scholarly journals A Generalized Decision Logic Language for Information Tables

2007 ◽  
pp. 16-21
Author(s):  
Xiaosheng Wang
Keyword(s):  
Decision Logic ◽  
Information Tables

Development of L1-norm sliding mode observer for sensor fault diagnosis of an industrial gas turbine

2021 ◽  
pp. 095965182199617
Author(s):  
Mahyar Akbari ◽  
Abdol Majid Khoshnood ◽  
Saied Irani
Keyword(s):  
Fault Detection ◽  
State Space ◽  
Gas Turbine ◽  
Sliding Mode ◽  
State Space Model ◽  
Sensor Fault ◽  
Space Model ◽  
Decision Logic ◽  
Sensor Fault Detection ◽  
Industrial Gas Turbine

In this article, a novel approach for model-based sensor fault detection and estimation of gas turbine is presented. The proposed method includes driving a state-space model of gas turbine, designing a novel L1-norm Lyapunov-based observer, and a decision logic which is based on bank of observers. The novel observer is designed using multiple Lyapunov functions based on L1-norm, reducing the estimation noise while increasing the accuracy. The L1-norm observer is similar to sliding mode observer in switching time. The proposed observer also acts as a low-pass filter, subsequently reducing estimation chattering. Since a bank of observers is required in model-based sensor fault detection, a bank of L1-norm observers is designed in this article. Corresponding to the use of the bank of observers, a two-step fault detection decision logic is developed. Furthermore, the proposed state-space model is a hybrid data-driven model which is divided into two models for steady-state and transient conditions, according to the nature of the gas turbine. The model is developed by applying a subspace algorithm to the real field data of SGT-600 (an industrial gas turbine). The proposed model was validated by applying to two other similar gas turbines with different ambient and operational conditions. The results of the proposed approach implementation demonstrate precise gas turbine sensor fault detection and estimation.

Feature Based Comparison and Selection of SDN Controller

2019 ◽  
Vol 16 (05) ◽  
pp. 1950029
Author(s):  
Mohammed Abdul Rahman AlShehri ◽  
Shailendra Mishra
Keyword(s):  
Network Performance ◽  
Campus Network ◽  
Analytic Hierarchy ◽  
Decision Logic ◽  
Feature Based ◽  
Efficient Processing ◽  
Hierarchy Process ◽  
Entire Network ◽  
Sdn Controller ◽  
Selection Of

Software defined network (SDN) controller selection in SDN is a key challenge to the network administrator. In SDN, control plane is an isolated process and operate on control layer. The controller provides a universal view of the entire network and support applications and services. The three focused parameters for controller selection are productivity, campus network and open source. In SDN, it is vital to have a good device for the efficient processing of all requests made by the switch and for good behavior of the network. For selecting best controller for the specified parameters, decision logic has to be developed that allow us to do comparison of the available controllers. Therefore, in this research we have suggested a methodology that uses analytic-hierarchy-process (AHP) to find a best controller. The approach has been studied and verified for a big organization network setup of Al-Majmaah University, Saudi Arabia. The approach is found to be more effective and increase the network performance significantly.

Tabular Decision Logic for Structural Design

1966 ◽  
Vol 92 (6) ◽  
pp. 473-490 ◽  
Author(s):  
Steven J. Fenves
Keyword(s):  
Structural Design ◽  
Decision Logic

Formulation of Decision Logic Tables

1971 ◽  
Vol 97 (1) ◽  
pp. 439-461
Author(s):  
Jimmy L. Noland ◽  
Chuan C. Feng
Keyword(s):  
Decision Logic

scholarly journals Нормативи оцінки фітомаси компонентів стовбура соснових деревостанів Північного Степу України

2019 ◽  
pp. 11-17
Author(s):  
В. М. Ловинська
Keyword(s):  
Correlation Analysis ◽  
Statistical Processing ◽  
Close Relation ◽  
Practical Significance ◽  
Aboveground Phytomass ◽  
Power Resources ◽  
Pine Tree ◽  
The Common ◽  
Pine Stands ◽  
Information Tables

Мета статті – розробити нормативи оцінки компонентів стовбура надземної фітомаси соснових деревостанів в умовах Північного Степу України. Методика дослідження. У представленій роботі використана методика збору та обробки дослідного матеріалу проф. П.І. Лакиди. Зроблено статистичну обробку, кореляційний аналіз та пошук регресійних залежностей компонентів фітомаси стовбура сосни звичайної від таксаційних показників деревостану. Результати дослідження. Сформовано робочий масив даних, який характеризує компоненти фітомаси стовбура для оцінювання біотичної продуктивності штучних соснових деревостанів. Розроблено та наведено математичні моделі оцінки фітомаси деревостанів сосни звичайної за компонентами деревини стовбура, деревини стовбура у корі, кори стовбура. Визначено, що збільшення усіх досліджуваних компонентів надземної фітомаси стовбурів відбувається зі зростанням середніх висот та діаметрів деревостанів. Елементи наукової новизни. На основі регресійних моделей побудовано нормативно-інформаційні таблиці для зони Північного Степу України. Практична значущість. Одержані системи нормативів надають можливість оцінювання екологічних та енергетичних ресурсів, а також розрахувати депонування вуглецю у штучних соснових деревостанах досліджуваного регіону. The purpose of the article is to develop the standards for evaluating the trunk components of the aboveground phytomass of pine stands in the Northern Steppe of Ukraine. Methods of research. The method of collecting and processing the research material, developed by Professor P.I. Lakyda, was used in the presented paper. The statistical processing, correlation analysis and the search of regression dependences of phytomass components of the common pine trunk on the taxation indices of the tree stand were made.           The research results. The working data mass has been formed concerning the results of field and laboratory researches, which characterizes the components of the trunk phytomass for assessing biotic productivity of artificial pine stands in the Northern Steppe of Ukraine. Correlation analysis of the relation closeness of the main phytomass components of the tree stands with their basic taxational signs was carried out. A direct close relation of the trunk phytomass components in the bark and wood without bark with the average tree diameter and the height of stands has been established. The value of correlation coefficient of the bark phytomass with all taxational indices, except the density, demonstrates the moderate relation. Mathematical models have been developed and obtained to assess ordinary pine stands’ phytomass by the components of the trunk wood, trunk wood in the bark, and bark of the trunk. It has been determined that the increase of all the studied components of the aboveground trunk phytomass occurred together with increasing the average heights and diameters of tree stands. The elements of scientific novelty. Standard and information tables have constructed on the basis of regression models for the zone of the Northern Steppe of Ukraine. Practical significance. The obtained systems of standards enable to evaluate ecological and power resources and calculate the carbon sequestration in artificial pine tree stands of the studied region.

scholarly journals Modeling of quantum-like cognitive phenomena by the Fourier-holography technique under the choice of alternatives

2021 ◽  
Vol 45 (4) ◽  
pp. 551-561
Author(s):  
A.V. Pavlov
Keyword(s):  
Physical Nature ◽  
Correlation Radius ◽  
Reference Image ◽  
Total Probability ◽  
Natural Experiments ◽  
Classical Formula ◽  
Decision Logic ◽  
Ring Architecture ◽  
Logic Inference ◽  
Formula Of Total Probability

The article is dedicated to the search for a biologically motivated mechanism of the cognitive phenomenon of violation of the classical formula of total probability for the disjunction of incompatible events, which is considered by a number of researchers as a quantum-like phenomenon. A classical mechanism implemented by the 6f Fourier holography scheme of the resonant architecture that does not require reference to quantum mechanics either in its physical nature or at the level of formalism is demonstrated. In the analysis, the decision-making is interpreted as a choice of alternatives by using the non-cooperative game "Prisoner's Dilemma". The approach to the task is based on the search for a mechanism for forming a conditional estimate under a condition that contradicts the rule of monotonous decision logic. It is demonstrated that this estimate, in contrast to the unconditional and conditional one with a non-contradictory condition, is formed by logic with exception. The ring architecture of the holographic setup corresponds to the biologically inspired neural network concept of the excitation ring and implements cognitive dissonance on logic with exception. Conditions and ranges of violation of the classical formula of total probability in relation to the correlation radius of the reference image recorded in a hologram storing the monotone logic inference rule are analytically determined. The analytical model is confirmed by a quantitative coincidence of the results of numerical modeling with the published results of natural experiments.

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