bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Weekly versus Daily Iron and Folic Acid Supplementation on the Haematological Status of Pregnant Women
Authors: Haque N , Karim A , Anwar AKM Nurul
Published: February 2012

In many developing countries including Bangladesh daily iron and folic acid supplement is given to pregnant women through health care services but with limited success. Poor compliance, inefficiency of health care services and poor quality of supplemented tablets have been implicated for such poor outcome. Several studies reported that once or twice weekly instead of daily supplementation were equally effective with reduced gastrointestinal side effects and improved patient compliance. In this study effect of once weekly administration of 120 mg of iron and 0.5 mg of folic acid was compared with same dose of daily iron and folic acid supplementation. 600 anemic pregnant women (Hb level at or below 11.9 g/ dl) at 20 weeks±15 days of pregnancy were randomly selected and allocated to one of the two treatment groups. Haematological parameters (Blood Hb, MCV and MCHC) were measured at baseline and repeated at 28th week, 36th weeks ofpregnancy and at delivery. Because of significant drop out at antenatal visits, only 57 subjects (25 in daily group and 32 in weekly group) could be followed up till delivery at the hospital. At baseline, no significant differences in haematological parameters existed between the two treatment groups except for MCV, suggesting that study participants in both groups had more or less similar haematological status at baseline. With iron and folic acid supplementation from 20th week ±15 days of pregnancy through delivery, there had been significant improvement in both Hb level and MCV in both the groups and the improvement was not significantly different between the two groups, suggesting that both weekly and daily supplementation had similar effects. Significance of this and other findings have been discussed. Further studies with larger samples have been suggested before recommending weekly supplementation for routine use.DOI: http://dx.doi.org/10.3329/bmj.v39i3.9944 BMJ 2010; 39(3)
Effect of Tamsulosin on Stone Clearance after Extra-corporeal Shock Wave Lithotripsy
Authors: Hossain MZ , Biswas NP , Islam MS , Hossain MZ , Shameem IA , Kibria S
Published: February 2012

This prospective study was performed to observe effect of Tamsulosin on stone clearance after Extra-corporeal Shock Wave Lithotripsy (ESWL) for renal stones having size 6-20 mm. According to selection criterion total 80 patients with renal stones were divided into two groups. In group l, 40 patients treated with traditional hydrotherapy after ESWL and in group 2 another 40 patients were treated with additional Tamsulosin. In-group 1, there were 25 male and 15 female patients and in group 2, male and female patients were 30 and 10 respectively. Without considering the stone size within 3 weeks after ESWL stone clearance in group 1 and 2 was 57.50 and 80.00 percent respectively (P<0.05). Considering the stone size, stone clearance in group 1 was 50% and 33.3% among smaller (6-10 mm) and larger (11-20 mm) stones and in group 2 was 50% and 66.7% among smaller and larger stone respectively (P>0.05). In cases of smaller stones, clearance was 100% and 77.8% among group 1 and 2 respectively without any significant difference (P>0.05). But in larger stones, stone clearance was 34.60% and 81.8% among group 1 and 2 respectively and there was a statistically significant difference in clearance between the groups (P<0.05). Morbidity was significantly lower when ESWL was combined with Tamsulosin. Requirement of additional interventional procedures were significantly higher in group 1 (P<0.05). Complications were less common in group 2 than group 1. Haematuria and lower urinary tract symptoms were equally common in both groups. DOI: http://dx.doi.org/10.3329/bmj.v40i1.9959 BMJ 2011; 40(1): 27-32
Treatment Pattern of Acute Respiratory Tract Infections in General Practice with 3rd generation Oral Cefixime in Bangladesh
Authors: Hossain SZ , Khan RF , Barua UK , Sobhan MJ
Published: February 2012

Respiratory tract infections (RTIs) are a major health problem in developing countries. RTIs are the most common reason for physician visits and prescription of antibiotics. Cefixime is quickly establishing as a potent broad-spectrum antibiotic with a variety of indications. This observational study was designed to describe the treatment pattern of third generation oral cefixime in managing RTIs in general practice. This noncontrolled, multicenter, observational registry was carried out from March 2009 to July 2010. During this period 2400 patients aged 3 years to 76 years suffering from RTIs were enrolled by general physicians throughout the country. Study variable were socio demographic, signs and symptoms, clinical diagnosis, investigations, antimicrobial prescribed and clinical outcome. Clinical outcome was determined based on improvement of signs and symptoms. Compliance, efficacy and tolerance were assessed on days 7 and 10. The enrolled patients were considered for analysis. The mean age was 26.59 (± 18.10) years and 62% of patients were male. Common presenting signs and symptoms were fever, cough, shortness of breath and increased sputum volume in 80%, 75%, 39%, and 12% respectively. From prescriptions, pneumonia, acute bronchitis, acute exacerbation of chronic bronchitis and lung abscess were the diagnosis in 42%, 26%, 24% and 3% of the prescriptions, respectively. Following the treatment with cefixime clinically cured, much improved and better were obtained in 77%, 21% and 2% respectively. Furthermore, the rate of adverse events were insignificant. The study showed clinical symptoms improved rapidly and high rates of clinical cure were achieved. More over, the rate of adverse events were relatively quite low. The results supports the use of cefixime for a variety of respiratory infections in adult and pediatric patients in Bangladesh. DOI: http://dx.doi.org/10.3329/bmj.v40i1.9962 BMJ 2011; 40(1): 39-42
Clinical Outcome of Posterior Fossa Tumor Surgery Without Preoperative Ventriculo-peritoneal Shunt
Authors: Islam MR , Islam KMT , Hossain M , Rashid MH , Dhakhal S , Khair A , Barua KK , Hossain MA
Published: February 2012

The aim of the study was to assess the clinical outcome of surgically treated patients with posterior fossa tumor with hydrocephalus with symptoms and sings of raised intracranial pressure without pre-operative ventriculo-peritoneal shunt by comparing two groups (one group-with pre-operative ventriculo-peritoneal shunt and other group-without preoperative ventriculo-peritoneal shunt) in respect to complications, duration of hospital stay and final outcome at 1 month post-operative follow up. This clinical study was carried out at the department of neurosurgery, BSMMU from November 2008 to April 2010 on patients with posterior fossa tumor with hydrocephalus with symptoms and signs of raised intracranial pressure (ICP) who underwent surgery without preoperative ventriculo-peritoneal shunt. A total of 32 patients were included in this study. Patients were divided into two groups, control group (group-A) underwent ventriculoperitoneal shunt prior to tumor surgery and experimental group (group-B) were not treated with ventriculo-peritoneal shunt prior to tumor surgery. Both groups were followed up during hospital stay and after 1 month of tumor resection. Clinical studies include analysis of the following parameters: i) duration of hospital stay, ii) post-operative complications include cerebrospinal fluid leakage, pseudomeningocele, seizure, meningitis, and shunt blockage and, iii) final outcome at 1 month follow up in modified karnofsky performance scale. We also observed whether or not, use of ventriculo-peritoneal shunt to drain cerebrospinal fluid was useful and safe. The mean duration of hospital stay were 95.1±12.6 days with ranged from 70 to 120 days and 71.5±12.6 days ranged from 36 to 88 days in group-A and group-B respectively. The majority of the patients had no complications in both group, which were 12(70.6%) and 9 (60.0%) in group A and group B respectively. Final outcome at 1 month follow up in modified karnofsky performance scale in both groups were similar. DOI: http://dx.doi.org/10.3329/bmj.v40i1.9963 BMJ 2011; 40(1): 43-47
Our Saviour Dionysos: Humanism and Theology in Gilbert Murray's Bakkhai
Authors: Perris Simon
Published: February 2012

This article analyses the 1902 translation of Euripides’ Bakkhai by the renowned scholar, internationalist, and popularizer of Greek drama, Gilbert Murray. In particular, Murray's syncretistic use of religious diction in the translation is contrasted with his secular humanist reading of the play: throughout the translation, pagan, Olympian polytheism is described in Christian terminology. I conclude that this apparent contradiction reflects the early twentieth-century literary-historical context in which Murray operated, and his own idiosyncratic, ritualist reading of the play and of Greek tragedy in general. Murray interpreted Bakkhai as a ‘secular mystery play’ in celebration of humanism, but he lacked the poetic resources to express this in verse without recourse to Christian phraseology. Within Murray's overall project of popularizing Greek drama, this translation stands as a significant, influential experiment in post-Victorian secular-mystical verse drama.
Predicting High or Low Transfer Efficiency of Photovoltaic Systems Using a Novel Hybrid Methodology Combining Rough Set Theory, Data Envelopment Analysis and Genetic Programming
Authors: Lee Yi-Shian , Tong Lee-Ing
Published: February 2012

Solar energy has become an important energy source in recent years as it generates less pollution than other energies. A photovoltaic (PV) system, which typically has many components, converts solar energy into electrical energy. With the development of advanced engineering technologies, the transfer efficiency of a PV system has been increased from low to high. The combination of components in a PV system influences its transfer efficiency. Therefore, when predicting the transfer efficiency of a PV system, one must consider the relationship among system components. This work accurately predicts whether transfer efficiency of a PV system is high or low using a novel hybrid model that combines rough set theory (RST), data envelopment analysis (DEA), and genetic programming (GP). Finally, real data-set are utilized to demonstrate the accuracy of the proposed method.
X-ray Photoelectron Spectroscopy (XPS) Depth Profiling for Evaluation of La2Zr2O7 Buffer Layer Capacity
Authors: Narayanan Vyshnavi , De Buysser Klaartje , Bruneel Els , Driessche Isabel van
Published: February 2012

Lanthanum zirconate (LZO) films from water-based precursors were deposited on Ni-5%W tape by chemical solution deposition. The buffer capacity of these layers includes the prevention of Ni oxidation of the substrate and Ni penetration towards the YBCO film which is detrimental for the superconducting properties. X-ray Photoelectron Spectroscopy depth profiling was used to study the barrier efficiency before and after an additional oxygen annealing step, which simulates the thermal treatment for YBCO thin film synthesis. Measurements revealed that the thermal treatment in presence of oxygen could severely increase Ni diffusion. Nonetheless it was shown that from the water-based precursors’ buffer layers with sufficient barrier capacity towards Ni penetration could be synthesized if the layers meet a certain critical thickness and density.
Scopararanes C–G: New Oxygenated Pimarane Diterpenes from the Marine Sediment-Derived Fungus Eutypella scoparia FS26
Authors: Sun Li , Li Dongli , Tao Meihua , Chen Yuchan , Dan Feijun , Zhang Weimin
Published: February 2012

Five new oxygenated pimarane diterpenes, named scopararanes C–G (1–5) were isolated from the culture of a marine sediment-derived fungus Eutypella scoparia FS26 obtained from the South China Sea. The structures of these compounds were established on the basis of extensive spectroscopic analysis. The absolute configurations of compounds 1–5, were determined by CD spectroscopic analysis and comparison with literature data. All isolated compounds (1–5) were evaluated for their cytotoxic activities against MCF-7, NCI-H460, and SF-268 tumor cell lines by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) method.
The BAR Domain Superfamily Proteins from Subcellular Structures to Human Diseases
Authors: Safari Fatemeh , Suetsugu Shiro
Published: February 2012

Eukaryotic cells have complicated membrane systems. The outermost plasma membrane contains various substructures, such as invaginations and protrusions, which are involved in endocytosis and cell migration. Moreover, the intracellular membrane compartments, such as autophagosomes and endosomes, are essential for cellular viability. The Bin-Amphiphysin-Rvs167 (BAR) domain superfamily proteins are important players in membrane remodeling through their structurally determined membrane binding surfaces. A variety of BAR domain superfamily proteins exist, and each family member appears to be involved in the formation of certain subcellular structures or intracellular membrane compartments. Most of the BAR domain superfamily proteins contain SH3 domains, which bind to the membrane scission molecule, dynamin, as well as the actin regulatory WASP/WAVE proteins and several signal transduction molecules, providing possible links between the membrane and the cytoskeleton or other machineries. In this review, we summarize the current information about each BAR superfamily protein with an SH3 domain(s). The involvement of BAR domain superfamily proteins in various diseases is also discussed.
Comparison of four techniques for synoviocentesis of the equine digital flexor tendon sheath: A cadaveric study
Authors: Oosterlinck M. , Pille F. , Valère A. , Martens A. , Jordana M.
Published: February 2012

Objective: To compare four different techniques for synoviocentesis of the equine digital flexor tendon sheath (DFTS).

Methods: Fifteen inexperienced operators performed each of the following injection techniques on two cadaveric limbs: Proximal (at the proximal recess of the DFTS), Axial (axial to the proximal sesamoid bone), Base (at the base of the proximal sesamoid bone), and Distal (at the pastern). The number of attempts needed before the needle was assumed to be correctly positioned into the DFTS was recorded and 10 ml of methylene blue was injected. The limbs were dissected to determine the presence of methylene blue in the DFTS, the distance between the needle entrance point and the lateral palmar or plantar (digital) nerve, the degree of subcutaneous leakage and the distance between the border of the leakage zone and the lateral digital nerve.

Results: The Axial (29/30) and Distal (25/30) approaches had the highest numbers of successful injections. The median number of attempts was highest for the Axial approach. The distances from the injection point and from the border of the leakage zone to the lateral digital nerve were longer for Distal and Axial approaches.

Clinical relevance: In the hands of inexperienced operators, the Axial approach was the most successful technique for injection of the equine DFTS. Sparse subcutaneous leakage and larger distance to the nerve when using this technique might decrease the risk of inadvertent palmar or plantar digital nerve desensitisation when performing DFTS analgesia.
L'action aménagiste au Maroc entre héritages, permanences et bifurcations
Authors: Louargant Sophie , Matteudi Emmanuel , Roux Emmanuel
Published: February 2012

Résumé Ce texte s’appuie sur les expériences conjointes de deux expertises territoriales réalisées au Maroc (FSP/Agenda 21) et propose de construire une approche comparée de la circulation des outils et de leur réception auprès des acteurs de l’aménagement du territoire. Les perspectives théoriques visent à mettre en valeur les capacités d’action des territoires, en se penchant sur les liens « de dépendance » dans l’action aménagiste, la diffusion des modèles et outils internationaux inscrits dans le système de gouvernement et de gouvernance propre au Maroc. La formalisation des formes et figures de l’expertise montre un renforcement des modèles existants, une place prépondérante du marché de l’expertise et une émergence encore « fébrile » de formes plus émancipées.
La polarité urbaine : analyse de la transposabilité d'un indicateur et d'un concept
Authors: Samson Ivan
Published: February 2012

Résumé La relation entre urbanisation et développement est un nouveau paradigme majeur dans le sud au début du XXI e siècle. Cette nouvelle équation pose évidemment de nouvelles et redoutables questions. On tente ici d’apporter quelques réponses sur la base d’études empiriques conduites depuis presque vingt ans. Le papier revient sur la pratique de l’auteur d’analyse et de la mesure de la polarité urbaine en Allemagne de l’Est, en Algérie et en Afrique subsaharienne dans une double perspective : s’interroger sur la mesure des effets des agglomérations dans un contexte de globalisation ; s’interroger sur la portée de ces mesures et des concepts qui les sous-tendent, et donc sur la transposabilité à l’Est, en Afrique du Nord et en Afrique subsaharienne des outils développés en Europe occidentale dans la science régionale. La principale conclusion est que si la polarité urbaine est bien un des principaux facteurs explicatifs des performances régionales au nord, c’est plus compliqué à l’est et au sud. En Algérie cette variable n’a pas d’effet sur les performances régionales, contrairement à d’autres indicateurs comme l’agglomération et la métropolisation, et en Afrique subsaharienne l’effet-ville est manifeste mais tend à s’émousser. Cela souligne la nécessité de revisiter pour les PED la réflexion sur l’effet développant des villes et sur leur transcription spatiale.
Seasonal dynamics and annual production of Cystoseira crinita (Fucales: Ochrophyta)-dominated assemblages from the northwestern Mediterranean
Authors: Sales Marta , Ballesteros Enric
Published: February 2012

Algae of the genus Cystoseira are the main engineering species on Mediterranean shallow rocky bottoms. Cystoseira crinita is an endemic species which grows in shallow and rather sheltered environments throughout the entire Mediterranean Sea. In order to investigate its role in structuring benthic assemblages and as a primary producer, three localities were sampled every two months during one year in Menorca (Balearic Islands). The total biomass of Cystoseira crinita-dominated assemblages showed a seasonal pattern mainly due to temporal changes in the biomass of the dominant alga. The assemblages also showed seasonality in their species richness (number of species per sample). Both total biomass and species richness peaked in summer, and their lowest values were recorded in winter. Despite these temporal patterns, C. crinita-dominated assemblages from Menorca showed reduced seasonality compared to C. crinita-dominated assemblages in other areas in the western Mediterranean, as C. crinita specimens kept their branches throughout the entire year. Total annual production of Cystoseira crinita branches and cauloids was around 1230 g dwt m–2, which is higher than that of other Cystoseira species living in sheltered areas but much lower than that of Cystoseira species growing on exposed shores. Production was highly seasonal, and was highest in spring and null in winter and late summer.
Novel Torus-Involute Gear Transmission
Authors: Liu Lei , Huang Zhu Qing
Published: February 2012

A novel torus-involute gear transmission is presented in this paper. There are two types of tooth profiles for torus-involute gears: convex tooth and concave tooth. Torus-involute gears are non-sensitive to axial misalignments and allow variable shaft angle without meshing interference. Based on revealing of essence for tooth profiles, introducing the parameter t and discretizing this type of gear into tiny linear continuous corrected gears, a design method is proposed. To testify whether the transmission ratio of torus-involute gear transmission is constant, simulation is implemented in commercial codes ADAMS. The computed results show that this novel gear drive can achieve a constant transmission ratio with variable shaft angle.
The Analysis on Sports Starting Technology Based on Biomechanical Analysis Method
Authors: Ma Bin Hai
Published: February 2012

At modern science and technology information-based society medium, at various athletics science in, according to living creature technical sport biomechanics technique at modern athletics technique in, for raise the athlete's performance at and sport technique, and excellent turn to exercise an equipments to develop an important function.Therefore, best sport analysis can provide the best sport carriage and sport technical ability, thus the training result of the exaltation athlete of science.The textual purpose is to run a technique according to the biomechanics research athletics, train the theory of providing science for the athlete's science basis, promote the development of athletics business thus.
Application of NASTRAN Finite Element Analysis and Experimental Test on Loading Machine Structure Strength Analysis
Authors: Tian Qing Song
Published: February 2012

This paper main aim to explain the finite element analysis and experimental test on loading machine structure strength analysis method of finite element analysis, test data as the input and boundary conditions of finite element calculation model of collaborative test accuracy. The finite element analysis and calculation conditions of test conditions can be used as a supplement and perfection.
Development on Pill Feeding Vehicle Control System for Packaging Workshop of Traditional Chinese Medicine
Authors: Yan Ru
Published: February 2012

Automatic vehicle is a very efficient way of material conveying in modern industry, control system design is the key part of automatic vehicle. To devise delivery vehicle control system using Single-chip Microcomputer, wireless communication technology, which was applied to traditional Chinese Medicine pills packaging workshop. To study control system overall project, hardware design and software design including the main program, wireless communication module etc.To achieve automatic delivery in the Chinese Medicine pills production line.
The Application of SIFT Algorithm in Blind Road Environmental Image Matching
Authors: Shi Shuo , Yu Ming , Xue Cui Hong , Zhou Ying
Published: February 2012

Image Matching is a key technology in the intelligent navigation system for the blind, which is based on the computer video. The images of moving blind people, collected at real time, have variety of changes in light, rotation, scaling, etc. Against this feature, we propose a practical matching algorithm, which is based on the SIFT (Scale Invariant, Feature Transform). That is the image matching algorithm. We focus on the algorithm of the SIFT feature extraction and matching, and obtain the feature points of the image through feature extraction algorithm. We verify the effect of the algorithm by selecting practical images with rotation, scaling and different light. The result is that this method can get better matches for the blind road environmental image.
Influence of Blade Thickness on Unsteady Propeller Forces
Authors: Chen Ming Zhou , Zhou Qi Dou , Xie Zhi Yong
Published: February 2012

Unsteady CFD method based on realizable k-ε model is used for predicting unsteady forces of propeller working in non-uniform inflow. CFD method was firstly validated by cases of propeller P4118 in 3-cycle and 4-cycle inflow. The influence of the little difference between experiment and CFD flow field on propeller unsteady forces was estimated by 2D unsteady method which has been proved to be correct. The results of CFD agree well with experimental data. Then several propellers with different blade thickness are simulated, the results show that, as a whole, average thrust, torque and unsteady forces decrease slightly as blade thickness increases.
3C Product Design by Customers Based on Geek Net Groups
Authors: Li Pu Hong , Fan Zhi Jun
Published: February 2012

Individuation is the inevitable trend of product design, especially 3C product. So the further can the clients participate in the product design, the more product individuation is. Confronted with the increasing individual demands of customers, manufacturers should think it more important to increase the individuation of their products by doing their best to enable the clients take part fart- hest in the 3C products design with the efficiency of mass production. The characteristics of 3C product design and the customers - "Geek" network groups are summarized at first. Then, as an example of MEIZU M9 mobile phone, design by customers-Geek to the innovation design of 3C product is analyzed. Finally, based on these questions, the methods and problems for the production innovation of 3C manufacturers are described. It provides theoretic basic for studying customers how to participate in design and the system development of design by customers.
Analysis of Contact Stress on Coating Based upon Hertz Theory
Authors: Wang Li Ping , Luo Hao Dong , Cui Yan Mei
Published: February 2012

It is necessary to study the mechanics performance of thin coating, which composite the prerequisite of coating’s application. The contact stresses are important factors for the design of hard coating/substrate because the failure of the hard coating is usually caused by these stresses. The finite element method is applied to simulate the stress of coating with contact load based on Hertz contact theory. The accuracy of model was initially tested in systems without a film. The contact stresses have been calculated based on various coating/substrate modulus ratios and the coating thickness. Results show that coating thickness changes from 1.5um to 3um, the effects of coating/substrate combination is perfect. The research has important guiding significance for the application of coating.
Node Behavior Trust Evaluation Model Based on Sliding Window
Authors: Zhu Qi
Published: February 2012

In order to improve confidence of the node behavior the credibility assessing, this paper presents the nodes behavior of the trust evaluation mechanism based on sliding window, Through the sliding window Assessment strategies to ensure the trust assessment to meet the node behavior assessment principles, Assessment strategies is good combination of confidence assessment method of the subjective and assessment content of the objectivity to ensure contacts number ofa large number of nodes (Nmin) at the same time maintaining good scalability, trust assessment reflects the importance of the recent behavior and the attenuation of long-term behavior, with a "slow rise" and "fast drop" feature, the algorithm with good against fraud and punishment of malicious nodes .
The Application Research in the Evaluation of Sports Teaching Quality Based on the Analytic Hierarchy Process
Authors: Wang Xian Feng , Wang Xiang Qi
Published: February 2012

The sports teaching quality assessment is a regular schools of higher learning education evaluation of a part, is promoting sports course building and improve the quality of education is an important measures. The current stage of evaluation method is uneven, so need to build a simple and effective, scientific and reasonable evaluation methods to measure the school sports teaching quality. The article to the analytic hierarchy process in the sports teaching the application of quality evaluation carried on the preliminary discussion, put forward the sports teaching quality hierarchical system, and establish the teaching quality assessment of the mathematical model, through the weight coefficient of each index system, more scientific and objective to evaluate teaching quality, easy operation, which is of great use value.
A Request Distribution Strategy Based on Static Time Interval
Authors: Xie Xiao Ling , Zhao Yue Long , Pan Min
Published: February 2012

Cluster has become a new generation of distributed system. Among the server cluster technologies, request distribution technology is used to distribute requests among server nodes, providing support to large-scale concurrent access to server cluster. In order to overcome the weakness of existing request distribution strategies for server cluster in average response time and computation cost, this paper proposes a request distribution strategy based on static time interval. Its basic idea is that it divides the update interval into several subintervals and introduces randomness into the selection of server node for the requests arrived in a subinterval. We give an implementation of the strategy and use MATLAB as the simulation platform to carry out simulation experiments in testing the performance of the strategy. Our theoretical analysis and experimental results show that, the strategy we propose achieves shorter average waiting time, more convenient implementation and lower computation cost than other several existing request distribution strategies.
A SiGe HBT Variable Gain Amplifier for Wireless Receiver System with On-Chip Filter
Authors: Zhang Wei Jia , Wang Bo
Published: February 2012

A using SiGe HBT variable gain amplifier (VGA) with filtering for wireless receiver system is presented in this paper. The VGA consists of three stages. The first stage is the gain control stage, and the second stage is the fixed gain stage. The third is the GM-C filter. The VGA is driven by a 3.3-V power supply, and linear gain control range varying is from 26 dB to 62dB. When control voltage varies from 0 to 1.8V. The input 1-dB compression point is -4dBm at minimum gain. The VGA is fabricated in a 0.5 μm = 80GHz and =90GHz silicon germanium heterojunction transistor technology.
A Simple Linear Discrimination Algorithm for AD Patients and Normal Controls
Authors: Yan Yun Yi , Hu Guo Zhang , Guo Bao Long , He Yu Jie
Published: February 2012

One simple but effective discrimination method was presented in this paper to separate AD from normal controls. After detecting the thickness of cortex with highly significant difference, the mean and standard deviation of these vertices are computed to construct confidence intervals. We introduced one relax coefficients to control the width of intervals and by experiments the coefficients was optimized. Experiments results showed that using this simple method, the classification accuracy, sensitivity and specificity of Alzheimer’s disease versus normal controls could be as high as 85%, 88.89% and 93.84% respectively.
Analysis of the Impact of Government Characteristics on Emergency Management Information System Application
Authors: Chen Yu Mei , Lin Yu Ming
Published: February 2012

This study used a sample of 293 government workers. Based on Delone and McLean's IS success model, we constructed the scale for evaluating Emergency Management Information System (EMIS) applications success. It was found that there are five Critical Success Factors(CSFs) are significantly related, and from Pearson correlation coefficients that the level of government and personal role as a top leader were important government and personal factors associating with EMIS application success. It was also found that internal organization management, external policy environment, City level government (a dummy variable) and User as a top leader (a dummy variable) are final significant variables. As conclusion, the level of branches and its management style, the different department style, the application role, and the individual specialty will impact government’s EMIS application success.
Design and Application of New Mushroom Type Center Machine
Authors: Li Rong
Published: February 2012

In this paper we investigate the structure of the machine for high-precision radial tire production and design a new center machine with low-ring hub that can be adjusted. This new machine consists of Top Center Machine Assembly, Frame Assembly and Bottom Center Machine Assembly. The new design resolve the problem of compatibility of multi-specifications, make the procee of replacing bladder become convenient and improve the productivity of the machine.
Numerical Simulation of 2-D Two-Phase Flow Field Covered by Vegetation Dam Based on Fluent Software
Authors: Liu Feng , Ma Liang , Chen Liang Liang , Wei Guang Hui
Published: February 2012

In this paper, the hydrodynamic equation about the flow through plants has established through the physical model experiment and theory deduction, the hydraulic characteristics of vegetation dam has simulated with the established equation. The two-phase flow field of the water sink with plant dam overlay has simulated with software of FLUENT, and the free surface has been tracked with VOF method, the plant dam overlay districts has been simplified with many bores area method, and the infiltration rate has been determined with the pressure difference of before or after bores area. The simulation velocity magnitude is compared well with the measured data.
Wear Reliability Analysis Method Based on Random Process
Authors: Yan Yu Tao , Sun Zhi Li , Hu Guang Wei , Liu Li Fang
Published: February 2012

The random reliability analysis model for wear was established based on random process theory and wear research. The wear experiment scheme on load, sliding speed, surface hardness and bearing capacity of lubrication was instituted by the uniform design method, and carried out on a vertical universal friction/wear tester. The static wear predication model was established by the partial least squares based on test data. It is found that the wear extent obey to normal distribution by checkout of the probability paper and mathematic expectation function fitting and residuals distribution, the variance function fitting and residuals distribution based on the test data of random process. The reliability of definite working life was gained by calculating with established reliability model, and compared with test data, the analysis method is a valid method for wear reliability.
Computations of Hamiltonian Homeomorphisms under Symplectic Reduction in the New Sense
Authors: Sun Da Wei , Liu Jia Rui
Published: February 2012

This paper studies the extended Hofer norm of hamiltonian homeomorphisms on the symplectic quotient by a compact Lie group.The hamiltonian property is proved for the maps under the symplectic reduction, and the relation between the hamiltonian homeomorphism’s extended Hofer norm and the induced one is also shown in the new sense
Fractal–Based Newton Method and Mechanism Synthesis & Approximate Synthesis
Authors: Luo You Xin , Li Ling Fang
Published: February 2012

Many questions in natural science and engineering are transformed into nonlinear equations to be found, Newton iterative method is an important technique to one dimensional and multidimensional variables and iterative process exhibits sensitive dependence on initial guess point. For the first time, utilizing a fractal iteration system to produce initial value, a new method to find all solutions of the nonlinear equations was proposed. The numerical examples in linkage synthesis and approximate synthesis show that the method is correct and effective.
Three-Dimensional Wireless Sensor Network Localization Algorithm Based on DV-Hop
Authors: Wan Fu Cai , Shen Yu Ji
Published: February 2012

Node positioning technology in wireless sensor network plays an important role in the whole network, and a lot of scholars engage in this field. According to the background that wireless sensor network is applied in Three-Dimensional space, an improved algorithm is proposed in this paper. The algorithm makes the average distance of each hop more rational through choosing the external anchor nodes. After the achievement of the unknown nodes positioning, initial positioning location would be corrected in order to get a higher positioning accuracy. Simulation results show that the accuracy of the improved algorithm is 13% higher than the traditional DV-Hop algorithm.
The Determination of Best Bid Price Quotation Based on Game Theory
Authors: Xu Si Dong , Cai Xiao Li , Liu Wei
Published: February 2012

This article was based on game theory; the author analyzed the various factors affecting the game theory, including player.strategy set. pay off.equilibrium and orders of the game. Besides, the author used Nash equilibrium theory to analyze the determination of one's own bid price and estimate rival bid price function, finally determined the entire process of one's quotation function model. In the end the author used the established function model and analysis an example to verify the feasibility of the model.
Intelligent Household Application Base on Mobile Phone the Ultrasonic Nondestructive Testing Technology Based on the Signal Processing Technique
Authors: Wei Shu Peng
Published: February 2012

The ultrasonic nondestructive detection measurement techniques is so successful, it not only based on production and income measures of the wave, but also to the basis and the shrinkage of the waveform of get signal processing. Although the traditional time domain method can successfully sure small cracks, but you can't estimate the size of the crack, especially in the strong scattering noise to the influence of the after. Experimental results show that this algorithm not only has excellent performance, still can strong presence of noise in the signal processing, also can succeed estimate the size and location of the crack. In addition, this algorithm can be applied to ultrasonic nondestructive signal data compression.
Research of Automatic Marking on Access Skill Assessment Based on XML
Authors: Chen Yao Fei
Published: February 2012

In this paper a model of automatic marking on access skill operation based on XML is proposed after analyzing the existing logically formalized automatic marking technology. And the implementation principles and processes are introduced with focuses on two critical technical links: XML formalized expression and XML formalized automatic marking. Define the structure of table’s information and Get the information of table in access. Introduce the implementation of automatic marking. Practice proves that it is practical and feasible to automatically score skill operation on access database based on XML
Process Design of Tacking and Welding for Turbine Blades and Positioning Plates
Authors: Song Jin Hu
Published: February 2012

Agitator impeller consist of turbine blades, positioning plates, central axis, flange, blocking plate and steel by welding, It is a typical welded structure. In the production process easy to produce deformation, cracks, undercut, not fusion, porosity and other defects, affecting life,and it is important for tacking and welding for turbine blades and positioning plates. In order to prevent the generation of welding defects, to meet the design requirements, The process of tacking and welding for turbine blades and positioning plates is designed in this paper.
Integration and Implementation of Numerical Design and Manufacturing Data Management System for Beverage Bottle
Authors: Lv Chao , Pan Xiao Hong
Published: February 2012

To implement numeralization and automation during the manufacturing of beverage bottles, a data management system for the numerical design and manufacturing of beverage bottle was proposed, which was required in the process of the rheological tests, simulation of stretch-blow process, and the optimization of the processing parameters. Simultaneously, several key technologies were illustrated in detail, including the processing of the experimental data, the seamless integration of various systems, the data mining and optimization of processing parameters. Application of this system beneficially offers technical support to lessen the experimental workload, improve the manufacturing process, guide the operation in workshop, shorten the design cycle and improve the efficiency.
Modeling and Validation of Moving Deformable Barrier Model with Taper Section Beam Element
Authors: Cao Li Bo , Cheng Wen Tao , Zhang Rui Feng , Shao Jin Hua
Published: February 2012

To improve the precision of side impact simulation, MDB model with taper section beam element was established and validated under the GB20071-2006 regulation. The MDB model was used to simulate a side impact test with a production car. The velocities of five key points on the B pillar and the door were outputted and compared with the test data. Numerical results show that the MDB model which based on taper section beam element can meet the requirements of the regulation and is in line with the test data, thus getting a higher accuracy and better simulation application value.
Cultivate High Quality Creative Mining Engineering Talents Based on the Construction of Professional Characteristics
Authors: Kang Zhi Qiang , Wang Ying , Nan Feng
Published: February 2012

First of all, mining engineering construction must rationally determine the characteristics of professional development goals of mining engineering. Innovative talents training is the key of existence and development of safety engineering discipline, which is of great significance for mining engineering discipline. In order to train high-quality creative mining engineering talents with the mining characteristics and "based on fact, knowledge breadth, practical ability, and comprehensive high quality". The paper based on the construction of mining engineering professional characteristics development points from perfecting training plan strengthening the teaching staff, teaching contents and curriculum reform, improvement of education quality, relying on further improving the methods and measures of cultivating the high-quality creative talents. So that the students overall quality and level of creative has been greatly improved.
Design of the Conjugate Cam Induction Hardening Mechanism and Establishment of the Motion Controlling Mathematical Model
Authors: Li Zhong Hua , Tang Qian , Yan Di , Wu Jie
Published: February 2012

The common methods of cam induction hardening are discussed at present. By analyzing the basic motion law of conjugate cam, a new induction hardening mechanism is designed. The motion controlling mathematical model is built on the basis of the kinematic relationship of the transmission of the induction hardening mechanism. Through the mathematical model calculation, we can get angular velocity of the workbench, then realize that single axis on NC machine controls the inductor to make isometric uniform motion relative to the cam surface, so that the cam hardening depth distribution is uniform.
Analysis on Laser Welding of Hard Alloy Circular Saw Blades
Authors: Wu Qiang , Xu Lan Ying , Yuan Xu Bo , Li Yu Zhong
Published: February 2012

Based on a large number of CO2 laser welding tests to hard alloy saw blade cutter by PHC-1300 type laser of 1300W and TEM00 mode, and the laser welding parameters and weld microstructures were analyzed ,the mechanical performance tests were also done. The experimental results show that CO2 laser welding can improve combination strength and bearing capacity of the hard alloy circular saw blade cutter; the laser focal spot offset a distance from the weld line to the center of basal body, which can get the optimal weld line; selecting low carbon alloy steel as matrix material and selecting Co-based alloy as knife head lining material are suitable.
Advanced Method for Mechanical Reliability Design
Authors: Fu Xue Jie , Shi Bo Qiang , Li Teng Fei
Published: February 2012

The damage or deterioration of the mechanical components is a complex and non-linear evolutionary process, but this evolution was not included into the traditional mechanical design method. Therefore, the reliability’s accuracy rate declined over time by this method. To describe the actual situation, combining the time-dependent design method and the maximum predictable time theory, a new design method is presented. By using this method, the reliability of all time horizons can be gained to predict the trend of key parts’ reliability for all machines. This research can also provide a basis for maintenance of machine.
Study and Realize of High-Speed Data Transmission System Based on MODEM
Authors: Zhang Jing , Dong Wei
Published: February 2012

System uses micro-controller MSP430 as MCU of a whole system, using an embedded MODEM as a MODEM of data of system, MODEM connection with the microcontroller through the serial port, using another chip of microcontroller to implement a serial communication with PC interface in order to achieve the overall system configuration. The innovations of author: system uses the data achieved by MSP430F149 to transmission system,it has some versatility, it is through an embedded MODEM module connection with the UART of microcontroller for data transmission.
Implementation of the Real-Time Parameters Monitoring System for Underground Equipments Based on Panoramic Images
Authors: Shi Bo Qiang , Zhao Chen Guang , Hao Zhi Jun , Xu Ming Chong , Bian Chen Tong
Published: February 2012

Underground equipments in coal mine is a complex system, in order to ensure coal mine works safety, monitor the status of underground equipments is an important part in commanding and dispatching system. Monitoring system for underground equipments based on panoramic images, is combined with the static panoramic images of underground surrounding and real-time sensor data, not only realize real-time status monitoring for underground equipments, but also get a direct impression for underground surrounding. B/S mode is applied in the monitoring system, is convenient for users to monitor the equipments, decreases the load of the DB Server. Meantime it can reduce the waste of the resource. Therefore it is a simple and effective monitoring system.
Simulation of the Cracking Behavior for Fiber Reinforced Composite Materials with the Infulence of Depth-Width Ratio and Direction Angle
Authors: Luo Ji Xiang
Published: February 2012

Based on the Voronoi cell finite element can also reflect fiber reinforced composites interface to take off the layer and matrix crack propagation of the new cell (X-VCFEM cell)[1]. Combined with the re-mesh strategy and grid dynamic technology, Simulated analysis in different angles and different depth-width ratio, interface crack propagation for fiber reinforced composites, the results show that when 0˚< < 90˚, the horizontal tension increases with the increasing; When 90˚< < 180˚, the horizontal tension decreases with the increasing; And when =90˚, the horizontal tension was the largest; the horizontal tension increases with the depth-width ratio increasing. The result was very important reference value for manufacturing process and engineering application of fiber reinforced composite materials.
PCNN Based Welding Seam Image Segmentation Algorithm
Authors: Zou Bei Ji , Zhou Hao Yu , Chen Zai Liang , Chen Hao , Xin Guo Jiang
Published: February 2012

A new welding seam image segmentation method based on pulse-coupled neural network (PCNN) is presented in this paper. The method segments image by utilizing PCNN’s specific feature that the fire of one neuron can capture firing of its adjacent neurons due to their spatial proximity and intensity similarity. The method can automatically confirm the best iteration times by comparing the maximum of variance ratio and get the best segmentation results. Experimental results show that the proposed method has good performance in both results and execution efficiency.
Influence of QPQ Treatment on the Corrosion Behavior for Carbon Steel
Authors: Sun Fei , Cai Wei , Meng Fan Na , Hu Jing
Published: February 2012

45 steel was selected as the testing material, QPQ salt bath treatment was conducted by nitriding at the same teperature of 565°C for various time, followed by the same post-oxidation process. Characterization of modified surface layers was made by optical microscopy, X-ray diffraction and corrosion test. The results showed that the cross sectional microstructure was consisted of a thin oxide layer of Fe3O4 at the external surface formed during post-oxidation, a bright zone of εnitrides at the subsurface formed during nitriding and a diffusion zone related to the core. The corrosion resistance of 45 steel in hot water can be significantly improved by QPQ complex salt bath treatment, and the suitable duration of nitriding and post-oxidation to improve the corrosion resistance was 90min and 100min, respectively.