Results 101 to 110 of about 7,305,411 (311)

Study on the Law of Multi‐Fracture Propagation in Different Fracturing Fluid Viscosity

Energy Science &Engineering, EarlyView.
Samples and equipment Sample preparation Test equipment Analysis of test results Fracture propagation morphology Influence of fracturing fluid viscosity on crack initiation time/(fracture initiation pressure) Evolution law of injection pressure Cumulative relation curve of pressure–time–acoustic ABSTRACT Using the TCHFSM‐I large‐scale accurate triaxial
Zhixing Zhang, Xiang Fu, Yuedong Liu, Xiaoqiang Zhang, Yulong Jiang   +4 more
wiley   +1 more source

ON STEREOGRAPHIC CIRCULAR WEIBULL DISTRIBUTION

Journal of New Theory, 2016
– In this paper, we introduce Stereographic-l-axial Weibull and Stereographic Circular Weibull distributions for modeling l-axial and circular data by extending the Stereographic Semicircular Weibull distribution [8].
Phani Yedlapalli, Sagi Venkata Sesha Girija, Akkavajhula Venkata Dattatreya Rao   +2 more
doaj  

Quantifying Parametric Influence on Cuttings Transport in Deviated Deep Wells Using Global Sensitivity Analysis Methods

Energy Science &Engineering, EarlyView.
Cuttings transport simulation workflow. ABSTRACT Efficient cuttings transport is essential for wellbore stability and minimizing non‐productive time in deviated and horizontal wells. This study applies global sensitivity analysis (GSA) to evaluate the influence of 14 drilling parameters on cuttings transport using WellPlanTM hydraulic simulations ...
Esraa A. Refaie, Said K. El‐Sayed, Ahmed Z. Noah, Mostafa M. Abdelhafiz   +3 more
wiley   +1 more source

Gompertz-Weibull {Gompertz} Type I: A Four-Parameter Generalization of the Weibull Family

Journal of Statistical Theory and Practice
AbstractIn this paper, we provide a construction method that provides greater flexibility in modeling real-world phenomenon by generalizing univariate probability distributions. The Gompertz distribution is used to provide new classes of models through T-X{Y} construction, in a manner we will define as a “proper” generalization, illustrated by ...
Scott Smith, Brenda Diaz-Martinez
openaire   +2 more sources

Calculation Of The Ceramics Weibull Parameters

, 2011
{"references": ["D. Bush, \"Designing Ceramic Components for Structural Applications\"\nJ. Mater. Eng. Perf. ASM Int., vol. 2, 1993, pp. 851-862.", "A. F. McLean, D. L. Hartsock, \"Engineered materials handbook\" vol. 4,\nCeramics and Glasses. ASM International 1991, pp. 676-689.", "V. Fuis, P.
V. Fuis, T. Navrat
openaire   +1 more source

Bi‐Level Coordination of Demand Response and Multiple Virtual Power Plants in a Distribution Network for Flexibility Assessment

Energy Science &Engineering, EarlyView.
This study presents a hierarchical coordination framework where multiple VPPs interact with the DSO to optimize energy trades and flexibility offers. Each VPP aggregates DERs and DR, performing internal optimization, day‐ahead bidding, and assessing flexibility to reduce excess renewable generation and pollution.
Alireza Zare, Mohammad Agha Shafiyi, Mehrdad Setayesh Nazar, Miadreza Shafie‐khah, Pierluigi Siano   +4 more
wiley   +1 more source

Calculation of Weibull strength parameters, Batdorf flaw density constants and related statistical quantities using PC-CARES [PDF]

This manual describes the operation and theory of the PC-CARES (Personal Computer-Ceramic Analysis and Reliability Evaluation of Structures) computer program for the IBM PC and compatibles running PC-DOS/MS-DOR OR IBM/MS-OS/2 (version 1.1 or higher ...
Gyekenyesi, John P., Nemeth, Noel N., Szatmary, Steven A.   +2 more
core   +1 more source

Finite-Size Effects on Return Interval Distributions for Weakest-Link-Scaling Systems

, 2014
The Weibull distribution is a commonly used model for the strength of brittle materials and earthquake return intervals. Deviations from Weibull scaling, however, have been observed in earthquake return intervals and in the fracture strength of quasi ...
Hristopulos, Dionissios T., Kaniadakis, Giorgio, Petrakis, Manolis P.   +2 more
core   +1 more source

Probabilistic Multi‐Objective Energy Management System Model for an Energy Hub With PtG Technology for Cost Reduction and System Flexibility Improvement

Energy Science &Engineering, EarlyView.
Overview of the under‐study hub energy model showing the energy conversion and distribution among integrated sources and loads. ABSTRACT In this paper, a probabilistic bi‐objective energy management system (EMS) model is proposed for an energy hub (EH) equipped with renewable energy sources such as photovoltaic and wind turbine connected to the main ...
Mohammad Khoshabi, Mehrdad Ahmadi Kamarposhti, Mohsen Sedighi, Alireza Ghafouri   +3 more
wiley   +1 more source

Efficient experimental designs for sigmoidal growth models [PDF]

For the Weibull- and Richards-regression model robust designs are determined by maximizing a minimum of D- or D1-efficiencies, taken over a certain range of the non-linear parameters.
Dette, Holger, Pepelyshev, Andrey
core