149 research outputs found
Elastic impedance based facies classification using support vector machine and deep learning
No full textMachine learning methods including support-vector-machine and deep learning are applied to facies classification problems using elastic impedances acquired from a Paleocene oil discovery in the UK Central North Sea. Both of the supervised learning approaches showed similar accuracy when predicting facies after the optimization of hyperparameters derived from well data. However, the results obtained by deep learning provided better correlation with available wells and more precise decision boundaries in cross-plot space when compared to the support-vector-machine approach. Results from the support-vector-machine and deep learning classifications are compared against a simplified linear projection based classification and a Bayes-based approach. Differences between the various facies classification methods are connected by not only their methodological differences but also human interactions connected to the selection of machine learning parameters. Despite the observed differences, machine learning applications, such as deep learning, have the potential to become standardized in the industry for the interpretation of amplitude versus offset cross-plot problems, thus providing an automated facies classification approach.Applied Geophysics and Petrophysic
Azimuthal Anisotropy of the Megaregolith at the Apollo 14 Landing Site
No full textThe characterization of the megaregolith on the Moon has been investigated in various ways including analysis of lunar meteorites, remote sensing of mineralogy and gravity, and deriving a seismic velocity profile. In this study, we propose a method for analyzing azimuthal anisotropy of the megaregolith. We call this method deep-moonquake seismic interferometry applied to S-wave coda (DMSI-S). DMSI-S can turn the records of deep moonquakes into recordings from virtual active sources. The retrieved virtual sources coincide with the station positions, and thus, we obtain virtual zero-offset (pulse-echo) measurements. DMSI-S is applied to seven clusters of deep moonquakes recorded at the Apollo 14 landing site, resulting in virtual zero-offset measurements at the Apollo station 14. We use the S-wave recordings retrieved from DMSI-S to analyze azimuthal anisotropy. We find weak anisotropy at the layer where the megaregolith is assumed to be present. We interpret our result to show that the megaregolith at this site is characterized by a layer (or layers) of impact material, following the Imbrium impact, with internal alignment of the crushed material.Applied Geophysics and Petrophysic
Nowy wymiar strachu - Blair Witch Project (1999) Daniela Myricka i Eduardo Sáncheza
No full textThe feature-film debut “Blair Witch Project” (1999) by Daniel Myrick and Eduardo Sánchez was an unexpected box-office hit. In spite of having a very low-budget and no movie stars in the cast, the directors adapted new means through which horror could be compellingly depicted on screen. The author of the article intends to unravel why so many viewers of “Blair Witch Project” believed that it presented a true story. On the one hand, it is connected with a well-prepared marketing campaign conducted by Myrick and Sánchez on the Internet. On the other, they used techniques characteristic of a documentary film, which eventually gave the impression that the film itself is a recording of authentic events. The author of the article has a firm belief the innovative ways in which the directors tried to thrill the American audience were the source of the film’s great success.Fryderyk Kwiatkowsk
The new dimension of fear : "Blair Witch Project" (1999) Daniel Myrick and Eduardo Sánchez
No full textThe feature-film debut "Blair Witch Project" (1999) by Daniel Myrick and Eduardo Sánchez was an unexpected box-office hit. In spite of having a very low-budget and no movie stars in the cast, the directors adapted new means through which horror could be compellingly depicted on screen. The author of the article intends to unravel why so many viewers of "Blair Witch Project" believed that it presented a true story. On the one hand, it is connected with a well-prepared marketing campaign conducted by Myrick and Sánchez on the Internet. On the other, they used techniques characteristic of a documentary film, which eventually gave the impression that the film itself is a recording of authentic events. The author of the article has a firm belief the innovative ways in which the directors tried to thrill the American audience were the source of the film’s great success
A method to estimate seismic heterogeneity through Sp-waves and frequency dependent quality factor Q analyses: A case study in southeastern offshore of Hokkaido, Japan
No full textHybris, czyli o przyczynach porażek ambitnych projektów w twórczości mistrzów kina
No full textThe author, by adopting historical-critical method, presents the concept of the „unsuccessful masterpiece” and puts it on the borderline between film studies and film criticism. The point of departure for his analyses comprises a selected group of works by eminent directors which unfortunately did not meet expectations of critics and audience. The main source of the author’s inspiration for establishing the category of unsuccessful masterpiece lies in the remarks written by distinguished film critics, e. g. Roger Ebert. The author also draws on inquiries made by the scholars who tried to grasp the phenomenon of a masterpiece within theoretical borders. Therefore, he depicts the characteristic of an unsuccessful masterpiece based on the above-mentioned assumptions. In the author’s view this notion might be a useful tool for film critics to for evaluating works of specific kind. Moreover, the author’s attempt may contribute to theoretical studies on the phenomenon of masterpiece.Fryderyk Kwiatkowsk
Hybris, or the causes of failure of the ambitious projects in the oeuvre of masters of cinema
No full textAutor, przyjmując perspektywę historyczno-krytyczną, przedstawia pojęcie "nieudanego arcydzieła", umieszczając je na pograniczu filmoznawstwa oraz krytyki filmowej. Punktem wyjścia dla analizy jest wybrana grupa utworów wybitnych reżyserów, które nie spełniły oczekiwań zarówno krytyków, jak i publiczności. Źródłem inspiracji dla stworzenia kategorii nieudanego arcydzieła są z jednej strony opinie uznanych krytyków filmowych, których uwagi autor porządkuje i uogólnia. Z drugiej zaś, czerpie z analiz badaczy, podejmujących teoretyczną refleksję nad zagadnieniem arcydzieła. W oparciu o powyższe założenia, autor przedstawia wyznaczniki nieudanego arcydzieła. Pojęcie to może bowiem służyć krytykom filmowym w ocenie określonego rodzaju utworów. Ponadto, dokonana przez autora próba uzupełnia istotną lukę w badaniach nad pojęciem arcydzieła.The author, by adopting historical-critical method, presents the concept of the "unsuccessful masterpiece" and putts it on the borderline between film studies and film criticism. The point of departure for his analyses is a selected group of works by eminent directors which unfortunately did not meet expectations of critics and audience. The main source of the author’s inspiration for establishing the category of unsuccessful masterpiece lies in the remarks written by distinguished film critics, e. g. Roger Ebert. The author also draws on inquiries made by the scholars who tried to grasp the phenomenon of a masterpiece within theoretical borders. Therefore, he depicts the characteristic of an unsuccessful masterpiece based on the above-mentioned assumptions. In the author’s view this notion might be a useful tool for film critics to for evaluating works of specific kind. Moreover, the author’s attempt may contribute to theoretical studies on the phenomenon of masterpiece
Tectonic tremor characterized by principal-component analysis in the vicinity of central Chile and Argentina
No full textNo conclusive evidence has been presented to date for tectonic tremor (TT) in the vicinity of central Chile, where the Nazca Plate is subducting beneath the South American Plate. Subduction in our experimental location (roughly 35.5° S, 70.5° W) is steep and fairly unobstructed compared to the flattened and more seismogenic behavior to the north. We seek to identify TT in our experimental area, whose geodynamics are comparable to tremor-rich subduction zones such as Cascadia and the Nankai Trough. Our method combines time-series visual inspection, frequency-spectrum analysis, waveform cross-correlation, and 3-component (3C) signal covariance to explore the presence of TT in this region. We have identified TT using stations in central Chile and the Malargüe region, Argentina. The TT exhibits similar features to other TT observations worldwide. Waveform characteristics for the TT in our study, particularly dimension of the 3C signal covariance, vary as a function of apparent source location. The duration of one episode of identified TT was about 10 h, which may indicate that the plate interface where tremor generates is strongly coupled. We conclude that our observations reflect features of the local propagation, rather than the tremor source itself.Accepted Author ManuscriptApplied Geophysics and Petrophysic
Azimuthal Anisotropy of the Megaregolith at the Apollo 14 Landing Site
No full textThe characterization of the megaregolith on the Moon has been investigated in various ways including analysis of lunar meteorites, remote sensing of mineralogy and gravity, and deriving a seismic velocity profile. In this study, we propose a method for analyzing azimuthal anisotropy of the megaregolith. We call this method deep-moonquake seismic interferometry applied to S-wave coda (DMSI-S). DMSI-S can turn the records of deep moonquakes into recordings from virtual active sources. The retrieved virtual sources coincide with the station positions, and thus, we obtain virtual zero-offset (pulse-echo) measurements. DMSI-S is applied to seven clusters of deep moonquakes recorded at the Apollo 14 landing site, resulting in virtual zero-offset measurements at the Apollo station 14. We use the S-wave recordings retrieved from DMSI-S to analyze azimuthal anisotropy. We find weak anisotropy at the layer where the megaregolith is assumed to be present. We interpret our result to show that the megaregolith at this site is characterized by a layer (or layers) of impact material, following the Imbrium impact, with internal alignment of the crushed material
Fabrication of FITC-doped silica nanoparticles and study of their cellular uptake in the presence of lectins
No full text- …
