http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Indiscelio: A new genus of Scelionidae (Platygastroidea) from India
Veenakumari Kamalanathan,Ovidiu Alin Popovici,Elijah J. Talamas,Prashanth Mohanraj 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.2
A new scelionine genus Indiscelio Veenakumari, Popovici and Talamas is described from India with type species Indiscelio aulon Veenakumari, Popovici and Talamas. Both sexes are described and imaged. Affinities with morphologically similar genera are discussed.
Efficient VLSI architecture for interpolation decoding of hermitian codes
Srivastava, Shraddha,Kwankyu Lee,Popovici, Emanuel IET 2014 IET COMMUNICATIONS Vol.8 No.5
<P>A fast, area efficient very large scale integration (VLSI) architecture is proposed for a unique decoding algorithm of Hermitian codes which was presented recently by Lee and O'Sullivan from an interpolation perspective. The algorithm iteratively computes the sent message through a majority voting procedure by using the Gröbner bases of interpolation modules. The algorithm has a regular structure which makes it suitable for VLSI implementation. The circuitry is simplified as the decoding algorithm directly gives the message word at the end of the decoding algorithm without separate steps like Chien search and Forney's formula. In terms of hardware requirements, for the widely used high rate Hermitian codes, the Lee-O'Sullivan algorithm is <I>q</I> times faster than Kötters algorithm with the same space complexity of <I>O</I>(<I>q</I><SUP>4</SUP>). Further speed improvements can be achieved by combining the main idea of Guruswami list decoding with the Lee-O'Sullivan algorithm. In terms of hardware, the addition of this concept, will further reduce the running time of the algorithm and make the circuitry about two times faster than the original Lee-O'Sullivan algorithm. The implementation results for both the Köetter and the Lee-O'Sullivan algorithms on Xilinx Virtex-5 shows that the proposed decoder can be operated at higher clock frequency with almost same area complexity.</P>
Future of dynamic random-access memory as main memory
Kim, Seong Keun,Popovici, Mihaela Cambridge University Press (Materials Research Soc 2018 MRS bulletin Vol.43 No.5
<▼1><B>Abstract</B><P/></▼1><▼2><P>Dynamic random-access memory (DRAM) is the main memory in most current computers. The excellent scalability of DRAM has significantly contributed to the development of modern computers. However, DRAM technology now faces critical challenges associated with further scaling toward the ∼10-nm technology node. This scaling will likely end soon because of the inherent limitations of charge-based memory. Much effort has been dedicated to delaying this. Novel cell architectures have been designed to reduce the cell area, and new materials and process technologies have been extensively investigated, especially for dielectrics and electrodes related to charge storage. In this article, the current issues, recent progress in and the future of DRAM materials, and fabrication technologies are discussed.</P></▼2>
Phase growth control in low temperature PLD Co:TiO2 films by pressure
S. Rout,N. Popovici,S. Dalui,M.L. Paramês,R.C. da Silva,A.J. Silvestre,O. Conde 한국물리학회 2013 Current Applied Physics Vol.13 No.4
This paper reports on the structural and optical properties of Co-doped TiO2 thin films grown onto (0001)Al2O3 substrates by non-reactive pulsed laser deposition (PLD) using argon as buffer gas. It is shown that by keeping constant the substrate temperature at as low as 310 C and varying only the background gas pressure between 7 Pa and 70 Pa, it is possible to grow either epitaxial rutile or pure anatase thin films, as well as films with a mixture of both polymorphs. The optical band gaps of the films are red shifted in comparison with the values usually reported for undoped TiO2, which is consistent with n-type doping of the TiO2 matrix. Such band gap red shift brings the absorption edge of the Codoped TiO2 films into the visible region, which might favour their photocatalytic activity. Furthermore,the band gap red shift depends on the films’ phase composition, increasing with the increase of the Urbach energy for increasing rutile content.
Nazarov, Mihail,Tsukerblat, Boris,Byeon, Clare Chisu,Arellano, Ivan,Popovici, Elisabeth-Jeanne,Noh, Do Young The Optical Society 2009 Applied Optics Vol.48 No.1
<P>The terbium-activated yttrium tantalite (YTaO(4):Tb(3+)) phosphor is of great interest due to the interesting spectroscopic properties of rare earth ions in crystals and also practical use in x-ray imaging. Using the group-theoretical approach, we analyze the selection rules for the transition between Stark components of Tb(3+) in symmetry of the actual crystal field and the polarization for the allowed transitions. The luminescence upon UV, vacuum-ultraviolet (VUV), and x-ray excitation is presented and discussed. The YTaO(4):Tb(3+) phosphors are found to be efficient VUV-excited luminescent materials that could be used not only in x-ray intensifying screens, but also in mercury-free fluorescent lamps or plasma display panels.</P>
Distance Education in Soft-Switching Inverters
Lascu, Dan,Bauer, Pavol,Babaita, Mircea,Lascu, Mihaela,Popescu, Viorel,Popovici, Adrian,Negoitescu, Dan The Korean Institute of Power Electronics 2010 JOURNAL OF POWER ELECTRONICS Vol.10 No.6
The paper describes aspects regarding an E-learning approach of resonant ac inverters. The learning process is based on "Learning by Doing" paradigm supported by several learning tools: electronic course materials, interactive simulation, laboratory plants and real experiments accessed by Web Publishing Tools under LabVIEW. Built on LabVIEW and accompanied by a robust, flexible and versatile hardware, the experiment allows a comprehensive study by remote controlling and performing real measurements on the inverters. The study is offered in a gradual manner, according to the Leonardo da Vinci project EDIPE ($\b{E}$-learning $\b{D}$istance $\b{I}$nteractive $\b{P}$ractical $\b{E}$ducation) philosophy: theoretical aspects followed by simulations, while in the end the real experiments are investigated. Studying and experimenting access is opened for 24 hours a day, 7 days a week under the Moodle booking system.
Distance Education in Soft-Switching Inverters
Dan Lascu,Pavol Bauer,Mircea B?b?it¸?,Mihaela Lascu,Viorel Popescu,Adrian Popovici,Dan Negoi?escu 전력전자학회 2010 JOURNAL OF POWER ELECTRONICS Vol.10 No.6
The paper describes aspects regarding an E-learning approach of resonant ac inverters. The learning process is based on “Learning by Doing” paradigm supported by several learning tools: electronic course materials, interactive simulation, laboratory plants and real experiments accessed by Web Publishing Tools under LabVIEW. Built on LabVIEW and accompanied by a robust, flexible and versatile hardware, the experiment allows a comprehensive study by remote controlling and performing real measurements on the inverters. The study is offered in a gradual manner, according to the Leonardo da Vinci project EDIPE (E-learning Distance Interactive Practical Education) philosophy: theoretical aspects followed by simulations, while in the end the real experiments are investigated. Studying and experimenting access is opened for 24 hours a day, 7 days a week under the Moodle booking system.