Relevant bibliographies by topics / Space mechanisms

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Space mechanisms'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Space mechanisms"

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Martin, Annie, and Catherine Beaudry. "Measuring Collaboration Mechanisms in the Canadian Space Sector." New Space 3, no. 3 (September 2015): 172–78. http://dx.doi.org/10.1089/space.2015.0006.

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Fowler, R. M., L. L. Howell, and S. P. Magleby. "Compliant space mechanisms: a new frontier for compliant mechanisms." Mechanical Sciences 2, no. 2 (October 20, 2011): 205–15. http://dx.doi.org/10.5194/ms-2-205-2011.

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Abstract. Compliant mechanisms offer distinct advantages for use in space that can address many of the issues encountered with current rigid-link space mechanisms. Compliant space mechanisms are defined as moveable mechanical assemblies that achieve their desired motion, force, or displacement by means of the deflection of flexible members and can perform a necessary function in the environments of launch and space. Many current space mechanisms are already highly optimized, yet they still experience inherent challenges, and it is unclear if significant improvements in performance can be made by continuing to refine current designs. Compliant space mechanisms offer a promising opportunity to change the fundamental approach to achieving controlled motion in space systems and have potential for dramatic increases in mechanism performance given the constraints of the space environment. This paper proposes the merger of the fields of compliant mechanisms and space mechanisms as a future direction of research in compliant mechanisms, discusses in detail the motivation to do so, and addresses the key factors of applying compliant mechanism technology to space mechanisms.
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NISHIMURA, Makoto. "Tribology of Space Mechanisms." SHINKU 38, no. 6 (1995): 560–65. http://dx.doi.org/10.3131/jvsj.38.560.

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NISHIMUR, Makoto. "Tribology of Space Mechanisms." Journal of the Japan Society for Precision Engineering 59, no. 2 (1993): 213–16. http://dx.doi.org/10.2493/jjspe.59.213.

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Roberts, Mr D. Wyn. "Space mechanisms and tribology." Tribology International 18, no. 2 (April 1985): 129. http://dx.doi.org/10.1016/0301-679x(85)90056-8.

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Sugimoto, K. "Existence Criteria for Over-Constrained Mechanisms: An Extension of Motor Algebra." Journal of Mechanical Design 112, no. 3 (September 1, 1990): 295–98. http://dx.doi.org/10.1115/1.2912607.

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The new concept of a mobile screw space is introduced in this paper. A mobile screw space is a set of motors for which the outer product of any two arbitrary elements belongs to the original set. It is shown that the condition for the existence of almost all existing over-constrained mechanisms is related to the mobile screw space, that is, all joint motors of the mechanism either belongs to a mobile screw space or belong to a space which is given as the sum of mobile spaces. Determining an over-constrained mechanism on the basis of this condition makes it possible to generate many mechanisms, including most presently known over-constrained mechanisms.
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Cahan, Bruce B., R. Bruce Pittman, Sarah Cooper, and John Cumbers. "Space Commodities Futures Trading Exchange: Adapting Terrestrial Market Mechanisms to Grow a Sustainable Space Economy." New Space 6, no. 3 (September 2018): 211–26. http://dx.doi.org/10.1089/space.2017.0047.

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Zirbel, Shannon A., Kyler A. Tolman, Brian P. Trease, and Larry L. Howell. "Bistable Mechanisms for Space Applications." PLOS ONE 11, no. 12 (December 28, 2016): e0168218. http://dx.doi.org/10.1371/journal.pone.0168218.

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Tan, Bing Qing, Su Xiu Xu, Ray Zhong, Meng Cheng, and Kai Kang. "Sequential auction based parking space sharing and pricing mechanism in the era of sharing economy." Industrial Management & Data Systems 119, no. 8 (September 9, 2019): 1734–47. http://dx.doi.org/10.1108/imds-04-2019-0244.

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Purpose The purpose of this paper is to design a parking space management platform to alleviate the parking problem and a two-stage solution for sharing and allocating parking spaces. Design/methodology/approach The market design mechanism and auction mechanism are integrated to solve the problem of parking space sharing and allocation. In the first stage, the market design mechanism with two rules is applied for making the good use of idle parking spaces. In the second stage, two sequential auction mechanisms are designed by extending first/second-price sealed bid auction mechanism to allocate both private and public parking spaces, which are received in previous stage and owned by the platform. Two stages are connected through a forecasted price which is calculated through the exponential smoothing method. Findings First, we prove three important properties of the proposed sequential auction mechanisms, namely, incentive compatibility, revenue equivalence and individual rationality. Second, a simulation study is used to verify the effectiveness of the mechanisms through numerical analysis. The impact of the system on three parts, namely, agents (private parking space suppliers), bidders (parking space customers) and the platform, is examined. Third, the results show that the sharing mechanism with monetrary incentive will attract a number of agents to join in the platform. The bidders are also able to obtain considerable utility, as compared with the (average) market parking fees. The platform can thus effectively allocate parking spaces with reasonable prices. Originality/value This paper combines the classical sequential auction mechanisms with the market design mechanism for the parking space sharing and allocation problem. The modeling and analysis method can also be used to address the similar allocation and pricing problems of other resources like bicycle sharing.
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Eiden, Michael, and René Seiler. "Space mechanisms and tribology challenges of future space missions." Acta Astronautica 55, no. 11 (December 2004): 935–43. http://dx.doi.org/10.1016/j.actaastro.2004.04.011.

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Dissertations / Theses on the topic "Space mechanisms"

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Zirbel, Shannon Alisa. "Compliant Mechanisms for Deployable Space Systems." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5612.

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The purpose of this research is to develop fundamentals of compliant mechanisms in deployable space systems. The scope was limited to creating methods for thick origami, developing compliant deployable solar arrays, and developing methods for stowing and deploying the arrays. The research on actuation methods was focused on a one-time deployment of the array. Concepts for both passive and active actuation were considered. The primary objective of this work was to develop approaches to accommodate thickness in origami-based deployable arrays with a high ratio of deployed-to-stowed diameter. The HanaFlex design was derived from the origami flasher model and is developed as a deployable solar array for large arrays (150 kW or greater) and CubeSat arrays (60 W). The origami folding concept enables compact stowage of the array, which would be deployed from a hexagonal prism into a flat array with about a 10-times increase in deployed diameter as compared to stowed diameter. The work on the origami pattern for the solar array was also applied to the folding of 80-100 m2 solar sails for two NASA CubeSat missions, NEA-Scout and Lunar Flashlight. The CubeSat program is a promising avenue to put the solar array or solar sails into space for testing and proving their functionality. The deployable array concept is easily scalable, although application to CubeSats changes some of the design constraints. The thickness-to-diameter ratio is larger, making the issues of thickness more pronounced. Methods of actuation are also limited on CubeSats because of the rigorous size and weight constraints. This dissertation also includes the development of a compact, self-deploying array based on a tapered map fold design. The tapered map fold was modified by applying an elastic membrane to one side of the array and adequately spacing the panels adjacent to valley folds. Through this approach, the array can be folded into a fully dense stowed volume. Potential applications for the array include a collapsible solar array for military or backpacking applications. Additional compliant mechanism design was done in support of the HanaFlex array. This included a serpentine flexure to attach the array to the perimeter truss for deployment, and a bistable mechanism that may be used in the deployment of the array or sail.
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Merriam, Ezekiel G. "Fully Compliant Mechanisms for Bearing Subtraction in Robotics and Space Applications." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3564.

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Robotics and space applications represent areas where compliant mechanisms can continue to make a significant impact by reducing costs and weight while improving performance. Because of the nature of these applications, a common need is for bearing replacement mechanisms, or mechanisms that perform the function of a bearing without the complexity and failure modes associated with bearings. Static balancing is a design strategy that attempts to reduce the actuation effort of a mechanism, and has been applied to compliant mechanisms in some applications. Monolithic construction, especially by means of 3D printing technology, is a strategy whereby the mechanism links and joints are built as a single "chunk" of material. This eliminates assembly and failure modes associated with wear and friction in traditional joints. In this work we examine these design strategies in the context of robotics and space applications. Matlab and Ansys batch files can be found in Appendix A. A fully compliant zero-torque, statically balanced mechanism is described that can undergo greater than 100 of motion. Because compliant mechanisms achieve their motion from the deflection of their constituent members, there is some strain energy associated with actuated positions. By introducing an appropriate pre-load, strain energy can be held constant. This can reduce or nearly eliminate the input force required from the actuating device. This paper describes the statically balanced rotary joint concept, and demonstrates its optimization, testing, and implementation for a haptic pantograph mechanism. The statically balanced properties of the constituent joints result in a mechanism with two balanced degrees of freedom. Matlab and Ansys batch files can be found in Appendix B. The conception, modeling, and development of a fully compliant two-degree-of-freedom pointing mechanism for application in spacecraft thruster, antenna, or solar array systems is described. The design objectives and the advantages of a compliant solution are briefly discussed. A single design concept is selected for final development from a field of generated concepts. Analytical and numerical models are accompanied by prototype testing and measurements in several iterations. A final design is described in detail, a fully compliant prototype is fabricated in titanium, and its performance is measured.
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Manganas, Phanee. "Oxidative regulation mechanisms in the mitochondrial intermembrane space." Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/8568/.

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Oxidative stress occurs when cells are unable to cope with the levels of various reactive oxygen species (ROS) that arise as part of regular cellular metabolism or in response to ionising radiation (H2O2, O2-, OH-). The most well studied ROS is H2O2, due to its dual role as a mediator of oxidative stress and a signalling molecule for many cellular pathways. Cells possess a number of different mechanisms to combat ROS, in order to prevent their levels from becoming toxic. In this thesis, we studied three different aspects of the antioxidant defence in Saccharomyces cerevisiae. In the first part, we explored the role of erythroascorbic acid – the yeast analogue of ascorbic acid (vitamin C) – and attempted to determine its role as an antioxidant in yeast. Our results were inconclusive, though there were indications that the presence of erythroascorbic acid may have a protective effect on the mitochondrial inner membrane potential (ΔΨ), protecting it from depolarisation. The second part focused on elucidating the mitochondrial targeting of the main H2O2 sensor Gpx3 and, more specifically, whether the Yap1-binding proteins, Ybp1 and Ybp2, have an effect on the import of Gpx3 in yeast mitochondria. Our results show a slight effect of Ybp1 (but not Ybp2) on the import of Gpx3, indicating that Ybp1 may act as a chaperone for the more efficient targeting of Gpx3 from the cytosol to the outer mitochondrial membrane and, as a result, its eventual translocation into the IMS. The final part of this thesis focused on elucidating the import of Trx1 and Trr1 in the mitochondrial IMS, as well as their function in this particular subcompartment. The discovery of two members of the thioredoxin system in the IMS is important, due to the absence of a known reducing mechanism in this oxidising compartment. Our results determined that several well-known import factors are dispensable for the import of either Trx1 or Trr1, indicating that they follow a yet unknown pathway for their translocation into the IMS. Importantly, we showed that Trx1 is reduced (and thus, active) in the IMS and that it can interact in vitro with both components of the MIA machinery (Mia40 and Erv1), while in organello experiments showed that Trx1 most probably interacts with a large number of Mia40 substrates.
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Regueiro, Richard Anderson. "Modeling passing damping mechanisms of large space structures." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/49912.

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Fried, Limor. "Social defense mechanisms : tools for reclaiming our personal space." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33151.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.
Includes bibliographical references (leaf 67).
In contemporary Western society, electronic devices are becoming so prevalent that many people find themselves surrounded by technologies they find frustrating or annoying. The electronics industry has little incentive to address this complaint; I designed two counter-technologies to help people defend their personal space from unwanted electronic intrusion. Both devices were designed and prototyped with reference to the culture-jamming "Design Noir" philosophy. The first is a pair of glasses that darken whenever a television is in view. The second is low- power RF jammer capable of preventing cell phones or similarly intrusive wireless devices from operating within a user's personal space. By building functional prototypes that reflect equal consideration of technical and social issues, I identify three attributes of Noir products: Personal empowerment, participation in a critical discourse, and subversion.
by Limor Fried.
M.Eng.
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Takaya, Yuri. "Space security and international law : verification and monitoring mechanisms." Paris 11, 2009. http://www.theses.fr/2009PA111020.

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Godsall, Ben. "Mechanisms of space use in the wood mouse, Apodemus sylvaticus." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/25280.

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"Space use" describes a wide set of movement behaviours that animals display to acquire the resources necessary for their survival and reproductive success. Studies across taxa commonly focus on the relationships between space use and individual-, habitat- and population-level factors. There is growing evidence, however, that variation in space use between individuals can also occur due to differences in 'personalities' and genetic variation between individuals. Using a wild population of the European wood mouse, Apodemus sylvaticus, this thesis aims to: i) investigate the roles of individual-level (body mass, body fat reserves and testosterone), habitat-level (Rhododendron and logs) and population-level (population density, sex ratio and season) factors as drivers of individual variation in the emergent space use patterns of individual home range size and home range overlap, estimated using spatial data collected in a mixed-deciduous woodland over three years. ii) Establish a link between genes and space use through the heritability and response to selection of phenotypic traits linked to individual variation in space use. A pedigree of the population is reconstructed from microsatellite data. Individual reproductive success is estimated from it and used to estimate selection gradients for three phenotypic traits. Heritability estimates are calculated using the animal model and together with selection gradients are used to predict the generational change in the population mean of traits using the Breeders equation. The results of this thesis suggest that the mechanism behind space use in this population of A. sylvaticus involves interactions between season, habitat, sex and the three individual-level factors (body mass, body fat and testosterone). The heritability of traits linked to emergent space use patterns suggests indirect effects of genes on individual variation in space use. Small responses to selection for traits suggests that gene-driven changes to space use patterns will most likely be indistinguishable between generations.
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Sonner, Sarah. "Black Boxes : Airport Space, Liminal Mechanisms, and Systems of Autobiography." Thesis, Goldsmiths College (University of London), 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.499155.

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Treating the first-person experience of airport space as an ethnographic tool, this thesis examines spatial perception and its breakdown in multiple examples of imagined and real twentiethcentury spatial constructs. First, it considers examples of failed or redundant mechanisms which function as liminal constructs, either through their presence as physical objects or through use as tools with which to perceive liminal spaces. It emphasizes their function as points of access for narrative and delineates their status as examples of failure in relation to Bruno Latour's use of the term "black box," appropriated from the world of air crash investigation, and to Walter Benjamin's collection and juxtaposition of research in Tbe Arcades Project. Second, it explores the type and sequence of spaces encountered by a traveller in a large contemporary international airport, and those behaviours that are inscribed and prescribed upon people and mechanisms therein. It critiques Marc Auge' s ideas of the "non-place" through explorations of a distinctly airport-specific culture and possible deconstructions of airport space by passenger use and mechanical and architectural functions. Finally, it relates these to narrative space through an examination and practice of systemic approaches to autobiography in works by Georges Perec, Michel Leiris, and Raymond Queneau. It uses the first-person construction of a narrative of airport space-a first-person "silent reading" of public space-to construct a system of research through which twentieth-century liminal space may be inhabited and critiqued from within and on its own terms. Thus the constraint and potential offered by these diverse liminal spaces are deconstructed in terms of the personal narrative, and through use of airport space demonstrate an inhabiting of research through an innovative and revealing method
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Burton, Pamela Ann. "Physiological evidence of interactive object-based and space-based attention mechanisms." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 50.79Mb,139 p, 2005. http://wwwlib.umi.com/dissertations/fullcit/3157279.

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Fowler, Robert McIntyre. "Investigation of Compliant Space Mechanisms with Application to the Design of a Large-Displacement Monolithic Compliant Rotational Hinge." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3305.

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The purpose of this research is to investigate the use of compliant mechanisms in space applications and design, analyze, and test a compliant space mechanism. Current space mechanisms are already highly refined and it is unclear if significant improvements in performance can be made by continuing to refine current designs. Compliant mechanisms offer a promising opportunity to change the fundamental approach to achieving controlled motion in space systems and have potential for dramatic increases in mechanism performance given the constraints of the space environment. A compliant deployment hinge was selected for development after industry input was gathered. Concepts for large-displacement compliant hinges are investigated. A design process was developed that links the performance requirements of deployment to the design parameters of a deployment hinge. A large-displacement monolithic compliant rotational hinge, the Flex-16, is designed, analyzed, and tested. It was developed for possible application as a spacecraft deployment hinge and designs were developed using three different materials (polypropylene, titanium, and carbon nanotubes) and manufacturing processes (CNC milling, electron beam manufacturing metal rapid prototyping, and a carbon nanotube framework) on two size scales (macro and micro). A parametric finite element model allowed for prediction of prototype behavior before fabrication. The Flex-16 hinge is capable of 90 degrees of deflection without failure or contact and can be designed to meet industry requirements for space.
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Books on the topic "Space mechanisms"

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European Space Mechanisms & Tribology Symposium. (2d 1985 Schloss Meersburg, Germany). Second European Space Mechanisms & Tribology Symposium. Paris: European Space Agency, 1985.

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Agency, European Space. Second European Space Mechanisms & Tribology Symposium. Paris: European Space Agency, 1985.

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Fusaro, Robert L. Space mechanisms needs for future NASA long duration space missions. Cleveland, Ohio: NASA, Lewis Research Center, 1991.

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David, Ingle, Jeannerod Marc, Lee David N, and North Atlantic Treaty Organization. Scientific Affairs Division., eds. Brain mechanisms and spatial vision. Dordrecht: Nijhoff, 1985.

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Mukherjee, Ranjan. Stabilization of free-flying underactuated mechanisms in space. Monterey, Calif: Naval Postgraduate School, 1991.

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Faltings, Boi. Qualitative place vocabularies for mechanisms in configuration space. Urbana, IL (1304 W. Springfield Ave., Urbana 61801): Dept. of Computer Science, University of Illinois at Urbana-Champaign, 1987.

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1961-, Joskowicz Leo, ed. The configuration space method for kinematic design of mechanisms. Cambridge, Mass: MIT Press, 2010.

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Sacks, Elisha. The configuration space method for kinematic design of mechanisms. Cambridge, MA: The MIT Press, 2010.

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Technology, Massachusetts Institute of, ed. Head direction cells and the neural mechanisms of spatial orientation. Cambridge, Mass: MIT Press, 2005.

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Belgium) European Space Mechanisms & Tribology Symposium (9th 2001 Liège. 9th European Space Mechanisms and Tribology Symposium: 19-21 September 2001 Liège, Belgium. Noordwijk: ESA Publications Division, 2001.

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Book chapters on the topic "Space mechanisms"

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da Fonseca, Ijar M. "Space Robotics and Associated Space Applications." In Mechanisms and Machine Science, 151–70. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-60694-7_9.

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Henderson, Stacey. "Space Dispute Resolution Mechanisms." In Commercial and Military Uses of Outer Space, 97–110. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8924-9_8.

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Vainio, Rami, and Alexandr Afanasiev. "Particle Acceleration Mechanisms." In Astrophysics and Space Science Library, 45–61. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-60051-2_3.

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Bisnovatyi-Kogan, G. S. "Mechanisms of Jet Formation." In Astrophysics and Space Science Library, 369–82. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1924-5_70.

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Verheest, Frank. "Charging Mechanisms and Experiments." In Waves in Dusty Space Plasmas, 11–39. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-010-9945-5_2.

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Sun, Xiaojun. "Solid Lubricants for Space Mechanisms." In Encyclopedia of Tribology, 3165–72. Boston, MA: Springer US, 2013. http://dx.doi.org/10.1007/978-0-387-92897-5_1230.

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Miglioreno, Gerard, and Torben K. Henriksen. "Structure, Mechanisms and Deployables." In The International Handbook of Space Technology, 197–247. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41101-4_9.

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Sánchez Almeida, J. "The dynamic magnetic quiet Sun: physical mechanisms and UV signature." In Space Astronomy, 125–31. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-90-481-3006-1_21.

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Janka, H. Thomas, Robert Buras, Konstantinos Kifonidis, Markus Rampp, and Tomek Plewa. "Explosion Mechanisms of Massive Stars." In Astrophysics and Space Science Library, 65–97. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-0-306-48599-2_3.

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Bournaud, Frederic, and Francoise Combes. "Bar Dissolution and Reformation Mechanisms." In Astrophysics and Space Science Library, 165–74. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2862-5_13.

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Conference papers on the topic "Space mechanisms"

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Meftah, M., A. Irbah, R. Le Letty, M. Barré, S. Pasquarella, M. Bokaie, A. Bataille, and G. Poiet. "Mechanisms for space applications." In SPIE Defense, Security, and Sensing. SPIE, 2012. http://dx.doi.org/10.1117/12.917580.

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Lusk, Craig P., and Larry L. Howell. "Construction of the Design Space of Single-Loop Change-Point Mechanisms." In ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57503.

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Change-point mechanisms are shown to be significant in the design of surface micromachined MEMS. The design space of change-point mechanisms is derived for an arbitrary single loop change-point mechanism using a global and local approach. A function on the design space, the mechanism’s length, is constructed for fourbars. An inversion operator, a mapping from the design space to the design space, is also constructed for fourbars. The method for constructing the function and the operator is shown to be capable of extension to single loop change-point mechanisms with five or more links. The results give insight into design possibilities and limitations of change-point mechanisms.
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Gilmore, Adam, Brent Evernden, Lynda Estes, Jeff Logan, Jim Eilers, Kelly Carney, Will Decker, et al. "Space Shuttle Orbiter Structures & Mechanisms." In AIAA SPACE 2011 Conference & Exposition. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-7158.

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Cook, John, Valery Aksamentov, Thomas Hoffman, and Wes Bruner. "ISS Interface Mechanisms and their Heritage." In AIAA SPACE 2011 Conference & Exposition. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-7150.

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Jau, Bruno M., Colin M. McKinney, Robert F. Smythe, and Dean Palmer. "Alignment mirror mechanisms for space use." In 2011 IEEE Aerospace Conference. IEEE, 2011. http://dx.doi.org/10.1109/aero.2011.5747381.

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Mueller, Robert P., Ivan I. Townsend, and Gabor J. Tamasy. "Dust Tolerant Commodity Transfer Interface Mechanisms for Planetary Surfaces." In Earth and Space 2014. Reston, VA: American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784479179.037.

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Horie, Mikio. "Polymer-made lightweight planar mechanisms and spatial mechanisms for space robots." In 2017 8th International Conference on Mechanical and Aerospace Engineering (ICMAE). IEEE, 2017. http://dx.doi.org/10.1109/icmae.2017.8038629.

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FUSARO, ROBERT. "Space mechanisms needs for future NASA long duration space missions." In Conference on Advanced SEI Technologies. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-3428.

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Poedts, S., A. Soenen, F. P. Zuccarello, C. Jacobs, B. van der Holst, and Ivan Zhelyazkov. "Magnetic Flux Emergence and Shearing Motions as Trigger Mechanisms for Coronal Mass Ejections." In SPACE PLASMA PHYSICS: School of Space Plasma Physics. AIP, 2009. http://dx.doi.org/10.1063/1.3137949.

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Ding, Jianzhong, Shengnan Lu, Ting Da, Chunjie Wang, and Gregory S. Chirikjian. "Conservative Error Space Estimation of 3-DoF Planar Parallel Mechanisms." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85849.

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This article develops a geometric method to estimate the error space of 3-DoF planar mechanisms with the Minimum Volume Ellipsoid Enclosing (MVEE) approach. Both the joint clearance and input uncertainty are considered in this method. Three typical planar parallel mechanisms are used to demonstrate. Error spaces of their serial limbs are analyzed, respectively. Thereafter, limb-error-space-constrained mobility of manipulator, namely, the manipulator error space is analyzed. MVEE method has been applied to simplify the constraint modeling. A closed-form expression for the manipulator error space is derived. The volume of the manipulator error space is numerically estimated. The study approached in this paper develops a geometric error analysis method of parallel mechanisms with clear algebraic expressions. Moreover, far fewer forward kinematics computations have been performed in the proposed method than in the widely used interval analysis method. Although the estimated error space is larger than that in practice, due to the enclosing ellipses enlarge the regions of limb error space, the method has attractive advantage of high computational efficiency.
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Reports on the topic "Space mechanisms"

1

CJ Larkin, JD Edington, and BJ Close. A Review of Tribological Coatings for Control Drive Mechanisms in Space Reactors. Office of Scientific and Technical Information (OSTI), February 2006. http://dx.doi.org/10.2172/884665.

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2

Koga, Rokutaro, and Wojciech A. Kolasinski. Effects of Heavy Ions on Microcircuits in Space: Recently Investigated Upset Mechanisms. Fort Belvoir, VA: Defense Technical Information Center, October 1988. http://dx.doi.org/10.21236/ada201711.

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3

Chew, G. F. Space and time from quantum mechanics. Office of Scientific and Technical Information (OSTI), September 1992. http://dx.doi.org/10.2172/10163929.

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Chew, G. F. Space and time from quantum mechanics. Office of Scientific and Technical Information (OSTI), September 1992. http://dx.doi.org/10.2172/6077034.

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Hermann, George. Coupled Fields and Mechanics in Material Space. Fort Belvoir, VA: Defense Technical Information Center, October 1995. http://dx.doi.org/10.21236/ada329653.

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6

Pavlyuk, Ihor. MEDIACULTURE AS A NECESSARY FACTOR OF THE CONSERVATION, DEVELOPMENT AND TRANSFORMATION OF ETHNIC AND NATIONAL IDENTITY. Ivan Franko National University of Lviv, February 2021. http://dx.doi.org/10.30970/vjo.2021.49.11071.

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The article deals with the mental-existential relationship between ethnoculture, national identity and media culture as a necessary factor for their preservation, transformation, on the example of national original algorithms, matrix models, taking into account global tendencies and Ukrainian archetypal-specific features in Ukraine. the media actively serve the domestic oligarchs in their information-virtual and real wars among themselves and the same expansive alien humanitarian acts by curtailing ethno-cultural programs-projects on national radio, on television, in the press, or offering the recipient instead of a pop pointer, without even communicating to the audience the information stipulated in the media laws − information support-protection-development of ethno-culture national product in the domestic and foreign/diaspora mass media, the support of ethnoculture by NGOs and the state institutions themselves. In the context of the study of the cultural national socio-humanitarian space, the article diagnoses and predicts the model of creating and preserving in it the dynamic equilibrium of the ethno-cultural space, in which the nation must remember the struggle for access to information and its primary sources both as an individual and the state as a whole, culture the transfer of information, which in the process of globalization is becoming a paramount commodity, an egregore, and in the post-traumatic, interrupted-compensatory cultural-information space close rehabilitation mechanisms for national identity to become a real factor in strengthening the state − and vice versa in the context of adequate laws («Law about press and other mass media», Law «About printed media (press) in Ukraine», Law «About Information», «Law about Languages», etc.) and their actual effect in creating motivational mechanisms for preserving/protecting the Ukrainian language, as one of the main identifiers of national identity, information support for its expansion as labels cultural and geostrategic areas.
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7

Hingerty, B. E., and S. Broyde. The torsion space nucleic acids molecular mechanics program DUPLEX: Surveying conformation space by potential energy minimization. Progress report. Office of Scientific and Technical Information (OSTI), November 1993. http://dx.doi.org/10.2172/10192805.

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Hingerty, B. E., and S. Broyde. The torsion space nucleic acids molecular mechanics program DUPLEX: Surveying conformation space by potential energy minimization. Progress report. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/10177868.

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Clausen, Jay, D. Moore, L. Cain, and K. Malinowski. VI preferential pathways : rule or exception. Engineer Research and Development Center (U.S.), July 2021. http://dx.doi.org/10.21079/11681/41305.

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Trichloroethylene (TCE) releases from leaks and spills next to a large government building occurred over several decades with the most recent event occurring 20 years ago. In response to a perceived conventional vapor intrusion (VI) issue a sub-slab depressurization system (SSDS) was installed 6 years ago. The SSDS is operating within design limits and has achieved building TCE vapor concentration reductions. However, subsequent periodic TCE vapor spikes based on daily HAPSITE™ measurements indicate additional source(s). Two rounds of smoke tests conducted in 2017 and 2018 involved introduction of smoke into a sanitary sewer and storm drain manholes located on effluent lines coming from the building until smoke was observed exiting system vents on the roof. Smoke testing revealed many leaks in both the storm sewer and sanitary sewer systems within the building. Sleuthing of the VI source term using a portable HAPSITE™ indicate elevated vapor TCE levels correspond with observed smoke emanation from utility lines. In some instances, smoke odors were perceived but no leak or suspect pipe was identified suggesting the odor originates from an unidentified pipe located behind or enclosed in a wall. Sleuthing activities also found building roof materials explain some of the elevated TCE levels on the 2nd floor. A relationship was found between TCE concentrations in the roof truss area, plenum space above 2nd floor offices, and breathing zone of 2nd floor offices. Installation of an external blower in the roof truss space has greatly reduced TCE levels in the plenum and office spaces. Preferential VI pathways and unexpected source terms may be overlooked mechanisms as compared to conventional VI.
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10

Vozmischeva, Tatiana G. Mathematical Aspects in Celestial Mechanics, the Lagrange and Euler Problems in the Lobachevsky Space. GIQ, 2012. http://dx.doi.org/10.7546/giq-1-2000-283-298.

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