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Your search keyword '"Dougherty, S. T."' showing total 19 results
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19 results on '"Dougherty, S. T."'

5. Z2Z4-Additive Cyclic Codes: Kernel and Rank

Author

Borges, J., Dougherty, S. T., Fernández-Córdoba, C., and Ten-Valls, R.

Subjects
Computer Science - Information Theory
Abstract

A Z2Z4-additive code C subset of Z_2^alpha x Z_4^beta is called cyclic if the set of coordinates can be partitioned into two subsets, the set of Z_2 and the set of Z_4 coordinates, such that any cyclic shift of the coordinates of both subsets leaves the code invariant. Let Phi(C) be the binary Gray image of C. We study the rank and the dimension of the kernel of a Z2Z4-additive cyclic code C, that is, the dimensions of the binary linear codes and ker(Phi(C)). We give upper and lower bounds for these parameters. It is known that the codes and ker(Phi(C)) are binary images of Z2Z4-additive codes R(C) and K(C), respectively. Moreover, we show that R(C) and K(C) are also cyclic and we determine the generator polynomials of these codes in terms of the generator polynomials of the code C., Comment: arXiv admin note: text overlap with arXiv:1707.03214

Published
2017

6. Binary Images of Z2Z4-Additive Cyclic Codes

Author

Borges, J., Dougherty, S. T., Fernández-Córdoba, C., and Ten-Valls, R.

Subjects
Computer Science - Information Theory
Abstract

A Z2Z4-additive code C is called cyclic if the set of coordinates can be partitioned into two subsets, the set of Z_2 and the set of Z_4 coordinates, such that any cyclic shift of the coordinates of both subsets leaves the code invariant. We study the binary images of Z2Z4-additive cyclic codes. We determine all Z2Z4-additive cyclic codes with odd beta whose Gray images are linear binary codes.

Published
2017

8. Comprehensive Lifestyle Improvement Program for Prostate Cancer (CLIPP) is associated with improvement in weight and components of metabolic syndrome in men exposed to androgen deprivation therapy for prostate cancer

Author

Algotar, A. M., Hsu, C. H., Chow, H-H., Dougherty, S. T., Babiker, H. M., Marrero, D. G., Abraham, I., Kumar, R., Ligibel, J. A., Courneya, K. S., Smith, T. E., Jones, P. A., Lopez, J. N., Niemiro, G., Ramakumar, S., Hoy, R. D., Mack, C., and Thomson, C. A.

Published
2021
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9. Skew G-codes.

Author

Dougherty, S. T., Şahinkaya, Serap, and Yıldız, Bahattin

Subjects
*FINITE rings, *CYCLIC codes, *FINITE groups, *COMMUTATIVE rings, *GROUP rings
Abstract

We describe skew G-codes, which are codes that are the ideals in a skew group ring, where the ring is a finite commutative Frobenius ring and G is an arbitrary finite group. These codes generalize many of the well-known classes of codes such as cyclic, quasicyclic, constacyclic codes, skew cyclic, skew quasicyclic and skew constacyclic codes. Additionally, using the skew G-matrices, we can generalize almost all the known constructions in the literature for self-dual codes. [ABSTRACT FROM AUTHOR]

Published
2023
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12. Skew G-codes

Author

Dougherty, S. T., primary, Şahinkaya, Serap, additional, and Yıldız, Bahattin, additional

Published
2021
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17. On Z2Z4-additive complementary dual codes and related LCD codes

Author

Benbelkacem, N., Dougherty, S. T., Fernández Córdoba, Cristina, Borges, J. (Joaquim), and Borges, J.

Subjects
Gray map, Algebra and Number Theory, Complementary dual, ZZ-additive codes, Applied Mathematics, LCD codes, Engineering(all), Computer Science::Other, Theoretical Computer Science
Abstract

Linear complementary dual codes were defined by Massey in 1992, and were used to give an optimum linear coding solution for the two user binary adder channel. In this paper, we define the analog of LCD codes over fields in the ambient space with mixed binary and quaternary alphabets. These codes are additive, in the sense that they are additive subgroups, rather than linear as they are not vector spaces over some finite field. We study the structure of these codes and we use the canonical Gray map from this space to the Hamming space to construct binary LCD codes in certain cases. We give examples of such binary LCD codes which are distance-optimal, i.e., they have the largest minimum distance among all binary LCD codes with the same length and dimension.

Published
2020

19. Protocol for a feasibility and early efficacy study of the Comprehensive Lifestyle Improvement Program for Prostate Cancer-2 (CLIPP2).

Author

Algotar AM, Kumar R, Babiker HM, Dougherty ST, Hsu CH, Chow HH, Smith TE, Marrero DG, Courneya KS, Abraham I, Ligibel JA, and Thomson CA

Abstract

Background: Although androgen deprivation therapy (ADT) for prostate cancer demonstrates improved overall and disease-free survival, it is associated with adverse effects such as obesity and metabolic syndrome that increase risk of cardiometabolic disease and diabetes type 2. ADT also leads to fatigue, depression and erectile dysfunction, which reduce quality of life (QoL). Lifestyle modification has shown promise in reducing obesity, metabolic syndrome and diabetes type 2 in other disease types. However, there is a paucity of data regarding the utility of lifestyle modification in men receiving ADT for prostate cancer., Methods: The primary aim of the Comprehensive Lifestyle Improvement Program for Prostate Cancer-2 (CLIPP2) is to test the feasibility of conducting a 24-week lifestyle modification intervention in men on ADT for prostate cancer. Additionally, it will also determine the effect of this intervention on weight loss, cardiometabolic markers (secondary aim and markers of interest: serum glucose, insulin resistance, hemoglobin A1C and lipid panel), and QoL (tertiary aim). The intervention will be delivered weekly via telephone for the first 10 weeks and bi-weekly for the remaining 14 weeks. Questionnaires and serum samples will be collected at baseline, week 12, and week 24. Anthropometric measurements will be collected at baseline, week 6, week 12, week 18 and week 24., Results: We hypothesize that the CLIPP2 intervention will produce a 7% weight loss that will result in improved markers associated with cardiometabolic disease and type 2 diabetes in the study population., Conclusion: Results will provide insight into the role of lifestyle modification in addressing ADT adverse effects as well as provide preliminary data to inform the development of future lifestyle interventions in this area., Trial Registration: NCT04228055 Clinicaltrials. gov., (© 2021 Published by Elsevier Inc.)

Published
2021
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