Results 11 to 20 of about 144,508 (162)
arXiv, 2017 The cyclic codes with parity check polynomial the reciprocal of the characteristic polynomial of the Fibonacci recurrence over a prime finite field are shown to have either one weight or two weights. When these codes are irreducible cyclic we obtain many counterexamples to the conjectural classification of two-weight irreducible cyclic codes of Schmidt
Minjia Shi +2 more
arxiv +4 more sources
Orthopaedic Surgery, Volume 14, Issue 12, Page 3283-3292, December 2022., 2022 The purpose of this study was to assess and compare the therapeutic effects of posterior bilateral pedicle screw fixation and lateral fixation in the extreme lateral interbody fusion (XLIF) in patients with osteopenia or osteoporosis. The bilateral pedicle screw fixation had more advantages in long term stable fixation and was more suitable for the ...
Xianzheng Wang +7 more
wiley +1 more source
The Evolution of the Luminosity Function for Luminous Compact Blue Galaxies to z=1 [PDF]
, 2021 Luminous Compact Blue Galaxies (LCBGs) are compact, star-forming galaxies that are rarely observed in the local universe but abundant at z=1. This increase in LCBG number density over cosmic lookback time roughly follows the increase in the star formation rate density of the universe over the same period.
arxiv +1 more source
Supply chain challenges in the post–Covid Era
Production and Operations Management, Volume 31, Issue 12, Page 4319-4332, December 2022., 2022 Abstract In this paper, we reflect on the supply chain issues and operational challenges that we experienced through the various stages of the Covid‐19 pandemic. We identify some phenomena that were attributable in some way to the pandemic, and apply core principles of operations management, and a simple numerical model, to explain and understand their
Stephen C. Graves +2 more
wiley +1 more source
Managing innovation portfolios: From project selection to portfolio design
Production and Operations Management, Volume 31, Issue 12, Page 4572-4588, December 2022., 2022 Abstract As innovation is critical in driving growth and competitiveness, companies establish innovation (or new product) portfolio processes to select the “right” innovation projects that are allocated the necessary resources. These processes have attracted considerable interest from both academics and practice.
Haijian Si +2 more
wiley +1 more source
Green Bank Telescope observations of low column density HI around NGC 2997 and NGC 6946 [PDF]
, 2013 Observations of ongoing HI accretion in nearby galaxies have only identified about 10% of the needed fuel to sustain star formation in these galaxies. Most of these observations have been conducted using interferometers and may have missed lower column ...
Pisano, D. J.
core +3 more sources
Freeze-drying modeling and monitoring using a new neuro-evolutive technique [PDF]
, 2012 This paper is focused on the design of a black-box model for the process of freeze-drying of pharmaceuticals. A new methodology based on a self-adaptive differential evolution scheme is combined with a back-propagation algorithm, as local search method ...
Barresi +42 more
core +1 more source
Journal of Pediatric and Neonatal Individualized Medicine, 2019 Selected Lectures of the 15th International Workshop on Neonatology and the 40th Congress UMEMPS (Union of Middle-Eastern and Mediterranean Pediatric Societies); Cagliari (Italy); October 24th-26th, 2019 • Children of the Middle-Eastern and Mediter ...
--- Various Authors
doaj +1 more source
Properties and applications of some special integer number sequences [PDF]
, 2020 In this paper, we provide properties and applications of some special integer sequences. We generalize and give some properties of Pisano period. Moreover, we provide a new application in Cryptography and applications of some quaternion elements.
arxiv +1 more source
Adaptive and Robust Fault-Tolerant Tracking Control of Contact force of Pantograph-Catenary for High-Speed Trains [PDF]
, 2015 This paper presents a modified multi-body dynamic model and a linear time-invariant model with actuator faults (loss of effectiveness faults, bias faults) and matched and unmatched uncertainties.
Jiang, Bing +3 more
core +1 more source