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111.
Emanuele Salerno Francesca Martinelli Anna Tonazzini 《International Journal on Document Analysis and Recognition》2013,16(2):177-187
The problem of see-through cancelation in digital images of double-sided documents is addressed. We show that a nonlinear convolutional data model proposed elsewhere for moderate show-through can also be effective on strong back-to-front interferences, provided that the recto and verso pure patterns are estimated jointly. To this end, we propose a restoration algorithm that does not need any classification of the pixels. The see-through PSFs are estimated off-line, and an iterative procedure is then employed for a joint estimation of the pure patterns. This simple and fast algorithm can be used on both grayscale and color images and has proved to be very effective in real-world cases. The experimental results we report in this paper demonstrate that our algorithm outperforms the ones based on linear models with no need to tune free parameters and remains computationally inexpensive despite the nonlinear model and the iterative solution adopted. Strategies to overcome some of the residual difficulties are also envisaged. 相似文献
112.
This research centres on the conference dedicated to the theme “Divina Proporzione” organised on the occasion of the 1951 Milano Triennale. Participating in the meeting were some of the most important art historians, architects, engineers, mathematicians and artists of the day: from a very young James Ackerman to Pier Luigi Nervi, from Le Corbusier to Carlo Mollino, from Lucio Fontana to Ernesto Rogers. That historic moment, even given the plurality of voices and approaches, represented the synthesis of a reflection that was as urgent as it was rich in implications, since it brought the concept of “proportion” into the very heart of post-war reconstruction. 相似文献
113.
Anna Fensel Slobodanka Tomic Vikash Kumar Milan Stefanovic Sergey V. Aleshin Dmitry O. Novikov 《Informatik-Spektrum》2013,36(1):46-57
As the urgent need for efficient and sustainable energy usage becomes ever more apparent, interest in Smart Homes is on the rise. The SESAME-S project (SEmantic SmArt Metering – Services for Energy Efficient Houses) uses semantically linked data to actively assist end-consumers in making well-informed decisions and controlling their energy consumption. By integrating smart metering and home automation functionality, SESAME-S works to effectively address the potential mass market of end-consumers with an easily customizable solution that can be widely implemented in domestic or business environments, with expected savings of over 20?% from the total energy bill. The developed system is a basis for conceptualizing, demonstrating, and evaluating a variety of innovative end-consumer services and their user interface paradigms. In this paper, we present the SESAME-S system as a whole and discuss the semantically enabled services, demonstrating that such systems may have broad acceptance in the future. The data obtained through such systems will be invaluable for future global energy-efficiency strategies and businesses. 相似文献
114.
Anna Halicka 《Construction and Building Materials》2011,25(10):4072-4078
The paper describes the investigations of concrete composite units consisting of two concrete parts. In each test series the interface was differently arranged and characterised by different strength parameters. They were: non-reinforced interface with existing adhesion, reinforced interface with existing adhesion and reinforced interface with broken adhesion. Simply-supported beams were subjected to four point bending. The failure of all beams was the result of exceeding the shear resistance of the support zones, but the cracks pattern in each series was different. The paper presents the results of the tests, in particular: deflection, stresses in the longitudinal and transverse reinforcement and strains of concrete. The distribution of strains along the height of the beam and the slip between the connected parts are also described.On the basis of these data a classification of failure mechanisms of concrete composite beams is proposed, as well as the analytical criteria allowing to predict failure manner of a composite beam. 相似文献
115.
Jarrett Robin B.; Vittengl Jeffrey R.; Clark Lee Anna; Thase Michael E. 《Canadian Metallurgical Quarterly》2011,23(3):578
The authors describe the development and psychometric properties of a new measure called the Skills of Cognitive Therapy (SoCT) in depressed adults and their cognitive therapists. The 8-item SoCT assesses patients' understanding and use of basic cognitive therapy (CT) skills rated from the perspectives of both observers (SoCT-O; therapists in this report) and patients (SoCT-P). Ratings of patients' skill usage are made on 5-point Likert-type scales ranging from 1 (never) to 5 (always or when needed). Higher scores reflect greater patient skill in applying cognitive therapy principles and coping strategies. To develop this scale, a 33-item pool was used, rated by both patients and their therapists at the middle and end of CT (Ns = 359–416), and evaluated the reliability and concurrent and predictive validity of both versions of the scale. The SoCT has excellent internal consistency reliability and moderate correlations between the observer and patient versions. It is important to note that the SoCT showed good predictive validity for response when collected at the midpoint of acute phase CT. Considering both patients' self-ratings and clinicians' SoCT ratings, the odds ratio for responding to CT was 2.6. The practical utility of the SoCT is discussed, as well as its theoretical importance in research of patient CT skills (e.g., acquisition, comprehension, and generalization) as putative moderators or mechanisms of symptom change in the therapy. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
116.
Kleinspehn-Ammerlahn Anna; Riediger Michaela; Schmiedek Florian; von Oertzen Timo; Li Shu-Chen; Lindenberger Ulman 《Canadian Metallurgical Quarterly》2011,47(3):632
Many social interactions require the synchronization—be it automatically or intentionally—of one's own behavior with that of others. Using a dyadic drumming paradigm, the authors delineate lifespan differences in interpersonal action synchronization (IAS). Younger children, older children, younger adults, and older adults in same- and mixed-age dyads were instructed to drum in synchrony with their interaction partner at a constant, self-chosen tempo. Adult-only dyads showed the highest and children-only the lowest levels of IAS accuracy. It is important to note that children improved reliably in IAS accuracy when paired with older partners. The observed age-related differences in IAS accuracy remained reliable after statistically controlling for individual differences in the ability to synchronize to a metronome and for between-dyad differences in tempo. The authors conclude that IAS improves from middle childhood to adulthood and that adult interaction partners may facilitate its development. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
117.
Anna Przybyła Mirosław Chorążewski Edward Zorębski Wojciech Marczak 《International Journal of Thermophysics》2011,32(4):852-866
Densities and speeds of ultrasound in binary mixtures of dibromomethane with heptane have been measured within the temperature range from 288.15 K to 318.15 K. From the experimental data, the thermodynamic excess volume, molar isobaric expansion, molar isentropic compression, and ultrasonic speed were calculated. The excess volume and excess isentropic compression have opposite signs, whereas the excess isobaric expansion is an S-shaped function of the mole fraction. An explanation was suggested to account for the excesses in terms of intermolecular interactions. It involved energetic and steric factors. Moreover, it was shown that the positive excess sound speed results almost entirely from the negative excess compression. 相似文献
118.
Hervandil Morosini Sant’Anna Murilo Fonseca Leal 《Engineering Fracture Mechanics》2011,78(8):1669-1683
PSA pressure vessels are equipments used in refining industries for cleaning the hydrogen upcoming from the reforming or hydrogen generation unities. In one regular inspection, some embedded cracks were found in the entrance nozzle-head weld. Then, instead of advance its decommissioning and waste much time until the refinery purchase a new vessel, a structural stress analysis using the finite element method was performed in order to obtain the stress field at the site of the crack, considering the real loading cycle. Despite the acting load is only the internal pressure, the nozzle-head weld is a region where a complex stress state is present (bending and axial stresses). ASME VIII Division 2, Appendix 5 addresses this issue by applying a rule for multiaxial fatigue life estimation for non-proportional loading. With ASME estimated fatigue life results, it was applied the British Standard 7910 procedure to decide if the equipment can operate safely. The calculation also assesses the crack growing by using a modified bi-linear Paris law. Finally, it was computed how long the cracks would take to get to their critical size and then retire definitively the equipment. 相似文献
119.
Anna Fischer Manuel Schmitz Barbara Aichmayer Peter Fratzl Damien Faivre 《Journal of the Royal Society Interface》2011,8(60):1011-1018
Magnetosome biomineralization and chain formation in magnetotactic bacteria are two processes that are highly controlled at the cellular level in order to form cellular magnetic dipoles. However, even if the magnetosome chains are well characterized, controversial results about the microstructure of magnetosomes were obtained and its possible influence in the formation of the magnetic dipole is to be specified. For the first time, the microstructure of intracellular magnetosomes was investigated using high-resolution synchrotron X-ray diffraction. Significant differences in the lattice parameter were found between intracellular magnetosomes from cultured magnetotactic bacteria and isolated ones. Through comparison with abiotic control materials of similar size, we show that this difference can be associated with different oxidation states and that the biogenic nanomagnetite is stoichiometric, i.e. structurally pure whereas isolated magnetosomes are slightly oxidized. The hierarchical structuring of the magnetosome chain thus starts with the formation of structurally pure magnetite nanoparticles that in turn might influence the magnetic property of the magnetosome chains. 相似文献
120.