97,636 research outputs found
New Hampshire demographic trends in the twenty-first century
This brief summarizes current population redistribution trends in the Granite State and shows how fertility, mortality, and migration contributed to these trends. According to the 2010 census, New Hampshire gained 80,700 residents (a 6.5 percent increase) between 2000 and 2010, mostly during the earlier years of the decade. Migration contributed 35,400 to the population gain, and the excess of births over deaths accounted for 45,300. Author Ken Johnson reports that New Hampshire currently does not have a large population of seniors, but a rapid increase in the older population is inevitable and coming soon
U.S. Births Remain Low as the Great Recession Wanes; More Than Three Million Fewer Births and Still Counting
In this fact sheet, author Ken Johnson discusses how since the onset of the Great Recession, there have been 3.4 million fewer U.S. births than expected. National Center for Health Statistics data for 2015 show the lowest general fertility rate on record and only 3,978,000 births last year. There were 338,000 fewer births in 2015 than in 2007, just before the Recession began to influence fertility. This decline in births is entirely due to reduced fertility rates. In 2015, the shortfall of births was nearly 600,000, and recent data provide no evidence of any upturn in birth rates. It is too early to determine yet what implications this recession will have for long term U.S. fertility. But whether they are just delayed or foregone, the 3.4 million missing births so far mean there are currently many empty beds in maternity wards, less business for firms in the baby industry, and many empty seats in kindergarten classrooms
Ab initio calculations of nuclear widths via an integral relation
I describe the computation of energy widths of nuclear states using an
integral over the interaction region of ab initio variational Monte Carlo wave
functions, and I present calculated widths for many states. I begin by
presenting relations that connect certain short-range integrals to widths. I
then present predicted widths for 5 <= A <= 9 nuclei, and I compare them
against measured widths. They match the data more closely and with less
ambiguity than estimates based on spectroscopic factors. I consider the
consequences of my results for identification of observed states in ^8B, ^9He,
and ^9Li. I also examine failures of the method and conclude that they
generally involve broad states and variational wave functions that are not
strongly peaked in the interaction region. After examining bound-state overlap
functions computed from a similar integral relation, I conclude that overlap
calculations can diagnose cases in which computed widths should not be trusted.Comment: 26 pages, 9 figures, submitted to Phys. Rev.
Rural America Growing Again Due to Migration Gains
For the first six years of this decade, rural America experienced overall population loss for the first time in history. New Census Bureau estimates suggest that last year overall growth accelerated in nonmetropolitan America where 46.1 million people reside
Deterring a Nuclear Iran: The Devil in the Details
Explores the technical requirements for a deterrence regime against Iran should it acquire a nuclear weapons capability. Considers red lines, treaty arrangements, force deployment and bases, military assistance to Iran's neighbors, and crisis management
New faces at the polls in the New Hampshire presidential primary
New Hampshire prides itself on its first-in-the-nation status, but with changing demographics and significant migration in and out of the state, the winner of the New Hampshire Primary was anyone\u27s guess
Recent nonmetropolitan demographic trends in the Midwest
This research1 examines demographic trends in nonmetropolitan areas of the United States and the Midwest2 since the 1990 census using the federal-state series of county population estimates. Review of such timely information is important because nonmetropolitan demographic trends have been extremely fluid during the past 30 years (Long and DeAre, 1988). Historically, nonmetropolitan demographic change, both in the Midwest and the US, has been dominated by an excess of births over deaths sufficient to offset the net ..
Migration Fuels a Second Year of Higher Population Gain in New Hampshire
In this data snapshot, author Kenneth Johnson reports that the population of New Hampshire grew by 6,700 between July of 2017 and July of 2018 to 1,356,000 according to new Census Bureau estimates. This gain coupled with a population increase of 7,400 last year added 14,100 residents to the state between 2016 and 2018. This gain is 50 percent greater than the increase between 2014 and 2016, though it remains modest compared to gains in the 1970s and 1980s. Migration accounted for nearly all of this growth
New Hampshire Population Grew Last Year, Even Though Deaths Exceeded Births
In this data snapshot, author Kenneth Johnson reports the population of New Hampshire grew by 6,200 to 1,360,000 between July of 2018 and July of 2019 according to new Census Bureau estimates. The state’s population increased even though there were fewer births than deaths in the state last year. Migration from other U.S. destinations accounted for most of the state’s population gain. In a state where deaths now exceed births, migration is critical to New Hampshire’s future
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