28,055 research outputs found
Workforce Development and the Disadvantaged: New Directions for 2009 and Beyond
Assesses the 1998 Workforce Investment Act's successes and limitations. Outlines the changes needed, such as increasing funding and consolidating programs, for a more effective public workforce training system, especially for the young and hard-to-employ
From Sakata Model to Goldberg-Ne'eman Quarks and Nambu QCD Phenomenology and "Right" and "Wrong" experiments
The basic theoretical milestones were the Sakata SU(3) symmetry, the
Goldberg-Ne'eman composite model with SU(3) triplets having baryon number (1/3)
and the Nambu color gauge Lagrangian. The transition was led in right and wrong
directions by experiments interpreted by phenomenology. A "good" experiment on
annihilation at rest showed that the Sakata model predictions
disagreed with experiment. A "bad" experiment prevented the use of the
Goldberg-Ne'eman triplet model to predict the existence and masses of the of
the and . More "good" experiments revealed the existence and
mass of the and the and the absence of positive strangeness
baryon resonances, thus confirming the "tenfold way". Further "good
experiments" revealed the existence of the vector meson nonet, SU(3) breaking
with singlet-octet mixing and the suppression of the decay.
These led to the quark triplet model. The paradox of peculiar statistics then
arose as the and contained three identical spin-1/2
fermions coupled symmetrically to spin (3/2). This led to color and the Nambu
QCD. The book "Lie Groups for Pedestrians" used the Sakata model with the name
"sakaton" for the triplet to teach the algebra of SU(3) to particle
physicists in the U.S. and Europe who knew no group theory. The Sakata model
had a renaissance in hypernuclear physics in the 1970's.Comment: 8 page
Reconnecting Young Black Men: What Policies Would Help?
The term "disconnected youth" refers to young people who have been out of school and out of work for considerable periods of time – like a year or more. They are not temporarily "idle" but are fully disconnected from the mainstream worlds of schooling and work. They may be incarcerated or on parole or probation; they might be aging out of foster care or still attached to their nuclear families. But, overwhelmingly, they come from low-income families and often grow up in poor and relatively segregated neighborhoods. Of all racial and gender groups, young black men are by far the most likely to become "disconnected" from school and work. In the year 2000 – when the labor market was very tight – over 17 percent of all young black men between the ages of 16 and 24 were disconnected, while the comparable percentages for other race/gender groups were much lower. Indeed, this figure implies that one out of every six young black men was disconnected from both school and work at that time
- …