There is need to quantify the dental plaque in order to keep fit and prevent vital diseases' occurrence. Dental plaque quantification is very crucial to patients, dentists as well as researchers. This paper presen...
详细信息
ISBN:
(纸本)9787894631046
There is need to quantify the dental plaque in order to keep fit and prevent vital diseases' occurrence. Dental plaque quantification is very crucial to patients, dentists as well as researchers. This paper presented a method to automatically quantifying the dental plaque in digital tooth images using fuzzy c-means (FCM) clustering algorithm associated with images' histogram analysis. The proposed approach was applied to a clinical database consisting of 30 objects. The experimental results indicate that the proposed method provides accurate quantitative measurement of dental plaque compared with that of dental plaque indices.
Most faults of large-scale electromechanical equipment are trendy ones, often have long course characteristics. As the fault information is usually lost in non-fault information of condition changes, the traditional m...
详细信息
ISBN:
(纸本)9784883254194
Most faults of large-scale electromechanical equipment are trendy ones, often have long course characteristics. As the fault information is usually lost in non-fault information of condition changes, the traditional methods are difficult to predict it effectively. To solve this problem, field data-based fault prediction theory and methods are studied primary for large rotating electromechanical equipment, and new nonlinear prediction way in multi-transform domains is proposed to achieve long course prediction for the equipment under variable operating conditions. In the new way fault feature extraction method of nonlinear dimensionality reduction is investigated to extract fault and potential fault sensitive information and to separate faulty development changes from non-fault energy changes. The research is important for large electromechanical equipment to achieve early fault prediction, guarantee safe operation, save maintenance costs, improve utilization and implement scientific maintenance.
The signal transmission and measurement methods of the passive UHF radio-frequency identification (RFID) system are discussed in this paper. Parts of tag's communication performance, which conform to the ISO/IEC 1...
详细信息
In this paper, a new chaotic system is proposed. It also belongs to Lorenz system, which has three parameters and two nonlinear terms, and one of the parameters is the bifurcation parameter. The nonlinear dynamic prop...
详细信息
This work presents a method to generate a multi-scroll chaotic attractor by switched fractional system. Based on two piecewise-linear nonlinear functions, sub-models are constructed with the system order less than one...
详细信息
In this paper, the model of the weighted NW small-world networks is established when the topology of the network is given. Then the sufficient condition for synchronization in weighted networks is obtained by stabilit...
详细信息
Data process of large rotating machinery is in line with basic features of information fusion. A framework of fault diagnosis and prediction based on sensor information fusion is built. An improved extracting method o...
详细信息
Multi-sensor data fusion theory and methods have been widely applied to many fields. Multi-sensor data fusion and information redundancy technology are adopted to achieve target characters synthetically judgment.. The...
详细信息
Data process of large rotating machinery is in line with basic features of information fusion. The fault deterioration is extracted from the pattern spectrum as the fault feature , and its trend is predicted by the in...
详细信息
暂无评论