Apply with theory of reliability,according to the model,and provide a mathematic formula of optimum maintenance period while the availability of the equipment is max.

Petri nets is a new way in calculating bunker availability.

To ensure reliable and economical running of safety mornitor measuring system and safe work of major hazards,the relation between investment and availability of the system is studied.

Analysis on the Reliability and Validity of Questionnaire;

Forecast for highway freight volume based on validity;

Based on the conceptions of validity and operating rate from reliability analysis of coal mine production system,the computing formulas of operating rate is recounted.

Based on the effective degree of forecasting method, firstly, an index system which can be used to assess forecasting methods is set up; and then, using the grey synthetic evaluating method, an optimal assessing model which is used to choose the optimal forecasting method is established.

Based on degree truth,this paper presents the general truth degree expressions of value characteristics such as divergence degree,pseudo-distance and effective degree of finite theory.

This paper proposes a new distributed Heuristic approximation algorithm for Minimum Connected Dominating Set(HMCDS),which includes constructing Maximum Independent Set(MIS),introducing the concept of effective degree,and using of the greedy strategy of choosing dominator node through nodes\' information of effective degree.

Based on the research of psychology and vessel traffic engineering,this paper names a concept pilot working characteristic distance,Makes an exploration on the time dimension dealed with the relation between efficacy efficiency and mental pressure of pilot,concludes a corresponding relation between continuing time of pilot′s high efficacy efficiency and time of vessel′s encounter process.

A kind of practical effective thickness interpretation and evaluation method for glutenite reservoirs;

Determination of effective thickness for oil reservoirs with extra-low permeability;

On Interpreting Effective Thickness of Thin-interbed Sandstone Reservoirs in Area Mian120

The effective height and economic cross-section design for reinforced concrete beam-slab;

The effective height of reinforced concrete beam has direct influence on the loading capacity of the beam In the process of designing & construction,any faulty treatment of the beam will cause accident and disasters,which must be paid attention to by the engineering personne