Now we must work even harder

We Can and Must Understand Computers NOW

From the endlessly quotable Ted Nelson—whose neologisms pepper the language we use to understand the present, from “hypertext” to “visualization”—perhaps no phrase is better known than, “You Can and Must Understand Computers NOW.” It was emblazoned across the Computer Lib side of his 1974 Computer Lib/Dream Machines ( CL/DM ), the most infl uential book in the history of computational media. 1 ...

We must--and we can--do better.

Adhesive small bowel obstruction: where do we stand now?

Adhesive small bowel obstruction (ASBO) is one of the most frequently encountered disorders in Emergency Surgery Departments worldwide without negligible hospital admission rates and social costs (1,2). Notwithstanding significant improvements in techniques and materials, intra-abdominal adhesions following abdominal surgery still represent a major unsolved and debated issue harbouring challeng...

The Battle Against COVID-19: Where Do We Stand Now?

Detecting communities is Hard (And Counting Them is Even Harder)

We consider the algorithmic problem of community detection in networks. Given an undirected friendship graph G = (V, E), a subset S ⊆ V is an (α, β)-community if: • Every member of the community is friends with an α-fraction of the community; • Every non-member is friends with at most a β-fraction of the community. Arora et al [AGSS12] gave a quasi-polynomial time algorithm for enumerating all ...