88,943 research outputs found
The Colors Of Galaxies At 4 < Z < 8 And Their Contribution To Reionization
No full textWe present recent results on the rest-frame ultraviolet (UV) colors of galaxies at high-redshift, and the contribution of these galaxies to the reionization of the intergalactic medium (IGM). Using a combination of deep and wide data from the CANDELS, HUDF09 and ERS programs, we find that galaxies at z = 7 appear to be dust free, and they become substantially dustier by z = 4. Faint galaxies at z = 7 appear very blue, but they are consistent with the colors of very blue local galaxies, thus there is no evidence for the presence of exotic stellar populations. We find that the observable galaxy population can sustain a fully ionized IGM at z = 6 if the escape fraction of ionizing photons (f(esc)) is 30%. If the luminosity function extends much fainter, then the required f(esc) is lowered to similar to 10%. Examining the constraint on the emission rate of ionizing photons from Ly alpha forest measurements, we find that if the luminosity function extends to M-UV = -13, f(esc) must be less than 13% at z = 6. This escape fraction can still sustain a reionized IGM at z = 6, and even at z = 7, but unless it rises substantially at z > 6, the IGM may be similar to 20 - 50% neutral by z = 8.Astronom
Concepts and Methods
No full textThis chapter provides an overview of the Changing Academic Profession (CAP) survey methodology. Included are a discussion of sampling, data collection, and response rates; a detailed exposition of the survey items related to internationalization; and an analysis of data quality (including item nonresponse) organized both by item and country. The chapter provides a nuanced overview of the quality of the data upon which the remaining chapters are based
Insuring Long Term Care In the US
No full textLong-term care expenditures constitute one of the largest uninsured financial risks facing the elderly in the United States. This paper provides an overview of the economic and policy issues surrounding insuring long-term care expenditure risk. Through this lens we also discuss the likely impact of recent long-term care public policy initiatives at both the state and federal level.
The Internationalisation of the Academy: Changes, Realities and Prospects
No full textThe increasing permeability of national boundaries in faculty research and teaching and the increasing mobility of students and faculty across borders are crucial aspects of the internationalisation of higher education. Relying on the results of the Changing Academic Profession International Survey which provides information on some 25,000 academics working in 19 countries located in 5 continents, the book addresses the following topics:changes in the internationalization of the academy over the period 1992-2007, the international mobility of faculty, the international dimension of faculty’s research activities, the process of regionalisation in higher education, gender and faculty internationalization, the internationalization and the new academic generation, and the identification and analysis of faculty “internationalists” as a cross-national subgroup
Quantization of Skyrmions
No full textThe Skyrme model is a nonlinear classical field theory which models the strong interaction between atomic nuclei. In order to compare the predictions of the Skyrme model with nuclear physics, it has to be quantized. We show, summarizing earlier work, how the rational map ansatz can be employed to calculate the Finkelstein-Rubinstein constraints which arise during quantization. Then we give an overview of current results on the quantum ground states in the Skyrme model. We end with an outlook on future work
The SN2 reaction and its relationship with the Walden inversion, the Finkelstein and Menshutkin reactions together with theoretical calculations for the Finkelstein reaction
No full textThis communication gives an overview of the relationships between four reactions that although related were not always perceived as such: S2, Walden, Finkelstein, and Menshutkin. Binary interactions (S2 & Walden, S2 & Menshutkin, S2 & Finkelstein, Walden & Menshutkin, Walden & Finkelstein, Menshutkin & Finkelstein) were reported. Carbon, silicon, nitrogen, and phosphorus as central atoms and fluorides, chlorides, bromides, and iodides as lateral atoms were considered. Theoretical calculations provide Gibbs free energies that were analyzed with linear models to obtain the halide contributions. The M06-2x DFT computational method and the 6-311++G(d,p) basis set have been used for all atoms except for iodine where the effective core potential def2-TZVP basis set was used. Concerning the central atom pairs, carbon/silicon vs. nitrogen/phosphorus, we reported here for the first time that the effect of valence expansion was known for Si but not for P. Concerning the lateral halogen atoms, some empirical models including the interaction between F and I as entering and leaving groups explain the Gibbs free energies.Open Access funding provided thanks to the CRUE-CSIC
agreement with Springer Nature. Ministerio de Ciencia, Innovación y
Universidades (PGC2018-094644-B-C22), and Comunidad Autónoma
de Madrid (P2018/EMT-4329 AIRTEC-CM
Autoimmune markers and vascular immune deposits in Finkelstein-Seidlmayer vasculitis: Systematic literature review
No full textFinkelstein-Seidlmayer vasculitis, also called acute hemorrhagic edema of young children or infantile immunoglobulin A vasculitis, is habitually a benign skin-limited small vessel leukocytoclastic vasculitis that mainly affects infants 24 months or less of age. Since this disease is commonly triggered by an infection, an immune-mediated origin has been postulated. To better appreciate the possible underlying immune mechanism of this vasculitis, we addressed circulating autoimmune markers and vascular immune deposits in patients contained in the Acute Hemorrhagic Edema BIbliographic Database, which incorporates all original reports on Finkelstein-Seidlmayer vasculitis. A test for at least one circulating autoimmune marker or a vascular immune deposit was performed in 243 cases. Subunits of complement system C4 resulted pathologically reduced in 4.7% and C3 in 1.4%, rheumatoid factor was detected in 6.1%, and antinuclear antibodies in 1.9% of cases. Antineutrophil cytoplasmic antibodies were never demonstrated. Immunofluorescence studies were performed on 125 skin biopsy specimens and resulted positive for complement subunits in 46%, fibrinogen in 45%, immunoglobulin A in 25%, immunoglobulin M in 24%, immunoglobulin G in 13%, and immunoglobulin E in 4.2% of cases. Infants testing positive for vascular immunoglobulin A deposits did not present a higher prevalence of systemic involvement or recurrences, nor a longer disease duration. In conclusion, we detected a very low prevalence of circulating autoimmune marker positivity in Finkelstein-Seidlmayer patients. Available immunofluorescence data support the notion that immune factors play a relevant role in this vasculitis. Furthermore, vascular immunoglobulin A deposits seem not to play a crucial role in this disease
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Finkelstein, Leonard H., D.O. - President and Chief Executive Officer 1990-2000
No full textLeonard H. Finkelstein, DO, has played an important role in shaping PCOM as an educator, a clinician and since 1990, as the College\u27s sixth president. He received his DO degree in 1959 and after an internship and general surgery residency at Zieger Osteopathic Hospital in Detroit, returned to his alma mater in 1961 for a residency in urologic surgery. Finkelstein officially joined the College faculty in 1970 as chairman of the Division of Urology. Before stepping down from this post in 1993 to focus on his responsibilities as PCOM\u27s president, he developed an outstanding urology residency program. Finkelstein is a preeminent urologic surgeon, trained in a PCOM tradition begun by H. Willard Sterrett, DO (1917), in the 1940s, yet focused on cutting-edge ideas and technologies such as laser surgery, which he introduced to PCOM\u27s Division of Urology in the early 1980s. As a pioneering researcher in urology in the osteopathic profession, he has lectured and published extensively. In October 1984 Finkelstein became the first DO urologist to publish in the Surgical Clinica of North America, and the first DO not affiliated with an allopathic institution to publish in The American Journal of Surgery. As president, Finkelstein has steered PCOM through times that threatened the very survival of the institution. He was responsible for the ultimate sale of Barth Pavilion in 1993 that saved the College from bankruptcy, the rejuvenation and expansion of the student body and campus after hard times, and the rebuilding of the College\u27s financial foundation through a $25 million capital campaign. Within the larger osteopathic community, Finkelstein has received numerous awards, including the George W. Northup, DO, Distinguished Service Award from the Student Osteopathic Medical Assocation and the Distinguished Osteopathic Surgeon Award from the American College of Osteopathic Surgeons. From the institution to which he has devoted more than half his life, Finkelstein has been honored with the Christian R. and Mary F. Lindback Award for Distinguished Teaching and the Mentor Award from PCOM\u27s Student National Medical Association.https://digitalcommons.pcom.edu/portraits/1035/thumbnail.jp
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
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