bluuebunny/crossref_metadata_2025 huggingface dataset:
L’agentivité humaine : un moteur essentiel pour l’élaboration d’un environnement personnel d’apprentissage
Authors: Jézégou Annie
Published: May 2018

Aujourd’hui, la sémantique associée à l’expression «environnement personnel d’apprentissage » (EPA) relève principalement du langage courant, lui-même soutenu par des représentations éparses et évolutives. Elle est encore peu étayée au plan théorique, ouvrant ainsi la voie à de multiples interprétations et à des logiques diversifiées d’action. L’article présente les aspects essentiels d’un cadre théorique d’analyse et d’interprétation des EPA, contribuant ainsi à leur apporter une intelligibilité. Ce cadre théorique est ancré dans la théorie sociale cognitive de l’agentivité humaine. Au plan conceptuel, il articule les fondements de cette théorie aux résultats de travaux sur l’autodirection, la collaboration, les communautés d’apprentissage en ligne ainsi que sur la présence en elearning.
Symbolisme de l'espace public et identité sociale
Authors: Pol Enric , Valera Sergi
Published: May 2018

Dans cet article nous présentons quelques réflexions et conclusions sur ce que signifie l'expression «symbolisme d'un espace urbain», sur qui peut décider du type de signification et du rôle du symbolisme de l'espace urbain en relation à l'identité sociale. Et cela à partir du concept d'identité symbolique de l'espace urbain comme manière de générer et consolider des identités sociales urbaines en relation à l'environnement. En plus de ce que nous appelons «symbolisme à priori» et «symbolisme à posteriori» nous analyserons les sources de la signification symbolique, en tant qu'expression du pouvoir et construction sociale. Tout cela sur la base de quatre études empiriques réalisées dans différents quartiers de Barcelone.
EDUCATION AND GENDER-BASED DIFFERENCES IN EMPLOYEE MOTIVATION
Authors: HITKA Miloš , KOZUBÍKOVÁ Ľudmila , POTKÁNY Marek
Published: May 2018

The main purpose of this article is to show dependencies between education and gender based on selected motivation factors. In order to obtain relevant data, the questionnaire method was used. In the years 2013–2016, 26,416 respondents participated. Descriptive statistics was used for data processing; the relationship between two categorical variables was verified by the chi-quadrate test and Tukey’s HSD test. The results of the research proved the hypotheses; i.e. that there are significant differences in motivation factors among Slovak employees related to their gender and education. The most significant motivation factors included basic salary, job security and a good working team. The paper presents an original verifiable methodology that can be used in research of a similar focus in other European countries. The research results point to the potential of various alternatives for business managers responsible for preparing incentive motivation programmes related to the analysed factors.
THE TIMING OF INITIAL PUBLIC OFFERINGS – NON-NUMERICAL MODEL BASED ON QUALITATIVE TRENDS
Authors: MELUZÍN Tomáš , ZINECKER Marek , BALCERZAK Adam P. , DOUBRAVSKÝ Karel , PIETRZAK Michał B. , DOHNAL Mirko
Published: May 2018

The objective of this study is to develop a qualitative model supporting chief financial officers (CFOs) while considering the timing of initial public offerings (IPOs) under conditions of underdeveloped capital markets, where decision making is often made under information shortage. A lack of adequate statistical data in connection with turbulently changing environment suggests that additional research is needed to develop new IPO timing models based not only on statistical analyses. We used a qualitative research approach based on trends, which are increasing, constant or decreasing. Firstly, we identified key variables influencing IPO timing, which have sufficient support in the relevant IPO academic literature, e.g. GDP growth rates, level of compliance, stock market returns, etc. Next, a qualitative model working with 9 variables was developed. The result is represented by 19 scenarios and their qualitative solutions. The transitional graph represents all possible transitions among the 19 scenarios. The main message of the findings presented is what scenarios can occur and what actions might be implemented by CFOs in order to increase the chances of IPO success. We believe that our findings provide valuable implications for local issuers, investment bankers, stock exchanges and macroeconomic policy makers.
Isomeric and Isotopic Effects on the Electronic Spectrum of
–He: Consequences for Astronomical Observations of
Authors: Campbell E. K. , Maier J. P.
Published: May 2018

Laboratory measurements are reported that enable a more accurate determination of the characteristics of the near-infrared absorptions of

below 10 K. These data were obtained by photofragmentation of

complexes in a cryogenic trap. Asymmetry in the profiles of the observed 9577 and 9632 Å absorption bands of

is caused by the attachment of the weakly bound helium atom to hexagonal or pentagonal faces of

. The implication is that the FWHM of the bands in the electronic spectrum of

below 10 K is 1.4 Å. The effect of 13C isotopes on the

electronic spectrum is experimentally evaluated by measurement of

,

, and

. Data on the 9365 Å absorption band indicate a wavelength shift of about 0.3 Å between the former and latter. This result is consistent with models used to interpret the vibrational isotope effect in the Raman spectrum of neutral C60. The influence of 13C isotopes on the 9348, 9365, 9428, 9577, and 9632 Å diffuse interstellar bands is expected to be minor considering other broadening factors that affect astronomical observations. The presented data also provide more accurate relative intensities of the five interstellar bands attributed to

.
Chemical Evolution of Interstellar Methanol Ice Analogs upon Ultraviolet Irradiation: The Role of the Substrate
Authors: Ciaravella A. , Jiménez-Escobar A. , Cosentino G. , Cecchi-Pestellini C. , Peres G. , Candia R. , Collura A. , Barbera M. , Cicca G. Di , Varisco S. , Venezia A. M.
Published: May 2018

An important issue in the chemistry of interstellar ices is the role of dust materials. In this work, we study the effect of an amorphous water-rich magnesium silicate deposited onto ZnSe windows on the chemical evolution of ultraviolet-irradiated methanol ices. For comparison, we also irradiate similar ices deposited onto bare ZnSe windows. Silicates are produced at relatively low temperatures exploiting a sol–gel technique. The chemical composition of the synthesized material reflects the forsterite stoichiometry. Si–OH groups and magnesium carbonates are incorporated during the process. The results show that the substrate material does affect the chemical evolution of the ice. In particular, the CO2/CO ratio within the ice is larger for methanol ices deposited onto the silicate substrate as a result of concurrent effects: the photolysis of carbonates present in the adopted substrate as a source of CO2, CO, and carbon and oxygen atoms; reactions of water molecules and hydroxyl radicals released from the substrate with the CO formed in the ice by the photolysis of the methanol ice; and changes in the structure and energy of the silicate surface by ultraviolet irradiation, leading to more favorable conditions for chemical reactions or catalysis at the grain surface. The results of our experiments allow such chemical effects contributed by the various substrate material components to be disentangled.
Innovation in the government-run Continuing Vocational Education and Training programme for unemployed in Catalonia (Spain): challenges and opportunities
Authors: Mara Liviu Catalin
Published: May 2018

Purpose: This paper offers relevant insights from the activity of the network of Centres d’Innovació i Formació Ocupacional (CIFO), analyzing the development of innovation in a continuing education and training (CVET) programme for unemployed, in Catalonia (Spain). (Required field)Design/methodology/approach: This is a qualitative study, carried out using the communicative methodology approach and co-constructing knowledge with the heads of the centers. The data was collected through the realization of eight interviews with the heads of seven of the eight CIFO that compose the CIFO network in Catalonia plus the Coordinator of the network, who had been head of the other CIFO, and it consisted in identifying the barriers to innovation and the elements that help to overcome them within different dimensions of this programme, through the exclusionary and transfomative dimensions, specific to the communicative methodology. (Required field)Findings: Innovation at the CIFO has three main strands where we have identified many opportunities for the CIFO: methodological, pedagogical and technological. The methodological has to do with the actions derived from the ISO 9001 certification, which gives the centres the mission of continuous improvement and satisfying the needs of the people and enterprises in the territories they serve. Pedagogical innovation is related to the detection of the innovation and including it in the curriculum of the centre, organizing experimental training courses, using the project methodology, enhancing entrepreneurship, or introducing digital technologies in the classroom. Technological innovation is related to the use of the latest technologies and equipment in the market. (Required field)Social Implications: This study opens new venues for research in the area of VET, CVET and lifelong learning because of its implications in adjusting education and training to the requirements of the labor market and improving students’ employability and helping them develop or design their personal projects and professional trajectory. The processes described in this article could be transferred to other contexts and in all types of activiiesy or initiatives in lifelong learning.Originality/value: This study contributes to fill a gap in the scientific literature, because innovation in the area of continuing vocational and education training and even in lifelong learning is scarce. Another contribution of this article is the focus on innovation, which is one of the main priorities for the EU in the area of Education and Training, and aso in the US, because of its contribution to economic growth and competitivity.  (Required field)
Agricultural Production Status of Hevsel Gardens
Authors: Kızıl Süleyman , Üzen Neşe
Published: April 2018

Hevsel gardens date back to the foundation of the city of Diyarbakir and has an important role in feeding of local people. These gardens remind us of a rich past agricultural history that binds us to the future along with role of women in agriculture marketing of these products in local markets. This study reports land structure of Hevsel gardens, state of land use and heavy metals status of these soils, irrigation water used in agricultural production and some crops growing in the area. This study also evaluates socio economic conditions of farmers working in these gardens and determines some economic characteristics. The results obtained from this study, showed nominal amount of heavy metal contents in soil, water and plants that are below threat level for human consumption, however these analyses should be repeated regularly. It would be useful to promote cultivation of ornamental plants, seedlings/saplings production nurseries and building greenhouses in the area.
O papel da dimensão ambiental na ocupação do MATOPIBA
Authors: Garcia Junior Ruiz , Filho José Eustáquio Ribeiro Vieira
Published: May 2018

A demanda por recursos naturais acompanha o crescimento econômico. Na agricultura, a sua expansão é acompanhada pelo aumento de novas fronteiras. Diante da limitação de recursos naturais, o setor tem enfrentado novos desafios para o aumento da produção. A expansão produtiva no Brasil tem sido caracterizada pela incorporação dos cerrados nordestinos, região conhecida como MATOPIBA. Esse território está em latitudes mais elevadas e sujeito a um clima mais seco e árido. Neste contexto, o objetivo principal do estudo é identificar o papel das restrições ambientais na ocupação e na expansão da agricultura da região, justamente para sinalizar em que áreas os investimentos das políticas públicas devem se concentrar para mitigar os problemas e ampliar o potencial produtivo. A pesquisa é baseada em dados e informações de fontes secundárias. O tratamento dos dados foi realizado com o auxílio das geotecnologias. Os resultados indicam que a região apresenta um conjunto de restrições ambientais e institucionais para o desenvolvimento da agricultura.
Capitalisme vert: Les populations locales sur les marchés mondiaux
Authors: Ribeiro Magda dos Santos
Published: May 2018

Cet article vise à décrire et à réfléchir aux récents accords signés entre les peuples amazoniens et les grandes entreprises brésiliennes et transnationales. Pour cela, le texte s'appuie sur deux sources distinctes: a) les descriptions ethnographiques, documents et articles publiés par des chercheurs brésiliens, et b) le travail sur le terrain dans la communauté São Francisco do Iratapuru, située dans l'état d'Amapá, dans l'Amazonie brésilienne, avec ses habitants castanheiros, qui ont depuis plus de 10 ans des accords commerciaux avec la plus grande entreprise de cosmétiques au Brésil, Natura S/A. L'article met l'accent sur le fait qu'une telle relation ne peut pas être comprise par la seule critique de l'avancement du modèle capitaliste d'échange et d'exploitation, mais doit tenir compte d'autres aspects tout aussi importants. L'incorporation de l'altérité amazonienne et l'imaginaire de la durabilité deviennent des éléments essentiels dans la production de valeur pour le soi-disant capitalisme vert.
As regiões montanhosas e o planejamento de suas paisagens: proposta de zoneamento ambiental para a Mantiqueira meridional mineira
Authors: Neto Roberto Marques
Published: May 2018

No domínio tropical atlântico, é nas paisagens montanhosas onde ocorrem as mais intensas interpenetrações entre elementos zonais e azonais na definição de sua estrutura e funcionalidade, com geossistemas regionais que mesclam cinturões florestais sobre solos argilosos e bem desenvolvidos com campos rupestres e altimontanos sobre solos rasos e ricos em minerais primários que ocorrem em regiões geomorfológicas como a Serra da Mantiqueira. As montanhas tropicais do sudeste brasileiro apresentam, portanto, paisagens peculiares dotadas de aptidões específicas ao manejo, de modo que as propostas de planejamento ambiental em escala regional devem partir de um estudo integrado destas paisagens de maneira a levar em conta as especificidades dos geossistemas regionais. A partir de tais premissas, o presente estudo apresenta uma proposta de zoneamento ambiental para a porção mineira da Mantiqueira Meridional, estabelecida a partir de uma abordagem dialógica entre a concepção geossistêmica e a ecologia da paisagem.
O “sentido da colonização” na territorialização do capital no Médio São Francisco: um olhar sobre o processo em meados do Século XVIII
Authors: Kluck Erick Gabriel Jones
Published: May 2018

Este artigo propõe revisitar e discutir o processo inicial de formação territorial do Médio São Francisco, como posição dos pressupostos categoriais do capital em territorialização, não sem violência, e dado nos termos do sentido da colonização (PRADO JR., 1979 [1942]). Para tanto, nos voltamos ao levantamento bibliográfico sobre a ocupação sanfranciscana, incluindo uma importante referência histórica, pouco estudada, denominada “Roteiro do Maranhão à Goyaz pela capitania do Piauhy” (de autoria desconhecida, publicada na revista do Instituto Histórico e Geográfico) escrita em meados do século XVIII, a qual relacionamos os aspectos abordados na teoria moderna da colonização (MARX, 1988 [1867]) e às proposições de POLANYI (2000 [1944]) e KURZ (2014), em que se evidencia o papel do Estado como promotor-produto da territorialização dos pressupostos do capital. Primeiro, suprimindo os meios da “reprodução social” dos índios, depois, gestando a produção da subsistência, adequadas ao sentido da colonização: produção de ouro e mercadorias para a Metrópole. Processo pelo qual a forma social de mediação se colocou, generalizando as suas categorias fundamentais, dinheiro, trabalho e mercadoria. Estas, impostas violentamente, tornaram-se a forma social de ser das relações sob o capital.
Conflitos e contradições no município de Ferros: o mineroduto Manabi
Authors: Sperling Bruno von , Pereira Profa. Dra. Doralice
Published: May 2018

Com o movimento do governo brasileiro de re-primarização da economia e os interesses dos capitalistas, além do crescimento exponencial do preço do minério de ferro, a Bacia do Rio Santo Antônio, sub-bacia do Rio Doce, se tornou alvo de projetos da megamineração. Um destes projetos é o da empresa Manabi, que, desde 2012, pretende dali extrair minério na região e exportá-lo por um mineroduto, em um porto no litoral capixaba. O presente artigo analisa a condição de subordinação na qual o município de Ferros e algumas comunidades nele inseridas se encontram face à iminência do projeto da Manabi. Trabalhos de campo e análises de documentos mostraram que as relações sociais e hierárquicas tornam mais complexa a apropriação dos lugares. Para ilustrar, o trajeto do mineroduto negligencia outros usuários que não são detentores das terras e reproduz desigualdades locais mesmo que sua instalação ainda seja um rumor.
Conhecendo e construindo a saúde pelo ambiente: uma proposta de leitura participativa e territorializada em saúde ambiental
Authors: Canal Heloise , Verdum Roberto
Published: May 2018

No Brasil, ainda que incipiente, a aproximação entre Vigilância em Saúde Ambiental e Atenção Básica – SUS representa uma estratégia importante na busca pela integralidade da atenção à saúde. Essa aproximação toma como base organizativa o reconhecimento do ambiente e dos territórios a partir da dimensão local do cotidiano. O estudo objetivou elaborar e aplicar uma estratégia de leitura sobre a relação saúde e ambiente numa área específica do município de Porto Alegre/RS, de modo a possibilitar parcerias de ação com/entre trabalhadores da saúde. A leitura sobre a relação saúde e ambiente, assim proposta, integra as dimensões histórica, espacial e coletiva das situações, a partir de uma ideia de processo apoiado em mapeamentos, demonstrando assim o caráter dinâmico e sempre inacabado. O gesto cartográfico, assim, afirma-se como o principal instrumento técnico da proposta de leitura cuja representação alcança não só os elementos e as dinâmicas da natureza, mas também as de identidades, práticas e vivências humanas. A abordagem participativa da pesquisa-ação e da observação participante foi concebida como a principal estratégia para a execução do estudo. A proposta de leitura sobre a relação saúde e ambiente na área de estudo permitiu uma avaliação preliminar de situações específicas de interesse à saúde ambiental, ao mesmo tempo em que possibilitou questionamentos das próprias “instrumentalidades” da vigilância em saúde ambiental, ou seja, a discussão sobre as formas de organização dos processos de trabalho no âmbito territorial local e no contexto da atenção básica.
Globalização e integração territorial – o caso da região de Tefé no Amazonas
Authors: Queiroz Kristian Oliveira
Published: May 2018

O objetivo deste artigo é analisar a integração territorial na região de Tefé no Amazonas a partir da atuação dos agentes da globalização presentes na cidade de Tefé e sua região de influência. Em particular, estuda-se o desempenho dos serviços e finanças, que integram fragilmente a região de Tefé ao meio geográfico contemporâneo provocando uma integração relativizada. A metodologia deste estudo fundamentou-se na pesquisa bibliográfica, entrevistas e no trabalho de campo para o levantamento de dados primários e secundários assim como o uso de informações institucionais. Conclui-se que esta integração relativizada ocorre em razão da existência de uma rede de telecomunicações e serviços com infraestruturas limitadas que prejudicam a fluidez das relações e dos fluxos. Identificou-se fluxos virtuosos ao desenvolvimento regional e fluxos fragmentadores do território a partir da atuação de agentes da globalização nesta fração da região amazônica.
O rural agrícola na metrópole: o caso de Porto Alegre/RS
Authors: Kozenieski Éverton de Moraes , Medeiros Rosa Maria Vieira
Published: May 2018

Os espaços rurais vêm apresentando mudanças significativas nas últimas décadas no Brasil. Neles surgem novas características entre as quais pode-se destacar a extinção dos espaços destinados as práticas agrícolas em razão da expansão urbana e da reconfiguração dos usos do/no rural decorrente das novas funções e das atividades econômicas. O município de Porto Alegre (Brasil), no qual ocorreu intensa expansão urbana, foi palco de grandes transformações em seu território com significativa perda de suas características rurais, o que inclusive o colocou na condição de metrópole junto à rede urbana brasileira. Considerando este contexto caracterizado pela presença de conflitos provocados pela expansão urbana e a consequente extinção das práticas agrícolas, o presente artigo tem por objetivo analisar os principais elementos econômicos, políticos e culturais que contribuem para manutenção de espaços destinados à agricultura em grandes centros urbanos utilizando a visão dos agricultores do município de Porto Alegre/RS.
La mercatique transatlantique d’un végétal psychoactif : le guaraná entre remède et aliment (1840-1921)
Authors: Beaufort Bastien
Published: May 2018

Le guaraná (Paullinia cupana Humbodlt Bonpland Kunth var. sorbilis [Mart.] Ducke), est un végétal psychoactif considéré comme un dynamisant physique et intellectuel. Plante globale depuis la fin du 20ème siècle, elle est l’un des rares végétaux amazoniens à faire l’objet d’une industrie typiquement brésilienne. Au cours de cet article nous étudierons les filières marchandes transatlantiques du guaraná entre les premières diffusions de sa production à partir de 1840 et l’invention de la première boisson moderne à base de guaraná en 1921, au Brésil. Durant cette période, la plante fit l’objet d’un fort intérêt scientifique outre-Atlantique, notamment en France et en Allemagne, avec l’identification de sa molécule active, la guaranine. Une fois isolé cet alcaloïde fut largement distribué comme remède grâce au soutien de scientifiques et commerçants nombreux au sein du réseau des pharmacies européennes. Parallèlement au Brésil, la production et la consommation de la plante se métissèrent. Tout au long de ces allers et retours mercatiques entre le Brésil et la France, le guaraná passa du statut de remède à celui d’aliment.
Uma viagem pela Manaus-Porto Velho
Authors: Neto Thiago Oliveira
Published: May 2018

Este texto é o relato de uma viagem realizada pelo autor na rodovia Manaus-Porto Velho, BR-319, entre 26 de dezembro de 2016 até 01 de janeiro de 2017. Nele, são apontadas as particularidades da viagem e a organização espacial que os transportadores possuem para propiciar as viagens rodoviárias. A estrutura do texto constitui uma narrativa, elencando aspectos relevantes vivenciados, desde os empecilhos, os fluxos, até os pontos de apoio.
Transportes e circulação: Fixos, fluxos e dinâmicas econômicas no estado de Mato Grosso do Sul - Brasil
Authors: Pereira Ana Paula Camilo
Published: May 2018

Este projeto de pesquisa pretende analisar e identificar a dinâmica da fluidez por meio dos fixos no estado de Mato Grosso do Sul, seu papel na econômica brasileira, bem como sua relação com os países que fazem parte do Corredor Rodoviário Bioceânico, projetado de Campo Grande-MS a Porto Murtinho-MS, em direção aos portos do norte do Chile. Para isso, o objetivo desta proposta é verificar os sistemas de transportes que têm progressivamente incorporado as bases técnicas ao território sul-mato-grossense, considerando nessa perspectiva o conjunto indissociável de sistemas de engenharia (os fixos) e de sistemas de fluxos (materiais). No que tange aos modais de transportes, utiliza-se como base as principais modalidades de transporte viabilizadas na circulação de cargas e passageiros, tendo como análise o processo histórico de desenvolvimento desses modais e suas infraestruturas. Quanto aos fluxos, toma-se como base a movimentação de pessoas e cargas, como forma de compreender a organização espacial da circulação e suas relações adjacentes, em um contexto que busca compreender os resultados das políticas públicas de infraestrutura de transporte, tanto no âmbito federal como estadual. Em síntese, o presente projeto busca realizar uma sistematização da dinâmica econômica dos modais de transporte, reconhecendo-os como um dos aspectos mais importantes dentro da lógica do desenvolvimento econômico regional.
Cartografia ambiental: um mapa de síntese
Authors: Martinelli Marcello
Published: May 2018

Propõe-se tecer reflexões sobre a Cartografia Ambiental e expor um ensaio mediante um procedimento analógico e gráfico para se chegar ao mapa dos Tipos de Ambiente, um mapa de síntese. Palavras chave: Cartografia ambiental; Mapa de síntese; Procedimento matricial; Estado de São Paulo (BR).
Mineração no Roteiro da Missão Cruls: ressignificação da fronteira no Planalto Central do Brasil
Authors: Silva Adriano Gonçalves da , Souza Rita de Cássia Martins de
Published: May 2018

A mineração tem sido um agente de intensa transformação do território brasileiro desde o período colonial. O Roteiro da Missão Cruls constitui-se em região que tem papel fundamental para as estratégias estatais de integração do território nacional e de formação de fronteira desde, pelo menos, a Independência política em 1822. Neste trabalho, procura-se defender a área como uma região geoestratégica utilizada pelo Estado brasileiro, ainda que não com caráter administrativo, a fim de garantir a unidade territorial e, por corolário, a unidade do mercado interno. Atualmente, por conta das grandes mudanças impostas pelo processo de globalização, essa fronteira vem sendo ressignificada acompanhando a demanda do modo de produção hegemônico. Minerais estratégicos como o ouro, o cobre, o nióbio, o níquel e o zinco, através das novas tecnologias desenvolvidas, ganham destaque no cenário global para a fabricação de materiais indispensáveis usados na sociedade moderna. A relação entre o Estado e as transnacionais também sofre alterações na busca pelo controle dos mercados nacional e internacional diante das novas faces do capital. Este trabalho apresenta a importância da mineração no Roteiro da Missão Cruls para o Brasil, no qual a fronteira sofre constante ressignificação. Os minerais encontrados na região, encrustada no Planalto Central brasileiro, são analisados aqui do ponto de vista de sua importância estratégica para o Brasil no contexto internacional, com base em dados extraídos do IBRAM, DNPM, CPRM e MME.
Le clip vidéo et ses contextes : musiques populaires et postmodernité dans les années 1980
Authors: Straw Will
Published: April 2018

Les premières analyses journalistiques ou universitaires du phénomène des clips vidéo se souciaient des effets possibles de l’image sur la pureté ou l’authenticité de la musique. Lorsque ce format parvint au succès à la fin des années 1980, une vague plus exclusivement scientifique d’écrits s’en servit comme prisme pour interpréter le postmodernisme. Selon ces travaux, le postmoderne se caractérisait par le caractère fragmentaire et collagiste des textes culturels ; ils sacrifiaient la profondeur au profit d’un flux d’images ne fonctionnant qu’au niveau de la surface. Cet article soutient que, plutôt que d’avoir été simplement incorporés à la musique par le biais de logiques télévisuelles, les clips du début des années 1980 participèrent à un recentrement de la pop sur la chanson (au détriment de l’album), le transitoire (au détriment du travail durable et de la stabilité de l’auctorité) et des stratégies de citation (au détriment de l’expression de la personnalité auctoriale). De même, alors que les textes postmodernes étaient souvent conçus comme un mélange de fragments culturels remettant en cause les frontières entre formes culturelles, cet article défend l’idée que les premiers clips vidéo adoptèrent ces cadres, dans la mesure où la musique pop pouvait y trouver de nouvelles façons de s’ancrer dans une histoire des formes de divertissement.
Le clip comme forme d’expression musico-visuelle : pour une esthétique de la relation musique-images
Authors: Gaudin Antoine
Published: April 2018

Cet article propose une réflexion sur la spécificité expressive du vidéoclip musical. À partir de l’analyse de quatre clips, il déploie les enjeux liés à la « primauté » chronologique et compositionnelle de la musique sur les images à l’intérieur de ce secteur de création. Au-delà de sa contribution sur le plan épistémologique (comment pourrait-on approfondir l’approche esthétique de l’objet-clip ?), il vise ainsi une meilleure compréhension de l’expérience sensible et signifiante que les clips font vivre à leurs audio-spectateurs. Il encourage donc à ne pas analyser les clips seulement à l’aide des catégories mobilisées pour les autres formes audiovisuelles (cinéma, télévision, etc.), mais aussi et surtout à adopter une méthodologie d’ensemble respectueuse de leur singularité musico-visuelle.
Social Media in Tertiary Education
Authors: Simpson Ann M.
Published: May 2018

Social media use is prevalent throughout the world and is now commonplace in higher education. The devices, support technologies, and social media applications used in higher education are in a constant state of change. Using social media in education creates new and sometimes challenging issues for institutions, instructors, and students. This chapter attempts to address some of the considerations and potential issues that impact our use of social media in the higher education classroom. It examines social media as an educational tool in higher education, possible pedagogies for social media use, potential educational contexts, and privacy concerns raised by social media use in educational environments. This chapter also provides a possible definition for social media and introduces some themes that will be explored in further detail in the following chapters.
The Application of ICT in the Area of Value Co-Creation Mechanisms Support as a Determinant of Innovation Activities
Authors: Jelonek Dorota , Chomiak-Orsa Iwona
Published: May 2018

The application of creativity and innovativeness of clients in the processes of value co-creation thanks to the contemporary ICT technologies is possible on an ever-increasing scale. The first part of the article contains theoretical considerations about the value co-creation mechanisms and the innovation activity which can be initiated and fostered by using these mechanisms in organizations. Also, the authors also indicated main areas where the application of ICT can significantly influence initialization and gaining co-creation mechanisms. The second part – empirical part presents the exemplary co-creation tools used in selected type of knowledge organizations – tax consulting firms.
Evaluation of Quality of the e-Commerce Service
Authors: Ingaldi Manuela , Ulewicz Robert
Published: May 2018

E-commerce market continues to grow. It is so popular because more and more people are connected to the Internet. Nevertheless, not all online e-shops can be so proud of its conversion rates. The customers' satisfaction with the services of different types of e-shops are affected by many different factors. The authors can say that a satisfied customer is the one who maintains a good reputation of the sellers' despite of the disadvantages which he had to face, such as damage of product during its transport, the need to make a warranty repair. To evaluate the customers' satisfaction in the chosen e-shop, the authors decided to use two methods which according to them can be complementary in this case, these methods are following: the Servqual method and the Importance/Performance analysis (IPA). Then, advantages and disadvantages of e-commerce were described. Next, the research methods were characterized. Later, the survey and its results were shown. The research had the form of an online questionnaire. It was addressed to customers of the chosen e-shop. The Servqual method was used to evaluate the quality level of offered services in general and analyze the Servqual index (perceptions of the real services minus customers' expectations). The Importance/Performance analysis was used to indicate which areas of the service really need the intervention of the research e-shop.
Bottom-Up and Top-Down Approaches to Simulate Complex Social Phenomena
Authors: M'hamdi Ahmed , Nemiche Mohamed
Published: May 2018

Social science research is concerned with the study of processes and phenomena in human societies, institutions and organizations. Social phenomena are complex due to many non-linear interactions between their elements. Social simulation represents a new paradigm for understanding social complexity with approaches that use advanced computational capabilities. The success of social simulation is largely due to its capability to test and validate hypotheses of social phenomena by the construction of virtual laboratories. This paper provides an introduction to social simulation and discusses approaches to model complex social phenomena.
The Use of Wiki in Teaching Programming
Authors: Lin Yu-Tzu , Wu Cheng-Chih , Chiu Chiung-Fang
Published: May 2018

This article explores the feasibility of employing cooperative program editing tools in teaching programming. A quasi-experimental study was conducted, in which the experimental group co-edited the programs with peers using the wiki. The control group co-edited the programs with peers using only the face-to-face approach. The findings show that the co-editing platform was effective in assisting collaborative learning of programming, especially for program implementation. By observing editing histories, students could compare programs and then reflect more deeply about programming. The use of the wiki history tool also helped to illuminate nonlinear and dynamic procedures utilized in programming. Students who engaged more in the collaborative programming or interacted more with partners on the wiki showed greater program implementation achievements. The major benefit of using the wiki was the enhanced ability to observe the dynamic programming procedure and to encounter programming conflicts, which contributed to the process of procedural knowledge acquisition and elaboration.
Osteolipoma in the Forearm
Authors: Kwan Ip Natalie Siu , Lau Hon Wai , Wong Wai Yu , Yuen Ming Keung
Published: May 2018

A case of left distal forearm and wrist osteolipoma in a 56 year old female is reported. The patient presented with a 3 year history of nontender left wrist mass. Radiographs demonstrated a lobulated mass of mixed low density and calcifications, not adjacent to and with no connection to underlying bone. Ultrasound showed a spheroid hyperechoic lesion with internal heterogeneity and rim of calcifications. Magnetic resonance imaging revealed a lesion with predominantly fat characteristics on T1 weighted and T2 weighted sequences, with rim of peripheral calcification and specks of internal calcification. Histological examination after excision of the mass showed the lesion to be an osteolipoma. Osteolipoma is a rare variant of lipoma with osseous metaplasia and should be considered in the differential of a fat containing mass with ossification.
Fractional elliptic quasi-variational inequalities: Theory and numerics
Authors: Antil Harbir , Rautenberg Carlos N.
Published: May 2018

This paper introduces an elliptic quasi-variational inequality (QVI) problem class with fractional diffusion of order

s \in (0, 1)

, studies existence and uniqueness of solutions and develops a solution algorithm. As the fractional diffusion prohibits the use of standard tools to approximate the QVI, instead we realize it as a Dirichlet-to-Neumann map for a problem posed on a semi-infinite cylinder. We first study existence and uniqueness of solutions for this extended QVI and then transfer the results to the fractional QVI: This introduces a new paradigm in the field of fractional QVIs. Further, we truncate the semi-infinite cylinder and show that the solution to the truncated problem converges to the solution of the extended problem, under fairly mild assumptions, as the truncation parameter tends to infinity. Since the constraint set changes with the solution, we develop an argument using Mosco convergence. We state an algorithm to solve the truncated problem and show its convergence in function space. Finally, we conclude with several illustrative numerical examples.
Вероятностная аппроксимация оператора эволюции
Authors: Ibragimov Il'dar Abdullovich , Smorodina Natal'ya Vasil'evna , Faddeev Mikhail Mikhailovich
Published: April 2018

В работе предложен способ аппроксимации в смысле сильной операторной сходимости оператора $e^{-itH}$, где $H=-\frac{1}{2}\frac{d^2}{dx^2}+V(x)$. Аппроксимирующие операторы имеют вид математических ожиданий функционалов от некоторого точечного случайного поля.
О множестве гиперболичности вещественной кривой
Authors: Orevkov Stepan Yur'evich
Published: April 2018

Множеством гиперболичности вещественной алгебраической кривой в трехмерном проективном пространстве называется множество прямых, относительно которых кривая гиперболична. Мы строим пример гладкой неприводимой кривой, у которой множество гиперболичности несвязно, но при этом его компоненты связности не различаются индексами зацепления с компонентами связности кривой.
Вырождение орисфер в сферических однородных пространствах
Authors: Vinberg Ernest Borisovich , Gindikin Semen Grigor'evich
Published: April 2018

Орисферами для действия полупростой алгебраической группы $G$ на аффинном многообразии $X$ называются орбиты общего положения максимальной унипотентной подгруппы $U\subset G$ или, что эквивалентно, слои общего положения категорного фактора многообразия $X$ по действию группы $U$, задаваемого значениями старших весовых функций. В работе изучаются остальные слои этого фактора (которые мы называем вырожденными орисферами) для некоторого класса сферических $G$-многообразий, включающего в себя все односвязные симметрические пространства.
Does nalbuphine have a niche in managing pain?
Authors: Davis, MD, FCCP, FAAHPM Mellar P. , Fernandez, MD Carlos , Regel, CRNP Sally , McPherson, PharmD, MA, MDE, BCPS, CPE Mary Lynn
Published: May 2018

Nalbuphine has been commercially available for 40 years for the treatment of acute pain; few studies have centered on management of chronic pain. Nalbuphine unique pharmacology is an advantage in pain management. It is μ antagonist, partial κ agonist for G-proteins and beta-arrestin-2. Benefits are related to G-protein interactions resulting in less nausea, pruritus, and respiratory depression than morphine. At low doses, nalbuphine reduces side effects particularly respiratory depression without loss of analgesia when combined with potent opioids. Nalbuphine pharmacokinetics are moderately altered in renal failure. Several studies have found that nalbuphine reduces uremic pruritus. Nalbuphine has drawbacks: it is not an oral formulation, it causes withdrawal in patients on sustained released opioids, and it cannot be used to treat an opioid withdrawal syndrome. Nalbuphine, despite being a μ receptor antagonist produces a drug-liking effect and can be abused. There are very few deaths associated with nalbuphine alone in part due to the fact it is rarely used but also related to a ceiling on respiratory depression.
Impacts of air pollutants from fire and non-fire emissions on the regional air quality in Southeast Asia
Authors: Lee Hsiang-He , Iraqui Oussama , Gu Yefu , Yim Steve Hung-Lam , Chulakadabba Apisada , Tonks Adam Yiu-Ming , Yang Zhengyu , Wang Chien
Published: May 2018

Abstract. Severe haze events in Southeast Asia caused by particulate pollution have become more intense and frequent in recent years. Widespread biomass burning occurrences and particulate pollutants from human activities other than biomass burning play important roles in degrading air quality in Southeast Asia. In this study, numerical simulations have been conducted using the Weather Research and Forecasting (WRF) model coupled with a chemistry component (WRF-Chem) to quantitatively examine the contributions of aerosols emitted from fire (i.e., biomass burning) versus non-fire (including fossil fuel combustion, and road dust, etc.) sources to the degradation of air quality and visibility over Southeast Asia. These simulations cover a time period from 2002 to 2008 and are driven by emissions from (a) fossil fuel burning only, (b) biomass burning only, and (c) both fossil fuel and biomass burning. The model results reveal that 39 % of observed low-visibility days (LVDs) can be explained by either fossil fuel burning or biomass burning emissions alone, a further 20 % by fossil fuel burning alone, a further 8 % by biomass burning alone, and a further 5 % by a combination of fossil fuel burning and biomass burning. Analysis of an 24 h PM2.5 air quality index (AQI) indicates that the case with coexisting fire and non-fire PM2.5 can substantially increase the chance of AQI being in the moderate or unhealthy pollution level from 23 to 34 %. The premature mortality in major Southeast Asian cities due to degradation of air quality by particulate pollutants is estimated to increase from  ∼  4110 per year in 2002 to  ∼  6540 per year in 2008. In addition, we demonstrate the importance of certain missing non-fire anthropogenic aerosol sources including anthropogenic fugitive and industrial dusts in causing urban air quality degradation. An experiment of using machine learning algorithms to forecast the occurrence of haze events in Singapore is also explored in this study. All of these results suggest that besides minimizing biomass burning activities, an effective air pollution mitigation policy for Southeast Asia needs to consider controlling emissions from non-fire anthropogenic sources.
Secondary organic aerosol production from pinanediol, a semi-volatile surrogate for first-generation oxidation products of monoterpenes
Authors: Ye Penglin , Zhao Yunliang , Chuang Wayne K. , Robinson Allen L. , Donahue Neil M.
Published: May 2018

Abstract. We have investigated the production of secondary organic aerosol (SOA) from
pinanediol (PD), a precursor chosen as a semi-volatile surrogate for
first-generation oxidation products of monoterpenes. Observations at the
CLOUD facility at CERN have shown that oxidation of organic compounds such
as PD can be an important contributor to new-particle formation. Here we
focus on SOA mass yields and chemical composition from PD photo-oxidation in
the CMU smog chamber. To determine the SOA mass yields from this
semi-volatile precursor, we had to address partitioning of both the PD and
its oxidation products to the chamber walls. After correcting for these
losses, we found OA loading dependent SOA mass yields from PD oxidation that
ranged between 0.1 and 0.9 for SOA concentrations between 0.02 and 20 µg m−3, these mass yields are 2–3 times larger than typical of
much more volatile monoterpenes. The average carbon oxidation state measured
with an aerosol mass spectrometer was around −0.7. We modeled the chamber
data using a dynamical two-dimensional volatility basis set and found that a
significant fraction of the SOA comprises low-volatility organic compounds
that could drive new-particle formation and growth, which is consistent with
the CLOUD observations.
Random forest meteorological normalisation models for Swiss PM10 trend analysis
Authors: Grange Stuart K. , Carslaw David C. , Lewis Alastair C. , Boleti Eirini , Hueglin Christoph
Published: May 2018

Abstract. Meteorological normalisation is a technique which accounts for changes in meteorology over time in an air quality time series. Controlling for such changes helps support robust trend analysis because there is more certainty that the observed trends are due to changes in emissions or chemistry, not changes in meteorology. Predictive random forest models (RF; a decision tree machine learning technique) were grown for 31 air quality monitoring sites in Switzerland using surface meteorological, synoptic scale, boundary layer height, and time variables to explain daily PM10 concentrations. The RF models were used to calculate meteorologically normalised trends which were formally tested and evaluated using the Theil–Sen estimator. Between 1997 and 2016, significantly decreasing normalised PM10 trends ranged between −0.09 and −1.16 µg m−3 yr−1 with urban traffic sites experiencing the greatest mean decrease in PM10 concentrations at −0.77 µg m−3 yr−1. Similar magnitudes have been reported for normalised PM10 trends for earlier time periods in Switzerland which indicates PM10 concentrations are continuing to decrease at similar rates as in the past. The ability for RF models to be interpreted was leveraged using partial dependence plots to explain the observed trends and relevant physical and chemical processes influencing PM10 concentrations. Notably, two regimes were suggested by the models which cause elevated PM10 concentrations in Switzerland: one related to poor dispersion conditions and a second resulting from high rates of secondary PM generation in deep, photochemically active boundary layers. The RF meteorological normalisation process was found to be robust, user friendly and simple to implement, and readily interpretable which suggests the technique could be useful in many air quality exploratory data analysis situations.
Seasonal and spatial variability of methane emissions from a subtropical reservoir in Eastern China
Authors: Yang Le , Li Hepeng , Yue Chunlei , Wang Jun
Published: May 2018

Abstract. Subtropical reservoirs are important source of atmospheric methane (CH4). This study aims to investigate the spatiotemporal variability of CH4 emission, using the methods of static floating chambers and bubble traps, from the water surfaces of Xin'anjiang Reservoir. Seasonal variability showed that CH4 emission from the main reservoir body was high in autumn and low in spring, with medium values in summer and winter. The dynamics of CH4 emission was flat from February to June, but fluctuated dramatically from July to January in the upstream river, which was interrupted by the bubbles in the second half year. However, CH4 emission was largely influenced by the streamflow in the downstream river, with a minimum value in February due to an extreme low streamflow (275 m3 s−1). Spatial variability showed the upstream river had the highest CH4 flux (3.90 ± 7.80 mg CH4 m−2 h−1), followed by the downstream river (0.50 ± 0.41 mg CH4 m−2 h−1), and the main reservoir body stood the last place (0.01 ± 0.07 mg CH4 m−2 h−1). Therefore, it was necessary to capture the variation of CH4 emission from reservoirs in the space and time scales to avoid the error of estimating the CH4 emission incorrectly.
Technical note: Open-paleo-data implementation pilot – the PAGES 2k special issue
Authors: Kaufman Darrell S. ,   PAGES 2k special-issue editorial team
Published: May 2018

Abstract. Data stewardship is an essential element of the publication process. Knowing
how to enact data polices that are described only in general terms can be
difficult, however. Examples are needed to model the implementation of
open-data polices in actual studies. Here we explain the procedure used to
attain a high and consistent level of data stewardship across a special issue
of the journal Climate of the Past. We discuss the challenges
related to (1) determining which data are essential for public archival, (2)
using data generated by others, and (3) understanding data citations. We
anticipate that open-data sharing in paleo sciences will accelerate as the
advantages become more evident and as practices that reduce data loss become
the accepted convention.