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Spin waves in circular soft magnetic dots at the crossover between vortex and single domain state
Aliev, Farkhad G.,Sierra, Juan F.,Awad, Ahmad A.,Kakazei, Gleb N.,Han, Dong-Soo,Kim, Sang-Koog,Metlushko, Vitali,Ilic, Bojan,Guslienko, Konstantin Y. American Physical Society 2009 Physical review. B, Condensed matter and materials Vol.79 No.17
Alternative Nanostructures for Thermophones
Aliev, Ali E.,Mayo, Nathanael K.,Jung de Andrade, Monica,Robles, Raquel O.,Fang, Shaoli,Baughman, Ray H.,Zhang, Mei,Chen, Yongsheng,Lee, Jae Ah,Kim, Seon Jeong American Chemical Society 2015 ACS NANO Vol.9 No.5
<P>Thermophones are highly promising for applications such as high-power SONAR arrays, flexible loudspeakers, and noise cancellation devices. So far, freestanding carbon nanotube aerogel sheets provide the most attractive performance as a thermoacoustic heat source. However, the limited accessibility of large-size freestanding carbon nanotube aerogel sheets and other even more exotic materials recently investigated hampers the field. We describe alternative materials for a thermoacoustic heat source with high-energy conversion efficiency, additional functionalities, environmentally friendly, and cost-effective production technologies. We discuss the thermoacoustic performance of alternative nanostructured materials and compare their spectral and power dependencies of sound pressure in air. We demonstrate that the heat capacity of aerogel-like nanostructures can be extracted by a thorough analysis of the sound pressure spectra. The study presented here focuses on engineering thermal gradients in the vicinity of nanostructures and subsequent heat dissipation processes from the interior of encapsulated thermoacoustic projectors. Applications of thermoacoustic projectors for high-power SONAR arrays, sound cancellation, and optimal thermal design, regarding enhanced energy conversion efficiency, are discussed.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2015/ancac3.2015.9.issue-5/nn507117a/production/images/medium/nn-2014-07117a_0014.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn507117a'>ACS Electronic Supporting Info</A></P>
Banking System of Uzbekistan: Current State and Development Prospects
Aziz Aliev,Marat L. Tursunkhodjaev KINFORMS 2013 Management Review Vol.8 No.1
In the article is considered the history of creation of a banking system of independent Uzbekistan, a way of its formation and a problem which the banking system faced. Besides it is told about successes, which were reached by a financial system of the republic and ways of the solution of the problems existing in the banking sector of the country are offered Categories and Subject Descriptors: A.0 [Conference proceedings]General Terms: Economics, Reliability, Experimentation, Security, Human Factors, Standardization, Languages, Theory, Legal Aspects, Verification.
Parallel Architecture of Concurrent ESP Engines for High-speed IPSec Routers
Saad Arslan,Hayotjan Aliev,HyungWon Kim 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.11
Most encryption algorithms used in IPSec ESP have block dependance that restricts the encryption of incoming packet blocks in a pipeline fashion. To overcome this, the use of multiple ESP engines is employed in this paper. Thus, multiple packets are processed and encrypted in parallel. Also, the implemented IPSec engine incorporates a CAM based search engine as Security Association Database (SAD). The search engine provides three interfaces for searching, updating and creating entries. The design is verified using simulations and FPGA implementation at 100 MHz clock. Using four ESP engines, a throughput of 3.12 Gpbs is obtained. The measurements show almost linear increase in throughput with the increase in number of ESP blocks.