Relevant bibliographies by topics / Staircase model

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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 'Staircase model'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Staircase model"

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Ramalingam, Balakrishnan, Rajesh Elara Mohan, Selvasundari Balakrishnan, et al. "sTetro-Deep Learning Powered Staircase Cleaning and Maintenance Reconfigurable Robot." Sensors 21, no. 18 (2021): 6279. http://dx.doi.org/10.3390/s21186279.

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Staircase cleaning is a crucial and time-consuming task for maintenance of multistory apartments and commercial buildings. There are many commercially available autonomous cleaning robots in the market for building maintenance, but few of them are designed for staircase cleaning. A key challenge for automating staircase cleaning robots involves the design of Environmental Perception Systems (EPS), which assist the robot in determining and navigating staircases. This system also recognizes obstacles and debris for safe navigation and efficient cleaning while climbing the staircase. This work proposes an operational framework leveraging the vision based EPS for the modular re-configurable maintenance robot, called sTetro. The proposed system uses an SSD MobileNet real-time object detection model to recognize staircases, obstacles and debris. Furthermore, the model filters out false detection of staircases by fusion of depth information through the use of a MobileNet and SVM. The system uses a contour detection algorithm to localize the first step of the staircase and depth clustering scheme for obstacle and debris localization. The framework has been deployed on the sTetro robot using the Jetson Nano hardware from NVIDIA and tested with multistory staircases. The experimental results show that the entire framework takes an average of 310 ms to run and achieves an accuracy of 94.32% for staircase recognition tasks and 93.81% accuracy for obstacle and debris detection tasks during real operation of the robot.
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Hu, Min, and Wei Cai. "Simulation and Optimization for the Staircase Evacuation of a Cruise Ship Based on a Multigrid Model." Mathematical Problems in Engineering 2021 (May 15, 2021): 1–18. http://dx.doi.org/10.1155/2021/9961536.

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A cruise ship is a large public place, and it is very important to ensure the safety of passengers during the evacuation process in case of an emergency. This paper proposes a method to improve evacuation efficiency on cruise ships by controlling passengers’ density. According to the construction of the staircase, the space of the staircase is divided into the step and landing areas. On the basis of considering the influence of passengers’ view field and moving characteristics of passengers, the moving rules of passengers in two areas are established. Taking staircases of the cruise ship as the evacuation scenario, the evacuation process is simulated by using the established model. From simulation results, it is found that numbers of evacuated passengers between staircases are very unbalanced and too many passengers gather in one staircase, which lead to serious congestion. By controlling passengers’ density in stairs areas, the minimum evacuation time is the optimization objective and the optimization model is established by using the quantum-inspired evolutionary algorithm and genetic algorithm. The optimization results show that the evacuation time is significantly shortened when the passenger’s density on the staircase is kept within an appropriate range, which proves that the evacuation efficiency can be effectively improved by controlling the passengers’ density.
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Chinowsky, Paul S. "Staircase Model for New Practice Implementation." Journal of Management in Engineering 24, no. 3 (2008): 187–95. http://dx.doi.org/10.1061/(asce)0742-597x(2008)24:3(187).

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Kiselev, M. N., D. N. Aristov, and K. Kikoin. "Spin gap in a spiral staircase model." Physica B: Condensed Matter 359-361 (April 2005): 1406–8. http://dx.doi.org/10.1016/j.physb.2005.01.441.

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Hawton, M. H., and W. J. Keeler. "Devil’s-staircase model of a heterogeneous dielectric." Physical Review B 40, no. 1 (1989): 753–55. http://dx.doi.org/10.1103/physrevb.40.753.

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Allred, S. R., L. J. Lohnas, and D. H. Brainard. "Bayesian model of the staircase Gelb effect." Journal of Vision 8, no. 6 (2010): 283. http://dx.doi.org/10.1167/8.6.283.

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Mazzoni, Michele, Octavio Pomponio, Olalla A. Castro-Alvaredo, and Francesco Ravanini. "The staircase model: massless flows and hydrodynamics." Journal of Physics A: Mathematical and Theoretical 54, no. 40 (2021): 404005. http://dx.doi.org/10.1088/1751-8121/ac2141.

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HITCZENKO, PAWEŁ, and SVANTE JANSON. "Weighted Random Staircase Tableaux." Combinatorics, Probability and Computing 23, no. 6 (2014): 1114–47. http://dx.doi.org/10.1017/s0963548314000327.

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This paper concerns a relatively new combinatorial structure called staircase tableaux. They were introduced in the context of the asymmetric exclusion process and Askey–Wilson polynomials; however, their purely combinatorial properties have gained considerable interest in the past few years.In this paper we further study combinatorial properties of staircase tableaux. We consider a general model of random staircase tableaux in which symbols (Greek letters) that appear in staircase tableaux may have arbitrary positive weights. (We consider only the case with the parametersu=q= 1.) Under this general model we derive a number of results. Some of our results concern the limiting laws for the number of appearances of symbols in a random staircase tableaux. They generalize and subsume earlier results that were obtained for specific values of the weights.One advantage of our generality is that we may let the weights approach extreme values of zero or infinity, which covers further special cases appearing earlier in the literature. Furthermore, our generality allows us to analyse the structure of random staircase tableaux, and we obtain several results in this direction.One of the tools we use is the generating functions of the parameters of interest. This leads us to a two-parameter family of polynomials, generalizing the classical Eulerian polynomials.We also briefly discuss the relation of staircase tableaux to the asymmetric exclusion process, to other recently introduced types of tableaux, and to an urn model studied by a number of researchers, including Philippe Flajolet.
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Liu, Kui, Jieqing Tan, and Benyue Su. "An Adaptive Image Denoising Model Based on Tikhonov and TV Regularizations." Advances in Multimedia 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/934834.

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To avoid the staircase artifacts, an adaptive image denoising model is proposed by the weighted combination of Tikhonov regularization and total variation regularization. In our model, Tikhonov regularization and total variation regularization can be adaptively selected based on the gradient information of the image. When the pixels belong to the smooth regions, Tikhonov regularization is adopted, which can eliminate the staircase artifacts. When the pixels locate at the edges, total variation regularization is selected, which can preserve the edges. We employ the split Bregman method to solve our model. Experimental results demonstrate that our model can obtain better performance than those of other models.
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Dunkerton, Timothy J., and Richard K. Scott. "A Barotropic Model of the Angular Momentum–Conserving Potential Vorticity Staircase in Spherical Geometry." Journal of the Atmospheric Sciences 65, no. 4 (2008): 1105–36. http://dx.doi.org/10.1175/2007jas2223.1.

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Abstract An idealized analytical model of the barotropic potential vorticity (PV) staircase is constructed, constrained by global conservation of absolute angular momentum, perfect homogenization of PV in mixing zones between (prograde) westerly jets, and the requirement of barotropic stability. An imposed functional relationship is also assumed between jet speed and latitudinal separation using a multiple of the “dynamical Rossby wave” Rhines scale inferred from the strength of westerly jets. The relative simplicity of the barotropic system provides a simple relation between absolute angular momentum and PV (or absolute vorticity). A family of solutions comprising an arbitrary number of jets is constructed and is used to illustrate the restriction of jet spacing and strength imposed by the constraints of global conservation of angular momentum and barotropic stability. Asymptotic analysis of the theoretical solution indicates a limiting ratio of jet spacing to the dynamical Rhines scale equal to the square root of 6, meaning that westerly jets are spaced farther apart than predicted by the dynamical Rhines scale. It is inferred that an alternative “geometrical” Rhines scale for jet spacing can be obtained from conservation of absolute angular momentum on the sphere if the strength of zonal jets is known from other considerations. Numerical simulations of the full (nonaxisymmetric) equations reveal a pattern of zonal jet evolution that is consistent with our construction of ideal PV staircases in spherical geometry (which can be considered as limiting cases), as well as with the asymptotic analysis of a geometrical Rhines scale. The evolution of the PV staircase originating from an upscale cascade of energy in the barotropic model is therefore seen to depend on conservation of energy (for the strength of jets) and conservation of absolute angular momentum (for the spacing and number of jets). Further analysis of the numerical results confirms a “Taylor identity” relating the flux of eddy potential vorticity to mean-flow acceleration. Eddy fluxes are responsible for the occasional transitions between mode number as well as for maintaining the sharp westerly jets against small-scale dissipation. Suggestions are made for extending the theoretical model to PV staircases that are asymmetric between hemispheres or with latitudinal variation of amplitude, as modeled in the shallow-water system.
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Dissertations / Theses on the topic "Staircase model"

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Bennett, Gena R. "A staircase model for teaching grammar for EAP writing in the IEP : freshman composition and the noun phrase." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/2972/.

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The interface of corpus linguistics and second language writing has led to extensive corpus-based research focusing on a description of academic writing. The overwhelming majority of this research, however, has focused on scholarly writing, which may not be a valid model for novice writing. This thesis proposes the teaching of second language writing should be informed by a staircase model of writing progression which aims instruction at the level of student writing. For English for academic purposes writers in intensive English programs, this target is first year undergraduate writing, specifically freshman composition as it is taught in North American higher education contexts. This study specifically compares the frequency of the noun phrase in freshman composition writing and scholarly writing with two main aims: to provide empirical evidence of the differences between the two levels of writing and to contribute to a description of freshman composition writing. The findings from this comparison clearly demonstrate that noun phrases in both levels of writing employ a discernible pattern, and there are distinct differences between those patterns. A critical need form pedagogical materials to focus more on phrasal structures in general, but especially nounphrases, is evident.
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Larsson, Sofia, and Pauline Mattsson. "THE EFFECTS OF VISUAL SUPPORT BY A THREEDIMENSIONAL STAIRCASE MODEL ON INDOOR NAVIGATION AND SPATIAL ORIENTATION DURING VERTICAL MOTION." Thesis, Umeå universitet, Institutionen för psykologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-160753.

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Vertikala strukturer i byggnader har blivit väldigt vanligt och mer komplexa, därmed ökar vikten av wayfinding. Syftet med denna studie var att undersöka om en tredimensionell modell av en spiraltrappa ökar spatiala orienteringen när man rör sig vertikalt via den motsvarande existerande trappan. Ett experiment utfördes med 25 deltagare, 13 män and 12 kvinnor, mellan åldrarna 18-29 (M= 23.12, SD= 2.93). Hälften blev fördelade till testgrupp och andra hälften till kontrollgrupp. Båda grupper studerade en karta i 30 sekunder och blev instruerade att gå till ett mål på översta våningen. Testgruppen presenterades med ett visuellt hjälpmedel innan de gick in i trappan, kontrollgruppen såg inte detta hjälpmedel. När deltagarna nått översta våningen var deras uppgift att peka till tre olika platser, målet, starten och till Universum byggnaden med en kompassapplikation. Graderna av fel vid pekandet räknades ut och analyserades. Deltagarna fyllde även i Santa Barbara Sense of Direction skalan för att undersöka deras spatiala förmåga. Andra aspekter som togs i aktsamhet var huruvida de var familjära med byggnaden sedan tidigare och skillnader i utförandet mellan kvinnor och män. Resultatet visade något mindre fel vid pekuppgifterna av testgruppen än kontrollgruppen, dock visades ingen signifikant skillnad i datan. Alternativa tolkningar av resultatet och begränsningar tas upp i diskussionen.<br>Vertical structures in buildings have become very common and more complex, and thereby the importance of wayfinding increases. The aim of the present study was to investigate whether a three-dimensional model of a spiral staircase will improve spatial orientation when travelling in vertical motion via the corresponding real-world staircase. An experiment was conducted with 25 participants, 13 males and 12 females, between the ages of 18-29 (M= 23.12, SD= 2.93). They were divided into a test-group and a control-group. Both groups studied a map for 30 seconds and were instructed to walk to a goal on the top floor. The test-group was presented with a three-dimensional representation of the staircase as a visual aid before entering the stairs, the control-group was not presented with the aid. When the participants reached the top floor, they were instructed to point to the goal, the start and to the Universum building using a compass application. The pointing error was calculated and analyzed. The participants also filled in the Santa Barbara Sense of Direction scale to assess their spatial ability. Other aspects that was taken into consideration was to what extent the participants were familiar with the building the experiment took place in and differences in performance between men and women. Results show an indication of a smaller pointing error for the test-group than the control-group in all pointing tasks, however there were no statistically significant differences in the data. Alternative interpretations of the results and limitations of the study are discussed.
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Grahn, Jenny. "Från Norge till IS : Analyser av en ung mans radikalisering." Thesis, Umeå universitet, Institutionen för idé- och samhällsstudier, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-184307.

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Dagligen rapporteras om terrordåd runt om i världen; skolskjutningar, bombningar, massakrer. Denna uppsats ämnar visa på hur människor i vår omgivning kan drivas till att begå terrordåd och utgår från en analys av en bok som beskriver en ung mans radikalisering in i IS. Dels analyseras radikaliseringen utifrån Moghaddams trappa till terrorism och dels utifrån McCauley och Moskalenkos tvåpyramidsmodell. Boken som ligger till grund för analysen är Ingen plats för mig, skriven av författaren och journalisten Katia Wagner, som under ett av sina uppdrag i Norge mötte den unge tunisiern Ghazi. En hermeneutisk analys av händelseförloppet utifrån de bägge modellerna visar att modellerna på olika sätt belyser viktiga etapper i radikaliseringen av Ghazi. Uppsatsen resultat visar tydligt att radikaliseringen av Ghazi fungerat som en process där han successivt socialiserats in i en världsbild som bland annat betonat dualism, ett starkt kategoriserat tänkande och en skiftning i moralisk uppfattning.
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Webb, Cameron Olivia. "Effects of Fluoxetine/Simvastatin/Ascorbic Acid Combination Treatment on Neurogenesis and Functional Recovery in a Model of Multiple Sclerosis." Wright State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=wright1627589536292942.

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Harris, Deborah C. "Fremont Site Distribution in the Upper Escalante River Drainage." Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd2831.pdf.

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Nilsson, David, and Johanna Oscarsson. ""Vem orkar hålla på såhär, så länge?" - Socialarbetare om boendetrappan och organisationens betydelse i arbetet med socialt hemlösa." Thesis, Malmö universitet, Fakulteten för hälsa och samhälle (HS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-25680.

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Uppsatsen utgick från att fördjupa förståelsen för den problematik som visats i tidigare forskning gällande boendetrappan som metod i arbetet med socialt hemlösa individer. Uppsatsen utgick från Malmö stad eftersom hemlösheten stadigt har ökat i staden under det senaste decenniet. Kvalitativ metod i form av semistrukturerade intervjuer genomfördes där sju socialarbetare som arbetar med hemlöshet i Malmö stad intervjuades. Insamlad empiri analyserades utifrån Foucaults teori om normalisering och disciplinering samt organisationskultur. Det som påvisades i uppsatsen var de föreliggande svårigheterna som var rådande för socialarbetare i arbetet med social hemlöshet vid användning av boendetrappan som metod. Det framkom att boendetrappan ställer för höga krav på socialtjänstens klienter och är en metod som i många fall resulterat i misslyckande. Resultatet visade även att organisatoriska svårigheter förekom både genom motstridiga krav och brist på gemensam måluppfyllelse gällande hur arbetet med socialt hemlösa individer skulle genomföras. Vidare visade resultatet att socialtjänsten är en ekonomistyrd organisation där fokus ibland kan förskjutas mot att hålla budget framför klientens bästa. Det förelåg även svårigheter inom socialtjänsten som organisation att implementera andra metoder än boendetrappan utifrån de ekonomiska förutsättningarna och krav från samarbetspartners såsom hyresvärdar.<br>The aim of the essay was to deepen the understanding of the difficulties that has been proven in previous research of the staircase model as a method in the work of socially homeless individuals. The essay was based of the homelessness in the city of Malmö since it has had a steady increase in the city over the past decade. Qualitative method in the form of semi-structured interviews was performed with seven social workers who works with homelessness in the city of Malmö. The collected empirical data was analyzed based on Foucault's theory of normalization and discipline and also organizational culture. The results presented in the essay was the present difficulties that were prevalent for social workers in the work on social homelessness when using the staircase model as a method. It turned out that the staircase model places too high demands on the social services clients and is a method that in many cases has resulted in failure. The results also showed that organizational difficulties existed both through conflicting requirements and lack of common goal fulfillment regarding how work with socially homeless individuals should be implemented. Furthermore, the result showed that the social service is a financially controlled organization where focus sometimes can be shifted towards keeping budget to the disadvantage of what’s best for the client. There were also difficulties within the social services as an organization to implement methods other than the staircase model based on the economic conditions and requirements from partners such as landlords.
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Alfvenhierta, David, and Filip Charpentier. "Hjärterum med substans : Att vara hemlös förälder i missbruk – motverkansmodellerna, forskningen och Barnkonventionen." Thesis, Uppsala universitet, Centrum för socialt arbete - CESAR, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-384478.

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Den här studien sker mot bakgrund av uppgifter i nyhetsmedier där det berättats om de svårigheter som hemlösa möter om det är föräldrar till barn som inte delar deras situation i hemlöshet. Den sker också mot bakgrund av att Barnkonventionen inom kort inkorporeras i svensk lagstiftning. Studiens syfte är att undersöka hur det sociala problemet “att vara hemlös förälder i missbruk” konstrueras i vetenskapliga texter om två modeller för arbete med motverkan av hemlöshet i Sverige. Studiens syfte är också att skapa en djupare förståelse av om, och i så fall hur, nämnda modellers lösningar möjliggör för föräldern att tillgodose den rätt barnet enligt Barnkonventionen har till sina föräldrar, till bostad och till skydd, genom förälderns deltagande i respektive modell. Studiens metod är kvalitativ innehållsanalys och perspektivanalys utgör både teori och analysmetod utifrån socialkonstruktivistisk grund. De två problemperspektiv vi funnit har vi valt att kalla för ”behandling först – boende sedan” respektive ”boende först – behandling sedan”. De skiljer sig avsevärt från varandra beträffande hur det sociala problemets karaktär, orsak, konsekvenser, lösning och utveckling konstrueras. Det visar sig också finnas skillnader mellan hur problemperspektiven möjliggör tillgodoseendet av barnets rättigheter enligt Barnkonventionen. En viktig slutsats är avsaknaden av tydliga barnperspektiv i de bägge problemperspektiven. Studien finner även att ”behandling först – boende sedan” är ett problemperspektiv som bygger på en voluntaristisk orsaksförklaring medan ”boende först – behandling sedan” istället bygger på en deterministisk.
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Wall, Steven E. "Structure and evolution of thermohaline staircases in tropical North Atlantic." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Dec%5FWall.pdf.

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Thesis (M.S. in Physical Oceanography)--Naval Postgraduate School, December 2007.<br>Thesis Advisor(s): Radko, Timour. "December 2007." Description based on title screen as viewed on January 24, 2008. Includes bibliographical references (p. 83-86). Also available in print.
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Mazzoni, Michele. "Generalized hydrodynamics of a (1+1)-dimensional integrable scattering theory with roaming trajectories." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23209/.

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The emergence of hydrodynamic features in off-equilibrium (1 + 1)-dimensional integrable quantum systems has been the object of increasing attention in recent years. In this Master Thesis, we combine Thermodynamic Bethe Ansatz (TBA) techniques for finite-temperature quantum field theories with the Generalized Hydrodynamics (GHD) picture to provide a theoretical and numerical analysis of Zamolodchikov’s staircase model both at thermal equilibrium and in inhomogeneous generalized Gibbs ensembles. The staircase model is a diagonal (1 + 1)-dimensional integrable scattering theory with the remarkable property of roaming between infinitely many critical points when moving along a renormalization group trajectory. Namely, the finite-temperature dimensionless ground-state energy of the system approaches the central charges of all the minimal unitary conformal field theories (CFTs) M_p as the temperature varies. Within the GHD framework we develop a detailed study of the staircase model’s hydrodynamics and compare its quite surprising features to those displayed by a class of non-diagonal massless models flowing between adjacent points in the M_p series. Finally, employing both TBA and GHD techniques, we generalize to higher-spin local and quasi-local conserved charges the results obtained by B. Doyon and D. Bernard [1] for the steady-state energy current in off-equilibrium conformal field theories.
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Shih-Hsieh, Lo, and 羅世協. "Modal Analysis of Multiple Staircase Rectangular Waveguides." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/09371795966932306958.

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碩士<br>國立中山大學<br>光電工程學研究所<br>86<br>In the thesis,we propose an analysic method which is suitable for studying modal analysis of multiple staircase rectangular waveguides.We discuss a few structureusing this modal. We found that for multiple staircase rectangular waveguides,the standard TE and TM modalsapproach get direct in our modal. These modal are better suited for describing the complete wave physic.The technique weused in this thesis is called generalized transmission line theory which hasbeen derived via method with Spectral Domain Integral Equation. In which,we convert admittance matrix into Matrix Equation. We also developed basis transformation technique and introduce general admittance matrix for multiple staircase rectangular waveguides.Numerical method accuratelycomputes the exact electromagnetic field inside the waveguides. It helps us to better understand wave propagation physics in complex waveguide structures and provides verification of our theory.
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Books on the topic "Staircase model"

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Bangash, M. Y. H. Staircases: Structural analysis and design. A.A. Balkema, 1999.

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Geier, János, and Mariann Hudák. Changing the Chevreul Illusion by a Background Luminance Ramp. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780199794607.003.0044.

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The Chevreul illusion comprises adjacent homogeneous grey bands of different luminance, which are perceived as inhomogeneous. It is generally explained by lateral inhibition. When the Chevreul staircase is placed in a luminance ramp background, the illusion noticeably changes. Since all conditions of the lateral inhibition account are untouched within the staircase, lateral inhibition (which is a local model) fails to model these perceptual changes. Another ramp was placed around the staircase, whose direction was opposite to that of the original, larger ramp. The result here is that though the inner ramp is rather narrow, it still dominates perception. The chapter concludes that long-range interactions between boundary edges and areas enclosed by them provide a much more plausible account for these brightness phenomena, and local models are insufficient.
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Siegler, Robert S. Emerging Minds. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195077872.001.0001.

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How do children acquire the vast array of concepts, strategies, and skills that distinguish the thinking of infants and toddlers from that of preschoolers, older children, and adolescents? In this new book, Robert Siegler addresses these and other fundamental questions about children's thinking. Previous theories have tended to depict cognitive development much like a staircase. At an early age, children think in one way; as they get older, they step up to increasingly higher ways of thinking. Siegler proposes that viewing the development within an evolutionary framework is more useful than a staircase model. The evolution of species depends on mechanisms for generating variability, for choosing adaptively among the variants, and for preserving the lessons of past experience so that successful variants become increasingly prevalent. The development of children's thinking appears to depend on mechanisms to fulfill these same functions. Siegler's theory is consistent with a great deal of evidence. It unifies phenomena from such areas as problem solving, reasoning, and memory, and reveals commonalities in the thinking of people of all ages. Most important, it leads to valuable insights regarding a basic question about children's thinking asked by cognitive, developmental, and educational psychologists: How does change occur?
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Study of Movement Speeds Down Stairs Springerbriefs in Fire. Springer, 2012.

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Book chapters on the topic "Staircase model"

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Miner, Annette, and Brenda Nicodemus. "The Staircase Model for Interpreter Education." In Situated Learning in Interpreter Education. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68904-9_3.

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Belver, Ali Vasallo, Stana Zivanovic, HiepVu Dang, Melania Istrate, and Antolin Lorenzana Iban. "Modal Testing and FE Model Updating of a Lively Staircase Structure." In Topics in Modal Analysis I, Volume 5. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-2425-3_51.

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Hakonen, Henri, and Marja-Liisa Siikonen. "Simulation Models of Merging Priorities in Staircases." In Pedestrian and Evacuation Dynamics 2012. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-02447-9_77.

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de OLIVEIRA, M. J., S. R. SALINAS, and C. S. O. YOKOI. "DEVIL'S STAIRCASE AND STRANGE ATTRACTOR IN THE ISING MODEL WITH COMPETING INTERACTIONS." In Fractals in Physics. Elsevier, 1986. http://dx.doi.org/10.1016/b978-0-444-86995-1.50079-2.

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Aubry, Serge. "The Twist Map, the Extended Frenkel–Kontorova Model and the Devil’s Staircase." In Hamiltonian Dynamical Systems. CRC Press, 2020. http://dx.doi.org/10.1201/9781003069515-53.

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Angus, Colin. "Costs and health effects." In Distributional Cost-Effectiveness Analysis, edited by Kjell Arne Johansson, Matthew M. Coates, Jan-Magnus Økland, et al. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198838197.003.0008.

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This chapter shows how to model the distribution of costs and health effects of a health programme by equity-relevant characteristics. We introduce the ‘staircase of inequality’, a framework for thinking about the main steps in the causal pathway leading to differences in costs and effects by equity-relevant characteristics. We then illustrate the application of this framework with the example of public funding options for nicotine replacement therapy (NRT) in England. In this case, the main steps along the staircase of inequality are: need (who smokes), receipt (which smokers use smoking cessation services and how delivery costs vary), short-term effect (which service users succeed in quitting), and long-term effect (which short-term quitters become long-term quitters and how many healthy years they gain). At each step, we model differences in costs and effects by socioeconomic status and geography. We then combine this information to simulate the distribution of lifetime costs and health effects. The framework can also be applied to other equity-relevant variables, such as ethnicity or gender, other concepts of health, and other time horizons. We discuss the key assumptions and data requirements for implementing this approach, highlighting potential data sources and providing guidance for setting these parameters when evidence is scarce.
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Schmidt, Freek. "The Rise of the Staircase : Motion in Eighteenth-Century Dutch Domestic Architecture." In Early Modern Spaces in Motion. Amsterdam University Press, 2020. http://dx.doi.org/10.5117/9789463725811_ch05.

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In the eighteenth-century homes of the Dutch elite, the indispensable but inconspicuous device of the stairs developed into a monumental, designed centrepiece of the house. This contribution considers the new open-well staircase in the broader context of the growing demand for social space, a recurring interest in French (court) culture and fashion, and a specific interest among the Dutch elite in graceful movement of the civilized human body. A closer study of architectural model books, etiquette manuals, and reflections on cultured behavior, style, elegance, and physical movement helps to explain the rise of this space-consuming element in eighteenth-century houses in the Netherlands and Amsterdam in particular.
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Siegler, Robert S. "Strategic Development: Trudging up the Staircase or Swimming with the Tide?" In Emerging Minds. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195077872.003.0007.

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As described in the previous chapter, children’s thinking is highly variable. The present chapter focuses on implications of this variability for understanding development. Thinking about a pair of visual metaphors may help facilitate recognition of these implications. The first, which I believe underlies most depictions of development, is the staircase metaphor. The second, which I believe offers a superior alternative, is the overlapping waves metaphor. Cognitive developmentalists have often phrased their models in terms that suggest that children of a given age think about a given task in a single way. W-year-olds are said to have a particular mental structure, a particular processing limit, a particular theory, strategy, or rule that gives rise to a single type of behavior. Change involves a substitution of one mental entity (and accompanying behavior) for another. The basic conceptualization that seems to underlie these models is aptly captured in the title of Robbie Case’s (1992) recent book The Mind’s Staircase. The visual metaphor that this title evokes is, I believe, central to most cognitive-developmental treatments of change: Children are depicted as thinking in a given way for an extended period of time (a tread on the staircase); then their thinking undergoes a sudden, vertical shift (a riser on the staircase); then they think in a different, higher way for another extended period of time (the next tread); and so on. This view of development is most closely identified with Piagetian and neo-Piagetian approaches, such as those of Piaget and Case. Thus, as shown in Figure 4.1, we see development depicted within Piaget’s theory as involving sensorimotor activities from birth to about 2 years; preoperational thinking from 2 to 7 years; concrete operational thinking from 7 to 12 years; and formal operational thinking from 12 years onward. Within Case’s theory, we see thinking depicted as advancing from the sensorimotor level between birth and 18 months, to the relational level from 18 months to 5 years, to the dimensional level between 5 and 11 years, and to the formal level at age 11 and beyond. Although this view of development is associated with the Piagetian and neo-Piagetian traditions, it is far from unique to them.
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Conference papers on the topic "Staircase model"

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Barthe, P. G., and P. J. Benkeser. "A Staircase Model of Tapered Piezoelectric Transducers." In IEEE 1987 Ultrasonics Symposium. IEEE, 1987. http://dx.doi.org/10.1109/ultsym.1987.199049.

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Ruan, Jianzhong, Lie Tang, Todd E. Sparks, Robert G. Landers, and Frank Liou. "Direct 3D Layer Metal Deposition and Toolpath Generation." In ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/detc2008-50062.

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Multi-axis slicing for solid freeform fabrication (SFF) manufacturing process can yield non-uniform thickness layers, or 3-D layers. Using the traditional parallel layer construction approach to build such a layer leads to a staircase which requires machining or other post processing to form the desired shape. This paper presents a direct 3-D layer deposition approach. This approach uses an empirical model to predict the layer thickness based on experimental data. The toolpath between layers is not parallel; instead, it follows the final shape of the designed geometry and the distance between the toolpath in the adjacent layers varies at different locations. Directly depositing a 3-D layer not only eliminates the staircase effect, but also improves the manufacturing efficiency by shortening the deposition and machining times. A single track deposition experiment has demonstrated these advantages. Thus, it is a beneficial addition to the traditional parallel deposition method.
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Cappellini, A., S. Manzoni, and M. Vanali. "QUANTIFICATION OF THE STRUCTURAL RESPONSE OF A STAIRCASE DAMPED BY THE PRESENCE OF PEOPLE: NUMERICAL MODEL AND EXPERIMENTAL TESTS." In 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering. Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2014. http://dx.doi.org/10.7712/120113.4693.c1390.

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Gonzalez, David, Nicholas Giglio, Layton Hall, Viktoriya Vinnichenko, and Nathaniel M. Fried. "Comparison of single, dual, and staircase temporal pulse profiles for reducing stone retropulsion during thulium fiber laser lithotripsy in an in vitro stone phantom model." In Therapeutics and Diagnostics in Urology 2019, edited by Hyun Wook Kang. SPIE, 2019. http://dx.doi.org/10.1117/12.2514052.

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Li, Ye, and Jian Zhang. "Determining Optimal Building Direction for Rapid Prototyping Based on Unit Sphere Searching." 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/detc2012-70210.

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Although Rapid prototyping, as a material-additive process, is able to create complex geometries that traditional material-removal processes cannot achieve, it still suffers from its limitation due to the layer manufacturing nature. In order to minimize staircase effects, selection of building orientation is an important step in implementing rapid prototyping processes. This paper presents a method to select the optimal direction that leads to minimized volumetric error in building a part from layer manufacturing processes. A unit sphere is discretized first to give potential directions in a 3-D space, and then each facet comprising an STL geometric model is mapped onto the discretized unit sphere as a great circle individually. Both an exhaustive search and a chain searching strategy are presented to identify the globally optimal direction for building a 3-D geometry. At the end of the paper, examples are presented to show the effectiveness of the method.
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Filippini, Mauro, Stefano Beretta, Luca Patriarca, Giuseppe Pasquero, and Silvia Sabbadini. "Assessment of Fatigue Sensitivity to Defects of a TiAl Alloy Produced by Electron Beam Melting (EBM)." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69986.

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The fatigue properties of a Ti-48Al-2Cr-2Nb alloy obtained by electron beam melting (EBM) has been examined by conducting high cycle fatigue tests performed at different R ratios both at room temperature and at high temperatures, comparable to those experienced by the components during service. Additionally, a fairly large set of specimens with artificially introduced defects, has been used to conduct fatigue tests with the objective of studying the growth behavior of small cracks. Artificial defects with different sizes have been generated in the gauge section of the specimens by EDM (Electro Discharge Machining). After EDM defects were produced, the specimens have been pre-cracked in cyclic compression, so that small cracks could be generated at the root of the EDM starter defects. Fatigue tests have been conducted by applying the staircase technique with the number of cycles of censored test (runout) fixed at 107 cycles. By employing the Murakami model for the calculation of the range of stress intensity factor, the threshold stress intensity factor range dependence on the loading ratio R and on the defect size has been evaluated, and a modified El-Haddad model describing the dependence of the fatigue endurance strength on the defect size has been established, highlighting the relevant parameters that govern the specific mechanisms of failure of the gamma TiAl alloy studied in the present work.
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Giesy, D., S. Kenny, and L. Crespo. "Random predictor models with a nonparametric staircase structure." In The 2nd International Conference on Engineering Sciences and Technologies. CRC Press, 2017. http://dx.doi.org/10.1201/9781315210469-332.

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Munn, Brian S., and Keyu Li. "Investigation Into the Effect of Thread Root Condition on the High Cycle Fatigue Performance of a Metric Threaded Fastener." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25227.

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This paper presents an experimental investigation into the effect of thread root condition on the high cycle fatigue behavior of a tightened M12 metric fastener under a fully reversed, cyclic load. Two conditions were mechanically created at the fastener thread root. The first had an elastic condition with no localized plastic straining, and the second had localized plastic straining at the thread root. The elastic or plastic condition at the thread root was created by tightening the metric fastener into a fabricated steel joint at several different input or tightening torque levels prior to the application of a fully, reversed cyclic load. The fully reversed cyclic load was applied and a staircase methodology used in accordance to International Standard (ISO) 3800:1993(E). Fatigue results were also evaluated in conformance with (ISO) 3800:1993(E) to determine fatigue strengths at five million cycles. All fatigue tests were run at a rate of 50 Hz under a simple, sinusoidal wave form until either failure (rupture) or five-million cycles was attained and the test suspended. The fatigue strength values were then plotted on a graph of applied stress amplitude versus nominal mean stress level commonly referred to as a Modified Goodman diagram for bolted joints. The plotted fatigue strength data was not linear but displayed a knee or a bend. This knee or bend represents a transition point in the fatigue behavior of the threaded fastener. To describe the fatigue behavior, a bi-linear model has been applied. This bi-linear model is based on the local condition at the thread root. The knee represents a transition in condition from elastic to plastic behavior at the thread root. The result of this study shows that fastener fatigue behavior was influenced by the condition at the thread root.
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Wise, Elliott, Ben Cox, and Bradley Treeby. "Staircase-free acoustic sources for grid-based models of wave propagation." In 2017 IEEE International Ultrasonics Symposium (IUS). IEEE, 2017. http://dx.doi.org/10.1109/ultsym.2017.8091761.

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Wise, Elliott S., James L. B. Robertson, Ben T. Cox, and Bradley E. Treeby. "Staircase-free acoustic sources for grid-based models of wave propagation." In 2017 IEEE International Ultrasonics Symposium (IUS). IEEE, 2017. http://dx.doi.org/10.1109/ultsym.2017.8092730.

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Reports on the topic "Staircase model"

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Yeh, Wang-Chi Vincent. SPA-LEED Study of the Morphology and Nucleation of a Novel Growth Mode and the ''devil's staircase'' on Pb/Si(111). Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/822043.

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