Ordering single‐valued neutrosophic numbers based on flexibility parameters and its reasonable properties

2021 ◽  
Author(s):  
Rituparna Chutia ◽  
Mridul K. Gogoi ◽  
M. Adabitabar Firozja ◽  
Florentin Smarandache
Keyword(s):  
Flexibility Parameters

Evaluation of Flexibility Optimization for Thermal Power Plants

2018 ◽  
Author(s):  
Moritz Hübel ◽  
Jens Hinrich Prause ◽  
Conrad Gierow ◽  
Egon Hassel ◽  
Raphael Wittenburg ◽  
...  
Keyword(s):  
Power Plant ◽  
Electricity Market ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Economic Effects ◽  
Economic Evaluations ◽  
Start Ups ◽  
Flexibility Parameters ◽  
Operational Schedule

The increasing share of fluctuating renewable energy sources leads to changing requirements for conventional power plants. The changing characteristics of the residual load requires the conventional fleet to operate with higher load gradients, lower minimum load at improved efficiency levels as well as faster start-ups and provision of ancillary services. Despite the requirements from the electricity market, the value of improving those flexibility parameters is hard to evaluate for power plant operators. In order to quantify the additional benefit that can be achieved by improving flexibility parameters on a certain power plant in a changing market environment, an adjustable load dispatch model has developed for that purpose. Using past electricity market data, the model is validated for typical coal and a typical gas fired power plants by reproducing their operational schedule. In the next step, the model is used to apply parameter changes to the power plants specifications and economic effects are demonstrated. General statements are derived on which flexibility parameter needs to be improved on each power plant type. Furthermore, specific economic evaluations are shown for the reference power plants in order to present the ability of the developed tool to support investment decisions for modernization projects of existing power plants.

Sensitivity of Flexibility Monitoring of Offshore Jacket Platforms

1986 ◽  
Vol 108 (1) ◽  
pp. 72-76 ◽  
Author(s):  
S. Rubin ◽  
R. N. Coppolino
Keyword(s):  
Field Testing ◽  
Great Promise ◽  
Ambient Vibrations ◽  
Structural Redundancy ◽  
Sensitivity Assessment ◽  
Wide Range ◽  
Flexibility Parameters

Flexibility monitoring is a vibration-based method for simplifying the detection of major underwater damage on offshore jacket platforms. Ambient vibrations are detected at each of the underwater framing levels relative to abovewater vibration in the fundamental sway and torsional modes. Derived are flexibility parameters which relate to the shear flexibilities of each framing bay and of the foundation. Great promise has been shown by laboratory and field testing. This paper presents a comprehensive sensitivity assessment for severance of diagonal members over a wide range of structural redundancy for generic platform configurations.

A comparison of single and incremental impact approaches for producing experimental thoracolumbar burst fractures

2007 ◽  
Vol 7 (2) ◽  
pp. 199-204 ◽  
Author(s):  
Xiang-Yang Wang ◽  
Li-Yang Dai ◽  
Hua-Zi Xu ◽  
Yong-Long Chi
Keyword(s):  
Burst Fracture ◽  
Axial Rotation ◽  
Similar Degree ◽  
Thoracolumbar Burst Fractures ◽  
Single Impact ◽  
Burst Fractures ◽  
Flexion Extension ◽  
The Impact ◽  
Flexibility Parameters

Object. Experimental burst fracture models are often developed by using either single or incremental impacts. In both protocols, the weight-drop technique produces the impact. However, to the authors' knowledge in no study have researchers attempted to compare the equivalence of the spine burst fracture produced using the different impact protocols. This study was performed to investigate whether the single and incremental trauma approaches produce equivalent degrees of severity in thoracolumbar burst fractures. Methods. Twenty bovine thoracolumbar spines comprising three vertebrae were divided evenly into the single impact and incremental impact groups. The specimens in the incremental impact group were subjected to three axial compressive impacts of increasing energy (78.4, 107.8, and 137.2 J), whereas specimens in the other group were subjected to a single impact (137.2 J). Before and after the final trauma, multidirectional flexibility of each specimen was measured under flexion/extension, right/left lateral bending, and right/left axial rotation, thus quantifying the instability of the fracture. The flexibility parameters were then compared between the two groups. Results. A significant increase in flexibility parameters was found after the final trauma in both groups, indicating the instability of the spine (p < 0.01). No significant differences in flexibility parameters were observed in either intact status or injured status between the two groups (p > 0.05). Conclusions. In this study the authors have confirmed that the single and incremental impact protocols produced a similar degree of severity in producing an in vitro bovine burst fracture. The results of this study support the use of the incremental impact protocol in future experimental biomechanical studies.

scholarly journals Computing flexibility parameters and modelling the structure of poly(4-methylpentene-1)

2019 ◽  
pp. 96-106
Author(s):  
O.I. Romanko ◽  
G.Yu. Lomakina
Keyword(s):  
Phase Transitions ◽  
Chemical Bond ◽  
Packing Density ◽  
Repeat Unit ◽  
Thermodynamic Characteristics ◽  
Structural Transformations ◽  
Kuhn Segment ◽  
Wide Scope ◽  
Flexible Polymer ◽  
Flexibility Parameters

We used the method of increments to compute thermodynamic characteristics of poly(4-methylpentene-1), specifically the Kuhn segment as a parameter of flexibility and packing density. In order to carry out the computations, we composed equations that take into account every atom in the repeat unit and the chemical bond types found in the macromolecule. The values obtained made it possible to classify poly(4-methylpentene-1) as a flexible polymer featuring high free volume. We consider possible structural transformation models for the polymer when the temperature varies in the 293...773 K range. Comparing model representations to structural transformations investigated experimentally explains a wide scope of experimentally detected relaxation and phase transitions.

The influence of anthropometrical and flexibility parameters on the results of breaststroke swimming

2005 ◽  
Vol 63 (2) ◽  
pp. 213-219 ◽  
Author(s):  
Gennadi Jagomägi ◽  
Toivo Jürimäe
Keyword(s):  
Flexibility Parameters

scholarly journals Rotation Capacity of Bolted Flush End-Plate Stiffened Beam-to-Column Connection

2017 ◽  
Vol 25 (2) ◽  
pp. 173-184
Author(s):  
Krzysztof Ostrowski ◽  
Aleksander Kozłowski
Keyword(s):  
General Procedure ◽  
Framed Structures ◽  
End Plate ◽  
Rotation Capacity ◽  
Joint Influence ◽  
Current Design ◽  
Plastic Rotation Capacity ◽  
Rigid Joints ◽  
Flexibility Parameters

Abstract One of the flexibility parameters of semi-rigid joints is rotation capacity. Plastic rotation capacity is especially important in plastic design of framed structures. Current design codes, including Eurocode 3, do not posses procedures enabling designers to obtain value of rotation capacity. In the paper the calculation procedure of the rotation capacity for stiffened bolted flush end-plate beam-to-column connections has been proposed. Theory of experiment design was applied with the use of Hartley’s PS/DS-P:Ha3 plan. The analysis was performed with the use of finite element method (ANSYS), based on the numerical experiment plan. The determination of maximal rotation angle was carried out with the use of regression analysis. The main variables analyzed in parametric study were: pitch of the bolt “w” (120-180 mm), the distance between the bolt axis and the beam upper edge cg1 (50-90 mm) and the thickness of the end-plate tp (10-20 mm). Power function was proposed to describe available rotation capacity of the joint. Influence of the particular components on the rotation capacity was also investigated. In the paper a general procedure for determination of rotation capacity was proposed.

scholarly journals Nanoscale Flexibility Parameters of Alzheimer Amyloid Fibrils Determined by Electron Cryo-Microscopy

2010 ◽  
Vol 49 (7) ◽  
pp. 1321-1323 ◽  
Author(s):  
Carsten Sachse ◽  
Nikolaus Grigorieff ◽  
Marcus Fändrich
Keyword(s):  
Amyloid Fibrils ◽  
Flexibility Parameters

Flexibility parameters for a monolithic plate with an eccentrically loaded pin

1991 ◽  
Vol 40 (4) ◽  
pp. 1049-1058 ◽  
Author(s):  
W.J. Slagter
Keyword(s):  
Flexibility Parameters

scholarly journals Improved amino acid flexibility parameters

2003 ◽  
Vol 12 (5) ◽  
pp. 1060-1072 ◽  
Author(s):  
David K. Smith ◽  
Predrag Radivojac ◽  
Zoran Obradovic ◽  
A. Keith Dunker ◽  
Guang Zhu
Keyword(s):  
Amino Acid ◽  
Flexibility Parameters
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