bluuebunny/crossref_metadata_2025 huggingface dataset:
Digital Library and Its Requirements in the Global World
Authors: Saini Surbhi
Published: December 2014

This chapter introduces the basics of the digital library, including needs, benefits, and requirements, and briefly describes the digitization process. The role of library and information science professionals has now become a debatable one due to the advent of digital libraries and the Internet. The cloud computing and virtualization in digital culture is also discussed here. In this regard, the chapter covers cloud computing, including the characteristics, types, and how it works. The application of cloud computing in libraries is described with an example of the cloud in the academic library in Orissa. The advantages and disadvantages of cloud computing in libraries or in organizations are also covered here. The future prospects of the digital library using cloud computing technology is like an innovative application in libraries.
Using Obstacles for Systematically Modeling, Analysing, and Mitigating Risks in Cloud Adoption
Authors: Zardari Shehnila , Faniyi Funmilade , Bahsoon Rami
Published: December 2014

In this chapter, the authors motivate the need for a systematic approach to cloud adoption from the risk perspective. The enormous potential of cloud computing for improved and cost-effective service delivery for commercial and academic purposes has generated unprecedented interest in its adoption. However, a potential cloud user faces numerous risks regarding service requirements, cost implications of failure, and uncertainty about cloud providers' ability to meet service level agreements. Hence, the authors consider two perspectives of a case study to identify risks associated with cloud adoption. They propose a risk management framework based on the principle of GORE (Goal-Oriented Requirements Engineering). In this approach, they liken risks to obstacles encountered while realising cloud user goals, therefore proposing cloud-specific obstacle resolution tactics for mitigating identified risks. The proposed framework shows benefits by providing a principled engineering approach to cloud adoption and empowering stakeholders with tactics for resolving risks when adopting the cloud.
Organizational Control Related to Cloud
Authors: Kumar Sathish A.
Published: December 2014

Cloud computing is touted as the next big thing in the Information Technology (IT) industry, which is going to impact the businesses of any size. Yet, the security issue continues to pose a big threat. Lack of transparency in the infrastructure and platforms causes distrust among users, and the users are reluctant to store information on the cloud. This undermines the potential of cloud computing and has proved to be a big barrier in the realization of the potential of cloud computing and its widespread adoption. The big paradigm shifts in the technology has not been reflected on the methods used to secure the technology. When an organization builds the infrastructure for cloud computing, security and privacy controls should be kept in mind from the holistic security perspective. It is also critical that the organization monitor and adapt controls to determine the success of cloud computing in dealing with the security and reliability issues relating to the cloud. From an organizational control perspective, the authors suggest an independent governing body to mediate between the cloud provider and the user, with the control framework that they have developed to fulfill their responsibilities of protecting the cloud environment.
Planning and Implementation of Cloud Computing in NIT's in India
Authors: Deshpande Ravikant M. , Patle Bharati V , Bhoskar Ranjana D.
Published: December 2014

Cloud computing and Information Network both are emerging facets in the field of Information Science (IS). Cloud computing has potential to bring another wave of changes to organizations. Overall, planning and implementation of cloud computing will be beneficial in the terms of library level as well as institutional level to manage by cloud. In this chapter the authors present RECs/NITs resources to move on for managing cloud computing. Making the decision to use cloud-based services means balancing the elements of cost, risk, and benefit to decide whether those services advance the mission of the library as well as institute. RECs/NITs Libraries can take advantage of the cloud in numerous ways, such as data sharing including discovery tools, current status of research, and software as service which depends on the cloud, e-mail systems and social networking, and so forth. This chapter recommends a road for globalizing Regional Engineering Colleges/National Institutes Technology libraries.
Organizational and Management Aspects of Cloud Computing Application in Scientific Research
Authors: Čudanov Mladen , Krivokapić Jovan
Published: December 2014

This chapter is focused on the business model of scientific research, theoretically analysing managerial, organizational, and financial, rather than technical aspects of this concept. Theoretic explanation is based on an organizational networking platform. In practice, this platform is presented by Seven Bridges Genomics software solution, and the new opportunities for the organizational network broker are illustrated both in theory and practice. The impact that cloud computing has upon organizational performances is theoretically explained by costs of the ICT infrastructure, as well as of transactional and opportunity costs of operations. Through cloud computing, approach opportunity costs are reduced and efficiency is increased. The business model is presented in the framework of Osterwalder and Pigneur. By means of theoretical analysis and practical example, the authors demonstrate the development of a business model related to scientific research in bioinformatics. Cloud computing enables organizational separation of two distinct parts of the scientific research business model: core research and IT support. From the perspective of efficiency, network achieves a higher level of capital utilisation, better resistance to business risks, lower transaction costs, and in general, better efficiency, while the core research part has the opportunity to focus its structure on effectiveness and creativity.
Performance Evaluation of Data Intensive Computing In the Cloud
Authors: Ahuja Sanjay P. , Kaza Bhagavathi
Published: December 2014

Big data is a topic of active research in the cloud community. With increasing demand for data storage in the cloud, study of data-intensive applications is becoming a primary focus. Data-intensive applications involve high CPU usage for processing large volumes of data on the scale of terabytes or petabytes. While some research exists for the performance effect of data intensive applications in the cloud, none of the research compares the Amazon Elastic Compute Cloud (Amazon EC2) and Google Compute Engine (GCE) clouds using multiple benchmarks. This study performs extensive research on the Amazon EC2 and GCE clouds using the TeraSort, MalStone and CreditStone benchmarks on Hadoop and Sector data layers. Data collected for the Amazon EC2 and GCE clouds measure performance as the number of nodes is varied. This study shows that GCE is more efficient for data-intensive applications compared to Amazon EC2.
A Forensic-as-a-Service Delivery Platform for Law Enforcement Agencies
Authors: Marturana Fabio , Tacconi Simone , Italiano Giuseppe F.
Published: December 2014

With the global diffusion of cybercrime, the ever-growing market penetration of high-performance and low-cost personal digital devices, and the commercial success of cloud computing, the area of digital forensics is faced with various new challenges that must be taken seriously. In this chapter, the authors describe a novel approach to digital investigations based on the emerging “Forensics as a Service” (FaaS) model. This model attempts to optimize Law Enforcement Agency's (LEA) forensic procedures, reduce complexity, and save operational costs. Inspired by previous work on distributed computing for forensic analysis, this chapter provides the reader with design guidelines of a FaaS platform for secure service delivery. The proposed FaaS platform should be able to support investigators and practitioners in their daily tasks (e.g. digital evidence examination, analysis, and reporting) once implemented by a cloud forensic provider or internally by a LEA. In this chapter, the authors also present the architecture components, interfaces, communication protocols, functional and non-functional requirements, as well as security specifications of the proposed framework in detail.
Integration of Web 2.0 Tools into Non-Formal Learning Practices
Authors: Kok Ayse
Published: December 2014

This qualitative study examines how a group of employee volunteers in IBM used Web 2.0 tools for their collaborative learning practice and what assumptions they had for using the tools. It presents multiple approaches to using the tools and lists multiple assumptions participants had for such a practice. This research explores how their use has been appropriated by employee volunteers for their practice of volunteering and how they influenced the process of their meaning-making. By doing so, it raised an awareness of the digital tools that provide collections of traits through which individuals can get involved in non-formal learning practices by having digital interactions with others. The study generates new qualitative evidence of using Web 2.0 for collaborative learning.
Research of Four-Zone Converter in Regenerative Braking Mode
Authors: Dzhaborov Mehrubon , Myatezh Sergey , Ivanov Vladlen
Published: December 2014

Algorithm of thyristor control for the single-phase four-zone converter with the ladder structure, functioning in regenerative mode was compiled; investigation of the proposed converter was conducted. The correctness of thyristor control algorithms was checked by means of a computer model in the medium MATLAB / Simulink.
Research of Mathematical Model for an Examinee Object at Test Bench Helicopter’s Transmission
Authors: Borodin A.M. , Pankratz Y.V. , Karacheva K.E.
Published: December 2014

– A mathematical model of kinematic scheme of helicopter’s tail transmission is created. Helicopter’s tail transmission is an object of testing with motor-driven and loading machine. The mathematical model of kinematic scheme will allow getting process regularities for all coordinates of the object-to-be-tested taking into account essential object’s elastic properties.
The Research of Energetic Characteristics of Induction Smelting Crucible Furnaces
Authors: Kislov A. , Talipov O. , Karmenov K. , Toraigirov S.
Published: December 2014

Induction smelting crucible furnaces have the advantage of optimal management of the process, regulation of the capacity and have high technical indices. The research of electrical and energetic correlation of induction smelting crucible furnaces is necessary in order to analyze the work and elucidate the optimal condition of exploitation, to work out the methods of projection and determine the optimal constructions of magnet wires. The authors worked out the methods of calculating the energy of electromagnetic field according to the sections of the space of the induction system, to the selection and installation of magnet wires in order to meet the technological requirements in the best way and to achieve high energetic and exploitation indices when building the induction crucible furnaces. The work represents the influence and interrelation of the inductor and the charge with the magnet wire depending on geometrical correlation of the induction system.
Direct Current Cascade Regulators Based on Resonance Structures with Switching Capacitors
Authors: Zotov L.G. , Gromtsev A.V. , Volkov A.G. , Mektiev A.D. , Tishininov Y.S.
Published: December 2014

The method for cascade design of direct current step-up regulators based on resonance structures with switching capacitors is considered. Such regulators provide high efficiency, and simplify regulator power circuit in autonomous systems for controlling direct current motor rotation velocity owing to decrease of the total number of semiconductor and reactive elements.
Research on the Metrological Characteristics and Voltage Transformer with Open Core Antiresonance Properties
Authors: Lebedev Vladimir D. , Yablokov Andrey A.
Published: December 2014

This work presents research results of open core high-voltage instrument transformers. The authors proposed different transformer constructions (designs) and implemented mathematical modeling on the basis of specially developed computer models carrying out field and circuit calculations simultaneously. According to the calculation results, the investigated voltage transformer amplitude and phase errors are defined. Also, research results of the investigated transformer antiresonance properties on the basis of symbolic models are given.
New Technology for Electromagnetic Levitation Melting of Metals
Authors: Spitans Sergejs , Baake Egbert , Jakovics Andris
Published: December 2014

In this paper a new drip-and leakage-free method for the electromagnetic levitation melting of metallic samples with greater weights, stabilized position and free surface shape is presented. The method can be used in a melting furnace, as well as for the coreless induction valves applied for the flow rate control, e.g. in the continuous casting of molten metals.The applicability of the method was examined numerically and experimentally proved by tests conducted with different types of laboratory setups.
Electron-Beam Cladding of Boron Carbide on Low-Alloyed Steel at the Air Atmosphere
Authors: Krivezhenko Dina S. , Laptev I.S. , Zimoglyadova T.A.
Published: December 2014

An investigation of coatings obtained by cladding of boron carbide on a low-alloyed steel substrate by an electron beam injected into the air atmosphere was carried out. It was shown that hardened layers had a heterogeneous structure formed during rapid cooling. It was established that a volume fraction of iron borides in the surface layer had a considerable impact on mechanical properties of the material studied.
Investigation of the Phase Composition of the Diffusion Zone in the Al-Ni-Cr Composite Material
Authors: Shmorgun Victor Georgievich , Taube A.O. , Krokhalev Aleksandr Vasilevich
Published: December 2014

This paper describes the investigation of the phase composition of the diffusion zone in the H20N80+AD1 composite material obtained by explosion welding, after heat treatment at 630оС, 75h. The isothermal section of the Al-Cr-Ni state diagram at room temperature is given. Microhardness of diffusion zone layers is measured.
Evaluating the Effectiveness of Axial and Isostatic Pressing Methods of Ceramic Granular Powder
Authors: Belousova Natalya , Veselov Sergey , Anufrienko Dmitriy , Goryainova Olga
Published: December 2014

The paper assesses the effectiveness of uniaxial and cold isostatic consolidation methods of medium size ceramic granular press-powders. The results of fractographic studies of raw compacts were obtained with different methods of forming. The estimation of the physical properties of raw compacts and sintered ceramic samples was done. The results of measurement of the bending strength of the ceramic material are shown. It has been established that the application of isostatic forming, compared with axial allows increasing the flexural strength of the ceramic material is more than 35% due to creating denser structure and enhancing adhesion between the granules under otherwise equal technological conditions
Research of Spraying, Ignite and Incineration ACLF in the Boiler with Cyclone Furnace Extansion
Authors: Boyko Ekaterina Evgenevna , Ovchinnikov Yuri Vitalevich
Published: December 2014

The results of experimental data spraying АCLF and their comparison with the calculated data are presented in the article. Flammability criterion of ACLF was calculated. Constructive and layout parameters of the cyclone furnace extension were obtained.
Two-Phase Filtration Model for Nonlinear Viscoplastic Oil and Hard Water Drive
Authors: Markelova Anastasia , Trifonov Artem , Olkhovskaya Valeria
Published: December 2014

The article offers a method to solve Buckley-Leverett’s problem, taking into account the nonlinear dependence of the filtration rate of viscoplastic oil on the pressure gradient. This method is based on the transformation of the fractional flow function by introducing in the theory of water drive the equations reflecting the rheological features of the oil flow. The resulting model allows us to quantify the influence of rheological factors on the completeness of the water-oil displacement and to calculate the performance, taking into account the component composition of the hydrocarbon phases. Taking the Samara Region oil fields as an example, the article shows that the quality of design is unsatisfactory when the bundled software being used does not take into account specific non-Newtonian properties of the high-viscosity oil.
Customer-Oriented Approach to Power Supply Reliability Ensuring
Authors: Vasilyeva Marina
Published: December 2014

In recent years, the problem of customer focus in power engineering is gaining more and more attention. The authors offer a mechanism for implementation of customer-oriented approach in power supply reliability ensuring. It is proposed to decompose power supply reliability into the system and address ones. Address reliability of power supply ensuring is presented in the form of the separate service provided on the basis of free bilateral contracts between the electric grid company and end users of the electric power. Customers are expected to determine reliability level according to the estimation of adequate indemnity in case of interruption or power limitation.
Assessment of Performance Factors of Hybrid Electric Vehicle Powertrain
Authors: Yaroslavtsev M.V. , Schurov N.I. , Belova E.A.
Published: December 2014

Buffer energy storage capacity and primary energy source power are considered to define the performance of a hybrid electric vehicle. Required buffer storage capacity depends on the vehicle’s driving cycle. The margin of hybrid bus buffer energy storage is estimated on the base of trolleybus driving cycle recordings. The dependence of buffer energy storage on primary energy source power has been determined. Combinations of buffer energy storage and primary energy source power corresponding to different degrees of hybridization are discussed. The described analysis sequence can be applied for designing a hybrid powertrain and adjusting it to specific working conditions.
The Use of Line Surge Arresters to Provide Safety of Live Working
Authors: Kazakova S.A.
Published: December 2014

Live working (LW) is performed to provide high reliability of transmission lines (TL). Only “bare hand” method of LW is used at voltage systems more than 200 kV. Live working (LW) is possible if the minimum approaching distances are in working place. This requirement provides the safety of LW excluding flashover of insulating gaps under the switching overvoltage impact. In some cases it is impossible to provide the required gaps in LW zone. In order to protect it against possible flashover, special arresters were designed. Their effect on overvoltage magnitude was checked in calculations.
Advanced Simulation of the Power Electronic Converters of VSC FACTS and HVDC in Hybrid Real Time Simulators of Power System
Authors: Borovikov Yuri S. , Gusev Alexandr S. , Ufa Ruslan A.
Published: December 2014

The present paper focuses on simulation of VSC (voltage source converter) based on FACTS (Flexible Alternating Current Transmission System) and HVDC (High Voltage Direct Current) transmission technologies. Particular attention is paid to hybrid real-time simulation approach which provides adequate and comprehensive modeling of electric power systems (EPS), containing FACTS and HVDC. The results of experimental research support the necessary level of adequate simulation of commutation processes and suitability of the presented concept and simulation tools for effective solution of research and development tasks of effective use of HVDC and FACTS devices in EPS.
Prospects for the Use of Portfolio Approach to Energy Companies
Authors: Rusina A.G. , Rusin G.L. , Gorevaya E.S.
Published: December 2014

This article describes a concept of refined assessment of direct investment portfolio attractiveness in power industry, especially relevant under the conditions of growing market instability. A methodological approach has been developed to investment projects portfolio construction, based on a mechanism of balancing risks within the portfolio. The relevance of simulation for investment portfolio planning is demonstrated. Also the authors formulate the issues and goals of investment efficiency criteria assessment and simulation, as well as power industry investment projects portfolio construction. Simulation model of project portfolio planning is offered, based on a Bass model of innovative product distribution with repeat sales. This model allows manipulating regulated market and production variables in order to form cash flow of high-risk projects in the power industry in a way that allows achieving an innovation projects portfolio with attractive profitability and acceptable risk.
Multi-Channel Controlled Object
Authors: Simakov Gennady , Filyushov Yuri , Skokova Irina
Published: December 2014

This paper describes a method for the synthesis of optimal control. The maximum principle is a simple way of creating the optimal management of multi-channel object. The optimality criterion is time.
The Operating Condition Estimation of the Equipment in Decision-Making Process in the Hydro Power Plant Control
Authors: Panova Yana , Derbenev Vladimir , Zhdanovich Anastasiya
Published: December 2014

This article is devoted to the principles of constructing the decision support information system at the hydroelectric power plants. It’s assumed that the fuzzy sets theory will be used for the representation of the information about the aggregates operating condition parameters. The paper reflects the advantages of such an approach. The calculations were done for the equipment of the low-head (Novosibirskaya HPP, Hydro Power Plant) and high-head (Sayano–Shushenskaya HPP) power plants. The results obtained are intended for solving the HPPs operational control problems.
Energy Saving in the Hot Water Supply Systems of Buildings
Authors: Khramshin Vadim , Karandaev Alexander , Radionov Andrey
Published: December 2014

The paper substantiates the use of the controlled electric drive of the circulating pumps in the hot-water supply systems of buildings. It considers the pump capacity control method as a function of the daily hot water consumption. The law of controlling motor speed with limitation of the minimum and maximum allowable water consumption has been proved. The schematic structure of the system controlling water consumption in the hot water supply circulation circuit is provided. Based on results of analysis of the daily water supply diagram both in case of controlled and uncontrolled consumption, the efficiency of the proposed method has been confirmed. Energy resource saving in the hot water supply system of the existing heating unit has been experimentally substantiated.
Bearing Fault Diagnostic of Induction Motor by Stator Currents Analysis Based on Park’s Vectors Approach
Authors: Safin Nail , Prakht Vladimir , Dmitrievskii Vladimir
Published: December 2014

This paper deals with the possibilities of bearing fault diagnosis of induction motors by stator currents analysis based on Park’s vector approach. The main theoretical aspects, the experimental results and their analysis are presented. It is shown that preventive stator current diagnostics of induction motors based on Park’s vector allows us early detection of bearing defects in the inner and outer races. The current spectra additional harmonics appearing in the case of bearing damage are found.
Percepção dos colaboradores sobre os padrões éticos em uma instituição de ensino superior
Authors: Dalazen Luciano Luiz , Silva Wesley Vieira , Del Corso Jansen Maia , Lemes Sandro Valdecir Deretti , Santos Daniel Ferreira
Published: December 2014

Esta pesquisa tem como objetivo avaliar a percepção dos colaboradores em termos de padrões de consciência ética numa Instituição de Ensino Superior vivenciados no cotidiano, pautando-se no modelo de Arruda e Navran (2000). Os procedimentos metodológicos utilizados neste trabalho são de natureza descritiva e de cunho quantitativo, cujo questionário utilizado foi caracterizado como estruturado, contendo 29 perguntas. Foram consultados 207 respondentes de um total de 1280 pessoas, que corresponde a 16,2% do universo pesquisado de nível hierárquico intermediário de uma instituição de ensino superior do Paraná. Os métodos de análise dos dados foram a estatística descritiva, análise fatorial e análise de regressão linear.  A estimativa para a análise de regressão linear mostra que as dimensões que mais impactam na variável dependente (percepção) são: chaves para o sucesso, consciência ética dos colaboradores, comunicação e negociação, cujos valores de probabilidade foram abaixo de 5% de significância estatística Como resultados, o estudo revela que o clima ético nesta organização encontra-se em estágio significativamente acima da média proposta no modelo de análise, e sugerem que empresas que atuem de maneira pró-ativa em programa de responsabilidade social tendem a experimentar níveis mais elevados de comprometimento dos seus empregados.
O campo de estudos sobre educação a distância: um estudo bibliométrico em periódicos nacionais
Authors: Souza Donizeti Leandro de , Ferrugini Lílian , Castro Cleber Carvalho de
Published: December 2014

Os estudos sobre Educação a Distância (EaD) têm crescido nos últimos anos, despertando a atenção de pesquisadores e gestores educacionais quanto às suas particularidades. Diante disso, surge a necessidade de diagnosticar por onde caminham os estudos brasileiros direcionados para essa temática, identificando as possíveis características e limitações para avanços teórico-metodológicos. Assim, o objetivo deste artigo é mapear o campo de estudos sobre Educação a Distância no Brasil, comparando-o com estudos internacionais. Para tanto, desenvolveu-se um estudo bibliométrico a partir de 51 artigos publicados entre os anos de 2008 a 2013 em 23 periódicos nacionais, além de um estudo bibliográfico realizado a partir dos 20 principais artigos internacionais identificados na base de dados Web of Knowledge. Os artigos foram investigados com base na análise de conteúdo, identificando as principais temáticas e metodologias utilizadas, assim como os principais autores e instituições com maior quantidade de publicações. Entre os principais resultados, constata-se que o campo de estudos brasileiro se caracteriza pelo grande interesse por aspectos pedagógicos e metodológicos da EaD, um predomínio de abordagens qualitativas e uma baixa interação entre instituições na rede de coautoria. Os resultados são válidos para um maior entendimento sobre as pesquisas envolvendo a temática “Educação a Distância no Brasil”, permitindo identificar as possíveis tendências e limitações desse campo de estudos.
A influência da cultura organizacional universitária sobre o processo de transferência tecnológica
Authors: Schreiber Dusan
Published: December 2014

O atual ritmo de desenvolvimento tecnológico obriga as empresas não apenas manter investimentos em inovação, como, também, aumentar continuamente o valor aplicado devido ao crescente custo de P&D. As instituições de ensino, por sua vez, detêm o conhecimento técnico, pessoal especializado e infra-estrutura laboratorial de alto nível, além do interesse em se aproximar das empresas, para disponibilizar os conhecimento gerados dentro de seus centros de pesquisa. Os governos, com o objetivo de fazer frente à globalização e garantir a sustentabilidade econômica das empresas nacionais, procuram, de várias formas, criar mecanismos para fomentar a consolidação do parque fabril local, com a geração de emprego e renda. Desta convergência de motivos, finalidades e necessidades dos três atores, empresas instituições de ensino e governo, surgiu a configuração de um novo modelo de desenvolvimento tecnológico denominado de "Hélice Tripla" onde os governos criam os fundos com recursos financeiros que são liberados para o desenvolvimento de projetos e inovações, condicionandos à sua aplicação em projetos executados em conjunto com as instituições de ensino/ pesquisa e empresas. A presente pesquisa tem por objetivo evidenciar o grau de influência da cultura organizacional de um grupo específico de profissionais, constituído de pesquisadores e docentes de uma universidade privada de grande porte, na região sul do país, no processo de transferência tencológica.
Atributos de qualidade dos serviços prestados por uma IES e os fatores que impactam na satisfação dos alunos do Curso de Graduação em Administração
Authors: Milan Gabriel Sperandio , Larentis Fabiano , Corso Anderson , Eberle Luciene , Lazzari Fernanda , De Toni Deonir
Published: December 2014

O presente trabalho apresenta um estudo sobre a identificação dos atributos e das dimensões (fatores) da qualidade dos serviços prestados por uma Instituição de Ensino Superior (IES) que impactam na satisfação dos alunos do curso de Administração. A operacionalização da pesquisa se deu, inicialmente, por meio de um estudo qualitativo de caráter exploratório, com aplicação de dezessete entrevistas individuais, com uma abordagem semi-estruturada, mediante a aplicação de um roteiro de questões. As entrevistas foram analisadas a partir de uma análise de conteúdo e geraram atributos (itens ou variáveis observáveis) intrínsecos à qualidade dos serviços prestados pela IES. Com base nos atributos identificados na pesquisa qualitativa, foi elaborado um questionário estruturado, o qual foi aplicado aos alunos do curso de graduação em Administração e resultou em 346 casos válidos. Por meio da análise fatorial, os atributos identificados foram agrupados em seis dimensões de análise ou fatores: corpo docente e currículo, imagem e reputação da IES, valor, limpeza das instalações, atendimento aos alunos e segurança. Além disso, por meio da regressão linear múltipla foi possível explicar 52% da satisfação geral dos alunos em função de quatro fatores.
On the origin of falling-tone chorus elements in Earth's inner magnetosphere
Authors: Breuillard H. , Agapitov O. , Artemyev A. , Krasnoselskikh V. , Le Contel O. , Cully C. M. , Angelopoulos V. , Zaliznyak Y. , Rolland G.
Published: December 2014

Abstract. Generation of extremely/very low frequency (ELF/VLF) chorus waves in Earth's inner magnetosphere has received increased attention recently because of their significance for radiation belt dynamics. Though past theoretical and numerical models have demonstrated how rising-tone chorus elements are produced, falling-tone chorus element generation has yet to be explained. Our new model proposes that weak-amplitude falling-tone chorus elements can be generated by magnetospheric reflection of rising-tone elements. Using ray tracing in a realistic plasma model of the inner magnetosphere, we demonstrate that rising-tone elements originating at the magnetic equator propagate to higher latitudes. Upon reflection there, they propagate to lower L-shells and turn into oblique falling tones of reduced power, frequency, and bandwidth relative to their progenitor rising tones. Our results are in good agreement with comprehensive statistical studies of such waves, notably using magnetic field measurements from THEMIS (Time History of Events and Macroscale Interactions during Substorms) spacecraft. Thus, we conclude that the proposed mechanism can be responsible for the generation of weak-amplitude falling-tone chorus emissions.
Uso da casquinha de milho para coelhos em crescimento
Authors: Vilas Boas Ribeiro Bruna Pontara , Machado Luiz Carlos , Geraldo Adriano , De Medeiros Alex Thaironi , Martins Marcelo Gaspary , Dos Santos Tiago Antônio
Published: December 2014

Para equilíbrio eficiente dos alimentos completos para coelhos é fundamental que se pesquise o valor nutricional dos ingredientes alternativos bem como a capacidade de substituição dos ingredientes tradicionais. Esse trabalho objetivou avaliar o efeito da substituição do feno de alfafa pela casquinha de milho (pericarpo), bem como determinar o valor nutricional deste subproduto agroindustrial para coelhos em crescimento. Para avaliação do desempenho produtivo, foram utilizados 30 animais da raça Nova Zelândia Branca, no período de 35 a 72 dias de idade, distribuídos em cinco tratamentos, sendo uma dieta referência, e quatro dietas com níveis crescentes de substituição do feno de alfafa pela casquinha (25, 50, 75 e 100%). Para determinação do valor nutricional realizou-se ensaio de digestibilidade, utilizando-se 18 coelhos da raça nova Zelândia branca, na qual receberam uma dieta referência e outra dieta teste, onde a casquinha substituiu 20% da ração referência, sendo determinados os valores de energia digestível (ED) e proteína digestível (PD). Não foram observadas diferenças significativas para o peso final, ganho de peso diário e consumo de ração. A conversão alimentar foi melhorada a partir da inclusão da casquinha, havendo efeito linear decrescente (P<0,01). O melhor valor para conversão alimentar foi observado no nível de 100% de inclusão de casquinha de milho. Verificou-se que a casquinha apresenta 1.832,9 kcal de ED/Kg e 2,32% de PD, sendo esses valores expressos em base de matéria seca. A casquinha de milho pode substituir o feno de alfafa nas rações para coelhos em crescimento.
MÉTODO PARA O ESTUDO DOS EFEITOS PRODUZIDOS POR HERBICIDAS HETEROAUXÍNICOS CLOROFENOXIACÉTICOS SOBRE OS MECANISMOS DA ABSORÇÃO INTESTINAL E DO TRANSPORTE ATIVO
Authors: MEDINA HEITOR S. G. , QUEIROZ VALTER S. , DE MESQUITA CÉLIA REGINA B.
Published: December 2014

Estudos de desastres ecológicos ocorridos nos rios Miranda e Betione (MS) e na baia de Guaraqueçaba (PR), causando grande mortandade de peixes, foram identificados como tendo sido causados por herbicidas heteroauxínicos diclorofenoxiacéticos. Foi desenvolvida, então, no presente trabalho, metodologia destinada a avaliar, no intestino delgado de vertebrados, particularmente de peixes e de mamíferos, as modificações que podem ocorrer nos mecanismos da absorção e do transporte ativo da alça intestinal funcionante submetida aos efeitos de herbicidas heteroauxínicos. Abstract Dichlorophenoxyacetic heteroauxinic herbicides were identified as the chemical agressors responsible for the 1986 environmental impacts at Miranda and Betione rivers (MS) and 1988 at Guaraqueçaba bay (PR). A special methodology has been then developed aiming to evaluate the effect of such chemical agressors on the mechanisms of absorption and active transport by the small intestine of vertebrates, mainly fish and mammals.
ASPECTOS ETIOLÓGICOS E EPIDEMIOLÓGICOS DO ABORTO EQÜINO
Authors: MOREIRA NEI , KRÜGER ERNESTO RENATO , WARTH JOSÉ FRANCISCO G. , BIESDORF SÔNIA MARIA , GOULARTE MARIELA M.M. , WEISS ROMILDO ROMUALDO
Published: December 2014

Para a investigação das causas de aborto eqüino na região de Curitiba, realizou-se a coleta e processamento do material de casos de aborto para bacteriologia, virologia e histologia; e um levantamento estatístico geral dos casos de aborto. Durante três anos, foram acompanhadas 674 gestações, das quais 9,2% resultaram em aborto. Com relação a abortos gemelares, verificou-se um índice de 4,5% em um total de 132 casos analisados. O material de 21 fetos foi processado com o intuito de isolar-se o Herpesvírus eqüino tipo 1, obtendo-se o isolamento em 4 casos (19,0%). Foram examinados para bacteriologia um total de 38 fetos, dos quais 44,7% foram considerados bacteriologicamente positivos. As bactérias isoladas com maior freqüência foram: Streptococcus spp., Klebsiella spp., Escherichia coli, Pseudomonas spp. e Staphylococcus spp.. Foram descritas as alterações encontradas no exame histológico da maioria dos casos de aborto de origem bacteriana e viral. Abstract This research was undertaken with the aim of establishing the main causes of equine abortion in the Curitiba area. It has been established that during the period of three years occurred a total of 9.2 per cent abortions among 674 gestations studied. From 50 aborted fetuses, different biological material was collected for bacteriology, virus and histopathology analysis. A total of 4.5 per cent of twin abortions were observed among 132 cases of abortions studied. The equine Herpesvirus type 1 has been successfully isolated from 4 cases, among 21 fetuses studied. On the other hand, 44.7 per cent from 38 fetuses studied were considered positive for bacteriological testing. The most frequent bacteria recovered were Streptococcus spp., Klebsiella spp., Escherichia coli, Pseudomonas spp. and Staphylococcus spp. The alterations found in the histological examination of the majority of bacteriological and virological abortion cases were desccribed.
PURIFICAÇÃO E ISOENZIMAS DA LACTATO DESIDROGENASE DO MÚSCULO EPAXIAL DE Prochilodus scropha e Notothenia neglecta
Authors: CARVALHO CLEONI SANTOS , ROSA RUBENS , SASSAKI KIKUE T. , BACILA METRY
Published: December 2014

Foi levado a efeito um estudo comparativo de purificação da lactico desidrogenase (L-lactato NAD+ oxidorreductase, E.C.1.1.1.27) do músuclo epaxial do peixe tropical Prochilodus scropha e do peixe antártico Notothenia neglecta. A purificação da LDH de ambas as fontes foi procedida por cromatografia de afinidade em oxamato-agarose, tendo revelado uma única banda de proteína em eletroforese em acetato de celulose, para ambas as preparações. Contudo, foi verificado que em eletroforese em tampão barbital pH 8,6, a LDH de P. scropha migra para o cátodo enquanto que a de N. neglecta migra para o ânodo. Abstract It has been carried out a comparative study on the purification of the lactate dehydrogenase (Llactate NAD+ oxidoreductase, E.C.1.1.1.27) from the epaxial muscle of the tropical fish Prochilodus scropha and the Antarctic fish Notothenia neglecta. Purification of LDH from both sources was carried out by oxamateagarose affinity chromatography. The eletrophorectic profile in cellulose acetate showed a single band in both preparations. However it has been observed that in barbital buffer pH 8.6, the LDH from P. scropha migrates towards the cathode while the LDH from N. neglecta, migrates towards the anode.
LINFLUENCE DE LALIMENTATION SUR LE DÉVELOPPEMENT DES GONADES ET ANALYSE MORPHOLOGIQUE DE LA MATURATION DU Hyphessobrycon callistus ET DU Trichogaster trichopterus (PISCES, TELEOSTEI)
Authors: TRIPPIA MARIA CECÍLIA BERNARDES PADILHA
Published: December 2014

Foi realizado estudo do comprimento total, peso total e peso das gônadas; dos índices gonadais; da distribuição do diâmetro ovocitário em ovócitos dissociados, assim como de seus maiores diâmetros por exemplar; e dos estádios de maturidade encontrados nos ovários e testículos, em relação à quantidade de alimento ofertado em três diferentes tratamentos de cada experimento, com Hyphessobrycon callistus e com Trichogaster trichopterus (Peixes, Teleostei). O comprimento total e o peso revelaram a tendência de serem diretamente proporcionais à quantidade de alimento ofertado em ambas as espécies, assim como o peso das gônadas em T. trichopterus. Em H. callistus o maior diâmetro ovocitário foi observado no tratamento de menor oferta alimentar, sendo que o maior diâmetro ovocitário de T. trichopterus refere-se ao tratamento de maior oferta alimentar. Em T. trichopterus as fases de desenvolvimento ovocitário encontradas e as escalas de maturidade de ovários e testículos propostas, foram semelhantes às observadas na literatura para outras espécies de Teleósteos dulceaqüícolas. Foi estimada a existência de desova múltipla em ambas as espécies. A maturação gonadal foi menos intensa no tratamento de menor oferta alimentar de T. trichopterus. Abstract Studies on the Hyphessobrycon callistus and Trichogaster trichopterus (Pisces, Teleostei) gonadal development in regard to nourishment were carried out. The following parameters were studied: the total length, total weight and gonads weight; the gonads indexes; the distribution of the oocytary diameter in oocytes dissociated and the maturity stages of ovaries and testicles. The total length and weight were estimated to be directly proportional to the amount of nourishment offered in both species, as well as the gonads weight of T.trichopterus. In H. callistus the largest oocytary diameter was observed in the treatment of the lowest level of nourishment offered, and the largest oocytary diameter of T. trichopterus was observed in the treatment of the highest level of nourishment offered. In T. trichopterus the development oocytary phases and the scales of ovaries and testicles maturity proposed were similar to the ones observed in the literature for other species of fresh water Teleosts. The existence of multiple spawning in both species was estimated. The gonadal maturation was less intense in the treatment of the lowest level of nourishment offered, in T. trichopterus.
ANÁLISE DA CURVA DE CRESCIMENTO DA CIRCUNFERÊNCIA ESCROTAL DE TOUROS DA RAÇA CANCHIM E DO GRUPO GENÉTICO MA
Authors: MARTÍN NIETO L. , SILVA L.O.C. , ROSA A.N. , GONDO A.
Published: December 2014

O objetivo deste trabalho foi ajustar diferentes curvas de crescimento para circunferência escrotal (CE) em função da idade, em touros da raça Canchim e do grupo genético MA mediante a utilização de modelos não lineares. Na análise foram empregadas 27.363 medidas da circunferência escrotal, provenientes de 5.520 touros da Raça Canchim e, 8.892 medidas de circunferência escrotal oriundas de 1.450 touros do grupo genético MA. Os resultados obtidos demonstram que o modelo Gompertz foi o que melhor descreveu o crescimento da CE nos touros da raça Canchim e o Logístico foi o mais adequado para descrever o crescimento da CE no grupo genético MA. O modelo Brody apresentou pouca utilidade no ajustamento da CE em função da idade. Growth curves of Scrotal circunference in Canchim and MA bulls Abstract The objective of this study was to adjust different growth curves of scrotal circumference (SC) by age. The data consisted of records on Canchim bulls and bulls of the MA genetic group wich were fit by no linear models. Were considered 27.363 measures on 5.520 Canchim bulls and 8.892 measures on 1.450 bulls of the MA genetic group. The results showed that the Gompertz model was the best to describe the growth of SC in the Canchim bulls and the Logistic model was the most appropriate to describe the growth of SC in the MA genetic group. The Brody model presented little usefulness in the adjustment of SC by age.
Documenting Diaspora: Multiperspectivity in Sandhya Suri's Auto/Biographical Film "I for India"
Authors: Linke Gabriele M.
Published: December 2014

Yash Pal Suri, a young Indian doctor, went to the UK in 1965 to complete his medical training. He equipped himself and his family back in India with a camera, tape recorder etc. so that they could film episodes of their lives and exchange 'cine-letters,' which they did for about 40 years. In 2005, Suri's daughter, Sandhya Suri, created a 70-minute documentary from her family's filmed stories and other sources, selecting and arranging the various scenes and voices recorded and combining them with clips from historical TV programmes as well as interviews and short scenes filmed between 2003 and 2005 in India and England. She re-constructs her transnational family's life story as embedded it in a complex set of factors and influences. Sandhya' documentary is, on various levels, both biographical (hers of her family, and family members talking about each other) and autobiographical (her presence in the film and family members talking about themselves), and these perspectives are deeply entangled. By emphasising her family's failed attempt to re-settle in India, she complicates the story of cultural integration. The result is a reconstruction of this diasporic life narrative from various angles and along the various axes of diasporic relations, especially those with home (India) and the host society, describing the position of the diasporic subject as in-between and continuously shifting. This article was submitted on June 1st, 2014 and published on November 2nd, 2014.
Am I Doing the Right Thing?
Authors: Ascari Maurizio
Published: December 2014

This article describes the genesis of Faded Letters, a novel that is rooted in real facts, notably, tracing the fate of Antonio Ascari, who was deported to Germany in 1944 as a forced labourer and died in Lublin in 1945, while fleeing from Germany with other Italian prisoners.
Communicative Identity in the Eighteenth Century; Johann Wilhelm Ludwig Gleim's Epistolary Network and the Cult of Friendship
Authors: Heinrich Tobias
Published: December 2014

In recent years the field of ‘life writing’ has been shaped by critical approaches that have abandoned traditional notions of the singular, self-governing individual in favor of a multiple and processual concept of the subject which understands the self as socially determined. A key role is played by an engagement with the technological and medial requirements – the material basis – of the subject’s construction. In contributing to this debate, this article looks at a configuration that, while it has numerous structural analogies to the present, is historically situated in the eighteenth century. Using the example of the epistolary network around the German Enlightenment figure Johann Wilhelm Ludwig Gleim (1719–1803), I will argue that at one of the decisive turning points in the formation of the modern concept of the subject there was a form of medial communication which stood at odds to the idea of a unified and autonomous self. Through the relationship created between author and addressee, the letter constructed changing versions of the self that made the success of communication dependent on the play between textual ambiguities and the imagination. At the same time the article examines the role of the visual image as a substitute for the other in epistolary communication. Under the guiding concept of ‘friendship’ a network of text and identity production occurring in parallel is formed. Such a network is not solely based on the principle of individual autonomy but also on collective recognition. This article was submitted on July 1st 2014 and published on December 5th 2014.
Love Plus Anarchy
Authors: Williams Heathcote
Published: December 2014

Here’s something to offend everyone – which should make us think about grounds of taking offence. In an invitation to self-reflect, Heathcote Williams' poems ask more of readers than usual: it’s part of what makes them so interesting for life writing.
Synthesis, Crystal Structures, and Thermal and Spectroscopic Properties of Thiocyanato Coordination Compounds with 3-Acetylpyridine as a Ligand
Authors: Werner Julia , Jeß Inke , Näther Christian
Published: December 2014

The reaction of transition metal thiocyanates with 3-acetylpyridine (3-Acpy) leads to the formation of compounds of compositions M(NCS)2(3-Acpy)4 (M1; M = Mn, Fe, Ni) and M(NCS)2(3- Acpy)2(H2O)2 (M2; M = Mn, Fe, Ni). Thermogravimetric investigations show that in the first step some of these compounds transform into the new coordination polymers M(NCS)2(3-Acpy)2 (M3 with M = Mn, Fe and Ni), that decompose into the new compounds M(NCS)2(3-Acpy) (M4 with M = Mn and Ni) in the second step. Unfortunately, the powder patterns of compounds M3 and M4 cannot be indexed, and there are strong indications that these compounds are contaminated with a small amount of the precursor or unknown crystalline phases. IR spectroscopic investigations indicate that in compounds M3 the metal cations are linked by μ-1,3-bridging thiocyanato anions into 1D or 2D coordination polymers that are further linked by the 3-Acpy ligands in compounds M4.