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91.
Marko Hölbl Tatjana Welzer Boštjan Brumen 《Journal of Computer and System Sciences》2012,78(1):142-150
Two-party authenticated key agreement protocols using pairings have gained much attention in the cryptographic community. Several protocols of this type where proposed in the past of which many were found to be flawed. This resulted in attacks or the inability to conform to security attributes. In this paper, we propose an efficient identity-based authenticated key agreement protocol employing pairings which employs a variant of a signature scheme and conforms to security attributes. Additionally, existing competitive and the proposed protocol are compared regarding efficiency and security. The criteria for efficiency are defined in this paper, whereas the criteria for security are defined by the fulfilment of security attributes from literature. 相似文献
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94.
Istvan Kucora Pera Paunjoric Jasna Tolmac Marko Vulovic James G. Speight 《Petroleum Science and Technology》2017,35(3):213-221
In the petrochemical industry, an industrial pyrolysis furnace is a complicated piece of equipment that functions as both a reactor and high-pressure steam generator. During service, hard deposits of carbon (coke) build up on the inner wall of the tube, reducing heat transfer and restricting the flow of the hydrocarbon feedstocks. In this paper, an overview of coke formation, the impact of coke formation, and the methods by which coke formation can be prevented, as well as methods that can be successful in decoking of pyrolysis furnaces, is presented. 相似文献
95.
J. Brnic G. Turkalj M. Canadija D. Lanc S. Krscanski 《Mechanics of Time-Dependent Materials》2011,15(4):341-352
In this paper some experimental results and analyses regarding the behavior of AISI 420 martensitic stainless steel under
different environmental conditions are presented. That way, mechanical properties like ultimate tensile strength and 0.2 percent
offset yield strength at lowered and elevated temperatures as well as short-time creep behavior for selected stress levels
at selected elevated temperatures of mentioned material are shown. The temperature effect on mentioned mechanical properties
is also presented. Fracture toughness was calculated on the basis of Charpy impact energy. Experimentally obtained results
can be of importance for structure designers. 相似文献
96.
Influence of cardiac motion on diffusion-weighted magnetic resonance imaging of the liver 总被引:1,自引:1,他引:0
Thomas C. Kwee Taro Takahara Tetsu Niwa Marko K. Ivancevic Gwenael Herigault Marc Van Cauteren Peter R. Luijten 《Magma (New York, N.Y.)》2009,22(5):319-325
Purpose
To assess cardiac motion-induced signal loss in diffusion-weighted magnetic resonance imaging (DWI) of the liver using dynamic DWI. 相似文献97.
Vitoslav Bratuš Franc Kosel Marko Kovač 《Journal of Materials Processing Technology》2010,210(2):396-407
Today engineers involved in the stamping process used for high-volume production of rotor and stator laminations are faced with a great challenge to achieve extremely narrow dimensional and geometrical tolerance on their products. Because materials are produced by different suppliers, adjustments of technological parameters to the emerging differences are required to maintain the high quality of products. An upgraded engineering method was developed in which electrical steel sheet of semi-finish grade was not treated traditionally, but as a 3D body with orthotropic material behaviour. The round profile of the cutting edge was studied from the experimental and numerical point of view. If the completely round punch was used, the profile of the cutting edge appeared as a non-round shape. With additional FEM analyses a new profile of punch was designed as a non-round shape to be able to provide much better circularity. FEM simulation showed that 10 times lower profile deviations were found on the workpiece shaped by the new cutting element profile. 相似文献
98.
Gravure offset printing of polymer inks for conductors 总被引:2,自引:0,他引:2
A gravure offset printing process has been developed for Ag-filled polymer conductor ink. Pad printing and roller type printing have been used. Curing and electrical properties have been studied. A roller type of gravure offset printing has been used to evaluate the printing process and pad printing to print on the non-planar substrates. Based on differential scanning calorimetry (DSC) and resistivity measurements during ink curing, it was found that the ink had an optimum curing temperature of 140 °C. Square resistance of 300 and 150 μm wide lines can be as low as 20 and 28 mΩ/sq., respectively, for 7–8.5 μm thick line. The minimum line width was 70 μm. This minimum line width can be reduced with different ink solvents, but in this case the line thickness suffers and the square resistance increases, respectively. 相似文献
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