Results 21 to 30 of about 357,046 (292)

On the origin of the mitochondrial genetic code: Towards a unified mathematical framework for the management of genetic information [PDF]

open access: yes, 2012
The origin of the genetic code represents one of the most challenging problems in molecular evolution. The genetic code is an important universal feature of extant organisms and indicates a common ancestry of different forms of life on earth.
Diego Luis Gonzalez   +5 more
core   +2 more sources

New Bounds on the Expected Length of Optimal One-to-One Codes [PDF]

open access: yes, 2012
[[abstract]]In this correspondence, we consider one-to-one encodings for a discrete memoryless source, which are "one-shot" encodings associating a distinct codeword with each source symbol.
Cheng, J.;Huang, T.-K.;Weidmann, C
core   +1 more source

Complete Characterizations of Optimal Locally Repairable Codes With Locality 1 and $K-1$

open access: yesIEEE Access, 2019
A locally repairable code (LRC) is a [n, k, d] linear code with length n, dimension k, minimum distance d and locality r, which means that every code symbol can be repaired by at most r other symbols.
Yichong Xia, Bin Chen
doaj   +1 more source

Precoded Sphere Packing Aided Bit-Interleaved Differential Spa ce-Time Coded Modulation Using Iterative Decoding [PDF]

open access: yes, 2008
—In this treatise, we investigate a precoded and sphere packing (SP)-aided bit-interleaved differential space-time coded modulation scheme using iterative decoding. The amalgamated design and interworking of the SP, differential encoding, and iteratively
Alamri, Osamah   +3 more
core   +1 more source

Influence of errors in job codes on job exposure matrix-based exposure assessment in the register-based occupational cohort DOC*X

open access: yesScandinavian Journal of Work, Environment & Health, 2020
OBJECTIVE: Job-exposure matrices (JEM) may be efficient for exposure assessment in occupational epidemiological studies, but they rely on valid job information.
Sesilje Bondo Petersen   +9 more
doaj   +1 more source

Dihedral Group in The Ancient Genetic

open access: yesJurnal Matematika Integratif, 2020
The standard genetic code consist of four nucleotide bases which encode genes to produce amino acids needed by living things. The addition of new base  (Dummy) causes a sequence of bases to become five nucleotide bases called ancient genetic codes.
Isah Aisah, Eddy Djauhari, Asep Singgih
doaj   +1 more source

Mapping Local Codes to Read Codes [PDF]

open access: yes, 2017
Background & Objectives: Legacy laboratory test codes make it difficult to use clinical datasets for meaningful translational research, where populations are followed for disease risk and outcomes over many years.
Doney, Alexander; id_orcid   +8 more
core   +1 more source

Rateless Coding Schemes Using Polar Codes: Truly “No” Rates?

open access: yesIEEE Access, 2020
In this paper, aiming to achieve rate adaptation for the rateless coding (RC) schemes of polar codes, we explore their throughput efficiency and optimize a series of rates that are set in two types of RC schemes.
Hao Liang   +3 more
doaj   +1 more source

Does Gender Impact a Diagnosis of Ankylosing Spondylitis?

open access: yesACR Open Rheumatology, 2022
Objective The study objective was to explore differences in ankylosing spondylitis (AS) diagnosis experiences between men and women by examining the coding of health events over the 2 years preceding AS diagnosis.
Mark C. Hwang   +5 more
doaj   +1 more source

Plasminogen activator inhibitor type 2 contains mRNA instability elements within exon 4 of the coding region. Sequence homology to coding region instability determinants in other mRNAs.

open access: yesThe Journal of biological chemistry, 2001
Plasminogen activator inhibitor type 2 (PAI-2) is a serine protease inhibitor that inhibits urokinase. Constitutive and regulated PAI-2 gene expression involves post-transcriptional events, and an AU-rich mRNA instability motif within the 3'-untranslated region of PAI-2 mRNA is required for this process (Maurer, F., Tierney, M., and Medcalf, R.
M J, Tierney, R L, Medcalf
openaire   +2 more sources

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