Separation-Transition Effects on a Cylinder with a Screen

A large number of shot boundary detection, or equivalently, transition detection techniques have been developed in recent years. They all can be classified based on a few core concepts underlying the different detection schemes. This survey emphasizes those different core concepts underlying the different detection schemes for the three most widely used video transition effects: hard cuts, fades and dissolves. Representative of each concept one or a few very sound and thoroughly tested approaches are present in detail, while others are just listed. Whenever reliable performance numbers could be found in the literature, they are mentioned. Guidelines for practitioners in video processing are also given.

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Transition Effects of Cosmic Rays in the Atmosphere

Physical Review ◽

10.1103/physrev.54.317 ◽

1938 ◽

Vol 54 (5) ◽

pp. 317-320 ◽

Cited By ~ 38

Author(s):

R. Serber

Keyword(s):

Cosmic Rays ◽

Transition Effects

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A Replication of a Quasi-Experimental Approach to Estimating Middle School Structural Transition Effects on Student Learning Trajectories

Educational Policy ◽

10.1177/0895904820987797 ◽

2021 ◽

pp. 089590482098779

Author(s):

Allison Atteberry ◽

Robbee Wedow ◽

Nathan J. Cook ◽

Andrew McEachin

Keyword(s):

Middle School ◽

Structural Transition ◽

Experimental Approach ◽

Scientific Practice ◽

School Transitions ◽

Replication Studies ◽

Quasi Experimental ◽

Transition Effects ◽

Causal Impact ◽

Achievement Trajectories

Using a dataset that includes over 17 million students from across all 50 states, we estimate the causal impact of making structural transitions into middle school (in grades 4, 5, 6, or 7) on student math and reading achievement trajectories. This dataset provides an ideal opportunity to engage in the valuable scientific practice of conducting replication studies. Prior research on the impacts of middle school transitions is of high quality and rests on a strong causal warrant, but the study settings vary greatly and use data from a prior decade. We conduct a replication (i.e., using the same methods on different data) using larger, broader, and more recent data. We extend prior analyses in ways that may further strengthen the causal warrant. Finally, we explore heterogeneity of effects across subgroups and states, which may help reconcile differences in the magnitude of estimated effects across studies.

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Realistic hardening-to-softening transition effects of metals over the finite strain range up to failure

Multidiscipline Modeling in Materials and Structures ◽

10.1108/mmms-05-2020-0099 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Zi-Han Xu ◽

Lin Zhan ◽

Si-Yu Wang ◽

Hui-Feng Xi ◽

Heng Xiao

Keyword(s):

Finite Strain ◽

Plastic Work ◽

Uniaxial Tensile ◽

Uniaxial Tensile Test ◽

Trial And Error ◽

Content Type ◽

Transition Effects ◽

Iterative Procedures ◽

First Time ◽

Hardening And Softening

PurposeA new approach is proposed toward accurately matching any given realistic hardening and softening data from uniaxial tensile test up to failure and moreover, toward bypassing usual tedious implicit trial-and-error iterative procedures in identifying numerous unknown parameters.Design/methodology/approachFinite strain response features of metals with realistic hardening-to-softening transition effects up to eventual failure are studied for the first time based on the self-consistent elastoplastic J2-flow model with the logarithmic stress rate. As contrasted with usual approximate and incomplete treatments merely considering certain particular types of hardening effects such as power type hardening, here a novel and explicit approach is proposed to obtain a complete form of the plastic-work-dependent yield strength over the whole hardening and softening range.FindingsA new multi-axial evolution equation for both hardening and softening effects is established in an explicit form. Complete results for the purpose of model validation and prediction are presented for the finite strain responses of monotonic uniaxial stretching up to failure.Originality/valueNew finite strain elastoplastic equations are established with a new history-dependent variable equivalently in place of the usual plastic work. With these equations, a unified and accurate simulation of both gardening and softening effects up to failure is achieved for the first time in an explicit sense without involving usual tedious implicit trial-and-error iterative procedures.

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Organic Transition Effects on Soilborne Diseases of Soybean and Populations of Pseudomonadaceae

Agronomy Journal ◽

10.2134/agronj14.0318 ◽

2015 ◽

Vol 107 (3) ◽

pp. 1087-1097 ◽

Cited By ~ 6

Author(s):

Shin-Yi-Lee Marzano ◽

Maria B. Villamil ◽

Michelle M. Wander ◽

Carmen M. Ugarte ◽

Liwei Wen ◽

...

Keyword(s):

Soilborne Diseases ◽

Transition Effects ◽

Organic Transition

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On the Simulation of Unsteady Turbulence and Transition Effects in a Multistage Low Pressure Turbine: Part III — Comparison of Harmonic Balance and Full Wheel Simulation

Volume 2C: Turbomachinery ◽

10.1115/gt2018-76749 ◽

2018 ◽

Author(s):

Edmund Kügeler ◽

Georg Geiser ◽

Jens Wellner ◽

Anton Weber ◽

Anselm Moors

Keyword(s):

Harmonic Balance ◽

Leading Edge ◽

Suction Side ◽

Low Pressure ◽

Transition Model ◽

Higher Harmonics ◽

Low Pressure Turbine ◽

The Third ◽

Transition Effects ◽

Transition Models

This is the third part of a series of three papers on the simulation of turbulence and transition effects in a multistage low pressure turbine. The third part of the series deals with the detailed comparison of the Harmonic Balance calculations with the full wheel simulations and measurements for the two-stage low-pressure turbine. The Harmonic Balance simulations were carried out in two confingurations, either using only the 0th harmonic in the turbulence and transition model or additional in all harmonics. The same Menter SST two-equation k–ω turbulence model along with Menter and Langtrys two-equation γ–Reθ transition model is used in the Harmonic Balance simulation as in the full wheel simulations. The measurements on the second stator ofthe low-pressure turbine have been carried out separately for downstream and upstream influences. Thus, a dedicated comparison of the downstream and upstream influences of the flow to the second stator is possible. In the Harmonic Balance calculations, the influences of the not directly adjacent blade, i.e. the first stator, were also included in the second stator In the first analysis, however, it was shown that the consistency with the full wheel configuration and the measurement in this case was not as good as expected. From the analysis ofthe full wheel simulation, we found that there is a considerable variation in the order ofmagnitude ofthe unsteady values in the second stator. In a further deeper consideration of the configuration, it is found that modes are reflected in upstream rows and influences the flow in the second stator. After the integration of these modes into the Harmonic Balance calculations, a much better agreement was reached with results ofthe full wheel simulation and the measurements. The second stator has a laminar region on the suction side starting at the leading edge and then transition takes place via a separation or in bypass mode, depending on the particular blade viewed in the circumferential direction. In the area oftransition, the clear difference between the calculations without and with consideration ofthe higher harmonics in the turbulence and transition models can be clearly seen. The consideration ofthe higher harmonics in the turbulence and transition models results an improvement in the consistency.

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