Return method

2009 ◽  
pp. 187-221
Author(s):  
Jean-Michel Coron
Keyword(s):  
Return Method

scholarly journals Marking and return method for evaluating the effects of stocking larval vendace, Coregonus albula (L.), into Lake Wigry in 2000-2001

2011 ◽  
Vol 19 (4) ◽  
Author(s):  
Paweł Poczyczyński ◽  
Krzysztof Kozłowski ◽  
Jacek Kozłowski ◽  
Andrzej Martyniak
Keyword(s):  
Coregonus Albula ◽  
Return Method

Application of the Radial Return Method to Compute Stress Increments From Mroz’s Hardening Rule

2000 ◽  
Vol 123 (4) ◽  
pp. 398-402 ◽  
Author(s):  
Sing C. Tang ◽  
Z. Cedric Xia ◽  
Feng Ren
Keyword(s):  
Metal Forming ◽  
Computing Time ◽  
Isotropic Hardening ◽  
Stress Increment ◽  
Anisotropic Hardening ◽  
Forming Process ◽  
Shell Elements ◽  
Hardening Rule ◽  
Metal Forming Process ◽  
Return Method

It is well known in the literature that the isotropic hardening rule in plasticity is not realistic for handling plastic deformation in a simulation of a full sheet-metal forming process including springback. An anisotropic hardening rule proposed by Mroz is more realistic. For an accurate computation of the stress increment for a given strain increment by using Mroz’s rule, the conventional subinterval integration takes excessive computing time. This paper proposes the radial return method to compute such stress increment for saving computing time. Two numerical examples show the efficiency of the proposed method. Even for a sheet model with more than 10,000 thin shell elements, the radial return method takes only 40 percent of the overall computing time by the subinterval integration.

Thinking about Jointly Preventing the “Color Revolution” by China and Russia

2021 ◽  
pp. 100
Author(s):  
chensheng wang
Keyword(s):  
International System ◽  
Low Cost ◽  
The United States ◽  
Regional Security ◽  
Healthy Development ◽  
Regional Coordination ◽  
Color Revolution ◽  
Return Method ◽  
The Stability ◽  
Surrounding Areas

The color revolution, which is a “low-cost and high-return” method in regime change, has become the main mean and priority option for America to subvert dissident regimes. In recent years, with the raising strength of containing and suppressing between China with Russia by the United States, America has tried its best to plan “color revolution” not only around China and Russia, but also within the borders of the two countries. China and Russia have become the key target of America in implementing the “color revolution”, however, the situation of the two countries to prevent the “color revolution” is particularly urgent. The “color revolution” not only disrupts the balance of the international system and regional security, but also seriously affects the stability of the country's political power and the healthy development of the economy. In view of this, it is now necessary for China and Russia to work together to prevent “color revolution”. Regarding the new changes, methods changed from non-violent to violent me, more advanced organizational methods, the younger generation of the participants, and changes in manifestations by the “color revolution”, as well as the underlying causes of the “color revolution”, China and Russia should have uindividualized strategies. China and Russia can strengthen cooperation in different areas, such as politics, economy, culture, ideological education, and regional coordination. China and Russia should take advantages of their respective experiences in dealing with “color revolution”, strengthen sharing and communicating experience with other countries in the region, and jointly build a barrier to prevent “color revolution” and protect the security and stability in China and Russia and the surrounding areas.

scholarly journals On the uniform controllability for a family of non-viscous and viscous Burgers-α systems

2021 ◽  
Author(s):  
Diego Araujo de Souza ◽  
Raul K. C. Araujo ◽  
Enrique Fernández-Cara
Keyword(s):  
Burgers Equation ◽  
Wave Length ◽  
Exact Controllability ◽  
Convective Velocity ◽  
Distributed Controls ◽  
Target States ◽  
Controllability Property ◽  
Return Method ◽  
Uniform Controllability ◽  
Controllability Result

In this paper we study the global controllability of families of the so called non-viscous and viscous Burgers-α systems by using boundary and space independent distributed controls. In these equations, the usual convective velocity of the Burgers equation is replaced by a regularized velocity, induced by a Helmholtz filtered of characteristic wave-length α. First, we prove a global exact controllability result (uniform with respect to α) for the non-viscous Burgers-α system, using the return method and a fixed-point argument. Then, the global uniform exact controllability to constant states is deduced for the viscous equations. To this purpose, we first prove a local exact controllability property and, then, we establish a global approximate controllability result for smooth initial and target states.

scholarly journals Evaluating bull fertility based on non-return method

2012 ◽  
Vol 66 (1-2) ◽  
pp. 27-40
Author(s):  
Igor Prka ◽  
Dragan Vukovic ◽  
Stevan Perkovic
Keyword(s):  
Semen Quality ◽  
Sperm Quality ◽  
Quality Parameters ◽  
Semen Parameters ◽  
Service Period ◽  
Microscopic Evaluation ◽  
Live Sperm ◽  
Return Method ◽  
The Impact ◽  
First Time

In order to evaluate the results of reproductive cows and heifers, different parameters of fertility are used, such as the service period, insemination index, intercalving time and others, and of the breeding bulls the values obtained through non-return. An ejaculate is taken up for further processing by veterinary centres only provided it meets the prescribed quality parameters. Rating semen parameters includes a macroscopic (volume, colour, consistency, smell and pH) and a microscopic evaluation (mobility, density, percentage of live sperm and abnormal and damaged sperm). In addition to sperm quality and the fertility of the female animal, the results of the non-return method are also influenced by a number of exogenous causes (season, age, race, insemination techniques) that have no small impact on the end result of insemination - pregnancy. In order to obtain more objective results of the fertility of bulls the following tasks were undertaken, namely: 1. to calculate with the non-return method the fertility of bulls in over 10,000 cows inseminated for the first time during a period of 6 years; and 2. to analyze the impact of semen quality, season, age of cow and bull, and the bull breed on the results of fertility.

scholarly journals MEASURING HURST EXPONENTS WITH THE FIRST RETURN METHOD

Fractals ◽  
1994 ◽  
Vol 02 (04) ◽  
pp. 527-533 ◽  
Author(s):  
ALEX HANSEN ◽  
THOR ENGØY ◽  
KNUT JØRGEN MÅLØY
Keyword(s):  
Fourier Analysis ◽  
Efficient Method ◽  
Hurst Exponent ◽  
Corrections To Scaling ◽  
Scaling Exponents ◽  
Return Method ◽  
Hurst Exponents

The First Return method has proven to be an efficient method for determining the Hurst exponent, H, of self-affine surfaces. We discuss its foundations and some corrections to scaling which must be taken into account for an adequate estimation of H. Using this method, we analyze a set of artificially generated curves with known Hurst exponent and compare the result with Fourier analysis. We also discuss the case where the surface to be analyzed has a curved bias with a maximum or minimum. In this case, the relation between the scaling exponents associated with the first-return histograms and the Hurst exponent H is different from the unbiased case.

scholarly journals Investment Appraisal At Imperfect Capital Markets

2011 ◽  
Vol 6 (9) ◽  
Author(s):  
Peter Schuster
Keyword(s):  
Decision Making ◽  
Interest Rates ◽  
Capital Markets ◽  
Net Present Value ◽  
Time Value Of Money ◽  
Investment Projects ◽  
Investment Appraisal ◽  
Imperfect Capital Markets ◽  
Return Method ◽  
Value Of Money

Investment decisions are of vital importance to all companies. Thus, effective appraisal methods are most important tools to support the decision-making. Among the most popular methods are the Net Present Value Method, the Internal Rate of Return Method and the Annuity Method, which explicitly consider the time value of money and can be characterized by the assumption of a uniform rate and are connected with the assumption of a perfect capital market.Aiming at a decision-making process closer to real business life we describe an investment appraisal method that assumes different credit and debtor interest rates, i.e., that is usable in imperfect capital markets. We exemplify investment appraisal in this market form with a method which visualizes any financial implications in an environment with a high number of different credit and debt interest rates, borrowing lines and other restrictions. The usage of this method is shown at examples and the appraisal of single investment projects and the comparison of mutually exclusive projects are described.

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