Notes on Automating Stem and Leaf Displays

The stem-and-leaf display is a natural semi-graphic technique to include in statistical computing systems. This paper discusses the choices involved in implementing both automated and flexible versions of the display, develops an algorithm for the automated version, examines various implementation considerations, and presents a set of semi-portable FORTRAN subroutines for producing stem-and-leaf displays.

Who students interact with? A social network analysis perspective on the use of Twitter in language learning

This paper reports student interaction patterns and self-reported results of using Twitter microblogging environment. The study employs longitudinal probabilistic social network analysis (SNA) to identify the patterns and trends of network dynamics. It is building on earlier works that explore associations of student achievement records with the observed network measures. It integrates gender as an additional variable and reports some relation with interaction patterns. Additionally, the paper reports the results of a questionnaire that enables further discussion on the communication patterns

Transformative Learning: Expanding Stories of Ourselves in Relationship with Stories of “Others” in Dialogue

Transformative learning has developed over the last 25 years into a leading theory of adult learning. This paper describes what we learned from an appreciative cooperative inquiry of people’s experience in groups exploring faith, race and gender diversity. The inquiry itself created transformative dialogic moments. Transformational learning is framed from a relational perspective

On the existence of self-similar spherically symmetric wave maps coupled to gravity

We present a detailed analytical study of spherically symmetric self-similar solutions in the SU(2) sigma model coupled to gravity. Using a shooting argument we prove that there is a countable family of solutions which are analytic inside the past self-similarity horizon. In addition, we show that for sufficiently small values of the coupling constant these solutions possess a regular future self-similarity horizon and thus are examples of naked singularities. One of the solutions constructed here has been recently found as the critical solution at the threshold of black hole formation.Comment: 15 pages, LaTe

Profound Simplicity: Lessons Learned from Ed Schein on Rituals That Sustain and Nurture Relationships

As I attempt to digest Ed Schein\u27s recent passing, I am present to the friendship I was honored to develop with him over the past 12 years and the voluminous lessons I learned. Like so many, my career was shaped by Ed Schein\u27s scholarship. And yet, it was in our personal, unstructured conversations that I was most impacted by who he was, and the values and principles by which he lived. Our conversations centered on what creates, sustains and nurtures relationships all while we were doing so