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Chandraratna, M. F., Nanayakkara, K. D. S. S. (1948): Studies in cassava. II. The production of hybrids. Trop. Agric. , 104, 59-74. Studies in cassava II. The production of hybrids. Trop. Agric

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subsequent technology. It can't reveal the exact interaction between science and technology. Here the paper aims to deploy a method called hybrid documents co-citation analysis (HDCCA) to overcome the above weakness. And in the whole paper, we first

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The aim of the research was to find out whether registered hybrids have the best formula or not. The experimental material consisted of four commercial hybrids: BLASK, GROM, WIARUS and WILGA, and 17 experimental hybrids obtained from the same or related lines. The material was divided into the following groups: 1) SC hybrids: BLASK, and GROM and 7 related hybrids, 2) TC hybrids: WIARUS and 8 related hybrids, 3) TC hybrid WILGA and 2 related hybrids. In the first group one experimental hybrid yielded the same as BLASK, while four other hybrids yielded as well as GROM. In the second group the experimental hybrids did not differ significantly in yield compared to WIARUS. in the third group WILGA appeared to have the optimal formula.

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. , Tenuta , A. , Stewart , G. 2009 . Impact of foliar fungicides on corn hybrids . Field Crop Report 1 : 1 – 4 . Available at http://www.ontariosoilcrop.org/docs/v6cor4.pdf

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the acoustic design and the measurement methods of exhaust mufflers. The attenuation of gas dynamic noise relies on suitable reactive and dissipative with hybrid mufflers, designed and optimized to damp or emphasize certain spectral components of the

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Khattab, S. (2011) Effect of different media and growth regulators on the in vitro shoot proliferation of aspen, hybrid aspen and white poplar male tree and molecular analysis of variants in micropropagated plants. Life Sci. J. 8, 177

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Pásztor, K., Győri, Z. (1991): Changes in the amino acid composition of maize hybrids with high lysine contents. DATE Tudományos Közleményei , 30 , 117–133. Győri Z. Changes

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, New Delhi, 3 , 1340-1342. Subramanian, M., Sivasubramanian, V. 1986: Comparison of rice hybrids and local varieties of INRRI. International Rice Research Newsletter , 1 , 21

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65 385 410 Zhang, X.M., Shi, C.H., Yue, S.H., Wu, J.G., & Bao, G.L. (2004) Genetic analysis of methionine content in indica-japonica hybrid

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Scientometrics
Authors: Frizo Janssens, Wolfgang Glänzel, and Bart De Moor

Abstract  

Previous studies have shown that hybrid clustering methods that incorporate textual content and bibliometric information can outperform clustering methods that use only one of these components. In this paper we apply a hybrid clustering method based on Fisher’s inverse chisquare to integrate full-text with citations and to provide a mapping of the field of information science. We quantitatively and qualitatively asses the added value of such an integrated analysis and we investigate whether the clustering outcome is a better representation of the field by comparing with a text-only clustering and with another hybrid method based on linear combination of distance matrices. Our data set consists of almost 1000 articles and notes published in the period 2002–2004 in 5 representative journals. The optimal number of clusters for the field is 5, determined by using a combination of distance-based and stability-based methods. Term networks present the cognitive structure of the field and are complemented by the most representative publications. Three large traditional sub-disciplines, particularly, information retrieval, bibliometrics/scientometrics, and more social aspects, and two smaller clusters about patent analysis and webometrics, can be distinguished.

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