bluuebunny/crossref_metadata_2025 huggingface dataset:
Recent Insights and Novel Bioinformatics Tools to Understand the Role of MicroRNAs Binding to 5' Untranslated Region
Authors: Sacco Letizia , Masotti Andrea
Published: December 2012

MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression through the binding of the 3' untranslated region (3'UTR) of specific mRNAs. MiRNAs are post-transcriptional regulators and determine the repression of translation processes or the degradation of mRNA targets. Recently, another kind of miRNA-mediated regulation of translation (repression or activation) involving the binding of miRNA to the 5'UTR of target gene has been reported. The possible interactions and the mechanism of action have been reported in many works that we reviewed here. Moreover, we discussed also the available bioinformatics tools for predicting the miRNA binding sites in the 5'UTR and public databases collecting this information.
N-(4-(6-(4-nitrophenyl)-4-phenyl-1,3-diazabicyclo[3.1.0]hex-3-ene-2-yl)phenyl)acetamide
Authors: Kiyani Hamzeh , Ardyanian Mahdi
Published: December 2012

As a result of three-component one-pot reaction of trans-2-benzoyl-3-(4-nitrophenyl)aziridine with 4-acetamidobenzaldehyde and ammonium acetate, N-(4-(6-(4-nitrophenyl)-4-phenyl-1,3-diazabicyclo[3.1.0]hex-3-ene-2-yl)phenyl)acetamide was obtained in good yield. The newly synthesized compound exhibit interesting photochromic behavior in the solid and solution state. The structure of the synthesized compound was confirmed by elemental analysis, 1H-NMR, 13C-NMR and UV-Visible spectral data.
Ethylene Formation by Catalytic Dehydration of Ethanol with Industrial Considerations
Authors: Fan Denise , Dai Der-Jong , Wu Ho-Shing
Published: December 2012

Ethylene is the primary component in most plastics, making it economically valuable. It is produced primarily by steam-cracking of hydrocarbons, but can alternatively be produced by the dehydration of ethanol, which can be produced from fermentation processes using renewable substrates such as glucose, starch and others. Due to rising oil prices, researchers now look at alternative reactions to produce green ethylene, but the process is far from being as economically competitive as using fossil fuels. Many studies have investigated catalysts and new reaction engineering technologies to increase ethylene yield and to lower reaction temperature, in an effort to make the reaction applicable in industry and most cost-efficient. This paper presents various lab synthesized catalysts, reaction conditions, and reactor technologies that achieved high ethylene yield at reasonable reaction temperatures, and evaluates their practicality in industrial application in comparison with steam-cracking plants. The most promising were found to be a nanoscale catalyst HZSM-5 with 99.7% ethylene selectivity at 240 °C and 630 h lifespan, using a microreactor technology with mechanical vapor recompression, and algae-produced ethanol to make ethylene.
Assessing the Effectiveness of Functional Genetic Screens for the Identification of Bioactive Metabolites
Authors: Penesyan Anahit , Ballestriero Francesco , Daim Malak , Kjelleberg Staffan , Thomas Torsten , Egan Suhelen
Published: December 2012

A common limitation for the identification of novel activities from functional (meta) genomic screens is the low number of active clones detected relative to the number of clones screened. Here we demonstrate that constructing libraries with strains known to produce bioactives can greatly enhance the screening efficiency, by increasing the “hit-rate” and unmasking multiple activities from the same bacterial source.
Large Compressive Plasticity in a La-Based Glass-Crystal Composite
Authors: Madge Shantanu , Louzguine-Luzgin Dmitri , Inoue Akihisa , Greer Alan
Published: December 2012

La55Al25Cu10Ni10 metallic glass has been reinforced with 325-mesh Ta particles to obtain ex situ glass-crystal composites. The composites show a high compressive plasticity (40%) with a minor reduction (~8%) in yield strength—a combination unprecedented for La-based systems and even surpassing some Zr-based glassy composites that utilize a tougher matrix. However, it is also found that the plastic strain is apparently sensitive to defects, like oxides, in the glassy matrix.
Permeability of Aluminium Foams Produced by Replication Casting
Authors: Furman Eugeny , Finkelstein Arcady , Cherny Maxim
Published: December 2012

The replication casting process is used for manufacturing open-pore aluminum foams with advanced performances, such as stability and repeatability of foam structure with porosity over 60%. A simple foam structure model based on the interaction between sodium chloride solid particles poorly wetted by melted aluminum, which leads to the formation of air pockets (or “air collars”), is proposed for the permeability of porous material. The equation for the minimum pore radius of replicated aluminum foam is derived. According to the proposed model, the main assumption of the permeability model consists in a concentration of flow resistance in a circular aperture of radius rmin. The permeability of aluminum open-pore foams is measured using transformer oil as the fluid, changing the fractions of initial sodium chloride. Measured values of minimum pore size are close to theoretically predicted ones regardless of the particle shape. The expression for the permeability of replicated aluminum foam derived on the basis of the “bottleneck” model of porous media agrees well with the experimental data. The obtained data can be applied for commercial filter cells and pneumatic silencers.
Effect of Rain-Shelter Cultivation of Vitis vinifera cv. Cabernet Gernischet on the Phenolic Profile of Berry Skins and the Incidence of Grape Diseases
Authors: Meng Jiang-Fei , Ning Peng-Fei , Xu Teng-Fei , Zhang Zhen-Wen
Published: December 2012

Rain-shelter cultivation is an effective cultural method to prevent rainfall damage during grape harvest and widely applied in the Chinese rainy regions. In this study we investigated the effect of rain-shelter cultivation on grape diseases and phenolic composition in the skins of Vitis vinifera cv. Cabernet Gernischet grape berries through the comparison with open-field cultivation at two vintages (2010 and 2011). The results showed that rain-shelter cultivation reduced the incidence of grape diseases significantly and delayed the maturation of Cabernet Gernischet fruits. With regards to most of the phenolic compounds identified in this study, their content in grape samples under rain-shelter cultivation was decreased compared to those under open-field cultivation. However, rain-shelter cultivation stimulated the accumulation of dihydroquercetin-3-O-rhamnoside in grape skins during grape maturation. These were related with micrometeorological alterations in vineyards by using plastic covering under rain-shelter cultivation. It suggests the rain-shelter cultivation makes possible the cultivation of “Cabernet Gernischet” grapes in an organic production system, for providing a decrease in the incidence of diseases and the dependence on chemical pesticides in the grape and wine industry.
Efficient Indium-Mediated Dehalogenation of Aromatics in Ionic Liquid Media
Authors: Cañete Álvaro , Salas Cristian , Zacconi Flavia
Published: December 2012

An efficient indium-mediated dehalogenation reaction of haloaromatics and haloheteroaromatics in ionic liquids has been studied. This method is simple and effective in the presence of [bmim]Br. Furthermore, this methodology is environmentally friendly compared with conventional ones.
What is a Fresh Scent in Perfumery? Perceptual Freshness is Correlated with Substantivity
Authors: Zarzo Manuel
Published: December 2012

Perfumes are manufactured by mixing odorous materials with different volatilities. The parameter that measures the lasting property of a material when applied on the skin is called substantivity or tenacity. It is well known by perfumers that citrus and green notes are perceived as fresh and they tend to evaporate quickly, while odors most dissimilar to ‘fresh’ (e.g., oriental, powdery, erogenic and animalic scents) are tenacious. However, studies aimed at quantifying the relationship between fresh odor quality and substantivity have not received much attention. In this work, perceptual olfactory ratings on a fresh scale, estimated in a previous study, were compared with substantivity parameters and antierogenic ratings from the literature. It was found that the correlation between fresh odor character and odorant substantivity is quite strong (r = −0.85). ‘Fresh’ is sometimes interpreted in perfumery as ‘cool’ and the opposite of ‘warm’. This association suggests that odor freshness might be somehow related to temperature. Assuming that odor perception space was shaped throughout evolution in temperate climates, results reported here are consistent with the hypothesis that ‘fresh’ evokes scents typically encountered in the cool season, while ‘warm’ would be evoked by odors found in nature during summer. This hypothesis is rather simplistic but it may provide a new insight to better understand the perceptual space of scents.
Disposable Fluorescence Optical pH Sensor for Near Neutral Solutions
Authors: Ferrari Luca , Rovati Luigi , Fabbri Paola , Pilati Francesco
Published: December 2012

The design, development and performance evaluation of a fluorescence-based pH sensor for on-line measurements is presented. The pKa of the sensing element has been calculated to be 7.9, thus the sensor is suitable for measurement of near neutral solutions. The sensor consists of a low-cost disposable polymer sensing probe, in contact with the solution under test, interrogated by an optoelectronic transduction system. The pH sensitive dye is based on fluorescein O-methacrylate, which has been covalently linked to a hydrogel matrix, realized through the use of HEMA (2-hydroxyethyl methacrylate), HDDA (1,6-hexanediol diacrylate) and PEGDA (polyethylene glycol diacrylate). The optical interrogation setup, together with the electronics, has been developed to acquire and process the fluorescence signal. The sensor works over a pH range between 6.5 and 9.0. In the range between 7.0 and 8.0, the sensor shows a linear behavior with a maximum linearity error of 5%. Thanks to the good performance of the sensing element and transduction system, the short term drift of the reading (measured over 40 min) is lower than 0.15%. The measuring system also exhibits good performance in terms of response time and reproducibility.
Taylor–Socolar Hexagonal Tilings as Model Sets
Authors: Lee Jeong-Yup , Moody Robert
Published: December 2012

The Taylor–Socolar tilings are regular hexagonal tilings of the plane but are distinguished in being comprised of hexagons of two colors in an aperiodic way. We place the Taylor–Socolar tilings into an algebraic setting, which allows one to see them directly as model sets and to understand the corresponding tiling hull along with its generic and singular parts. Although the tilings were originally obtained by matching rules and by substitution, our approach sets the tilings into the framework of a cut and project scheme and studies how the tilings relate to the corresponding internal space. The centers of the entire set of tiles of one tiling form a lattice Q in the plane. If XQ denotes the set of all Taylor–Socolar tilings with centers on Q, then XQ forms a natural hull under the standard local topology of hulls and is a dynamical system for the action of Q.The Q-adic completion Q of Q is a natural factor of XQ and the natural mapping XQ → Q is bijective except at a dense set of points of measure 0 in /Q. We show that XQ consists of three LI classes under translation. Two of these LI classes are very small, namely countable Q-orbits in XQ. The other is a minimal dynamical system, which maps surjectively to /Q and which is variously 2 : 1, 6 : 1, and 12 : 1 at the singular points. We further develop the formula of what determines the parity of the tiles of a tiling in terms of the coordinates of its tile centers. Finally we show that the hull of the parity tilings can be identified with the hull XQ; more precisely the two hulls are mutually locally derivable.
Human milk: a source of more life than we imagine
Authors: Jeurink P.V. , van Bergenhenegouwen J. , Jiménez E. , Knippels L.M.J. , Fernández L. , Garssen J. , Knol J. , Rodríguez J.M. , Martín R.
Published: December 2012

The presence of bacteria in human milk has been acknowledged since the seventies. For a long time, microbiological analysis of human milk was only performed in case of infections and therefore the presence of non-pathogenic bacteria was yet unknown. During the last decades, the use of more sophisticated culture-dependent and -independent techniques, and the steady development of the -omic approaches are opening up the new concept of the ‘milk microbiome’, a complex ecosystem with a greater diversity than previously anticipated. In this review, possible mechanisms by which bacteria can reach the mammary gland (contamination versus active migration) are discussed. In addition, the potential roles of human milk for both infant and maternal health are summarised. A better understanding of the link between the milk microbiome and health benefit, the potential factors influencing this relationship and whether or not it can be influenced by nutrition is required to open new avenues in the field of pregnancy and lactation.
Analysis of the human intestinal microbiota from 92 volunteers after ingestion of identical meals
Authors: Jin J.S. , Touyama M. , Kibe R. , Tanaka Y. , Benno Y. , Kobayashi T. , Shimakawa M. , Maruo T. , Toda T. , Matsuda I. , Tagami H. , Matsumoto M. , Seo G. , Chonan O. , Benno Y.
Published: December 2012

The intestinal microbiota composition of 92 volunteers living in Japan was identified following the consumption of ‘identical meals’ (1,879 kcal/day) for 3 days. When faecal samples were analysed by terminal restriction fragment length polymorphism with several primer-restriction enzyme systems and then clustered, the patterns could be divided into 2 clusters. Contribution tests and partition modelling showed that OTU211 of the 35f-MspI system and OTU237 of the 35f-AluI system were key factors in the distribution of these groups. However, significant differences among these groups in terms of body mass index and age were not observed.
Postbiotics: what else?
Authors: Tsilingiri K. , Rescigno M.
Published: December 2012

The use of probiotics and synbiotics in the food industry or as food supplements for a balanced diet and improved gut homeostasis has been blooming for the past decade. As feedback from healthy consumers is rather enthusiastic, a lot of effort is currently directed in elucidating the mechanisms of interaction between beneficial microbes and barrier and immune function of the host. The use of probiotics or synbiotics for treating certain pathologies has also been examined, however, the outcome has not always been favourable. In most cases, the effect of the administered probiotic is evident when the bacteria are still alive at the time they reach the small and large intestine, suggesting that it is dependent on the metabolic activity of the bacteria. Indeed, in some occasions it has been shown that the culture supernatant of these bacteria mediates the immunomodulatory effect conferred to the host. Recent work on relevant probiotic strains has also led to the isolation and characterisation of certain probiotic-produced, soluble factors, here called postbiotics, which were sufficient to elicit the desired response. Here, we summarise these recent findings and propose the use of purified and well characterised postbiotic components as a safer alternative for clinical applications, especially in chronic inflammatory conditions like inflammatory bowel disease, where probiotics have not yet given encouraging results as far as induction of remission is concerned.
Internationalization among emerging countries: insights from Brazilian-Russian beef network
Authors: Thomé Karim Marini , Vieira Luciana Marques
Published: December 2012

This paper examines the expansion (or internationalization) of Brazilian firms into the Russian market, by applying the revised model of Uppsala in the context of emerging economies. The study is an exploratory descriptive study based on case studies of four Brazilian meatpackers with operations in Russia. The results show that the revised model of Uppsala partially explains the internationalization of the firms studied. Some evidence regarding the influence of the business network was empirically found. However, some concepts proposed by the revised model, such as the manner in which a network limits company expansion, were not found. This study contributes empirical evidence to support the theoretical framework and opens avenues for further research on business networks among emerging countries.
Managing Russian agri-food supply chain networks with power
Authors: Belaya Vera , Hanf Jon Henrich
Published: December 2012

The importance of power is underlined by many scientists who view it as a key behavioural construct. Power distinguishes itself as an effective tool in coordinating and promoting harmonious relationships, solving conflicts, and enhancing performance. An important challenge is to find out what role power plays in managing supply chain networks, paying specific attention to its effects on coordination and cooperation. The aim of our work is to investigate the role of power in supply chain networks in order to work out a strategy that enables supply chain managers to select an effective mix of power mechanisms. We critically examine the existing literature and elaborate on the role of power in supply chain relationships. We work out and test a theoretical model of the effects of power on cooperation and coordination and discuss possible managerial implications of using power as an effective tool for promoting supply chain management. To verify our research hypotheses we conducted semi-structured in-depth expert interviews via telephone about relationships of international food processing companies with their suppliers in Russia and tested the model using the Partial Least Squares (PLS) approach. Depending on the origin of power, it may have different effects on cooperation and coordination. Based on the results of the survey we worked out a special ranking system for the use of power depending on its expected effect on coordination and cooperation. Expert power has the highest ranking among the other types of power for improving coordination. Therefore, we recommend using this strategy as a first priority for improving coordination. The data in our PLS analysis represent only a single perspective in the dyad: food processing companies. Gathering data from other companies’ perspectives, such as retailers or agricultural producers, could have produced different (presumably more realistic or complete) findings. Our study offers recommendations for managers about the use of different types of power in managing the Russian agri-food supply chains, with specific attention paid to coordination and cooperation issues. In order to manage supply chain networks successfully, knowledge of different types of power is essential. The developed ranking of different types of power according to their effects on coordination and cooperation is designed to help managers make the right decisions in choosing the appropriate type of power for coordination purposes.
Developments in mycotoxin analysis: an update for 2011-2012
Authors: Shephard G.S. , Berthiller F. , Burdaspal P.A. , Crews C. , Jonker M.A. , Krska R. , Lattanzio V.M.T. , MacDonald S. , Malone R.J. , Maragos C. , Sabino M. , Solfrizzo M. , van Egmond H.P. , Whitaker T.B.
Published: December 2012

This review highlights developments in mycotoxin analysis and sampling over a period between mid-2011 and mid- 2012. It covers the major mycotoxins aflatoxins, Alternaria toxins, ergot alkaloids, fumonisins, ochratoxin, patulin, trichothecenes, and zearalenone. A section on mycotoxins in botanicals and spices is also included. Methods for mycotoxin determination continue to be developed using a wide range of analytical systems ranging from rapid immunochemical-based methods to the latest advances in mass spectrometry. This review follows the format of previous reviews in this series (i.e. sections on individual mycotoxins), but due to the rapid spread and developments in the field of multimycotoxin methods by liquid chromatography-tandem mass spectrometry, a separate section has been devoted to advances in this area of research.
El influjo del Derecho Indiano en la legislación sobre ejidos de la Provincia de Buenos Aires, 1782-1870
Authors: Barcos María Fernanda
Published: December 2012

Los pueblos de la actual provincia de Buenos Aires se fueron conformando mayormente de manera espontánea, a medida que se asentaba la población y se avanzaba sobre el espacio apropiado a los indígenas; en la mayoría de los casos al amparo de los fuertes o las capillas. Los ejidos de esos pueblos existían de hecho como tierras de pan llevar pero se trazaron formalmente recién durante el siglo XIX. A lo largo de este trabajo se analizará el modo en que se operó la construcción de un cuerpo jurídico para los ejidos bonaerenses poniendo especial interés en la influencia del derecho indiano.
Study on Power-Aware Routing Mechanism in MANET
Authors: Li Rong Xin , Zheng Chao Mei , Chai Ling
Published: December 2012

A mobile ad hoc networks (MANET) is a group of mobile wireless nodes which communicate without any fixed networking infrastructure. The nodes in an ad hoc mobile network are typically powered by batteries with a limited energy supply. For MANETs, One of the most important and challenging issues is how to conserve energy, maximizing the network lifetime.Since routing is an essential function in these networks, developing power-aware routing protocols has been an intensive research area in recent years. As a result, many power-aware routing protocols have been proposed from a variety of perspectives. In this article,we propose and analyse the model of power consumption in ad hoc network, present different power-aware metrics base on power consumption and survey some power-aware routing protocols proposed for mobile ad hoc networks.
The Algorithm of (7, 4) Binary Hamming Coding and Verification Testing in Wireless Communications
Authors: Wen Guo Zhi
Published: December 2012

The analysis of the (7, 4) binary hamming coding and decoding algorithm in wireless communications with C language programming was given and the verification testing was implemented on a HD 111 communication principle platform. The theory result was in consistent with that of the experiment. It shows that (7, 4) binary hamming coding could rectify one error symbol which would emerge in the signal transmission process and the decoding is easily to be brought about.
Modeling of TCP Protocol in Event-B
Authors: Wang Xue Jing , Zhang Hong
Published: December 2012

Event-B is a formal language for system modeling, which allows early-stage comparison of design alternatives and identifies potential sources of defects. Stop-and-Wait ARQ is the basis of data link layer protocols in TCP. Our work aims to model the protocol in Event-B to reduce development risks. The paper is presented in two parts: modeling of the error-free transmission in the protocol without time constraints, and then adding of time constraints to model the overtime retransmission.
On Performance of Combining Methods for Three-Node Relay Network
Authors: Rao Wen Yuan
Published: December 2012

We study the performance of the three-node relay network. Three combining methods for the Amplify-and-Forward (AF) protocol and the Decode-and-Forward (DF) protocol are compared. Simulations indicate that the AF protocol is better than DF under all these three combining methods. To combine the incoming signals the channel quality should be estimated as accuracy as possible, more estimation accuracy requires more resource. A very simple combining method can obtain the performance comparative with optimal combining methods approximately. At the same time, all three combining methods for both diversity protocols can achieve the maximum diversity order.
Evolution of Intensity Distribution of Partially Coherent Sinusoidal-Gaussian Beams through Slant Atmospheric Turbulence
Authors: Li Jin Hong , Duan Mei Ling , Wei Ji Lin
Published: December 2012

Based on the extended Huygens-Fresnel principle, the analytical expressions for the intensity of partially coherent sinusoidal-Gaussian beams with Schell-model correlator in atmospheric turbulence along a slant path are derived, and used to study the evolution of intensity distribution of partially coherent sinusoidal-Gaussian beams, including partially coherent sin-Gaussian (SiG), cos-Gaussian (CoG), sinh-Gaussian (ShG), cosh-Gaussian (ChG) beams. It is shown that the different intensity distribution at the source plane of the four beams evolve to the same Gaussian distribution in atmospheric turbulence along a slant path. The spreading of the partially coherent sinusoidal-Gaussian beams along a horizontal path is larger than that along a slant path in the long atmospheric propagation, and the slant path is more beneficial to the beam propagation through atmospheric turbulence in comparison with the horizontal propagation. The validity of our results is interpreted physically. Results in this paper may provide potential applications in free-space optical communications.
Causal Relationship Analysis between the Development of the Communications Industry and National Economy
Authors: Wang Zeng Min , Li Jing Jing
Published: December 2012

We selected the constant price GDP and telecom business volume as the national economy and communications industry development metrics. First, we analyzed China's communication industry development in China since 1978 according to the industry life cycle theory. Then we used the time series model by detrending to make the two sequences stationary and took Granger causality test. The results show that China's telecommunications industry is in the late growth stage. There is a unidirectional causality from GDP to the direction of the telecom business volume.
Design of an Instructional and Experimental System of Electronic Sphygmomanometer
Authors: Huo Xu Yang , Jiao Chun , Li Li Ying , Yang Feng Jian , Mu Zi Yi , Qi Qiu Ju , Zhang Guang Lei
Published: December 2012

According to the problem that it is not convenient to carry out experiments in the course of "Medical Electronic Instrument Principle", an instructional and experimental system of non-invasive electronic sphygmomanometer is designed. This system is composed of a hardware platform and a software platform. The hardware platform includes all the components to implement an electronic sphygmomanometer, such as the electric pump, valve, pressure transducer, LCD, MCU and other associated circuits. The hardware platform also has a USB interface. It can transfer data to the software platform in a predefined format. The software platform can receive data and display curves from these data to facilitate the understanding of the data processing procedure. Based on this system, teachers can demonstrate the measurement principle of the electronic sphygmomanometer, while students can practice its implementation. The system provided a good platform for the instruction and experiment of the non-invasive electronic sphygmomanometer.
Design of Full-Color LED Display-Screen System Based on ARM and FPGA
Authors: Yang Bao Liang , Yang Shou Liang
Published: December 2012

Full-Color LED display-Screen is widely used as a new information display device in all aspects of life, the large Full-Color LED Display-Screen color is composed of enhanced MCU or ARM, but the real-time and flexibility of the control system do not satisfy the require of people ,With the continuous improvement of people's living standard. FPGA is favored by the embedded development generally，so a new Full-Color LED Display-Screen was designed based on FPGA and ARM, the system choose the Cortex-M3 ARM as kernel board controller, using the FPGA to scan and control display data, using WI-FI wireless network to communicate though the computer software. The test shows that the system is reasonable, realizable, operated easily, flexible, adaptable environment, low price. This system can support picture to display on 256 gray-scale full-color, and can be communicate with WI-FI on high speed and it will be used widely in the practical system.
Delay-Dependent Stability Criteria for Systems with Distributed and Interval Time-Varying Delays
Authors: Wang Cheng , Zhang Qing , Gan Jian Ping
Published: December 2012

This paper deals with the robust stability problem of distributed systems with interval time-varying delays. The key features of the approach include the introduction of suitable Lyapunov-Krasovskii functional and use of tighter bounding technology. A delay-dependent stability criterion is derived by using linear matrix inequality (LMI) techniques without using either free weighting matrices or model transformation. The criterion can be efficiently solved with available computational software.
Study on Method of Autonomous Mobile Robot Integrated Navigation Based on SLAM
Authors: Zeng Jing , Guo Xiao Song , Zhang Guo Liang
Published: December 2012

Aiming at the problem of navigation in unknown environment of autonomous mobile robot, the self-made mobile robot was taken as research object. The integrated navigation technology was adapted to integrate the SLAM navigation system, DR navigation system and MEMS micro inertial navigation system possessed by the studied robot to construct the SLAM/DR/MEMS integrated navigation system of mobile robot. The experiments were carried to test the method, and the results show that the precision of navigation and location of mobile robot was developed by the integrated navigation scheme.
Research on Dynamic Micro-Extended-Analog-Computer Array Controller
Authors: Li Zhen Xu , Pan Feng , Guo Chu Sheng , Zhu Yi Lin , Li Wei Xing
Published: December 2012

Analog field computation is a newly emergent unconventional computing area. The micro-Extended-Analog-Computater (uEAC), a typical analog field computation model, achievs the mapping by a configurable analog electrical field and multi-value logic units. In the paper, the static model of a single uEAC unit is established and the limition on nonlinear mapping is discussed. According to the analysis results, an uEAC array with a full-connceted topology is proposed, furthermore, Particle Swarm Optimizater (PSO) is adopted to configurate the topology and resistance matrix. As a results, various uEAC array with more special topology and more computing power. The novel uEAC array is designed as a controller of a gimbal system. Simluation results demostrates the special structure and effectiveness of the uEAC array controller.
A Projection-Based Locality-Sensitive Hashing Technique for Reducing False Negatives
Authors: Lee Keon Myung
Published: December 2012

It is challenging to efficiently find similar pairs of objects when the number of objects is huge. The locality-sensitive hashing techniques have been developed to address this issue. They employ the hash functions to map objects into buckets, where similar objects have high chances to fall into the same buckets. This paper is concerned with a locality-sensitive hashing technique, the projection-based method, which is applicable to the Euclidean distance-based similar pair identification problem. It proposes an extended method which allows an object to be hashed to more than one bucket by introducing additional hashing functions. From the experimental studies, it has been shown that the proposed method could provide better performance compared to the projection-based method.
Design of Clock Synchronization Algorithm in Networked Control Systems
Authors: Liu Yi , Yang Hai Ying
Published: December 2012

The key point of the existing Ethernet test and measurement is that the method needs to achieve precision clock synchronization between different terminals. In this paper, an improved method was proposed with consideration of the time drift and propagation delay, expressing master-slave synchronization as a linear relationship and inducting the line of least squares fitting algorithm that traded as linear matrix form. The precision time protocol (PTP) was also analyzed in this paper. The experiment results show that the synchronization accuracy reaches sub-microsecond grade, which is the same as the PTP.
Research of Applying Usability Engineering to Design of Distance Education System
Authors: Tang Chao Lan , Yang Xian , Guo Zhong Ning
Published: December 2012

It is discussed how to apply usability engineering theory and method to the design of distance education system, it aims to design a distance education system with good usability in order to resolve such issues as operating difficulties and poor user experience resulted by traditional function design method. The design of Engineering Drawing distance education system is illustrated as an example, the method of applying usability engineering theory and methods to the design of distance education system has universal guiding significance and broad application prospects.
Research on Dynamic Authorization Access Control Strategy Model of Distributed Multi-Organization MIS
Authors: Meng Xiao Ming , Zhang Jian Hua
Published: December 2012

Focus on the problem of dynamic authorization access control of Distributed Multi-Organization Management Information System (DMOMIS), the system resources are divided into two kinds: relatively independent resources and shared resources. These two kinds of resources were used different authorization system to authorize. The relatively independent resources were authorized by using distributed authorization system (DA), and the similar and shared resources were authorized by using authorized system (A). According to the key terms definition, the system hypothesis and the idea of dynamic programming, then the dynamic authorization access control process of DMOMIS was abstracted as a multi stage users authorization process based on resources, and put out the dynamic authorization access control strategy model of DMOMIS, at last, depicted its execution process.
Research on Optimization Method of Extreme Learning Machine
Authors: Zheng Zong Liang
Published: December 2012

Based on the research of extreme learning machine and support vector machine, this paper does the research on the optimization method on extreme learning machine. This paper suggests an optimization model of extreme learning machine based on the improvement of the old model, and this model has obvious improvement on generalization ability and learning parameter ability.
Research on the Universities Library Information Wed Portal Based on the Concept of Web2.0
Authors: Xi Cai Li
Published: December 2012

This Web2.0 personalized and interactive services are profoundly affecting our work and learning, its influence to the university library information portal website is not only the impact on the technique level, more of them are the impact on library service idea and the service ways. University library information portal website has become a web portal to supply high quality information resource quickly and service web portal for professional researchers in specific areas from the original navigation to the subject information through evaluation, description and organization high quality information resource, which has brought the opportunity and the challenge for the construction of college libraries' information portal website. This paper analyzes the plight of existence in the traditional university library information portal website, analyzes the related technology characteristic of the Web2.0 and its advantages in the construction of the university library website, points out the principles and strategies in the library information portal website construction.
Compact LowPass Filter with Wide StopBand Using Non-Uniform Microstrip Resonant Cells
Authors: Liang Yan , Wu Xiao Ming , Tang Bi Hua , Wu Yong Le
Published: December 2012

In this paper, a novel compact microstrip lowpass filter is designed. The proposed filter which is etched on the 50 Ω microstrip line consists of four non-uniform 1-D microstrip photonic bandgap (PBG) cells with different cutoff frequency.. The demonstration lowpass filter with 2.2 GHz cutoff frequency is designed, fabricated and measured. The measurement results show that the band rejection effect is better than -20 dB from 2.8 GHz to 10 GHz, the insertion is less than 2 dB, and the length of filter is 5.6 cm long. Compared with the conventional filter, the proposed filter has smaller size. Meanwhile, it overcomes the problems of narrow stop-band and low harmonic suppression. Furthermore, the impedance matching is not need to be considered. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.
The Framework Study of City SEE Information Inquiry System
Authors: Zhang Fang
Published: December 2012

Based on the concept of digital citiy, futher explained the concept of society economy environment (SEE); Combining GIS and network technology, this paper proposes the framework of the city SEE information inquiry system. And based on the spatial analysis functions in the spatial query and the amount of operator functions of GIS, describes the functions of the system.
Algorithms for Generating XML Documents from Probabilistic XML
Authors: Zhu Yan , Ma Hai Tao
Published: December 2012

Uncertain relational data management has been investigated for a few years, but few works on uncertain XML. The natural structures with high flexibility make XML more appropriate for representing uncertain information. Based on the semantic of possible world and probabilistic models with independent distribution and mutual exclusive distribution nodes, the problem of how to generate instance from a probabilistic XML and calculate its probability was studied, which is one of the key problems of uncertain XML management. Moreover, an algorithm for a generating XML document from a probabilistic XML and calculating its probability are also proposed, which has linear time complexity. Finally, experiment results are made to show up the correct and efficiency of the algorithm.
An Approach to Detect Similar Script Functions in Web Applications Based on Calling Information
Authors: Kim Jung Il , Lee Eun Joo
Published: December 2012

Cloned code might exacerbate a system maintenance problem, so it is important to remove duplicate code to improve system performance. In web development, script code can often be duplicated as a unit of a script function. Previous research for detecting similar script functions forecasted candidates of similar script functions based on the name of the function and classified the detected candidates into four similarity levels by comparing factors contained within the script functions. There are two key issues that need to be considered to detect similar script functions when using that method. One was that a pair of similar script functions needs to have the same name to be detected. The other was that some modifications particularly such as adding or removing calling statements were not identified after detecting. Adding or removing calling statements might prevent identification for duplicate script function. In this paper, we propose a novel approach to detect similar script functions that can determine the similarity of a script function by evaluating the structural similarity of function code and the calling structure. The evaluation for detecting the structural similarity of code and the calling structure is performed based on a similarity metric, FSIM, which we have defined. We showed the usefulness of FSIM by applying it to three open source projects.
An Audit-Integrated ARBAC Model
Authors: Liu Qiang , Zhang Jian Hua
Published: December 2012

Role-Based Access Control (RBAC) model is the main-stream access control model. When addressing large-scale and distributed application, the highest Security Administrator(SA) of RBAC model always try to transfer his management authority to his inferior SAs to decrease his workload. However, How to ensure that these inferior SAs perform their management authorities legally is a big problem. Although there are a technology framework of administrative RBAC model, named ARBAC97, the supervise mechanism and audit mechanism on the utilization of transferred authorities is incomplete in RBAC model. In this research, an audit-integrated ARBAC (au-ARBAC) model is presented. In the au-ARBAC model, a right and liability mechanism has been set up, an audit role is defined and auditing permission is assigned to this role. At the same time, we put forwards two types basic audit business: routine audit and accident audit. As to accident audit, a decision process for division of responsibility is designed to clarify the responsibility of wrongdoer SAs. The Au-ARBAC model can help to improve the Consciousness of authorization responsibility and to perform their management authorities responsibly and legally.
Construction and Application of WD-GA-SVR Model - CSI 300 Index Forecast
Authors: Zhang Li Jing , Qian Zheng Ming , Zhang Heng
Published: December 2012

In order to improve the predictive accuracy of SVM on financial time series, we propose a WD-GA-SVR model in this paper. First, do wavelet denoising (WD) to financial time series to eliminate the interference noise in the original sequence; and use the genetical gorithm (GA) for parameter optimization to make up selecte defects of the parameters c and g; use the obtained optimal parameter values to train to formate the optimal SVM learning machine. The forecast of the order time delay data of CSI 300 index and the comparative analysis of the SVR model, GA-SVR and the WD-GA-SVR model predictions indicate that the WD-GA-SVR model significantly improve the robustness of the prediction model and forecast accuracy, can provide a reference for policy makers and investors.
Design and Implementation of ARM-Based Mobile Handheld Terminal for Community Medical
Authors: Zheng Hong Wei , Zeng Bi
Published: December 2012

The system development was based on embedded Linux operating system, the SamSung S3C6410 processor analyzed data. The terminal recognized the basic information of patients through the RFID radio frequency technology, and obtained patient body temperature, electrocardiogram, pulse data via peripheral measurement module, The data would be sent to the servers placed in the background observation center of the hospital in real time through the 3G network, thereby hospital could establish patient's health file material. This paper mainly discusses the terminal hardware architectures and the design and implementation of human-machine interactive interface. The software design of terminal use Qt Designer, we build and transplant the embedded database—SQLite in the terminal. The mobile handheld terminal is practical, good real-time performance, easy to operate, can be used in community medical cause, can help for the community doctor follow-up, health filing, etc. and it has practical application value of popularization.
Determination of Parting Lines and Multiple-Undercut Boundaries for Complex CAD Parts with Application to Multi-Piece Molds Design
Authors: Quang Nguyen Huu , Lin Alan C.
Published: December 2012

This paper proposes a new slicing approach that uses multiple sets of cutting planes to automatic determine parting lines and boundaries of undercuts of complex CAD parts for the multi-piece molds design. In this algorithm, the group of feasible parting directions is first collected and three sets of cutting planes are then formed based on the primary parting direction. One set of cutting planes is used to generate slicing profiles, and two others are used to extract intersection points passed through by parting loops and boundaries of undercuts. The result shows that the proposed parting lines are suitable to obtain parting surfaces and construct the entire mold-pieces. The algorithm provides a highly effective solution for handling many complex industrial parts.
Exploration and Practice in MCU Course Teaching Based on CDIO Mode
Authors: Xie Nan
Published: December 2012

As the MCU course is combination with theory and practice, and pays attention to cultivate students' practical ability. This paper has introduced the present situation and characteristic of the course. Going with the novel CDIO teaching mode, the practical solution of CDIO mode in the MCU course teaching was designed and applied. By practicing the teaching mean, students can complete the course study in the process of learning during doing and doing during learning. In additional, students can reach the course training purpose and can improve higher innovation and independent thinking abilities.
Extending Object-Z Formal Specification with Real-Time
Authors: Wen Zhi Cheng , Chen Zhi Gang
Published: December 2012

This paper extends Object-Z with Real-Time and describes the characters of real-time system: delay, timeout and multithread. Real-Time Object-Z consists two parts: functional specification and filter specification. The both for any time critical system can be developed with two parts. Functional specification developed with Object-Z formerly can be reused. The main benefit is that it is convenient to deal with the timing variables defined in the specification developed with our approach. Using our approach, we can develop real-time specification and reason about the real-time properties conveniently.
Intelligent Match of Emergency Plan Based on Chinese Keywords Extraction
Authors: Wu Huai Guang , Lin Qing , Fu Zhong Ju
Published: December 2012

This paper introduced an intelligent match method of emergency plan based on keywords extraction. Words frequency, part of speech and position of framework are taken as the keyword weight factors. Least-squares error linear estimate method is used to regulate the factors and calculate keywords weight. And Vector Space Model is set up to calculate the maximum similarity between plan texts to complete design of plan match. The expansible practical parameters adjustment module is provided to adapt to diversity of match plan with emphasis part. Compare with tf*idf, the experimental results show that the presented method is more promising in intelligent match method of emergency plan.
Mobile Cache of CGML Spatial Data
Authors: Zhang Ai Guo , Wu Qun Yong
Published: December 2012

As the development of wireless network and 3rd generation communication, LBS will have broad application prospects. At the same time, CGML spatial data is evolving as the transmission and exchange standard of mobile spatial data because of its compression and rich information. Therefore, a mobile cache strategy of CGML spatial data is proposed. In the strategy, firstly, the basic and expand query boxes are generated in the center of terminal’s location. And then, the cartographic data received in the basic box is formed into CGML file. Finally, the received data in the expand box is added to the built CGML file, which is used to follow-up operation of cartography.
Priors for Time Series Forecasting
Authors: Zhou Jing Jing
Published: December 2012

Regularization is a method for improving the solution of ill-posed problems with neural networks. In regularization, a penalty term, called regularizer or prior, is added to the performance function. The penalty term is weighted with a regularization parameter, , to balance the trade-off between model bias and model variance. We have compared the performances of different priors on several different time series data sets, to see if there is any consistent difference in performance between priors. The conclusions from our study on real world time series data has weight decay the best performance and the Bishop smoother is the worst choice.