The Inclusive-Exclusive Connection and the Neutron Negative Central Charge Density

We find an interpretation of the recent finding that the central charge density of the neutron is negative by using models of generalized parton distributions at zero skewness to relate the behavior of deep inelastic scattering quark distributions, evaluated at large values of Bjorken x, to the transverse charge density evaluated at small distances. The key physical input of these models is the Drell-Yan-West relation We find that the d quarks dominate the neutron structure function for large values of Bjorken x, where the large longitudinal momentum of the struck quark has a significant impact on determining the center-of-momentum of the system, and thus the "center" of the nucleon in the transverse position plane.Comment: 17 pages, 8 figures. Text of an invited talk presented by G. A. Miller at the 2008 Division of Nuclear Physics Meeting in Oakland. Prepared for Int. Journ. Mod. Phys.

"Steady and Unaccusing": An Interview with Sterling A. Brown

This is the publisher's version, also available electronically from On author's personal website, departmental website or institutional repository. On a non-profit server. Publisher copyright and source must be acknowledged. In open access repositories, such as PubMed Central if required by law. Publisher's version/PDF may be used. Reviewed on 03/02/14.Since the early 1980s a series of symposia, public and academic awards, and other recognitions have testified to continuing popular and scholarly interest in Sterling A. Brown, poet, literary critic, teacher, anthologist, and raconteur. The Collected Poems of Sterling A. Brown (Harper & Row), for example, received the Lenore Marshall Poetry Prize for 1980 from Saturday Review. The Modern Language Association, at its December 1981 meeting, paid tribute to Brown's many years of distinguished service as a man of letters. A Black World special issue (September 1970) and Michael Harper and Robert Stepto's Chant of Saints: A Gathering of Afro-American Literature, Art, and Scholarship (1979) became the first two of many anthologies, critical studies, and journal special issues dedicated to him, for his enduring poetic innovations and his pioneering cultural criticism. At Howard University, on February 14, 1997, a symposium assessed the extent to which Brown's thinking reflected and influenced African-American and American views on culture and literature. His sensitive creative work and astute analyses are captured in four published collections of poetry, six critical studies and anthologies, and over forty essays and speeches, together with the regular book review column he wrote in the early issues of Opportunity: A Journal of Negro Life. The following interview--conducted August 2, 1980, but unpublished until now--was one he hoped personally to extend and revise. Nevertheless it offers in retrospect, we think, more testimony that Sterling A. Brown is a presence who remains, in the words from one of his favorite poems, "steady and unaccusing.

Functional requirements document for the Earth Observing System Data and Information System (EOSDIS) Scientific Computing Facilities (SCF) of the NASA/MSFC Earth Science and Applications Division, 1992

Five scientists at MSFC/ESAD have EOS SCF investigator status. Each SCF has unique tasks which require the establishment of a computing facility dedicated to accomplishing those tasks. A SCF Working Group was established at ESAD with the charter of defining the computing requirements of the individual SCFs and recommending options for meeting these requirements. The primary goal of the working group was to determine which computing needs can be satisfied using either shared resources or separate but compatible resources, and which needs require unique individual resources. The requirements investigated included CPU-intensive vector and scalar processing, visualization, data storage, connectivity, and I/O peripherals. A review of computer industry directions and a market survey of computing hardware provided information regarding important industry standards and candidate computing platforms. It was determined that the total SCF computing requirements might be most effectively met using a hierarchy consisting of shared and individual resources. This hierarchy is composed of five major system types: (1) a supercomputer class vector processor; (2) a high-end scalar multiprocessor workstation; (3) a file server; (4) a few medium- to high-end visualization workstations; and (5) several low- to medium-range personal graphics workstations. Specific recommendations for meeting the needs of each of these types are presented

Estimating the Long-term Contributions of Small Buisness Marketing Expenditures

While small business owners and managers typically recognize the long-term benefits of many types of capital expenditures, the potential long-term benefits of marketing expenditures are frequently overlooked. This situation is true even though expenditures on marketing frequently yield sales revenue to firms over several periods. This paper introduces and examines three relatively low-cost approaches that small business owners may use as aids in estimating the aggregate value of marketing expenditures

Types of Product Innovations and Small Business Performance in Hostile and Benign Environments

The relationship between innovation and performance has been widely studied. In addition, many studies have examined moderating effects of types of competitive environments on this relationship. However, little work has been done to examine how specific types of product innovation strategies are related to performance in hostile and benign environments. Using results from a survey of a sample of small businesses, this paper used regression analysis to examine how degree of change in new product offerings and number of new product lines were related to satisfaction with financial performance. While neither type of innovation was related to satisfaction with performance in benign environments, the number of new lines developed was positively related to satisfaction with financial performance in hostile environments. The results from this sample indicate that the strategy of innovation through development of more new product lines may be preferable to developing dramatic innovations for small businesses in a hostile external environment

The detection and photometric redshift determination of distant galaxies using SIRTF's Infrared Array Camera

We investigate the ability of the Space Infrared Telescope Facility's Infrared Array Camera to detect distant (z ~ 3)galaxies and measure their photometric redshifts. Our analysis shows that changing the original long wavelength filter specifications provides significant improvements in performance in this and other areas.Comment: 28 pages incl 12 figures; to appear in June 1999 PASP. Fig.12 replaced with corrected versio

Effect of Performance Appraisal System on Employee Productivity;(Selected Public Senior High Schools, Ho Municipality, Ghana)

Performance appraisals improve the work performance of employees by helping them realize their full potentials in carrying out their firm's mission and also, to provide information to employees and managers for use in making work-related decisions. They, also, provide feedback to employees and thereby serve as a vehicle for personal and career development. Performance appraisals, however, are beset with difficulties as a result of their complex nature. The general objective of the study, therefore, was to evaluate the performance appraisal system and its effect on employee productivity (performance) at the Ghana Education Service (GES). The research design used in the study was the descriptive study because it was appropriate for the achievement of the research objectives. The population for the study was 153 and a sample size of 108 respondents was selected using the probability and non-probability sampling method. Interview and questionnaires were used as instruments for the study and out of 106 questionnaires distributed, all of them were retrieved from respondents and interview conducted for two respondents. The data was analyzed with tables, bar charts. Among the main findings of the study was that the GES only carried out performance appraisal when teachers were due for promotion. The finding indicated a negative relationship between performance appraisal and productivity of teachers. It means that performance appraisal has no link with the WASSCE results. The study recommends that the Ghana Education Service should adopt performance apprnaisal that is tailored to the job description and the job analysis, that is, there should be a clear cut policy on the conduct of performance appraisal in the GES in order to improve on its conduct. Keywords: High School, Productivity, Appraisal, Performance, Employee DOI: 10.7176/JESD/12-2-01 Publication date: January 31st 202

The NASA-UC Eta-Earth Program: I. A Super-Earth Orbiting HD 7924

We report the discovery of the first low-mass planet to emerge from the NASA-UC Eta-Earth Program, a super-Earth orbiting the K0 dwarf HD 7924. Keplerian modeling of precise Doppler radial velocities reveals a planet with minimum mass M_P sin i = 9.26 M_Earth in a P = 5.398 d orbit. Based on Keck-HIRES measurements from 2001 to 2008, the planet is robustly detected with an estimated false alarm probability of less than 0.001. Photometric observations using the Automated Photometric Telescopes at Fairborn Observatory show that HD 7924 is photometrically constant over the radial velocity period to 0.19 mmag, supporting the existence of the planetary companion. No transits were detected down to a photometric limit of ~0.5 mmag, eliminating transiting planets with a variety of compositions. HD 7924b is one of only eight planets known with M_P sin i < 10 M_Earth and as such is a member of an emerging family of low-mass planets that together constrain theories of planet formation.Comment: ApJ accepted, 10 pages, 10 figures, 4 table