a r t i c l e i n f o The existing literature on the relationship between property rights in land and agricultural investment in Africa has given results that are often confusing and contradictory. I make two clarifying contributions to this literature. First, I pull together existing studies and investigate whether the results they find have been affected by research methods or local contexts....

The worm plot visualizes differences between two distributions, conditional on the values of a covariate. Though the worm plot is a general diagnostic tool for the analysis of residuals, this paper focuses on an application in constructing growth reference curves, where the covariate of interest is age. The LMS model of Cole and Green is used to construct reference curves in the Fourth Dutch Gr...

Consequently, unreplicated experiments are commonplace in early generation trials (Kempton and Gleeson, Early generation selection experiments typically involve several 1997; Martin, 2002). Because of the number of genohundred to thousands of lines. Various systematic and statistical techniques have been developed to increase effectiveness and efficiencies types included and large land area req...

We study the convergence of the population dynamics algorithm, which produces sample pools of random variables having a distribution that closely approximates that of the special endogenous solution to a stochastic fixed-point equation of the form: R D = Φ(Q,N, {Ci}, {Ri}), where (Q,N, {Ci}) is a real-valued random vector with N ∈ N, and {Ri}i∈N is a sequence of i.i.d. copies of R, independent ...

Building on the successful application in the laboratory of PLOT-cryoadsorption as a means of collecting vapor (or headspace) samples for chromatographic analysis, in this paper a field portable apparatus is introduced. This device fits inside of a briefcase (aluminum tool carrier), and can be easily transported by vehicle or by air. The portable apparatus functions entirely on compressed air, ...

Visuospatial processing is a commonly assessed neurocognitive domain with deficits linked to dysfunction in right posterior regions of the brain. With the growth of large-scale clinical research studies, there is an increased need for efficient and scalable assessments of neurocognition, including visuospatial processing. The purpose of the current study was to use a novel method that combines ...

One of the classic concerns in statistics is determining if two samples come from thesame population, i.e. homogeneity testing. In this paper, we propose a homogeneitytest context Functional Data Analysis, adopting an idea multivariatedata analysis: data depth plot (DD-plot). This DD-plot generalization theunivariate Q-Q (quantile-quantile plot). We some based onthese DD-plots, and use bootstra...

BACKGROUND The evidence for association between Epstein-Barr virus (EBV) infection and risk of oral squamous cell carcinoma (OSCC) is inconsistent in the literature. Therefore, this meta-analysis was conducted to clarify this association. METHODS A literature search was conducted in electronic databases for English- and Chinese-language publications until March 31, 2017 to include eligible ca...