yz Sun

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Susan Condor

Loughborough University

Tamson Pietsch

University of Technology Sydney

David Knights

Lancaster University

ABDUL AZEEZ M OLAYEMI, MCL, PhD, MCIArb

University of Malaya, Malaysia

Ahmed Musabeh

Islamic University of Gaza

HELMI SUMILAN

Universiti Malaysia Sarawak (UNIMAS)

Kwong Chee Kueng

UPM - Universiti Putra Malaysia

kamaal Allil

University Of Kalamoon

John M T Balmer

Brunel University

Luis M Villela

Universidad La Salle (Mexico)

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Papers by yz Sun

Interaction between center of dilation and penny-shaped crack in viscoelastic biomaterial

2006-2007 > Academic research: refereed > Refereed conference pape

Comparison of the clinical accuracy of cervical (C2-C7) pedicle screw insertion assisted by fluoroscopy, computed tomography-based navigation, and intraoperative three-dimensional C-arm navigation

Chinese medical journal, 2010

BACKGROUND The complicated anatomy of the cervical spine and the variation among pedicles reduces... more BACKGROUND The complicated anatomy of the cervical spine and the variation among pedicles reduces the accuracy and increases the risk of neurovascular complications associated with screw implantation in this region. In this study, we compared the accuracy of cervical (C2-C7) pedicle screw fixation assisted by X-ray fluoroscopy, computed tomography (CT)-based navigation, or intraoperative three-dimensional (3D) C-arm navigation. METHODS This prospective cohort study was performed in 82 consecutive patients who underwent cervical pedicle screw fixation. The accuracy of screw insertion was assessed by postoperative CT scan with 3D reconstruction. The accuracy of screw insertion was assessed as: excellent (screw completely within pedicle); acceptable (≤ 1 mm screw outside pedicle cortex); poor (> 1 mm screw outside pedicle cortex). RESULTS A total of 145 screws were inserted in 24 patients who underwent C-arm fluoroscopy. Of these, 96 screws (66.2%) were excellent, 37 (25.5%) were ac...

[Investigation of current demands for professional continuing medical education in ophthalmic nurses]

Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 2012

OBJECTIVE To investigate the current demands for professional continuing medical education (CME) ... more OBJECTIVE To investigate the current demands for professional continuing medical education (CME) in ophthalmic nurses and their influential factors, and to provide evidence for properly setting the curriculum of professional CME for nurses. METHODS Qualitative and quantitative analysis was performed on 60 nurses in an ophthalmic hospital by questionnaire survey and group interview. RESULTS Of the nurses surveyed, 49 (81.7%) thought the training time of professional CME needs to be adjusted, 40 (66.7%) referred to the training pattern, and 53 (88.3%) the training contents. The demanded courses of training mainly included professional nursing knowledge, professional nursing skills, and ophthalmic knowledge. Most nurses considered the influential factors for training were unreasonable training time and lack of applicability of some courses. CONCLUSION To improve the quality of professional CME for ophthalmic nurses, the training curriculum should be designed in consideration of ophthal...

[Study of pedicle screw placement assisted by intraoperative three-dimensional navigation in lumbar vertebrae with axial rotation]

Zhonghua wai ke za zhi [Chinese journal of surgery], 2010

OBJECTIVE To evaluate the effect of axial rotation of lumbar vertebrae on the accuracy of pedicle... more OBJECTIVE To evaluate the effect of axial rotation of lumbar vertebrae on the accuracy of pedicle screw placement using the traditional method, as well as to assess the value of intraoperative three-dimensional (3D) navigation in improving the accuracy. METHODS Sixteen lumbar simulation models at different degrees of axial rotation (0°, 5°, 10° and 20°), with every four assigned with the same degree, were equally divided into two groups (traditional method group and intraoperative 3D navigation group). Random placement of pedicle screws was carried out, followed by CT scan postoperatively. Then the outer pedicle cortex contours were depicted from reconstructed sectional pedicle images using Photoshop. The accuracy of pedicle screw placement was evaluated by determining the interrelationship between screw trajectory and pedicle cortex (qualitative) and measuring the shortest distance from pedicle screw axis to outer cortex of the pedicle (quantitative). RESULTS Eighty pedicle screws ...

Big Data Analysis of Emergency Medical Service Applied to Determine the Survival Rate Effective Factors and Predict the Ambulance Time Variables 1

Emergency medical service (EMS) takesan important part in out-of-hospital cases,and it takes deci... more Emergency medical service (EMS) takesan important part in out-of-hospital cases,and it takes decisively effect to patients’ mortality rate. There are five factors have been scrutinized in this paper with large database to determine the correlation and effectiveness to survival rate, and also the difference between urban and suburban area. Seven years from 2007 to 2013 emergency record have conducted in study. Via applying analysis of variance (ANOVA), age, gender, response time, on-scene time and transportation time were used to be the analysis condition in survival rate and urban/suburban difference. Furthermore, age, gender, population density and total ambulance number were used as inputs to predict time outputs of response time, on-scene time, transportation time with artificial neural network (ANN). There are significant differences in all five factors of 7 years analysis, with age have the highest correlation (Pearson = -0.059), and onscene time second highest (Pearson = -0.03...

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Crack propagation of interfacial peeny-shaped crack in viscoelastic biomaterial

2004-2005 > Academic research: refereed > Refereed conference pape

Phase Relationship, Structure and Cationic Distribution of Oxides in the Mn3O4-Fe2O3 System Synthesized at 1200 ℃

Acta Physico-Chimica Sinica, 2012

A series of oxides in the Mn3O4-Fe2O3 system have been synthesized at 1200°C in air, followed by ... more A series of oxides in the Mn3O4-Fe2O3 system have been synthesized at 1200°C in air, followed by quenching to room temperature. Three solid solutions, Mn3-3xFe3xO4 (0.00£x£0.278), Mn3-3xFe3xO4(0.291£ x£0.667), and Mn2-2xFe2xO3 (0.89£x£1.00), have been identified by powder X-ray diffraction (XRD). Rietveld refinement of the XRD data show that the solids belong to the hausmannite phase with the space group I41/ amd, the spinel phase with the space group Fd3m, and the hematite phase with the space group R3c, respectively. Between these are two-phase regions. 57 Fe Mössbauer spectra indicate that the valence state of Fe in the three solid solutions is +3; in addition, there are two crystallographically independent Fe 3 + ions in the unit cells of the hausmannite and spinel phases, and one Fe 3+ in the hematite phase. Analyses of 57 Fe Mössbauer spectra and X-ray photoelectron spectra (XPS) revealed that a formula of Mn 2+ 1-xFex 3+ [Mnx 2+ Fe 3+ x Mn 3+ 2-3x] O4 describes the cation distribution of both the hausmannite and spinel phases, but that for the hematite [Article] www.whxb.pku.edu.cn

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Measurement of the matrix elements for the decays η′→ηπ+π− and η′→ηπ0π0

Physical Review D, 2018

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Order and Revolt: Debating the Principles of Eastern and Western Social Thought

Application of combination weight and fuzzy optimization in UHV transmission mode evaluation

2012 IEEE International Conference on Power System Technology (POWERCON), 2012

Long-distance and large-scale power transmission through ultra-high voltage (UHV) channels is nec... more Long-distance and large-scale power transmission through ultra-high voltage (UHV) channels is necessary in the foreseeable future of China due to the imbalance between economic development and energy distribution. Mode selection for UHV power transmission, considered as a multi-objective decision-making problem, is the foundation of UHV network planning. Based on the combination weights and the proposed index system and fuzzy optimization techniques, a comprehensive evaluation method of UHV AC/DC transmission modes is presented in the paper. The method has proved its effectiveness in the successful application of Hubei province of China.

<title>Finite element simulation of materials's stress and strain in micro-milling</title>

Fourth International Seminar on Modern Cutting and Measurement Engineering, 2010

Center of Dilatation and Penny-Shaped Crack in Viscoelastic Bimaterial

Fracture of Nano and Engineering Materials and Structures

This paper derives analytically the stress intensity factors (SIFs) of a frictional interfacial p... more This paper derives analytically the stress intensity factors (SIFs) of a frictional interfacial pennyshaped crack in a viscoleastic bimaterial subject to the action of a center of dilatation (see Fig. 1). This work is an extension of the 2-D problem considered by Chau and Wong [1].The standard linear viscoelastic solid or “three-parameter-viscoelastic-model” is adopted. Using the correspondence principle, the problem

Factors Effect on Vortex Torque of Aerostatic Bearings

Advanced Materials Research, 2010

In order to improve the drift accuracy of aerostatic bearings, the air supply pressure and manufa... more In order to improve the drift accuracy of aerostatic bearings, the air supply pressure and manufacturing errors effect on vortex torque of aerostatic bearings were studied by using the finite element method. This paper analyzed the influence of air supply pressure on vortex torque, in view of elliptical error, incline error of throttle slit and radial eccentricity ratio exist. The quadratic regression orthogonal design was adopted to establish function expression of vortex torque among air supply pressure, elliptical error, incline error of throttle slit and radial eccentricity ratio. In research, the simulation vortex torque values of a certain aerostatic bearing are compared with the experimental values. The predicted characteristics are in good agreement with experimental results and then prove that the finite element model, the method used to solve the problem and the function expression obtained are correct. The research has great significance for predicting performance and cho...

The Design of Control System for Auto-Packing Pantyhose Machine

Advanced Materials Research, 2011

In this article, the Control System based on the OMRON CJIM series PLC has been discussed, which ... more In this article, the Control System based on the OMRON CJIM series PLC has been discussed, which meets requirements of the auto-packing pantyhose machine well. The principle and hardware configuration of the Control System were introduced, and the assignment of input/output, control programs as well as Human-machine Interface were designed. Importantly, the speed and quality of the packing of pantyhose were successfully enhanced, so this control system can effectively reduce the human resources.

OSL chronology of traditional zinc smelting activity in Yunnan province, southwest China

Quaternary Geochronology, 2015

The production of zinc has played an important role in both the technological and the economic hi... more The production of zinc has played an important role in both the technological and the economic history of ancient china. However, the lack of studies on zinc smelting remains with convincing chronology limits our understanding on the history of zinc production. Our recent field survey in Yunnan province, southwest china, has discovered zinc-smelting sites in Qiaojia County. The location is in the Jinsha River Valley, which has abundant lead, zinc, copper and mineral coals. Large numbers of crucible and slags were excavated, which indicates a large scale of zinc production in the region. A profile of 10 layers containing slag pellets altered with fluvial sediments presents clear evidence of a series of zinc smelting events. The ages of both the fluvial sediment and slag layers have been obtained using luminescence dating. Detailed chronology indicates that large scale of zinc production in this area can be traced back to late Qing Dynasty (AD 1854).

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Managing Service-Oriented Grids: Experiences from VEGA System Software

Lecture Notes in Computer Science, 2004

Recent work towards a standard based, service oriented Grid represents the convergence of distrib... more Recent work towards a standard based, service oriented Grid represents the convergence of distributed computing technologies from e-Science and e-Commerce communities. A global service management system in such context is required to achieve efficient resource sharing and collaborative service provisioning. This paper presents VEGA system software, a novel grid platform that combines experiences from operating system design and current IP networks. VEGA is distinguished by its two design principles: a) ease of use. By service virtualization, VEGA provides users such a location-independent way to access services that grid applications could transparently benefit from systematic load balancing and error recovery. b) ease of deployment. The architecture of VEGA is fully decentralized without sacrificing efficiency, thanks to the mechanism of resource routing. The concept of grid adapters is developed to make joining and accessing the Grid a 'plug-and-play' process. VEGA has been implemented on Web Service platforms and all its components are OGSI-compliant services. To evaluate the overhead and performance of VEGA, we conducted experiments of two categories of benchmark set in a real size Grid environment. The results have shown that VEGA provides an efficient service discovery and selection framework with a reasonable overhead.

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Insight and reduction of MapReduce stragglers in heterogeneous environment

2013 IEEE International Conference on Cluster Computing (CLUSTER), 2013

Speculative and clone execution are existing techniques to overcome the problems of task straggle... more Speculative and clone execution are existing techniques to overcome the problems of task stragglers and performance degradation in heterogeneous clusters for big data processing. In this paper, we propose an alternative approach to solving the problems based on analysis results of profiling and the relations of the system parameters. Our approach adj usts the amount of task slots of nodes dynamically to match the processing power of the nodes, according to current task progress rate and resource utilization. It contrasts with the existing techniques by attempting to prevent task stragglers from occurring in the first place through maintaining a balance between resource supply and demand. We have implemented this method in the Hadoop MapReduce platform, and the TPC-H benchmark results show that it achieves 20-30% performance improvement and 35-88% less stragglers than existing techniques.

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Indigenous Lactic Acid Bacteria in Fish and Crustaceans

Aquaculture Nutrition, 2014

ABSTRACT The gut microbiota of fish plays an important role in mediating and stimulating host gas... more ABSTRACT The gut microbiota of fish plays an important role in mediating and stimulating host gastrointestinal (GI) development, aiding digestive function, maintaining mucosal tolerance, stimulating the host immune response and providing a level of protection against gastric infections. Lactic acid bacteria (LAB), which are generally considered as favourable bacteria due to their abilities to antagonize bacterial pathogens, are often identified as components of the gut microbiota of fish. Members of the Lactobacillus, Lactococcus, Leuconostoc, Enterococcus and Streptococcus genera have been isolated by culture-dependent methods as minor components of the indigenous GI populations in salmonids. Carnobacterium species, such as C. (piscicola) maltaromaticum, C. mobile, C. divergens, C. alterfunitum-like, C. inhibens and Carnobacterium spp., have been thought to be the dominant/core LAB genus in salmonids and can account for up to 15% of the viable culturable populations. Recent culture-independent molecular analyses have led us to question whether Carnobacterium truly are the most prevalent LAB genus in salmonids. Techniques such as denaturing gradient gel electrophoresis (DGGE), temporal temperature gradient electrophoresis (TTGE), and 16S rRNA clone libraries confirm the presence of Carnobacterium spp. but have also identified Lactobacillus spp., Streptococcus spp., Lactococcus lactis, Weissella cibaria and Pediococcus sp. as indigenous species. In warm water fish species (e.g. sturgeon, zebrafish, carp, tilapia, grouper and cobia etc.), members of the genera Lactobacillus, Lactococcus, Enterococcus, Pediococcus, Leuconostoc and Weissella have commonly been identified as the indigenous GI populations, while Carnobacterium species have rarely been identified. The dominant LAB in shellfish belong to the Pediococcus and Lactobacillus genera, including the species Lb. plantarum, Lb. acidophilus, Lb. bulgaricus, Lb. sporogenes, Lb. casei, Lb. brevis, Lb. helveticus and P. acidilactici. Although Bifidobacterium are commonly reported in the GI tract of mammals and terrestrial organisms, they are seldom reported in fish. Future experiments should attempt to quantify these bacterial groups using qPCR, FISH, metagenetic and metagenomic approaches. The importance of these bacteria in mediating host benefits, how they respond to dietary and environmental changes, and their potential to antagonize enteric pathogens, should be topics of future investigations.

Finite Element Analysis of Static Characteristics of a Hydrostatic Guideway and its Effect Factors

Advanced Materials Research, 2011

Guide ways of ultra-precision machine tools always have sufficient stiffness and guiding precisio... more Guide ways of ultra-precision machine tools always have sufficient stiffness and guiding precision. But guide way rails deformation caused by oil film pressure and slider offset lead to oil film clearance change which affects static stiffness and guiding precision. An inside-slider hydrostatic guide way is designed, and its static characteristics are analyzed. As a result, the effect of slider offset on stiffness and guiding precisions is obtained. A FE model of guide way is established. An elastomer of virtual material properties is used to simulate oil film, so that the relationship between oil film clearance and pressure can be represented in a certain range. Static stiffness and guiding precision are obtained considering deformation of rails.

[Strategies of the study on herb genome program]

Yao xue xue bao = Acta pharmaceutica Sinica, 2010

Herb Genome Program (HerbGP) includes a series of projects on whole genome sequencing (WGS) and p... more Herb Genome Program (HerbGP) includes a series of projects on whole genome sequencing (WGS) and post-genomics research of medicinal plants with unique secondary metabolism pathways or/and those of great medical and pharmaceutical importance. In this paper, we systematically discussed the strategy of HerbGP, from species selection, whole-genome sequencing, assembly and bioinformatics analysis, to postgenomics research. HerbGP will push study on Chinese traditional medicines into the front field of life science, by selecting a series of plants with unique secondary metabolism pathways as models and introducing "omics" methods into the research of these medicinal plants. HerbGP will provide great opportunities for China to be the leader in the basic research field of traditional Chinese medicine. HerbGP shall also have significant impacts on the R&D of natural medicines and the development of medicinal farming by analysis of secondary metabolic pathways and selection of culti...

Interaction between center of dilation and penny-shaped crack in viscoelastic biomaterial

2006-2007 > Academic research: refereed > Refereed conference pape

Comparison of the clinical accuracy of cervical (C2-C7) pedicle screw insertion assisted by fluoroscopy, computed tomography-based navigation, and intraoperative three-dimensional C-arm navigation

Chinese medical journal, 2010

[Investigation of current demands for professional continuing medical education in ophthalmic nurses]

Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 2012