177,043 research outputs found
RELATIVISTIC COULOMB EXCITATION OF NEUTRON RICH FE AND NI ISOTOPES
No full textThis PhD thesis discusses the measurement of E1 strength around one particle separation energy in exotic neutron rich Iron and Nickel isotopes using the relativistic coulomb excitation.
The state of the art of detectors array was used in this measurement: the AGATA segmented HPGe detector array, the DALI2 array and the HECTOR+ large volume scintillator detector array.
Relativistic coulomb excitation is a well established experimental technique to investigate the properties of nuclear structure: in particular the E1 isovector response of nuclei.
The electric dipole response of neutron rich nuclei around the one particle separation energy (6-12 MeV energy range) is presently the subject of a large experimental and theoretical effort. In this energy region structures and accumulations of E1 strength were measured in a variety of nuclei along all the valley of stability. These structures, commonly called Pygmy Dipole Resonance (PDR), are at the centre of a scientific debate as the strength is connected to the neutron skin thickness and the symmetry energy term of the nuclear equation of state.
The relevance of these aspects motivated the investigation of PDR in exotic nuclei. In fact, in spite of the large amount of data about E1 strength distribution in stable nuclei, very few data are available for neutron rich exotic nuclei.
In this work the measurement of PDR states in 64;62 Fe and 70 Ni nuclei is presented and discussed in details. The Iron isotope investigation was performed in GSI in 2012 and concluded in 2014, during the PreSPEC AGATA experimental campaing, while the 70 Ni E1 response was measured at the RIKEN/RIBF laboratory during the DALI2 campaign in autumn 2014.
Neutron rich isotopes are expected to be characterized by an enhancement of these PDR structures because of a more unbalanced neutron over proton number ratio. The results of this measurement, here reported, is therefore an important test benchmark for the theories developed to explain these structures
A Robust Design for Cellular Vehicles of Gold Nanorods for Multimodal Imaging
No full textAuthors Dr. Marisa Benagiano and Prof. Mario Milco D’Elios were not included when this article was originally published. The corrected list of author of this manuscript is: F. Ratto,* S. Centi, C. Avigo, C. Borri, F. Tatini, L. Cavigli, C. Kusmic, B. Lelli, S. Lai, M. Benagiano, M. M. D’Elios, S. Colagrande, F. Faita, L. Menichetti, and R. Pini The affiliation for Dr. Benagiano and Prof. D’Elios is: Department of Experimental and Clinical Medicine University of Florence, Largo Brambilla 3, 50134 Florence, (FI), Italy Ref. [82] was not included in the originally published version of this article. It should be added to the second paragraph on page 7179, which then reads as follows: “More recently, the notion to exploit the natural tropism of cells, such as tumor-associated macrophages,[35–39] T cells,[40,82] mesenchymal stem cells,[41–43] and neural stem cells,[44,45] has begun to emerge as a radical alternative.” Ref. [82] is: G. Baldi, C. Ravagli, M. Comes Franchini, M. M. D’Elios, M. Benagiano, M. Bitossi (Colorobbia Italia S.p.A.) WO 104664, 2015. The Acknowledgements should be corrected to read as follows: “This work was in part supported by the Projects of Tuscan Region “NANOTREAT” and “SYNERGY” and by the ERANET+ Project of Tuscan Region and European Community “LUS BUBBLE”. The authors wish to thank Dr. Daniele Panetta for his expertise in X-ray micro imaging and Dr. Giovanni Baldi of CERICOL Research Center of Colorobbia Group for his expertise and knowledge on cellular nano-engineering.” The authors apologize for any inconvenience or misunderstanding that these errors may have caused. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinhei
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Liftings for noncomplete probability spaces
No full textThe current state of knowledge concerning liftings for noncomplete probability spaces is discussed. This is a somewhat expanded version of the author's talk given at the 1991 Summer Conference on General Topology and Applications in Honor of Mary Ellen Rudin and Her Work.PT: S; CR: BURKE MR, IN PRESS P AM MATH S BURKE MR, 1991, ISRAEL J MATH, V73, P33 BURKE MR, 1992, ISRAEL J MATH, V79, P289 CARLSON T, THEOREM LIFTING CHRISTENSEN JPR, 1974, TOPOLOGY BOREL STRUC FREMLIN DH, 1989, HDB BOOLEAN ALGEBRAS, P877 INOESCUTULCEA A, 1966, 5TH P BERK S MATH ST, V2 IONESCUTULCEA A, 1967, CONTRIBUTIONS PROB 1, P63 IONESCUTULCEA A, 1969, TOPICS THEORY LIFTIN JECH TJ, 1978, SET THEORY JOHNSON RA, 1980, P AM MATH SOC, V80, P234 JUST W, IN PRESS T AM MATH S KUPKA J, 1983, INDIANA U MATH J, V32, P717 LOSERT V, 1983, LNM, V1080, P95 MAHARAM D, 1958, P AM MATH SOC, V9, P987 SHELAH S, 1983, ISRAEL J MATH, V45, P90 TALAGRAND M, 1982, P AM MATH SOC, V84, P379 VONNEUMANN J, 1931, CRELLES J MATH, V165, P109; NR: 18; TC: 0; J9: ANN N Y ACAD SCI; PG: 4; GA: BZ86BSource type: Electronic(1
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