177,442 research outputs found
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
Hansen, Lee (Lee R.). Union, non-union, and managerial pay plan state employees, 2008-2019
No full text1 online resource (2 pages)"July 1, 2021."Provides the number of union and non-union state employees in each of the last 14 years. Also provides the number of state employees paid under the state's managerial pay plan during each of those years. Updates OLR research report 2019-R-011
Magneettiset nanohiukkaset : synteesistä biomimetiikkaan, dynaamiseen itsejärjestymiseen ja kollektiivisiin ilmiöihin
No full textJulkaistu vain painettuna, saatavuus katso Bibid. Published only in printed form, availability see BibidMagnetic nanoparticles exhibit size-dependent magnetic properties that make them promising building blocks for advanced materials and devices. This thesis covers several aspects of magnetic nanoparticles, ranging from their synthesis to applications.
In Publications I and II, nucleation and growth of monodisperse cobalt nanoparticles in a widely used hot-injection method were investigated. In contrast to the prior understanding, the nucleation was shown to be delayed and kinetically controlled, which was applied to designing more robust heating-up methods without sacrificing the particle uniformity. A facile test tube synthesis method was introduced for rapid screening of different reaction conditions that would otherwise be expensive and laborsome.
In Publications III and IV, magnetic nanoparticles were utilized in the contexts of biocomposites and biomimetics. Magnetically active organic-inorganic biofibers were produced by synthesizing cobalt ferrite nanoparticles onto biofibers of native cellulose nanofibrils. A template-free method for creating biomimetic magnetic cilia was demonstrated through magnetically guided self-assembly of micron-sized cobalt particles with elastomeric polymers. The cilia were applied to mixing of liquids by actuation via an external magnetic field.
In Publications V and VI, iron oxide nanoparticles were used as force mediators to drive water droplets on superhydrophobic surfaces. Individual droplets placed in a confining magnetic field were shown to oscillate with decreasing amplitude, from which the dissipative forces were determined as a function of normal force. Concentrated magnetic droplets were unstable in a perpendicular magnetic field, leading to droplet splitting and self-assembly into complex patterns. A controlled transition from equilibrium self-assembly to dissipative self-organization was observed under dynamic magnetic field.
In Publication VII, microwave dynamics of dipolarly coupled single-domain magnetic nanoparticles interacting in the near-field regime were studied analytically and numerically. The uniform Kittel mode was shown to be replaced by quasi-uniform collective modes. The resonant frequency and width were determined to be dependent on the way the nanoparticles were assembled with respect to each other.
The results of this thesis contribute to the understanding of the physics and chemistry of magnetic nanoparticles. The presented concepts pave way towards modern applications, such as robust magnetic microfluidic mixers, surface analysis methods, programmable microdroplet chemistry and tunable microwave materials.Magneettiset nanohiukkaset ja niiden kokoon liittyvät ominaisuudet mahdollistavat uudentyyppisiä materiaaleja ja laitteita. Tämä väitöskirja käsittelee magneettisia nanohiukkasia monesta eri näkökulmasta - alkaen aina valmistuksesta sovelluksiin saakka.
Julkaisuissa I ja II tutkittiin monodisperssien kobolttinanohiukkasten ydintymistä ja kasvua nestemäisessä väliaineessa. Toisin kuin tähän asti oli oletettu, ydintyminen oli viivästynyttä ja kineettisesti hallittavissa, mikä mahdollisti aiempaa suoraviivaisemman synteesin ilman kokojakauman kasvua. Lisäksi monodispersseille nanohiukkasille esiteltiin yksinkertainen, kertakäyttöisiä koeputkia hyödyntävä valmistusmenetelmä, mikä mahdollisti optimaalisten reaktio-olosuhteiden vaivattoman kartoituksen.
Julkaisuissa III ja IV magneettisia nanohiukkasia sovellettiin biokomposiittimateriaaleihin ja biologisia toimintoja jäljitteleviin systeemeihin. Magneettisesti aktiivisia komposiitteja tuotettiin syntetisoimalla kobolttiferriittinanohiukkasia nanoselluloosasta valmistetuille biokuiduille. Biologisia värekarvoja jäljitteleviä rakenteita valmistettiin mikrometrin kokoisista kobolttihiukkasista ja elastomeereistä itsejärjestymisen avulla. Näitä magneettikentällä ohjattavia värekarvoja sovellettiin nesteiden sekoittamiseen.
Julkaisuissa V ja VI magneettisia rautaoksidinanohiukkasia käytettiin välittämään ulkoisia magneettisia voimia vesipisaroihin superhydrofobisilla pinnoilla. Magneettisessa potentiaalikuopassa värähtelemään saatettujen pisaroiden liikkeen vaimenemisesta voitiin määrittää pisaraan vaikuttavat häviövoimat. Toisaalta konsentroidut, voimakkaasti magneettiset pisarat olivat epästabiileja magneettikentässä, mikä johti pisaroiden halkeamiseen pienemmiksi pisaroiksi, jotka itsejärjestyivät monimutkikkaiksi kuvioiksi. Hallittu muutos staattisesta itsejärjestymisestä dynaamiseen itseorganisoitumiseen havaittiin asettamalla systeemi värähtelevään ulkoiseen magneettikenttään.
Julkaisussa VII tutkittiin keskenään vuorovaikuttavien magneettisten nanohiukkasten mikroaaltovastetta analyyttisesti ja laskennallisesti. Havaittiin että Kittelin moodi muuttui näennäisen homogeenisiksi kollektiivisiksi moodeiksi vuorovaikutusten takia ja että ferromagneettisen resonanssin taajuus ja kaistanleveys riippuivat hiukkasten järjestymisestä.
Tämän väitöskirjan tulokset edistävät magneettisten nanohiukkasten kemian ja fysiikan ymmärrystä. Esilletuodut lähestymistavat viitoittavat tietä kohti uusia sovelluksia kuten mikrofluidisia sekoittimia, pintojen analyysitekniikoita, ohjelmoitavaa pisarakemiaa ja magneettisia mikroaaltomateriaaleja
Letter from Joseph R. Goodman to Akiko Nishioka, May 27, 1942
No full textLetter from Joseph R. Goodman to Akiko Nishioka, regarding Japanese American students from the west coast who resettled at colleges and universities in the east.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
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