Challenges facing high-field tokamaks

Structural Design of High Field Tokamaks

Interest in high field non-superconducting tokamaks was strong after the US left the ITER project at the end of 1999. This class of tokamaks, including Alcator C-Mod, IGNITOR, and FIRE, has many challenging and interesting structural characteristics. Structural behavior of these tokamaks is discussed along with the special structural features employed to sustain the huge loads resulting from th...

Challenges Facing Educational Research

Challenges facing radiology educators.

This article summarizes the current challenges faced by radiology educators. These are discussed under the headings of time available for education, financing education, what and how to teach, student evaluation, support infrastructure, and challenges to leadership.

Challenges Facing Production Grids

Today’s global communities of users expect quality of service from distributed Grid systems equivalent to that their local data centers. This must be coupled to ubiquitous access to the ensemble of processing and storage resources across multiple Grid infrastructures. We are still facing significant challenges in meeting these expectations, especially in the underlying security, a sustainable a...

Challenges facing child protection.

The challenges facing children in the 21st century are immense and will need to be faced if we are to achieve the goal of child protection for all. Three specific constraints on child protection are examined in this article, namely poverty, HIV/AIDS infection, and war. The authors use their experience in Africa to raise issues of resilience and adaptation, dangers to child protection programs, ...