Relevant bibliographies by topics / Relative moving ratio

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Relative moving ratio'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Relative moving ratio"

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Kauko, Karlo, and Eero Tölö. "Banking Crisis Prediction with Differenced Relative Credit." Applied Economics Quarterly: Volume 65, Issue 4 65, no. 4 (October 1, 2019): 277–97. http://dx.doi.org/10.3790/aeq.65.4.277.

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Abstract Indicators based on the ratio of credit to GDP have been found to be highly useful predictors of banking crises. Differences in this ratio seem a highly promising early warning indicator. We test a large number of slightly different versions of the differenced credit-to-GDP ratio with data on euro area members. The optimal time interval of the difference is about two years. Using the moving average of GDP over several years rather than the latest annual data is shown to have little impact on forecasting performance. The proposed indicator demonstrates particular promise at relatively short forecasting horizons (2–3 years).
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Wijaya, Ronni Andri, Yamasitha Yamasitha, Elfiswandi Elfiswandi, and Lusiana Lusiana. "Relative Strenght Index, Moving Average Convergence-Divergence on Stock Performance and Fundamental Analysis as Moderating." UPI YPTK Journal of Business and Economics 6, no. 2 (August 5, 2021): 27–30. http://dx.doi.org/10.35134/jbe.v6i2.40.

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This study aims to determine the effect of Relative Strength Index (RSI) and Moving Average Convergence-divergence (MACD) on stock performers with Debt to Equity Ratio (DER) as a Moderation variable in Financing companies listed on the Indonesian Stock Exchange (IDX). Sampling in the study using purpose sampling method obtained 14 companies with time series data. The analysis method used in this study is multiple linear regression analysis using eview. The results show that Relative Strenth Index (RSI) partially has a positive and significant effect on stock performance, Moving Average Convergence-divergence (MACD) partially has a positive and significant effect on stock performance, Relative Strenth Index (RSI) has a positive and significant effect on stock performance. which is moderated by Debt to Equity Ratio (DER), Moving Average Convergence-divergence (MACD) has a positive and significant effect on the Performance of Shares moderated by Debt to Equity Ratio (DER).
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Castrejón-Pita, J. Rafael, Beatriz N. Muñoz-Sánchez, Ian M. Hutchings, and A. A. Castrejón-Pita. "Droplet impact onto moving liquids." Journal of Fluid Mechanics 809 (November 15, 2016): 716–25. http://dx.doi.org/10.1017/jfm.2016.672.

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From rain drops landing on the ocean to inkjet printing, the impact of droplets onto moving liquid surfaces is a ubiquitous process in nature and in industry. A rich range of phenomena can arise. The behaviour depends on the inertia, the properties of the drops and the relative speeds in the impact zone. While the result ranges from tranquil coalescence to violent splashing, intermediate regimes also occur, including partial and complete bouncing and even ‘surfing’ of the droplet. These regimes are determined by the ratio of the drop and surface velocities and the liquid properties. A regime diagram can be constructed in which distinct dynamical regimes are clearly identified.
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Wu, Lin, Xiao Pei Wu, and Juan Xu. "Moving Target Classification in Road Monitoring Based on Multi-Feature Fusion." Applied Mechanics and Materials 401-403 (September 2013): 1208–11. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.1208.

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A method for moving target classification in road monitoring based on multi-feature fusion is presented in this paper. In this method, connected component labeling and merging combined with morphology are used to achieve the target extraction. Static features in moving target are extracted. To improve the low classification accuracy, a dynamic feature, lower thirds aspect ratio variation (also named as LTVar), is proposed and added. The recognition ratio obtains the relative increasing of 3.1% compared with the static features.
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Dimic, Nebojsa, Vitaly Orlov, and Janne Äijö. "Bond–Equity Yield Ratio Market Timing in Emerging Markets." Journal of Emerging Market Finance 18, no. 1 (March 28, 2019): 52–79. http://dx.doi.org/10.1177/0972652719831536.

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This article investigates the market timing ability of the bond–equity yield ratio (BEYR) from an international investor perspective. Consolidating data on emerging markets, we document no major international evidence that BEYR-based investing strategies, namely extreme values, thresholds and moving averages, provide higher risk-adjusted returns than benchmark buy-and-hold portfolios. However, we develop new augmented BEYR indicators by introducing the notion of US bonds as a safe investment relative to emerging market stocks and bonds. Dynamic strategies based on our augmented BEYR indicators produce significant gains in risk-adjusted returns compared with traditional BEYR and buy-and-hold benchmark strategies. JEL Classifications: G11, G12, G15
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Chitsazan, Ali, and Birgit Glasmacher. "Numerical Investigation of Heat Transfer and Pressure Force from Multiple Jets Impinging on a Moving Flat Surface." International Journal of Heat and Technology 38, no. 3 (October 15, 2020): 601–10. http://dx.doi.org/10.18280/ijht.380304.

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In this paper extensive numerical investigation of the heat transfer characteristics and the pressure force of jet impingement from the single row and multiple rows on a fixed and moving flat surface are reported. The computations were carried out over a wide range of parameters: relative nozzle-to-surface distance (H/d) from 0.5 to 6, relative nozzle to nozzle distances (S/d) from 4 to 10, jet angle from 45° to 90°, relative velocity ratio (Vplate/Vj) i.e. ratio of surface velocity to jet velocity from 0 to 1. The jet Reynolds number (Re) of 2,500, 3,400, 10,000, 20,000, and 23,000 and the number of jet rows of 1, 2, 4, and 8 have been used. It was found that the numerical accuracy by SST k-ω model is reasonably high to allow for a discussion of the main flow and heat transfer characteristics. The jet impingement heat transfer performance is generally enhanced with the increase of jet Reynolds number and jet angle and with the decrease of surface distance (H/d), jet distance (S/d) and the relative velocity ratio (Vplate/Vj) within the range examined. The pressure force coefficients on the impingement surface are relatively insensitive to Re number and the velocity ratio within the range examined, while it has highly dependent on H/d, S/d and jet angle. For multiple rows of aligned jet holes, the flow pattern exhibited a different shape due to the different intensity of the interference between adjacent air jets. The effect of multiple rows with regards to the impact on average Nu and pressure force coefficient for different geometry variations such as Re, H/d, S/d, VR and ɵ is negligible compared to the single row by approximately 9 and 13% in average respectively. Based on the computed results, equations of dimensionless parameters are correlated.
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Spratt, Daniel E., and Jonathan D. Tward. "Absolute versus Relative Benefit of Androgen Deprivation Therapy for Prostate Cancer: Moving Beyond the Hazard Ratio to Personalize Therapy." International Journal of Radiation Oncology*Biology*Physics 108, no. 4 (November 2020): 899–902. http://dx.doi.org/10.1016/j.ijrobp.2020.06.011.

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Uno, Hajime, Brian Claggett, Lu Tian, Eisuke Inoue, Paul Gallo, Toshio Miyata, Deborah Schrag, et al. "Moving Beyond the Hazard Ratio in Quantifying the Between-Group Difference in Survival Analysis." Journal of Clinical Oncology 32, no. 22 (August 1, 2014): 2380–85. http://dx.doi.org/10.1200/jco.2014.55.2208.

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In a longitudinal clinical study to compare two groups, the primary end point is often the time to a specific event (eg, disease progression, death). The hazard ratio estimate is routinely used to empirically quantify the between-group difference under the assumption that the ratio of the two hazard functions is approximately constant over time. When this assumption is plausible, such a ratio estimate may capture the relative difference between two survival curves. However, the clinical meaning of such a ratio estimate is difficult, if not impossible, to interpret when the underlying proportional hazards assumption is violated (ie, the hazard ratio is not constant over time). Although this issue has been studied extensively and various alternatives to the hazard ratio estimator have been discussed in the statistical literature, such crucial information does not seem to have reached the broader community of health science researchers. In this article, we summarize several critical concerns regarding this conventional practice and discuss various well-known alternatives for quantifying the underlying differences between groups with respect to a time-to-event end point. The data from three recent cancer clinical trials, which reflect a variety of scenarios, are used throughout to illustrate our discussions. When there is not sufficient information about the profile of the between-group difference at the design stage of the study, we encourage practitioners to consider a prespecified, clinically meaningful, model-free measure for quantifying the difference and to use robust estimation procedures to draw primary inferences.
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Yokoi, Yoshifumi, and Hiromi Fukuta. "Flow Visualized Observation of a Symmetrical Airfoil with Attack Angle in Fluctuating Relative Flow Velocity." Applied Mechanics and Materials 390 (August 2013): 38–42. http://dx.doi.org/10.4028/www.scientific.net/amm.390.38.

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In this study, a visualization experiment was performed in order to confirm the flow pattern around airfoil with relative velocity fluctuation by in-line forced oscillating in the direction of flow. An airfoil NACA0012 with attack angle of 5 degrees produce the separation in the steady state was observed by the experiments using dye streak method at Reynolds number Re=3.6x103. The investigation of the attack angle which does not separate in such low Reynolds number was performed, and it was confirmed that the separation occurs to 3 degrees. And the airfoil with attack angle of 2 degrees which does not cause separation in steady state, was forced to oscillate with two kinds of relative velocity ratio (umax/U=0.4 and 0.8, here, umax and U denote maximum moving speed of airfoil and main flow velocity, respectively.). The flow separation on the surface of airfoil with attack angle which does not produce the separation in the steady state is occurred even if the maximum moving speed of airfoil umax is in the range which does not exceed main flow velocity U.
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Osman, Mohamad, Richard H. J. Willden, and Christopher R. Vogel. "The effects of surge motion on floating horizontal axis tidal turbines." International Marine Energy Journal 3, no. 2 (September 10, 2020): 45–54. http://dx.doi.org/10.36688/imej.3.45-54.

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Wave induced motions due to actual sea state conditions will impact the performance of floating horizontal axis tidal turbine systems. This paper presents the results from numerical simulations of a 3-bladed horizontal axis tidal turbine oscillating in surge motion in a moving reference frame. The optimum tip-speed ratio, λ = 4.4 and k-ω SST turbulence model were used in the present study. The Navier-Stokes equation was modified by adding an inertial term to the equation and the Dirichlet boundary condition was also modified in order to simulate in the moving reference frame. The surge oscillations were parameterised in terms of the ratio of surge amplitude to rotor radius, A*, and the ratio of oscillation frequency to the rotational frequency of the rotor, ω*. A series of tests were conducted to study the effect of each parameter on the hydrodynamic performance of the tidal turbine. The results show that stall can occur on the blade when the velocity relative to the rotor is sufficiently high. In certain cases, negative thrust and power coefficients were observed when the velocity relative to the rotor is low. The fluctuation in blade loading increases together with the amplitude and frequency of oscillation, which will contribute to the fatigue of the rotor.
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Dissertations / Theses on the topic "Relative moving ratio"

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Bezděk, Petr. "Investiční modely v prostředí finančních trhů." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2016. http://www.nusl.cz/ntk/nusl-234818.

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The content of my master´s thesis is the creation of automatic trading system which will be applied on real trading account mainly on financial markets of currency pairs. The thesis is divided to several parts where the theoretical part will introduce the problem of trading on financial markets. Following part analyses needs of small trader on the financial markets, selecting suitable instruments which will be used in automatic trading system. The part of the own solution design will create the mentioned automatic trading system which will be applied on broker´s demo account where the system will be tested mainly on historical data. Based on test results, system will be optimized and in case of usable results of testing also system will be applied on real trading account in trading company.
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Book chapters on the topic "Relative moving ratio"

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Strelkova, Tatyana, Alexander I. Strelkov, Vladimir M. Kartashov, Alexander P. Lytyuga, and Alexander S. Kalmykov. "Methods of Reception and Signal Processing in Machine Vision Systems." In Examining Optoelectronics in Machine Vision and Applications in Industry 4.0, 71–102. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-6522-3.ch003.

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The chapter covers development of mathematical model of signals in optoelectronic systems. The mathematical model can be used as a base for detection algorithm development for optical signal from objects. Analytical expressions for mean values and signal and noise components dispersion are cited. These expressions can be used for estimating efficiency of the offered algorithm by the criterion of detection probabilistic characteristics and criterion of signal/noise relation value. The possibility of signal detection characteristics improvement with low signal-to-noise ratio is shown. The method is proposed for detection of moving objects and combines correlation and threshold methods, as well as optimization of the interframe processing of the sequence of analyzed frames. This method allows estimating the statistical characteristics of the signal and noise components and calculating the correlation integral when detecting moving low-contrast objects. The proposed algorithm for detecting moving objects in low illuminance conditions allows preventing the manifestation of the blur effect.
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"Burbot: Ecology, Management, and Culture." In Burbot: Ecology, Management, and Culture, edited by James L. Dunnigan and Cameron L. Sinclair. American Fisheries Society, 2008. http://dx.doi.org/10.47886/9781888569988.ch3.

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Abstract.—Adult burbot <em>Lota lota </em>from Koocanusa Reservoir, Montana, USA were surgically implanted with acoustic (<em>n </em>= 28) and combined radio/acoustic tags (<em>n </em>= 12) to quantify movements and home range. Fish were tagged from November 2003 to April 2004, and tracking efforts were conducted approximately weekly during daylight hours on Koocanusa Reservoir using a motor boat during the period of mid-December 2003 to July 2005, which spanned two burbot spawning seasons. Six (15%) tagged burbot were never relocated after release, and an additional seven (17.5%) of the tagged burbot either died or shed their tag within 60 d after release. We relocated 34 marked burbot (85%) on at least three occasions (mean = 10.0). Burbot frequently used the deepest portions of the reservoir, especially during the summer months. We estimated that the mean 50%, 75%, and 90% kernel home ranges were 14.6, 22.6 and 32.3 km<sup>2</sup>, respectively. We found no evidence that burbot home range differed within the 2 years of this study. Although we did observe burbot moving a maximum distance of up to 64.3 km, we were unable to discern any general movement patterns by month or capture location. Individual burbot tagged in this study had relatively high fidelity to the original capture side of the reservoir, and almost half of our marked burbot were never relocated on the opposite side of the remnant Kootenai River thalweg, and those that did cross the thalweg do so infrequently. One burbot was entrained through Libby Dam approximately 134–276 d after capture and tagging.
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Conference papers on the topic "Relative moving ratio"

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Lefas, Demetrios, and Robert J. Miller. "Transonic Relief in Fans and Compressors." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-15064.

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Abstract Every supersonic fan or compressor blade row has a streamtube, the ‘sonic streamtube’, which operates with a blade relative inlet Mach number of one. A key parameter in the design of the ‘sonic streamtube’ is the area ratio between the blade throat area and upstream passage area, Athroat/Ainlet. In this paper, it is shown that one unique value exists for this area ratio. If the area ratio differs, even slightly, from this unique value then the blade either chokes or has its suction surface boundary layer separated due to a strong shock. It is therefore surprising that in practice designers have relatively little problem designing blade sections with an inlet relative Mach number close to unity. This paper shows that this occurs due to a physical mechanism known as ‘transonic relief’. If a designer makes a mistake, and designs a blade with a ‘sonic streamtube’ which has the wrong area ratio, then ‘transonic relief’, will self-adjust the spanwise streamtube height automatically moving it towards the unique optimal area ratio, correcting for the designer’s error. Furthermore, as the blade incidence changes, the spanwise streamtube height self-adjusts, moving the area ratio towards its unique optimal value. Without ‘transonic relief’, supersonic and transonic fan and compressor design would be impossible. The paper develops a simple model which allows ‘transonic relief’ to be decoupled from other mechanisms, and to be systematically studied. The physical mechanism on which it is based is thus determined and its implications for blade design and manufacturing discussed.
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Champmartin, Ste´phane, Abdlehak Ambari, and Abderrahim Ben Richou. "Kinematics of a Free Particle Moving Between Two Parallel Walls." In ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels collocated with 3rd Joint US-European Fluids Engineering Summer Meeting. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30502.

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The understanding of some physical phenomena involved in the transport of free particles such as fibers during injection processes is an important issue. To answer some of the questions arising in such problems, we study here numerically the quasi-steady kinematics of a free cylindrical solid particle moving in a Newtonian fluid confined between two parallel plane walls taking the hydrodynamic interactions into account. This is achieved by the use of the resistance matrix technique relating the kinematics of the particle to the forces and the torques exerted on the particle and to the dissipation induced by the motion of this particle. Our approach is confirmed by asymptotical developments and by a comparison with other authors in some cases. The solutions of three practical problems are given. In the first one, the sedimentation of the particle is studied. It is found that the maximum settling velocity of the free particle is obtained at a position off the symmetry plane. The cylinder is observed to rotate counter intuitively against the direction of rolling along the adjacent wall. Moreover the angular velocity has an influence on the settling velocity when the concentration is very high. The second problem concerns the transport of a neutrally buoyant cylindrical particle in a Poiseuille flow. This study reveals that there are relative translational and angular velocities between the free particle and the undisturbed fluid particle contrary to the commonly admitted hypothesis used in several models and numerical codes. Finally the third problem is a combination of the two previous situations: the transport of a non-neutrally buoyant particle in a Poiseuille flow. Depending on the ratio of the buoyancy forces to the viscous ones, different solutions are possible and exposed. Other problems can also be solved with this approach which is less time-consuming than complex methods such as DNS.
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Borello, Domenico, Giovanni Delibra, Kemal Hanjalic´, and Franco Rispoli. "Hybrid LES/RANS Study of Turbulent Flow in a Linear Compressor Cascade With Moving Casing." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23755.

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In this work a robust hybrid LES/RANS model has been applied to the prediction of secondary flows in a linear compressor cascade with moving casing simulating the relative motion between blade and the casing. The hybrid LES/RANS model uses the well established Ζ-f URANS model of Hanjalic´ et al. (2004) in the near wall region coupled with dynamic Smagorinsky LES. The switch between the two zones is based on a couple of parameters defining the boundary of interface region: the first one is a grid-detection parameter expressed as a function of the ratio between the turbulent and LES characteristic length scales while the switching to pure LES is obtained when the subgrid scale viscosity is greater than eddy viscosity (Delibra et al., 2010). We present hybrid LES/RANS results of a 3D linear compressor cascade with a tip leakage equal to 1.65% of chord. We compare two cascade configurations: with stationary casing and with moving casing. The second simulation allows to scrutinize the exclusive influence of the relative motion between casing and blades on the tip leakage vortex and the turbulent structures developing in the wake. The quality of the results and their agreement with experiments are encouraging in terms of prediction of the main flow characteristics and identification of turbulence structures.
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Masuda, Arata, and Chisato Sawai. "Stick-Slip Energy Harvesting: A Preliminary Study." In ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/smasis2017-3994.

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In this paper, a design of an energy harvesting device which converts a translational relative motion to an oscillatory motion via stick-slip phenomenon is presented. In this design, an L-shape cantilever is used as an energy converter, the tip of which is rubbed by a linearly moving rubber pad. The induced stick-slip motion produces a relatively high frequency oscillation in the middle part of the cantilever during the stick phase, which is then converted to the electrical energy via a piezoelectric element attached on the cantilever surface. Testing of a proof-of-concept prototype reveals how the linear relative motion induces the stick-slip motion and the high frequency oscillation of the cantilever. The dependence of the stick-slip frequency on the design parameters is preliminary studied. Then, the load resistance optimization and the maximum output power are discussed, and the energy efficiency which is defined as the ratio of the output electrical energy to the input mechanical work during the rubbing motion is evaluated.
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Liu, Xiyu, and Yueming Tang. "Theoretical Analysis of Ultrasonic Testing Technique for Dissimilar Metal Weld." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15504.

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The weld is a typical dissimilar metal weld (DMW). As its large grain, anisotropism and narrow moving space for probe, it is difficult for practical ultrasonic testing. On the basis of studying weld structure, this thesis firstly discusses the sonic propagation path of different incident angle, and then calculates the reflectivity and transmittivity, from which the ratio-angle curve will be plotted, finally simulates & analyzes the ultrasonic testing with software CIVA. The analysis results show that proper selection of the incident angle will provide suitable incident angle range for the following experiments. With the CIVA analysis results, it will also provide references for choosing proper probe parameters and relative technics for following research.
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Gibson, Lee, Stephen Spence, Sung In Kim, Charles Stuart, Martin Schwitzke, Andre Starke, and Dietmar Filsinger. "An Investigation Into the Effect of Clearance Aspect Ratio on the Performance of a Variable Geometry Vaned Diffuser for Automotive Turbocharger Application." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14905.

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Abstract The current state-of-the-art in radial compressor design for automotive turbocharger applications utilize impellers with a high trailing edge backsweep angle and a vaneless diffuser to provide a high boost pressure over a wide operating range. A unique feature of this type of design is that the peak efficiency island is typically located near the choke side of the compressor map. As such, the compressor efficiency is generally satisfactory when the engine is operating at high speed, such as the rated power condition. However, at low speeds the engine operating line is located close to the compressor surge line where the efficiency is generally modest. Thus, there is a need to improve the compressor efficiency at low engine speeds without compromising performance near the choke side of the map or the overall map width. Variable geometry devices have shown good potential to improve the compressor performance without a compromise in map width. In general, variability is achieved by moving walls or rotating vanes to best suit the flow conditions for a given mass flow rate. In order for this to be practically realised, a clearance or gap is required between the stationary and moving parts. This ultimately gives rise to leakage flows within the compressor stage and generally results in a lower achievable efficiency relative to the fixed geometry configuration. A study by the authors on an on/off type variable geometry vaned diffuser identified significant loss mechanisms due to the clearances required for the vanes to slide in to and out of the main flow path. Moreover, the endwall position of the clearance was found to have a marked impact on the compressor stability and peak efficiency. This paper assesses the effect of the clearance depth to width ratio (or aspect ratio) at different endwall positions with the aim of identifying an appropriate geometry and position to approach an optimised design. Steady-state Reynolds-Averaged Navier-Stokes (RANS) simulations were performed using ANSYS CFX at three operating speeds to obtain a broad sense of the effect of the clearance aspect ratio on the compressor performance. It was found that a high value of aspect ratio enabled the formation of large vortical structures in the vaned diffuser. The mixing between the core flow and the vortical structures resulted in significant losses in the vaned diffuser and affected the compressor map width differently depending on the endwall position.
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Cardou, Philippe, Denis Laurendeau, Luc Beaulieu, Luc Be´langer, and Alexandre Carette. "The Dimensional Synthesis of the Linear Delta Robot for a Force-Feedback Device." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28383.

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We perform the dimensional synthesis of a parallel manipulator to be used as a force-feedback device in a virtual reality application for surgeon training in prostate brachytherapy. For such brachytherapy operations, the characteristics of the required workspace point towards the architecture of the linear DELTA robot to be used as the force-feedback device to the surgeon. In this paper, we address the dimensional synthesis of the linear DELTA robot for the prescribed workspace. To this end, we propose the minimum relative kinematic sensitivity as an objective function, a kinematic performance index that is different from most of the commonly used metrics, i.e., manipulability and dexterity. The minimum relative kinematic sensitivity represents the ratio of the minimum to the maximum effect of a unity-bounded set of actuator displacements on the moving-platform pose. These extremum sensitivities are computed independently over the prescribed workspace. Thence, the dimensional synthesis problem consists in finding the robot dimensions that maximize the minimum relative kinematic sensitivity, so it is guaranteed within a narrow interval over the prescribed workspace. This optimization problem is nonconvex, which poses a challenge from the computational point of view. However, because of symmetry in the mechanism and other simplifications, the number of optimization variables is reduced to four. This allows a reasonably fine discretization of the search domain, giving the designers confidence that the ensuing local optimum is close to the global optimum.
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Svoboda, Miroslav, and Martina Sponerová. "RANDOM STRATEGY VERSUS TECHNICAL ANALYSIS STRATEGY IN THE US MARKET." In Fourth International Scientific Conference ITEMA Recent Advances in Information Technology, Tourism, Economics, Management and Agriculture. Association of Economists and Managers of the Balkans, Belgrade, Serbia, 2020. http://dx.doi.org/10.31410/itema.2020.121.

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Random strategy is currently an interesting alternative to traditional trading of financial instruments. The paper builds on existing research into the trading of investment instruments through random strategy and strategies based on technical analysis. The highly liquid USD/CAD currency pair was chosen for the US market research. We analyze five years of data, and in every intraday trading session, only a single position will be opened. Technical analysis strategy uses essential indicators such as Bollinger Bands, relative strength index (RSI), moving averages (MA) and other. Every trading position will have the risk-reward ratio (RRR) 3 to 1. In addition, another trading positions on the USD/CAD currency pair will be opened without technical analysis. The time of entry into position will be indicated randomly with a similar risk-reward ratio (RRR) 3 to 1. The aim of this paper is to assess which of the above strategies is more suitable for the investor. In other words, this paper aims to compare the strategy of technical analysis and the random strategy in intraday trading concerning the profitability of these trades. We expect that a random strategy will be more suitable for the investor in many points.
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Papadopoulos, George, Jason Tyll, Alan Drake, Randy Chue, John D. Williams, and Paul C. Galambos. "Air Entrainment Studies for a Supersonic Micro-Ejector System." In ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/fedsm2008-55220.

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Micro-ejectors offer a unique way of entraining relative large quantities of air without any moving parts, which when mixed with fuel can provide the necessary fuel-air mixture to power a micro-combustion system. Together, the micro-ejector and the micro-combustion systems can make up components of a unique air-breathing propulsion system. Larger scale ejector-based propulsion systems that operate a rocket ejector cycle have been constructed and operated in the past, dating back to the 1960s. Only very recently this same ejector system has been scaled down to the micro-size domain for use in applications other than propulsion, more specifically as a way of entraining and mixing fuel and air for use in micro-combustor applications. The present study involved the use of propane as ejector primary fluid, chosen for its high vapor pressure which allowed us to operate a March 2 nozzle with a throat height of 31 microns under high pressure and thus achieve various degrees of air entrainment based on the area ratio between the primary nozzle and ejector secondary duct. Experimental data showed the performance of the ejector system under the various area ratios studied. The degree of mixing of the primary jet is reviewed, specifically as it pertains to air entrainment performance.
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Potts, Douglas A., Jonathan R. Binns, Hayden Marcollo, and Andrew E. Potts. "Hydrodynamics of Towed Vertical Surface-Piercing Cylinders." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95109.

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Abstract This project investigates a cantilevered cylinder projecting down into the water column moving at high velocity through still water, as is applicable to submarine masts. Surface-piercing cylinders differ from fully submerged cylinders due to the generation of surface wakes and under increasing flow speeds the formation of a ventilated pocket in the lee of the cylinder, both of which grow with increasing velocity, with concomitant effects on the hydrodynamic loading. The relative length of submergence, or immersed aspect ratio (L/D) and end conditions of the cylinder with respect to tip vortex drag effects may also impact the hydrodynamic loads and wake formation. Laboratory testing of surface-piercing cylinders to date has predominantly been confined to characterising the wakes shed from a rigid cylinder cantilevered down into the water from a towing tank carriage, which under certain test conditions will also exhibit significant Vortex-Induced-Vibration (VIV), though not adequately identified and accounted for in its magnification of drag and wake.
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