bluuebunny/crossref_metadata_2025 huggingface dataset:
Technology and the Language Teacher
Authors: Ivy Taslima Irine
Published: December 2012

Today is the world of Facebook, Twitter, MySpace, Google, Yahoo, I-pods, I- pads. Gadgets reign supreme even in a developing country like Bangladesh (e.g. cell phones) and so technology is fused in every part of our lives, in fact, technology is no longer a tool to create an alternative environment- it is THE environment (Gupta, 2010: 68). Academic institutions are, therefore, expected to prepare students for a technological era that awaits them. As an inevitable consequence, there is an expectation from administrators and students alike that a teacher will use technology to sophisticate teaching. As language teaching professionals our life is also intertwined with technology: for administrative purposes, materials development and storage, grading, professional communication, photocopies, scanning and so on. Technology, whether for the classroom or for official purpose, has to be implemented for its pedagogical value and relevance-not just to jump into the bandwagon. This article is a brief overview of technologies and tools considered necessary for the language teacher of today especially in the context of Bangladesh. It also tries to summarize dominant emerging trends in the field of technology enhanced language learning. DOI: http://dx.doi.org/10.3329/afj.v4i0.12942 The Arts Faculty Journal Vol.4 July 2010-June 2011 pp.206-223
Education, Information Literacy and Lifelong Learning: Three Pillars of Nation Building in the Emerging Knowledge Society
Authors: Singh Jagtar , Begum Dilara
Published: December 2012

This paper is based on the assumption that libraries have a pivotal role to play in nation building, and future of libraries is in our own hands. It further emphasizes the need for change in libraries in the context of emerging knowledge economy. It makes reference to the United Nations' Millennium Development Goals, UNESCO's Education for All Programme (EPAP), and Information for All Programme (IFAP), as well as the mandate of the National Knowledge Commission (NKC). It also highlights the impact of ICT on the life and work of people, and paradigm shift in libraries. It emphasizes that library consortia, institutional repositories, and open access archives are strategic response to the paradoxical situation of growing digital documents and declining library budgets. It further explains that more important than the name of a library (traditional or digital) is the mandate and the context of the library. It also enlists the challenges and opportunities facing libraries, and concludes that the future of libraries is though uncertain, yet in our own hands. Bangladesh Journal of Library and Information Science Vol.2(1) July 2012 pp.48-56DOI: http://dx.doi.org/10.3329/bjlis.v2i1.12921
Digitization and Developing Digital Library and Information Support in Bangladesh: Professional Challenges
Authors: Alam Md Saiful
Published: December 2012

The digital revolution throughout the world has brought about new challenges as well as new opportunities for the information professionals. The information professionals of the developing countries are grappling with problems like weak infrastructure, lack of skilled manpower, financial stringency etc. in implementing information and communication technologies in the libraries and also in the digitization of information resources. This paper explores the problems and potential of ICT and digitization in context of the library and information sector of Bangladesh. An elaborate analysis of various challenges for establishing digital information systems and services in the backdrop of the socio-economic realities of Bangladesh has been presented in the paper, along with indications as to how these challenges could be overcome. The paper ends with the conviction that, if these challenges could be dealt with successfully, the Vision 2021 stated by the Government could be realized in time. Bangladesh Journal of Library and Information Science Vol.2(1) July 2012 pp.57-66DOI: http://dx.doi.org/10.3329/bjlis.v2i1.12922
E-Journals Usage Trend in IUB Library
Authors: Chowdhury Muhammad Hossam Haider
Published: December 2012

This article aims to give a general understanding about the popularity of electronic resources in Independent University, Bangladesh, which would help in shaping higher education in the country. Resources usages were determined on the basis of electronic resources providers data. The article comes up with some important findings. Use of Emerald database in IUB found to be more rational compared to other three IP based databases. The ratios between the top-most and the 25th documents those opened, from Emerald 5:1, from JSTOR 13:1, from ABI/Inform 19:1, from OUP Journals 31:1. Users preferred PDF documents and Period had no influence over usage. The study only covered IP based electronic resources; password based or other free electronic resources were out of the study. This is the first case study on the use of electronic resources in Bangladesh, which would give Bangladeshi libraries a guidance regarding electronic resources subscription. Bangladesh Journal of Library and Information Science Vol.2(1) July 2012 pp.79-91DOI: http://dx.doi.org/10.3329/bjlis.v2i1.12924
Knowledge Management in Universities: Role of Knowledge Workers
Authors: Hoq Kazi Mostak Gausul , Akter Rowshan
Published: December 2012

Knowledge management has been hailed as one of the most important developments in the fields of information studies and management science in the recent decades. By capturing, organizing, documenting and sharing organisational knowledge, Knowledge management helps todays complex organisations to make better decisions and solve their problems effectively. As highest centers of learning, universities need to build information infrastructure and create a favourable atmosphere where teaching and non-teaching staff, students, researchers, patrons and other stakeholders can take part in various knowledge management activities. The role of knowledge workers in this regard is quite important. By advocating knowledge discovery and use, knowledge workers can bring about changes in the universitys organisational cultures and individual behaviors relative to knowledge. Universities can play a significant role in the building and unhindered development of a knowledge-based society by recruiting skilled and competent knowledge workers and empowering them to manage the knowledge assets effectively. Bangladesh Journal of Library and Information Science Vol.2(1) July 2012 pp.92-102DOI: http://dx.doi.org/10.3329/bjlis.v2i1.12925
The Determination of Value in Archival Science and the Ever Evolving Theories of Records Selection
Authors: Kenosi Lekoko , Moathodi Trevor
Published: December 2012

The task of purging some records and retaining others for long term preservation in an archival repository has not been an easy one for records professionals. This task is even made more difficult by the fact that what is destroyed as useless by todays standards can prove to be of invaluable use tomorrow. Ideally, archivists would want to keep everything to avoid such errors of judgment. However, the reality of limited storage facilities and the rate at which records are generated makes it impossible to preserve each and every record produced. This paper, co- authored by a graduate student and his mentor, discusses theories of records selection to help shape the difficult decisions of to keep and what to eliminate in an archival repository. DOI: http://dx.doi.org/10.3329/el.v23i1.12116 Eastern Librarian Vol.23(1) 2012 pp.24-36
Buwayhid Library and its Management: A Historical Analysis
Authors: Shamsuzzoha ATM
Published: December 2012

Like the ancient Mesopotamian, Egyptian and Roman library, Muslim library has been introduced from the early age of Islam in demand of time. In the meantime, the emergence of Hazrat Muhammad (Sm.) had started a new era of knowledge and science in Islam. From the very beginning of Islamic civilization many institutions were established and renowned intellectuals and scholars of different fields were associated with those institutions. They made various worthy researches for the development of Muslim knowledge and sciences, in badly need of many libraries. So after several years when the Muslims came closer to the Persian literature and Greek sciences the Islamic library started its journey in the 7th century. So, for the acquisition of knowledge Muslim library has been initiated from the very beginning of Islamic heritage which was started with the mosque though formally introduced by the Baitul Hikmah, by Abbasid khalifa Al-Mamun (813-833). Gradually by the expansion of Islam it was circulated in various countries of the world. In these process Buwayhid ruler came closer to the Abbasid and taught the process of establishing various royal, private and public library. After the inception of royal library the Buwayhid introduced various important functions such as, collection of books, preservation system, translation, cataloguing, inclusion and clarification of the books. Besides these, recruitment, promotion, management of archives and modern system of budgeting were also salient features of their library management. The present study is an attempt to analyze the nature of the Buwayhid royal, private and public libraries. The study will also cover exclusively its library management and its various administrative functions. DOI: http://dx.doi.org/10.3329/el.v23i1.12120 Eastern Librarian Vol.23(1) 2012 pp.51-63
Using Natural Gradients to Infer a Potential Response to Climate Change: An Example on the Reproductive Performance of Dactylis Glomerata L.
Authors: Dainese Matteo
Published: December 2012

An understanding of the climate conditions governing spatial variation in the reproductive performance of plants can provide important information about the factors characterizing plant community structure, especially in the context of climate change. This study focuses on the effect of climate on the sexual reproductive output of Dactylis glomerata L., a perennial grass species widely distributed throughout temperate regions. An indirect space-for-time substitution procedure was used. Sixty mountain populations of the same target species were surveyed along an elevation gradient, and then, a relevant climate model was used to infer a potential response to climate change over time. Within each population, information on the number of stems, seed number and seed mass were collected. Resource investment in reproduction (RIR) was quantified as seed number × seed mass. A clear variation was found in the reproductive performance of D. glomerata along the elevational gradient: RIR improved with increasing temperature. The best model included only one term: the maximum temperature of the warmest month. This study demonstrates that mountain ecosystems offer particularly good opportunities to study climate effects over relatively short distances and suggests that warming will enhance D. glomerata’s reproductive output throughout its elevational range. Furthermore, it can be hypothesized that a potential migration of D. glomerata toward higher altitudes may occur in response to accelerated climate change.
Multi-Layer Assessment of Land Use and Related Changes for Decision Support in a Coastal Zone Watershed
Authors: Gitau Margaret , Bailey Nathaniel
Published: December 2012

In order to address the challenges in coastal regions, there is the need to understand the extent and impacts of past changes and their implications for future management. Land use data and remotely-sensed imagery are often used to provide insights into these changes. Often, however, existing land use data are inconsistent, thus differences observed through their analyses could also be attributable to error. The use of multiple layers of data, in addition and as related to basic land use layers, has been suggested in the literature as a method to mitigate such error. This study used existing land use data, population, stream flow, climate and water quality data with a view to determining what information could be discerned from multi-layer analyses and whether or how it could be used in watershed-level management decision making. Results showed that all the datasets provided useful, but not necessarily complemental, insights into spatial and temporal changes occurring in the watershed. The information obtained did, however, provide a broader perspective on watershed dynamics, which would be useful for watershed-level decision making. Overall, the multi-layer approach was found suitable in the absence of consistent land use data, provided results were interpreted in context, considering the historical perspective and with a working knowledge of the watershed.
Correction: Effect of AlF3 on the Density and Elastic Properties of Zinc Tellurite Glass Systems. Materials 2012, 5, 1361-1372.
Authors: Sidek Haji , Rosmawati Shaharuddin , Halimah Mohamed , Matori Khamirul , Talib Zainal
Published: December 2012

Due to an oversight, the data of the last column “Vs” in Table 1 was missing in the original version of this article [1]. [...]
A General Synthesis of Bis-indolylpiperazine-2,5-diones
Authors: Crooke Stephen , Whitlock Christine
Published: December 2012

The one-pot synthesis of three dragmacidin derivatives is reported. Sarcosine anhydride (4) is brominated and immediately reacted with the corresponding indole to produce the products, namely 3,6-bis(5′-methoxy-3′-indolyl)-1,4-dimethylpiperazine-2,5-dione (1), 3,6-bis(7′-methyl-3′-indolyl)-1,4-dimethylpiperazine-2,5-dione (2) and 3,6-bis-(6′-chloro-3′-indolyl)-1,4-dimethylpiperazine-2,5-dione (3), which are characterized by 1H-NMR.
Synthesis and in Vitro Antioxidant Activity Evaluation of 3-Carboxycoumarin Derivatives and QSAR Study of Their DPPH• Radical Scavenging Activity
Authors: Martínez-Martínez Francisco , Razo-Hernández Rodrigo , Peraza-Campos Ana , Villanueva-García Manuel , Sumaya-Martínez Maria , Cano Daniel , Gómez-Sandoval Zeferino
Published: December 2012

The in vitro antioxidant activities of eight 3-carboxycoumarin derivatives were assayed by the quantitative 1,1-diphenyl-2-picrylhydrazil (DPPH•) radical scavenging activity method. 3-Acetyl-6-hydroxy-2H-1-benzopyran-2-one (C1) and ethyl 6-hydroxy-2-oxo-2H-1-benzopyran-3-carboxylate (C2) presented the best radical-scavenging activity. A quantitative structure-activity relationship (QSAR) study was performed and correlated with the experimental DPPH• scavenging data. We used structural, geometrical, topological and quantum-chemical descriptors selected with Genetic Algorithms in order to determine which of these parameters are responsible of the observed DPPH• radical scavenging activity. We constructed a back propagation neural network with the hydrophilic factor (Hy) descriptor to generate an adequate architecture of neurons for the system description. The mathematical model showed a multiple determination coefficient of 0.9196 and a root mean squared error of 0.0851. Our results shows that the presence of hydroxyl groups on the ring structure of 3-carboxy-coumarins are correlated with the observed DPPH• radical scavenging activity effects.
Hydroxysafflor Yellow A (HSYA) from Flowers of Carthamus tinctorius L. and Its Vasodilatation Effects on Pulmonary Artery
Authors: Bai Yuhua , Lu Ping , Han Chenghua , Yu Chunyue , Chen Minggang , He Fa , Yi Dan , Wu Lijun
Published: December 2012

Flowers of Carthamus tinctorius L. are traditionally used in China to treat cerebrovascular and cardiovascular diseases. Hydroxysafflor yellow A (HSYA), the main constituent of Carthamus tinctorius L. flowers, is known for its multiple biological activities. In the present study, HSYA was isolated from Carthamus tinctorius L. flowers by a macroporous resin adsorption chromatography method coupled with a Waters high-throughput auto-purification system and it's vasodilatation effects on pulmonary artery (PA) were explored by an assay of tension study on rat pulmonary artery (PA) rings. Results suggest that HSYA possesses vascular relaxation effects on rat PA by activating the KV channel in pulmonary vascular smooth muscle cells (PVSMCs).
Comment développer une innovation thérapeutique qui bouscule les approches conventionnelles ?
Authors: Lévy Laurent
Published: December 2012

Résumé Nanobiotix conçoit des nanoparticules qui pénètrent dans les cellules tumorales pour amplifier l’efficacité de la radiothérapie. Reste à trouver les partenaires pour développer le produit, mener des études cliniques et le commercialiser...
La fonction du droit dans une économie globalisée
Authors: Coppens Philippe
Published: December 2012

Les échanges économiques ont, depuis des millénaires, rapproché des peuples et des civilisations et donc des cultures juridiques différentes. La globalisation de l’économie apparaît comme une accélération de ce phénomène, notamment par les nouvelles technologies de l’information. Mais lorsqu’on s’attache à l’analyse des relations entre le droit et l’économie, on s’aperçoit que le changement le plus fondamental réside ailleurs : dans l’opposition épistémologique entre une économie descriptive et une économie normative. En s’efforçant de devenir une physique des comportements, l’économie descriptive a voulu se dégager de toutes les questions normatives de justice distributive qui sont aux fondements du droit. Et elle a repris la distinction de Hume entre le monde des faits et le monde des valeurs. Mais le temps physique dans lequel s’observent et se prédisent les faits de l’homme économique rationnel n’est pas la durée dans laquelle vivent les sujets de droit raisonnables. C’est, nous semble-t-il, une des raisons principales pour lesquelles le droit est instrumentalisé par l’économie néo-classique.
Transcriptomic response of immune signalling pathways in intestinal epithelial cells exposed to lipopolysaccharides, Gram-negative bacteria or potentially probiotic microbes
Authors: Audy J. , Mathieu O. , Belvis J. , Tompkins T.A.
Published: December 2012

In order to understand the appropriate use of potentially probiotic Gram-positive microbes through their introduction in the gut microbiome, it is necessary to understand the influence of individual bacteria on the host-response system at a cellular level. In the present study, we have shown that lipopolysaccharides, flagellated Gram-negative bacteria, potentially probiotic Gram-positive bacteria and yeast interact differently with human intestinal epithelial cells with a custom-designed expression microarray evaluating 17 specific host-response pathways. Only lipopolysaccharides and flagellated Gram-negative bacteria induced inflammatory response, while a subset of Gram-positive microbes had anti-inflammatory potential. The main outcome from the study was the differential regulation of the central mitogen-activated protein kinase signalling pathway by these Gram-positive microbes versus commensal/pathogenic Gram-negative bacteria. The microarray was efficient to highlight the impact of individual bacteria on the response of intestinal epithelial cells, but quantitative real-time polymerase chain reaction validation demonstrated some underestimation for down-regulated genes by the microarray. This immune array will allow us to better understand the mechanisms underlying microbe-induced host immune responses.
El movimiento de los sin-papeles como sujeto de juridicidad
Authors: Barbero Iker
Published: December 2012

Desde un punto de vista formalista del Derecho, la producción de normas jurídicas está limitada a los poderes del Estado (legislativo, ejecutivo y judicial) así como a algunos agentes sociales legitimados por mecanismos de participación previstos en el ordenamiento jurídico. La capacidad normativa de agentes no reconocidos como sujetos de juridicidad únicamente puede ser investigada desde una perspectiva sociológica de la alternatividad del Derecho. Este texto presta atención a los actos de migrantes como sujetos de juridicidad, y especialmente a aquellos construidos social y normativamente como irregulares o autodefinidos como “sin-papeles”. A partir de la descripción de circunstancias sociales, jurídicas y políticas en torno a los encierros y otros actos de movilización que tuvieron lugar en el año 2001, se pretende analizar cuál fue la capacidad de los sin-papeles para incidir en la producción legal ya sea creando, modificando o alterando la agenda normativa en materia migratoria.
A Novel Approach for Active Contour Initialization in 3D Medical Image Segmentation
Authors: Peng Yan Jun , Zhang Shuai
Published: December 2012

Contour initialization is a big problem of the active contour model. Using the continuous features of the three-dimensional medical image, this paper proposes an initial contour prediction model. There are some changes in the boundary contours of the same object. We attribute these changes to continuous translation and similar deformation, and quantify into the centroid displacement and displacement of the point in the direction of Normal. The curve fitting method is used to predict the centroid displacement and the displacement of the points of the contours, which can provide more accurate prediction of changes in the contour. By predicting the initial contour, we have solved the contour initialization problem of the parametric active contour with external force using vector field convolution.
Classification of EEG Signals Using Filter Bank Common Spatial Pattern Based on Fisher and Laplacian Criteria
Authors: Wei Qing Guo , Wan Bin , Lu Zong Wu
Published: December 2012

Common spatial pattern (CSP) is a highly successful algorithm in motor imagery based brain-computer interfaces (BCIs). The performance of the algorithm, however, depends largely on the operational frequency bands. To address the problem, a filter bank was applied to find optimal frequency bands. In filter bank, CSP was applied in all sub-band signals for feature extraction. The feature selection is the key of filter bank method for increasing classification performance. In this study, coefficient decimation (CD) technique was used to devise filter bank, while Fisher score and Laplacian score were proposed as feature selection criterion. In off-line analysis, the proposed method yielded relatively better cross-validation classification accuracies.
Extraction of Online Monitoring Signals by Lifting Wavelet in Digital Substation
Authors: Wang Peng Bo , Chen Ping
Published: December 2012

On the requirement of fast signal processing and transmitting in time in digital substation, this paper presents an approach of lifting wavelet for extracting online monitoring signals of the electrical plants in digital substation. The lifting wavelet de-nosing algorithm is based on a threshold estimation formula based on Stain unbiased risk estimation (SURE). The de-noising experiments of stationary signals and non-stationary signal, i.e. simulative partial discharge (PD) signal are presented. The results show that the white noise can be removed effectively by the proposed lifting wavelet. Meanwhile, the lifting wavelet is a much less time-consuming scheme and exhibits a promising prospect in practical application.
The Research of Signal Detection Method Based on LFMCW Lidar
Authors: Xia Bo , Zeng Zhao Yang , Zhang Yong Le
Published: December 2012

In order to resolve the problem of echo signal threshold detection about LFMCW lidar system, a new signal threshold detection method based on the constant false alarm rate(CFAR) detecting technology is put forward. This method constructed the CFAR detection model from the analysis about the noise’s statistics characteristic in frequency domain, and then analyzed the relation between the false alarm rate and threshold, at last contrasted CFAR threshold with constant threshold under the condition that the noise intensity changes by simulating technique. The simulated experiment result indicates, the CFAR detecting technology applies to an echo signal threshold detecting is able to ensure that the false alarm rate size is constant invariable when the threshold value follows the noise intensity changes, thereby this method is not only improved the lidar’s acclimatization, but also enhanced the systematic detecting function of LFMCW lidar effectively.
An Adaptive Multiple LS Channel Estimation Method for MIMO System
Authors: Chen Jin Lun
Published: December 2012

Accurate channel estimation plays a key role in multiple-input and multiple-output (MIMO) communication systems. In this paper, we firstly discuss the popular linear least squares (LS) channel estimation and the multiple LS (MLS) channel estimation. Then an adaptive multiple LS (AMLS) channel estimate approach is proposed. Using numerical simulation, it is found that the proposed estimation method outperforms LS and MLS for a wide range of training SNRs.
Find Point Correspondences on Contour between Template Image and its Target with SVD and Euclidean Distance
Authors: Zhang Lu Yun , Wang Qiang , Liu Hai Yan , Wang Gang
Published: December 2012

A new algorithm is presented in this paper to determinate the point correspondences on contour between template image and its target after affine transformation. In the algorithm, the singular value decomposition（SVD）is applied to the contour point sets of the template and target image respectively for eliminating the influences of the shear and scale in the affine transformation. The Euclidean distance between the contour point and the center of the shape are taken as the feature to form the reference sequence and comparative sequences, and then grey relational analysis (GRA) is used to find the best correlation sequence. After two contour sequences with the best correlation are found, the corresponding points between the two contours can be decided also. Finally the affine transformation parameter can be calculated and image matching can be realized by this way. Compared with the similar methods, experiments show that the proposed method has lower computational complexity and better accurate for image matching.
Removing Blinks in Video-Oculography
Authors: Chen Xue Jun , Zhang Chen Hua
Published: December 2012

Video-oculography (VOG) is a non-invasive detection method used for eye movement. However, during testing, if object blinks, VOG would be difficult to acquire eye movement. A removing blink method based on Kalman Filter was presented. A cubic spline was employed to patch the removed data. Then simulation and experiment were done. The experimental results show that the method well predicts the next state. Compared to a threshold level, it eliminates blink artifact and patches the removed data. The method is a viable means of predicting pupil center for blink in VOG.
Design and Implementation of SoPC based Low power Asynchronous Image Processor
Authors: Prabakar T.N. , Lakshminarayanan G. , Seetharaman Gopalakrishnan
Published: December 2012

In this paper, design and implementation of SOPC (System on Programmable Chip) based Asynchronous pipelined Discrete Cosine Transform (DCT) is considered. For designing Asynchronous Pipelined DCT, a new approach is proposed. In this approach, Nios II embedded processor is used to control the asynchronous data flow. For implementation of Asynchronous pipelined DCT, Winograd algorithm with 6 stages (Combinational Logic Blocks) of operations is used. The intermittent data between stages are latched by using multiplexer based latches. The completion of each and every stage is informed to the Nios II processor using interrupts. In turn, Nios II processor generates various control signals to pass the intermittent data stored in the multiplexer based latches. In the proposed system, storage of intermittent data is done with multiplexer based latches instead of registers. This leads to minimum power consumption. The system is useful in water marking the patient details on to the patient records to transmit through Internet. The work has been carried out as a part of embedded remote patient monitoring system, in which the measured medical parameters and images of the patients are to be sent to the remote doctor through wired or wireless medium, along with the patient details. The system is implemented in EP1S25F780C5 Altera Stratix FPGA with Nios II embedded processor. Importantly, Nios II processor is also used to validate the DCT & IDCT results by comparing the results with a known set of test vectors.
Simultaneous Least Squares Wavelet Decomposition for Multidimensional Irregularly Spaced Data
Authors: Shahbazian Mehdi , Shahbazian Saeed
Published: December 2012

The multidimensional Discrete Wavelet Transform (DWT) has been widely used in signal and image processing for regularly sampled data. For irregularly sampled data, however, other techniques should be used including the Least Square Wavelet Decomposition (LSWD). The commonly used level by level (sequential) wavelet decomposition, which calculates the wavelet coefficients in each resolution separately, may result in a gross interpolation error. To overcome this drawback, a different approach called the Simultaneous Least Square Wavelet Decomposition, which computes all wavelet coefficients simultaneously, have been proposed by the authors. In this paper, we extend the simultaneous LSWD approach to the multidimensional case and show that this method has excellent reconstruction property for two dimensional irregularly spaced data.
Two-Dimensional Finite Difference Forward Modeling for Stable Point Power Field Based on Optimized k Value
Authors: Jiang Xin , Yu Sheng Bao , Luan Hui
Published: December 2012

The article presents a numerical simulation method for 2D resistivity finite difference forward calculation of point source. On the basis of traditional mixed boundary conditions and decomposition of linear equations, Xu's selection of the wave number k for Fourier inverse transform is using to obtain more accurate numerical results. The results show that this approach simplifies the problem of the numerical simulation for two-dimensional geoelectrical field and effectively control the simulation accurac
The Output Model of FOG North-Finding System Constructed by the ARMA Timing Analysis
Authors: Liu Wei , Chen Zhi Ping
Published: December 2012

This paper used the timing analysis to statistically analyze the output sequences of many FOGs which were using in the north-finding system. We confirm an optimal model basing the statistic characteristics, and finally advance a fixed algorithm to estimate the parameters of the model. The results show that the modeling method has the universality to the output data of FOGs in the north-finding system, and also can be used to get the precise parameters in order to serve the following filter.
Trust-Based Particle Swarm Optimization for Grid Task Scheduling
Authors: Huang Wen Ming , Deng Zhen Rong , Li Ren Hua , Tang Xing Xing
Published: December 2012

To solve the problem of grid task scheduling, an improved algorithm based on particle swarm optimization (PSO) is presented. This paper introduces mutation into PSO. Mutation makes the algorithm jump out local optimization. To some extent, it overcomes the inherent flaw of PSO that falling into local optimization. This paper also introduces trust mechanism into the algorithm to improve the service performance of grid system. The result of simulation experiment shows that the improved algorithm not only makes the complete time minimum, but also have more tasks executed successfully.
Research on Improved Ant Colony Algorithm for the Optimization of the Large Storage Picking Path Based on RFID
Authors: Wen Pei Zhi , Wang Yong Bo , Li Li Fang
Published: December 2012

For the realtime updating and strong randomness of the information, large RFID-based warehousing picking path optimization job requires to make decision continuously. It is different from the traditional picking path Problem. This paper proposed an Improved Ant Colony algorithm in order to solve the optimization of the large storage picking path based on RFID. Distributed Strategy, Dynamic Response Strategy and Time Waiting Strategy are adopted to improve the candidate set, meanwhile, adjust operator and parameter selection. Experimental results show that the convergence speed of this algorithm with high precision, a better solution to the optimization of picking operation based on RFID.
Auto-Clustering Algorithm for Heterogeneous Information Network Using Improved Particle Swarm Optimization
Authors: Liu Chang Ping , Liu Yang , Chen Jia Shi
Published: December 2012

NLM (National Library of Medicine) is one heterogeneous information network, which mixes scholars, MeSH (Medical Subject Headings), journals and research domains. Mining the rules and knowledge concealed among NLM is one hot topic in social computing applications. In this paper, an auto-clustering algorithm for NLM was proposed to uncover the embedded knowledge concerned with medical scholars and medical journals. This algorithm adopts particle swarm optimization (PSO) as iterating algorithm to automatically cluster scholars and journals. In addition, our algorithm utilizes the mutation in genetic algorithm (GA) to overcome local optimization, which is one outstanding bottle neck in various heuristic methods. The effectiveness of our algorithm is demonstrated by applying it to a subset of NLM.
A High Precision Pico-Amperes Scale Current Measurement System in Radiation Detection
Authors: Wang Jing , Li Bin Kang , Ruan Lin Bo , Tian Geng , Li Xian Bao , Qu Hong Guang
Published: December 2012

A weak current measurement system is developed. It is mainly used in the accurate measurement of weak current in radiation detection. The principle of the measurement system is introduced. The interference protection measures of current to voltage (I-V) conversion and amplification unit, the technology of ∑-△ ADC and the program design of micro-programmed control unit are described. The system is able to communicate with the computer controlled platform by the USB interface, which has the functions of storage, range selection, data display, data plotting and so on. The measuring range is from 0.1pA to 2.1mA, and the resolution is 5½ bits. The system has been successfully used in the detection of radiation.
Study and Discussion on the Theory of Compressive Sensing
Authors: Zhu Ying , Jia Yong Xing , Wang Yuan
Published: December 2012

Compressive sensing(CS)is a novel information theory proposed recently.It broke through the restrictions of the traditional Nyquist sampling theorem on the sampling frequency,which can only use fewer sampling signals to describe the original signals. This article introduces the theory of CS including three main process like sparse representation, mesurement matric design and signal reconstruction.Then it also discusses the issures requiring improvement about the algorithm,the hardware implementation ,finds the reasons and gives some advices in follow-up studies.
The Study on Convergence and Convergence Rate of Genetic Algorithm Based on an Absorbing Markov Chain
Authors: Jiang Jing , Meng Li Dong , Xu Xiu Mei
Published: December 2012

The study on convergence of GA is always one of the most important theoretical issues. This paper analyses the sufficient condition which guarantees the convergence of GA. Via analyzing the convergence rate of GA, the average computational complexity can be implied and the optimization efficiency of GA can be judged. This paper proposes the approach to calculating the first expected hitting time and analyzes the bounds of the first hitting time of concrete GA using the proposed approach.
A Determinant Elimination Method for Bottleneck Assignment and Generalized Assignment Problems
Authors: Wu Wen Bo , Jia Yu Fu , Sun Hong Xing
Published: December 2012

The bottleneck assignment (BA) and the generalized assignment (GA) problems and their exact solutions are explored in this paper. Firstly, a determinant elimination (DE) method is proposed based on the discussion of the time and space complexity of the enumeration method for both BA and GA problems. The optimization algorithm to the pre-assignment problem is then discussed and the adjusting and transformation to the cost matrix is adopted to reduce the computational complexity of the DE method. Finally, a synthesis method for both BA and GA problems is presented. The numerical experiments are carried out and the results indicate that the proposed method is feasible and of high efficiency.
Application of Taguchi Method in the Optimization of Processing Parameters for Green Fiber
Authors: Wang Shu Wen , Su Te Li
Published: December 2012

Since polylactide (PLA) fiber, green fiber, is given with better chemical inertia, easiness of processing, biodegradation, it can be completely degraded in soil and water into carbon dioxide and water. Fiber products made of it is not found with features as favorable moisture absorption, wrinkle-resistance, resilience, curliness, dyeability, biocompatibility, and resistance to ultraviolet light; besides, PLA fiber is given with broad prospect of applications, and can be widely used on industry, agricultural purpose, forestry, clothing, fishing, and hygiene and medical treatment and many other domains. Therefore, this study would focus on optimizing processing parameters of melt spinning equipment by using Taguchi method for PLA fiber.
Design Optimization of Processing Parameters for Polypropylene Fiber Based on the Taguchi Method
Authors: Wang Shu Wen , Su Te Li
Published: December 2012

Melt spinning is the method that is most frequently used for manufacturing man-made fibers, while as-spun-fiber is the most important physical nature mainly of breaking strength for processing parameter will base on spinneret temperature, cooling temperature, cooling wind speed, and winding speed and so on to affect its physicality. First of all, suitable orthogonal arrays will be chosen to be applied on experiment plan to conduct experiment, and then it will work with SN (signal-to-noise) ratio and main effect analysis to appreciate the extent of impact of processing parameter on the quality, and confirm its reproducibility. As such, the optimized combination of processing parameters can be obtained.
Exploring the Learning Effectiveness of Students with Different Free Choice Cooperative Learning Values: Taking Example of how Operating Optical Time-Domain Reflect Meter Tackle the Optical Fiber Circuit Measurement Problem
Authors: Juan Chih Yung , Chou Ching Yang , Lin Huann Shyang
Published: December 2012

This research is aimed at exploring the learning effectiveness of students with different free choice cooperative learning values. And to understand the learning condition of students who operate Optical Time-Domain Reflect meter to tackle the optical fiber circuit measurement. The research findings showed that : (A) Students in the high-scoring and low-scoring group with free choice cooperative learning value created a prominent difference of learning effectiveness on how they operated OTDR to tackle the optical fiber circuit measurement problem in the learning situation of free choice cooperative learning;(B) students in the high-scoring group with free choice cooperative learning value produced a discussion content with more advanced operation skills in free choice cooperative learning situation. It manifests that there is a prominent difference of the active learning effectiveness on students in high-scoring group (cooperative sharing category) with free choice cooperative learning value compared to students in low-scoring group (individual competitive category) due to the free choice cooperative learning situation, and the content of discussion on advanced operation skill also reached a prominent difference.
Application of Multimedia Animation Technology in Learning Power Updating Knowledge
Authors: Liao Si Zhe , Liang Jun Hui , Li Ya Dan
Published: December 2012

In recent years, with the rapid development of electric power industry, the electric power equipment and technology is ongoing an unprecedented update, which leads to the demand of updating electric power employee’s knowledge. The traditional training method has a serious contradiction of engineering an learning, low training effectiveness and high cost, thus, this paper brings up a training method based on multimedia animation technology and supplemented by computer software and database technology. In practical application, the training method improved the learning efficiency of electric power employees and greatly reduced the cost of training.
Modeling Study on Random Error of Fiber Optic Gyro
Authors: Zhang Fan
Published: December 2012

An accurate modeling method for the random error of the fiber optic gyro (FOG) is presented. Taking the FOG in the inertial measurement unit of one specific inertial navigation system as the subject investigated, the method is composed of the data acquisition, preprocessing, establishing the FOG AR(2) model and performing Kalman filtering based on the model. The filtering result and the Allan variance analysis of FOG prove that the method effectively reduces the FOG random error, decreasing the angle random walk, zero-bias instability, rate random walk, angular rate ramp and quantification noise of FOG signals to less than one half of the corresponding values before the filtering of FOG random errors, which improves the accuracy of FOG.
Angle Measurements with Laser
Authors: Wang Yang , Yan Chang Xiang , Gao Zhi Liang
Published: December 2012

Laser is widely used in angle measurements. This paper presents several frequently used methods of angle measurement that utilize laser, including：autocollimation angle measurement, angle measurement based on internal-reflection effect, laser interference angle measurement, angle measurement with ring laser and angle measurement with CCD. The principle, actualities, application situation, superiority and defects of each method are discussed.
Traditional Chinese Medicine Clustering Analysis Based on Near-Infrared Spectroscopy
Authors: Long Chang Jiang , Wan Peng , Li Xuan
Published: December 2012

The Chinese materia medica is classified into several categories according to the major treatment function by experience in the traditional Chinese Medicine. This classification should have material basis. As the medicines have so many ingredients, it is hard to only use the chemical methods and biochemistry methods to analyze the Chinese materia medica. Near infrared spectroscopy is a nondestructive testing method and it can provide structural information of organic molecules which are the main effective components of the Chinese materia medica. We firstly get the NIR spectrum of some Chinese medicine, and then use LSA technology to process the data and cluster them. The result is quite coincident with the Chinese traditional medicine classification.
3-D Eddy Currents Analysis in Orthotropic Materials Using Truncated Region Eigenfunction Expansion Method
Authors: Bai Yu Jie , Zhang Xiao Zhang , Jiang Lei , Tang Chang Liang
Published: December 2012

A model for 3-D eddy currents analysis in orthotropic materials such as CFRPs is proposed. With artificial magnetic insulation boundary conditions, we solved a vector differential equation which describes the magnetic vector potential in the CFRPs materials with a delta coil near it using the method of separation of variables. As a result of the truncated region eigenfunction expansion method, a series solution was obtained, from which we got the eddy currents distribution. The distribution shows a good agreement with the work by others.
Four Order ESD Generator Circuit Model and its Simulation
Authors: Wang Jin Shan , Wang Ke , Wang Xiao Dong
Published: December 2012

Basis international electrician committee issued IEC61000-4-2 testing standards, proposed a new ESD current expression. Using Laplasse transform, established the ESD system mathematical model, according to the mathematical model, construction of passive four order ESD system circuit model and active four order ESD system circuit model, and simulation. The simulation results meet the IEC61000-4-2 standard, and verify the ESD current expression, the mathematical model and the circuit model of consistency.
The Research of Glucose Solution Based on Photoacoustic Measurement
Authors: Zhao Deng Ji , Liu Guo Dong , Ren Zhong , Zeng Lv Ming
Published: December 2012

Based on the principle of photoacoustic,blood glucose can be non-invasive monitoring of in the NIR region.The system irradiates to the glucose solution by opo laser,then the signals are received by photoacoustic probe and processed by the oscilloscope, finally imported into the computer.By the least squares method,the data repeatedly fits to make the mean square error of the glucose concentration less than 5mg/dl.The experimental results show that:photoacoustic measurement method can achieve a certain precision, with the value of further research.
A Complex Voltage Ratio Measurement System for the Audio Frequency Range
Authors: Yue Chang Xi , Mohns Enrico , Zhou Feng , Lei Min , Zhang Shu Han , Xiang Qiong
Published: December 2012

This paper describes the setup of a complex voltage ratio measurement system for the audio frequency range. A wideband two-channel digitizer and a differential analogue channel switching front-end are used as the heart of the system. The complex error, frequency response characteristics and short term stability of the system are tested in this paper. The errors range from 1×10-7at 50 Hz to 10×10-6at 200 kHz in ratio 1:1 test with 6 V input voltages. And errors are below ±8×10-7and ±0.06 μrad in ratio 1:1 test with a 4V power line (50 Hz) input voltage over 64 hours. The test results and comparisons between with and without channel exchange mode confirm the remarkable improvement regarding the suppression of the static mismatch errors of the digitizer and show the usefulness of the system at 50 Hz too.
Study on Neutron Energy Spectrum in the TMSR
Authors: Zhou Xue Mei , Liu Gui Min , Liu Ya Fen
Published: December 2012

Neutron energy spectrum has a high correlation with all kinds of nuclear processes in nuclear reactor. Neutron energy spectrums of the TMSR in some conditions were simulated using MCNP5.The distributions of thermal neutrons, epithermal and resonance neutrons, and fast neutrons in axial and radial were simulated, respectively. The simulation results indicate that thermal neutrons have a high ratio and control rods inserting the nuclear reactor have a serious effect on neutron distribution. The study of neutron energy spectrum is theoretical basis for measurement in the TMSR.
Research on Over-Ground Electromagnetic Inspection Technique for Buried Pipelines
Authors: Lu Shuang Hao , Han Zan Dong , Wang Wei Bin , Feng Zhan Jun
Published: December 2012

Most of pipeline-inspection techniques above ground can only locate the damages of the pipeline anticorrosive coating and give no information regarding the metal loss defects. Based on the detection and analysis of the AC magnetic field around the pipeline, this paper presents an alternative technique, which is able to detect and distinguish the metal loss defects. It turns out that the inspection based on lock-in amplification technique has a higher magnetic induction resolution of 10e-10T. And the analysis of frequency spectrum on magnetic field can be applied to recognize the metal loss defects on buried pipelines effectively.
Research on Spatial Distribution and Mutual Inductance of Superconducting Pancake Coils
Authors: Guo Fang , Li Zhi
Published: December 2012

This paper studies the numerical calculation method of mutual inductance between two superconducting pancake coils. And the calculation results are proved through experiment. Use this calculation method, the isoline map of two superconducting pancake coils’ coupling coefficient with the different spatial distributions is calculated. Then the designer can rapidly design the spatial distribution of superconducting pancake coils according to the coupling coefficient they needs. Specially, there is a curve of coupling coefficient equals 0 in the isoline ma. For the occasions which want to eliminate the mutual inductance between two superconducting pancake coils, this curve can provide a good guidance for design a compact layout and reduce the volume. Finally, the 0 value curve is tested under the guidance of calculation result. Through this experiment, the correctness and engineering guidance of isoline map is verified.