bluuebunny/crossref_metadata_2025 huggingface dataset:
FEATURES EXTRACTION METHOD FOR BRAIN-MACHINE COMMUNICATION BASED ON THE EMPIRICAL MODE DECOMPOSITION
Authors: Diez Pablo F. , Mut Vicente A. , Laciar Eric , Torres Abel , Perona Enrique M. Avila
Published: August 2013

A brain-machine interface (BMI) is a communication system that translates human brain activity into commands, and then these commands are conveyed to a machine or a computer. It is proposes a technique for features extraction from electroencephalographic (EEG) signals and afterward, their classification on different mental tasks. The empirical mode decomposition (EMD) is a method capable of processing non-stationary and nonlinear signals, as the EEG. The EMD was applied on EEG signals of seven subjects performing five mental tasks. Six features were computed, namely, root mean square (RMS), variance, Shannon entropy, Lempel–Ziv complexity value, and central and maximum frequencies. In order to reduce the dimensionality of the feature vector, the Wilks' lambda (WL) parameter was used for the selection of the most important variables. The classification of mental tasks was performed using linear discriminant analysis (LDA) and neural networks (NN). Using this method, the average classification over all subjects in database is 91 ± 5% and 87 ± 5% using LDA and NN, respectively. Bit rate was ranging from 0.24 bits/trial up to 0.84 bits/trial. The proposed method allows achieving higher performances in the classification of mental tasks than other traditional methods using the same database. This represents an improvement in the brain-machine communication system.
Genetic Algorithms Quality Assessment Implementing Intuitionistic Fuzzy Logic
Authors: Pencheva Tania , Angelova Maria , Atanassov Krassimir
Published: August 2013

Intuitionistic fuzzy logic has been implemented in this investigation aiming to derive intuitionistic fuzzy estimations of model parameters of yeast fed-batch cultivation. Considered here are standard simple and multi-population genetic algorithms as well as their modifications differ from each other in execution order of main genetic operators (selection, crossover, and mutation). All are applied for the purpose of parameter identification of S. cerevisiae fed-batch cultivation. Performances of the examined algorithms have been assessed before and after the application of a procedure for narrowing the range of model parameters variation. Behavior of standard simple genetic algorithm has been also examined for different values of proof as the most sensitive genetic algorithms parameter toward convergence time, namely, generation gap (GGAP). Results obtained after the intuitionistic fuzzy logic implementation for assessment of genetic algorithms performance have been compared. As a result, the most reliable algorithm/value of GGAP ensuring the fastest and the most valuable solution is distinguished.
Multi-Objective Generation Scheduling Using Genetic-Based Fuzzy Mathematical Programming Technique
Authors: Derghal Abdellah , Goléa Noureddine
Published: August 2013

This chapter presents a solution for multi-objective Optimal Power Flow (OPF) problem via a genetic fuzzy formulation algorithm (GA-FMOPF). The OPF problem is formulated as a multiple objective problem subject to physical constraints. The objectives and constraints are modelled as fuzzy mathematical programming problems involving the minimization of the objective function with fuzzy parameters and uncertainties in set of constraints. So the method is capable of representing practical situations in power system operation where the limits on specific variables are soft and the small violations of these limits may be tolerable. Then, genetic algorithm is used in order to seek a feasible optimal solution to the environmental/economic dispatch problem. Illustrative examples are given to clarify the proposed method developed in this manuscript and the performance of this solution approach is evaluated by comparing its results with that of their existing methods.
Investigating the Efficiency of GRASP for the SDST HFS with Controllable Processing Times and Assignable Due Dates
Authors: Ashrafi Maryam , Davoudpour Hamid , Abbassi Mohammad
Published: August 2013

This chapter deals with a hybrid flow shop scheduling problem involving sequence dependent setup times, commonly known as the SDST hybrid flow shop, and each stage (work centre) consists of parallel identical machines. In this problem, each job has a different release date and consists of ordered operations that must be processed on machines from different centers in the same order. In addition, the processing times of operations on some machine centers may vary between a minimum and a maximum value depending on the use of a continuously divisible resource. We consider a non-regular optimization criterion based on due dates which are not a priori given or fixed but can be assigned by a decision-maker. A due date assignment cost is also included into the objective function. Finally, the results obtained through the use of GRASP (Greedy Randomized Adaptive Search Procedure) are compared with those computed by SA (Simulated Annealing).
Three Scenarios in Microgrid to Solve Management Problem for Residential Application Using Genetic Algorithms
Authors: Mohamed Faisal A.
Published: August 2013

This chapter discusses online management of the MicroGrid components. A major challenge for all power utilities is not only to satisfy the consumer demand for power, but to do so at minimal cost and low emissions. Any given power system can be comprised of multiple generating units each of which has its own characteristic operating parameters. The operating cost and emission level of these generators usually correlate proportionally with their outputs, therefore the challenge for power utilities is to balance the total load among generators that are running as efficiently as possible. One of the important applications of the MicroGrid (MG) units is the utilization of small-modular residential or commercial units for onsite service. Genetic Algorithms (GA) optimization is well-suited to solve the environmental/economic problem of the MG. The proposed problem is first formulated as a nonlinear constrained optimization problem. Prior to the optimization, system model components from real industrial data are constructed. The model takes into consideration the operation and maintenance costs as well as the reduction in NOx, SO2, and CO2 emissions. The optimization is aimed at minimizing the cost function of the system while constraining it to meet the customer demand and safety of the system. The results ensure the efficiency of the proposed approach to satisfy the load and to reduce the cost and the emissions in one single run.
Online Adaptive Neuro-Fuzzy Based Full Car Suspension Control Strategy
Authors: Khan Laiq , Qamar Shahid
Published: August 2013

Suspension system of a vehicle is used to minimize the effect of different road disturbances for ride comfort and improvement of vehicle control. A passive suspension system responds only to the deflection of the strut. The main objective of this work is to design an efficient active suspension control for a full car model with 8-Degrees Of Freedom (DOF) using adaptive soft-computing technique. So, in this study, an Adaptive Neuro-Fuzzy based Sliding Mode Control (ANFSMC) strategy is used for full car active suspension control to improve the ride comfort and vehicle stability. The detailed mathematical model of ANFSMC has been developed and successfully applied to a full car model. The robustness of the presented ANFSMC has been proved on the basis of different performance indices. The analysis of MATLAB/SMULINK based simulation results reveals that the proposed ANFSMC has better ride comfort and vehicle handling as compared to Adaptive PID (APID), Adaptive Mamdani Fuzzy Logic (AMFL), passive, and semi-active suspension systems. The performance of the active suspension has been optimized in terms of displacement of seat, heave, pitch, and roll.
Construction of a Culture-Rich Database System for Indigenous Documentary Records
Authors: Lin Shu-Fen Hung , Chen Hsueh-Hua
Published: August 2013

The digitized collections and their associated metadata records are one of the most important electronic resources that require constant and ongoing management. Construction of an easy-to-use database system is a key and necessary part of this management effort. Due to the lack of a local classification scheme for a thematic collection, constructing a database system that is searchable by browsing through a layered knowledge map is challenging. In this chapter, the authors first summarize some useful theories and principles for constructing a user-friendly database system, then point out some database system goals, i.e., functions that are useful for such a database system. Finally, using the database system for video and photograph resources on Taiwan’s indigenous people as an example, they present the solutions for achieving the goals. The purpose of this case is to demonstrate how to construct an ideal database system for the electronic resources born from digitization projects.
Topaz Japanese-American Relocation Center Digital Collection
Authors: Lauridsen Lindsay
Published: August 2013

The Topaz Japanese-American Relocation Center Digital Collection was a digitization project carried out by the Digital Initiatives Department of Utah State University’s Merrill-Cazier Library. This case study provides a background on Utah State University, Merrill-Cazier Library, and Digital Initiatives. The mission, technology acquired, consortium involvement, and organization of Digital Initiatives are discussed. A description of the case provides an overview of the Topaz digitization project, which includes background on the Topaz collection, project assignments, technology components, technological issues, and organization considerations. The technological and organizational issues stemmed from the CONTENTdm software, image quality, standardized file naming format, and collaboration with Mountain West Digital Library, other institutions, and library departments within Merrill-Cazier Library. The current status of these issues and continued improvement of these issues are discussed.
Environmental Protection Agency
Authors: Snyder Amanda
Published: August 2013

The Environmental Protection Agency (EPA) provides access to information on a variety of topics related to the environment and strives to inform citizens of health risks. The EPA also has an extensive library network that consists of 26 libraries throughout the United States, which provide access to a plethora of information to EPA employees, scientists, and researchers. The EPA implemented a reorganization project to digitize their materials so they would be more accessible to a wider range of users, but this plan was drastically accelerated when the EPA was threatened with a budget cut. It chose to close and reduce the hours and services of some of their libraries. As a result, the agency was accused of denying users the “right to know” by making information unavailable, not providing an adequate strategic plan, and discarding vital materials. This case study explores the background of the digitization project, the practices implemented, and the critiques of the project.
Web 2.0
Authors: Byer Silvia Giovanardi
Published: August 2013

Web 2.0 technologies are changing the way we do things at home, in business, and of course, in teaching a world language. In addition to enhancing your understanding of how cloud-based technologies will strengthen your classroom activities, this article will also provide an example of how you can integrate two popular platforms to support communicative world language teaching activities.
Migration Path Towards Cloud-Aware Core Networks
Authors: Contreras Luis M. , López Víctor , González de Dios Óscar , Jiménez Felipe , Rodríguez Juan , Fernández-Palacios Juan Pedro
Published: August 2013

New services like Cloud Computing and Content Distribution Networks are changing telecom operator infrastructure. The creation of on-demand virtual machines or new services in the cloud reduces the utilization of resources among users but changes traditional static network provisioning. This chapter presents network architecture to deal with this new scenario called “Cloud-Aware Core Network.” A Cloud-Aware Core Network can request on-demand connectivity so the network is configured based on the changing demands. Secondly, the network has to dynamically control the network resources and to take into account cloud information in the network configuration process. The Cloud-Aware Core Network is based on an elastic data and control plane, which can interact with multiple network technologies and cloud services.
Current research, part D, eastern Canada and national and general programs
Authors:   Geological Survey of Canada
Published: August 2013

The Rendell-Jackman gold deposit is one of the most significant mesothermal vein-type gold deposits in the Canadian Appalachians. It is located within a deformed Ordovician metavolcanic dominated sequence containing felsic dykes. The first episode of deformation
is evidenced in the metavolcanics by an S 1 planar fabric containing a down dip stretching lineation. The second episode (Di) produced steeply plunging E-W folds, an S2 foliation and discrete brittle-ductile D2 high strain zones, affecting the metavolcanics and the felsic dykes. The se
brittle-ductile D2 high strain zones are particularly well developed in the hinges of F 2Jolds. They are also strongly controlled by the layer anisotropy induced by the felsic dykes which are competent compared to the incompetent metavolcanics. The gold bearing quartz veins are of shear vein type
and hosted within and sub-parallel to the D2 high strain zones. The fast deformation episode produced F3 sub-horizontal folds and Late NE and ENE brittle faults.
Glacial dispersal IM plume library, data entry reference manual
Authors: Fuss C , Lesemann J -E , Russell H A J
Published: August 2013

Much of Canada has been sampled for indicator minerals to support mineral exploration activities. The application of indicator mineral techniques for exploration in glaciated terrains accelerated through the 1980s and 1990s as the potential for diamond deposits
in the Canadian Shield attained broader appreciation and exploration success increased. Following the 1991 discovery of the Ekati deposit in the Lac de Gras area interest in indicator minerals increased enormously and there was an increased recognition of the need to better understand indicator
mineral distribution in glacial deposits. Subsequently there have been a number of notable publicly funded initiatives to support centralized indicator mineral databases (e.g. Kimberlite Indicator Diamond Database - KIDD). There has also been an increased interest in applying indicator mineral
techniques to the search for other commodities. Nevertheless, integration of the controls that glacial processes exert on indicator mineral dispersion remains poorly developed.
To address this issue the subproject on indicator minerals within the Target Geoscience Initiative 4 (TGI-4) is developing an Indicator Mineral Dispersal Atlas for selected regions and dispersal datasets in Canada. A preliminary activity has been to compile the published literature on indicator
minerals and develop a library (database) of reference material for integration with other geoscience datasets. This report documents the structure and workflow developed for data entry and export from this library that uses Microsoft Access, Google Earth, and ArcInfo.
Indicator mineral signatures of the Sisson W-Mo deposit, New Brunswick: Part 1 bedrock samples
Authors: McClenaghan M B , Parkhill M A , Averill S A , Kjarsgaard I M
Published: August 2013

As part of the Geological Survey of Canada's Targeted Geoscience Initiative 4 (TGI-4), till, stream sediment, and bedrock samples were collected around the Sisson W-Mo deposit in west-central New Brunswick to determine the indicator mineral signature that is
indicative of an intrusion-hosted W-Mo deposit. This open file describes the results for 12 bedrock samples from mineralization as well as host rocks around the deposit. These samples were examined as polished thin sections and <2.0 mm heavy mineral concentrates. In this study, the
indicator minerals that characterize the Sisson W-Mo deposit include: scheelite, wolframite, molybdenite, chalcopyrite, sphalerite, galena,
pyrite, and native bismuth.
Heavy mineral partitioning in sedimentary facies: Lac Baby Esker, Lac Timiskaming region, Canada
Authors: Lesemann J -E , Cummings D I , Kjarsgaard B A , Russell H A
J , Sharpe D R
Published: August 2013

Sampling protocols for heavy minerals (HM) and kimberlite indicator minerals (KIM) in glacifluvial sediments generally follows those established for sampling in fluvial environments. These protocols emphasize sampling of gravely facies. The transfer of this
protocol to glacifluvial sediments (especially eskers) assumes that fluvial and glacifluvial systems operate in similar manners. Though they share process similarities, they also have significant differences. Consequently the existing protocol used to sample eskers is largely untested and is not
constrained by understanding of glacifluvial processes. In the Lac Baby glacifluvial complex in the Lac Timiskaming region, various esker facies were sampled for KIM in order to assess how these minerals may be partitioned and concentrated in an eskerine depositional environment. The main finding of
this study is that gravely esker facies are not necessarily the prime sampling medium in an esker, and that medium to coarse sand facies may be a better choice. However, this does not mean that sampling gravely facies should be abandoned. It is suggested that examining the matrix characteristics of
coarser boulder beds is critical, as they may yield KIM. Near
Notre Dame du Nord, heavy mineral (HM) grain counts are elevated within an esker segment where a cobble-boulder bedform occurs. In this bedform, HM grain counts are only slightly lower than the highest HM concentration reported from Lac Baby. Many esker gravely facies record mass flow deposits and
poor sorting. These are poor sampling media for KIM due to a lack of density sorting. Nevertheless, other gravel facies have similar KIM concentrations to those reported in medium to coarse sand facies. Consequently, to select the optimum sample medium requires more than simple identification of
sedimentary facies, but also the identification of the depositional controls on the facies to optimize sampling strategies based on facies interpretations.
Till geochemical signatures of the Sisson W-Mo deposit, New Brunswick
Authors: McClenaghan M B , Parkhill M A , Seaman A A , Pronk A G , Pyne M , Rice J M , Hashmi S
Published: August 2013

A till composition study was carried out around the Sisson W-Mo deposit, one of the largest W deposits in the world, as part of the Geological Survey of Canadamp;gt;'s (GSC) Targeted Geoscience Initiative 4 (TGI-4), a collaborative federal geoscience program with
a mandate to provide industry with the next generation of geoscience knowledge and innovative techniques that will result in more effective targeting of buried mineral deposits. This till geochemical study is one of the first detailed studies around a major W deposit in glaciated terrain. The
<0.063 mm fraction of till clearly defines glacial dispersal at least 14 km down-ice of the deposit and this size fraction of till is recommended for W-Mo exploration in the region. Indicator elements for this type of W-Mo deposit include the ore elements W and Mo, and pathfinder elements
Sn, Bi, Cu, Zn, Pb, Ag, In, As, Cd, Zn, and Te. A total digestion method, such as the one used in this study (lithium meta/tetraborare fusion/ICP-MS), is required to report the total concentration of W and Sn in till and aqua regia is suitable for determining the other pathfinder elements. Glacial
dispersal of W and Mo from the Sisson deposit is detectable at a regional scale at least 14 km down-ice (southeast) using surface till sampling. A 2 km till sample spacing would be sufficient to detect the W dispersal train from a W-Mo deposit of this size.
Navigating laboratory services quality in challenging environments: A perspective for implementation in small, low-income countries and post-conflict settings
Authors: Kamau Edward M.
Published: August 2013

The need to establish and maintain good laboratory practices is recognised universally. However, due to differences in resources available for health services in different countries, allocation of financial and human resources in poor countries is severely constrained. The constraints faced by poor countries call for innovative approaches that would guarantee the minimum acceptable quality while striving to meet the highest standards. In resource-limited setting, it may be justifiable to develop and use ‘fit for purpose’ quality standards based on internationally-recognised laboratory quality management frameworks or protocols.
Analysis of Patterns of Gene Expression Variation within and between Ethnic Populations in Pediatric B-ALL
Authors: Hicks Chindo , Miele Lucio , Koganti Tejaswi , Young-Gaylor LaFarra , Rogers Deidre , Vijayakumar Vani , Megason Gail
Published: August 2013

B-Precursor acute lymphoblastic leukemia (B-ALL) is the most common childhood cancer. Although 80% of B-ALL patients are able to be cured, significant challenges persist. Significant disparities in clinical outcomes and mortality rates exist between racial/ ethnic populations. The objective of this study was to determine whether gene expression levels significantly differ between ethnic populations. We compared gene expression levels between four ethnic populations (Whites, Blacks, Hispanics, and Asians) in the United States. Additionally, we performed network and pathway analysis to identify gene networks and pathways. Gene expression data involved 198 samples distributed as follows: 126 Whites, 51 Hispanics, 13 Blacks, and 8 Asians. We identified 300 highly significantly ( P < 0.001) differentially expressed genes between the four ethnic populations. Among the identified genes included the genes PHF6, BRD3, CRLF2, and RNF135 which have been implicated in pediatric B-ALL. We identified key pathways implicated in B-ALL including the PDGF, PI3/AKT, ERBB2-ERBB3, and IL-15 signaling pathways.
Regular elements in CAT(0) groups
Authors: Caprace Pierre-Emmanuel , Zadnik Gašper
Published: August 2013

Let

X

be a locally compact geodesically complete

\mathrm{CAT}(0)

space and

\Gamma

be a discrete group acting properly and cocompactly on

X

. We show that

\Gamma

contains an element acting as a hyperbolic isometry on each indecomposable de Rham factor of

X

. It follows that if

X

is a product of

d

factors, then

\Gamma

contains

\mathbb{Z}^d

.
Spectral representations of vertex transitive graphs, Archimedean solids and finite Coxeter groups
Authors: Ivrissimtzis Ioannis , Peyerimhoff Norbert
Published: August 2013

In this article, we study eigenvalue functions of varying transition probability matrices on finite, vertex transitive graphs. We prove that the eigenvalue function of an eigenvalue of fixed higher multiplicity has a critical point if and only if the corresponding spectral representation is equilateral. We also show how the geometric realisation of a finite Coxeter group as a reflection group can be used to obtain an explicit orthogonal system of eigenfunctions. Combining both results, we describe the behaviour of the spectral representations of the second highest eigenvalue function under the change of the transition probabilities in the case of Archimedean solids.
Sofic measure entropy via finite partitions
Authors: Kerr David
Published: August 2013

We give a generator-free formulation of sofic measure entropy using finite partitions and establish a Kolmogorov–Sinai theorem. We also show how to compute the values for general Bernoulli actions in a concise way using the arguments of Bowen in the finite base case.
Measures for enhancing crossborder business – Results of an international empirical study
Authors: Semmelrock-Picej Maria Theresia
Published: August 2013

Especially in the transnational region Austria – Slovenia where differences in culture and language are predominant companies have to adapt their behaviour according to the cultural context. Understanding how to adapt to different business contexts is essential for success. Up to now there are no empirically consolidated findings on factors which positively or negatively affect crossborder business in this region. This paper tries to give insights and seeks to provide a systematic overview of the current situation of businesses in the region of Slovenia–Carinthia and which factors influence cross-border business most.
The Development of Integrated Public Passenger Transport in Slovenia with Special Emphasis on Pricing
Authors: Hočevar Marko , Novak Aleš
Published: August 2013

Within the EU, there exist deliberate attempts at the introduction of passenger-friendly integrated public passenger transport (PPT), which should solve many inconveniences that now hamper passengers in using the existing transportation system and should increase the PPT demand. The centerpiece of the integrated PPT system is the integrated ticket, which ideally also implies the integrated pricing (tariff) system. Due to the decline in PPT services in Slovenia the responsible Ministry launched a project aimed at the development of integrated PPT. A study was conducted as part of the project, focusing on the ticket pricing (tariff) model in relation to the existing customer structure. The model is largely based on the transport policy principle, rather than the cost principle, with the Austrian state of Styria as the selected comparable region. The paper also presents the introduction of very reasonably priced integrated monthly student ticket in Slovenia, which demonstrated the importance of substantial government subsidies leading to an increase in student ridership.
Problems of (Future) Financing the Local and Regional Economic Development
Authors: Veselinovic Drasko
Published: August 2013

We proved the main hypothesis of the paper that the methodology of banks’ capital measurement and banks’ capital structure is problematic. In the times of crisis causes many serious problems including financing of the future local, regional and global economic developments. We didn’t go here into quantitative correlation; however, qualitative outcome is very obvious. We proved this via the subordination problem. Basel II underestimated many risks that banks were disposed to in the bad times. Tier 2 (hybrids and subordinated debt) played too important role in the total banks’ capital. The private owners of Tier 2 and even some Tier 1 debt instruments were hit the most by the (banking) crisis; the official debt got more seniority. Current Euro-zone crisis has potential to cause additional markets’ volatilities and subordination crisis. Basel III will force banks to have more capital of the best quality. Existing and proposed capital accord system for banks with all details, pros and cons and detailed analysis with pointed out problems and implications on crisis and (future) regional and local economic development is the core of this paper. More Tier 1 will cause more stable conditions for banks financing local, regional and global (economic) developments.
Rede virtual de comunicação da informação na perspectiva do regime de informação
Authors: Leal Luiz Antonio Dias , Freire Isa , Souza Rosali Fernandez de
Published: August 2013

Apresenta os resultados de pesquisa que utiliza o conceito de ‘regime de informação’ de González de Gómez com o objetivo de identificar elementos e atores dentro do domínio de uma rede virtual de comunicação da informação. A pesquisa foi desenvolvida no âmbito do Programa Boas Práticas Agropecuárias – Bovinos de Corte da Empresa Brasileira de Pesquisa Agropecuária – EMBRAPA, que tem por finalidade tornar os sistemas de produção de bovinos de corte mais rentáveis e competitivos, assegurando a oferta de alimentos seguros, oriundos de sistemas de produção sustentáveis. A partir da identificação dos elementos do ‘regime de informação’, sugere-se a formação de uma micropolítica informacional para regulamentar a produção de conteúdo da rede virtual constituída pelos atores sociais, dispositivos, informação e ações de informação.
Um modelo estilizado da produção de serviços: aplicação empírica a uma amostra de bibliotecas no Rio de Janeiro 2000 – 2007
Authors: Carvalho Frederico A. de , Jorge Marcelino José , Jorge Marina Filgueiras , Russo Mariza , Sá Nysia Oliveira de
Published: August 2013

Embora reduzidas em número, as aplicações de modelos originados na área de Operações ao caso de bibliotecas estão registradas na literatura. Este trabalho adota uma visão estilizada em que a produção de serviços é representada como simples transformação de insumos em produtos, sem atentar para a especificidade dos processos produtivos envolvidos. O principal objetivo do trabalho é examinar empiricamente como essa transformação ocorre, focalizando como se comportam os elos entre insumos e produtos ao longo do período de análise. O exame empírico se apóia em dados coletados junto a uma amostra representando mais de 80% do universo das bibliotecas de uma IFES no Rio de Janeiro entre 2000 e 2007. Com auxílio da técnica multivariada da Correlação Canônica foi possível identificar associações significativas entre grupos de insumos e de produtos. Os resultados mostram que esses grupos se interligam a um nível de significância inferior a 5% e que a medida chamada de redundância cruzada quase sempre excedeu 50%, podendo ser considerada uma boa indicação de poder explicativo, uma vez que os dados se referem a cross sections anuais. Dentre os elos insumo-produto identificados como significativos, o efeito quantitativamente dominante reflete a combinação dos três insumos – a saber, pessoal, acervo e espaço – enquanto que a área ocupada aparece de novo, isoladamente, como segunda dimensão significativa.
Abordagem metodológica para o estudo comparativo entre as Bibliotecas digitais em Moçambique, Brasil e Paraguai
Authors: Moreiro González José Antonio , Melo Alves Fernanda , Guambe Martins Fernando
Published: August 2013

O presente artigo expõe resultados de uma tese de doutoramento em andamento sobre o impacto social das bibliotecas digitais, através de um estudo comparativo entre Brasil, Moçambique e Paraguai. Investigam-se os sistemas integrados das Bibliotecas das Universidades de São Paulo, Eduardo Mondlane e Nacional de Assunção, a través de indicadores qualitativos e quantitativos de avaliação do impacto das bibliotecas digitais. Aplicam-se os indicadores em questionários e entrevistas realizados aos usuários, estudantes, docentes, bibliotecários, pessoal auxiliar e responsáveis das unidades em estudo. Os resultados obtidos visam fomentar a criação de outras bibliotecas similares, diminuir a exclusão digital e contribuir de forma significativa para o desenvolvimento sustentável de cada país.
Inclusão social e suas abordagens na Ciência da Informação: análise da produção científica em periódicos da área de Ciência da Informação no período de 2001 a 2010
Authors: Almeida Alex Serrano , Gonçalves Renata Braz
Published: August 2013

Este estudo teve como objetivo verificar como a temática inclusão social tem sido abordada na área de Ciência da Informação, a partir da análise da produção científica publicada nos periódicos nacionais da área. Além disso, averiguar quais maneiras de inclusão mais abordadas na área da ciência da informação, mostrar as tendências de uso do conceito de inclusão social nos artigos científicos da área de Ciência da Informação, constatar como se apresenta o conceito de inclusão social relacionado ao profissional da informação e analisar se há relação com outras disciplinas. Foram feitas buscas em seis periódicos on-line da área de Ciência da Informação no período de 2001 a 2010. Utilizou-se como método de análise o referencial da análise de conteúdo de Bardin. Constituíram o corpus de análise 30 artigos que tratavam da temática inclusão social. Como resultados, identificou-se que a inclusão social, no que se refere às publicações da área de Ciência da Informação, em geral, está voltada a inclusão digital e ao uso das Tecnologias da Informação e Comunicação. Ademais, verificou-se, ainda, relações com o profissional da informação, em que este deve servir como mediador entre a informação e o usuário.
Arquitetura da Informação para quê e para quem?: uma reflexão a partir da prática em ambientes informacionais digitais
Authors: Silva Maria Amélia Teixeira da , Pinho Neto Júlio Afonso Sá de , Dias Guilherme Ataíde
Published: August 2013

O trabalho tem por objetivo refletir as práticas concernentes a Arquitetura da Informação e ao arquiteto da informação, em ambientes informacionais digitais, mais especificamente em websites. Pretende-se, pois pensar o modo pelo qual a informação é organizada, apresentada e percebida pelos usuários, e quais implicações resultam da mensuração, seleção e controle que se faz dela antes de disponibiliza-la nos websites. As abordagens giram em torno do excesso de informação e das implicações que norteiam os quatro sistemas que compõe a Arquitetura da Informação, sendo estes: o sistema de organização, sistema de navegação, sistema de rotulação e sistema de busca da informação.
Regime de informação para o mapeamento das competências em informação na educação superior
Authors: Serafim Lucas Almeida , De Araújo Freire Gustavo Henrique
Published: August 2013

Aplica a noção de regime de informação para o mapeamento das dimensões envolvidas no desenvolvimento de competências em informação na Educação Superior. Mediante pesquisa participante com docentes do curso de Agronomia, Universidade Federal do Ceará, Campus Cariri, identifica elementos do regime de informação local, com base em dados de percepção e desempenho dos pesquisados em competências em informação, entendidas com base no modelo “The SCONUL Seven Pillars of Information Literacy: Core Model For Higher Education”, da Society Of College, National And University Libraries (2011). Descreve a gestão da informação científica, identificando variáveis tácitas e tangíveis que influenciam as ações informadas dos professores pesquisados. Destaca os docentes, que, juntamente com os bibliotecários, possuem um papel primordial na multiplicação dos preceitos do movimento internacional pelas competências em informação. Conclui que o mapeamento do regime de informação local permitiu compreender os modos como docentes se capacitam (assim como as limitações) para agirem no dinâmico e atual fluxo de informação científica.
Liderança em gestão de projetos: um estudo bibliométrico e bibliográfico para compreensão do campo de estudo.
Authors: Palácios Sérgio Magalhães , Serra Fernando , Kniess Cláudia , Serra Bernardo
Published: August 2013

Este estudo tem como objetivo compreender o campo de estudo de liderança em projetos. Para promover esta compreensão coletou-se artigos científicos na base de dados Web of Science por meio das palavras-chave: leadership, project e project management. Foram levantados 65 artigos e depois de análise que teve como critério principal a relevância do artigo para liderança em projetos, definiu-se 39 artigos como relevantes para o tema. Estes 39 artigos foram agrupados por tema e analisados, o resultado desta análise identificou que no objeto de estudo os temas relacionados a liderança em projetos são: Competências de liderança versus Sucesso em PM (9 artigos), Liderança e equipes em PM (11 artigos), Aspectos motivacionais e emocionais em liderança em PM (3 artigos), Perfil, papel e desenvolvimento de liderança do Gerente de Projetos (12 artigos), Liderança e temas estratégicos em PM (4 artigos).Os dados mostram que existe uma tendência de aumento de publicações neste campo de estudo, no entanto, o estudo do campo amostrado por estes 39 artigos ainda não reflete a importância do tema para a prática. Dentre os temas analisados Liderança e temas estratégicos em PM se mostra como uma importante lacuna para estudos futuros.
Qualidade de Serviço: um estudo bibliométrico nas bases de dados internacionais
Authors: Castro Junior Deosir Flávio Lobo de , Silveira-Martins Elvis , Deluca Marcelo Augusto Menezes , Rossetto Carlos Ricardo
Published: August 2013

O objetivo deste artigo é servir de fonte de referências sobre Qualidade de Serviços para futuras pesquisas. Após levantamento nas bases de dados internacionais, EBSCO e ProQuest, é apresentando os resultados sobre o estado da arte deste assunto. O método utilizado foi a bibliometria, sendo investigados 132 artigos de um universo de 13.427. Os trabalhos analisados compreendem o período de 1985 a 2011. Dentre as contribuições, resultados e conclusões para futuras pesquisas são apresentadas: i) autores mais citados; ii) metodologia, dimensões e questionário mais utilizada; iii) publicações mais referenciadas; iv) journals internacionais com mais publicações sobre o tema; v) distribuição da quantidade de publicações por ano; vi) redes de autores; vii) rede de instituições de ensino; viii) termos utilizados na busca nas bases internacionais; ix) as relações estudadas nos 132 artigos; x) critérios para escolha da metodologia na pesquisa em qualidade de serviços; xi) paradigma mais utilizado; e xii) 160 referências de alto impacto.
A Implantação da TV Digital sob a Perspectiva da Gestão do Conhecimento
Authors: Pereira Ariane Rodrigues , Dalmau Marcos Baptista Lopez , Tosta Kelly Cristina Benetti Tonani , Moritz Gilberto de Oliveira
Published: August 2013

Este estudo busca identificar a condução da implantação da TV Digital (TVDI) sob a perspectiva da gestão do conhecimento pela Televisão Lages Ltda. São feitas verificações sobre planejamento da TV Digital, metas de conhecimento e processos essenciais estabelecidos e visa propor sugestões de melhoria. A revisão teórica contempla Stewart (1998), Sveiby (1998), Davenport (2006), Angeloni (2002), Nonaka e Takeuchi (1997) e Terra (2002), com destaque a Probst, Raub e Romhardt (2002). Corroboram para o desenvolvimento do presente estudo as pesquisas do tipo aplicada, descritiva e explicativa, sendo a coleta de dados realizada através de entrevistas. O tratamento dos dados deu-se por meio de análise qualitativa. Destaca-se que o trabalho está limitado apenas ao SBT/SC, conta com as percepções do presidente, dos gestores e de uma publicitária da equipe para a implantação da TV Digital. A pesquisa está temporalmente compreendida entre agosto e novembro de 2009 e limita-se ao escopo teórico adotado.
Modeling microphysical effects of entrainment in clouds observed during EUCAARI-IMPACT field campaign
Authors: Jarecka D. , Pawlowska H. , Grabowski W. W. , Wyszogrodzki A. A.
Published: August 2013

Abstract. This paper discusses aircraft observations and large-eddy simulation (LES) modeling of 15 May 2008, North Sea boundary-layer clouds from the EUCAARI-IMPACT field campaign. These clouds are advected from the northeast by the prevailing lower-tropospheric winds and featured stratocumulus-over-cumulus cloud formations. An almost-solid stratocumulus deck in the upper part of the relatively deep, weakly decoupled marine boundary layer overlays a field of small cumuli. The two cloud formations have distinct microphysical characteristics that are in general agreement with numerous past observations of strongly diluted shallow cumuli on one hand and solid marine stratocumulus on the other. Based on the available observations, a LES model setup is developed and applied in simulations using a novel LES model. The model features a double-moment warm-rain bulk microphysics scheme combined with a sophisticated subgrid-scale scheme allowing local prediction of the homogeneity of the subgrid-scale turbulent mixing. The homogeneity depends on the characteristic time scales for the droplet evaporation and for the turbulent homogenization. In the model, these scales are derived locally based on the subgrid-scale turbulent kinetic energy, spatial scale of cloudy filaments, mean cloud droplet radius, and humidity of the cloud-free air entrained into a cloud, all predicted by the LES model. The model reproduces contrasting macrophysical and microphysical characteristics of the cumulus and stratocumulus cloud layers. Simulated subgrid-scale turbulent mixing within the cumulus layer and near the stratocumulus top is on average quite inhomogeneous, but varies significantly depending on the local conditions.
Quantification of atmospheric visibility with dual digital cameras during daytime and nighttime
Authors: Du K. , Wang K. , Shi P. , Wang Y.
Published: August 2013

Abstract. A digital optical method "DOM-Vis" was developed to measure atmospheric visibility. In this method, two digital pictures were taken of the same target at two different distances along the same straight line. The pictures were analyzed to determine the optical contrasts between the target and its sky background and, subsequently, visibility is calculated. A light transfer scheme for DOM-Vis was delineated, based upon which algorithms were developed for both daytime and nighttime scenarios. A series of field tests were carried out under different weather and meteorological conditions to study the impacts of such operational parameters as exposure, optical zoom, distance between the two camera locations, and distance of the target. This method was validated by comparing the DOM-Vis results with those measured using a co-located Vaisala® visibility meter. The visibility under which this study was carried out ranged from 1 to 20 km. This digital-photography-based method possesses a number of advantages compared with traditional methods. Pre-calibration of the detector with a visibility meter is not required. In addition, the application of DOM-Vis is independent of several factors like the exact distance of the target and several camera setting parameters. These features make DOM-Vis more adaptive under a variety of field conditions.
Respiration of Mediterranean cold-water corals is not affected by ocean acidification as projected for the end of the century
Authors: Maier C. , Bils F. , Weinbauer M. G. , Watremez P. , Peck M. A. , Gattuso J.-P.
Published: August 2013

Abstract. The rise of CO2 has been identified as a major threat to life in the ocean. About one-third of the anthropogenic CO2 produced in the last 200 yr has been taken up by the ocean, leading to ocean acidification. Surface seawater pH is projected to decrease by about 0.4 units between the pre-industrial revolution and 2100. The branching cold-water corals Madrepora oculata and Lophelia pertusa are important, habitat-forming species in the deep Mediterranean Sea. Although previous research has investigated the abundance and distribution of these species, little is known regarding their ecophysiology and potential responses to global environmental change. A previous study indicated that the rate of calcification of these two species remained constant up to 1000 μatm CO2, a value that is at the upper end of changes projected to occur by 2100. We examined whether the ability to maintain calcification rates in the face of rising pCO2 affected the energetic requirements of these corals. Over the course of three months, rates of respiration were measured at a pCO2 ranging between 350 and 1100 μatm to distinguish between short-term response and longer-term acclimation. Respiration rates ranged from 0.074 to 0.266 μmol O2 (g skeletal dry weight)−1 h−1 and 0.095 to 0.725 μmol O2 (g skeletal dry weight)−1 h−1 for L. pertusa and M. oculata, respectively, and were independent of pCO2. Respiration increased with time likely due to regular feeding, which may have provided an increased energy supply to sustain coral metabolism. Future studies are needed to confirm whether the insensitivity of respiration to increasing pCO2 is a general feature of deep-sea corals in other regions.
Changing correlation structures of the Northern Hemisphere atmospheric circulation from 1000 to 2100 AD
Authors: Raible C. C. , Lehner F. , Gonzalez Rouco J. F. , Fernandez Donado L.
Published: August 2013

Abstract. Atmospheric circulation modes are important concepts to understand the variability of atmospheric dynamics. Assuming their spatial patterns to be fixed, such modes are often described by simple indices derived from rather short observational data sets. The increasing length of reanalysis products allows scrutinizing these concepts and assumptions. Here we investigate the stability of spatial patterns of Northern Hemisphere teleconnections by using the Twentieth Century Reanalysis as well as several control and transient millennium-scale simulations with coupled models. The observed and simulated centers of action of the two major teleconnection patterns, the North Atlantic Oscillation (NAO) and to some extent the Pacific North American (PNA), are not stable in time. The currently observed dipole pattern of the NAO with its center of action over Iceland and the Azores split into a North-South dipole pattern in the western Atlantic and a wave train pattern in the eastern part connecting the British Isles with West Greenland and the Eastern Mediterranean in the period 1940–1969 AD. The PNA centers of action over Canada are shifted southwards and over Florida into the Gulf of Mexico in the period 1915–1944 AD. The analysis further shows that shifts in the centers of action of either telconnection pattern are not related to changes in the external forcing applied in transient simulations of the last millennium. Such shifts in their centers of action are associated with changes in the relation of local precipitation and temperature to the overlying atmospheric mode. These findings further undermine the assumption of stationarity between local climate/proxy variability and large-scale dynamics inherent in proxy-based reconstructions of atmospheric modes and call for a more robust understanding of atmospheric variability on decadal time scales.
A simple lumped model to convert air temperature into surface water temperature in lakes
Authors: Piccolroaz S. , Toffolon M. , Majone B.
Published: August 2013

Abstract. Water temperature in lakes is governed by a complex heat budget, where the estimation of the single fluxes requires the use of several hydro-meteorological variables that are not generally available. In order to address this issue, we developed Air2Water, a simple physically based model to relate the temperature of the lake superficial layer (epilimnion) to air temperature only. The model has the form of an ordinary differential equation that accounts for the overall heat exchanges with the atmosphere and the deeper layer of the lake (hypolimnion) by means of simplified relationships, which contain a few parameters (from four to eight in the different proposed formulations) to be calibrated with the combined use of air and water temperature measurements. The calibration of the parameters in a given case study allows for one to estimate, in a synthetic way, the influence of the main processes controlling the lake thermal dynamics, and to recognize the atmospheric temperature as the main factor driving the evolution of the system. In fact, under certain hypotheses the air temperature variation implicitly contains proper information about the other major processes involved, and hence in our approach is considered as the only input variable of the model. In particular, the model is suitable to be applied over long timescales (from monthly to interannual), and can be easily used to predict the response of a lake to climate change, since projected air temperatures are usually available by large-scale global circulation models. In this paper, the model is applied to Lake Superior (USA–Canada) considering a 27 yr record of measurements, among which 18 yr are used for calibration and the remaining 9 yr for model validation. The calibration of the model is obtained by using the generalized likelihood uncertainty estimation (GLUE) methodology, which also allows for a sensitivity analysis of the parameters. The results show remarkable agreement with measurements over the entire data period. The use of air temperature reconstructed by satellite imagery is also discussed.