scholarly journals HUBUNGAN ANTARA NILAI KRITIS DERIVATIF- F^\alpha DENGAN DIMENSI-\gamma DARI SUATU KURVA

2012 ◽  
Vol 4 (1) ◽  
pp. 233
Author(s):  
Supriyadi Wibowo
Keyword(s):  
Critical Point ◽  
Critical Value ◽  
Fractal Set ◽  
Irregular Structure

Continue function that defined on fractal set  is a function which has irregular structure, that can not be an ordinary differentiable on F. In this paper will be explored the correlation between critical point of the derivatif  with dimension-  of a curve. By using the properties of the derivative  , Holder’s continue function in rank of  and dimension , has been obtained the correlation between critical value of derivative and the dimension  of a curve.

scholarly journals Role of thermal field in entanglement harvesting between two accelerated Unruh-DeWitt detectors

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Dipankar Barman ◽  
Subhajit Barman ◽  
Bibhas Ranjan Majhi
Keyword(s):  
Mutual Information ◽  
Critical Point ◽  
Thermal Field ◽  
Narrow Range ◽  
Critical Value ◽  
Critical Values ◽  
Parallel Motion ◽  
Field Temperature ◽  
The Right

Abstract We investigate the effects of field temperature T(f) on the entanglement harvesting between two uniformly accelerated detectors. For their parallel motion, the thermal nature of fields does not produce any entanglement, and therefore, the outcome is the same as the non-thermal situation. On the contrary, T(f) affects entanglement harvesting when the detectors are in anti-parallel motion, i.e., when detectors A and B are in the right and left Rindler wedges, respectively. While for T(f) = 0 entanglement harvesting is possible for all values of A’s acceleration aA, in the presence of temperature, it is possible only within a narrow range of aA. In (1 + 1) dimensions, the range starts from specific values and extends to infinity, and as we increase T(f), the minimum required value of aA for entanglement harvesting increases. Moreover, above a critical value aA = ac harvesting increases as we increase T(f), which is just opposite to the accelerations below it. There are several critical values in (1 + 3) dimensions when they are in different accelerations. Contrary to the single range in (1 + 1) dimensions, here harvesting is possible within several discrete ranges of aA. Interestingly, for equal accelerations, one has a single critical point, with nature quite similar to (1 + 1) dimensional results. We also discuss the dependence of mutual information among these detectors on aA and T(f).

THE BAROMETRIC FORMULA FOR REAL GASES AND ITS APPLICATION NEAR THE CRITICAL POINT

1933 ◽  
Vol 9 (6) ◽  
pp. 637-640 ◽  
Author(s):  
R. Ruedy
Keyword(s):  
Molecular Weight ◽  
Critical Temperature ◽  
Temperature Gradient ◽  
Critical Point ◽  
Van Der Waals ◽  
Critical Value ◽  
Uniform Density ◽  
Van Der Waals Equation ◽  
Other Substances ◽  
Separation Of Isotopes

According to the theory of the continuity of liquid and gaseous states, as expressed for instance in van der Waals' equation, pronounced density differences may exist in a short column of fluid maintained, throughout its length, at the critical temperature. The point in the tube at which the density of the contents has decreased a given percentage from the critical value is the higher the larger the ratio of the critical temperature to molecular weight. For substances like neon the variations are so large that a measurable separation of isotopes may be expected at or near the critical point; for other substances the computed results are at least of the magnitude found by experiment. Also, according to the theory, in order to obtain, at or near the critical point, a column of gas of uniform density a temperature gradient must be allowed to exist along the column.

Polymerisation processes with intrapolymer bonding. II. Stratified processes

1980 ◽  
Vol 12 (1) ◽  
pp. 116-134 ◽  
Author(s):  
P. Whittle
Keyword(s):  
Critical Point ◽  
Reaction Rates ◽  
Critical Value ◽  
Unstable Stratification ◽  
Local Fluctuations ◽  
Polymer Size ◽  
Spatially Homogeneous ◽  
New Feature ◽  
Size And Structure

We consider a polymerisation process stratified in that space is divided into regions, between which migration occurs, but with bonding occurring only within a region. In the case of a process whose specification is spatially homogeneous, criticality (gelation) is then easily detectable as the point at which statistical equidistribution over regions becomes unstable. Stratification does import a new feature, however, in that the equipartition solution can become metastable below criticality; local fluctuations of density can induce ‘gelational collapse’ at a density below the critical value. We derive also detailed results for the inhomogeneous case, both below and above criticality. Statistics of polymer size and structure are also easily determined in the stratified case, although one can locate the critical point without recourse to these. Finally, one can to a large extent treat the case in which inter- and intrapolymer reaction rates differ, and show that such difference affects the onset of metastability rather than of instability.

Approximate Chiral Symmetry, in Medium Pion Mass, and the PI-Abnormal Nuclear State

1997 ◽  
Vol 06 (02) ◽  
pp. 323-330
Author(s):  
Qi-Ren Zhang ◽  
Walter Greiner
Keyword(s):  
Binding Energy ◽  
Critical Point ◽  
Pion Mass ◽  
Critical Density ◽  
Nuclear Data ◽  
Critical Value ◽  
Nuclear State ◽  
Nuclear Model ◽  
Nuclear Density ◽  
Chiral Angle

In an approximately chiral symmetric nuclear model consistent with the empirical nuclear data, we find that the medium pion mass approaches zero when the nuclear density approaches a critical value. At this critical density a chiral rotation occurs. The binding energy pernucleon jumps from about 16 MeV to 85 MeV. Since the chiral angle is not zero, we call this new state the pi-abnormal nuclear state. In this new state the pion mass becomes about 140 MeV again. Then it decreases with further increase of the nuclear density until it reaches another critical point. At this second point, the chiral angle reaches π. The pion mass starts rising. We identify this phase with the Lee–Wick's abnormal nuclear state.

Polymerisation processes with intrapolymer bonding. II. Stratified processes

1980 ◽  
Vol 12 (01) ◽  
pp. 116-134 ◽  
Author(s):  
P. Whittle
Keyword(s):  
Critical Point ◽  
Reaction Rates ◽  
Critical Value ◽  
Unstable Stratification ◽  
Local Fluctuations ◽  
Polymer Size ◽  
Spatially Homogeneous ◽  
New Feature ◽  
Size And Structure

We consider a polymerisation process stratified in that space is divided into regions, between which migration occurs, but with bonding occurring only within a region. In the case of a process whose specification is spatially homogeneous, criticality (gelation) is then easily detectable as the point at which statistical equidistribution over regions becomes unstable. Stratification does import a new feature, however, in that the equipartition solution can become metastable below criticality; local fluctuations of density can induce ‘gelational collapse’ at a density below the critical value. We derive also detailed results for the inhomogeneous case, both below and above criticality. Statistics of polymer size and structure are also easily determined in the stratified case, although one can locate the critical point without recourse to these. Finally, one can to a large extent treat the case in which inter- and intrapolymer reaction rates differ, and show that such difference affects the onset of metastability rather than of instability.

scholarly journals A positive Liapunov exponent for the critical value of an S-unimodal mapping implies uniform hyperbolicity

1988 ◽  
Vol 8 (3) ◽  
pp. 425-435 ◽  
Author(s):  
Tomasz Nowicki
Keyword(s):  
Critical Point ◽  
Critical Value ◽  
Periodic Points ◽  
Hyperbolic Structure ◽  
Liapunov Exponent ◽  
Uniform Hyperbolicity

AbstractA positive Liapunov exponent for the critical value of an S-unimodal mapping implies a positive Liapunov exponent of the backward orbit of the critical point, uniform hyperbolic structure on the set of periodic points and an exponential diminution of the length of the intervals of monotonicity. This is the proof of the Collet-Eckmann conjecture from 1981 in the general case.

scholarly journals STUDI EKSPERIMENTAL PERFORMANCE KAVITASI WATERJET PROPULSI

2021 ◽  
Vol 4 ◽  
pp. 112-120
Author(s):  
Wulfilla M. Rumaherang ◽  
J. Louhenapessy ◽  
Mesak F. Noya ◽  
Cendy S. Tupamahu
Keyword(s):  
Critical Point ◽  
Performance Studies ◽  
Energy Performance ◽  
Critical Value ◽  
Performance Curve ◽  
Test Rig ◽  
Thrust Coefficient ◽  
Working Zone ◽  
Cavitation Performance ◽  
Hydraulic Machines

Cavitation is a complex phenomenon of dynamic processes in hydraulic machines that can cause a decrease in energy performance, vibration and damage the blade surfaces. Analysis of cavitation symptoms in hydraulic machines is carried out through cavitation performance studies, namely the relations between energy parameters. Each hydraulic machine has a critical value on a different cavitation performance curve. Therefore, a study of the effect of cavitation changes is needed to determine the working zone of hydraulic machines without cavitation. In this study, cavitation performance analysis was carried out on a waterjet propulsor model with 5 impeller blades and 7 stator blades using experimental methods. The cavitation coefficient was varied at σ = 2.25 to 0.25 by setting and controlling the inlet pressure on the cavitation test rig. The critical point value will be observed at the point where the thrust coefficient decreased to 3.28%.  The results showed that cavitation begins at σ = 1, the critical point is obtained at σ = 0.75. From these studies, we find that waterjet must be operated at conditions where is σ > 0.75.

scholarly journals THEORY OF THE THREE-GROUP EVOLUTIONARY MINORITY GAME

2004 ◽  
Vol 18 (17n19) ◽  
pp. 2387-2393 ◽  
Author(s):  
KAN CHEN ◽  
BING-HONG WANG ◽  
BAOSHENG YUAN
Keyword(s):  
Numerical Simulations ◽  
Critical Point ◽  
Critical Value ◽  
Minority Game ◽  
Adiabatic Theory

Based on the general adiabatic theory for the evolutionary minority game (EMG) that we proposed earlier,1 we perform a detail analysis of the EMG limited to three groups of agents. We derive a formula for the critical point of the transition from segregation (into opposing groups) to clustering (towards cautious behaviors). Particular to the three-group EMG, the strategy switching in the "extreme" group does not occur at every losing step and is strongly intermittent. This leads to an correction to the critical value of the number of agents at the transition, Nc. Our expression for Nc is in agreement with the results obtained from our numerical simulations.

scholarly journals Analisis Critical Root Value pada Data Nonstasioner

CAUCHY ◽  
2011 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Abdul Aziz
Keyword(s):  
Time Series ◽  
Random Walk ◽  
Critical Point ◽  
Unit Root ◽  
Unit Root Test ◽  
Critical Value ◽  
T Test ◽  
Random Walk Process ◽  
T Distribution

<div class="standard"><a id="magicparlabel-2325">A stationery process can be done t-test, on the contrary at non stationery process t-test cannot be done again because critical value of this process isn’t t-distribution. At this research, we will do simulation of time series AR(1) data in four non stationery models and doing unit root test to know critical value at ttest of non stationery process. From the research is yielded that distribution of critical point for t-test of non stationery process comes near to normal with restating simulation of random walk process which ever greater. Result of acquirement of this critical point has come near to result of Dickey-Fuller Test. From this research has been obtained critical point for third case which has not available at tables result of Dickey-Fuller Test. </a></div>

The Critical Point Drying Method Applied to Scanning Electron Microscopy of L-929 Cells

1970 ◽  
Vol 28 ◽  
pp. 278-279
Author(s):  
Charles TurnbiLL ◽  
Delbert E. Philpott
Keyword(s):  
Electron Microscopy ◽  
Carbon Dioxide ◽  
Surface Tension ◽  
Critical Point ◽  
Freeze Drying ◽  
Attractive Alternative ◽  
Crystal Formation ◽  
Critical Point Drying ◽  
Time Required ◽  
Scanning Electron

The advent of the scanning electron microscope (SCEM) has renewed interest in preparing specimens by avoiding the forces of surface tension. The present method of freeze drying by Boyde and Barger (1969) and Small and Marszalek (1969) does prevent surface tension but ice crystal formation and time required for pumping out the specimen to dryness has discouraged us. We believe an attractive alternative to freeze drying is the critical point method originated by Anderson (1951; for electron microscopy. He avoided surface tension effects during drying by first exchanging the specimen water with alcohol, amy L acetate and then with carbon dioxide. He then selected a specific temperature (36.5°C) and pressure (72 Atm.) at which carbon dioxide would pass from the liquid to the gaseous phase without the effect of surface tension This combination of temperature and, pressure is known as the "critical point" of the Liquid.

Sign in / Sign up

Export Citation Format

Share Document