Default, foreclosure, and strategic renegotiation / 1542

Includes bibliographical references (p. 21-24)

Occupational Gender Segregation and Women's Wages in Canada: An Historical Perspective

We document the evolution of occupational gender segregation and its implications for women's labour market outcomes over the twentieth century. The first half of the century saw a considerable decline in vertical segregation as women moved out of domestic and manufacturing work into clerical work. This created a substantial amount of horizontal segregation that persists to this day. To study the effects of occupational segregation on the gender gap, we introduce a decomposition technique that divides the gap into between-occupation and within-occupation components. Since the 1990s the component attributable to within-occupation wage differentials has become predominant. Nous traçons un portrait de l'évolution de la ségrégation professionnelle selon le sexe au 20ième siècle, et de ses conséquences sur la condition féminine dans le marché du travail. Dans la première partie du 20ième siècle, la ségrégation professionnelle hiérarchique ou verticale a considérablement déclinée alors que les travailleuses quittaient les emplois de domestique et du secteur manufacturier en faveur des emplois de bureau. Ceci créa néanmoins une importante ségrégation professionnelle horizontale qui persiste jusqu'à aujourd'hui. Pour étudier les effets de la ségrégation professionnelle sur l'écart salarial selon le sexe, nous présentons une technique de décomposition qui divise l'écart salarial en deux composantes: l'une due aux différences intra-occupations et l'autre due aux différences inter-occupations. Depuis le début des années 90, la composante intra-occupation est prédominante.Occupational segregation, gender wage gap, pay equity, economic history, Ségrégation professionnelle, équité salariale, écart salarial selon le sexe, histoire économique

Rhythms of social interaction: messaging within a massive online network

We have analyzed the fully-anonymized headers of 362 million messages exchanged by 4.2 million users of Facebook, an online social network of college students, during a 26 month interval. The data reveal a number of strong daily and weekly regularities which provide insights into the time use of college students and their social lives, including seasonal variations. We also examined how factors such as school affiliation and informal online friend lists affect the observed behavior and temporal patterns. Finally, we show that Facebook users appear to be clustered by school with respect to their temporal messaging patterns

Search in Power-Law Networks

Many communication and social networks have power-law link distributions, containing a few nodes which have a very high degree and many with low degree. The high connectivity nodes play the important role of hubs in communication and networking, a fact which can be exploited when designing efficient search algorithms. We introduce a number of local search strategies which utilize high degree nodes in power-law graphs and which have costs which scale sub-linearly with the size of the graph. We also demonstrate the utility of these strategies on the Gnutella peer-to-peer network.Comment: 17 pages, 14 figure