به نام خدا
Title: NANOIMPRINTED HOLES TO IMMOBILIZE MICROBES
Authors: T Kano, T Inaba, and N Miki
Abstract: In this paper we demonstrate highly dense immobilization of bacteria into nanoimprinted holes. Nanoimprinting enables micro holes smaller than 2 mm in diameter with a high accuracy, which cannot be patterned using conventional UV photolithography. In our prior work, we developed a microbial reactor immobilizing bacteria into micro holes, which facilitated collection and evaluation of reaction products while the number of bacteria involved in the reaction could be quantified. However, the holes were made by photolithography and the minimum size was limited to be 3 mm in diameter. Large holes allow multiple bacteria to be immobilized in a hole, which resulted in errors in quantification. The number of bacteria immobilized in a nanoimprinted hole was found to have smaller deviation than in photolithographically formed holes. In addition, density of the immobilized bacteria was experimentally found to be largest in case of 2-mm-holes. The proposed processes will be of great help for precise evaluation of bacteria reaction.
Publish Year: 2013
Published in: IEEE-MEMS
موضوع : فناوری نانو (Nanotechnology)
ایران سای – مرحع علمی فنی مهندسی
حامی دانش بومی ایرانیان
به نام خدا
Title: Effect of Higher-Order PSDs on Timing Jitter
Authors: Isamu Wakabayashi , Daisuke Abe, Masatoshi Sano
Abstract: This paper describes the effect of higher-order PSDs at a squarer output on the jitter variance at a timing circuit output. The timing circuit consists of a squarer, a pre-filter, and a PLL arranged in tandem. The transmission schemes are assumed to be PAM, ASK and QAM. Additive white Gaussian noise exists at the receive filter input. The band-limiting scheme is assumed to be of a cosine roll-off. The higher-order PSDs are components of the jitter source PSD at the squarer output. Theoretical calculations show that the SS and SN components of the jitter source PSD can be represented by Oth- and ±2nd-order PSDs. However, based on numerical calculations, the SN component consists of only the Oth-order PSD. This may be due to the effect of the band-limiting scheme assumed herein. The results hold for all of the transmission schemes, SNRs, alphabet sizes, and roll-off factors treated in this paper.
Publish Year: 2013
Published in: ICACT – IEEE
موضوع: الکترونیک
ایران سای – مرجه علمی فنی مهندسی
حامی دانش بومی ایرانیان
به نام خدا
Title: Large nonadiabatic quantum molecular dynamics simulations on parallel computers
Authors: Fuyuki Shimojo , Satoshi Ohmura , Weiwei Mou , Rajiv K Kalia , Aiichiro Nakano , Priya Vashishta
Abstract: Wehave implemented a quantummolecular dynamics simulation incorporating nonadiabatic electronic transitions on massively parallel computers to study photoexcitation dynamics of electrons and ions. The nonadiabatic quantum molecular dynamics (NAQMD) simulation is based on Casida s linear response time-dependent density functional theory to describe electronic excited states and Tully s fewest- switches surface hopping approach to describe nonadiabatic electron ion dynamics. To enable large NAQMD simulations, a series of techniques are employed for efficiently calculating long-range exact exchange correction and excited-state forces. The simulation programis parallelized using hybrid spatial and band decomposition, and is tested for various materials.
Publish Year: 2013
Published in: Computer Physics Communications - Science Direct
موضوع: محاسبات کوانتوم (Quantum Computing )
ایران سای – مرجع علمی فنی مهندسی
حامی دانش بومی ایرانیان
به نام خدا
Title: Molecular solutions of the RSA public-key cryptosystem on a DNA-based computer
Authors: WengLong Chang Kawuu Weicheng Lin JuChin Chen ChihChiang Wang Lai Chin Lu Minyi Guo Michael ShanHui Ho
Abstract: The RSA public-key cryptosystem is an algorithm that converts a plain-text to its corresponding cipher-text, and then converts the cipher-text back into itscorresponding plain-text. In this article, we propose five DNA-based algorithms-parallel adder, parallel subtractor, parallel multiplier, parallel comparator, and parallelmodular arithmetic-that construct molecular solutions for any (plain-text, cipher-text) pair for the RSA public-key cryptosystem.
Publish Year: 2012
Published in: The Journal of Supercomputing - Springer
موضوع: رمزنگاری کلید عمومی (Public Key Cryptography)، محاسبات کوانتوم (Quantum Computing)
ایران سای – مرجع علمی فنی مهندسی
حامی دانش بومی ایرانیان
به نام خدا
Title: Secure E-Commerce Protocol for Purchase of e-Goods - Using Smart Card
Authors: Devane, S.; Chatterjee, M.; Phatak, D.
Abstract: The rapid growth of e-commerce for buying and selling electronic goods or intangible goods has necessitated the need for development of a number of e-commerce protocols, which ensure integrity, confidentiality, atomicity and fair exchange. In this paper we propose an e-commerce protocol for performing business over the Internet. The protocol uses a smart card for ensuring mutual authentication, dispute resolution and fair exchange and reduces reliance on a trusted third party. Atomicity is also maintained in the protocol.
Publish Year: 2007
Published by: IAS – IEEE
موضوع: تجارت الکترونیک (Electronic Commerce)
ایران سای – مرجع علمی فنی مهندسی
حامی دانش بومی ایرانیان