243,558 research outputs found
Du lin sauvage au lin cultivé
No full textNational audienceLe lin actuellement cultivé correspond à l'espèce domestique (Linum usitatissimum L.) qui dérive de l'exploitation de l'ancêtre sauvage, le lin bisannuel ou lin à feuilles étroites (Linum bienne Mill.). L'adaptabilité du lin sauvage à différentes conditions environnementales permet d'expliquer sa large répartition géographique, du Caucase au Nord de l'Afrique et de la Méditerranée à l'Europe occidental
Spatial Chow-Lin Methods for Data Completion in Econometric Flow Models
Full text linkFlow data across regions can be modeled by spatial econometric models, see LeSage and Pace (2009). Recently, regional studies became interested in the aggregation and disaggregation of flow models, because trade data cannot be obtained at a disaggregated level but data are published on an aggregate level. Furthermore, missing data in disaggregated flow models occur quite often since detailed measurements are often not possible at all observation points in time and space. In this paper we develop classical and Bayesian methods to complete flow data. The Chow and Lin (1971) method was developed for completing disaggregated incomplete time series data. We will extend this method in a general framework to spatially correlated flow data using the cross-sectional Chow-Lin method of Polasek et al. (2009). The missing disaggregated data can be obtained either by feasible GLS prediction or by a Bayesian (posterior) predictive density.Missing values in spatial econometrics, MCMC, non-spatial Chow-Lin (CL) and spatial Chow-Lin (SCL) methods, spatial internal flow (SIF) models, origin and destination (OD) data
Singaporemma wulongensis Lin & Li 2014
No full textSingaporemma wulongensis Lin & Li, 2014 Figures 6E–e, 7F Singaporemma wulongensis Lin & Li, 2014: 46, figs 7–9, 17, 20B Examined material. Holotype ♂, paratypes 8♂ and 20♀ (NHMSU), CHINA: Chongqing, Wulong, Tudi Town, Tiansheng Village, Xiaodong Cave, 29°31.853'N, 107°50.817'E, altitude 1050 m, 17 October 2010, L. Dou and Y. Lin leg. Diagnosis. Male of S. wulongensis differs from males of all other congeners with the exception of S. bifurcata by the furcate embolus (Fig. 6E–e vs. Fig. 6A–D, 6a–d, 6G–H, 6g –h); it differs from male of S. bifurcata by the narrower, longer oval bulb, the embolus with two equilong tip branches, and the embolus starts from the submesialback surface of bulb, but the embolus of S. bifurcata with asymmetric branches that origins from prolateral surface of bulb (Fig. 6E–e vs. Fig. 6F–f). Female of S. wulongensis seems also close to S. bifurcata having a similar vulval structure, but it can be distinguished by the lager “ω”-shaped inner vulval plate, and the longer, weakly sclerotized central process (Fig. 7F vs. Fig. 7D). Description. See Lin & Li, 2014: 46. Distribution. China (Chongqing) (Fig. 10).Published as part of Yan, Fanhu & Lin, Yucheng, 2018, A review of the spider genus Singaporemma (Araneae: Tetrablemmidae), with the description of a new species, pp. 329-346 in Zootaxa 4392 (2) on pages 344-345, DOI: 10.11646/zootaxa.4392.2.6, http://zenodo.org/record/119544
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
SPATIAL CHOW-LIN METHODS: BAYESIAN AND ML FORECAST COMPARISONS
Full text linkCompleting data that are collected in disaggregated and heterogeneous spatial units is a quite frequent problem in spatial analyses of regional data. Chow and Lin (1971) (CL) were the rst to develop a uni ed framework for the three problems (interpolation, extrapolation and distribution) of predicting disaggregated times series by so-called indicator series. This paper develops a spatial CL procedure for disaggregating cross-sectional spatial data and compares the Maximum Likelihood and Bayesian spatial CL forecasts with the naive pro rata error distribution. We outline the error covariance structure in a spatial context, derive the BLUE for the ML estimator and the Bayesian estimation procedure by MCMC. Finally we
apply the procedure to European regional GDP data and discuss the disaggregation assumptions. For the evaluation of the spatial Chow-Lin procedure we assume that only NUTS 1 GDP is known and predict it at NUTS 2 by using employment and spatial information available at NUTS 2. The spatial neighborhood is de ned by the inverse travel time by car in minutes. Finally, we present the forecast accuracy criteria comparing the predicted values with the actual observations.
Book Reviews of Lin, Y.-L.: Mesoscale Dynamics
No full textBuchbesprechung Lin, Y.-L., 2007: Mesoscale Dynamic
Lysmata bahia Rhyne & Lin 2006
No full textLysmata bahia Rhyne & Lin, 2006 (Figure 7F) Material examined. Penaeid—1 OF; CL: 9.4 mm; CZUFS CRU- 00317. Stations. Penaeid—4. Distribution. Western Atlantic—Panama (Bocas Del Toro), and Brazil (Ceará, Sergipe, Bahia, Rio de Janeiro, and São Paulo) (Rhyne & Lin 2006; Baeza 2008; Barros-Alves et al. 2015; Pachelle et al. 2016). Ecological notes. Found at 5 m depth, on non-consolidated bottoms, on reefs, and inside calcareous algae (Almeida et al. 2012). Remarks. Part of a monophyletic group composed of Lysmata gacilirostris Wicksten, L. pederseni Rhyne & Lin, L. ankeri Rhyne & Lin, L. nayaritensis Wiksten, L. californica (Stimpson), and L. bahia supported by phylogenetic analysis (Baeza 2010). Previous records in Sergipe. Barros-Alves et al. (2015).Published as part of Mendonça, Luana M. C., Guimarães, Carmen R. P., Santos, Rafael C., Alves, Douglas F. R., Barros-Alves, Samara P., Silva, Sonja L. R. & Hirose, Gustavo L., 2019, Decapod crustaceans from the continental shelf of Sergipe, northeastern Brazil, pp. 301-344 in Zootaxa 4712 (3) on page 330, DOI: 10.11646/zootaxa.4712.3.1, http://zenodo.org/record/358631
Études sur la sélection du Lin.
No full textBlaringhem L. Études sur la sélection du Lin.. In: Revue de botanique appliquée et d'agriculture coloniale, 4ᵉ année, bulletin n°39, novembre 1924. pp. 737-745
Etudes sur la Sélection du Lin.
No full textBlaringhem L. Etudes sur la Sélection du Lin. In: Revue de botanique appliquée et d'agriculture coloniale, 3ᵉ année, bulletin n°17, 31 janvier 1923. pp. 3-25
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