3,089 research outputs found
George McClellan [1849-1913]: A Memoir read before the College of Physicians of Philadelphia, by J. Chalmers Da Costa, M.D., LL.D., Samuel D. Gross Professor of Surgery in Jefferson Medical College
No full textA memoir of Dr. George McClellan (1849-1913). Dr. McClellan was the author of the book Regional Anatomy, and grandson of George McClellan, M.D.; the founder of Jefferson Medical College
2000 Commencement Address: G. Timothy Johnson, M.D.
No full textTimothy Johnson, M.D., medical editor for ABC News will deliver the principal address and receive an honorary degree at the 154th commencement exercises at the College of the Holy Cross on Friday, May 26, beginning at 10:30 a.m. at Fitton Field.
Johnson, one of the nation’s leading medical communicators of health care information, has provided commentary on medical problems and answers for viewers since 1975. In addition to commentary on Good Morning America, Johnson provides on-air analysis of medical news for World News Tonight, Nightline and 20/20. He consults with ABC News regardingcoverage of medical news. He is also medical editor for WCVB-TV, Channel 5 in Boston.
Johnson holds joint positions in medicine at Harvard University and Massachusetts General Hospital in Boston. He is the founding editor of the Harvard Medical School Health Letter and co-editor of the Harvard Medical School Health Letter Book. He is also coeditor of the book, “Your Good Health,” published by Harvard Press, as well as co-author with former US Surgeon General Dr. C. Everett Koop of the book, “Let’s Talk,” published by Zondervan in 1992.
He originally intended to join the ministry and graduated from the North Park Seminary in 1963. Two years later he decided to enter medicine. Johnson, who is a Phi Beta Kappa graduate of Augustana College, graduated summa cum laude from Albany Medical College and holds a master’s degree in public health from Harvard University. Johnson served as an assisting minister at the Community Covenant Church in West Peabody, Mass.https://crossworks.holycross.edu/commence_address/1012/thumbnail.jp
Robust energy transfer mechanism via precession resonance in nonlinear turbulent wave systems
No full textA robust energy transfer mechanism is found in nonlinear wave systems, which favours transfers towards modes interacting via triads with nonzero frequency mismatch, applicable in meteorology, nonlinear optics and plasma wave turbulence. We emphasise the concepts of truly dynamical degrees of freedom and triad precession. Transfer efficiency is maximal when the triads' precession frequencies resonate with the system's nonlinear frequencies, leading to a collective state of synchronised triads with strong turbulent cascades at intermediate nonlinearity. Numerical simulations confirm analytical predictions
SOME SOCIAL AND POLITICAL VIEWS M.D. SKOBELEVS
No full textThe article analyzes social and political views of M.D. Skobelev, an outstanding military commander, a hero of the Russian-Turkish and Balkan wars¸ who contributed greatly to the entry of Central Asia (Turkestan) and other regions into the Russian Empire. The author concludes that M.D. Skobelev’s views were close to those of the Slavophiles, though they differed greatly on a number of key issues. They both considered that it was necessary to restore national identity, to consolidate Orthodoxy, to give up European values to the detriment of national ones, to search for the own development way instead of the western one, which was deadlock and destructive
An Outage Analysis Of Multibranch Diversity Receivers With Cochannel Interference In α-μ, κ-μ, And η-μ Fading Scenarios
No full textWireless communications systems in a frequency reuse environment are subject to cochannel interference. In order to improve the system performance, diversity techniques are deployed. Among the practical diversity schemes used, Equal-Gain Combining (EGC) appears as a reasonably simple and effective one. Unfortunately, the exact analysis of the outage probability of EGC receivers is rather intricate for it involves the evaluation of multifold nested integrals. It becomes mathematically intractable with the increase of the number of diversity branches and/or interferers. For example, for N B diversity branches and N I arbitrary independent cochannel interferers, the exact formulation using the convolutional approach requires 2 + N B + (N B × N I ) nested integrals, which, very quickly, and for any practical system, turns out to be mathematically intractable. In this paper, we propose accurate approximate formulations for this problem, whose results are practically indistinguishable from the exact solution. In our model, the system is composed by N B branches and N I interferers so that the desired signals are coherently summed, whereas the interfering signals are incoherently summed at the EGC receiver. Three sets of fading scenarios, namely α-μ, κ-μ, and η-μ, are investigated. The proposed approach is indeed flexible and accommodates a variety of mixed fading scenarios for desired and interfering signals. © 2012 Springer Science+Business Media, LLC.641319Sowerby, K.W., Williamson, A.G., Outage probability calculations for multiple cochannel interferers in cellular mobile radio systems (1988) Proceedings Institute of Electrical Engineering - Radar and Signal Processing, 135 (3), pp. 208-215. , 10.1049/ip-f-1.1988.0028Yao, Y.-D., Sheikh, A.U.H., Investigations into cochannel interference in microcellular mobile radio systems (1992) IEEE Transactions on Vehicular Technology, 41 (2), pp. 114-123. , 10.1109/25.142770Proakis, J.G., (2001) Digital Communications, , McGraw-Hill New YorkNakagami, M., The m-distribution: A general formula of intensity distribution of rapid fading (1960) Hoffman, W. C. Statistical Methods in Radio Wave Propagation, , Pergamon, Elmsford, NYReig, J., Cardona, N., Nakagami-m approximate distribution of sum of two correlated Nakagami-m correlated variables (2000) IET Electronics Letters, 36 (11), pp. 978-980. , 10.1049/el:20000728Hu, J., Beaulieu, N.C., Accurate simple closed-form approximations to Rayleigh sum distributions and densities (2005) IEEE Communications Letters, 9 (2), pp. 109-111. , 10.1109/LCOMM.2005.02003Hu, J., Beaulieu, N.C., Accurate closed-form approximations to Ricean sum distributions and densities (2005) IEEE Communications Letters, 9 (2), pp. 133-135. , 10.1109/LCOMM.2005.02029Santos Filho, J.C.S., Yacoub, M.D., Simple precise approximations to Weibull sums (2006) IEEE Communications Letters, 10 (8), pp. 614-616. , 10.1109/LCOMM.2006.1665128Santos Filho, J.C.S., Yacoub, M.D., Nakagami-m approximation to the sum of M non-identical independent Nakagami-m variates (2004) IET Electronics Letters, 40 (15), pp. 951-952. , 10.1049/el:20045104Santos Filho, J.C.S., Yacoub, M.D., Highly accurate κ-μ Approximation to sum of M independent non-identical Ricean variates (2005) IET Electronics Letters, 41 (6), pp. 338-339. , 10.1049/el:20057727Santos Filho, J.C.S., Yacoub, M.D., Highly accurate η-μ Approximation to the sum of M independent non-identical Hoyt variates (2005) IEEE Antennas and Wireless Propagation Letters, 4, pp. 436-438. , 10.1109/LAWP.2005.860192Coleman, T.F., Li, Y., An interior trust region approach for nonlinear minimization subject to bounds (1996) SIAM Journal on Optimization, 6, pp. 418-445. , 1387333 0855.65063 10.1137/0806023Shah, A., Haimovich, A.M., Performance analysis of maximal ratio combining and comparison with optimum combining for mobile radio communications with cochannel interference (2000) IEEE Transactions on Vehicular Technology, 49 (4), pp. 1454-1463. , 10.1109/25.875282Aalo, V.A., Zhang, J., Performance analysis of maximal ratio combining in the presence of multiple equal-power cochannel interferers in a Nakagami fading channel (2001) IEEE Transactions on Vehicular Technology, 50 (2), pp. 497-503. , 10.1109/25.923061Yang, L., Alouini, M.-S., On the average outage rate and average outage duration of wireless communication systems with multiple cochannel interferers (2004) IEEE Transactions on Wireless Communication, 3 (4), pp. 1142-1153. , 10.1109/TWC.2004.828019Abu-Dayya, A.A., Beaulieu, N.C., Outage probabilities of diversity cellular systems with cochannel interference in Nakagami fading (1992) IEEE Transactions on Vehicular Technology, 41 (4), pp. 343-355. , 10.1109/25.182583Song, Y., Blostein, S.D., Cheng, J., Exact outage probability for equal gain combining with cochannel interference in Rayleigh fading (2003) IEEE Transactions on Wireless Communication, 2 (5), pp. 865-870. , 10.1109/TWC.2003.816796Hadzi-Velkov, Z., Level crossing rate and average fade duration of EGC systems with cochannel interference in Rayleigh fading (2007) IEEE Transactions on Communication, 55 (11), pp. 2104-2113. , 10.1109/TCOMM.2007.908519Tellambura, C., Annamalai, A., Further results on the Beaulieu series (2000) IEEE Transactions on Communication, 48 (11), pp. 1774-1777. , 1018.94501 10.1109/26.886465Da Costa, D.B., Yacoub, M.D., Santos Filho, J.C.S., Highly accurate closed-form approximations to the sum of α-μ Variates and applications (2008) IEEE Transactions on Wireless Communication, 7 (9), pp. 3301-3306. , 10.1109/TWC.2008.070336Da Costa, D.B., Yacoub, M.D., Accurate aproximations to the sums of generalized random variables and applications in the performance analysis of diversity systems (2009) IEEE Transactions on Communication, 57 (5), pp. 1271-1274. , 10.1109/TCOMM.2009.05.070312Yacoub, M.D., The α-μ Distribution: A physical fading model for the Stacy distribution (2007) IEEE Transactions on Vehicular Technology, 56 (1), pp. 27-34. , 10.1109/TVT.2006.883753Yacoub, M.D., The κ-μ Distribution and the η-μ Distribution (2007) IEEE Antennas and Propagation Magazine, 49 (1), pp. 68-81. , 10.1109/MAP.2007.370983Abramowitz, M., Stegun, I.A., (1972) Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, , Dover New York 0543.33001Jiménez, D.M., Paris, J.F., Outage probability analysis for η- μ fading channels (2010) IEEE Communications Letters, 14 (6), pp. 521-523. , 10.1109/LCOMM.2010.06.092501Simon, M.K., Alouini, M.-S., (2000) Digital Communications over Fading Channels: A Unified Approach to Performance Analyis, , Wiley New York 10.1002/0471200697Tellambura, C., Annamalai, A., An unified numerical approach for computing the outage probability for mobile radio systems (1999) IEEE Communications Letters, 3 (4), pp. 97-99. , 10.1109/4234.75720
Author Correction:A 41,500 year-old decorated ivory pendant from Stajnia Cave (Poland)
No full textCorrection to: Scientific Reports https://doi.org/10.1038/s41598-021-01221-6, published online 25 November 2021The original version of this Article contained errors in the author list where Marjolein D. Bosch was omitted from the author list, and Mikołaj Urbanowski was incorrectly listed as an author of the original Article, and has subsequently been removed.The Author contributions section now reads:“S.T. W.N. and A.N. conceived the project; S.T., W.N., A.P., M.B., S.C., M.D., H.F., A.M., M.D. B., D.P., M.P.R., C.M.R., V.S-M., G.M.S., P.S., M.S., K.S., A.V., F.W., H.W., A.W., M.Z., S.B., A.N., J-J. H., performed research; S.T., A.P., W.N., M.B., M.D.B., S.C., M.D., H.F., A.M., D.P., M.P.R., C.M.R., V.S-M., G.M.S., P.S., M.S., K.S., A.V., F.W., H.W., A.W., M.Z., S.B., A.N., J-J. H. analysed all archaeological data; S.T. and A.P. wrote the paper with the collaboration of all the co-authors.”The original Article and its accompanying Supplementary Information file have been corrected
Letter from M.C. Morton, M.D., Director, Bluff Hospital, to Whom It May Concern, July 24, 1958
No full textThis letter, issued by Morton, M.C., M.D., Director, Bluff Hospital, Yokohama, Japan, explains that Tsugitada Kanamori has requested a certificate of ill health for the purpose of establishing dependency upon arrival to the Bluff Hospital in Yokohama. The letter describes his history of asthmatic attacks and the treatment for his cardiac asthma.This collection contains one box of documents belonging to Tsugitada Kanamori. Materials in this collection mostly pertain to Kanamori’s efforts regarding canceling his renunciation and reinstating his American citizenship
Edward C. Klatt, M.D.
No full textDr Klatt received his B.S. in Zoology from the University of Nevada and his M.D. degree from Loma Linda University. Dr Klatt did his residency and fellowship in pathology at the University of Southern California. Dr Klatt was chairman of the department of pathology at the Florida State University College of Medicine. Dr Klatt is currently professor of pathology at Mercer University School of Medicine. During his tenure at the University of Utah Dr Klatt developed WebPath: The Internet Pathology Laboratory for Medical Education which has been continuously hosted by the Spencer S. Eccles Health Sciences Library receiving over 100 million visits annually https://webpath.med.utah.edu/ Dr Klatt is the author of the textbook, Pathology of HIV/AIDS, now in its 31st edition. Dr Klatt the author of 4 of the 7 reference works in the Robbins & Cotran Pathological Basis of Disease used worldwide in health science education
Letter from M.C. Morton, M.D., Director, Bluff Hospital, to Whom It May Concern, July 22, 1958
No full textThis letter, issued by Morton, M.C., M.D., Director, Bluff Hospital, Yokohama, Japan, explains that Tsugitada Kanamori has requested a certificate of ill health for the purpose of establishing dependency upon arrival to the Bluff Hospital in Yokohama. His illness had not been not identified.This collection contains one box of documents belonging to Tsugitada Kanamori. Materials in this collection mostly pertain to Kanamori’s efforts regarding canceling his renunciation and reinstating his American citizenship
Urticariform Striae Distensae
No full text[No abstract available]233340341Zheng, P., Lavker, R.M., Kligman, A.M., Anatomy of striae (1985) Br J Dermatol, 112, pp. 185-193Hashimoto, K., Detroit, M.D., Linear focal elastosis: Keloidal repair of striae distensae (1998) J Am Acad Dermatol, 39, pp. 309-313Peterson, J.L.M., Cmarlin, S.L., Read, S.I., Edematous striae distensae (1984) Arch Dermatol, 120, pp. 1097-1098Cordeiro, R.C.T., Moraes, A.M., Ulceration of striae distensae in a patient with systemic lupus erythematosus (2007) J Eur Acad Dermatol Venereol, 22, pp. 389-391Stroud, J.D., Van Dersal, J.V., Striae (1971) Arch Dermatol, 103, pp. 103-104Shuster, S., The cause of striae distensae (1979) Acta Derm Venereol Suppl, 59, pp. 105-108Sheu, H.-M., Yu, H.-S., Chang, C.-H., Mast cell degranulation and elastolysis in the early stage of stria distensae (1991) J Cutan Pathol, 18, pp. 410-41
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