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101.
Dipl.-Geol. Franz Böhm Dipl.-Geol. Alexandros Savvatis Dipl.-Geol. Ulrich Steiner Prof. Dr. Michael Schneider Prof. Dr. Roman Koch 《Grundwasser》2013,18(1):3-13
The significant increase of geothermal energy production from the Malm reservoir in the greater area of Munich requires better understanding of the associated aquifer system. In this article, a good correlation between lithofacies and hydraulics is found on the basis of lithofacies evaluation of 17 geothermal wells. The main reservoir capacity within the Malm is made up by predominantly dolomitized massive limestones. Well analyses led to a simplified hydrostratigraphic profile, in which the lower Malm units (alpha to gamma) act as aquitards while Malm delta and epsilon units show a two-dimensional widespread and relatively homogeneous aquifer. Malm zeta can develop both aquifer- and aquitard-characteristics due to significant lateral facies changes. Facies changes depend largely on the basin position and subsequent dolomitisation is a crucial factor for the yield of wells drilled in this area. Based on these results, a new exploration strategy should focus more on facies characteristics than on structural features within the Malm Reservoir. 相似文献
102.
Social tagging in recommender systems: a survey of the state-of-the-art and possible extensions 总被引:1,自引:0,他引:1
Aleksandra Klasnja Milicevic Alexandros Nanopoulos Mirjana Ivanovic 《Artificial Intelligence Review》2010,33(3):187-209
Social tagging systems have grown in popularity over the Web in the last years on account of their simplicity to categorize
and retrieve content using open-ended tags. The increasing number of users providing information about themselves through
social tagging activities caused the emergence of tag-based profiling approaches, which assume that users expose their preferences
for certain contents through tag assignments. Thus, the tagging information can be used to make recommendations. This paper
presents an overview of the field of social tagging systems which can be used for extending the capabilities of recommender
systems. Various limitations of the current generation of social tagging systems and possible extensions that can provide
better recommendation capabilities are also considered. 相似文献
103.
Ben Tagger Dirk Trossen Alexandros Kostopoulos Stuart Porter George Parisis 《Computer Networks》2013,57(16):3249-3266
It has been argued by many that the Future Internet should address information at the core of its operation. Prototypes have emerged to embody this new paradigm. Applications for such networks, however, are noted primarily by their absence. In spite of an appetite for Information-Centric Networking (ICN) applications, relatively little has come to fruition. We suggest that this is due to an unfavorable development environment, requiring applications to interface with the ICN substrate directly. This paper aims to answer this shortcoming by providing a middleware layer that aids the development of more advanced applications. We also present an application that leverages the middleware and answers a real-world problem concerning personalised media delivery. We argue that the development of this, and potentially other, application(s) is aided by the presence of such an application environment. 相似文献
104.
Inside Cover: Nanosecond Dynamics of Calmodulin and Ribosome‐Bound Nascent Chains Studied by Time‐Resolved Fluorescence Anisotropy (ChemBioChem 7/2014) 下载免费PDF全文
105.
George P. Karayannidis Alexandros K. Nikolaidis Irini D. Sideridou Dimitris N. Bikiaris Dimitris S. Achilias 《大分子材料与工程》2006,291(11):1338-1347
Summary: In the framework of chemical recycling of polymers, leading to the generation of secondary value‐added products, PET flakes taken from post‐consumer soft drink bottles, were glycolyzed with DEG. The oligomers obtained were analyzed for their molecular weight and characterized by FT‐IR and POM. Subsequently, dimethacrylated oligoesters of PET glycolysate (PET‐GLY‐DMA) were synthesized by methacrylation of the glycolyzed PET product. The resulted monomer PET‐GLY‐DMA was studied by FT‐IR, POM and DSC. Thermal polymerization of this monomer was carried out at 80 °C in the presence of benzoyl peroxide as initiator. A UV‐curable formulation was also prepared on the basis of neat PET‐GLY‐DMA, as well as by mixing PET‐GLY‐DMA with styrene, using DMPA as photoinitiator. Nanoparticles of SiO2 were dispersed into PET‐GLY‐DMA/styrene copolymers as reinforcing agents and the mechanical properties of resins formed were studied.
106.
Papanikolaou Alexandros Alevizopoulos Aggelos Ilioudis Christos Demertzis Konstantinos Rantos Konstantinos 《International Journal of Information Security》2023,22(5):1511-1530
International Journal of Information Security - Timely detection and effective treatment of cyber-attacks for protecting personal and sensitive data from unauthorized disclosure constitute a core... 相似文献
107.
Neural Computing and Applications - Despite the popularisation of machine learning models, more often than not, they still operate as black boxes with no insight into what is happening inside the... 相似文献
108.
Konstantoudakis Konstantinos Breitgand David Doumanoglou Alexandros Zioulis Nikolaos Weit Avi Christaki Kyriaki Drakoulis Petros Christakis Emmanouil Zarpalas Dimitrios Daras Petros 《Multimedia Tools and Applications》2022,81(9):12211-12250
Multimedia Tools and Applications - Immersive 3D media is an emerging type of media that captures, encodes and reconstructs the 3D appearance of people and objects, with applications in... 相似文献
109.
Despoina Pouloudi Aristoteles Sotiriadis Margarita Theodorakidou Panagiotis Sarantis Alexandros Pergaris Michalis V. Karamouzis Stamatios Theocharis 《International journal of molecular sciences》2020,21(24)
Salivary gland carcinomas (SGCs) represent a group of rare tumors, with complete surgical resection being the main treatment option. Therapeutic armory for cases of locally aggressive, recurrent, and/or metastatic SGCs, though, remains poor since they exhibit high rates of resistance to systematic therapy. Angiogenesis is considered one of the contemporary hallmarks of cancer and anti-angiogenic factors have already been approved for the treatment of several cancer types. This review aims to summarize, in a histotype-specific manner, the most current available data on the angiogenic factors implicated in SGC angiogenesis, in order to highlight the differences between the most common SGC histotypes and the factors that may have a potential role as therapeutic targets. 相似文献
110.
Vasiliki Papadogianni Alexandros Romeos Athanasios Giannadakis Konstantinos Perrakis Thrassos Panidis 《Fire Technology》2020,56(3):1253-1285
The increasing use of composite materials in aircraft cabins and structures poses significant challenges in order to maintain and improve the fire safety of aviation. In this work, the flammability characteristics of a commercial glass-fibre reinforced phenolic composite (GFRP) used for aircraft cabin partitions and furnishing are investigated experimentally. Thermogravimetric analysis under inert atmosphere at several heating rates provided information on the thermal decomposition process. The degradation process is modelled with one and two-step mechanisms using the Ozawa–Flynn–Wall iso-conversional method and the GPYRO numerical code which utilizes a genetic algorithm optimization scheme. The estimated activation energy and pre-exponential factor values, especially in the two-step case (77.18 and 104.69 kJ/mol and 2.60 × 106 and 3.19 × 106 min−1 for the first and the second step respectively), recover reasonably well the conversion degree and its derivative. Tests with a cone calorimeter (CC), performed at different incident heat fluxes, provided information on the reaction to fire characteristics of the material and the influence of the heat flux on the combustion process. In general, combustion proceeds in two stages, flaming and smoldering combustion. The CC results assisted by scanning electron microscopy photos provide information on the charring characteristics of the material. The critical heat flux for ignition and the corresponding ignition temperature are estimated, correlating heat fluxes with time to ignition. Thermally thin and thick models are considered, as well as a modified technique bridging the gap between these limit cases and therefore valid for thermally thin and thick but also intermediate conditions (more pertinent in the present case). The results for this latter approach are $$dot{q}^{primeprime}_{ig,cr}$$ ~ 20 kW/m2 and Tig = 469°C, providing also complementing information on thermophysical properties, such as thermal diffusivity, α = 1.23 × 10−7 m2/s, thermal conductivity, k = 0.325 W/(m K) and specific heat capacity, c = 1.330 kJ/(kg K). This work provides information on the reaction to fire characteristics of GFRP, but also on physical and flammability properties in a form suitable to be used in numerical codes, for the prediction of fire and evacuation scenarios. The influence of the reinforcement structure on the fire behaviour of the composite is also illustrated and discussed. 相似文献