bluuebunny/crossref_metadata_2025 huggingface dataset:
Sustainable Public Procurement: Realization of the Social Aspect in Republic of Lithuania
Authors: Kanapinskas Virginijus , Plytnikas Žydrūnas , Tvaronavičienė Agnė
Published: January 2015

Public procurement concentrates large public sector’s purchasing power, and has a significant impact on each country’s economic development. The purpose of public procurement procedure is transparency, non-discrimination and accordance to the principles of fair competition in acquisition of goods, services and works necessary for the smooth functioning of the public administration. Besides, public procurement can be one of the most important instruments for sustainable development and other purposes useful to the whole society and the economy of the country. This article briefly discusses the concept of sustainable public procurement, reveals its main ideas and applications. One of them, the social sphere, was chosen the main object of the research. The possibility to decrease unemployment, to increase an integration of socially vulnerable group, and to achieve other socially-oriented goals through an effective implementation of the social aspect of sustainable public procurement has been illustrated. Thus, the article analyses the concept of social procurement, assesses the current situation in Lithuania, overviews the good practice of other countries and provides recommendations for measures to extend the application of socially oriented procurement.
Moda en piedra en el siglo XV. Análisis iconográfico de las laudas gallegas con «tocado de rollo»
Authors: Rey Cabezudo Mónica
Published: January 2015

El objetivo del presente artículo es hacer una revisión sobre un conjunto de laudas coruñesas con un extraño tocado identificado de modo tradicional con los denominados rollos. A través del análisis iconográfico y comparativo se discernirá la cronología de las piezas y se establecerán paralelismos con otras laudas femeninas del ámbito gallego, demostrando que la moda puede ser un elemento clave a la hora de analizar, comprender y datar una obra de arte.

[gl] O obxetivo do presente artigo é facer unha revisión sobre un conxunto de laudas coruñesas cun extraño tocado identficado de modo tradicional cos denominados rollos. A través do análisis iconográfico e comparativo discernirase a cronoloxía das pezas e estableceranse paralelismos con outras laudas femininas do ámbito galego, demostrando que a moda pode ser un elemento clave a hora de analizar, comprender e datar unha obra de arte.
Poster Gallery
Authors: Gaudens Asunción , Morales Jorge
Published: January 2015

Not Available
Communism’s “Bright Past”: Loyalty to the Party despite the Gulag
Authors: Adler Nanci
Published: January 2015

The Soviet Gulag has joined the tragic annals of what has been described as “man’s inhumanity to man”. Yet some prisoners, many of whom were falsely convicted, emerged from the experience maintaining their loyalty to the system of government that was responsible for their imprisonment. The hardship of the camp experience, and the hardship of return, stamped ex-prisoners for life. In camp, they struggled to survive. After camp they struggled to reintegrate, to re-unite, and for Party members, to renew their vows with the Party. This article focusses on Gulag prisoner and returnee accounts that profess enduring faith in the Party and the Communist project. With the materials that have become available, we can now begin to understand this phenomenon. Explanations include: Communism as secular religion, cognitive dissonance, functionalism, and the traumatic bond. As we witness a persistent trend to manage national and public memory by repressing the memory of repression in today’s Russia, the issue of enduring loyalty among Gulag returnees may offer some insight into questions related to national memory and the dynamics of repressive regimes.
Extremadura: Behind the material traces of Franco’s repression
Authors: Muñoz Encinar Laura , Chaves Palacios Julián
Published: January 2015

After the failed coup d’état of July 17th, 1936 and after the start of the Spanish Civil War that followed it, rebels carried out a repressive strategy based on the execution of thousands of people as a key tool of social control. The socialization of fear and terror through humiliation, killing and disappearance would become the main strategy employed throughout the war and the post-war period. In this context, perpetrators would exercise repressive practices on victims and their bodies. As a result, countless mass graves were opened in order to hide the bodies of victims. In the region of Extremadura, these mass graves have been investigated through the application of archeology and physical anthropology as disciplines of research and historical knowledge production. The exhumations, have given us a diachronic point of view of the repressive strategies developed, associated with different contexts between 1936 and 1946. Analyses of mass executions linked to rebels’ occupation of territories in this region, systematic rearguard killings in occupied areas, elimination procedures carried out in concentration camps and prisons and the fight against the armed guerrilla during the dictatorship, are the main contributions of this article.
When memory becomes heritage: Experiences from Santiago, Chile
Authors: Chiara Bianchini Maria
Published: January 2015

This article explores the relationships between memory politics and urban heritage in the construction of a twenty-first century democratic society. It focuses on the case of Chile and concentrates on three examples of public buildings in the capital city, Santiago. Given what can be considered a difficult heritage –linked to the recent experience of dictatorship and state sponsored violence– these buildings have been in recent years objects of heritage politics, directed to address a public memory related to those events. Based on these case studies, the article critically discusses the materialization of the dominant human rights discourse in the current memory politics affecting Santiago’s urban heritage.
Human-Computer Interaction in Consumer Behaviour
Authors: Servidio Rocco , Davies Barry , Hapeshi Kevin
Published: January 2015

Human-Computer Interaction (HCI) studies play an important role in the design, implementation, and evaluation of a new generation of graphical user interfaces designed to support consumer behaviours and information needs. In recent years, the spread of new virtual environments and innovative tools have revolutionized the field of e-commerce. Although new digital environments can enable or facilitate certain user activities, the quality of the user interface will remain a continuing challenge. The chapter aims to underline the relationships between HCI studies and consumer behaviour, focusing attention on virtual environments for electronic and Internet e-commerce (online retail) services. The potential of multi-modal interfaces and virtual environments for business and marketing are examined by: (1) providing an overview of the relationships between HCI and consumer behaviour, (2) showing how different interaction modalities can enhance the communication process between user and consumer system, (3) showing how digital and interactive technologies can offer to the consumer many advantages and unique opportunities in exploring information and products, and (4) new directions for possible future research.
Technological Advances and Teaching Innovation Applied to Health Science Education
Authors: Juanes Juan A. , Ruisoto Pablo
Published: January 2015

The objective of this special issue under the title “Technological advances and teaching innovation applied to health science education” is to improve health science education, to encourage the information exchange and dissemination regarding different training aspects in medical science. Technological procedures in teaching entail an important adequacy and teaching content analysis to transmit and be acquired by students, as well as their careful presentation so that the message and knowledge reach the student more effectively. Due to this, the design of technological applications is very important so that is becomes attractive to the user, and the time spent in the learning process helps optimize it and facilitate its knowledge. The authors will introduce, to teachers and researchers, current technological application tools and their possibilities in education; providing complementary training elements that help improve the teaching and learning process in health sciences. How these application of computer technologies in education broadens the action and intercommunication possibilities between teachers and students, allowing access to new means of exploration and representation, together with new ways to access knowledge through diverse types of tools: powerful body structure visualization, multimedia imagery, computer simulations, stereoscopic visualization, virtual and augmented reality techniques, computer platforms for resource and document storage and mobile devices will be further discussed.
Mathematics Acquisition and Immigrant Children
Authors: Estes Judi Simmons , Choi Dong Hwa
Published: January 2015

Given that early mathematics education lays the foundation for later mathematics achievement, teachers of young children have the responsibility and challenge of providing effective mathematics instruction to all children, including those who are immigrants. This chapter discusses four key points relevant to mathematics acquisition and immigrant children: (a) bilingualism as an asset, (b) strengths of immigrant families, (c) teachers' mathematical knowledge, and (d) developmentally appropriate mathematics environment. It is suggested that institutions of higher education, administrators, and teachers of young children consider those four key points, and that each topic is linked to on-going professional development for the purpose of effective instruction.
Professionalising Natural Science Education and Multipronged Open Distance Learning
Authors: Narasimharao B. PanduRanga
Published: January 2015

Tobias et al. (1995) postulated in their book on “Rethinking Science as a Career” that Master's programs could produce graduates who provide the same level of expertise and leadership as professionals do in other fields. They say that they would do so by having the ability to use the products of scholarship in their work and by being familiar with the practical aspects of emerging problem areas. If we consider natural science consisting of physical sciences, biological sciences, mathematics, geosciences, and computer science, degrees in computer science and geosciences served as credentials for practice, whereas physics, chemistry, and biological sciences served as classical graduate education. Robbins-Roth (2006) collected 22 career descriptions for science graduates ranging from public policy to investment banking, and from patent examining to broadcast science journalism. There are several sectors of the society where the principles and knowledge of these science disciplines are used. On the other hand, there are many of the graduates in these disciplines who either are working in areas completely unrelated to their education and training or are unemployable. The need for preparing the science graduates professionally is well recognized (Schuster, 2011; Vanderford, 2010; Narasimharao, Shashidhara Prasad and Nair, 2011; Chuck, 2011).
Curriculum Contents of Digital Library Education (DLE) in Europe
Authors: Shuva Nafiz Zaman , Audunson Ragnar Andreas
Published: January 2015

Digital library research has attracted much attention around the world. Much of the research and projects funded by several agencies and governments around the world focus on how DLs can aid education; very few studies and projects are funded that address teaching and learning about digital libraries. There has been very little literature on digital library education in Europe. This chapter explores the existing Digital Library curriculum scenario in European Library and Information Science (LIS) schools as well as to find out the preferred DL curriculum contents as rated by the European LIS faculty members. Survey research methodology is used in this study. Three directories of institutions of higher education in LIS (i.e. IFLA, EUCLID, and BAILER) were consulted to find the potential respondents of the current study. The questionnaire was sent to 159 LIS schools/departments in Europe; of those, 54 LIS schools/departments participated in this study. The result indicates that the majority of LIS schools/departments have already integrated the concept of digital libraries into their curriculum. A list of preferred content by LIS faculty members for DL education is presented. Comprehensive literature reviews on DL education aspects have been conducted. The findings of the study would help creating a uniform DL curriculum for Europe and other regions of the world.
Online Simulator Use in the Preparing Chemical Engineers
Authors: Yerrick Randy , Lund Carl , Lee Yonghee
Published: January 2015

Active learning strategies (including simulations) have been promoted by engineering education reformers as an effort to move traditional STEM teaching toward more constructivist practices. In this study chemical engineering students were studied during the implementation of simulators to promote critical thinking. While many have studied achievement and perceptions of students to measure engineering tools and their development, this study specifically examined students' outcomes connecting the tool to specific teaching and learning strategies. A case study was conducted using pre- and post-test, survey questionnaire, individual interviews, and classroom observations. Results showed the use of simulator was associated with increases in students' scores but the novelty of innovation was not the single explanation for increased scores or favored technology usage. Interviews and other qualitative data suggested that outcomes may closely tie teaching strategies to the effectiveness of the tool rather than the focus on the tool itself. Implications for teaching and future research are discussed.
The GeoGebra Institute of Torino, Italy
Authors: Robutti Ornella
Published: January 2015

This chapter is focused on the GeoGebra Institute of Torino, Italy (http://www.geogebra.unito.it/), founded in July 2010 at the Dipartimento di Matematica dell'Università di Torino (http://www.dm.unito.it) and operating under the auspices of the human resources of the association La Casa degli Insegnanti (http://www.lacasadegliinsegnanti.it/PORTALE/), which is in charge of organising courses for teachers. GeoGebra is a dynamic geometry software that has had a large diffusion in educational and academic institutions in recent years. This wide diffusion opens new fields of research in mathematics education, in continuity with other software of the same kind, such as Cabri-Géomètre or The Geometer's Sketchpad. The main research questions deal with teaching practice, pedagogical and methodological choices, teacher education, and teaching/learning experiments at different school levels. Furthermore, several issues relating to the learning of mathematics with GeoGebra, in the context of research and teaching practice are highlighted.
Web-Based Simulations for the Training of Mathematics Teachers
Authors: Meletiou-Mavrotheris Maria , Mavrou Katerina
Published: January 2015

A crucial step in learning to fly an airplane is to use a simulator, where the risks are minimized or even eliminated, and similar problems and hazards can be replayed and reflected upon time after time. A key aspect of this case study is to exploit such techniques by adopting the latest technological developments in simulating teaching practice to give pre-service teachers more “teaching” experience than would otherwise be practical or possible in typical student teaching placements. The case study explores the affordances offered by digital simulations for contextualizing pre-service teachers' learning of mathematics content and its pedagogy. Using the simulated classroom SimSchool as a virtual field experience, the authors seek to bridge the classic gap between teacher preparation and practice by creating reality-based learning contexts that strengthen pre-service teachers' appreciation of how to implement standard-based mathematics instruction in complex classrooms.
Using Project-Based Learning to Teach Sustainability Issues to Elementary Students
Authors: Weiland Ingrid , Pokral Elisa , Cook Kristin
Published: January 2015

This chapter describes a project-based learning unit on sustainability that was implemented in a fourth grade classroom by an informal educator (the second author) employed by a local waste management district. Previous instruction by the informal educator consisted of one-hour lessons that were separate units lacking the project-based learning format and transition links. This chapter describes a mixed-method case study in which pre and posttest tests as well as focus group interviews assessed students' learning as a result of participating in a cohesive project-based learning unit designed by the authors. There was a statistically significant change (p<0.05) in students' pre to posttest scores, and focus group interviews indicated that students could elaborate much more deeply on their ideas about sustainability after the program. The authors conclude that project-based learning can support students' understandings of sustainability while providing an engaging and enriching format to informal educator programs.
A Comparative Study on Undergraduate Computer Science Education between China and the United States
Authors: Jiang Eric P.
Published: January 2015

With the rapid growth of the Internet and telecommunication networks, computer technology has been a driving force in global economic development and in advancing many areas in science, engineering, health care, business, and finance that carry significant impacts on people and society. As a primary source for producing the workforce of software engineers, computer scientists and information technology specialists, computer science education plays a particularly important role in modern economic growth and it has been invested heavily in many countries around the world. This chapter provides a comparative study of undergraduate computer science programs between China and the United States. The study focuses on the current curricula of computer science programs. It in part is based on the author's direct observation from his recent visits to several universities in China and the conversations he had with administrators and faculty of computer science programs at the universities. It is also based on the author's over two decades experience as a computer science educator at several public and private American institutions of higher educations. The education systems in China and the United States have different features and each of the systems has its strengths and weaknesses. This is likely also true for education systems in other countries. It would be an interesting and important task for us to explore an innovative computer science education program, which perhaps blends the best features of different systems and helps better prepare graduates for the challenges working in an increasingly globalized world. We hope the study presented in this chapter provides some useful insights in this direction.
Comparison of Two Classrooms
Authors: Ergen Barış
Published: January 2015

This chapter investigates how students attending environmental science classes in the Department of Urban and Regional Planning at Bozok University in 2010-2011 and 2011-2012 fall semesters learn concepts related to environmental science through a comparison of two different classes, using the Cosine Similarity Measure (CSM) method. The study demonstrates that the students lack the necessary knowledge about the concepts used in urban and regional planning literature and international conventions.
Using Technology in a Studio Approach to Learning
Authors: Newman Dianna L. , Clure Gary , Deyoe Meghan Morris , Connor Kenneth A.
Published: January 2015

Presented in this chapter are findings related to the use of the Mobile Studio concept in STEM classes including how the use of an innovative technology that replaced traditional equipment in STEM classes was able to increase student learning. Findings also show that the Mobile Studio Learning Platform supports variations in instructional style and goals as well as learning across different content areas and type of implementation. Use of the Mobile Studio was piloted and implemented in multiple undergraduate engineering courses; the pedagogy expanded beyond this original setting to include use in K-14 sites as well as pre-service and in-service training for science teachers. Data from multiple sources are presented in support of the finding that diverse learners with various instructional needs and user characteristics are positively served by the use of student-centered mobile technology within the domain of STEM education.
Presenting Physics Content and Fostering Creativity in Physics among Less-Academically Inclined Students through a Simple Design-Based Toy Project
Authors: Amir Nazir , Subramaniam R.
Published: January 2015

One of the emphases of 21st century science education is in producing students who are creative and who can contribute to the economy. Physics affords immense scope in this regard. This study illustrates an instructional teaching approach to present the physics concepts of density and forces in liquids to kinesthetic students and, at the same time, offers an avenue to foster creativity among them through the fabrication of variants of a popular physics toy: the Cartesian diver. It was conducted during curriculum time in a physics laboratory. Results showed that the students were able to showcase their creative abilities through knowledge from physics in this design-based toy project. Students found the pedagogical approach suitable for learning physics content and also a fun way to showcase their creative abilities through knowledge from physics. They also developed positive attitudes towards studying physics after going through this project.
Fuel Recognition Using Particle Swarm Optimization of Classification Trees
Authors: Radziszewski Leszek , Kekez Michał
Published: January 2015

Work cycle control of a compression ignition internal combustion engine based on cylinder pressure and injection pipe pressure allows optimizing many aspects of engine performance. Selected descriptors of pressure courses can be used for constructing models and classifiers to describe engine work conditions and fuel supply. The work presents the methodology for obtaining classifiers that recognize the type of fuel injected into a cylinder with accuracy acceptable in practical technical applications. These classifiers were constructed by means of two different methods from the field of computational intelligence: classification trees induction and particle swarm optimization of the classification trees. The accuracy and transparency of the proposed models were compared.
The Modified Power Method for Solving the Eigenvalue Problem with the Use of Idempotent Matrix
Authors: Palej Rafał , Krowiak Artur , Filipowska Renata
Published: January 2015

The work presents a new approach to the power method serving the purpose of solving the eigenvalue problem of a matrix. Instead of calculating the eigenvector corresponding to the dominant eigenvalue from the formula , the idempotent matrix B associated with the given matrix A is calculated from the formula , where m stands for the method’s rate of convergence. The scaling coefficient ki is determined by the quotient of any norms of matrices Bi and or by the reciprocal of the Frobenius norm of matrix Bi. In the presented approach the condition for completing calculations has the form. Once the calculations are completed, the columns of matrix B are vectors parallel to the eigenvector corresponding to the dominant eigenvalue, which is calculated from the Rayleigh quotient. The new approach eliminates the necessity to use a starting vector, increases the rate of convergence and shortens the calculation time when compared to the classic method.
Preliminary Research on Applying Self-Excited System for Bridge Stress Measurement
Authors: Dominik Ireneusz , Lalik Krzysztof , Dwornicka Renata
Published: January 2015

Autodyne effect is an improvement to radio signal amplification using the light bulb type amplifier. By adjusting the tuning of this tuned circuit, Armstrong was able to dramatically increase the gain of the amplifier. Further increase in tuning resulted in amplifier reaching self-oscillation.
Optimal Strategy of the Electricity Sale Distribution for Deterministic Generation in Long-Term and Real-Time Markets Based on Risk Factors
Authors: Li Ji Qing , Xie Ming Jiang , Zhang Yu Shan
Published: January 2015

There are many various patterns for electricity market. Different countries adopt different patterns according to their own characteristics. However, no matter what pattern they adopt, there must be a certain structure similar to long-term market and real-time market where power sellers usually make electricity transaction. From the view of electricity power sellers, it is the key for hydropower enterprise (Power seller) to find an optimal sale strategy which can maximize the amount of electricity sale while minimizing the probability of risk. In this paper, on the base of analysis on the deterministic gross generation, a mathematic model is established to gain the maximal income of electricity sale in the case of considering risk factors, and to investigate the relationship between risk factors and electricity sale distribution in the two markets, long-term market and real-time market. Then, subsequently, the optimal strategy of electricity sale distribution of gross generation will be obtained in every market in order to maximize the total expected benefit. The feasibility and validness of the Model are verified by its application to a case as well.
Design of DDS Based on FPGA Technology
Authors: Jiang Wei , Yuan Fang , Yang Liu Qing
Published: January 2015

This paper introduces the working principle and structure of direct digital frequency synthesizer. This paper select the technology of lookup table to design DDS because it has many advantages such as less consumption hardware resources, simple structure, output only small delay and so on. As a result, signal generator can produce many waveforms with good stability and high frequency resolution. Finally, test showed that the output wave of triangular signal frequency is greater than 1MHz and the highest sine wave frequency is 30MHz, the value of peak to peak is continuously adjustable in 50mV ~ 4V range. The result of study will provide theoretical guidance for the design of DDS.
Fabrication and High Temperature Characterization of 1200V-15A 4H-SIC JBS Diode
Authors: Liu Ao , Tao Yong Hong , Bai Song , Chen Gang , Wang Ling , Huang Run Hua , Li Yun , Zhao Zhi Fei
Published: January 2015

1200V-15A 4H-SiC junction barrier schottky (JBS) diodes were designed and fabricated based on SiC epitaxy and device technology. By adopting the proper SBD metal,optimized structures and fabrication process, we succeeded in achieving good balance between blocking voltage and on-resistance, especially at high temperature to 200°C. Furthermore, the fabricated diode have a fast recovery time of 30ns, and its dynamic characteristics are constant at high temperature.
Research on the Package of High Voltage SiC JBS
Authors: Chen Gang , Li Ya Nan , Wang Lin , Liu Ao , Bai Song , Li Dong Hua , Zhang Qing Meng
Published: January 2015

According to the application of the high voltage SiC devices, studying the package of three kinds of SiC dies with different metals. Experiments show that all die wire bonding and shear strength measurement up to standard, and provide three kinds of packages for different applications, at the same time, filling the needs of producing. The purpose of the shear strength test is to determine the integrity of materials used to attach SiC die to package substrates.
RTDS-Based Modeling and Simulation for Control System of HVDC
Authors: Liu Mo Si , Qian Luo Jiang , Sun Zhi Yuan
Published: January 2015

To analyze response of control system for HVDC during steady-state operation and transient process accurately, an electromagnetic transient model of the actual control system is built based on the platform of RTDS. The rectifier side applies constant current regulator of variable gain, and pole power control/voltage dependent current order limiter. Under the condition of considering no-load DC voltage and nonlinear control design for firing angle, the combination of current regulator and alphamax inverter control is designed. At the same time, transformer tap control on both sides is constructed to match with control of firing angle, including some functions of regulating ideal no-load DC voltage, DC voltage and firing angle. By the analysis of various running conditions and dynamic process, the results show that the model can simulate the characteristics of Ud-Id for HVDC system.
The Analysis of Security Wedge Lock-Rope Mechanism by ANSYS Finite Element Analysis
Authors: Fu Kou Bao , Peng Fan
Published: January 2015

The performance of lock-rope mechanism affects the safe and efficient operation of mine hoisting system directly. The lock-rope mechanism with wedge angle 5° was designed by the mechanical analysis of wedge lock rope. Its entity model was established and the dynamic process of working is simulated by using the ANSYS/LS-DYNA. The results show that the wedge lock rope mechanism has the ability of self-locking. The strengthening institutions can largely eliminate the relative slip momentum between the lock-rope wedge-block and wire rope, which make the movement trend gentle, reduce the wear between the lock-rope wedge-block and wire rope and improve the security of wedge lock-rope mechanism effectively. The local equivalent stress of lock-rope wedge-block and wire rope are both present in the increasing distribution gradually from the upper to the lower.
Research of Electric Energy-Saving Evaluation Analysis in Colleges and Universities
Authors: Du Pei Dong , Han Yong Jun , Liu Fu Chao
Published: January 2015

Colleges and universities as the important structure of social organization, as well as the large energy structure consumption, it is necessary to analyze the energy consumption characteristics and factors, evaluate the energy-saving potential of college, realize the situation of the energy management system, and then, the energy used in college and economic burden can be reduced based on theory of improving energy management by strengthening energy control management. In this paper, the electrical energy potential saving of consumption in college has been analyzed and evaluated based on data envelopment analysis (DEA) model method. The LonWorks in fieldbus is used in technology field. Finally, the management measures and energy saving methods are proposed.
Research about the Layout of Canted Deck Based on Support Vector Machine
Authors: Yuan Jun Jia , Meng Zhi , Liao Quan Mi
Published: January 2015

To determine the angle and position in width direction of canted deck objectively, this paper analyzed the factors that influence the angled deck general arrangements. Principal component analysis was introduced to determine the essential factors which influence the general arrangement of canted deck. Based on several flight deck schemes of foreign mature aircraft carriers, support vector machine was introduced to regression and gain the characteristics of canted deck arrangement. The training result gained by support vector machine algorithm is more accurate than other regression methods. The regression for former Soviet Union Ulyanovsk aircraft carrier demonstrates that the accuracy and validity of this method is good.
Research on MUSIC Algorithm Based on Single-Antenna
Authors: Cui Gang , Su Shao Ying , Chen Zeng Ping
Published: January 2015

The Classical MUSIC algorithm points out that in order to distinguish N waves from different directions,an N element array is needed. Therefore, in order to distinguish multi-detect signal simultaneously, an array is needed ,the payload of satellite and reconnaissance aircraft platform is limited , large array antenna can’t be placed, and application of MUSIC algorithm is restricted on these platform. In this paper a MUSIC algorithm with single antenna is proposed using movement of single antenna, the resource-demanding disadvantage of classical is improved.This algorithm can be used on resource limit satellite and aircraft platform.This algorithm is verified efficacious in the paper by simulation.
A Distributed Interference Alignment Algorithm for Device-to-Device Communications with Multiple Antennas Underlaying Cellular Networks
Authors: Li Ning Fei , Shao Shi Xiang , Sun Jun
Published: January 2015

In this paper, we consider the device-to-device (D2D) communications with multiple antennas underlaying single-cell cellular networks, in which D2D transmission links reuse the cellular downlink (DL) resource. We propose an iterative distributed interference alignment (IA) algorithm to reduce the cellular interference towards D2D UEs, which utilizes the reciprocity of wireless networks with local channel knowledge at each node. The iteration algorithm continues until it converges, judged by the weighted leakage interference (WLI). Simulation results demonstrate that using the distributed interference alignment algorithm can effectively improve the system capacity and energy efficiency.
Research on the Tire Rope Lift-Off Process
Authors: Qiu Li Jun , Xu Su Ying
Published: January 2015

Tire crushing body is divided for the purpose of separating the wire. Wheels of Steel Shares will be made by a single, Stripping the wire and colloidal by roll extrusion. The tread belt layer composed of steel wire rope is made. Peel method using a roll extrusion method can not. It is after stripping tread peeling rope belt layer to peel. Tread was cut into strips at first, then stripped from steel tread belt layer surface,.With a layered approach to rope belt layer stripped from the carcass . You can use sliced ​​or milling method to release the rope. Sliced ​​on the rope can form a sheet body peeling. Milling peeling green tape layer is formed on the wire cutting and tearing. Dividing the body on the fixed milling peeling easier.
Fatigue Life Assessment of Steel Structures of a Metallurgy Crane
Authors: Xu Bin , Tang Xiao Ying , Jiang Yu , Gong Wen
Published: January 2015

A fatigue life assessment method of steel structures was proposed in this study and applied in a metallurgy crane. Analytical method and experimental analysis were adopted to evaluate the static strength of steel structures, and then dynamic stress test was applied to get the stress history in a whole working cycle, which could determine the interest point and stress spectrum. Finally, rainflow method was applied to approach the stress spectrum, and then the fatigue life was predicted based on Miner rules. The results indicated that this method showed a potential application in practical engineering.
Design of a Pulse Oximeter Based on STM32 Microcontroller
Authors: Wang Ying Zhi , Yang Jia , Han Tai Lin
Published: January 2015

It uses STM32F103C8T6 microcontroller as the core processor and AFE4400 integrated analog front-end as the signal conditioning section.OLED12864 displays the measurement results. Dedicated pulse oximeter analog front-end chip simplifies the system and improves the measurement accuracy.
An Improved Symbol Synchronization Method in OFDM Systems Based on Training Sequence
Authors: Ding Chen
Published: January 2015

Aim at the high request of symbol synchronization in OFDM systems and the defects of classical methods, an improved method is given, which designs the new structure of training sequence and selects better TDD-offset. Simulation results show that when this method is used, the timing metric curve has only one peak, the symbol synchronization is more accurate.
Rapid Ambiguity Resolution for Single Frequency Receiver
Authors: Yang Yong Guo , Xu Jun Tao
Published: January 2015

The algorithm of rapid ambiguity resolution for single frequency receivers is presented in this paper. Firstly, a sequential least square method is applied to decrease dimensions of the observation matrix of satellites. And then, the regularization method is applied to improve the accuracy of the float solution of ambiguities. Finally, the evolutionary method is applied to search the fixing solution of ambiguities. The experiment results show that the proposed method is fast and efficient for users to perform kinematical positioning and the difference between the positioning results of the proposed method and the results of GrafNav is in 2.5 cm.
A Semi-Blind Channel Estimation Method Based on Improved Particle Filtering for HF Channel
Authors: Zhang Shou Zhong
Published: January 2015

To further improve the performance of channel estimation by particle filtering, an improved particle filtering method was proposed. The HF channel has multipath、fading and time-varying characteristics, and using the dynamic channel prediction model and the phased semi-blind estimation by improved particle filtering can obtain the tracking performance for the time varying channel. Based on stratified resampling of particle filtering, a criterion is set during the particle choosing process to ensure the valid of the chosen particles. Simulation result shows the effectiveness of the proposed method.
UHV AC and DC Coordinated Operation Techniques Based on Continuous Simulation
Authors: Rao Yu Fei , Yu Lin Lin
Published: January 2015

In the process of China's ultra high-voltage (UHV) construction, Henan UHV power grid is the important part. Summer great load mode of Henan power gird is chosen as the typical method. In the background of completing Nanyang UHV extension project, based on single pole running and double pole running of Hami-Zhengzhou UHVDC project respectively, it is simulated and analyzed. The results indicate that power grid cannot maintain stability when single pole block fault or double pole block fault occurs. Through theoretical analysis and simulation, under UHV AC running certain limit, HVDC latching grid is stable. Under UHV DC running certain limit, HVDC latching grid is stable. Based on continuous simulation, this paper obtained the coordinated operation of area UHV AC and DC.
High Precision GPS Clock Synchronization Method Based on Time Different Compensation
Authors: Zhai Xue Ming , Yang Lei , Yang Liang
Published: January 2015

In order to solve the issues of time synchronization that occurs in simultaneous measurement in power system, designing a GPS clock synchronization method based on time different compensation which can guarantee high-precision whether the GPS satellites are locked or not. The paper provides the basic idea describe and the overall hardware and software design. Simulation results show that the scheme provides second pulse with error in 0.8μs when GPS is locked and provides second pulse with error in 7μs when GPS is unlocked for 12 hours. The accuracy is better than the existing references.
Bridge Crane Random Stress Spectrum Processed and Fatigue Life Analysis
Authors: Wang Ai Hong , Liu Ying Qi , Gao You Shan
Published: January 2015

This paper estimates the fatigue residual life of bridge crane with probability distribution model of stress spectrum, which influences the main parameters of the stress characteristics of the fatigue accounting point.Random sample of load spectrum parameters are produced by Latin hypercube.We can use the dynamic simulation model to calculate the stress-time history during the entire simulation at the accounting point of fatigue,and then with rainflow counting to obtain the double parameters stress spectrum. The result is that the bridge crane has 22630 lifting cycles and 37566 stress cycles in two years of an inspection cycle, and stress spectrum includes 10 stress amplitude and mean stress.
The Positive Integer Solutions of a Diophantine Equation
Authors: Wu Yi , Zhang Zheng Ping
Published: January 2015

In this paper, we studied the positive integer solutions of a typical Diophantine equation starting from two basic equations including a Diophantine equation and a Pell equation, and we will prove all the positive integer solutions of the typical Diophantine equation.
A Firepower Assignment Method for Barragging the JDAM
Authors: Zhang Qian , Ren Yuan Yuan
Published: January 2015

In this paper, the development of Joint Direct Attack Munition (JDAM) and the importance of firepower assignment are introduced, as well as the analysis on the bombing ways of JDAM. Consider the target threat level and comprehensive favorability about the targets distribution problem when taking barrage firing method to JDAM. It gets the optimal distribution of shooting based on example and data.
A New Classification Method Based on Similar Gravity
Authors: Liu Bin
Published: January 2015

The paper gives a pattern classification method based on gravity to binary classification problem. The linear classification boundary is computed by regression of some data, which are equilibrium of binary classes according to similar gravity defined in the paper. The method has advantages of computing simply and consuming less time. An example is given, and the result shows the effectiveness of the method.
A Novel Classification Method of Fish Based on Multi-Feature Fusion
Authors: Du Wei Dong , Chen Bao Wei , Li Hai Sen , Xu Chao
Published: January 2015

In order to solve fish classification problems based on acoustic scattering data, temporal centroid (TC) features and discrete cosine transform (DCT) coefficients features used to analyze acoustic scattering characteristics of fish from different aspects are extracted. The extracted features of fish are reduced in dimension and fused, and support vector machine (SVM) classifier is used to classify and identify the fishes. Three kinds of different fishes are selected as research objects in this paper, the correct identification rates are given based on temporal centroid features and discrete cosine transform coefficients features and fused features. The processing results of actual experimental data show that multi-feature fusion method can improve the identification rate at about 5% effectively.
A Predator-Prey Model Incorporating Prey Refuge and Allee Effect
Authors: Fan Rui Ning
Published: January 2015

The effect of refuge used by prey has a stabilizing impact on population dynamics and the effect of time delay has its destabilizing influences. Little attention has been paid to the combined effects of prey refuge and time delay on the dynamic consequences of the predator-prey interaction. Here, a predator-prey model with a class of functional responses was studied by using the analytical approach. The refuge is considered as protecting a constant proportion of prey and the discrete time delay is the gestation period. We evaluated both effects with regard to the local stability of the interior equilibrium point of the considered model. The results showed that the effect of prey refuge has stronger influences than that of time delay on the considered model when the time lag is smaller than the threshold. However, if the time lag is larger than the threshold, the effect of time delay has stronger influences than that of refuge used by prey.
A Stochastic Model with Saturation Infection for Internal HIV Dynamics
Authors: Wang Jin Qiang , Liu Mao Xing
Published: January 2015

In this paper, a stochastic model with a saturation infection rate representing HIV internal virus dynamics is investigated. We prove that the model exists non-negative solutions. Then we analyse the asymptotic behavior of the model. Finally, numerical simulations are presented to illustrate our mathematical findings.
A Study of the Designing Rhythm Annotation Rules and the Time Parameter Extraction for Tibetan Speech
Authors: Li Yong Hon , Sun Ting
Published: January 2015

Rhythm annotation is the basement of speech analysis and speech synthesis technology for Tibetan. Base on the study of Chinese rhythm, and Tibetan characters, this paper has studied the rhythm annotation for the speech synthesis technology of Tibetan, and has designed a set of rhythm annotation rules, which consists of Latin transliteration, tone type, syllable type, stress type, and break indices. Getting the annotative texts by Praat; then extracting prosodic parameters by Matlab, which is including the parameter designing, parameter extracting and results saving three parts.
An Improved Cloud Adaptive Genetic Algorithm Based on Cloud Computing for Active Optimization Calculation
Authors: Zhang Shao Min , Wu Ze , Wang Bao Yi
Published: January 2015

Under the background of huge amounts of data in large-scale power grid, the active power optimization calculation is easy to fall into local optimal solution, and meanwhile the calculation demands a higher processing speed. Aiming at these questions, the farmer fishing algorithm which is applied to solve the problem of optimal distribution of active load for coal-fired power units is used to improve the cloud adaptive genetic algorithm (CAGA) for speeding up the convergence phase of CAGA. The concept of cloud computing algorithm is introduced, and parallel design has been done through MapReduce graphs. This method speeds up the calculation and improves the effectiveness of the active load optimization allocation calculation.
Analysis of Sad Speech and Neutral-Sad Speech Conversion
Authors: Hou Ya Hui , Ma Xiao Yue , Yuan Rui , Xiao Zhong Zhe
Published: January 2015

A parameter mapping model to convert neutral speech to sad speech was proposed in this paper by comparison of statistical parameters between neutral and sad speech sample pairs with the same text content. In this model, we found sad speech with generally lower fundamental frequency than neutral speech, and the F0 contour is more stable than neutral speech; while the formants of sad speech is slightly higher than neutral speech. When concerning rhythm, the speed of sad speech is slightly slower than neutral speech. There exists significant difference between voiced segments and voiceless segments. Voiceless segments are significantly longer in sad speech. Speech conversion from neutral to sad was realized using this model, and got good results.
Application and Research on Distributed Collaborative Filtering Recommendation Algorithm Based on Hadoop
Authors: Li Xiu Juan , Yang He Biao
Published: January 2015

Coupled with exponential expansion of the data, efficient computing of existing recommendation algorithm has become an important issue, and the traditional collaborative filtering recommendation algorithm also exist the problem of sparsity. Based on the detailed analysis, the article introduce Hadoop platform into improved collaborative filtering recommendation algorithm, the improved collaborative filtering recommendation algorithm solve the problem of data sparsity, MapReduce parallel computing of recommendation also solve the promble of computational efficiency. In the experiments, the comparative analysis between Hadoop platform implementation and the previous implementation draws the conclusion that the Hadoop platform improves collaborative filtering recommendation algorithm computation efficiently under conditions of large data sets.
Application of Comprehensive Evaluation and Sensitive Analysis in Certain Equipment
Authors: Xie Ning , Li Shuai , Li Di , Wang Xiao Fei
Published: January 2015

In this paper,it is mainly based on the characteristics of index of some equipment, analyses the correspondence between first class index and second class index, studies the calculation of weigh index. Several methods including linear weighted method, Comprehensive fuzzy evaluation method, and the fuzzy Borda method have been taken into account to improve the confirmable methods of judgment matrix in the Analytic Hierarchy Process (AHP). The analyses of three different eqiupment,A system,B system and C system, demonstrates that A system is the best unanimously.