# Articles from the Institute Letter

Additional articles from new and past issues of the Institute Letter will continue to be posted over time and as they become available.

## Economic, Political, and Social Outcomes of Community-Driven Development

### by Ruben Enikolopov

How has Afghanistan's largest development program affected democratic processes, counterinsurgency, and the position of women?

Each year, billions of dollars in foreign aid are directed to the developing world. Assistance comes in a variety of forms, but one particular method of delivery—community-driven development (CDD)—which came about as a response to large-scale top-down initiatives that were criticized for failing to empower aid recipients, has become especially popular. This approach emphasizes involvement of local communities in planning decisions and controlling investment of resources. Beyond benefiting communities with their involvement in planning decisions and the investment of resources, CDD is intended to encourage sustained participation through local representative institutions, thus improving social capital and local governance.

The CDD approach is particularly popular in the context of weak or fragile states, in which government bureaucracy often fails to provide public goods and services. From 1996 to 2003, World Bank lending alone for such projects rose from $325 million to$2 billion per year, reaching $30 billion in total as of 2012, toward the support of four hundred programs with CDD components in ninety-four countries. Yet, rigorous empirical evidence of CDD value remains limited. My work with Andrew Beath from the World Bank and Fotini Christia from the Massachusetts Institute of Technology contributes to understanding the effectiveness of this approach by assessing the impact of a large-scale CDD program in Afghanistan known as the National Solidarity Program (NSP). NSP is the country’s largest development program, implemented in over thirty-two thousand out of Afghanistan’s thirty-nine thousand villages at a cost of over$1 billion. Funded by a consortium of international donors and administered by the Afghan national government, its aim is to both improve the access of rural villagers to critical services and to create a structure for village governance centered on democratic processes and female participation.

## Painting Time: Impressionism and the Modern Temporal Order

### By André Dombrowski

How quickening brushwork arose from the industrialization of time

It is often said that impressionism sought to make represented time and the time of representation coterminous. With its seemingly quick and unpolished touch, it gave the modern cultures of speed their first appropriately modernist forms. But art historians have rarely if ever interrogated the concrete histories and technologies of time (and time keeping) that underwrote this seismic stylistic shift or to inquire into the links between quickening brushwork and the nineteenth century’s industrialization of time. This is especially remarkable given the fact that two key scientific events in the measuring of modern time—the advent of quantifiable nervous reaction time in France around 1865 and the standardization of universal time in 1884—overlap so precisely with the history of impressionism, its rise in the mid-1860s, and the turn toward postimpressionism around the mid-1880s.

## Understanding Networks and Defining Freedom

From capturing interactions and inferring the structure of data to determining the infringement of freedom

In November, the Association of Members of the Institute for Advanced Study (AMIAS) sponsored two lectures by Jennifer Chayes, Member (1994–95, 97) in the School of Mathematics, and Quentin Skinner, Member in the Schools of Historical Studies (1974–75) and Social Science (1976–79). All current and former Institute Members and Visitors are members of AMIAS, which includes some 6,000 scholars in more than fifty countries. To learn more about the organization, upcoming events, and opportunities to support the mission of the Institute, please visit www.ias.edu/people/amias/. Following are brief summaries of the lectures by Chayes and Skinner; full videos are available at http://video.ias.edu/2013-amias-chayes and http://video.ias.edu/2013-amias-skinner/.

AGE OF NETWORKS

Jennifer Chayes, Distinguished Scientist and Managing Director of Microsoft Research New England and New York City:

Everywhere we turn, networks can be used to describe relevant interactions. In the high-tech world, we see the internet, the world wide web, mobile phone networks, and online social networks. In economics, we are increasingly experiencing both the positive and negative effects of a globally networked economy. In epidemiology, we find disease spreading over ever-growing social networks, complicated by mutation of the disease agents. In problems of world health, distribution of limited resources, such as water resources, quickly becomes a problem of finding the optimal network for resource allocation. In biomedical research, we are beginning to understand the structure of gene-regulatory networks, with the prospect of using this knowledge to manage many human diseases.

## How Open-Source Ideas Can Help Us Study Exoplanets

### By Hanno Rein

Pluto, the ninth planet in our solar system1 was discovered in 1930, the same year the Institute was founded. While the Institute hosted more than five thousand members in the following sixty-five years, not a single new planet was discovered during the same time.

Finally, in 1995, astronomers spotted an object they called 51 Pegasi b. It was the first discovery of a planet in over half a century. Not only that, it was also the first planet around a Sun-like star outside our own solar system. We now call these planets extrasolar planets, or in short, exoplanets.

As it turns out, 51 Pegasi b is a pretty weird object. It is almost as massive as Jupiter, but it orbits its host star in only four days. Jupiter, as a comparison, needs twelve years to go around the Sun once. Because 51 Pegasi b is very close to the star, its equilibrium temperature is very high. These types of planets are often referred to as “hot Jupiters.”

Since the first exoplanet was discovered, the technology has improved dramatically, and worldwide efforts by astronomers to detect exoplanets now yield a large number of planet detections each year. In 2011, 189 planets were discovered, approximately the number of visiting Members at the Institute every year. In 2012, 130 new planets were found. As of May 20 of this year, the total number of confirmed exoplanets was 892 in 691 different planetary systems.