scholarly journals The Correlation Constant of a Field

2018 ◽  
Vol 65 (03) ◽  
pp. 1
Author(s):  
June Huh
Keyword(s):  
Correlation Constant

Reliability of estimation of metabolic levels from respiratory frequency

1964 ◽  
Vol 19 (3) ◽  
pp. 497-502 ◽  
Author(s):  
N. L. Ramanathan
Keyword(s):  
Energy Consumption ◽  
Respiratory Rate ◽  
Energy Cost ◽  
Energy Levels ◽  
Pulmonary Ventilation ◽  
Respiratory Frequency ◽  
Breathing Rate ◽  
Output Measurement ◽  
First Approximation ◽  
Correlation Constant

The reliability of estimating the physiological energy cost from the respiratory frequency has been tested from 114 exercise experiments on 11 volunteers. A correlation according to E (kcal/min) = -3.06 + 0.198 R (no/min) was obtained between energy consumption and breathing rate. This regression was highly significant (P < 0.01) with a correlation constant of 0.93 and standard error of only 0.46 kcal/min. The convenience of the method in comparison with pulse rate and pulmonary ventilation methods which have similar correlation and accuracy, have been discussed. In states of low energy metabolism and also in the performance of severe muscular tasks, when oxygen debt may occur, the present relation may not strictly apply. Breath amplitude also affects energy levels, but it seems to bear no relation to the effect of respiratory frequency. Techniques for observing respiratory frequencies accurately and for deriving the best estimate of energy cost under field conditions are described. Determinations of energy consumption to the first approximation are readily achieved by this method. exercise; respiratory rate and energy expenditure in man pulmonary ventilation and respiratory rate; work output measurement Submitted on May 21, 1963

scholarly journals LONGSHORE TRANSPORT EVALUATIONS AT A DETACHED BREAKWATER

1980 ◽  
Vol 1 (17) ◽  
pp. 86 ◽  
Author(s):  
R.O. Bruno ◽  
R.G. Dean ◽  
C.G. Gable
Keyword(s):  
Sediment Transport ◽  
Engineering Research ◽  
Pressure Transducers ◽  
Longshore Sediment Transport ◽  
Longshore Transport ◽  
Wave Energy Flux ◽  
Correlation Constant ◽  
Wave Induced ◽  
The Relationship ◽  
The Waves

A field experiment was conducted by the Coastal Engineering Research Center (CERC) to develop correlations between wave characteristics and longshore sediment transport. The waves were measured by two near-bottom mounted pressure transducers and the average longshore sediment transport rates were determined from sequential volumetric surveys behind an offshore breakwater which was regarded as a total trap. The data analyzed herein encompass a period of nine months during which a total accumulation of 675,000 m3 occurred as documented by eight surveys. Spectral analyses of the wave data were conducted and yielded one direction per frequency. The correlations include immersed weight sediment transport rate, I, versus (1) longshore component of wave energy flux at breaking, P&Sf and (2) the onshore flux of the longshore component of wave-induced momentum, S „. The most widely used correlation constant, K, in the relationship I = KPjig is 0,77. The best-fit values found from the data were K = 0.65 and 0.92 for linear and log best-fits, respectively, as based on the p£s values directed toward the trap. The corresponding values of KA (dimensional) relating I and Sxv are 4.98 m/s and 6.37 m/s, respectively. One feature of this type of trap is the potential for overtrapping if the waves are directed nearly normal to shore.

scholarly journals LONGSHORE TRANSPORT DETERMINED BY AN EFFICIENT TRAP

1982 ◽  
Vol 1 (18) ◽  
pp. 60 ◽  
Author(s):  
R.G. Dean ◽  
E.P. Berek ◽  
C.G. Gable ◽  
R.J. Seymour
Keyword(s):  
Sediment Transport ◽  
Field Component ◽  
Santa Barbara ◽  
Wave Characteristics ◽  
Nearshore Sediment Transport ◽  
Longshore Sediment Transport ◽  
Longshore Transport ◽  
Correlation Constant ◽  
The Relationship ◽  
Best Fit

The Nearshore Sediment Transport Study (NSTS), sponsored by the National Sea Grant Office included a field component to quantify the total longshore sediment transport relationship. This component was conducted at Santa Barbara, California and encompassed a period of eighteen months during which ten surveys were conducted. To date, eight of these surveys have been analyzed, yielding seven intersurvey periods. A total of 288,600 m3 of net sediment transport was documented by these eight surveys. The wave characteristics are based on one of two Sxy gages located in a water depth of 7 m. The most widely used correlation constant, K, in the relationship I = KP, is 0.77. The values found from the data were 0.93 and 1.23 for linear and log best-fit values, respectively. The corresponding values of K4 relating I and S are 2.60 and 2.63 m/s, respectively.

scholarly journals Determination of Performance Analysis for an Underground Colliery Utilizing Mechanized Production System

2019 ◽  
Vol 10 (2) ◽  
pp. 19-25
Author(s):  
Ali Ekrem Arıtan ◽  
Cem Şensöğüt
Keyword(s):  
Performance Analysis ◽  
Production Performance ◽  
Business Organizations ◽  
Performance Indexes ◽  
Lignite Mine ◽  
Efficiency Parameter ◽  
Correlation Constant ◽  
And Performance ◽  
Efficiency And Productivity ◽  
Chain Conveyor

Performance is one of the most important parameters for today’s business organizations. An organizationthat is low on performance, no matter how much high quality products they have, cannot take the share they desirefrom the market. It is the inevitable result for organizations with low performances to lose money and get closed down.Nowadays performance is measured in many ways. In this work; the production performance of Ömerler Colliery,which is the only government controlled mechanized lignite mine authorized under the Western Lignite Corporation(WLC) and the factors that caused performance decrease has been determined. In order to gain performancemeasurements; effectiveness, efficiency and productivity criteria have been used and performance indexes have beenacquired. As the result of the performance analysis, it is understood that there has been malfunctions with; in order; beltconveyor, chain conveyor, shearer and fortification that has been effective in the decrease of performance. Performanceindexes, which are barely derived from the multiplication of performance parameters, are examined and it is deductedthat the highest relation is achieved for the efficiency parameter with a correlation constant (r) of 0.9489 and a certaintyconstant (R²) of 0.9005 while the lowest relation is obtained for the efficiency parameter with a correlation constant (r)of 0.4621 and certainty constant (R²) 0.2135. With this acquired result it has been determined that by only measuringeffectiveness, performance detection cannot be made.

scholarly journals Prediction of amphipathic helix – membrane interactions with Rosetta

2020 ◽  
Author(s):  
Alican Gulsevin ◽  
Jens Meiler
Keyword(s):  
Membrane Proteins ◽  
Md Simulations ◽  
Integral Membrane Proteins ◽  
Grid Search ◽  
Amphipathic Helix ◽  
Computational Tool ◽  
Amphipathic Helices ◽  
Peripheral Membrane Proteins ◽  
Naturally Occurring ◽  
Correlation Constant

AbstractAmphipathic helices have hydrophobic and hydrophilic/charged residues situated on opposite faces of the helix. They can anchor peripheral membrane proteins to the membrane, be attached to integral membrane proteins, or exist as independent peptides. Despite the widespread presence of membrane-interacting amphipathic helices, there is no computational tool within Rosetta to model their interactions with membranes. In order to address this need, we developed the AmphiScan protocol with PyRosetta, which runs a grid search to find the most favorable position of an amphipathic helix with respect to the membrane. The performance of the algorithm was tested in benchmarks with six engineered and 44 naturally occurring amphipathic helices using membrane coordinates from the OPM and PDBTM databases, OREMPRO server, and MD simulations as reference. The AmphiScan protocol predicted the coordinates of amphipathic helices within less than 3Å of the reference structures and identified membrane-embedded residues with a Matthews Correlation Constant (MCC) up to 0.61. Overall, AmphiScan stands as fast, accurate, and highly-customizable protocol that can be pipelined with other Rosetta and Python applications.

scholarly journals Investigation of the inhibitory-bactericidal effect of amidoamine-based inorganic complexes against microbiological and atmospheric corrosion

2020 ◽  
Vol 22 (3) ◽  
pp. 29-37
Author(s):  
Y.J. Aghazada ◽  
V.M. Abbasov ◽  
N.I. Mursalov ◽  
S.E. Abdullayev ◽  
U.J. Yolchuyeva
Keyword(s):  
Metal Surface ◽  
Atmospheric Corrosion ◽  
Isopropyl Alcohol ◽  
Bactericidal Effect ◽  
Corrosion Process ◽  
Inorganic Complexes ◽  
Correlation Constant ◽  
Reducing Bacteria ◽  
Kinetics Of ◽  
Petroleum Acid

AbstractIn the process, inorganic complexes of amidoamines obtained from the interaction of natural petroleum acid and oleic acids with diethylenetriamine have been developed and their effectiveness as inhibitor-bactericides has been investigated. The effect of the synthesized reagents on the kinetics of the corrosion process of steel and the activity of sulphate-reducing bacteria in 3% NaCl solution saturated with CO2 and in the biphasic water–isopropyl alcohol medium with H2S dissolved has been analyzed. The thermodynamic and kinetic parameters of the corrosion process were calculated. The adsorption of the complexes was investigated using the Langmuir isotherm and the correlation constant was determined. State of the metal surface was investigated by SEM method in CO2 and H2S media, with and without inhibitors, and the metal surface contact of complexes was studied by computer molecular simulation.

scholarly journals Removal of Uranium(VI) from Aqueous Solution by Iron Nanoparticles Synthesized from Testa Extract of Annacardium occidentale: A Fluorimetric Study

2019 ◽  
Vol 32 (2) ◽  
pp. 271-275 ◽  
Author(s):  
Ch Chandra ◽  
Fahmida Khan ◽  
Sonalika Agrawal ◽  
Vipin Kumar Soni
Keyword(s):  
Adsorption Isotherm ◽  
Cost Effective ◽  
Xrd Analysis ◽  
Ion Concentration ◽  
Zerovalent Iron ◽  
Whole Process ◽  
Freundlich Adsorption Isotherm ◽  
Correlation Constant ◽  
Uv Visible ◽  
Synthesis Approach

Uranium(VI) is one of the most harmful and carcinogenic ion if present in water above its permissible limit. The main objective of this study is removal of uranium(VI) from water sample using nano zerovalent iron prepared by green synthesis approach with the help of Annacardium occidentale testa extract in which the whole process is completely environmental friendly and cost effective and does not involve any hazardous chemicals. Size of AO-Fe nanoparticle is characterized through UV-visible spectroscopy and FTIR analysis. Morphology of nanoparticle is studied using SEM-EDS and XRD analysis. The adsorption capacity of AO-Fe nanoparticle is studied using batch experiments. Effect of different parameters are then analyzed such as pH, adsorbent dosage, contact time and U(VI) ion concentration. Adsorption isotherm is also studied using Langmuir and Freundlich adsorption isotherm where correlation constant R2 is about 0.99.

scholarly journals Multistage Tree Model for Crime Dataset in Iraq

2019 ◽  
pp. 1-8
Keyword(s):  
Partial Correlation ◽  
Rank Correlation ◽  
Correlation Measurement ◽  
Three Dimensions ◽  
Conditional Correlation ◽  
Tree Model ◽  
Tree Structures ◽  
Low Dimensionality ◽  
Correlation Constant ◽  
Vine Copula

This research deals with the using of correlation measurement that leads to describing the degree of relationship between variables, quantities or qualities. Therefore, we implement a simple correlation coefficient and conditional correlation to introduce a regular vine copula, which gives different tree structures. Two methods to select tree structures are introduced. The first one adopts the Partial Correlation Constant (PCC) with constant, while the second method depends on the estimation of summation pathway. The proposed method makes modification on Diβmann’s algorithm to increase the dependency on each level of the tree using rank correlation measurement. Both methods are adopted to construct the best model with more than three dimensions based on the available label crime dataset in Iraq. The selected model is used for selecting the suitable tree model and generating a decision with the low dimensionality of variables.

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