Results 11 to 20 of about 331,401 (269)

Analysis of the annual vehicle tax payment service system using Petri net model

open access: yesDesimal, 2021
Service is the process of meeting needs through the activities of others directly. Service is usually synonymous with queues, and queues are what many people complain about.
Jessica Andriani   +2 more
doaj   +1 more source

Decoupling and dimension reduction method for distribution system security region

open access: yesIET Energy Systems Integration, 2023
The application of the security region methodology in a practical distribution system with large scale normally requires large computer memory and high computation time. To overcome this problem, this article proposes a decoupling and dimension reduction
Jun Xiao, Yuhao Fan, Xun Jiang
doaj   +1 more source

On Some Types of Matrices for Fan Plane Graph and Their Dual

open access: yesTikrit Journal of Pure Science, 2023
This work aims to discuss the adjacency matrices, Incidence matrix and Degree matrix of some types plane graphs we usually used them, as complete graphs, cycle graph,…,ect.
Haneen Mohammed Adil, Israa Munir Tawfik
doaj   +1 more source

Evaluation model of MOOC grade based on incidence matrix [PDF]

open access: yesMATEC Web of Conferences, 2020
Under the current situation that MOOC are highly valued, how to guide online students to learn through MOOC has become a research topic. The traditional score calculation model has some problems.
Zhi Yafang, Wu Yizhi
doaj   +1 more source

Incidence and Laplacian matrices of wheel graphs and their inverses

open access: yesThe American Journal of Combinatorics, 2023
It has been an open problem to find the Moore-Penrose inverses of the incidence, Laplacian, and signless Laplacian matrices of families of graphs except trees and unicyclic graphs.
Jerad Ipsen, Sudipta Mallik
doaj   +1 more source

Can Defect Prediction Be Useful for Coarse-Level Tasks of Software Testing?

open access: yesApplied Sciences, 2020
It is popular to use software defect prediction (SDP) techniques to predict bugs in software in the past 20 years. Before conducting software testing (ST), the result of SDP assists on resource allocation for ST.
Can Cui, Bin Liu, Peng Xiao, Shihai Wang
doaj   +1 more source

On two Laplacian matrices for skew gain graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2021
Gain graphs are graphs where the edges are given some orientation and labeled with the elements (called gains) from a group so that gains are inverted when we reverse the direction of the edges.
Roshni T. Roy   +2 more
doaj   +1 more source

A Compositional Analysis Method for Petri-Net Models

open access: yesIEEE Access, 2017
Compositional analysis aims to reveal the underlying structures of a large-scale system or network by analyzing its constituent components and their relationships.
Jie Ding, Xiao Chen, Rui Wang
doaj   +1 more source

The (16,16,2) designs

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1979
Elementary techniques of algebraic coding theory are here used to discuss the three biplanes with k=6. These three designs are intimately related to the (16,11) extended binary Hamming code and to one another; we systematically investigate these ...
E. F. Assmus, Jr, Chester J. Salwach
doaj   +1 more source

Assessment method for identification of electrical connectivity and thermal stability of power grid

open access: yesThe Journal of Engineering, 2019
Primary equipment failure in substation has a significant impact on the reliability of the power supply, and even threatens the thermal stability of power grid.
Yao-Yu Xu   +5 more
doaj   +1 more source

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