As an instructional tool, graphic organizers (GOs) have been highly recommended and used in contemporary classrooms. Over the past decade, a number of concerns have been raised about claims for the effectiveness of GOs. These concerns involve the inconsistent research results on student improvements, the limitation in generalizability from research studies, and the need for research studies wit...

Effectively planning a large multi-track conference requires an understanding of the preferences and constraints of organizers, authors, and attendees. Traditionally, the onus of scheduling the program falls on a few dedicated organizers. Resolving conflicts becomes difficult due to the size and complexity of the schedule and the lack of insight into community members’ needs and desires. Cobi p...

This report gives account of the seminar on Logic Databases and The Meaning of Change, held at the marvelous conference and research center of Dagstuhl, in the last week of September 1996. The seminar attracted a total of 36 invited researchers in the field, from 14 countries. Each of the participants contributed to the seminar by giving talks, demonstrations and/or participating in lively disc...

Creating a schedule for a large multi-track conference requires considering the preferences and constraints of organizers, authors, and attendees. Traditionally, a few dedicated organizers manage the size and complexity of the schedule with limited information and coverage. Cobi presents an alternative approach to conference scheduling by engaging the entire community to take active roles in th...

How embryos consistently orient asymmetries of the left-right (LR) axis is an intriguing question, as no macroscopic environmental cues reliably distinguish left from right. Especially unclear are the events coordinating LR patterning with the establishment of the dorsoventral (DV) axes and midline determination in early embryos. In frog embryos, consistent physiological and molecular asymmetri...