scholarly journals RESEARCH OF THE ATTACKS SPREAD MODEL ON THE SMART OFFICE'S ROUTER

2020 ◽  
pp. 629-637
Author(s):  
Maryna Kolisnyk ◽  
Vyacheslav Kharchenko ◽  
Iryna Piskachova
Keyword(s):  
Graph Theory ◽  
Propagation Path ◽  
Mathematical Tool ◽  
Ddos Attacks ◽  
Spread Model ◽  
Office System

Currently, the number of DDoS attacks on various institutions has increased, so research on this issue is necessary and relevant. One of the devices that is targeted first is the router. This paper is devoted to the study of the spread of DDoS attacks on the router's subsystems of the Smart Office system. This paper analyzes and solves the problem of optimizing the search for the minimum propagation path of an attack on router subsystems using a mathematical tool – graph theory. The goal of this paper is to determine the most vulnerable router's subsystems to the effects of DDoS attacks.

scholarly journals Ceramics, materials, microelectronics and graph theory new frontiers

2020 ◽  
Vol 34 (34) ◽  
pp. 2150159
Author(s):  
Branislav M. Randjelović ◽  
Vojislav V. Mitić ◽  
Srdjan Ribar ◽  
Chun-An Lu ◽  
Ivana Radovic ◽  
...  
Keyword(s):  
Graph Theory ◽  
Grain Boundary ◽  
Applied Voltage ◽  
Mathematical Tool ◽  
Capacitance Change ◽  
Electronic Parameters ◽  
Theory Application ◽  
Theory Use

This research is focused on further developing of application and use of graph theory in order to describe relations between grains and to establish control over layers. We used functionalized BaTiO3 nanoparticles coated with Yttrium-based salt. The capacitance change results on super-microstructure levels are the part of the measured values on the bulk samples. The new idea is graph theory application for determination of electronic parameters distribution at the grain boundary and to compare them with the bulk measured values. We present them with vertices in graph, corresponding with grains, connected with edges. Capacitance change with applied voltage was measured on samples sintered in air and nitrogen, up to 100 V. Using graph theory, it has been shown that capacitance change can be successfully calculated on the layers between grains. Within the idea how to get parameters values at microlevel between the grains and pores, mathematical tool can be developed. Besides previously described 1D case, some original calculations for 2D cases were performed in this study, proving successful graph theory use for the calculation of values at nanolevel, leading to a further minituarization in micropackaging.

Connected Soft Graph

2020 ◽  
Vol 16 (02) ◽  
pp. 305-318
Author(s):  
Jyoti D. Thenge ◽  
B. Surendranath Reddy ◽  
Rupali S. Jain
Keyword(s):  
Graph Theory ◽  
Soft Set ◽  
Mathematical Tool ◽  
Cut Vertex

The theory of soft set offers a mathematical tool to deal with uncertainty. Nowadays, work on soft graph theory is progressing rapidly. In this paper, we define connected soft graph and derive some results. We also define cut vertex and bridge of soft graph along with some results on it.

scholarly journals Influence of Ethanol as Gasoline Blend on Spark Ignition Engine

2019 ◽  
Vol 35 (5) ◽  
pp. 1491-1499
Author(s):  
Narayanan Kannaiyan Geetha ◽  
Pappuula Bridjesh ◽  
Perumal Sekar
Keyword(s):  
Decision Making ◽  
Graph Theory ◽  
Compression Ratio ◽  
Spark Ignition ◽  
Optimal Combination ◽  
Spark Ignition Engine ◽  
Operating Parameters ◽  
Mathematical Tool ◽  
Matrix Approach ◽  
Multi Attribute Decision Making

This study analyzes the influence of ethanol as gasoline blend on a spark ignition engine and a mathematical tool is proposed based on multi attribute decision making approach to select optimal combination of operating parameters of a variable compression ratio multi fuel engine considering objective, subjective and integrated weights of attributes. Test fuels used were ethanol-gasoline blends having ethanol in proportions of 10, 20, 30 and 40 vol %. The compression ratio was varied as 6, 7, 8 and 9. The load was varied as 25, 50, 75 and 100%. A series of 16 experiments were conducted by adopting Taguchi based design of experiments resulting in L16 orthogonal array. The result of proposed method shows that the combination of compression ratio 6, ethanol-gasoline blend 30 vol% at a load of 75% is found to the best choice from among other trails and was validated using graph theory matrix approach

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