bluuebunny/crossref_metadata_2025_split huggingface dataset:
Protocolo OAI-PMH e Sistemas Federados de Informação │ OAI-PMH protocol and Federated Information Systems
Authors: Martins Dalton Lopes , Ferreira Sueli Mara S. P. 
Published: March 2017

Resumo O movimento de Arquivos Abertos através do protocolo OAI-PMH tem facilitado a criação de federações de bibliotecas digitais que permitem ampla agregação de produção científica, criando condições para a construção de importantes bases de dados para pesquisa bibliométrica, cientométrica, análise de redes sociais e outros modos de análise. Como um meio privilegiado para avaliação e identificação de padrões de produção da informação em diferentes comunidades científicas, as bibliotecas digitais federadas podem ser utilizadas como fontes de dados para pesquisa científica. A construção dessas bases de dados envolve diversos passos iniciando pelo modo com que a informação deve ser estruturada pelas bibliotecas locais, a forma como deve ser compartilhada em um ambiente de rede e sintetizada de modo a garantir visualizações integradas da informação. Questões relevantes sobre a qualidade dos metadados também são abordadas do ponto de vista metodológico e do modo como impactam as possibilidades de análise científica. Apresentamos neste artigo os fundamentos de como essa arquitetura de informação foi aplicada na construção do portal Univerciencia.org, com foco específico na produção científica da área da Ciências da Comunicação, bem como a tecnologia utilizada, as formas de estruturação e tratamento dos metadados, além dos primeiros resultados da análise de dados coletados e sua qualidade.Palavras-chave bibliotecas digitais, sistemas federados, OAI-PMH, repositórios abertos, cientometria, bibliometriaAbstract The Open Archives Initiative movement using the OAI-PMH protocol has allowed the production of federated digital libraries that provide wide aggregation of scientific production, creating conditions for the construction of important databases that enable the development of bibliometric research, scientometric, social network analysis and other modes of analysis. As a privileged means for evaluating and identifying patterns of information production in different scientific communities, federated digital libraries can be used as a source to study these communities. The construction of these databases involves several steps, beginning with the way information should be structured by local libraries, shared in a network environment and synthesized in order to ensure an integrated view of information. Relevant questions on the quality of such data directly impact on the possibilities of scientific analysis. We present here the foundations of how that information architecture has been implemented in the construction of the portal Univerciencia.org, which is focused on the scientific production of Communication Science, as well as the technologies involved, the ways of structuring metadata and the first results of analyzes of the data collected and their metadata quality.Keywords digital libraries, federated systems, OAI-PMH open repositories, scientometrics, bibliometrics
A Interdisciplinaridade e a Ciência da Informação: algumas reflexões│Interdisciplinarity and Information Science: some reflections
Authors: Santos Ana Paula Lima dos , Rodrigues Mara Eliane Fonseca 
Published: March 2017

Resumo Propõe-se a refletir sobre o fenômeno da interdisciplinaridade, com base nos estudos de Gusdorf (1967), Japiassu (1976), Fazenda (1993, 1995, 2009), Pombo (1994, 2003) e Nicolescu (1999). Investiga a gênese da interdisciplinaridade, explicitando as fases que compõem esse movimento. Em seguida, descreve algumas das concepções de interdisciplinaridade mais em uso, uma vez que são inúmeras as controvérsias em torno do significado do termo. Por último, discute os enfoques interpretativos dos teóricos da Ciência da Informação que a caracterizam como uma disciplina interdisciplinar.Palavras-Chave Interdisciplinaridade, Ciência da Informação, Pesquisa, Saber científico, Conhecimento.Abstract We aim to think over the phenomenon of interdisciplinarity, based on the studies of Gusdorf (1967), Japiassu (1976), Fazenda (1993, 1995, 2009), Pombo (1994, 2003) and Nicolescu (1999). We investigate the genesis of interdisciplinarity, explaining the phases that make up this movement. Then we describe some of the most used conceptions of interdisciplinarity, since there are numerous controversies around the meaning of the term. After that, discusses the interpretative approaches of information science theorists that characterize it as an interdisciplinary discipline.Keywords Interdisciplinarity, Information Science, Research, Scientific knowledge, Knowledge.
Outlier(s) nos cálculos bibliométricos: primeiras aproximações │ Outlier(s) in bibliometric calculations: preliminary approach
Authors: Lima Luís Fernando Maia , Maroldi Alexandre Masson , Silva Dávilla Vieira Odízio da 
Published: March 2017

Resumo Este artigo objetiva ilustrar a análise de outlier(s) aplicada aos cálculos bibliométricos. O Outlier é uma observação, elevada ou reduzida, em relação ao conjunto de dados. São três as causas possíveis para ocorrência de outlier: registro errado, o outlier provir de outra população, ou a medição do outlier ser correta, mas representar um evento raro. Assim, o outlier pode potencialmente produzir impacto nas abordagens de estudos bibliométricos. É importante identificar o outlier para a condução de análises alternativas, com ou sem a presença do outlier.Palavras-chaves Outlier, Bibliometria, Estatística, Cientometria, Métrica científica. Abstract This article aims to illustrate the outlier analyses applied to bibliometrics analysis. Outlier is an observation that is unusually large or small relative to the data set. There are three possible causes to outlier: incorrect value; the outlier comes from another population, or that the measurement is correct, but represents a rare event. So, outlier can potentially have a deeper impact on the bibliometric study. It is important to identify outlier to at least to perform alternative analysis with or without the outlier.Keywords Outlier, Bibliometric, Statistic, Scientometric, Metrology of scientific communication.
Análise de cocitação de autores: um estudo teórico-metodológico dos indicadores de proximidade, aplicados ao GT7 da ANCIB │ Authors’ co-citation analysis: a theoretical- methodological study of proximity indicators applied to GT7 of ANCIB
Authors: Cabrini Grácio Maria Cláudia , Tannuri de Oliveira Ely Francina 
Published: March 2017

Resumo Este estudo, de natureza teórico-metodológica, objetiva analisar os indicadores de proximidade absolutos e relativos - Cosseno de Salton e Índice de Jaccard-, para análise de cocitação de autores, e comparar sua contribuição para o entendimento de um domínio. Metodologicamente, aprofunda os estudos teóricos que fundamentam a análise de cocitação de autores (ACA) e os indicadores de proximidade, passando aos estudos dos índices normalizados de Cosseno de Salton (CS) e Índice de Jaccard (IJ). Apresenta uma aplicação no GT7 da ANCIB, na área de Ciência da Informação, no período de 2007 a 2011.Palavras-chave Análise de citação, Análise de cocitação, Indicadores de proximidade, Cosseno de Salton, Índice de Jaccard. Abstract Of a theoretical-methodological nature, this research aims at analyzing the absolute and relative proximity indicators – Salton’s cosine and Jaccard’s index –, for authors’ co-citation analysis (ACA). It also aims at comparing the contribution of these three indicators to the understanding of a domain. Methodologically, it deepens the theoretical studies that motivate authors’ co-citation analysis (ACA) and the proximity indicators, and presents the studies of the normalized index of Salton’ cosine (SC) and Jaccard’s index (JI). It applies ACA to the GT7 of ANCIB, in the Information Science field, from 2007 to 2011.Keywords Citation analysis, Co-citation analysis, Proximity indicators, Salton’s cosine, Jaccard’s index.
Indicators of Groundwater Potential for Nitrate Transformation in a Reductive Environment
Authors: Perović Marija , Obradović Vesna , Kovačević Srđan , Mitrinović David , Živančev Nevena , Nenin Tanja 
Published: February 2017

ABSTRACT: Increasing nitrate concentration in many shallow aquifers has become a global environmental problem. In order to determine anoxic aquifer sensitivity to nitrate pollution and potential for nitrogen conservation, we have qualified potential nitrate transformation pathways, by conducting field tests, tracer study, physicochemical and microbiological analysis of the groundwater. Combination of in situ measuring and laboratory analysis of physicochemical properties and selected biological activity reactivity tests (BARTTM), has enabled estimation of different pathways of NO3− reduction. During five days of nitrate enrichment experiment there was no observed increase in NO3− concentration, nor any observed decrease of TN (total nitrogen) in the groundwater, while NH4+ production rates increased (with the peak concentrations of 4.97 mg N/L) on the first day of the experiment. We assume that inhibited respiratory denitrification and enhanced DNRA (dissimilatory reduction of nitrate to ammonium) may preserve available nitrogen in a bioavailable form of ammonium.
Nitrogen Removal in a Staged Anaerobic‐Aerobic Sludge Digestion System
Authors: Kim Jongmin , Novak John T. 
Published: February 2017

ABSTRACT: A mixture of primary and secondary municipal sludge was treated in the digestion system consisting of a first‐stage mesophilic anaerobic and a second‐stage aerobic digester. The study was to monitor solids and nitrogen removal efficiencies under different operational conditions in the aerobic digester.In the first phase, the aerobic digester was batch fed under continuous aeration. More solids and ammonia were removed as the aerobic retention time increased. About 90% or greater ammonia was removed at 3 days or longer aerobic retention times. However, higher oxidized nitrogen was measured at the longer aeration times.In the second phase, the aerobic digestion system was operated for 3 to 5 days while continuously fed with anaerobically digested sludge under different intermittent aeration times. About 90% ammonia removal and low effluent oxidized nitrogen were achieved at 40 minutes of aeration over a 60‐minute cycle at a 4‐day retention time.
Activated Sludge Production Parameters and Nutrient Content of Organic Sludge Components
Authors: Labelle Marc‐André , Dold Peter L. , Gadbois Alain , Déléris Stéphane , Comeau Yves 
Published: February 2017

ABSTRACT: An important part of biological treatment system design is quantifying the sludge production and the nutrient removal capacity. Influent wastewater COD fractionation, biomass growth and endogenous respiration directly impacts the composition of the mixed liquor solids in activated sludge systems. The objectives of this project were to determine the model kinetic and stoichiometric parameters associated with activated sludge production and the nutrient content (N and P) of unbiodegradable organic matter components. A complete sludge retention experiment was conducted over 70 days in a pilot‐scale membrane bioreactor fed with a real municipal wastewater, and operated with alternating growth and famine periods. Experimental results were simulated and compared using the default values from two well‐accepted model parameter sets. The General ASDM parameter set was found to better fit the experimental data than the Metcalf and Eddy parameter set, mainly to characterize endogenous respiration and the heterotrophic biomass concentration. An influent unbiodegradable organic particulate fraction (fXU,Inf) value of 0.16 g COD/g COD was determined by calibration of the accumulated sludge total COD, suspended solids and heterotrophic biomass concentrations. The nutrient content of the accumulated endogenous residue (XE) and influent unbiodegradable organic particulate (XU,Inf) components were calibrated to 0.030 and 0.100 g N/g COD and 0.035 and 0.008 g P/g COD, respectively. These values are in the range of those reported in the literature except for the high P content found in the endogenous residue, possibly due to the presence of coagulants added for P removal in the accumulated sludge. These results were consistent under the wide range of dynamic conditions tested and could improve model prediction of sludge production and composition.
Seasonal Variation of Eutrophication in Some Lakes of Danube Delta Biosphere Reserve
Authors: Török Liliana , Török Zsolt , Carstea Elfrida M. , Savastru Dan 
Published: February 2017

ABSTRACT: To understand the trophic state of lakes, this study aims to determine the dynamics of phytoplankton assemblages and the main factors that influence their seasonal variation. Sampling campaigns were carried out in three lakes from the Danube Delta Biosphere Reserve. Spectral analysis of specific phytoplankton pigments was applied as a diagnostic marker to establish the distribution and composition of phytoplankton taxonomic groups. Fluorescence spectroscopy was used to quantify changes in dissolved organic matter (DOM). The relative contribution of the main phytoplankton groups to the total phytoplankton biomass and the trend of development during succession of the seasons showed that cyanobacteria could raise potential ecological or human health problems. Moreover, fluorescence spectroscopy revealed that Cryptophyta and cyanobacteria were the main contributors to the protein‐like components of DOM. It was concluded that fluorescence could be used to provide a qualitative evaluation of the eutrophication degree in Danube Delta lakes.
Effects of HRT and Loading Rate on Performance of Carriers‐Amended Anammox UASB Reactors
Authors: Chen Chongjun , Zhu Weijing , Huang Xiaoxiao , Zhang Tian C. , Wu Weixiang , Sun Faqian 
Published: February 2017

ABSTRACT: Effects of hydraulic retention time (HRT) and nitrogen loading rate (NLR) on performance of anammox UASBs amended with spherical plastic and bamboo charcoal carriers were investigated. During the experimental period, the performance of reactors was continuously evaluated by monitoring ammonium‐N, nitrite‐N, and nitrate‐N at HRT of 48, 36, 24, and 12 hours. With HRTs between 24 and 48 hours, the ammonium‐N and nitrite‐N removal efficiency was higher than 99%, while the total nitrogen (TN) removal efficiency was almost higher than 90%. When HRT decreased to 12 hours with NLR increasing to 0.16 kg N m−3 d−1, ammonium‐N, and TN removal efficiency decreased to 87 and 80%, respectively. Moreover, phylogenetic analysis revealed anammox community still existed at the HRT of 12 hours and was most closely related to C. Brocadia sp.40. In addition, different types of carriers had no significant influence on the anammox community.
Assessment and Ecological Risk of Heavy Metals in Sediment and Molluscs from the Mediterranean Coast
Authors: El Nemr Ahmed , El‐Said Ghada F. 
Published: February 2017

ABSTRACT: Heavy metal contamination in both sediments and molluscs from the Egyptian Mediterranean coast was investigated. Seawater, sediments, and mollusc samples were collected from representative locations along the coastal area. Different representations of the data set, including, statistical methods (correlation matrix and cluster analyses), various sediment quality assessment methods, and bioaccumulation factor calculation, were combined to investigate the trends of heavy metals, identify pollution sources, and assess sediment quality from a toxicological point of view. The measurements of dissolved oxygen (DO) revealed to relatively well oxygenate surface water in all locations. There is a distinct change in the contents of heavy metals (Fe, Al, Zn, Cu, Ni, Cr, Pb, Cd, and Hg) among the sampling sediments. The statistical interpretations showed that the bio‐availability of the studied heavy metals is controlled by different factors, including the geochemistry of sediments, the hydrology of the system, the uptake of metals from sediments, as well as human anthropogenic activities. Although, there are still certain points of the Egyptian Mediterranean coast with a relatively high concentration of toxic metals, the toxicological approach suggests that the risk for living organisms is not high, but, in the long run, toxicological implications can appear. These results can provide useful information for the local managers and decision makers.
Selecting Sustainability Indicators for Small to Medium Sized Urban Water Systems Using Fuzzy‐ELECTRE
Authors: Chhipi‐Shrestha Gyan , Hewage Kasun , Sadiq Rehan 
Published: February 2017

ABSTRACT: Urban water systems (UWSs) are challenged by the sustainability perspective. Certain limitations of the sustainability of centralized UWSs and decentralized household level wastewater treatments can be overcome by managing UWSs at an intermediate scale, referred to as small to medium sized UWSs (SMUWSs). SMUWSs are different from large UWSs, mainly in terms of smaller infrastructure, data limitation, smaller service area, and institutional limitations. Moreover, sustainability assessment systems to evaluate the sustainability of an entire UWS are very limited and confined only to large UWSs. This research addressed the gap and has developed a set of 38 applied sustainability performance indicators (SPIs) by using fuzzy‐Elimination and Choice Translating Reality (ELECTRE) I outranking method to assess the sustainability of SMUWSs. The developed set of SPIs can be applied to existing and new SMUWSs and also provides a flexibility to include additional SPIs in the future based on the same selection criteria.
Ultrasonic Destruction of Acid Orange 7: Effect of Humic Acid, Surfactants and Complex Matrices
Authors: Hamdaoui Oualid , Merouani Slimane 
Published: February 2017

ABSTRACT: The ultrasonic degradation at 600 kHz of an azo dye, acid orange 7 (AO7), in the presence of various dissolved natural organic matters (humic acid and surfactants) and in environmentally relevant matrices (natural water and seawater) was investigated. Additionally, the dependence of AO7 degradation on several operating parameters was clarified. The obtained results showed that ultrasound completely destroyed AO7 in 90 min of treatment but only 10% of TOC was removed after a long irradiation time. Investigations using the radical scavengers tert‐butyl alcohol and KI revealed that AO7 degradation proceeds through radical reactions occurring at the bubble–liquid interface. AO7 conversion was strongly affected by the operating conditions. While the degradation of the dye was not affected by the presence of humic acid, it was impacted negatively by the presence of surfactants. Replacing deionized water by natural water and seawater as real environmental matrices did not affect the degradation of the dye.
Developing an Integrated Modeling Tool for River Water Quality Index Assessment
Authors: Lai Y.C. , Chien C.C. , Yang Z.H. , Surampalli Rao Y. , Kao C.M. 
Published: February 2017

ABSTRACT: The goal of this study was to establish a modeling tool for river water quality with a direct linkage to the water quality index (WQI5) calculation and the river water quality model, the Water Quality Analysis Simulation Program (WASP), for pollutant transport modeling. The integrated WASP and WQI5 tool was field‐tested to assess pollutant loadings and their impacts on river environment. Suspended solid (SS) and electric conductivity (EC) correlation equations and the WQI5 calculation tool were included in the water quality model and direct WQI5 calculation. The SS concentration, which was influenced by river flows, had crucial effects on river water quality and WQI5 values. EC value was controlled by dissolution of soil minerals, which was affected by the watershed drainage area and surface runoff. The integrated system could establish a direct correlation for river water quality, river flow, and WQI5.
Effects of Reclaimed Water on the Characteristics of Dimethyl Phthalate Adsorption on Sediments
Authors: Ning Zigong , Li Pengxiang , Zhou Shuang , Li Yunkai , Ishiguro Munehide , Zhao Wei , Wang Meie 
Published: February 2017

ABSTRACT: Adsorptions of Dimethyl Phthalate (DMP) on three sediments in both reclaimed and ultrapure water were studied using the batch technique and the effects of reclaimed water on it were clarified. The data were interpreted by using Freundlich and Dubinin‐Radushkviech models. The values of 1/n were among 0.207 to 0.766, showing the presence of multiple adsorption sites on sediments. Compared with the ultrapure water as the background solution, the adsorption capacities of sediments for DMP were reduced in case of reclaimed water due to the competition of substances in reclaimed water. The mean adsorption energy, E, is smaller in the reclaimed water than that in ultrapure water.
A Simple Two‐Step Cloud Point Extraction Process for Removing Fluorescent Whitening Agents VBL in Industrial Wastewater and Recycling of Surfactant
Authors: Han Juan , Tang Xu , Wang Yun , Li Jing , Ni Liang , Wang Lei 
Published: February 2017

ABSTRACT: With the enhancement of people's environmental consciousness, the treatment of wastewater was studied as the focus of this paper. Here we present a simple two‐step extraction to realize efficient separation of fluorescent whitening agents VBL and cyclic utilization of surfactant to reduce the cost of wastewater treatment and environmental pollution. Firstly, the removal of VBL has been achieved by CPE using TX‐114 as nonionic surfactant. The results showed that complete extraction was possible using 1% (w/w) TX‐114 for VBL concentration not exceeding 17.5 mg/L, otherwise using a higher concentration of 1.5% (w/w) TX‐114. Then the surfactant from the coacervate phase was recycled by changing the potential difference between phases. The morphology of micelles and solubilization mechanism of VBL were demonstrated through the observation of a fluorescent microscope. This method was successfully used to remove the VBL from wastewater sample and the surfactant could be reused several times.
Efektivitas Unit Produksi sebagai Sumber Belajar Kewirausahaan di SMK Kota Yogyakarta
Authors: Yuliansah Yuliansah , Rasyid Aliyah A. 
Published: February 2017

The objective of this study was to determine how production units can be used effectively as an entreprenuership learning resource to increase the entrepreneurial learning motivation, to clarify the content of the entrepreneurial learning materials and to provide direct experiences for the Vocational High Schools students in Yogyakarta. This study is survey research with quantitative approach. The population of this study were 1.995 students of grade XI and grade XII at 17 Vocational High School in Yogyakarta. 333 students were selected as the sample. Questionnaires and documentation were used for collecting the data. The data was analysed through quantitative descriptive analysis using the Microsoft Excel software. The result of this study indicated that: (1) Production units were effective to increase the intrinsic entrepreneurial learning motivation of the students (2) Production units were ineffective to increase the extrinsic entrepreneurial learning motivation of the students (3) Production units were ineffective to clarify the entrepreneurial learning materials (4) Production units were ineffective to provide direct experiences for the students.