A Cluster Number Adaptive Fuzzy c-means Algorithm for Image Segmentation

Shaoping Xu,Lingyan Hu,Xiaohui Yang,Xiaoping Liu 보안공학연구지원센터(IJSIP) 2013 International Journal of Signal Processing, Image Vol.6 No.5

A Fast Feature Similarity Index for Image Quality Assessment

Shaoping Xu,Xiaoping Liu,Shunliang Jiang 보안공학연구지원센터 2015 International Journal of Signal Processing, Image Vol.8 No.11

The main drawback of the phase congruency feature employed in the feature similarity index (FSIM) image quality assessment (IQA) algorithm is its low computational efficiency. In this paper, a novel fast feature similarity index (FFSIM) for image quality assessment is proposed. Based on the fact that human visual system (HVS) responds to the brightness stimulus mainly complying with Weber's law, the proposed FFSIM only performs spatial filtering to quickly calculate the contrast between the current pixel and its background, which is used to compute Weber visual salience similarity and a weighting coefficient in pooling stage after applied nonlinear mapping. Weber contrast and the gradient magnitude play complementary roles in characterizing the image local quality. After obtaining the local quality map, we use Weber weighting coefficient again as a weighting coefficient to derive a single quality score. As such, the multi-scale version of the FFSIM algorithm, i.e., MS-FFSIM is also proposed, which complies with the spatial frequency response characteristics of the HVS system. Extensive experiments performed on six publicly available IQA databases demonstrate that the proposed FFSIM and MS-FFSIM can achieve higher consistency with the subjective evaluations than state-of-the-art IQA metrics and the computational efficiency is greatly improved as well.

Effect of a microbial phytase on growth performance, plasma parameters and apparent ileal amino acid digestibility in Youxian Sheldrake fed a low-phosphorus corn-soybean diet

He, Shaoping,Medrano, R.F.,Yu, Qifang,Cai, Yixin,Dai, Qiuzhong,He, Jianhua Asian Australasian Association of Animal Productio 2017 Animal Bioscience Vol.30 No.10

Objective: This study investigated the effect of microbial phytase supplementation on growth performance, tibia ash, plasma parameters, apparent ileal digestibility (AID) of amino acid (AA) and apparent digestibility of nutrients in Youxian Sheldrakes fed with low-phosphorus (P) cornsoybean diets. Methods: A total of 350 Youxian Sheldrakes (7d old) were randomly divided into 5 treatment groups: positive control (PC) group has adequate available P diet (0.42% and 0.38%, starter and grower), negative control (NC) group were deficient in available P (0.32% and 0.28%, starter and grower) and NC diet was supplemented with 3 levels of microbial phytase (500, 750, and 1,000 U/kg). Results: Dietary supplementation of phytase in NC diet improved the average daily gain, increased the levels of serum calcium (Ca), tibia Ca and P, AID of AA and apparent digestibility of energy and Ca in starter stage (p<0.05). There was an increased (p<0.001) in the utilization of P from 17.3% to 23.9%. Phytase supplementation (1,000 U/kg) has shown that the AID of His, Thr, Val, indispensable AA, Glu, Pro, and dispensable AA was higher (p<0.05) than that of NC. Moreover, phytase supplementation improved (p<0.05) serum and tibia Ca and P, AID of AA and apparent digestibility of dry matter, crude protein, energy, P and Ca, and reduced (p<0.05) feed to gain ratio (F/G) and the levels of serum alkaline phosphatase in grower stage. Likewise, an increase (p<0.001) in the utilization of P was noticed from 12.6% to 17.2%. Supplement phytase at 750 U/kg improved the AID of His, Thr, Asp, Cys, Pro, and Ser (p<0.05). Conclusion: The microbial phytase supplement could improve growth performance, AID of some AA and apparent utilization of other nutrients in Youxian Sheldrakes, and reduce excreta P load to environment.

[Poster Presentation] Surface Analysis of Papers Treated with N-chloro-polyacrylamide Using X-ray Photoelectron Spectroscopy:Mechanism of Wet Strength Development

Chen Shaoping,Wu Zonghua,Tanaka Hiroo 한국펄프·종이공학회 1999 한국펄프종이학회 기타 간행물 Vol.- No.-

The surfaces of sheets added with N-chloro-polyacrylamide (N-C1-PAM) are analyzed using X-ray photoelectron spectroscopy (XPS) to clarify the chemical bonding involved in the paper strength development induced by N-C1-PAM. The comparison of the observed N1s chemical shift of the sheet with those of the paper strength additives and the model compound, l-butyryl-3-propyl urea, illustrated the presence of covalent bonds of alkyl acyl urea and urethane on the fiber surfaces. Thus the formation of the covalent .bonds by N-CIthemselves and by N-C1-PAM with cellulose and hemicellulose may be an explanation for much higher effectiveness of N-C1-PAM on the improvement of wet strength of paper than A-PAM.

Application of Smart Technology in the Integrated Environmental Management of Urban Wetland Park

Xiaodan Zhao,Shaoping Wang 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.7

Wetland Park is one of the important ecological infrastructures. Besides providing the ecosystem service function and value, it is also an important place for leisure and entertainment. Efficient environmental management is an important measure to promote the sustainable development of the wetland park. By combining the smart technology with routine management method, the efficiency of the environmental management for the urban wetland park can be improved. The application of smart technology set the users' requirements as the basic goal, which is divided into four layers: perception layer, transport layer, support layer and application layer. The perception layer consists of sensor, camera, RFID, mobile terminal device and so on; the transport layer is composed of optical fiber, WIFI and 3G network; the support layer is composed of data management system, information open platform and service support system; and the application layer is composed of four modules including panoramic-view park, environmental maintenance, smart tourism and public participation. A wetland park located in Zhangzhou city, Fujian, China, was taken as a practice case.

Suspension mechanism simulation and optimization considering multiple disciplines

Hao Wang,Shaoping Wang,Mileta M. Tomovic 대한기계학회 2009 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.23 No.1

A new method in suspension mechanism design considering two coupled disciplines, dynamics and structure, has been proposed in this paper. One of the decomposition methods widely used in multidisciplinary design optimization (MDO)--collaborative optimization (CO) has been used in this work. CO is a bi-level optimization architecture that preserves the autonomy of individual disciplines. In subsystem level, these two disciplines share the same model from CAD models in preprocess stage. Data file and interface have been explained and implemented in detail. The result obtained has shown that it works well and the time cost is less than before.

Nonlinear vibration of FG-CNTRC curved pipes with temperature-dependent properties

Mingjie Liu,Shaoping Bi,Sicheng Shao,Hadi Babaei 국제구조공학회 2023 Steel and Composite Structures, An International J Vol.46 No.4

In the current research, the nonlinear free vibrations of curved pipes made of functionally graded (FG) carbon nanotube reinforced composite (CNTRC) materials are investigated. It is assumed that the FG-CNTRC curved pipe is supported on a three-parameter nonlinear elastic foundation and is subjected to a uniform temperature rise. Properties of the curved nanocomposite pipe are distributed across the radius of the pipe and are given by means of a refined rule of mixtures approach. It is also assumed that all thermomechanical properties of the nanocomposite pipe are temperature-dependent. The governing equations of the curved pipe are obtained using a higher order shear deformation theory, where the traction free boundary conditions are satisfied on the top and bottom surfaces of the pipe. The von Kármán type of geometrical non-linearity is included into the formulation to consider the large deflection in the curved nanocomposite pipe. For the case of nanocomposite curved pipes which are simply supported in flexure and axially immovable, the motion equations are solved using the two-step perturbation technique. The closed-form expressions are provided to obtain the small- and large-amplitude frequencies of FGCNTRC curved pipes rested on a nonlinear elastic foundation in thermal environment. Numerical results are given to explore the effects of CNT distribution pattern, the CNT volume fraction, thermal environment, nonlinear foundation stiffness, and geometrical parameters on the fundamental linear and nonlinear frequencies of the curved nanocomposite pipe.

Antioxidant and antibacterial capabilities of phenolic compounds and organic acids from Camellia oleifera cake

Duoduo Zhang,Shaoping Nie,Mingyong Xie,Jielun Hu 한국식품과학회 2020 Food Science and Biotechnology Vol.29 No.1

There is growing interest in the antioxidants and antibacterial activity from natural substances. The purpose of the research was to gain and distinguish phenolic substances and organic acids in the Camellia oleifera cake, and to study their antioxidant and antibacterial activities. The extraction and purification of them were achieved by solvent extraction and column separation, respectively. The conclusions displayed that purity of the phenolic substances was 94.1 ± 0.5% w/w and that of organic acid was 96.0 ± 0.3% w/w; Fifteen phenolic substances were certificated using HPLC–ESI–MS technology; oxalic, citric, acetic, malic, and succinic acids are discovered to be main organic acids. In addition, the phenolic substances and organic acids both have good antioxidant activity and obvious inhibition against six species of bacteria. These conclusions can be useful in the reuse of the waste of Camellia oleifera oil industry in the future.

Adaptive Robust Torque Control of Electric Load Simulator with Strong Position Coupling Disturbance

Xingjian Wang,Shaoping Wang,Bin Yao 제어·로봇·시스템학회 2013 International Journal of Control, Automation, and Vol.11 No.2

Electric load simulator (ELS) is an important equipment to exert aerodynamic load to actuation system according to flight condition. The key issue of ELS is how to eliminate the influence of extra torque caused by actuation system, parametric uncertainties and uncertain nonlinearities. In order to overcome these difficulties, this paper proposes a powerful model-based adaptive robust torque control (ARTC) algorithm which transfers external disturbance elimination problem to a performance-oriented problem under uncertainties and nonlinearities. A discontinuous projection-based online parameter adaptation is employed to reduce the effect of various parameter uncertainties. Instead of discontinuous friction model, a continuous friction model based on smooth shape function is applied for friction compensation. The estimated velocity of actuator is utilized in ARTC controller for eliminating extra torque. The backstepping design via adaptive robust control Lyapunov function is employed to construct ARTC control law for ELS. Extensive comparative results indicate that the proposed ARTC controller is effective to achieve a guaranteed transient as well as final tracking accuracy in the presence of both parametric uncertainties and uncertain nonlinearities.

Adaptive Fuzzy Robust Control of PMSM with Smooth Inverse Based Dead-zone Compensation

Xingjian Wang,Shaoping Wang 제어·로봇·시스템학회 2016 International Journal of Control, Automation, and Vol.14 No.2

It is a challenging work to design high precision/high performance motion controller for permanentmagnet synchronous motor (PMSM) due to some difficulties, such as varying operating conditions, parametricuncertainties and external disturbances. In order to improve tracking control performance of PMSM, this paperproposes an adaptive fuzzy robust control (AFRC) algorithm with smooth inverse based dead-zone compensation. Instead of nonsmooth dead-zone inverse which would cause the possible control signal chattering phenomenon, anew smooth dead-zone inverse is proposed for non-symmetric dead-zone compensation in PMSM system. AFRCcontroller is synthesized by combining backstepping technique and small gain theorem. Discontinuous projectionbasedparameter adaptive law is used to estimate unknown system parameters. The Takagi-Sugeno fuzzy logicsystems are employed to approximate the unstructured dynamics. Robust control law ensures the robustness ofclosed loop control system. The proposed AFRC algorithm with smooth inverse based dead-zone compensationis verified on a practical PMSM control system. The comparative experimental results indicate that the smoothinverse for non-symmetric dead-zone nonlinearity can effectively avoid the chattering phenomenon which wouldbe caused by nonsmooth dead-zone inverse, and the proposed control strategy can improve the PMSM outputtracking performance.