Search

The Stability of SG water level plays an important role in the safety of nuclear power plants, but tuned the parameter of water level PID controller is hard. Proposed a novel algorithm, KIPSO, which tuning PID controller parameters. Determine the cluster centre through K-means value cluster algorithm, and take the cluster territory as the characteristic value of vaccine set, enhance the vaccine multiplicity. Updated vaccine extraction by self-adaptive method, improved the convergence and adaptability. Analyzed the algorithm robustness in detail, and gave the rule which the immunity selection parameter. The simulation results shows: compares with the PID controller whose parameters are tuned by ZN method, KIPSO have a smaller overshoot, a better stability, and a shorter adjustment time. The simulation results show that the proposed method is effective for tuning PID parameters.

Objective: To explore the clinical efficacy of the use of polymethylmethacrylate (PMMA) augmentation of a cannulated and fenestrated pedicle screwfixation for the treatment of lumbar degenerative disease accompanied withosteoporosis. Methods: Thirty-one patients of lumbar degenerative disease accompanied with osteoporosisfrom Jun 2008 to Jan 2013 were selected .They were 11 males and 20 females withaverage age of 73. 5 years including lumbar degenerative stenosis 14 cases，lumbar intervertebral discherniation combined with segmental instability 9 cases，lumbar degenerative spondylolisthesis 6 cases，andlumbar degenerative scoliosis 2 cases. The patients were treated with lumbar canal decompression, fusion and polymethylmethacrylate (PMMA) augmentation of a cannulated and fenestrated pedicle screw fixationaccording to their clinicalfeature and imaging. Results: All cases were followed up for 40 months (range,36-48months). No screw breakage, rod breakage, screw extraction, loosening, pseudoarticulation formation, or incision infection wasfound.The postoperative VAS score wasremarkably lower than preoperative score (P < 0.05). The JOAscore were improved significantly (P < 0.05). Conclusion: For patients suffering from lumbar degenerative disease accompanied with osteoporosis，PMMA augmentation of a cannulated and fenestrated pedicle screwfixation was helpful for increasing the stabilization of screw and preventing from loosen and dislocation of the screws，therefore beneficial for improvement and maintenance of clinical efficacy. Key word: Osteoporosis; cannulated and fenestrated pedicle screw; PMMA; Lumbar degenerative disease

This article briefly introduces the iron ore grinding classification process and analyzes the distribution of mining energy consumption. To realize the energy conservation of the mill by using genetic BP neural network, we make MATLAB simulation test. It shows feasibility and superiority of the control scheme, which has some meaning for energy conservation and reducing consumption of iron mine.

This article briefly introduces that the blast blower shaft fault diagnosis and prediction based on wavelet analysis. When the blast furnace operation of axial fan of vibration signal de-noising and singularity analysis, the fan operation state for real-time monitoring, timely find fault information and fault point, guarantee the safety, stability of the blast blower operation. Through the data with Matlab simulation effective, is that the wavelet analysis used in blast furnace fan axis of the fault diagnosis of feasibility.

Considering the complexity and relevance of fault diagnosis for turbo-generator, the paper makes diagnosis by adopting improved genetic BP network algorithm. In order to solve the problems of slow network learning and tendency of minimum point in BP algorithm, the structure and specific parameter of BP network optimized by genetic algorithm were used in the discussion of a model integrated with adaptive genetic neural algorithm, which was applied in the fault identification of turbo-generator. Experimental data shows that the algorithm is characterized by high convergence rate, effective vibration fault diagnosis for turbo-generator and relative high reliability and practicability.

In order to obtain the movement data of an aircraft,including trajectory,attitude,displacement,deformation and other kinds of movement data of the aircraft structural parts in the flight accurately,an optical and dynamic measurement method is proposed and implemented based on the theory of close-range photogrammetry and stereo vision technology.The main contents of the method are multi-camera self-calibration technique based on close-range photogrammetry,camera dynamic positioning and jitter eliminating in flight technology,rapid acquisition for the trajectory and attitude of rigid structure,precise matching of non-coding landmark array by multi-camera(≥3) collaboration.The simulation results show that the reprojection error of the camera is less than 0.03 pixel,the trajectory and attitude measurement accuracy of the system can be up to 0.01 mm/1 m,and the measurement accuracy of key point displacement and deformation is 0.05 mm/1 m.It demonstrates that the system have met the standards of accuracy and reliability for aircraft testing industry.

Aims and objectives This study aimed to explore the experiences and factors associated with insomnia in Chinese breast cancer survivors. Background Insomnia is a common and significant symptom in breast cancer survivors. Quantitative studies are unable to describe the experience of insomnia and the sleep-associated factors from a personal point of view. A profound understanding of the experience of insomnia in breast cancer survivors can provide information for health workers and caregivers to allow them to provide more effective support. Design A descriptive qualitative research was adopted. Methods In-depth interviews were conducted with 22 insomniac breast cancer survivors. A qualitative content analysis was used to analyse the data. Results Three themes emerged concerning the experiences of insomnia, including sleep neglect, insomnia perception and insomnia anxiety. Participants reported their own opinions on three insomnia-associated factors, including factors associated with hospitalisation, factors associated with breast cancer and the therapies and too much attention placed on sleep. Conclusions Survivors would neglect their sleep problems in the early stage after diagnosis. When they became aware of their sleep problems, they were inclined to worry too much and sought help from traditional Chinese medicine. Anticipatory sleep anxiety, excessive negative cognitive activities and insomnia became a vicious circle for insomniac breast cancer survivors. Relevance to clinical practice The findings provide detailed information to help nurses understand the experiences of breast cancer survivors with insomnia. Nurses could provide proper care to help prevent insomnia or improve sleep.

The selection of Ultra-High Voltage (UHV) substation site is a complex multi-objective decision-making problem. The randomness of wind power output and continuous adjustment of the grid structure will bring uncertain factors to the decision-making process, which will directly affect the stability of decision-making result. Therefore, the sensitivity analysis is necessary to be carried out to the uncertainty of index values and index weights in the decision-making process. Firstly, this paper carries out the sensitivity analysis under the change of single index and multiple weights respectively. Three comprehensive evaluation methods including Delphi, Entropy weight method, grey relational analysis (GRA), which will help decision makers master and deal with the sensitive indexes and weights more carefully in the decision-making process. Secondly, this paper takes comprehensive evaluation values of each alternative obtained by each comprehensive evaluation method with the change of index values and index weights as sample data respectively, and introduces cloud model to compare the robustness of decision-making results under each comprehensive evaluation method in order to evaluate the advantages and disadvantages of each comprehensive evaluation method, this will help decision makers choose the comprehensive evaluation method with better robustness of decision result. Finally the example analysis results verify the effectiveness of the method proposed in this paper, so as to gain insight into the sensitivity analysis of decision problem and relate it back to real engineering application.

The combined de-inking technology of ultrasonic, UV irradiation and enzymatic methods was introduced into the de-inking process of HP laser printed paper. The purpose was to reduce the consumption of alkali or even preprocess without alkali absolutely for the purpose of environment protection. The de-inking effects of cellulase, amylase, lipase and their mixture were compared and the experiment results showed that combined enzymes of cellulase and amylase have the best de-inking efficiency which has a 12% increment of brightness. The de-inking efficiencies of several different de-inking technologies were compared, which can provide basis to establish combined de-inking technologies.

To investigate whether changes of amino acid neurotransmitter releases in the rostral ventrolateral medulla (rVLM) were related to acupuncture and to the antihypertensive effect of melatonin (Mel) microinjected into the anterior hypothalamic area (AHA) of rats with stress-induced hypertension (SIH), as well as to compare and analyze the relationship between the both antihypertensive mechanisms of acupuncture and of Mel in the AHA. Methods: Animal model of SIHR was made by electric foot shocks combined with noises. Electroacupuncture (EA) was used and "Zusanli" acupoint of both side was selected. The technique of drug microinjection into the brain was used to observe the change of blood pressure (BP), and synchronously, brain microdialysis was performed for collecting dialysate samples, and then the concentration of amino acid neurotransmitters in the dialysate samples was determined by high performance liquid chromatography combined with fluorescent detection (HPLC-FD). Results: After the animal received stress treatment, the BP elevated, synchronously, the release of glutamate (Glu) in the rVLM increased, and when EA was performed, the elevated BP of the rats with SIH decreased,simultaneously, the release of Glu in the rVLM decreased also. After Mel was microinjected of into the AHA of the SIHR, the elevated BP attenuated, meanwhile, the release of Glu decreased,and those of γ-aminobutyric acid (GABA) and taurine (Tau) increased in the rVLM.Administration ofbicuculline, an antagonist of GABAA receptor, into the rVLM prior to microinjection of Mel into the AHA could partially block the depressor effect of Mel in the AHA. Conclusion: The decrease in the release of Glu in the rVLM contributes to the antihypertensive effect of both acupuncture and Mel in the AHA in the rats with SIH, and the increase in the release of GABA and Tau in the rVLM is also important to Mel in the AHA.

Objective: To investigate the effects of acupuncture on constipation in rats. Method:Compound diphenoxylate was used to set up rat model of constipation. After needling "Hegu"and "Housanli", the time to first bowel movement, and stool grains quantity and weight in 12 rats were observed. Results: The time to first bowel movement was delayed, and the stool grains quantity and weight were reduced in the model rats. Acupuncture could significantly shorten the time to first bowel movement, and increase stool grains quantity and weight.Conclusion: Acupuncture can improve the defecating abilities in rats model of constipation.

This paper reviews and analyzes 50 articles concerning the treatment of climacteric syndrome by acupuncture and moxibustion therapries. The therapies were single acupuncture, acupuncture combining other methods, auricular-plaster therapy, and some other therapies. Clear diagnostic criteria were found in 39 articles, and the most common-used criteria wereCombination of TCM and Western Medicine Diagnostics and Therapeutics, Kupperman Index Scoring andCriterion of Diagnosis and Treatment Effect of TCM Diseases and Syndrome. All together 2946 cases were treated, and the therapeutic effect rates ranged from 58.1% to 100%. There were control group in 16 articles. The syndromes have been classified as 27 types in 15 articles, including type of yin-deficiency of the liver and the kidney, yang-deficiency of the spleen and the kidney, yang-deficiency of the kidney, yin-deficiency of the kidney, disharmony between the heart and the kidney, and the liver stagnation, etc. Some effects have been got in treating female climacteric syndrome with acupuncture and moxibustion therapy, however, there were fewer strict randomized controlled trials (RCT).

To promote acupuncture practice, the general situation of acupuncture in treating leucopenia between 1949–2004 were analyzed on the basis of Chinese Modern Acupuncture Database. From 1981, references of acupuncture treating leucopenia increased annually and steadily. In clinic, hydroacupuncture, needling, and moxibustion are widely used, and the selected acupoints are those of Bladder Meridian of Foot Taiyang and Governor Vessel. Acupuncture-moxibustion have a good therapeutic effects on leucopenia.

To review the general situation of acupuncture in treating vascular headache between 1949–2004 in an attempt to promote acupuncture practice, clinical references concerning acupuncture treatment of vascular headache were analyzed on the basis ofChinese Modern Acupuncture Database. From 1956, these references increased annually and steadily. In clinical practice, needling is cardinally used, and the acupoints are selected adjacent to diseased part and on syndrome differentiation.

A Computer-Generated of three-dimensional Hologram reproduction method is presented based on the theory of optical holography. In this paper, a mathematical model of three-dimensional objects is established. The Fresnel wave information of object is sampled according to the sampling theorem after simulated by computer. The object Fresnel wave amplitude is obtained by the Fresnel diffraction formula so that the Hologram can be calculated by FFT. Consequently, the object image can be acquired using each pixel value of image reproduction. And we use Euclidean distance to calculate the similarity of reproduced image and the original image so that the experimental results appear more intuitive. The proposed algorithm in this paper is not complex and time saving and suited to practical engineering application. So the technique can be infiltrated into medicine, archeology, military, aviation and other fields.

From November 2008 onwards, China implements GB/T 21714.2-2008 lightning protection design standards of buildings, which applies to the lightning risk assessment of buildings and public facilities. This paper based on the new national standards assesses risks of lightning strike to a teaching building, for the application and popularization of the new national standards for reference. In this paper, carries out data collection and zoning on the teaching building as well as the lightning risk assessment according to the evaluation process and method. Comparing all the obtained Lightning risk values with reference value results of the assessment. Finally, it makes recommendations with lightning protection of teaching building and its internal electronic equipment.

IPSec has been proposed to provide integrity, confidentiality and authentication of data communications over IP networks. However, the complex semantics of IPSec policies results in potential conflicts, such as shielding conflict, redundancy conflict and overlapping conflict, et al. The conflict should be identified and detected to avoid internet security threat. However, there has no research on identifying and defining IPSec security policy conflict formally and comprehensively. So it is necessary to give a depth analysis on policy conflict. Therefore, the paper presents a generic model that represents IPSec security policy semantics. Based on it, we classify and define conflicts formally that may exist in a single IPSec device or in some tunnels between different IPSec devices. That the conflict analysis is comprehensive is proved also. The research provides theoretical foundation for policy conflict detection and prevention in IPSec policy configuration.

Taking the Laguerre-Gaussian (L-G) beam for example, the changes in the degree of paraxiality for monochromatic beams are studied in detail. It is shown that the beam parameters, including mode indiex, relative waist width, propagation through a paraxial ABCD optical system, and diffraction by an aperture may change the degree of paraxiality. But the degree of paraxiality remains unchanged in free-space propagation. The results are illustrated by numerical examples and interpreted in physics by relating the degree of beam paraxiality with the far-field divergence angle.