J. Michael Homan, twenty-second editor of the Bulletin.

Precocious dinosaur or preeminent electronic presence?

Toeplitz transforms of Fibonacci sequences

We introduce a matricial Toeplitz transform and prove that the Toeplitz transform of a second order recurrence sequence is another second order recurrence sequence. We investigate the injectivity of this transform and show how this distinguishes the Fibonacci sequence among other recurrence sequences. We then obtain new Fibonacci identities as an application of our transform.

Assessing Practitioners’ and Patients’ Needs Regarding Shared Decision-Making and Decision Aids

       Background: As part of the process of developing a decision aid for carpal tunnel syndrome (CTS) according to the Ottawa Decision Support Framework, we were interested in the level of ‘decisional conflict’ of hand surgeons and patients with CTS. This study addresses the null hypothesis that there is no difference between surgeon and patient decisional conflict with respect to test and tr...

SIAG/OPT Views-and-News 21(2)

Environmental Optimization Oil Spill Response Planning with MINLP Fengqi You and Sven Leyffer . . . . . . . . . . . . . . . . . . . . 1 Bulletin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Comments from the Editor Sven Leyffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Chairman’s Column Michael C. Ferris . . . . . . . . . . ...

Increased Risk of Kidney Disorders in Patients with Coronavirus 2019: A Letter to the Editor

Background and Objectives: Coronavirus 2019 (Covid-19) has become a global disease that can affect various organs of the human body. Kidney disorders are the most common disorders in patients with Covid-19. Kidney involvement manifests as proteinuria and acute kidney injury (AKI). This virus can cause acute tubular necrosis, protein leakage in the Bowman's capsule, glomerulopathy, and mitochond...