How To Be Generous Cheaply

How to go Viral: Cheaply and Quickly

Given a social network represented by a graph G, we consider the problem of finding a bounded cardinality set of nodes S with the property that the influence spreading from S in G is as large as possible. The dynamics that govern the spread of influence is the following: initially only elements in S are influenced; subsequently at each round, the set of influenced elements is augmented by all n...

Cutting corners cheaply, or how to remove Steiner points

Our main result is that the Steiner point removal (SPR) problem can always be solved with polylogarithmic distortion, which answers in the affirmative a question posed by Chan, Xia, Konjevod, and Richa in 2006. Specifically, we prove that for every edge-weighted graph G = (V, E,w) and a subset of terminals T ⊆ V , there is a graph G′ = (T, E′, w′) that is isomorphic to a minor of G such that fo...

A call to action: maintain your happiness, be generous!

How can Alzheimer's Patients be Helped?

پرستاری از بیمار مبتلا به بیماری آلزایمر چندان ساده نیست. حتی اگر از این امر که اختلال رفتاری فرد نشانه ای از بیماری اوست، آگاه باشید، اکثر مواقع نمی دانید که چگونه باید با او رفتار کنید. در این مقاله روشهای مناسبی ارائه گردیده تا خانواده بیمار بتواند با ۱۰ اختلال رفتاری شایع در بیماران مبتلا بدون احساس ناامیدی و خشم سازگاری یابند. 

How the WTO Could Be Improved

AbstractThis paper examines the impasse in the current Doha Development Round negotiations andasks how the rules of the WTO could be changed to facilitate multilateral negotiations andto increase the welfare of the Member countries. It considers possible changes to the methodof negotiation. As examples of rules which are outdated, it considers the rules relating toregional trade agreements and ...