4,884 research outputs found
THE CAVES Project - Collaborative Analysis Versioning Environment System; THE CODESH Project - Collaborative Development Shell
A key feature of collaboration in science and software development is to have
a {\em log} of what and how is being done - for private use and reuse and for
sharing selected parts with collaborators, which most often today are
distributed geographically on an ever larger scale. Even better if this log is
{\em automatic}, created on the fly while a scientist or software developer is
working in a habitual way, without the need for extra efforts. The {\tt CAVES}
and {\tt CODESH} projects address this problem in a novel way, building on the
concepts of {\em virtual state} and {\em virtual transition} to provide an
automatic persistent logbook for sessions of data analysis or software
development in a collaborating group. A repository of sessions can be
configured dynamically to record and make available the knowledge accumulated
in the course of a scientific or software endeavor. Access can be controlled to
define logbooks of private sessions and sessions shared within or between
collaborating groups.Comment: 4 pages, presented at the Meeting of the Division of Particles and
Fields of the APS, Riverside, USA, August 200
Contractual savings in countries with a small financial sector
Countries with small financial systems are generally small economies with a reduced dimension of institutional relationships, a greater concentration of wealth, and a relatively less independent civil service. These characteristics facilitate concentration of functions and, more generally, weak governance. Only small economies with a relatively high level of per capita income, minimum core of sound banks and insurance companies, sound and credible macroeconomic policies, and open capital accounts can benefit from the development of contractual savings. This can increase the options to obtain sound coverage against contingencies, increase the supply of long term savings, promote financial deepening, and improve financial risk management.Payment Systems&Infrastructure,Environmental Economics&Policies,Banks&Banking Reform,Economic Theory&Research,Insurance&Risk Mitigation,Economic Theory&Research,Banks&Banking Reform,Insurance&Risk Mitigation,Environmental Economics&Policies,Insurance Law
Instructor perspectives on iteration during upper-division optics lab activities
Although developing proficiency with modeling is a nationally endorsed
learning outcome for upper-division undergraduate physics lab courses, no
corresponding research-based assessments exist. Our longterm goal is to develop
assessments of students' modeling ability that are relevant across multiple
upper-division lab contexts. To this end, we interviewed 19 instructors from 16
institutions about optics lab activities that incorporate photodiodes.
Interviews focused on how those activities were designed to engage students in
some aspects of modeling. We find that, according to many interviewees,
iteration is an important aspect of modeling. In addition, interviewees
described four distinct types of iteration: revising apparatuses, revising
models, revising data-taking procedures, and repeating data collection using
existing apparatuses and procedures. We provide examples of each type of
iteration, and discuss implications for the development of future modeling
assessments.Comment: 4 pages, 1 figure; under revie
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