177,154 research outputs found
Assessment of levels and dynamics of intra-specific genetic diversity of Latin American tropical trees for conservation and sustainable management
No full textAndrew Lowe, Eric Bandou, Peter Breyne, Henri Caron, Stephen Cavers, Nathalie Colpaert, Bernd Degen, Rogerio Gribel, Marvin Hernandez, Antoine Kremer, Patrick Labbe, Maristerra Lemes, Rogerio Margis, Marcia Margis-Pinheiro, Marc van Montagu, Carlos Navarro and Julia Wilso
MarGIS Marine Geo-Information System for Visualisation and Typology of Marine Geodata.
No full textMarGIS intends the combination of Geographical Information Systems (GIS), research data, and multivariate geostatistical techniques for characterisation and identification of distinct provinces at the seafloor of the North Sea. Such a typological approach, the analysis of classification based on types, is one prerequisite for management issues related to coastalseafloor. It provides a framework for improved application of large environmental data sets, allows enhanced visualisation of multiple information layers, and supports modeling of temporal and spatial interrelations of coastal and ocean regions. To tackle the problem of presentation of large data sets MarGIS uses a web-based viewer which allows a clear visualisation of the information for the general public. The viewer allows a dynamic actualisation and access to metadata and additional information
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
Transformação genética de Arabidopsis thaliana como ferramenta para o estudo funcional de APX-R (Ascorbate Peroxidase-related)
No full textA redução do oxigênio molecular a água em organismos aeróbios permitiu a obtenção de energia química de maneira muito mais eficiente, representando um importante ganho adaptativo no metabolismo energético. No decorrer deste processo, porém, moléculas chamadas de espécies reativas de oxigênio (ERO) são formadas. Apesar de tóxicas quando em altas concentrações, as ERO atuam como moléculas sinalizadoras durante o desenvolvimento da planta, além de sinalizar para vias responsivas a estresses bióticos e abióticos. O acúmulo destas moléculas nas células é modulado pela ação do sistema antioxidante, o qual é composto por componentes enzimáticos e não-enzimáticos. As enzimas do tipo ascorbato peroxidase (APX) são codificadas por uma pequena família gênica presente nos genomas de algas e plantas, onde exercem papel fundamental no metabolismo do peróxido de hidrogênio. Trabalhos prévios do nosso grupo revelaram a existência de um gene anotado como provável APX no genoma de arroz (Oryza sativa L.), entretanto, análises filogenéticas mostraram que esta proteína não agrupa com membros da família APX, mas integra uma família distinta de heme peroxidases de classe I, até então desconhecida, a qual foi intitulada ascorbate peroxidase-related (APX-R). Linhagens mutantes de Arabidopsis thaliana com expressão reduzida de APX-R, bem como linhagens transgênicas que superexpressam o gene resultaram em uma diminuição significativa da taxa de germinação das sementes. Na literatura, APX-R de Arabidopsis thaliana é denominada APX6, e foi caracterizada como uma proteína de localização subcelular supostamente citosólica. Nosso grupo, porém, já demonstrou experimentalmente a localização cloroplastídica de APX-R de arroz em protoplastos. Com o propósito de determinar a localização subcelular de APX-R na planta modelo Arabidopsis thaliana, o presente trabalho objetivou a obtenção de linhagens transgênicas superexpressando AtAPx-R fusionada à proteína fluorescente enhanced yellow fluorescente protein (EYFP). Após a transformação e seleção das linhagens transgênicas, estas plantas foram analisadas em microscópio de fluorescência, por meio do qual se pode comprovar a obtenção de linhagens transgênicas superexpressando a proteína recombinante de maneira estável. Estas linhagens servirão para uma análise detalhada em microscopia confocal de forma a determinar a localização subcelular de APX-R em Arabidopsis thaliana.The reduction of molecular oxygen to water in aerobic organisms allowed the attainment of chemical energy in a much more efficient way, representing an important adaptive gain in the energetic metabolism. During this process, however, molecules known as reactive oxygen species (ROS) are generated. Although toxic in high concentrations, ROS act as signaling molecules during plant development, besides being involved in biotic and abiotic stress responsive pathways. Reactive oxygen species accumulation inside plant cells is modulated by the antioxidant system, which is composed by enzymatic and non-enzymatic components. The ascorbate peroxidase (APX) enzymes are coded by a small gene family present in plant and algae genomes, where they exert an essential role in hydrogen peroxide metabolism. Previous work of our group revealed the existence of a gene annotated as a putative APX in the rice genome (Oryza sativa L.). However, phylogenetic analysis showed that this protein does not cluster with the APX family, but integrates a distinct class I haem peroxidases family, unknown by the date, which was addressed as ascorbate peroxidase-related (APX-R). Mutant lineages of Arabidopsis thaliana with reduced expression of APX-R, as well as transgenic lineages that overexpress this gene showed a significant reduction in the seeds germination rate. In the literature, Arabidopsis thaliana APX-R is known as APX6 and is characterized as a cytosolic protein. Our group, however, has already experimentally shown the chloroplastic localization of APX-R in rice protoplasts. In order to determine the subcellular localization of APX-R in the model plant Arabidopsis thaliana, transgenic lineages overexpressing AtAPX-R fusioned to the enhanced yellow fluorescent protein (EYFP) were generated. After transformation and selection of the transgenic lineages, these plants were analyzed by fluorescence microscopy, through which it was proved the obtainment of transgenic plants stably overexpressing the recombinant protein. These lineages will be useful for a detailed analysis in confocal microscopy in order to determine the subcellular localization of APX-R in Arabidopsis thaliana
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