Rozprawy doktorskie na temat „Circular arcs”
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Sanyal, Barun Kumar. "Representations of digraphs using intervals or circular arcs". Thesis, University of North Bengal, 1994. http://hdl.handle.net/123456789/597.
Pełny tekst źródłaBasu, Asim. "More results on representation of digraphs /bigraphs using intervals or circular-arcs". Thesis, University of North Bengal, 2012. http://hdl.handle.net/123456789/20.
Pełny tekst źródłaYin, Xianjun. "On large deformations of elastic circular arcs bifurcation, stability and application as spring and gripper elements /". [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=974857106.
Pełny tekst źródłaRullan, Jose M. "Flow Control Over a Circular Arc Airfoil by Periodic Blowing". Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/10178.
Pełny tekst źródłaMaster of Science
Miranda, Sergio. "Active Control of Separated Flow over a Circular-Arc Airfoil". Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34411.
Pełny tekst źródłaMaster of Science
Ferro, Fernando Luiz de Bragança. "Interação solo-estrutura em galpões metálicos treliçados com cobertura em arco metálico circular". Pós-Graduação em Engenharia Civil, 2013. https://ri.ufs.br/handle/riufs/5002.
Pełny tekst źródłaO engenheiro projetista de estruturas normalmente considera que o solo, elemento que suporta as fundações de uma edificação, comporta-se como sendo um maciço indeformável permanecendo inalterado após a aplicação do carregamento ao longo do tempo. A prática no projeto de fundações indica porém que o solo quando submetido ao carregamento de uma edificação se deforma e com isso provoca uma perturbação na estrutura. Este fenômeno é denominado Interação Solo-Estrutura e teve os seus efeitos computados para um Galpão Metálico Treliçado em Arco Metálico Circular. Foram estudadas as alterações dos esforços e tensões nas hastes da estrutura metálica e os deslocamentos verificados nos seus nós. As tensões normais na interface sapata-solo e os deslocamentos ocorridos também foram objeto do estudo. O procedimento comparou a solução utilizando apoios indeslocáveis com as hipóteses admitindo sapatas de várias dimensões computando-se os efeitos da Interação Solo-Estrutura. Para a obtenção dos resultados foi efetuada uma modelagem numérica utilizando o Método dos Elementos Finitos através do software SAP 2000®. Os resultados encontrados confirmaram a estimativa inicial que era a de que, mesmo sapatas com pequenas dimensões suportando grandes excentricidades decorrentes de cargas e momentos ainda assim trabalhavam apenas com tensões de compressão na interface sapata-solo.
Mulligan, Ryan. "Defending Defense: Circular Arguments About Artmaking". VCU Scholars Compass, 2005. http://scholarscompass.vcu.edu/etd/1370.
Pełny tekst źródłaPervez, Wajiha. "DESIGN FOR DISASSEMBLY - A CIRCULAR APPROACH". VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4773.
Pełny tekst źródłaCyr, Stéphane. "A theoretical model for flow about a circular-arc aerofoil with separation /". Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61186.
Pełny tekst źródłaTwo different circular-arc aerofoils were tested; one of 10% and one of 18% camber. The calculation for the 10% aerofoil did not predict any separation at design incidence, which was confirmed experimentally. The theoretical model predicted the right position of separation for the 18% aerofoil. It also provided a good simulation of the pressure distribution, including the right value for the base pressure and a good prediction of the lift. It follows that the pressure distribution when integrated, gives a good estimate of the pressure or form drag. (Abstract shortened by UMI.)
Sherzad, Rafiullah, i Awrangzib Imamzada. "Buckling and Geometric Nonlinear Stress Analysis : Circular glulam arched structures". Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-54569.
Pełny tekst źródłaDenys, Kristof. "Circular motion for robotized metal deposition : verification and implementation". Thesis, Högskolan Väst, Avd för automation och datateknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-5469.
Pełny tekst źródłaLeroy, Luisa. "CIRCULAR ECONOMY NOW00 : How can a tool stimulate Circular Economy whereby the product development stage will be guided towards less waste generation?" Thesis, Linnéuniversitetet, Institutionen för design (DE), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-76331.
Pełny tekst źródłaAddepalli, T., A. Desai, Issa T. Elfergani, N. Anveshkumar, J. Kulkarni, C. Zebiri, J. Rodriguez i Raed A. Abd-Alhameed. "8-Port Semi-Circular Arc MIMO Antenna with an Inverted L-Strip Loaded Connected Ground for UWB Applications". MDPI, 2021. http://hdl.handle.net/10454/18536.
Pełny tekst źródłaMultiple-input multiple-output (MIMO) antennas with four and eight elements having connected grounds are designed for ultra-wideband applications. Careful optimization of the lines connecting the grounds leads to reduced mutual coupling amongst the radiating patches. The proposed antenna has a modified substrate geometry and comprises a circular arc-shaped conductive element on the top with the modified ground plane geometry. Polarization diversity and isolation are achieved by replicating the elements orthogonally forming a plus shape antenna structure. The modified ground plane consists of an inverted L strip and semi ellipse slot over the partial ground that helps the antenna in achieving effective wide bandwidth spanning from (117.91%) 2.84–11 GHz. Both 4/8-port antenna achieves a size of 0.61 λ × 0.61 λ mm2 (lowest frequency) where 4-port antenna is printed on FR4 substrate. The 4-port UWB MIMO antenna attains wide impedance bandwidth, Omni-directional pattern, isolation >15 dB, ECC 4.5 dB making the MIMO antenna suitable for portable UWB applications. Four element antenna structure is further extended to 8-element configuration with the connected ground where the decent value of IBW, isolation, and ECC is achieved.
Bauer, Ulrich Josef [Verfasser], Stephan [Gutachter] Ruscheweyh i Wolfgang [Gutachter] Lauf. "Conformal Mappings onto Simply and Multiply Connected Circular Arc Polygon Domains / Ulrich Josef Bauer. Gutachter: Stephan Ruscheweyh ; Wolfgang Lauf". Würzburg : Universität Würzburg, 2016. http://d-nb.info/1111784388/34.
Pełny tekst źródłaBian, Tao [Verfasser]. "Numerical and Experimental Investigations of Flow Loss and Flow Structure of Circular Arc Cascades with Different Leading and Trailing Edges / Tao Bian". Aachen : Shaker, 2018. http://d-nb.info/1188548395/34.
Pełny tekst źródłaZnidarčić, Matej. "Computational Validation of the Compressor Design Program Blade Layout Method". Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1323361068.
Pełny tekst źródłaRao, P. Sharath Chandra. "Analysis of fluid circulation in a spherical cryogenic storage tank and conjugate heat transfer in a circular microtube". [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000461.
Pełny tekst źródłaAbdi, Ali Dusit. "The bright hopes and desoluted dream of Ethiopian women : A study of circular migration to middle east and the gulf states". Thesis, Uppsala universitet, Institutionen för kulturantropologi och etnologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-343986.
Pełny tekst źródłaGilbert, Elisa. "The future of the workplace : How can office furniture companies create circular business models while supporting the changing world of work?" Thesis, Linnéuniversitetet, Institutionen för design (DE), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-86165.
Pełny tekst źródłaMöller, Martin [Verfasser], Bernd [Akademischer Betreuer] Künne i Jens [Gutachter] Bechthold. "Beitrag zur Auslegung und Gestaltung einer innovativen Kreisbogen‐Stirnverzahnung : Contribution for designing an innovative frontally circular arc profiled coupling / Martin Möller ; Gutachter: Jens Bechthold ; Betreuer: Bernd Künne". Dortmund : Universitätsbibliothek Dortmund, 2019. http://d-nb.info/1182680100/34.
Pełny tekst źródłalindström, kajsa. "The urban hens : En social mötesplats för att skapa förståelse för matens värde och en cirkulär process". Thesis, Konstfack, Industridesign, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-5859.
Pełny tekst źródłaLjung, Miriam, i Frea Håkansson. "Cirkulär ekonomi inom byggsektorn - En kvalitativ intervjustudie kring byggbranschens förhållande till cirkulär ekonomi för hållbar framtid". Thesis, Malmö universitet, Fakulteten för kultur och samhälle (KS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-23352.
Pełny tekst źródłaThe construction sector has a major impact on global warming and is estimated to have emissions of 15 million tonnes of carbon dioxide equivalent per year. The construction industry is also the largest consumer of raw materials, accounting for 50% of global steel production and consuming more than 3 billion tonnes of raw materials. Circular economics is an emerging concept in a wide range of sectors and industries for achieving a sustainable development. The purpose of this thesis is to investigate the construction industry's view of circular economy in order to reduce the industry's climate impact. We want to explore how the construction sector can become climate neutral with the help of circular principles and initiatives such as LFM30, which is a local roadmap for achieving the global sustainable development goals for the year 2030, in order to contribute to a sustainable built environment. The analysis reveals how selected companies view circular economics and their knowledge of the subject. In order to realize the potential of the circular economy, different ways of working have been identified by respondents working within the subject,which can support the complex transition to a circular economy in the built environment.
Vanko, Peter. "Štěrkové pilíře - význam klenbového efektu". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227244.
Pełny tekst źródłaCureg, Edgardo S. "Some problems on products of random matrices". [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001831.
Pełny tekst źródłaBillew, Barrett Slade. "Flow-Acting: Modern Sports Science and the Preparation of Actors". VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/775.
Pełny tekst źródłaKuhnert, Sebastian. "Space efficient algorithms for graph isomorphism and representation". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2016. http://dx.doi.org/10.18452/17447.
Pełny tekst źródłaThe graph isomorphism problem deals with the question if two graphs have the same structure up to renaming their vertices. It is one of the few remaining natural problems for which neither a polynomial-time algorithm nor NP-hardness is known. This situation has led to a branch of research that develops efficient algorithms for special cases of the graph isomorphism problem, where the input graphs are required to be from restricted graph classes. The main contribution of this thesis comprises of logspace algorithms that solve the isomorphism problem for k-trees, interval graphs, Helly circular-arc graphs and proper circular-arc graphs. This improves previously known parallel algorithms and leads to a complete classification of the complexity of these problems, as they are also shown to be hard for logspace. In fact, these algorithms achieve more: In the case of k-trees, the algorithm computes canonical labelings in space O(k log n). An alternative implementation runs in time O((k+1)!n), where n is the number of vertices, yielding the fastest known FPT algorithm for k-tree isomorphism. The algorithms for interval and circular-arc graphs actually compute canonical representations, i.e., each vertex is assigned an interval (or arc) such that these intersect each other if and only if the corresponding vertices are adjacent, and isomorphic input graphs receive the same interval (or arc) model. This thesis also presents logspace algorithms that compute interval representations with additional properties, or detect that this is not possible: The resulting interval models can be required to be proper (no interval contains another), unit (all intervals have the same length), or to satisfy prescribed lengths for pairwise intersections (and possibly prescribed lengths of intervals).
Oosthuizen, Josef Jacobus. "Die sorgsame toesighoudingsplig van ‘n siviele tegnologie werkswinkel-onderwyser ter bevordering van leerderveiligheid / Josef Jacobus Oosthuizen". Thesis, North-West University, 2011. http://hdl.handle.net/10394/8292.
Pełny tekst źródłaThesis (MEd (Education Law))--North-West University, Potchefstroom Campus, 2012
Bystrianská, Kateřina. "Ocelová konstrukce autosalonu". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392250.
Pełny tekst źródłaKao, Liang_Jen, i 高良仁. "On the k-cuttable Circular Arcs". Thesis, 1999. http://ndltd.ncl.edu.tw/handle/00517194966472088832.
Pełny tekst źródła逢甲大學
應用數學系
87
We show that given a set of n circular arcs on a unit circular, the k-cuttable Circular Arcs (kCCA) problem can be solved in O(kn) time. The kCCA algorithm is based on an existent algorithm for the Minimum cuts for circular arcs (MCCA) problem, but with modifications according to our newly found properties. These properties make arcs-sorting process become unnecessary in our algorithm. Some applications that are kCCA algorithm are also presented in this thesis.
Shi, Ling. "Architectural Surfaces and Structures from Circular Arcs". Diss., 2013. http://hdl.handle.net/10754/310902.
Pełny tekst źródłaWei-Chang, Du, i 杜維昌. "A Study on Approximating Planar Curves by Piecewise Circular Arcs". Thesis, 1995. http://ndltd.ncl.edu.tw/handle/04724896216068086988.
Pełny tekst źródła國立清華大學
資訊科學學系
83
For this dissertation, we studied two-dimensional curve approximation problems by using piecewise circular arcs with geometry continuity G0 and G1. This study faced two different kinds of approximation problems: one, approximating digitized curves, and two, approximating the conversion of parametric curves. Both procedures used the maximum norm to measure the accuracy of the approximation. A digitized curve can be regarded as an ordered set of points. To approximate a digitized curve by mathematical curves often results in a compact and efficient representation for various applications. For this kind of approximation problems, some novel algorithms are proposed to approximate a given digitized curve by using piecewise circular arcs with G0 and G1 continuity. There are two types of the piecewise approximation problems, namely, (1) minimizing the number of segments of the approximate curve whose error is within a specified tolerance E>0, and (2) minimizing the error of the approximate curve whose number of segments is equal to a given integer M>0. First, we propose some new algorithms to solve the best single arc and single biarc approximation problems with respect to the maximum norm. Then, based on the results of the single arc and single biarc approximations, we introduce several knot-selection algorithms which can solve both types of approximation problems efficiently. Approximate conversions from high-order curves to low-order primitive curves are often required in exchange for data or to facilitate subsequent processing. For this issue, we discuss the approximate conversion of parametric curves by G1 arc splines. We first used iterative methods to find the best approximate biarc of a sub-piece of parametric curve, and later used the split-and-merge strategy to choose proper knot points for arc splines. Moreover, based on the intrinsic properties of the curve, some heuristic methods are proposed to facilitate the computation of approximate conversions.
Tsai, Wei-Yuan, i 蔡偉源. "Intersections of circular arcs of earthquakes around Taiwan from 1976 to 1989". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/hyzr9q.
Pełny tekst źródła國立中央大學
土木工程學系
105
After analyzing the earthquake catalog of Taiwan, we plot the events of earthquakes with magnitudes equal to or greater than 4.6 on the map of Taiwan to investigate the circular arcs of earthquakes(CAE). An intersection of two or more than two CAEs can be treated as a localized stress interaction indicator. We analyze this type of intersection happened in Taiwan from 1976 to 1988, we found that there were 68 intersections around Taiwan. Among these intersections 46 of them are important. That is, within three years after the occurrences of these 46 intersections, there were strong earthquakes happened closed to these intersections. We also analyze and explain the meanings of these intersections.
I-Chang, Chang, i 張怡昌. "Three-dimensional Mechanical Analysis of Triple-circular-arcs and Horse-shoe Tunnel Cross Connections". Thesis, 1998. http://ndltd.ncl.edu.tw/handle/93590316088175204678.
Pełny tekst źródła國立臺灣科技大學
營建工程技術學系
86
The behavior of cross connections between tunnel tubes should be three-dimensional, and is not suitable using two-dimensional numerical simulation, no matter how empirical judge or safety factor includes. Three-dimensional analysis of under different RMR and lateral stress ratio K. The cross section shape of main tunnel is triple-circular-arcs for main tunnel, and horse-shoe for cross connections. The widths of the main tunnel and cross connection are 17 and 7 meters respectively, and the circular centers The research results show that stress concentration is significant around the penetration region of cross connections, and the concentration is higher in the acute side than obtuse side for inclined cross connections. The influential region of cross connections depends on the rock condition, the region increases if RMR decreases, the tendency is significant if cross connections are located on poor rock.
Hsu, Shao-Chan, i 許邵展. "The strongest intersections of the circular arcs of earthquakes around Japan from 1995 to 2004". Thesis, 2019. http://ndltd.ncl.edu.tw/handle/crhvvq.
Pełny tekst źródła國立中央大學
土木工程學系
107
The primary goal of this research is to use the concept of the strongest intersections of the circular arcs of earthquakes to predict the future strong earthquakes. Filtering down the seismic data through earthquakes of magnitude 6 ,when five points are approximately uniformly distributed along an arc ,it is called the strongest circular arcs of earthquakes. This thesis aims to find out the strongest intersections of the circular arcs of earthquakes and use statistics to analyze the strong events happen near the intersections, and try to find the connection between them. The analysis of the intersections of the circular arcs of earthquakes was developed from the concept of stress concentration in crust and the strongest intersection of the circular arcs of earthquakes is named by Professor Hin-Chi Lei. The purpose of the study focuses on the earthquakes in Japan area, from 1995 to 2004, recorded in seismic data of Japan Meteorological Agency. We have found 13 strongest intersections and 7 strongest double intersections of circular arcs of earthquakes . For every case , in the circular predicted region with the radius equalto the quarter of the smaller arc length of the intersections, at lease one magnitude 5.7 earthquake can be found within 3 years after the formation of the strongest intersection of circular arcs of earthquakes .This result confirms the connection between the strongest intersections of circular arcs of earthquakes and the strong earthquakes happened after them.
Liu, Hsing-Chen, i 劉興宸. "The strongest intersections of the circular arcs of earthquakes around Japan from 2005 to 2014". Thesis, 2019. http://ndltd.ncl.edu.tw/handle/2xkm97.
Pełny tekst źródła國立中央大學
土木工程學系
107
This study uses the concept of strongest intersection of circular arcs of earthquakes to find the area where the stress is concentrated, and attempts to predict the time of occurrence and the place of the sequential strong earthquake. The data source is provided by the Japan Meteorological Agency, and the seismic data from 2005 to 2014 which is selected to make into an earthquake catalog. At the beginning, the distribution of seismic events with a minimum magnitude of 6 or above is analyzed through MATLAB, and the minimum magnitude of the observed earthquake events is decreased gradually until the two first occurrence and intersecting circular arcs of earthquakes are found. Here the arc of earthquakes is composed of five or more than five earthquake events which are distributed approximately uniformly. The intersections found by this method are called the strongest intersection of circular arcs of earthquakes. The circular predicted region is defined by taking the intersection point as its center and the radius can be 70Km or a quarter of the length of the shorter one between the two arcs of the intersection. Inside the predicted region, we look for the strong earthquakes occurred after the formation of the intersection. And the strong events are analyzed by statistics. The intersection of circular arcs of earthquakes is used to estimate the region of stress concentration. The concept is derived from the uniform distribution pattern of tension cracks in the rock and the uniformly arranged holes under in a pressure plate. According to the statistical results. The relation between the strongest intersection of circular arcs of earthquakes and the subsequent strong earthquakes is quite strong.
Yin, Xianjun Brosamler Gunnar-Arnvid. "On large deformations of elastic circular arcs : bifurcation, stability and application as spring and gripper elements /". 2002. http://www.gbv.de/dms/ilmenau/toc/35758841X.PDF.
Pełny tekst źródłaHuang, Hong-Jun, i 黃泓鈞. "The Strongest Intersection of the Circular Arcs of Earthquakes around Alaska and California from 1995to 2004". Thesis, 2019. http://ndltd.ncl.edu.tw/handle/6fe6m9.
Pełny tekst źródła國立中央大學
土木工程學系
107
This study is based on the concept of "the strongest intersection of circular arcs of earthquakes" proposed by Professor Hin-Chi Lei in the paper [3]. We apply this concept in the United States to test whether the method is applicable to the United States and try to improve the method. Using the data of the US Geological Survey (USGS) as the catalog of earthquakes, the magnitudes of events are filtered from large to small. When the first appeared arc intersection is obtained, we call it the strongest intersection of circular arcs of earthquakes, and the intersection is used to predict strong earthquakes. We perform the statistics and comparisons to find the correlation between the two as a reference for future strong earthquake prediction. This research selects Alaska and California as the research areas. The time is from the first half of 1995 to the second half of 2004. The time interval is half a year to find the strongest intersection. There are 15 effective intersections in Alaska and 9 in California. Then, with the scale of 5.7, 6.0 and the predicted region with radius of 70 km, Lmin/4, Lmin/3, we make statistical charts to compare the follow-up trend of the large earthquake, and further explore the impact of the double intersection, and finally compare the result with the thesis of Jhih-Wun Lin [10]. Although the Alaska region and the California region belong to the Pacific Rim seismic zone, the Aleutian Islands under Alaska belongs to the same squeezing volcanic zone and the cryptic zone, while the California area is the staggered plate across the north and south of the San Andreas fault. This study will explore the application of the strongest intersections of circular arcs of earthquakes in these two regions, and try to find out what are the same and different between them.
Lin, Jhih-Wun, i 林致彣. "The strongest intersections of the circular arcs of earthquakes around Alaska and California from 2005 to 2014". Thesis, 2019. http://ndltd.ncl.edu.tw/handle/yr2jkz.
Pełny tekst źródła國立中央大學
土木工程學系
107
This study attempts to apply the concept of "the strongest intersection of the circular arcs of earthquakes" which currently used in Taiwan to regions in and around California and Alaska. When searching for the earthquake events from the earthquake catalogue, we gradually decrease the magnitude of earthquakes events from 6 or higher until the first intersection of the circular arcs appears and call it "the strongest intersection of the circular arcs of earthquakes". If in one region there are multiple circular arcs at the same time with the same minimum event magnitude, the arcs with the earliest confirming time will be selected to from the intersection. Then, the intersection will be analyzed and we try to find the relation between the intersection and the nearby strong earthquakes happened after the formation of it. At the same time, the study will establish an earthquake catalogue for research. The earthquake catalogue is divided into two regions of Alaska and California. And the selected data for earthquake events are from the first half of 2005 to the second half of 2014. In Alaska we found 19 strongest intersections of the circular arcs of earthquakes, and in California we found 15 strongest intersections of the circular arcs of earthquakes. The circular prediction reigon of strong earthquakes takes the intersection point as the center and 70 km or Lmin/4 as the radius. Here Lmin/4 represents a quarter of the shortest arc length in the two arcs of the intersection. Afterwards, each intersection is regarded as a case to explore how many days required for the subsequent strong earthquakes in the prediction area, and then we carry out the statistics and analysis of all the intersections from the first half of 2005 to the second half of 2014, and then discuss the impact of the strong earthquake. Alaska、California and Taiwan are all belong to the Circum-Pacific Seismic Zone. The Aleutian Islands which located below Alaska belong to volcanic zone and subduction zone, and San Andreas Fault is transform fault crossing California from north to south. The study will explore the application of the strongest intersection of the circular arcs of earthquakes in these two regions.
Yin, Xianjun [Verfasser]. "On large deformations of elastic circular arcs : bifurcation, stability and application as spring and gripper elements / vorgelegt von Xianjun Yin". 2002. http://d-nb.info/974857106/34.
Pełny tekst źródłaBelkale, Naveen. "Hadwiger's Conjecture On Circular Arc Graphs". Thesis, 2007. https://etd.iisc.ac.in/handle/2005/475.
Pełny tekst źródłaBelkale, Naveen. "Hadwiger's Conjecture On Circular Arc Graphs". Thesis, 2007. http://hdl.handle.net/2005/475.
Pełny tekst źródłaShih, Jin-Zen, i 施濬哲. "Buckling and Postbuckling Study of Delaminated Circular Arch". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/18315635951780126358.
Pełny tekst źródła國立臺灣海洋大學
河海工程學系
97
Laminated circular arches possess great strength-to-weight ratio and good resistance to corrosion, and therefore have been widely used in a variety of engineering fields. The major problem encountered in the application of such composite structure is attributable to separation of adjoining plies commonly called delamination. This drawback of material largely arises from manufacturing imperfection or impact loading, and inevitable leads to reduction in the stiffness and resistance strength. Buckling and postbuckling of delaminated circular arches are investigated in this work to accurately predict the load capacity. On the basis of geometrically nonlinear finite element method and perturbation technique, postbuckling equilibrium paths are obtained as a number of asymptotic expansions of a gauge parameter. Several support conditions are considered for numerical studies.
Li, Zhi-uei, i 李致緯. "Finite Element Stress Analysis of a Circular-Arc Curvilinear-Tooth Gear Set Generated by Complementary Circular-Arc Disk-Type Cutters". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/65038940047077374118.
Pełny tekst źródła國立中央大學
機械工程研究所
100
This paper focuses on finite element stress analysis of a complementary circular-arc curvilinear gear set. Firstly, the mathematical model of the complementary circular-arc curvilinear gear set was developed based on the theory of gearing. Tooth contact analysis (TCA) is performed to study the influences of gear design parameters and assembly errors on the transmission error. The original complementary circular-arc curvilinear gear is in line-contact and is sensitive to assembly errors. A commercial finite element analysis (FEA) package, ABAQUS, was utilized to perform stress analysis of five contact teeth pair, and the bending stress of complementary circular-arc curvilinear gear was compared with that of conventional spur gears. In addition, a method of tooth modification was proposed in this thesis to introduce point contact in a modified complementary circular-arc curvilinear gear set. Tooth contact analysis and FEA were utilized to investigate the transmission error, contact pattern and bending stress of the proposed modified complementary circular-arc curvilinear gear set. Finally, experimental contact patterns of both original and modified complementary circular-arc curvilinear gear sets were also performed on a single flank testing machine to verify the results from TCA and FEA.
Hung, Ruo-Wei, i 洪若偉. "Algorithms on Circular-arc Graphs and Multiple Stacks". Thesis, 1992. http://ndltd.ncl.edu.tw/handle/55297478991501787651.
Pełny tekst źródła國立中正大學
資訊工程研究所
80
In this thesis, we shall present two efficient algorithms on circular-arc graphs and multiple stacks manipulation, respectively. It is divided into two parts as follows: PART I: An O(n) Time Algorithm for the Minimum Connected Dominating Set Problem on Circular-Arc Graphs. In this part, we shall present an algorithm to solve the minimum-cardinality connected domination problem on circular-arc graphs. Given the ar model with endpoints sorted, the algorithm takes only O(n) time and O(n) space where n is the number of arcs (vertices). PART II: An Efficient Algorithm Using Linked Blocks for Multiple Stacks Manipulation. A new and efficient algorithm for multiple stacks manipulation is proposed in this part. Initially, our algorithm assigns the storage to blocks of almost equal size and starts out with all empty stacks and a linked free-blocked list which is a linked list constructed by the blocks. After performing the initialization step, the basic operations of each stack such as PUSH and POP can be done efficiently. According to our simulation results, it is not hard to see that our algorithm is more efficient than the best previous algorithms [Yang et al. 1991; Chang et al. 1991].
陳韋秀. "Some Problems on Circular-Arc and Related Topics". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/82015926028775268330.
Pełny tekst źródłaHsu, Shih-Kai, i 徐士凱. "Analysis on Ground Surface Motions of Semi-circular Canyons with a Circular-arc Convex Inside". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/58960330953044276402.
Pełny tekst źródła國立臺灣海洋大學
河海工程學系
97
Among the existing literature, the scattering problems of SH waves have been investigated extensively in different areas. But, only those for a few simple geometric shapes can be solved by using the method of separation of variables to get exact solutions. Since exact solutions are not easily obtained, if series solutions can be constructed, they may supplement the deficiency of exact solutions. Thus, concerning a semi-circular canyon with unfilled and filled circular-arc convexes inside, the author aims to make good use of the region-matching technique to derive their series solutions. Based on the region-matching technique, at first a circular-arc auxiliary boundary is introduced to divide the entire analyzed region into two sub-regions. In each sub-region, the expansion of each wavefield is obtained by satisfying the governing equation and parts of boundary conditions by using the wavefunction expansion. Then, a suitable Graf's addition formula achieves the necessary coordinate transformation. After constructing simultaneous equations, the surface displacement amplitudes can be evaluated. Graphical results are presented to exhibit the effects of incident frequency, angle of incidence, protrusion thickness, and shear wave velocity on surface motions. At last, the proposed series solutions can serve as benchmarks for the validation of other numerical methods, especially for high-frequency cases.
Wang, Chih-Shan, i 王致善. "Transient Response of A Circular Arch Subjected to Support Motion". Thesis, 1994. http://ndltd.ncl.edu.tw/handle/41614761421284010117.
Pełny tekst źródłaYU, MING-XING, i 余明興. "Parallel algorithms for some problems on circular-arc graphs". Thesis, 1989. http://ndltd.ncl.edu.tw/handle/39975392271901392784.
Pełny tekst źródłaLapa, João David Ferreira. "Variações tipológicas da planta circular na arquitetura ocidental". Master's thesis, 2015. https://repositorio-aberto.up.pt/handle/10216/81133.
Pełny tekst źródłaThis dissertation resulted from a continuing processregarding a practical experience carried out prior to this study, withinthe discipline of Project IV, which consisted on the development of aproposal for a circular plan building.Currently, in the western urban and architectural landscape,in general, the circular plan is still experienced in an exceptionalmanner relatively to the existing build-up structure. In most of theconstructions where it's used, it is found that its adoption resultsnormally of the application of a program for a very specific use.This study attempts to demonstrate that throughout Historycan also be seen the existence of a plurality of circular plan examples,which have a high programmatic heterogeneity, as well as, havegained a high degree of complexity in their compartmentalizationgeometry.In this work has always existed the criteria of keeping on thesidelines any quantitative or absolute approach, on the issue of circularplan.It is primarily a study that focuses essentially on mattersrelating to the positioning of the circle geometry in the historiographycontext of Western architecture, as well as on the issues of plasticnature, with mainly regard to the exploitation of this geometry forspace and utilities purposes.This work also includes the development of a typologicalexperimental study, where were considered some of the problemsinherent to the specificity of the "circular plan" as a formal base for thespace conception.In the bibliographic field, there is still a certain lack ofspecific approaches to the theme, which has also become a motivatingfactor for investment in this study.
Lapa, João David Ferreira. "Variações tipológicas da planta circular na arquitetura ocidental". Dissertação, 2015. https://repositorio-aberto.up.pt/handle/10216/81133.
Pełny tekst źródłaThis dissertation resulted from a continuing processregarding a practical experience carried out prior to this study, withinthe discipline of Project IV, which consisted on the development of aproposal for a circular plan building.Currently, in the western urban and architectural landscape,in general, the circular plan is still experienced in an exceptionalmanner relatively to the existing build-up structure. In most of theconstructions where it's used, it is found that its adoption resultsnormally of the application of a program for a very specific use.This study attempts to demonstrate that throughout Historycan also be seen the existence of a plurality of circular plan examples,which have a high programmatic heterogeneity, as well as, havegained a high degree of complexity in their compartmentalizationgeometry.In this work has always existed the criteria of keeping on thesidelines any quantitative or absolute approach, on the issue of circularplan.It is primarily a study that focuses essentially on mattersrelating to the positioning of the circle geometry in the historiographycontext of Western architecture, as well as on the issues of plasticnature, with mainly regard to the exploitation of this geometry forspace and utilities purposes.This work also includes the development of a typologicalexperimental study, where were considered some of the problemsinherent to the specificity of the "circular plan" as a formal base for thespace conception.In the bibliographic field, there is still a certain lack ofspecific approaches to the theme, which has also become a motivatingfactor for investment in this study.