نتایج جستجو برای: signature sequence

تعداد نتایج: 468007  

Journal: :Applied Water Science 2022

Abstract Investigating the interaction of water resources such as rainfall, river flow and groundwater level can be useful to know behavior balance in a basin. In this study, using deficiency signatures for 60-day duration, accuracy vine copulas was investigated by joint frequency analysis. First, while investigating correlation pair-variables, tree sequences C-, D- R-vine were investigated. Th...

Journal: :International journal of oncology 2007
Niels Halama Silke A Grauling-Halama Andreas Beder Dirk Jäger

Sequence analysis of protein-coding human genes in human breast and colorectal cancer recently identified the KIAA1632 gene as a potential contributor to neoplastic processes in breast cancer. In the present study, we characterized the KIAA1632 gene by computational methods: detailed investigation of the genomic structure, protein prediction, identification of orthologs in other species and phy...

1999
Tan F. Wong Tat M. Lok

In this paper, a new spreading scheme, which consists of two stages of spreading, is considered for DS-CDMA systems. The data of a user is spread first with a long signature sequence and then with a short signature sequence. The scheme combines the advantages of the two types of spreading techniques and allows us to suppress MAI by performing both beamforming and multiuser detection efficiently...

Journal: :IEICE Transactions 2011
Goichiro Hanaoka Shoichi Hirose Atsuko Miyaji Kunihiko Miyazaki Bagus Santoso Peng Yang

A sanitizable signature scheme is a signature scheme which, after the signer generates a valid signature of a message, allows a specific entity (sanitizer) to modify the message for hiding several parts. Existing sanitizable signature schemes require the message to be divided into pre-defined blocks before signing so that each block can be sanitized independently. However, there are cases where...

2000
Sennur Ulukus Roy D Yates

In this paper we characterize the user capacity i e the maximum number of supportable users at a common SIR target level for a xed processing gain of a single cell symbol asynchronous CDMA system Based on the delay pro le of the users we identify a class of optimum signature sequences that achieve a lower bound on the total squared asynchronous correlation TSAC among the users When the users si...

Journal: :BMC Clinical Pathology 2009
Sin Hang Lee Veronica S Vigliotti Jessica S Vigliotti Suri Pappu

BACKGROUND Screening with combined cytologic and HPV testing has led to the highest number of excessive colposcopic referrals due to high false positive rates of the current HPV testing in the USA. How best to capitalize on the enhanced sensitivity of HPV DNA testing while minimizing false-positive results from its lower specificity is an important task for the clinical pathologists. METHODS ...

2003
Onur Kaya Sennur Ulukus

We solve for the optimum signature sequence and power allocation policies that maximize the information theoretic ergodic sum capacity of a code division multiple access (CDMA) system subject to fading. We show that at most N users may transmit at any given channel state, where N is the processing gain; and those users who are transmitting should be assigned orthogonal signature sequences. We a...

Journal: :IEEE Journal on Selected Areas in Communications 2002
Gowri Rajappan Michael L. Honig

Joint transmitter-receiver adaptation is studied for the reverse link of a direct sequence-code division multiple access system with short signature sequences. The signature for a particular user is computed at the receiver and transmitted back to the transmitter via a feedback channel. A reduced-rank transmitter adaptation scheme is presented in which the signature is constrained to lie in a l...

Journal: :Bioinformatics 2002
Zhengdong Zhang Richard C. Willson George E. Fox

MOTIVATION The phylogenetic structure of the bacterial world has been intensively studied by comparing sequences of 16S ribosomal RNA (16S rRNA). This database of sequences is now widely used to design probes for the detection of specific bacteria or groups of bacteria one at a time. The success of such methods reflects the fact that there are local sequence segments that are highly characteris...

1999
Ron G. van Schyndel Andrew Z. Tirkel Imants D. Svalbe

Many types of pseudo-random signals have been used to embed signatures as watermarks, with spread spectrum signal techniques used to recover the signature from the encrypted data. Legendre sequences are a suitable candidate for signature encryption as they exhibit ‘perfect’ two level auto-correlation. Additionally, Legendre sequences have the unusual and interesting property of invariance under...

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