Relevant bibliographies by topics / Asymmetrical Designs

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

Academic literature on the topic 'Asymmetrical Designs'

Author: Grafiati
Published: 8 September 2023

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Journal articles on the topic "Asymmetrical Designs"

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Agarwal, S. B., and M. N. Das. "Asymmetrical Factorial Type Switch over Designs." Calcutta Statistical Association Bulletin 35, no. 3-4 (September 1986): 149–56. http://dx.doi.org/10.1177/0008068319860304.

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In the present paper an attempt has been made to construct asymmetrical factorial type switch over designs having strip type arrangement of combination of the levels. To start with two factors at different levels have been considered. One factor has number of levels larger by one compared to the number of levels of other factor. The sequences of levels of second factor are associated with each level symbol of first factor. The situation is similar to strip plot designs in agricultural experiments. Method of construction along with analysis of these designs has been described in this paper.
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Gupta, V. K., Rajender Parsad, Lal Mohan Bhar, and Basudev Kole. "Supersaturated Designs for Asymmetrical Factorial Experiments." Journal of Statistical Theory and Practice 2, no. 1 (March 2008): 95–108. http://dx.doi.org/10.1080/15598608.2008.10411863.

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Zi, Xue-Min, Min-Qian Liu, and Run-Chu Zhang. "Asymmetrical Factorial Designs Containing Clear Effects." Metrika 65, no. 1 (April 14, 2006): 123–31. http://dx.doi.org/10.1007/s00184-006-0064-9.

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Boguslavsky, Ilya, Slava Z. Brodsky, and Gena R. Ioffe. "Regular uniform main-effect designs derivable from geometric factorial designs in 2n runs." Model Assisted Statistics and Applications 15, no. 4 (December 25, 2020): 323–33. http://dx.doi.org/10.3233/mas-200504.

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The article introduces a general method of construction of asymmetrical regular factorial main-effect designs in 2n runs. It presents a collection of optimal designs constructed by this method in 32, 64, 128, and 256 runs. The method provides exploration of design structure and construction of designs with required properties. Construction of composite designs is given as an example of design structure exploration.
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Han, Xiaoxue, Jianbin Chen, Min-Qian Liu, and Shengli Zhao. "Asymmetrical split-plot designs with clear effects." Metrika 83, no. 7 (December 4, 2019): 779–98. http://dx.doi.org/10.1007/s00184-019-00755-0.

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Akinwolemiwa, Bamidele, Chaohui Wei, and George Z. Chen. "Mechanisms and Designs of Asymmetrical Electrochemical Capacitors." Electrochimica Acta 247 (September 2017): 344–57. http://dx.doi.org/10.1016/j.electacta.2017.06.088.

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Das, A. D., and G. M. Saha. "Incomplete Block Designs for Asymmetrical Parallel Line Assays." Calcutta Statistical Association Bulletin 35, no. 1-2 (March 1986): 51–58. http://dx.doi.org/10.1177/0008068319860106.

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Methods of construction of incomplete block designs for asymmetrical parallel line assays based on C-designs with examples have been presented. Outline of analysos of these designs are given in general terms.
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El-Helbawy, Abdalla T., Essam A. Ahmed, and Abdullah H. Alharbey. "Optimal designs for asymmetrical factorial paired comparison experiments." Communications in Statistics - Simulation and Computation 23, no. 3 (January 1994): 663–81. http://dx.doi.org/10.1080/03610919408813192.

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Gupta, V. K., and A. K. Nigam. "A class of asymmetrical orthogonal resolution-IV designs." Journal of Statistical Planning and Inference 11, no. 3 (April 1985): 381–83. http://dx.doi.org/10.1016/0378-3758(85)90043-6.

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Kageyama, Sanpei. "Connectedness of PBIB designs having asymmetrical association schemes." Annals of the Institute of Statistical Mathematics 37, no. 1 (December 1985): 139–43. http://dx.doi.org/10.1007/bf02481086.

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Dissertations / Theses on the topic "Asymmetrical Designs"

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Abel, Heiko. "Frigate defense effectiveness in asymmetrical green water engagements." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://handle.dtic.mil/100.2/ADA508855.

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Thesis (M.S. in Modeling, Virtual Environments and Simulation (MOVES))--Naval Postgraduate School, September 2009.
Thesis Advisor(s): Sanchez, Paul J. ; Second Reader: Kline, Jeffrey E. "September 2009." Author(s) subject terms: Agent Based Simulation, Asymmetric Warfare, Data Farming, Design of Experiments, Evolving Design, MANA, Modeling and Simulation, Naval Swarm Defense, Robust Design, Regression Analysis, Simulation Experiments and Efficient Design Center, Taguchi Method Description based on title screen as viewed on November 03, 2009. DTIC Descriptor (s): Frigates, Theater Level Operations, Defense Systems, Experimental Design, Confined Environments, Asymmetry, Statistical Analysis, Sea Water, Small Ships, Threats, Survivability, Weapons, Theses DTIC Identifier (s): SSTR (Stability Security Transition and Reconstruction), Asymmetric Warfare, Mana Includes bibliographical references (p. 125-132). Also available in print.
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Aney, Madhav Shrihari. "Institutional design under asymmetric information." Thesis, London School of Economics and Political Science (University of London), 2009. http://etheses.lse.ac.uk/3001/.

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This thesis contributes to the literature that seeks to understand institutions. In particular the aim of this thesis is to shed light on how certain institutions arise in society as a result of collective choice, how in turn they shape behaviour of agents, and finally what their welfare properties are. These questions are tackled using the methodology of microeconomic theory where agent preferences, the state of technology, and the informational environment are taken as exogenous. In particular it is argued that the existence of different constraints on the informational environment can give rise to a rich theory of institutions that can explain why inefficient and seemingly inefficient institutions arise in a second best world. The first chapter of this thesis is concerned with the incidence of costly dispute resolution in society. The question of why agents fail to revolve disputes costlessly is tackled. This contributes to the positive theory of individual behaviour given the existence of certain institutions. The second chapter of this thesis tackles the question of why the judiciary is characterised by certain inherently costly attributes. This contributes to the normative theory of institutional choice. The last chapter deals with the positive question of how institutions are chosen. A model is presented where the political alignments in a society are endogenously generated and the effect of varying the informational environment on these alignments is analysed. These three chapters collectively contribute to the incipient theory of institutions that comprises of two elements; first where the existence of institutional structure arises as an equilibrium interplay between individual choices and technological and informational constraints, and second where conversely, individual games are shaped by the structure of existing institutions.
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Sarvghad-Moghadam, Abdoreza. "Seismic torsional response of asymmetrical multi-storey frame buildings." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/NQ42874.pdf.

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Botha, Ruan. "Design and characterization of asymmetrical porous nickel membranes / Ruan Botha." Thesis, North-West University, 2006. http://hdl.handle.net/10394/14.

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As an alternative to organic membranes, ceramic membranes are suitable for the chemical industry due to their intrinsic thermal, chemical and mechanical stability. The centrifugal dispositioning technique has the advantage that it produces membranes that are asymmetrical with a smooth inner surface. In this study, nickel powders were used in the place of regular a-alumina powders to produce an asymmetrical porous membrane, and to determine its characteristics. Sub-micron nickel powders can be produced by the hydrothermal reduction of a nickel salt with hydrazine. The particles obtained are of the correct size and size distribution and can be processed to be suitable for centrifugal dispositioning. Dispersants like polyacrylamide-codiallyldimethylammoniumchloride, polyvinylpirrolidone (PVP) and ammonium-polymetacrylate (APMA) were investigated to determine their ability to stabilize Ni powder in an aqueous dispersion. Nickel powder manufactured by the hydrothermal reduction of a nickel salt with hydrazine were moulded into a tubular membrane by means or the centrifugal dispitioning technique. A stable dispersion was made with PAAco with little agglomeration or segregation. The membranes were successfully removed from the stainless steel moulds without breakage of the membrane. The greencasted membranes obtained were sintered without membrane failure, where after they were subjected to numerous tests to determine their characteristics. SEM photographs were taken from the Inner surface and cross-sections to determine the morphology of the membranes. It was demonstrated that a change in the crystal phase occurred at 1200"C, changing the morphology as well as the membrane characteristics. The nickel membrane shrinkage during the sintering experiments was found to increase linearly. It was shown with mercury intrusion that the bimodal pore size distribution of the membranes decreased with increasing sintering temperature, while larger pores were exchanged for smatter pores. It was found that water permeation varied from 5 to 69 L.m-2.h-1.bar-1, depending on the sintering temperature (950°C to 1250°C) of the membrane. The water permeation decreased linearly with increasing sintering temperature.
Thesis (M.Sc. (Pharmaceutical Chemistry))--North-West University, Potchefstroom Campus, 2007.
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Castillo, Rolando. "Seismic design of asymmetric ductile systems." Thesis, University of Canterbury. Department of Civil Engineering, 2004. http://hdl.handle.net/10092/5055.

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The research promotes a better understanding of the response of torsionally unrestrained and restrained ductile systems by examining the mechanism developed during the torsional response of systems as they are affected by the dynamic actions of the translational and rotational mass. A simple but effective design strategy for the seismic design of torsionally asymmetric systems is suggested based on the estimate of the system displacement ductility capacity and the distribution of the estimated system strength to its elements. The strength eccentricity is considered the main parameter to influence the ductile response of asymmetric systems. The possible success of the design strategy to limit displacement demands of the elements to less than their displacement ductility capacity, for zero and increasing strength eccentricities, was examined against the effects of key parameters expected to influence response. These parameters are: strength eccentricity and the associated increase of system strength, mass eccentricity, ratio of radii of gyration of strength and mass, reduced system displacement ductility capacity, transverse elements and their degree of torsional restraint, the ratio of element nominal yield displacement, i.e., α=Δye2/Δye1. and associated stiffness eccentricity, uncoupled translational period, consideration of different earthquake records and their direction of application. Elements are modelled with a realistic relationship between element strength, stiffness and nominal yield displacement. The stiffness is strength dependant and the nominal yield displacement is a geometric and material property independent of strength. The centre of strength and stiffness are, therefore, not independent parameters. This research focuses on analytical studies of torsionally unrestrained and restrained single-mass asymmetric systems. Single, two and multi-element systems were examined. An experimental programme was also undertaken on single-mass models to verify some of the analytical findings. The findings suggest that the suggested design strategy is successful in limiting the displacement demands on elements to less than their displacement capacity for zero and increasing strength eccentricities. No differentiation is required between systems having or not having mass eccentricity. The proposed design strategy is slightly different for torsionally unrestrained and restrained systems. It promises to be straightforward, rational and in terms of design efforts most user friendly.
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James, Samantha N. "Design and Development of Asymmetric Organocatalysts." Thesis, Griffith University, 2014. http://hdl.handle.net/10072/367034.

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This thesis describes the design and synthesis of a new class of hydrogen bonding organocatalysts. After various synthetic strategies were investigated, a convenient two-step process, involving an amide coupling followed by borane reduction of the resulting N-acylsulfonamide, resulted in the formation of the targeted racemic 1,5-bis-sulfonamides. This synthesis also provided access to a second series of potential organocatalysts, the N-acylsulfonamides. The catalytic ability of both libraries of racemic compounds was tested in Friedel-Crafts type reactions of N-methylindole with ethyl glyoxylate and p-nitrostyrene. Following on from this work, a small number of N-acylsulfonamides were synthesised in enantiomerically enriched form, after resolution of the starting material trans-1,3-cyclohexanedicarboxylic acid using strychnine. Testing of the enantiopure N-acylsulfonamides showed that they were able to promote the Friedel-Crafts type reaction between N-methylindole and P-nitrostyrene, in good yields but poor enantioselectivities. A second group of catalysts were synthesised based on the TAD DOL class of compounds. Attempts to form his-sulfonamide TADDOL derivatives were unsuccessful, with only mono-sulfonamides being isolated, possibly due to a stabilising intramolecular hydrogen bond present in the mono-sulfonamides. A p-tolyl N-acylsulfonamide TADDOL derivative was also synthesised. The mono sulfonamide and N-acylsulfonamide TADDOL derivatives did not effectively catalyse the Friedel-Crafts type reaction between N-methylindole and P­ nitrostyrene. The TADDOL derivatives catalysed the model reaction between N­ methylindole and ethyl glyoxylate with low to moderate efficiency.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Biomolecular and Physical Sciences
Science, Environment, Engineering and Technology
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Bremberg, Ulf. "Asymmetric catalysis : ligand design and microwave acceleration." Doctoral thesis, KTH, Chemistry, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2962.

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This thesis deals partly with the design and synthesis ofligands for use in asymmetric catalysis, and partly with theapplication of microwave heating on metal-based asymmetriccatalytic reactions.

Enantiomerically pure pyridyl alcohols and bipyridylalcohols were synthesized from the chiral pool for future usein asymmetric catalysis. Lithiated pyridines were reacted withseveral chiral electrophiles, yielding diastereomeric mixturesthat could be separated without the use of resolutiontechniques.

New pyridino- and quinolinooxazolines were synthesized andtested in palladium-catalyzed asymmetric allylation using1,3-diphenyl-2-propenyl acetate and dimethyl malonate. Theconformational preferences of the ligands in palladiumcomplexes were studied with crystallography, 2D-NMR techniquesand DFT calculations. Conclusions about how the chirality wastransferred from the ligand to the substrate could be drawnfrom the conformational analysis.

The effect of heating Pd- and Mo-catalyzed asymmetricallylic substitution reactions was investigated with oil bathheating and microwave irradiation. With a few exceptions,ligands with high room temperature selectivity were shown toretain their selectivity on heating. Reaction rates, catalyststability and product selectivities of microwave-heatedreactions were compared with those of reactions performed inoil bath.

Palladium-catalyzed asymmetric allylation was studied withseveral ligand types, allylic substrates and nucleophiles. Someof the experimental procedures had to be adapted to microwaveheating conditions.

The procedure for asymmetric allylation catalyzed bybispyridylamide molybdenum complexes was developed into aone-pot microwave-mediated reaction. With microwaves, Mo(CO)6could be used as an easily-handled metal sourceand inert conditions could be omitted. Derivatives of thebispyridylamide ligandswere synthesized and tested withmolybdenum as catalysts to investigate the effects ofsubstituents on the pyridine ring.

Keywords: ligand, asymmetric catalysis, pyridylalcohols, oxazolines, conformational study, Pd-allyl, fastchemistry, microwave chemistry, Mo-allyl, bispyridylamides.

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Hallman, Kristina. "Asymmetric Catalysis : Ligand Design and Conformational Studies." Doctoral thesis, KTH, Chemistry, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3275.

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This thesis deals with the design of ligands for efficientasymmetric catalysis and studies of the conformation of theligands in the catalytically active complexes. All ligandsdeveloped contain chiral oxazoline heterocycles.

The conformations of hydroxy- and methoxy-substitutedpyridinooxazolines and bis(oxazolines) during Pd-catalysedallylic alkylations were investigated using crystallography,2D-NMR techniques and DFT calculations. A stabilising OH-Pdinteraction was discovered which might explain the differencein reactivity between the hydroxy- and methoxy-containingligands. The conformational change in the ligands due to thisinteraction may explain the different selectivities observed inthe catalytic reaction.

Polymer-bound pyridinooxazolines and bis(oxazolines) weresynthesised and employed in Pd-catalysed allylic alkylationswith results similar to those of monomeric analogues;enantioselectivities up to 95% were obtained. One polymer-boundligand could be re-used several times after removal of Pd(0).The polymer-bound bis(oxazoline) was also used in Zn-catalysedDiels-Alder reactions, but the heterogenised catalyst gavelower selectivities than a monomeric analogue.

A series of chiral dendron-containing pyridinooxazolines andbis(oxazolines) were synthesised and evaluated in Pd-catalysedallylic alkylations. The dendrons did not seem to have anyinfluence on the selectivity and little influence on the yieldwhen introduced in the pyridinooxazoline ligands. In thebis(oxazoline) series lower generation dendrimers had a postiveon the selectivity, but the selectivity and the activitydecreased with increasing generation.

Crown ether-containing ligands were investigated inpalladium-catalysed alkylations. No evidence of a possibleinteraction between the metal in the crown ether and thenucleophile was discovered.

A new type of catalyst, an oxazoline-containing palladacyclewas found to be very active in oxidations of secondary alcoholsto the corresponding aldehydes or ketones. The reactions wereperformed with air as the re-oxidant. Therefore, this is anenviromentally friendly oxidation method.

Keywords:asymmetric catalysis, chiral ligand,oxazolines, conformational study, allylic substitution,polymer-bound ligands, dendritic ligands, crown ether,oxidations, palladacycle.

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Tong, Ka Pui. "Design of new ligands for asymmetric catalysis /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202003%20TONG.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2003.
Includes bibliographical references (leaves 107-111). Also available in electronic version. Access restricted to campus users.
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Nixon, Tracy Dawn. "Catalyst design for the asymmetric phospho-aldol reaction." Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424504.

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Books on the topic "Asymmetrical Designs"

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Chakravorti, Bhaskar. Asymmetric information, "interim" equilibrium and mechanism design. [Urbana, Ill.]: College of Commerce and Business Administration, University of Illinois at Urbana-Champaign, 1988.

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Lai, A. Y. H. Design of symmetrical and asymmetrical 10-dB microstrip directional couplers for 1GHz. Manchester: UMIST, 1993.

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Granander, Johan. Asymmetric synthesis mediated by chiral lithium amides: Design, structure and selectivity. Göteborg: Göteborg University, Faculty of Science, 2005.

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Rackham, J. W. Design of asymmetric slimflor beams with precast concrete slabs. Ascot: Steel Construction Institute, 2006.

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United States. Dept. of Energy., Stanford Linear Accelerator Center, Lawrence Berkeley Laboratory, Lawrence Radiation Laboratory, California Institute of Technology, and University of California Berkeley, eds. An asymmetric B factory based on PEP: Conceptual design report. [Washington, D.C.]: U.S. G.P.O., 1991.

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Hou, Xu. Bio-inspired Asymmetric Design and Building of Biomimetic Smart Single Nanochannels. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38050-1.

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Hou, Xu. Bio-inspired Asymmetric Design and Building of Biomimetic Smart Single Nanochannels. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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Millar, Monte J. Design and synthesis of new monoterpenoid derived ligands for asymmetric catalysis. St. Catharines, Ont: Brock University, Dept. of Chemistry, 1999.

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The Manual for Creating Hair Designs: A Guide for the Professional Hair Designer Using Symmetrical And Asymmetrical Lines And Pivot Lines. Cork Hill Press, 2005.

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Asymmetrical Quilts. Leisure Arts, 2012.

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Book chapters on the topic "Asymmetrical Designs"

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Queiroz, Nuno C., Fernando P. Lima, Pedro A. Ribeiro, Sílvia G. Pereira, and António M. Santos. "Using asymmetrical designs for environmental impact assessment of unplanned disturbances." In Marine Biodiversity, 223–27. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4697-9_18.

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Schlosser, Pierre. "EMU’s Asymmetrical Institutional Design." In Europe's New Fiscal Union, 21–43. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-98636-4_2.

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Stephenson, G. R., and J. P. Genet. "Design of asymmetric synthesis." In Advanced Asymmetric Synthesis, 1–8. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-007-0797-9_1.

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Stephenson, G. R. "Worked examples in asymmetric synthesis design." In Advanced Asymmetric Synthesis, 392–405. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-007-0797-9_18.

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Tan, Evrim. "Conclusion: Toward an Asymmetrical Decentralization Design." In Decentralization and Governance Capacity, 193–228. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-02047-7_6.

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Nielsen, Jørn Flohr, and Henrik Bendixen Sørensen. "Organizing for Asymmetric Collaboration." In Information and Organization Design Series, 83–103. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-77776-4_5.

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Zhang, Yu. "Three-Bay Square Hall with Asymmetrical Design." In East Asian Architecture in Globalization, 156–65. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75937-7_13.

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Sparr, Christof, Lucie E. Zimmer, and Ryan Gilmour. "Exploiting Fluorine Conformational Effects in Organocatalyst Design: The Fluorine-Iminium IonGauche Effect." In Asymmetric Synthesis II, 117–24. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527652235.ch16.

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Liski, Erkki P., Nripes K. Mandal, Kirti R. Shah, and Bikas K. Sinha. "Optimal Regression Designs in Asymmetric Domains." In Topics in Optimal Design, 37–70. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-1-4613-0049-6_3.

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Bonfante, Delso, and Fernando Bonfante. "New Designs of Asymmetric Corneal Rings." In Keratoconus, 587–612. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85361-7_51.

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Conference papers on the topic "Asymmetrical Designs"

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Giard, Edouard, Rachid Taalat, Marie Delmas, Jean-Baptiste Rodriguez, Philippe Christol, Julien Jaeck, and Isabelle Ribet-Mohamed. "Comparison of the electro-optical performances of MWIR InAs/GaSb superlattice pin photodiode and FPA with asymmetrical designs." In SPIE Defense + Security, edited by Bjørn F. Andresen, Gabor F. Fulop, Charles M. Hanson, and Paul R. Norton. SPIE, 2014. http://dx.doi.org/10.1117/12.2050426.

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Panning, Lars, Karl Popp, Walter Sextro, Florian Go¨tting, Andreas Kayser, and Ivo Wolter. "Asymmetrical Underplatform Dampers in Gas Turbine Bladings: Theory and Application." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53316.

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During operation, the rotating blades of a gas turbine are subjected to centrifugal forces as well as fluctuating gas forces, resulting in blade vibrations. In addition to material damping, aerodynamical and blade root damping, underplatform dampers are widely used to increase the amount of damping and to decrease blade vibration amplitudes. The friction forces generated by the relative displacements between the underplatform damper and the blade platforms provide a significant amount of energy dissipation. In practice, a number of different underplatform damper designs are applied. Basically, these are wedge dampers with flat contact areas, cylindrical dampers with curved surfaces or asymmetrical dampers with both flat contact surfaces on one side and curved contact surfaces on the other. The latter damper type combines the advantages of both the wedge and the cylindrical damper by preventing the damper from pure rolling on the one hand as it has been observed for cylindrical dampers and on the other hand, avoiding a diverged plane area contact in case of a wedge damper, causing a damper lift-off. This paper will focus on the investigation of cylindrical and asymmetrical underplatform dampers. A comparison between measurements of rotating assemblies in Siemens PG gas turbines (V84.2, V64.3A and V94.3A(2)) under test and real operating conditions with cylindrical and asymmetrical underplatform dampers and the predictions of the developed theoretical model are presented. Special attention is paid to the frequency shift due to the application of an underplatform damper, since in particular for stationary gas turbines, in addition to the amplitude reduction, the accurate prediction of the resonance frequency is of major interest.
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Howell, Eric B., Glenn Klute, and Santosh Devasia. "Passive and Active Shock Absorbing Prostheses for Lower Limb Amputees." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81286.

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Excessive transient forces arising from foot-ground during gait can be related to increased incidence of degenerative joint disease, residual limb blisters and ulceration, muscle tears, stress fractures, and chronic low back pain. For the lower extremity amputee with only residual capacity to attenuate transient forces, effective protective interventions are an essential element of the prosthetic prescription. To facilitate understanding of the components and design variables that may influence shock absorption, a lumped parameter model simulating the movement of the human body, prosthetic components, and footwear for the first 150 ms following initial foot-ground contact is developed in conjunction with a cost function relating dose, magnitude and frequency with adverse health effects. The prosthetic foot was found to have the greatest potential for attenuating impact forces compared to the pylon and socket liner. Using the model to explore the design space, optimal passive designs were able to reduce the adverse-health-effects, cost function by 20% from those of seven different, commercially available, prosthetic feet. Optimal passive designs at the pylon and socket liner produced smaller reductions in cost while at the same time creating undesirably large displacements that could potentially lead to asymmetrical gait and secondary disabilities. While optimal passive designs were able to provide a significant cost reduction over existing prosthetic feet, further exploration of the design space reveals active shock absorbing feet have the potential to reduce the adverse health effects cost function by 57%.
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Dong, Shuting, Feng Lu, Zhe Wu, and Chun Yuan. "DFVSR: Directional Frequency Video Super-Resolution via Asymmetric and Enhancement Alignment Network." In Thirty-Second International Joint Conference on Artificial Intelligence {IJCAI-23}. California: International Joint Conferences on Artificial Intelligence Organization, 2023. http://dx.doi.org/10.24963/ijcai.2023/76.

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Recently, techniques utilizing frequency-based methods have gained significant attention, as they exhibit exceptional restoration capabilities for detail and structure in video super-resolution tasks. However, most of these frequency-based methods mainly have three major limitations: 1) insufficient exploration of object motion information, 2) inadequate enhancement for high-fidelity regions, and 3) loss of spatial information during convolution. In this paper, we propose a novel network, Directional Frequency Video Super-Resolution (DFVSR), to address these limitations. Specifically, we reconsider object motion from a new perspective and propose Directional Frequency Representation (DFR), which not only borrows the property of frequency representation of detail and structure information but also contains the direction information of the object motion that is extremely significant in videos. Based on this representation, we propose a Directional Frequency-Enhanced Alignment (DFEA) to use double enhancements of task-related information for ensuring the retention of high-fidelity frequency regions to generate the high-quality alignment feature. Furthermore, we design a novel Asymmetrical U-shaped network architecture to progressively fuse these alignment features and output the final output. This architecture enables the intercommunication of the same level of resolution in the encoder and decoder to achieve the supplement of spatial information. Powered by the above designs, our method achieves superior performance over state-of-the-art models on both quantitative and qualitative evaluations.
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Fontaine, Marie. "Active Polarization Converter in AlGaAs." In Nonlinear Guided Waves and Their Applications. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/nlgw.1998.nthe.17.

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Asymmetric AlGaAs waveguides working in a cross-phase modulation regime and operated at photon energies below the band gap could be promising for the design of active TE-TM polarization converters. Crucially important for devices with asymmetrical cross-section is the orientation of the optical axes to maximize the TE-TM conversion. For [100] oriented AlGaAs angle-facet rib-waveguides, it is seen that the rotation of the polarization state is optimized if one optical axis of the device is aligned closed to the 45° polarization-maintaining axis in the bulk medium. The design of such a waveguide is illustrated at Fig. 1.
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Lyu, Zekui, and Qingsong Xu. "Design, Modeling, and Optimization of a Novel Asymmetrical Piezoelectrically Actuated Microgripper." In ASME 2021 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/detc2021-68787.

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Abstract Microgripper, as the end-effector of a micromanipulation robot, has been widely used in semiconductors, biomedicine, optical engineering, etc. The stack piezoelectric ceramic actuated microgripper has the advantages of fast response speed, high motion resolution, and good control performance. Traditional symmetrical microgripper has defects such as lack of positioning reference and dense modal of resonance. Therefore, it is necessary to develop an asymmetrical clamp with a large clamping stroke and good dynamic characteristics. This paper introduces the design, modeling, optimization, and simulation of a new asymmetric microgripper. The designed asymmetric gripper has the advantages of large-displacement magnification and high natural frequency. The gripper’s movable side is comprised of three-level compliant amplification mechanisms including bridge mechanism, Scott-Russell mechanism, and parallelogram mechanism. The linear relationship between the input displacement and the output displacement is obtained through motion modeling. The multi-objective genetic algorithm optimizes the major parameters of the structure which affect the clamping stroke. Finite element analysis is conducted to verify the clamping stroke, clamping force, and resonance frequency of the gripper. The simulation results show that the proposed microgripper has good working performance with a clamping stroke of 156.75 μm and a natural frequency of 952.91 Hz, which is promising for practical application.
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Dubrovin, A., A. Zholents, and A. Garren. "Monochromatic design for the Apiary B-factory." In Beam dynamics issues of high luminosity asymmetric collider rings. AIP, 1990. http://dx.doi.org/10.1063/1.39782.

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Lan, Chuanjie, Xinqian Zheng, and Hideaki Tamaki. "Non-Axisymmetric Flow Structure in Vaneless Diffuser of Centrifugal Compressor for Turbochargers." In ASME 2012 Gas Turbine India Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gtindia2012-9676.

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Turbocharger technology is widely used in internal combustion engines. With the downsizing of internal combustion engines and the introduction of strict emission regulations, there is urgent demand for turbochargers featuring centrifugal compressors with a wide flow range. The flow in a centrifugal compressor of a turbocharger is non-axisymmetric due to the inherent asymmetry of the discharge volute. The asymmetric flow field inside the diffuser has great influence on the performance of centrifugal compressor. In order to develop a flow control method that facilitates a wider flow range of turbocharger compressors, further understanding of the asymmetric flow structure is very important. The main subject of this study is to reveal the asymmetrical characteristics of the flow field in the vaneless diffuser of a centrifugal compressor followed by a volute. Oil flow visualizations and numerical simulations were used. The results of the numerical simulations are consistent with that of the oil flow visualizations near choke and at designed flow rate. The results show that a “dual-zone mode” asymmetric flow structure exists near the shroud of the vaneless diffuser at near choke condition. A bifurcation point at the volute tongue that divides the flow and creates two distinct flow patterns was found. The asymmetry of the flow structure near the hub was much less significant than that near the shroud. At the design flow rate, asymmetric flow patterns are found neither near shroud nor near hub. At near surge condition, the pattern of the oil flow traces near the shroud is very different from those near choke.
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Karásek, Vítězslav, Oto Brzobohatý, and Pavel Zemánek. "Optical binding in the asymmetrical configurations." In Bio-Optics: Design and Application. Washington, D.C.: OSA, 2011. http://dx.doi.org/10.1364/boda.2011.jtua32.

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Jafari, A. A., A. K. Tieu, and A. Basu. "Asymmetrical Rolling and Self Excited Vibrations in a Hot Roughing Mill." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0193.

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Abstract This paper discusses the simulation of self excited torsional vibration of rolling mill drives and vertical vibration of a Horizontal Mill taking into account asymmetrical rolling. The influence of the mass, rigidity and damping of the hot steel slab have been considered in the simulation of asymmetrical self excited vibrations.
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Reports on the topic "Asymmetrical Designs"

1

Coughlan, Peter J., and William Gates. Innovations in Defense Acquisition: Asymmetric Information and Incentive Contract Design. Fort Belvoir, VA: Defense Technical Information Center, December 2009. http://dx.doi.org/10.21236/ada529452.

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Doughty, Jeffrey. Symmetric Near-Field Probe Design and Comparison to Asymmetric Probes. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.390.

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Zisman, M. PEP-II Asymmetric B Factory: Designs Update and R& D Results. Office of Scientific and Technical Information (OSTI), July 2004. http://dx.doi.org/10.2172/833127.

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Coughlan, Peter, William Gates, and Jeremy Arkes. Innovations in Defense Acquisition: Asymmetric Information, Mechanism Design and Prediction Markets. Fort Belvoir, VA: Defense Technical Information Center, February 2011. http://dx.doi.org/10.21236/ada563409.

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Arce, Eliécer, and Edgar A. Robles. Fiscal Rules and the Behavior of Public Investment in Costa Rica and Panama: Towards Growth-Friendly Fiscal Policy? Inter-American Development Bank, March 2021. http://dx.doi.org/10.18235/0003071.

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This paper aims to provide evidence on the effects of fiscal rules on public investment, fiscal results and growth in Costa Rica and Panama. First, we find that the budget formulation process and the political economy behind the adoption and compliance of fiscal rules explain that Panama has a bias to create and sequentially pile up rules, while Costa Rica has a tendency not to comply with them. Second, a retrospective analysis of the 2018 fiscal rules in both nations finds asymmetric effects on the fiscal results. In Panama it is difficult to separate the effect of fiscal rule designs on public investment; and, in Costa Rica, the application of the fiscal rule will decrease public investment, if the debt to GDP ratio exceeds 60 percent and current expenditure crowds out capital expenditure. Two lessons emerge. First, an effective fiscal rule compliance requires time consistent institutions, solid monitoring, enforcement schemes and improving the quality of public financial management systems. Second, it is necessary to review the design of fiscal rules in both countries to ensure they are investment and growth friendly.
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Leroux, Marie-Louise, Pierre Pestieau, and Gregory Ponthiere. The optimal design of assisted reproductive technologies policies. CIRANO, June 2022. http://dx.doi.org/10.54932/ezmm9028.

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This paper studies the optimal design of assisted reproductive technologies (ART) policies in an economy where individuals differ in their reproductive capacity (or fecundity) and in their wage. We find that the optimal ART policy varies with the postulated social welfare criterion. Utilitarianism redistributes only between individuals with unequal fecundity and wages but not between parents and childless individuals. To the opposite, ex post egalitarianism (which gives absolute priority to the worst-off in realized terms) redistributes from individuals with children toward those without children, and from individuals with high fecundity toward those with low fecundity, so as to compensate for both the monetary cost of ART and for the disutility from involuntary childlessness resulting from unsuccessful ART investments. Under asymmetric information and in order to solve for the incentive problem, utilitarianism recommends also to either tax or subsidize ART investments of low-fecundity-low productivity individuals depending on the degree of complementarity between fecundity and ART in the fertility technology. On the opposite, ex post egalitarianism always recommends marginal taxation.
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Bornholdt, S., and D. Graudenz. General asymmetric neutral networks and structure design by genetic algorithms: A learning rule for temporal patterns. Office of Scientific and Technical Information (OSTI), July 1993. http://dx.doi.org/10.2172/10186812.

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Barletta, W. Design of the Vacuum System for the High Energy Ring of an Asymmetric B-Factory Based on PEP. Office of Scientific and Technical Information (OSTI), April 2005. http://dx.doi.org/10.2172/839842.

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Martin, Kathi, Nick Jushchyshyn, and Claire King. Christian Lacroix Evening gown c.1990. Drexel Digital Museum, 2017. http://dx.doi.org/10.17918/wq7d-mc48.

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The URL links to a website page in the Drexel Digital Museum (DDM) fashion image archive containing a 3D interactive panorama of an evening gown by French fashion designer Christian Lacroix with related text. This evening gown by Christian Lacroix is from his Fall 1990 collection. It is constructed from silk plain weave, printed with an abstract motif in the bright, deep colors of the local costumes of Lacroix's native Arles, France; and embellished with diamanté and insets of handkerchief edged silk chiffon. Ruffles of pleated silk organza in a neutral bird feather print and also finished with a handkerchief edge, accentuate the asymmetrical draping of the gown. Ruching, controlled by internal drawstrings and ties, creates volume and a slight pouf, a nod to 'le pouf' silhouette Lacroix popularized in his collection for Patou in 1986. Decorative boning on the front of the bodice reflects Lacroix's early education as a costume historian and his sartorial reinterpretation of historic corsets. It is from the private collection of Mari Shaw. The panorama is an HTML5 formatted version of an ultra-high resolution ObjectVR created from stitched tiles captured with GigaPan technology. It is representative the ongoing research of the DDM, an international, interdisciplinary group of researchers focused on production, conservation and dissemination of new media for exhibition of historic fashion.
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Allende López, Marcos, Diego López, Sergio Cerón, Antonio Leal, Adrián Pareja, Marcelo Da Silva, Alejandro Pardo, et al. Quantum-Resistance in Blockchain Networks. Inter-American Development Bank, June 2021. http://dx.doi.org/10.18235/0003313.

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This paper describes the work carried out by the Inter-American Development Bank, the IDB Lab, LACChain, Cambridge Quantum Computing (CQC), and Tecnológico de Monterrey to identify and eliminate quantum threats in blockchain networks. The advent of quantum computing threatens internet protocols and blockchain networks because they utilize non-quantum resistant cryptographic algorithms. When quantum computers become robust enough to run Shor's algorithm on a large scale, the most used asymmetric algorithms, utilized for digital signatures and message encryption, such as RSA, (EC)DSA, and (EC)DH, will be no longer secure. Quantum computers will be able to break them within a short period of time. Similarly, Grover's algorithm concedes a quadratic advantage for mining blocks in certain consensus protocols such as proof of work. Today, there are hundreds of billions of dollars denominated in cryptocurrencies that rely on blockchain ledgers as well as the thousands of blockchain-based applications storing value in blockchain networks. Cryptocurrencies and blockchain-based applications require solutions that guarantee quantum resistance in order to preserve the integrity of data and assets in their public and immutable ledgers. We have designed and developed a layer-two solution to secure the exchange of information between blockchain nodes over the internet and introduced a second signature in transactions using post-quantum keys. Our versatile solution can be applied to any blockchain network. In our implementation, quantum entropy was provided via the IronBridge Platform from CQC and we used LACChain Besu as the blockchain network.
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