Can economic incentives be used to affect marriage behavior and slow the growth of single-parent families? This paper provides new evidence on the effects of welfare benefit incentives on the marital decisions of poor women. Exogenous variation in welfare program parameters arises from a randomized experiment carried out in California. Whereas previous studies have measured women’s responses to...

Pfam is a database of protein families that currently contains 7973 entries (release 18.0). A recent development in Pfam has enabled the grouping of related families into clans. Pfam clans are described in detail, together with the new associated web pages. Improvements to the range of Pfam web tools and the first set of Pfam web services that allow programmatic access to the database and assoc...

A 10.5 kDa non-Pfam hypothetical protein, AF1514, from the hyperthermophilic archaeon Archeoglobus fulgidus has been overexpressed in Escherichia coli, purified and crystallized using the hanging-drop vapour-diffusion method. The crystals diffracted X-rays to 2.09 A resolution and a data set was collected at 100 K using Cu K alpha radiation from a rotating-anode X-ray source. The crystals belon...

BACKGROUND It has become common practice to analyse large scale sequencing data with statistical approaches based around the aggregation of rare variants within the same gene. We applied a novel approach to rare variant analysis by collapsing variants together using protein domain and family coordinates, regarded to be a more discrete definition of a biologically functional unit. METHODS Usin...

Most work by economists has been inconclusive when seeking a consistent relationship between income-support programs (like Aid to Families with Dependent Children (AFDC)) and births to unwed women (or, as the literature traditionally terms it, illegitimacy). But a recent study (Kimenyi and Mbaku (1995)) reports a large, positive and statistically-significant relationship when data are weighted ...

Claims that states which offer generous welfare benefits attract the poor and that some states pay low benefits intending to drive the poor away are neither uncommon nor entirely unfounded. This paper employs a two player (state) generalized game to model states' choice of a benefit level in the Aid to Families with Dependent Children (AFDC) program. Migration by the poor in response to interst...

Aid to families with dependent children (AFDC) began with the Social Security Act, passed 50 years ago to provide what President Franklin D. Roosevelt called a “safeguard against misfortunes which cannot be wholly eliminated in this manmade world of ours. ” In creating the program, originally called aid to dependent children, the .Federal Government for the first time accepted responsibility fo...

This article deals with Part family formation problem which is believed to be moderately complicated to be solved in polynomial time in the vicinity of Group Technology (GT). In the past literature researchers investigated that the part family formation techniques are principally based on production flow analysis (PFA) which usually considers operational requirements, sequences and time. Part C...

This paper presents a new mathematical model for the problem of scheduling part families and jobs within each part family in a flow line manufacturing cell where the setup times for each family are sequence dependent and it is desired to minimize the maximum completion time of the last job on the last machine (makespan) while processing parts (jobs) in each family together. Gaining an optimal s...

Based on a reduction process, we rewrite hypergeometric term as the sum of difference and reduced (the part, in short). We show that when initial has certain kind symmetry, part contains only odd or even powers. As applications, derived two infinite families supercongruences.