Academic literature on the topic 'Linkage'

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Journal articles on the topic "Linkage"

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Conliffe, Alexandra. "Combating Ineffectiveness: Climate Change Bandwagoning and the UN Convention to Combat Desertification." Global Environmental Politics 11, no. 3 (August 2011): 44–63. http://dx.doi.org/10.1162/glep_a_00068.

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This article examines the role of linkage politics in revitalizing the largely ineffective UN Convention to Combat Desertification (UNCCD). I argue that the UNCCD Secretariat has taken a leadership role in driving a regime linkage agenda that has focused disproportionately on linkages to the UN Framework Convention on Climate Change (UNFCCC). By comparing the UNCCD Secretariat's attempts to build desertification-mitigation and desertification-adaptation linkages, I propose three criteria for predicting whether regime linkages are likely to benefit source regimes (here the UNCCD): the linkage's contribution to source governance goals; the credibility of knowledge presented by the source regime; and the linkage's political feasibility for the target regime. This analysis shows secretariats to be important actors in linkage politics whose actions can lead to both beneficial and harmful outcomes for the regimes they are intended to serve. Finally, by asking whether desertification issues that overlap with climate change might be better addressed under the UNFCCC, I question when regime overlap indicates regime redundancy and warrants regime death.
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Cheng, Yingjie, Peng Song, Yukun Lu, Wen Jie Jeremy Chew, and Ligang Liu. "Exact 3D Path Generation via 3D Cam-Linkage Mechanisms." ACM Transactions on Graphics 41, no. 6 (November 30, 2022): 1–13. http://dx.doi.org/10.1145/3550454.3555431.

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Exact 3D path generation is a fundamental problem of designing a mechanism to make a point exactly move along a prescribed 3D path , driven by a single actuator. Existing mechanisms are insufficient to address this problem. Planar linkages and their combinations with gears and/or plate cams can only generate 2D paths while 1-DOF spatial linkages can only generate 3D paths with rather simple shapes. In this paper, we present a new 3D cam-linkage mechanism, consisting of two 3D cams and five links, for exactly generating a continuous 3D path. To design a 3D cam-linkage mechanism, we first model a 3-DOF 5-bar spatial linkage to exactly generate a prescribed 3D path and then reduce the spatial linkage's DOFs from 3 to 1 by composing the linkage with two 3D cam-follower mechanisms. Our computational approach optimizes the 3D cam-linkage mechanism's topology and geometry to minimize the mechanism's total weight while ensuring smooth, collision-free, and singularity-free motion. We show that our 3D cam-linkage mechanism is able to exactly generate a continuous 3D path with arbitrary shape and a finite number of C 0 points, evaluate the mechanism's kinematic performance with 3D printed prototypes, and demonstrate that the mechanism can be generalized for exact 3D motion generation.
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Song, C. Y., and Y. Chen. "A family of mixed double-Goldberg 6 R linkages." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 468, no. 2139 (November 23, 2011): 871–90. http://dx.doi.org/10.1098/rspa.2011.0345.

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A complete family of double-Goldberg 6 R linkages is reported in this article by combining a subtractive Goldberg 5 R linkage and a Goldberg 5 R linkage through the common link-pair or common Bennett-linkage method. A number of distinct types of overconstrained linkages are built, namely the mixed double-Goldberg 6 R linkages. They all have one degree of freedom and their closure equations are derived in detail. One of them degenerates into a Goldberg 5 R linkage. From the construction process and geometry conditions, the corresponding relationship between the newly found 6 R linkages and the double-Goldberg 6 R linkages, constructed from two Goldberg 5 R linkages or two subtractive Goldberg 5 R linkages, has been established.
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Song, Yu, Chunlu Liu, and Craig Langston. "A LINKAGE MEASURE FRAMEWORK FOR THE REAL ESTATE SECTOR." International Journal of Strategic Property Management 9, no. 3 (September 30, 2005): 121–43. http://dx.doi.org/10.3846/1648715x.2005.9637533.

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Linkage is one of the most important factors for gaining competitive advantage. Information on linkages is essential to understanding the structure of an economy, which is in turn important in formulating industry policies and business strategies. The hypothetical extraction method is used to measure the linkages by extracting a sector hypothetically from an economic system in the literature. In the previous research, however, the internal linkage (linkage within a sector) and sectoral linkages (linkage between two specific sectors) are ignored, and there is not a comprehensive framework to measure the linkages of a specific sector. Using the recently published Organisation for Economic Co‐operation and Development input‐output database at constant prices, this paper aims to resolve these two shortcomings and thereby propose a linkage measure framework to explore the linkages between the real estate sector and other sectors from a new angle. The relative and absolute linkages are termed and the total, backward, forward, internal and sectoral linkage indicators are formulated to investigate the linkages of the real estate sector from all directions. Empirical results show an increasing trend of these linkages, which confirms the increasing role of the real estate sector with economic maturity over the examined period. This framework also can be employed in other sectors.
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Chen, Siyu, Yawu Wang, Pan Zhang, and Chun-Yi Su. "Continuous Control Strategy of Planar 3-Linkage Underactuated Manipulator Based on Broad Neural Network." Actuators 10, no. 10 (September 27, 2021): 249. http://dx.doi.org/10.3390/act10100249.

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For the position control of a planar 3-linkage underactuated manipulator (PTUM) with a passive first linkage, a continuous control strategy is developed in this paper. In particular, a broad neural network (BNN)-based model is first established to accurately describe the motion coupling relationship between the passive linkage and the second linkage. Based on this model, by using the particle swarm optimization algorithm, the target angles of all linkages are calculated combining the start states of all linkages and the target position of the PTUM. Then, the target angles of the active linkages are directly achieved by their respective actuators, and that of the passive linkage is also achieved by the rotation of the second linkage. By carrying out several experiments, the effectiveness of the above strategy is verified.
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Pennock, Gordon R., and Nihar N. Raje. "Coupler Cognates for the Double Flier Eight-Bar Linkage." Journal of Mechanical Design 127, no. 6 (February 14, 2005): 1145–51. http://dx.doi.org/10.1115/1.1992508.

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This paper presents a graphical technique to construct the coupler cognate linkages for the double flier eight-bar linkage. The technique is based on the skew pantograph construction which converts the double flier linkage into a second eight-bar linkage by applying the concepts of stretch rotation and kinematic inversion. Since a stretch-rotation operation preserves the angular velocities of corresponding links of the two linkages then the second linkage has the same input-output motion as the original double flier linkage. Another stretch rotation is performed on the intermediate eight-bar linkage and a third eight-bar linkage, which duplicates the motion of the coupler link of the original linkage, is obtained. This graphical approach, to investigating coupler cognates, is believed to be an original contribution to the study of cognate linkages. The technique can be applied in a straightforward manner, requiring few constructions, and offers significant advantages over well-known analytical techniques which use the locus equation. For the double flier eight-bar linkage, the locus equation is of a high degree and the coefficients can only be obtained from a very laborious procedure. This paper shows the existence of two coupler cognates for each of the two floating binary links of the double flier eight-bar linkage that are connected to the ternary link which is pinned to ground.
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Liu, Xiao, and Jinchuan Shi. "A New Method for Interindustry Linkage Analysis Based on Demand-Driven and Multisector Input-Output Model and Its Application in China’s Manufacturing and Producer Services." Complexity 2020 (August 20, 2020): 1–16. http://dx.doi.org/10.1155/2020/3857981.

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Interindustry linkage analysis is an important interdisciplinary research field of technical economic and complex systems, and the results can be used as critical bases for making strategies and policies of economic development. This study reviews the previous methods for measuring interindustry linkages and their disadvantages and puts forward a new method for interindustry linkage analysis in a complex economic system on the basis of demand-driven and multisector input-output model. Firstly, it makes a further decomposition of the Leontief inverse matrix in the economic sense and decomposes the gross output of one industrial sector or its sub-industries into three components. Then, it analyzes the structural features of output and measures the interindustry linkages between two industrial sectors with three indices: interindustry linkage effect, interindustry linkage contribution, and interindustry linkage coefficient. Compared with the previous measurements, the method in this study has three obvious advantages: it integrates the sectoral internal effect and external linkage effect at the same time; it can not only measure the interindustry linkage effects between two given industrial sectors but also clearly describe the composition ratio of the direct and indirect interindustry linkage effects; and it adopts, respectively, the absolute flow value, relative flow value, and unit relative value to measure the linkages comprehensively. Finally, this study takes China’s input and output in 2017 as an application case to analyze the structural features of output of its manufacturing and producer services and measure the interindustry linkages between them.
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Chung, Wen Yeuan. "Synthesis of Seven-Bar Linkage with Two DOF for Body Guidance." Applied Mechanics and Materials 789-790 (September 2015): 758–62. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.758.

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A linkage with seven links for the task of body guidance is proposed and evaluated. This linkage has two degrees of freedom and is consisted of a four-bar linkage, a dyad, and a floating link. The analysis reveals that at most eleven positions can be prescribed if the linkage is equipped with two actuators. The constituent four-bar linkage and the dyad can be separately synthesized by using well-developed techniques for synthesizing four-bar linkages. Each of them can satisfy five prescribed points together with four swing angles so that this seven-bar linkage can be driven by a single actuator after modification by adding gears. Problems of order defects, branch defects and ratios of link lengths are all considered to ensure the applicability of the synthesized linkages.
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Qi, Xiao Zhi, Zong Quan Deng, Bing Ying Ma, Bing Li, and Rong Qiang Liu. "Design of Large Deployable Networks Constructed by Myard Linkages." Key Engineering Materials 486 (July 2011): 291–96. http://dx.doi.org/10.4028/www.scientific.net/kem.486.291.

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This paper investigates the possibilities of building large deployable mechanical network based on Myard linkage, a 5R overconstrained linkage. The motion configurations of a Myard linkage is first briefly introduced, and the results show that the linkage is a good candidate for forming large spatial deployable structures which can be deployed to a planar configuration and folded to a compact bundle. Three kinds of assembly ways of Myard linkages are introduced. Afterwards, two types of large spatial deployable networks based on Myard linkages with different twist angles are developed.
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Hoetoro, Arif, Deni Aditya Susanto, and . "The Improvement of Inter-Firm Linkages Within Dormant Mse Cluster: a Case of East Java." International Journal of Engineering & Technology 7, no. 3.30 (August 24, 2018): 549. http://dx.doi.org/10.14419/ijet.v7i3.30.18429.

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The stagnant development of MSE clusters might be a priority concern of the government. It has been expected that such clusters need proper policies and regulations to well develop. In East Java, for instance, policies to improve inter-firm linkages within MSE cluster has been perceived as a vital effort to activate the dormant cluster. An effective inter-firm linkages will support the clustered MSEs to overcome their isolation problems so as to augment their productive capacity and enlarge output distribution. By taking the cluster of “Wisata Panci” in Pasuruan, East Java” as research object, this research revealed that inter-firm linkages are very beneficial for the advance development of the cluster. After suffering from financial crisis in 1998, the cluster succeeded to grow and develop to be active cluster.Methodologically, this research examined factors strengthening inter-firm linkages within the cluster by employing Analytical Hierarchy Process (AHP). In doing so, local government and cluster entrepreneurs were deeply interviewed to formulate policy choices related the strategies of inter-firm linkage improvement.The results of this research revealed that entrepreneurs within the cluster give more stressing on forward linkage improvement. Accordingly, horizontal linkage was ranked in second place. And finally, backward linkage was ranked in third place. This study concluded that both local government and entrepreneurs have same perception to more develop the cluster to be active MSEs cluster. It seems that forward linkage, especially consumptiom linkage, plays a vital role for this purpose as clustered MSEs commonly need an effective market channel to distribute their outputs widely. However, backward and horizontal linkages are also important as the linkages support further contribution to forward linkage and spur local business
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Dissertations / Theses on the topic "Linkage"

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Larsen, Stasha Ann Bown. "Record Linkage." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3833.

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This document explains the use of different metrics involved with record linkage. There are two forms of record linkage: deterministic and probabilistic. We will focus on probabilistic record linkage used in merging and updating two databases. Record pairs will be compared using character-based and phonetic-based similarity metrics to determine at what level they match. Performance measures are then calculated and Receiver Operating Characteristic (ROC) curves are formed. Finally, an economic model is applied that returns the optimal tolerance level two databases should use to determine a record pair match in order to maximize profit.
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Sandford, Andrew John. "Linkage analysis of atopy." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358705.

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Song, Yuhyun. "Linkage Based Dirichlet Processes." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/74970.

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We live in the era of textit{Big Data} with significantly richer computational resources than the last two decades. The concurrence of computation resources and a large volume of data has boosted researchers' desire for developing feasible Markov Chain Monte Carlo (MCMC) algorithms for large parameter spaces. Dirichlet Process Mixture Models (DPMMs) have become a Bayesian mainstay for modeling heterogeneous structures, namely clusters, especially when the quantity of clusters is not known with the established MCMC methods. As opposed to many ad-hoc clustering methods, using Dirichlet Processes (DPs) in models provide a flexible and probabilistic approach for automatically estimating both cluster structure and quantity. While DPs are not fully parameterized, they depend on both a base measure and a concentration parameter that can heavily impact inferences. Determining the concentration parameter is critical and essential, since it adjusts the a-priori cluster expectation, but typical approaches for specifying this parameter are rather cavalier. In this work, we propose a new method for automatically and adaptively determining this parameter, which directly calibrates distances between clusters through an explicit link function within the DP. Furthermore, we extend our method to mixture models with Nested Dirichlet Processes (NDPs) that cluster the multilevel data and depend on the specification of a vector of concentration parameters. In this work, we detail how to incorporate our method in Markov chain Monte Carlo algorithms, and illustrate our findings through a series of comparative simulation studies and applications.
Ph. D.
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Pixton, Burdette N. "Improving Record Linkage Through Pedigrees." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1398.pdf.

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Mansfield, Christopher S. "Fault growth by segment linkage." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362794.

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Warren, Mark. "Photocrystallographic studies of linkage isomerism." Thesis, University of Bath, 2011. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538286.

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Davies, Kari. "The practice of crime linkage." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8309/.

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The aim of this thesis was to conduct research into the practice of crime linkage. A literature review was conducted in Chapter 1, finding that the process of crime linkage has started to be explored, although there is scope for much more research in this area. Similarly, while work has been started into crime linkage efficacy and the effect of computerised tools on the process, further work is required. Chapter 2 responded to a 2009 evaluation by Professor Margot of the University of Lausanne about the use of the Violent Crime Linkage Analysis System (ViCLAS). It highlighted a number of issues with the evaluation, but also noted that evaluation of ViCLAS is necessary and requires further exploration. Chapter 3 addressed some of the research gaps highlighted in Chapter 1 by exploring the process of comparative case analysis (CCA), conducted by analysts at the Serious Crime Analysis Section (SCAS). The process was mapped, and the analysts’ decision making processes were discussed in detail, including the behaviours they found useful when linking crimes, the types of searches they conducted, how they decided whether cases were linked, and whether there was any academic research which assisted them. Finally, Chapter 4 aimed to fill some of the research gaps identified in both Chapters 1 and 2 by investigating the interrater reliability coding of ViCLAS in Belgium. Despite improvements to coding uniformity compared to previous research, there is still room for improvement, and the reasons for the associated difficulties of coding was discussed.
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Hernandez-Sanchez, Jules. "Gene mapping using linkage disequilibrium." Thesis, University of Edinburgh, 2002. http://hdl.handle.net/1842/14058.

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The power of QTL detection was studied both empirically and deterministically for several methods. TDT was more powerful than a linkage test, but less powerful than a pure association test. There were no great differences in power between TDTs. One of the TDTs was implemented in BLUP (Best Linear Unbiased Prediction) to study the effect of a candidate gene, the melanocortin 4- receptor (MC4R), on growth, appetite and fatness in pigs. We found significant effects on growth and fatness but not on appetite. TDT uses within families genetic variation. A novel parameter to estimate gene effects using between families genetic variation was also included. If there is no spurious disequilibrium both estimates should be identical, otherwise only the within-families estimator is unbiased. It was more powerful to simulate missing parental genotypes with Gibbs Sampling than analysing data with sib-ship TDTs disregarding parental information. TDT was also used in a genome-wide search for markers associated with bovine spongiform encaphalopathy (BSE). TDT was implemented using logistic regressions, more amenable to statistical modelling than the original form. Maker loci near the Prion Protein gene did not show any associations with BSE, however, markers located on chromosomes 5, 10 and 20, did. A second study that focused on these three chromosomal regions confirmed the association for the marker on chromosome 5. TDT has shown reasonable power and exceptional robustness when mapping QTL in structured populations. Therefore TDT should be part of the gene cartographers’ continuously evolving arsenal of tools for gene mapping. However, previously published TDTs were developed for analysing human populations, whereas domestic/wild populations have different structures and histories that may require alternative statistical analyses. Linked gene flow (LGF) theory can be used for predicting identity-by-descent (IBD) probabilities between individuals. IBD probabilities are at the core of mixed model equations for mapping QTL in outbred populations via variance components estimation. In this thesis, LGF theory was used for determining inbreeding within each individual and chromosomal location using multi-marker information, hence paving the way for further developments.
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Skrivanek, Zachary. "Sequential Imputation and Linkage Analysis." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1039121487.

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Honório, Frederico Santos. "Multi-domain record linkage platform." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11750.

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Mestrado em Engenharia de Computadores e Telemática
This dissertation proposes and presents a technologic framework to perform record linkage. The proposed approach begins by defining a sequence of tasks necessary for record linkage. Then, several methods to split these tasks in small work units are discussed. The solution architecture is based on various executors that carry out the work units in a parallel manner, thereby making the process quicker. Finally, the benefits of using this approach in different contexts are also presented.
Esta dissertação propõe e apresenta uma ferramenta tecnológica que permite realizar mapeamento de registos. A abordagem proposta começa por definir uma sequência de tarefas necessárias para efetuar o mapeamento de registos. São depois discutidos métodos de separar estas tarefas em unidades de trabalho reduzidas. A solução baseia-se numa arquitetura composta por vários executores que levam a cabo essas unidades de trabalho de uma forma paralela, objectivando-se um processo mais rápido. As vantagens da utilização desta abordagem em diferentes contextos são também estudadas.
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Books on the topic "Linkage"

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W, Baskerville Stephen, Hudson Pat 1948-, and Morris R. J, eds. Record linkage. Oxford: Oxford University Press for the Association for History and Computing, 1992.

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Karmel, Rosemary. Data linkage protocols using a statistical linkage key. Canberra: Australian Institute of Health and Welfare, 2005.

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Pak, Chun-gyŏng. Industry-science linkage. Seoul: Korean Development Institute, 2003.

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Authority, Industrial Development, ed. National linkage programme. [Dublin?: IDA Ireland?, 1986.

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Chen, Ying-ping, and Meng-Hiot Lim, eds. Linkage in Evolutionary Computation. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-85068-7.

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Uganda, FSD. Linkage banking in Uganda. Kampala, Uganda: Financial Sector Deepening Uganda, 2017.

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Ltd, Area Development Management. Establishing linkage and synergy. Dublin: Area Development Management Ltd., 1997.

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Jurg, Ott, ed. Handbook of human genetic linkage. Baltimore: Johns Hopkins University Press, 1994.

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Andrew, Collins R. Linkage Disequilibrium and Association Mapping. New Jersey: Humana Press, 2007. http://dx.doi.org/10.1385/1597453897.

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Collins, Andrew R., ed. Linkage Disequilibrium and Association Mapping. Totowa, NJ: Humana Press, 2007. http://dx.doi.org/10.1007/978-1-59745-389-9.

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Book chapters on the topic "Linkage"

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Doolittle, Donald P. "Linkage." In Advanced Series in Agricultural Sciences, 41–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71734-5_9.

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Weik, Martin H. "linkage." In Computer Science and Communications Dictionary, 907. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_10357.

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Bastgen, Sarah. "Linkage." In Die Demokratisierungspotenziale europäischer NGOs, 47–66. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-658-10744-4_4.

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Dmitrović, Slobodan. "Linkage." In Modern C for Absolute Beginners, 319–20. Berkeley, CA: Apress, 2021. http://dx.doi.org/10.1007/978-1-4842-6643-4_48.

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Dmitrović, Slobodan. "Linkage." In Modern C for Absolute Beginners, 327–28. Berkeley, CA: Apress, 2024. http://dx.doi.org/10.1007/979-8-8688-0224-9_48.

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Haughey, Sean. "Linkage." In The Northern Ireland Assembly, 60–93. London: Routledge, 2023. http://dx.doi.org/10.4324/9780429347450-3.

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Woodhams, Jessica, Ray Bull, and Clive R. Hollin. "Case Linkage." In Criminal Profiling, 117–33. Totowa, NJ: Humana Press, 2007. http://dx.doi.org/10.1007/978-1-60327-146-2_6.

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Doolittle, Donald P. "Sex Linkage." In Advanced Series in Agricultural Sciences, 31–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71734-5_7.

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Nagylaki, Thomas. "X-Linkage." In Introduction to Theoretical Population Genetics, 153–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-76214-7_7.

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Clerget-Darpoux, Françoise. "Linkage Analysis." In Genetics of Neuropsychiatric Diseases, 33–41. London: Macmillan Education UK, 1989. http://dx.doi.org/10.1007/978-1-349-10729-2_4.

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Conference papers on the topic "Linkage"

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Han, Jianyou, and Yang Cao. "Synthesis of 4C and RCCC Linkages to Visit Four Positions Based on Solution Region Methodology." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68214.

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This paper synthesizes 4C and RCCC linkages based on the solution region methodology, that is an extension of the synthesis of spherical 4R linkages. The synthesis of spatial RCCC linkages is significantly more complicated than 4C linkages, because they are composed of an RC and a CC dyads. For the four positions problem, there are infinite solutions of the CC dyad, but there is no solution for the RC dyad theoretically. We first synthesize the spherical 4R linkages by setting up spherical 4R linkage solution region using four orientations of four given positions. So the directions of the kinematic pairs for a 4C linkage can be determined by picking a point on the spherical 4R linkage solution region. Then we use the directions of the 4C linkage and the points of four given positions to determine the spatial solution lines for 4C linkages. Next we establish a 4C linkage solution region using the solution lines. Each point on a 4C linkage solution region corresponds to a 4C linkage that visits the four positions. Different point on a spherical 4R linkage solution region corresponds to a different solution region for 4C linkages. Thus, we find the linkage solution on the solution region, which has no sliding displacement between input and fixed links through the four positions. The solution is an RCCC linkage that visits the four positions. Finally, we find all RCCC linkages on many different 4C linkage solution regions and establish the RCCC linkage solution region.
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Wang, Jun, Liangyi Nie, Daxing Zhao, Jun Ren, Quan Wang, Jinfeng Sun, and Kwun-Lon Ting. "Equivalent Five-Bar Linkages for the Singularity Analysis of Two-DOF Seven-Bar Linkages." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67527.

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Equivalent four-bar linkage has been proved to be a simple and general approach for the identification of the singularity (dead center position) of single-DOF complex planar linkages. Based on the concept of equivalent four-bar linkage, this paper proposes the concept of equivalent five-bar linkage and extend this concept to analyze the singularity (dead center position) of three different topologies of two-DOF seven-bar planar linkages for the first time. The five links chosen from the two-DOF seven-bar linkage compose one equivalent five-bar linkage. A singular position may happen when the three passive joints of one equivalent five-bar linkage become collinear. When the equivalent five-bar linkage is at the singular position, the whole two-DOF seven-bar planar linkage must be also at the position of singularity. The propose method offers another geometric insights for the singularity analysis of two-DOF seven-bar planar linkages and other multiple-DOF planar linkages.
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Huang, Chintien, Xianwen Kong, and Tzuhsiu Ou. "Position Analysis of a Bennett-Based Multiple-Mode 7R Linkage." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87241.

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This paper deals with the position analysis of a multiple-mode 7R spatial linkage. The 7R linkage is constructed by combining two Bennett linkages with a common joint. As a result, the motions of the Bennett linkages are embedded in the multiple-mode 7R linkage, and there are three operation modes of the linkage: two Bennett modes and one 7R mode. The algorithms for solving the inverse kinematics of serial 6R manipulators are employed to find all possible configurations of the 7R linkage at a given value of the driving joint angle. The analysis is then conducted for a full rotation of the driving joint. The result of the analysis gives all feasible configurations of the linkage for a full rotation of the driving joint. According to the result of analysis, the motion of the linkage can be clearly divided into the three operation modes, and the linkage can switch between two modes at various connecting configurations. Furthermore, because of the two Bennett modes, the linkage can reach all feasible configurations without being taken apart and reassembled. This paper provides insight into the kinematics of multiple-mode single-loop 7R linkages constructed by combining paradoxic linkages.
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Wang, Jun, Liangyi Nie, Quan Wang, Jinfeng Sun, Ying You, Daxing Zhao, and Kwun-Lon Ting. "Singularity Analysis of Planar Multiple-DOF Linkages." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34213.

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Singularity analysis of multi-DOF (multiple-degree-of-freedom) multiloop planar linkages is much more complicated than the single-DOF planar linkages. This paper offers a degeneration method to analyze the singularity (dead center position) of multi-DOF multiloop planar linkages. The proposed method is based on the singularity analysis results of single-DOF planar linkages and the less-DOF linkages. For an N-DOF (N>1) planar linkage, it generally requires N inputs for a constrained motion. By fixing M (M<N) input joints or links, the N-DOF planar linkage degenerates an (N-M)-DOF linkage. If any one of the degenerated linkages is at the dead center position, the whole N-DOF linkage must be also at the position of singularity. With the proposed method, one may find out that it is easy to obtain the singular configurations of a multiple-DOF multiloop linkage. The proposed method is a general concept in sense that it can be systematically applied to analyze the singularity for any multiple-DOF planar linkage regardless of the number of kinematic loop or the types of joints. The velocity method for singularity analysis is also used to verify the results. The proposed method offers simple explanation and straightforward geometric insights for the singularity identification of multiple-DOF multiloop planar linkages. Examples are also employed to demonstrate the proposed method.
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5

Ting, Kwun-Lon, and J. H. Shyu. "Joint Rotation Space of Five-Bar Linkages." In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0283.

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Abstract Unlike single degree of freedom linkages, the rotatability at a joint of a five-bar linkage is affected by the rotatability at another joint. Unless the linkage has full rotatability, the allowable inputs of a five-bar linkage are related. This article, by taking the interrelationship between the rotatability of two input angles into consideration, presents the most extensive study on the rotatability of five-bar linkages. The joint rotation space of a five-bar linkage is the region between the singular curves which represent the relationship between the input angular positions of the linkage at singular positions. By distinguishing five-bar linkages into C-C (crank-crank), C-R (crank-rocker), and R-R (rocker-rocker) types, there are totally nine C-C types, four C-R types and four R-R types of joint rotation space in classes I and II five-bar linkages. The results in this paper are essential for understanding the basic mobility and limitation of five-bar linkages. One may also find them useful in manipulators or multi-loop linkages which have a five-bar chain as the major or minor structure. The results are also applicable to spherical five-bar linkages.
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Hui-Ping, Shen, and Yang Ting-Li. "A Numerical Method and Automatic Generation for Determining the Assemblage Configurations of Complex Planar Linkages Based on the Ordered Single-Opened-Chains." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/mech-1030.

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Abstract This paper presents a simple numerical evaluation method for solving all possible assembly configurations on an any position of the input link of some complex planar linkages according to the structural theory of mechanism based on the ordered Single-Opened-Chains (S.O.Cs). This method can simultaneously checks on whether the input link is a crank of the linkage. This paper also discovers that full-cycle ratability (F.C.R) of a linkage depends on not only the length of links of the linkage but also the different assembly configurations of the linkage after analysis of assemblage configurations. The illustration for solution and analysis of assembly configurations of a complex planar linkage is given in detail. This paper provides the actual assembly of linkages and the optimization of structure synthesis of linkages with some important information.
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Sun, Zhaonan, Fei Wang, and Jianying Hu. "LINKAGE." In KDD '15: The 21th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2783258.2783324.

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8

Björneborn, Lennart. "Small-world linkage and co-linkage." In the twelfth ACM conference. New York, New York, USA: ACM Press, 2001. http://dx.doi.org/10.1145/504216.504252.

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9

Ting, Kwun-Lon, Changyu Xue, Jun Wang, and Kenneth R. Currie. "On the Mobility of Spatial Group 2 Mechanisms." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87372.

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Spatial linkages are classified into four groups according to the number of fundamental equations or virtual loops that govern linkage displacement. The number of virtual loops represents the complexity of a spatial linkage as that of planar or spherical multiloop linkages. The concept of generalized branch points offers the explanation of how branches are formed in spatial group 2 linkages. In this paper, the mobility analysis is carried out based on the similarity of the mobility features rather than the specific or individual linkage structure. A branch rectification scheme is presented and demonstrated with examples.
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Zhang, Ketao, and Jian S. Dai. "A Family of Overconstrained 6R Linkages With the Rotational Symmetry of Order 2." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70544.

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This paper presents a family of overconstrained 6R linkages with the rotational symmetry of order 2 which refers to rotation by an angle of 360°/n (n = 2) with respect to a particular axis leaves the linkage unchanged. The overconstrained 6R linkages are evolved from a reconfigurable 8R linkage which is extracted from deployable origami-fold. The structure evolution of the 8R linkage takes the concept of metamorphosis in the sense of structural evolution. This leads to a generic way for investigating new mechanisms inspired from origami fold. The geometry and two-fold rotational symmetry reveal that the overconstrained 6R linkages are special line-symmetric Bricard 6R loops and the parametric constraints of the 6R linkages are identified. The kinematics of the overconstrained 6R linkage is analyzed and motion parameters of the joint space are derived. The unique mobility of the overconstrained 6R linkages is further verified in terms of screw theory.
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Reports on the topic "Linkage"

1

Perla, Peter P., and Michael C. Markowitz. Wargaming Strategic Linkage. Fort Belvoir, VA: Defense Technical Information Center, January 2009. http://dx.doi.org/10.21236/ada494300.

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2

Stevens, J. G. The REBUS-MCNP linkage. Office of Scientific and Technical Information (OSTI), April 2009. http://dx.doi.org/10.2172/964248.

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Harron, Katie. Introduction to Data Linkage. Instats Inc., 2024. http://dx.doi.org/10.61700/gjugifuawsocg1185.

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This introduction to data linkage, led by Professor Katie Harron from UCL and Dr James Doidge from the Intensive Care National Audit and Research Centre (ICNARC), is a comprehensive workshop designed to equip researchers with an understanding of how to combine data from different sources. Covering principles, benefits, challenges, techniques, and ethical considerations, the seminar provides hands-on experience through practical exercises and case studies, making it an invaluable resource for PhD students, professors, and professional researchers.
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4

Naoe, Gaku, and Kota Tokubi. Research on Noise Reduction of Linkage Drive Gear in Extended Expansion Linkage Engine. Warrendale, PA: SAE International, November 2011. http://dx.doi.org/10.4271/2011-32-0538.

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5

Whelan, Gene, and Karl J. Castleton. Examining the Linkage Between FRAMES and GMS. Office of Scientific and Technical Information (OSTI), February 2006. http://dx.doi.org/10.2172/894487.

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Smith, C. L., J. K. Knudsen, and D. L. Kelly. Linkage of PRA models. Phase 1, Results. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/195784.

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7

Cole, Richard A., John B. Loomis, Timothy D. Feather, and Donald T. Capan. Linkage Between Environmental Outputs and Human Services,. Fort Belvoir, VA: Defense Technical Information Center, February 1996. http://dx.doi.org/10.21236/ada320081.

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8

Belanger, Faith, Nativ Dudai, and Nurit Katzir. Genetic Linkage Mapping of Basil (Ocimum basilicum). United States Department of Agriculture, March 2010. http://dx.doi.org/10.32747/2010.7593385.bard.

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The ultimate goal of this project is to develop a genetic linkage map of basil (Ocimumbasilicum). We received 1 year of funding from BARD to conduct a feasibility study. Below is a summary of our study. During this year we evaluated the cultivars ‘Perrie’ and ‘Cardinal’ for DNA sequence polymorphisms using AFLPs and gene-based markers. We evaluated an F2 population for variation in production of volatile compounds. We also determined the nuclear DNA content of 8 species of Ocimum. All of this information will be useful in the future for genetic linkage mapping of basil.
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9

Wilcox, Holly C., Lawrence Wissow, Hadi Kharrazi, Renee F. Wilson, Rashelle J. Musci, Allen Zhang, and Karen A. Robinson. Data Linkage Strategies to Advance Youth Suicide Prevention. Agency for Healthcare Research and Quality, September 2016. http://dx.doi.org/10.23970/ahrqepcerta222.

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10

Sun, Xiaochen, Rohan L. Fernando, Dorian J. Garrick, and Jack C. M. Dekkers. Genomic Prediction Using Linkage Disequilibrium and Co-segregation. Ames (Iowa): Iowa State University, January 2013. http://dx.doi.org/10.31274/ans_air-180814-1253.

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