Frame Filter for Multimedia Networks with QoS Guarantee." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/70773402899566555427.
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KAVITA. "IMAGE DENOISING USING MOVING FRAME APPROACH BASED ON TRILATERAL FILTER." Thesis, 2018. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16523.
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Noise corrupts the images and in this manner their quality corrupts. This corruption incorporates concealment of edges, auxiliary points of interest, obscuring limits and so on. There are a few strategies to suppress the noise. The fundamental objective of denoising the image is to protect the critical element, for example, edges, limits and so on. Image compression separating is the way toward expelling noise which annoys image examination techniques. In a few applications like segmentation, denoising is intended to smooth homogeneous areas while safeguarding the shapes. Real-time denoising is required in a great deal of uses like picture guided careful intercessions, video examination and visual serving. Image denoising is finished by separating which can be comprehensively isolated into classes: straight sifting and nonlinear sifting. Mean sifting and Gaussian separating are the case of spatial denoising strategies. They are direct techniques which cause obscuring the images and all the while smother the subtle elements. Denoising is any signal processing strategy which reproduces a signal from a noisy one. Its will probably evacuate noise and safeguard valuable data.
Denoising means to diminish noise in homogeneous zones, while safeguarding picture shapes. Denoising is vital for pretreatment techniques, for example, question acknowledgment, division, arrangement and example investigation. Because of the extraordinary surface of ultrasound pictures, their denoising is especially troublesome. Noise lessening is the way toward expelling noise from the flag. Saving the points of interest of a picture and evacuating the irregular noise beyond what many would consider possible is the objective of picture denoising approaches. Numerous fruitful strategies for picture denoising have been produced till date.
v
Bilateral filtering is a case of nonlinear separating. It is a non-iterative technique. It joins space and range channels all the while. It preserves edge data while denoising. The possibility of reciprocal separating is the calculation of each pixel weight using a spatial piece and its increase utilizing an element of impact in the power space. This last can diminish the pixel weight with substantial power contrasts. By and by, under this shape the channel can't control spot noise. This channel may tend to over smooth edges. Then again, its range channel piece utilized pixel availability, and hence it couldn't be utilized straightforwardly for applications that in truth would overlook spatial connections. These channels go for smoothing the picture to evacuate some type of noise. Anyway it doesn't give agreeable outcomes, genuine dim levels are contaminated truly and the range channel can't work legitimately. The trilateral channel was acquainted as methods with decrease drive noise in pictures. The trilateral channel was reached out to be an angle protecting channel, including the nearby picture inclination into the separating procedure. For the most part, the parameters of Trilateral Filtering are generally dictated by experimentation by and by; along these lines bringing about additional time utilization. In any case, to build the merging rate and to enhance the denoising procedure, we have presented the altered trilateral sifting approach by the ideal determination of its parameters utilizing GWO calculation consequently in view of the denoising execution. At last, we will demonstrate the viability of proposed separating strategy by methods for examining with different noise models.
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陳立洲. "Study on the Gravity Check Dam of Reinforced Concrete Frame Filled with Sediment." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/79772069807375553272.
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碩士<br>國立中興大學<br>水土保持學系<br>87<br>To avoid the drawbacks of traditional check dam (i.e., mass usage of concrete, higher cost, and unbalance of heart hydraulic), this study proposed the design of "Gravity Check Dam of Reinforced Concrete Frame Filled with Sediment". This new design combines Counterfort Retaining Wall and reinforced concrete for their benefits of low cost and high tension-resistance. Four sections were included in the research: designs of dam configuration, analysis of stability, flume experiment, and cost analysis.
In the flume experiment of "Gravity Check Dam of Reinforced Concrete Frame Filled with Sediment ", the result was concluded by placing the dam model in the flow condition without sedimentation. The dam structure is stable and without movement under the following experimental condition: maximum flow discharge of 0.006 cms, flume slope of 3.55%, and overflow depth of 4.2cm.
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Li, Yuan-Shing, and 李源興. "Analysis of Three-Story Frame with Concrete-Filled Tube Columns and Buckling Restrained Braces." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/72873920289139848681.
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碩士<br>國立交通大學<br>土木工程系所<br>93<br>A 3-story frame with concrete-filled tube columns (CFT) and buckling restrained braces was tested in October 2003. The purposes of the test are discussing the seismic behavior of steel beam to CFT column connections and BRB in frame. For frame analysis and comparison of the result, nonlinear structural program, DRAIIN-2DX, is used. First step of analysis is modeling and simulating the sub-structure by DRAIN-2DX, then comparing the results with test. When the results of sub-structure model are matched with experiment, frame analysis is proceeded. Based on comparison of analysis and experiment, the results of simulating sub-structure are excellent, DRAIN-2DX can effectively predict the global stiffness and strength. For the frame analysis, the results of simulation in Phase I are fine. But because of the failure in the detail of frame, the error in simulating is added in Phase II. It is observed that considering the slab effect on the flexural strength of the steel beam leads to more accurate analysis results. Pushover analyses were performed to study the effect of joint stiffness of the panel zone on the nonlinear behavior of the frame. Compared to rigid joint, semi-rigid joint modeling results in slightly lower ultimate strength of the frame, but not the elastic stiffness of the frame.
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Ho, Shine-Uiong, and 何象鏞. "An Analytic Study of Pushover Analysis of RC Frame Structure In-filled with Walls." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/30180701185440761401.
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博士<br>國立中央大學<br>土木工程研究所<br>95<br>The recent advent of performance based design has brought the nonlinear static pushover analysis procedure to the forefront. Pushover analysis is a static, nonlinear procedure in which the magnitude of the structural loading is incrementally increased in accordance with a certain predefined pattern. With the increase in the magnitude of the loading, weak links and failure modes of the structure are found. Due to its simplicity, the structural engineering profession has been using the nonlinear static procedure (NSP) or pushover analysis. Modeling for such analysis requires the determination of the nonlinear properties of each component in the structure, quantified by strength and deformation capacities, which depend on the modeling assumptions. SAP2000, a state of the art, general purpose, three-dimensional structural analysis program, is used as a tool for performing the pushover. Pushover analysis of SAP2000 is carried out for either user-defined nonlinear hinge properties or default-hinge properties, available in the program based on the ATC-40 and FEMA-356 guideline. While such documents provide the hinge properties for several range of detailing, SAP2000 program may implement averaged values. The user needs to be careful; the misuse of default-hinge properties may lead to unreasonable results for existing structures. This paper studies the possible differences in the results of pushover analysis due to default and user-defined plastic hinge properties. The method for calculate user-defined plastic hinge properties of component, frame, brick wall, RC wall, were also proposed. In order to verify present method, user-defined plastic hinge properties of 3-D RC building, compared with pushover analysis and time history method were carried out.
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Herrera, Ricardo. "Seismic behavior of concrete filled tube column-wide flange beam frames /." Diss., 2005. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3203816.
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Li, Shih-Wei, and 李世偉. "Ultrasonic Inspection of the Back-Filled Materials in Aluminum Window Frames." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/s7998x.
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碩士<br>朝陽科技大學<br>營建工程系碩士班<br>92<br>The poor quality of back-filled materials of aluminum window frames can cause water leakage to concrete walls. Such problems are very common and can be a big threat to the durability of concrete buildings. To inspect the quality of the back-filled materials, the method of coin-tapping is often used by experienced technicians. This, however, only provides subjective and sometimes doubtful results. Current study is focused on the applications of quantitative nondestructive testing methods for in situ inspection of back-filled materials of aluminum window frames. Significant difference in attenuation has been observed for the pulse-echo signals due to different back-filled conditions of the window frames. A 20-MHz ultrasonic pulse was sent to the window frame and the echo signals were recorded for further analyses. Four methods were used to study and characterize an extensive amount of measurement data, taken under pre-fabricated back-filled conditions. The results showed that the most effective methods were the pulse echo overlap (PFO) and the elapse time to pseudo-steady waveform (ETPSW). Furthermore, the coin-tapping method was applied to a window frame mounted on the wall of an existing building. The same window frame was then subjected to both PFO and ERPSW. The results were in reasonable agreement with those obtained by the coin-tapping method. Therefore, the ultrasonic wave propagation can be used as an alternative to the coin-tapping method for in situ inspection of back-filled conditions of window frames. Such methods are based on quantitative data and more reliable than the coin-tapping method.
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Liao, Chien-Yu, and 廖健宇. "Noise-tolerant Depth Map Construction Based on Multi-frame Frequency Selective Weighted Median Filter (FSWM)." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/41665270123213077767.
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碩士<br>國立中興大學<br>資訊科學與工程學系所<br>100<br>The 2D images of a measured object is obtained by using a sensor shooting from some direction, which only render the shape and color of the measured object. In many applications, height information of an object is very useful. In order to obtain the height information, 3D shape recovery technique is then developed. Many 3D shape recovery techniques have been proposed, and “Shape From Focus” (SFF) is one of the most popular method. The goal of SSF technique is to construct an accurate depth map from a sequence of multi-focus images of the measured object. The depth map of an object is constructed based on the degree of focus of image pixel, hence the design of focus measure plays an important role in the SFF technique. Due to the presence of noise in the captured image sequence, focus measures previously proposed in literatures usually lead to wrong focus-measuring values so that spikes often occur in the depth map of the measured object. To overcome this problem, we propose a new focus measure based on FSWM method (Frequency Selective Weighted Median Filter) and the relationship of consecutive images in the image sequence. Our method can obtain an accurate depth map of an object from image sequence corrupted by high-density noise. In addition, the depth map of an object obtained by our method goes well with Otsu method so that we can separate real areas of the object from its background to help concentrate on the object itself. Four different multi-focus image sequences obtained from different objects are used to compare the performance of other methods and ours, and our method can obtain accuracy depth map in these four cases in the presence of noise up to 25%.
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Chuan, Chun-Chai, and 莊鈞再. "A Study On Pushover Analysis of Low Rise Reinforced Concrete Wall Filled Within Frame Structure." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/2f7ubt.
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碩士<br>國立臺北科技大學<br>土木與防災研究所<br>94<br>This paper focuses on the pushover analysis of the low-rise reinforced concrete (RC) wall filled within the frame structure. Incorporating with equilibrium and compatibility conditions, the softened model of the concrete as well as the elastoplastic model of the reinforcement was taken into account for the analysis of the contribution of the RC wall, based on the fixed angle softened truss model. Accordingly, the load-deformation relation of the wall subjected to monotonic lateral load can be analyzed through the proposed procedure. In order to simplify the framed wall structural model, the equivalent structural strut simulating the action of the RC wall infilled, based on the relation obtained, was modeled structurally along the diagonal of the frame for the sequential pushover analysis.
To testify the accuracy of the proposed approach, the reported results of the cyclic loading test for sixteen specimens of the structure discussed were adopted for necessary investigation. It shows that this study can provide an acceptable result of the pushover analysis for the frame structure infilled with the low-rise RC wall. Furthermore, the simplified model of the equivalent structural strut we proposed might help the engineers do the structural design or evaluation easier.
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Huang, Shi-Hui, and 黃旭輝. "Numerical Simulations of Non-ductile Reinforced Concrete Frames with In-filled Brick Panel." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/27251564694390619245.
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碩士<br>國立中央大學<br>土木工程研究所<br>91<br>The behaviors of reinforced concrete (RC)
structures containing brick wall under earthquake loading are quite complicated. It is very difficult to analyze the problem analytically. Experiment and numerical simulation are two possible solutions to extract reference information for the development of design code.
However, the experimental approach requires much effort and expense to built very limited number of specimens to explore the behaviors of RC structures. The main advantage of using numerical simulation code to study the structural problem is that any detail response of the system can be detected easily from the calculated data.
In this study, a computation code is developed to simulate the nonlinear dynamic behaviors of RC structure containing brick walls. Both the finite element method (FEM) and the discontinuous deformation analysis (DDA) were adopted to built up the numerical analysis procedure. Two-dimensional solid elements are used to model the concrete and brick and mortar materials and truss elements are used to model the reinforcement. The joint effect between the mortar and brick is modeled by joint element. The elastic-plastic response of reinforcement is considered in the
analysis. An equivalent strain model that can characterize the nonlinear loading and unloading behavior of concrete material is applied. To simplify the analysis of cracked elements, the smear crack model and associated damage theories were used for the material points satisfying failure criteria.
The accuracy and effectiveness of this newly developed simulation code were verified by the matching between numerical prediction and experimental result of various cases. The hysteresis load-displacement response for a RC frame can be calculated that is very helpful for the seismic analysis and retrofitting design.
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Fang, Kuang-Yu, and 方光宇. "The Hydraulic Characteristics of Drainage Holes in the Gravity Check Dam of Reinforced Concrete Frame Filled with Sediment." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/23749976154177949329.
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碩士<br>國立中興大學<br>水土保持學系<br>89<br>In this study, experiments focused on the position of drainage holes at the downstream side of gravity check dam of reinforced concrete frame filled with sediment. This study discussed the Hydraulic Characteristics under the combinations of two types of refilled sediment, four drainage holes with different diameter, and three different water depths.
The experiment result indicated that the drainage hole would be arranged higher than the plant flume to avoid disturbance on the sand and plant inside flume. Experimental findings also discovered that the flow velocity within drainage hole was affected strongly by refilled sediment over than the water depth. Meanwhile, the diameter of drainage hole was the main factor affecting the flow velocity of drainage hole: larger the diameter the faster velocity.
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Peng, Shih-Wei. "Seismic resistant connections for concrete filled tube coulmn-to-WF beam moment resisting frames /." Diss., 2001. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3010421.
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Ssu, Shuen-Wei, and 司順瑋. "The Experiment and Analysis of Low-rise Shear Walls In-filled in RC Frames." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/mvkwn4.
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碩士<br>國立臺北科技大學<br>土木與防災研究所<br>96<br>In this research, an analysis model and a new type of reinforcement detail for shear walls were developed by numerical modeling and experiments. After performing static plane stress analysis by using SAP2000 program, the magnitudes and directions of maximum principal stress and shear stress were found. By comparing the analysis results with the tensile strength and shear strength of concrete, we get the crack models of shear walls and the new designed shear wall was developed accordingly. In order to verify the viability of the new design, we built a pure frame and a shear wall in-filled in frame specimens for cyclic load test. For analysis, the columns of the frame were modeled by utilizing the Mander’s model and the wall is analyzed by an effective analysis model which named “equivalent column”, proposed by Li et al. (2007). In SAP 2000 program, we set the hinge properties in frame obtained with Response-2000 program, and the hinge property in wall were obtained using softened strut-and-tie model and multiple regression analyses with five RC wall specimens’ data. Nonlinear pushover analyses were performed on the numerical model using SAP2000. After the comparing the test results and analysis results, we found that the new type of reinforcement detail for shear walls can prevent most cracks. The analysis results by equivalent column model were also close to the experiment data.
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Heel, Joachim. "Direct Estimation of Structure and Motion from Multiple Frames." 1990. http://hdl.handle.net/1721.1/6004.
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This paper presents a method for the estimation of scene structure and camera motion from a sequence of images. This approach is fundamentally new. No computation of optical flow or feature correspondences is required. The method processes image sequences of arbitrary length and exploits the redundancy for a significant reduction in error over time. No assumptions are made about camera motion or surface structure. Both quantities are fully recovered. Our method combines the "direct'' motion vision approach with the theory of recursive estimation. Each step is illustrated and evaluated with results from real images.
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Lin, Yen-Jung, and 林彥融. "Enhanced Dewatering of Municipal Sewage Sludge by Application of Advanced-Oxidation Conditioning and Plate-and-Frame Filter Press Electrodewatering." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/x5tyh8.
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碩士<br>國立中山大學<br>環境工程研究所<br>103<br>The objective of this study was to condition the biological municipal sludge by using hydrogen peroxide or sodium persulfate catalyzed with persulfate, and combine the Plate-and-Frame filter press electro dewatering to evaluate the dewatering performance. The final the moisture contents of sludge cakes, sample size, electric field and the costs of sludge cake were also analyzed. The results showed that under the Plate-and-Frame filter press dewatering, the moisture contents of sludge cakes were decreasing to 45% and 55% conditioning by hydrogen peroxide and sodium persulfate respectively, and the CST of the biological municipal sludge were decreasing to 9% and 11%, and the SRF were decreasing to 7% and 6% respectively. In addition, the injection sample size and treating capacity was also increasing by uisng the Plate-and-Frame filter press electro dewatering, and the the moisture contents of sludge cakes were decreasing to 42% and 47% conditioning by hydrogen peroxide and sodium persulfate. The corresponding energy consumptions were determined to be 14.69 kWh/ton and 13.43 kWh/ton, respectively. To summarize, it was obvious that dewatering efficiencies of biological municipal sludge increased by using advanced oxidation processes, and when an electric field was applied, the dewatering efficiencies and the treating capacity also increasd. It appeared that the electrodewatering process employed in this study was technically and economically feasible for biological sludges.
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Verma, Shubham Klima Mark S. "An evaluation of a pilot-scale plate-and-frame filter press for dewatering fine coal refuse and silica sand." 2009. http://etda.libraries.psu.edu/theses/approved/PSUonlyIndex/ETD-3877/index.html.
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