Kybernetes: Volume 33 Issue 2

Theory of grey systems: capturing uncertainties of grey information

In this paper, we take a look at the state‐of‐the‐art of the theory and applications of the so‐called grey systems theory founded in the 1980s. After a brief historical review of…

Grey transportation problem

In ordinary transportation problems, it is always supposed that the mileage from every source to every destination is a definite number. But in special conditions, such as…

Analysis of provision production security in Sichuan and countermeasures

The total provision output in Sichuan province fluctuates greatly, which is mainly caused by the influence of natural disasters. In this paper, the author analyzes several factors…

SCGM‐model and grey control of “poor” information systems

“Poor” information systems are found everywhere. In this paper, a control approach to “poor” information systems, such as social economic systems, is proposed. First, “poor”…

Grey linear programming

This paper describes the use of grey system theory in mathematical programming problems. In particular, the linear programming problem, which is one of the most widely used…

The GM models that x(n) be taken as initial value

In this paper, the starting conditions of GM model group are studied. By choosing the nth component of X⁽¹⁾ as the starting conditions of the grey differential model, improvements…

Algorithm model research of the logical cutting tree on the network maximum flow

It is the complexity and the calculated quantities which require the use of the general algorithm for evaluating the maximum flow of the network. The logical cutting tree…

Improved absolute grey incidence degree and its application

On the basis of the given absolute incidence degree, a new absolute incidence degree is defined. It not only possesses the characteristic of invariant translational…

The open router of active network and security

This paper discusses the implementation method of open router based on active network, and describes the measure to assure the security of network. The active network can supply…

Dynamically updating UIDB to implement personalized service

User interests in electronic commerce reflect the behavior set of users acting on certain impulse. Electronic commerce web stations (ECWS) might make full use of intelligent IT to…

A dynamic method of air temperature forecast

According to the air temperature change and concerning some information from a region and a large city over the years, this paper delves into a dynamic method of air temperature…

Synthetic utility index method and venturous capital decision‐making

A new risk investment decision‐making method, the synthetic utility index method, based on the whitenization weight function of grey numbers and the capital assets pricing model…

Technical change and funds for science and technology

In this paper, first a new model, the G‐C‐D model, which is used to measure the technological advance, is built. The progress with non‐technical elements in Solow's “remaining…

The G‐C‐D model and technical change

A new model called the G‐C‐D model, which is used to measure the technological advance, is built in this paper. The progress in non‐technical elements in Solow's “remaining value”…

A hybrid ARQ type‐II turbo‐coding arrangement and its frame error rate performance

A modified hybrid ARQ type‐II retransmission technique is presented. In this scheme, only the originally punctured bits are transmitted instead of full retransmission, if…

Unascertained model forecast on poor data with conditions functions in Rn

Based on the definitions of poor data, an unascertained model and four axioms, condition functions and range etc. were analyzed then induced second‐order condition function…

Grey GM(1, 1) model with function‐transfer method and application to energy consuming prediction

The ability to forecast a trend is very important in energy consumption prediction and energy production planning. The principle, under which the grey systems theory is applied in…

The minimum spanning flow in a network and its self‐organization principle

In the research work on blocking flow, the concept of minimum flow of a two‐terminal network was introduced. In this paper, a kind of special blocking flow – the concept of…

Study on locations and amounts of scrap ammunition processing

Based on the scrap ammunition processing which is a part of the ordnance supply engineering, this paper established a decision‐making model of locations and amounts of scrap…

Stability of nonlinear output‐feedback control system

This paper studies the stability properties of a class of nonlinear output‐feedback control system. By using a control transform and constructing Liapunov function, the sufficient…

Using grey relational analysis to analyze the medical data

Grey relational analysis (GRA) proposed by Deng Julong is very useful to analyze medical data. The essential thought of GRA is to find a grey relational order, which can be used…

Grey optimized models and their existence theorem

Based on ideal absolute errors and relative errors, a new grey model‐GM^p(1,1) model is presented. The existence problem of its solution is also solved based on a few conditions…

Organic mechanism and capacity grey set optimization for knowledge‐based enterprise

In this paper, the organism model for knowledge‐based enterprise is proposed. A dynamic capacity grey set is defined and analyzed based on the definition of the growth and…

A generalization of the GM(1,1) direct modeling method with a step by step optimizing grey derivative's whiten values and its applications

This paper generalises the GM(1,1) direct modeling method with a step by step majorizing grey derivative's whiten values to unequal time interval sequence modeling, and proves…

Building grey model GM(1,1) with translation transformation

First, the conditions for GM(1,1) modeling are analyzed, and it revealed that the whole trend of the class ratio sequence and the whole concave‐convex of data sequence both affect…

Analysis and design of error information detection software

This paper introduces some problems of analysis and design of error information detection software. These problems include the basic aim of the system, the overall design…

E‐commerce and exhibition industry go hand in hand – the ideal combination in new century

Since our reform and open policy has been adopted, our exhibition industry has increased rapidly. Exhibitions are unique amongst new and established media in enabling customers…

Relativistic system and relativistic control

Classical control theory and modern control theory satisfy the Galilean principle of relativity. If the velocity v of controlled systems is high that is to say, v approaches the…

Study on adjustment countermeasure of an energy consumption structure

The unreasonable situation of energy consumption structure has seriously influenced the development of China. This paper predicts the developing tendency of energy consumption…

Study on method about UIDB creation and refining

In electronic commerce (EC), user interest reflects the behavior set of a users’ group acting on certain impulses. Electronic commerce web stations (ECWS) might be useful for…

Evaluation of system storage reliability

Aiming at the product with long storage and one‐time application, this paper establishes the mathematical model of storage reliability and mathematical model system storage…

Rough grey sets

The differences and relations between grey sets and rough sets are discussed. Based on the concept of a rough grey set, its entropy is studied. Moreover, the grey inference…

The characteristics analysis of SCGM(1,1) model and the new grey modeling methods

The system with partial unknown structure, parameters and characteristics is called a grey system. Grey system theory is a newly developed theory to deal with the problem of…

The method of gray model control for the vibration of rotor system

The theory and method of the gray model control with removed residuals is used first for the study of active vibration control of a rotor system. For the symmetric rotor bearing…

Preliminary investigation on the relationship between meteorological conditions and diseases

In this paper, the relationship between meteorological conditions and diseases is investigated. The relative fitting errors for nine kinds of diseases are within the limit of…

Fuzzy theory and its applications in insulation diagnosis of electrical equipment

It is an effective approach to combine state signal processing with fuzzy mathematics for recognizing fuzziness and randomness clearly. This paper shows how the fuzzy membership…

Preface