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SIR 97 is the integration of two programs, SIR 92 and CAOS , the first devoted to the solution of crystal structures by direct methods, the second to refinement via least-squares–Fourier procedures. Several new feature...

A new reproducibility index is developed and studied. This index is the correlation between the two readings that fall on the 45 degree line through the origin. It is simple to use and possesses desirable properties. The...

Abstract The authors propose a new climatic drought index: the standardized precipitation evapotranspiration index (SPEI). The SPEI is based on precipitation and temperature data, and it has the advantage of combining mu...

Materias / palabras clave: Comorbidity; Medicine; Index (typography); Medical record; Disease; Health care; MEDLINE; Emergency medicine; Internal medicine; Economics; Law; Computer science

An index of factorial simplicity, employing the quartimax transformational criteria of Carroll, Wrigley and Neuhaus, and Saunders, is developed. This index is both for each row separately and for a factor pattern matrix ...

Materias / palabras clave: Index (typography); Pollution; Work (physics); Environmental science; sort; Ecology; Water pollution; Aquatic ecosystem; Environmental resource management; Water resource management; Computer science; Engineering

I propose the index h, defined as the number of papers with citation number > or =h, as a useful index to characterize the scientific output of a researcher.

Normed and nonnormed fit indexes are frequently used as adjuncts to chi-square statistics for evaluating the fit of a structural model. A drawback of existing indexes is that they estimate no known population parameters....

This article examines the adequacy of the “rules of thumb” conventional cutoff criteria and several new alternatives for various fit indexes used to evaluate model fit in practice. Using a 2‐index presentation stra...

Abstract Measurement invariance is usually tested using Multigroup Confirmatory Factor Analysis, which examines the change in the goodness-of-fit index (GFI) when cross-group constraints are imposed on a measurement mode...

Materias / palabras clave: Computer science; Flexibility (engineering); Dynamic programming; Software; Throughput; Index (typography); Sensitivity (control systems); Parallel computing; Algorithm; Computer hardware; Programming language; Operating...

Materias / palabras clave: Search engine indexing; Computer science; Genome; Index (typography); Computational biology; Reference genome; Alignment-free sequence analysis; Sequence alignment; Data mining; Biology; Genetics; Artificial intelligence

Materias / palabras clave: Youden's J statistic; Index (typography); Citation; Library science; Information retrieval; Medicine; Statistics; Computer science; Mathematics; World Wide Web; Receiver operating characteristic

Materias / palabras clave: Statistics; Diversity (politics); Mathematics; Population; Index (typography); Logarithm; Sample (material); Diversity index; Distribution (mathematics); Constant (computer programming); Degree (music); Demography

Abstract We develop a new index of economic policy uncertainty (EPU) based on newspaper coverage frequency. Several types of evidence—including human readings of 12,000 newspaper articles—indicate that our index prox...

Starts with a brief review of the history and the application areas considered in the literature. The author then proceeds with introductory modeling examples, behavioral and structural properties, three methods of analy...

Probability Theory. Statistical Inference. Some Tests Based on the Binomial Distribution. Contingency Tables. Some Methods Based on Ranks. Statistics of the Kolmogorov-Smirnov Type. References. Appendix Tables. Answers t...

Materias / palabras clave: Glossary; Computer science; Management science; Process (computing); Reliability (semiconductor); Data collection; Data science; Index (typography); Sampling (signal processing); Operations research; Engineering; Statist...

The Index of ADL was developed to study results of treatment and prognosis in the elderly and chronically ill. Grades of the Index summarize over-all performance in bathing, dressing, going to toilet, transferring, conti...

The results of a single-crystal structure determination when in CIF format can now be validated routinely by automatic procedures. In this way, many errors in published papers can be avoided. The validation software gene...

Social network sites (SNSs) are increasingly attracting the attention of academic and industry researchers intrigued by their affordances and reach. This special theme section of the Journal of Computer-Mediated Communic...

The following paper presents current thinking and research on fit indices for structural equation modelling. The paper presents a selection of fit indices that are widely regarded as the most informative indices availabl...

Materias / palabras clave: Aeroelasticity; Wind tunnel; Aerodynamics; Structural engineering; Deck; Nonlinear system; Vibration; Section (typography); Aerodynamic force; Bridge (graph theory); Flutter; Experimental data

Prologue Part I: Evolutionary explanation Demography: age and stage structure Quantitative genetics and reaction norms Trade-offs Lineage-specific effects Part II: Age and size at maturity Number and size of offspring Re...