bluuebunny/crossref_metadata_2025_split huggingface dataset:
Les trois boucles. Notes sur les modes d’existence des films d’artistes
Authors: Camporesi Enrico 
Published: February 2020

En tant que matériau issu d’une production industrielle, le film est techniquement reproductible, et ne semble donc pas, à première vue, poser de problèmes particuliers quant à son existence « multiple ». Cependant, lorsque l’on observe dans le détail la culture matérielle et l’histoire de la circulation des films d’artistes, le scénario apparaît d’une toute autre complexité. Cet article vise à reconsidérer, sous l’angle de la conservation-restauration, et à partir de l’œuvre de Nam June Paik Zen for Film (1962-1964), exemplaire à cet égard, le statut particulier (multiple) du film d’artiste, considéré à la fois en tant qu’objet et événement (une copie et une projection) – deux modes d’existence qui s’excluent mutuellement dans leur présentation. Les conséquences théoriques de cette observation nous signalent une fausse opposition entre « unique » et « multiple » dans le domaine du film.
Integrated dataset of deformation measurements in fractured volcanic tuff and meteorological data (Coroglio coastal cliff, Naples, Italy)
Authors: Matano Fabio , Caccavale Mauro , Esposito Giuseppe , Fortelli Alberto , Scepi Germana , Spano Maria , Sacchi Marco 
Published: February 2020

Abstract. Along the coastline of the Phlegraean Fields volcanic
district, near Naples (Italy), severe retreat processes affect a large part
of the coastal cliffs, mainly made of fractured volcanic tuff and
pyroclastic deposits. Progressive fracturing and deformation of rocks can
lead to hazardous sudden slope failures on coastal cliffs. Among the
triggering mechanisms, the most relevant are related to meteorological
factors, such as precipitation and thermal expansion due to solar heating of
rock surfaces. In this paper, we present a database of measurement time
series taken over a period of ∼4 years (December 2014–October 2018)
for the deformations of selected tuff blocks in the Coroglio coastal
cliff. The monitoring system is implemented on five unstable tuff blocks and
is formed by nine crackmeters and two tiltmeters equipped with internal
thermometers. The system is coupled with a total weather station, measuring
rain, temperature, wind and atmospheric pressure and operating from January 2014 up to December 2018. Measurement frequencies of 10 and 30 min have been set for meteorological and deformation sensors
respectively. The aim of the
measurements is to assess the magnitude and temporal pattern of rock block
deformations (fracture opening and block movements) before block failure and
their correlation with selected meteorological parameters. The results of a
multivariate statistical analysis of the measured time series suggest a
close correlation between temperature and deformation trends. The recognized
cyclic, sinusoidal changes in the width (opening–closing) of fractures and
tuff block rotations are ostensibly linked to multiscale (i.e., daily,
seasonal and annual) temperature variations. Some trends of cumulative
multi-temporal changes have also been recognized. The full databases are
freely available online at: https://doi.org/10.1594/PANGAEA.896000
(Matano et al., 2018) and https://doi.org/10.1594/PANGAEA.899562 (Fortelli
et al., 2019).
Evaluation of the Diavik Diamond Deposit
Authors: Pollock K. , Davy A. T. , Moss S. 
Published: February 2020

Abstract
The 23-year evaluation history of the Diavik kimberlites (1994–2017) commenced with elevated microdiamond stone counts from small samples of drill core. These stone counts equated with high sample grades, grades that were higher than anyone had expected (2–5 carats per tonne [ct/t]), and caused many experienced explorers to change their opinions on the prospectivity of small kimberlites (1–2 ha in surface area). The diamond size-frequency distributions were coarser trending, and the diamond quality was “mixed,” resulting in &gt;1-mm diamond prices of about US$100 per ct, slightly better than the world average. This grade and price combination gave ore values ranging from US$200 to US$500 per tonne and, with four kimberlites, the Diavik joint venture partners estimated that there would be sufficient ore to underpin a 20-year mine life at a treatment rate of 2.2 million tonnes per annum.
Primary diamond deposits are usually sampled on 50- or 100-m grids. Grade drilling at Diavik was conducted on 25-m centers, allowing for 12- × 6-in holes in each kimberlite. The kimberlites are located beneath Lac de Gras and had to be bulk sampled underground to generate diamond parcels (approximately 12,000 and 8,000 ct) for sorting and valuation. Three of the kimberlites transitioned from open-pit to underground mines (two sublevel retreats and one cut and fill). The fourth kimberlite narrows at depth and is unlikely to be mined from underground.
Grade reconciliation has presented challenges; each kimberlite comprises three to four geologic units and plant feed can comprise ore from three kimberlites concurrently. Careful ore management and tracking has overcome these difficulties, meaning that grade, size-frequency, and size-quality reconciliations have been meaningful and, for the most part, have varied less than ±5% on an annual basis. The Diavik mine is neither the largest nor the smallest deposit in the world. However, by the end of its life it will have produced about 7 million carats of diamonds per annum for 22 years at an average grade of 3.4 ct/t. It represents an exceptional diamond resource for kimberlites ~100 m in diameter, considering that it is also located in one of the coldest and remotest locations on Earth.
Diamonds from the Diavik Mine: From Formation Through Mantle Residence to Emplacement
Authors: Hunt Lucy , Stachel Thomas , Stern Richard A. , Creighton Steven 
Published: February 2020

Abstract
The morphology and color of Diavik diamonds, their nitrogen concentrations and δ13C values, and the composition of their mineral inclusions provide insights into the formation of diamonds and the evolution of the mantle root beneath the central Slave craton. The minerals which make up inclusions reflect a largely peridotitic mantle source region (77% peridotitic, 18% eclogitic, 1% ultradeep, and 4% ferropericlase bearing) predominantly composed of garnet-harzburgite. The major element geochemistry of the inclusions indicates that the degree of primary melt depletion during formation of the central Slave cratonic mantle root was distinctly lower than for other cratons worldwide—for example, beneath Yakutia and the Kaapvaal craton. The formation of peridotitic diamonds in the Paleoarchean was likely followed by lithosphere-scale cooling by about 150°C, based on differences in equilibration temperatures for touching and nontouching inclusion pairs and nitrogen aggregation-based residence temperature estimates for their respective diamond hosts.
The protolith of the eclogitic diamond substrate likely was basaltic-gabbroic oceanic crust, as shown by trace element patterns that include weak positive EuN anomalies in one garnet and one clinopyroxene inclusion, and a normal mid-ocean ridge basalt (NMORB) signature for the calculated bulk-rock eclogite.
The analysis of microinclusions in fibrous diamonds reveals the presence of high-density fluids that span a continuous compositional range between carbonatitic and saline end-members. The diamonds grew from continuously evolving and fractionating melts/fluids that moved through the mantle. Cathodoluminescence imaging of fibrous and clear monocrystalline diamonds indicates that they grew in pulses with intermittent periods of resorption.
Discovery of the Murowa Kimberlites, Zimbabwe
Authors: Sims K. , Fox K. , Harris M. , Chimuka L. , Reichhardt F. , Muchemwa E. , Gowera R. , Hinks D. , Smith C. B. 
Published: February 2020

Abstract
The Murowa diamond deposit comprises a cluster of kimberlite pipes and dikes intruded into the southern edge of the Tokwe block, the oldest part of the Zimbabwe Archean craton underlain by diamond-favorable, thick, strongly depleted, peridotitic mantle lithosphere. The Murowa discovery resulted from a four-year regional exploration program by a Rio Tinto Exploration/Rio Tinto Zimbabwe joint venture targeting both the structural continuation of the Limpopo mobile belt northeastward from Venetia and River Ranch diamond pipes as well as the adjacent Zimbabwe craton.
Follow-up of high-Cr magnesiochromites, often as single grain anomalies, from processed stream sediment samples was key to the discovery of the weakly diamondiferous Sese kimberlites, 70 km east-northeast of Murowa. Trials of different exploration techniques at Sese showed soil geochemistry (Mg, Cr, Ti, Nb, Ni) and horizontal loop (MaxMin) electromagnetic surveys as the most effective follow-up tools for locating kimberlites. The occurrence of fenitized granite adjacent to Sese kimberlite was used as an additional prospecting tool and blocks of fenite associated with a chromite- and diamond-bearing stream sample led to the discovery of the first Murowa pipe (K1). Airborne and ground electromagnetic surveys and soil geochemistry were then applied to locate the other Murowa kimberlites (K2-K5), followed by pitting and drilling.
Key factors for the Murowa discovery were the development of a stream sediment sampling methodology closely tied to a proprietary sample-processing laboratory; close linkage of laboratory and field staff, giving fast turnaround to prioritized samples; and a management strongly committed to the program.
Didática do Ensino Superior e a Lei 10.639/03 nos cursos de História do Ceará
Authors: Silva Joselina da , Paulo Adriano Ferreira de , Linhares Angela Maria Bessa 
Published: February 2020

A lei 10.639/03 foi instituída há 15 anos, inserindo estudos sobre história e cultura africana e afro-brasileira, modificando a Lei de Diretrizes e bases da Educação no Brasil em todos os níveis de ensino, inclusive o superior. Para a aplicação desta lei, os ensinos de História, Literatura e Educação Artística estão na vanguarda das didáticas a serem apresentadas. Neste trabalho, vamos expor os dados de uma pesquisa realizada sobre a formação de professores de História nas duas maiores universidades públicas do Ceará, UFC e UECE, visando analisar como o ensino superior tem se adequado ao que pede a lei 10.639/03, como também propor as componentes curriculares em torno de Didática do Ensino Superior como possibilidade de aplicação da referida lei. Esta pesquisa é do tipo qualitativa, e tem como procedimentos metodológicos análises bibliográficas e documentais. Nossa fundamentação teórica está embasada em alguns autores como Alberti (2013), Candau (2000), Fischer (2009), Gomes (2017), Munanga (2005), Saviani (2003). Os resultados encontrados mostram um diferencial entre o escrito em seus Projetos Políticos e Pedagógicos e a oferta de componentes curriculares em suas grades semestrais, sendo que a UFC contempla em sua grade curricular abordagens sobre a lei 10.639/03, enquanto que a UECE apresenta duas realidades distintas entre seus campus do interior e da capital do Ceará, sendo que os primeiros atendem de maneira adequada à legislação, enquanto que o curso de Fortaleza apresenta necessidades urgentes de implementação à temática de cultura africana e afro-brasileira para seus futuros historiadores. As aulas referentes às didáticas para o ensino superior, contudo, mostram-se uma possibilidade de inserção estratégica para as diretrizes legais.Com isso, concluímos que se faz necessária uma adequação efetiva, iniciando pelos registros formais nos Projetos Políticos e Pedagógicos de ambas universidades, como também um maior investimentos em aulas que visem uma formação multicultural no ensino de História.
Business Model as an Inducer of Disruptive Innovations: The Case of Gol Airlines
Authors: Pereira Sirlei de Almeida , Imbrizi Fabricio Garcia , De Freitas Alessandra Demite Goncalves , Alvarenga Marcelo Aparecido 
Published: February 2020

This study was undertaken to investigate the premises that the success of disruptive innovation is related to the business model adopted by organizations. An analysis of five business models from the literature review - Bovet and Martha (2000), Applegate (2001), Chesbrough and Rosenbloom (2002), Osterwalder and Pigneur (2010), and Rodrigues, Maccari and Lenzi (2012) – was conducted based on the case of the Brazilian Gol Airlines who is recognized as a success business that promoted a disruptive innovation. The results suggest that the assertive choice of the business model can leverage innovation processes, and two of the models listed are adherence to the case studied. Keywords: Disruptive Innovation; Business Model; Innovation Elements; Strategy; Gol Airlines.
A CORPUS-ASSISTED CRITICAL DISCOURSE ANALYSIS OF MODALITY IN SOCIAL TRANSFORMATION CAMPAIGNS IN NIGERIA
Authors: Ademilokun Mohammed Ayodeji 
Published: February 2020

This article examines modal resources in the mediatised discourse of social transformation in Nigeria with a view to showing how they are strategically used to code interpersonal meanings for enhanced and impactful delivery of messages of social transformation in the nation. Data for the study comprises texts on aspects of social transformation campaigns in Nigeria in the context of democracy, anti-corruption crusade, insecurity and domestic violence compiled as small corpora. The data comprises texts produced by government and non-governmental actors consisting of speeches, radio commentaries, jingles, printed texts, interviews, tweets and online newspaper comments and covers the period from March 2013 to March 2018. The five-year span was informed by the wide gamut of negative realities in the nation during the time frame which led to increased mediatisation of social transformation messages. Corpus-assisted critical discourse approach was employed for data analysis, using Fairclough’s (1989, revised 2015) dialectical relational approach, the corpus linguistic tool of Antconc, chi-square test on R-Studio and normalised relative frequencies. Data analysis revealed that the different participants in the discourse characteristically used different modal resources to reflect their power on the one hand and resistance on the other and to capture the intensity of their views and feelings on the actions required for Nigeria to experience genuine social transformation. The study concludes that even though the discourse is largely ideational, modal resources are deployed for emphasising the urgency and seriousness of the issues in the ideational contents of the discourse.
Analyse des impacts des changements climatiques sur les normes hydrologiques en Afrique de l’Ouest : cas du district d’Abidjan (sud de la Côte d’Ivoire)
Authors: Kouassi Amani Michel , Nassa Relwindé Abdoul-Karim , Kouakou Koffi Eugène , Kouame Koffi Fernand , Biemi Jean 
Published: February 2020

La connaissance des quantiles de précipitations extrêmes comme normes hydrologiques est nécessaire dans le cadre de projets d’aménagement pour la conception d’ouvrages hydrauliques et dans de nombreuses applications d’ingénierie. Dans un contexte de changements climatiques constatés en Afrique de l’Ouest, l’estimation des précipitations associées aux événements extrêmes est un sujet qui suscite des réflexions. Cette problématique soulève la question principale suivante : « Sur quelle base pourrait-on/devrait-on élaborer de nouveaux quantiles pour la gestion de projets de construction d’ouvrages hydrauliques? » Ainsi, l’objectif de cette étude est l’analyse des impacts des changements climatiques sur les normes hydrologiques relatives aux quantiles des pluies journalières maximales annuelles dans le district d’Abidjan (sud de la Côte d’Ivoire). L’approche méthodologique utilisée a consisté à la collecte de données de pluviométrie journalière pour la période 1961-2014. Les tests statistiques de base ont été effectués. Le choix du modèle statistique s’est porté sur la loi de Gumbel. Les paramètres du modèle ont été estimés et ont permis de calculer les quantiles sur plusieurs périodes de référence (1961-1990, 1971-2000, 1981-2010, 1961-2014) et plusieurs durées de retour (2, 5, 10, 20, 50 et 100 ans). Une comparaison des quantiles déterminés a été réalisée à partir des matrices d’écarts relatifs absolus. Les principaux résultats ont montré que les différentes séries définies sont constituées de valeurs indépendantes, stationnaires et homogènes. Les quantiles calculés varient pour une durée de retour donnée en fonction des périodes de référence choisies pour leur détermination. Cela traduit une non-stationnarité des quantiles due à l’instabilité du climat. Pour une meilleure sécurité des ouvrages hydrauliques, les recommandations de ce travail proposent d’utiliser les quantiles de la période historique (1961-1990) pour les périodes de retour inférieures à 50 ans. En ce qui concerne les durées de retour supérieures à 50 ans, il est possible d’utiliser les quantiles de deux périodes de référence (1961-1990, 1981-2010). Pour la valeur du gradex des méthodes empiriques de l’Office de la recherche scientifique et technique outre-mer (ORSTOM) et du Comité interafricain d’études hydrauliques (CIEH), il est recommandé de considérer 0,44 comme valeur pour le dimensionnement des ouvrages hydrauliques dans le district d’Abidjan.
Évaluation par approche statistique de l’impact des changements climatiques sur les ressources en eau : application au périmètre du Gharb (Maroc)
Authors: Acharki Siham , Amharref Mina , El Halimi Rachid , Bernoussi Abdes-Samed 
Published: February 2020

Afin d’évaluer l’impact des changements climatiques sur les ressources en eau, nous réalisons dans ce travail une analyse statistique spatio-temporelle de certaines variables climatiques du bilan hydrique. En effet, pour comprendre les variations climatiques ayant eu lieu dans le passé, l’analyse statistique doit se faire sur des séries chronologiques de données représentatives aussi bien sur le plan spatial que temporel. Toutefois, ces séries de données présentent souvent des lacunes dans les mesures et des irrégularités qui entravent leur utilisation directe. Pour cela, l’analyse statistique adoptée dans cette étude s’est appuyée sur trois étapes : i) le comblement des données manquantes par deux méthodes d’imputation, à savoir la méthode d’imputation multivariée par des équations enchainées (MICE) et la méthode des k plus proches voisins (k-NN); ii) la détection des changements significatifs ayant eu lieu dans le passé dans les séries chronologiques. Les dates de ces changements sont marquées par des ruptures au niveau de la moyenne des variables climatiques étudiées. Ces ruptures ont été validées par trois tests statistiques (Pettitt, Buishand et homogénéité normale SNH); iii) l’investigation de tendances potentielles dans les données climatiques par les tests statistiques (Sen et Mann-Kendall) ainsi que par une projection future. Comme application, nous avons traité les données climatiques pour les périodes 1974-2016 et 2021-2050 issues de cinq stations météorologiques du périmètre du Gharb situé au nord du Maroc. Les résultats obtenus montrent que la méthode d’imputation de MICE est la plus performante pour toutes les stations. Pour les tendances, les séries de températures, d’évapotranspiration potentielle et du déficit hydrique présentaient des tendances significatives à la hausse sur tous les pas de temps. Tandis que pour les séries de précipitations, les tendances étaient non significatives. Les projections à l’horizon 2021-2050 ont fait ressortir que nous pourrions assister à un léger décalage de la saison la plus pluvieuse de l’année et l’effet du réchauffement serait plus important en allant de l’ouest vers l’est du périmètre du Gharb en raison de l’effet de continentalité.
The effects of single versus multiple training sessions on the motor learning of two Krav Maga strike techniques, in women
Authors: Di Bacco Vincenzo E. , Taherzadeh Mehran , Birot Olivier , Gage William H. 
Published: February 2020

Background
Experts of the Krav Maga (KM) self-defense system propose that KM techniques are based on simple body movements which are suggested to be learned rapidly and retained. This study investigated the acquisition, retention, and further improvement with additional training of two KM strike techniques among novice female practitioners: straight punch and defensive kick.

Methods
Sixteen healthy females (age: 23 ± 3.7 years) without any previous martial arts/self-defense experience volunteered to participate. All participants received an initial 30-min instruction session (AQ), taught by a certified KM instructor, where each technique was deconstructed into three checkpoints (defined as a component of the entire movement) for learning. Participants were divided into two groups, one of which received additional training. Several kinematic and kinetic measures were recorded at four timepoints: immediately before AQ, immediately after AQ, 5 days after AQ, and 12 days after AQ.

Results
Results suggest that both techniques were learned rapidly, as checkpoint performance was significantly improved after AQ. Kick velocity and impact force also increased significantly after AQ; however, these measures did not change after AQ for the punch technique. Additional training did not improve either punch or kick performance beyond that learned during AQ.

Conclusion
The findings from this study suggest that a single training session may be sufficient to learn and retain KM strike techniques relatively permanently; and the acquisition of the kick technique may lead to concomitant improvements in kick velocity and impact force.
Inhibition of Myc transcriptional activity by a mini‐protein based upon Mxd1
Authors: Demma Mark J. , Hohn Michael J. , Sun Angie , Mapelli Claudio , Hall Brian , Walji Abbas , O'Neil Jennifer 
Published: February 2020

Myc, a transcription factor with oncogenic activity, is upregulated by amplification, translocation, and mutation of the cellular pathways that regulate its stability. Inhibition of the Myc oncogene by various modalities has had limited success. One Myc inhibitor, Omomyc, has limited cellular and in vivo activity. Here, we report a mini‐protein, referred to as Mad, which is derived from the cellular Myc antagonist Mxd1. Mad localizes to the nucleus in cells and is 10‐fold more potent than Omomyc in inhibiting Myc‐driven cell proliferation. Similar to Mxd1, Mad also interacts with Max, the binding partner of Myc, and with the nucleolar upstream binding factor. Mad binds to E‐Box DNA in the promoters of Myc target genes and represses Myc‐mediated transcription to a greater extent than Omomyc. Overall, Mad appears to be more potent than Omomyc both in vitro and in cells.